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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-06 16:25:56 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-06 16:25:56 -0400
commita63856252d2112e7c452696037a86ceb12f47f80 (patch)
treeb1ad03fe441349069f80e58de425b3f72af9e5b7 /fs
parentb24241a09208874d5d770bee30791daae41ad762 (diff)
parent04826f43d4f0a4d56423eb8abb9f2ec9987df5b5 (diff)
Merge branch 'for-2.6.30' of git://linux-nfs.org/~bfields/linux
* 'for-2.6.30' of git://linux-nfs.org/~bfields/linux: (81 commits) nfsd41: define nfsd4_set_statp as noop for !CONFIG_NFSD_V4 nfsd41: define NFSD_DRC_SIZE_SHIFT in set_max_drc nfsd41: Documentation/filesystems/nfs41-server.txt nfsd41: CREATE_EXCLUSIVE4_1 nfsd41: SUPPATTR_EXCLCREAT attribute nfsd41: support for 3-word long attribute bitmask nfsd: dynamically skip encoded fattr bitmap in _nfsd4_verify nfsd41: pass writable attrs mask to nfsd4_decode_fattr nfsd41: provide support for minor version 1 at rpc level nfsd41: control nfsv4.1 svc via /proc/fs/nfsd/versions nfsd41: add OPEN4_SHARE_ACCESS_WANT nfs4_stateid bmap nfsd41: access_valid nfsd41: clientid handling nfsd41: check encode size for sessions maxresponse cached nfsd41: stateid handling nfsd: pass nfsd4_compound_state* to nfs4_preprocess_{state,seq}id_op nfsd41: destroy_session operation nfsd41: non-page DRC for solo sequence responses nfsd41: Add a create session replay cache nfsd41: create_session operation ...
Diffstat (limited to 'fs')
-rw-r--r--fs/lockd/svclock.c13
-rw-r--r--fs/nfsd/Kconfig1
-rw-r--r--fs/nfsd/nfs3proc.c10
-rw-r--r--fs/nfsd/nfs4callback.c47
-rw-r--r--fs/nfsd/nfs4proc.c246
-rw-r--r--fs/nfsd/nfs4recover.c74
-rw-r--r--fs/nfsd/nfs4state.c1196
-rw-r--r--fs/nfsd/nfs4xdr.c633
-rw-r--r--fs/nfsd/nfsctl.c38
-rw-r--r--fs/nfsd/nfsproc.c3
-rw-r--r--fs/nfsd/nfssvc.c88
-rw-r--r--fs/nfsd/vfs.c37
12 files changed, 2007 insertions, 379 deletions
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index 763b78a6e9de..83ee34203bd7 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -426,8 +426,15 @@ nlmsvc_lock(struct svc_rqst *rqstp, struct nlm_file *file,
426 ret = nlm_granted; 426 ret = nlm_granted;
427 goto out; 427 goto out;
428 case -EAGAIN: 428 case -EAGAIN:
429 /*
430 * If this is a blocking request for an
431 * already pending lock request then we need
432 * to put it back on lockd's block list
433 */
434 if (wait)
435 break;
429 ret = nlm_lck_denied; 436 ret = nlm_lck_denied;
430 break; 437 goto out;
431 case FILE_LOCK_DEFERRED: 438 case FILE_LOCK_DEFERRED:
432 if (wait) 439 if (wait)
433 break; 440 break;
@@ -443,10 +450,6 @@ nlmsvc_lock(struct svc_rqst *rqstp, struct nlm_file *file,
443 goto out; 450 goto out;
444 } 451 }
445 452
446 ret = nlm_lck_denied;
447 if (!wait)
448 goto out;
449
450 ret = nlm_lck_blocked; 453 ret = nlm_lck_blocked;
451 454
452 /* Append to list of blocked */ 455 /* Append to list of blocked */
diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig
index 44d7d04dab95..503b9da159a3 100644
--- a/fs/nfsd/Kconfig
+++ b/fs/nfsd/Kconfig
@@ -1,6 +1,7 @@
1config NFSD 1config NFSD
2 tristate "NFS server support" 2 tristate "NFS server support"
3 depends on INET 3 depends on INET
4 depends on FILE_LOCKING
4 select LOCKD 5 select LOCKD
5 select SUNRPC 6 select SUNRPC
6 select EXPORTFS 7 select EXPORTFS
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c
index 9dbd2eb91281..7c9fe838f038 100644
--- a/fs/nfsd/nfs3proc.c
+++ b/fs/nfsd/nfs3proc.c
@@ -18,6 +18,7 @@
18#include <linux/unistd.h> 18#include <linux/unistd.h>
19#include <linux/slab.h> 19#include <linux/slab.h>
20#include <linux/major.h> 20#include <linux/major.h>
21#include <linux/magic.h>
21 22
22#include <linux/sunrpc/svc.h> 23#include <linux/sunrpc/svc.h>
23#include <linux/nfsd/nfsd.h> 24#include <linux/nfsd/nfsd.h>
@@ -202,6 +203,7 @@ nfsd3_proc_write(struct svc_rqst *rqstp, struct nfsd3_writeargs *argp,
202 struct nfsd3_writeres *resp) 203 struct nfsd3_writeres *resp)
203{ 204{
204 __be32 nfserr; 205 __be32 nfserr;
206 unsigned long cnt = argp->len;
205 207
206 dprintk("nfsd: WRITE(3) %s %d bytes at %ld%s\n", 208 dprintk("nfsd: WRITE(3) %s %d bytes at %ld%s\n",
207 SVCFH_fmt(&argp->fh), 209 SVCFH_fmt(&argp->fh),
@@ -214,9 +216,9 @@ nfsd3_proc_write(struct svc_rqst *rqstp, struct nfsd3_writeargs *argp,
214 nfserr = nfsd_write(rqstp, &resp->fh, NULL, 216 nfserr = nfsd_write(rqstp, &resp->fh, NULL,
215 argp->offset, 217 argp->offset,
216 rqstp->rq_vec, argp->vlen, 218 rqstp->rq_vec, argp->vlen,
217 argp->len, 219 &cnt,
218 &resp->committed); 220 &resp->committed);
219 resp->count = argp->count; 221 resp->count = cnt;
220 RETURN_STATUS(nfserr); 222 RETURN_STATUS(nfserr);
221} 223}
222 224
@@ -569,7 +571,7 @@ nfsd3_proc_fsinfo(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
569 struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb; 571 struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;
570 572
571 /* Note that we don't care for remote fs's here */ 573 /* Note that we don't care for remote fs's here */
572 if (sb->s_magic == 0x4d44 /* MSDOS_SUPER_MAGIC */) { 574 if (sb->s_magic == MSDOS_SUPER_MAGIC) {
573 resp->f_properties = NFS3_FSF_BILLYBOY; 575 resp->f_properties = NFS3_FSF_BILLYBOY;
574 } 576 }
575 resp->f_maxfilesize = sb->s_maxbytes; 577 resp->f_maxfilesize = sb->s_maxbytes;
@@ -610,7 +612,7 @@ nfsd3_proc_pathconf(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
610 resp->p_link_max = EXT2_LINK_MAX; 612 resp->p_link_max = EXT2_LINK_MAX;
611 resp->p_name_max = EXT2_NAME_LEN; 613 resp->p_name_max = EXT2_NAME_LEN;
612 break; 614 break;
613 case 0x4d44: /* MSDOS_SUPER_MAGIC */ 615 case MSDOS_SUPER_MAGIC:
614 resp->p_case_insensitive = 1; 616 resp->p_case_insensitive = 1;
615 resp->p_case_preserving = 0; 617 resp->p_case_preserving = 0;
616 break; 618 break;
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index c464181b5994..290289bd44f7 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -218,7 +218,7 @@ static int
218encode_cb_recall(struct xdr_stream *xdr, struct nfs4_cb_recall *cb_rec) 218encode_cb_recall(struct xdr_stream *xdr, struct nfs4_cb_recall *cb_rec)
219{ 219{
220 __be32 *p; 220 __be32 *p;
221 int len = cb_rec->cbr_fhlen; 221 int len = cb_rec->cbr_fh.fh_size;
222 222
223 RESERVE_SPACE(12+sizeof(cb_rec->cbr_stateid) + len); 223 RESERVE_SPACE(12+sizeof(cb_rec->cbr_stateid) + len);
224 WRITE32(OP_CB_RECALL); 224 WRITE32(OP_CB_RECALL);
@@ -226,7 +226,7 @@ encode_cb_recall(struct xdr_stream *xdr, struct nfs4_cb_recall *cb_rec)
226 WRITEMEM(&cb_rec->cbr_stateid.si_opaque, sizeof(stateid_opaque_t)); 226 WRITEMEM(&cb_rec->cbr_stateid.si_opaque, sizeof(stateid_opaque_t));
227 WRITE32(cb_rec->cbr_trunc); 227 WRITE32(cb_rec->cbr_trunc);
228 WRITE32(len); 228 WRITE32(len);
229 WRITEMEM(cb_rec->cbr_fhval, len); 229 WRITEMEM(&cb_rec->cbr_fh.fh_base, len);
230 return 0; 230 return 0;
231} 231}
232 232
@@ -361,9 +361,8 @@ static struct rpc_program cb_program = {
361/* Reference counting, callback cleanup, etc., all look racy as heck. 361/* Reference counting, callback cleanup, etc., all look racy as heck.
362 * And why is cb_set an atomic? */ 362 * And why is cb_set an atomic? */
363 363
364static int do_probe_callback(void *data) 364static struct rpc_clnt *setup_callback_client(struct nfs4_client *clp)
365{ 365{
366 struct nfs4_client *clp = data;
367 struct sockaddr_in addr; 366 struct sockaddr_in addr;
368 struct nfs4_callback *cb = &clp->cl_callback; 367 struct nfs4_callback *cb = &clp->cl_callback;
369 struct rpc_timeout timeparms = { 368 struct rpc_timeout timeparms = {
@@ -384,17 +383,10 @@ static int do_probe_callback(void *data)
384 .flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET), 383 .flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
385 .client_name = clp->cl_principal, 384 .client_name = clp->cl_principal,
386 }; 385 };
387 struct rpc_message msg = {
388 .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
389 .rpc_argp = clp,
390 };
391 struct rpc_clnt *client; 386 struct rpc_clnt *client;
392 int status;
393 387
394 if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5)) { 388 if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
395 status = nfserr_cb_path_down; 389 return ERR_PTR(-EINVAL);
396 goto out_err;
397 }
398 390
399 /* Initialize address */ 391 /* Initialize address */
400 memset(&addr, 0, sizeof(addr)); 392 memset(&addr, 0, sizeof(addr));
@@ -404,9 +396,29 @@ static int do_probe_callback(void *data)
404 396
405 /* Create RPC client */ 397 /* Create RPC client */
406 client = rpc_create(&args); 398 client = rpc_create(&args);
399 if (IS_ERR(client))
400 dprintk("NFSD: couldn't create callback client: %ld\n",
401 PTR_ERR(client));
402 return client;
403
404}
405
406static int do_probe_callback(void *data)
407{
408 struct nfs4_client *clp = data;
409 struct nfs4_callback *cb = &clp->cl_callback;
410 struct rpc_message msg = {
411 .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
412 .rpc_argp = clp,
413 };
414 struct rpc_clnt *client;
415 int status;
416
417 client = setup_callback_client(clp);
407 if (IS_ERR(client)) { 418 if (IS_ERR(client)) {
408 dprintk("NFSD: couldn't create callback client\n");
409 status = PTR_ERR(client); 419 status = PTR_ERR(client);
420 dprintk("NFSD: couldn't create callback client: %d\n",
421 status);
410 goto out_err; 422 goto out_err;
411 } 423 }
412 424
@@ -422,10 +434,10 @@ static int do_probe_callback(void *data)
422out_release_client: 434out_release_client:
423 rpc_shutdown_client(client); 435 rpc_shutdown_client(client);
424out_err: 436out_err:
425 dprintk("NFSD: warning: no callback path to client %.*s\n", 437 dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
426 (int)clp->cl_name.len, clp->cl_name.data); 438 (int)clp->cl_name.len, clp->cl_name.data, status);
427 put_nfs4_client(clp); 439 put_nfs4_client(clp);
428 return status; 440 return 0;
429} 441}
430 442
431/* 443/*
@@ -451,7 +463,6 @@ nfsd4_probe_callback(struct nfs4_client *clp)
451 463
452/* 464/*
453 * called with dp->dl_count inc'ed. 465 * called with dp->dl_count inc'ed.
454 * nfs4_lock_state() may or may not have been called.
455 */ 466 */
456void 467void
457nfsd4_cb_recall(struct nfs4_delegation *dp) 468nfsd4_cb_recall(struct nfs4_delegation *dp)
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 9fa60a3ad48c..b2883e9c6381 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -93,6 +93,21 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
93 open->op_truncate = 0; 93 open->op_truncate = 0;
94 94
95 if (open->op_create) { 95 if (open->op_create) {
96 /* FIXME: check session persistence and pnfs flags.
97 * The nfsv4.1 spec requires the following semantics:
98 *
99 * Persistent | pNFS | Server REQUIRED | Client Allowed
100 * Reply Cache | server | |
101 * -------------+--------+-----------------+--------------------
102 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
103 * | | | (SHOULD)
104 * | | and EXCLUSIVE4 | or EXCLUSIVE4
105 * | | | (SHOULD NOT)
106 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
107 * yes | no | GUARDED4 | GUARDED4
108 * yes | yes | GUARDED4 | GUARDED4
109 */
110
96 /* 111 /*
97 * Note: create modes (UNCHECKED,GUARDED...) are the same 112 * Note: create modes (UNCHECKED,GUARDED...) are the same
98 * in NFSv4 as in v3. 113 * in NFSv4 as in v3.
@@ -103,11 +118,13 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
103 (u32 *)open->op_verf.data, 118 (u32 *)open->op_verf.data,
104 &open->op_truncate, &created); 119 &open->op_truncate, &created);
105 120
106 /* If we ever decide to use different attrs to store the 121 /*
107 * verifier in nfsd_create_v3, then we'll need to change this 122 * Following rfc 3530 14.2.16, use the returned bitmask
123 * to indicate which attributes we used to store the
124 * verifier:
108 */ 125 */
109 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) 126 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
110 open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS | 127 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
111 FATTR4_WORD1_TIME_MODIFY); 128 FATTR4_WORD1_TIME_MODIFY);
112 } else { 129 } else {
113 status = nfsd_lookup(rqstp, current_fh, 130 status = nfsd_lookup(rqstp, current_fh,
@@ -118,13 +135,11 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
118 goto out; 135 goto out;
119 136
120 set_change_info(&open->op_cinfo, current_fh); 137 set_change_info(&open->op_cinfo, current_fh);
121
122 /* set reply cache */
123 fh_dup2(current_fh, &resfh); 138 fh_dup2(current_fh, &resfh);
124 open->op_stateowner->so_replay.rp_openfh_len = resfh.fh_handle.fh_size;
125 memcpy(open->op_stateowner->so_replay.rp_openfh,
126 &resfh.fh_handle.fh_base, resfh.fh_handle.fh_size);
127 139
140 /* set reply cache */
141 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
142 &resfh.fh_handle);
128 if (!created) 143 if (!created)
129 status = do_open_permission(rqstp, current_fh, open, 144 status = do_open_permission(rqstp, current_fh, open,
130 NFSD_MAY_NOP); 145 NFSD_MAY_NOP);
@@ -150,10 +165,8 @@ do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_
150 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); 165 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
151 166
152 /* set replay cache */ 167 /* set replay cache */
153 open->op_stateowner->so_replay.rp_openfh_len = current_fh->fh_handle.fh_size; 168 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
154 memcpy(open->op_stateowner->so_replay.rp_openfh, 169 &current_fh->fh_handle);
155 &current_fh->fh_handle.fh_base,
156 current_fh->fh_handle.fh_size);
157 170
158 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && 171 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
159 (open->op_iattr.ia_size == 0); 172 (open->op_iattr.ia_size == 0);
@@ -164,12 +177,23 @@ do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_
164 return status; 177 return status;
165} 178}
166 179
180static void
181copy_clientid(clientid_t *clid, struct nfsd4_session *session)
182{
183 struct nfsd4_sessionid *sid =
184 (struct nfsd4_sessionid *)session->se_sessionid.data;
185
186 clid->cl_boot = sid->clientid.cl_boot;
187 clid->cl_id = sid->clientid.cl_id;
188}
167 189
168static __be32 190static __be32
169nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 191nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
170 struct nfsd4_open *open) 192 struct nfsd4_open *open)
171{ 193{
172 __be32 status; 194 __be32 status;
195 struct nfsd4_compoundres *resp;
196
173 dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n", 197 dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
174 (int)open->op_fname.len, open->op_fname.data, 198 (int)open->op_fname.len, open->op_fname.data,
175 open->op_stateowner); 199 open->op_stateowner);
@@ -178,16 +202,19 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
178 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) 202 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
179 return nfserr_inval; 203 return nfserr_inval;
180 204
205 if (nfsd4_has_session(cstate))
206 copy_clientid(&open->op_clientid, cstate->session);
207
181 nfs4_lock_state(); 208 nfs4_lock_state();
182 209
183 /* check seqid for replay. set nfs4_owner */ 210 /* check seqid for replay. set nfs4_owner */
184 status = nfsd4_process_open1(open); 211 resp = rqstp->rq_resp;
212 status = nfsd4_process_open1(&resp->cstate, open);
185 if (status == nfserr_replay_me) { 213 if (status == nfserr_replay_me) {
186 struct nfs4_replay *rp = &open->op_stateowner->so_replay; 214 struct nfs4_replay *rp = &open->op_stateowner->so_replay;
187 fh_put(&cstate->current_fh); 215 fh_put(&cstate->current_fh);
188 cstate->current_fh.fh_handle.fh_size = rp->rp_openfh_len; 216 fh_copy_shallow(&cstate->current_fh.fh_handle,
189 memcpy(&cstate->current_fh.fh_handle.fh_base, rp->rp_openfh, 217 &rp->rp_openfh);
190 rp->rp_openfh_len);
191 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); 218 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
192 if (status) 219 if (status)
193 dprintk("nfsd4_open: replay failed" 220 dprintk("nfsd4_open: replay failed"
@@ -209,10 +236,6 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
209 236
210 switch (open->op_claim_type) { 237 switch (open->op_claim_type) {
211 case NFS4_OPEN_CLAIM_DELEGATE_CUR: 238 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
212 status = nfserr_inval;
213 if (open->op_create)
214 goto out;
215 /* fall through */
216 case NFS4_OPEN_CLAIM_NULL: 239 case NFS4_OPEN_CLAIM_NULL:
217 /* 240 /*
218 * (1) set CURRENT_FH to the file being opened, 241 * (1) set CURRENT_FH to the file being opened,
@@ -455,8 +478,9 @@ nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
455 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) 478 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
456 return nfserr_inval; 479 return nfserr_inval;
457 480
458 getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; 481 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
459 getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; 482 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
483 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
460 484
461 getattr->ga_fhp = &cstate->current_fh; 485 getattr->ga_fhp = &cstate->current_fh;
462 return nfs_ok; 486 return nfs_ok;
@@ -520,9 +544,8 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
520 544
521 nfs4_lock_state(); 545 nfs4_lock_state();
522 /* check stateid */ 546 /* check stateid */
523 if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh, 547 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
524 &read->rd_stateid, 548 RD_STATE, &read->rd_filp))) {
525 CHECK_FH | RD_STATE, &read->rd_filp))) {
526 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); 549 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
527 goto out; 550 goto out;
528 } 551 }
@@ -548,8 +571,9 @@ nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
548 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) 571 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
549 return nfserr_inval; 572 return nfserr_inval;
550 573
551 readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; 574 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
552 readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; 575 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
576 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
553 577
554 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) || 578 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
555 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) 579 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
@@ -653,8 +677,8 @@ nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
653 677
654 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { 678 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
655 nfs4_lock_state(); 679 nfs4_lock_state();
656 status = nfs4_preprocess_stateid_op(&cstate->current_fh, 680 status = nfs4_preprocess_stateid_op(cstate,
657 &setattr->sa_stateid, CHECK_FH | WR_STATE, NULL); 681 &setattr->sa_stateid, WR_STATE, NULL);
658 nfs4_unlock_state(); 682 nfs4_unlock_state();
659 if (status) { 683 if (status) {
660 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); 684 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
@@ -685,6 +709,7 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
685 struct file *filp = NULL; 709 struct file *filp = NULL;
686 u32 *p; 710 u32 *p;
687 __be32 status = nfs_ok; 711 __be32 status = nfs_ok;
712 unsigned long cnt;
688 713
689 /* no need to check permission - this will be done in nfsd_write() */ 714 /* no need to check permission - this will be done in nfsd_write() */
690 715
@@ -692,8 +717,7 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
692 return nfserr_inval; 717 return nfserr_inval;
693 718
694 nfs4_lock_state(); 719 nfs4_lock_state();
695 status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid, 720 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
696 CHECK_FH | WR_STATE, &filp);
697 if (filp) 721 if (filp)
698 get_file(filp); 722 get_file(filp);
699 nfs4_unlock_state(); 723 nfs4_unlock_state();
@@ -703,7 +727,7 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
703 return status; 727 return status;
704 } 728 }
705 729
706 write->wr_bytes_written = write->wr_buflen; 730 cnt = write->wr_buflen;
707 write->wr_how_written = write->wr_stable_how; 731 write->wr_how_written = write->wr_stable_how;
708 p = (u32 *)write->wr_verifier.data; 732 p = (u32 *)write->wr_verifier.data;
709 *p++ = nfssvc_boot.tv_sec; 733 *p++ = nfssvc_boot.tv_sec;
@@ -711,10 +735,12 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
711 735
712 status = nfsd_write(rqstp, &cstate->current_fh, filp, 736 status = nfsd_write(rqstp, &cstate->current_fh, filp,
713 write->wr_offset, rqstp->rq_vec, write->wr_vlen, 737 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
714 write->wr_buflen, &write->wr_how_written); 738 &cnt, &write->wr_how_written);
715 if (filp) 739 if (filp)
716 fput(filp); 740 fput(filp);
717 741
742 write->wr_bytes_written = cnt;
743
718 if (status == nfserr_symlink) 744 if (status == nfserr_symlink)
719 status = nfserr_inval; 745 status = nfserr_inval;
720 return status; 746 return status;
@@ -737,8 +763,9 @@ _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
737 if (status) 763 if (status)
738 return status; 764 return status;
739 765
740 if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) 766 if ((verify->ve_bmval[0] & ~nfsd_suppattrs0(cstate->minorversion))
741 || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) 767 || (verify->ve_bmval[1] & ~nfsd_suppattrs1(cstate->minorversion))
768 || (verify->ve_bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
742 return nfserr_attrnotsupp; 769 return nfserr_attrnotsupp;
743 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) 770 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
744 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) 771 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
@@ -766,7 +793,8 @@ _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
766 if (status) 793 if (status)
767 goto out_kfree; 794 goto out_kfree;
768 795
769 p = buf + 3; 796 /* skip bitmap */
797 p = buf + 1 + ntohl(buf[0]);
770 status = nfserr_not_same; 798 status = nfserr_not_same;
771 if (ntohl(*p++) != verify->ve_attrlen) 799 if (ntohl(*p++) != verify->ve_attrlen)
772 goto out_kfree; 800 goto out_kfree;
@@ -813,39 +841,17 @@ static inline void nfsd4_increment_op_stats(u32 opnum)
813 nfsdstats.nfs4_opcount[opnum]++; 841 nfsdstats.nfs4_opcount[opnum]++;
814} 842}
815 843
816static void cstate_free(struct nfsd4_compound_state *cstate)
817{
818 if (cstate == NULL)
819 return;
820 fh_put(&cstate->current_fh);
821 fh_put(&cstate->save_fh);
822 BUG_ON(cstate->replay_owner);
823 kfree(cstate);
824}
825
826static struct nfsd4_compound_state *cstate_alloc(void)
827{
828 struct nfsd4_compound_state *cstate;
829
830 cstate = kmalloc(sizeof(struct nfsd4_compound_state), GFP_KERNEL);
831 if (cstate == NULL)
832 return NULL;
833 fh_init(&cstate->current_fh, NFS4_FHSIZE);
834 fh_init(&cstate->save_fh, NFS4_FHSIZE);
835 cstate->replay_owner = NULL;
836 return cstate;
837}
838
839typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, 844typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
840 void *); 845 void *);
846enum nfsd4_op_flags {
847 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
848 ALLOWED_ON_ABSENT_FS = 2 << 0, /* ops processed on absent fs */
849 ALLOWED_AS_FIRST_OP = 3 << 0, /* ops reqired first in compound */
850};
841 851
842struct nfsd4_operation { 852struct nfsd4_operation {
843 nfsd4op_func op_func; 853 nfsd4op_func op_func;
844 u32 op_flags; 854 u32 op_flags;
845/* Most ops require a valid current filehandle; a few don't: */
846#define ALLOWED_WITHOUT_FH 1
847/* GETATTR and ops not listed as returning NFS4ERR_MOVED: */
848#define ALLOWED_ON_ABSENT_FS 2
849 char *op_name; 855 char *op_name;
850}; 856};
851 857
@@ -854,6 +860,51 @@ static struct nfsd4_operation nfsd4_ops[];
854static const char *nfsd4_op_name(unsigned opnum); 860static const char *nfsd4_op_name(unsigned opnum);
855 861
856/* 862/*
863 * This is a replay of a compound for which no cache entry pages
864 * were used. Encode the sequence operation, and if cachethis is FALSE
865 * encode the uncache rep error on the next operation.
