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, int 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 gid_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();
72 * v9fs_dentry_from_dir_inode - helper function to get the dentry from
77 static struct dentry *v9fs_dentry_from_dir_inode(struct inode *inode)
79 struct dentry *dentry;
81 spin_lock(&inode->i_lock);
82 /* Directory should have only one entry. */
83 BUG_ON(S_ISDIR(inode->i_mode) && !list_is_singular(&inode->i_dentry));
84 dentry = list_entry(inode->i_dentry.next, struct dentry, d_alias);
85 spin_unlock(&inode->i_lock);
89 static int v9fs_test_inode_dotl(struct inode *inode, void *data)
91 struct v9fs_inode *v9inode = V9FS_I(inode);
92 struct p9_stat_dotl *st = (struct p9_stat_dotl *)data;
94 /* don't match inode of different type */
95 if ((inode->i_mode & S_IFMT) != (st->st_mode & S_IFMT))
98 if (inode->i_generation != st->st_gen)
101 /* compare qid details */
102 if (memcmp(&v9inode->qid.version,
103 &st->qid.version, sizeof(v9inode->qid.version)))
106 if (v9inode->qid.type != st->qid.type)
111 /* Always get a new inode */
112 static int v9fs_test_new_inode_dotl(struct inode *inode, void *data)
117 static int v9fs_set_inode_dotl(struct inode *inode, void *data)
119 struct v9fs_inode *v9inode = V9FS_I(inode);
120 struct p9_stat_dotl *st = (struct p9_stat_dotl *)data;
122 memcpy(&v9inode->qid, &st->qid, sizeof(st->qid));
123 inode->i_generation = st->st_gen;
127 static struct inode *v9fs_qid_iget_dotl(struct super_block *sb,
130 struct p9_stat_dotl *st,
136 struct v9fs_session_info *v9ses = sb->s_fs_info;
137 int (*test)(struct inode *, void *);
140 test = v9fs_test_new_inode_dotl;
142 test = v9fs_test_inode_dotl;
144 i_ino = v9fs_qid2ino(qid);
145 inode = iget5_locked(sb, i_ino, test, v9fs_set_inode_dotl, st);
147 return ERR_PTR(-ENOMEM);
148 if (!(inode->i_state & I_NEW))
151 * initialize the inode with the stat info
152 * FIXME!! we may need support for stale inodes
155 inode->i_ino = i_ino;
156 retval = v9fs_init_inode(v9ses, inode,
157 st->st_mode, new_decode_dev(st->st_rdev));
161 v9fs_stat2inode_dotl(st, inode);
162 #ifdef CONFIG_9P_FSCACHE
163 v9fs_cache_inode_get_cookie(inode);
165 retval = v9fs_get_acl(inode, fid);
169 unlock_new_inode(inode);
172 unlock_new_inode(inode);
174 return ERR_PTR(retval);
179 v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid,
180 struct super_block *sb, int new)
182 struct p9_stat_dotl *st;
183 struct inode *inode = NULL;
185 st = p9_client_getattr_dotl(fid, P9_STATS_BASIC | P9_STATS_GEN);
189 inode = v9fs_qid_iget_dotl(sb, &st->qid, fid, st, new);
194 struct dotl_openflag_map {
199 static int v9fs_mapped_dotl_flags(int flags)
203 struct dotl_openflag_map dotl_oflag_map[] = {
204 { O_CREAT, P9_DOTL_CREATE },
205 { O_EXCL, P9_DOTL_EXCL },
206 { O_NOCTTY, P9_DOTL_NOCTTY },
207 { O_TRUNC, P9_DOTL_TRUNC },
208 { O_APPEND, P9_DOTL_APPEND },
209 { O_NONBLOCK, P9_DOTL_NONBLOCK },
210 { O_DSYNC, P9_DOTL_DSYNC },
211 { FASYNC, P9_DOTL_FASYNC },
212 { O_DIRECT, P9_DOTL_DIRECT },
213 { O_LARGEFILE, P9_DOTL_LARGEFILE },
214 { O_DIRECTORY, P9_DOTL_DIRECTORY },
215 { O_NOFOLLOW, P9_DOTL_NOFOLLOW },
216 { O_NOATIME, P9_DOTL_NOATIME },
217 { O_CLOEXEC, P9_DOTL_CLOEXEC },
218 { O_SYNC, P9_DOTL_SYNC},
220 for (i = 0; i < ARRAY_SIZE(dotl_oflag_map); i++) {
221 if (flags & dotl_oflag_map[i].open_flag)
222 rflags |= dotl_oflag_map[i].dotl_flag;
228 * v9fs_open_to_dotl_flags- convert Linux specific open flags to
230 * @flags: flags to convert
232 int v9fs_open_to_dotl_flags(int flags)
237 * We have same bits for P9_DOTL_READONLY, P9_DOTL_WRONLY
238 * and P9_DOTL_NOACCESS
240 rflags |= flags & O_ACCMODE;
241 rflags |= v9fs_mapped_dotl_flags(flags);
247 * v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol.
