aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--Documentation/filesystems/9p.txt8
-rw-r--r--fs/9p/v9fs.c149
-rw-r--r--fs/9p/v9fs.h15
-rw-r--r--fs/9p/vfs_super.c19
-rw-r--r--include/net/9p/client.h4
-rw-r--r--include/net/9p/conn.h4
-rw-r--r--include/net/9p/transport.h25
-rw-r--r--net/9p/Kconfig10
-rw-r--r--net/9p/Makefile5
-rw-r--r--net/9p/client.c2
-rw-r--r--net/9p/mux.c4
-rw-r--r--net/9p/trans_fd.c419
12 files changed, 379 insertions, 285 deletions
diff --git a/Documentation/filesystems/9p.txt b/Documentation/filesystems/9p.txt
index cda6905cbe49..1a5f50d35544 100644
--- a/Documentation/filesystems/9p.txt
+++ b/Documentation/filesystems/9p.txt
@@ -35,12 +35,12 @@ For remote file server:
35 35
36For Plan 9 From User Space applications (http://swtch.com/plan9) 36For Plan 9 From User Space applications (http://swtch.com/plan9)
37 37
38 mount -t 9p `namespace`/acme /mnt/9 -o proto=unix,uname=$USER 38 mount -t 9p `namespace`/acme /mnt/9 -o trans=unix,uname=$USER
39 39
40OPTIONS 40OPTIONS
41======= 41=======
42 42
43 proto=name select an alternative transport. Valid options are 43 trans=name select an alternative transport. Valid options are
44 currently: 44 currently:
45 unix - specifying a named pipe mount point 45 unix - specifying a named pipe mount point
46 tcp - specifying a normal TCP/IP connection 46 tcp - specifying a normal TCP/IP connection
@@ -68,9 +68,9 @@ OPTIONS
68 0x40 = display transport debug 68 0x40 = display transport debug
69 0x80 = display allocation debug 69 0x80 = display allocation debug
70 70
71 rfdno=n the file descriptor for reading with proto=fd 71 rfdno=n the file descriptor for reading with trans=fd
72 72
73 wfdno=n the file descriptor for writing with proto=fd 73 wfdno=n the file descriptor for writing with trans=fd
74 74
75 maxdata=n the number of bytes to use for 9p packet payload (msize) 75 maxdata=n the number of bytes to use for 9p packet payload (msize)
76 76
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 0a7068e30ecb..08d880fb5b6a 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -37,18 +37,58 @@
37#include "v9fs_vfs.h" 37#include "v9fs_vfs.h"
38 38
39/* 39/*
40 * Dynamic Transport Registration Routines
41 *
42 */
43
44static LIST_HEAD(v9fs_trans_list);
45static struct p9_trans_module *v9fs_default_trans;
46
47/**
48 * v9fs_register_trans - register a new transport with 9p
49 * @m - structure describing the transport module and entry points
50 *
51 */
52void v9fs_register_trans(struct p9_trans_module *m)
53{
54 list_add_tail(&m->list, &v9fs_trans_list);
55 if (m->def)
56 v9fs_default_trans = m;
57}
58EXPORT_SYMBOL(v9fs_register_trans);
59
60/**
61 * v9fs_match_trans - match transport versus registered transports
62 * @arg: string identifying transport
63 *
64 */
65static struct p9_trans_module *v9fs_match_trans(const substring_t *name)
66{
67 struct list_head *p;
68 struct p9_trans_module *t = NULL;
69
70 list_for_each(p, &v9fs_trans_list) {
71 t = list_entry(p, struct p9_trans_module, list);
72 if (strncmp(t->name, name->from, name->to-name->from) == 0) {
73 P9_DPRINTK(P9_DEBUG_TRANS, "trans=%s\n", t->name);
74 break;
75 }
76 }
77 return t;
78}
79
80/*
40 * Option Parsing (code inspired by NFS code) 81 * Option Parsing (code inspired by NFS code)
41 * 82 * NOTE: each transport will parse its own options
42 */ 83 */
43 84
44enum { 85enum {
45 /* Options that take integer arguments */ 86 /* Options that take integer arguments */
46 Opt_debug, Opt_port, Opt_msize, Opt_uid, Opt_gid, Opt_afid, 87 Opt_debug, Opt_msize, Opt_uid, Opt_gid, Opt_afid,
47 Opt_rfdno, Opt_wfdno,
48 /* String options */ 88 /* String options */
49 Opt_uname, Opt_remotename, 89 Opt_uname, Opt_remotename, Opt_trans,
50 /* Options that take no arguments */ 90 /* Options that take no arguments */
51 Opt_legacy, Opt_nodevmap, Opt_unix, Opt_tcp, Opt_fd, Opt_pci, 91 Opt_legacy, Opt_nodevmap,
52 /* Cache options */ 92 /* Cache options */
53 Opt_cache_loose, 93 Opt_cache_loose,
54 /* Error token */ 94 /* Error token */
@@ -57,24 +97,13 @@ enum {
57 97
58static match_table_t tokens = { 98static match_table_t tokens = {
59 {Opt_debug, "debug=%x"}, 99 {Opt_debug, "debug=%x"},
60 {Opt_port, "port=%u"},
61 {Opt_msize, "msize=%u"}, 100 {Opt_msize, "msize=%u"},
62 {Opt_uid, "uid=%u"}, 101 {Opt_uid, "uid=%u"},
63 {Opt_gid, "gid=%u"}, 102 {Opt_gid, "gid=%u"},
64 {Opt_afid, "afid=%u"}, 103 {Opt_afid, "afid=%u"},
65 {Opt_rfdno, "rfdno=%u"},
66 {Opt_wfdno, "wfdno=%u"},
67 {Opt_uname, "uname=%s"}, 104 {Opt_uname, "uname=%s"},
68 {Opt_remotename, "aname=%s"}, 105 {Opt_remotename, "aname=%s"},
69 {Opt_unix, "proto=unix"}, 106 {Opt_trans, "trans=%s"},
70 {Opt_tcp, "proto=tcp"},
71 {Opt_fd, "proto=fd"},
72#ifdef CONFIG_PCI_9P
73 {Opt_pci, "proto=pci"},
74#endif
75 {Opt_tcp, "tcp"},
76 {Opt_unix, "unix"},
77 {Opt_fd, "fd"},
78 {Opt_legacy, "noextend"}, 107 {Opt_legacy, "noextend"},
79 {Opt_nodevmap, "nodevmap"}, 108 {Opt_nodevmap, "nodevmap"},
80 {Opt_cache_loose, "cache=loose"}, 109 {Opt_cache_loose, "cache=loose"},
@@ -82,12 +111,6 @@ static match_table_t tokens = {
82 {Opt_err, NULL} 111 {Opt_err, NULL}
83}; 112};
84 113
85extern struct p9_transport *p9pci_trans_create(void);
86
87/*
88 * Parse option string.
