2 * linux/fs/9p/vfs_inode_dotl.c
4 * This file contains vfs inode ops for the 9P2000.L protocol.
6 * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
7 * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2
11 * as published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to:
20 * Free Software Foundation
21 * 51 Franklin Street, Fifth Floor
22 * Boston, MA 02111-1301 USA
26 #include <linux/module.h>
27 #include <linux/errno.h>
29 #include <linux/file.h>
30 #include <linux/pagemap.h>
31 #include <linux/stat.h>
32 #include <linux/string.h>
33 #include <linux/inet.h>
34 #include <linux/namei.h>
35 #include <linux/idr.h>
36 #include <linux/sched.h>
37 #include <linux/slab.h>
38 #include <linux/xattr.h>
39 #include <linux/posix_acl.h>
40 #include <net/9p/9p.h>
41 #include <net/9p/client.h>
51 v9fs_vfs_mknod_dotl(struct inode
*dir
, struct dentry
*dentry
, umode_t omode
,
55 * v9fs_get_fsgid_for_create - Helper function to get the gid for creating a
56 * new file system object. This checks the S_ISGID to determine the owning
57 * group of the new file system object.
60 static kgid_t
v9fs_get_fsgid_for_create(struct inode
*dir_inode
)
62 BUG_ON(dir_inode
== NULL
);
64 if (dir_inode
->i_mode
& S_ISGID
) {
65 /* set_gid bit is set.*/
66 return dir_inode
->i_gid
;
68 return current_fsgid();
71 static int v9fs_test_inode_dotl(struct inode
*inode
, void *data
)
73 struct v9fs_inode
*v9inode
= V9FS_I(inode
);
74 struct p9_stat_dotl
*st
= (struct p9_stat_dotl
*)data
;
76 /* don't match inode of different type */
77 if ((inode
->i_mode
& S_IFMT
) != (st
->st_mode
& S_IFMT
))
80 if (inode
->i_generation
!= st
->st_gen
)
83 /* compare qid details */
84 if (memcmp(&v9inode
->qid
.version
,
85 &st
->qid
.version
, sizeof(v9inode
->qid
.version
)))
88 if (v9inode
->qid
.type
!= st
->qid
.type
)
93 /* Always get a new inode */
94 static int v9fs_test_new_inode_dotl(struct inode
*inode
, void *data
)
99 static int v9fs_set_inode_dotl(struct inode
*inode
, void *data
)
101 struct v9fs_inode
*v9inode
= V9FS_I(inode
);
102 struct p9_stat_dotl
*st
= (struct p9_stat_dotl
*)data
;
104 memcpy(&v9inode
->qid
, &st
->qid
, sizeof(st
->qid
));
105 inode
->i_generation
= st
->st_gen
;
109 static struct inode
*v9fs_qid_iget_dotl(struct super_block
*sb
,
112 struct p9_stat_dotl
*st
,
118 struct v9fs_session_info
*v9ses
= sb
->s_fs_info
;
119 int (*test
)(struct inode
*, void *);
122 test
= v9fs_test_new_inode_dotl
;
124 test
= v9fs_test_inode_dotl
;
126 i_ino
= v9fs_qid2ino(qid
);
127 inode
= iget5_locked(sb
, i_ino
, test
, v9fs_set_inode_dotl
, st
);
129 return ERR_PTR(-ENOMEM
);
130 if (!(inode
->i_state
& I_NEW
))
133 * initialize the inode with the stat info
134 * FIXME!! we may need support for stale inodes
137 inode
->i_ino
= i_ino
;
138 retval
= v9fs_init_inode(v9ses
, inode
,
