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authorLinus Torvalds <torvalds@linux-foundation.org>2012-07-30 22:16:57 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-30 22:16:57 -0400
commit1fad1e9a747687a7399bf58e87974f9b1bbcae06 (patch)
treefde2dc9a35321e21c99e06d4b79d5fa06fd34679
parentbbeb0af25f493261c15ceee176c99b7fd6fd5479 (diff)
parentf44106e2173f08ccb1c9195d85a6c22388b461c1 (diff)
Merge tag 'nfs-for-3.6-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust: "Features include: - More preparatory patches for modularising NFSv2/v3/v4. Split out the various NFSv2/v3/v4-specific code into separate files - More preparation for the NFSv4 migration code - Ensure that OPEN(O_CREATE) observes the pNFS mds threshold parameters - pNFS fast failover when the data servers are down - Various cleanups and debugging patches" * tag 'nfs-for-3.6-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (67 commits) nfs: fix fl_type tests in NFSv4 code NFS: fix pnfs regression with directio writes NFS: fix pnfs regression with directio reads sunrpc: clnt: Add missing braces nfs: fix stub return type warnings NFS: exit_nfs_v4() shouldn't be an __exit function SUNRPC: Add a missing spin_unlock to gss_mech_list_pseudoflavors NFS: Split out NFS v4 client functions NFS: Split out the NFS v4 filesystem types NFS: Create a single nfs_clone_super() function NFS: Split out NFS v4 server creating code NFS: Initialize the NFS v4 client from init_nfs_v4() NFS: Move the v4 getroot code to nfs4getroot.c NFS: Split out NFS v4 file operations NFS: Initialize v4 sysctls from nfs_init_v4() NFS: Create an init_nfs_v4() function NFS: Split out NFS v4 inode operations NFS: Split out NFS v3 inode operations NFS: Split out NFS v2 inode operations NFS: Clean up nfs4_proc_setclientid() and friends ...
Diffstat
-rw-r--r--fs/nfs/Kconfig9
-rw-r--r--fs/nfs/Makefile11
-rw-r--r--fs/nfs/client.c685
-rw-r--r--fs/nfs/delegation.c7
-rw-r--r--fs/nfs/delegation.h19
-rw-r--r--fs/nfs/dir.c107
-rw-r--r--fs/nfs/direct.c6
-rw-r--r--fs/nfs/file.c179
-rw-r--r--fs/nfs/getroot.c50
-rw-r--r--fs/nfs/inode.c71
-rw-r--r--fs/nfs/internal.h87
-rw-r--r--fs/nfs/nfs2xdr.c28
-rw-r--r--fs/nfs/nfs3proc.c46
-rw-r--r--fs/nfs/nfs3xdr.c43
-rw-r--r--fs/nfs/nfs4_fs.h33
-rw-r--r--fs/nfs/nfs4client.c663
-rw-r--r--fs/nfs/nfs4file.c126
-rw-r--r--fs/nfs/nfs4filelayout.c10
-rw-r--r--fs/nfs/nfs4filelayoutdev.c2
-rw-r--r--fs/nfs/nfs4getroot.c49
-rw-r--r--fs/nfs/nfs4proc.c303
-rw-r--r--fs/nfs/nfs4state.c114
-rw-r--r--fs/nfs/nfs4super.c360
-rw-r--r--fs/nfs/nfs4sysctl.c68
-rw-r--r--fs/nfs/nfs4xdr.c84
-rw-r--r--fs/nfs/pnfs.c55
-rw-r--r--fs/nfs/pnfs.h31
-rw-r--r--fs/nfs/proc.c38
-rw-r--r--fs/nfs/read.c16
-rw-r--r--fs/nfs/super.c438
-rw-r--r--fs/nfs/sysctl.c26
-rw-r--r--fs/nfs/unlink.c2
-rw-r--r--fs/nfs/write.c34
-rw-r--r--include/linux/nfs_fs.h8
-rw-r--r--include/linux/nfs_fs_sb.h3
-rw-r--r--include/linux/nfs_page.h2
-rw-r--r--include/linux/nfs_xdr.h16
-rw-r--r--include/linux/sunrpc/auth.h2
-rw-r--r--include/linux/sunrpc/gss_api.h3
-rw-r--r--include/linux/sunrpc/xdr.h6
-rw-r--r--net/sunrpc/auth.c54
-rw-r--r--net/sunrpc/auth_gss/auth_gss.c1
-rw-r--r--net/sunrpc/auth_gss/gss_mech_switch.c20
-rw-r--r--net/sunrpc/clnt.c3
-rw-r--r--net/sunrpc/xdr.c127
45 files changed, 2220 insertions, 1825 deletions
diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
index f90f4f5cd421..404c6a8ac394 100644
--- a/fs/nfs/Kconfig
+++ b/fs/nfs/Kconfig
@@ -88,9 +88,8 @@ config NFS_V4
88 88
89config NFS_V4_1 89config NFS_V4_1
90 bool "NFS client support for NFSv4.1 (EXPERIMENTAL)" 90 bool "NFS client support for NFSv4.1 (EXPERIMENTAL)"
91 depends on NFS_FS && NFS_V4 && EXPERIMENTAL 91 depends on NFS_V4 && EXPERIMENTAL
92 select SUNRPC_BACKCHANNEL 92 select SUNRPC_BACKCHANNEL
93 select PNFS_FILE_LAYOUT
94 help 93 help
95 This option enables support for minor version 1 of the NFSv4 protocol 94 This option enables support for minor version 1 of the NFSv4 protocol
96 (RFC 5661) in the kernel's NFS client. 95 (RFC 5661) in the kernel's NFS client.
@@ -99,15 +98,17 @@ config NFS_V4_1
99 98
100config PNFS_FILE_LAYOUT 99config PNFS_FILE_LAYOUT
101 tristate 100 tristate
101 depends on NFS_V4_1
102 default m
102 103
103config PNFS_BLOCK 104config PNFS_BLOCK
104 tristate 105 tristate
105 depends on NFS_FS && NFS_V4_1 && BLK_DEV_DM 106 depends on NFS_V4_1 && BLK_DEV_DM
106 default m 107 default m
107 108
108config PNFS_OBJLAYOUT 109config PNFS_OBJLAYOUT
109 tristate 110 tristate
110 depends on NFS_FS && NFS_V4_1 && SCSI_OSD_ULD 111 depends on NFS_V4_1 && SCSI_OSD_ULD
111 default m 112 default m
112 113
113config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN 114config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN
diff --git a/fs/nfs/Makefile b/fs/nfs/Makefile
index 7ddd45d9f170..0b96c2038346 100644
--- a/fs/nfs/Makefile
+++ b/fs/nfs/Makefile
@@ -13,11 +13,16 @@ nfs-$(CONFIG_NFS_V2) += proc.o nfs2xdr.o
13nfs-$(CONFIG_NFS_V3) += nfs3proc.o nfs3xdr.o 13nfs-$(CONFIG_NFS_V3) += nfs3proc.o nfs3xdr.o
14nfs-$(CONFIG_NFS_V3_ACL) += nfs3acl.o 14nfs-$(CONFIG_NFS_V3_ACL) += nfs3acl.o
15nfs-$(CONFIG_NFS_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o \ 15nfs-$(CONFIG_NFS_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o \
16 delegation.o idmap.o \ 16 nfs4super.o nfs4file.o delegation.o idmap.o \
17 callback.o callback_xdr.o callback_proc.o \ 17 callback.o callback_xdr.o callback_proc.o \
18 nfs4namespace.o 18 nfs4namespace.o nfs4getroot.o nfs4client.o
19nfs-$(CONFIG_NFS_V4_1) += pnfs.o pnfs_dev.o 19nfs-$(CONFIG_NFS_V4_1) += pnfs.o pnfs_dev.o
20nfs-$(CONFIG_SYSCTL) += sysctl.o 20
21ifeq ($(CONFIG_SYSCTL), y)
22nfs-y += sysctl.o
23nfs-$(CONFIG_NFS_V4) += nfs4sysctl.o
24endif
25
21nfs-$(CONFIG_NFS_FSCACHE) += fscache.o fscache-index.o 26nfs-$(CONFIG_NFS_FSCACHE) += fscache.o fscache-index.o
22 27
23obj-$(CONFIG_PNFS_FILE_LAYOUT) += nfs_layout_nfsv41_files.o 28obj-$(CONFIG_PNFS_FILE_LAYOUT) += nfs_layout_nfsv41_files.o
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index f005b5bebdc7..65afa382c5e3 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -56,35 +56,6 @@
56#define NFSDBG_FACILITY NFSDBG_CLIENT 56#define NFSDBG_FACILITY NFSDBG_CLIENT
57 57
58static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq); 58static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq);
59#ifdef CONFIG_NFS_V4
60
61/*
62 * Get a unique NFSv4.0 callback identifier which will be used
63 * by the V4.0 callback service to lookup the nfs_client struct
64 */
65static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion)
66{
67 int ret = 0;
68 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
69
70 if (clp->rpc_ops->version != 4 || minorversion != 0)
71 return ret;
72retry:
73 if (!idr_pre_get(&nn->cb_ident_idr, GFP_KERNEL))
74 return -ENOMEM;
75 spin_lock(&nn->nfs_client_lock);
76 ret = idr_get_new(&nn->cb_ident_idr, clp, &clp->cl_cb_ident);
77 spin_unlock(&nn->nfs_client_lock);
78 if (ret == -EAGAIN)
79 goto retry;
80 return ret;
81}
82#endif /* CONFIG_NFS_V4 */
83
84/*
85 * Turn off NFSv4 uid/gid mapping when using AUTH_SYS
86 */
87static bool nfs4_disable_idmapping = true;
88 59
89/* 60/*
90 * RPC cruft for NFS 61 * RPC cruft for NFS
@@ -130,24 +101,13 @@ const struct rpc_program nfsacl_program = {
130}; 101};
131#endif /* CONFIG_NFS_V3_ACL */ 102#endif /* CONFIG_NFS_V3_ACL */
132 103
133struct nfs_client_initdata {
134 unsigned long init_flags;
135 const char *hostname;
136 const struct sockaddr *addr;
137 size_t addrlen;
138 const struct nfs_rpc_ops *rpc_ops;
139 int proto;
140 u32 minorversion;
141 struct net *net;
142};
143
144/* 104/*
145 * Allocate a shared client record 105 * Allocate a shared client record
146 * 106 *
147 * Since these are allocated/deallocated very rarely, we don't 107 * Since these are allocated/deallocated very rarely, we don't
148 * bother putting them in a slab cache... 108 * bother putting them in a slab cache...
149 */ 109 */
150static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init) 110struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
151{ 111{
152 struct nfs_client *clp; 112 struct nfs_client *clp;
153 struct rpc_cred *cred; 113 struct rpc_cred *cred;
@@ -177,18 +137,6 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_
177 clp->cl_proto = cl_init->proto; 137 clp->cl_proto = cl_init->proto;
178 clp->cl_net = get_net(cl_init->net); 138 clp->cl_net = get_net(cl_init->net);
179 139
180#ifdef CONFIG_NFS_V4
181 err = nfs_get_cb_ident_idr(clp, cl_init->minorversion);
182 if (err)
183 goto error_cleanup;
184
185 spin_lock_init(&clp->cl_lock);
186 INIT_DELAYED_WORK(&clp->cl_renewd, nfs4_renew_state);
187 rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS client");
188 clp->cl_state = 1 << NFS4CLNT_LEASE_EXPIRED;
189 clp->cl_minorversion = cl_init->minorversion;
190 clp->cl_mvops = nfs_v4_minor_ops[cl_init->minorversion];
191#endif
192 cred = rpc_lookup_machine_cred("*"); 140 cred = rpc_lookup_machine_cred("*");
193 if (!IS_ERR(cred)) 141 if (!IS_ERR(cred))
194 clp->cl_machine_cred = cred; 142 clp->cl_machine_cred = cred;
@@ -203,45 +151,6 @@ error_0:
203} 151}
204 152
205#ifdef CONFIG_NFS_V4 153#ifdef CONFIG_NFS_V4
206#ifdef CONFIG_NFS_V4_1
207static void nfs4_shutdown_session(struct nfs_client *clp)
208{
209 if (nfs4_has_session(clp)) {
210 nfs4_destroy_session(clp->cl_session);
211 nfs4_destroy_clientid(clp);
212 }
213
214}
215#else /* CONFIG_NFS_V4_1 */
216static void nfs4_shutdown_session(struct nfs_client *clp)
217{
218}
219#endif /* CONFIG_NFS_V4_1 */
220
221/*
222 * Destroy the NFS4 callback service
223 */
224static void nfs4_destroy_callback(struct nfs_client *clp)
225{
226 if (__test_and_clear_bit(NFS_CS_CALLBACK, &clp->cl_res_state))
227 nfs_callback_down(clp->cl_mvops->minor_version);
228}
229
230static void nfs4_shutdown_client(struct nfs_client *clp)
231{
232 if (__test_and_clear_bit(NFS_CS_RENEWD, &clp->cl_res_state))
233 nfs4_kill_renewd(clp);
234 nfs4_shutdown_session(clp);
235 nfs4_destroy_callback(clp);
236 if (__test_and_clear_bit(NFS_CS_IDMAP, &clp->cl_res_state))
237 nfs_idmap_delete(clp);
238
239 rpc_destroy_wait_queue(&clp->cl_rpcwaitq);
240 kfree(clp->cl_serverowner);
241 kfree(clp->cl_serverscope);
242 kfree(clp->cl_implid);
243}
244
245/* idr_remove_all is not needed as all id's are removed by nfs_put_client */ 154/* idr_remove_all is not needed as all id's are removed by nfs_put_client */
246void nfs_cleanup_cb_ident_idr(struct net *net) 155void nfs_cleanup_cb_ident_idr(struct net *net)
247{ 156{
@@ -264,16 +173,7 @@ static void pnfs_init_server(struct nfs_server *server)
264 rpc_init_wait_queue(&server->roc_rpcwaitq, "pNFS ROC"); 173 rpc_init_wait_queue(&server->roc_rpcwaitq, "pNFS ROC");
265} 174}
266 175
267static void nfs4_destroy_server(struct nfs_server *server)
268{
269 nfs4_purge_state_owners(server);
270}
271
272#else 176#else
273static void nfs4_shutdown_client(struct nfs_client *clp)
274{
275}
276
277void nfs_cleanup_cb_ident_idr(struct net *net) 177void nfs_cleanup_cb_ident_idr(struct net *net)
278{ 178{
279} 179}
@@ -291,12 +191,10 @@ static void pnfs_init_server(struct nfs_server *server)
291/* 191/*
292 * Destroy a shared client record 192 * Destroy a shared client record
293 */ 193 */
294static void nfs_free_client(struct nfs_client *clp) 194void nfs_free_client(struct nfs_client *clp)
295{ 195{
296 dprintk("--> nfs_free_client(%u)\n", clp->rpc_ops->version); 196 dprintk("--> nfs_free_client(%u)\n", clp->rpc_ops->version);
297 197
298 nfs4_shutdown_client(clp);
299
300 nfs_fscache_release_client_cookie(clp); 198 nfs_fscache_release_client_cookie(clp);
301 199
302 /* -EIO all pending I/O */ 200 /* -EIO all pending I/O */
@@ -333,7 +231,7 @@ void nfs_put_client(struct nfs_client *clp)
333 231
334 BUG_ON(!list_empty(&clp->cl_superblocks)); 232 BUG_ON(!list_empty(&clp->cl_superblocks));
335 233
336 nfs_free_client(clp); 234 clp->rpc_ops->free_client(clp);
337 } 235 }
338} 236}
339EXPORT_SYMBOL_GPL(nfs_put_client); 237EXPORT_SYMBOL_GPL(nfs_put_client);
@@ -412,8 +310,8 @@ static int nfs_sockaddr_cmp_ip4(const struct sockaddr *sa1,
412 * Test if two socket addresses represent the same actual socket, 310 * Test if two socket addresses represent the same actual socket,
413 * by comparing (only) relevant fields, excluding the port number. 311 * by comparing (only) relevant fields, excluding the port number.
414 */ 312 */
415static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1, 313int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1,
416 const struct sockaddr *sa2) 314 const struct sockaddr *sa2)
417{ 315{
418 if (sa1->sa_family != sa2->sa_family) 316 if (sa1->sa_family != sa2->sa_family)
419 return 0; 317 return 0;
@@ -447,33 +345,6 @@ static int nfs_sockaddr_cmp(const struct sockaddr *sa1,
447 return 0; 345 return 0;
448} 346}
449 347
450#if defined(CONFIG_NFS_V4_1)
451/* Common match routine for v4.0 and v4.1 callback services */
452static bool nfs4_cb_match_client(const struct sockaddr *addr,
453 struct nfs_client *clp, u32 minorversion)
454{
455 struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr;
456
457 /* Don't match clients that failed to initialise */
458 if (!(clp->cl_cons_state == NFS_CS_READY ||
459 clp->cl_cons_state == NFS_CS_SESSION_INITING))
460 return false;
461
462 smp_rmb();
463
464 /* Match the version and minorversion */
465 if (clp->rpc_ops->version != 4 ||
466 clp->cl_minorversion != minorversion)
467 return false;
468
469 /* Match only the IP address, not the port number */
470 if (!nfs_sockaddr_match_ipaddr(addr, clap))
471 return false;
472
473 return true;
474}
475#endif /* CONFIG_NFS_V4_1 */
476
477/* 348/*
478 * Find an nfs_client on the list that matches the initialisation data 349 * Find an nfs_client on the list that matches the initialisation data
479 * that is supplied. 350 * that is supplied.
@@ -552,7 +423,7 @@ nfs_found_client(const struct nfs_client_initdata *cl_init,
552 * Look up a client by IP address and protocol version 423 * Look up a client by IP address and protocol version
553 * - creates a new record if one doesn't yet exist 424 * - creates a new record if one doesn't yet exist
554 */ 425 */
555static struct nfs_client * 426struct nfs_client *
556nfs_get_client(const struct nfs_client_initdata *cl_init, 427nfs_get_client(const struct nfs_client_initdata *cl_init,
557 const struct rpc_timeout *timeparms, 428 const struct rpc_timeout *timeparms,
558 const char *ip_addr, 429 const char *ip_addr,
@@ -572,7 +443,7 @@ nfs_get_client(const struct nfs_client_initdata *cl_init,
572 if (clp) { 443 if (clp) {
573 spin_unlock(&nn->nfs_client_lock); 444 spin_unlock(&nn->nfs_client_lock);
574 if (new) 445 if (new)
575 nfs_free_client(new); 446 new->rpc_ops->free_client(new);
576 return nfs_found_client(cl_init, clp); 447 return nfs_found_client(cl_init, clp);
577 } 448 }
578 if (new) { 449 if (new) {
@@ -586,7 +457,7 @@ nfs_get_client(const struct nfs_client_initdata *cl_init,
586 457
587 spin_unlock(&nn->nfs_client_lock); 458 spin_unlock(&nn->nfs_client_lock);
588 459
589 new = nfs_alloc_client(cl_init); 460 new = cl_init->rpc_ops->alloc_client(cl_init);
590 } while (!IS_ERR(new)); 461 } while (!IS_ERR(new));
591 462
592 dprintk("<-- nfs_get_client() Failed to find %s (%ld)\n", 463 dprintk("<-- nfs_get_client() Failed to find %s (%ld)\n",
@@ -607,7 +478,7 @@ void nfs_mark_client_ready(struct nfs_client *clp, int state)
607/* 478/*
608 * Initialise the timeout values for a connection 479 * Initialise the timeout values for a connection
609 */ 480 */
610static void nfs_init_timeout_values(struct rpc_timeout *to, int proto, 481void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
611 unsigned int timeo, unsigned int retrans) 482 unsigned int timeo, unsigned int retrans)
612{ 483{
613 to->to_initval = timeo * HZ / 10; 484 to->to_initval = timeo * HZ / 10;
@@ -648,9 +519,9 @@ static void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
648/* 519/*
649 * Create an RPC client handle 520 * Create an RPC client handle
650 */ 521 */
651static int nfs_create_rpc_client(struct nfs_client *clp, 522int nfs_create_rpc_client(struct nfs_client *clp,
652 const struct rpc_timeout *timeparms, 523 const struct rpc_timeout *timeparms,
653 rpc_authflavor_t flavor) 524 rpc_authflavor_t flavor)
654{ 525{
655 struct rpc_clnt *clnt = NULL; 526 struct rpc_clnt *clnt = NULL;
656 struct rpc_create_args args = { 527 struct rpc_create_args args = {
@@ -767,7 +638,7 @@ static inline void nfs_init_server_aclclient(struct nfs_server *server)
767/* 638/*
768 * Create a general RPC client 639 * Create a general RPC client
769 */ 640 */
770static int nfs_init_server_rpcclient(struct nfs_server *server, 641int nfs_init_server_rpcclient(struct nfs_server *server,
771 const struct rpc_timeout *timeo, 642 const struct rpc_timeout *timeo,
772 rpc_authflavor_t pseudoflavour) 643 rpc_authflavor_t pseudoflavour)
773{ 644{
@@ -975,7 +846,6 @@ static void nfs_server_set_fsinfo(struct nfs_server *server,
975 server->wsize = NFS_MAX_FILE_IO_SIZE; 846 server->wsize = NFS_MAX_FILE_IO_SIZE;
976 server->wpages = (server->wsize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; 847 server->wpages = (server->wsize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
977 server->pnfs_blksize = fsinfo->blksize; 848 server->pnfs_blksize = fsinfo->blksize;
978 set_pnfs_layoutdriver(server, mntfh, fsinfo->layouttype);
979 849
980 server->wtmult = nfs_block_bits(fsinfo->wtmult, NULL); 850 server->wtmult = nfs_block_bits(fsinfo->wtmult, NULL);
981 851
@@ -1001,7 +871,7 @@ static void nfs_server_set_fsinfo(struct nfs_server *server,
1001/* 871/*
1002 * Probe filesystem information, including the FSID on v2/v3 872 * Probe filesystem information, including the FSID on v2/v3
1003 */ 873 */
1004static int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, struct nfs_fattr *fattr) 874int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, struct nfs_fattr *fattr)
1005{ 875{
1006 struct nfs_fsinfo fsinfo; 876 struct nfs_fsinfo fsinfo;
1007 struct nfs_client *clp = server->nfs_client; 877 struct nfs_client *clp = server->nfs_client;
@@ -1045,7 +915,7 @@ out_error:
1045/* 915/*
1046 * Copy useful information when duplicating a server record 916 * Copy useful information when duplicating a server record
1047 */ 917 */
1048static void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_server *source) 918void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_server *source)
1049{ 919{
1050 target->flags = source->flags; 920 target->flags = source->flags;
1051 target->rsize = source->rsize; 921 target->rsize = source->rsize;
@@ -1058,7 +928,7 @@ static void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_serve
1058 target->options = source->options; 928 target->options = source->options;
1059} 929}
1060 930
1061static void nfs_server_insert_lists(struct nfs_server *server) 931void nfs_server_insert_lists(struct nfs_server *server)
1062{ 932{
1063 struct nfs_client *clp = server->nfs_client; 933 struct nfs_client *clp = server->nfs_client;
1064 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); 934 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
@@ -1092,7 +962,7 @@ static void nfs_server_remove_lists(struct nfs_server *server)
1092/* 962/*
1093 * Allocate and initialise a server record 963 * Allocate and initialise a server record
1094 */ 964 */
1095static struct nfs_server *nfs_alloc_server(void) 965struct nfs_server *nfs_alloc_server(void)
1096{ 966{
1097 struct nfs_server *server; 967 struct nfs_server *server;
1098 968
@@ -1138,7 +1008,6 @@ void nfs_free_server(struct nfs_server *server)
1138 dprintk("--> nfs_free_server()\n"); 1008 dprintk("--> nfs_free_server()\n");
1139 1009
1140 nfs_server_remove_lists(server); 1010 nfs_server_remove_lists(server);
1141 unset_pnfs_layoutdriver(server);
1142 1011
1143 if (server->destroy != NULL) 1012 if (server->destroy != NULL)
1144 server->destroy(server); 1013 server->destroy(server);
@@ -1226,522 +1095,6 @@ error:
1226 return ERR_PTR(error); 1095 return ERR_PTR(error);
1227} 1096}
1228 1097
1229#ifdef CONFIG_NFS_V4
1230/*
1231 * NFSv4.0 callback thread helper
1232 *
1233 * Find a client by callback identifier
1234 */
1235struct nfs_client *
1236nfs4_find_client_ident(struct net *net, int cb_ident)
1237{
1238 struct nfs_client *clp;
1239 struct nfs_net *nn = net_generic(net, nfs_net_id);
1240
1241 spin_lock(&nn->nfs_client_lock);
1242 clp = idr_find(&nn->cb_ident_idr, cb_ident);
1243 if (clp)
1244 atomic_inc(&clp->cl_count);
1245 spin_unlock(&nn->nfs_client_lock);
1246 return clp;
1247}
1248
1249#if defined(CONFIG_NFS_V4_1)
1250/*
1251 * NFSv4.1 callback thread helper
1252 * For CB_COMPOUND calls, find a client by IP address, protocol version,
1253 * minorversion, and sessionID
1254 *
1255 * Returns NULL if no such client
1256 */
1257struct nfs_client *
1258nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr,
1259 struct nfs4_sessionid *sid)
1260{
1261 struct nfs_client *clp;
1262 struct nfs_net *nn = net_generic(net, nfs_net_id);
1263
1264 spin_lock(&nn->nfs_client_lock);
1265 list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) {
1266 if (nfs4_cb_match_client(addr, clp, 1) == false)
1267 continue;
1268
1269 if (!nfs4_has_session(clp))
1270 continue;
1271
1272 /* Match sessionid*/
1273 if (memcmp(clp->cl_session->sess_id.data,
1274 sid->data, NFS4_MAX_SESSIONID_LEN) != 0)
1275 continue;
1276
1277 atomic_inc(&clp->cl_count);
1278 spin_unlock(&nn->nfs_client_lock);
1279 return clp;
1280 }
1281 spin_unlock(&nn->nfs_client_lock);
1282 return NULL;
1283}
1284
1285#else /* CONFIG_NFS_V4_1 */
1286
1287struct nfs_client *
1288nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr,
1289 struct nfs4_sessionid *sid)
1290{
1291 return NULL;
1292}
1293#endif /* CONFIG_NFS_V4_1 */
1294
1295/*
1296 * Initialize the NFS4 callback service
1297 */
1298static int nfs4_init_callback(struct nfs_client *clp)
1299{
1300 int error;
1301
1302 if (clp->rpc_ops->version == 4) {
1303 struct rpc_xprt *xprt;
1304
1305 xprt = rcu_dereference_raw(clp->cl_rpcclient->cl_xprt);
1306
1307 if (nfs4_has_session(clp)) {
1308 error = xprt_setup_backchannel(xprt,
1309 NFS41_BC_MIN_CALLBACKS);
1310 if (error < 0)
1311 return error;
1312 }
1313
1314 error = nfs_callback_up(clp->cl_mvops->minor_version, xprt);
1315 if (error < 0) {
1316 dprintk("%s: failed to start callback. Error = %d\n",
1317 __func__, error);
1318 return error;
1319 }
1320 __set_bit(NFS_CS_CALLBACK, &clp->cl_res_state);
1321 }
1322 return 0;
1323}
1324
1325/*
1326 * Initialize the minor version specific parts of an NFS4 client record
1327 */
1328static int nfs4_init_client_minor_version(struct nfs_client *clp)
1329{
1330#if defined(CONFIG_NFS_V4_1)
1331 if (clp->cl_mvops->minor_version) {
1332 struct nfs4_session *session = NULL;
1333 /*
1334 * Create the session and mark it expired.
1335 * When a SEQUENCE operation encounters the expired session
1336 * it will do session recovery to initialize it.
1337 */
1338 session = nfs4_alloc_session(clp);
1339 if (!session)
1340 return -ENOMEM;
1341
1342 clp->cl_session = session;
1343 /*
1344 * The create session reply races with the server back
1345 * channel probe. Mark the client NFS_CS_SESSION_INITING
1346 * so that the client back channel can find the
1347 * nfs_client struct
1348 */
1349 nfs_mark_client_ready(clp, NFS_CS_SESSION_INITING);
1350 }
1351#endif /* CONFIG_NFS_V4_1 */
1352
1353 return nfs4_init_callback(clp);
1354}
1355
1356/**
1357 * nfs4_init_client - Initialise an NFS4 client record
1358 *
1359 * @clp: nfs_client to initialise
1360 * @timeparms: timeout parameters for underlying RPC transport
1361 * @ip_addr: callback IP address in presentation format
1362 * @authflavor: authentication flavor for underlying RPC transport
1363 *
1364 * Returns pointer to an NFS client, or an ERR_PTR value.
1365 */
1366struct nfs_client *nfs4_init_client(struct nfs_client *clp,
1367 const struct rpc_timeout *timeparms,
1368 const char *ip_addr,
1369 rpc_authflavor_t authflavour)
1370{
1371 char buf[INET6_ADDRSTRLEN + 1];
1372 int error;
1373
1374 if (clp->cl_cons_state == NFS_CS_READY) {
1375 /* the client is initialised already */
1376 dprintk("<-- nfs4_init_client() = 0 [already %p]\n", clp);
1377 return clp;
1378 }
1379
1380 /* Check NFS protocol revision and initialize RPC op vector */
1381 clp->rpc_ops = &nfs_v4_clientops;
1382
1383 __set_bit(NFS_CS_DISCRTRY, &clp->cl_flags);
1384 error = nfs_create_rpc_client(clp, timeparms, authflavour);
1385 if (error < 0)
1386 goto error;
1387
1388 /* If no clientaddr= option was specified, find a usable cb address */
1389 if (ip_addr == NULL) {
1390 struct sockaddr_storage cb_addr;
1391 struct sockaddr *sap = (struct sockaddr *)&cb_addr;
1392
1393 error = rpc_localaddr(clp->cl_rpcclient, sap, sizeof(cb_addr));
1394 if (error < 0)
1395 goto error;
1396 error = rpc_ntop(sap, buf, sizeof(buf));
1397 if (error < 0)
1398 goto error;
1399 ip_addr = (const char *)buf;
1400 }
1401 strlcpy(clp->cl_ipaddr, ip_addr, sizeof(clp->cl_ipaddr));
1402
1403 error = nfs_idmap_new(clp);
1404 if (error < 0) {
1405 dprintk("%s: failed to create idmapper. Error = %d\n",
1406 __func__, error);
1407 goto error;
1408 }
1409 __set_bit(NFS_CS_IDMAP, &clp->cl_res_state);
1410
1411 error = nfs4_init_client_minor_version(clp);
1412 if (error < 0)
1413 goto error;
1414
1415 if (!nfs4_has_session(clp))
1416 nfs_mark_client_ready(clp, NFS_CS_READY);
1417 return clp;
1418
1419error:
1420 nfs_mark_client_ready(clp, error);
1421 nfs_put_client(clp);
1422 dprintk("<-- nfs4_init_client() = xerror %d\n", error);
1423 return ERR_PTR(error);
1424}
1425
1426/*
1427 * Set up an NFS4 client
1428 */
1429static int nfs4_set_client(struct nfs_server *server,
1430 const char *hostname,
1431 const struct sockaddr *addr,
1432 const size_t addrlen,
1433 const char *ip_addr,
1434 rpc_authflavor_t authflavour,
1435 int proto, const struct rpc_timeout *timeparms,
1436 u32 minorversion, struct net *net)
1437{
1438 struct nfs_client_initdata cl_init = {
1439 .hostname = hostname,
1440 .addr = addr,
1441 .addrlen = addrlen,
1442 .rpc_ops = &nfs_v4_clientops,
1443 .proto = proto,
1444 .minorversion = minorversion,
1445 .net = net,
1446 };
1447 struct nfs_client *clp;
1448 int error;
1449
1450 dprintk("--> nfs4_set_client()\n");
1451
1452 if (server->flags & NFS_MOUNT_NORESVPORT)
1453 set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
1454
1455 /* Allocate or find a client reference we can use */
1456 clp = nfs_get_client(&cl_init, timeparms, ip_addr, authflavour);
1457 if (IS_ERR(clp)) {
1458 error = PTR_ERR(clp);
1459 goto error;
1460 }
1461
1462 /*
1463 * Query for the lease time on clientid setup or renewal
1464 *
1465 * Note that this will be set on nfs_clients that were created
1466 * only for the DS role and did not set this bit, but now will
1467 * serve a dual role.
1468 */
1469 set_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state);
1470
1471 server->nfs_client = clp;
1472 dprintk("<-- nfs4_set_client() = 0 [new %p]\n", clp);
1473 return 0;
1474error:
1475 dprintk("<-- nfs4_set_client() = xerror %d\n", error);
1476 return error;
1477}
1478
1479/*
1480 * Set up a pNFS Data Server client.
1481 *
1482 * Return any existing nfs_client that matches server address,port,version
1483 * and minorversion.
1484 *
1485 * For a new nfs_client, use a soft mount (default), a low retrans and a
1486 * low timeout interval so that if a connection is lost, we retry through
1487 * the MDS.
1488 */
1489struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp,
1490 const struct sockaddr *ds_addr, int ds_addrlen,
1491 int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans)
1492{
1493 struct nfs_client_initdata cl_init = {
1494 .addr = ds_addr,
1495 .addrlen = ds_addrlen,
1496 .rpc_ops = &nfs_v4_clientops,
1497 .proto = ds_proto,
1498 .minorversion = mds_clp->cl_minorversion,
1499 .net = mds_clp->cl_net,
1500 };
1501 struct rpc_timeout ds_timeout;
1502 struct nfs_client *clp;
1503
1504 /*
1505 * Set an authflavor equual to the MDS value. Use the MDS nfs_client
1506 * cl_ipaddr so as to use the same EXCHANGE_ID co_ownerid as the MDS
1507 * (section 13.1 RFC 5661).
1508 */
1509 nfs_init_timeout_values(&ds_timeout, ds_proto, ds_timeo, ds_retrans);
1510 clp = nfs_get_client(&cl_init, &ds_timeout, mds_clp->cl_ipaddr,
1511 mds_clp->cl_rpcclient->cl_auth->au_flavor);
1512
1513 dprintk("<-- %s %p\n", __func__, clp);
1514 return clp;
1515}
1516EXPORT_SYMBOL_GPL(nfs4_set_ds_client);
1517
1518/*
1519 * Session has been established, and the client marked ready.
1520 * Set the mount rsize and wsize with negotiated fore channel
1521 * attributes which will be bound checked in nfs_server_set_fsinfo.
1522 */
1523static void nfs4_session_set_rwsize(struct nfs_server *server)
1524{
1525#ifdef CONFIG_NFS_V4_1
1526 struct nfs4_session *sess;
1527 u32 server_resp_sz;
1528 u32 server_rqst_sz;
1529
1530 if (!nfs4_has_session(server->nfs_client))
1531 return;
1532 sess = server->nfs_client->cl_session;
1533 server_resp_sz = sess->fc_attrs.max_resp_sz - nfs41_maxread_overhead;
1534 server_rqst_sz = sess->fc_attrs.max_rqst_sz - nfs41_maxwrite_overhead;
1535
1536 if (server->rsize > server_resp_sz)
1537 server->rsize = server_resp_sz;
1538 if (server->wsize > server_rqst_sz)
1539 server->wsize = server_rqst_sz;
1540#endif /* CONFIG_NFS_V4_1 */
1541}
1542
1543static int nfs4_server_common_setup(struct nfs_server *server,
1544 struct nfs_fh *mntfh)
1545{
1546 struct nfs_fattr *fattr;
1547 int error;
1548
1549 BUG_ON(!server->nfs_client);
1550 BUG_ON(!server->nfs_client->rpc_ops);
1551 BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops);
1552
1553 /* data servers support only a subset of NFSv4.1 */
1554 if (is_ds_only_client(server->nfs_client))
1555 return -EPROTONOSUPPORT;
1556
1557 fattr = nfs_alloc_fattr();
1558 if (fattr == NULL)
1559 return -ENOMEM;
1560
1561 /* We must ensure the session is initialised first */
1562 error = nfs4_init_session(server);
1563 if (error < 0)
1564 goto out;
1565
1566 /* Probe the root fh to retrieve its FSID and filehandle */
1567 error = nfs4_get_rootfh(server, mntfh);
1568 if (error < 0)
1569 goto out;
1570
1571 dprintk("Server FSID: %llx:%llx\n",
1572 (unsigned long long) server->fsid.major,
1573 (unsigned long long) server->fsid.minor);
1574 dprintk("Mount FH: %d\n", mntfh->size);
1575
1576 nfs4_session_set_rwsize(server);
1577
1578 error = nfs_probe_fsinfo(server, mntfh, fattr);
1579 if (error < 0)
1580 goto out;
1581
1582 if (server->namelen == 0 || server->namelen > NFS4_MAXNAMLEN)
1583 server->namelen = NFS4_MAXNAMLEN;
1584
1585 nfs_server_insert_lists(server);
1586 server->mount_time = jiffies;
1587 server->destroy = nfs4_destroy_server;
1588out:
1589 nfs_free_fattr(fattr);
1590 return error;
1591}
1592
1593/*
1594 * Create a version 4 volume record
1595 */
1596static int nfs4_init_server(struct nfs_server *server,
1597 const struct nfs_parsed_mount_data *data)
1598{
1599 struct rpc_timeout timeparms;
1600 int error;
1601
1602 dprintk("--> nfs4_init_server()\n");
1603
1604 nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
1605 data->timeo, data->retrans);
1606
1607 /* Initialise the client representation from the mount data */
1608 server->flags = data->flags;
1609 server->caps |= NFS_CAP_ATOMIC_OPEN|NFS_CAP_CHANGE_ATTR|NFS_CAP_POSIX_LOCK;
1610 if (!(data->flags & NFS_MOUNT_NORDIRPLUS))
1611 server->caps |= NFS_CAP_READDIRPLUS;
1612 server->options = data->options;
1613
1614 /* Get a client record */
1615 error = nfs4_set_client(server,
1616 data->nfs_server.hostname,
1617 (const struct sockaddr *)&data->nfs_server.address,
1618 data->nfs_server.addrlen,
1619 data->client_address,
1620 data->auth_flavors[0],
1621 data->nfs_server.protocol,
1622 &timeparms,
1623 data->minorversion,
1624 data->net);
1625 if (error < 0)
1626 goto error;
1627
1628 /*
1629 * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower
1630 * authentication.