248 * @dir: directory inode that is being created
249 * @dentry: dentry that is being deleted
250 * @mode: create permissions
251 * @nd: path information
256 v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
257 struct nameidata *nd)
267 struct p9_fid *fid = NULL;
268 struct v9fs_inode *v9inode;
269 struct p9_fid *dfid, *ofid, *inode_fid;
270 struct v9fs_session_info *v9ses;
271 struct posix_acl *pacl = NULL, *dacl = NULL;
273 v9ses = v9fs_inode2v9ses(dir);
275 flags = nd->intent.open.flags;
278 * create call without LOOKUP_OPEN is due
279 * to mknod of regular files. So use mknod
282 return v9fs_vfs_mknod_dotl(dir, dentry, omode, 0);
285 name = (char *) dentry->d_name.name;
286 P9_DPRINTK(P9_DEBUG_VFS, "v9fs_vfs_create_dotl: name:%s flags:0x%x "
287 "mode:0x%x\n", name, flags, omode);
289 dfid = v9fs_fid_lookup(dentry->d_parent);
292 P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
296 /* clone a fid to use for creation */
297 ofid = p9_client_walk(dfid, 0, NULL, 1);
300 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
304 gid = v9fs_get_fsgid_for_create(dir);
307 /* Update mode based on ACL value */
308 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
310 P9_DPRINTK(P9_DEBUG_VFS,
311 "Failed to get acl values in creat %d\n", err);
314 err = p9_client_create_dotl(ofid, name, v9fs_open_to_dotl_flags(flags),
317 P9_DPRINTK(P9_DEBUG_VFS,
318 "p9_client_open_dotl failed in creat %d\n",
322 v9fs_invalidate_inode_attr(dir);
324 /* instantiate inode and assign the unopened fid to the dentry */
325 fid = p9_client_walk(dfid, 1, &name, 1);
328 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
332 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
334 err = PTR_ERR(inode);
335 P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err);
338 err = v9fs_fid_add(dentry, fid);
341 d_instantiate(dentry, inode);
343 /* Now set the ACL based on the default value */
344 v9fs_set_create_acl(dentry, &dacl, &pacl);
346 v9inode = V9FS_I(inode);
347 mutex_lock(&v9inode->v_mutex);
348 if (v9ses->cache && !v9inode->writeback_fid &&
349 ((flags & O_ACCMODE) != O_RDONLY)) {
351 * clone a fid and add it to writeback_fid
352 * we do it during open time instead of
353 * page dirty time via write_begin/page_mkwrite
354 * because we want write after unlink usecase
357 inode_fid = v9fs_writeback_fid(dentry);
358 if (IS_ERR(inode_fid)) {
359 err = PTR_ERR(inode_fid);
360 mutex_unlock(&v9inode->v_mutex);
361 goto err_clunk_old_fid;
363 v9inode->writeback_fid = (void *) inode_fid;
365 mutex_unlock(&v9inode->v_mutex);
366 /* Since we are opening a file, assign the open fid to the file */
367 filp = lookup_instantiate_filp(nd, dentry, generic_file_open);
370 goto err_clunk_old_fid;
372 filp->private_data = ofid;
373 #ifdef CONFIG_9P_FSCACHE
375 v9fs_cache_inode_set_cookie(inode, filp);
381 p9_client_clunk(fid);
384 p9_client_clunk(ofid);
385 v9fs_set_create_acl(NULL, &dacl, &pacl);
390 * v9fs_vfs_mkdir_dotl - VFS mkdir hook to create a directory
391 * @dir: inode that is being unlinked
392 * @dentry: dentry that is being unlinked