139 st
->st_mode
, new_decode_dev(st
->st_rdev
));
143 v9fs_stat2inode_dotl(st
, inode
);
144 v9fs_cache_inode_get_cookie(inode
);
145 retval
= v9fs_get_acl(inode
, fid
);
149 unlock_new_inode(inode
);
152 unlock_new_inode(inode
);
154 return ERR_PTR(retval
);
159 v9fs_inode_from_fid_dotl(struct v9fs_session_info
*v9ses
, struct p9_fid
*fid
,
160 struct super_block
*sb
, int new)
162 struct p9_stat_dotl
*st
;
163 struct inode
*inode
= NULL
;
165 st
= p9_client_getattr_dotl(fid
, P9_STATS_BASIC
| P9_STATS_GEN
);
169 inode
= v9fs_qid_iget_dotl(sb
, &st
->qid
, fid
, st
, new);
174 struct dotl_openflag_map
{
179 static int v9fs_mapped_dotl_flags(int flags
)
183 struct dotl_openflag_map dotl_oflag_map
[] = {
184 { O_CREAT
, P9_DOTL_CREATE
},
185 { O_EXCL
, P9_DOTL_EXCL
},
186 { O_NOCTTY
, P9_DOTL_NOCTTY
},
187 { O_APPEND
, P9_DOTL_APPEND
},
188 { O_NONBLOCK
, P9_DOTL_NONBLOCK
},
189 { O_DSYNC
, P9_DOTL_DSYNC
},
190 { FASYNC
, P9_DOTL_FASYNC
},
191 { O_DIRECT
, P9_DOTL_DIRECT
},
192 { O_LARGEFILE
, P9_DOTL_LARGEFILE
},
193 { O_DIRECTORY
, P9_DOTL_DIRECTORY
},
194 { O_NOFOLLOW
, P9_DOTL_NOFOLLOW
},
195 { O_NOATIME
, P9_DOTL_NOATIME
},
196 { O_CLOEXEC
, P9_DOTL_CLOEXEC
},
197 { O_SYNC
, P9_DOTL_SYNC
},
199 for (i
= 0; i
< ARRAY_SIZE(dotl_oflag_map
); i
++) {
200 if (flags
& dotl_oflag_map
[i
].open_flag
)
201 rflags
|= dotl_oflag_map
[i
].dotl_flag
;
207 * v9fs_open_to_dotl_flags- convert Linux specific open flags to
209 * @flags: flags to convert
211 int v9fs_open_to_dotl_flags(int flags
)
216 * We have same bits for P9_DOTL_READONLY, P9_DOTL_WRONLY
217 * and P9_DOTL_NOACCESS
219 rflags
|= flags
& O_ACCMODE
;
220 rflags
|= v9fs_mapped_dotl_flags(flags
);
226 * v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol.
227 * @dir: directory inode that is being created
228 * @dentry: dentry that is being deleted
229 * @mode: create permissions
234 v9fs_vfs_create_dotl(struct inode
*dir
, struct dentry
*dentry
, umode_t omode
,
237 return v9fs_vfs_mknod_dotl(dir
, dentry
, omode
, 0);
241 v9fs_vfs_atomic_open_dotl(struct inode
*dir
, struct dentry
*dentry
,
242 struct file
*file
, unsigned flags
, umode_t omode
,
251 struct p9_fid
*fid
= NULL
;
252 struct v9fs_inode
*v9inode
;
253 struct p9_fid
*dfid
, *ofid
, *inode_fid
;
254 struct v9fs_session_info
*v9ses
;
255 struct posix_acl
*pacl
= NULL
, *dacl
= NULL
;
256 struct dentry
*res
= NULL
;
258 if (d_unhashed(dentry
)) {
259 res
= v9fs_vfs_lookup(dir
, dentry
, 0);
268 if (!(flags
& O_CREAT
) || dentry
->d_inode
)
269 return finish_no_open(file
, res
);
271 v9ses
= v9fs_inode2v9ses(dir
);
273 name
= (char *) dentry
->d_name
.name
;
274 p9_debug(P9_DEBUG_VFS
, "name:%s flags:0x%x mode:0x%hx\n",
277 dfid
= v9fs_fid_lookup(dentry
->d_parent
);
280 p9_debug(P9_DEBUG_VFS
, "fid lookup failed %d\n", err
);
284 /* clone a fid to use for creation */