1631 */
1632 if (nfs4_disable_idmapping && data->auth_flavors[0] == RPC_AUTH_UNIX)
1633 server->caps |= NFS_CAP_UIDGID_NOMAP;
1634
1635 if (data->rsize)
1636 server->rsize = nfs_block_size(data->rsize, NULL);
1637 if (data->wsize)
1638 server->wsize = nfs_block_size(data->wsize, NULL);
1639
1640 server->acregmin = data->acregmin * HZ;
1641 server->acregmax = data->acregmax * HZ;
1642 server->acdirmin = data->acdirmin * HZ;
1643 server->acdirmax = data->acdirmax * HZ;
1644
1645 server->port = data->nfs_server.port;
1646
1647 error = nfs_init_server_rpcclient(server, &timeparms, data->auth_flavors[0]);
1648
1649error:
1650 /* Done */
1651 dprintk("<-- nfs4_init_server() = %d\n", error);
1652 return error;
1653}
1654
1655/*
1656 * Create a version 4 volume record
1657 * - keyed on server and FSID
1658 */
1659struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
1660 struct nfs_fh *mntfh)
1661{
1662 struct nfs_server *server;
1663 int error;
1664
1665 dprintk("--> nfs4_create_server()\n");
1666
1667 server = nfs_alloc_server();
1668 if (!server)
1669 return ERR_PTR(-ENOMEM);
1670
1671 /* set up the general RPC client */
1672 error = nfs4_init_server(server, data);
1673 if (error < 0)
1674 goto error;
1675
1676 error = nfs4_server_common_setup(server, mntfh);
1677 if (error < 0)
1678 goto error;
1679
1680 dprintk("<-- nfs4_create_server() = %p\n", server);
1681 return server;
1682
1683error:
1684 nfs_free_server(server);
1685 dprintk("<-- nfs4_create_server() = error %d\n", error);
1686 return ERR_PTR(error);
1687}
1688
1689/*
1690 * Create an NFS4 referral server record
1691 */
1692struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
1693 struct nfs_fh *mntfh)
1694{
1695 struct nfs_client *parent_client;
1696 struct nfs_server *server, *parent_server;
1697 int error;
1698
1699 dprintk("--> nfs4_create_referral_server()\n");
1700
1701 server = nfs_alloc_server();
1702 if (!server)
1703 return ERR_PTR(-ENOMEM);
1704
1705 parent_server = NFS_SB(data->sb);
1706 parent_client = parent_server->nfs_client;
1707
1708 /* Initialise the client representation from the parent server */
1709 nfs_server_copy_userdata(server, parent_server);
1710 server->caps |= NFS_CAP_ATOMIC_OPEN|NFS_CAP_CHANGE_ATTR;
1711
1712 /* Get a client representation.
1713 * Note: NFSv4 always uses TCP, */
1714 error = nfs4_set_client(server, data->hostname,
1715 data->addr,
1716 data->addrlen,
1717 parent_client->cl_ipaddr,
1718 data->authflavor,
1719 rpc_protocol(parent_server->client),
1720 parent_server->client->cl_timeout,
1721 parent_client->cl_mvops->minor_version,
1722 parent_client->cl_net);
1723 if (error < 0)
1724 goto error;
1725
1726 error = nfs_init_server_rpcclient(server, parent_server->client->cl_timeout, data->authflavor);
1727 if (error < 0)
1728 goto error;
1729
1730 error = nfs4_server_common_setup(server, mntfh);
1731 if (error < 0)
1732 goto error;
1733
1734 dprintk("<-- nfs_create_referral_server() = %p\n", server);
1735 return server;
1736
1737error:
1738 nfs_free_server(server);
1739 dprintk("<-- nfs4_create_referral_server() = error %d\n", error);
1740 return ERR_PTR(error);
1741}
1742
1743#endif /* CONFIG_NFS_V4 */
1744
1745/* 1098/*
1746 * Clone an NFS2, NFS3 or NFS4 server record 1099 * Clone an NFS2, NFS3 or NFS4 server record
1747 */ 1100 */
@@ -2091,7 +1444,3 @@ void nfs_fs_proc_exit(void)
2091} 1444}
2092 1445
2093#endif /* CONFIG_PROC_FS */ 1446#endif /* CONFIG_PROC_FS */
2094
2095module_param(nfs4_disable_idmapping, bool, 0644);
2096MODULE_PARM_DESC(nfs4_disable_idmapping,
2097 "Turn off NFSv4 idmapping when using 'sec=sys'");
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index bd3a9601d32d..81c5eec3cf38 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -47,7 +47,7 @@ void nfs_mark_delegation_referenced(struct nfs_delegation *delegation)
47 * 47 *
48 * Returns one if inode has the indicated delegation, otherwise zero. 48 * Returns one if inode has the indicated delegation, otherwise zero.
49 */ 49 */
50int nfs_have_delegation(struct inode *inode, fmode_t flags) 50int nfs4_have_delegation(struct inode *inode, fmode_t flags)
51{ 51{
52 struct nfs_delegation *delegation; 52 struct nfs_delegation *delegation;
53 int ret = 0; 53 int ret = 0;
@@ -388,7 +388,7 @@ void nfs_inode_return_delegation_noreclaim(struct inode *inode)
388 * 388 *
389 * Returns zero on success, or a negative errno value. 389 * Returns zero on success, or a negative errno value.
390 */ 390 */
391int nfs_inode_return_delegation(struct inode *inode) 391int nfs4_inode_return_delegation(struct inode *inode)
392{ 392{
393 struct nfs_server *server = NFS_SERVER(inode); 393 struct nfs_server *server = NFS_SERVER(inode);
394 struct nfs_inode *nfsi = NFS_I(inode); 394 struct nfs_inode *nfsi = NFS_I(inode);
@@ -417,9 +417,8 @@ static void nfs_mark_return_delegation(struct nfs_server *server,
417 * @sb: sb to process 417 * @sb: sb to process
418 * 418 *
419 */ 419 */
420void nfs_super_return_all_delegations(struct super_block *sb) 420void nfs_server_return_all_delegations(struct nfs_server *server)
421{ 421{
422 struct nfs_server *server = NFS_SB(sb);
423 struct nfs_client *clp = server->nfs_client; 422 struct nfs_client *clp = server->nfs_client;
424 struct nfs_delegation *delegation; 423 struct nfs_delegation *delegation;
425 424
diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
index 72709c4193fa..1f3ccd934635 100644
--- a/fs/nfs/delegation.h
+++ b/fs/nfs/delegation.h
@@ -33,12 +33,12 @@ enum {
33 33
34int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); 34int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
35void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); 35void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
36int nfs_inode_return_delegation(struct inode *inode); 36int nfs4_inode_return_delegation(struct inode *inode);
37int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid); 37int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid);
38void nfs_inode_return_delegation_noreclaim(struct inode *inode); 38void nfs_inode_return_delegation_noreclaim(struct inode *inode);
39 39
40struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle); 40struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle);
41void nfs_super_return_all_delegations(struct super_block *sb); 41void nfs_server_return_all_delegations(struct nfs_server *);
42void nfs_expire_all_delegations(struct nfs_client *clp); 42void nfs_expire_all_delegations(struct nfs_client *clp);
43void nfs_expire_all_delegation_types(struct nfs_client *clp, fmode_t flags); 43void nfs_expire_all_delegation_types(struct nfs_client *clp, fmode_t flags);
44void nfs_expire_unreferenced_delegations(struct nfs_client *clp); 44void nfs_expire_unreferenced_delegations(struct nfs_client *clp);
@@ -56,24 +56,13 @@ int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl);
56bool nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode, fmode_t flags); 56bool nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode, fmode_t flags);
57 57
58void nfs_mark_delegation_referenced(struct nfs_delegation *delegation); 58void nfs_mark_delegation_referenced(struct nfs_delegation *delegation);
59int nfs_have_delegation(struct inode *inode, fmode_t flags); 59int nfs4_have_delegation(struct inode *inode, fmode_t flags);
60 60
61#else
62static inline int nfs_have_delegation(struct inode *inode, fmode_t flags)
63{
64 return 0;
65}
66
67static inline int nfs_inode_return_delegation(struct inode *inode)
68{
69 nfs_wb_all(inode);
70 return 0;
71}
72#endif 61#endif
73 62
74static inline int nfs_have_delegated_attributes(struct inode *inode) 63static inline int nfs_have_delegated_attributes(struct inode *inode)
75{ 64{
76 return nfs_have_delegation(inode, FMODE_READ) && 65 return NFS_PROTO(inode)->have_delegation(inode, FMODE_READ) &&
77 !(NFS_I(inode)->cache_validity & NFS_INO_REVAL_FORCED); 66 !(NFS_I(inode)->cache_validity & NFS_INO_REVAL_FORCED);
78} 67}
79 68
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index a6b1c7fb8232..d49f1b9cd3fd 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -46,16 +46,6 @@
46static int nfs_opendir(struct inode *, struct file *); 46static int nfs_opendir(struct inode *, struct file *);
47static int nfs_closedir(struct inode *, struct file *); 47static int nfs_closedir(struct inode *, struct file *);
48static int nfs_readdir(struct file *, void *, filldir_t); 48static int nfs_readdir(struct file *, void *, filldir_t);
49static struct dentry *nfs_lookup(struct inode *, struct dentry *, unsigned int);
50static int nfs_create(struct inode *, struct dentry *, umode_t, bool);
51static int nfs_mkdir(struct inode *, struct dentry *, umode_t);
52static int nfs_rmdir(struct inode *, struct dentry *);
53static int nfs_unlink(struct inode *, struct dentry *);
54static int nfs_symlink(struct inode *, struct dentry *, const char *);
55static int nfs_link(struct dentry *, struct inode *, struct dentry *);
56static int nfs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
57static int nfs_rename(struct inode *, struct dentry *,
58 struct inode *, struct dentry *);
59static int nfs_fsync_dir(struct file *, loff_t, loff_t, int); 49static int nfs_fsync_dir(struct file *, loff_t, loff_t, int);
60static loff_t nfs_llseek_dir(struct file *, loff_t, int); 50static loff_t nfs_llseek_dir(struct file *, loff_t, int);
61static void nfs_readdir_clear_array(struct page*); 51static void nfs_readdir_clear_array(struct page*);
@@ -69,73 +59,10 @@ const struct file_operations nfs_dir_operations = {
69 .fsync = nfs_fsync_dir, 59 .fsync = nfs_fsync_dir,
70}; 60};
71 61
72const struct inode_operations nfs_dir_inode_operations = {
73 .create = nfs_create,
74 .lookup = nfs_lookup,
75 .link = nfs_link,
76 .unlink = nfs_unlink,
77 .symlink = nfs_symlink,
78 .mkdir = nfs_mkdir,
79 .rmdir = nfs_rmdir,
80 .mknod = nfs_mknod,
81 .rename = nfs_rename,
82 .permission = nfs_permission,
83 .getattr = nfs_getattr,
84 .setattr = nfs_setattr,
85};
86
87const struct address_space_operations nfs_dir_aops = { 62const struct address_space_operations nfs_dir_aops = {
88 .freepage = nfs_readdir_clear_array, 63 .freepage = nfs_readdir_clear_array,
89}; 64};
90 65
91#ifdef CONFIG_NFS_V3
92const struct inode_operations nfs3_dir_inode_operations = {
93 .create = nfs_create,
94 .lookup = nfs_lookup,
95 .link = nfs_link,
96 .unlink = nfs_unlink,
97 .symlink = nfs_symlink,
98 .mkdir = nfs_mkdir,
99 .rmdir = nfs_rmdir,
100 .mknod = nfs_mknod,
101 .rename = nfs_rename,
102 .permission = nfs_permission,
103 .getattr = nfs_getattr,
104 .setattr = nfs_setattr,
105 .listxattr = nfs3_listxattr,
106 .getxattr = nfs3_getxattr,
107 .setxattr = nfs3_setxattr,
108 .removexattr = nfs3_removexattr,
109};
110#endif /* CONFIG_NFS_V3 */
111
112#ifdef CONFIG_NFS_V4
113
114static int nfs_atomic_open(struct inode *, struct dentry *,
115 struct file *, unsigned, umode_t,
116 int *);
117const struct inode_operations nfs4_dir_inode_operations = {
118 .create = nfs_create,
119 .lookup = nfs_lookup,
120 .atomic_open = nfs_atomic_open,
121 .link = nfs_link,
122 .unlink = nfs_unlink,
123 .symlink = nfs_symlink,
124 .mkdir = nfs_mkdir,
125 .rmdir = nfs_rmdir,
126 .mknod = nfs_mknod,
127 .rename = nfs_rename,
128 .permission = nfs_permission,
129 .getattr = nfs_getattr,
130 .setattr = nfs_setattr,
131 .getxattr = generic_getxattr,
132 .setxattr = generic_setxattr,
133 .listxattr = generic_listxattr,
134 .removexattr = generic_removexattr,
135};
136
137#endif /* CONFIG_NFS_V4 */
138
139static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir, struct rpc_cred *cred) 66static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir, struct rpc_cred *cred)
140{ 67{
141 struct nfs_open_dir_context *ctx; 68 struct nfs_open_dir_context *ctx;
@@ -1128,7 +1055,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
1128 goto out_bad; 1055 goto out_bad;
1129 } 1056 }
1130 1057
1131 if (nfs_have_delegation(inode, FMODE_READ)) 1058 if (NFS_PROTO(dir)->have_delegation(inode, FMODE_READ))
1132 goto out_set_verifier; 1059 goto out_set_verifier;
1133 1060
1134 /* Force a full look up iff the parent directory has changed */ 1061 /* Force a full look up iff the parent directory has changed */
@@ -1270,7 +1197,7 @@ const struct dentry_operations nfs_dentry_operations = {
1270 .d_release = nfs_d_release, 1197 .d_release = nfs_d_release,
1271}; 1198};
1272 1199
1273static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned int flags) 1200struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned int flags)
1274{ 1201{
1275 struct dentry *res; 1202 struct dentry *res;
1276 struct dentry *parent; 1203 struct dentry *parent;
@@ -1398,9 +1325,9 @@ out:
1398 return err; 1325 return err;
1399} 1326}
1400 1327
1401static int nfs_atomic_open(struct inode *dir, struct dentry *dentry, 1328int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
1402 struct file *file, unsigned open_flags, 1329 struct file *file, unsigned open_flags,
1403 umode_t mode, int *opened) 1330 umode_t mode, int *opened)
1404{ 1331{
1405 struct nfs_open_context *ctx; 1332 struct nfs_open_context *ctx;
1406 struct dentry *res; 1333 struct dentry *res;
@@ -1588,7 +1515,7 @@ out_error:
1588 * that the operation succeeded on the server, but an error in the 1515 * that the operation succeeded on the server, but an error in the
1589 * reply path made it appear to have failed. 1516 * reply path made it appear to have failed.
1590 */ 1517 */
1591static int nfs_create(struct inode *dir, struct dentry *dentry, 1518int nfs_create(struct inode *dir, struct dentry *dentry,
1592 umode_t mode, bool excl) 1519 umode_t mode, bool excl)
1593{ 1520{
1594 struct iattr attr; 1521 struct iattr attr;
@@ -1613,7 +1540,7 @@ out_err:
1613/* 1540/*
1614 * See comments for nfs_proc_create regarding failed operations. 1541 * See comments for nfs_proc_create regarding failed operations.
1615 */ 1542 */
1616static int 1543int
1617nfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) 1544nfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev)
1618{ 1545{
1619 struct iattr attr; 1546 struct iattr attr;
@@ -1640,7 +1567,7 @@ out_err:
1640/* 1567/*
1641 * See comments for nfs_proc_create regarding failed operations. 1568 * See comments for nfs_proc_create regarding failed operations.
1642 */ 1569 */
1643static int nfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) 1570int nfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
1644{ 1571{
1645 struct iattr attr; 1572 struct iattr attr;
1646 int error; 1573 int error;
@@ -1666,7 +1593,7 @@ static void nfs_dentry_handle_enoent(struct dentry *dentry)
1666 d_delete(dentry); 1593 d_delete(dentry);
1667} 1594}
1668 1595
1669static int nfs_rmdir(struct inode *dir, struct dentry *dentry) 1596int nfs_rmdir(struct inode *dir, struct dentry *dentry)
1670{ 1597{
1671 int error; 1598 int error;
1672 1599
@@ -1706,7 +1633,7 @@ static int nfs_safe_remove(struct dentry *dentry)
1706 } 1633 }
1707 1634
1708 if (inode != NULL) { 1635 if (inode != NULL) {
1709 nfs_inode_return_delegation(inode); 1636 NFS_PROTO(inode)->return_delegation(inode);
1710 error = NFS_PROTO(dir)->remove(dir, &dentry->d_name); 1637 error = NFS_PROTO(dir)->remove(dir, &dentry->d_name);
1711 /* The VFS may want to delete this inode */ 1638 /* The VFS may want to delete this inode */
1712 if (error == 0) 1639 if (error == 0)
@@ -1725,7 +1652,7 @@ out:
1725 * 1652 *
1726 * If sillyrename() returns 0, we do nothing, otherwise we unlink. 1653 * If sillyrename() returns 0, we do nothing, otherwise we unlink.
1727 */ 1654 */
1728static int nfs_unlink(struct inode *dir, struct dentry *dentry) 1655int nfs_unlink(struct inode *dir, struct dentry *dentry)
1729{ 1656{
1730 int error; 1657 int error;
1731 int need_rehash = 0; 1658 int need_rehash = 0;
@@ -1769,7 +1696,7 @@ static int nfs_unlink(struct inode *dir, struct dentry *dentry)
1769 * now have a new file handle and can instantiate an in-core NFS inode 1696 * now have a new file handle and can instantiate an in-core NFS inode
1770 * and move the raw page into its mapping. 1697 * and move the raw page into its mapping.
1771 */ 1698 */
1772static int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) 1699int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
1773{ 1700{
1774 struct pagevec lru_pvec; 1701 struct pagevec lru_pvec;
1775 struct page *page; 1702 struct page *page;
@@ -1824,7 +1751,7 @@ static int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *sym
1824 return 0; 1751 return 0;
1825} 1752}
1826 1753
1827static int 1754int
1828nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) 1755nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
1829{ 1756{
1830 struct inode *inode = old_dentry->d_inode; 1757 struct inode *inode = old_dentry->d_inode;
@@ -1834,7 +1761,7 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
1834 old_dentry->d_parent->d_name.name, old_dentry->d_name.name, 1761 old_dentry->d_parent->d_name.name, old_dentry->d_name.name,
1835 dentry->d_parent->d_name.name, dentry->d_name.name); 1762 dentry->d_parent->d_name.name, dentry->d_name.name);
1836 1763
1837 nfs_inode_return_delegation(inode); 1764 NFS_PROTO(inode)->return_delegation(inode);
1838 1765
1839 d_drop(dentry); 1766 d_drop(dentry);
1840 error = NFS_PROTO(dir)->link(inode, dir, &dentry->d_name); 1767 error = NFS_PROTO(dir)->link(inode, dir, &dentry->d_name);
@@ -1869,7 +1796,7 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
1869 * If these conditions are met, we can drop the dentries before doing 1796 * If these conditions are met, we can drop the dentries before doing
1870 * the rename. 1797 * the rename.
1871 */ 1798 */
1872static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry, 1799int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
1873 struct inode *new_dir, struct dentry *new_dentry) 1800 struct inode *new_dir, struct dentry *new_dentry)
1874{ 1801{
1875 struct inode *old_inode = old_dentry->d_inode; 1802 struct inode *old_inode = old_dentry->d_inode;
@@ -1918,9 +1845,9 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
1918 } 1845 }
1919 } 1846 }
1920 1847
1921 nfs_inode_return_delegation(old_inode); 1848 NFS_PROTO(old_inode)->return_delegation(old_inode);
1922 if (new_inode != NULL) 1849 if (new_inode != NULL)
1923 nfs_inode_return_delegation(new_inode); 1850 NFS_PROTO(new_inode)->return_delegation(new_inode);
1924 1851
1925 error = NFS_PROTO(old_dir)->rename(old_dir, &old_dentry->d_name, 1852 error = NFS_PROTO(old_dir)->rename(old_dir, &old_dentry->d_name,
1926 new_dir, &new_dentry->d_name); 1853 new_dir, &new_dentry->d_name);
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 48253372ab1d..42dce909ec70 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -393,7 +393,7 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq,
393 size_t requested_bytes = 0; 393 size_t requested_bytes = 0;
394 unsigned long seg; 394 unsigned long seg;
395 395
396 nfs_pageio_init_read(&desc, dreq->inode, 396 NFS_PROTO(dreq->inode)->read_pageio_init(&desc, dreq->inode,
397 &nfs_direct_read_completion_ops); 397 &nfs_direct_read_completion_ops);
398 get_dreq(dreq); 398 get_dreq(dreq);
399 desc.pg_dreq = dreq; 399 desc.pg_dreq = dreq;
@@ -478,7 +478,7 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
478 dreq->count = 0; 478 dreq->count = 0;
479 get_dreq(dreq); 479 get_dreq(dreq);
480 480
481 nfs_pageio_init_write(&desc, dreq->inode, FLUSH_STABLE, 481 NFS_PROTO(dreq->inode)->write_pageio_init(&desc, dreq->inode, FLUSH_STABLE,
482 &nfs_direct_write_completion_ops); 482 &nfs_direct_write_completion_ops);
483 desc.pg_dreq = dreq; 483 desc.pg_dreq = dreq;
484 484
@@ -782,7 +782,7 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
782 size_t requested_bytes = 0; 782 size_t requested_bytes = 0;
783 unsigned long seg; 783 unsigned long seg;
784 784
785 nfs_pageio_init_write(&desc, inode, FLUSH_COND_STABLE, 785 NFS_PROTO(inode)->write_pageio_init(&desc, inode, FLUSH_COND_STABLE,
786 &nfs_direct_write_completion_ops); 786 &nfs_direct_write_completion_ops);
787 desc.pg_dreq = dreq; 787 desc.pg_dreq = dreq;
788 get_dreq(dreq); 788 get_dreq(dreq);
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index a6708e6b438d..70d124a61b98 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -35,36 +35,17 @@
35#include "internal.h" 35#include "internal.h"
36#include "iostat.h" 36#include "iostat.h"
37#include "fscache.h" 37#include "fscache.h"
38#include "pnfs.h"
39 38
40#define NFSDBG_FACILITY NFSDBG_FILE 39#define NFSDBG_FACILITY NFSDBG_FILE
41 40
42static const struct vm_operations_struct nfs_file_vm_ops; 41static const struct vm_operations_struct nfs_file_vm_ops;
43 42
44const struct inode_operations nfs_file_inode_operations = {
45 .permission = nfs_permission,
46 .getattr = nfs_getattr,
47 .setattr = nfs_setattr,
48};
49
50#ifdef CONFIG_NFS_V3
51const struct inode_operations nfs3_file_inode_operations = {
52 .permission = nfs_permission,
53 .getattr = nfs_getattr,
54 .setattr = nfs_setattr,
55 .listxattr = nfs3_listxattr,
56 .getxattr = nfs3_getxattr,
57 .setxattr = nfs3_setxattr,
58 .removexattr = nfs3_removexattr,
59};
60#endif /* CONFIG_NFS_v3 */
61
62/* Hack for future NFS swap support */ 43/* Hack for future NFS swap support */
63#ifndef IS_SWAPFILE 44#ifndef IS_SWAPFILE
64# define IS_SWAPFILE(inode) (0) 45# define IS_SWAPFILE(inode) (0)
65#endif 46#endif
66 47
67static int nfs_check_flags(int flags) 48int nfs_check_flags(int flags)
68{ 49{
69 if ((flags & (O_APPEND | O_DIRECT)) == (O_APPEND | O_DIRECT)) 50 if ((flags & (O_APPEND | O_DIRECT)) == (O_APPEND | O_DIRECT))
70 return -EINVAL; 51 return -EINVAL;
@@ -93,7 +74,7 @@ nfs_file_open(struct inode *inode, struct file *filp)
93 return res; 74 return res;
94} 75}
95 76
96static int 77int
97nfs_file_release(struct inode *inode, struct file *filp) 78nfs_file_release(struct inode *inode, struct file *filp)
98{ 79{
99 dprintk("NFS: release(%s/%s)\n", 80 dprintk("NFS: release(%s/%s)\n",
@@ -135,7 +116,7 @@ force_reval:
135 return __nfs_revalidate_inode(server, inode); 116 return __nfs_revalidate_inode(server, inode);
136} 117}
137 118
138static loff_t nfs_file_llseek(struct file *filp, loff_t offset, int origin) 119loff_t nfs_file_llseek(struct file *filp, loff_t offset, int origin)
139{ 120{
140 dprintk("NFS: llseek file(%s/%s, %lld, %d)\n", 121 dprintk("NFS: llseek file(%s/%s, %lld, %d)\n",
141 filp->f_path.dentry->d_parent->d_name.name, 122 filp->f_path.dentry->d_parent->d_name.name,
@@ -160,7 +141,7 @@ static loff_t nfs_file_llseek(struct file *filp, loff_t offset, int origin)
160/* 141/*
161 * Flush all dirty pages, and check for write errors. 142 * Flush all dirty pages, and check for write errors.
162 */ 143 */
163static int 144int
164nfs_file_flush(struct file *file, fl_owner_t id) 145nfs_file_flush(struct file *file, fl_owner_t id)
165{ 146{
166 struct dentry *dentry = file->f_path.dentry; 147 struct dentry *dentry = file->f_path.dentry;
@@ -178,14 +159,14 @@ nfs_file_flush(struct file *file, fl_owner_t id)
178 * If we're holding a write delegation, then just start the i/o 159 * If we're holding a write delegation, then just start the i/o
179 * but don't wait for completion (or send a commit). 160 * but don't wait for completion (or send a commit).
180 */ 161 */
181 if (nfs_have_delegation(inode, FMODE_WRITE)) 162 if (NFS_PROTO(inode)->have_delegation(inode, FMODE_WRITE))
182 return filemap_fdatawrite(file->f_mapping); 163 return filemap_fdatawrite(file->f_mapping);
183 164
184 /* Flush writes to the server and return any errors */ 165 /* Flush writes to the server and return any errors */
185 return vfs_fsync(file, 0); 166 return vfs_fsync(file, 0);
186} 167}
187 168
188static ssize_t 169ssize_t
189nfs_file_read(struct kiocb *iocb, const struct iovec *iov, 170nfs_file_read(struct kiocb *iocb, const struct iovec *iov,
190 unsigned long nr_segs, loff_t pos) 171 unsigned long nr_segs, loff_t pos)
191{ 172{
@@ -209,7 +190,7 @@ nfs_file_read(struct kiocb *iocb, const struct iovec *iov,
209 return result; 190 return result;
210} 191}
211 192
212static ssize_t 193ssize_t
213nfs_file_splice_read(struct file *filp, loff_t *ppos, 194nfs_file_splice_read(struct file *filp, loff_t *ppos,
214 struct pipe_inode_info *pipe, size_t count, 195 struct pipe_inode_info *pipe, size_t count,
215 unsigned int flags) 196 unsigned int flags)
@@ -231,7 +212,7 @@ nfs_file_splice_read(struct file *filp, loff_t *ppos,
231 return res; 212 return res;
232} 213}
233 214
234static int 215int
235nfs_file_mmap(struct file * file, struct vm_area_struct * vma) 216nfs_file_mmap(struct file * file, struct vm_area_struct * vma)
236{ 217{
237 struct dentry *dentry = file->f_path.dentry; 218 struct dentry *dentry = file->f_path.dentry;
@@ -264,8 +245,8 @@ nfs_file_mmap(struct file * file, struct vm_area_struct * vma)
264 * nfs_file_write() that a write error occurred, and hence cause it to 245 * nfs_file_write() that a write error occurred, and hence cause it to
265 * fall back to doing a synchronous write. 246 * fall back to doing a synchronous write.
266 */ 247 */
267static int 248int
268nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) 249nfs_file_fsync_commit(struct file *file, loff_t start, loff_t end, int datasync)
269{ 250{
270 struct dentry *dentry = file->f_path.dentry; 251 struct dentry *dentry = file->f_path.dentry;
271 struct nfs_open_context *ctx = nfs_file_open_context(file); 252 struct nfs_open_context *ctx = nfs_file_open_context(file);
@@ -277,9 +258,6 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
277 dentry->d_parent->d_name.name, dentry->d_name.name, 258 dentry->d_parent->d_name.name, dentry->d_name.name,
278 datasync); 259 datasync);
279 260
280 ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
281 mutex_lock(&inode->i_mutex);
282
283 nfs_inc_stats(inode, NFSIOS_VFSFSYNC); 261 nfs_inc_stats(inode, NFSIOS_VFSFSYNC);
284 have_error = test_and_clear_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags); 262 have_error = test_and_clear_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags);
285 status = nfs_commit_inode(inode, FLUSH_SYNC); 263 status = nfs_commit_inode(inode, FLUSH_SYNC);
@@ -290,10 +268,20 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
290 ret = xchg(&ctx->error, 0); 268 ret = xchg(&ctx->error, 0);
291 if (!ret && status < 0) 269 if (!ret && status < 0)
292 ret = status; 270 ret = status;
293 if (!ret && !datasync) 271 return ret;
294 /* application has asked for meta-data sync */ 272}
295 ret = pnfs_layoutcommit_inode(inode, true); 273
274static int
275nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
276{
277 int ret;
278 struct inode *inode = file->f_path.dentry->d_inode;
279
280 ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
281 mutex_lock(&inode->i_mutex);
282 ret = nfs_file_fsync_commit(file, start, end, datasync);
296 mutex_unlock(&inode->i_mutex); 283 mutex_unlock(&inode->i_mutex);
284
297 return ret; 285 return ret;
298} 286}
299 287
@@ -572,8 +560,8 @@ static int nfs_need_sync_write(struct file *filp, struct inode *inode)
572 return 0; 560 return 0;
573} 561}
574 562
575static ssize_t nfs_file_write(struct kiocb *iocb, const struct iovec *iov, 563ssize_t nfs_file_write(struct kiocb *iocb, const struct iovec *iov,
576 unsigned long nr_segs, loff_t pos) 564 unsigned long nr_segs, loff_t pos)
577{ 565{
578 struct dentry * dentry = iocb->ki_filp->f_path.dentry; 566 struct dentry * dentry = iocb->ki_filp->f_path.dentry;
579 struct inode * inode = dentry->d_inode; 567 struct inode * inode = dentry->d_inode;
@@ -624,9 +612,9 @@ out_swapfile:
624 goto out; 612 goto out;
625} 613}
626 614
627static ssize_t nfs_file_splice_write(struct pipe_inode_info *pipe, 615ssize_t nfs_file_splice_write(struct pipe_inode_info *pipe,
628 struct file *filp, loff_t *ppos, 616 struct file *filp, loff_t *ppos,
629 size_t count, unsigned int flags) 617 size_t count, unsigned int flags)
630{ 618{
631 struct dentry *dentry = filp->f_path.dentry; 619 struct dentry *dentry = filp->f_path.dentry;
632 struct inode *inode = dentry->d_inode; 620 struct inode *inode = dentry->d_inode;
@@ -670,7 +658,7 @@ do_getlk(struct file *filp, int cmd, struct file_lock *fl, int is_local)
670 } 658 }
671 fl->fl_type = saved_type; 659 fl->fl_type = saved_type;
672 660
673 if (nfs_have_delegation(inode, FMODE_READ)) 661 if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ))
674 goto out_noconflict; 662 goto out_noconflict;
675 663
676 if (is_local) 664 if (is_local)
@@ -765,7 +753,7 @@ do_setlk(struct file *filp, int cmd, struct file_lock *fl, int is_local)
765 * This makes locking act as a cache coherency point. 753 * This makes locking act as a cache coherency point.
766 */ 754 */
767 nfs_sync_mapping(filp->f_mapping); 755 nfs_sync_mapping(filp->f_mapping);
768 if (!nfs_have_delegation(inode, FMODE_READ)) { 756 if (!NFS_PROTO(inode)->have_delegation(inode, FMODE_READ)) {
769 if (is_time_granular(&NFS_SERVER(inode)->time_delta)) 757 if (is_time_granular(&NFS_SERVER(inode)->time_delta))
770 __nfs_revalidate_inode(NFS_SERVER(inode), inode); 758 __nfs_revalidate_inode(NFS_SERVER(inode), inode);
771 else 759 else
@@ -778,7 +766,7 @@ out:
778/* 766/*
779 * Lock a (portion of) a file 767 * Lock a (portion of) a file
780 */ 768 */
781static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl) 769int nfs_lock(struct file *filp, int cmd, struct file_lock *fl)
782{ 770{
783 struct inode *inode = filp->f_mapping->host; 771 struct inode *inode = filp->f_mapping->host;
784 int ret = -ENOLCK; 772 int ret = -ENOLCK;
@@ -818,7 +806,7 @@ out_err:
818/* 806/*
819 * Lock a (portion of) a file 807 * Lock a (portion of) a file
820 */ 808 */
821static int nfs_flock(struct file *filp, int cmd, struct file_lock *fl) 809int nfs_flock(struct file *filp, int cmd, struct file_lock *fl)
822{ 810{
823 struct inode *inode = filp->f_mapping->host; 811 struct inode *inode = filp->f_mapping->host;
824 int is_local = 0; 812 int is_local = 0;
@@ -848,7 +836,7 @@ static int nfs_flock(struct file *filp, int cmd, struct file_lock *fl)
848 * There is no protocol support for leases, so we have no way to implement 836 * There is no protocol support for leases, so we have no way to implement
849 * them correctly in the face of opens by other clients. 837 * them correctly in the face of opens by other clients.
850 */ 838 */
851static int nfs_setlease(struct file *file, long arg, struct file_lock **fl) 839int nfs_setlease(struct file *file, long arg, struct file_lock **fl)
852{ 840{
853 dprintk("NFS: setlease(%s/%s, arg=%ld)\n", 841 dprintk("NFS: setlease(%s/%s, arg=%ld)\n",
854 file->f_path.dentry->d_parent->d_name.name, 842 file->f_path.dentry->d_parent->d_name.name,
@@ -874,104 +862,3 @@ const struct file_operations nfs_file_operations = {
874 .check_flags = nfs_check_flags, 862 .check_flags = nfs_check_flags,
875 .setlease = nfs_setlease, 863 .setlease = nfs_setlease,
876}; 864};
877
878#ifdef CONFIG_NFS_V4
879static int
880nfs4_file_open(struct inode *inode, struct file *filp)
881{
882 struct nfs_open_context *ctx;
883 struct dentry *dentry = filp->f_path.dentry;
884 struct dentry *parent = NULL;
885 struct inode *dir;
886 unsigned openflags = filp->f_flags;
887 struct iattr attr;
888 int err;
889
890 BUG_ON(inode != dentry->d_inode);
891 /*
892 * If no cached dentry exists or if it's negative, NFSv4 handled the
893 * opens in ->lookup() or ->create().
894 *
895 * We only get this far for a cached positive dentry. We skipped
896 * revalidation, so handle it here by dropping the dentry and returning
897 * -EOPENSTALE. The VFS will retry the lookup/create/open.
