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_u.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);
173 return ERR_PTR(retval);
178 v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid,
179 struct super_block *sb, int new)
181 struct p9_stat_dotl *st;
182 struct inode *inode = NULL;
184 st = p9_client_getattr_dotl(fid, P9_STATS_BASIC | P9_STATS_GEN);
188 inode = v9fs_qid_iget_dotl(sb, &st->qid, fid, st, new);
193 struct dotl_openflag_map {
198 static int v9fs_mapped_dotl_flags(int flags)
202 struct dotl_openflag_map dotl_oflag_map[] = {
203 { O_CREAT, P9_DOTL_CREATE },
204 { O_EXCL, P9_DOTL_EXCL },
205 { O_NOCTTY, P9_DOTL_NOCTTY },
206 { O_TRUNC, P9_DOTL_TRUNC },
207 { O_APPEND, P9_DOTL_APPEND },
208 { O_NONBLOCK, P9_DOTL_NONBLOCK },
209 { O_DSYNC, P9_DOTL_DSYNC },
210 { FASYNC, P9_DOTL_FASYNC },
211 { O_DIRECT, P9_DOTL_DIRECT },
212 { O_LARGEFILE, P9_DOTL_LARGEFILE },
213 { O_DIRECTORY, P9_DOTL_DIRECTORY },
214 { O_NOFOLLOW, P9_DOTL_NOFOLLOW },
215 { O_NOATIME, P9_DOTL_NOATIME },
216 { O_CLOEXEC, P9_DOTL_CLOEXEC },
217 { O_SYNC, P9_DOTL_SYNC},
219 for (i = 0; i < ARRAY_SIZE(dotl_oflag_map); i++) {
220 if (flags & dotl_oflag_map[i].open_flag)
221 rflags |= dotl_oflag_map[i].dotl_flag;
227 * v9fs_open_to_dotl_flags- convert Linux specific open flags to
229 * @flags: flags to convert
231 int v9fs_open_to_dotl_flags(int flags)
236 * We have same bits for P9_DOTL_READONLY, P9_DOTL_WRONLY
237 * and P9_DOTL_NOACCESS
239 rflags |= flags & O_ACCMODE;
240 rflags |= v9fs_mapped_dotl_flags(flags);
246 * v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol.
247 * @dir: directory inode that is being created
248 * @dentry: dentry that is being deleted
249 * @mode: create permissions
250 * @nd: path information
255 v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
256 struct nameidata *nd)
266 struct p9_fid *fid = NULL;
267 struct v9fs_inode *v9inode;
268 struct p9_fid *dfid, *ofid, *inode_fid;
269 struct v9fs_session_info *v9ses;
270 struct posix_acl *pacl = NULL, *dacl = NULL;
272 v9ses = v9fs_inode2v9ses(dir);
274 flags = nd->intent.open.flags;
277 * create call without LOOKUP_OPEN is due
278 * to mknod of regular files. So use mknod
281 return v9fs_vfs_mknod_dotl(dir, dentry, omode, 0);
284 name = (char *) dentry->d_name.name;
285 P9_DPRINTK(P9_DEBUG_VFS, "v9fs_vfs_create_dotl: name:%s flags:0x%x "
286 "mode:0x%x\n", name, flags, omode);
288 dfid = v9fs_fid_lookup(dentry->d_parent);
291 P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
295 /* clone a fid to use for creation */
296 ofid = p9_client_walk(dfid, 0, NULL, 1);
299 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
303 gid = v9fs_get_fsgid_for_create(dir);
306 /* Update mode based on ACL value */
307 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
309 P9_DPRINTK(P9_DEBUG_VFS,
310 "Failed to get acl values in creat %d\n", err);
313 err = p9_client_create_dotl(ofid, name, v9fs_open_to_dotl_flags(flags),
316 P9_DPRINTK(P9_DEBUG_VFS,
317 "p9_client_open_dotl failed in creat %d\n",
321 v9fs_invalidate_inode_attr(dir);
323 /* instantiate inode and assign the unopened fid to the dentry */
324 fid = p9_client_walk(dfid, 1, &name, 1);
327 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
331 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
333 err = PTR_ERR(inode);
334 P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err);
337 err = v9fs_fid_add(dentry, fid);
340 d_instantiate(dentry, inode);
342 /* Now set the ACL based on the default value */
343 v9fs_set_create_acl(dentry, &dacl, &pacl);
345 v9inode = V9FS_I(inode);
346 mutex_lock(&v9inode->v_mutex);