89 */
90
91/** 114/**
92 * v9fs_parse_options - parse mount options into session structure 115 * v9fs_parse_options - parse mount options into session structure
93 * @options: options string passed from mount 116 * @options: options string passed from mount
@@ -95,23 +118,21 @@ extern struct p9_transport *p9pci_trans_create(void);
95 * 118 *
96 */ 119 */
97 120
98static void v9fs_parse_options(char *options, struct v9fs_session_info *v9ses) 121static void v9fs_parse_options(struct v9fs_session_info *v9ses)
99{ 122{
100 char *p; 123 char *options = v9ses->options;
101 substring_t args[MAX_OPT_ARGS]; 124 substring_t args[MAX_OPT_ARGS];
125 char *p;
102 int option; 126 int option;
103 int ret; 127 int ret;
104 128
105 /* setup defaults */ 129 /* setup defaults */
106 v9ses->port = V9FS_PORT; 130 v9ses->maxdata = 8192;
107 v9ses->maxdata = 9000;
108 v9ses->proto = PROTO_TCP;
109 v9ses->extended = 1; 131 v9ses->extended = 1;
110 v9ses->afid = ~0; 132 v9ses->afid = ~0;
111 v9ses->debug = 0; 133 v9ses->debug = 0;
112 v9ses->rfdno = ~0;
113 v9ses->wfdno = ~0;
114 v9ses->cache = 0; 134 v9ses->cache = 0;
135 v9ses->trans = v9fs_default_trans;
115 136
116 if (!options) 137 if (!options)
117 return; 138 return;
@@ -135,9 +156,6 @@ static void v9fs_parse_options(char *options, struct v9fs_session_info *v9ses)
135 p9_debug_level = option; 156 p9_debug_level = option;
136#endif 157#endif
137 break; 158 break;
138 case Opt_port:
139 v9ses->port = option;
140 break;
141 case Opt_msize: 159 case Opt_msize:
142 v9ses->maxdata = option; 160 v9ses->maxdata = option;
143 break; 161 break;
@@ -150,23 +168,8 @@ static void v9fs_parse_options(char *options, struct v9fs_session_info *v9ses)
150 case Opt_afid: 168 case Opt_afid:
151 v9ses->afid = option; 169 v9ses->afid = option;
152 break; 170 break;
153 case Opt_rfdno: 171 case Opt_trans:
154 v9ses->rfdno = option; 172 v9ses->trans = v9fs_match_trans(&args[0]);
155 break;
156 case Opt_wfdno:
157 v9ses->wfdno = option;
158 break;
159 case Opt_tcp:
160 v9ses->proto = PROTO_TCP;
161 break;
162 case Opt_unix:
163 v9ses->proto = PROTO_UNIX;
164 break;
165 case Opt_pci:
166 v9ses->proto = PROTO_PCI;
167 break;
168 case Opt_fd:
169 v9ses->proto = PROTO_FD;
170 break; 173 break;
171 case Opt_uname: 174 case Opt_uname:
172 match_strcpy(v9ses->name, &args[0]); 175 match_strcpy(v9ses->name, &args[0]);
@@ -201,7 +204,7 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
201 const char *dev_name, char *data) 204 const char *dev_name, char *data)
202{ 205{
203 int retval = -EINVAL; 206 int retval = -EINVAL;
204 struct p9_transport *trans; 207 struct p9_trans *trans = NULL;
205 struct p9_fid *fid; 208 struct p9_fid *fid;
206 209
207 v9ses->name = __getname(); 210 v9ses->name = __getname();
@@ -217,39 +220,30 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
217 strcpy(v9ses->name, V9FS_DEFUSER); 220 strcpy(v9ses->name, V9FS_DEFUSER);
218 strcpy(v9ses->remotename, V9FS_DEFANAME); 221 strcpy(v9ses->remotename, V9FS_DEFANAME);
219 222
220 v9fs_parse_options(data, v9ses); 223 v9ses->options = kstrdup(data, GFP_KERNEL);
221 224 v9fs_parse_options(v9ses);
222 switch (v9ses->proto) { 225
223 case PROTO_TCP: 226 if ((v9ses->trans == NULL) && !list_empty(&v9fs_trans_list))
224 trans = p9_trans_create_tcp(dev_name, v9ses->port); 227 v9ses->trans = list_first_entry(&v9fs_trans_list,
225 break; 228 struct p9_trans_module, list);
226 case PROTO_UNIX: 229
227 trans = p9_trans_create_unix(dev_name); 230 if (v9ses->trans == NULL) {
228 *v9ses->remotename = 0; 231 retval = -EPROTONOSUPPORT;
229 break; 232 P9_DPRINTK(P9_DEBUG_ERROR,
230 case PROTO_FD: 233 "No transport defined or default transport\n");
231 trans = p9_trans_create_fd(v9ses->rfdno, v9ses->wfdno);
232 *v9ses->remotename = 0;
233 break;
234#ifdef CONFIG_PCI_9P
235 case PROTO_PCI:
236 trans = p9pci_trans_create();
237 *v9ses->remotename = 0;
238 break;
239#endif
240 default:
241 printk(KERN_ERR "v9fs: Bad mount protocol %d\n", v9ses->proto);
242 retval = -ENOPROTOOPT;
243 goto error; 234 goto error;
244 }; 235 }
245 236
237 trans = v9ses->trans->create(dev_name, v9ses->options);
246 if (IS_ERR(trans)) { 238 if (IS_ERR(trans)) {
247 retval = PTR_ERR(trans); 239 retval = PTR_ERR(trans);
248 trans = NULL; 240 trans = NULL;