898 */
899
900 dprintk("NFS: open file(%s/%s)\n",
901 dentry->d_parent->d_name.name,
902 dentry->d_name.name);
903
904 if ((openflags & O_ACCMODE) == 3)
905 openflags--;
906
907 /* We can't create new files here */
908 openflags &= ~(O_CREAT|O_EXCL);
909
910 parent = dget_parent(dentry);
911 dir = parent->d_inode;
912
913 ctx = alloc_nfs_open_context(filp->f_path.dentry, filp->f_mode);
914 err = PTR_ERR(ctx);
915 if (IS_ERR(ctx))
916 goto out;
917
918 attr.ia_valid = ATTR_OPEN;
919 if (openflags & O_TRUNC) {
920 attr.ia_valid |= ATTR_SIZE;
921 attr.ia_size = 0;
922 nfs_wb_all(inode);
923 }
924
925 inode = NFS_PROTO(dir)->open_context(dir, ctx, openflags, &attr);
926 if (IS_ERR(inode)) {
927 err = PTR_ERR(inode);
928 switch (err) {
929 case -EPERM:
930 case -EACCES:
931 case -EDQUOT:
932 case -ENOSPC:
933 case -EROFS:
934 goto out_put_ctx;
935 default:
936 goto out_drop;
937 }
938 }
939 iput(inode);
940 if (inode != dentry->d_inode)
941 goto out_drop;
942
943 nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
944 nfs_file_set_open_context(filp, ctx);
945 err = 0;
946
947out_put_ctx:
948 put_nfs_open_context(ctx);
949out:
950 dput(parent);
951 return err;
952
953out_drop:
954 d_drop(dentry);
955 err = -EOPENSTALE;
956 goto out_put_ctx;
957}
958
959const struct file_operations nfs4_file_operations = {
960 .llseek = nfs_file_llseek,
961 .read = do_sync_read,
962 .write = do_sync_write,
963 .aio_read = nfs_file_read,
964 .aio_write = nfs_file_write,
965 .mmap = nfs_file_mmap,
966 .open = nfs4_file_open,
967 .flush = nfs_file_flush,
968 .release = nfs_file_release,
969 .fsync = nfs_file_fsync,
970 .lock = nfs_lock,
971 .flock = nfs_flock,
972 .splice_read = nfs_file_splice_read,
973 .splice_write = nfs_file_splice_write,
974 .check_flags = nfs_check_flags,
975 .setlease = nfs_setlease,
976};
977#endif /* CONFIG_NFS_V4 */
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index a67990f90bd7..4654ced096a6 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -23,21 +23,15 @@
23#include <linux/sunrpc/stats.h> 23#include <linux/sunrpc/stats.h>
24#include <linux/nfs_fs.h> 24#include <linux/nfs_fs.h>
25#include <linux/nfs_mount.h> 25#include <linux/nfs_mount.h>
26#include <linux/nfs4_mount.h>
27#include <linux/lockd/bind.h> 26#include <linux/lockd/bind.h>
28#include <linux/seq_file.h> 27#include <linux/seq_file.h>
29#include <linux/mount.h> 28#include <linux/mount.h>
30#include <linux/nfs_idmap.h>
31#include <linux/vfs.h> 29#include <linux/vfs.h>
32#include <linux/namei.h> 30#include <linux/namei.h>
33#include <linux/security.h> 31#include <linux/security.h>
34 32
35#include <asm/uaccess.h> 33#include <asm/uaccess.h>
36 34
37#include "nfs4_fs.h"
38#include "delegation.h"
39#include "internal.h"
40
41#define NFSDBG_FACILITY NFSDBG_CLIENT 35#define NFSDBG_FACILITY NFSDBG_CLIENT
42 36
43/* 37/*
@@ -135,47 +129,3 @@ out:
135 nfs_free_fattr(fsinfo.fattr); 129 nfs_free_fattr(fsinfo.fattr);
136 return ret; 130 return ret;
137} 131}
138
139#ifdef CONFIG_NFS_V4
140
141int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh)
142{
143 struct nfs_fsinfo fsinfo;
144 int ret = -ENOMEM;
145
146 dprintk("--> nfs4_get_rootfh()\n");
147
148 fsinfo.fattr = nfs_alloc_fattr();
149 if (fsinfo.fattr == NULL)
150 goto out;
151
152 /* Start by getting the root filehandle from the server */
153 ret = nfs4_proc_get_rootfh(server, mntfh, &fsinfo);
154 if (ret < 0) {
155 dprintk("nfs4_get_rootfh: getroot error = %d\n", -ret);
156 goto out;
157 }
158
159 if (!(fsinfo.fattr->valid & NFS_ATTR_FATTR_TYPE)
160 || !S_ISDIR(fsinfo.fattr->mode)) {
161 printk(KERN_ERR "nfs4_get_rootfh:"
162 " getroot encountered non-directory\n");
163 ret = -ENOTDIR;
164 goto out;
165 }
166
167 if (fsinfo.fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) {
168 printk(KERN_ERR "nfs4_get_rootfh:"
169 " getroot obtained referral\n");
170 ret = -EREMOTE;
171 goto out;
172 }
173
174 memcpy(&server->fsid, &fsinfo.fattr->fsid, sizeof(server->fsid));
175out:
176 nfs_free_fattr(fsinfo.fattr);
177 dprintk("<-- nfs4_get_rootfh() = %d\n", ret);
178 return ret;
179}
180
181#endif /* CONFIG_NFS_V4 */
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index f7296983eba6..35f7e4bc680e 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -32,7 +32,6 @@
32#include <linux/lockd/bind.h> 32#include <linux/lockd/bind.h>
33#include <linux/seq_file.h> 33#include <linux/seq_file.h>
34#include <linux/mount.h> 34#include <linux/mount.h>
35#include <linux/nfs_idmap.h>
36#include <linux/vfs.h> 35#include <linux/vfs.h>
37#include <linux/inet.h> 36#include <linux/inet.h>
38#include <linux/nfs_xdr.h> 37#include <linux/nfs_xdr.h>
@@ -430,7 +429,7 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr)
430 * Return any delegations if we're going to change ACLs 429 * Return any delegations if we're going to change ACLs
431 */ 430 */
432 if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) 431 if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0)
433 nfs_inode_return_delegation(inode); 432 NFS_PROTO(inode)->return_delegation(inode);
434 error = NFS_PROTO(inode)->setattr(dentry, fattr, attr); 433 error = NFS_PROTO(inode)->setattr(dentry, fattr, attr);
435 if (error == 0) 434 if (error == 0)
436 nfs_refresh_inode(inode, fattr); 435 nfs_refresh_inode(inode, fattr);
@@ -1457,7 +1456,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
1457 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) 1456 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)
1458 || S_ISLNK(inode->i_mode))) 1457 || S_ISLNK(inode->i_mode)))
1459 invalid &= ~NFS_INO_INVALID_DATA; 1458 invalid &= ~NFS_INO_INVALID_DATA;
1460 if (!nfs_have_delegation(inode, FMODE_READ) || 1459 if (!NFS_PROTO(inode)->have_delegation(inode, FMODE_READ) ||
1461 (save_cache_validity & NFS_INO_REVAL_FORCED)) 1460 (save_cache_validity & NFS_INO_REVAL_FORCED))
1462 nfsi->cache_validity |= invalid; 1461 nfsi->cache_validity |= invalid;
1463 1462
@@ -1628,87 +1627,96 @@ static int __init init_nfs_fs(void)
1628{ 1627{
1629 int err; 1628 int err;
1630 1629
1631 err = nfs_idmap_init();
1632 if (err < 0)
1633 goto out10;
1634
1635 err = nfs_dns_resolver_init(); 1630 err = nfs_dns_resolver_init();
1636 if (err < 0) 1631 if (err < 0)
1637 goto out9; 1632 goto out11;
1638 1633
1639 err = register_pernet_subsys(&nfs_net_ops); 1634 err = register_pernet_subsys(&nfs_net_ops);
1640 if (err < 0) 1635 if (err < 0)
1641 goto out8; 1636 goto out10;
1642 1637
1643 err = nfs_fscache_register(); 1638 err = nfs_fscache_register();
1644 if (err < 0) 1639 if (err < 0)
1645 goto out7; 1640 goto out9;
1646 1641
1647 err = nfsiod_start(); 1642 err = nfsiod_start();
1648 if (err) 1643 if (err)
1649 goto out6; 1644 goto out8;
1650 1645
1651 err = nfs_fs_proc_init(); 1646 err = nfs_fs_proc_init();
1652 if (err) 1647 if (err)
1653 goto out5; 1648 goto out7;
1654 1649
1655 err = nfs_init_nfspagecache(); 1650 err = nfs_init_nfspagecache();
1656 if (err) 1651 if (err)
1657 goto out4; 1652 goto out6;
1658 1653
1659 err = nfs_init_inodecache(); 1654 err = nfs_init_inodecache();
1660 if (err) 1655 if (err)
1661 goto out3; 1656 goto out5;
1662 1657
1663 err = nfs_init_readpagecache(); 1658 err = nfs_init_readpagecache();
1664 if (err) 1659 if (err)
1665 goto out2; 1660 goto out4;
1666 1661
1667 err = nfs_init_writepagecache(); 1662 err = nfs_init_writepagecache();
1668 if (err) 1663 if (err)
1669 goto out1; 1664 goto out3;
1670 1665
1671 err = nfs_init_directcache(); 1666 err = nfs_init_directcache();
1672 if (err) 1667 if (err)
1673 goto out0; 1668 goto out2;
1674 1669
1675#ifdef CONFIG_PROC_FS 1670#ifdef CONFIG_PROC_FS
1676 rpc_proc_register(&init_net, &nfs_rpcstat); 1671 rpc_proc_register(&init_net, &nfs_rpcstat);
1677#endif 1672#endif
1673
1674#ifdef CONFIG_NFS_V4
1675 err = init_nfs_v4();
1676 if (err)
1677 goto out1;
1678#endif
1679
1678 if ((err = register_nfs_fs()) != 0) 1680 if ((err = register_nfs_fs()) != 0)
1679 goto out; 1681 goto out0;
1682
1680 return 0; 1683 return 0;
1681out: 1684out0:
1685#ifdef CONFIG_NFS_V4
1686 exit_nfs_v4();
1687out1:
1688#endif
1682#ifdef CONFIG_PROC_FS 1689#ifdef CONFIG_PROC_FS
1683 rpc_proc_unregister(&init_net, "nfs"); 1690 rpc_proc_unregister(&init_net, "nfs");
1684#endif 1691#endif
1685 nfs_destroy_directcache(); 1692 nfs_destroy_directcache();
1686out0:
1687 nfs_destroy_writepagecache();
1688out1:
1689 nfs_destroy_readpagecache();
1690out2: 1693out2:
1691 nfs_destroy_inodecache(); 1694 nfs_destroy_writepagecache();
1692out3: 1695out3:
1693 nfs_destroy_nfspagecache(); 1696 nfs_destroy_readpagecache();
1694out4: 1697out4:
1695 nfs_fs_proc_exit(); 1698 nfs_destroy_inodecache();
1696out5: 1699out5:
1697 nfsiod_stop(); 1700 nfs_destroy_nfspagecache();
1698out6: 1701out6:
1699 nfs_fscache_unregister(); 1702 nfs_fs_proc_exit();
1700out7: 1703out7:
1701 unregister_pernet_subsys(&nfs_net_ops); 1704 nfsiod_stop();
1702out8: 1705out8:
1703 nfs_dns_resolver_destroy(); 1706 nfs_fscache_unregister();
1704out9: 1707out9:
1705 nfs_idmap_quit(); 1708 unregister_pernet_subsys(&nfs_net_ops);
1706out10: 1709out10:
1710 nfs_dns_resolver_destroy();
1711out11:
1707 return err; 1712 return err;
1708} 1713}
1709 1714
1710static void __exit exit_nfs_fs(void) 1715static void __exit exit_nfs_fs(void)
1711{ 1716{
1717#ifdef CONFIG_NFS_V4
1718 exit_nfs_v4();
1719#endif
1712 nfs_destroy_directcache(); 1720 nfs_destroy_directcache();
1713 nfs_destroy_writepagecache(); 1721 nfs_destroy_writepagecache();
1714 nfs_destroy_readpagecache(); 1722 nfs_destroy_readpagecache();
@@ -1717,7 +1725,6 @@ static void __exit exit_nfs_fs(void)
1717 nfs_fscache_unregister(); 1725 nfs_fscache_unregister();
1718 unregister_pernet_subsys(&nfs_net_ops); 1726 unregister_pernet_subsys(&nfs_net_ops);
1719 nfs_dns_resolver_destroy(); 1727 nfs_dns_resolver_destroy();
1720 nfs_idmap_quit();
1721#ifdef CONFIG_PROC_FS 1728#ifdef CONFIG_PROC_FS
1722 rpc_proc_unregister(&init_net, "nfs"); 1729 rpc_proc_unregister(&init_net, "nfs");
1723#endif 1730#endif
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 18f99ef71343..cfafd13b6fe9 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -85,6 +85,17 @@ struct nfs_clone_mount {
85 */ 85 */
86#define NFS_MAX_READDIR_PAGES 8 86#define NFS_MAX_READDIR_PAGES 8
87 87
88struct nfs_client_initdata {
89 unsigned long init_flags;
90 const char *hostname;
91 const struct sockaddr *addr;
92 size_t addrlen;
93 const struct nfs_rpc_ops *rpc_ops;
94 int proto;
95 u32 minorversion;
96 struct net *net;
97};
98
88/* 99/*
89 * In-kernel mount arguments 100 * In-kernel mount arguments
90 */ 101 */
@@ -142,15 +153,36 @@ struct nfs_mount_request {
142 struct net *net; 153 struct net *net;
143}; 154};
144 155
156struct nfs_mount_info {
157 void (*fill_super)(struct super_block *, struct nfs_mount_info *);
158 int (*set_security)(struct super_block *, struct dentry *, struct nfs_mount_info *);
159 struct nfs_parsed_mount_data *parsed;
160 struct nfs_clone_mount *cloned;
161 struct nfs_fh *mntfh;
162};
163
145extern int nfs_mount(struct nfs_mount_request *info); 164extern int nfs_mount(struct nfs_mount_request *info);
146extern void nfs_umount(const struct nfs_mount_request *info); 165extern void nfs_umount(const struct nfs_mount_request *info);
147 166
148/* client.c */ 167/* client.c */
149extern const struct rpc_program nfs_program; 168extern const struct rpc_program nfs_program;
150extern void nfs_clients_init(struct net *net); 169extern void nfs_clients_init(struct net *net);
170extern struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *);
171int nfs_create_rpc_client(struct nfs_client *, const struct rpc_timeout *, rpc_authflavor_t);
172struct nfs_client *nfs_get_client(const struct nfs_client_initdata *,
173 const struct rpc_timeout *, const char *,
174 rpc_authflavor_t);
175int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *, struct nfs_fattr *);
176void nfs_server_insert_lists(struct nfs_server *);
177void nfs_init_timeout_values(struct rpc_timeout *, int, unsigned int, unsigned int);
178int nfs_init_server_rpcclient(struct nfs_server *, const struct rpc_timeout *t,
179 rpc_authflavor_t);
180struct nfs_server *nfs_alloc_server(void);
181void nfs_server_copy_userdata(struct nfs_server *, struct nfs_server *);
151 182
152extern void nfs_cleanup_cb_ident_idr(struct net *); 183extern void nfs_cleanup_cb_ident_idr(struct net *);
153extern void nfs_put_client(struct nfs_client *); 184extern void nfs_put_client(struct nfs_client *);
185extern void nfs_free_client(struct nfs_client *);
154extern struct nfs_client *nfs4_find_client_ident(struct net *, int); 186extern struct nfs_client *nfs4_find_client_ident(struct net *, int);
155extern struct nfs_client * 187extern struct nfs_client *
156nfs4_find_client_sessionid(struct net *, const struct sockaddr *, 188nfs4_find_client_sessionid(struct net *, const struct sockaddr *,
@@ -188,6 +220,10 @@ static inline void nfs_fs_proc_exit(void)
188} 220}
189#endif 221#endif
190 222
223#ifdef CONFIG_NFS_V4_1
224int nfs_sockaddr_match_ipaddr(const struct sockaddr *, const struct sockaddr *);
225#endif
226
191/* callback_xdr.c */ 227/* callback_xdr.c */
192extern struct svc_version nfs4_callback_version1; 228extern struct svc_version nfs4_callback_version1;
193extern struct svc_version nfs4_callback_version4; 229extern struct svc_version nfs4_callback_version4;
@@ -245,6 +281,32 @@ extern struct nfs_client *nfs_init_client(struct nfs_client *clp,
245/* dir.c */ 281/* dir.c */
246extern int nfs_access_cache_shrinker(struct shrinker *shrink, 282extern int nfs_access_cache_shrinker(struct shrinker *shrink,
247 struct shrink_control *sc); 283 struct shrink_control *sc);
284struct dentry *nfs_lookup(struct inode *, struct dentry *, unsigned int);
285int nfs_create(struct inode *, struct dentry *, umode_t, bool);
286int nfs_mkdir(struct inode *, struct dentry *, umode_t);
287int nfs_rmdir(struct inode *, struct dentry *);
288int nfs_unlink(struct inode *, struct dentry *);
289int nfs_symlink(struct inode *, struct dentry *, const char *);
290int nfs_link(struct dentry *, struct inode *, struct dentry *);
291int nfs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
292int nfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *);
293
294/* file.c */
295int nfs_file_fsync_commit(struct file *, loff_t, loff_t, int);
296loff_t nfs_file_llseek(struct file *, loff_t, int);
297int nfs_file_flush(struct file *, fl_owner_t);
298ssize_t nfs_file_read(struct kiocb *, const struct iovec *, unsigned long, loff_t);
299ssize_t nfs_file_splice_read(struct file *, loff_t *, struct pipe_inode_info *,
300 size_t, unsigned int);
301int nfs_file_mmap(struct file *, struct vm_area_struct *);
302ssize_t nfs_file_write(struct kiocb *, const struct iovec *, unsigned long, loff_t);
303int nfs_file_release(struct inode *, struct file *);
304int nfs_lock(struct file *, int, struct file_lock *);
305int nfs_flock(struct file *, int, struct file_lock *);
306ssize_t nfs_file_splice_write(struct pipe_inode_info *, struct file *, loff_t *,
307 size_t, unsigned int);
308int nfs_check_flags(int);
309int nfs_setlease(struct file *, long, struct file_lock **);
248 310
249/* inode.c */ 311/* inode.c */
250extern struct workqueue_struct *nfsiod_workqueue; 312extern struct workqueue_struct *nfsiod_workqueue;
@@ -264,6 +326,16 @@ extern struct file_system_type nfs_xdev_fs_type;
264extern struct file_system_type nfs4_xdev_fs_type; 326extern struct file_system_type nfs4_xdev_fs_type;
265extern struct file_system_type nfs4_referral_fs_type; 327extern struct file_system_type nfs4_referral_fs_type;
266#endif 328#endif
329void nfs_initialise_sb(struct super_block *);
330int nfs_set_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
331int nfs_clone_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
332struct dentry *nfs_fs_mount_common(struct file_system_type *, struct nfs_server *,
333 int, const char *, struct nfs_mount_info *);
334struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *);
335struct dentry * nfs_xdev_mount_common(struct file_system_type *, int,
336 const char *, struct nfs_mount_info *);
337void nfs_kill_super(struct super_block *);
338void nfs_fill_super(struct super_block *, struct nfs_mount_info *);
267 339
268extern struct rpc_stat nfs_rpcstat; 340extern struct rpc_stat nfs_rpcstat;
269 341
@@ -304,12 +376,23 @@ extern int nfs_initiate_read(struct rpc_clnt *clnt,
304extern void nfs_read_prepare(struct rpc_task *task, void *calldata); 376extern void nfs_read_prepare(struct rpc_task *task, void *calldata);
305extern int nfs_generic_pagein(struct nfs_pageio_descriptor *desc, 377extern int nfs_generic_pagein(struct nfs_pageio_descriptor *desc,
306 struct nfs_pgio_header *hdr); 378 struct nfs_pgio_header *hdr);
307extern void nfs_pageio_init_read_mds(struct nfs_pageio_descriptor *pgio, 379extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
308 struct inode *inode, 380 struct inode *inode,
309 const struct nfs_pgio_completion_ops *compl_ops); 381 const struct nfs_pgio_completion_ops *compl_ops);
310extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio); 382extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio);
311extern void nfs_readdata_release(struct nfs_read_data *rdata); 383extern void nfs_readdata_release(struct nfs_read_data *rdata);
312 384
385/* super.c */
386void nfs_clone_super(struct super_block *, struct nfs_mount_info *);
387void nfs_umount_begin(struct super_block *);
388int nfs_statfs(struct dentry *, struct kstatfs *);
389int nfs_show_options(struct seq_file *, struct dentry *);
390int nfs_show_devname(struct seq_file *, struct dentry *);
391int nfs_show_path(struct seq_file *, struct dentry *);
392int nfs_show_stats(struct seq_file *, struct dentry *);
393void nfs_put_super(struct super_block *);
394int nfs_remount(struct super_block *sb, int *flags, char *raw_data);
395
313/* write.c */ 396/* write.c */
314extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, 397extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
315 struct inode *inode, int ioflags, 398 struct inode *inode, int ioflags,
@@ -318,7 +401,7 @@ extern struct nfs_write_header *nfs_writehdr_alloc(void);
318extern void nfs_writehdr_free(struct nfs_pgio_header *hdr); 401extern void nfs_writehdr_free(struct nfs_pgio_header *hdr);
319extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc, 402extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc,
320 struct nfs_pgio_header *hdr); 403 struct nfs_pgio_header *hdr);
321extern void nfs_pageio_init_write_mds(struct nfs_pageio_descriptor *pgio, 404extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
322 struct inode *inode, int ioflags, 405 struct inode *inode, int ioflags,
323 const struct nfs_pgio_completion_ops *compl_ops); 406 const struct nfs_pgio_completion_ops *compl_ops);
324extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio); 407extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio);
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index baf759bccd05..d04f0df7be55 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -106,19 +106,16 @@ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
106static int decode_nfsdata(struct xdr_stream *xdr, struct nfs_readres *result) 106static int decode_nfsdata(struct xdr_stream *xdr, struct nfs_readres *result)
107{ 107{
108 u32 recvd, count; 108 u32 recvd, count;
109 size_t hdrlen;
110 __be32 *p; 109 __be32 *p;
111 110
112 p = xdr_inline_decode(xdr, 4); 111 p = xdr_inline_decode(xdr, 4);
113 if (unlikely(p == NULL)) 112 if (unlikely(p == NULL))
114 goto out_overflow; 113 goto out_overflow;
115 count = be32_to_cpup(p); 114 count = be32_to_cpup(p);
116 hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; 115 recvd = xdr_read_pages(xdr, count);
117 recvd = xdr->buf->len - hdrlen;
118 if (unlikely(count > recvd)) 116 if (unlikely(count > recvd))
119 goto out_cheating; 117 goto out_cheating;
120out: 118out:
121 xdr_read_pages(xdr, count);
122 result->eof = 0; /* NFSv2 does not pass EOF flag on the wire. */ 119 result->eof = 0; /* NFSv2 does not pass EOF flag on the wire. */
123 result->count = count; 120 result->count = count;
124 return count; 121 return count;
@@ -440,7 +437,6 @@ static void encode_path(struct xdr_stream *xdr, struct page **pages, u32 length)
440static int decode_path(struct xdr_stream *xdr) 437static int decode_path(struct xdr_stream *xdr)
441{ 438{
442 u32 length, recvd; 439 u32 length, recvd;
443 size_t hdrlen;
444 __be32 *p; 440 __be32 *p;
445 441
446 p = xdr_inline_decode(xdr, 4); 442 p = xdr_inline_decode(xdr, 4);
@@ -449,12 +445,9 @@ static int decode_path(struct xdr_stream *xdr)
449 length = be32_to_cpup(p); 445 length = be32_to_cpup(p);
450 if (unlikely(length >= xdr->buf->page_len || length > NFS_MAXPATHLEN)) 446 if (unlikely(length >= xdr->buf->page_len || length > NFS_MAXPATHLEN))
451 goto out_size; 447 goto out_size;
452 hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; 448 recvd = xdr_read_pages(xdr, length);
453 recvd = xdr->buf->len - hdrlen;
454 if (unlikely(length > recvd)) 449 if (unlikely(length > recvd))
455 goto out_cheating; 450 goto out_cheating;
456
457 xdr_read_pages(xdr, length);
458 xdr_terminate_string(xdr->buf, length); 451 xdr_terminate_string(xdr->buf, length);
459 return 0; 452 return 0;
460out_size: 453out_size:
@@ -972,22 +965,7 @@ out_overflow:
972 */ 965 */
973static int decode_readdirok(struct xdr_stream *xdr) 966static int decode_readdirok(struct xdr_stream *xdr)
974{ 967{
975 u32 recvd, pglen; 968 return xdr_read_pages(xdr, xdr->buf->page_len);
976 size_t hdrlen;
977
978 pglen = xdr->buf->page_len;
979 hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
980 recvd = xdr->buf->len - hdrlen;
981 if (unlikely(pglen > recvd))
982 goto out_cheating;
983out:
984 xdr_read_pages(xdr, pglen);
985 return pglen;
986out_cheating:
987 dprintk("NFS: server cheating in readdir result: "
988 "pglen %u > recvd %u\n", pglen, recvd);
989 pglen = recvd;
990 goto out;
991} 969}
992 970
993static int nfs2_xdr_dec_readdirres(struct rpc_rqst *req, 971static int nfs2_xdr_dec_readdirres(struct rpc_rqst *req,
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index 3187e24e8f78..65d23eb92fe0 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -877,6 +877,46 @@ nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
877 return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl); 877 return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
878} 878}
879 879
880static int nfs3_have_delegation(struct inode *inode, fmode_t flags)
881{
882 return 0;
883}
884
885static int nfs3_return_delegation(struct inode *inode)
886{
887 nfs_wb_all(inode);
888 return 0;
889}
890
891static const struct inode_operations nfs3_dir_inode_operations = {
892 .create = nfs_create,
893 .lookup = nfs_lookup,
894 .link = nfs_link,
895 .unlink = nfs_unlink,
896 .symlink = nfs_symlink,
897 .mkdir = nfs_mkdir,
898 .rmdir = nfs_rmdir,
899 .mknod = nfs_mknod,
900 .rename = nfs_rename,
901 .permission = nfs_permission,
902 .getattr = nfs_getattr,
903 .setattr = nfs_setattr,
904 .listxattr = nfs3_listxattr,
905 .getxattr = nfs3_getxattr,
906 .setxattr = nfs3_setxattr,
907 .removexattr = nfs3_removexattr,
908};
909
910static const struct inode_operations nfs3_file_inode_operations = {
911 .permission = nfs_permission,
912 .getattr = nfs_getattr,
913 .setattr = nfs_setattr,
914 .listxattr = nfs3_listxattr,
915 .getxattr = nfs3_getxattr,
916 .setxattr = nfs3_setxattr,
917 .removexattr = nfs3_removexattr,
918};
919
880const struct nfs_rpc_ops nfs_v3_clientops = { 920const struct nfs_rpc_ops nfs_v3_clientops = {
881 .version = 3, /* protocol version */ 921 .version = 3, /* protocol version */
882 .dentry_ops = &nfs_dentry_operations, 922 .dentry_ops = &nfs_dentry_operations,
@@ -910,9 +950,11 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
910 .pathconf = nfs3_proc_pathconf, 950 .pathconf = nfs3_proc_pathconf,
911 .decode_dirent = nfs3_decode_dirent, 951 .decode_dirent = nfs3_decode_dirent,
912 .read_setup = nfs3_proc_read_setup, 952 .read_setup = nfs3_proc_read_setup,
953 .read_pageio_init = nfs_pageio_init_read,
913 .read_rpc_prepare = nfs3_proc_read_rpc_prepare, 954 .read_rpc_prepare = nfs3_proc_read_rpc_prepare,
914 .read_done = nfs3_read_done, 955 .read_done = nfs3_read_done,
915 .write_setup = nfs3_proc_write_setup, 956 .write_setup = nfs3_proc_write_setup,
957 .write_pageio_init = nfs_pageio_init_write,
916 .write_rpc_prepare = nfs3_proc_write_rpc_prepare, 958 .write_rpc_prepare = nfs3_proc_write_rpc_prepare,
917 .write_done = nfs3_write_done, 959 .write_done = nfs3_write_done,
918 .commit_setup = nfs3_proc_commit_setup, 960 .commit_setup = nfs3_proc_commit_setup,
@@ -921,5 +963,9 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
921 .lock = nfs3_proc_lock, 963 .lock = nfs3_proc_lock,
922 .clear_acl_cache = nfs3_forget_cached_acls, 964 .clear_acl_cache = nfs3_forget_cached_acls,
923 .close_context = nfs_close_context, 965 .close_context = nfs_close_context,
966 .have_delegation = nfs3_have_delegation,
967 .return_delegation = nfs3_return_delegation,
968 .alloc_client = nfs_alloc_client,
924 .init_client = nfs_init_client, 969 .init_client = nfs_init_client,
970 .free_client = nfs_free_client,
925}; 971};
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 902de489ec9b..6cbe89400dfc 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -246,7 +246,6 @@ static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages,
246static int decode_nfspath3(struct xdr_stream *xdr) 246static int decode_nfspath3(struct xdr_stream *xdr)
247{ 247{
248 u32 recvd, count; 248 u32 recvd, count;
249 size_t hdrlen;
250 __be32 *p; 249 __be32 *p;
251 250
252 p = xdr_inline_decode(xdr, 4); 251 p = xdr_inline_decode(xdr, 4);
@@ -255,12 +254,9 @@ static int decode_nfspath3(struct xdr_stream *xdr)
255 count = be32_to_cpup(p); 254 count = be32_to_cpup(p);
256 if (unlikely(count >= xdr->buf->page_len || count > NFS3_MAXPATHLEN)) 255 if (unlikely(count >= xdr->buf->page_len || count > NFS3_MAXPATHLEN))
257 goto out_nametoolong; 256 goto out_nametoolong;
258 hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; 257 recvd = xdr_read_pages(xdr, count);
259 recvd = xdr->buf->len - hdrlen;
260 if (unlikely(count > recvd)) 258 if (unlikely(count > recvd))
261 goto out_cheating; 259 goto out_cheating;
262
263 xdr_read_pages(xdr, count);
264 xdr_terminate_string(xdr->buf, count); 260 xdr_terminate_string(xdr->buf, count);
265 return 0; 261 return 0;
266 262
@@ -329,14 +325,14 @@ static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier)
329 memcpy(p, verifier, NFS3_CREATEVERFSIZE); 325 memcpy(p, verifier, NFS3_CREATEVERFSIZE);
330} 326}
331 327
332static int decode_writeverf3(struct xdr_stream *xdr, __be32 *verifier) 328static int decode_writeverf3(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
333{ 329{
334 __be32 *p; 330 __be32 *p;
335 331
336 p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE); 332 p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE);
337 if (unlikely(p == NULL)) 333 if (unlikely(p == NULL))
338 goto out_overflow; 334 goto out_overflow;
339 memcpy(verifier, p, NFS3_WRITEVERFSIZE); 335 memcpy(verifier->data, p, NFS3_WRITEVERFSIZE);
340 return 0; 336 return 0;
341out_overflow: 337out_overflow:
342 print_overflow_msg(__func__, xdr); 338 print_overflow_msg(__func__, xdr);
@@ -1587,7 +1583,6 @@ static int decode_read3resok(struct xdr_stream *xdr,
1587 struct nfs_readres *result) 1583 struct nfs_readres *result)
1588{ 1584{
1589 u32 eof, count, ocount, recvd; 1585 u32 eof, count, ocount, recvd;
1590 size_t hdrlen;
1591 __be32 *p; 1586 __be32 *p;
1592 1587
1593 p = xdr_inline_decode(xdr, 4 + 4 + 4); 1588 p = xdr_inline_decode(xdr, 4 + 4 + 4);
@@ -1598,13 +1593,10 @@ static int decode_read3resok(struct xdr_stream *xdr,
1598 ocount = be32_to_cpup(p++); 1593 ocount = be32_to_cpup(p++);
1599 if (unlikely(ocount != count)) 1594 if (unlikely(ocount != count))
1600 goto out_mismatch; 1595 goto out_mismatch;
1601 hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; 1596 recvd = xdr_read_pages(xdr, count);
1602 recvd = xdr->buf->len - hdrlen;
1603 if (unlikely(count > recvd)) 1597 if (unlikely(count > recvd))
1604 goto out_cheating; 1598 goto out_cheating;
1605
1606out: 1599out:
1607 xdr_read_pages(xdr, count);
1608 result->eof = eof; 1600 result->eof = eof;
1609 result->count = count; 1601 result->count = count;
1610 return count; 1602 return count;
@@ -1676,20 +1668,22 @@ static int decode_write3resok(struct xdr_stream *xdr,
1676{ 1668{
1677 __be32 *p; 1669 __be32 *p;
1678 1670
1679 p = xdr_inline_decode(xdr, 4 + 4 + NFS3_WRITEVERFSIZE); 1671 p = xdr_inline_decode(xdr, 4 + 4);
1680 if (unlikely(p == NULL)) 1672 if (unlikely(p == NULL))
1681 goto out_overflow; 1673 goto out_overflow;
1682 result->count = be32_to_cpup(p++); 1674 result->count = be32_to_cpup(p++);
1683 result->verf->committed = be32_to_cpup(p++); 1675 result->verf->committed = be32_to_cpup(p++);
1684 if (unlikely(result->verf->committed > NFS_FILE_SYNC)) 1676 if (unlikely(result->verf->committed > NFS_FILE_SYNC))
1685 goto out_badvalue; 1677 goto out_badvalue;
1686 memcpy(result->verf->verifier, p, NFS3_WRITEVERFSIZE); 1678 if (decode_writeverf3(xdr, &result->verf->verifier))
1679 goto out_eio;
1687 return result->count; 1680 return result->count;
1688out_badvalue: 1681out_badvalue:
1689 dprintk("NFS: bad stable_how value: %u\n", result->verf->committed); 1682 dprintk("NFS: bad stable_how value: %u\n", result->verf->committed);
1690 return -EIO; 1683 return -EIO;
1691out_overflow: 1684out_overflow:
1692 print_overflow_msg(__func__, xdr); 1685 print_overflow_msg(__func__, xdr);
1686out_eio:
1693 return -EIO; 1687 return -EIO;
1694} 1688}
1695 1689
@@ -2039,22 +2033,7 @@ out_truncated:
2039 */ 2033 */
2040static int decode_dirlist3(struct xdr_stream *xdr) 2034static int decode_dirlist3(struct xdr_stream *xdr)
2041{ 2035{
2042 u32 recvd, pglen; 2036 return xdr_read_pages(xdr, xdr->buf->page_len);
2043 size_t hdrlen;
2044
2045 pglen = xdr->buf->page_len;
2046 hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
2047 recvd = xdr->buf->len - hdrlen;
2048 if (unlikely(pglen > recvd))
2049 goto out_cheating;
2050out:
2051 xdr_read_pages(xdr, pglen);
2052 return pglen;
2053out_cheating:
2054 dprintk("NFS: server cheating in readdir result: "
2055 "pglen %u > recvd %u\n", pglen, recvd);
2056 pglen = recvd;
2057 goto out;
2058} 2037}
2059 2038
2060static int decode_readdir3resok(struct xdr_stream *xdr, 2039static int decode_readdir3resok(struct xdr_stream *xdr,
@@ -2337,7 +2316,7 @@ static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req,
2337 goto out; 2316 goto out;
2338 if (status != NFS3_OK) 2317 if (status != NFS3_OK)
2339 goto out_status; 2318 goto out_status;
2340 error = decode_writeverf3(xdr, result->verf->verifier); 2319 error = decode_writeverf3(xdr, &result->verf->verifier);
2341out: 2320out:
2342 return error; 2321 return error;
2343out_status: 2322out_status:
@@ -2364,7 +2343,7 @@ static inline int decode_getacl3resok(struct xdr_stream *xdr,
2364 if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) 2343 if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
2365 goto out; 2344 goto out;
2366 2345
2367 hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base; 2346 hdrlen = xdr_stream_pos(xdr);
2368 2347
2369 acl = NULL; 2348 acl = NULL;
2370 if (result->mask & NFS_ACL) 2349 if (result->mask & NFS_ACL)
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index cc5900ac61b5..5511690de8a5 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -200,7 +200,13 @@ struct nfs4_state_maintenance_ops {
200}; 200};
201 201
202extern const struct dentry_operations nfs4_dentry_operations; 202extern const struct dentry_operations nfs4_dentry_operations;
203extern const struct inode_operations nfs4_dir_inode_operations; 203
204/* dir.c */
205int nfs_atomic_open(struct inode *, struct dentry *, struct file *,
206 unsigned, umode_t, int *);
207
208/* write.c */
209int nfs4_write_inode(struct inode *, struct writeback_control *);
204 210
205/* nfs4namespace.c */ 211/* nfs4namespace.c */
206rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *); 212rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *);
@@ -301,6 +307,10 @@ extern const u32 nfs4_pathconf_bitmap[2];
301extern const u32 nfs4_fsinfo_bitmap[3]; 307extern const u32 nfs4_fsinfo_bitmap[3];
302extern const u32 nfs4_fs_locations_bitmap[2]; 308extern const u32 nfs4_fs_locations_bitmap[2];
303 309
310void nfs4_free_client(struct nfs_client *);
311
312struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *);
313
304/* nfs4renewd.c */ 314/* nfs4renewd.c */
305extern void nfs4_schedule_state_renewal(struct nfs_client *); 315extern void nfs4_schedule_state_renewal(struct nfs_client *);
306extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); 316extern void nfs4_renewd_prepare_shutdown(struct nfs_server *);
@@ -354,6 +364,27 @@ extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_sta
354 364
355extern const nfs4_stateid zero_stateid; 365extern const nfs4_stateid zero_stateid;
356 366
367/* nfs4super.c */
368struct nfs_mount_info;
369struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *);
370int init_nfs_v4(void);
371void exit_nfs_v4(void);
372
373/* nfs4sysctl.c */
374#ifdef CONFIG_SYSCTL
375int nfs4_register_sysctl(void);
376void nfs4_unregister_sysctl(void);
377#else
378static inline int nfs4_register_sysctl(void)
379{
380 return 0;
381}
382
383static inline void nfs4_unregister_sysctl(void)
384{
385}
386#endif
387
357/* nfs4xdr.c */ 388/* nfs4xdr.c */
358extern struct rpc_procinfo nfs4_procedures[]; 389extern struct rpc_procinfo nfs4_procedures[];
359 390
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
new file mode 100644
index 000000000000..1c3f13c8e472
--- /dev/null
+++ b/fs/nfs/nfs4client.c
@@ -0,0 +1,663 @@
1/*
2 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
3 * Written by David Howells (dhowells@redhat.com)
4 */
5#include <linux/module.h>
6#include <linux/nfs_fs.h>
7#include <linux/nfs_idmap.h>
8#include <linux/nfs_mount.h>
9#include <linux/sunrpc/auth.h>
10#include <linux/sunrpc/xprt.h>
11#include <linux/sunrpc/bc_xprt.h>
12#include "internal.h"
13#include "callback.h"
14#include "delegation.h"
15#include "pnfs.h"
16#include "netns.h"
17
18#define NFSDBG_FACILITY NFSDBG_CLIENT
19
20/*
21 * Turn off NFSv4 uid/gid mapping when using AUTH_SYS
22 */
23static bool nfs4_disable_idmapping = true;
24
25/*
26 * Get a unique NFSv4.0 callback identifier which will be used
27 * by the V4.0 callback service to lookup the nfs_client struct
28 */
29static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion)
30{
31 int ret = 0;
32 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
33
34 if (clp->rpc_ops->version != 4 || minorversion != 0)
35 return ret;
36retry:
37 if (!idr_pre_get(&nn->cb_ident_idr, GFP_KERNEL))
38 return -ENOMEM;
39 spin_lock(&nn->nfs_client_lock);
40 ret = idr_get_new(&nn->cb_ident_idr, clp, &clp->cl_cb_ident);
41 spin_unlock(&nn->nfs_client_lock);
42 if (ret == -EAGAIN)
43 goto retry;
44 return ret;
45}
46
47#ifdef CONFIG_NFS_V4_1
48static void nfs4_shutdown_session(struct nfs_client *clp)
49{
50 if (nfs4_has_session(clp)) {
51 nfs4_destroy_session(clp->cl_session);
52 nfs4_destroy_clientid(clp);
53 }
54
55}
56#else /* CONFIG_NFS_V4_1 */
57static void nfs4_shutdown_session(struct nfs_client *clp)
58{
59}
60#endif /* CONFIG_NFS_V4_1 */
61
62struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init)
63{
64 int err;
65 struct nfs_client *clp = nfs_alloc_client(cl_init);
66 if (IS_ERR(clp))
67 return clp;
68
69 err = nfs_get_cb_ident_idr(clp, cl_init->minorversion);
70 if (err)
71 goto error;
72
73 spin_lock_init(&clp->cl_lock);
74 INIT_DELAYED_WORK(&clp->cl_renewd, nfs4_renew_state);
75 rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS client");
76 clp->cl_state = 1 << NFS4CLNT_LEASE_EXPIRED;
77 clp->cl_minorversion = cl_init->minorversion;
78 clp->cl_mvops = nfs_v4_minor_ops[cl_init->minorversion];
79 return clp;
80
81error:
82 kfree(clp);
83 return ERR_PTR(err);
84}
85
86/*
87 * Destroy the NFS4 callback service
88 */
89static void nfs4_destroy_callback(struct nfs_client *clp)
90{
91 if (__test_and_clear_bit(NFS_CS_CALLBACK, &clp->cl_res_state))
92 nfs_callback_down(clp->cl_mvops->minor_version);
93}
94
95static void nfs4_shutdown_client(struct nfs_client *clp)
96{
97 if (__test_and_clear_bit(NFS_CS_RENEWD, &clp->cl_res_state))
98 nfs4_kill_renewd(clp);
99 nfs4_shutdown_session(clp);
100 nfs4_destroy_callback(clp);
101 if (__test_and_clear_bit(NFS_CS_IDMAP, &clp->cl_res_state))
102 nfs_idmap_delete(clp);
103
104 rpc_destroy_wait_queue(&clp->cl_rpcwaitq);
105 kfree(clp->cl_serverowner);
106 kfree(clp->cl_serverscope);
107 kfree(clp->cl_implid);
108}
109
110void nfs4_free_client(struct nfs_client *clp)
111{
112 nfs4_shutdown_client(clp);
113 nfs_free_client(clp);
114}
115
116/*
117 * Initialize the NFS4 callback service
118 */
119static int nfs4_init_callback(struct nfs_client *clp)
120{
121 int error;
122
123 if (clp->rpc_ops->version == 4) {
124 struct rpc_xprt *xprt;
125
126 xprt = rcu_dereference_raw(clp->cl_rpcclient->cl_xprt);
127
128 if (nfs4_has_session(clp)) {
129 error = xprt_setup_backchannel(xprt,
130 NFS41_BC_MIN_CALLBACKS);
131 if (error < 0)
132 return error;
133 }
134
135 error = nfs_callback_up(clp->cl_mvops->minor_version, xprt);
136 if (error < 0) {
137 dprintk("%s: failed to start callback. Error = %d\n",
138 __func__, error);
139 return error;
140 }
141 __set_bit(NFS_CS_CALLBACK, &clp->cl_res_state);
142 }
143 return 0;
144}
145
146/*
147 * Initialize the minor version specific parts of an NFS4 client record
148 */
149static int nfs4_init_client_minor_version(struct nfs_client *clp)
150{
151#if defined(CONFIG_NFS_V4_1)
152 if (clp->cl_mvops->minor_version) {
153 struct nfs4_session *session = NULL;
154 /*
155 * Create the session and mark it expired.