393 * @mode: mode for new directory
397 static int v9fs_vfs_mkdir_dotl(struct inode *dir,
398 struct dentry *dentry, umode_t omode)
401 struct v9fs_session_info *v9ses;
402 struct p9_fid *fid = NULL, *dfid = NULL;
408 struct dentry *dir_dentry;
409 struct posix_acl *dacl = NULL, *pacl = NULL;
411 P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name);
413 v9ses = v9fs_inode2v9ses(dir);
416 if (dir->i_mode & S_ISGID)
419 dir_dentry = v9fs_dentry_from_dir_inode(dir);
420 dfid = v9fs_fid_lookup(dir_dentry);
423 P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
428 gid = v9fs_get_fsgid_for_create(dir);
430 /* Update mode based on ACL value */
431 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
433 P9_DPRINTK(P9_DEBUG_VFS,
434 "Failed to get acl values in mkdir %d\n", err);
437 name = (char *) dentry->d_name.name;
438 err = p9_client_mkdir_dotl(dfid, name, mode, gid, &qid);
442 /* instantiate inode and assign the unopened fid to the dentry */
443 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
444 fid = p9_client_walk(dfid, 1, &name, 1);
447 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
453 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
455 err = PTR_ERR(inode);
456 P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n",
460 err = v9fs_fid_add(dentry, fid);
463 d_instantiate(dentry, inode);
467 * Not in cached mode. No need to populate
468 * inode with stat. We need to get an inode
469 * so that we can set the acl with dentry
471 inode = v9fs_get_inode(dir->i_sb, mode, 0);
473 err = PTR_ERR(inode);
476 d_instantiate(dentry, inode);
478 /* Now set the ACL based on the default value */
479 v9fs_set_create_acl(dentry, &dacl, &pacl);
481 v9fs_invalidate_inode_attr(dir);
484 p9_client_clunk(fid);
485 v9fs_set_create_acl(NULL, &dacl, &pacl);
490 v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry,
494 struct v9fs_session_info *v9ses;
496 struct p9_stat_dotl *st;
498 P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry);
500 v9ses = v9fs_dentry2v9ses(dentry);
501 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
502 generic_fillattr(dentry->d_inode, stat);
505 fid = v9fs_fid_lookup(dentry);
509 /* Ask for all the fields in stat structure. Server will return
510 * whatever it supports
513 st = p9_client_getattr_dotl(fid, P9_STATS_ALL);
517 v9fs_stat2inode_dotl(st, dentry->d_inode);
518 generic_fillattr(dentry->d_inode, stat);
519 /* Change block size to what the server returned */
520 stat->blksize = st->st_blksize;
527 * v9fs_vfs_setattr_dotl - set file metadata
528 * @dentry: file whose metadata to set
529 * @iattr: metadata assignment structure
533 int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
536 struct v9fs_session_info *v9ses;
538 struct p9_iattr_dotl p9attr;
540 P9_DPRINTK(P9_DEBUG_VFS, "\n");
542 retval = inode_change_ok(dentry->d_inode, iattr);
546 p9attr.valid = iattr->ia_valid;
547 p9attr.mode = iattr->ia_mode;
548 p9attr.uid = iattr->ia_uid;
549 p9attr.gid = iattr->ia_gid;
550 p9attr.size = iattr->ia_size;
551 p9attr.atime_sec = iattr->ia_atime.tv_sec;