866 */
867static __be32
868nfsd4_enc_uncached_replay(struct nfsd4_compoundargs *args,
869 struct nfsd4_compoundres *resp)
870{
871 struct nfsd4_op *op;
872
873 dprintk("--> %s resp->opcnt %d ce_cachethis %u \n", __func__,
874 resp->opcnt, resp->cstate.slot->sl_cache_entry.ce_cachethis);
875
876 /* Encode the replayed sequence operation */
877 BUG_ON(resp->opcnt != 1);
878 op = &args->ops[resp->opcnt - 1];
879 nfsd4_encode_operation(resp, op);
880
881 /*return nfserr_retry_uncached_rep in next operation. */
882 if (resp->cstate.slot->sl_cache_entry.ce_cachethis == 0) {
883 op = &args->ops[resp->opcnt++];
884 op->status = nfserr_retry_uncached_rep;
885 nfsd4_encode_operation(resp, op);
886 }
887 return op->status;
888}
889
890/*
891 * Enforce NFSv4.1 COMPOUND ordering rules.
892 *
893 * TODO:
894 * - enforce NFS4ERR_NOT_ONLY_OP,
895 * - DESTROY_SESSION MUST be the final operation in the COMPOUND request.
896 */
897static bool nfs41_op_ordering_ok(struct nfsd4_compoundargs *args)
898{
899 if (args->minorversion && args->opcnt > 0) {
900 struct nfsd4_op *op = &args->ops[0];
901 return (op->status == nfserr_op_illegal) ||
902 (nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP);
903 }
904 return true;
905}
906
907/*
857 * COMPOUND call. 908 * COMPOUND call.
858 */ 909 */
859static __be32 910static __be32
@@ -863,12 +914,13 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
863{ 914{
864 struct nfsd4_op *op; 915 struct nfsd4_op *op;
865 struct nfsd4_operation *opdesc; 916 struct nfsd4_operation *opdesc;
866 struct nfsd4_compound_state *cstate = NULL; 917 struct nfsd4_compound_state *cstate = &resp->cstate;
867 int slack_bytes; 918 int slack_bytes;
868 __be32 status; 919 __be32 status;
869 920
870 resp->xbuf = &rqstp->rq_res; 921 resp->xbuf = &rqstp->rq_res;
871 resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len; 922 resp->p = rqstp->rq_res.head[0].iov_base +
923 rqstp->rq_res.head[0].iov_len;
872 resp->tagp = resp->p; 924 resp->tagp = resp->p;
873 /* reserve space for: taglen, tag, and opcnt */ 925 /* reserve space for: taglen, tag, and opcnt */
874 resp->p += 2 + XDR_QUADLEN(args->taglen); 926 resp->p += 2 + XDR_QUADLEN(args->taglen);
@@ -877,18 +929,25 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
877 resp->tag = args->tag; 929 resp->tag = args->tag;
878 resp->opcnt = 0; 930 resp->opcnt = 0;
879 resp->rqstp = rqstp; 931 resp->rqstp = rqstp;
932 resp->cstate.minorversion = args->minorversion;
933 resp->cstate.replay_owner = NULL;
934 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
935 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
936 /* Use the deferral mechanism only for NFSv4.0 compounds */
937 rqstp->rq_usedeferral = (args->minorversion == 0);
880 938
881 /* 939 /*
882 * According to RFC3010, this takes precedence over all other errors. 940 * According to RFC3010, this takes precedence over all other errors.
883 */ 941 */
884 status = nfserr_minor_vers_mismatch; 942 status = nfserr_minor_vers_mismatch;
885 if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION) 943 if (args->minorversion > nfsd_supported_minorversion)
886 goto out; 944 goto out;
887 945
888 status = nfserr_resource; 946 if (!nfs41_op_ordering_ok(args)) {
889 cstate = cstate_alloc(); 947 op = &args->ops[0];
890 if (cstate == NULL) 948 op->status = nfserr_sequence_pos;
891 goto out; 949 goto encode_op;
950 }
892 951
893 status = nfs_ok; 952 status = nfs_ok;
894 while (!status && resp->opcnt < args->opcnt) { 953 while (!status && resp->opcnt < args->opcnt) {
@@ -897,7 +956,6 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
897 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", 956 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
898 resp->opcnt, args->opcnt, op->opnum, 957 resp->opcnt, args->opcnt, op->opnum,
899 nfsd4_op_name(op->opnum)); 958 nfsd4_op_name(op->opnum));
900
901 /* 959 /*
902 * The XDR decode routines may have pre-set op->status; 960 * The XDR decode routines may have pre-set op->status;
903 * for example, if there is a miscellaneous XDR error 961 * for example, if there is a miscellaneous XDR error
@@ -938,6 +996,15 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
938 BUG_ON(op->status == nfs_ok); 996 BUG_ON(op->status == nfs_ok);
939 997
940encode_op: 998encode_op:
999 /* Only from SEQUENCE or CREATE_SESSION */
1000 if (resp->cstate.status == nfserr_replay_cache) {
1001 dprintk("%s NFS4.1 replay from cache\n", __func__);
1002 if (nfsd4_not_cached(resp))
1003 status = nfsd4_enc_uncached_replay(args, resp);
1004 else
1005 status = op->status;
1006 goto out;
1007 }
941 if (op->status == nfserr_replay_me) { 1008 if (op->status == nfserr_replay_me) {
942 op->replay = &cstate->replay_owner->so_replay; 1009 op->replay = &cstate->replay_owner->so_replay;
943 nfsd4_encode_replay(resp, op); 1010 nfsd4_encode_replay(resp, op);
@@ -961,15 +1028,24 @@ encode_op:
961 1028
962 nfsd4_increment_op_stats(op->opnum); 1029 nfsd4_increment_op_stats(op->opnum);
963 } 1030 }
1031 if (!rqstp->rq_usedeferral && status == nfserr_dropit) {
1032 dprintk("%s Dropit - send NFS4ERR_DELAY\n", __func__);
1033 status = nfserr_jukebox;
1034 }
964 1035
965 cstate_free(cstate); 1036 resp->cstate.status = status;
1037 fh_put(&resp->cstate.current_fh);
1038 fh_put(&resp->cstate.save_fh);
1039 BUG_ON(resp->cstate.replay_owner);
966out: 1040out:
967 nfsd4_release_compoundargs(args); 1041 nfsd4_release_compoundargs(args);
1042 /* Reset deferral mechanism for RPC deferrals */
1043 rqstp->rq_usedeferral = 1;
968 dprintk("nfsv4 compound returned %d\n", ntohl(status)); 1044 dprintk("nfsv4 compound returned %d\n", ntohl(status));
969 return status; 1045 return status;
970} 1046}
971 1047
972static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = { 1048static struct nfsd4_operation nfsd4_ops[] = {
973 [OP_ACCESS] = { 1049 [OP_ACCESS] = {
974 .op_func = (nfsd4op_func)nfsd4_access, 1050 .op_func = (nfsd4op_func)nfsd4_access,
975 .op_name = "OP_ACCESS", 1051 .op_name = "OP_ACCESS",
@@ -1045,7 +1121,7 @@ static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = {
1045 .op_name = "OP_PUTFH", 1121 .op_name = "OP_PUTFH",
1046 }, 1122 },
1047 [OP_PUTPUBFH] = { 1123 [OP_PUTPUBFH] = {
1048 /* unsupported, just for future reference: */ 1124 .op_func = (nfsd4op_func)nfsd4_putrootfh,
1049 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1125 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1050 .op_name = "OP_PUTPUBFH", 1126 .op_name = "OP_PUTPUBFH",
1051 }, 1127 },
@@ -1119,6 +1195,28 @@ static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = {
1119 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, 1195 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
1120 .op_name = "OP_RELEASE_LOCKOWNER", 1196 .op_name = "OP_RELEASE_LOCKOWNER",
1121 }, 1197 },
1198
1199 /* NFSv4.1 operations */
1200 [OP_EXCHANGE_ID] = {
1201 .op_func = (nfsd4op_func)nfsd4_exchange_id,
1202 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1203 .op_name = "OP_EXCHANGE_ID",
1204 },
1205 [OP_CREATE_SESSION] = {
1206 .op_func = (nfsd4op_func)nfsd4_create_session,
1207 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1208 .op_name = "OP_CREATE_SESSION",
1209 },
1210 [OP_DESTROY_SESSION] = {
1211 .op_func = (nfsd4op_func)nfsd4_destroy_session,
1212 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1213 .op_name = "OP_DESTROY_SESSION",
1214 },
1215 [OP_SEQUENCE] = {
1216 .op_func = (nfsd4op_func)nfsd4_sequence,
1217 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1218 .op_name = "OP_SEQUENCE",
1219 },
1122}; 1220};
1123 1221
1124static const char *nfsd4_op_name(unsigned opnum) 1222static const char *nfsd4_op_name(unsigned opnum)
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 74f7b67567fd..3444c0052a87 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -182,36 +182,26 @@ out_unlock:
182 182
183typedef int (recdir_func)(struct dentry *, struct dentry *); 183typedef int (recdir_func)(struct dentry *, struct dentry *);
184 184
185struct dentry_list { 185struct name_list {
186 struct dentry *dentry; 186 char name[HEXDIR_LEN];
187 struct list_head list; 187 struct list_head list;
188}; 188};
189 189
190struct dentry_list_arg {
191 struct list_head dentries;
192 struct dentry *parent;
193};
194
195static int 190static int
196nfsd4_build_dentrylist(void *arg, const char *name, int namlen, 191nfsd4_build_namelist(void *arg, const char *name, int namlen,
197 loff_t offset, u64 ino, unsigned int d_type) 192 loff_t offset, u64 ino, unsigned int d_type)
198{ 193{
199 struct dentry_list_arg *dla = arg; 194 struct list_head *names = arg;
200 struct list_head *dentries = &dla->dentries; 195 struct name_list *entry;
201 struct dentry *parent = dla->parent;
202 struct dentry *dentry;
203 struct dentry_list *child;
204 196
205 if (name && isdotent(name, namlen)) 197 if (namlen != HEXDIR_LEN - 1)
206 return 0; 198 return 0;
207 dentry = lookup_one_len(name, parent, namlen); 199 entry = kmalloc(sizeof(struct name_list), GFP_KERNEL);
208 if (IS_ERR(dentry)) 200 if (entry == NULL)
209 return PTR_ERR(dentry);
210 child = kmalloc(sizeof(*child), GFP_KERNEL);
211 if (child == NULL)
212 return -ENOMEM; 201 return -ENOMEM;
213 child->dentry = dentry; 202 memcpy(entry->name, name, HEXDIR_LEN - 1);
214 list_add(&child->list, dentries); 203 entry->name[HEXDIR_LEN - 1] = '\0';
204 list_add(&entry->list, names);
215 return 0; 205 return 0;
216} 206}
217 207
@@ -220,11 +210,9 @@ nfsd4_list_rec_dir(struct dentry *dir, recdir_func *f)
220{ 210{
221 const struct cred *original_cred; 211 const struct cred *original_cred;
222 struct file *filp; 212 struct file *filp;
223 struct dentry_list_arg dla = { 213 LIST_HEAD(names);
224 .parent = dir, 214 struct name_list *entry;
225 }; 215 struct dentry *dentry;
226 struct list_head *dentries = &dla.dentries;
227 struct dentry_list *child;
228 int status; 216 int status;
229 217
230 if (!rec_dir_init) 218 if (!rec_dir_init)
@@ -233,31 +221,34 @@ nfsd4_list_rec_dir(struct dentry *dir, recdir_func *f)
233 status = nfs4_save_creds(&original_cred); 221 status = nfs4_save_creds(&original_cred);
234 if (status < 0) 222 if (status < 0)
235 return status; 223 return status;
236 INIT_LIST_HEAD(dentries);
237 224
238 filp = dentry_open(dget(dir), mntget(rec_dir.mnt), O_RDONLY, 225 filp = dentry_open(dget(dir), mntget(rec_dir.mnt), O_RDONLY,
239 current_cred()); 226 current_cred());
240 status = PTR_ERR(filp); 227 status = PTR_ERR(filp);
241 if (IS_ERR(filp)) 228 if (IS_ERR(filp))
242 goto out; 229 goto out;
243 INIT_LIST_HEAD(dentries); 230 status = vfs_readdir(filp, nfsd4_build_namelist, &names);
244 status = vfs_readdir(filp, nfsd4_build_dentrylist, &dla);
245 fput(filp); 231 fput(filp);
246 while (!list_empty(dentries)) { 232 while (!list_empty(&names)) {
247 child = list_entry(dentries->next, struct dentry_list, list); 233 entry = list_entry(names.next, struct name_list, list);
248 status = f(dir, child->dentry); 234
235 dentry = lookup_one_len(entry->name, dir, HEXDIR_LEN-1);
236 if (IS_ERR(dentry)) {
237 status = PTR_ERR(dentry);
238 goto out;
239 }
240 status = f(dir, dentry);
241 dput(dentry);
249 if (status) 242 if (status)
250 goto out; 243 goto out;
251 list_del(&child->list); 244 list_del(&entry->list);
252 dput(child->dentry); 245 kfree(entry);
253 kfree(child);
254 } 246 }
255out: 247out:
256 while (!list_empty(dentries)) { 248 while (!list_empty(&names)) {
257 child = list_entry(dentries->next, struct dentry_list, list); 249 entry = list_entry(names.next, struct name_list, list);
258 list_del(&child->list); 250 list_del(&entry->list);
259 dput(child->dentry); 251 kfree(entry);
260 kfree(child);
261 } 252 }
262 nfs4_reset_creds(original_cred); 253 nfs4_reset_creds(original_cred);
263 return status; 254 return status;
@@ -353,7 +344,8 @@ purge_old(struct dentry *parent, struct dentry *child)
353{ 344{
354 int status; 345 int status;
355 346
356 if (nfs4_has_reclaimed_state(child->d_name.name)) 347 /* note: we currently use this path only for minorversion 0 */
348 if (nfs4_has_reclaimed_state(child->d_name.name, false))
357 return 0; 349 return 0;
358 350
359 status = nfsd4_clear_clid_dir(parent, child); 351 status = nfsd4_clear_clid_dir(parent, child);
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index b6f60f48e94b..c65a27b76a9d 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -68,6 +68,7 @@ static u32 current_delegid = 1;
68static u32 nfs4_init; 68static u32 nfs4_init;
69static stateid_t zerostateid; /* bits all 0 */ 69static stateid_t zerostateid; /* bits all 0 */
70static stateid_t onestateid; /* bits all 1 */ 70static stateid_t onestateid; /* bits all 1 */
71static u64 current_sessionid = 1;
71 72
72#define ZERO_STATEID(stateid) (!memcmp((stateid), &zerostateid, sizeof(stateid_t))) 73#define ZERO_STATEID(stateid) (!memcmp((stateid), &zerostateid, sizeof(stateid_t)))
73#define ONE_STATEID(stateid) (!memcmp((stateid), &onestateid, sizeof(stateid_t))) 74#define ONE_STATEID(stateid) (!memcmp((stateid), &onestateid, sizeof(stateid_t)))
@@ -75,18 +76,21 @@ static stateid_t onestateid; /* bits all 1 */
75/* forward declarations */ 76/* forward declarations */
76static struct nfs4_stateid * find_stateid(stateid_t *stid, int flags); 77static struct nfs4_stateid * find_stateid(stateid_t *stid, int flags);
77static struct nfs4_delegation * find_delegation_stateid(struct inode *ino, stateid_t *stid); 78static struct nfs4_delegation * find_delegation_stateid(struct inode *ino, stateid_t *stid);
78static void release_stateid_lockowners(struct nfs4_stateid *open_stp);
79static char user_recovery_dirname[PATH_MAX] = "/var/lib/nfs/v4recovery"; 79static char user_recovery_dirname[PATH_MAX] = "/var/lib/nfs/v4recovery";
80static void nfs4_set_recdir(char *recdir); 80static void nfs4_set_recdir(char *recdir);
81 81
82/* Locking: 82/* Locking: */
83 * 83
84 * client_mutex: 84/* Currently used for almost all code touching nfsv4 state: */
85 * protects clientid_hashtbl[], clientstr_hashtbl[],
86 * unconfstr_hashtbl[], uncofid_hashtbl[].