285 ofid
= p9_client_walk(dfid
, 0, NULL
, 1);
288 p9_debug(P9_DEBUG_VFS
, "p9_client_walk failed %d\n", err
);
292 gid
= v9fs_get_fsgid_for_create(dir
);
295 /* Update mode based on ACL value */
296 err
= v9fs_acl_mode(dir
, &mode
, &dacl
, &pacl
);
298 p9_debug(P9_DEBUG_VFS
, "Failed to get acl values in creat %d\n",
302 err
= p9_client_create_dotl(ofid
, name
, v9fs_open_to_dotl_flags(flags
),
305 p9_debug(P9_DEBUG_VFS
, "p9_client_open_dotl failed in creat %d\n",
309 v9fs_invalidate_inode_attr(dir
);
311 /* instantiate inode and assign the unopened fid to the dentry */
312 fid
= p9_client_walk(dfid
, 1, &name
, 1);
315 p9_debug(P9_DEBUG_VFS
, "p9_client_walk failed %d\n", err
);
319 inode
= v9fs_get_new_inode_from_fid(v9ses
, fid
, dir
->i_sb
);
321 err
= PTR_ERR(inode
);
322 p9_debug(P9_DEBUG_VFS
, "inode creation failed %d\n", err
);
325 /* Now set the ACL based on the default value */
326 v9fs_set_create_acl(inode
, fid
, dacl
, pacl
);
328 v9fs_fid_add(dentry
, fid
);
329 d_instantiate(dentry
, inode
);
331 v9inode
= V9FS_I(inode
);
332 mutex_lock(&v9inode
->v_mutex
);
333 if (v9ses
->cache
&& !v9inode
->writeback_fid
&&
334 ((flags
& O_ACCMODE
) != O_RDONLY
)) {
336 * clone a fid and add it to writeback_fid
337 * we do it during open time instead of
338 * page dirty time via write_begin/page_mkwrite
339 * because we want write after unlink usecase
342 inode_fid
= v9fs_writeback_fid(dentry
);
343 if (IS_ERR(inode_fid
)) {
344 err
= PTR_ERR(inode_fid
);
345 mutex_unlock(&v9inode
->v_mutex
);
346 goto err_clunk_old_fid
;
348 v9inode
->writeback_fid
= (void *) inode_fid
;
350 mutex_unlock(&v9inode
->v_mutex
);
351 /* Since we are opening a file, assign the open fid to the file */
352 err
= finish_open(file
, dentry
, generic_file_open
, opened
);
354 goto err_clunk_old_fid
;
355 file
->private_data
= ofid
;
357 v9fs_cache_inode_set_cookie(inode
, file
);
358 *opened
|= FILE_CREATED
;
360 v9fs_put_acl(dacl
, pacl
);
366 p9_client_clunk(fid
);
369 p9_client_clunk(ofid
);
374 * v9fs_vfs_mkdir_dotl - VFS mkdir hook to create a directory
375 * @dir: inode that is being unlinked
376 * @dentry: dentry that is being unlinked
377 * @mode: mode for new directory
381 static int v9fs_vfs_mkdir_dotl(struct inode
*dir
,
382 struct dentry
*dentry
, umode_t omode
)
385 struct v9fs_session_info
*v9ses
;
386 struct p9_fid
*fid
= NULL
, *dfid
= NULL
;
392 struct dentry
*dir_dentry
;
393 struct posix_acl
*dacl
= NULL
, *pacl
= NULL
;
395 p9_debug(P9_DEBUG_VFS
, "name %s\n", dentry
->d_name
.name
);
397 v9ses
= v9fs_inode2v9ses(dir
);
400 if (dir
->i_mode
& S_ISGID
)
403 dir_dentry
= dentry
->d_parent
;
404 dfid
= v9fs_fid_lookup(dir_dentry
);
407 p9_debug(P9_DEBUG_VFS
, "fid lookup failed %d\n", err
);
412 gid
= v9fs_get_fsgid_for_create(dir
);
