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 #ifdef CONFIG_9P_FSCACHE
145 v9fs_cache_inode_get_cookie(inode);
147 retval = v9fs_get_acl(inode, fid);
151 unlock_new_inode(inode);
154 unlock_new_inode(inode);
156 return ERR_PTR(retval);
161 v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid,
162 struct super_block *sb, int new)
164 struct p9_stat_dotl *st;
165 struct inode *inode = NULL;
167 st = p9_client_getattr_dotl(fid, P9_STATS_BASIC | P9_STATS_GEN);
171 inode = v9fs_qid_iget_dotl(sb, &st->qid, fid, st, new);
176 struct dotl_openflag_map {
181 static int v9fs_mapped_dotl_flags(int flags)
185 struct dotl_openflag_map dotl_oflag_map[] = {
186 { O_CREAT, P9_DOTL_CREATE },
187 { O_EXCL, P9_DOTL_EXCL },
188 { O_NOCTTY, P9_DOTL_NOCTTY },
189 { O_APPEND, P9_DOTL_APPEND },
190 { O_NONBLOCK, P9_DOTL_NONBLOCK },
191 { O_DSYNC, P9_DOTL_DSYNC },
192 { FASYNC, P9_DOTL_FASYNC },
193 { O_DIRECT, P9_DOTL_DIRECT },
194 { O_LARGEFILE, P9_DOTL_LARGEFILE },
195 { O_DIRECTORY, P9_DOTL_DIRECTORY },
196 { O_NOFOLLOW, P9_DOTL_NOFOLLOW },
197 { O_NOATIME, P9_DOTL_NOATIME },
198 { O_CLOEXEC, P9_DOTL_CLOEXEC },
199 { O_SYNC, P9_DOTL_SYNC},
201 for (i = 0; i < ARRAY_SIZE(dotl_oflag_map); i++) {
202 if (flags & dotl_oflag_map[i].open_flag)
203 rflags |= dotl_oflag_map[i].dotl_flag;
209 * v9fs_open_to_dotl_flags- convert Linux specific open flags to
211 * @flags: flags to convert
213 int v9fs_open_to_dotl_flags(int flags)
218 * We have same bits for P9_DOTL_READONLY, P9_DOTL_WRONLY
219 * and P9_DOTL_NOACCESS
221 rflags |= flags & O_ACCMODE;
222 rflags |= v9fs_mapped_dotl_flags(flags);
228 * v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol.
229 * @dir: directory inode that is being created
230 * @dentry: dentry that is being deleted
231 * @mode: create permissions
236 v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
239 return v9fs_vfs_mknod_dotl(dir, dentry, omode, 0);
243 v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
244 struct file *file, unsigned flags, umode_t omode,
253 struct p9_fid *fid = NULL;
254 struct v9fs_inode *v9inode;
255 struct p9_fid *dfid, *ofid, *inode_fid;
256 struct v9fs_session_info *v9ses;
257 struct posix_acl *pacl = NULL, *dacl = NULL;
258 struct dentry *res = NULL;
260 if (d_unhashed(dentry)) {
261 res = v9fs_vfs_lookup(dir, dentry, 0);
270 if (!(flags & O_CREAT) || dentry->d_inode)
271 return finish_no_open(file, res);
273 v9ses = v9fs_inode2v9ses(dir);
275 name = (char *) dentry->d_name.name;
276 p9_debug(P9_DEBUG_VFS, "name:%s flags:0x%x mode:0x%hx\n",
279 dfid = v9fs_fid_lookup(dentry->d_parent);
282 p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
286 /* clone a fid to use for creation */
287 ofid = p9_client_walk(dfid, 0, NULL, 1);
290 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
294 gid = v9fs_get_fsgid_for_create(dir);
297 /* Update mode based on ACL value */
298 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