347 if (v9ses->cache && !v9inode->writeback_fid &&
348 ((flags & O_ACCMODE) != O_RDONLY)) {
350 * clone a fid and add it to writeback_fid
351 * we do it during open time instead of
352 * page dirty time via write_begin/page_mkwrite
353 * because we want write after unlink usecase
356 inode_fid = v9fs_writeback_fid(dentry);
357 if (IS_ERR(inode_fid)) {
358 err = PTR_ERR(inode_fid);
359 mutex_unlock(&v9inode->v_mutex);
360 goto err_clunk_old_fid;
362 v9inode->writeback_fid = (void *) inode_fid;
364 mutex_unlock(&v9inode->v_mutex);
365 /* Since we are opening a file, assign the open fid to the file */
366 filp = lookup_instantiate_filp(nd, dentry, generic_file_open);
369 goto err_clunk_old_fid;
371 filp->private_data = ofid;
372 #ifdef CONFIG_9P_FSCACHE
374 v9fs_cache_inode_set_cookie(inode, filp);
380 p9_client_clunk(fid);
383 p9_client_clunk(ofid);
384 v9fs_set_create_acl(NULL, &dacl, &pacl);
389 * v9fs_vfs_mkdir_dotl - VFS mkdir hook to create a directory
390 * @dir: inode that is being unlinked
391 * @dentry: dentry that is being unlinked
392 * @mode: mode for new directory
396 static int v9fs_vfs_mkdir_dotl(struct inode *dir,
397 struct dentry *dentry, int omode)
400 struct v9fs_session_info *v9ses;
401 struct p9_fid *fid = NULL, *dfid = NULL;
407 struct dentry *dir_dentry;
408 struct posix_acl *dacl = NULL, *pacl = NULL;
410 P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name);
412 v9ses = v9fs_inode2v9ses(dir);
415 if (dir->i_mode & S_ISGID)
418 dir_dentry = v9fs_dentry_from_dir_inode(dir);
419 dfid = v9fs_fid_lookup(dir_dentry);
422 P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
427 gid = v9fs_get_fsgid_for_create(dir);
429 /* Update mode based on ACL value */
430 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
432 P9_DPRINTK(P9_DEBUG_VFS,
433 "Failed to get acl values in mkdir %d\n", err);
436 name = (char *) dentry->d_name.name;
437 err = p9_client_mkdir_dotl(dfid, name, mode, gid, &qid);
441 /* instantiate inode and assign the unopened fid to the dentry */
442 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
443 fid = p9_client_walk(dfid, 1, &name, 1);
446 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
452 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
454 err = PTR_ERR(inode);
455 P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n",
459 err = v9fs_fid_add(dentry, fid);
462 d_instantiate(dentry, inode);
466 * Not in cached mode. No need to populate
467 * inode with stat. We need to get an inode
468 * so that we can set the acl with dentry
470 inode = v9fs_get_inode(dir->i_sb, mode, 0);
472 err = PTR_ERR(inode);
475 d_instantiate(dentry, inode);
477 /* Now set the ACL based on the default value */
478 v9fs_set_create_acl(dentry, &dacl, &pacl);
480 v9fs_invalidate_inode_attr(dir);
483 p9_client_clunk(fid);
484 v9fs_set_create_acl(NULL, &dacl, &pacl);
489 v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry,
493 struct v9fs_session_info *v9ses;
495 struct p9_stat_dotl *st;
497 P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry);
499 v9ses = v9fs_dentry2v9ses(dentry);
500 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
501 generic_fillattr(dentry->d_inode, stat);
504 fid = v9fs_fid_lookup(dentry);
508 /* Ask for all the fields in stat structure. Server will return
509 * whatever it supports
512 st = p9_client_getattr_dotl(fid, P9_STATS_ALL);
516 v9fs_stat2inode_dotl(st, dentry->d_inode);
517 generic_fillattr(dentry->d_inode, stat);
518 /* Change block size to what the server returned */
519 stat->blksize = st->st_blksize;
526 * v9fs_vfs_setattr_dotl - set file metadata