552 p9attr.atime_nsec = iattr->ia_atime.tv_nsec;
553 p9attr.mtime_sec = iattr->ia_mtime.tv_sec;
554 p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec;
557 v9ses = v9fs_dentry2v9ses(dentry);
558 fid = v9fs_fid_lookup(dentry);
562 /* Write all dirty data */
563 if (S_ISREG(dentry->d_inode->i_mode))
564 filemap_write_and_wait(dentry->d_inode->i_mapping);
566 retval = p9_client_setattr(fid, &p9attr);
570 if ((iattr->ia_valid & ATTR_SIZE) &&
571 iattr->ia_size != i_size_read(dentry->d_inode))
572 truncate_setsize(dentry->d_inode, iattr->ia_size);
574 v9fs_invalidate_inode_attr(dentry->d_inode);
575 setattr_copy(dentry->d_inode, iattr);
576 mark_inode_dirty(dentry->d_inode);
577 if (iattr->ia_valid & ATTR_MODE) {
578 /* We also want to update ACL when we update mode bits */
579 retval = v9fs_acl_chmod(dentry);
587 * v9fs_stat2inode_dotl - populate an inode structure with stat info
588 * @stat: stat structure
589 * @inode: inode to populate
590 * @sb: superblock of filesystem
595 v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode)
598 struct v9fs_inode *v9inode = V9FS_I(inode);
600 if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) {
601 inode->i_atime.tv_sec = stat->st_atime_sec;
602 inode->i_atime.tv_nsec = stat->st_atime_nsec;
603 inode->i_mtime.tv_sec = stat->st_mtime_sec;
604 inode->i_mtime.tv_nsec = stat->st_mtime_nsec;
605 inode->i_ctime.tv_sec = stat->st_ctime_sec;
606 inode->i_ctime.tv_nsec = stat->st_ctime_nsec;
607 inode->i_uid = stat->st_uid;
608 inode->i_gid = stat->st_gid;
609 set_nlink(inode, stat->st_nlink);
611 mode = stat->st_mode & S_IALLUGO;
612 mode |= inode->i_mode & ~S_IALLUGO;
613 inode->i_mode = mode;
615 i_size_write(inode, stat->st_size);
616 inode->i_blocks = stat->st_blocks;
618 if (stat->st_result_mask & P9_STATS_ATIME) {
619 inode->i_atime.tv_sec = stat->st_atime_sec;
620 inode->i_atime.tv_nsec = stat->st_atime_nsec;
622 if (stat->st_result_mask & P9_STATS_MTIME) {
623 inode->i_mtime.tv_sec = stat->st_mtime_sec;
624 inode->i_mtime.tv_nsec = stat->st_mtime_nsec;
626 if (stat->st_result_mask & P9_STATS_CTIME) {
627 inode->i_ctime.tv_sec = stat->st_ctime_sec;
628 inode->i_ctime.tv_nsec = stat->st_ctime_nsec;
630 if (stat->st_result_mask & P9_STATS_UID)
631 inode->i_uid = stat->st_uid;
632 if (stat->st_result_mask & P9_STATS_GID)
633 inode->i_gid = stat->st_gid;
634 if (stat->st_result_mask & P9_STATS_NLINK)
635 set_nlink(inode, stat->st_nlink);
636 if (stat->st_result_mask & P9_STATS_MODE) {
637 inode->i_mode = stat->st_mode;
638 if ((S_ISBLK(inode->i_mode)) ||
639 (S_ISCHR(inode->i_mode)))
640 init_special_inode(inode, inode->i_mode,
643 if (stat->st_result_mask & P9_STATS_RDEV)
644 inode->i_rdev = new_decode_dev(stat->st_rdev);
645 if (stat->st_result_mask & P9_STATS_SIZE)
646 i_size_write(inode, stat->st_size);
647 if (stat->st_result_mask & P9_STATS_BLOCKS)
648 inode->i_blocks = stat->st_blocks;
650 if (stat->st_result_mask & P9_STATS_GEN)
651 inode->i_generation = stat->st_gen;
653 /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION
654 * because the inode structure does not have fields for them.
