2 * linux/fs/9p/vfs_inode_dotl.c
4 * This file contains vfs inode ops for the 9P2000.L protocol.
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 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();
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_TRUNC, P9_DOTL_TRUNC },
190 { O_APPEND, P9_DOTL_APPEND },
191 { O_NONBLOCK, P9_DOTL_NONBLOCK },
192 { O_DSYNC, P9_DOTL_DSYNC },
193 { FASYNC, P9_DOTL_FASYNC },
194 { O_DIRECT, P9_DOTL_DIRECT },
195 { O_LARGEFILE, P9_DOTL_LARGEFILE },
196 { O_DIRECTORY, P9_DOTL_DIRECTORY },
197 { O_NOFOLLOW, P9_DOTL_NOFOLLOW },
198 { O_NOATIME, P9_DOTL_NOATIME },
199 { O_CLOEXEC, P9_DOTL_CLOEXEC },
200 { O_SYNC, P9_DOTL_SYNC},
202 for (i = 0; i < ARRAY_SIZE(dotl_oflag_map); i++) {
203 if (flags & dotl_oflag_map[i].open_flag)
204 rflags |= dotl_oflag_map[i].dotl_flag;
210 * v9fs_open_to_dotl_flags- convert Linux specific open flags to
212 * @flags: flags to convert
214 int v9fs_open_to_dotl_flags(int flags)
219 * We have same bits for P9_DOTL_READONLY, P9_DOTL_WRONLY
220 * and P9_DOTL_NOACCESS
222 rflags |= flags & O_ACCMODE;
223 rflags |= v9fs_mapped_dotl_flags(flags);
229 * v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol.
230 * @dir: directory inode that is being created
231 * @dentry: dentry that is being deleted
232 * @mode: create permissions
237 v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
240 return v9fs_vfs_mknod_dotl(dir, dentry, omode, 0);
244 v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
245 struct file *file, unsigned flags, umode_t omode,
254 struct p9_fid *fid = NULL;
255 struct v9fs_inode *v9inode;
256 struct p9_fid *dfid, *ofid, *inode_fid;
257 struct v9fs_session_info *v9ses;
258 struct posix_acl *pacl = NULL, *dacl = NULL;
259 struct dentry *res = NULL;
261 if (d_unhashed(dentry)) {
262 res = v9fs_vfs_lookup(dir, dentry, 0);
271 if (!(flags & O_CREAT) || dentry->d_inode)
272 return finish_no_open(file, res);
274 v9ses = v9fs_inode2v9ses(dir);
276 name = (char *) dentry->d_name.name;
277 p9_debug(P9_DEBUG_VFS, "name:%s flags:0x%x mode:0x%hx\n",
280 dfid = v9fs_fid_lookup(dentry->d_parent);
283 p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
287 /* clone a fid to use for creation */
288 ofid = p9_client_walk(dfid, 0, NULL, 1);
291 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
295 gid = v9fs_get_fsgid_for_create(dir);
298 /* Update mode based on ACL value */
299 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
301 p9_debug(P9_DEBUG_VFS, "Failed to get acl values in creat %d\n",
305 err = p9_client_create_dotl(ofid, name, v9fs_open_to_dotl_flags(flags),
308 p9_debug(P9_DEBUG_VFS, "p9_client_open_dotl failed in creat %d\n",
312 v9fs_invalidate_inode_attr(dir);
314 /* instantiate inode and assign the unopened fid to the dentry */
315 fid = p9_client_walk(dfid, 1, &name, 1);
318 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
322 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
324 err = PTR_ERR(inode);
325 p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n", err);
328 err = v9fs_fid_add(dentry, fid);
331 d_instantiate(dentry, inode);
333 /* Now set the ACL based on the default value */
334 v9fs_set_create_acl(dentry, &dacl, &pacl);
336 v9inode = V9FS_I(inode);
337 mutex_lock(&v9inode->v_mutex);
338 if (v9ses->cache && !v9inode->writeback_fid &&
339 ((flags & O_ACCMODE) != O_RDONLY)) {
341 * clone a fid and add it to writeback_fid
342 * we do it during open time instead of
343 * page dirty time via write_begin/page_mkwrite
344 * because we want write after unlink usecase
347 inode_fid = v9fs_writeback_fid(dentry);
348 if (IS_ERR(inode_fid)) {
349 err = PTR_ERR(inode_fid);
350 mutex_unlock(&v9inode->v_mutex);
351 goto err_clunk_old_fid;