527 * @dentry: file whose metadata to set
528 * @iattr: metadata assignment structure
532 int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
535 struct v9fs_session_info *v9ses;
537 struct p9_iattr_dotl p9attr;
539 P9_DPRINTK(P9_DEBUG_VFS, "\n");
541 retval = inode_change_ok(dentry->d_inode, iattr);
545 p9attr.valid = iattr->ia_valid;
546 p9attr.mode = iattr->ia_mode;
547 p9attr.uid = iattr->ia_uid;
548 p9attr.gid = iattr->ia_gid;
549 p9attr.size = iattr->ia_size;
550 p9attr.atime_sec = iattr->ia_atime.tv_sec;
551 p9attr.atime_nsec = iattr->ia_atime.tv_nsec;
552 p9attr.mtime_sec = iattr->ia_mtime.tv_sec;
553 p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec;
556 v9ses = v9fs_dentry2v9ses(dentry);
557 fid = v9fs_fid_lookup(dentry);
561 /* Write all dirty data */
562 if (S_ISREG(dentry->d_inode->i_mode))
563 filemap_write_and_wait(dentry->d_inode->i_mapping);
565 retval = p9_client_setattr(fid, &p9attr);
569 if ((iattr->ia_valid & ATTR_SIZE) &&
570 iattr->ia_size != i_size_read(dentry->d_inode))
571 truncate_setsize(dentry->d_inode, iattr->ia_size);
573 v9fs_invalidate_inode_attr(dentry->d_inode);
574 setattr_copy(dentry->d_inode, iattr);
575 mark_inode_dirty(dentry->d_inode);
576 if (iattr->ia_valid & ATTR_MODE) {
577 /* We also want to update ACL when we update mode bits */
578 retval = v9fs_acl_chmod(dentry);
586 * v9fs_stat2inode_dotl - populate an inode structure with stat info
587 * @stat: stat structure
588 * @inode: inode to populate
589 * @sb: superblock of filesystem
594 v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode)
597 struct v9fs_inode *v9inode = V9FS_I(inode);
599 if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) {
600 inode->i_atime.tv_sec = stat->st_atime_sec;
601 inode->i_atime.tv_nsec = stat->st_atime_nsec;
602 inode->i_mtime.tv_sec = stat->st_mtime_sec;
603 inode->i_mtime.tv_nsec = stat->st_mtime_nsec;
604 inode->i_ctime.tv_sec = stat->st_ctime_sec;
605 inode->i_ctime.tv_nsec = stat->st_ctime_nsec;
606 inode->i_uid = stat->st_uid;
607 inode->i_gid = stat->st_gid;
608 set_nlink(inode, stat->st_nlink);
610 mode = stat->st_mode & S_IALLUGO;
611 mode |= inode->i_mode & ~S_IALLUGO;
612 inode->i_mode = mode;
614 i_size_write(inode, stat->st_size);
615 inode->i_blocks = stat->st_blocks;
617 if (stat->st_result_mask & P9_STATS_ATIME) {
618 inode->i_atime.tv_sec = stat->st_atime_sec;
619 inode->i_atime.tv_nsec = stat->st_atime_nsec;
621 if (stat->st_result_mask & P9_STATS_MTIME) {
622 inode->i_mtime.tv_sec = stat->st_mtime_sec;
623 inode->i_mtime.tv_nsec = stat->st_mtime_nsec;
625 if (stat->st_result_mask & P9_STATS_CTIME) {
626 inode->i_ctime.tv_sec = stat->st_ctime_sec;
627 inode->i_ctime.tv_nsec = stat->st_ctime_nsec;
629 if (stat->st_result_mask & P9_STATS_UID)
630 inode->i_uid = stat->st_uid;
631 if (stat->st_result_mask & P9_STATS_GID)
632 inode->i_gid = stat->st_gid;
633 if (stat->st_result_mask & P9_STATS_NLINK)
634 set_nlink(inode, stat->st_nlink);
635 if (stat->st_result_mask & P9_STATS_MODE) {
636 inode->i_mode = stat->st_mode;
637 if ((S_ISBLK(inode->i_mode)) ||
638 (S_ISCHR(inode->i_mode)))
639 init_special_inode(inode, inode->i_mode,
642 if (stat->st_result_mask & P9_STATS_RDEV)
643 inode->i_rdev = new_decode_dev(stat->st_rdev);
644 if (stat->st_result_mask & P9_STATS_SIZE)
645 i_size_write(inode, stat->st_size);
646 if (stat->st_result_mask & P9_STATS_BLOCKS)
647 inode->i_blocks = stat->st_blocks;
649 if (stat->st_result_mask & P9_STATS_GEN)
650 inode->i_generation = stat->st_gen;
652 /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION
653 * because the inode structure does not have fields for them.