249 goto error; 241 goto error;
250 } 242 }
243 if ((v9ses->maxdata+P9_IOHDRSZ) > v9ses->trans->maxsize)
244 v9ses->maxdata = v9ses->trans->maxsize-P9_IOHDRSZ;
251 245
252 v9ses->clnt = p9_client_create(trans, v9ses->maxdata + P9_IOHDRSZ, 246 v9ses->clnt = p9_client_create(trans, v9ses->maxdata+P9_IOHDRSZ,
253 v9ses->extended); 247 v9ses->extended);
254 248
255 if (IS_ERR(v9ses->clnt)) { 249 if (IS_ERR(v9ses->clnt)) {
@@ -290,6 +284,7 @@ void v9fs_session_close(struct v9fs_session_info *v9ses)
290 284
291 __putname(v9ses->name); 285 __putname(v9ses->name);
292 __putname(v9ses->remotename); 286 __putname(v9ses->remotename);
287 kfree(v9ses->options);
293} 288}
294 289
295/** 290/**
@@ -311,7 +306,7 @@ extern int v9fs_error_init(void);
311static int __init init_v9fs(void) 306static int __init init_v9fs(void)
312{ 307{
313 printk(KERN_INFO "Installing v9fs 9p2000 file system support\n"); 308 printk(KERN_INFO "Installing v9fs 9p2000 file system support\n");
314 309 /* TODO: Setup list of registered trasnport modules */
315 return register_filesystem(&v9fs_fs_type); 310 return register_filesystem(&v9fs_fs_type);
316} 311}
317 312
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index abc4b1668ace..7eb135cf60ca 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -31,31 +31,20 @@ struct v9fs_session_info {
31 unsigned int maxdata; 31 unsigned int maxdata;
32 unsigned char extended; /* set to 1 if we are using UNIX extensions */ 32 unsigned char extended; /* set to 1 if we are using UNIX extensions */
33 unsigned char nodev; /* set to 1 if no disable device mapping */ 33 unsigned char nodev; /* set to 1 if no disable device mapping */
34 unsigned short port; /* port to connect to */
35 unsigned short debug; /* debug level */ 34 unsigned short debug; /* debug level */
36 unsigned short proto; /* protocol to use */
37 unsigned int afid; /* authentication fid */ 35 unsigned int afid; /* authentication fid */
38 unsigned int rfdno; /* read file descriptor number */
39 unsigned int wfdno; /* write file descriptor number */
40 unsigned int cache; /* cache mode */ 36 unsigned int cache; /* cache mode */
41 37
38 char *options; /* copy of mount options */
42 char *name; /* user name to mount as */ 39 char *name; /* user name to mount as */
43 char *remotename; /* name of remote hierarchy being mounted */ 40 char *remotename; /* name of remote hierarchy being mounted */
44 unsigned int uid; /* default uid/muid for legacy support */ 41 unsigned int uid; /* default uid/muid for legacy support */
45 unsigned int gid; /* default gid for legacy support */ 42 unsigned int gid; /* default gid for legacy support */
46 43 struct p9_trans_module *trans; /* 9p transport */
47 struct p9_client *clnt; /* 9p client */ 44 struct p9_client *clnt; /* 9p client */
48 struct dentry *debugfs_dir; 45 struct dentry *debugfs_dir;
49}; 46};
50 47
51/* possible values of ->proto */
52enum {
53 PROTO_TCP,
54 PROTO_UNIX,
55 PROTO_FD,
56 PROTO_PCI,
57};
58
59/* possible values of ->cache */ 48/* possible values of ->cache */
60/* eventually support loose, tight, time, session, default always none */ 49/* eventually support loose, tight, time, session, default always none */
61enum { 50enum {
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index ba904371218b..bb0cef9a6b8a 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -216,24 +216,7 @@ static int v9fs_show_options(struct seq_file *m, struct vfsmount *mnt)
216{ 216{
217 struct v9fs_session_info *v9ses = mnt->mnt_sb->s_fs_info; 217 struct v9fs_session_info *v9ses = mnt->mnt_sb->s_fs_info;
218 218
219 if (v9ses->debug != 0) 219 seq_printf(m, "%s", v9ses->options);
220 seq_printf(m, ",debug=%x", v9ses->debug);
221 if (v9ses->port != V9FS_PORT)
222 seq_printf(m, ",port=%u", v9ses->port);
223 if (v9ses->maxdata != 9000)
224 seq_printf(m, ",msize=%u", v9ses->maxdata);
225 if (v9ses->afid != ~0)
226 seq_printf(m, ",afid=%u", v9ses->afid);
227 if (v9ses->proto == PROTO_UNIX)
228 seq_puts(m, ",proto=unix");
229 if (v9ses->extended == 0)
230 seq_puts(m, ",noextend");
231 if (v9ses->nodev == 1)
232 seq_puts(m, ",nodevmap");
233 seq_printf(m, ",name=%s", v9ses->name);
234 seq_printf(m, ",aname=%s", v9ses->remotename);
235 seq_printf(m, ",uid=%u", v9ses->uid);