300 p9_debug(P9_DEBUG_VFS, "Failed to get acl values in creat %d\n",
304 err = p9_client_create_dotl(ofid, name, v9fs_open_to_dotl_flags(flags),
307 p9_debug(P9_DEBUG_VFS, "p9_client_open_dotl failed in creat %d\n",
311 v9fs_invalidate_inode_attr(dir);
313 /* instantiate inode and assign the unopened fid to the dentry */
314 fid = p9_client_walk(dfid, 1, &name, 1);
317 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
321 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
323 err = PTR_ERR(inode);
324 p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n", err);
327 /* Now set the ACL based on the default value */
328 v9fs_set_create_acl(inode, fid, dacl, pacl);
330 v9fs_fid_add(dentry, fid);
331 d_instantiate(dentry, inode);
333 v9inode = V9FS_I(inode);
334 mutex_lock(&v9inode->v_mutex);
335 if (v9ses->cache && !v9inode->writeback_fid &&
336 ((flags & O_ACCMODE) != O_RDONLY)) {
338 * clone a fid and add it to writeback_fid
339 * we do it during open time instead of
340 * page dirty time via write_begin/page_mkwrite
341 * because we want write after unlink usecase
344 inode_fid = v9fs_writeback_fid(dentry);
345 if (IS_ERR(inode_fid)) {
346 err = PTR_ERR(inode_fid);
347 mutex_unlock(&v9inode->v_mutex);
348 goto err_clunk_old_fid;
350 v9inode->writeback_fid = (void *) inode_fid;
352 mutex_unlock(&v9inode->v_mutex);
353 /* Since we are opening a file, assign the open fid to the file */
354 err = finish_open(file, dentry, generic_file_open, opened);
356 goto err_clunk_old_fid;
357 file->private_data = ofid;
358 #ifdef CONFIG_9P_FSCACHE
360 v9fs_cache_inode_set_cookie(inode, file);
362 *opened |= FILE_CREATED;
364 v9fs_put_acl(dacl, pacl);
370 p9_client_clunk(fid);
373 p9_client_clunk(ofid);
378 * v9fs_vfs_mkdir_dotl - VFS mkdir hook to create a directory
379 * @dir: inode that is being unlinked
380 * @dentry: dentry that is being unlinked
381 * @mode: mode for new directory
385 static int v9fs_vfs_mkdir_dotl(struct inode *dir,
386 struct dentry *dentry, umode_t omode)
389 struct v9fs_session_info *v9ses;
390 struct p9_fid *fid = NULL, *dfid = NULL;
396 struct dentry *dir_dentry;
397 struct posix_acl *dacl = NULL, *pacl = NULL;
399 p9_debug(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name);
401 v9ses = v9fs_inode2v9ses(dir);
404 if (dir->i_mode & S_ISGID)
407 dir_dentry = dentry->d_parent;
408 dfid = v9fs_fid_lookup(dir_dentry);
411 p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
416 gid = v9fs_get_fsgid_for_create(dir);
418 /* Update mode based on ACL value */
419 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
421 p9_debug(P9_DEBUG_VFS, "Failed to get acl values in mkdir %d\n",
425 name = (char *) dentry->d_name.name;
426 err = p9_client_mkdir_dotl(dfid, name, mode, gid, &qid);
430 fid = p9_client_walk(dfid, 1, &name, 1);
433 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
439 /* instantiate inode and assign the unopened fid to the dentry */
440 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