87 */
88static DEFINE_MUTEX(client_mutex); 85static DEFINE_MUTEX(client_mutex);
89 86
87/*
88 * Currently used for the del_recall_lru and file hash table. In an
89 * effort to decrease the scope of the client_mutex, this spinlock may
90 * eventually cover more:
91 */
92static DEFINE_SPINLOCK(recall_lock);
93
90static struct kmem_cache *stateowner_slab = NULL; 94static struct kmem_cache *stateowner_slab = NULL;
91static struct kmem_cache *file_slab = NULL; 95static struct kmem_cache *file_slab = NULL;
92static struct kmem_cache *stateid_slab = NULL; 96static struct kmem_cache *stateid_slab = NULL;
@@ -117,37 +121,23 @@ opaque_hashval(const void *ptr, int nbytes)
117 return x; 121 return x;
118} 122}
119 123
120/* forward declarations */
121static void release_stateowner(struct nfs4_stateowner *sop);
122static void release_stateid(struct nfs4_stateid *stp, int flags);
123
124/*
125 * Delegation state
126 */
127
128/* recall_lock protects the del_recall_lru */
129static DEFINE_SPINLOCK(recall_lock);
130static struct list_head del_recall_lru; 124static struct list_head del_recall_lru;
131 125
132static void
133free_nfs4_file(struct kref *kref)
134{
135 struct nfs4_file *fp = container_of(kref, struct nfs4_file, fi_ref);
136 list_del(&fp->fi_hash);
137 iput(fp->fi_inode);
138 kmem_cache_free(file_slab, fp);
139}
140
141static inline void 126static inline void
142put_nfs4_file(struct nfs4_file *fi) 127put_nfs4_file(struct nfs4_file *fi)
143{ 128{
144 kref_put(&fi->fi_ref, free_nfs4_file); 129 if (atomic_dec_and_lock(&fi->fi_ref, &recall_lock)) {
130 list_del(&fi->fi_hash);
131 spin_unlock(&recall_lock);
132 iput(fi->fi_inode);
133 kmem_cache_free(file_slab, fi);
134 }
145} 135}
146 136
147static inline void 137static inline void
148get_nfs4_file(struct nfs4_file *fi) 138get_nfs4_file(struct nfs4_file *fi)
149{ 139{
150 kref_get(&fi->fi_ref); 140 atomic_inc(&fi->fi_ref);
151} 141}
152 142
153static int num_delegations; 143static int num_delegations;
@@ -220,9 +210,7 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_f
220 dp->dl_stateid.si_stateownerid = current_delegid++; 210 dp->dl_stateid.si_stateownerid = current_delegid++;
221 dp->dl_stateid.si_fileid = 0; 211 dp->dl_stateid.si_fileid = 0;
222 dp->dl_stateid.si_generation = 0; 212 dp->dl_stateid.si_generation = 0;
223 dp->dl_fhlen = current_fh->fh_handle.fh_size; 213 fh_copy_shallow(&dp->dl_fh, &current_fh->fh_handle);
224 memcpy(dp->dl_fhval, &current_fh->fh_handle.fh_base,
225 current_fh->fh_handle.fh_size);
226 dp->dl_time = 0; 214 dp->dl_time = 0;
227 atomic_set(&dp->dl_count, 1); 215 atomic_set(&dp->dl_count, 1);
228 list_add(&dp->dl_perfile, &fp->fi_delegations); 216 list_add(&dp->dl_perfile, &fp->fi_delegations);
@@ -311,6 +299,291 @@ static struct list_head unconf_id_hashtbl[CLIENT_HASH_SIZE];
311static struct list_head client_lru; 299static struct list_head client_lru;
312static struct list_head close_lru; 300static struct list_head close_lru;
313 301
302static void unhash_generic_stateid(struct nfs4_stateid *stp)
303{
304 list_del(&stp->st_hash);
305 list_del(&stp->st_perfile);
306 list_del(&stp->st_perstateowner);
307}
308
309static void free_generic_stateid(struct nfs4_stateid *stp)
310{
311 put_nfs4_file(stp->st_file);
312 kmem_cache_free(stateid_slab, stp);
313}
314
315static void release_lock_stateid(struct nfs4_stateid *stp)
316{
317 unhash_generic_stateid(stp);
318 locks_remove_posix(stp->st_vfs_file, (fl_owner_t)stp->st_stateowner);
319 free_generic_stateid(stp);
320}
321
322static void unhash_lockowner(struct nfs4_stateowner *sop)
323{
324 struct nfs4_stateid *stp;
325
326 list_del(&sop->so_idhash);
327 list_del(&sop->so_strhash);
328 list_del(&sop->so_perstateid);
329 while (!list_empty(&sop->so_stateids)) {
330 stp = list_first_entry(&sop->so_stateids,
331 struct nfs4_stateid, st_perstateowner);
332 release_lock_stateid(stp);
333 }
334}
335
336static void release_lockowner(struct nfs4_stateowner *sop)
337{
338 unhash_lockowner(sop);
339 nfs4_put_stateowner(sop);
340}
341
342static void
343release_stateid_lockowners(struct nfs4_stateid *open_stp)
344{
345 struct nfs4_stateowner *lock_sop;
346
347 while (!list_empty(&open_stp->st_lockowners)) {
348 lock_sop = list_entry(open_stp->st_lockowners.next,
349 struct nfs4_stateowner, so_perstateid);
350 /* list_del(&open_stp->st_lockowners); */
351 BUG_ON(lock_sop->so_is_open_owner);
352 release_lockowner(lock_sop);
353 }
354}
355
356static void release_open_stateid(struct nfs4_stateid *stp)
357{
358 unhash_generic_stateid(stp);
359 release_stateid_lockowners(stp);
360 nfsd_close(stp->st_vfs_file);
361 free_generic_stateid(stp);
362}
363
364static void unhash_openowner(struct nfs4_stateowner *sop)
365{
366 struct nfs4_stateid *stp;
367
368 list_del(&sop->so_idhash);
369 list_del(&sop->so_strhash);
370 list_del(&sop->so_perclient);
371 list_del(&sop->so_perstateid); /* XXX: necessary? */
372 while (!list_empty(&sop->so_stateids)) {
373 stp = list_first_entry(&sop->so_stateids,
374 struct nfs4_stateid, st_perstateowner);
375 release_open_stateid(stp);
376 }
377}
378
379static void release_openowner(struct nfs4_stateowner *sop)
380{
381 unhash_openowner(sop);
382 list_del(&sop->so_close_lru);
383 nfs4_put_stateowner(sop);
384}
385
386static DEFINE_SPINLOCK(sessionid_lock);
387#define SESSION_HASH_SIZE 512
388static struct list_head sessionid_hashtbl[SESSION_HASH_SIZE];
389
390static inline int
391hash_sessionid(struct nfs4_sessionid *sessionid)
392{
393 struct nfsd4_sessionid *sid = (struct nfsd4_sessionid *)sessionid;
394
395 return sid->sequence % SESSION_HASH_SIZE;
396}
397
398static inline void
399dump_sessionid(const char *fn, struct nfs4_sessionid *sessionid)
400{
401 u32 *ptr = (u32 *)(&sessionid->data[0]);
402 dprintk("%s: %u:%u:%u:%u\n", fn, ptr[0], ptr[1], ptr[2], ptr[3]);
403}
404
405static void
406gen_sessionid(struct nfsd4_session *ses)
407{
408 struct nfs4_client *clp = ses->se_client;
409 struct nfsd4_sessionid *sid;
410
411 sid = (struct nfsd4_sessionid *)ses->se_sessionid.data;
412 sid->clientid = clp->cl_clientid;
413 sid->sequence = current_sessionid++;
414 sid->reserved = 0;
415}
416
417/*
418 * Give the client the number of slots it requests bound by
419 * NFSD_MAX_SLOTS_PER_SESSION and by sv_drc_max_pages.
420 *
421 * If we run out of pages (sv_drc_pages_used == sv_drc_max_pages) we
422 * should (up to a point) re-negotiate active sessions and reduce their
423 * slot usage to make rooom for new connections. For now we just fail the
424 * create session.
425 */
426static int set_forechannel_maxreqs(struct nfsd4_channel_attrs *fchan)
427{
428 int status = 0, np = fchan->maxreqs * NFSD_PAGES_PER_SLOT;
429
430 spin_lock(&nfsd_serv->sv_lock);
431 if (np + nfsd_serv->sv_drc_pages_used > nfsd_serv->sv_drc_max_pages)
432 np = nfsd_serv->sv_drc_max_pages - nfsd_serv->sv_drc_pages_used;
433 nfsd_serv->sv_drc_pages_used += np;
434 spin_unlock(&nfsd_serv->sv_lock);
435
436 if (np <= 0) {
437 status = nfserr_resource;
438 fchan->maxreqs = 0;
439 } else
440 fchan->maxreqs = np / NFSD_PAGES_PER_SLOT;
441
442 return status;
443}
444
445/*
446 * fchan holds the client values on input, and the server values on output
447 */
448static int init_forechannel_attrs(struct svc_rqst *rqstp,
449 struct nfsd4_session *session,
450 struct nfsd4_channel_attrs *fchan)
451{
452 int status = 0;
453 __u32 maxcount = svc_max_payload(rqstp);
454
455 /* headerpadsz set to zero in encode routine */
456
457 /* Use the client's max request and max response size if possible */
458 if (fchan->maxreq_sz > maxcount)
459 fchan->maxreq_sz = maxcount;
460 session->se_fmaxreq_sz = fchan->maxreq_sz;
461
462 if (fchan->maxresp_sz > maxcount)
463 fchan->maxresp_sz = maxcount;
464 session->se_fmaxresp_sz = fchan->maxresp_sz;
465
466 /* Set the max response cached size our default which is
467 * a multiple of PAGE_SIZE and small */
468 session->se_fmaxresp_cached = NFSD_PAGES_PER_SLOT * PAGE_SIZE;
469 fchan->maxresp_cached = session->se_fmaxresp_cached;
470
471 /* Use the client's maxops if possible */
472 if (fchan->maxops > NFSD_MAX_OPS_PER_COMPOUND)
473 fchan->maxops = NFSD_MAX_OPS_PER_COMPOUND;
474 session->se_fmaxops = fchan->maxops;
475
476 /* try to use the client requested number of slots */
477 if (fchan->maxreqs > NFSD_MAX_SLOTS_PER_SESSION)
478 fchan->maxreqs = NFSD_MAX_SLOTS_PER_SESSION;
479
480 /* FIXME: Error means no more DRC pages so the server should
481 * recover pages from existing sessions. For now fail session
482 * creation.
483 */
484 status = set_forechannel_maxreqs(fchan);
485
486 session->se_fnumslots = fchan->maxreqs;
487 return status;
488}
489
490static int
491alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp,
492 struct nfsd4_create_session *cses)
493{
494 struct nfsd4_session *new, tmp;
495 int idx, status = nfserr_resource, slotsize;
496
497 memset(&tmp, 0, sizeof(tmp));
498
499 /* FIXME: For now, we just accept the client back channel attributes. */
500 status = init_forechannel_attrs(rqstp, &tmp, &cses->fore_channel);
501 if (status)
502 goto out;
503
504 /* allocate struct nfsd4_session and slot table in one piece */
505 slotsize = tmp.se_fnumslots * sizeof(struct nfsd4_slot);
506 new = kzalloc(sizeof(*new) + slotsize, GFP_KERNEL);
507 if (!new)
508 goto out;
509
510 memcpy(new, &tmp, sizeof(*new));
511
512 new->se_client = clp;
513 gen_sessionid(new);
514 idx = hash_sessionid(&new->se_sessionid);
515 memcpy(clp->cl_sessionid.data, new->se_sessionid.data,
516 NFS4_MAX_SESSIONID_LEN);
517
518 new->se_flags = cses->flags;
519 kref_init(&new->se_ref);
520 spin_lock(&sessionid_lock);
521 list_add(&new->se_hash, &sessionid_hashtbl[idx]);
522 list_add(&new->se_perclnt, &clp->cl_sessions);
523 spin_unlock(&sessionid_lock);
524
525 status = nfs_ok;
526out:
527 return status;
528}
529
530/* caller must hold sessionid_lock */
531static struct nfsd4_session *
532find_in_sessionid_hashtbl(struct nfs4_sessionid *sessionid)
533{
534 struct nfsd4_session *elem;
535 int idx;
536
537 dump_sessionid(__func__, sessionid);
538 idx = hash_sessionid(sessionid);
539 dprintk("%s: idx is %d\n", __func__, idx);
540 /* Search in the appropriate list */
541 list_for_each_entry(elem, &sessionid_hashtbl[idx], se_hash) {
542 dump_sessionid("list traversal", &elem->se_sessionid);
543 if (!memcmp(elem->se_sessionid.data, sessionid->data,
544 NFS4_MAX_SESSIONID_LEN)) {
545 return elem;
546 }
547 }
548
549 dprintk("%s: session not found\n", __func__);
550 return NULL;
551}
552
553/* caller must hold sessionid_lock */
554static void
555unhash_session(struct nfsd4_session *ses)
556{
557 list_del(&ses->se_hash);
558 list_del(&ses->se_perclnt);
559}
560
561static void
562release_session(struct nfsd4_session *ses)
563{
564 spin_lock(&sessionid_lock);
565 unhash_session(ses);
566 spin_unlock(&sessionid_lock);
567 nfsd4_put_session(ses);
568}
569
570static void nfsd4_release_respages(struct page **respages, short resused);
571
572void
573free_session(struct kref *kref)
574{
575 struct nfsd4_session *ses;
576 int i;
577
578 ses = container_of(kref, struct nfsd4_session, se_ref);
579 for (i = 0; i < ses->se_fnumslots; i++) {
580 struct nfsd4_cache_entry *e = &ses->se_slots[i].sl_cache_entry;
581 nfsd4_release_respages(e->ce_respages, e->ce_resused);
582 }
583 kfree(ses->se_slots);
584 kfree(ses);
585}
586
314static inline void 587static inline void
315renew_client(struct nfs4_client *clp) 588renew_client(struct nfs4_client *clp)
316{ 589{
@@ -330,8 +603,8 @@ STALE_CLIENTID(clientid_t *clid)
330{ 603{
331 if (clid->cl_boot == boot_time) 604 if (clid->cl_boot == boot_time)
332 return 0; 605 return 0;
333 dprintk("NFSD stale clientid (%08x/%08x)\n", 606 dprintk("NFSD stale clientid (%08x/%08x) boot_time %08lx\n",
334 clid->cl_boot, clid->cl_id); 607 clid->cl_boot, clid->cl_id, boot_time);
335 return 1; 608 return 1;
336} 609}
337 610
@@ -376,6 +649,8 @@ static inline void
376free_client(struct nfs4_client *clp) 649free_client(struct nfs4_client *clp)
377{ 650{
378 shutdown_callback_client(clp); 651 shutdown_callback_client(clp);
652 nfsd4_release_respages(clp->cl_slot.sl_cache_entry.ce_respages,
653 clp->cl_slot.sl_cache_entry.ce_resused);
379 if (clp->cl_cred.cr_group_info) 654 if (clp->cl_cred.cr_group_info)
380 put_group_info(clp->cl_cred.cr_group_info); 655 put_group_info(clp->cl_cred.cr_group_info);
381 kfree(clp->cl_principal); 656 kfree(clp->cl_principal);
@@ -420,7 +695,13 @@ expire_client(struct nfs4_client *clp)
420 list_del(&clp->cl_lru); 695 list_del(&clp->cl_lru);
421 while (!list_empty(&clp->cl_openowners)) { 696 while (!list_empty(&clp->cl_openowners)) {
422 sop = list_entry(clp->cl_openowners.next, struct nfs4_stateowner, so_perclient); 697 sop = list_entry(clp->cl_openowners.next, struct nfs4_stateowner, so_perclient);
423 release_stateowner(sop); 698 release_openowner(sop);
699 }
700 while (!list_empty(&clp->cl_sessions)) {
701 struct nfsd4_session *ses;
702 ses = list_entry(clp->cl_sessions.next, struct nfsd4_session,
703 se_perclnt);
704 release_session(ses);
424 } 705 }
425 put_nfs4_client(clp); 706 put_nfs4_client(clp);
426} 707}
@@ -439,6 +720,7 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir)
439 INIT_LIST_HEAD(&clp->cl_strhash); 720 INIT_LIST_HEAD(&clp->cl_strhash);
440 INIT_LIST_HEAD(&clp->cl_openowners); 721 INIT_LIST_HEAD(&clp->cl_openowners);
441 INIT_LIST_HEAD(&clp->cl_delegations); 722 INIT_LIST_HEAD(&clp->cl_delegations);
723 INIT_LIST_HEAD(&clp->cl_sessions);
442 INIT_LIST_HEAD(&clp->cl_lru); 724 INIT_LIST_HEAD(&clp->cl_lru);
443 return clp; 725 return clp;
444} 726}
@@ -568,25 +850,45 @@ find_unconfirmed_client(clientid_t *clid)
568 return NULL; 850 return NULL;
569} 851}
570 852
853/*
854 * Return 1 iff clp's clientid establishment method matches the use_exchange_id
855 * parameter. Matching is based on the fact the at least one of the
856 * EXCHGID4_FLAG_USE_{NON_PNFS,PNFS_MDS,PNFS_DS} flags must be set for v4.1
857 *
858 * FIXME: we need to unify the clientid namespaces for nfsv4.x
859 * and correctly deal with client upgrade/downgrade in EXCHANGE_ID
860 * and SET_CLIENTID{,_CONFIRM}
861 */
862static inline int
863match_clientid_establishment(struct nfs4_client *clp, bool use_exchange_id)
864{
865 bool has_exchange_flags = (clp->cl_exchange_flags != 0);
866 return use_exchange_id == has_exchange_flags;
867}
868
571static struct nfs4_client * 869static struct nfs4_client *
572find_confirmed_client_by_str(const char *dname, unsigned int hashval) 870find_confirmed_client_by_str(const char *dname, unsigned int hashval,
871 bool use_exchange_id)
573{ 872{
574 struct nfs4_client *clp; 873 struct nfs4_client *clp;
575 874
576 list_for_each_entry(clp, &conf_str_hashtbl[hashval], cl_strhash) { 875 list_for_each_entry(clp, &conf_str_hashtbl[hashval], cl_strhash) {
577 if (same_name(clp->cl_recdir, dname)) 876 if (same_name(clp->cl_recdir, dname) &&
877 match_clientid_establishment(clp, use_exchange_id))
578 return clp; 878 return clp;
579 } 879 }
580 return NULL; 880 return NULL;
581} 881}
582 882
583static struct nfs4_client * 883static struct nfs4_client *
584find_unconfirmed_client_by_str(const char *dname, unsigned int hashval) 884find_unconfirmed_client_by_str(const char *dname, unsigned int hashval,
885 bool use_exchange_id)
585{ 886{
586 struct nfs4_client *clp; 887 struct nfs4_client *clp;
587 888
588 list_for_each_entry(clp, &unconf_str_hashtbl[hashval], cl_strhash) { 889 list_for_each_entry(clp, &unconf_str_hashtbl[hashval], cl_strhash) {
589 if (same_name(clp->cl_recdir, dname)) 890 if (same_name(clp->cl_recdir, dname) &&
891 match_clientid_establishment(clp, use_exchange_id))
590 return clp; 892 return clp;
591 } 893 }
592 return NULL; 894 return NULL;
@@ -685,6 +987,534 @@ out_err:
685 return; 987 return;
686} 988}
687 989
990void
991nfsd4_set_statp(struct svc_rqst *rqstp, __be32 *statp)
992{
993 struct nfsd4_compoundres *resp = rqstp->rq_resp;
994
995 resp->cstate.statp = statp;
996}
997
998/*
999 * Dereference the result pages.
1000 */
1001static void
1002nfsd4_release_respages(struct page **respages, short resused)
1003{
1004 int i;
1005
1006 dprintk("--> %s\n", __func__);
1007 for (i = 0; i < resused; i++) {
1008 if (!respages[i])
1009 continue;
1010 put_page(respages[i]);
1011 respages[i] = NULL;
1012 }
1013}
1014
1015static void
1016nfsd4_copy_pages(struct page **topages, struct page **frompages, short count)
1017{
1018 int i;
1019
1020 for (i = 0; i < count; i++) {
1021 topages[i] = frompages[i];
1022 if (!topages[i])
1023 continue;
1024 get_page(topages[i]);
1025 }
1026}
1027
1028/*
1029 * Cache the reply pages up to NFSD_PAGES_PER_SLOT + 1, clearing the previous
1030 * pages. We add a page to NFSD_PAGES_PER_SLOT for the case where the total
1031 * length of the XDR response is less than se_fmaxresp_cached
1032 * (NFSD_PAGES_PER_SLOT * PAGE_SIZE) but the xdr_buf pages is used for a
1033 * of the reply (e.g. readdir).
1034 *
1035 * Store the base and length of the rq_req.head[0] page
1036 * of the NFSv4.1 data, just past the rpc header.
1037 */
1038void
1039nfsd4_store_cache_entry(struct nfsd4_compoundres *resp)
1040{
1041 struct nfsd4_cache_entry *entry = &resp->cstate.slot->sl_cache_entry;
1042 struct svc_rqst *rqstp = resp->rqstp;
1043 struct nfsd4_compoundargs *args = rqstp->rq_argp;
1044 struct nfsd4_op *op = &args->ops[resp->opcnt];
1045 struct kvec *resv = &rqstp->rq_res.head[0];
1046
1047 dprintk("--> %s entry %p\n", __func__, entry);
1048
1049 /* Don't cache a failed OP_SEQUENCE. */
1050 if (resp->opcnt == 1 && op->opnum == OP_SEQUENCE && resp->cstate.status)
1051 return;
1052
1053 nfsd4_release_respages(entry->ce_respages, entry->ce_resused);
1054 entry->ce_opcnt = resp->opcnt;
1055 entry->ce_status = resp->cstate.status;
1056
1057 /*
1058 * Don't need a page to cache just the sequence operation - the slot
1059 * does this for us!