236 seq_printf(m, ",gid=%u", v9ses->gid);
237 return 0; 220 return 0;
238} 221}
239 222
diff --git a/include/net/9p/client.h b/include/net/9p/client.h
index d65ed7c69063..0adafdb273f0 100644
--- a/include/net/9p/client.h
+++ b/include/net/9p/client.h
@@ -29,7 +29,7 @@ struct p9_client {
29 spinlock_t lock; /* protect client structure */ 29 spinlock_t lock; /* protect client structure */
30 int msize; 30 int msize;
31 unsigned char dotu; 31 unsigned char dotu;
32 struct p9_transport *trans; 32 struct p9_trans *trans;
33 struct p9_conn *conn; 33 struct p9_conn *conn;
34 34
35 struct p9_idpool *fidpool; 35 struct p9_idpool *fidpool;
@@ -52,7 +52,7 @@ struct p9_fid {
52 struct list_head dlist; /* list of all fids attached to a dentry */ 52 struct list_head dlist; /* list of all fids attached to a dentry */
53}; 53};
54 54
55struct p9_client *p9_client_create(struct p9_transport *trans, int msize, 55struct p9_client *p9_client_create(struct p9_trans *trans, int msize,
56 int dotu); 56 int dotu);
57void p9_client_destroy(struct p9_client *clnt); 57void p9_client_destroy(struct p9_client *clnt);
58void p9_client_disconnect(struct p9_client *clnt); 58void p9_client_disconnect(struct p9_client *clnt);
diff --git a/include/net/9p/conn.h b/include/net/9p/conn.h
index 583b6a2cb3df..756d8784f953 100644
--- a/include/net/9p/conn.h
+++ b/include/net/9p/conn.h
@@ -42,8 +42,8 @@ struct p9_req;
42 */ 42 */
43typedef void (*p9_conn_req_callback)(struct p9_req *req, void *a); 43typedef void (*p9_conn_req_callback)(struct p9_req *req, void *a);
44 44
45struct p9_conn *p9_conn_create(struct p9_transport *trans, int msize, 45struct p9_conn *p9_conn_create(struct p9_trans *trans, int msize,
46 unsigned char *dotu); 46 unsigned char *dotu);
47void p9_conn_destroy(struct p9_conn *); 47void p9_conn_destroy(struct p9_conn *);
48int p9_conn_rpc(struct p9_conn *m, struct p9_fcall *tc, struct p9_fcall **rc); 48int p9_conn_rpc(struct p9_conn *m, struct p9_fcall *tc, struct p9_fcall **rc);
49 49
diff --git a/include/net/9p/transport.h b/include/net/9p/transport.h
index 462d42279fb0..7c68b3e8e78c 100644
--- a/include/net/9p/transport.h
+++ b/include/net/9p/transport.h
@@ -26,24 +26,29 @@
26#ifndef NET_9P_TRANSPORT_H 26#ifndef NET_9P_TRANSPORT_H
27#define NET_9P_TRANSPORT_H 27#define NET_9P_TRANSPORT_H
28 28
29enum p9_transport_status { 29enum p9_trans_status {
30 Connected, 30 Connected,
31 Disconnected, 31 Disconnected,
32 Hung, 32 Hung,
33}; 33};
34 34
35struct p9_transport { 35struct p9_trans {
36 enum p9_transport_status status; 36 enum p9_trans_status status;
37 void *priv; 37 void *priv;
38 int (*write) (struct p9_trans *, void *, int);
39 int (*read) (struct p9_trans *, void *, int);
40 void (*close) (struct p9_trans *);
41 unsigned int (*poll)(struct p9_trans *, struct poll_table_struct *);
42};
38 43
39 int (*write) (struct p9_transport *, void *, int); 44struct p9_trans_module {
40 int (*read) (struct p9_transport *, void *, int); 45 struct list_head list;
41 void (*close) (struct p9_transport *); 46 char *name; /* name of transport */
42 unsigned int (*poll)(struct p9_transport *, struct poll_table_struct *); 47 int maxsize; /* max message size of transport */
48 int def; /* this transport should be default */
49 struct p9_trans * (*create)(const char *devname, char *options);
43}; 50};
44 51
45struct p9_transport *p9_trans_create_tcp(const char *addr, int port); 52void v9fs_register_trans(struct p9_trans_module *m);
46struct p9_transport *p9_trans_create_unix(const char *addr);
47struct p9_transport *p9_trans_create_fd(int rfd, int wfd);
48 53
49#endif /* NET_9P_TRANSPORT_H */ 54#endif /* NET_9P_TRANSPORT_H */
diff --git a/net/9p/Kconfig b/net/9p/Kconfig
index 66821cd64a76..eecbf12f6393 100644
--- a/net/9p/Kconfig
+++ b/net/9p/Kconfig
@@ -13,6 +13,16 @@ menuconfig NET_9P
13 13
14 If unsure, say N. 14 If unsure, say N.
15 15
16config NET_9P_FD
17 depends on NET_9P
18 default y if NET_9P
19 tristate "9P File Descriptor Transports (Experimental)"
20 help
21 This builds support for file descriptor transports for 9p
22 which includes support for TCP/IP, named pipes, or passed
23 file descriptors. TCP/IP is the default transport for 9p,
24 so if you are going to use 9p, you'll likely want this.