656 v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR;
660 v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry,
669 struct p9_fid *fid = NULL;
670 struct v9fs_session_info *v9ses;
672 name = (char *) dentry->d_name.name;
673 P9_DPRINTK(P9_DEBUG_VFS, "v9fs_vfs_symlink_dotl : %lu,%s,%s\n",
674 dir->i_ino, name, symname);
675 v9ses = v9fs_inode2v9ses(dir);
677 dfid = v9fs_fid_lookup(dentry->d_parent);
680 P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
684 gid = v9fs_get_fsgid_for_create(dir);
686 /* Server doesn't alter fid on TSYMLINK. Hence no need to clone it. */
687 err = p9_client_symlink(dfid, name, (char *)symname, gid, &qid);
690 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_symlink failed %d\n", err);
694 v9fs_invalidate_inode_attr(dir);
696 /* Now walk from the parent so we can get an unopened fid. */
697 fid = p9_client_walk(dfid, 1, &name, 1);
700 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
706 /* instantiate inode and assign the unopened fid to dentry */
707 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
709 err = PTR_ERR(inode);
710 P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n",
714 err = v9fs_fid_add(dentry, fid);
717 d_instantiate(dentry, inode);
720 /* Not in cached mode. No need to populate inode with stat */
721 inode = v9fs_get_inode(dir->i_sb, S_IFLNK, 0);
723 err = PTR_ERR(inode);
726 d_instantiate(dentry, inode);
731 p9_client_clunk(fid);
737 * v9fs_vfs_link_dotl - create a hardlink for dotl
738 * @old_dentry: dentry for file to link to
739 * @dir: inode destination for new link
740 * @dentry: dentry for link
745 v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir,
746 struct dentry *dentry)
750 struct dentry *dir_dentry;
751 struct p9_fid *dfid, *oldfid;
752 struct v9fs_session_info *v9ses;
754 P9_DPRINTK(P9_DEBUG_VFS, "dir ino: %lu, old_name: %s, new_name: %s\n",
755 dir->i_ino, old_dentry->d_name.name,
756 dentry->d_name.name);
758 v9ses = v9fs_inode2v9ses(dir);
759 dir_dentry = v9fs_dentry_from_dir_inode(dir);
760 dfid = v9fs_fid_lookup(dir_dentry);
762 return PTR_ERR(dfid);
764 oldfid = v9fs_fid_lookup(old_dentry);
766 return PTR_ERR(oldfid);
768 name = (char *) dentry->d_name.name;
770 err = p9_client_link(dfid, oldfid, (char *)dentry->d_name.name);
773 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_link failed %d\n", err);
777 v9fs_invalidate_inode_attr(dir);
778 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
779 /* Get the latest stat info from server. */
781 fid = v9fs_fid_lookup(old_dentry);
785 v9fs_refresh_inode_dotl(fid, old_dentry->d_inode);
787 ihold(old_dentry->d_inode);
788 d_instantiate(dentry, old_dentry->d_inode);
794 * v9fs_vfs_mknod_dotl - create a special file
795 * @dir: inode destination for new link
796 * @dentry: dentry for file
797 * @mode: mode for creation
798 * @rdev: device associated with special file
802 v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode,
809 struct v9fs_session_info *v9ses;
810 struct p9_fid *fid = NULL, *dfid = NULL;
813 struct dentry *dir_dentry;
814 struct posix_acl *dacl = NULL, *pacl = NULL;
816 P9_DPRINTK(P9_DEBUG_VFS,
817 " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino,
818 dentry->d_name.name, omode, MAJOR(rdev), MINOR(rdev));
820 if (!new_valid_dev(rdev))
823 v9ses = v9fs_inode2v9ses(dir);
824 dir_dentry = v9fs_dentry_from_dir_inode(dir);
825 dfid = v9fs_fid_lookup(dir_dentry);
828 P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
833 gid = v9fs_get_fsgid_for_create(dir);
835 /* Update mode based on ACL value */
836 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
838 P9_DPRINTK(P9_DEBUG_VFS,
839 "Failed to get acl values in mknod %d\n", err);
842 name = (char *) dentry->d_name.name;
844 err = p9_client_mknod_dotl(dfid, name, mode, rdev, gid, &qid);
848 v9fs_invalidate_inode_attr(dir);
849 /* instantiate inode and assign the unopened fid to the dentry */
850 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
851 fid = p9_client_walk(dfid, 1, &name, 1);
854 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
860 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
862 err = PTR_ERR(inode);
863 P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n",
867 err = v9fs_fid_add(dentry, fid);
870 d_instantiate(dentry, inode);
874 * Not in cached mode. No need to populate inode with stat.