1060 */
1061
1062 if (nfsd4_not_cached(resp)) {
1063 entry->ce_resused = 0;
1064 entry->ce_rpchdrlen = 0;
1065 dprintk("%s Just cache SEQUENCE. ce_cachethis %d\n", __func__,
1066 resp->cstate.slot->sl_cache_entry.ce_cachethis);
1067 return;
1068 }
1069 entry->ce_resused = rqstp->rq_resused;
1070 if (entry->ce_resused > NFSD_PAGES_PER_SLOT + 1)
1071 entry->ce_resused = NFSD_PAGES_PER_SLOT + 1;
1072 nfsd4_copy_pages(entry->ce_respages, rqstp->rq_respages,
1073 entry->ce_resused);
1074 entry->ce_datav.iov_base = resp->cstate.statp;
1075 entry->ce_datav.iov_len = resv->iov_len - ((char *)resp->cstate.statp -
1076 (char *)page_address(rqstp->rq_respages[0]));
1077 /* Current request rpc header length*/
1078 entry->ce_rpchdrlen = (char *)resp->cstate.statp -
1079 (char *)page_address(rqstp->rq_respages[0]);
1080}
1081
1082/*
1083 * We keep the rpc header, but take the nfs reply from the replycache.
1084 */
1085static int
1086nfsd41_copy_replay_data(struct nfsd4_compoundres *resp,
1087 struct nfsd4_cache_entry *entry)
1088{
1089 struct svc_rqst *rqstp = resp->rqstp;
1090 struct kvec *resv = &resp->rqstp->rq_res.head[0];
1091 int len;
1092
1093 /* Current request rpc header length*/
1094 len = (char *)resp->cstate.statp -
1095 (char *)page_address(rqstp->rq_respages[0]);
1096 if (entry->ce_datav.iov_len + len > PAGE_SIZE) {
1097 dprintk("%s v41 cached reply too large (%Zd).\n", __func__,
1098 entry->ce_datav.iov_len);
1099 return 0;
1100 }
1101 /* copy the cached reply nfsd data past the current rpc header */
1102 memcpy((char *)resv->iov_base + len, entry->ce_datav.iov_base,
1103 entry->ce_datav.iov_len);
1104 resv->iov_len = len + entry->ce_datav.iov_len;
1105 return 1;
1106}
1107
1108/*
1109 * Keep the first page of the replay. Copy the NFSv4.1 data from the first
1110 * cached page. Replace any futher replay pages from the cache.
1111 */
1112__be32
1113nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
1114 struct nfsd4_sequence *seq)
1115{
1116 struct nfsd4_cache_entry *entry = &resp->cstate.slot->sl_cache_entry;
1117 __be32 status;
1118
1119 dprintk("--> %s entry %p\n", __func__, entry);
1120
1121 /*
1122 * If this is just the sequence operation, we did not keep
1123 * a page in the cache entry because we can just use the
1124 * slot info stored in struct nfsd4_sequence that was checked
1125 * against the slot in nfsd4_sequence().
1126 *
1127 * This occurs when seq->cachethis is FALSE, or when the client
1128 * session inactivity timer fires and a solo sequence operation
1129 * is sent (lease renewal).
1130 */
1131 if (seq && nfsd4_not_cached(resp)) {
1132 seq->maxslots = resp->cstate.session->se_fnumslots;
1133 return nfs_ok;
1134 }
1135
1136 if (!nfsd41_copy_replay_data(resp, entry)) {
1137 /*
1138 * Not enough room to use the replay rpc header, send the
1139 * cached header. Release all the allocated result pages.
1140 */
1141 svc_free_res_pages(resp->rqstp);
1142 nfsd4_copy_pages(resp->rqstp->rq_respages, entry->ce_respages,
1143 entry->ce_resused);
1144 } else {
1145 /* Release all but the first allocated result page */
1146
1147 resp->rqstp->rq_resused--;
1148 svc_free_res_pages(resp->rqstp);
1149
1150 nfsd4_copy_pages(&resp->rqstp->rq_respages[1],
1151 &entry->ce_respages[1],
1152 entry->ce_resused - 1);
1153 }
1154
1155 resp->rqstp->rq_resused = entry->ce_resused;
1156 resp->opcnt = entry->ce_opcnt;
1157 resp->cstate.iovlen = entry->ce_datav.iov_len + entry->ce_rpchdrlen;
1158 status = entry->ce_status;
1159
1160 return status;
1161}
1162
1163/*
1164 * Set the exchange_id flags returned by the server.
1165 */
1166static void
1167nfsd4_set_ex_flags(struct nfs4_client *new, struct nfsd4_exchange_id *clid)
1168{
1169 /* pNFS is not supported */
1170 new->cl_exchange_flags |= EXCHGID4_FLAG_USE_NON_PNFS;
1171
1172 /* Referrals are supported, Migration is not. */
1173 new->cl_exchange_flags |= EXCHGID4_FLAG_SUPP_MOVED_REFER;
1174
1175 /* set the wire flags to return to client. */
1176 clid->flags = new->cl_exchange_flags;
1177}
1178
1179__be32
1180nfsd4_exchange_id(struct svc_rqst *rqstp,
1181 struct nfsd4_compound_state *cstate,
1182 struct nfsd4_exchange_id *exid)
1183{
1184 struct nfs4_client *unconf, *conf, *new;
1185 int status;
1186 unsigned int strhashval;
1187 char dname[HEXDIR_LEN];
1188 nfs4_verifier verf = exid->verifier;
1189 u32 ip_addr = svc_addr_in(rqstp)->sin_addr.s_addr;
1190
1191 dprintk("%s rqstp=%p exid=%p clname.len=%u clname.data=%p "
1192 " ip_addr=%u flags %x, spa_how %d\n",
1193 __func__, rqstp, exid, exid->clname.len, exid->clname.data,
1194 ip_addr, exid->flags, exid->spa_how);
1195
1196 if (!check_name(exid->clname) || (exid->flags & ~EXCHGID4_FLAG_MASK_A))
1197 return nfserr_inval;
1198
1199 /* Currently only support SP4_NONE */
1200 switch (exid->spa_how) {
1201 case SP4_NONE:
1202 break;
1203 case SP4_SSV:
1204 return nfserr_encr_alg_unsupp;
1205 default:
1206 BUG(); /* checked by xdr code */
1207 case SP4_MACH_CRED:
1208 return nfserr_serverfault; /* no excuse :-/ */
1209 }
1210
1211 status = nfs4_make_rec_clidname(dname, &exid->clname);
1212
1213 if (status)
1214 goto error;
1215
1216 strhashval = clientstr_hashval(dname);
1217
1218 nfs4_lock_state();
1219 status = nfs_ok;
1220
1221 conf = find_confirmed_client_by_str(dname, strhashval, true);
1222 if (conf) {
1223 if (!same_verf(&verf, &conf->cl_verifier)) {
1224 /* 18.35.4 case 8 */
1225 if (exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) {
1226 status = nfserr_not_same;
1227 goto out;
1228 }
1229 /* Client reboot: destroy old state */
1230 expire_client(conf);
1231 goto out_new;
1232 }
1233 if (!same_creds(&conf->cl_cred, &rqstp->rq_cred)) {
1234 /* 18.35.4 case 9 */
1235 if (exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) {
1236 status = nfserr_perm;
1237 goto out;
1238 }
1239 expire_client(conf);
1240 goto out_new;
1241 }
1242 if (ip_addr != conf->cl_addr &&
1243 !(exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A)) {
1244 /* Client collision. 18.35.4 case 3 */
1245 status = nfserr_clid_inuse;
1246 goto out;
1247 }
1248 /*
1249 * Set bit when the owner id and verifier map to an already
1250 * confirmed client id (18.35.3).
1251 */
1252 exid->flags |= EXCHGID4_FLAG_CONFIRMED_R;
1253
1254 /*
1255 * Falling into 18.35.4 case 2, possible router replay.
1256 * Leave confirmed record intact and return same result.
1257 */
1258 copy_verf(conf, &verf);
1259 new = conf;
1260 goto out_copy;
1261 } else {
1262 /* 18.35.4 case 7 */
1263 if (exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) {
1264 status = nfserr_noent;
1265 goto out;
1266 }
1267 }
1268
1269 unconf = find_unconfirmed_client_by_str(dname, strhashval, true);
1270 if (unconf) {
1271 /*
1272 * Possible retry or client restart. Per 18.35.4 case 4,
1273 * a new unconfirmed record should be generated regardless
1274 * of whether any properties have changed.
1275 */
1276 expire_client(unconf);
1277 }
1278
1279out_new:
1280 /* Normal case */
1281 new = create_client(exid->clname, dname);
1282 if (new == NULL) {
1283 status = nfserr_resource;
1284 goto out;
1285 }
1286
1287 copy_verf(new, &verf);
1288 copy_cred(&new->cl_cred, &rqstp->rq_cred);
1289 new->cl_addr = ip_addr;
1290 gen_clid(new);
1291 gen_confirm(new);
1292 add_to_unconfirmed(new, strhashval);
1293out_copy:
1294 exid->clientid.cl_boot = new->cl_clientid.cl_boot;
1295 exid->clientid.cl_id = new->cl_clientid.cl_id;
1296
1297 new->cl_slot.sl_seqid = 0;
1298 exid->seqid = 1;
1299 nfsd4_set_ex_flags(new, exid);
1300
1301 dprintk("nfsd4_exchange_id seqid %d flags %x\n",
1302 new->cl_slot.sl_seqid, new->cl_exchange_flags);
1303 status = nfs_ok;
1304
1305out:
1306 nfs4_unlock_state();
1307error:
1308 dprintk("nfsd4_exchange_id returns %d\n", ntohl(status));
1309 return status;
1310}
1311
1312static int
1313check_slot_seqid(u32 seqid, struct nfsd4_slot *slot)
1314{
1315 dprintk("%s enter. seqid %d slot->sl_seqid %d\n", __func__, seqid,
1316 slot->sl_seqid);
1317
1318 /* The slot is in use, and no response has been sent. */
1319 if (slot->sl_inuse) {
1320 if (seqid == slot->sl_seqid)
1321 return nfserr_jukebox;
1322 else
1323 return nfserr_seq_misordered;
1324 }
1325 /* Normal */
1326 if (likely(seqid == slot->sl_seqid + 1))
1327 return nfs_ok;
1328 /* Replay */
1329 if (seqid == slot->sl_seqid)
1330 return nfserr_replay_cache;
1331 /* Wraparound */
1332 if (seqid == 1 && (slot->sl_seqid + 1) == 0)
1333 return nfs_ok;
1334 /* Misordered replay or misordered new request */
1335 return nfserr_seq_misordered;
1336}
1337
1338__be32
1339nfsd4_create_session(struct svc_rqst *rqstp,
1340 struct nfsd4_compound_state *cstate,
1341 struct nfsd4_create_session *cr_ses)
1342{
1343 u32 ip_addr = svc_addr_in(rqstp)->sin_addr.s_addr;
1344 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1345 struct nfs4_client *conf, *unconf;
1346 struct nfsd4_slot *slot = NULL;
1347 int status = 0;
1348
1349 nfs4_lock_state();
1350 unconf = find_unconfirmed_client(&cr_ses->clientid);
1351 conf = find_confirmed_client(&cr_ses->clientid);
1352
1353 if (conf) {
1354 slot = &conf->cl_slot;
1355 status = check_slot_seqid(cr_ses->seqid, slot);
1356 if (status == nfserr_replay_cache) {
1357 dprintk("Got a create_session replay! seqid= %d\n",
1358 slot->sl_seqid);
1359 cstate->slot = slot;
1360 cstate->status = status;
1361 /* Return the cached reply status */
1362 status = nfsd4_replay_cache_entry(resp, NULL);
1363 goto out;
1364 } else if (cr_ses->seqid != conf->cl_slot.sl_seqid + 1) {
1365 status = nfserr_seq_misordered;
1366 dprintk("Sequence misordered!\n");
1367 dprintk("Expected seqid= %d but got seqid= %d\n",
1368 slot->sl_seqid, cr_ses->seqid);
1369 goto out;
1370 }
1371 conf->cl_slot.sl_seqid++;
1372 } else if (unconf) {
1373 if (!same_creds(&unconf->cl_cred, &rqstp->rq_cred) ||
1374 (ip_addr != unconf->cl_addr)) {
1375 status = nfserr_clid_inuse;
1376 goto out;
1377 }
1378
1379 slot = &unconf->cl_slot;
1380 status = check_slot_seqid(cr_ses->seqid, slot);
1381 if (status) {
1382 /* an unconfirmed replay returns misordered */
1383 status = nfserr_seq_misordered;
1384 goto out;
1385 }
1386
1387 slot->sl_seqid++; /* from 0 to 1 */
1388 move_to_confirmed(unconf);
1389
1390 /*
1391 * We do not support RDMA or persistent sessions
1392 */
1393 cr_ses->flags &= ~SESSION4_PERSIST;
1394 cr_ses->flags &= ~SESSION4_RDMA;
1395
1396 conf = unconf;
1397 } else {
1398 status = nfserr_stale_clientid;
1399 goto out;
1400 }
1401
1402 status = alloc_init_session(rqstp, conf, cr_ses);
1403 if (status)
1404 goto out;
1405
1406 memcpy(cr_ses->sessionid.data, conf->cl_sessionid.data,
1407 NFS4_MAX_SESSIONID_LEN);
1408 cr_ses->seqid = slot->sl_seqid;
1409
1410 slot->sl_inuse = true;
1411 cstate->slot = slot;
1412 /* Ensure a page is used for the cache */
1413 slot->sl_cache_entry.ce_cachethis = 1;
1414out:
1415 nfs4_unlock_state();
1416 dprintk("%s returns %d\n", __func__, ntohl(status));
1417 return status;
1418}
1419
1420__be32
1421nfsd4_destroy_session(struct svc_rqst *r,
1422 struct nfsd4_compound_state *cstate,
1423 struct nfsd4_destroy_session *sessionid)
1424{
1425 struct nfsd4_session *ses;
1426 u32 status = nfserr_badsession;
1427
1428 /* Notes:
1429 * - The confirmed nfs4_client->cl_sessionid holds destroyed sessinid
1430 * - Should we return nfserr_back_chan_busy if waiting for
1431 * callbacks on to-be-destroyed session?
1432 * - Do we need to clear any callback info from previous session?
1433 */
1434
1435 dump_sessionid(__func__, &sessionid->sessionid);
1436 spin_lock(&sessionid_lock);
1437 ses = find_in_sessionid_hashtbl(&sessionid->sessionid);
1438 if (!ses) {
1439 spin_unlock(&sessionid_lock);
1440 goto out;
1441 }
1442
1443 unhash_session(ses);
1444 spin_unlock(&sessionid_lock);
1445
1446 /* wait for callbacks */
1447 shutdown_callback_client(ses->se_client);
1448 nfsd4_put_session(ses);
1449 status = nfs_ok;
1450out:
1451 dprintk("%s returns %d\n", __func__, ntohl(status));
1452 return status;
1453}
1454
1455__be32
1456nfsd4_sequence(struct svc_rqst *rqstp,
1457 struct nfsd4_compound_state *cstate,
1458 struct nfsd4_sequence *seq)
1459{
1460 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1461 struct nfsd4_session *session;
1462 struct nfsd4_slot *slot;
1463 int status;
1464
1465 if (resp->opcnt != 1)
1466 return nfserr_sequence_pos;
1467
1468 spin_lock(&sessionid_lock);
1469 status = nfserr_badsession;
1470 session = find_in_sessionid_hashtbl(&seq->sessionid);
1471 if (!session)
1472 goto out;
1473
1474 status = nfserr_badslot;
1475 if (seq->slotid >= session->se_fnumslots)
1476 goto out;
1477
1478 slot = &session->se_slots[seq->slotid];
1479 dprintk("%s: slotid %d\n", __func__, seq->slotid);
1480
1481 status = check_slot_seqid(seq->seqid, slot);
1482 if (status == nfserr_replay_cache) {
1483 cstate->slot = slot;
1484 cstate->session = session;
1485 /* Return the cached reply status and set cstate->status
1486 * for nfsd4_svc_encode_compoundres processing */
1487 status = nfsd4_replay_cache_entry(resp, seq);
1488 cstate->status = nfserr_replay_cache;
1489 goto replay_cache;
1490 }
1491 if (status)
1492 goto out;
1493
1494 /* Success! bump slot seqid */
1495 slot->sl_inuse = true;
1496 slot->sl_seqid = seq->seqid;
1497 slot->sl_cache_entry.ce_cachethis = seq->cachethis;
1498 /* Always set the cache entry cachethis for solo sequence */
1499 if (nfsd4_is_solo_sequence(resp))
1500 slot->sl_cache_entry.ce_cachethis = 1;
1501
1502 cstate->slot = slot;
1503 cstate->session = session;
1504
1505replay_cache:
1506 /* Renew the clientid on success and on replay.
1507 * Hold a session reference until done processing the compound:
1508 * nfsd4_put_session called only if the cstate slot is set.
1509 */
1510 renew_client(session->se_client);
1511 nfsd4_get_session(session);
1512out:
1513 spin_unlock(&sessionid_lock);
1514 dprintk("%s: return %d\n", __func__, ntohl(status));
1515 return status;
1516}
1517
688__be32 1518__be32
689nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 1519nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
690 struct nfsd4_setclientid *setclid) 1520 struct nfsd4_setclientid *setclid)
@@ -716,14 +1546,13 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
716 strhashval = clientstr_hashval(dname); 1546 strhashval = clientstr_hashval(dname);
717 1547
718 nfs4_lock_state(); 1548 nfs4_lock_state();
719 conf = find_confirmed_client_by_str(dname, strhashval); 1549 conf = find_confirmed_client_by_str(dname, strhashval, false);
720 if (conf) { 1550 if (conf) {
721 /* RFC 3530 14.2.33 CASE 0: */ 1551 /* RFC 3530 14.2.33 CASE 0: */
722 status = nfserr_clid_inuse; 1552 status = nfserr_clid_inuse;
723 if (!same_creds(&conf->cl_cred, &rqstp->rq_cred) 1553 if (!same_creds(&conf->cl_cred, &rqstp->rq_cred)) {
724 || conf->cl_addr != sin->sin_addr.s_addr) { 1554 dprintk("NFSD: setclientid: string in use by client"
725 dprintk("NFSD: setclientid: string in use by clientat %pI4\n", 1555 " at %pI4\n", &conf->cl_addr);
726 &conf->cl_addr);
727 goto out; 1556 goto out;
728 } 1557 }
729 } 1558 }
@@ -732,7 +1561,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
732 * has a description of SETCLIENTID request processing consisting 1561 * has a description of SETCLIENTID request processing consisting
733 * of 5 bullet points, labeled as CASE0 - CASE4 below. 1562 * of 5 bullet points, labeled as CASE0 - CASE4 below.