655 v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR;
659 v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry,
668 struct p9_fid *fid = NULL;
669 struct v9fs_session_info *v9ses;
671 name = (char *) dentry->d_name.name;
672 P9_DPRINTK(P9_DEBUG_VFS, "v9fs_vfs_symlink_dotl : %lu,%s,%s\n",
673 dir->i_ino, name, symname);
674 v9ses = v9fs_inode2v9ses(dir);
676 dfid = v9fs_fid_lookup(dentry->d_parent);
679 P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
683 gid = v9fs_get_fsgid_for_create(dir);
685 /* Server doesn't alter fid on TSYMLINK. Hence no need to clone it. */
686 err = p9_client_symlink(dfid, name, (char *)symname, gid, &qid);
689 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_symlink failed %d\n", err);
693 v9fs_invalidate_inode_attr(dir);
695 /* Now walk from the parent so we can get an unopened fid. */
696 fid = p9_client_walk(dfid, 1, &name, 1);
699 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
705 /* instantiate inode and assign the unopened fid to dentry */
706 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
708 err = PTR_ERR(inode);
709 P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n",
713 err = v9fs_fid_add(dentry, fid);
716 d_instantiate(dentry, inode);
719 /* Not in cached mode. No need to populate inode with stat */
720 inode = v9fs_get_inode(dir->i_sb, S_IFLNK, 0);
722 err = PTR_ERR(inode);
725 d_instantiate(dentry, inode);
730 p9_client_clunk(fid);
736 * v9fs_vfs_link_dotl - create a hardlink for dotl
737 * @old_dentry: dentry for file to link to
738 * @dir: inode destination for new link
739 * @dentry: dentry for link
744 v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir,
745 struct dentry *dentry)
749 struct dentry *dir_dentry;
750 struct p9_fid *dfid, *oldfid;
751 struct v9fs_session_info *v9ses;
753 P9_DPRINTK(P9_DEBUG_VFS, "dir ino: %lu, old_name: %s, new_name: %s\n",
754 dir->i_ino, old_dentry->d_name.name,
755 dentry->d_name.name);
757 v9ses = v9fs_inode2v9ses(dir);
758 dir_dentry = v9fs_dentry_from_dir_inode(dir);
759 dfid = v9fs_fid_lookup(dir_dentry);
761 return PTR_ERR(dfid);
763 oldfid = v9fs_fid_lookup(old_dentry);
765 return PTR_ERR(oldfid);
767 name = (char *) dentry->d_name.name;
769 err = p9_client_link(dfid, oldfid, (char *)dentry->d_name.name);
772 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_link failed %d\n", err);
776 v9fs_invalidate_inode_attr(dir);
777 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
778 /* Get the latest stat info from server. */
780 fid = v9fs_fid_lookup(old_dentry);
784 v9fs_refresh_inode_dotl(fid, old_dentry->d_inode);
786 ihold(old_dentry->d_inode);
787 d_instantiate(dentry, old_dentry->d_inode);
793 * v9fs_vfs_mknod_dotl - create a special file
794 * @dir: inode destination for new link
795 * @dentry: dentry for file
796 * @mode: mode for creation
797 * @rdev: device associated with special file
801 v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode,
808 struct v9fs_session_info *v9ses;
809 struct p9_fid *fid = NULL, *dfid = NULL;
812 struct dentry *dir_dentry;
813 struct posix_acl *dacl = NULL, *pacl = NULL;
815 P9_DPRINTK(P9_DEBUG_VFS,
816 " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino,
817 dentry->d_name.name, omode, MAJOR(rdev), MINOR(rdev));
819 if (!new_valid_dev(rdev))
822 v9ses = v9fs_inode2v9ses(dir);
823 dir_dentry = v9fs_dentry_from_dir_inode(dir);
824 dfid = v9fs_fid_lookup(dir_dentry);
827 P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
832 gid = v9fs_get_fsgid_for_create(dir);
834 /* Update mode based on ACL value */
835 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
837 P9_DPRINTK(P9_DEBUG_VFS,
838 "Failed to get acl values in mknod %d\n", err);
841 name = (char *) dentry->d_name.name;
843 err = p9_client_mknod_dotl(dfid, name, mode, rdev, gid, &qid);
847 v9fs_invalidate_inode_attr(dir);
848 /* instantiate inode and assign the unopened fid to the dentry */
849 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
850 fid = p9_client_walk(dfid, 1, &name, 1);
853 P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
859 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
861 err = PTR_ERR(inode);
862 P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n",
866 err = v9fs_fid_add(dentry, fid);
869 d_instantiate(dentry, inode);
873 * Not in cached mode. No need to populate inode with stat.