25
16config NET_9P_DEBUG 26config NET_9P_DEBUG
17 bool "Debug information" 27 bool "Debug information"
18 depends on NET_9P 28 depends on NET_9P
diff --git a/net/9p/Makefile b/net/9p/Makefile
index 85b3a7838acf..7b2a67abc0a0 100644
--- a/net/9p/Makefile
+++ b/net/9p/Makefile
@@ -1,8 +1,8 @@
1obj-$(CONFIG_NET_9P) := 9pnet.o 1obj-$(CONFIG_NET_9P) := 9pnet.o
2obj-$(CONFIG_NET_9P_FD) += 9pnet_fd.o
2 3
39pnet-objs := \ 49pnet-objs := \
4 mod.o \ 5 mod.o \
5 trans_fd.o \
6 mux.o \ 6 mux.o \
7 client.o \ 7 client.o \
8 conv.o \ 8 conv.o \
@@ -11,3 +11,6 @@ obj-$(CONFIG_NET_9P) := 9pnet.o
11 util.o \ 11 util.o \
12 12
139pnet-$(CONFIG_SYSCTL) += sysctl.o 139pnet-$(CONFIG_SYSCTL) += sysctl.o
14
159pnet_fd-objs := \
16 trans_fd.o \
diff --git a/net/9p/client.c b/net/9p/client.c
index cb170750337c..e1610125a882 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -38,7 +38,7 @@ static struct p9_fid *p9_fid_create(struct p9_client *clnt);
38static void p9_fid_destroy(struct p9_fid *fid); 38static void p9_fid_destroy(struct p9_fid *fid);
39static struct p9_stat *p9_clone_stat(struct p9_stat *st, int dotu); 39static struct p9_stat *p9_clone_stat(struct p9_stat *st, int dotu);
40 40
41struct p9_client *p9_client_create(struct p9_transport *trans, int msize, 41struct p9_client *p9_client_create(struct p9_trans *trans, int msize,
42 int dotu) 42 int dotu)
43{ 43{
44 int err, n; 44 int err, n;
diff --git a/net/9p/mux.c b/net/9p/mux.c
index 5d70558c4c61..934e2ea86e2c 100644
--- a/net/9p/mux.c
+++ b/net/9p/mux.c
@@ -71,7 +71,7 @@ struct p9_conn {
71 struct p9_mux_poll_task *poll_task; 71 struct p9_mux_poll_task *poll_task;
72 int msize; 72 int msize;
73 unsigned char *extended; 73 unsigned char *extended;
74 struct p9_transport *trans; 74 struct p9_trans *trans;
75 struct p9_idpool *tagpool; 75 struct p9_idpool *tagpool;
76 int err; 76 int err;
77 wait_queue_head_t equeue; 77 wait_queue_head_t equeue;
@@ -271,7 +271,7 @@ static void p9_mux_poll_stop(struct p9_conn *m)
271 * @msize - maximum message size 271 * @msize - maximum message size
272 * @extended - pointer to the extended flag 272 * @extended - pointer to the extended flag
273 */ 273 */
274struct p9_conn *p9_conn_create(struct p9_transport *trans, int msize, 274struct p9_conn *p9_conn_create(struct p9_trans *trans, int msize,
275 unsigned char *extended) 275 unsigned char *extended)
276{ 276{
277 int i, n; 277 int i, n;
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
index fd636e94358f..30269a4ff22a 100644
--- a/net/9p/trans_fd.c
+++ b/net/9p/trans_fd.c
@@ -5,7 +5,7 @@
5 * 5 *
6 * Copyright (C) 2006 by Russ Cox <rsc@swtch.com> 6 * Copyright (C) 2006 by Russ Cox <rsc@swtch.com>
7 * Copyright (C) 2004-2005 by Latchesar Ionkov <lucho@ionkov.net> 7 * Copyright (C) 2004-2005 by Latchesar Ionkov <lucho@ionkov.net>
8 * Copyright (C) 2004-2005 by Eric Van Hensbergen <ericvh@gmail.com> 8 * Copyright (C) 2004-2007 by Eric Van Hensbergen <ericvh@gmail.com>
9 * Copyright (C) 1997-2002 by Ron Minnich <rminnich@sarnoff.com> 9 * Copyright (C) 1997-2002 by Ron Minnich <rminnich@sarnoff.com>
10 * 10 *
11 * This program is free software; you can redistribute it and/or modify 11 * This program is free software; you can redistribute it and/or modify
@@ -36,160 +36,114 @@
36#include <linux/inet.h> 36#include <linux/inet.h>
37#include <linux/idr.h> 37#include <linux/idr.h>
38#include <linux/file.h> 38#include <linux/file.h>
39#include <linux/parser.h>
39#include <net/9p/9p.h> 40#include <net/9p/9p.h>
40#include <net/9p/transport.h> 41#include <net/9p/transport.h>
41 42
42#define P9_PORT 564 43#define P9_PORT 564
44#define MAX_SOCK_BUF (64*1024)
45
46
47struct p9_fd_opts {
48 int rfd;
49 int wfd;
50 u16 port;
51};
43 52
44struct p9_trans_fd { 53struct p9_trans_fd {
45 struct file *rd; 54 struct file *rd;
46 struct file *wr; 55 struct file *wr;
47}; 56};
48 57
49static int p9_socket_open(struct p9_transport *trans, struct socket *csocket); 58/*
50static int p9_fd_open(struct p9_transport *trans, int rfd, int wfd); 59 * Option Parsing (code inspired by NFS code)