734 */ 1563 */
735 unconf = find_unconfirmed_client_by_str(dname, strhashval); 1564 unconf = find_unconfirmed_client_by_str(dname, strhashval, false);
736 status = nfserr_resource; 1565 status = nfserr_resource;
737 if (!conf) { 1566 if (!conf) {
738 /* 1567 /*
@@ -887,7 +1716,7 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
887 unsigned int hash = 1716 unsigned int hash =
888 clientstr_hashval(unconf->cl_recdir); 1717 clientstr_hashval(unconf->cl_recdir);
889 conf = find_confirmed_client_by_str(unconf->cl_recdir, 1718 conf = find_confirmed_client_by_str(unconf->cl_recdir,
890 hash); 1719 hash, false);
891 if (conf) { 1720 if (conf) {
892 nfsd4_remove_clid_dir(conf); 1721 nfsd4_remove_clid_dir(conf);
893 expire_client(conf); 1722 expire_client(conf);
@@ -923,11 +1752,13 @@ alloc_init_file(struct inode *ino)
923 1752
924 fp = kmem_cache_alloc(file_slab, GFP_KERNEL); 1753 fp = kmem_cache_alloc(file_slab, GFP_KERNEL);
925 if (fp) { 1754 if (fp) {
926 kref_init(&fp->fi_ref); 1755 atomic_set(&fp->fi_ref, 1);
927 INIT_LIST_HEAD(&fp->fi_hash); 1756 INIT_LIST_HEAD(&fp->fi_hash);
928 INIT_LIST_HEAD(&fp->fi_stateids); 1757 INIT_LIST_HEAD(&fp->fi_stateids);
929 INIT_LIST_HEAD(&fp->fi_delegations); 1758 INIT_LIST_HEAD(&fp->fi_delegations);
1759 spin_lock(&recall_lock);
930 list_add(&fp->fi_hash, &file_hashtbl[hashval]); 1760 list_add(&fp->fi_hash, &file_hashtbl[hashval]);
1761 spin_unlock(&recall_lock);
931 fp->fi_inode = igrab(ino); 1762 fp->fi_inode = igrab(ino);
932 fp->fi_id = current_fileid++; 1763 fp->fi_id = current_fileid++;
933 fp->fi_had_conflict = false; 1764 fp->fi_had_conflict = false;
@@ -1037,48 +1868,6 @@ alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp, str
1037 return sop; 1868 return sop;
1038} 1869}
1039 1870
1040static void
1041release_stateid_lockowners(struct nfs4_stateid *open_stp)
1042{
1043 struct nfs4_stateowner *lock_sop;
1044
1045 while (!list_empty(&open_stp->st_lockowners)) {
1046 lock_sop = list_entry(open_stp->st_lockowners.next,
1047 struct nfs4_stateowner, so_perstateid);
1048 /* list_del(&open_stp->st_lockowners); */
1049 BUG_ON(lock_sop->so_is_open_owner);
1050 release_stateowner(lock_sop);
1051 }
1052}
1053
1054static void
1055unhash_stateowner(struct nfs4_stateowner *sop)
1056{
1057 struct nfs4_stateid *stp;
1058
1059 list_del(&sop->so_idhash);
1060 list_del(&sop->so_strhash);
1061 if (sop->so_is_open_owner)
1062 list_del(&sop->so_perclient);
1063 list_del(&sop->so_perstateid);
1064 while (!list_empty(&sop->so_stateids)) {
1065 stp = list_entry(sop->so_stateids.next,
1066 struct nfs4_stateid, st_perstateowner);
1067 if (sop->so_is_open_owner)
1068 release_stateid(stp, OPEN_STATE);
1069 else
1070 release_stateid(stp, LOCK_STATE);
1071 }
1072}
1073
1074static void
1075release_stateowner(struct nfs4_stateowner *sop)
1076{
1077 unhash_stateowner(sop);
1078 list_del(&sop->so_close_lru);
1079 nfs4_put_stateowner(sop);
1080}
1081
1082static inline void 1871static inline void
1083init_stateid(struct nfs4_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) { 1872init_stateid(struct nfs4_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {
1084 struct nfs4_stateowner *sop = open->op_stateowner; 1873 struct nfs4_stateowner *sop = open->op_stateowner;
@@ -1100,30 +1889,13 @@ init_stateid(struct nfs4_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *
1100 stp->st_stateid.si_generation = 0; 1889 stp->st_stateid.si_generation = 0;
1101 stp->st_access_bmap = 0; 1890 stp->st_access_bmap = 0;
1102 stp->st_deny_bmap = 0; 1891 stp->st_deny_bmap = 0;
1103 __set_bit(open->op_share_access, &stp->st_access_bmap); 1892 __set_bit(open->op_share_access & ~NFS4_SHARE_WANT_MASK,
1893 &stp->st_access_bmap);
1104 __set_bit(open->op_share_deny, &stp->st_deny_bmap); 1894 __set_bit(open->op_share_deny, &stp->st_deny_bmap);
1105 stp->st_openstp = NULL; 1895 stp->st_openstp = NULL;
1106} 1896}
1107 1897
1108static void 1898static void
1109release_stateid(struct nfs4_stateid *stp, int flags)
1110{
1111 struct file *filp = stp->st_vfs_file;
1112
1113 list_del(&stp->st_hash);
1114 list_del(&stp->st_perfile);
1115 list_del(&stp->st_perstateowner);
1116 if (flags & OPEN_STATE) {
1117 release_stateid_lockowners(stp);
1118 stp->st_vfs_file = NULL;
1119 nfsd_close(filp);
1120 } else if (flags & LOCK_STATE)
1121 locks_remove_posix(filp, (fl_owner_t) stp->st_stateowner);
1122 put_nfs4_file(stp->st_file);
1123 kmem_cache_free(stateid_slab, stp);
1124}
1125
1126static void
1127move_to_close_lru(struct nfs4_stateowner *sop) 1899move_to_close_lru(struct nfs4_stateowner *sop)
1128{ 1900{
1129 dprintk("NFSD: move_to_close_lru nfs4_stateowner %p\n", sop); 1901 dprintk("NFSD: move_to_close_lru nfs4_stateowner %p\n", sop);
@@ -1160,20 +1932,33 @@ find_file(struct inode *ino)
1160 unsigned int hashval = file_hashval(ino); 1932 unsigned int hashval = file_hashval(ino);
1161 struct nfs4_file *fp; 1933 struct nfs4_file *fp;
1162 1934
1935 spin_lock(&recall_lock);
1163 list_for_each_entry(fp, &file_hashtbl[hashval], fi_hash) { 1936 list_for_each_entry(fp, &file_hashtbl[hashval], fi_hash) {
1164 if (fp->fi_inode == ino) { 1937 if (fp->fi_inode == ino) {
1165 get_nfs4_file(fp); 1938 get_nfs4_file(fp);
1939 spin_unlock(&recall_lock);
1166 return fp; 1940 return fp;
1167 } 1941 }
1168 } 1942 }
1943 spin_unlock(&recall_lock);
1169 return NULL; 1944 return NULL;
1170} 1945}
1171 1946
1172static inline int access_valid(u32 x) 1947static inline int access_valid(u32 x, u32 minorversion)
1173{ 1948{
1174 if (x < NFS4_SHARE_ACCESS_READ) 1949 if ((x & NFS4_SHARE_ACCESS_MASK) < NFS4_SHARE_ACCESS_READ)
1175 return 0; 1950 return 0;
1176 if (x > NFS4_SHARE_ACCESS_BOTH) 1951 if ((x & NFS4_SHARE_ACCESS_MASK) > NFS4_SHARE_ACCESS_BOTH)
1952 return 0;
1953 x &= ~NFS4_SHARE_ACCESS_MASK;
1954 if (minorversion && x) {
1955 if ((x & NFS4_SHARE_WANT_MASK) > NFS4_SHARE_WANT_CANCEL)
1956 return 0;
1957 if ((x & NFS4_SHARE_WHEN_MASK) > NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED)
1958 return 0;
1959 x &= ~(NFS4_SHARE_WANT_MASK | NFS4_SHARE_WHEN_MASK);
1960 }
1961 if (x)
1177 return 0; 1962 return 0;
1178 return 1; 1963 return 1;
1179} 1964}
@@ -1409,7 +2194,8 @@ static struct lock_manager_operations nfsd_lease_mng_ops = {
1409 2194
1410 2195
1411__be32 2196__be32
1412nfsd4_process_open1(struct nfsd4_open *open) 2197nfsd4_process_open1(struct nfsd4_compound_state *cstate,
2198 struct nfsd4_open *open)
1413{ 2199{
1414 clientid_t *clientid = &open->op_clientid; 2200 clientid_t *clientid = &open->op_clientid;
1415 struct nfs4_client *clp = NULL; 2201 struct nfs4_client *clp = NULL;
@@ -1432,10 +2218,13 @@ nfsd4_process_open1(struct nfsd4_open *open)
1432 return nfserr_expired; 2218 return nfserr_expired;
1433 goto renew; 2219 goto renew;
1434 } 2220 }
2221 /* When sessions are used, skip open sequenceid processing */
2222 if (nfsd4_has_session(cstate))
2223 goto renew;
1435 if (!sop->so_confirmed) { 2224 if (!sop->so_confirmed) {
1436 /* Replace unconfirmed owners without checking for replay. */ 2225 /* Replace unconfirmed owners without checking for replay. */
1437 clp = sop->so_client; 2226 clp = sop->so_client;
1438 release_stateowner(sop); 2227 release_openowner(sop);
1439 open->op_stateowner = NULL; 2228 open->op_stateowner = NULL;
1440 goto renew; 2229 goto renew;
1441 } 2230 }
@@ -1709,6 +2498,7 @@ out:
1709__be32 2498__be32
1710nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) 2499nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
1711{ 2500{
2501 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1712 struct nfs4_file *fp = NULL; 2502 struct nfs4_file *fp = NULL;
1713 struct inode *ino = current_fh->fh_dentry->d_inode; 2503 struct inode *ino = current_fh->fh_dentry->d_inode;
1714 struct nfs4_stateid *stp = NULL; 2504 struct nfs4_stateid *stp = NULL;
@@ -1716,7 +2506,7 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
1716 __be32 status; 2506 __be32 status;
1717 2507
1718 status = nfserr_inval; 2508 status = nfserr_inval;
1719 if (!access_valid(open->op_share_access) 2509 if (!access_valid(open->op_share_access, resp->cstate.minorversion)
1720 || !deny_valid(open->op_share_deny)) 2510 || !deny_valid(open->op_share_deny))
1721 goto out; 2511 goto out;
1722 /* 2512 /*
@@ -1764,12 +2554,17 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
1764 init_stateid(stp, fp, open); 2554 init_stateid(stp, fp, open);
1765 status = nfsd4_truncate(rqstp, current_fh, open); 2555 status = nfsd4_truncate(rqstp, current_fh, open);
1766 if (status) { 2556 if (status) {
1767 release_stateid(stp, OPEN_STATE); 2557 release_open_stateid(stp);
1768 goto out; 2558 goto out;
1769 } 2559 }
2560 if (nfsd4_has_session(&resp->cstate))
2561 update_stateid(&stp->st_stateid);
1770 } 2562 }
1771 memcpy(&open->op_stateid, &stp->st_stateid, sizeof(stateid_t)); 2563 memcpy(&open->op_stateid, &stp->st_stateid, sizeof(stateid_t));
1772 2564
2565 if (nfsd4_has_session(&resp->cstate))
2566 open->op_stateowner->so_confirmed = 1;
2567
1773 /* 2568 /*
1774 * Attempt to hand out a delegation. No error return, because the 2569 * Attempt to hand out a delegation. No error return, because the
1775 * OPEN succeeds even if we fail. 2570 * OPEN succeeds even if we fail.
@@ -1790,7 +2585,8 @@ out:
1790 * To finish the open response, we just need to set the rflags. 2585 * To finish the open response, we just need to set the rflags.
1791 */ 2586 */
1792 open->op_rflags = NFS4_OPEN_RESULT_LOCKTYPE_POSIX; 2587 open->op_rflags = NFS4_OPEN_RESULT_LOCKTYPE_POSIX;
1793 if (!open->op_stateowner->so_confirmed) 2588 if (!open->op_stateowner->so_confirmed &&
2589 !nfsd4_has_session(&resp->cstate))
1794 open->op_rflags |= NFS4_OPEN_RESULT_CONFIRM; 2590 open->op_rflags |= NFS4_OPEN_RESULT_CONFIRM;
1795 2591
1796 return status; 2592 return status;
@@ -1898,7 +2694,7 @@ nfs4_laundromat(void)
1898 } 2694 }
1899 dprintk("NFSD: purging unused open stateowner (so_id %d)\n", 2695 dprintk("NFSD: purging unused open stateowner (so_id %d)\n",
1900 sop->so_id); 2696 sop->so_id);
1901 release_stateowner(sop); 2697 release_openowner(sop);
1902 } 2698 }
1903 if (clientid_val < NFSD_LAUNDROMAT_MINTIMEOUT) 2699 if (clientid_val < NFSD_LAUNDROMAT_MINTIMEOUT)
1904 clientid_val = NFSD_LAUNDROMAT_MINTIMEOUT; 2700 clientid_val = NFSD_LAUNDROMAT_MINTIMEOUT;
@@ -1983,10 +2779,7 @@ out:
1983static inline __be32 2779static inline __be32
1984check_special_stateids(svc_fh *current_fh, stateid_t *stateid, int flags) 2780check_special_stateids(svc_fh *current_fh, stateid_t *stateid, int flags)
1985{ 2781{
1986 /* Trying to call delegreturn with a special stateid? Yuch: */ 2782 if (ONE_STATEID(stateid) && (flags & RD_STATE))
1987 if (!(flags & (RD_STATE | WR_STATE)))
1988 return nfserr_bad_stateid;
1989 else if (ONE_STATEID(stateid) && (flags & RD_STATE))
1990 return nfs_ok; 2783 return nfs_ok;
1991 else if (locks_in_grace()) { 2784 else if (locks_in_grace()) {
1992 /* Answer in remaining cases depends on existance of 2785 /* Answer in remaining cases depends on existance of
@@ -2005,14 +2798,20 @@ check_special_stateids(svc_fh *current_fh, stateid_t *stateid, int flags)
2005 * that are not able to provide mandatory locking. 2798 * that are not able to provide mandatory locking.
2006 */ 2799 */
2007static inline int 2800static inline int
2008io_during_grace_disallowed(struct inode *inode, int flags) 2801grace_disallows_io(struct inode *inode)
2009{ 2802{
2010 return locks_in_grace() && (flags & (RD_STATE | WR_STATE)) 2803 return locks_in_grace() && mandatory_lock(inode);
2011 && mandatory_lock(inode);
2012} 2804}
2013 2805
2014static int check_stateid_generation(stateid_t *in, stateid_t *ref) 2806static int check_stateid_generation(stateid_t *in, stateid_t *ref, int flags)
2015{ 2807{
2808 /*
2809 * When sessions are used the stateid generation number is ignored
2810 * when it is zero.
2811 */
2812 if ((flags & HAS_SESSION) && in->si_generation == 0)
2813 goto out;
2814
2016 /* If the client sends us a stateid from the future, it's buggy: */ 2815 /* If the client sends us a stateid from the future, it's buggy: */
2017 if (in->si_generation > ref->si_generation) 2816 if (in->si_generation > ref->si_generation)
2018 return nfserr_bad_stateid; 2817 return nfserr_bad_stateid;
@@ -2028,74 +2827,77 @@ static int check_stateid_generation(stateid_t *in, stateid_t *ref)
2028 */ 2827 */
2029 if (in->si_generation < ref->si_generation) 2828 if (in->si_generation < ref->si_generation)
2030 return nfserr_old_stateid; 2829 return nfserr_old_stateid;
2830out:
2031 return nfs_ok; 2831 return nfs_ok;
2032} 2832}
2033 2833
2834static int is_delegation_stateid(stateid_t *stateid)
2835{
2836 return stateid->si_fileid == 0;
2837}
2838
2034/* 2839/*
2035* Checks for stateid operations 2840* Checks for stateid operations
2036*/ 2841*/
2037__be32 2842__be32
2038nfs4_preprocess_stateid_op(struct svc_fh *current_fh, stateid_t *stateid, int flags, struct file **filpp) 2843nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
2844 stateid_t *stateid, int flags, struct file **filpp)
2039{ 2845{
2040 struct nfs4_stateid *stp = NULL; 2846 struct nfs4_stateid *stp = NULL;
2041 struct nfs4_delegation *dp = NULL; 2847 struct nfs4_delegation *dp = NULL;
2042 stateid_t *stidp; 2848 struct svc_fh *current_fh = &cstate->current_fh;
2043 struct inode *ino = current_fh->fh_dentry->d_inode; 2849 struct inode *ino = current_fh->fh_dentry->d_inode;
2044 __be32 status; 2850 __be32 status;
2045 2851
2046 dprintk("NFSD: preprocess_stateid_op: stateid = (%08x/%08x/%08x/%08x)\n",
2047 stateid->si_boot, stateid->si_stateownerid,
2048 stateid->si_fileid, stateid->si_generation);
2049 if (filpp) 2852 if (filpp)
2050 *filpp = NULL; 2853 *filpp = NULL;
2051 2854
2052 if (io_during_grace_disallowed(ino, flags)) 2855 if (grace_disallows_io(ino))
2053 return nfserr_grace; 2856 return nfserr_grace;
2054 2857
2858 if (nfsd4_has_session(cstate))
2859 flags |= HAS_SESSION;
2860
2055 if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) 2861 if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
2056 return check_special_stateids(current_fh, stateid, flags); 2862 return check_special_stateids(current_fh, stateid, flags);
2057 2863
2058 /* STALE STATEID */
2059 status = nfserr_stale_stateid; 2864 status = nfserr_stale_stateid;
2060 if (STALE_STATEID(stateid)) 2865 if (STALE_STATEID(stateid))
2061 goto out; 2866 goto out;
2062 2867
2063 /* BAD STATEID */
2064 status = nfserr_bad_stateid; 2868 status = nfserr_bad_stateid;
2065 if (!stateid->si_fileid) { /* delegation stateid */ 2869 if (is_delegation_stateid(stateid)) {
2066 if(!(dp = find_delegation_stateid(ino, stateid))) { 2870 dp = find_delegation_stateid(ino, stateid);
2067 dprintk("NFSD: delegation stateid not found\n"); 2871 if (!dp)
2068 goto out; 2872 goto out;
2069 } 2873 status = check_stateid_generation(stateid, &dp->dl_stateid,
2070 stidp = &dp->dl_stateid; 2874 flags);
2875 if (status)
2876 goto out;
2877 status = nfs4_check_delegmode(dp, flags);
2878 if (status)
2879 goto out;
2880 renew_client(dp->dl_client);
2881 if (filpp)
2882 *filpp = dp->dl_vfs_file;
2071 } else { /* open or lock stateid */ 2883 } else { /* open or lock stateid */
2072 if (!(stp = find_stateid(stateid, flags))) { 2884 stp = find_stateid(stateid, flags);
2073 dprintk("NFSD: open or lock stateid not found\n"); 2885 if (!stp)
2074 goto out; 2886 goto out;
2075 } 2887 if (nfs4_check_fh(current_fh, stp))
2076 if ((flags & CHECK_FH) && nfs4_check_fh(current_fh, stp))
2077 goto out; 2888 goto out;
2078 if (!stp->st_stateowner->so_confirmed) 2889 if (!stp->st_stateowner->so_confirmed)
2079 goto out; 2890 goto out;
2080 stidp = &stp->st_stateid; 2891 status = check_stateid_generation(stateid, &stp->st_stateid,
2081 } 2892 flags);
2082 status = check_stateid_generation(stateid, stidp); 2893 if (status)
2083 if (status) 2894 goto out;
2084 goto out; 2895 status = nfs4_check_openmode(stp, flags);
2085 if (stp) { 2896 if (status)
2086 if ((status = nfs4_check_openmode(stp,flags)))
2087 goto out; 2897 goto out;
2088 renew_client(stp->st_stateowner->so_client); 2898 renew_client(stp->st_stateowner->so_client);
2089 if (filpp) 2899 if (filpp)
2090 *filpp = stp->st_vfs_file; 2900 *filpp = stp->st_vfs_file;
2091 } else {
2092 if ((status = nfs4_check_delegmode(dp, flags)))
2093 goto out;
2094 renew_client(dp->dl_client);
2095 if (flags & DELEG_RET)
2096 unhash_delegation(dp);
2097 if (filpp)
2098 *filpp = dp->dl_vfs_file;
2099 } 2901 }
2100 status = nfs_ok; 2902 status = nfs_ok;
2101out: 2903out:
@@ -2113,10 +2915,14 @@ setlkflg (int type)
2113 * Checks for sequence id mutating operations. 2915 * Checks for sequence id mutating operations.
2114 */ 2916 */
2115static __be32 2917static __be32
2116nfs4_preprocess_seqid_op(struct svc_fh *current_fh, u32 seqid, stateid_t *stateid, int flags, struct nfs4_stateowner **sopp, struct nfs4_stateid **stpp, struct nfsd4_lock *lock) 2918nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
2919 stateid_t *stateid, int flags,
2920 struct nfs4_stateowner **sopp,
2921 struct nfs4_stateid **stpp, struct nfsd4_lock *lock)
2117{ 2922{
2118 struct nfs4_stateid *stp; 2923 struct nfs4_stateid *stp;
2119 struct nfs4_stateowner *sop; 2924 struct nfs4_stateowner *sop;
2925 struct svc_fh *current_fh = &cstate->current_fh;
2120 __be32 status; 2926 __be32 status;
2121 2927
2122 dprintk("NFSD: preprocess_seqid_op: seqid=%d " 2928 dprintk("NFSD: preprocess_seqid_op: seqid=%d "
@@ -2134,6 +2940,10 @@ nfs4_preprocess_seqid_op(struct svc_fh *current_fh, u32 seqid, stateid_t *statei
2134 2940
2135 if (STALE_STATEID(stateid)) 2941 if (STALE_STATEID(stateid))
2136 return nfserr_stale_stateid; 2942 return nfserr_stale_stateid;
2943
2944 if (nfsd4_has_session(cstate))
2945 flags |= HAS_SESSION;
2946
2137 /* 2947 /*
2138 * We return BAD_STATEID if filehandle doesn't match stateid, 2948 * We return BAD_STATEID if filehandle doesn't match stateid,
2139 * the confirmed flag is incorrecly set, or the generation 2949 * the confirmed flag is incorrecly set, or the generation
@@ -2166,8 +2976,9 @@ nfs4_preprocess_seqid_op(struct svc_fh *current_fh, u32 seqid, stateid_t *statei
2166 if (lock->lk_is_new) { 2976 if (lock->lk_is_new) {
2167 if (!sop->so_is_open_owner) 2977 if (!sop->so_is_open_owner)
2168 return nfserr_bad_stateid; 2978 return nfserr_bad_stateid;
2169 if (!same_clid(&clp->cl_clientid, lockclid)) 2979 if (!(flags & HAS_SESSION) &&
2170 return nfserr_bad_stateid; 2980 !same_clid(&clp->cl_clientid, lockclid))
2981 return nfserr_bad_stateid;
2171 /* stp is the open stateid */ 2982 /* stp is the open stateid */
2172 status = nfs4_check_openmode(stp, lkflg); 2983 status = nfs4_check_openmode(stp, lkflg);
2173 if (status) 2984 if (status)
@@ -2190,7 +3001,7 @@ nfs4_preprocess_seqid_op(struct svc_fh *current_fh, u32 seqid, stateid_t *statei
2190 * For the moment, we ignore the possibility of 3001 * For the moment, we ignore the possibility of
2191 * generation number wraparound. 3002 * generation number wraparound.