874 * socket syscall returns a fd, so we need instantiate
876 inode = v9fs_get_inode(dir->i_sb, mode, rdev);
878 err = PTR_ERR(inode);
881 d_instantiate(dentry, inode);
883 /* Now set the ACL based on the default value */
884 v9fs_set_create_acl(dentry, &dacl, &pacl);
887 p9_client_clunk(fid);
888 v9fs_set_create_acl(NULL, &dacl, &pacl);
893 * v9fs_vfs_follow_link_dotl - follow a symlink path
894 * @dentry: dentry for symlink
900 v9fs_vfs_follow_link_dotl(struct dentry *dentry, struct nameidata *nd)
904 char *link = __getname();
907 P9_DPRINTK(P9_DEBUG_VFS, "%s\n", dentry->d_name.name);
910 link = ERR_PTR(-ENOMEM);
913 fid = v9fs_fid_lookup(dentry);
916 link = ERR_CAST(fid);
919 retval = p9_client_readlink(fid, &target);
921 strcpy(link, target);
926 link = ERR_PTR(retval);
928 nd_set_link(nd, link);
932 int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode)
935 struct p9_stat_dotl *st;
936 struct v9fs_session_info *v9ses;
938 v9ses = v9fs_inode2v9ses(inode);
939 st = p9_client_getattr_dotl(fid, P9_STATS_ALL);
943 * Don't update inode if the file type is different
945 if ((inode->i_mode & S_IFMT) != (st->st_mode & S_IFMT))
948 spin_lock(&inode->i_lock);
950 * We don't want to refresh inode->i_size,
951 * because we may have cached data
953 i_size = inode->i_size;
954 v9fs_stat2inode_dotl(st, inode);
956 inode->i_size = i_size;
957 spin_unlock(&inode->i_lock);
963 const struct inode_operations v9fs_dir_inode_operations_dotl = {
964 .create = v9fs_vfs_create_dotl,
965 .lookup = v9fs_vfs_lookup,
966 .link = v9fs_vfs_link_dotl,
967 .symlink = v9fs_vfs_symlink_dotl,
968 .unlink = v9fs_vfs_unlink,
969 .mkdir = v9fs_vfs_mkdir_dotl,
970 .rmdir = v9fs_vfs_rmdir,
971 .mknod = v9fs_vfs_mknod_dotl,
972 .rename = v9fs_vfs_rename,
973 .getattr = v9fs_vfs_getattr_dotl,
974 .setattr = v9fs_vfs_setattr_dotl,
975 .setxattr = generic_setxattr,
976 .getxattr = generic_getxattr,
977 .removexattr = generic_removexattr,
978 .listxattr = v9fs_listxattr,
979 .get_acl = v9fs_iop_get_acl,
982 const struct inode_operations v9fs_file_inode_operations_dotl = {
983 .getattr = v9fs_vfs_getattr_dotl,
984 .setattr = v9fs_vfs_setattr_dotl,
985 .setxattr = generic_setxattr,
986 .getxattr = generic_getxattr,
987 .removexattr = generic_removexattr,
988 .listxattr = v9fs_listxattr,
989 .get_acl = v9fs_iop_get_acl,
992 const struct inode_operations v9fs_symlink_inode_operations_dotl = {
993 .readlink = generic_readlink,
994 .follow_link = v9fs_vfs_follow_link_dotl,
995 .put_link = v9fs_vfs_put_link,
996 .getattr = v9fs_vfs_getattr_dotl,
997 .setattr = v9fs_vfs_setattr_dotl,
998 .setxattr = generic_setxattr,
999 .getxattr = generic_getxattr,
1000 .removexattr = generic_removexattr,
1001 .listxattr = v9fs_listxattr,