51static int p9_fd_read(struct p9_transport *trans, void *v, int len); 60 * - a little lazy - parse all fd-transport options
52static int p9_fd_write(struct p9_transport *trans, void *v, int len); 61 */
53static unsigned int p9_fd_poll(struct p9_transport *trans,
54 struct poll_table_struct *pt);
55static void p9_fd_close(struct p9_transport *trans);
56
57struct p9_transport *p9_trans_create_tcp(const char *addr, int port)
58{
59 int err;
60 struct p9_transport *trans;
61 struct socket *csocket;
62 struct sockaddr_in sin_server;
63
64 csocket = NULL;
65 trans = kmalloc(sizeof(struct p9_transport), GFP_KERNEL);
66 if (!trans)
67 return ERR_PTR(-ENOMEM);
68
69 trans->write = p9_fd_write;
70 trans->read = p9_fd_read;
71 trans->close = p9_fd_close;
72 trans->poll = p9_fd_poll;
73
74 sin_server.sin_family = AF_INET;
75 sin_server.sin_addr.s_addr = in_aton(addr);
76 sin_server.sin_port = htons(port);
77 sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, &csocket);
78
79 if (!csocket) {
80 P9_EPRINTK(KERN_ERR, "p9_trans_tcp: problem creating socket\n");
81 err = -EIO;
82 goto error;
83 }
84
85 err = csocket->ops->connect(csocket,
86 (struct sockaddr *)&sin_server,
87 sizeof(struct sockaddr_in), 0);
88 if (err < 0) {
89 P9_EPRINTK(KERN_ERR,
90 "p9_trans_tcp: problem connecting socket to %s\n",
91 addr);
92 goto error;
93 }
94
95 err = p9_socket_open(trans, csocket);
96 if (err < 0)
97 goto error;
98 62
99 return trans; 63enum {
64 /* Options that take integer arguments */
65 Opt_port, Opt_rfdno, Opt_wfdno,
66};
100 67
101error: 68static match_table_t tokens = {
102 if (csocket) 69 {Opt_port, "port=%u"},
103 sock_release(csocket); 70 {Opt_rfdno, "rfdno=%u"},
71 {Opt_wfdno, "wfdno=%u"},
72};
104 73
105 kfree(trans); 74/**
106 return ERR_PTR(err); 75 * v9fs_parse_options - parse mount options into session structure
107} 76 * @options: options string passed from mount
108EXPORT_SYMBOL(p9_trans_create_tcp); 77 * @v9ses: existing v9fs session information
78 *
79 */
109 80
110struct p9_transport *p9_trans_create_unix(const char *addr) 81static void parse_opts(char *options, struct p9_fd_opts *opts)
111{ 82{
112 int err; 83 char *p;
113 struct socket *csocket; 84 substring_t args[MAX_OPT_ARGS];
114 struct sockaddr_un sun_server; 85 int option;
115 struct p9_transport *trans; 86 int ret;
116
117 csocket = NULL;
118 trans = kmalloc(sizeof(struct p9_transport), GFP_KERNEL);
119 if (!trans)
120 return ERR_PTR(-ENOMEM);
121 87
122 trans->write = p9_fd_write; 88 opts->port = P9_PORT;
123 trans->read = p9_fd_read; 89 opts->rfd = ~0;
124 trans->close = p9_fd_close; 90 opts->wfd = ~0;
125 trans->poll = p9_fd_poll;
126 91
127 if (strlen(addr) > UNIX_PATH_MAX) { 92 if (!options)
128 P9_EPRINTK(KERN_ERR, "p9_trans_unix: address too long: %s\n", 93 return;
129 addr);
130 err = -ENAMETOOLONG;
131 goto error;
132 }
133 94
134 sun_server.sun_family = PF_UNIX; 95 while ((p = strsep(&options, ",")) != NULL) {
135 strcpy(sun_server.sun_path, addr); 96 int token;
136 sock_create_kern(PF_UNIX, SOCK_STREAM, 0, &csocket); 97 if (!*p)
137 err = csocket->ops->connect(csocket, (struct sockaddr *)&sun_server, 98 continue;
138 sizeof(struct sockaddr_un) - 1, 0); 99 token = match_token(p, tokens, args);
139 if (err < 0) { 100 ret = match_int(&args[0], &option);
140 P9_EPRINTK(KERN_ERR, 101 if (ret < 0) {
141 "p9_trans_unix: problem connecting socket: %s: %d\n", 102 P9_DPRINTK(P9_DEBUG_ERROR,
142 addr, err); 103 "integer field, but no integer?\n");
143 goto error; 104 continue;
105 }
106 switch (token) {
107 case Opt_port:
108 opts->port = option;
109 break;
110 case Opt_rfdno:
111 opts->rfd = option;
112 break;
113 case Opt_wfdno:
114 opts->wfd = option;
115 break;
116 default:
117 continue;
118 }
144 } 119 }
145
146 err = p9_socket_open(trans, csocket);
147 if (err < 0)
148 goto error;
149
150 return trans;
151
152error:
153 if (csocket)
154 sock_release(csocket);
155
156 kfree(trans);
157 return ERR_PTR(err);
158} 120}
159EXPORT_SYMBOL(p9_trans_create_unix);
160 121