2192 */ 3003 */
2193 if (seqid != sop->so_seqid) 3004 if (!(flags & HAS_SESSION) && seqid != sop->so_seqid)
2194 goto check_replay; 3005 goto check_replay;
2195 3006
2196 if (sop->so_confirmed && flags & CONFIRM) { 3007 if (sop->so_confirmed && flags & CONFIRM) {
@@ -2203,7 +3014,7 @@ nfs4_preprocess_seqid_op(struct svc_fh *current_fh, u32 seqid, stateid_t *statei
2203 " confirmed yet!\n"); 3014 " confirmed yet!\n");
2204 return nfserr_bad_stateid; 3015 return nfserr_bad_stateid;
2205 } 3016 }
2206 status = check_stateid_generation(stateid, &stp->st_stateid); 3017 status = check_stateid_generation(stateid, &stp->st_stateid, flags);
2207 if (status) 3018 if (status)
2208 return status; 3019 return status;
2209 renew_client(sop->so_client); 3020 renew_client(sop->so_client);
@@ -2239,7 +3050,7 @@ nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
2239 3050
2240 nfs4_lock_state(); 3051 nfs4_lock_state();
2241 3052
2242 if ((status = nfs4_preprocess_seqid_op(&cstate->current_fh, 3053 if ((status = nfs4_preprocess_seqid_op(cstate,
2243 oc->oc_seqid, &oc->oc_req_stateid, 3054 oc->oc_seqid, &oc->oc_req_stateid,
2244 CONFIRM | OPEN_STATE, 3055 CONFIRM | OPEN_STATE,
2245 &oc->oc_stateowner, &stp, NULL))) 3056 &oc->oc_stateowner, &stp, NULL)))
@@ -2304,12 +3115,12 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp,
2304 (int)cstate->current_fh.fh_dentry->d_name.len, 3115 (int)cstate->current_fh.fh_dentry->d_name.len,
2305 cstate->current_fh.fh_dentry->d_name.name); 3116 cstate->current_fh.fh_dentry->d_name.name);
2306 3117
2307 if (!access_valid(od->od_share_access) 3118 if (!access_valid(od->od_share_access, cstate->minorversion)
2308 || !deny_valid(od->od_share_deny)) 3119 || !deny_valid(od->od_share_deny))
2309 return nfserr_inval; 3120 return nfserr_inval;
2310 3121
2311 nfs4_lock_state(); 3122 nfs4_lock_state();
2312 if ((status = nfs4_preprocess_seqid_op(&cstate->current_fh, 3123 if ((status = nfs4_preprocess_seqid_op(cstate,
2313 od->od_seqid, 3124 od->od_seqid,
2314 &od->od_stateid, 3125 &od->od_stateid,
2315 OPEN_STATE, 3126 OPEN_STATE,
@@ -2362,7 +3173,7 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
2362 3173
2363 nfs4_lock_state(); 3174 nfs4_lock_state();
2364 /* check close_lru for replay */ 3175 /* check close_lru for replay */
2365 if ((status = nfs4_preprocess_seqid_op(&cstate->current_fh, 3176 if ((status = nfs4_preprocess_seqid_op(cstate,
2366 close->cl_seqid, 3177 close->cl_seqid,
2367 &close->cl_stateid, 3178 &close->cl_stateid,
2368 OPEN_STATE | CLOSE_STATE, 3179 OPEN_STATE | CLOSE_STATE,
@@ -2373,7 +3184,7 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
2373 memcpy(&close->cl_stateid, &stp->st_stateid, sizeof(stateid_t)); 3184 memcpy(&close->cl_stateid, &stp->st_stateid, sizeof(stateid_t));
2374 3185
2375 /* release_stateid() calls nfsd_close() if needed */ 3186 /* release_stateid() calls nfsd_close() if needed */
2376 release_stateid(stp, OPEN_STATE); 3187 release_open_stateid(stp);
2377 3188
2378 /* place unused nfs4_stateowners on so_close_lru list to be 3189 /* place unused nfs4_stateowners on so_close_lru list to be
2379 * released by the laundromat service after the lease period 3190 * released by the laundromat service after the lease period
@@ -2394,16 +3205,40 @@ __be32
2394nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, 3205nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
2395 struct nfsd4_delegreturn *dr) 3206 struct nfsd4_delegreturn *dr)
2396{ 3207{
3208 struct nfs4_delegation *dp;
3209 stateid_t *stateid = &dr->dr_stateid;
3210 struct inode *inode;
2397 __be32 status; 3211 __be32 status;
3212 int flags = 0;
2398 3213
2399 if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0))) 3214 if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0)))
2400 goto out; 3215 return status;
3216 inode = cstate->current_fh.fh_dentry->d_inode;
2401 3217
3218 if (nfsd4_has_session(cstate))
3219 flags |= HAS_SESSION;
2402 nfs4_lock_state(); 3220 nfs4_lock_state();
2403 status = nfs4_preprocess_stateid_op(&cstate->current_fh, 3221 status = nfserr_bad_stateid;
2404 &dr->dr_stateid, DELEG_RET, NULL); 3222 if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
2405 nfs4_unlock_state(); 3223 goto out;
3224 status = nfserr_stale_stateid;
3225 if (STALE_STATEID(stateid))
3226 goto out;
3227 status = nfserr_bad_stateid;
3228 if (!is_delegation_stateid(stateid))
3229 goto out;
3230 dp = find_delegation_stateid(inode, stateid);
3231 if (!dp)
3232 goto out;
3233 status = check_stateid_generation(stateid, &dp->dl_stateid, flags);
3234 if (status)
3235 goto out;
3236 renew_client(dp->dl_client);
3237
3238 unhash_delegation(dp);
2406out: 3239out:
3240 nfs4_unlock_state();
3241
2407 return status; 3242 return status;
2408} 3243}
2409 3244
@@ -2684,11 +3519,12 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
2684 struct nfs4_file *fp; 3519 struct nfs4_file *fp;
2685 3520
2686 status = nfserr_stale_clientid; 3521 status = nfserr_stale_clientid;
2687 if (STALE_CLIENTID(&lock->lk_new_clientid)) 3522 if (!nfsd4_has_session(cstate) &&
3523 STALE_CLIENTID(&lock->lk_new_clientid))
2688 goto out; 3524 goto out;
2689 3525
2690 /* validate and update open stateid and open seqid */ 3526 /* validate and update open stateid and open seqid */
2691 status = nfs4_preprocess_seqid_op(&cstate->current_fh, 3527 status = nfs4_preprocess_seqid_op(cstate,
2692 lock->lk_new_open_seqid, 3528 lock->lk_new_open_seqid,
2693 &lock->lk_new_open_stateid, 3529 &lock->lk_new_open_stateid,
2694 OPEN_STATE, 3530 OPEN_STATE,
@@ -2715,7 +3551,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
2715 goto out; 3551 goto out;
2716 } else { 3552 } else {
2717 /* lock (lock owner + lock stateid) already exists */ 3553 /* lock (lock owner + lock stateid) already exists */
2718 status = nfs4_preprocess_seqid_op(&cstate->current_fh, 3554 status = nfs4_preprocess_seqid_op(cstate,
2719 lock->lk_old_lock_seqid, 3555 lock->lk_old_lock_seqid,
2720 &lock->lk_old_lock_stateid, 3556 &lock->lk_old_lock_stateid,
2721 LOCK_STATE, 3557 LOCK_STATE,
@@ -2788,7 +3624,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
2788 } 3624 }
2789out: 3625out:
2790 if (status && lock->lk_is_new && lock_sop) 3626 if (status && lock->lk_is_new && lock_sop)
2791 release_stateowner(lock_sop); 3627 release_lockowner(lock_sop);
2792 if (lock->lk_replay_owner) { 3628 if (lock->lk_replay_owner) {
2793 nfs4_get_stateowner(lock->lk_replay_owner); 3629 nfs4_get_stateowner(lock->lk_replay_owner);
2794 cstate->replay_owner = lock->lk_replay_owner; 3630 cstate->replay_owner = lock->lk_replay_owner;
@@ -2838,7 +3674,7 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
2838 nfs4_lock_state(); 3674 nfs4_lock_state();
2839 3675
2840 status = nfserr_stale_clientid; 3676 status = nfserr_stale_clientid;
2841 if (STALE_CLIENTID(&lockt->lt_clientid)) 3677 if (!nfsd4_has_session(cstate) && STALE_CLIENTID(&lockt->lt_clientid))
2842 goto out; 3678 goto out;
2843 3679
2844 if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0))) { 3680 if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0))) {
@@ -2911,7 +3747,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
2911 3747
2912 nfs4_lock_state(); 3748 nfs4_lock_state();
2913 3749
2914 if ((status = nfs4_preprocess_seqid_op(&cstate->current_fh, 3750 if ((status = nfs4_preprocess_seqid_op(cstate,
2915 locku->lu_seqid, 3751 locku->lu_seqid,
2916 &locku->lu_stateid, 3752 &locku->lu_stateid,
2917 LOCK_STATE, 3753 LOCK_STATE,
@@ -3037,7 +3873,7 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
3037 /* unhash_stateowner deletes so_perclient only 3873 /* unhash_stateowner deletes so_perclient only
3038 * for openowners. */ 3874 * for openowners. */
3039 list_del(&sop->so_perclient); 3875 list_del(&sop->so_perclient);
3040 release_stateowner(sop); 3876 release_lockowner(sop);
3041 } 3877 }
3042out: 3878out:
3043 nfs4_unlock_state(); 3879 nfs4_unlock_state();
@@ -3051,12 +3887,12 @@ alloc_reclaim(void)
3051} 3887}
3052 3888
3053int 3889int
3054nfs4_has_reclaimed_state(const char *name) 3890nfs4_has_reclaimed_state(const char *name, bool use_exchange_id)
3055{ 3891{
3056 unsigned int strhashval = clientstr_hashval(name); 3892 unsigned int strhashval = clientstr_hashval(name);
3057 struct nfs4_client *clp; 3893 struct nfs4_client *clp;
3058 3894
3059 clp = find_confirmed_client_by_str(name, strhashval); 3895 clp = find_confirmed_client_by_str(name, strhashval, use_exchange_id);
3060 return clp ? 1 : 0; 3896 return clp ? 1 : 0;
3061} 3897}
3062 3898
@@ -3153,6 +3989,8 @@ nfs4_state_init(void)
3153 INIT_LIST_HEAD(&unconf_str_hashtbl[i]); 3989 INIT_LIST_HEAD(&unconf_str_hashtbl[i]);
3154 INIT_LIST_HEAD(&unconf_id_hashtbl[i]); 3990 INIT_LIST_HEAD(&unconf_id_hashtbl[i]);
3155 } 3991 }
3992 for (i = 0; i < SESSION_HASH_SIZE; i++)
3993 INIT_LIST_HEAD(&sessionid_hashtbl[i]);
3156 for (i = 0; i < FILE_HASH_SIZE; i++) { 3994 for (i = 0; i < FILE_HASH_SIZE; i++) {
3157 INIT_LIST_HEAD(&file_hashtbl[i]); 3995 INIT_LIST_HEAD(&file_hashtbl[i]);
3158 } 3996 }
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 9250067943d8..b820c311931c 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -45,6 +45,7 @@
45#include <linux/fs.h> 45#include <linux/fs.h>
46#include <linux/namei.h> 46#include <linux/namei.h>
47#include <linux/vfs.h> 47#include <linux/vfs.h>
48#include <linux/utsname.h>
48#include <linux/sunrpc/xdr.h> 49#include <linux/sunrpc/xdr.h>
49#include <linux/sunrpc/svc.h> 50#include <linux/sunrpc/svc.h>
50#include <linux/sunrpc/clnt.h> 51#include <linux/sunrpc/clnt.h>
@@ -188,6 +189,11 @@ static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)
188 return p; 189 return p;
189} 190}
190 191
192static int zero_clientid(clientid_t *clid)
193{
194 return (clid->cl_boot == 0) && (clid->cl_id == 0);
195}
196
191static int 197static int
192defer_free(struct nfsd4_compoundargs *argp, 198defer_free(struct nfsd4_compoundargs *argp,
193 void (*release)(const void *), void *p) 199 void (*release)(const void *), void *p)
@@ -230,6 +236,7 @@ nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval)
230 236
231 bmval[0] = 0; 237 bmval[0] = 0;
232 bmval[1] = 0; 238 bmval[1] = 0;
239 bmval[2] = 0;
233 240
234 READ_BUF(4); 241 READ_BUF(4);
235 READ32(bmlen); 242 READ32(bmlen);
@@ -241,13 +248,27 @@ nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval)
241 READ32(bmval[0]); 248 READ32(bmval[0]);
242 if (bmlen > 1) 249 if (bmlen > 1)
243 READ32(bmval[1]); 250 READ32(bmval[1]);
251 if (bmlen > 2)
252 READ32(bmval[2]);
244 253
245 DECODE_TAIL; 254 DECODE_TAIL;
246} 255}
247 256
257static u32 nfsd_attrmask[] = {
258 NFSD_WRITEABLE_ATTRS_WORD0,
259 NFSD_WRITEABLE_ATTRS_WORD1,
260 NFSD_WRITEABLE_ATTRS_WORD2
261};
262
263static u32 nfsd41_ex_attrmask[] = {
264 NFSD_SUPPATTR_EXCLCREAT_WORD0,
265 NFSD_SUPPATTR_EXCLCREAT_WORD1,
266 NFSD_SUPPATTR_EXCLCREAT_WORD2
267};
268
248static __be32 269static __be32
249nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *iattr, 270nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, u32 *writable,
250 struct nfs4_acl **acl) 271 struct iattr *iattr, struct nfs4_acl **acl)
251{ 272{
252 int expected_len, len = 0; 273 int expected_len, len = 0;
253 u32 dummy32; 274 u32 dummy32;
@@ -263,9 +284,12 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *ia
263 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP; 284 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP;
264 * read-only attributes return ERR_INVAL. 285 * read-only attributes return ERR_INVAL.
265 */ 286 */
266 if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) 287 if ((bmval[0] & ~nfsd_suppattrs0(argp->minorversion)) ||
288 (bmval[1] & ~nfsd_suppattrs1(argp->minorversion)) ||
289 (bmval[2] & ~nfsd_suppattrs2(argp->minorversion)))
267 return nfserr_attrnotsupp; 290 return nfserr_attrnotsupp;
268 if ((bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0) || (bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1)) 291 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
292 (bmval[2] & ~writable[2]))
269 return nfserr_inval; 293 return nfserr_inval;
270 294
271 READ_BUF(4); 295 READ_BUF(4);
@@ -400,6 +424,7 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *ia
400 goto xdr_error; 424 goto xdr_error;
401 } 425 }
402 } 426 }
427 BUG_ON(bmval[2]); /* no such writeable attr supported yet */
403 if (len != expected_len) 428 if (len != expected_len)
404 goto xdr_error; 429 goto xdr_error;
405 430
@@ -493,7 +518,9 @@ nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create
493 if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) 518 if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval)))
494 return status; 519 return status;
495 520
496 if ((status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, &create->cr_acl))) 521 status = nfsd4_decode_fattr(argp, create->cr_bmval, nfsd_attrmask,
522 &create->cr_iattr, &create->cr_acl);
523 if (status)
497 goto out; 524 goto out;
498 525
499 DECODE_TAIL; 526 DECODE_TAIL;
@@ -583,6 +610,8 @@ nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt)
583 READ_BUF(lockt->lt_owner.len); 610 READ_BUF(lockt->lt_owner.len);
584 READMEM(lockt->lt_owner.data, lockt->lt_owner.len); 611 READMEM(lockt->lt_owner.data, lockt->lt_owner.len);
585 612
613 if (argp->minorversion && !zero_clientid(&lockt->lt_clientid))
614 return nfserr_inval;
586 DECODE_TAIL; 615 DECODE_TAIL;
587} 616}
588 617
@@ -652,13 +681,26 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
652 switch (open->op_createmode) { 681 switch (open->op_createmode) {
653 case NFS4_CREATE_UNCHECKED: 682 case NFS4_CREATE_UNCHECKED:
654 case NFS4_CREATE_GUARDED: 683 case NFS4_CREATE_GUARDED:
655 if ((status = nfsd4_decode_fattr(argp, open->op_bmval, &open->op_iattr, &open->op_acl))) 684 status = nfsd4_decode_fattr(argp, open->op_bmval,
685 nfsd_attrmask, &open->op_iattr, &open->op_acl);
686 if (status)
656 goto out; 687 goto out;
657 break; 688 break;
658 case NFS4_CREATE_EXCLUSIVE: 689 case NFS4_CREATE_EXCLUSIVE:
659 READ_BUF(8); 690 READ_BUF(8);
660 COPYMEM(open->op_verf.data, 8); 691 COPYMEM(open->op_verf.data, 8);
661 break; 692 break;
693 case NFS4_CREATE_EXCLUSIVE4_1:
694 if (argp->minorversion < 1)
695 goto xdr_error;
696 READ_BUF(8);
697 COPYMEM(open->op_verf.data, 8);
698 status = nfsd4_decode_fattr(argp, open->op_bmval,
699 nfsd41_ex_attrmask, &open->op_iattr,
700 &open->op_acl);
701 if (status)
702 goto out;
703 break;
662 default: 704 default:
663 goto xdr_error; 705 goto xdr_error;
664 } 706 }
@@ -851,7 +893,7 @@ nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *seta
851 status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); 893 status = nfsd4_decode_stateid(argp, &setattr->sa_stateid);
852 if (status) 894 if (status)
853 return status; 895 return status;
854 return nfsd4_decode_fattr(argp, setattr->sa_bmval, 896 return nfsd4_decode_fattr(argp, setattr->sa_bmval, nfsd_attrmask,
855 &setattr->sa_iattr, &setattr->sa_acl); 897 &setattr->sa_iattr, &setattr->sa_acl);
856} 898}
857 899
@@ -993,6 +1035,241 @@ nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_rel
993 READ_BUF(rlockowner->rl_owner.len); 1035 READ_BUF(rlockowner->rl_owner.len);
994 READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); 1036 READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len);
995 1037
1038 if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid))
1039 return nfserr_inval;
1040 DECODE_TAIL;
1041}
1042
1043static __be32
1044nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp,
1045 struct nfsd4_exchange_id *exid)
1046{
1047 int dummy;
1048 DECODE_HEAD;
1049
1050 READ_BUF(NFS4_VERIFIER_SIZE);
1051 COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE);
1052
1053 READ_BUF(4);
1054 READ32(exid->clname.len);
1055
1056 READ_BUF(exid->clname.len);
1057 SAVEMEM(exid->clname.data, exid->clname.len);
1058
1059 READ_BUF(4);
1060 READ32(exid->flags);
1061
1062 /* Ignore state_protect4_a */
1063 READ_BUF(4);
1064 READ32(exid->spa_how);
1065 switch (exid->spa_how) {
1066 case SP4_NONE:
1067 break;
1068 case SP4_MACH_CRED:
1069 /* spo_must_enforce */
1070 READ_BUF(4);
1071 READ32(dummy);
1072 READ_BUF(dummy * 4);
1073 p += dummy;
1074
1075 /* spo_must_allow */
1076 READ_BUF(4);
1077 READ32(dummy);
1078 READ_BUF(dummy * 4);
1079 p += dummy;
1080 break;
1081 case SP4_SSV:
1082 /* ssp_ops */
1083 READ_BUF(4);
1084 READ32(dummy);
1085 READ_BUF(dummy * 4);
1086 p += dummy;
1087
1088 READ_BUF(4);
1089 READ32(dummy);
1090 READ_BUF(dummy * 4);
1091 p += dummy;
1092
1093 /* ssp_hash_algs<> */
1094 READ_BUF(4);
1095 READ32(dummy);
1096 READ_BUF(dummy);
1097 p += XDR_QUADLEN(dummy);
1098
1099 /* ssp_encr_algs<> */
1100 READ_BUF(4);
1101 READ32(dummy);
1102 READ_BUF(dummy);
1103 p += XDR_QUADLEN(dummy);
1104
1105 /* ssp_window and ssp_num_gss_handles */
1106 READ_BUF(8);
1107 READ32(dummy);
1108 READ32(dummy);
1109 break;
1110 default:
1111 goto xdr_error;
1112 }
1113
1114 /* Ignore Implementation ID */
1115 READ_BUF(4); /* nfs_impl_id4 array length */
1116 READ32(dummy);
1117
1118 if (dummy > 1)
1119 goto xdr_error;
1120
1121 if (dummy == 1) {
1122 /* nii_domain */
1123 READ_BUF(4);
1124 READ32(dummy);
1125 READ_BUF(dummy);
1126 p += XDR_QUADLEN(dummy);
1127
1128 /* nii_name */
1129 READ_BUF(4);
1130 READ32(dummy);
1131 READ_BUF(dummy);
1132 p += XDR_QUADLEN(dummy);
1133
1134 /* nii_date */
1135 READ_BUF(12);
1136 p += 3;
1137 }
1138 DECODE_TAIL;
1139}
1140
1141static __be32
1142nfsd4_decode_create_session(struct nfsd4_compoundargs *argp,
1143 struct nfsd4_create_session *sess)
1144{
1145 DECODE_HEAD;
1146
1147 u32 dummy;
1148 char *machine_name;
1149 int i;
1150 int nr_secflavs;
1151
1152 READ_BUF(16);
1153 COPYMEM(&sess->clientid, 8);
1154 READ32(sess->seqid);
1155 READ32(sess->flags);
1156
1157 /* Fore channel attrs */
1158 READ_BUF(28);
1159 READ32(dummy); /* headerpadsz is always 0 */
1160 READ32(sess->fore_channel.maxreq_sz);
1161 READ32(sess->fore_channel.maxresp_sz);
1162 READ32(sess->fore_channel.maxresp_cached);
1163 READ32(sess->fore_channel.maxops);
1164 READ32(sess->fore_channel.maxreqs);
1165 READ32(sess->fore_channel.nr_rdma_attrs);
1166 if (sess->fore_channel.nr_rdma_attrs == 1) {
1167 READ_BUF(4);
1168 READ32(sess->fore_channel.rdma_attrs);
1169 } else if (sess->fore_channel.nr_rdma_attrs > 1) {
1170 dprintk("Too many fore channel attr bitmaps!\n");
1171 goto xdr_error;
1172 }
1173
1174 /* Back channel attrs */
1175 READ_BUF(28);