441 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
443 err = PTR_ERR(inode);
444 p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n",
448 v9fs_fid_add(dentry, fid);
449 v9fs_set_create_acl(inode, fid, dacl, pacl);
450 d_instantiate(dentry, inode);
455 * Not in cached mode. No need to populate
456 * inode with stat. We need to get an inode
457 * so that we can set the acl with dentry
459 inode = v9fs_get_inode(dir->i_sb, mode, 0);
461 err = PTR_ERR(inode);
464 v9fs_set_create_acl(inode, fid, dacl, pacl);
465 d_instantiate(dentry, inode);
468 v9fs_invalidate_inode_attr(dir);
471 p9_client_clunk(fid);
472 v9fs_put_acl(dacl, pacl);
477 v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry,
480 struct v9fs_session_info *v9ses;
482 struct p9_stat_dotl *st;
484 p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry);
485 v9ses = v9fs_dentry2v9ses(dentry);
486 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
487 generic_fillattr(dentry->d_inode, stat);
490 fid = v9fs_fid_lookup(dentry);
494 /* Ask for all the fields in stat structure. Server will return
495 * whatever it supports
498 st = p9_client_getattr_dotl(fid, P9_STATS_ALL);
502 v9fs_stat2inode_dotl(st, dentry->d_inode);
503 generic_fillattr(dentry->d_inode, stat);
504 /* Change block size to what the server returned */
505 stat->blksize = st->st_blksize;
514 #define P9_ATTR_MODE (1 << 0)
515 #define P9_ATTR_UID (1 << 1)
516 #define P9_ATTR_GID (1 << 2)
517 #define P9_ATTR_SIZE (1 << 3)
518 #define P9_ATTR_ATIME (1 << 4)
519 #define P9_ATTR_MTIME (1 << 5)
520 #define P9_ATTR_CTIME (1 << 6)
521 #define P9_ATTR_ATIME_SET (1 << 7)
522 #define P9_ATTR_MTIME_SET (1 << 8)
524 struct dotl_iattr_map {
529 static int v9fs_mapped_iattr_valid(int iattr_valid)
532 int p9_iattr_valid = 0;
533 struct dotl_iattr_map dotl_iattr_map[] = {
534 { ATTR_MODE, P9_ATTR_MODE },
535 { ATTR_UID, P9_ATTR_UID },
536 { ATTR_GID, P9_ATTR_GID },
537 { ATTR_SIZE, P9_ATTR_SIZE },
538 { ATTR_ATIME, P9_ATTR_ATIME },
539 { ATTR_MTIME, P9_ATTR_MTIME },
540 { ATTR_CTIME, P9_ATTR_CTIME },
541 { ATTR_ATIME_SET, P9_ATTR_ATIME_SET },
542 { ATTR_MTIME_SET, P9_ATTR_MTIME_SET },
544 for (i = 0; i < ARRAY_SIZE(dotl_iattr_map); i++) {
545 if (iattr_valid & dotl_iattr_map[i].iattr_valid)
546 p9_iattr_valid |= dotl_iattr_map[i].p9_iattr_valid;
548 return p9_iattr_valid;
552 * v9fs_vfs_setattr_dotl - set file metadata
553 * @dentry: file whose metadata to set
554 * @iattr: metadata assignment structure
558 int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
562 struct p9_iattr_dotl p9attr;
563 struct inode *inode = dentry->d_inode;
565 p9_debug(P9_DEBUG_VFS, "\n");
567 retval = inode_change_ok(inode, iattr);
571 p9attr.valid = v9fs_mapped_iattr_valid(iattr->ia_valid);
572 p9attr.mode = iattr->ia_mode;
573 p9attr.uid = iattr->ia_uid;
574 p9attr.gid = iattr->ia_gid;
575 p9attr.size = iattr->ia_size;
576 p9attr.atime_sec = iattr->ia_atime.tv_sec;
577 p9attr.atime_nsec = iattr->ia_atime.tv_nsec;