156 * When a SEQUENCE operation encounters the expired session
157 * it will do session recovery to initialize it.
158 */
159 session = nfs4_alloc_session(clp);
160 if (!session)
161 return -ENOMEM;
162
163 clp->cl_session = session;
164 /*
165 * The create session reply races with the server back
166 * channel probe. Mark the client NFS_CS_SESSION_INITING
167 * so that the client back channel can find the
168 * nfs_client struct
169 */
170 nfs_mark_client_ready(clp, NFS_CS_SESSION_INITING);
171 }
172#endif /* CONFIG_NFS_V4_1 */
173
174 return nfs4_init_callback(clp);
175}
176
177/**
178 * nfs4_init_client - Initialise an NFS4 client record
179 *
180 * @clp: nfs_client to initialise
181 * @timeparms: timeout parameters for underlying RPC transport
182 * @ip_addr: callback IP address in presentation format
183 * @authflavor: authentication flavor for underlying RPC transport
184 *
185 * Returns pointer to an NFS client, or an ERR_PTR value.
186 */
187struct nfs_client *nfs4_init_client(struct nfs_client *clp,
188 const struct rpc_timeout *timeparms,
189 const char *ip_addr,
190 rpc_authflavor_t authflavour)
191{
192 char buf[INET6_ADDRSTRLEN + 1];
193 int error;
194
195 if (clp->cl_cons_state == NFS_CS_READY) {
196 /* the client is initialised already */
197 dprintk("<-- nfs4_init_client() = 0 [already %p]\n", clp);
198 return clp;
199 }
200
201 /* Check NFS protocol revision and initialize RPC op vector */
202 clp->rpc_ops = &nfs_v4_clientops;
203
204 __set_bit(NFS_CS_DISCRTRY, &clp->cl_flags);
205 error = nfs_create_rpc_client(clp, timeparms, authflavour);
206 if (error < 0)
207 goto error;
208
209 /* If no clientaddr= option was specified, find a usable cb address */
210 if (ip_addr == NULL) {
211 struct sockaddr_storage cb_addr;
212 struct sockaddr *sap = (struct sockaddr *)&cb_addr;
213
214 error = rpc_localaddr(clp->cl_rpcclient, sap, sizeof(cb_addr));
215 if (error < 0)
216 goto error;
217 error = rpc_ntop(sap, buf, sizeof(buf));
218 if (error < 0)
219 goto error;
220 ip_addr = (const char *)buf;
221 }
222 strlcpy(clp->cl_ipaddr, ip_addr, sizeof(clp->cl_ipaddr));
223
224 error = nfs_idmap_new(clp);
225 if (error < 0) {
226 dprintk("%s: failed to create idmapper. Error = %d\n",
227 __func__, error);
228 goto error;
229 }
230 __set_bit(NFS_CS_IDMAP, &clp->cl_res_state);
231
232 error = nfs4_init_client_minor_version(clp);
233 if (error < 0)
234 goto error;
235
236 if (!nfs4_has_session(clp))
237 nfs_mark_client_ready(clp, NFS_CS_READY);
238 return clp;
239
240error:
241 nfs_mark_client_ready(clp, error);
242 nfs_put_client(clp);
243 dprintk("<-- nfs4_init_client() = xerror %d\n", error);
244 return ERR_PTR(error);
245}
246
247static void nfs4_destroy_server(struct nfs_server *server)
248{
249 nfs_server_return_all_delegations(server);
250 unset_pnfs_layoutdriver(server);
251 nfs4_purge_state_owners(server);
252}
253
254/*
255 * NFSv4.0 callback thread helper
256 *
257 * Find a client by callback identifier
258 */
259struct nfs_client *
260nfs4_find_client_ident(struct net *net, int cb_ident)
261{
262 struct nfs_client *clp;
263 struct nfs_net *nn = net_generic(net, nfs_net_id);
264
265 spin_lock(&nn->nfs_client_lock);
266 clp = idr_find(&nn->cb_ident_idr, cb_ident);
267 if (clp)
268 atomic_inc(&clp->cl_count);
269 spin_unlock(&nn->nfs_client_lock);
270 return clp;
271}
272
273#if defined(CONFIG_NFS_V4_1)
274/* Common match routine for v4.0 and v4.1 callback services */
275static bool nfs4_cb_match_client(const struct sockaddr *addr,
276 struct nfs_client *clp, u32 minorversion)
277{
278 struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr;
279
280 /* Don't match clients that failed to initialise */
281 if (!(clp->cl_cons_state == NFS_CS_READY ||
282 clp->cl_cons_state == NFS_CS_SESSION_INITING))
283 return false;
284
285 smp_rmb();
286
287 /* Match the version and minorversion */
288 if (clp->rpc_ops->version != 4 ||
289 clp->cl_minorversion != minorversion)
290 return false;
291
292 /* Match only the IP address, not the port number */
293 if (!nfs_sockaddr_match_ipaddr(addr, clap))
294 return false;
295
296 return true;
297}
298
299/*
300 * NFSv4.1 callback thread helper
301 * For CB_COMPOUND calls, find a client by IP address, protocol version,
302 * minorversion, and sessionID
303 *
304 * Returns NULL if no such client
305 */
306struct nfs_client *
307nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr,
308 struct nfs4_sessionid *sid)
309{
310 struct nfs_client *clp;
311 struct nfs_net *nn = net_generic(net, nfs_net_id);
312
313 spin_lock(&nn->nfs_client_lock);
314 list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) {
315 if (nfs4_cb_match_client(addr, clp, 1) == false)
316 continue;
317
318 if (!nfs4_has_session(clp))
319 continue;
320
321 /* Match sessionid*/
322 if (memcmp(clp->cl_session->sess_id.data,
323 sid->data, NFS4_MAX_SESSIONID_LEN) != 0)
324 continue;
325
326 atomic_inc(&clp->cl_count);
327 spin_unlock(&nn->nfs_client_lock);
328 return clp;
329 }
330 spin_unlock(&nn->nfs_client_lock);
331 return NULL;
332}
333
334#else /* CONFIG_NFS_V4_1 */
335
336struct nfs_client *
337nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr,
338 struct nfs4_sessionid *sid)
339{
340 return NULL;
341}
342#endif /* CONFIG_NFS_V4_1 */
343
344/*
345 * Set up an NFS4 client
346 */
347static int nfs4_set_client(struct nfs_server *server,
348 const char *hostname,
349 const struct sockaddr *addr,
350 const size_t addrlen,
351 const char *ip_addr,
352 rpc_authflavor_t authflavour,
353 int proto, const struct rpc_timeout *timeparms,
354 u32 minorversion, struct net *net)
355{
356 struct nfs_client_initdata cl_init = {
357 .hostname = hostname,
358 .addr = addr,
359 .addrlen = addrlen,
360 .rpc_ops = &nfs_v4_clientops,
361 .proto = proto,
362 .minorversion = minorversion,
363 .net = net,
364 };
365 struct nfs_client *clp;
366 int error;
367
368 dprintk("--> nfs4_set_client()\n");
369
370 if (server->flags & NFS_MOUNT_NORESVPORT)
371 set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
372
373 /* Allocate or find a client reference we can use */
374 clp = nfs_get_client(&cl_init, timeparms, ip_addr, authflavour);
375 if (IS_ERR(clp)) {
376 error = PTR_ERR(clp);
377 goto error;
378 }
379
380 /*
381 * Query for the lease time on clientid setup or renewal
382 *
383 * Note that this will be set on nfs_clients that were created
384 * only for the DS role and did not set this bit, but now will
385 * serve a dual role.
386 */
387 set_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state);
388
389 server->nfs_client = clp;
390 dprintk("<-- nfs4_set_client() = 0 [new %p]\n", clp);
391 return 0;
392error:
393 dprintk("<-- nfs4_set_client() = xerror %d\n", error);
394 return error;
395}
396
397/*
398 * Set up a pNFS Data Server client.
399 *
400 * Return any existing nfs_client that matches server address,port,version
401 * and minorversion.
402 *
403 * For a new nfs_client, use a soft mount (default), a low retrans and a
404 * low timeout interval so that if a connection is lost, we retry through
405 * the MDS.
406 */
407struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp,
408 const struct sockaddr *ds_addr, int ds_addrlen,
409 int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans)
410{
411 struct nfs_client_initdata cl_init = {
412 .addr = ds_addr,
413 .addrlen = ds_addrlen,
414 .rpc_ops = &nfs_v4_clientops,
415 .proto = ds_proto,
416 .minorversion = mds_clp->cl_minorversion,
417 .net = mds_clp->cl_net,
418 };
419 struct rpc_timeout ds_timeout;
420 struct nfs_client *clp;
421
422 /*
423 * Set an authflavor equual to the MDS value. Use the MDS nfs_client
424 * cl_ipaddr so as to use the same EXCHANGE_ID co_ownerid as the MDS
425 * (section 13.1 RFC 5661).
426 */
427 nfs_init_timeout_values(&ds_timeout, ds_proto, ds_timeo, ds_retrans);
428 clp = nfs_get_client(&cl_init, &ds_timeout, mds_clp->cl_ipaddr,
429 mds_clp->cl_rpcclient->cl_auth->au_flavor);
430
431 dprintk("<-- %s %p\n", __func__, clp);
432 return clp;
433}
434EXPORT_SYMBOL_GPL(nfs4_set_ds_client);
435
436/*
437 * Session has been established, and the client marked ready.
438 * Set the mount rsize and wsize with negotiated fore channel
439 * attributes which will be bound checked in nfs_server_set_fsinfo.
440 */
441static void nfs4_session_set_rwsize(struct nfs_server *server)
442{
443#ifdef CONFIG_NFS_V4_1
444 struct nfs4_session *sess;
445 u32 server_resp_sz;
446 u32 server_rqst_sz;
447
448 if (!nfs4_has_session(server->nfs_client))
449 return;
450 sess = server->nfs_client->cl_session;
451 server_resp_sz = sess->fc_attrs.max_resp_sz - nfs41_maxread_overhead;
452 server_rqst_sz = sess->fc_attrs.max_rqst_sz - nfs41_maxwrite_overhead;
453
454 if (server->rsize > server_resp_sz)
455 server->rsize = server_resp_sz;
456 if (server->wsize > server_rqst_sz)
457 server->wsize = server_rqst_sz;
458#endif /* CONFIG_NFS_V4_1 */
459}
460
461static int nfs4_server_common_setup(struct nfs_server *server,
462 struct nfs_fh *mntfh)
463{
464 struct nfs_fattr *fattr;
465 int error;
466
467 BUG_ON(!server->nfs_client);
468 BUG_ON(!server->nfs_client->rpc_ops);
469 BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops);
470
471 /* data servers support only a subset of NFSv4.1 */
472 if (is_ds_only_client(server->nfs_client))
473 return -EPROTONOSUPPORT;
474
475 fattr = nfs_alloc_fattr();
476 if (fattr == NULL)
477 return -ENOMEM;
478
479 /* We must ensure the session is initialised first */
480 error = nfs4_init_session(server);
481 if (error < 0)
482 goto out;
483
484 /* Probe the root fh to retrieve its FSID and filehandle */
485 error = nfs4_get_rootfh(server, mntfh);
486 if (error < 0)
487 goto out;
488
489 dprintk("Server FSID: %llx:%llx\n",
490 (unsigned long long) server->fsid.major,
491 (unsigned long long) server->fsid.minor);
492 dprintk("Mount FH: %d\n", mntfh->size);
493
494 nfs4_session_set_rwsize(server);
495
496 error = nfs_probe_fsinfo(server, mntfh, fattr);
497 if (error < 0)
498 goto out;
499
500 if (server->namelen == 0 || server->namelen > NFS4_MAXNAMLEN)
501 server->namelen = NFS4_MAXNAMLEN;
502
503 nfs_server_insert_lists(server);
504 server->mount_time = jiffies;
505 server->destroy = nfs4_destroy_server;
506out:
507 nfs_free_fattr(fattr);
508 return error;
509}
510
511/*
512 * Create a version 4 volume record
513 */
514static int nfs4_init_server(struct nfs_server *server,
515 const struct nfs_parsed_mount_data *data)
516{
517 struct rpc_timeout timeparms;
518 int error;
519
520 dprintk("--> nfs4_init_server()\n");
521
522 nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
523 data->timeo, data->retrans);
524
525 /* Initialise the client representation from the mount data */
526 server->flags = data->flags;
527 server->caps |= NFS_CAP_ATOMIC_OPEN|NFS_CAP_CHANGE_ATTR|NFS_CAP_POSIX_LOCK;
528 if (!(data->flags & NFS_MOUNT_NORDIRPLUS))
529 server->caps |= NFS_CAP_READDIRPLUS;
530 server->options = data->options;
531
532 /* Get a client record */
533 error = nfs4_set_client(server,
534 data->nfs_server.hostname,
535 (const struct sockaddr *)&data->nfs_server.address,
536 data->nfs_server.addrlen,
537 data->client_address,
538 data->auth_flavors[0],
539 data->nfs_server.protocol,
540 &timeparms,
541 data->minorversion,
542 data->net);
543 if (error < 0)
544 goto error;
545
546 /*
547 * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower
548 * authentication.
549 */
550 if (nfs4_disable_idmapping && data->auth_flavors[0] == RPC_AUTH_UNIX)
551 server->caps |= NFS_CAP_UIDGID_NOMAP;
552
553 if (data->rsize)
554 server->rsize = nfs_block_size(data->rsize, NULL);
555 if (data->wsize)
556 server->wsize = nfs_block_size(data->wsize, NULL);
557
558 server->acregmin = data->acregmin * HZ;
559 server->acregmax = data->acregmax * HZ;
560 server->acdirmin = data->acdirmin * HZ;
561 server->acdirmax = data->acdirmax * HZ;
562
563 server->port = data->nfs_server.port;
564
565 error = nfs_init_server_rpcclient(server, &timeparms, data->auth_flavors[0]);
566
567error:
568 /* Done */
569 dprintk("<-- nfs4_init_server() = %d\n", error);
570 return error;
571}
572
573/*
574 * Create a version 4 volume record
575 * - keyed on server and FSID
576 */
577struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
578 struct nfs_fh *mntfh)
579{
580 struct nfs_server *server;
581 int error;
582
583 dprintk("--> nfs4_create_server()\n");
584
585 server = nfs_alloc_server();
586 if (!server)
587 return ERR_PTR(-ENOMEM);
588
589 /* set up the general RPC client */
590 error = nfs4_init_server(server, data);
591 if (error < 0)
592 goto error;
593
594 error = nfs4_server_common_setup(server, mntfh);
595 if (error < 0)
596 goto error;
597
598 dprintk("<-- nfs4_create_server() = %p\n", server);
599 return server;
600
601error:
602 nfs_free_server(server);
603 dprintk("<-- nfs4_create_server() = error %d\n", error);
604 return ERR_PTR(error);
605}
606
607/*
608 * Create an NFS4 referral server record
609 */
610struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
611 struct nfs_fh *mntfh)
612{
613 struct nfs_client *parent_client;
614 struct nfs_server *server, *parent_server;
615 int error;
616
617 dprintk("--> nfs4_create_referral_server()\n");
618
619 server = nfs_alloc_server();
620 if (!server)
621 return ERR_PTR(-ENOMEM);
622
623 parent_server = NFS_SB(data->sb);
624 parent_client = parent_server->nfs_client;
625
626 /* Initialise the client representation from the parent server */
627 nfs_server_copy_userdata(server, parent_server);
628 server->caps |= NFS_CAP_ATOMIC_OPEN|NFS_CAP_CHANGE_ATTR;
629
630 /* Get a client representation.
631 * Note: NFSv4 always uses TCP, */
632 error = nfs4_set_client(server, data->hostname,
633 data->addr,
634 data->addrlen,
635 parent_client->cl_ipaddr,
636 data->authflavor,
637 rpc_protocol(parent_server->client),
638 parent_server->client->cl_timeout,
639 parent_client->cl_mvops->minor_version,
640 parent_client->cl_net);
641 if (error < 0)
642 goto error;
643
644 error = nfs_init_server_rpcclient(server, parent_server->client->cl_timeout, data->authflavor);
645 if (error < 0)
646 goto error;
647
648 error = nfs4_server_common_setup(server, mntfh);
649 if (error < 0)
650 goto error;
651
652 dprintk("<-- nfs_create_referral_server() = %p\n", server);
653 return server;
654
655error:
656 nfs_free_server(server);
657 dprintk("<-- nfs4_create_referral_server() = error %d\n", error);
658 return ERR_PTR(error);
659}
660
661module_param(nfs4_disable_idmapping, bool, 0644);
662MODULE_PARM_DESC(nfs4_disable_idmapping,
663 "Turn off NFSv4 idmapping when using 'sec=sys'");
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
new file mode 100644
index 000000000000..acb65e7887f8
--- /dev/null
+++ b/fs/nfs/nfs4file.c
@@ -0,0 +1,126 @@
1/*
2 * linux/fs/nfs/file.c
3 *
4 * Copyright (C) 1992 Rick Sladkey
5 */
6#include <linux/nfs_fs.h>
7#include "internal.h"
8#include "pnfs.h"
9
10#define NFSDBG_FACILITY NFSDBG_FILE
11
12static int
13nfs4_file_open(struct inode *inode, struct file *filp)
14{
15 struct nfs_open_context *ctx;
16 struct dentry *dentry = filp->f_path.dentry;
17 struct dentry *parent = NULL;
18 struct inode *dir;
19 unsigned openflags = filp->f_flags;
20 struct iattr attr;
21 int err;
22
23 BUG_ON(inode != dentry->d_inode);
24 /*
25 * If no cached dentry exists or if it's negative, NFSv4 handled the
26 * opens in ->lookup() or ->create().
27 *
28 * We only get this far for a cached positive dentry. We skipped
29 * revalidation, so handle it here by dropping the dentry and returning
30 * -EOPENSTALE. The VFS will retry the lookup/create/open.
31 */
32
33 dprintk("NFS: open file(%s/%s)\n",
34 dentry->d_parent->d_name.name,
35 dentry->d_name.name);
36
37 if ((openflags & O_ACCMODE) == 3)
38 openflags--;
39
40 /* We can't create new files here */
41 openflags &= ~(O_CREAT|O_EXCL);
42
43 parent = dget_parent(dentry);
44 dir = parent->d_inode;
45
46 ctx = alloc_nfs_open_context(filp->f_path.dentry, filp->f_mode);
47 err = PTR_ERR(ctx);
48 if (IS_ERR(ctx))
49 goto out;
50
51 attr.ia_valid = ATTR_OPEN;
52 if (openflags & O_TRUNC) {
53 attr.ia_valid |= ATTR_SIZE;
54 attr.ia_size = 0;
55 nfs_wb_all(inode);
56 }
57
58 inode = NFS_PROTO(dir)->open_context(dir, ctx, openflags, &attr);
59 if (IS_ERR(inode)) {
60 err = PTR_ERR(inode);
61 switch (err) {
62 case -EPERM:
63 case -EACCES:
64 case -EDQUOT:
65 case -ENOSPC:
66 case -EROFS:
67 goto out_put_ctx;
68 default:
69 goto out_drop;
70 }
71 }
72 iput(inode);
73 if (inode != dentry->d_inode)
74 goto out_drop;
75
76 nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
77 nfs_file_set_open_context(filp, ctx);
78 err = 0;
79
80out_put_ctx:
81 put_nfs_open_context(ctx);
82out:
83 dput(parent);
84 return err;
85
86out_drop:
87 d_drop(dentry);
88 err = -EOPENSTALE;
89 goto out_put_ctx;
90}
91
92static int
93nfs4_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
94{
95 int ret;
96 struct inode *inode = file->f_path.dentry->d_inode;
97
98 ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
99 mutex_lock(&inode->i_mutex);
100 ret = nfs_file_fsync_commit(file, start, end, datasync);
101 if (!ret && !datasync)
102 /* application has asked for meta-data sync */
103 ret = pnfs_layoutcommit_inode(inode, true);
104 mutex_unlock(&inode->i_mutex);
105
106 return ret;
107}
108
109const struct file_operations nfs4_file_operations = {
110 .llseek = nfs_file_llseek,
111 .read = do_sync_read,
112 .write = do_sync_write,
113 .aio_read = nfs_file_read,
114 .aio_write = nfs_file_write,
115 .mmap = nfs_file_mmap,
116 .open = nfs4_file_open,
117 .flush = nfs_file_flush,
118 .release = nfs_file_release,
119 .fsync = nfs4_file_fsync,
120 .lock = nfs_lock,
121 .flock = nfs_flock,
122 .splice_read = nfs_file_splice_read,
123 .splice_write = nfs_file_splice_write,
124 .check_flags = nfs_check_flags,
125 .setlease = nfs_setlease,
126};
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index e1340293872c..53f94d915bd1 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -205,9 +205,9 @@ static int filelayout_async_handle_error(struct rpc_task *task,
205 case -EPIPE: 205 case -EPIPE:
206 dprintk("%s DS connection error %d\n", __func__, 206 dprintk("%s DS connection error %d\n", __func__,
207 task->tk_status); 207 task->tk_status);
208 if (!filelayout_test_devid_invalid(devid))
209 _pnfs_return_layout(inode);
210 filelayout_mark_devid_invalid(devid); 208 filelayout_mark_devid_invalid(devid);
209 clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags);
210 _pnfs_return_layout(inode);
211 rpc_wake_up(&tbl->slot_tbl_waitq); 211 rpc_wake_up(&tbl->slot_tbl_waitq);
212 nfs4_ds_disconnect(clp); 212 nfs4_ds_disconnect(clp);
213 /* fall through */ 213 /* fall through */
@@ -351,9 +351,9 @@ static void prepare_to_resend_writes(struct nfs_commit_data *data)
351 struct nfs_page *first = nfs_list_entry(data->pages.next); 351 struct nfs_page *first = nfs_list_entry(data->pages.next);
352 352
353 data->task.tk_status = 0; 353 data->task.tk_status = 0;
354 memcpy(data->verf.verifier, first->wb_verf.verifier, 354 memcpy(&data->verf.verifier, &first->wb_verf,
355 sizeof(first->wb_verf.verifier)); 355 sizeof(data->verf.verifier));
356 data->verf.verifier[0]++; /* ensure verifier mismatch */ 356 data->verf.verifier.data[0]++; /* ensure verifier mismatch */
357} 357}
358 358
359static int filelayout_commit_done_cb(struct rpc_task *task, 359static int filelayout_commit_done_cb(struct rpc_task *task,
diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c
index a1fab8da7f03..f81231f30d94 100644
--- a/fs/nfs/nfs4filelayoutdev.c
+++ b/fs/nfs/nfs4filelayoutdev.c
@@ -728,7 +728,7 @@ get_device_info(struct inode *inode, struct nfs4_deviceid *dev_id, gfp_t gfp_fla
728 pdev->layout_type = LAYOUT_NFSV4_1_FILES; 728 pdev->layout_type = LAYOUT_NFSV4_1_FILES;
729 pdev->pages = pages; 729 pdev->pages = pages;
730 pdev->pgbase = 0; 730 pdev->pgbase = 0;
731 pdev->pglen = PAGE_SIZE * max_pages; 731 pdev->pglen = max_resp_sz;
732 pdev->mincount = 0; 732 pdev->mincount = 0;
733 733
734 rc = nfs4_proc_getdeviceinfo(server, pdev); 734 rc = nfs4_proc_getdeviceinfo(server, pdev);
diff --git a/fs/nfs/nfs4getroot.c b/fs/nfs/nfs4getroot.c
new file mode 100644
index 000000000000..6a83780e0ce6
--- /dev/null
+++ b/fs/nfs/nfs4getroot.c
@@ -0,0 +1,49 @@
1/*
2* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
3* Written by David Howells (dhowells@redhat.com)
4*/
5
6#include <linux/nfs_fs.h>
7#include "nfs4_fs.h"
8
9#define NFSDBG_FACILITY NFSDBG_CLIENT
10
11int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh)
12{
13 struct nfs_fsinfo fsinfo;
14 int ret = -ENOMEM;
15
16 dprintk("--> nfs4_get_rootfh()\n");
17
18 fsinfo.fattr = nfs_alloc_fattr();
19 if (fsinfo.fattr == NULL)
20 goto out;
21
22 /* Start by getting the root filehandle from the server */
23 ret = nfs4_proc_get_rootfh(server, mntfh, &fsinfo);
24 if (ret < 0) {
25 dprintk("nfs4_get_rootfh: getroot error = %d\n", -ret);
26 goto out;
27 }
28
29 if (!(fsinfo.fattr->valid & NFS_ATTR_FATTR_TYPE)
30 || !S_ISDIR(fsinfo.fattr->mode)) {
31 printk(KERN_ERR "nfs4_get_rootfh:"
32 " getroot encountered non-directory\n");
33 ret = -ENOTDIR;
34 goto out;
35 }
36
37 if (fsinfo.fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) {
38 printk(KERN_ERR "nfs4_get_rootfh:"
39 " getroot obtained referral\n");
40 ret = -EREMOTE;
41 goto out;
42 }
43
44 memcpy(&server->fsid, &fsinfo.fattr->fsid, sizeof(server->fsid));
45out:
46 nfs_free_fattr(fsinfo.fattr);
47 dprintk("<-- nfs4_get_rootfh() = %d\n", ret);
48 return ret;
49}
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index c157b2089b47..6843e0a37de8 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -43,7 +43,6 @@
43#include <linux/printk.h> 43#include <linux/printk.h>
44#include <linux/slab.h> 44#include <linux/slab.h>
45#include <linux/sunrpc/clnt.h> 45#include <linux/sunrpc/clnt.h>
46#include <linux/sunrpc/gss_api.h>
47#include <linux/nfs.h> 46#include <linux/nfs.h>
48#include <linux/nfs4.h> 47#include <linux/nfs4.h>
49#include <linux/nfs_fs.h> 48#include <linux/nfs_fs.h>
@@ -259,7 +258,12 @@ static int nfs4_wait_clnt_recover(struct nfs_client *clp)
259 258
260 res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, 259 res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING,
261 nfs_wait_bit_killable, TASK_KILLABLE); 260 nfs_wait_bit_killable, TASK_KILLABLE);
262 return res; 261 if (res)
262 return res;
263
264 if (clp->cl_cons_state < 0)
265 return clp->cl_cons_state;
266 return 0;
263} 267}
264 268
265static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) 269static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
@@ -294,8 +298,8 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc
294 case 0: 298 case 0:
295 return 0; 299 return 0;
296 case -NFS4ERR_OPENMODE: 300 case -NFS4ERR_OPENMODE:
297 if (inode && nfs_have_delegation(inode, FMODE_READ)) { 301 if (inode && nfs4_have_delegation(inode, FMODE_READ)) {
298 nfs_inode_return_delegation(inode); 302 nfs4_inode_return_delegation(inode);
299 exception->retry = 1; 303 exception->retry = 1;
300 return 0; 304 return 0;
301 } 305 }
@@ -1065,7 +1069,7 @@ static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmo
1065 return; 1069 return;
1066 } 1070 }
1067 rcu_read_unlock(); 1071 rcu_read_unlock();
1068 nfs_inode_return_delegation(inode); 1072 nfs4_inode_return_delegation(inode);
1069} 1073}
1070 1074
1071static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) 1075static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
@@ -1756,33 +1760,70 @@ static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *sta
1756} 1760}
1757 1761
1758#if defined(CONFIG_NFS_V4_1) 1762#if defined(CONFIG_NFS_V4_1)
1759static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) 1763static void nfs41_clear_delegation_stateid(struct nfs4_state *state)
1760{ 1764{
1761 int status = NFS_OK;
1762 struct nfs_server *server = NFS_SERVER(state->inode); 1765 struct nfs_server *server = NFS_SERVER(state->inode);
1766 nfs4_stateid *stateid = &state->stateid;
1767 int status;
1768
1769 /* If a state reset has been done, test_stateid is unneeded */
1770 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1771 return;
1763 1772
1764 if (state->flags & flags) { 1773 status = nfs41_test_stateid(server, stateid);
1765 status = nfs41_test_stateid(server, stateid); 1774 if (status != NFS_OK) {
1766 if (status != NFS_OK) { 1775 /* Free the stateid unless the server explicitly
1776 * informs us the stateid is unrecognized. */
1777 if (status != -NFS4ERR_BAD_STATEID)
1767 nfs41_free_stateid(server, stateid); 1778 nfs41_free_stateid(server, stateid);
1768 state->flags &= ~flags; 1779
1769 } 1780 clear_bit(NFS_DELEGATED_STATE, &state->flags);
1781 }
1782}
1783
1784/**
1785 * nfs41_check_open_stateid - possibly free an open stateid
1786 *
1787 * @state: NFSv4 state for an inode
1788 *
1789 * Returns NFS_OK if recovery for this stateid is now finished.
1790 * Otherwise a negative NFS4ERR value is returned.
1791 */
1792static int nfs41_check_open_stateid(struct nfs4_state *state)
1793{
1794 struct nfs_server *server = NFS_SERVER(state->inode);
1795 nfs4_stateid *stateid = &state->stateid;
1796 int status;
1797
1798 /* If a state reset has been done, test_stateid is unneeded */
1799 if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) &&
1800 (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) &&
1801 (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0))
1802 return -NFS4ERR_BAD_STATEID;
1803
1804 status = nfs41_test_stateid(server, stateid);
1805 if (status != NFS_OK) {
1806 /* Free the stateid unless the server explicitly
1807 * informs us the stateid is unrecognized. */
1808 if (status != -NFS4ERR_BAD_STATEID)
1809 nfs41_free_stateid(server, stateid);
1810
1811 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1812 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1813 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1770 } 1814 }
1771 return status; 1815 return status;
1772} 1816}
1773 1817
1774static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) 1818static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
1775{ 1819{
1776 int deleg_status, open_status; 1820 int status;
1777 int deleg_flags = 1 << NFS_DELEGATED_STATE;
1778 int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE);
1779
1780 deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags);
1781 open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags);
1782 1821
1783 if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) 1822 nfs41_clear_delegation_stateid(state);
1784 return NFS_OK; 1823 status = nfs41_check_open_stateid(state);
1785 return nfs4_open_expired(sp, state); 1824 if (status != NFS_OK)
1825 status = nfs4_open_expired(sp, state);
1826 return status;
1786} 1827}
1787#endif 1828#endif
1788 1829
@@ -2375,11 +2416,15 @@ static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
2375 int i, len, status = 0; 2416 int i, len, status = 0;
2376 rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; 2417 rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS];
2377 2418
2378 len = gss_mech_list_pseudoflavors(&flav_array[0]); 2419 len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array));
2379 flav_array[len] = RPC_AUTH_NULL; 2420 BUG_ON(len < 0);
2380 len += 1;
2381 2421
2382 for (i = 0; i < len; i++) { 2422 for (i = 0; i < len; i++) {
2423 /* AUTH_UNIX is the default flavor if none was specified,
2424 * thus has already been tried. */
2425 if (flav_array[i] == RPC_AUTH_UNIX)
2426 continue;
2427
2383 status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); 2428 status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]);
2384 if (status == -NFS4ERR_WRONGSEC || status == -EACCES) 2429 if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
2385 continue; 2430 continue;
@@ -2766,9 +2811,7 @@ static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2766 * 2811 *
2767 * In the case of WRITE, we also want to put the GETATTR after 2812 * In the case of WRITE, we also want to put the GETATTR after
2768 * the operation -- in this case because we want to make sure 2813 * the operation -- in this case because we want to make sure
2769 * we get the post-operation mtime and size. This means that 2814 * we get the post-operation mtime and size.
2770 * we can't use xdr_encode_pages() as written: we need a variant
2771 * of it which would leave room in the 'tail' iovec.