414 /* Update mode based on ACL value */
415 err
= v9fs_acl_mode(dir
, &mode
, &dacl
, &pacl
);
417 p9_debug(P9_DEBUG_VFS
, "Failed to get acl values in mkdir %d\n",
421 name
= (char *) dentry
->d_name
.name
;
422 err
= p9_client_mkdir_dotl(dfid
, name
, mode
, gid
, &qid
);
426 fid
= p9_client_walk(dfid
, 1, &name
, 1);
429 p9_debug(P9_DEBUG_VFS
, "p9_client_walk failed %d\n",
435 /* instantiate inode and assign the unopened fid to the dentry */
436 if (v9ses
->cache
== CACHE_LOOSE
|| v9ses
->cache
== CACHE_FSCACHE
) {
437 inode
= v9fs_get_new_inode_from_fid(v9ses
, fid
, dir
->i_sb
);
439 err
= PTR_ERR(inode
);
440 p9_debug(P9_DEBUG_VFS
, "inode creation failed %d\n",
444 v9fs_fid_add(dentry
, fid
);
445 v9fs_set_create_acl(inode
, fid
, dacl
, pacl
);
446 d_instantiate(dentry
, inode
);
451 * Not in cached mode. No need to populate
452 * inode with stat. We need to get an inode
453 * so that we can set the acl with dentry
455 inode
= v9fs_get_inode(dir
->i_sb
, mode
, 0);
457 err
= PTR_ERR(inode
);
460 v9fs_set_create_acl(inode
, fid
, dacl
, pacl
);
461 d_instantiate(dentry
, inode
);
464 v9fs_invalidate_inode_attr(dir
);
467 p9_client_clunk(fid
);
468 v9fs_put_acl(dacl
, pacl
);
473 v9fs_vfs_getattr_dotl(struct vfsmount
*mnt
, struct dentry
*dentry
,
477 struct v9fs_session_info
*v9ses
;
479 struct p9_stat_dotl
*st
;
481 p9_debug(P9_DEBUG_VFS
, "dentry: %p\n", dentry
);
483 v9ses
= v9fs_dentry2v9ses(dentry
);
484 if (v9ses
->cache
== CACHE_LOOSE
|| v9ses
->cache
== CACHE_FSCACHE
) {
485 generic_fillattr(dentry
->d_inode
, stat
);
488 fid
= v9fs_fid_lookup(dentry
);
492 /* Ask for all the fields in stat structure. Server will return
493 * whatever it supports
496 st
= p9_client_getattr_dotl(fid
, P9_STATS_ALL
);
500 v9fs_stat2inode_dotl(st
, dentry
->d_inode
);
501 generic_fillattr(dentry
->d_inode
, stat
);
502 /* Change block size to what the server returned */
503 stat
->blksize
= st
->st_blksize
;
512 #define P9_ATTR_MODE (1 << 0)
513 #define P9_ATTR_UID (1 << 1)
514 #define P9_ATTR_GID (1 << 2)
515 #define P9_ATTR_SIZE (1 << 3)
516 #define P9_ATTR_ATIME (1 << 4)
517 #define P9_ATTR_MTIME (1 << 5)
518 #define P9_ATTR_CTIME (1 << 6)
519 #define P9_ATTR_ATIME_SET (1 << 7)
520 #define P9_ATTR_MTIME_SET (1 << 8)
522 struct dotl_iattr_map
{
527 static int v9fs_mapped_iattr_valid(int iattr_valid
)
530 int p9_iattr_valid
= 0;
531 struct dotl_iattr_map dotl_iattr_map
[] = {
532 { ATTR_MODE
, P9_ATTR_MODE
},
533 { ATTR_UID
, P9_ATTR_UID
},
534 { ATTR_GID
, P9_ATTR_GID
},
535 { ATTR_SIZE
, P9_ATTR_SIZE
},
536 { ATTR_ATIME
, P9_ATTR_ATIME
},
537 { ATTR_MTIME
, P9_ATTR_MTIME
},
538 { ATTR_CTIME
, P9_ATTR_CTIME
},
539 { ATTR_ATIME_SET
, P9_ATTR_ATIME_SET
},
540 { ATTR_MTIME_SET
, P9_ATTR_MTIME_SET
},
542 for (i
= 0; i
< ARRAY_SIZE(dotl_iattr_map
); i
++) {
543 if (iattr_valid
& dotl_iattr_map