1176 READ32(dummy); /* headerpadsz is always 0 */
1177 READ32(sess->back_channel.maxreq_sz);
1178 READ32(sess->back_channel.maxresp_sz);
1179 READ32(sess->back_channel.maxresp_cached);
1180 READ32(sess->back_channel.maxops);
1181 READ32(sess->back_channel.maxreqs);
1182 READ32(sess->back_channel.nr_rdma_attrs);
1183 if (sess->back_channel.nr_rdma_attrs == 1) {
1184 READ_BUF(4);
1185 READ32(sess->back_channel.rdma_attrs);
1186 } else if (sess->back_channel.nr_rdma_attrs > 1) {
1187 dprintk("Too many back channel attr bitmaps!\n");
1188 goto xdr_error;
1189 }
1190
1191 READ_BUF(8);
1192 READ32(sess->callback_prog);
1193
1194 /* callback_sec_params4 */
1195 READ32(nr_secflavs);
1196 for (i = 0; i < nr_secflavs; ++i) {
1197 READ_BUF(4);
1198 READ32(dummy);
1199 switch (dummy) {
1200 case RPC_AUTH_NULL:
1201 /* Nothing to read */
1202 break;
1203 case RPC_AUTH_UNIX:
1204 READ_BUF(8);
1205 /* stamp */
1206 READ32(dummy);
1207
1208 /* machine name */
1209 READ32(dummy);
1210 READ_BUF(dummy);
1211 SAVEMEM(machine_name, dummy);
1212
1213 /* uid, gid */
1214 READ_BUF(8);
1215 READ32(sess->uid);
1216 READ32(sess->gid);
1217
1218 /* more gids */
1219 READ_BUF(4);
1220 READ32(dummy);
1221 READ_BUF(dummy * 4);
1222 for (i = 0; i < dummy; ++i)
1223 READ32(dummy);
1224 break;
1225 case RPC_AUTH_GSS:
1226 dprintk("RPC_AUTH_GSS callback secflavor "
1227 "not supported!\n");
1228 READ_BUF(8);
1229 /* gcbp_service */
1230 READ32(dummy);
1231 /* gcbp_handle_from_server */
1232 READ32(dummy);
1233 READ_BUF(dummy);
1234 p += XDR_QUADLEN(dummy);
1235 /* gcbp_handle_from_client */
1236 READ_BUF(4);
1237 READ32(dummy);
1238 READ_BUF(dummy);
1239 p += XDR_QUADLEN(dummy);
1240 break;
1241 default:
1242 dprintk("Illegal callback secflavor\n");
1243 return nfserr_inval;
1244 }
1245 }
1246 DECODE_TAIL;
1247}
1248
1249static __be32
1250nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp,
1251 struct nfsd4_destroy_session *destroy_session)
1252{
1253 DECODE_HEAD;
1254 READ_BUF(NFS4_MAX_SESSIONID_LEN);
1255 COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1256
1257 DECODE_TAIL;
1258}
1259
1260static __be32
1261nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
1262 struct nfsd4_sequence *seq)
1263{
1264 DECODE_HEAD;
1265
1266 READ_BUF(NFS4_MAX_SESSIONID_LEN + 16);
1267 COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
1268 READ32(seq->seqid);
1269 READ32(seq->slotid);
1270 READ32(seq->maxslots);
1271 READ32(seq->cachethis);
1272
996 DECODE_TAIL; 1273 DECODE_TAIL;
997} 1274}
998 1275
@@ -1005,7 +1282,7 @@ nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p)
1005static __be32 1282static __be32
1006nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) 1283nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p)
1007{ 1284{
1008 return nfserr_opnotsupp; 1285 return nfserr_notsupp;
1009} 1286}
1010 1287
1011typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); 1288typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *);
@@ -1031,7 +1308,7 @@ static nfsd4_dec nfsd4_dec_ops[] = {
1031 [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, 1308 [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm,
1032 [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, 1309 [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade,
1033 [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, 1310 [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh,
1034 [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, 1311 [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop,
1035 [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, 1312 [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop,
1036 [OP_READ] = (nfsd4_dec)nfsd4_decode_read, 1313 [OP_READ] = (nfsd4_dec)nfsd4_decode_read,
1037 [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, 1314 [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir,
@@ -1050,6 +1327,67 @@ static nfsd4_dec nfsd4_dec_ops[] = {
1050 [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, 1327 [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner,
1051}; 1328};
1052 1329
1330static nfsd4_dec nfsd41_dec_ops[] = {
1331 [OP_ACCESS] (nfsd4_dec)nfsd4_decode_access,
1332 [OP_CLOSE] (nfsd4_dec)nfsd4_decode_close,
1333 [OP_COMMIT] (nfsd4_dec)nfsd4_decode_commit,
1334 [OP_CREATE] (nfsd4_dec)nfsd4_decode_create,
1335 [OP_DELEGPURGE] (nfsd4_dec)nfsd4_decode_notsupp,
1336 [OP_DELEGRETURN] (nfsd4_dec)nfsd4_decode_delegreturn,
1337 [OP_GETATTR] (nfsd4_dec)nfsd4_decode_getattr,
1338 [OP_GETFH] (nfsd4_dec)nfsd4_decode_noop,
1339 [OP_LINK] (nfsd4_dec)nfsd4_decode_link,
1340 [OP_LOCK] (nfsd4_dec)nfsd4_decode_lock,
1341 [OP_LOCKT] (nfsd4_dec)nfsd4_decode_lockt,
1342 [OP_LOCKU] (nfsd4_dec)nfsd4_decode_locku,
1343 [OP_LOOKUP] (nfsd4_dec)nfsd4_decode_lookup,
1344 [OP_LOOKUPP] (nfsd4_dec)nfsd4_decode_noop,
1345 [OP_NVERIFY] (nfsd4_dec)nfsd4_decode_verify,
1346 [OP_OPEN] (nfsd4_dec)nfsd4_decode_open,
1347 [OP_OPENATTR] (nfsd4_dec)nfsd4_decode_notsupp,
1348 [OP_OPEN_CONFIRM] (nfsd4_dec)nfsd4_decode_notsupp,
1349 [OP_OPEN_DOWNGRADE] (nfsd4_dec)nfsd4_decode_open_downgrade,
1350 [OP_PUTFH] (nfsd4_dec)nfsd4_decode_putfh,
1351 [OP_PUTPUBFH] (nfsd4_dec)nfsd4_decode_notsupp,
1352 [OP_PUTROOTFH] (nfsd4_dec)nfsd4_decode_noop,
1353 [OP_READ] (nfsd4_dec)nfsd4_decode_read,
1354 [OP_READDIR] (nfsd4_dec)nfsd4_decode_readdir,
1355 [OP_READLINK] (nfsd4_dec)nfsd4_decode_noop,
1356 [OP_REMOVE] (nfsd4_dec)nfsd4_decode_remove,
1357 [OP_RENAME] (nfsd4_dec)nfsd4_decode_rename,
1358 [OP_RENEW] (nfsd4_dec)nfsd4_decode_notsupp,
1359 [OP_RESTOREFH] (nfsd4_dec)nfsd4_decode_noop,
1360 [OP_SAVEFH] (nfsd4_dec)nfsd4_decode_noop,
1361 [OP_SECINFO] (nfsd4_dec)nfsd4_decode_secinfo,
1362 [OP_SETATTR] (nfsd4_dec)nfsd4_decode_setattr,
1363 [OP_SETCLIENTID] (nfsd4_dec)nfsd4_decode_notsupp,
1364 [OP_SETCLIENTID_CONFIRM](nfsd4_dec)nfsd4_decode_notsupp,
1365 [OP_VERIFY] (nfsd4_dec)nfsd4_decode_verify,
1366 [OP_WRITE] (nfsd4_dec)nfsd4_decode_write,
1367 [OP_RELEASE_LOCKOWNER] (nfsd4_dec)nfsd4_decode_notsupp,
1368
1369 /* new operations for NFSv4.1 */
1370 [OP_BACKCHANNEL_CTL] (nfsd4_dec)nfsd4_decode_notsupp,
1371 [OP_BIND_CONN_TO_SESSION](nfsd4_dec)nfsd4_decode_notsupp,
1372 [OP_EXCHANGE_ID] (nfsd4_dec)nfsd4_decode_exchange_id,
1373 [OP_CREATE_SESSION] (nfsd4_dec)nfsd4_decode_create_session,
1374 [OP_DESTROY_SESSION] (nfsd4_dec)nfsd4_decode_destroy_session,
1375 [OP_FREE_STATEID] (nfsd4_dec)nfsd4_decode_notsupp,
1376 [OP_GET_DIR_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp,
1377 [OP_GETDEVICEINFO] (nfsd4_dec)nfsd4_decode_notsupp,
1378 [OP_GETDEVICELIST] (nfsd4_dec)nfsd4_decode_notsupp,
1379 [OP_LAYOUTCOMMIT] (nfsd4_dec)nfsd4_decode_notsupp,
1380 [OP_LAYOUTGET] (nfsd4_dec)nfsd4_decode_notsupp,
1381 [OP_LAYOUTRETURN] (nfsd4_dec)nfsd4_decode_notsupp,
1382 [OP_SECINFO_NO_NAME] (nfsd4_dec)nfsd4_decode_notsupp,
1383 [OP_SEQUENCE] (nfsd4_dec)nfsd4_decode_sequence,
1384 [OP_SET_SSV] (nfsd4_dec)nfsd4_decode_notsupp,
1385 [OP_TEST_STATEID] (nfsd4_dec)nfsd4_decode_notsupp,
1386 [OP_WANT_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp,
1387 [OP_DESTROY_CLIENTID] (nfsd4_dec)nfsd4_decode_notsupp,
1388 [OP_RECLAIM_COMPLETE] (nfsd4_dec)nfsd4_decode_notsupp,
1389};
1390
1053struct nfsd4_minorversion_ops { 1391struct nfsd4_minorversion_ops {
1054 nfsd4_dec *decoders; 1392 nfsd4_dec *decoders;
1055 int nops; 1393 int nops;
@@ -1057,6 +1395,7 @@ struct nfsd4_minorversion_ops {
1057 1395
1058static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { 1396static struct nfsd4_minorversion_ops nfsd4_minorversion[] = {
1059 [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, 1397 [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) },
1398 [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) },
1060}; 1399};
1061 1400
1062static __be32 1401static __be32
@@ -1412,6 +1751,7 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
1412{ 1751{
1413 u32 bmval0 = bmval[0]; 1752 u32 bmval0 = bmval[0];
1414 u32 bmval1 = bmval[1]; 1753 u32 bmval1 = bmval[1];
1754 u32 bmval2 = bmval[2];
1415 struct kstat stat; 1755 struct kstat stat;
1416 struct svc_fh tempfh; 1756 struct svc_fh tempfh;
1417 struct kstatfs statfs; 1757 struct kstatfs statfs;
@@ -1425,12 +1765,16 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
1425 int err; 1765 int err;
1426 int aclsupport = 0; 1766 int aclsupport = 0;
1427 struct nfs4_acl *acl = NULL; 1767 struct nfs4_acl *acl = NULL;
1768 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1769 u32 minorversion = resp->cstate.minorversion;
1428 1770
1429 BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); 1771 BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1);
1430 BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0); 1772 BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion));
1431 BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1); 1773 BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion));
1774 BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion));
1432 1775
1433 if (exp->ex_fslocs.migrated) { 1776 if (exp->ex_fslocs.migrated) {
1777 BUG_ON(bmval[2]);
1434 status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); 1778 status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err);
1435 if (status) 1779 if (status)
1436 goto out; 1780 goto out;
@@ -1476,22 +1820,42 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
1476 if ((buflen -= 16) < 0) 1820 if ((buflen -= 16) < 0)
1477 goto out_resource; 1821 goto out_resource;
1478 1822
1479 WRITE32(2); 1823 if (unlikely(bmval2)) {
1480 WRITE32(bmval0); 1824 WRITE32(3);
1481 WRITE32(bmval1); 1825 WRITE32(bmval0);
1826 WRITE32(bmval1);
1827 WRITE32(bmval2);
1828 } else if (likely(bmval1)) {
1829 WRITE32(2);
1830 WRITE32(bmval0);
1831 WRITE32(bmval1);
1832 } else {
1833 WRITE32(1);
1834 WRITE32(bmval0);
1835 }
1482 attrlenp = p++; /* to be backfilled later */ 1836 attrlenp = p++; /* to be backfilled later */
1483 1837
1484 if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { 1838 if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) {
1485 u32 word0 = NFSD_SUPPORTED_ATTRS_WORD0; 1839 u32 word0 = nfsd_suppattrs0(minorversion);
1840 u32 word1 = nfsd_suppattrs1(minorversion);
1841 u32 word2 = nfsd_suppattrs2(minorversion);
1842
1486 if ((buflen -= 12) < 0) 1843 if ((buflen -= 12) < 0)
1487 goto out_resource; 1844 goto out_resource;
1488 if (!aclsupport) 1845 if (!aclsupport)
1489 word0 &= ~FATTR4_WORD0_ACL; 1846 word0 &= ~FATTR4_WORD0_ACL;
1490 if (!exp->ex_fslocs.locations) 1847 if (!exp->ex_fslocs.locations)
1491 word0 &= ~FATTR4_WORD0_FS_LOCATIONS; 1848 word0 &= ~FATTR4_WORD0_FS_LOCATIONS;
1492 WRITE32(2); 1849 if (!word2) {
1493 WRITE32(word0); 1850 WRITE32(2);
1494 WRITE32(NFSD_SUPPORTED_ATTRS_WORD1); 1851 WRITE32(word0);
1852 WRITE32(word1);
1853 } else {
1854 WRITE32(3);
1855 WRITE32(word0);
1856 WRITE32(word1);
1857 WRITE32(word2);
1858 }
1495 } 1859 }
1496 if (bmval0 & FATTR4_WORD0_TYPE) { 1860 if (bmval0 & FATTR4_WORD0_TYPE) {
1497 if ((buflen -= 4) < 0) 1861 if ((buflen -= 4) < 0)
@@ -1801,6 +2165,13 @@ out_acl:
1801 } 2165 }
1802 WRITE64(stat.ino); 2166 WRITE64(stat.ino);
1803 } 2167 }
2168 if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {
2169 WRITE32(3);
2170 WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0);
2171 WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1);
2172 WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2);
2173 }
2174
1804 *attrlenp = htonl((char *)p - (char *)attrlenp - 4); 2175 *attrlenp = htonl((char *)p - (char *)attrlenp - 4);
1805 *countp = p - buffer; 2176 *countp = p - buffer;
1806 status = nfs_ok; 2177 status = nfs_ok;
@@ -2572,6 +2943,143 @@ nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_w
2572} 2943}
2573 2944
2574static __be32 2945static __be32
2946nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr,
2947 struct nfsd4_exchange_id *exid)
2948{
2949 ENCODE_HEAD;
2950 char *major_id;
2951 char *server_scope;
2952 int major_id_sz;
2953 int server_scope_sz;
2954 uint64_t minor_id = 0;
2955
2956 if (nfserr)
2957 return nfserr;
2958
2959 major_id = utsname()->nodename;
2960 major_id_sz = strlen(major_id);
2961 server_scope = utsname()->nodename;
2962 server_scope_sz = strlen(server_scope);
2963
2964 RESERVE_SPACE(
2965 8 /* eir_clientid */ +
2966 4 /* eir_sequenceid */ +
2967 4 /* eir_flags */ +
2968 4 /* spr_how (SP4_NONE) */ +
2969 8 /* so_minor_id */ +
2970 4 /* so_major_id.len */ +
2971 (XDR_QUADLEN(major_id_sz) * 4) +
2972 4 /* eir_server_scope.len */ +
2973 (XDR_QUADLEN(server_scope_sz) * 4) +
2974 4 /* eir_server_impl_id.count (0) */);
2975
2976 WRITEMEM(&exid->clientid, 8);
2977 WRITE32(exid->seqid);
2978 WRITE32(exid->flags);
2979
2980 /* state_protect4_r. Currently only support SP4_NONE */
2981 BUG_ON(exid->spa_how != SP4_NONE);
2982 WRITE32(exid->spa_how);
2983
2984 /* The server_owner struct */
2985 WRITE64(minor_id); /* Minor id */
2986 /* major id */
2987 WRITE32(major_id_sz);
2988 WRITEMEM(major_id, major_id_sz);
2989
2990 /* Server scope */
2991 WRITE32(server_scope_sz);
2992 WRITEMEM(server_scope, server_scope_sz);
2993
2994 /* Implementation id */
2995 WRITE32(0); /* zero length nfs_impl_id4 array */
2996 ADJUST_ARGS();
2997 return 0;
2998}
2999
3000static __be32
3001nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr,
3002 struct nfsd4_create_session *sess)
3003{
3004 ENCODE_HEAD;
3005
3006 if (nfserr)
3007 return nfserr;
3008
3009 RESERVE_SPACE(24);
3010 WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN);
3011 WRITE32(sess->seqid);
3012 WRITE32(sess->flags);
3013 ADJUST_ARGS();
3014
3015 RESERVE_SPACE(28);
3016 WRITE32(0); /* headerpadsz */
3017 WRITE32(sess->fore_channel.maxreq_sz);
3018 WRITE32(sess->fore_channel.maxresp_sz);
3019 WRITE32(sess->fore_channel.maxresp_cached);
3020 WRITE32(sess->fore_channel.maxops);
3021 WRITE32(sess->fore_channel.maxreqs);
3022 WRITE32(sess->fore_channel.nr_rdma_attrs);
3023 ADJUST_ARGS();
3024
3025 if (sess->fore_channel.nr_rdma_attrs) {
3026 RESERVE_SPACE(4);
3027 WRITE32(sess->fore_channel.rdma_attrs);
3028 ADJUST_ARGS();
3029 }
3030
3031 RESERVE_SPACE(28);
3032 WRITE32(0); /* headerpadsz */
3033 WRITE32(sess->back_channel.maxreq_sz);
3034 WRITE32(sess->back_channel.maxresp_sz);
3035 WRITE32(sess->back_channel.maxresp_cached);
3036 WRITE32(sess->back_channel.maxops);
3037 WRITE32(sess->back_channel.maxreqs);
3038 WRITE32(sess->back_channel.nr_rdma_attrs);
3039 ADJUST_ARGS();
3040
3041 if (sess->back_channel.nr_rdma_attrs) {
3042 RESERVE_SPACE(4);
3043 WRITE32(sess->back_channel.rdma_attrs);
3044 ADJUST_ARGS();
3045 }
3046 return 0;
3047}
3048
3049static __be32
3050nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr,
3051 struct nfsd4_destroy_session *destroy_session)
3052{
3053 return nfserr;
3054}
3055
3056__be32
3057nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
3058 struct nfsd4_sequence *seq)
3059{
3060 ENCODE_HEAD;
3061
3062 if (nfserr)
3063 return nfserr;
3064
3065 RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20);
3066 WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
3067 WRITE32(seq->seqid);
3068 WRITE32(seq->slotid);
3069 WRITE32(seq->maxslots);
3070 /*
3071 * FIXME: for now:
3072 * target_maxslots = maxslots
3073 * status_flags = 0
3074 */
3075 WRITE32(seq->maxslots);
3076 WRITE32(0);
3077
3078 ADJUST_ARGS();
3079 return 0;
3080}
3081
3082static __be32
2575nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) 3083nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p)
2576{ 3084{
2577 return nfserr; 3085 return nfserr;
@@ -2579,6 +3087,11 @@ nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p)
2579 3087
2580typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); 3088typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *);
2581 3089
3090/*
3091 * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1
3092 * since we don't need to filter out obsolete ops as this is
3093 * done in the decoding phase.
3094 */
2582static nfsd4_enc nfsd4_enc_ops[] = { 3095static nfsd4_enc nfsd4_enc_ops[] = {
2583 [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, 3096 [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access,
2584 [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, 3097 [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close,
@@ -2617,8 +3130,77 @@ static nfsd4_enc nfsd4_enc_ops[] = {
2617 [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, 3130 [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop,
2618 [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, 3131 [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write,
2619 [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, 3132 [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop,
3133
3134 /* NFSv4.1 operations */
3135 [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop,
3136 [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_noop,
3137 [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id,
3138 [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session,
3139 [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session,
3140 [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
3141 [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
3142 [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop,
3143 [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop,
3144 [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop,
3145 [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop,
3146 [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop,
3147 [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_noop,
3148 [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence,
3149 [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop,
3150 [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
3151 [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
3152 [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop,
3153 [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop,
2620}; 3154};
2621 3155
3156/*
3157 * Calculate the total amount of memory that the compound response has taken
3158 * after encoding the current operation.
3159 *
3160 * pad: add on 8 bytes for the next operation's op_code and status so that
3161 * there is room to cache a failure on the next operation.
3162 *
3163 * Compare this length to the session se_fmaxresp_cached.
3164 *
3165 * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so
3166 * will be at least a page and will therefore hold the xdr_buf head.