2772 * 2815 *
2773 * Both of these changes to the XDR layer would in fact be quite 2816 * Both of these changes to the XDR layer would in fact be quite
2774 * minor, but I decided to leave them for a subsequent patch. 2817 * minor, but I decided to leave them for a subsequent patch.
@@ -2821,7 +2864,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
2821 return PTR_ERR(ctx); 2864 return PTR_ERR(ctx);
2822 2865
2823 sattr->ia_mode &= ~current_umask(); 2866 sattr->ia_mode &= ~current_umask();
2824 state = nfs4_do_open(dir, dentry, ctx->mode, flags, sattr, ctx->cred, NULL); 2867 state = nfs4_do_open(dir, dentry, ctx->mode,
2868 flags, sattr, ctx->cred,
2869 &ctx->mdsthreshold);
2825 d_drop(dentry); 2870 d_drop(dentry);
2826 if (IS_ERR(state)) { 2871 if (IS_ERR(state)) {
2827 status = PTR_ERR(state); 2872 status = PTR_ERR(state);
@@ -3315,8 +3360,14 @@ static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, str
3315 3360
3316static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) 3361static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3317{ 3362{
3363 int error;
3364
3318 nfs_fattr_init(fsinfo->fattr); 3365 nfs_fattr_init(fsinfo->fattr);
3319 return nfs4_do_fsinfo(server, fhandle, fsinfo); 3366 error = nfs4_do_fsinfo(server, fhandle, fsinfo);
3367 if (error == 0)
3368 set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype);
3369
3370 return error;
3320} 3371}
3321 3372
3322static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, 3373static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
@@ -3443,7 +3494,7 @@ bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data)
3443 /* Otherwise, request attributes if and only if we don't hold 3494 /* Otherwise, request attributes if and only if we don't hold
3444 * a delegation 3495 * a delegation
3445 */ 3496 */
3446 return nfs_have_delegation(hdr->inode, FMODE_READ) == 0; 3497 return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0;
3447} 3498}
3448 3499
3449static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) 3500static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
@@ -3732,7 +3783,8 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu
3732 .rpc_argp = &args, 3783 .rpc_argp = &args,
3733 .rpc_resp = &res, 3784 .rpc_resp = &res,
3734 }; 3785 };
3735 int ret = -ENOMEM, npages, i, acl_len = 0; 3786 int ret = -ENOMEM, npages, i;
3787 size_t acl_len = 0;
3736 3788
3737 npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; 3789 npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT;
3738 /* As long as we're doing a round trip to the server anyway, 3790 /* As long as we're doing a round trip to the server anyway,
@@ -3847,7 +3899,7 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl
3847 i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); 3899 i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
3848 if (i < 0) 3900 if (i < 0)
3849 return i; 3901 return i;
3850 nfs_inode_return_delegation(inode); 3902 nfs4_inode_return_delegation(inode);
3851 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); 3903 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
3852 3904
3853 /* 3905 /*
@@ -3961,6 +4013,16 @@ static void nfs4_init_boot_verifier(const struct nfs_client *clp,
3961 memcpy(bootverf->data, verf, sizeof(bootverf->data)); 4013 memcpy(bootverf->data, verf, sizeof(bootverf->data));
3962} 4014}
3963 4015
4016/**
4017 * nfs4_proc_setclientid - Negotiate client ID
4018 * @clp: state data structure
4019 * @program: RPC program for NFSv4 callback service
4020 * @port: IP port number for NFS4 callback service
4021 * @cred: RPC credential to use for this call
4022 * @res: where to place the result
4023 *
4024 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4025 */
3964int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, 4026int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
3965 unsigned short port, struct rpc_cred *cred, 4027 unsigned short port, struct rpc_cred *cred,
3966 struct nfs4_setclientid_res *res) 4028 struct nfs4_setclientid_res *res)
@@ -3977,44 +4039,44 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
3977 .rpc_resp = res, 4039 .rpc_resp = res,
3978 .rpc_cred = cred, 4040 .rpc_cred = cred,
3979 }; 4041 };
3980 int loop = 0;
3981 int status; 4042 int status;
3982 4043
4044 /* nfs_client_id4 */
3983 nfs4_init_boot_verifier(clp, &sc_verifier); 4045 nfs4_init_boot_verifier(clp, &sc_verifier);
3984 4046 rcu_read_lock();
3985 for(;;) { 4047 setclientid.sc_name_len = scnprintf(setclientid.sc_name,
3986 rcu_read_lock(); 4048 sizeof(setclientid.sc_name), "%s/%s %s",
3987 setclientid.sc_name_len = scnprintf(setclientid.sc_name, 4049 clp->cl_ipaddr,
3988 sizeof(setclientid.sc_name), "%s/%s %s %s %u", 4050 rpc_peeraddr2str(clp->cl_rpcclient,
3989 clp->cl_ipaddr, 4051 RPC_DISPLAY_ADDR),
3990 rpc_peeraddr2str(clp->cl_rpcclient, 4052 rpc_peeraddr2str(clp->cl_rpcclient,
3991 RPC_DISPLAY_ADDR), 4053 RPC_DISPLAY_PROTO));
3992 rpc_peeraddr2str(clp->cl_rpcclient, 4054 /* cb_client4 */
3993 RPC_DISPLAY_PROTO), 4055 setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
3994 clp->cl_rpcclient->cl_auth->au_ops->au_name,
3995 clp->cl_id_uniquifier);
3996 setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
3997 sizeof(setclientid.sc_netid), 4056 sizeof(setclientid.sc_netid),
3998 rpc_peeraddr2str(clp->cl_rpcclient, 4057 rpc_peeraddr2str(clp->cl_rpcclient,
3999 RPC_DISPLAY_NETID)); 4058 RPC_DISPLAY_NETID));
4000 setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, 4059 rcu_read_unlock();
4060 setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
4001 sizeof(setclientid.sc_uaddr), "%s.%u.%u", 4061 sizeof(setclientid.sc_uaddr), "%s.%u.%u",
4002 clp->cl_ipaddr, port >> 8, port & 255); 4062 clp->cl_ipaddr, port >> 8, port & 255);
4003 rcu_read_unlock();
4004 4063
4005 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); 4064 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4006 if (status != -NFS4ERR_CLID_INUSE) 4065 clp->cl_rpcclient->cl_auth->au_ops->au_name,
4007 break; 4066 setclientid.sc_name_len, setclientid.sc_name);
4008 if (loop != 0) { 4067 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
4009 ++clp->cl_id_uniquifier; 4068 dprintk("NFS reply setclientid: %d\n", status);
4010 break;
4011 }
4012 ++loop;
4013 ssleep(clp->cl_lease_time / HZ + 1);
4014 }
4015 return status; 4069 return status;
4016} 4070}
4017 4071
4072/**
4073 * nfs4_proc_setclientid_confirm - Confirm client ID
4074 * @clp: state data structure
4075 * @res: result of a previous SETCLIENTID
4076 * @cred: RPC credential to use for this call
4077 *
4078 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4079 */
4018int nfs4_proc_setclientid_confirm(struct nfs_client *clp, 4080int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
4019 struct nfs4_setclientid_res *arg, 4081 struct nfs4_setclientid_res *arg,
4020 struct rpc_cred *cred) 4082 struct rpc_cred *cred)
@@ -4029,6 +4091,9 @@ int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
4029 unsigned long now; 4091 unsigned long now;
4030 int status; 4092 int status;
4031 4093
4094 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4095 clp->cl_rpcclient->cl_auth->au_ops->au_name,
4096 clp->cl_clientid);
4032 now = jiffies; 4097 now = jiffies;
4033 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); 4098 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
4034 if (status == 0) { 4099 if (status == 0) {
@@ -4037,6 +4102,7 @@ int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
4037 clp->cl_last_renewal = now; 4102 clp->cl_last_renewal = now;
4038 spin_unlock(&clp->cl_lock); 4103 spin_unlock(&clp->cl_lock);
4039 } 4104 }
4105 dprintk("NFS reply setclientid_confirm: %d\n", status);
4040 return status; 4106 return status;
4041} 4107}
4042 4108
@@ -4681,9 +4747,17 @@ out:
4681} 4747}
4682 4748
4683#if defined(CONFIG_NFS_V4_1) 4749#if defined(CONFIG_NFS_V4_1)
4750/**
4751 * nfs41_check_expired_locks - possibly free a lock stateid
4752 *
4753 * @state: NFSv4 state for an inode
4754 *
4755 * Returns NFS_OK if recovery for this stateid is now finished.
4756 * Otherwise a negative NFS4ERR value is returned.
4757 */
4684static int nfs41_check_expired_locks(struct nfs4_state *state) 4758static int nfs41_check_expired_locks(struct nfs4_state *state)
4685{ 4759{
4686 int status, ret = NFS_OK; 4760 int status, ret = -NFS4ERR_BAD_STATEID;
4687 struct nfs4_lock_state *lsp; 4761 struct nfs4_lock_state *lsp;
4688 struct nfs_server *server = NFS_SERVER(state->inode); 4762 struct nfs_server *server = NFS_SERVER(state->inode);
4689 4763
@@ -4691,7 +4765,11 @@ static int nfs41_check_expired_locks(struct nfs4_state *state)
4691 if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { 4765 if (lsp->ls_flags & NFS_LOCK_INITIALIZED) {
4692 status = nfs41_test_stateid(server, &lsp->ls_stateid); 4766 status = nfs41_test_stateid(server, &lsp->ls_stateid);
4693 if (status != NFS_OK) { 4767 if (status != NFS_OK) {
4694 nfs41_free_stateid(server, &lsp->ls_stateid); 4768 /* Free the stateid unless the server
4769 * informs us the stateid is unrecognized. */
4770 if (status != -NFS4ERR_BAD_STATEID)
4771 nfs41_free_stateid(server,
4772 &lsp->ls_stateid);
4695 lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; 4773 lsp->ls_flags &= ~NFS_LOCK_INITIALIZED;
4696 ret = status; 4774 ret = status;
4697 } 4775 }
@@ -4707,9 +4785,9 @@ static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *reques
4707 4785
4708 if (test_bit(LK_STATE_IN_USE, &state->flags)) 4786 if (test_bit(LK_STATE_IN_USE, &state->flags))
4709 status = nfs41_check_expired_locks(state); 4787 status = nfs41_check_expired_locks(state);
4710 if (status == NFS_OK) 4788 if (status != NFS_OK)
4711 return status; 4789 status = nfs4_lock_expired(state, request);
4712 return nfs4_lock_expired(state, request); 4790 return status;
4713} 4791}
4714#endif 4792#endif
4715 4793
@@ -4807,7 +4885,7 @@ nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
4807 * Don't rely on the VFS having checked the file open mode, 4885 * Don't rely on the VFS having checked the file open mode,
4808 * since it won't do this for flock() locks. 4886 * since it won't do this for flock() locks.
4809 */ 4887 */
4810 switch (request->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) { 4888 switch (request->fl_type) {
4811 case F_RDLCK: 4889 case F_RDLCK:
4812 if (!(filp->f_mode & FMODE_READ)) 4890 if (!(filp->f_mode & FMODE_READ))
4813 return -EBADF; 4891 return -EBADF;
@@ -5168,6 +5246,8 @@ out:
5168/* 5246/*
5169 * nfs4_proc_exchange_id() 5247 * nfs4_proc_exchange_id()
5170 * 5248 *
5249 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5250 *
5171 * Since the clientid has expired, all compounds using sessions 5251 * Since the clientid has expired, all compounds using sessions
5172 * associated with the stale clientid will be returning 5252 * associated with the stale clientid will be returning
5173 * NFS4ERR_BADSESSION in the sequence operation, and will therefore 5253 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
@@ -5192,16 +5272,14 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
5192 .rpc_cred = cred, 5272 .rpc_cred = cred,
5193 }; 5273 };
5194 5274
5195 dprintk("--> %s\n", __func__);
5196 BUG_ON(clp == NULL);
5197
5198 nfs4_init_boot_verifier(clp, &verifier); 5275 nfs4_init_boot_verifier(clp, &verifier);
5199
5200 args.id_len = scnprintf(args.id, sizeof(args.id), 5276 args.id_len = scnprintf(args.id, sizeof(args.id),
5201 "%s/%s/%u", 5277 "%s/%s",
5202 clp->cl_ipaddr, 5278 clp->cl_ipaddr,
5203 clp->cl_rpcclient->cl_nodename, 5279 clp->cl_rpcclient->cl_nodename);
5204 clp->cl_rpcclient->cl_auth->au_flavor); 5280 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5281 clp->cl_rpcclient->cl_auth->au_ops->au_name,
5282 args.id_len, args.id);
5205 5283
5206 res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), 5284 res.server_owner = kzalloc(sizeof(struct nfs41_server_owner),
5207 GFP_NOFS); 5285 GFP_NOFS);
@@ -5264,12 +5342,12 @@ out_server_scope:
5264 kfree(res.server_scope); 5342 kfree(res.server_scope);
5265out: 5343out:
5266 if (clp->cl_implid != NULL) 5344 if (clp->cl_implid != NULL)
5267 dprintk("%s: Server Implementation ID: " 5345 dprintk("NFS reply exchange_id: Server Implementation ID: "
5268 "domain: %s, name: %s, date: %llu,%u\n", 5346 "domain: %s, name: %s, date: %llu,%u\n",
5269 __func__, clp->cl_implid->domain, clp->cl_implid->name, 5347 clp->cl_implid->domain, clp->cl_implid->name,
5270 clp->cl_implid->date.seconds, 5348 clp->cl_implid->date.seconds,
5271 clp->cl_implid->date.nseconds); 5349 clp->cl_implid->date.nseconds);
5272 dprintk("<-- %s status= %d\n", __func__, status); 5350 dprintk("NFS reply exchange_id: %d\n", status);
5273 return status; 5351 return status;
5274} 5352}
5275 5353
@@ -6570,22 +6648,36 @@ static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid)
6570 .rpc_resp = &res, 6648 .rpc_resp = &res,
6571 }; 6649 };
6572 6650
6651 dprintk("NFS call test_stateid %p\n", stateid);
6573 nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); 6652 nfs41_init_sequence(&args.seq_args, &res.seq_res, 0);
6574 status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); 6653 status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
6575 6654 if (status != NFS_OK) {
6576 if (status == NFS_OK) 6655 dprintk("NFS reply test_stateid: failed, %d\n", status);
6577 return res.status; 6656 return status;
6578 return status; 6657 }
6658 dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status);
6659 return -res.status;
6579} 6660}
6580 6661
6662/**
6663 * nfs41_test_stateid - perform a TEST_STATEID operation
6664 *
6665 * @server: server / transport on which to perform the operation
6666 * @stateid: state ID to test
6667 *
6668 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6669 * Otherwise a negative NFS4ERR value is returned if the operation
6670 * failed or the state ID is not currently valid.
6671 */
6581static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) 6672static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid)
6582{ 6673{
6583 struct nfs4_exception exception = { }; 6674 struct nfs4_exception exception = { };
6584 int err; 6675 int err;
6585 do { 6676 do {
6586 err = nfs4_handle_exception(server, 6677 err = _nfs41_test_stateid(server, stateid);
6587 _nfs41_test_stateid(server, stateid), 6678 if (err != -NFS4ERR_DELAY)
6588 &exception); 6679 break;
6680 nfs4_handle_exception(server, err, &exception);
6589 } while (exception.retry); 6681 } while (exception.retry);
6590 return err; 6682 return err;
6591} 6683}
@@ -6601,19 +6693,34 @@ static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid)
6601 .rpc_argp = &args, 6693 .rpc_argp = &args,
6602 .rpc_resp = &res, 6694 .rpc_resp = &res,
6603 }; 6695 };
6696 int status;
6604 6697
6698 dprintk("NFS call free_stateid %p\n", stateid);
6605 nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); 6699 nfs41_init_sequence(&args.seq_args, &res.seq_res, 0);
6606 return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); 6700 status = nfs4_call_sync_sequence(server->client, server, &msg,
6701 &args.seq_args, &res.seq_res, 1);
6702 dprintk("NFS reply free_stateid: %d\n", status);
6703 return status;
6607} 6704}
6608 6705
6706/**
6707 * nfs41_free_stateid - perform a FREE_STATEID operation
6708 *
6709 * @server: server / transport on which to perform the operation
6710 * @stateid: state ID to release
6711 *
6712 * Returns NFS_OK if the server freed "stateid". Otherwise a
6713 * negative NFS4ERR value is returned.
6714 */
6609static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) 6715static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid)
6610{ 6716{
6611 struct nfs4_exception exception = { }; 6717 struct nfs4_exception exception = { };
6612 int err; 6718 int err;
6613 do { 6719 do {
6614 err = nfs4_handle_exception(server, 6720 err = _nfs4_free_stateid(server, stateid);
6615 _nfs4_free_stateid(server, stateid), 6721 if (err != -NFS4ERR_DELAY)
6616 &exception); 6722 break;
6723 nfs4_handle_exception(server, err, &exception);
6617 } while (exception.retry); 6724 } while (exception.retry);
6618 return err; 6725 return err;
6619} 6726}
@@ -6725,6 +6832,26 @@ const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
6725#endif 6832#endif
6726}; 6833};
6727 6834
6835const struct inode_operations nfs4_dir_inode_operations = {
6836 .create = nfs_create,
6837 .lookup = nfs_lookup,
6838 .atomic_open = nfs_atomic_open,
6839 .link = nfs_link,
6840 .unlink = nfs_unlink,
6841 .symlink = nfs_symlink,
6842 .mkdir = nfs_mkdir,
6843 .rmdir = nfs_rmdir,
6844 .mknod = nfs_mknod,
6845 .rename = nfs_rename,
6846 .permission = nfs_permission,
6847 .getattr = nfs_getattr,
6848 .setattr = nfs_setattr,
6849 .getxattr = generic_getxattr,
6850 .setxattr = generic_setxattr,
6851 .listxattr = generic_listxattr,
6852 .removexattr = generic_removexattr,
6853};
6854
6728static const struct inode_operations nfs4_file_inode_operations = { 6855static const struct inode_operations nfs4_file_inode_operations = {
6729 .permission = nfs_permission, 6856 .permission = nfs_permission,
6730 .getattr = nfs_getattr, 6857 .getattr = nfs_getattr,
@@ -6769,9 +6896,11 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
6769 .set_capabilities = nfs4_server_capabilities, 6896 .set_capabilities = nfs4_server_capabilities,
6770 .decode_dirent = nfs4_decode_dirent, 6897 .decode_dirent = nfs4_decode_dirent,
6771 .read_setup = nfs4_proc_read_setup, 6898 .read_setup = nfs4_proc_read_setup,
6899 .read_pageio_init = pnfs_pageio_init_read,
6772 .read_rpc_prepare = nfs4_proc_read_rpc_prepare, 6900 .read_rpc_prepare = nfs4_proc_read_rpc_prepare,
6773 .read_done = nfs4_read_done, 6901 .read_done = nfs4_read_done,
6774 .write_setup = nfs4_proc_write_setup, 6902 .write_setup = nfs4_proc_write_setup,
6903 .write_pageio_init = pnfs_pageio_init_write,
6775 .write_rpc_prepare = nfs4_proc_write_rpc_prepare, 6904 .write_rpc_prepare = nfs4_proc_write_rpc_prepare,
6776 .write_done = nfs4_write_done, 6905 .write_done = nfs4_write_done,
6777 .commit_setup = nfs4_proc_commit_setup, 6906 .commit_setup = nfs4_proc_commit_setup,
@@ -6781,7 +6910,11 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
6781 .clear_acl_cache = nfs4_zap_acl_attr, 6910 .clear_acl_cache = nfs4_zap_acl_attr,
6782 .close_context = nfs4_close_context, 6911 .close_context = nfs4_close_context,
6783 .open_context = nfs4_atomic_open, 6912 .open_context = nfs4_atomic_open,
6913 .have_delegation = nfs4_have_delegation,
6914 .return_delegation = nfs4_inode_return_delegation,
6915 .alloc_client = nfs4_alloc_client,
6784 .init_client = nfs4_init_client, 6916 .init_client = nfs4_init_client,
6917 .free_client = nfs4_free_client,
6785}; 6918};
6786 6919
6787static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { 6920static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index f38300e9f171..55148def5540 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1606,10 +1606,15 @@ static int nfs4_handle_reclaim_lease_error(struct nfs_client *clp, int status)
1606 return -ESERVERFAULT; 1606 return -ESERVERFAULT;
1607 /* Lease confirmation error: retry after purging the lease */ 1607 /* Lease confirmation error: retry after purging the lease */
1608 ssleep(1); 1608 ssleep(1);
1609 case -NFS4ERR_CLID_INUSE:
1610 case -NFS4ERR_STALE_CLIENTID: 1609 case -NFS4ERR_STALE_CLIENTID:
1611 clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state); 1610 clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state);
1612 break; 1611 break;
1612 case -NFS4ERR_CLID_INUSE:
1613 pr_err("NFS: Server %s reports our clientid is in use\n",
1614 clp->cl_hostname);
1615 nfs_mark_client_ready(clp, -EPERM);
1616 clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state);
1617 return -EPERM;
1613 case -EACCES: 1618 case -EACCES:
1614 if (clp->cl_machine_cred == NULL) 1619 if (clp->cl_machine_cred == NULL)
1615 return -EACCES; 1620 return -EACCES;
@@ -1642,7 +1647,7 @@ static int nfs4_handle_reclaim_lease_error(struct nfs_client *clp, int status)
1642 return 0; 1647 return 0;
1643} 1648}
1644 1649
1645static int nfs4_reclaim_lease(struct nfs_client *clp) 1650static int nfs4_establish_lease(struct nfs_client *clp)
1646{ 1651{
1647 struct rpc_cred *cred; 1652 struct rpc_cred *cred;
1648 const struct nfs4_state_recovery_ops *ops = 1653 const struct nfs4_state_recovery_ops *ops =
@@ -1655,7 +1660,41 @@ static int nfs4_reclaim_lease(struct nfs_client *clp)
1655 status = ops->establish_clid(clp, cred); 1660 status = ops->establish_clid(clp, cred);
1656 put_rpccred(cred); 1661 put_rpccred(cred);
1657 if (status != 0) 1662 if (status != 0)
1663 return status;
1664 pnfs_destroy_all_layouts(clp);
1665 return 0;
1666}
1667
1668/*
1669 * Returns zero or a negative errno. NFS4ERR values are converted
1670 * to local errno values.
1671 */
1672static int nfs4_reclaim_lease(struct nfs_client *clp)
1673{
1674 int status;
1675
1676 status = nfs4_establish_lease(clp);
1677 if (status < 0)
1678 return nfs4_handle_reclaim_lease_error(clp, status);
1679 if (test_and_clear_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state))
1680 nfs4_state_start_reclaim_nograce(clp);
1681 if (!test_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state))
1682 set_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state);
1683 clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state);
1684 clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
1685 return 0;
1686}
1687
1688static int nfs4_purge_lease(struct nfs_client *clp)
1689{
1690 int status;
1691
1692 status = nfs4_establish_lease(clp);
1693 if (status < 0)
1658 return nfs4_handle_reclaim_lease_error(clp, status); 1694 return nfs4_handle_reclaim_lease_error(clp, status);
1695 clear_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state);
1696 set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
1697 nfs4_state_start_reclaim_nograce(clp);
1659 return 0; 1698 return 0;
1660} 1699}
1661 1700
@@ -1764,6 +1803,8 @@ static int nfs4_reset_session(struct nfs_client *clp)
1764 struct rpc_cred *cred; 1803 struct rpc_cred *cred;
1765 int status; 1804 int status;
1766 1805
1806 if (!nfs4_has_session(clp))
1807 return 0;
1767 nfs4_begin_drain_session(clp); 1808 nfs4_begin_drain_session(clp);
1768 cred = nfs4_get_exchange_id_cred(clp); 1809 cred = nfs4_get_exchange_id_cred(clp);
1769 status = nfs4_proc_destroy_session(clp->cl_session, cred); 1810 status = nfs4_proc_destroy_session(clp->cl_session, cred);
@@ -1792,12 +1833,14 @@ out:
1792 1833
1793static int nfs4_recall_slot(struct nfs_client *clp) 1834static int nfs4_recall_slot(struct nfs_client *clp)
1794{ 1835{
1795 struct nfs4_slot_table *fc_tbl = &clp->cl_session->fc_slot_table; 1836 struct nfs4_slot_table *fc_tbl;
1796 struct nfs4_channel_attrs *fc_attrs = &clp->cl_session->fc_attrs;
1797 struct nfs4_slot *new, *old; 1837 struct nfs4_slot *new, *old;
1798 int i; 1838 int i;
1799 1839
1840 if (!nfs4_has_session(clp))
1841 return 0;
1800 nfs4_begin_drain_session(clp); 1842 nfs4_begin_drain_session(clp);
1843 fc_tbl = &clp->cl_session->fc_slot_table;
1801 new = kmalloc(fc_tbl->target_max_slots * sizeof(struct nfs4_slot), 1844 new = kmalloc(fc_tbl->target_max_slots * sizeof(struct nfs4_slot),
1802 GFP_NOFS); 1845 GFP_NOFS);
1803 if (!new) 1846 if (!new)
@@ -1810,11 +1853,10 @@ static int nfs4_recall_slot(struct nfs_client *clp)
1810 fc_tbl->slots = new; 1853 fc_tbl->slots = new;
1811 fc_tbl->max_slots = fc_tbl->target_max_slots; 1854 fc_tbl->max_slots = fc_tbl->target_max_slots;
1812 fc_tbl->target_max_slots = 0; 1855 fc_tbl->target_max_slots = 0;
1813 fc_attrs->max_reqs = fc_tbl->max_slots; 1856 clp->cl_session->fc_attrs.max_reqs = fc_tbl->max_slots;
1814 spin_unlock(&fc_tbl->slot_tbl_lock); 1857 spin_unlock(&fc_tbl->slot_tbl_lock);
1815 1858
1816 kfree(old); 1859 kfree(old);
1817 nfs4_end_drain_session(clp);
1818 return 0; 1860 return 0;
1819} 1861}
1820 1862
@@ -1823,6 +1865,8 @@ static int nfs4_bind_conn_to_session(struct nfs_client *clp)
1823 struct rpc_cred *cred; 1865 struct rpc_cred *cred;
1824 int ret; 1866 int ret;
1825 1867
1868 if (!nfs4_has_session(clp))
1869 return 0;
1826 nfs4_begin_drain_session(clp); 1870 nfs4_begin_drain_session(clp);
1827 cred = nfs4_get_exchange_id_cred(clp); 1871 cred = nfs4_get_exchange_id_cred(clp);
1828 ret = nfs4_proc_bind_conn_to_session(clp, cred); 1872 ret = nfs4_proc_bind_conn_to_session(clp, cred);
@@ -1857,37 +1901,29 @@ static int nfs4_bind_conn_to_session(struct nfs_client *clp)
1857static void nfs4_state_manager(struct nfs_client *clp) 1901static void nfs4_state_manager(struct nfs_client *clp)
1858{ 1902{
1859 int status = 0; 1903 int status = 0;
1904 const char *section = "", *section_sep = "";
1860 1905
1861 /* Ensure exclusive access to NFSv4 state */ 1906 /* Ensure exclusive access to NFSv4 state */
1862 do { 1907 do {
1863 if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { 1908 if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) {
1864 status = nfs4_reclaim_lease(clp); 1909 section = "purge state";
1910 status = nfs4_purge_lease(clp);
1865 if (status < 0) 1911 if (status < 0)
1866 goto out_error; 1912 goto out_error;
1867 clear_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state); 1913 continue;
1868 set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
1869 } 1914 }
1870 1915
1871 if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) { 1916 if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) {
1917 section = "lease expired";
1872 /* We're going to have to re-establish a clientid */ 1918 /* We're going to have to re-establish a clientid */
1873 status = nfs4_reclaim_lease(clp); 1919 status = nfs4_reclaim_lease(clp);
1874 if (status < 0) 1920 if (status < 0)
1875 goto out_error; 1921 goto out_error;
1876 if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) 1922 continue;
1877 continue;
1878 clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state);
1879
1880 if (test_and_clear_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH,
1881 &clp->cl_state))
1882 nfs4_state_start_reclaim_nograce(clp);
1883 else
1884 set_bit(NFS4CLNT_RECLAIM_REBOOT,
1885 &clp->cl_state);
1886
1887 pnfs_destroy_all_layouts(clp);
1888 } 1923 }
1889 1924
1890 if (test_and_clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state)) { 1925 if (test_and_clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state)) {
1926 section = "check lease";
1891 status = nfs4_check_lease(clp); 1927 status = nfs4_check_lease(clp);
1892 if (status < 0) 1928 if (status < 0)
1893 goto out_error; 1929 goto out_error;
@@ -1896,8 +1932,8 @@ static void nfs4_state_manager(struct nfs_client *clp)
1896 } 1932 }
1897 1933
1898 /* Initialize or reset the session */ 1934 /* Initialize or reset the session */
1899 if (test_and_clear_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state) 1935 if (test_and_clear_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)) {
1900 && nfs4_has_session(clp)) { 1936 section = "reset session";
1901 status = nfs4_reset_session(clp); 1937 status = nfs4_reset_session(clp);
1902 if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) 1938 if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
1903 continue; 1939 continue;
@@ -1907,15 +1943,26 @@ static void nfs4_state_manager(struct nfs_client *clp)
1907 1943
1908 /* Send BIND_CONN_TO_SESSION */ 1944 /* Send BIND_CONN_TO_SESSION */
1909 if (test_and_clear_bit(NFS4CLNT_BIND_CONN_TO_SESSION, 1945 if (test_and_clear_bit(NFS4CLNT_BIND_CONN_TO_SESSION,
1910 &clp->cl_state) && nfs4_has_session(clp)) { 1946 &clp->cl_state)) {
1947 section = "bind conn to session";
1911 status = nfs4_bind_conn_to_session(clp); 1948 status = nfs4_bind_conn_to_session(clp);
1912 if (status < 0) 1949 if (status < 0)
1913 goto out_error; 1950 goto out_error;
1914 continue; 1951 continue;
1915 } 1952 }
1916 1953
1954 /* Recall session slots */
1955 if (test_and_clear_bit(NFS4CLNT_RECALL_SLOT, &clp->cl_state)) {
1956 section = "recall slot";
1957 status = nfs4_recall_slot(clp);
1958 if (status < 0)
1959 goto out_error;
1960 continue;
1961 }
1962
1917 /* First recover reboot state... */ 1963 /* First recover reboot state... */
1918 if (test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state)) { 1964 if (test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state)) {
1965 section = "reclaim reboot";
1919 status = nfs4_do_reclaim(clp, 1966 status = nfs4_do_reclaim(clp,
1920 clp->cl_mvops->reboot_recovery_ops); 1967 clp->cl_mvops->reboot_recovery_ops);
1921 if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) || 1968 if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) ||
@@ -1930,6 +1977,7 @@ static void nfs4_state_manager(struct nfs_client *clp)
1930 1977
1931 /* Now recover expired state... */ 1978 /* Now recover expired state... */
1932 if (test_and_clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state)) { 1979 if (test_and_clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state)) {
1980 section = "reclaim nograce";
1933 status = nfs4_do_reclaim(clp, 1981 status = nfs4_do_reclaim(clp,
1934 clp->cl_mvops->nograce_recovery_ops); 1982 clp->cl_mvops->nograce_recovery_ops);
1935 if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) || 1983 if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) ||
@@ -1945,15 +1993,6 @@ static void nfs4_state_manager(struct nfs_client *clp)
1945 nfs_client_return_marked_delegations(clp); 1993 nfs_client_return_marked_delegations(clp);
1946 continue; 1994 continue;
1947 } 1995 }
1948 /* Recall session slots */
1949 if (test_and_clear_bit(NFS4CLNT_RECALL_SLOT, &clp->cl_state)
1950 && nfs4_has_session(clp)) {
1951 status = nfs4_recall_slot(clp);
1952 if (status < 0)
1953 goto out_error;
1954 continue;
1955 }
1956
1957 1996
1958 nfs4_clear_state_manager_bit(clp); 1997 nfs4_clear_state_manager_bit(clp);
1959 /* Did we race with an attempt to give us more work? */ 1998 /* Did we race with an attempt to give us more work? */
@@ -1964,8 +2003,11 @@ static void nfs4_state_manager(struct nfs_client *clp)
1964 } while (atomic_read(&clp->cl_count) > 1); 2003 } while (atomic_read(&clp->cl_count) > 1);
1965 return; 2004 return;
1966out_error: 2005out_error:
1967 pr_warn_ratelimited("NFS: state manager failed on NFSv4 server %s" 2006 if (strlen(section))
1968 " with error %d\n", clp->cl_hostname, -status); 2007 section_sep = ": ";
2008 pr_warn_ratelimited("NFS: state manager%s%s failed on NFSv4 server %s"
2009 " with error %d\n", section_sep, section,
2010 clp->cl_hostname, -status);
1969 nfs4_end_drain_session(clp); 2011 nfs4_end_drain_session(clp);
1970 nfs4_clear_state_manager_bit(clp); 2012 nfs4_clear_state_manager_bit(clp);
1971} 2013}
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
new file mode 100644
index 000000000000..59264fb335c8
--- /dev/null
+++ b/fs/nfs/nfs4super.c
@@ -0,0 +1,360 @@
1/*
2 * Copyright (c) 2012 Bryan Schumaker <bjschuma@netapp.com>
3 */
4#include <linux/init.h>
5#include <linux/module.h>
6#include <linux/nfs_idmap.h>
7#include <linux/nfs4_mount.h>
8#include <linux/nfs_fs.h>
9#include "internal.h"
10#include "nfs4_fs.h"
11
12#define NFSDBG_FACILITY NFSDBG_VFS
13
14static struct dentry *nfs4_remote_mount(struct file_system_type *fs_type,
15 int flags, const char *dev_name, void *raw_data);
16static struct dentry *nfs4_xdev_mount(struct file_system_type *fs_type,
17 int flags, const char *dev_name, void *raw_data);
18static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
19 int flags, const char *dev_name, void *raw_data);
20static struct dentry *nfs4_remote_referral_mount(struct file_system_type *fs_type,
21 int flags, const char *dev_name, void *raw_data);
22
23static struct file_system_type nfs4_fs_type = {
24 .owner = THIS_MODULE,
25 .name = "nfs4",
26 .mount = nfs_fs_mount,
27 .kill_sb = nfs_kill_super,
28 .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
29};
30
31static struct file_system_type nfs4_remote_fs_type = {
32 .owner = THIS_MODULE,
33 .name = "nfs4",
34 .mount = nfs4_remote_mount,
35 .kill_sb = nfs_kill_super,
36 .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
37};
38
39struct file_system_type nfs4_xdev_fs_type = {
40 .owner = THIS_MODULE,
41 .name = "nfs4",
42 .mount = nfs4_xdev_mount,
43 .kill_sb = nfs_kill_super,
44 .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
45};
46
47static struct file_system_type nfs4_remote_referral_fs_type = {
48 .owner = THIS_MODULE,
49 .name = "nfs4",
50 .mount = nfs4_remote_referral_mount,
51 .kill_sb = nfs_kill_super,
52 .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
53};
54
55struct file_system_type nfs4_referral_fs_type = {
56 .owner = THIS_MODULE,
57 .name = "nfs4",
58 .mount = nfs4_referral_mount,
59 .kill_sb = nfs_kill_super,
60 .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
61};
62
63static const struct super_operations nfs4_sops = {
64 .alloc_inode = nfs_alloc_inode,
65 .destroy_inode = nfs_destroy_inode,
66 .write_inode = nfs4_write_inode,
67 .put_super = nfs_put_super,
68 .statfs = nfs_statfs,
69 .evict_inode = nfs4_evict_inode,
70 .umount_begin = nfs_umount_begin,
71 .show_options = nfs_show_options,
72 .show_devname = nfs_show_devname,
73 .show_path = nfs_show_path,
74 .show_stats = nfs_show_stats,
75 .remount_fs = nfs_remount,
76};
77
78/*
79 * Set up an NFS4 superblock
80 */
81static void nfs4_fill_super(struct super_block *sb,
82 struct nfs_mount_info *mount_info)
83{
84 sb->s_time_gran = 1;
85 sb->s_op = &nfs4_sops;
86 /*
87 * The VFS shouldn't apply the umask to mode bits. We will do
88 * so ourselves when necessary.