161struct p9_transport *p9_trans_create_fd(int rfd, int wfd) 122static int p9_fd_open(struct p9_trans *trans, int rfd, int wfd)
162{ 123{
163 int err; 124 struct p9_trans_fd *ts = kmalloc(sizeof(struct p9_trans_fd),
164 struct p9_transport *trans; 125 GFP_KERNEL);
126 if (!ts)
127 return -ENOMEM;
165 128
166 if (rfd == ~0 || wfd == ~0) { 129 ts->rd = fget(rfd);
167 printk(KERN_ERR "v9fs: Insufficient options for proto=fd\n"); 130 ts->wr = fget(wfd);
168 return ERR_PTR(-ENOPROTOOPT); 131 if (!ts->rd || !ts->wr) {
132 if (ts->rd)
133 fput(ts->rd);
134 if (ts->wr)
135 fput(ts->wr);
136 kfree(ts);
137 return -EIO;
169 } 138 }
170 139
171 trans = kmalloc(sizeof(struct p9_transport), GFP_KERNEL); 140 trans->priv = ts;
172 if (!trans) 141 trans->status = Connected;
173 return ERR_PTR(-ENOMEM);
174
175 trans->write = p9_fd_write;
176 trans->read = p9_fd_read;
177 trans->close = p9_fd_close;
178 trans->poll = p9_fd_poll;
179
180 err = p9_fd_open(trans, rfd, wfd);
181 if (err < 0)
182 goto error;
183
184 return trans;
185 142
186error: 143 return 0;
187 kfree(trans);
188 return ERR_PTR(err);
189} 144}
190EXPORT_SYMBOL(p9_trans_create_fd);
191 145
192static int p9_socket_open(struct p9_transport *trans, struct socket *csocket) 146static int p9_socket_open(struct p9_trans *trans, struct socket *csocket)
193{ 147{
194 int fd, ret; 148 int fd, ret;
195 149
@@ -212,30 +166,6 @@ static int p9_socket_open(struct p9_transport *trans, struct socket *csocket)
212 return 0; 166 return 0;
213} 167}
214 168
215static int p9_fd_open(struct p9_transport *trans, int rfd, int wfd)
216{
217 struct p9_trans_fd *ts = kmalloc(sizeof(struct p9_trans_fd),
218 GFP_KERNEL);
219 if (!ts)
220 return -ENOMEM;
221
222 ts->rd = fget(rfd);
223 ts->wr = fget(wfd);
224 if (!ts->rd || !ts->wr) {
225 if (ts->rd)
226 fput(ts->rd);
227 if (ts->wr)
228 fput(ts->wr);
229 kfree(ts);
230 return -EIO;
231 }
232
233 trans->priv = ts;
234 trans->status = Connected;
235
236 return 0;
237}
238
239/** 169/**
240 * p9_fd_read- read from a fd 170 * p9_fd_read- read from a fd
241 * @v9ses: session information 171 * @v9ses: session information
@@ -243,7 +173,7 @@ static int p9_fd_open(struct p9_transport *trans, int rfd, int wfd)
243 * @len: size of receive buffer 173 * @len: size of receive buffer
244 * 174 *
245 */ 175 */
246static int p9_fd_read(struct p9_transport *trans, void *v, int len) 176static int p9_fd_read(struct p9_trans *trans, void *v, int len)
247{ 177{
248 int ret; 178 int ret;
249 struct p9_trans_fd *ts = NULL; 179 struct p9_trans_fd *ts = NULL;
@@ -270,7 +200,7 @@ static int p9_fd_read(struct p9_transport *trans, void *v, int len)
270 * @len: size of send buffer 200 * @len: size of send buffer
271 * 201 *
272 */ 202 */
273static int p9_fd_write(struct p9_transport *trans, void *v, int len) 203static int p9_fd_write(struct p9_trans *trans, void *v, int len)
274{ 204{
275 int ret; 205 int ret;
276 mm_segment_t oldfs; 206 mm_segment_t oldfs;
@@ -297,7 +227,7 @@ static int p9_fd_write(struct p9_transport *trans, void *v, int len)
297} 227}
298 228
299static unsigned int 229static unsigned int
300p9_fd_poll(struct p9_transport *trans, struct poll_table_struct *pt) 230p9_fd_poll(struct p9_trans *trans, struct poll_table_struct *pt)
301{ 231{
302 int ret, n; 232 int ret, n;
303 struct p9_trans_fd *ts = NULL; 233 struct p9_trans_fd *ts = NULL;
@@ -341,7 +271,7 @@ end:
341 * @trans: private socket structure 271 * @trans: private socket structure
342 * 272 *
343 */ 273 */
344static void p9_fd_close(struct p9_transport *trans) 274static void p9_fd_close(struct p9_trans *trans)
345{ 275{
346 struct p9_trans_fd *ts; 276 struct p9_trans_fd *ts;
347 277
@@ -361,3 +291,182 @@ static void p9_fd_close(struct p9_transport *trans)
361 kfree(ts); 291 kfree(ts);
362} 292}
363 293
294static struct p9_trans *p9_trans_create_tcp(const char *addr, char *args)
295{
296 int err;
297 struct p9_trans *trans;
298 struct socket *csocket;
299 struct sockaddr_in sin_server;
300 struct p9_fd_opts opts;
301
302 parse_opts(args, &opts);
303
304 csocket = NULL;