[i
].iattr_valid
)
544 p9_iattr_valid
|= dotl_iattr_map
[i
].p9_iattr_valid
;
546 return p9_iattr_valid
;
550 * v9fs_vfs_setattr_dotl - set file metadata
551 * @dentry: file whose metadata to set
552 * @iattr: metadata assignment structure
556 int v9fs_vfs_setattr_dotl(struct dentry
*dentry
, struct iattr
*iattr
)
559 struct v9fs_session_info
*v9ses
;
561 struct p9_iattr_dotl p9attr
;
562 struct inode
*inode
= dentry
->d_inode
;
564 p9_debug(P9_DEBUG_VFS
, "\n");
566 retval
= inode_change_ok(inode
, iattr
);
570 p9attr
.valid
= v9fs_mapped_iattr_valid(iattr
->ia_valid
);
571 p9attr
.mode
= iattr
->ia_mode
;
572 p9attr
.uid
= iattr
->ia_uid
;
573 p9attr
.gid
= iattr
->ia_gid
;
574 p9attr
.size
= iattr
->ia_size
;
575 p9attr
.atime_sec
= iattr
->ia_atime
.tv_sec
;
576 p9attr
.atime_nsec
= iattr
->ia_atime
.tv_nsec
;
577 p9attr
.mtime_sec
= iattr
->ia_mtime
.tv_sec
;
578 p9attr
.mtime_nsec
= iattr
->ia_mtime
.tv_nsec
;
581 v9ses
= v9fs_dentry2v9ses(dentry
);
582 fid
= v9fs_fid_lookup(dentry
);
586 /* Write all dirty data */
587 if (S_ISREG(inode
->i_mode
))
588 filemap_write_and_wait(inode
->i_mapping
);
590 retval
= p9_client_setattr(fid
, &p9attr
);
594 if ((iattr
->ia_valid
& ATTR_SIZE
) &&
595 iattr
->ia_size
!= i_size_read(inode
))
596 truncate_setsize(inode
, iattr
->ia_size
);
598 v9fs_invalidate_inode_attr(inode
);
599 setattr_copy(inode
, iattr
);
600 mark_inode_dirty(inode
);
601 if (iattr
->ia_valid
& ATTR_MODE
) {
602 /* We also want to update ACL when we update mode bits */
603 retval
= v9fs_acl_chmod(inode
, fid
);
611 * v9fs_stat2inode_dotl - populate an inode structure with stat info
612 * @stat: stat structure
613 * @inode: inode to populate
614 * @sb: superblock of filesystem
619 v9fs_stat2inode_dotl(struct p9_stat_dotl
*stat
, struct inode
*inode
)
622 struct v9fs_inode
*v9inode
= V9FS_I(inode
);
624 if ((stat
->st_result_mask
& P9_STATS_BASIC
) == P9_STATS_BASIC
) {
625 inode
->i_atime
.tv_sec
= stat
->st_atime_sec
;
626 inode
->i_atime
.tv_nsec
= stat
->st_atime_nsec
;
627 inode
->i_mtime
.tv_sec
= stat
->st_mtime_sec
;
628 inode
->i_mtime
.tv_nsec
= stat
->st_mtime_nsec
;
629 inode
->i_ctime
.tv_sec
= stat
->st_ctime_sec
;
630 inode
->i_ctime
.tv_nsec
= stat
->st_ctime_nsec
;
631 inode
->i_uid
= stat
->st_uid
;
632 inode
->i_gid
= stat
->st_gid
;
633 set_nlink(inode
, stat
->st_nlink
);
635 mode
= stat
->st_mode
& S_IALLUGO
;
636 mode
|= inode
->i_mode
& ~S_IALLUGO
;
637 inode
->i_mode
= mode
;
639 i_size_write(inode
, stat
->st_size
);
640 inode
->i_blocks
= stat
->st_blocks
;
642 if (stat
->st_result_mask
& P9_STATS_ATIME
) {
643 inode
->i_atime
.tv_sec
= stat
->st_atime_sec
;
644 inode
->i_atime
.tv_nsec
= stat
->st_atime_nsec
;
646 if (stat
->st_result_mask
& P9_STATS_MTIME
) {
647 inode
->i_mtime
.tv_sec
= stat
->st_mtime_sec
;
648 inode