89 */
90 sb->s_flags |= MS_POSIXACL;
91 sb->s_xattr = nfs4_xattr_handlers;
92 nfs_initialise_sb(sb);
93}
94
95/*
96 * Get the superblock for the NFS4 root partition
97 */
98static struct dentry *
99nfs4_remote_mount(struct file_system_type *fs_type, int flags,
100 const char *dev_name, void *info)
101{
102 struct nfs_mount_info *mount_info = info;
103 struct nfs_server *server;
104 struct dentry *mntroot = ERR_PTR(-ENOMEM);
105
106 mount_info->fill_super = nfs4_fill_super;
107 mount_info->set_security = nfs_set_sb_security;
108
109 /* Get a volume representation */
110 server = nfs4_create_server(mount_info->parsed, mount_info->mntfh);
111 if (IS_ERR(server)) {
112 mntroot = ERR_CAST(server);
113 goto out;
114 }
115
116 mntroot = nfs_fs_mount_common(fs_type, server, flags, dev_name, mount_info);
117
118out:
119 return mntroot;
120}
121
122static struct vfsmount *nfs_do_root_mount(struct file_system_type *fs_type,
123 int flags, void *data, const char *hostname)
124{
125 struct vfsmount *root_mnt;
126 char *root_devname;
127 size_t len;
128
129 len = strlen(hostname) + 5;
130 root_devname = kmalloc(len, GFP_KERNEL);
131 if (root_devname == NULL)
132 return ERR_PTR(-ENOMEM);
133 /* Does hostname needs to be enclosed in brackets? */
134 if (strchr(hostname, ':'))
135 snprintf(root_devname, len, "[%s]:/", hostname);
136 else
137 snprintf(root_devname, len, "%s:/", hostname);
138 root_mnt = vfs_kern_mount(fs_type, flags, root_devname, data);
139 kfree(root_devname);
140 return root_mnt;
141}
142
143struct nfs_referral_count {
144 struct list_head list;
145 const struct task_struct *task;
146 unsigned int referral_count;
147};
148
149static LIST_HEAD(nfs_referral_count_list);
150static DEFINE_SPINLOCK(nfs_referral_count_list_lock);
151
152static struct nfs_referral_count *nfs_find_referral_count(void)
153{
154 struct nfs_referral_count *p;
155
156 list_for_each_entry(p, &nfs_referral_count_list, list) {
157 if (p->task == current)
158 return p;
159 }
160 return NULL;
161}
162
163#define NFS_MAX_NESTED_REFERRALS 2
164
165static int nfs_referral_loop_protect(void)
166{
167 struct nfs_referral_count *p, *new;
168 int ret = -ENOMEM;
169
170 new = kmalloc(sizeof(*new), GFP_KERNEL);
171 if (!new)
172 goto out;
173 new->task = current;
174 new->referral_count = 1;
175
176 ret = 0;
177 spin_lock(&nfs_referral_count_list_lock);
178 p = nfs_find_referral_count();
179 if (p != NULL) {
180 if (p->referral_count >= NFS_MAX_NESTED_REFERRALS)
181 ret = -ELOOP;
182 else
183 p->referral_count++;
184 } else {
185 list_add(&new->list, &nfs_referral_count_list);
186 new = NULL;
187 }
188 spin_unlock(&nfs_referral_count_list_lock);
189 kfree(new);
190out:
191 return ret;
192}
193
194static void nfs_referral_loop_unprotect(void)
195{
196 struct nfs_referral_count *p;
197
198 spin_lock(&nfs_referral_count_list_lock);
199 p = nfs_find_referral_count();
200 p->referral_count--;
201 if (p->referral_count == 0)
202 list_del(&p->list);
203 else
204 p = NULL;
205 spin_unlock(&nfs_referral_count_list_lock);
206 kfree(p);
207}
208
209static struct dentry *nfs_follow_remote_path(struct vfsmount *root_mnt,
210 const char *export_path)
211{
212 struct dentry *dentry;
213 int err;
214
215 if (IS_ERR(root_mnt))
216 return ERR_CAST(root_mnt);
217
218 err = nfs_referral_loop_protect();
219 if (err) {
220 mntput(root_mnt);
221 return ERR_PTR(err);
222 }
223
224 dentry = mount_subtree(root_mnt, export_path);
225 nfs_referral_loop_unprotect();
226
227 return dentry;
228}
229
230struct dentry *nfs4_try_mount(int flags, const char *dev_name,
231 struct nfs_mount_info *mount_info)
232{
233 char *export_path;
234 struct vfsmount *root_mnt;
235 struct dentry *res;
236 struct nfs_parsed_mount_data *data = mount_info->parsed;
237
238 dfprintk(MOUNT, "--> nfs4_try_mount()\n");
239
240 mount_info->fill_super = nfs4_fill_super;
241
242 export_path = data->nfs_server.export_path;
243 data->nfs_server.export_path = "/";
244 root_mnt = nfs_do_root_mount(&nfs4_remote_fs_type, flags, mount_info,
245 data->nfs_server.hostname);
246 data->nfs_server.export_path = export_path;
247
248 res = nfs_follow_remote_path(root_mnt, export_path);
249
250 dfprintk(MOUNT, "<-- nfs4_try_mount() = %ld%s\n",
251 IS_ERR(res) ? PTR_ERR(res) : 0,
252 IS_ERR(res) ? " [error]" : "");
253 return res;
254}
255
256/*
257 * Clone an NFS4 server record on xdev traversal (FSID-change)
258 */
259static struct dentry *
260nfs4_xdev_mount(struct file_system_type *fs_type, int flags,
261 const char *dev_name, void *raw_data)
262{
263 struct nfs_mount_info mount_info = {
264 .fill_super = nfs_clone_super,
265 .set_security = nfs_clone_sb_security,
266 .cloned = raw_data,
267 };
268 return nfs_xdev_mount_common(&nfs4_fs_type, flags, dev_name, &mount_info);
269}
270
271static struct dentry *
272nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags,
273 const char *dev_name, void *raw_data)
274{
275 struct nfs_mount_info mount_info = {
276 .fill_super = nfs4_fill_super,
277 .set_security = nfs_clone_sb_security,
278 .cloned = raw_data,
279 };
280 struct nfs_server *server;
281 struct dentry *mntroot = ERR_PTR(-ENOMEM);
282
283 dprintk("--> nfs4_referral_get_sb()\n");
284
285 mount_info.mntfh = nfs_alloc_fhandle();
286 if (mount_info.cloned == NULL || mount_info.mntfh == NULL)
287 goto out;
288
289 /* create a new volume representation */
290 server = nfs4_create_referral_server(mount_info.cloned, mount_info.mntfh);
291 if (IS_ERR(server)) {
292 mntroot = ERR_CAST(server);
293 goto out;
294 }
295
296 mntroot = nfs_fs_mount_common(&nfs4_fs_type, server, flags, dev_name, &mount_info);
297out:
298 nfs_free_fhandle(mount_info.mntfh);
299 return mntroot;
300}
301
302/*
303 * Create an NFS4 server record on referral traversal
304 */
305static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
306 int flags, const char *dev_name, void *raw_data)
307{
308 struct nfs_clone_mount *data = raw_data;
309 char *export_path;
310 struct vfsmount *root_mnt;
311 struct dentry *res;
312
313 dprintk("--> nfs4_referral_mount()\n");
314
315 export_path = data->mnt_path;
316 data->mnt_path = "/";
317
318 root_mnt = nfs_do_root_mount(&nfs4_remote_referral_fs_type,
319 flags, data, data->hostname);
320 data->mnt_path = export_path;
321
322 res = nfs_follow_remote_path(root_mnt, export_path);
323 dprintk("<-- nfs4_referral_mount() = %ld%s\n",
324 IS_ERR(res) ? PTR_ERR(res) : 0,
325 IS_ERR(res) ? " [error]" : "");
326 return res;
327}
328
329
330int __init init_nfs_v4(void)
331{
332 int err;
333
334 err = nfs_idmap_init();
335 if (err)
336 goto out;
337
338 err = nfs4_register_sysctl();
339 if (err)
340 goto out1;
341
342 err = register_filesystem(&nfs4_fs_type);
343 if (err < 0)
344 goto out2;
345
346 return 0;
347out2:
348 nfs4_unregister_sysctl();
349out1:
350 nfs_idmap_quit();
351out:
352 return err;
353}
354
355void exit_nfs_v4(void)
356{
357 unregister_filesystem(&nfs4_fs_type);
358 nfs4_unregister_sysctl();
359 nfs_idmap_quit();
360}
diff --git a/fs/nfs/nfs4sysctl.c b/fs/nfs/nfs4sysctl.c
new file mode 100644
index 000000000000..5729bc8aa75d
--- /dev/null
+++ b/fs/nfs/nfs4sysctl.c
@@ -0,0 +1,68 @@
1/*
2 * linux/fs/nfs/nfs4sysctl.c
3 *
4 * Sysctl interface to NFS v4 parameters
5 *
6 * Copyright (c) 2006 Trond Myklebust <Trond.Myklebust@netapp.com>
7 */
8#include <linux/sysctl.h>
9#include <linux/nfs_idmap.h>
10#include <linux/nfs_fs.h>
11
12#include "callback.h"
13
14static const int nfs_set_port_min = 0;
15static const int nfs_set_port_max = 65535;
16static struct ctl_table_header *nfs4_callback_sysctl_table;
17
18static ctl_table nfs4_cb_sysctls[] = {
19 {
20 .procname = "nfs_callback_tcpport",
21 .data = &nfs_callback_set_tcpport,
22 .maxlen = sizeof(int),
23 .mode = 0644,
24 .proc_handler = proc_dointvec_minmax,
25 .extra1 = (int *)&nfs_set_port_min,
26 .extra2 = (int *)&nfs_set_port_max,
27 },
28 {
29 .procname = "idmap_cache_timeout",
30 .data = &nfs_idmap_cache_timeout,
31 .maxlen = sizeof(int),
32 .mode = 0644,
33 .proc_handler = proc_dointvec_jiffies,
34 },
35 { }
36};
37
38static ctl_table nfs4_cb_sysctl_dir[] = {
39 {
40 .procname = "nfs",
41 .mode = 0555,
42 .child = nfs4_cb_sysctls,
43 },
44 { }
45};
46
47static ctl_table nfs4_cb_sysctl_root[] = {
48 {
49 .procname = "fs",
50 .mode = 0555,
51 .child = nfs4_cb_sysctl_dir,
52 },
53 { }
54};
55
56int nfs4_register_sysctl(void)
57{
58 nfs4_callback_sysctl_table = register_sysctl_table(nfs4_cb_sysctl_root);
59 if (nfs4_callback_sysctl_table == NULL)
60 return -ENOMEM;
61 return 0;
62}
63
64void nfs4_unregister_sysctl(void)
65{
66 unregister_sysctl_table(nfs4_callback_sysctl_table);
67 nfs4_callback_sysctl_table = NULL;
68}
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 18fae29b0301..6cbd602e26d5 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1236,7 +1236,7 @@ static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct
1236 1236
1237static inline int nfs4_lock_type(struct file_lock *fl, int block) 1237static inline int nfs4_lock_type(struct file_lock *fl, int block)
1238{ 1238{
1239 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK) 1239 if (fl->fl_type == F_RDLCK)
1240 return block ? NFS4_READW_LT : NFS4_READ_LT; 1240 return block ? NFS4_READW_LT : NFS4_READ_LT;
1241 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; 1241 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1242} 1242}
@@ -3078,7 +3078,7 @@ out_overflow:
3078 return -EIO; 3078 return -EIO;
3079} 3079}
3080 3080
3081static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep) 3081static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
3082{ 3082{
3083 __be32 *p; 3083 __be32 *p;
3084 3084
@@ -3086,7 +3086,7 @@ static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen,
3086 if (unlikely(!p)) 3086 if (unlikely(!p))
3087 goto out_overflow; 3087 goto out_overflow;
3088 *attrlen = be32_to_cpup(p); 3088 *attrlen = be32_to_cpup(p);
3089 *savep = xdr->p; 3089 *savep = xdr_stream_pos(xdr);
3090 return 0; 3090 return 0;
3091out_overflow: 3091out_overflow:
3092 print_overflow_msg(__func__, xdr); 3092 print_overflow_msg(__func__, xdr);
@@ -4068,10 +4068,10 @@ static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, str
4068 return status; 4068 return status;
4069} 4069}
4070 4070
4071static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen) 4071static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
4072{ 4072{
4073 unsigned int attrwords = XDR_QUADLEN(attrlen); 4073 unsigned int attrwords = XDR_QUADLEN(attrlen);
4074 unsigned int nwords = xdr->p - savep; 4074 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
4075 4075
4076 if (unlikely(attrwords != nwords)) { 4076 if (unlikely(attrwords != nwords)) {
4077 dprintk("%s: server returned incorrect attribute length: " 4077 dprintk("%s: server returned incorrect attribute length: "
@@ -4158,13 +4158,18 @@ static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4158 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE); 4158 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
4159} 4159}
4160 4160
4161static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4162{
4163 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4164}
4165
4161static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res) 4166static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
4162{ 4167{
4163 int status; 4168 int status;
4164 4169
4165 status = decode_op_hdr(xdr, OP_COMMIT); 4170 status = decode_op_hdr(xdr, OP_COMMIT);
4166 if (!status) 4171 if (!status)
4167 status = decode_verifier(xdr, res->verf->verifier); 4172 status = decode_write_verifier(xdr, &res->verf->verifier);
4168 return status; 4173 return status;
4169} 4174}
4170 4175
@@ -4193,7 +4198,7 @@ out_overflow:
4193 4198
4194static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) 4199static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4195{ 4200{
4196 __be32 *savep; 4201 unsigned int savep;
4197 uint32_t attrlen, bitmap[3] = {0}; 4202 uint32_t attrlen, bitmap[3] = {0};
4198 int status; 4203 int status;
4199 4204
@@ -4222,7 +4227,7 @@ xdr_error:
4222 4227
4223static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) 4228static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4224{ 4229{
4225 __be32 *savep; 4230 unsigned int savep;
4226 uint32_t attrlen, bitmap[3] = {0}; 4231 uint32_t attrlen, bitmap[3] = {0};
4227 int status; 4232 int status;
4228 4233
@@ -4254,7 +4259,7 @@ xdr_error:
4254 4259
4255static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) 4260static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4256{ 4261{
4257 __be32 *savep; 4262 unsigned int savep;
4258 uint32_t attrlen, bitmap[3] = {0}; 4263 uint32_t attrlen, bitmap[3] = {0};
4259 int status; 4264 int status;
4260 4265
@@ -4299,7 +4304,8 @@ out_overflow:
4299static int decode_first_threshold_item4(struct xdr_stream *xdr, 4304static int decode_first_threshold_item4(struct xdr_stream *xdr,
4300 struct nfs4_threshold *res) 4305 struct nfs4_threshold *res)
4301{ 4306{
4302 __be32 *p, *savep; 4307 __be32 *p;
4308 unsigned int savep;
4303 uint32_t bitmap[3] = {0,}, attrlen; 4309 uint32_t bitmap[3] = {0,}, attrlen;
4304 int status; 4310 int status;
4305 4311
@@ -4503,7 +4509,7 @@ static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fat
4503 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc, 4509 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4504 const struct nfs_server *server) 4510 const struct nfs_server *server)
4505{ 4511{
4506 __be32 *savep; 4512 unsigned int savep;
4507 uint32_t attrlen, 4513 uint32_t attrlen,
4508 bitmap[3] = {0}; 4514 bitmap[3] = {0};
4509 int status; 4515 int status;
@@ -4615,7 +4621,7 @@ static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4615 4621
4616static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) 4622static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4617{ 4623{
4618 __be32 *savep; 4624 unsigned int savep;
4619 uint32_t attrlen, bitmap[3]; 4625 uint32_t attrlen, bitmap[3];
4620 int status; 4626 int status;
4621 4627
@@ -4920,9 +4926,8 @@ static int decode_putrootfh(struct xdr_stream *xdr)
4920 4926
4921static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res) 4927static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4922{ 4928{
4923 struct kvec *iov = req->rq_rcv_buf.head;
4924 __be32 *p; 4929 __be32 *p;
4925 uint32_t count, eof, recvd, hdrlen; 4930 uint32_t count, eof, recvd;
4926 int status; 4931 int status;
4927 4932
4928 status = decode_op_hdr(xdr, OP_READ); 4933 status = decode_op_hdr(xdr, OP_READ);
@@ -4933,15 +4938,13 @@ static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_
4933 goto out_overflow; 4938 goto out_overflow;
4934 eof = be32_to_cpup(p++); 4939 eof = be32_to_cpup(p++);
4935 count = be32_to_cpup(p); 4940 count = be32_to_cpup(p);
4936 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base; 4941 recvd = xdr_read_pages(xdr, count);
4937 recvd = req->rq_rcv_buf.len - hdrlen;
4938 if (count > recvd) { 4942 if (count > recvd) {
4939 dprintk("NFS: server cheating in read reply: " 4943 dprintk("NFS: server cheating in read reply: "
4940 "count %u > recvd %u\n", count, recvd); 4944 "count %u > recvd %u\n", count, recvd);
4941 count = recvd; 4945 count = recvd;
4942 eof = 0; 4946 eof = 0;
4943 } 4947 }
4944 xdr_read_pages(xdr, count);
4945 res->eof = eof; 4948 res->eof = eof;
4946 res->count = count; 4949 res->count = count;
4947 return 0; 4950 return 0;
@@ -4952,10 +4955,6 @@ out_overflow:
4952 4955
4953static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) 4956static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4954{ 4957{
4955 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4956 struct kvec *iov = rcvbuf->head;
4957 size_t hdrlen;
4958 u32 recvd, pglen = rcvbuf->page_len;
4959 int status; 4958 int status;
4960 __be32 verf[2]; 4959 __be32 verf[2];
4961 4960
@@ -4967,22 +4966,12 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n
4967 memcpy(verf, readdir->verifier.data, sizeof(verf)); 4966 memcpy(verf, readdir->verifier.data, sizeof(verf));
4968 dprintk("%s: verifier = %08x:%08x\n", 4967 dprintk("%s: verifier = %08x:%08x\n",
4969 __func__, verf[0], verf[1]); 4968 __func__, verf[0], verf[1]);
4970 4969 return xdr_read_pages(xdr, xdr->buf->page_len);
4971 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4972 recvd = rcvbuf->len - hdrlen;
4973 if (pglen > recvd)
4974 pglen = recvd;
4975 xdr_read_pages(xdr, pglen);
4976
4977
4978 return pglen;
4979} 4970}
4980 4971
4981static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) 4972static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4982{ 4973{
4983 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4974 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4984 struct kvec *iov = rcvbuf->head;
4985 size_t hdrlen;
4986 u32 len, recvd; 4975 u32 len, recvd;
4987 __be32 *p; 4976 __be32 *p;
4988 int status; 4977 int status;
@@ -5000,14 +4989,12 @@ static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5000 dprintk("nfs: server returned giant symlink!\n"); 4989 dprintk("nfs: server returned giant symlink!\n");
5001 return -ENAMETOOLONG; 4990 return -ENAMETOOLONG;
5002 } 4991 }
5003 hdrlen = (char *) xdr->p - (char *) iov->iov_base; 4992 recvd = xdr_read_pages(xdr, len);
5004 recvd = req->rq_rcv_buf.len - hdrlen;
5005 if (recvd < len) { 4993 if (recvd < len) {
5006 dprintk("NFS: server cheating in readlink reply: " 4994 dprintk("NFS: server cheating in readlink reply: "
5007 "count %u > recvd %u\n", len, recvd); 4995 "count %u > recvd %u\n", len, recvd);
5008 return -EIO; 4996 return -EIO;
5009 } 4997 }
5010 xdr_read_pages(xdr, len);
5011 /* 4998 /*
5012 * The XDR encode routine has set things up so that 4999 * The XDR encode routine has set things up so that
5013 * the link text will be copied directly into the 5000 * the link text will be copied directly into the
@@ -5063,10 +5050,10 @@ decode_restorefh(struct xdr_stream *xdr)
5063static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, 5050static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5064 struct nfs_getaclres *res) 5051 struct nfs_getaclres *res)
5065{ 5052{
5066 __be32 *savep, *bm_p; 5053 unsigned int savep;
5054 __be32 *bm_p;
5067 uint32_t attrlen, 5055 uint32_t attrlen,
5068 bitmap[3] = {0}; 5056 bitmap[3] = {0};
5069 struct kvec *iov = req->rq_rcv_buf.head;
5070 int status; 5057 int status;
5071 size_t page_len = xdr->buf->page_len; 5058 size_t page_len = xdr->buf->page_len;
5072 5059
@@ -5089,7 +5076,6 @@ static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5089 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) 5076 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5090 return -EIO; 5077 return -EIO;
5091 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { 5078 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
5092 size_t hdrlen;
5093 5079
5094 /* The bitmap (xdr len + bitmaps) and the attr xdr len words 5080 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5095 * are stored with the acl data to handle the problem of 5081 * are stored with the acl data to handle the problem of
@@ -5098,7 +5084,6 @@ static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5098 5084
5099 /* We ignore &savep and don't do consistency checks on 5085 /* We ignore &savep and don't do consistency checks on
5100 * the attr length. Let userspace figure it out.... */ 5086 * the attr length. Let userspace figure it out.... */
5101 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
5102 attrlen += res->acl_data_offset; 5087 attrlen += res->acl_data_offset;
5103 if (attrlen > page_len) { 5088 if (attrlen > page_len) {
5104 if (res->acl_flags & NFS4_ACL_LEN_REQUEST) { 5089 if (res->acl_flags & NFS4_ACL_LEN_REQUEST) {
@@ -5212,13 +5197,12 @@ static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5212 if (status) 5197 if (status)
5213 return status; 5198 return status;
5214 5199
5215 p = xdr_inline_decode(xdr, 16); 5200 p = xdr_inline_decode(xdr, 8);
5216 if (unlikely(!p)) 5201 if (unlikely(!p))
5217 goto out_overflow; 5202 goto out_overflow;
5218 res->count = be32_to_cpup(p++); 5203 res->count = be32_to_cpup(p++);
5219 res->verf->committed = be32_to_cpup(p++); 5204 res->verf->committed = be32_to_cpup(p++);
5220 memcpy(res->verf->verifier, p, NFS4_VERIFIER_SIZE); 5205 return decode_write_verifier(xdr, &res->verf->verifier);
5221 return 0;
5222out_overflow: 5206out_overflow:
5223 print_overflow_msg(__func__, xdr); 5207 print_overflow_msg(__func__, xdr);
5224 return -EIO; 5208 return -EIO;
@@ -5599,7 +5583,7 @@ static int decode_getdevicelist(struct xdr_stream *xdr,
5599{ 5583{
5600 __be32 *p; 5584 __be32 *p;
5601 int status, i; 5585 int status, i;
5602 struct nfs_writeverf verftemp; 5586 nfs4_verifier verftemp;
5603 5587
5604 status = decode_op_hdr(xdr, OP_GETDEVICELIST); 5588 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5605 if (status) 5589 if (status)
@@ -5613,7 +5597,7 @@ static int decode_getdevicelist(struct xdr_stream *xdr,
5613 p += 2; 5597 p += 2;
5614 5598
5615 /* Read verifier */ 5599 /* Read verifier */
5616 p = xdr_decode_opaque_fixed(p, verftemp.verifier, NFS4_VERIFIER_SIZE); 5600 p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE);
5617 5601
5618 res->num_devs = be32_to_cpup(p); 5602 res->num_devs = be32_to_cpup(p);
5619 5603
@@ -5707,9 +5691,7 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5707 __be32 *p; 5691 __be32 *p;
5708 int status; 5692 int status;
5709 u32 layout_count; 5693 u32 layout_count;
5710 struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5694 u32 recvd;
5711 struct kvec *iov = rcvbuf->head;
5712 u32 hdrlen, recvd;
5713 5695
5714 status = decode_op_hdr(xdr, OP_LAYOUTGET); 5696 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5715 if (status) 5697 if (status)
@@ -5746,8 +5728,7 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5746 res->type, 5728 res->type,
5747 res->layoutp->len); 5729 res->layoutp->len);
5748 5730
5749 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base; 5731 recvd = xdr_read_pages(xdr, res->layoutp->len);
5750 recvd = req->rq_rcv_buf.len - hdrlen;
5751 if (res->layoutp->len > recvd) { 5732 if (res->layoutp->len > recvd) {
5752 dprintk("NFS: server cheating in layoutget reply: " 5733 dprintk("NFS: server cheating in layoutget reply: "
5753 "layout len %u > recvd %u\n", 5734 "layout len %u > recvd %u\n",
@@ -5755,8 +5736,6 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5755 return -EINVAL; 5736 return -EINVAL;
5756 } 5737 }
5757 5738
5758 xdr_read_pages(xdr, res->layoutp->len);
5759
5760 if (layout_count > 1) { 5739 if (layout_count > 1) {
5761 /* We only handle a length one array at the moment. Any 5740 /* We only handle a length one array at the moment. Any
5762 * further entries are just ignored. Note that this means 5741 * further entries are just ignored. Note that this means
@@ -7103,6 +7082,7 @@ out:
7103int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 7082int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7104 int plus) 7083 int plus)
7105{ 7084{
7085 unsigned int savep;
7106 uint32_t bitmap[3] = {0}; 7086 uint32_t bitmap[3] = {0};
7107 uint32_t len; 7087 uint32_t len;
7108 __be32 *p = xdr_inline_decode(xdr, 4); 7088 __be32 *p = xdr_inline_decode(xdr, 4);
@@ -7141,7 +7121,7 @@ int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7141 if (decode_attr_bitmap(xdr, bitmap) < 0) 7121 if (decode_attr_bitmap(xdr, bitmap) < 0)
7142 goto out_overflow; 7122 goto out_overflow;
7143 7123
7144 if (decode_attr_length(xdr, &len, &p) < 0) 7124 if (decode_attr_length(xdr, &len, &savep) < 0)
7145 goto out_overflow; 7125 goto out_overflow;
7146 7126
7147 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, 7127 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index bbc49caa7a82..7fbd25afe418 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -651,7 +651,14 @@ out_err_free:
651 return NULL; 651 return NULL;
652} 652}
653 653
654/* Initiates a LAYOUTRETURN(FILE) */ 654/*
655 * Initiates a LAYOUTRETURN(FILE), and removes the pnfs_layout_hdr
656 * when the layout segment list is empty.
657 *
658 * Note that a pnfs_layout_hdr can exist with an empty layout segment
659 * list when LAYOUTGET has failed, or when LAYOUTGET succeeded, but the
660 * deviceid is marked invalid.
661 */
655int 662int
656_pnfs_return_layout(struct inode *ino) 663_pnfs_return_layout(struct inode *ino)
657{ 664{
@@ -660,22 +667,31 @@ _pnfs_return_layout(struct inode *ino)
660 LIST_HEAD(tmp_list); 667 LIST_HEAD(tmp_list);
661 struct nfs4_layoutreturn *lrp; 668 struct nfs4_layoutreturn *lrp;
662 nfs4_stateid stateid; 669 nfs4_stateid stateid;
663 int status = 0; 670 int status = 0, empty;
664 671
665 dprintk("--> %s\n", __func__); 672 dprintk("NFS: %s for inode %lu\n", __func__, ino->i_ino);
666 673
667 spin_lock(&ino->i_lock); 674 spin_lock(&ino->i_lock);
668 lo = nfsi->layout; 675 lo = nfsi->layout;
669 if (!lo) { 676 if (!lo || pnfs_test_layout_returned(lo)) {
670 spin_unlock(&ino->i_lock); 677 spin_unlock(&ino->i_lock);
671 dprintk("%s: no layout to return\n", __func__); 678 dprintk("NFS: %s no layout to return\n", __func__);
672 return status; 679 goto out;
673 } 680 }
674 stateid = nfsi->layout->plh_stateid; 681 stateid = nfsi->layout->plh_stateid;
675 /* Reference matched in nfs4_layoutreturn_release */ 682 /* Reference matched in nfs4_layoutreturn_release */
676 get_layout_hdr(lo); 683 get_layout_hdr(lo);
684 empty = list_empty(&lo->plh_segs);
677 mark_matching_lsegs_invalid(lo, &tmp_list, NULL); 685 mark_matching_lsegs_invalid(lo, &tmp_list, NULL);
686 /* Don't send a LAYOUTRETURN if list was initially empty */
687 if (empty) {
688 spin_unlock(&ino->i_lock);
689 put_layout_hdr(lo);
690 dprintk("NFS: %s no layout segments to return\n", __func__);
691 goto out;
692 }
678 lo->plh_block_lgets++; 693 lo->plh_block_lgets++;
694 pnfs_mark_layout_returned(lo);
679 spin_unlock(&ino->i_lock); 695 spin_unlock(&ino->i_lock);
680 pnfs_free_lseg_list(&tmp_list); 696 pnfs_free_lseg_list(&tmp_list);
681 697
@@ -686,6 +702,7 @@ _pnfs_return_layout(struct inode *ino)
686 status = -ENOMEM; 702 status = -ENOMEM;
687 set_bit(NFS_LAYOUT_RW_FAILED, &lo->plh_flags); 703 set_bit(NFS_LAYOUT_RW_FAILED, &lo->plh_flags);
688 set_bit(NFS_LAYOUT_RO_FAILED, &lo->plh_flags); 704 set_bit(NFS_LAYOUT_RO_FAILED, &lo->plh_flags);
705 pnfs_clear_layout_returned(lo);
689 put_layout_hdr(lo); 706 put_layout_hdr(lo);
690 goto out; 707 goto out;
691 } 708 }
@@ -1075,6 +1092,10 @@ pnfs_update_layout(struct inode *ino,
1075 get_layout_hdr(lo); 1092 get_layout_hdr(lo);
1076 if (list_empty(&lo->plh_segs)) 1093 if (list_empty(&lo->plh_segs))
1077 first = true; 1094 first = true;
1095
1096 /* Enable LAYOUTRETURNs */
1097 pnfs_clear_layout_returned(lo);
1098
1078 spin_unlock(&ino->i_lock); 1099 spin_unlock(&ino->i_lock);
1079 if (first) { 1100 if (first) {
1080 /* The lo must be on the clp list if there is any 1101 /* The lo must be on the clp list if there is any
@@ -1209,7 +1230,7 @@ pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *
1209} 1230}
1210EXPORT_SYMBOL_GPL(pnfs_generic_pg_init_write); 1231EXPORT_SYMBOL_GPL(pnfs_generic_pg_init_write);
1211 1232
1212bool 1233void
1213pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode, 1234pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode,
1214 const struct nfs_pgio_completion_ops *compl_ops) 1235 const struct nfs_pgio_completion_ops *compl_ops)
1215{ 1236{
@@ -1217,13 +1238,12 @@ pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode,
1217 struct pnfs_layoutdriver_type *ld = server->pnfs_curr_ld; 1238 struct pnfs_layoutdriver_type *ld = server->pnfs_curr_ld;
1218 1239
1219 if (ld == NULL) 1240 if (ld == NULL)
1220 return false; 1241 nfs_pageio_init_read(pgio, inode, compl_ops);
1221 nfs_pageio_init(pgio, inode, ld->pg_read_ops, compl_ops, 1242 else
1222 server->rsize, 0); 1243 nfs_pageio_init(pgio, inode, ld->pg_read_ops, compl_ops, server->rsize, 0);
1223 return true;
1224} 1244}
1225 1245
1226bool 1246void
1227pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, 1247pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode,
1228 int ioflags, 1248 int ioflags,
1229 const struct nfs_pgio_completion_ops *compl_ops) 1249 const struct nfs_pgio_completion_ops *compl_ops)
@@ -1232,10 +1252,9 @@ pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode,
1232 struct pnfs_layoutdriver_type *ld = server->pnfs_curr_ld; 1252 struct pnfs_layoutdriver_type *ld = server->pnfs_curr_ld;
1233 1253
1234 if (ld == NULL) 1254 if (ld == NULL)
1235 return false; 1255 nfs_pageio_init_write(pgio, inode, ioflags, compl_ops);
1236 nfs_pageio_init(pgio, inode, ld->pg_write_ops, compl_ops, 1256 else
1237 server->wsize, ioflags); 1257 nfs_pageio_init(pgio, inode, ld->pg_write_ops, compl_ops, server->wsize, ioflags);
1238 return true;
1239} 1258}
1240 1259
1241bool 1260bool
@@ -1272,7 +1291,7 @@ int pnfs_write_done_resend_to_mds(struct inode *inode,
1272 LIST_HEAD(failed); 1291 LIST_HEAD(failed);
1273 1292
1274 /* Resend all requests through the MDS */ 1293 /* Resend all requests through the MDS */
1275 nfs_pageio_init_write_mds(&pgio, inode, FLUSH_STABLE, compl_ops); 1294 nfs_pageio_init_write(&pgio, inode, FLUSH_STABLE, compl_ops);
1276 while (!list_empty(head)) { 1295 while (!list_empty(head)) {
1277 struct nfs_page *req = nfs_list_entry(head->next); 1296 struct nfs_page *req = nfs_list_entry(head->next);
1278 1297
@@ -1427,7 +1446,7 @@ int pnfs_read_done_resend_to_mds(struct inode *inode,
1427 LIST_HEAD(failed); 1446 LIST_HEAD(failed);
1428 1447
1429 /* Resend all requests through the MDS */ 1448 /* Resend all requests through the MDS */
1430 nfs_pageio_init_read_mds(&pgio, inode, compl_ops); 1449 nfs_pageio_init_read(&pgio, inode, compl_ops);
1431 while (!list_empty(head)) { 1450 while (!list_empty(head)) {
1432 struct nfs_page *req = nfs_list_entry(head->next); 1451 struct nfs_page *req = nfs_list_entry(head->next);
1433 1452
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 64f90d845f6a..2c6c80503ba4 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -64,6 +64,7 @@ enum {
64 NFS_LAYOUT_ROC, /* some lseg had roc bit set */ 64 NFS_LAYOUT_ROC, /* some lseg had roc bit set */
65 NFS_LAYOUT_DESTROYED, /* no new use of layout allowed */ 65 NFS_LAYOUT_DESTROYED, /* no new use of layout allowed */
66 NFS_LAYOUT_INVALID, /* layout is being destroyed */ 66 NFS_LAYOUT_INVALID, /* layout is being destroyed */
67 NFS_LAYOUT_RETURNED, /* layout has already been returned */
67}; 68};
68 69
69enum layoutdriver_policy_flags { 70enum layoutdriver_policy_flags {
@@ -178,9 +179,9 @@ extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp);
178void get_layout_hdr(struct pnfs_layout_hdr *lo); 179void get_layout_hdr(struct pnfs_layout_hdr *lo);
179void put_lseg(struct pnfs_layout_segment *lseg); 180void put_lseg(struct pnfs_layout_segment *lseg);
180 181
181bool pnfs_pageio_init_read(struct nfs_pageio_descriptor *, struct inode *, 182void pnfs_pageio_init_read(struct nfs_pageio_descriptor *, struct inode *,
182 const struct nfs_pgio_completion_ops *); 183 const struct nfs_pgio_completion_ops *);
183bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *, struct inode *, 184void pnfs_pageio_init_write(struct nfs_pageio_descriptor *, struct inode *,
184 int, const struct nfs_pgio_completion_ops *); 185 int, const struct nfs_pgio_completion_ops *);
185 186
186void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32); 187void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32);
@@ -255,6 +256,24 @@ struct nfs4_deviceid_node *nfs4_insert_deviceid_node(struct nfs4_deviceid_node *
255bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); 256bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *);
256void nfs4_deviceid_purge_client(const struct nfs_client *); 257void nfs4_deviceid_purge_client(const struct nfs_client *);
257 258
259static inline void
260pnfs_mark_layout_returned(struct pnfs_layout_hdr *lo)
261{
262 set_bit(NFS_LAYOUT_RETURNED, &lo->plh_flags);
263}
264
265static inline void
266pnfs_clear_layout_returned(struct pnfs_layout_hdr *lo)
267{
268 clear_bit(NFS_LAYOUT_RETURNED, &lo->plh_flags);
269}
270
271static inline bool
272pnfs_test_layout_returned(struct pnfs_layout_hdr *lo)
273{
274 return test_bit(NFS_LAYOUT_RETURNED, &lo->plh_flags);
275}
276
258static inline int lo_fail_bit(u32 iomode) 277static inline int lo_fail_bit(u32 iomode)
259{ 278{
260 return iomode == IOMODE_RW ? 279 return iomode == IOMODE_RW ?