305 trans = kmalloc(sizeof(struct p9_trans), GFP_KERNEL);
306 if (!trans)
307 return ERR_PTR(-ENOMEM);
308
309 trans->write = p9_fd_write;
310 trans->read = p9_fd_read;
311 trans->close = p9_fd_close;
312 trans->poll = p9_fd_poll;
313
314 sin_server.sin_family = AF_INET;
315 sin_server.sin_addr.s_addr = in_aton(addr);
316 sin_server.sin_port = htons(opts.port);
317 sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, &csocket);
318
319 if (!csocket) {
320 P9_EPRINTK(KERN_ERR, "p9_trans_tcp: problem creating socket\n");
321 err = -EIO;
322 goto error;
323 }
324
325 err = csocket->ops->connect(csocket,
326 (struct sockaddr *)&sin_server,
327 sizeof(struct sockaddr_in), 0);
328 if (err < 0) {
329 P9_EPRINTK(KERN_ERR,
330 "p9_trans_tcp: problem connecting socket to %s\n",
331 addr);
332 goto error;
333 }
334
335 err = p9_socket_open(trans, csocket);
336 if (err < 0)
337 goto error;
338
339 return trans;
340
341error:
342 if (csocket)
343 sock_release(csocket);
344
345 kfree(trans);
346 return ERR_PTR(err);
347}
348
349static struct p9_trans *p9_trans_create_unix(const char *addr, char *args)
350{
351 int err;
352 struct socket *csocket;
353 struct sockaddr_un sun_server;
354 struct p9_trans *trans;
355
356 csocket = NULL;
357 trans = kmalloc(sizeof(struct p9_trans), GFP_KERNEL);
358 if (!trans)
359 return ERR_PTR(-ENOMEM);
360
361 trans->write = p9_fd_write;
362 trans->read = p9_fd_read;
363 trans->close = p9_fd_close;
364 trans->poll = p9_fd_poll;
365
366 if (strlen(addr) > UNIX_PATH_MAX) {
367 P9_EPRINTK(KERN_ERR, "p9_trans_unix: address too long: %s\n",
368 addr);
369 err = -ENAMETOOLONG;
370 goto error;
371 }
372
373 sun_server.sun_family = PF_UNIX;
374 strcpy(sun_server.sun_path, addr);
375 sock_create_kern(PF_UNIX, SOCK_STREAM, 0, &csocket);
376 err = csocket->ops->connect(csocket, (struct sockaddr *)&sun_server,
377 sizeof(struct sockaddr_un) - 1, 0);
378 if (err < 0) {
379 P9_EPRINTK(KERN_ERR,
380 "p9_trans_unix: problem connecting socket: %s: %d\n",
381 addr, err);
382 goto error;
383 }
384
385 err = p9_socket_open(trans, csocket);
386 if (err < 0)
387 goto error;
388
389 return trans;
390
391error:
392 if (csocket)
393 sock_release(csocket);
394
395 kfree(trans);
396 return ERR_PTR(err);
397}
398
399static struct p9_trans *p9_trans_create_fd(const char *name, char *args)
400{
401 int err;
402 struct p9_trans *trans;
403 struct p9_fd_opts opts;
404
405 parse_opts(args, &opts);
406
407 if (opts.rfd == ~0 || opts.wfd == ~0) {
408 printk(KERN_ERR "v9fs: Insufficient options for proto=fd\n");
409 return ERR_PTR(-ENOPROTOOPT);
410 }
411
412 trans = kmalloc(sizeof(struct p9_trans), GFP_KERNEL);
413 if (!trans)
414 return ERR_PTR(-ENOMEM);
415
416 trans->write = p9_fd_write;
417 trans->read = p9_fd_read;
418 trans->close = p9_fd_close;
419 trans->poll = p9_fd_poll;
420
421 err = p9_fd_open(trans, opts.rfd, opts.wfd);
422 if (err < 0)
423 goto error;
424
425 return trans;
426
427error:
428 kfree(trans);
429 return ERR_PTR(err);
430}
431
432static struct p9_trans_module p9_tcp_trans = {
433 .name = "tcp",
434 .maxsize = MAX_SOCK_BUF,
435 .def = 1,
436 .create = p9_trans_create_tcp,
437};
438
439static struct p9_trans_module p9_unix_trans = {
440 .name = "unix",
441 .maxsize = MAX_SOCK_BUF,
442 .def = 0,
443 .create = p9_trans_create_unix,
444};
445
446static struct p9_trans_module p9_fd_trans = {
447 .name = "fd",
448 .maxsize = MAX_SOCK_BUF,
449 .def = 0,
450 .create = p9_trans_create_fd,
451};
452
453static int __init p9_trans_fd_init(void)
454{
455 v9fs_register_trans(&p9_tcp_trans);
456 v9fs_register_trans(&p9_unix_trans);
457 v9fs_register_trans(&p9_fd_trans);
458
459 return 1;
460}
461
462static void __exit p9_trans_fd_exit(void) {
463 printk(KERN_ERR "Removal of 9p transports not implemented\n");
464 BUG();
465}
466
467module_init(p9_trans_fd_init);
468module_exit(p9_trans_fd_exit);
469
470MODULE_AUTHOR("Latchesar Ionkov <lucho@ionkov.net>");
471MODULE_AUTHOR("Eric Van Hensbergen <ericvh@gmail.com>");
472MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-24 09:30:24 -0400