->i_mtime
.tv_nsec
= stat
->st_mtime_nsec
;
650 if (stat
->st_result_mask
& P9_STATS_CTIME
) {
651 inode
->i_ctime
.tv_sec
= stat
->st_ctime_sec
;
652 inode
->i_ctime
.tv_nsec
= stat
->st_ctime_nsec
;
654 if (stat
->st_result_mask
& P9_STATS_UID
)
655 inode
->i_uid
= stat
->st_uid
;
656 if (stat
->st_result_mask
& P9_STATS_GID
)
657 inode
->i_gid
= stat
->st_gid
;
658 if (stat
->st_result_mask
& P9_STATS_NLINK
)
659 set_nlink(inode
, stat
->st_nlink
);
660 if (stat
->st_result_mask
& P9_STATS_MODE
) {
661 inode
->i_mode
= stat
->st_mode
;
662 if ((S_ISBLK(inode
->i_mode
)) ||
663 (S_ISCHR(inode
->i_mode
)))
664 init_special_inode(inode
, inode
->i_mode
,
667 if (stat
->st_result_mask
& P9_STATS_RDEV
)
668 inode
->i_rdev
= new_decode_dev(stat
->st_rdev
);
669 if (stat
->st_result_mask
& P9_STATS_SIZE
)
670 i_size_write(inode
, stat
->st_size
);
671 if (stat
->st_result_mask
& P9_STATS_BLOCKS
)
672 inode
->i_blocks
= stat
->st_blocks
;
674 if (stat
->st_result_mask
& P9_STATS_GEN
)
675 inode
->i_generation
= stat
->st_gen
;
677 /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION
678 * because the inode structure does not have fields for them.
680 v9inode
->cache_validity
&= ~V9FS_INO_INVALID_ATTR
;
684 v9fs_vfs_symlink_dotl(struct inode
*dir
, struct dentry
*dentry
,
693 struct p9_fid
*fid
= NULL
;
694 struct v9fs_session_info
*v9ses
;
696 name
= (char *) dentry
->d_name
.name
;
697 p9_debug(P9_DEBUG_VFS
, "%lu,%s,%s\n", dir
->i_ino
, name
, symname
);
698 v9ses
= v9fs_inode2v9ses(dir
);
700 dfid
= v9fs_fid_lookup(dentry
->d_parent
);
703 p9_debug(P9_DEBUG_VFS
, "fid lookup failed %d\n", err
);
707 gid
= v9fs_get_fsgid_for_create(dir
);
709 /* Server doesn't alter fid on TSYMLINK. Hence no need to clone it. */
710 err
= p9_client_symlink(dfid
, name
, (char *)symname
, gid
, &qid
);
713 p9_debug(P9_DEBUG_VFS
, "p9_client_symlink failed %d\n", err
);
717 v9fs_invalidate_inode_attr(dir
);
719 /* Now walk from the parent so we can get an unopened fid. */
720 fid
= p9_client_walk(dfid
, 1, &name
, 1);
723 p9_debug(P9_DEBUG_VFS
, "p9_client_walk failed %d\n",
729 /* instantiate inode and assign the unopened fid to dentry */
730 inode
= v9fs_get_new_inode_from_fid(v9ses
, fid
, dir
->i_sb
);
732 err
= PTR_ERR(inode
);
733 p9_debug(P9_DEBUG_VFS
, "inode creation failed %d\n",
737 v9fs_fid_add(dentry
, fid
);
738 d_instantiate(dentry
, inode
);
742 /* Not in cached mode. No need to populate inode with stat */
743 inode
= v9fs_get_inode(dir
->i_sb
, S_IFLNK
, 0);
745 err
= PTR_ERR(inode
);
748 d_instantiate(dentry
, inode
);
753 p9_client_clunk(fid
);
759 * v9fs_vfs_link_dotl - create a hardlink for dotl
760 * @old_dentry: dentry for file to link to
761 * @dir: inode destination for new link
762 * @dentry: dentry for link
767 v9fs_vfs_link_dotl(struct dentry
*old_dentry