@@ -438,16 +457,16 @@ static inline void unset_pnfs_layoutdriver(struct nfs_server *s)
438{ 457{
439} 458}
440 459
441static inline bool pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode, 460static inline void pnfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode,
442 const struct nfs_pgio_completion_ops *compl_ops) 461 const struct nfs_pgio_completion_ops *compl_ops)
443{ 462{
444 return false; 463 nfs_pageio_init_read(pgio, inode, compl_ops);
445} 464}
446 465
447static inline bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags, 466static inline void pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, struct inode *inode, int ioflags,
448 const struct nfs_pgio_completion_ops *compl_ops) 467 const struct nfs_pgio_completion_ops *compl_ops)
449{ 468{
450 return false; 469 nfs_pageio_init_write(pgio, inode, ioflags, compl_ops);
451} 470}
452 471
453static inline int 472static inline int
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index 4433806e116f..4d3356af3309 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -734,6 +734,38 @@ out_einval:
734 return -EINVAL; 734 return -EINVAL;
735} 735}
736 736
737static int nfs_have_delegation(struct inode *inode, fmode_t flags)
738{
739 return 0;
740}
741
742static int nfs_return_delegation(struct inode *inode)
743{
744 nfs_wb_all(inode);
745 return 0;
746}
747
748static const struct inode_operations nfs_dir_inode_operations = {
749 .create = nfs_create,
750 .lookup = nfs_lookup,
751 .link = nfs_link,
752 .unlink = nfs_unlink,
753 .symlink = nfs_symlink,
754 .mkdir = nfs_mkdir,
755 .rmdir = nfs_rmdir,
756 .mknod = nfs_mknod,
757 .rename = nfs_rename,
758 .permission = nfs_permission,
759 .getattr = nfs_getattr,
760 .setattr = nfs_setattr,
761};
762
763static const struct inode_operations nfs_file_inode_operations = {
764 .permission = nfs_permission,
765 .getattr = nfs_getattr,
766 .setattr = nfs_setattr,
767};
768
737const struct nfs_rpc_ops nfs_v2_clientops = { 769const struct nfs_rpc_ops nfs_v2_clientops = {
738 .version = 2, /* protocol version */ 770 .version = 2, /* protocol version */
739 .dentry_ops = &nfs_dentry_operations, 771 .dentry_ops = &nfs_dentry_operations,
@@ -767,9 +799,11 @@ const struct nfs_rpc_ops nfs_v2_clientops = {
767 .pathconf = nfs_proc_pathconf, 799 .pathconf = nfs_proc_pathconf,
768 .decode_dirent = nfs2_decode_dirent, 800 .decode_dirent = nfs2_decode_dirent,
769 .read_setup = nfs_proc_read_setup, 801 .read_setup = nfs_proc_read_setup,
802 .read_pageio_init = nfs_pageio_init_read,
770 .read_rpc_prepare = nfs_proc_read_rpc_prepare, 803 .read_rpc_prepare = nfs_proc_read_rpc_prepare,
771 .read_done = nfs_read_done, 804 .read_done = nfs_read_done,
772 .write_setup = nfs_proc_write_setup, 805 .write_setup = nfs_proc_write_setup,
806 .write_pageio_init = nfs_pageio_init_write,
773 .write_rpc_prepare = nfs_proc_write_rpc_prepare, 807 .write_rpc_prepare = nfs_proc_write_rpc_prepare,
774 .write_done = nfs_write_done, 808 .write_done = nfs_write_done,
775 .commit_setup = nfs_proc_commit_setup, 809 .commit_setup = nfs_proc_commit_setup,
@@ -777,5 +811,9 @@ const struct nfs_rpc_ops nfs_v2_clientops = {
777 .lock = nfs_proc_lock, 811 .lock = nfs_proc_lock,
778 .lock_check_bounds = nfs_lock_check_bounds, 812 .lock_check_bounds = nfs_lock_check_bounds,
779 .close_context = nfs_close_context, 813 .close_context = nfs_close_context,
814 .have_delegation = nfs_have_delegation,
815 .return_delegation = nfs_return_delegation,
816 .alloc_client = nfs_alloc_client,
780 .init_client = nfs_init_client, 817 .init_client = nfs_init_client,
818 .free_client = nfs_free_client,
781}; 819};
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 86ced7836214..6267b873bbcb 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -20,8 +20,6 @@
20#include <linux/nfs_page.h> 20#include <linux/nfs_page.h>
21#include <linux/module.h> 21#include <linux/module.h>
22 22
23#include "pnfs.h"
24
25#include "nfs4_fs.h" 23#include "nfs4_fs.h"
26#include "internal.h" 24#include "internal.h"
27#include "iostat.h" 25#include "iostat.h"
@@ -108,7 +106,7 @@ int nfs_return_empty_page(struct page *page)
108 return 0; 106 return 0;
109} 107}
110 108
111void nfs_pageio_init_read_mds(struct nfs_pageio_descriptor *pgio, 109void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
112 struct inode *inode, 110 struct inode *inode,
113 const struct nfs_pgio_completion_ops *compl_ops) 111 const struct nfs_pgio_completion_ops *compl_ops)
114{ 112{
@@ -123,14 +121,6 @@ void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio)
123} 121}
124EXPORT_SYMBOL_GPL(nfs_pageio_reset_read_mds); 122EXPORT_SYMBOL_GPL(nfs_pageio_reset_read_mds);
125 123
126void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
127 struct inode *inode,
128 const struct nfs_pgio_completion_ops *compl_ops)
129{
130 if (!pnfs_pageio_init_read(pgio, inode, compl_ops))
131 nfs_pageio_init_read_mds(pgio, inode, compl_ops);
132}
133
134int nfs_readpage_async(struct nfs_open_context *ctx, struct inode *inode, 124int nfs_readpage_async(struct nfs_open_context *ctx, struct inode *inode,
135 struct page *page) 125 struct page *page)
136{ 126{
@@ -149,7 +139,7 @@ int nfs_readpage_async(struct nfs_open_context *ctx, struct inode *inode,
149 if (len < PAGE_CACHE_SIZE) 139 if (len < PAGE_CACHE_SIZE)
150 zero_user_segment(page, len, PAGE_CACHE_SIZE); 140 zero_user_segment(page, len, PAGE_CACHE_SIZE);
151 141
152 nfs_pageio_init_read(&pgio, inode, &nfs_async_read_completion_ops); 142 NFS_PROTO(inode)->read_pageio_init(&pgio, inode, &nfs_async_read_completion_ops);
153 nfs_pageio_add_request(&pgio, new); 143 nfs_pageio_add_request(&pgio, new);
154 nfs_pageio_complete(&pgio); 144 nfs_pageio_complete(&pgio);
155 NFS_I(inode)->read_io += pgio.pg_bytes_written; 145 NFS_I(inode)->read_io += pgio.pg_bytes_written;
@@ -652,7 +642,7 @@ int nfs_readpages(struct file *filp, struct address_space *mapping,
652 if (ret == 0) 642 if (ret == 0)
653 goto read_complete; /* all pages were read */ 643 goto read_complete; /* all pages were read */
654 644
655 nfs_pageio_init_read(&pgio, inode, &nfs_async_read_completion_ops); 645 NFS_PROTO(inode)->read_pageio_init(&pgio, inode, &nfs_async_read_completion_ops);
656 646
657 ret = read_cache_pages(mapping, pages, readpage_async_filler, &desc); 647 ret = read_cache_pages(mapping, pages, readpage_async_filler, &desc);
658 648
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 8b2a2977b720..95866a8c21bb 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -278,29 +278,8 @@ static match_table_t nfs_vers_tokens = {
278 { Opt_vers_err, NULL } 278 { Opt_vers_err, NULL }
279}; 279};
280 280
281struct nfs_mount_info {
282 void (*fill_super)(struct super_block *, struct nfs_mount_info *);
283 int (*set_security)(struct super_block *, struct dentry *, struct nfs_mount_info *);
284 struct nfs_parsed_mount_data *parsed;
285 struct nfs_clone_mount *cloned;
286 struct nfs_fh *mntfh;
287};
288
289static void nfs_umount_begin(struct super_block *);
290static int nfs_statfs(struct dentry *, struct kstatfs *);
291static int nfs_show_options(struct seq_file *, struct dentry *);
292static int nfs_show_devname(struct seq_file *, struct dentry *);
293static int nfs_show_path(struct seq_file *, struct dentry *);
294static int nfs_show_stats(struct seq_file *, struct dentry *);
295static struct dentry *nfs_fs_mount_common(struct file_system_type *,
296 struct nfs_server *, int, const char *, struct nfs_mount_info *);
297static struct dentry *nfs_fs_mount(struct file_system_type *,
298 int, const char *, void *);
299static struct dentry *nfs_xdev_mount(struct file_system_type *fs_type, 281static struct dentry *nfs_xdev_mount(struct file_system_type *fs_type,
300 int flags, const char *dev_name, void *raw_data); 282 int flags, const char *dev_name, void *raw_data);
301static void nfs_put_super(struct super_block *);
302static void nfs_kill_super(struct super_block *);
303static int nfs_remount(struct super_block *sb, int *flags, char *raw_data);
304 283
305static struct file_system_type nfs_fs_type = { 284static struct file_system_type nfs_fs_type = {
306 .owner = THIS_MODULE, 285 .owner = THIS_MODULE,
@@ -337,72 +316,6 @@ static const struct super_operations nfs_sops = {
337static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *); 316static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *);
338static int nfs4_validate_mount_data(void *options, 317static int nfs4_validate_mount_data(void *options,
339 struct nfs_parsed_mount_data *args, const char *dev_name); 318 struct nfs_parsed_mount_data *args, const char *dev_name);
340static struct dentry *nfs4_try_mount(int flags, const char *dev_name,
341 struct nfs_mount_info *mount_info);
342static struct dentry *nfs4_remote_mount(struct file_system_type *fs_type,
343 int flags, const char *dev_name, void *raw_data);
344static struct dentry *nfs4_xdev_mount(struct file_system_type *fs_type,
345 int flags, const char *dev_name, void *raw_data);
346static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
347 int flags, const char *dev_name, void *raw_data);
348static struct dentry *nfs4_remote_referral_mount(struct file_system_type *fs_type,
349 int flags, const char *dev_name, void *raw_data);
350static void nfs4_kill_super(struct super_block *sb);
351
352static struct file_system_type nfs4_fs_type = {
353 .owner = THIS_MODULE,
354 .name = "nfs4",
355 .mount = nfs_fs_mount,
356 .kill_sb = nfs4_kill_super,
357 .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
358};
359
360static struct file_system_type nfs4_remote_fs_type = {
361 .owner = THIS_MODULE,
362 .name = "nfs4",
363 .mount = nfs4_remote_mount,
364 .kill_sb = nfs4_kill_super,
365 .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
366};
367
368struct file_system_type nfs4_xdev_fs_type = {
369 .owner = THIS_MODULE,
370 .name = "nfs4",
371 .mount = nfs4_xdev_mount,
372 .kill_sb = nfs4_kill_super,
373 .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
374};
375
376static struct file_system_type nfs4_remote_referral_fs_type = {
377 .owner = THIS_MODULE,
378 .name = "nfs4",
379 .mount = nfs4_remote_referral_mount,
380 .kill_sb = nfs4_kill_super,
381 .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
382};
383
384struct file_system_type nfs4_referral_fs_type = {
385 .owner = THIS_MODULE,
386 .name = "nfs4",
387 .mount = nfs4_referral_mount,
388 .kill_sb = nfs4_kill_super,
389 .fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
390};
391
392static const struct super_operations nfs4_sops = {
393 .alloc_inode = nfs_alloc_inode,
394 .destroy_inode = nfs_destroy_inode,
395 .write_inode = nfs_write_inode,
396 .put_super = nfs_put_super,
397 .statfs = nfs_statfs,
398 .evict_inode = nfs4_evict_inode,
399 .umount_begin = nfs_umount_begin,
400 .show_options = nfs_show_options,
401 .show_devname = nfs_show_devname,
402 .show_path = nfs_show_path,
403 .show_stats = nfs_show_stats,
404 .remount_fs = nfs_remount,
405};
406#endif 319#endif
407 320
408static struct shrinker acl_shrinker = { 321static struct shrinker acl_shrinker = {
@@ -424,18 +337,9 @@ int __init register_nfs_fs(void)
424 ret = nfs_register_sysctl(); 337 ret = nfs_register_sysctl();
425 if (ret < 0) 338 if (ret < 0)
426 goto error_1; 339 goto error_1;
427#ifdef CONFIG_NFS_V4
428 ret = register_filesystem(&nfs4_fs_type);
429 if (ret < 0)
430 goto error_2;
431#endif
432 register_shrinker(&acl_shrinker); 340 register_shrinker(&acl_shrinker);
433 return 0; 341 return 0;
434 342
435#ifdef CONFIG_NFS_V4
436error_2:
437 nfs_unregister_sysctl();
438#endif
439error_1: 343error_1:
440 unregister_filesystem(&nfs_fs_type); 344 unregister_filesystem(&nfs_fs_type);
441error_0: 345error_0:
@@ -448,9 +352,6 @@ error_0:
448void __exit unregister_nfs_fs(void) 352void __exit unregister_nfs_fs(void)
449{ 353{
450 unregister_shrinker(&acl_shrinker); 354 unregister_shrinker(&acl_shrinker);
451#ifdef CONFIG_NFS_V4
452 unregister_filesystem(&nfs4_fs_type);
453#endif
454 nfs_unregister_sysctl(); 355 nfs_unregister_sysctl();
455 unregister_filesystem(&nfs_fs_type); 356 unregister_filesystem(&nfs_fs_type);
456} 357}
@@ -474,7 +375,7 @@ void nfs_sb_deactive(struct super_block *sb)
474/* 375/*
475 * Deliver file system statistics to userspace 376 * Deliver file system statistics to userspace
476 */ 377 */
477static int nfs_statfs(struct dentry *dentry, struct kstatfs *buf) 378int nfs_statfs(struct dentry *dentry, struct kstatfs *buf)
478{ 379{
479 struct nfs_server *server = NFS_SB(dentry->d_sb); 380 struct nfs_server *server = NFS_SB(dentry->d_sb);
480 unsigned char blockbits; 381 unsigned char blockbits;
@@ -757,7 +658,7 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
757/* 658/*
758 * Describe the mount options on this VFS mountpoint 659 * Describe the mount options on this VFS mountpoint
759 */ 660 */
760static int nfs_show_options(struct seq_file *m, struct dentry *root) 661int nfs_show_options(struct seq_file *m, struct dentry *root)
761{ 662{
762 struct nfs_server *nfss = NFS_SB(root->d_sb); 663 struct nfs_server *nfss = NFS_SB(root->d_sb);
763 664
@@ -815,7 +716,7 @@ static void show_implementation_id(struct seq_file *m, struct nfs_server *nfss)
815} 716}
816#endif 717#endif
817 718
818static int nfs_show_devname(struct seq_file *m, struct dentry *root) 719int nfs_show_devname(struct seq_file *m, struct dentry *root)
819{ 720{
820 char *page = (char *) __get_free_page(GFP_KERNEL); 721 char *page = (char *) __get_free_page(GFP_KERNEL);
821 char *devname, *dummy; 722 char *devname, *dummy;
@@ -831,7 +732,7 @@ static int nfs_show_devname(struct seq_file *m, struct dentry *root)
831 return err; 732 return err;
832} 733}
833 734
834static int nfs_show_path(struct seq_file *m, struct dentry *dentry) 735int nfs_show_path(struct seq_file *m, struct dentry *dentry)
835{ 736{
836 seq_puts(m, "/"); 737 seq_puts(m, "/");
837 return 0; 738 return 0;
@@ -840,7 +741,7 @@ static int nfs_show_path(struct seq_file *m, struct dentry *dentry)
840/* 741/*
841 * Present statistical information for this VFS mountpoint 742 * Present statistical information for this VFS mountpoint
842 */ 743 */
843static int nfs_show_stats(struct seq_file *m, struct dentry *root) 744int nfs_show_stats(struct seq_file *m, struct dentry *root)
844{ 745{
845 int i, cpu; 746 int i, cpu;
846 struct nfs_server *nfss = NFS_SB(root->d_sb); 747 struct nfs_server *nfss = NFS_SB(root->d_sb);
@@ -933,7 +834,7 @@ static int nfs_show_stats(struct seq_file *m, struct dentry *root)
933 * Begin unmount by attempting to remove all automounted mountpoints we added 834 * Begin unmount by attempting to remove all automounted mountpoints we added
934 * in response to xdev traversals and referrals 835 * in response to xdev traversals and referrals
935 */ 836 */
936static void nfs_umount_begin(struct super_block *sb) 837void nfs_umount_begin(struct super_block *sb)
937{ 838{
938 struct nfs_server *server; 839 struct nfs_server *server;
939 struct rpc_clnt *rpc; 840 struct rpc_clnt *rpc;
@@ -2108,7 +2009,7 @@ nfs_compare_remount_data(struct nfs_server *nfss,
2108 return 0; 2009 return 0;
2109} 2010}
2110 2011
2111static int 2012int
2112nfs_remount(struct super_block *sb, int *flags, char *raw_data) 2013nfs_remount(struct super_block *sb, int *flags, char *raw_data)
2113{ 2014{
2114 int error; 2015 int error;
@@ -2173,7 +2074,7 @@ out:
2173/* 2074/*
2174 * Initialise the common bits of the superblock 2075 * Initialise the common bits of the superblock
2175 */ 2076 */
2176static inline void nfs_initialise_sb(struct super_block *sb) 2077inline void nfs_initialise_sb(struct super_block *sb)
2177{ 2078{
2178 struct nfs_server *server = NFS_SB(sb); 2079 struct nfs_server *server = NFS_SB(sb);
2179 2080
@@ -2195,8 +2096,7 @@ static inline void nfs_initialise_sb(struct super_block *sb)
2195/* 2096/*
2196 * Finish setting up an NFS2/3 superblock 2097 * Finish setting up an NFS2/3 superblock
2197 */ 2098 */
2198static void nfs_fill_super(struct super_block *sb, 2099void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info)
2199 struct nfs_mount_info *mount_info)
2200{ 2100{
2201 struct nfs_parsed_mount_data *data = mount_info->parsed; 2101 struct nfs_parsed_mount_data *data = mount_info->parsed;
2202 struct nfs_server *server = NFS_SB(sb); 2102 struct nfs_server *server = NFS_SB(sb);
@@ -2219,10 +2119,9 @@ static void nfs_fill_super(struct super_block *sb,
2219} 2119}
2220 2120
2221/* 2121/*
2222 * Finish setting up a cloned NFS2/3 superblock 2122 * Finish setting up a cloned NFS2/3/4 superblock
2223 */ 2123 */
2224static void nfs_clone_super(struct super_block *sb, 2124void nfs_clone_super(struct super_block *sb, struct nfs_mount_info *mount_info)
2225 struct nfs_mount_info *mount_info)
2226{ 2125{
2227 const struct super_block *old_sb = mount_info->cloned->sb; 2126 const struct super_block *old_sb = mount_info->cloned->sb;
2228 struct nfs_server *server = NFS_SB(sb); 2127 struct nfs_server *server = NFS_SB(sb);
@@ -2230,16 +2129,17 @@ static void nfs_clone_super(struct super_block *sb,
2230 sb->s_blocksize_bits = old_sb->s_blocksize_bits; 2129 sb->s_blocksize_bits = old_sb->s_blocksize_bits;
2231 sb->s_blocksize = old_sb->s_blocksize; 2130 sb->s_blocksize = old_sb->s_blocksize;
2232 sb->s_maxbytes = old_sb->s_maxbytes; 2131 sb->s_maxbytes = old_sb->s_maxbytes;
2132 sb->s_xattr = old_sb->s_xattr;
2133 sb->s_op = old_sb->s_op;
2134 sb->s_time_gran = 1;
2233 2135
2234 if (server->nfs_client->rpc_ops->version == 3) { 2136 if (server->nfs_client->rpc_ops->version != 2) {
2235 /* The VFS shouldn't apply the umask to mode bits. We will do 2137 /* The VFS shouldn't apply the umask to mode bits. We will do
2236 * so ourselves when necessary. 2138 * so ourselves when necessary.
2237 */ 2139 */
2238 sb->s_flags |= MS_POSIXACL; 2140 sb->s_flags |= MS_POSIXACL;
2239 sb->s_time_gran = 1;
2240 } 2141 }
2241 2142
2242 sb->s_op = old_sb->s_op;
2243 nfs_initialise_sb(sb); 2143 nfs_initialise_sb(sb);
2244} 2144}
2245 2145
@@ -2381,14 +2281,14 @@ static int nfs_bdi_register(struct nfs_server *server)
2381 return bdi_register_dev(&server->backing_dev_info, server->s_dev); 2281 return bdi_register_dev(&server->backing_dev_info, server->s_dev);
2382} 2282}
2383 2283
2384static int nfs_set_sb_security(struct super_block *s, struct dentry *mntroot, 2284int nfs_set_sb_security(struct super_block *s, struct dentry *mntroot,
2385 struct nfs_mount_info *mount_info) 2285 struct nfs_mount_info *mount_info)
2386{ 2286{
2387 return security_sb_set_mnt_opts(s, &mount_info->parsed->lsm_opts); 2287 return security_sb_set_mnt_opts(s, &mount_info->parsed->lsm_opts);
2388} 2288}
2389 2289
2390static int nfs_clone_sb_security(struct super_block *s, struct dentry *mntroot, 2290int nfs_clone_sb_security(struct super_block *s, struct dentry *mntroot,
2391 struct nfs_mount_info *mount_info) 2291 struct nfs_mount_info *mount_info)
2392{ 2292{
2393 /* clone any lsm security options from the parent to the new sb */ 2293 /* clone any lsm security options from the parent to the new sb */
2394 security_sb_clone_mnt_opts(mount_info->cloned->sb, s); 2294 security_sb_clone_mnt_opts(mount_info->cloned->sb, s);
@@ -2397,10 +2297,10 @@ static int nfs_clone_sb_security(struct super_block *s, struct dentry *mntroot,
2397 return 0; 2297 return 0;
2398} 2298}
2399 2299
2400static struct dentry *nfs_fs_mount_common(struct file_system_type *fs_type, 2300struct dentry *nfs_fs_mount_common(struct file_system_type *fs_type,
2401 struct nfs_server *server, 2301 struct nfs_server *server,
2402 int flags, const char *dev_name, 2302 int flags, const char *dev_name,
2403 struct nfs_mount_info *mount_info) 2303 struct nfs_mount_info *mount_info)
2404{ 2304{
2405 struct super_block *s; 2305 struct super_block *s;
2406 struct dentry *mntroot = ERR_PTR(-ENOMEM); 2306 struct dentry *mntroot = ERR_PTR(-ENOMEM);
@@ -2470,7 +2370,7 @@ error_splat_bdi:
2470 goto out; 2370 goto out;
2471} 2371}
2472 2372
2473static struct dentry *nfs_fs_mount(struct file_system_type *fs_type, 2373struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
2474 int flags, const char *dev_name, void *raw_data) 2374 int flags, const char *dev_name, void *raw_data)
2475{ 2375{
2476 struct nfs_mount_info mount_info = { 2376 struct nfs_mount_info mount_info = {
@@ -2511,7 +2411,7 @@ out:
2511 * Ensure that we unregister the bdi before kill_anon_super 2411 * Ensure that we unregister the bdi before kill_anon_super
2512 * releases the device name 2412 * releases the device name
2513 */ 2413 */
2514static void nfs_put_super(struct super_block *s) 2414void nfs_put_super(struct super_block *s)
2515{ 2415{
2516 struct nfs_server *server = NFS_SB(s); 2416 struct nfs_server *server = NFS_SB(s);
2517 2417
@@ -2521,7 +2421,7 @@ static void nfs_put_super(struct super_block *s)
2521/* 2421/*
2522 * Destroy an NFS2/3 superblock 2422 * Destroy an NFS2/3 superblock
2523 */ 2423 */
2524static void nfs_kill_super(struct super_block *s) 2424void nfs_kill_super(struct super_block *s)
2525{ 2425{
2526 struct nfs_server *server = NFS_SB(s); 2426 struct nfs_server *server = NFS_SB(s);
2527 2427
@@ -2533,7 +2433,7 @@ static void nfs_kill_super(struct super_block *s)
2533/* 2433/*
2534 * Clone an NFS2/3/4 server record on xdev traversal (FSID-change) 2434 * Clone an NFS2/3/4 server record on xdev traversal (FSID-change)
2535 */ 2435 */
2536static struct dentry * 2436struct dentry *
2537nfs_xdev_mount_common(struct file_system_type *fs_type, int flags, 2437nfs_xdev_mount_common(struct file_system_type *fs_type, int flags,
2538 const char *dev_name, struct nfs_mount_info *mount_info) 2438 const char *dev_name, struct nfs_mount_info *mount_info)
2539{ 2439{
@@ -2580,44 +2480,6 @@ nfs_xdev_mount(struct file_system_type *fs_type, int flags,
2580 2480
2581#ifdef CONFIG_NFS_V4 2481#ifdef CONFIG_NFS_V4
2582 2482
2583/*
2584 * Finish setting up a cloned NFS4 superblock
2585 */
2586static void nfs4_clone_super(struct super_block *sb,
2587 struct nfs_mount_info *mount_info)
2588{
2589 const struct super_block *old_sb = mount_info->cloned->sb;
2590 sb->s_blocksize_bits = old_sb->s_blocksize_bits;
2591 sb->s_blocksize = old_sb->s_blocksize;
2592 sb->s_maxbytes = old_sb->s_maxbytes;
2593 sb->s_time_gran = 1;
2594 sb->s_op = old_sb->s_op;
2595 /*
2596 * The VFS shouldn't apply the umask to mode bits. We will do
2597 * so ourselves when necessary.
2598 */
2599 sb->s_flags |= MS_POSIXACL;
2600 sb->s_xattr = old_sb->s_xattr;
2601 nfs_initialise_sb(sb);
2602}
2603
2604/*
2605 * Set up an NFS4 superblock
2606 */
2607static void nfs4_fill_super(struct super_block *sb,
2608 struct nfs_mount_info *mount_info)
2609{
2610 sb->s_time_gran = 1;
2611 sb->s_op = &nfs4_sops;
2612 /*
2613 * The VFS shouldn't apply the umask to mode bits. We will do
2614 * so ourselves when necessary.
2615 */
2616 sb->s_flags |= MS_POSIXACL;
2617 sb->s_xattr = nfs4_xattr_handlers;
2618 nfs_initialise_sb(sb);
2619}
2620
2621static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *args) 2483static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *args)
2622{ 2484{
2623 args->flags &= ~(NFS_MOUNT_NONLM|NFS_MOUNT_NOACL|NFS_MOUNT_VER3| 2485 args->flags &= ~(NFS_MOUNT_NONLM|NFS_MOUNT_NOACL|NFS_MOUNT_VER3|
@@ -2715,250 +2577,4 @@ out_no_address:
2715 return -EINVAL; 2577 return -EINVAL;
2716} 2578}
2717 2579
2718/*
2719 * Get the superblock for the NFS4 root partition
2720 */
2721static struct dentry *
2722nfs4_remote_mount(struct file_system_type *fs_type, int flags,
2723 const char *dev_name, void *info)
2724{
2725 struct nfs_mount_info *mount_info = info;
2726 struct nfs_server *server;
2727 struct dentry *mntroot = ERR_PTR(-ENOMEM);
2728
2729 mount_info->fill_super = nfs4_fill_super;
2730 mount_info->set_security = nfs_set_sb_security;
2731
2732 /* Get a volume representation */
2733 server = nfs4_create_server(mount_info->parsed, mount_info->mntfh);
2734 if (IS_ERR(server)) {
2735 mntroot = ERR_CAST(server);
2736 goto out;
2737 }
2738
2739 mntroot = nfs_fs_mount_common(fs_type, server, flags, dev_name, mount_info);
2740
2741out:
2742 return mntroot;
2743}
2744
2745static struct vfsmount *nfs_do_root_mount(struct file_system_type *fs_type,
2746 int flags, void *data, const char *hostname)
2747{
2748 struct vfsmount *root_mnt;
2749 char *root_devname;
2750 size_t len;
2751
2752 len = strlen(hostname) + 5;
2753 root_devname = kmalloc(len, GFP_KERNEL);
2754 if (root_devname == NULL)
2755 return ERR_PTR(-ENOMEM);
2756 /* Does hostname needs to be enclosed in brackets? */
2757 if (strchr(hostname, ':'))
2758 snprintf(root_devname, len, "[%s]:/", hostname);
2759 else
2760 snprintf(root_devname, len, "%s:/", hostname);
2761 root_mnt = vfs_kern_mount(fs_type, flags, root_devname, data);
2762 kfree(root_devname);
2763 return root_mnt;
2764}
2765
2766struct nfs_referral_count {
2767 struct list_head list;
2768 const struct task_struct *task;
2769 unsigned int referral_count;
2770};
2771
2772static LIST_HEAD(nfs_referral_count_list);
2773static DEFINE_SPINLOCK(nfs_referral_count_list_lock);
2774
2775static struct nfs_referral_count *nfs_find_referral_count(void)
2776{
2777 struct nfs_referral_count *p;
2778
2779 list_for_each_entry(p, &nfs_referral_count_list, list) {
2780 if (p->task == current)
2781 return p;
2782 }
2783 return NULL;
2784}
2785
2786#define NFS_MAX_NESTED_REFERRALS 2
2787
2788static int nfs_referral_loop_protect(void)
2789{
2790 struct nfs_referral_count *p, *new;
2791 int ret = -ENOMEM;
2792
2793 new = kmalloc(sizeof(*new), GFP_KERNEL);
2794 if (!new)
2795 goto out;
2796 new->task = current;
2797 new->referral_count = 1;
2798
2799 ret = 0;
2800 spin_lock(&nfs_referral_count_list_lock);
2801 p = nfs_find_referral_count();
2802 if (p != NULL) {
2803 if (p->referral_count >= NFS_MAX_NESTED_REFERRALS)
2804 ret = -ELOOP;
2805 else
2806 p->referral_count++;
2807 } else {
2808 list_add(&new->list, &nfs_referral_count_list);
2809 new = NULL;
2810 }
2811 spin_unlock(&nfs_referral_count_list_lock);
2812 kfree(new);
2813out:
2814 return ret;
2815}
2816
2817static void nfs_referral_loop_unprotect(void)
2818{
2819 struct nfs_referral_count *p;
2820
2821 spin_lock(&nfs_referral_count_list_lock);
2822 p = nfs_find_referral_count();
2823 p->referral_count--;
2824 if (p->referral_count == 0)
2825 list_del(&p->list);
2826 else
2827 p = NULL;
2828 spin_unlock(&nfs_referral_count_list_lock);
2829 kfree(p);
2830}
2831
2832static struct dentry *nfs_follow_remote_path(struct vfsmount *root_mnt,
2833 const char *export_path)
2834{
2835 struct dentry *dentry;
2836 int err;
2837
2838 if (IS_ERR(root_mnt))
2839 return ERR_CAST(root_mnt);
2840
2841 err = nfs_referral_loop_protect();
2842 if (err) {
2843 mntput(root_mnt);
2844 return ERR_PTR(err);
2845 }
2846
2847 dentry = mount_subtree(root_mnt, export_path);
2848 nfs_referral_loop_unprotect();
2849
2850 return dentry;
2851}
2852
2853static struct dentry *nfs4_try_mount(int flags, const char *dev_name,
2854 struct nfs_mount_info *mount_info)
2855{
2856 char *export_path;
2857 struct vfsmount *root_mnt;
2858 struct dentry *res;
2859 struct nfs_parsed_mount_data *data = mount_info->parsed;
2860
2861 dfprintk(MOUNT, "--> nfs4_try_mount()\n");
2862
2863 mount_info->fill_super = nfs4_fill_super;
2864
2865 export_path = data->nfs_server.export_path;
2866 data->nfs_server.export_path = "/";
2867 root_mnt = nfs_do_root_mount(&nfs4_remote_fs_type, flags, mount_info,
2868 data->nfs_server.hostname);
2869 data->nfs_server.export_path = export_path;
2870
2871 res = nfs_follow_remote_path(root_mnt, export_path);
2872
2873 dfprintk(MOUNT, "<-- nfs4_try_mount() = %ld%s\n",
2874 IS_ERR(res) ? PTR_ERR(res) : 0,
2875 IS_ERR(res) ? " [error]" : "");
2876 return res;
2877}
2878
2879static void nfs4_kill_super(struct super_block *sb)
2880{
2881 struct nfs_server *server = NFS_SB(sb);
2882
2883 dprintk("--> %s\n", __func__);
2884 nfs_super_return_all_delegations(sb);
2885 kill_anon_super(sb);
2886 nfs_fscache_release_super_cookie(sb);
2887 nfs_free_server(server);
2888 dprintk("<-- %s\n", __func__);
2889}
2890
2891/*
2892 * Clone an NFS4 server record on xdev traversal (FSID-change)
2893 */
2894static struct dentry *
2895nfs4_xdev_mount(struct file_system_type *fs_type, int flags,
2896 const char *dev_name, void *raw_data)
2897{
2898 struct nfs_mount_info mount_info = {
2899 .fill_super = nfs4_clone_super,
2900 .set_security = nfs_clone_sb_security,
2901 .cloned = raw_data,
2902 };
2903 return nfs_xdev_mount_common(&nfs4_fs_type, flags, dev_name, &mount_info);
2904}
2905
2906static struct dentry *
2907nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags,
2908 const char *dev_name, void *raw_data)
2909{
2910 struct nfs_mount_info mount_info = {
2911 .fill_super = nfs4_fill_super,
2912 .set_security = nfs_clone_sb_security,
2913 .cloned = raw_data,
2914 };
2915 struct nfs_server *server;
2916 struct dentry *mntroot = ERR_PTR(-ENOMEM);
2917
2918 dprintk("--> nfs4_referral_get_sb()\n");
2919
2920 mount_info.mntfh = nfs_alloc_fhandle();
2921 if (mount_info.cloned == NULL || mount_info.mntfh == NULL)
2922 goto out;
2923
2924 /* create a new volume representation */
2925 server = nfs4_create_referral_server(mount_info.cloned, mount_info.mntfh);
2926 if (IS_ERR(server)) {
2927 mntroot = ERR_CAST(server);
2928 goto out;
2929 }
2930
2931 mntroot = nfs_fs_mount_common(&nfs4_fs_type, server, flags, dev_name, &mount_info);
2932out:
2933 nfs_free_fhandle(mount_info.mntfh);
2934 return mntroot;
2935}
2936
2937/*
2938 * Create an NFS4 server record on referral traversal
2939 */
2940static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
2941 int flags, const char *dev_name, void *raw_data)
2942{
2943 struct nfs_clone_mount *data = raw_data;
2944 char *export_path;
2945 struct vfsmount *root_mnt;
2946 struct dentry *res;
2947
2948 dprintk("--> nfs4_referral_mount()\n");
2949
2950 export_path = data->mnt_path;
2951 data->mnt_path = "/";
2952
2953 root_mnt = nfs_do_root_mount(&nfs4_remote_referral_fs_type,
2954 flags, data, data->hostname);
2955 data->mnt_path = export_path;
2956
2957 res = nfs_follow_remote_path(root_mnt, export_path);
2958 dprintk("<-- nfs4_referral_mount() = %ld%s\n",
2959 IS_ERR(res) ? PTR_ERR(res) : 0,
2960 IS_ERR(res) ? " [error]" : "");
2961 return res;
2962}
2963
2964#endif /* CONFIG_NFS_V4 */ 2580#endif /* CONFIG_NFS_V4 */
diff --git a/fs/nfs/sysctl.c b/fs/nfs/sysctl.c
index ad4d2e787b20..6b3f2535a3ec 100644
--- a/fs/nfs/sysctl.c
+++ b/fs/nfs/sysctl.c
@@ -9,37 +9,11 @@
9#include <linux/fs.h> 9#include <linux/fs.h>
10#include <linux/sysctl.h> 10#include <linux/sysctl.h>
11#include <linux/module.h> 11#include <linux/module.h>
12#include <linux/nfs4.h>
13#include <linux/nfs_idmap.h>
14#include <linux/nfs_fs.h> 12#include <linux/nfs_fs.h>
15 13
16#include "callback.h"
17
18#ifdef CONFIG_NFS_V4
19static const int nfs_set_port_min = 0;
20static const int nfs_set_port_max = 65535;
21#endif
22static struct ctl_table_header *nfs_callback_sysctl_table; 14static struct ctl_table_header *nfs_callback_sysctl_table;
23 15
24static ctl_table nfs_cb_sysctls[] = { 16static ctl_table nfs_cb_sysctls[] = {
25#ifdef CONFIG_NFS_V4
26 {
27 .procname = "nfs_callback_tcpport",
28 .data = &nfs_callback_set_tcpport,
29 .maxlen = sizeof(int),
30 .mode = 0644,
31 .proc_handler = proc_dointvec_minmax,
32 .extra1 = (int *)&nfs_set_port_min,
33 .extra2 = (int *)&nfs_set_port_max,
34 },
35 {
36 .procname = "idmap_cache_timeout",
37 .data = &nfs_idmap_cache_timeout,
38 .maxlen = sizeof(int),
39 .mode = 0644,
40 .proc_handler = proc_dointvec_jiffies,
41 },
42#endif
43 { 17 {
44 .procname = "nfs_mountpoint_timeout", 18 .procname = "nfs_mountpoint_timeout",
45 .data = &nfs_mountpoint_expiry_timeout, 19 .data = &nfs_mountpoint_expiry_timeout,
diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c
index 3210a03342f9..13cea637eff8 100644
--- a/fs/nfs/unlink.c
+++ b/fs/nfs/unlink.c
@@ -501,7 +501,7 @@ nfs_sillyrename(struct inode *dir, struct dentry *dentry)
501 (unsigned long long)NFS_FILEID(dentry->d_inode)); 501 (unsigned long long)NFS_FILEID(dentry->d_inode));
502 502
503 /* Return delegation in anticipation of the rename */ 503 /* Return delegation in anticipation of the rename */
504 nfs_inode_return_delegation(dentry->d_inode); 504 NFS_PROTO(dentry->d_inode)->return_delegation(dentry->d_inode);
505 505
506 sdentry = NULL; 506 sdentry = NULL;
507 do { 507 do {
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 4d6861c0dc14..f312860c15d0 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -336,8 +336,10 @@ static int nfs_writepage_locked(struct page *page, struct writeback_control *wbc
336 struct nfs_pageio_descriptor pgio; 336 struct nfs_pageio_descriptor pgio;
337 int err; 337 int err;
338 338
339 nfs_pageio_init_write(&pgio, page->mapping->host, wb_priority(wbc), 339 NFS_PROTO(page->mapping->host)->write_pageio_init(&pgio,
340 &nfs_async_write_completion_ops); 340 page->mapping->host,
341 wb_priority(wbc),
342 &nfs_async_write_completion_ops);
341 err = nfs_do_writepage(page, wbc, &pgio); 343 err = nfs_do_writepage(page, wbc, &pgio);
342 nfs_pageio_complete(&pgio); 344 nfs_pageio_complete(&pgio);
343 if (err < 0) 345 if (err < 0)
@@ -380,8 +382,7 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
380 382
381 nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES); 383 nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES);
382 384
383 nfs_pageio_init_write(&pgio, inode, wb_priority(wbc), 385 NFS_PROTO(inode)->write_pageio_init(&pgio, inode, wb_priority(wbc), &nfs_async_write_completion_ops);
384 &nfs_async_write_completion_ops);
385 err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio); 386 err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio);
386 nfs_pageio_complete(&pgio); 387 nfs_pageio_complete(&pgio);
387 388
@@ -410,7 +411,7 @@ static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
410 nfs_lock_request(req); 411 nfs_lock_request(req);
411 412
412 spin_lock(&inode->i_lock); 413 spin_lock(&inode->i_lock);
413 if (!nfsi->npages && nfs_have_delegation(inode, FMODE_WRITE)) 414 if (!nfsi->npages && NFS_PROTO(inode)->have_delegation(inode, FMODE_WRITE))
414 inode->i_version++; 415 inode->i_version++;
415 set_bit(PG_MAPPED, &req->wb_flags); 416 set_bit(PG_MAPPED, &req->wb_flags);
416 SetPagePrivate(req->wb_page); 417 SetPagePrivate(req->wb_page);
@@ -620,7 +621,7 @@ static void nfs_write_completion(struct nfs_pgio_header *hdr)
620 goto next; 621 goto next;
621 } 622 }
622 if (test_bit(NFS_IOHDR_NEED_COMMIT, &hdr->flags)) { 623 if (test_bit(NFS_IOHDR_NEED_COMMIT, &hdr->flags)) {
623 memcpy(&req->wb_verf, hdr->verf, sizeof(req->wb_verf)); 624 memcpy(&req->wb_verf, &hdr->verf->verifier, sizeof(req->wb_verf));
624 nfs_mark_request_commit(req, hdr->lseg, &cinfo); 625 nfs_mark_request_commit(req, hdr->lseg, &cinfo);
625 goto next; 626 goto next;
626 } 627 }
@@ -1202,7 +1203,7 @@ static const struct nfs_pageio_ops nfs_pageio_write_ops = {
1202 .pg_doio = nfs_generic_pg_writepages, 1203 .pg_doio = nfs_generic_pg_writepages,
1203}; 1204};
1204 1205
1205void nfs_pageio_init_write_mds(struct nfs_pageio_descriptor *pgio, 1206void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
1206 struct inode *inode, int ioflags, 1207 struct inode *inode, int ioflags,
1207 const struct nfs_pgio_completion_ops *compl_ops) 1208 const struct nfs_pgio_completion_ops *compl_ops)
1208{ 1209{
@@ -1217,13 +1218,6 @@ void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio)
1217} 1218}
1218EXPORT_SYMBOL_GPL(nfs_pageio_reset_write_mds); 1219EXPORT_SYMBOL_GPL(nfs_pageio_reset_write_mds);
1219 1220
1220void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
1221 struct inode *inode, int ioflags,
1222 const struct nfs_pgio_completion_ops *compl_ops)
1223{
1224 if (!pnfs_pageio_init_write(pgio, inode, ioflags, compl_ops))
1225 nfs_pageio_init_write_mds(pgio, inode, ioflags, compl_ops);
1226}
1227 1221
1228void nfs_write_prepare(struct rpc_task *task, void *calldata) 1222void nfs_write_prepare(struct rpc_task *task, void *calldata)
1229{ 1223{
@@ -1547,7 +1541,7 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data)
1547 1541
1548 /* Okay, COMMIT succeeded, apparently. Check the verifier 1542 /* Okay, COMMIT succeeded, apparently. Check the verifier
1549 * returned by the server against all stored verfs. */ 1543 * returned by the server against all stored verfs. */
1550 if (!memcmp(req->wb_verf.verifier, data->verf.verifier, sizeof(data->verf.verifier))) { 1544 if (!memcmp(&req->wb_verf, &data->verf.verifier, sizeof(req->wb_verf))) {
1551 /* We have a match */ 1545 /* We have a match */
1552 nfs_inode_remove_request(req); 1546 nfs_inode_remove_request(req);
1553 dprintk(" OK\n"); 1547 dprintk(" OK\n");
@@ -1677,9 +1671,14 @@ static int nfs_commit_unstable_pages(struct inode *inode, struct writeback_contr
1677 1671
1678int nfs_write_inode(struct inode *inode, struct writeback_control *wbc) 1672int nfs_write_inode(struct inode *inode, struct writeback_control *wbc)
1679{ 1673{
1680 int ret; 1674 return nfs_commit_unstable_pages(inode, wbc);
1675}
1676
1677#ifdef CONFIG_NFS_V4
1678int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc)
1679{
1680 int ret = nfs_write_inode(inode, wbc);
1681 1681
1682 ret = nfs_commit_unstable_pages(inode, wbc);
1683 if (ret >= 0 && test_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags)) { 1682 if (ret >= 0 && test_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags)) {
1684 int status; 1683 int status;
1685 bool sync = true; 1684 bool sync = true;
@@ -1693,6 +1692,7 @@ int nfs_write_inode(struct inode *inode, struct writeback_control *wbc)
1693 } 1692 }
1694 return ret; 1693 return ret;
1695} 1694}
1695#endif
1696 1696
1697/* 1697/*
1698 * flush the inode to disk. 1698 * flush the inode to disk.