3167 */
3168static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp)
3169{
3170 int status = 0;
3171 struct xdr_buf *xb = &resp->rqstp->rq_res;
3172 struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
3173 struct nfsd4_session *session = NULL;
3174 struct nfsd4_slot *slot = resp->cstate.slot;
3175 u32 length, tlen = 0, pad = 8;
3176
3177 if (!nfsd4_has_session(&resp->cstate))
3178 return status;
3179
3180 session = resp->cstate.session;
3181 if (session == NULL || slot->sl_cache_entry.ce_cachethis == 0)
3182 return status;
3183
3184 if (resp->opcnt >= args->opcnt)
3185 pad = 0; /* this is the last operation */
3186
3187 if (xb->page_len == 0) {
3188 length = (char *)resp->p - (char *)xb->head[0].iov_base + pad;
3189 } else {
3190 if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0)
3191 tlen = (char *)resp->p - (char *)xb->tail[0].iov_base;
3192
3193 length = xb->head[0].iov_len + xb->page_len + tlen + pad;
3194 }
3195 dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__,
3196 length, xb->page_len, tlen, pad);
3197
3198 if (length <= session->se_fmaxresp_cached)
3199 return status;
3200 else
3201 return nfserr_rep_too_big_to_cache;
3202}
3203
2622void 3204void
2623nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) 3205nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
2624{ 3206{
@@ -2635,6 +3217,9 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
2635 BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || 3217 BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) ||
2636 !nfsd4_enc_ops[op->opnum]); 3218 !nfsd4_enc_ops[op->opnum]);
2637 op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); 3219 op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u);
3220 /* nfsd4_check_drc_limit guarantees enough room for error status */
3221 if (!op->status && nfsd4_check_drc_limit(resp))
3222 op->status = nfserr_rep_too_big_to_cache;
2638status: 3223status:
2639 /* 3224 /*
2640 * Note: We write the status directly, instead of using WRITE32(), 3225 * Note: We write the status directly, instead of using WRITE32(),
@@ -2735,6 +3320,18 @@ nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compo
2735 iov = &rqstp->rq_res.head[0]; 3320 iov = &rqstp->rq_res.head[0];
2736 iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; 3321 iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base;
2737 BUG_ON(iov->iov_len > PAGE_SIZE); 3322 BUG_ON(iov->iov_len > PAGE_SIZE);
3323 if (nfsd4_has_session(&resp->cstate)) {
3324 if (resp->cstate.status == nfserr_replay_cache &&
3325 !nfsd4_not_cached(resp)) {
3326 iov->iov_len = resp->cstate.iovlen;
3327 } else {
3328 nfsd4_store_cache_entry(resp);
3329 dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__);
3330 resp->cstate.slot->sl_inuse = 0;
3331 }
3332 if (resp->cstate.session)
3333 nfsd4_put_session(resp->cstate.session);
3334 }
2738 return 1; 3335 return 1;
2739} 3336}
2740 3337
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index a4ed8644d69c..af16849d243a 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -60,6 +60,7 @@ enum {
60 NFSD_FO_UnlockFS, 60 NFSD_FO_UnlockFS,
61 NFSD_Threads, 61 NFSD_Threads,
62 NFSD_Pool_Threads, 62 NFSD_Pool_Threads,
63 NFSD_Pool_Stats,
63 NFSD_Versions, 64 NFSD_Versions,
64 NFSD_Ports, 65 NFSD_Ports,
65 NFSD_MaxBlkSize, 66 NFSD_MaxBlkSize,
@@ -172,6 +173,16 @@ static const struct file_operations exports_operations = {
172 .owner = THIS_MODULE, 173 .owner = THIS_MODULE,
173}; 174};
174 175
176extern int nfsd_pool_stats_open(struct inode *inode, struct file *file);
177
178static struct file_operations pool_stats_operations = {
179 .open = nfsd_pool_stats_open,
180 .read = seq_read,
181 .llseek = seq_lseek,
182 .release = seq_release,
183 .owner = THIS_MODULE,
184};
185
175/*----------------------------------------------------------------------------*/ 186/*----------------------------------------------------------------------------*/
176/* 187/*
177 * payload - write methods 188 * payload - write methods
@@ -781,8 +792,9 @@ out_free:
781static ssize_t __write_versions(struct file *file, char *buf, size_t size) 792static ssize_t __write_versions(struct file *file, char *buf, size_t size)
782{ 793{
783 char *mesg = buf; 794 char *mesg = buf;
784 char *vers, sign; 795 char *vers, *minorp, sign;
785 int len, num; 796 int len, num;
797 unsigned minor;
786 ssize_t tlen = 0; 798 ssize_t tlen = 0;
787 char *sep; 799 char *sep;
788 800
@@ -803,9 +815,20 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
803 do { 815 do {
804 sign = *vers; 816 sign = *vers;
805 if (sign == '+' || sign == '-') 817 if (sign == '+' || sign == '-')
806 num = simple_strtol((vers+1), NULL, 0); 818 num = simple_strtol((vers+1), &minorp, 0);
807 else 819 else
808 num = simple_strtol(vers, NULL, 0); 820 num = simple_strtol(vers, &minorp, 0);
821 if (*minorp == '.') {
822 if (num < 4)
823 return -EINVAL;
824 minor = simple_strtoul(minorp+1, NULL, 0);
825 if (minor == 0)
826 return -EINVAL;
827 if (nfsd_minorversion(minor, sign == '-' ?
828 NFSD_CLEAR : NFSD_SET) < 0)
829 return -EINVAL;
830 goto next;
831 }
809 switch(num) { 832 switch(num) {
810 case 2: 833 case 2:
811 case 3: 834 case 3:
@@ -815,6 +838,7 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
815 default: 838 default:
816 return -EINVAL; 839 return -EINVAL;
817 } 840 }
841 next:
818 vers += len + 1; 842 vers += len + 1;
819 tlen += len; 843 tlen += len;
820 } while ((len = qword_get(&mesg, vers, size)) > 0); 844 } while ((len = qword_get(&mesg, vers, size)) > 0);
@@ -833,6 +857,13 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
833 num); 857 num);
834 sep = " "; 858 sep = " ";
835 } 859 }
860 if (nfsd_vers(4, NFSD_AVAIL))
861 for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; minor++)
862 len += sprintf(buf+len, " %c4.%u",
863 (nfsd_vers(4, NFSD_TEST) &&
864 nfsd_minorversion(minor, NFSD_TEST)) ?
865 '+' : '-',
866 minor);
836 len += sprintf(buf+len, "\n"); 867 len += sprintf(buf+len, "\n");
837 return len; 868 return len;
838} 869}
@@ -1248,6 +1279,7 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
1248 [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, 1279 [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
1249 [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, 1280 [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
1250 [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, 1281 [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR},
1282 [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO},
1251 [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, 1283 [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
1252 [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, 1284 [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
1253 [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, 1285 [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index 6f7f26351227..e298e260b5f1 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -180,6 +180,7 @@ nfsd_proc_write(struct svc_rqst *rqstp, struct nfsd_writeargs *argp,
180{ 180{
181 __be32 nfserr; 181 __be32 nfserr;
182 int stable = 1; 182 int stable = 1;
183 unsigned long cnt = argp->len;
183 184
184 dprintk("nfsd: WRITE %s %d bytes at %d\n", 185 dprintk("nfsd: WRITE %s %d bytes at %d\n",
185 SVCFH_fmt(&argp->fh), 186 SVCFH_fmt(&argp->fh),
@@ -188,7 +189,7 @@ nfsd_proc_write(struct svc_rqst *rqstp, struct nfsd_writeargs *argp,
188 nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), NULL, 189 nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), NULL,
189 argp->offset, 190 argp->offset,
190 rqstp->rq_vec, argp->vlen, 191 rqstp->rq_vec, argp->vlen,
191 argp->len, 192 &cnt,
192 &stable); 193 &stable);
193 return nfsd_return_attrs(nfserr, resp); 194 return nfsd_return_attrs(nfserr, resp);
194} 195}
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 7c09852be713..cbba4a935786 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -22,6 +22,7 @@
22#include <linux/freezer.h> 22#include <linux/freezer.h>
23#include <linux/fs_struct.h> 23#include <linux/fs_struct.h>
24#include <linux/kthread.h> 24#include <linux/kthread.h>
25#include <linux/swap.h>
25 26
26#include <linux/sunrpc/types.h> 27#include <linux/sunrpc/types.h>
27#include <linux/sunrpc/stats.h> 28#include <linux/sunrpc/stats.h>
@@ -40,9 +41,6 @@
40extern struct svc_program nfsd_program; 41extern struct svc_program nfsd_program;
41static int nfsd(void *vrqstp); 42static int nfsd(void *vrqstp);
42struct timeval nfssvc_boot; 43struct timeval nfssvc_boot;
43static atomic_t nfsd_busy;
44static unsigned long nfsd_last_call;
45static DEFINE_SPINLOCK(nfsd_call_lock);
46 44
47/* 45/*
48 * nfsd_mutex protects nfsd_serv -- both the pointer itself and the members 46 * nfsd_mutex protects nfsd_serv -- both the pointer itself and the members
@@ -123,6 +121,8 @@ struct svc_program nfsd_program = {
123 121
124}; 122};
125 123
124u32 nfsd_supported_minorversion;
125
126int nfsd_vers(int vers, enum vers_op change) 126int nfsd_vers(int vers, enum vers_op change)
127{ 127{
128 if (vers < NFSD_MINVERS || vers >= NFSD_NRVERS) 128 if (vers < NFSD_MINVERS || vers >= NFSD_NRVERS)
@@ -149,6 +149,28 @@ int nfsd_vers(int vers, enum vers_op change)
149 } 149 }
150 return 0; 150 return 0;
151} 151}
152
153int nfsd_minorversion(u32 minorversion, enum vers_op change)
154{
155 if (minorversion > NFSD_SUPPORTED_MINOR_VERSION)
156 return -1;
157 switch(change) {
158 case NFSD_SET:
159 nfsd_supported_minorversion = minorversion;
160 break;
161 case NFSD_CLEAR:
162 if (minorversion == 0)
163 return -1;
164 nfsd_supported_minorversion = minorversion - 1;
165 break;
166 case NFSD_TEST:
167 return minorversion <= nfsd_supported_minorversion;
168 case NFSD_AVAIL:
169 return minorversion <= NFSD_SUPPORTED_MINOR_VERSION;
170 }
171 return 0;
172}
173
152/* 174/*
153 * Maximum number of nfsd processes 175 * Maximum number of nfsd processes
154 */ 176 */
@@ -200,6 +222,28 @@ void nfsd_reset_versions(void)
200 } 222 }
201} 223}
202 224
225/*
226 * Each session guarantees a negotiated per slot memory cache for replies
227 * which in turn consumes memory beyond the v2/v3/v4.0 server. A dedicated
228 * NFSv4.1 server might want to use more memory for a DRC than a machine
229 * with mutiple services.
230 *
231 * Impose a hard limit on the number of pages for the DRC which varies
232 * according to the machines free pages. This is of course only a default.
233 *
234 * For now this is a #defined shift which could be under admin control
235 * in the future.
236 */
237static void set_max_drc(void)
238{
239 /* The percent of nr_free_buffer_pages used by the V4.1 server DRC */
240 #define NFSD_DRC_SIZE_SHIFT 7
241 nfsd_serv->sv_drc_max_pages = nr_free_buffer_pages()
242 >> NFSD_DRC_SIZE_SHIFT;
243 nfsd_serv->sv_drc_pages_used = 0;
244 dprintk("%s svc_drc_max_pages %u\n", __func__,
245 nfsd_serv->sv_drc_max_pages);
246}
203 247
204int nfsd_create_serv(void) 248int nfsd_create_serv(void)
205{ 249{
@@ -227,11 +271,12 @@ int nfsd_create_serv(void)
227 nfsd_max_blksize /= 2; 271 nfsd_max_blksize /= 2;
228 } 272 }
229 273
230 atomic_set(&nfsd_busy, 0);
231 nfsd_serv = svc_create_pooled(&nfsd_program, nfsd_max_blksize, 274 nfsd_serv = svc_create_pooled(&nfsd_program, nfsd_max_blksize,
232 nfsd_last_thread, nfsd, THIS_MODULE); 275 nfsd_last_thread, nfsd, THIS_MODULE);
233 if (nfsd_serv == NULL) 276 if (nfsd_serv == NULL)
234 err = -ENOMEM; 277 err = -ENOMEM;
278 else
279 set_max_drc();
235 280
236 do_gettimeofday(&nfssvc_boot); /* record boot time */ 281 do_gettimeofday(&nfssvc_boot); /* record boot time */
237 return err; 282 return err;
@@ -375,26 +420,6 @@ nfsd_svc(unsigned short port, int nrservs)
375 return error; 420 return error;
376} 421}
377 422
378static inline void
379update_thread_usage(int busy_threads)
380{
381 unsigned long prev_call;
382 unsigned long diff;
383 int decile;
384
385 spin_lock(&nfsd_call_lock);
386 prev_call = nfsd_last_call;
387 nfsd_last_call = jiffies;
388 decile = busy_threads*10/nfsdstats.th_cnt;
389 if (decile>0 && decile <= 10) {
390 diff = nfsd_last_call - prev_call;
391 if ( (nfsdstats.th_usage[decile-1] += diff) >= NFSD_USAGE_WRAP)
392 nfsdstats.th_usage[decile-1] -= NFSD_USAGE_WRAP;
393 if (decile == 10)
394 nfsdstats.th_fullcnt++;
395 }
396 spin_unlock(&nfsd_call_lock);
397}
398 423
399/* 424/*
400 * This is the NFS server kernel thread 425 * This is the NFS server kernel thread
@@ -460,8 +485,6 @@ nfsd(void *vrqstp)
460 continue; 485 continue;
461 } 486 }
462 487
463 update_thread_usage(atomic_read(&nfsd_busy));
464 atomic_inc(&nfsd_busy);
465 488
466 /* Lock the export hash tables for reading. */ 489 /* Lock the export hash tables for reading. */
467 exp_readlock(); 490 exp_readlock();
@@ -470,8 +493,6 @@ nfsd(void *vrqstp)
470 493
471 /* Unlock export hash tables */ 494 /* Unlock export hash tables */
472 exp_readunlock(); 495 exp_readunlock();
473 update_thread_usage(atomic_read(&nfsd_busy));
474 atomic_dec(&nfsd_busy);
475 } 496 }
476 497
477 /* Clear signals before calling svc_exit_thread() */ 498 /* Clear signals before calling svc_exit_thread() */
@@ -539,6 +560,10 @@ nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
539 + rqstp->rq_res.head[0].iov_len; 560 + rqstp->rq_res.head[0].iov_len;
540 rqstp->rq_res.head[0].iov_len += sizeof(__be32); 561 rqstp->rq_res.head[0].iov_len += sizeof(__be32);
541 562
563 /* NFSv4.1 DRC requires statp */
564 if (rqstp->rq_vers == 4)
565 nfsd4_set_statp(rqstp, statp);
566
542 /* Now call the procedure handler, and encode NFS status. */ 567 /* Now call the procedure handler, and encode NFS status. */
543 nfserr = proc->pc_func(rqstp, rqstp->rq_argp, rqstp->rq_resp); 568 nfserr = proc->pc_func(rqstp, rqstp->rq_argp, rqstp->rq_resp);
544 nfserr = map_new_errors(rqstp->rq_vers, nfserr); 569 nfserr = map_new_errors(rqstp->rq_vers, nfserr);
@@ -570,3 +595,10 @@ nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
570 nfsd_cache_update(rqstp, proc->pc_cachetype, statp + 1); 595 nfsd_cache_update(rqstp, proc->pc_cachetype, statp + 1);
571 return 1; 596 return 1;
572} 597}
598
599int nfsd_pool_stats_open(struct inode *inode, struct file *file)
600{
601 if (nfsd_serv == NULL)
602 return -ENODEV;
603 return svc_pool_stats_open(nfsd_serv, file);
604}
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 78376b6c0236..ab93fcfef254 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -366,8 +366,9 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
366 } 366 }
367 367
368 /* Revoke setuid/setgid on chown */ 368 /* Revoke setuid/setgid on chown */
369 if (((iap->ia_valid & ATTR_UID) && iap->ia_uid != inode->i_uid) || 369 if (!S_ISDIR(inode->i_mode) &&
370 ((iap->ia_valid & ATTR_GID) && iap->ia_gid != inode->i_gid)) { 370 (((iap->ia_valid & ATTR_UID) && iap->ia_uid != inode->i_uid) ||
371 ((iap->ia_valid & ATTR_GID) && iap->ia_gid != inode->i_gid))) {
371 iap->ia_valid |= ATTR_KILL_PRIV; 372 iap->ia_valid |= ATTR_KILL_PRIV;
372 if (iap->ia_valid & ATTR_MODE) { 373 if (iap->ia_valid & ATTR_MODE) {
373 /* we're setting mode too, just clear the s*id bits */ 374 /* we're setting mode too, just clear the s*id bits */
@@ -960,7 +961,7 @@ static void kill_suid(struct dentry *dentry)
960static __be32 961static __be32
961nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, 962nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
962 loff_t offset, struct kvec *vec, int vlen, 963 loff_t offset, struct kvec *vec, int vlen,
963 unsigned long cnt, int *stablep) 964 unsigned long *cnt, int *stablep)
964{ 965{
965 struct svc_export *exp; 966 struct svc_export *exp;
966 struct dentry *dentry; 967 struct dentry *dentry;
@@ -974,7 +975,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
974 err = nfserr_perm; 975 err = nfserr_perm;
975 976
976 if ((fhp->fh_export->ex_flags & NFSEXP_MSNFS) && 977 if ((fhp->fh_export->ex_flags & NFSEXP_MSNFS) &&
977 (!lock_may_write(file->f_path.dentry->d_inode, offset, cnt))) 978 (!lock_may_write(file->f_path.dentry->d_inode, offset, *cnt)))
978 goto out; 979 goto out;
979#endif 980#endif
980 981
@@ -1009,7 +1010,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
1009 host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &offset); 1010 host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &offset);
1010 set_fs(oldfs); 1011 set_fs(oldfs);
1011 if (host_err >= 0) { 1012 if (host_err >= 0) {
1012 nfsdstats.io_write += cnt; 1013 nfsdstats.io_write += host_err;
1013 fsnotify_modify(file->f_path.dentry); 1014 fsnotify_modify(file->f_path.dentry);
1014 } 1015 }
1015 1016
@@ -1054,9 +1055,10 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
1054 } 1055 }
1055 1056
1056 dprintk("nfsd: write complete host_err=%d\n", host_err); 1057 dprintk("nfsd: write complete host_err=%d\n", host_err);
1057 if (host_err >= 0) 1058 if (host_err >= 0) {
1058 err = 0; 1059 err = 0;
1059 else 1060 *cnt = host_err;
1061 } else
1060 err = nfserrno(host_err); 1062 err = nfserrno(host_err);
1061out: 1063out:
1062 return err; 1064 return err;
@@ -1098,7 +1100,7 @@ out:
1098 */ 1100 */
1099__be32 1101__be32
1100nfsd_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, 1102nfsd_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
1101 loff_t offset, struct kvec *vec, int vlen, unsigned long cnt, 1103 loff_t offset, struct kvec *vec, int vlen, unsigned long *cnt,
1102 int *stablep) 1104 int *stablep)
1103{ 1105{
1104 __be32 err = 0; 1106 __be32 err = 0;
@@ -1179,6 +1181,21 @@ nfsd_create_setattr(struct svc_rqst *rqstp, struct svc_fh *resfhp,
1179 return 0; 1181 return 0;
1180} 1182}
1181 1183
1184/* HPUX client sometimes creates a file in mode 000, and sets size to 0.
1185 * setting size to 0 may fail for some specific file systems by the permission
1186 * checking which requires WRITE permission but the mode is 000.
1187 * we ignore the resizing(to 0) on the just new created file, since the size is
1188 * 0 after file created.
1189 *
1190 * call this only after vfs_create() is called.
1191 * */
1192static void
1193nfsd_check_ignore_resizing(struct iattr *iap)
1194{
1195 if ((iap->ia_valid & ATTR_SIZE) && (iap->ia_size == 0))
1196 iap->ia_valid &= ~ATTR_SIZE;
1197}
1198
1182/* 1199/*
1183 * Create a file (regular, directory, device, fifo); UNIX sockets 1200 * Create a file (regular, directory, device, fifo); UNIX sockets
1184 * not yet implemented. 1201 * not yet implemented.
@@ -1274,6 +1291,8 @@ nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
1274 switch (type) { 1291 switch (type) {
1275 case S_IFREG: 1292 case S_IFREG:
1276 host_err = vfs_create(dirp, dchild, iap->ia_mode, NULL); 1293 host_err = vfs_create(dirp, dchild, iap->ia_mode, NULL);
1294 if (!host_err)
1295 nfsd_check_ignore_resizing(iap);
1277 break; 1296 break;
1278 case S_IFDIR: 1297 case S_IFDIR:
1279 host_err = vfs_mkdir(dirp, dchild, iap->ia_mode); 1298 host_err = vfs_mkdir(dirp, dchild, iap->ia_mode);
@@ -1427,6 +1446,8 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
1427 /* setattr will sync the child (or not) */ 1446 /* setattr will sync the child (or not) */
1428 } 1447 }
1429 1448
1449 nfsd_check_ignore_resizing(iap);
1450
1430 if (createmode == NFS3_CREATE_EXCLUSIVE) { 1451 if (createmode == NFS3_CREATE_EXCLUSIVE) {
1431 /* Cram the verifier into atime/mtime */ 1452 /* Cram the verifier into atime/mtime */
1432 iap->ia_valid = ATTR_MTIME|ATTR_ATIME 1453 iap->ia_valid = ATTR_MTIME|ATTR_ATIME
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-24 14:29:56 -0500