, struct inode
*dir
,
768 struct dentry
*dentry
)
772 struct dentry
*dir_dentry
;
773 struct p9_fid
*dfid
, *oldfid
;
774 struct v9fs_session_info
*v9ses
;
776 p9_debug(P9_DEBUG_VFS
, "dir ino: %lu, old_name: %s, new_name: %s\n",
777 dir
->i_ino
, old_dentry
->d_name
.name
, dentry
->d_name
.name
);
779 v9ses
= v9fs_inode2v9ses(dir
);
780 dir_dentry
= dentry
->d_parent
;
781 dfid
= v9fs_fid_lookup(dir_dentry
);
783 return PTR_ERR(dfid
);
785 oldfid
= v9fs_fid_lookup(old_dentry
);
787 return PTR_ERR(oldfid
);
789 name
= (char *) dentry
->d_name
.name
;
791 err
= p9_client_link(dfid
, oldfid
, (char *)dentry
->d_name
.name
);
794 p9_debug(P9_DEBUG_VFS
, "p9_client_link failed %d\n", err
);
798 v9fs_invalidate_inode_attr(dir
);
799 if (v9ses
->cache
== CACHE_LOOSE
|| v9ses
->cache
== CACHE_FSCACHE
) {
800 /* Get the latest stat info from server. */
802 fid
= v9fs_fid_lookup(old_dentry
);
806 v9fs_refresh_inode_dotl(fid
, old_dentry
->d_inode
);
808 ihold(old_dentry
->d_inode
);
809 d_instantiate(dentry
, old_dentry
->d_inode
);
815 * v9fs_vfs_mknod_dotl - create a special file
816 * @dir: inode destination for new link
817 * @dentry: dentry for file
818 * @mode: mode for creation
819 * @rdev: device associated with special file
823 v9fs_vfs_mknod_dotl(struct inode
*dir
, struct dentry
*dentry
, umode_t omode
,
830 struct v9fs_session_info
*v9ses
;
831 struct p9_fid
*fid
= NULL
, *dfid
= NULL
;
834 struct dentry
*dir_dentry
;
835 struct posix_acl
*dacl
= NULL
, *pacl
= NULL
;
837 p9_debug(P9_DEBUG_VFS
, " %lu,%s mode: %hx MAJOR: %u MINOR: %u\n",
838 dir
->i_ino
, dentry
->d_name
.name
, omode
,
839 MAJOR(rdev
), MINOR(rdev
));
841 if (!new_valid_dev(rdev
))
844 v9ses
= v9fs_inode2v9ses(dir
);
845 dir_dentry
= dentry
->d_parent
;
846 dfid
= v9fs_fid_lookup(dir_dentry
);
849 p9_debug(P9_DEBUG_VFS
, "fid lookup failed %d\n", err
);
854 gid
= v9fs_get_fsgid_for_create(dir
);
856 /* Update mode based on ACL value */
857 err
= v9fs_acl_mode(dir
, &mode
, &dacl
, &pacl
);
859 p9_debug(P9_DEBUG_VFS
, "Failed to get acl values in mknod %d\n",
863 name
= (char *) dentry
->d_name
.name
;
865 err
= p9_client_mknod_dotl(dfid
, name
, mode
, rdev
, gid
, &qid
);
869 v9fs_invalidate_inode_attr(dir
);
870 fid
= p9_client_walk(dfid
, 1, &name
, 1);
873 p9_debug(P9_DEBUG_VFS
, "p9_client_walk failed %d\n",
879 /* instantiate inode and assign the unopened fid to the dentry */
880 if (v9ses
->cache
== CACHE_LOOSE
|| v9ses
->cache
== CACHE_FSCACHE
) {
881 inode
= v9fs_get_new_inode_from_fid(v9ses
, fid
, dir
->i_sb
);
883 err
= PTR_ERR(inode
);
884 p9_debug(P9_DEBUG_VFS
, "inode creation failed %d\n",
888 v9fs_set_create_acl(inode
, fid
, dacl
, pacl
);
889 v9fs_fid_add(dentry
, fid
);
890 d_instantiate(dentry
, inode
);
895 * Not in cached mode. No need to populate inode with stat.