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index b23cfc120edb..4b6043c20f77 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -427,10 +427,6 @@ extern __be32 root_nfs_parse_addr(char *name); /*__init*/
427/* 427/*
428 * linux/fs/nfs/file.c 428 * linux/fs/nfs/file.c
429 */ 429 */
430extern const struct inode_operations nfs_file_inode_operations;
431#ifdef CONFIG_NFS_V3
432extern const struct inode_operations nfs3_file_inode_operations;
433#endif /* CONFIG_NFS_V3 */
434extern const struct file_operations nfs_file_operations; 430extern const struct file_operations nfs_file_operations;
435#ifdef CONFIG_NFS_V4 431#ifdef CONFIG_NFS_V4
436extern const struct file_operations nfs4_file_operations; 432extern const struct file_operations nfs4_file_operations;
@@ -485,10 +481,6 @@ extern ssize_t nfs_file_direct_write(struct kiocb *iocb,
485/* 481/*
486 * linux/fs/nfs/dir.c 482 * linux/fs/nfs/dir.c
487 */ 483 */
488extern const struct inode_operations nfs_dir_inode_operations;
489#ifdef CONFIG_NFS_V3
490extern const struct inode_operations nfs3_dir_inode_operations;
491#endif /* CONFIG_NFS_V3 */
492extern const struct file_operations nfs_dir_operations; 484extern const struct file_operations nfs_dir_operations;
493extern const struct dentry_operations nfs_dentry_operations; 485extern const struct dentry_operations nfs_dentry_operations;
494 486
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index f58325a1d8fb..65327652c61a 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -69,10 +69,9 @@ struct nfs_client {
69 struct idmap * cl_idmap; 69 struct idmap * cl_idmap;
70 70
71 /* Our own IP address, as a null-terminated string. 71 /* Our own IP address, as a null-terminated string.
72 * This is used to generate the clientid, and the callback address. 72 * This is used to generate the mv0 callback address.
73 */ 73 */
74 char cl_ipaddr[48]; 74 char cl_ipaddr[48];
75 unsigned char cl_id_uniquifier;
76 u32 cl_cb_ident; /* v4.0 callback identifier */ 75 u32 cl_cb_ident; /* v4.0 callback identifier */
77 const struct nfs4_minor_version_ops *cl_mvops; 76 const struct nfs4_minor_version_ops *cl_mvops;
78 77
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h
index 88d166b555e8..880805774f9f 100644
--- a/include/linux/nfs_page.h
+++ b/include/linux/nfs_page.h
@@ -42,7 +42,7 @@ struct nfs_page {
42 wb_bytes; /* Length of request */ 42 wb_bytes; /* Length of request */
43 struct kref wb_kref; /* reference count */ 43 struct kref wb_kref; /* reference count */
44 unsigned long wb_flags; 44 unsigned long wb_flags;
45 struct nfs_writeverf wb_verf; /* Commit cookie */ 45 struct nfs_write_verifier wb_verf; /* Commit cookie */
46}; 46};
47 47
48struct nfs_pageio_descriptor; 48struct nfs_pageio_descriptor;
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index d3b7c18b18f4..0e181c2320b7 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -514,9 +514,13 @@ struct nfs_writeargs {
514 struct nfs4_sequence_args seq_args; 514 struct nfs4_sequence_args seq_args;
515}; 515};
516 516
517struct nfs_write_verifier {
518 char data[8];
519};
520
517struct nfs_writeverf { 521struct nfs_writeverf {
522 struct nfs_write_verifier verifier;
518 enum nfs3_stable_how committed; 523 enum nfs3_stable_how committed;
519 __be32 verifier[2];
520}; 524};
521 525
522struct nfs_writeres { 526struct nfs_writeres {
@@ -1349,6 +1353,8 @@ struct nfs_renamedata {
1349struct nfs_access_entry; 1353struct nfs_access_entry;
1350struct nfs_client; 1354struct nfs_client;
1351struct rpc_timeout; 1355struct rpc_timeout;
1356struct nfs_client_initdata;
1357struct nfs_pageio_descriptor;
1352 1358
1353/* 1359/*
1354 * RPC procedure vector for NFSv2/NFSv3 demuxing 1360 * RPC procedure vector for NFSv2/NFSv3 demuxing
@@ -1402,9 +1408,13 @@ struct nfs_rpc_ops {
1402 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *); 1408 int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1403 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int); 1409 int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1404 void (*read_setup) (struct nfs_read_data *, struct rpc_message *); 1410 void (*read_setup) (struct nfs_read_data *, struct rpc_message *);
1411 void (*read_pageio_init)(struct nfs_pageio_descriptor *, struct inode *,
1412 const struct nfs_pgio_completion_ops *);
1405 void (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *); 1413 void (*read_rpc_prepare)(struct rpc_task *, struct nfs_read_data *);
1406 int (*read_done) (struct rpc_task *, struct nfs_read_data *); 1414 int (*read_done) (struct rpc_task *, struct nfs_read_data *);
1407 void (*write_setup) (struct nfs_write_data *, struct rpc_message *); 1415 void (*write_setup) (struct nfs_write_data *, struct rpc_message *);
1416 void (*write_pageio_init)(struct nfs_pageio_descriptor *, struct inode *, int,
1417 const struct nfs_pgio_completion_ops *);
1408 void (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *); 1418 void (*write_rpc_prepare)(struct rpc_task *, struct nfs_write_data *);
1409 int (*write_done) (struct rpc_task *, struct nfs_write_data *); 1419 int (*write_done) (struct rpc_task *, struct nfs_write_data *);
1410 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *); 1420 void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
@@ -1418,9 +1428,13 @@ struct nfs_rpc_ops {
1418 struct nfs_open_context *ctx, 1428 struct nfs_open_context *ctx,
1419 int open_flags, 1429 int open_flags,
1420 struct iattr *iattr); 1430 struct iattr *iattr);
1431 int (*have_delegation)(struct inode *, fmode_t);
1432 int (*return_delegation)(struct inode *);
1433 struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1421 struct nfs_client * 1434 struct nfs_client *
1422 (*init_client) (struct nfs_client *, const struct rpc_timeout *, 1435 (*init_client) (struct nfs_client *, const struct rpc_timeout *,
1423 const char *, rpc_authflavor_t); 1436 const char *, rpc_authflavor_t);
1437 void (*free_client) (struct nfs_client *);
1424}; 1438};
1425 1439
1426/* 1440/*
diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index 492a36d72829..f25ba922baaf 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -101,6 +101,7 @@ struct rpc_authops {
101 struct rpc_cred * (*crcreate)(struct rpc_auth*, struct auth_cred *, int); 101 struct rpc_cred * (*crcreate)(struct rpc_auth*, struct auth_cred *, int);
102 int (*pipes_create)(struct rpc_auth *); 102 int (*pipes_create)(struct rpc_auth *);
103 void (*pipes_destroy)(struct rpc_auth *); 103 void (*pipes_destroy)(struct rpc_auth *);
104 int (*list_pseudoflavors)(rpc_authflavor_t *, int);
104}; 105};
105 106
106struct rpc_credops { 107struct rpc_credops {
@@ -135,6 +136,7 @@ int rpcauth_register(const struct rpc_authops *);
135int rpcauth_unregister(const struct rpc_authops *); 136int rpcauth_unregister(const struct rpc_authops *);
136struct rpc_auth * rpcauth_create(rpc_authflavor_t, struct rpc_clnt *); 137struct rpc_auth * rpcauth_create(rpc_authflavor_t, struct rpc_clnt *);
137void rpcauth_release(struct rpc_auth *); 138void rpcauth_release(struct rpc_auth *);
139int rpcauth_list_flavors(rpc_authflavor_t *, int);
138struct rpc_cred * rpcauth_lookup_credcache(struct rpc_auth *, struct auth_cred *, int); 140struct rpc_cred * rpcauth_lookup_credcache(struct rpc_auth *, struct auth_cred *, int);
139void rpcauth_init_cred(struct rpc_cred *, const struct auth_cred *, struct rpc_auth *, const struct rpc_credops *); 141void rpcauth_init_cred(struct rpc_cred *, const struct auth_cred *, struct rpc_auth *, const struct rpc_credops *);
140struct rpc_cred * rpcauth_lookupcred(struct rpc_auth *, int); 142struct rpc_cred * rpcauth_lookupcred(struct rpc_auth *, int);
diff --git a/include/linux/sunrpc/gss_api.h b/include/linux/sunrpc/gss_api.h
index 332da61cf8b7..a19e2547ae6a 100644
--- a/include/linux/sunrpc/gss_api.h
+++ b/include/linux/sunrpc/gss_api.h
@@ -14,6 +14,7 @@
14 14
15#ifdef __KERNEL__ 15#ifdef __KERNEL__
16#include <linux/sunrpc/xdr.h> 16#include <linux/sunrpc/xdr.h>
17#include <linux/sunrpc/msg_prot.h>
17#include <linux/uio.h> 18#include <linux/uio.h>
18 19
19/* The mechanism-independent gss-api context: */ 20/* The mechanism-independent gss-api context: */
@@ -127,7 +128,7 @@ struct gss_api_mech *gss_mech_get_by_name(const char *);
127struct gss_api_mech *gss_mech_get_by_pseudoflavor(u32); 128struct gss_api_mech *gss_mech_get_by_pseudoflavor(u32);
128 129
129/* Fill in an array with a list of supported pseudoflavors */ 130/* Fill in an array with a list of supported pseudoflavors */
130int gss_mech_list_pseudoflavors(u32 *); 131int gss_mech_list_pseudoflavors(rpc_authflavor_t *, int);
131 132
132/* Just increments the mechanism's reference count and returns its input: */ 133/* Just increments the mechanism's reference count and returns its input: */
133struct gss_api_mech * gss_mech_get(struct gss_api_mech *); 134struct gss_api_mech * gss_mech_get(struct gss_api_mech *);
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index af70af333546..63988990bd36 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -104,8 +104,6 @@ __be32 *xdr_decode_string_inplace(__be32 *p, char **sp, unsigned int *lenp,
104__be32 *xdr_encode_netobj(__be32 *p, const struct xdr_netobj *); 104__be32 *xdr_encode_netobj(__be32 *p, const struct xdr_netobj *);
105__be32 *xdr_decode_netobj(__be32 *p, struct xdr_netobj *); 105__be32 *xdr_decode_netobj(__be32 *p, struct xdr_netobj *);
106 106
107void xdr_encode_pages(struct xdr_buf *, struct page **, unsigned int,
108 unsigned int);
109void xdr_inline_pages(struct xdr_buf *, unsigned int, 107void xdr_inline_pages(struct xdr_buf *, unsigned int,
110 struct page **, unsigned int, unsigned int); 108 struct page **, unsigned int, unsigned int);
111void xdr_terminate_string(struct xdr_buf *, const u32); 109void xdr_terminate_string(struct xdr_buf *, const u32);
@@ -205,6 +203,7 @@ struct xdr_stream {
205 struct kvec *iov; /* pointer to the current kvec */ 203 struct kvec *iov; /* pointer to the current kvec */
206 struct kvec scratch; /* Scratch buffer */ 204 struct kvec scratch; /* Scratch buffer */
207 struct page **page_ptr; /* pointer to the current page */ 205 struct page **page_ptr; /* pointer to the current page */
206 unsigned int nwords; /* Remaining decode buffer length */
208}; 207};
209 208
210/* 209/*
@@ -217,12 +216,13 @@ extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32
217extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes); 216extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes);
218extern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages, 217extern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages,
219 unsigned int base, unsigned int len); 218 unsigned int base, unsigned int len);
219extern unsigned int xdr_stream_pos(const struct xdr_stream *xdr);
220extern void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p); 220extern void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p);
221extern void xdr_init_decode_pages(struct xdr_stream *xdr, struct xdr_buf *buf, 221extern void xdr_init_decode_pages(struct xdr_stream *xdr, struct xdr_buf *buf,
222 struct page **pages, unsigned int len); 222 struct page **pages, unsigned int len);
223extern void xdr_set_scratch_buffer(struct xdr_stream *xdr, void *buf, size_t buflen); 223extern void xdr_set_scratch_buffer(struct xdr_stream *xdr, void *buf, size_t buflen);
224extern __be32 *xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes); 224extern __be32 *xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes);
225extern void xdr_read_pages(struct xdr_stream *xdr, unsigned int len); 225extern unsigned int xdr_read_pages(struct xdr_stream *xdr, unsigned int len);
226extern void xdr_enter_page(struct xdr_stream *xdr, unsigned int len); 226extern void xdr_enter_page(struct xdr_stream *xdr, unsigned int len);
227extern int xdr_process_buf(struct xdr_buf *buf, unsigned int offset, unsigned int len, int (*actor)(struct scatterlist *, void *), void *data); 227extern int xdr_process_buf(struct xdr_buf *buf, unsigned int offset, unsigned int len, int (*actor)(struct scatterlist *, void *), void *data);
228 228
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 727e506cacda..b5c067bccc45 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -13,6 +13,7 @@
13#include <linux/errno.h> 13#include <linux/errno.h>
14#include <linux/hash.h> 14#include <linux/hash.h>
15#include <linux/sunrpc/clnt.h> 15#include <linux/sunrpc/clnt.h>
16#include <linux/sunrpc/gss_api.h>
16#include <linux/spinlock.h> 17#include <linux/spinlock.h>
17 18
18#ifdef RPC_DEBUG 19#ifdef RPC_DEBUG
@@ -122,6 +123,59 @@ rpcauth_unregister(const struct rpc_authops *ops)
122} 123}
123EXPORT_SYMBOL_GPL(rpcauth_unregister); 124EXPORT_SYMBOL_GPL(rpcauth_unregister);
124 125
126/**
127 * rpcauth_list_flavors - discover registered flavors and pseudoflavors
128 * @array: array to fill in
129 * @size: size of "array"
130 *
131 * Returns the number of array items filled in, or a negative errno.
132 *
133 * The returned array is not sorted by any policy. Callers should not
134 * rely on the order of the items in the returned array.
135 */
136int
137rpcauth_list_flavors(rpc_authflavor_t *array, int size)
138{
139 rpc_authflavor_t flavor;
140 int result = 0;
141
142 spin_lock(&rpc_authflavor_lock);
143 for (flavor = 0; flavor < RPC_AUTH_MAXFLAVOR; flavor++) {
144 const struct rpc_authops *ops = auth_flavors[flavor];
145 rpc_authflavor_t pseudos[4];
146 int i, len;
147
148 if (result >= size) {
149 result = -ENOMEM;
150 break;
151 }
152
153 if (ops == NULL)
154 continue;
155 if (ops->list_pseudoflavors == NULL) {
156 array[result++] = ops->au_flavor;
157 continue;
158 }
159 len = ops->list_pseudoflavors(pseudos, ARRAY_SIZE(pseudos));
160 if (len < 0) {
161 result = len;
162 break;
163 }
164 for (i = 0; i < len; i++) {
165 if (result >= size) {
166 result = -ENOMEM;
167 break;
168 }
169 array[result++] = pseudos[i];
170 }
171 }
172 spin_unlock(&rpc_authflavor_lock);
173
174 dprintk("RPC: %s returns %d\n", __func__, result);
175 return result;
176}
177EXPORT_SYMBOL_GPL(rpcauth_list_flavors);
178
125struct rpc_auth * 179struct rpc_auth *
126rpcauth_create(rpc_authflavor_t pseudoflavor, struct rpc_clnt *clnt) 180rpcauth_create(rpc_authflavor_t pseudoflavor, struct rpc_clnt *clnt)
127{ 181{
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index d3ad81f8da5b..34c522021004 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -1619,6 +1619,7 @@ static const struct rpc_authops authgss_ops = {
1619 .crcreate = gss_create_cred, 1619 .crcreate = gss_create_cred,
1620 .pipes_create = gss_pipes_dentries_create, 1620 .pipes_create = gss_pipes_dentries_create,
1621 .pipes_destroy = gss_pipes_dentries_destroy, 1621 .pipes_destroy = gss_pipes_dentries_destroy,
1622 .list_pseudoflavors = gss_mech_list_pseudoflavors,
1622}; 1623};
1623 1624
1624static const struct rpc_credops gss_credops = { 1625static const struct rpc_credops gss_credops = {
diff --git a/net/sunrpc/auth_gss/gss_mech_switch.c b/net/sunrpc/auth_gss/gss_mech_switch.c
index 782bfe1b6465..b174fcd9ff4c 100644
--- a/net/sunrpc/auth_gss/gss_mech_switch.c
+++ b/net/sunrpc/auth_gss/gss_mech_switch.c
@@ -239,14 +239,28 @@ gss_mech_get_by_pseudoflavor(u32 pseudoflavor)
239 239
240EXPORT_SYMBOL_GPL(gss_mech_get_by_pseudoflavor); 240EXPORT_SYMBOL_GPL(gss_mech_get_by_pseudoflavor);
241 241
242int gss_mech_list_pseudoflavors(rpc_authflavor_t *array_ptr) 242/**
243 * gss_mech_list_pseudoflavors - Discover registered GSS pseudoflavors
244 * @array: array to fill in
245 * @size: size of "array"
246 *
247 * Returns the number of array items filled in, or a negative errno.
248 *
249 * The returned array is not sorted by any policy. Callers should not
250 * rely on the order of the items in the returned array.
251 */
252int gss_mech_list_pseudoflavors(rpc_authflavor_t *array_ptr, int size)
243{ 253{
244 struct gss_api_mech *pos = NULL; 254 struct gss_api_mech *pos = NULL;
245 int j, i = 0; 255 int j, i = 0;
246 256
247 spin_lock(&registered_mechs_lock); 257 spin_lock(&registered_mechs_lock);
248 list_for_each_entry(pos, &registered_mechs, gm_list) { 258 list_for_each_entry(pos, &registered_mechs, gm_list) {
249 for (j=0; j < pos->gm_pf_num; j++) { 259 for (j = 0; j < pos->gm_pf_num; j++) {
260 if (i >= size) {
261 spin_unlock(&registered_mechs_lock);
262 return -ENOMEM;
263 }
250 array_ptr[i++] = pos->gm_pfs[j].pseudoflavor; 264 array_ptr[i++] = pos->gm_pfs[j].pseudoflavor;
251 } 265 }
252 } 266 }
@@ -254,8 +268,6 @@ int gss_mech_list_pseudoflavors(rpc_authflavor_t *array_ptr)
254 return i; 268 return i;
255} 269}
256 270
257EXPORT_SYMBOL_GPL(gss_mech_list_pseudoflavors);
258
259u32 271u32
260gss_svc_to_pseudoflavor(struct gss_api_mech *gm, u32 service) 272gss_svc_to_pseudoflavor(struct gss_api_mech *gm, u32 service)
261{ 273{
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 00eb859b7de5..b05df36692ff 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1844,12 +1844,13 @@ call_timeout(struct rpc_task *task)
1844 return; 1844 return;
1845 } 1845 }
1846 if (RPC_IS_SOFT(task)) { 1846 if (RPC_IS_SOFT(task)) {
1847 if (clnt->cl_chatty) 1847 if (clnt->cl_chatty) {
1848 rcu_read_lock(); 1848 rcu_read_lock();
1849 printk(KERN_NOTICE "%s: server %s not responding, timed out\n", 1849 printk(KERN_NOTICE "%s: server %s not responding, timed out\n",
1850 clnt->cl_protname, 1850 clnt->cl_protname,
1851 rcu_dereference(clnt->cl_xprt)->servername); 1851 rcu_dereference(clnt->cl_xprt)->servername);
1852 rcu_read_unlock(); 1852 rcu_read_unlock();
1853 }
1853 if (task->tk_flags & RPC_TASK_TIMEOUT) 1854 if (task->tk_flags & RPC_TASK_TIMEOUT)
1854 rpc_exit(task, -ETIMEDOUT); 1855 rpc_exit(task, -ETIMEDOUT);
1855 else 1856 else
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index 0cf165580d8d..0afba1b4b656 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -129,34 +129,6 @@ xdr_terminate_string(struct xdr_buf *buf, const u32 len)
129EXPORT_SYMBOL_GPL(xdr_terminate_string); 129EXPORT_SYMBOL_GPL(xdr_terminate_string);
130 130
131void 131void
132xdr_encode_pages(struct xdr_buf *xdr, struct page **pages, unsigned int base,
133 unsigned int len)
134{
135 struct kvec *tail = xdr->tail;
136 u32 *p;
137
138 xdr->pages = pages;
139 xdr->page_base = base;
140 xdr->page_len = len;
141
142 p = (u32 *)xdr->head[0].iov_base + XDR_QUADLEN(xdr->head[0].iov_len);
143 tail->iov_base = p;
144 tail->iov_len = 0;
145
146 if (len & 3) {
147 unsigned int pad = 4 - (len & 3);
148
149 *p = 0;
150 tail->iov_base = (char *)p + (len & 3);
151 tail->iov_len = pad;
152 len += pad;
153 }
154 xdr->buflen += len;
155 xdr->len += len;
156}
157EXPORT_SYMBOL_GPL(xdr_encode_pages);
158
159void
160xdr_inline_pages(struct xdr_buf *xdr, unsigned int offset, 132xdr_inline_pages(struct xdr_buf *xdr, unsigned int offset,
161 struct page **pages, unsigned int base, unsigned int len) 133 struct page **pages, unsigned int base, unsigned int len)
162{ 134{
@@ -457,6 +429,16 @@ xdr_shift_buf(struct xdr_buf *buf, size_t len)
457EXPORT_SYMBOL_GPL(xdr_shift_buf); 429EXPORT_SYMBOL_GPL(xdr_shift_buf);
458 430
459/** 431/**
432 * xdr_stream_pos - Return the current offset from the start of the xdr_stream
433 * @xdr: pointer to struct xdr_stream
434 */
435unsigned int xdr_stream_pos(const struct xdr_stream *xdr)
436{
437 return (unsigned int)(XDR_QUADLEN(xdr->buf->len) - xdr->nwords) << 2;
438}
439EXPORT_SYMBOL_GPL(xdr_stream_pos);
440
441/**
460 * xdr_init_encode - Initialize a struct xdr_stream for sending data. 442 * xdr_init_encode - Initialize a struct xdr_stream for sending data.
461 * @xdr: pointer to xdr_stream struct 443 * @xdr: pointer to xdr_stream struct
462 * @buf: pointer to XDR buffer in which to encode data 444 * @buf: pointer to XDR buffer in which to encode data
@@ -556,13 +538,11 @@ void xdr_write_pages(struct xdr_stream *xdr, struct page **pages, unsigned int b
556EXPORT_SYMBOL_GPL(xdr_write_pages); 538EXPORT_SYMBOL_GPL(xdr_write_pages);
557 539
558static void xdr_set_iov(struct xdr_stream *xdr, struct kvec *iov, 540static void xdr_set_iov(struct xdr_stream *xdr, struct kvec *iov,
559 __be32 *p, unsigned int len) 541 unsigned int len)
560{ 542{
561 if (len > iov->iov_len) 543 if (len > iov->iov_len)
562 len = iov->iov_len; 544 len = iov->iov_len;
563 if (p == NULL) 545 xdr->p = (__be32*)iov->iov_base;
564 p = (__be32*)iov->iov_base;
565 xdr->p = p;
566 xdr->end = (__be32*)(iov->iov_base + len); 546 xdr->end = (__be32*)(iov->iov_base + len);
567 xdr->iov = iov; 547 xdr->iov = iov;
568 xdr->page_ptr = NULL; 548 xdr->page_ptr = NULL;
@@ -609,7 +589,7 @@ static void xdr_set_next_page(struct xdr_stream *xdr)
609 newbase -= xdr->buf->page_base; 589 newbase -= xdr->buf->page_base;
610 590
611 if (xdr_set_page_base(xdr, newbase, PAGE_SIZE) < 0) 591 if (xdr_set_page_base(xdr, newbase, PAGE_SIZE) < 0)
612 xdr_set_iov(xdr, xdr->buf->tail, NULL, xdr->buf->len); 592 xdr_set_iov(xdr, xdr->buf->tail, xdr->buf->len);
613} 593}
614 594
615static bool xdr_set_next_buffer(struct xdr_stream *xdr) 595static bool xdr_set_next_buffer(struct xdr_stream *xdr)
@@ -618,7 +598,7 @@ static bool xdr_set_next_buffer(struct xdr_stream *xdr)
618 xdr_set_next_page(xdr); 598 xdr_set_next_page(xdr);
619 else if (xdr->iov == xdr->buf->head) { 599 else if (xdr->iov == xdr->buf->head) {
620 if (xdr_set_page_base(xdr, 0, PAGE_SIZE) < 0) 600 if (xdr_set_page_base(xdr, 0, PAGE_SIZE) < 0)
621 xdr_set_iov(xdr, xdr->buf->tail, NULL, xdr->buf->len); 601 xdr_set_iov(xdr, xdr->buf->tail, xdr->buf->len);
622 } 602 }
623 return xdr->p != xdr->end; 603 return xdr->p != xdr->end;
624} 604}
@@ -634,10 +614,15 @@ void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p)
634 xdr->buf = buf; 614 xdr->buf = buf;
635 xdr->scratch.iov_base = NULL; 615 xdr->scratch.iov_base = NULL;
636 xdr->scratch.iov_len = 0; 616 xdr->scratch.iov_len = 0;
617 xdr->nwords = XDR_QUADLEN(buf->len);
637 if (buf->head[0].iov_len != 0) 618 if (buf->head[0].iov_len != 0)
638 xdr_set_iov(xdr, buf->head, p, buf->len); 619 xdr_set_iov(xdr, buf->head, buf->len);
639 else if (buf->page_len != 0) 620 else if (buf->page_len != 0)
640 xdr_set_page_base(xdr, 0, buf->len); 621 xdr_set_page_base(xdr, 0, buf->len);
622 if (p != NULL && p > xdr->p && xdr->end >= p) {
623 xdr->nwords -= p - xdr->p;
624 xdr->p = p;
625 }
641} 626}
642EXPORT_SYMBOL_GPL(xdr_init_decode); 627EXPORT_SYMBOL_GPL(xdr_init_decode);
643 628
@@ -662,12 +647,14 @@ EXPORT_SYMBOL_GPL(xdr_init_decode_pages);
662 647
663static __be32 * __xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes) 648static __be32 * __xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes)
664{ 649{
650 unsigned int nwords = XDR_QUADLEN(nbytes);
665 __be32 *p = xdr->p; 651 __be32 *p = xdr->p;
666 __be32 *q = p + XDR_QUADLEN(nbytes); 652 __be32 *q = p + nwords;
667 653
668 if (unlikely(q > xdr->end || q < p)) 654 if (unlikely(nwords > xdr->nwords || q > xdr->end || q < p))
669 return NULL; 655 return NULL;
670 xdr->p = q; 656 xdr->p = q;
657 xdr->nwords -= nwords;
671 return p; 658 return p;
672} 659}
673 660
@@ -734,6 +721,31 @@ __be32 * xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes)
734} 721}
735EXPORT_SYMBOL_GPL(xdr_inline_decode); 722EXPORT_SYMBOL_GPL(xdr_inline_decode);
736 723
724static unsigned int xdr_align_pages(struct xdr_stream *xdr, unsigned int len)
725{
726 struct xdr_buf *buf = xdr->buf;
727 struct kvec *iov;
728 unsigned int nwords = XDR_QUADLEN(len);
729 unsigned int cur = xdr_stream_pos(xdr);
730
731 if (xdr->nwords == 0)
732 return 0;
733 if (nwords > xdr->nwords) {
734 nwords = xdr->nwords;
735 len = nwords << 2;
736 }
737 /* Realign pages to current pointer position */
738 iov = buf->head;
739 if (iov->iov_len > cur)
740 xdr_shrink_bufhead(buf, iov->iov_len - cur);
741
742 /* Truncate page data and move it into the tail */
743 if (buf->page_len > len)
744 xdr_shrink_pagelen(buf, buf->page_len - len);
745 xdr->nwords = XDR_QUADLEN(buf->len - cur);
746 return len;
747}
748
737/** 749/**
738 * xdr_read_pages - Ensure page-based XDR data to decode is aligned at current pointer position 750 * xdr_read_pages - Ensure page-based XDR data to decode is aligned at current pointer position
739 * @xdr: pointer to xdr_stream struct 751 * @xdr: pointer to xdr_stream struct
@@ -742,39 +754,37 @@ EXPORT_SYMBOL_GPL(xdr_inline_decode);
742 * Moves data beyond the current pointer position from the XDR head[] buffer 754 * Moves data beyond the current pointer position from the XDR head[] buffer
743 * into the page list. Any data that lies beyond current position + "len" 755 * into the page list. Any data that lies beyond current position + "len"
744 * bytes is moved into the XDR tail[]. 756 * bytes is moved into the XDR tail[].
757 *
758 * Returns the number of XDR encoded bytes now contained in the pages
745 */ 759 */
746void xdr_read_pages(struct xdr_stream *xdr, unsigned int len) 760unsigned int xdr_read_pages(struct xdr_stream *xdr, unsigned int len)
747{ 761{
748 struct xdr_buf *buf = xdr->buf; 762 struct xdr_buf *buf = xdr->buf;
749 struct kvec *iov; 763 struct kvec *iov;
750 ssize_t shift; 764 unsigned int nwords;
751 unsigned int end; 765 unsigned int end;
752 int padding; 766 unsigned int padding;
753 767
754 /* Realign pages to current pointer position */ 768 len = xdr_align_pages(xdr, len);
755 iov = buf->head; 769 if (len == 0)
756 shift = iov->iov_len + (char *)iov->iov_base - (char *)xdr->p; 770 return 0;
757 if (shift > 0) 771 nwords = XDR_QUADLEN(len);
758 xdr_shrink_bufhead(buf, shift); 772 padding = (nwords << 2) - len;
759
760 /* Truncate page data and move it into the tail */
761 if (buf->page_len > len)
762 xdr_shrink_pagelen(buf, buf->page_len - len);
763 padding = (XDR_QUADLEN(len) << 2) - len;
764 xdr->iov = iov = buf->tail; 773 xdr->iov = iov = buf->tail;
765 /* Compute remaining message length. */ 774 /* Compute remaining message length. */
766 end = iov->iov_len; 775 end = ((xdr->nwords - nwords) << 2) + padding;
767 shift = buf->buflen - buf->len; 776 if (end > iov->iov_len)
768 if (shift < end) 777 end = iov->iov_len;
769 end -= shift; 778
770 else if (shift > 0)
771 end = 0;
772 /* 779 /*
773 * Position current pointer at beginning of tail, and 780 * Position current pointer at beginning of tail, and
774 * set remaining message length. 781 * set remaining message length.
775 */ 782 */
776 xdr->p = (__be32 *)((char *)iov->iov_base + padding); 783 xdr->p = (__be32 *)((char *)iov->iov_base + padding);
777 xdr->end = (__be32 *)((char *)iov->iov_base + end); 784 xdr->end = (__be32 *)((char *)iov->iov_base + end);
785 xdr->page_ptr = NULL;
786 xdr->nwords = XDR_QUADLEN(end - padding);
787 return len;
778} 788}
779EXPORT_SYMBOL_GPL(xdr_read_pages); 789EXPORT_SYMBOL_GPL(xdr_read_pages);
780 790
@@ -790,12 +800,13 @@ EXPORT_SYMBOL_GPL(xdr_read_pages);
790 */ 800 */
791void xdr_enter_page(struct xdr_stream *xdr, unsigned int len) 801void xdr_enter_page(struct xdr_stream *xdr, unsigned int len)
792{ 802{
793 xdr_read_pages(xdr, len); 803 len = xdr_align_pages(xdr, len);
794 /* 804 /*
795 * Position current pointer at beginning of tail, and 805 * Position current pointer at beginning of tail, and
796 * set remaining message length. 806 * set remaining message length.
797 */ 807 */
798 xdr_set_page_base(xdr, 0, len); 808 if (len != 0)
809 xdr_set_page_base(xdr, 0, len);
799} 810}
800EXPORT_SYMBOL_GPL(xdr_enter_page); 811EXPORT_SYMBOL_GPL(xdr_enter_page);
801 812
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-03 17:06:37 -0500