578 p9attr.mtime_sec = iattr->ia_mtime.tv_sec;
579 p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec;
581 fid = v9fs_fid_lookup(dentry);
585 /* Write all dirty data */
586 if (S_ISREG(inode->i_mode))
587 filemap_write_and_wait(inode->i_mapping);
589 retval = p9_client_setattr(fid, &p9attr);
593 if ((iattr->ia_valid & ATTR_SIZE) &&
594 iattr->ia_size != i_size_read(inode))
595 truncate_setsize(inode, iattr->ia_size);
597 v9fs_invalidate_inode_attr(inode);
598 setattr_copy(inode, iattr);
599 mark_inode_dirty(inode);
600 if (iattr->ia_valid & ATTR_MODE) {
601 /* We also want to update ACL when we update mode bits */
602 retval = v9fs_acl_chmod(inode, fid);
610 * v9fs_stat2inode_dotl - populate an inode structure with stat info
611 * @stat: stat structure
612 * @inode: inode to populate
613 * @sb: superblock of filesystem
618 v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode)
621 struct v9fs_inode *v9inode = V9FS_I(inode);
623 if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) {
624 inode->i_atime.tv_sec = stat->st_atime_sec;
625 inode->i_atime.tv_nsec = stat->st_atime_nsec;
626 inode->i_mtime.tv_sec = stat->st_mtime_sec;
627 inode->i_mtime.tv_nsec = stat->st_mtime_nsec;
628 inode->i_ctime.tv_sec = stat->st_ctime_sec;
629 inode->i_ctime.tv_nsec = stat->st_ctime_nsec;
630 inode->i_uid = stat->st_uid;
631 inode->i_gid = stat->st_gid;
632 set_nlink(inode, stat->st_nlink);
634 mode = stat->st_mode & S_IALLUGO;
635 mode |= inode->i_mode & ~S_IALLUGO;
636 inode->i_mode = mode;
638 i_size_write(inode, stat->st_size);
639 inode->i_blocks = stat->st_blocks;
641 if (stat->st_result_mask & P9_STATS_ATIME) {
642 inode->i_atime.tv_sec = stat->st_atime_sec;
643 inode->i_atime.tv_nsec = stat->st_atime_nsec;
645 if (stat->st_result_mask & P9_STATS_MTIME) {
646 inode->i_mtime.tv_sec = stat->st_mtime_sec;
647 inode->i_mtime.tv_nsec = stat->st_mtime_nsec;
649 if (stat->st_result_mask & P9_STATS_CTIME) {
650 inode->i_ctime.tv_sec = stat->st_ctime_sec;
651 inode->i_ctime.tv_nsec = stat->st_ctime_nsec;
653 if (stat->st_result_mask & P9_STATS_UID)
654 inode->i_uid = stat->st_uid;
655 if (stat->st_result_mask & P9_STATS_GID)
656 inode->i_gid = stat->st_gid;
657 if (stat->st_result_mask & P9_STATS_NLINK)
658 set_nlink(inode, stat->st_nlink);
659 if (stat->st_result_mask & P9_STATS_MODE) {
660 inode->i_mode = stat->st_mode;
661 if ((S_ISBLK(inode->i_mode)) ||
662 (S_ISCHR(inode->i_mode)))
663 init_special_inode(inode, inode->i_mode,
666 if (stat->st_result_mask & P9_STATS_RDEV)
667 inode->i_rdev = new_decode_dev(stat->st_rdev);
668 if (stat->st_result_mask & P9_STATS_SIZE)
669 i_size_write(inode, stat->st_size);
670 if (stat->st_result_mask & P9_STATS_BLOCKS)
671 inode->i_blocks = stat->st_blocks;
673 if (stat->st_result_mask & P9_STATS_GEN)
674 inode->i_generation = stat->st_gen;
676 /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION
677 * because the inode structure does not have fields for them.