896 * socket syscall returns a fd, so we need instantiate
898 inode
= v9fs_get_inode(dir
->i_sb
, mode
, rdev
);
900 err
= PTR_ERR(inode
);
903 v9fs_set_create_acl(inode
, fid
, dacl
, pacl
);
904 d_instantiate(dentry
, inode
);
908 p9_client_clunk(fid
);
909 v9fs_put_acl(dacl
, pacl
);
914 * v9fs_vfs_follow_link_dotl - follow a symlink path
915 * @dentry: dentry for symlink
921 v9fs_vfs_follow_link_dotl(struct dentry
*dentry
, struct nameidata
*nd
)
925 char *link
= __getname();
928 p9_debug(P9_DEBUG_VFS
, "%s\n", dentry
->d_name
.name
);
931 link
= ERR_PTR(-ENOMEM
);
934 fid
= v9fs_fid_lookup(dentry
);
937 link
= ERR_CAST(fid
);
940 retval
= p9_client_readlink(fid
, &target
);
942 strcpy(link
, target
);
947 link
= ERR_PTR(retval
);
949 nd_set_link(nd
, link
);
953 int v9fs_refresh_inode_dotl(struct p9_fid
*fid
, struct inode
*inode
)
956 struct p9_stat_dotl
*st
;
957 struct v9fs_session_info
*v9ses
;
959 v9ses
= v9fs_inode2v9ses(inode
);
960 st
= p9_client_getattr_dotl(fid
, P9_STATS_ALL
);
964 * Don't update inode if the file type is different
966 if ((inode
->i_mode
& S_IFMT
) != (st
->st_mode
& S_IFMT
))
969 spin_lock(&inode
->i_lock
);
971 * We don't want to refresh inode->i_size,
972 * because we may have cached data
974 i_size
= inode
->i_size
;
975 v9fs_stat2inode_dotl(st
, inode
);
977 inode
->i_size
= i_size
;
978 spin_unlock(&inode
->i_lock
);
984 const struct inode_operations v9fs_dir_inode_operations_dotl
= {
985 .create
= v9fs_vfs_create_dotl
,
986 .atomic_open
= v9fs_vfs_atomic_open_dotl
,
987 .lookup
= v9fs_vfs_lookup
,
988 .link
= v9fs_vfs_link_dotl
,
989 .symlink
= v9fs_vfs_symlink_dotl
,
990 .unlink
= v9fs_vfs_unlink
,
991 .mkdir
= v9fs_vfs_mkdir_dotl
,
992 .rmdir
= v9fs_vfs_rmdir
,
993 .mknod
= v9fs_vfs_mknod_dotl
,
994 .rename
= v9fs_vfs_rename
,
995 .getattr
= v9fs_vfs_getattr_dotl
,
996 .setattr
= v9fs_vfs_setattr_dotl
,
997 .setxattr
= generic_setxattr
,
998 .getxattr
= generic_getxattr
,
999 .removexattr
= generic_removexattr
,
1000 .listxattr
= v9fs_listxattr
,
1001 .get_acl
= v9fs_iop_get_acl
,
1004 const struct inode_operations v9fs_file_inode_operations_dotl
= {
1005 .getattr
= v9fs_vfs_getattr_dotl
,
1006 .setattr
= v9fs_vfs_setattr_dotl
,
1007 .setxattr
= generic_setxattr
,
1008 .getxattr
= generic_getxattr
,
1009 .removexattr
= generic_removexattr
,
1010 .listxattr
= v9fs_listxattr
,
1011 .get_acl
= v9fs_iop_get_acl
,
1014 const struct inode_operations v9fs_symlink_inode_operations_dotl
= {
1015 .readlink
= generic_readlink
,
1016 .follow_link
= v9fs_vfs_follow_link_dotl
,
1017 .put_link
= v9fs_vfs_put_link
,
1018 .getattr
= v9fs_vfs_getattr_dotl
,
1019 .setattr
= v9fs_vfs_setattr_dotl
,
1020 .setxattr
= generic_setxattr
,
1021 .getxattr
= generic_getxattr
,
1022 .removexattr
= generic_removexattr
,
1023 .listxattr
= v9fs_listxattr
,