875 * socket syscall returns a fd, so we need instantiate
877 inode = v9fs_get_inode(dir->i_sb, mode, rdev);
879 err = PTR_ERR(inode);
882 d_instantiate(dentry, inode);
884 /* Now set the ACL based on the default value */
885 v9fs_set_create_acl(dentry, &dacl, &pacl);
888 p9_client_clunk(fid);
889 v9fs_set_create_acl(NULL, &dacl, &pacl);
894 * v9fs_vfs_follow_link_dotl - follow a symlink path
895 * @dentry: dentry for symlink
901 v9fs_vfs_follow_link_dotl(struct dentry *dentry, struct nameidata *nd)
905 char *link = __getname();
908 P9_DPRINTK(P9_DEBUG_VFS, "%s\n", dentry->d_name.name);
911 link = ERR_PTR(-ENOMEM);
914 fid = v9fs_fid_lookup(dentry);
917 link = ERR_CAST(fid);
920 retval = p9_client_readlink(fid, &target);
922 strcpy(link, target);
927 link = ERR_PTR(retval);
929 nd_set_link(nd, link);
933 int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode)
936 struct p9_stat_dotl *st;
937 struct v9fs_session_info *v9ses;
939 v9ses = v9fs_inode2v9ses(inode);
940 st = p9_client_getattr_dotl(fid, P9_STATS_ALL);
944 * Don't update inode if the file type is different
946 if ((inode->i_mode & S_IFMT) != (st->st_mode & S_IFMT))
949 spin_lock(&inode->i_lock);
951 * We don't want to refresh inode->i_size,
952 * because we may have cached data
954 i_size = inode->i_size;
955 v9fs_stat2inode_dotl(st, inode);
957 inode->i_size = i_size;
958 spin_unlock(&inode->i_lock);
964 const struct inode_operations v9fs_dir_inode_operations_dotl = {
965 .create = v9fs_vfs_create_dotl,
966 .lookup = v9fs_vfs_lookup,
967 .link = v9fs_vfs_link_dotl,
968 .symlink = v9fs_vfs_symlink_dotl,
969 .unlink = v9fs_vfs_unlink,
970 .mkdir = v9fs_vfs_mkdir_dotl,
971 .rmdir = v9fs_vfs_rmdir,
972 .mknod = v9fs_vfs_mknod_dotl,
973 .rename = v9fs_vfs_rename,
974 .getattr = v9fs_vfs_getattr_dotl,
975 .setattr = v9fs_vfs_setattr_dotl,
976 .setxattr = generic_setxattr,
977 .getxattr = generic_getxattr,
978 .removexattr = generic_removexattr,
979 .listxattr = v9fs_listxattr,
980 .get_acl = v9fs_iop_get_acl,
983 const struct inode_operations v9fs_file_inode_operations_dotl = {
984 .getattr = v9fs_vfs_getattr_dotl,
985 .setattr = v9fs_vfs_setattr_dotl,
986 .setxattr = generic_setxattr,
987 .getxattr = generic_getxattr,
988 .removexattr = generic_removexattr,
989 .listxattr = v9fs_listxattr,
990 .get_acl = v9fs_iop_get_acl,
993 const struct inode_operations v9fs_symlink_inode_operations_dotl = {
994 .readlink = generic_readlink,
995 .follow_link = v9fs_vfs_follow_link_dotl,
996 .put_link = v9fs_vfs_put_link,
997 .getattr = v9fs_vfs_getattr_dotl,
998 .setattr = v9fs_vfs_setattr_dotl,
999 .setxattr = generic_setxattr,
1000 .getxattr = generic_getxattr,
1001 .removexattr = generic_removexattr,
1002 .listxattr = v9fs_listxattr,