679 v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR;
683 v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry,
692 struct p9_fid *fid = NULL;
693 struct v9fs_session_info *v9ses;
695 name = (char *) dentry->d_name.name;
696 p9_debug(P9_DEBUG_VFS, "%lu,%s,%s\n", dir->i_ino, name, symname);
697 v9ses = v9fs_inode2v9ses(dir);
699 dfid = v9fs_fid_lookup(dentry->d_parent);
702 p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
706 gid = v9fs_get_fsgid_for_create(dir);
708 /* Server doesn't alter fid on TSYMLINK. Hence no need to clone it. */
709 err = p9_client_symlink(dfid, name, (char *)symname, gid, &qid);
712 p9_debug(P9_DEBUG_VFS, "p9_client_symlink failed %d\n", err);
716 v9fs_invalidate_inode_attr(dir);
718 /* Now walk from the parent so we can get an unopened fid. */
719 fid = p9_client_walk(dfid, 1, &name, 1);
722 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
728 /* instantiate inode and assign the unopened fid to dentry */
729 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
731 err = PTR_ERR(inode);
732 p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n",
736 v9fs_fid_add(dentry, fid);
737 d_instantiate(dentry, inode);
741 /* Not in cached mode. No need to populate inode with stat */
742 inode = v9fs_get_inode(dir->i_sb, S_IFLNK, 0);
744 err = PTR_ERR(inode);
747 d_instantiate(dentry, inode);
752 p9_client_clunk(fid);
758 * v9fs_vfs_link_dotl - create a hardlink for dotl
759 * @old_dentry: dentry for file to link to
760 * @dir: inode destination for new link
761 * @dentry: dentry for link
766 v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir,
767 struct dentry *dentry)
771 struct dentry *dir_dentry;
772 struct p9_fid *dfid, *oldfid;
773 struct v9fs_session_info *v9ses;
775 p9_debug(P9_DEBUG_VFS, "dir ino: %lu, old_name: %s, new_name: %s\n",
776 dir->i_ino, old_dentry->d_name.name, dentry->d_name.name);
778 v9ses = v9fs_inode2v9ses(dir);
779 dir_dentry = dentry->d_parent;
780 dfid = v9fs_fid_lookup(dir_dentry);
782 return PTR_ERR(dfid);
784 oldfid = v9fs_fid_lookup(old_dentry);
786 return PTR_ERR(oldfid);
788 name = (char *) dentry->d_name.name;
790 err = p9_client_link(dfid, oldfid, (char *)dentry->d_name.name);
793 p9_debug(P9_DEBUG_VFS, "p9_client_link failed %d\n", err);
797 v9fs_invalidate_inode_attr(dir);
798 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
799 /* Get the latest stat info from server. */
801 fid = v9fs_fid_lookup(old_dentry);
805 v9fs_refresh_inode_dotl(fid, old_dentry->d_inode);
807 ihold(old_dentry->d_inode);
808 d_instantiate(dentry, old_dentry->d_inode);
814 * v9fs_vfs_mknod_dotl - create a special file
815 * @dir: inode destination for new link
816 * @dentry: dentry for file
817 * @mode: mode for creation
818 * @rdev: device associated with special file
822 v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
829 struct v9fs_session_info *v9ses;
830 struct p9_fid *fid = NULL, *dfid = NULL;
833 struct dentry *dir_dentry;
834 struct posix_acl *dacl = NULL, *pacl = NULL;
836 p9_debug(P9_DEBUG_VFS, " %lu,%s mode: %hx MAJOR: %u MINOR: %u\n",
837 dir->i_ino, dentry->d_name.name, omode,
838 MAJOR(rdev), MINOR(rdev));
840 if (!new_valid_dev(rdev))
843 v9ses = v9fs_inode2v9ses(dir);
844 dir_dentry = dentry->d_parent;
845 dfid = v9fs_fid_lookup(dir_dentry);
848 p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
853 gid = v9fs_get_fsgid_for_create(dir);
855 /* Update mode based on ACL value */
856 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
858 p9_debug(P9_DEBUG_VFS, "Failed to get acl values in mknod %d\n",
862 name = (char *) dentry->d_name.name;
864 err = p9_client_mknod_dotl(dfid, name, mode, rdev, gid, &qid);
868 v9fs_invalidate_inode_attr(dir);
869 fid = p9_client_walk(dfid, 1, &name, 1);
872 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
878 /* instantiate inode and assign the unopened fid to the dentry */
879 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
880 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
882 err = PTR_ERR(inode);
883 p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n",
887 v9fs_set_create_acl(inode, fid, dacl, pacl);
888 v9fs_fid_add(dentry, fid);
889 d_instantiate(dentry, inode);
894 * Not in cached mode. No need to populate inode with stat.
895 * socket syscall returns a fd, so we need instantiate
897 inode = v9fs_get_inode(dir->i_sb, mode, rdev);
899 err = PTR_ERR(inode);
902 v9fs_set_create_acl(inode, fid, dacl, pacl);
903 d_instantiate(dentry, inode);
907 p9_client_clunk(fid);
908 v9fs_put_acl(dacl, pacl);
913 * v9fs_vfs_follow_link_dotl - follow a symlink path
914 * @dentry: dentry for symlink
920 v9fs_vfs_follow_link_dotl(struct dentry *dentry, struct nameidata *nd)
924 char *link = __getname();
927 p9_debug(P9_DEBUG_VFS, "%s\n", dentry->d_name.name);
930 link = ERR_PTR(-ENOMEM);
933 fid = v9fs_fid_lookup(dentry);
936 link = ERR_CAST(fid);
939 retval = p9_client_readlink(fid, &target);
941 strcpy(link, target);
946 link = ERR_PTR(retval);
948 nd_set_link(nd, link);
952 int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode)
955 struct p9_stat_dotl *st;
956 struct v9fs_session_info *v9ses;
958 v9ses = v9fs_inode2v9ses(inode);
959 st = p9_client_getattr_dotl(fid, P9_STATS_ALL);
963 * Don't update inode if the file type is different
965 if ((inode->i_mode & S_IFMT) != (st->st_mode & S_IFMT))
968 spin_lock(&inode->i_lock);
970 * We don't want to refresh inode->i_size,
971 * because we may have cached data
973 i_size = inode->i_size;
974 v9fs_stat2inode_dotl(st, inode);
976 inode->i_size = i_size;
977 spin_unlock(&inode->i_lock);
983 const struct inode_operations v9fs_dir_inode_operations_dotl = {
984 .create = v9fs_vfs_create_dotl,
985 .atomic_open = v9fs_vfs_atomic_open_dotl,
986 .lookup = v9fs_vfs_lookup,
987 .link = v9fs_vfs_link_dotl,
988 .symlink = v9fs_vfs_symlink_dotl,
989 .unlink = v9fs_vfs_unlink,
990 .mkdir = v9fs_vfs_mkdir_dotl,
991 .rmdir = v9fs_vfs_rmdir,
992 .mknod = v9fs_vfs_mknod_dotl,
993 .rename = v9fs_vfs_rename,
994 .getattr = v9fs_vfs_getattr_dotl,
995 .setattr = v9fs_vfs_setattr_dotl,
996 .setxattr = generic_setxattr,
997 .getxattr = generic_getxattr,
998 .removexattr = generic_removexattr,
999 .listxattr = v9fs_listxattr,
1000 .get_acl = v9fs_iop_get_acl,
1003 const struct inode_operations v9fs_file_inode_operations_dotl = {
1004 .getattr = v9fs_vfs_getattr_dotl,
1005 .setattr = v9fs_vfs_setattr_dotl,
1006 .setxattr = generic_setxattr,
1007 .getxattr = generic_getxattr,
1008 .removexattr = generic_removexattr,
1009 .listxattr = v9fs_listxattr,
1010 .get_acl = v9fs_iop_get_acl,
1013 const struct inode_operations v9fs_symlink_inode_operations_dotl = {
1014 .readlink = generic_readlink,
1015 .follow_link = v9fs_vfs_follow_link_dotl,
1016 .put_link = v9fs_vfs_put_link,
1017 .getattr = v9fs_vfs_getattr_dotl,
1018 .setattr = v9fs_vfs_setattr_dotl,
1019 .setxattr = generic_setxattr,
1020 .getxattr = generic_getxattr,
1021 .removexattr = generic_removexattr,
1022 .listxattr = v9fs_listxattr,