353 v9inode->writeback_fid = (void *) inode_fid;
355 mutex_unlock(&v9inode->v_mutex);
356 /* Since we are opening a file, assign the open fid to the file */
357 err = finish_open(file, dentry, generic_file_open, opened);
359 goto err_clunk_old_fid;
360 file->private_data = ofid;
361 #ifdef CONFIG_9P_FSCACHE
363 v9fs_cache_inode_set_cookie(inode, file);
365 *opened |= FILE_CREATED;
372 p9_client_clunk(fid);
375 p9_client_clunk(ofid);
376 v9fs_set_create_acl(NULL, &dacl, &pacl);
381 * v9fs_vfs_mkdir_dotl - VFS mkdir hook to create a directory
382 * @dir: inode that is being unlinked
383 * @dentry: dentry that is being unlinked
384 * @mode: mode for new directory
388 static int v9fs_vfs_mkdir_dotl(struct inode *dir,
389 struct dentry *dentry, umode_t omode)
392 struct v9fs_session_info *v9ses;
393 struct p9_fid *fid = NULL, *dfid = NULL;
399 struct dentry *dir_dentry;
400 struct posix_acl *dacl = NULL, *pacl = NULL;
402 p9_debug(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name);
404 v9ses = v9fs_inode2v9ses(dir);
407 if (dir->i_mode & S_ISGID)
410 dir_dentry = dentry->d_parent;
411 dfid = v9fs_fid_lookup(dir_dentry);
414 p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
419 gid = v9fs_get_fsgid_for_create(dir);
421 /* Update mode based on ACL value */
422 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
424 p9_debug(P9_DEBUG_VFS, "Failed to get acl values in mkdir %d\n",
428 name = (char *) dentry->d_name.name;
429 err = p9_client_mkdir_dotl(dfid, name, mode, gid, &qid);
433 /* instantiate inode and assign the unopened fid to the dentry */
434 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
435 fid = p9_client_walk(dfid, 1, &name, 1);
438 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
444 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
446 err = PTR_ERR(inode);
447 p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n",
451 err = v9fs_fid_add(dentry, fid);
454 d_instantiate(dentry, inode);
458 * Not in cached mode. No need to populate
459 * inode with stat. We need to get an inode
460 * so that we can set the acl with dentry
462 inode = v9fs_get_inode(dir->i_sb, mode, 0);
464 err = PTR_ERR(inode);
467 d_instantiate(dentry, inode);
469 /* Now set the ACL based on the default value */
470 v9fs_set_create_acl(dentry, &dacl, &pacl);
472 v9fs_invalidate_inode_attr(dir);
475 p9_client_clunk(fid);
476 v9fs_set_create_acl(NULL, &dacl, &pacl);
481 v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry,
485 struct v9fs_session_info *v9ses;
487 struct p9_stat_dotl *st;
489 p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry);
491 v9ses = v9fs_dentry2v9ses(dentry);
492 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
493 generic_fillattr(dentry->d_inode, stat);
496 fid = v9fs_fid_lookup(dentry);
500 /* Ask for all the fields in stat structure. Server will return
501 * whatever it supports
504 st = p9_client_getattr_dotl(fid, P9_STATS_ALL);
508 v9fs_stat2inode_dotl(st, dentry->d_inode);
509 generic_fillattr(dentry->d_inode, stat);
510 /* Change block size to what the server returned */
511 stat->blksize = st->st_blksize;
520 #define P9_ATTR_MODE (1 << 0)
521 #define P9_ATTR_UID (1 << 1)
522 #define P9_ATTR_GID (1 << 2)
523 #define P9_ATTR_SIZE (1 << 3)
524 #define P9_ATTR_ATIME (1 << 4)
525 #define P9_ATTR_MTIME (1 << 5)
526 #define P9_ATTR_CTIME (1 << 6)
527 #define P9_ATTR_ATIME_SET (1 << 7)
528 #define P9_ATTR_MTIME_SET (1 << 8)
530 struct dotl_iattr_map {
535 static int v9fs_mapped_iattr_valid(int iattr_valid)
538 int p9_iattr_valid = 0;
539 struct dotl_iattr_map dotl_iattr_map[] = {
540 { ATTR_MODE, P9_ATTR_MODE },
541 { ATTR_UID, P9_ATTR_UID },
542 { ATTR_GID, P9_ATTR_GID },
543 { ATTR_SIZE, P9_ATTR_SIZE },
544 { ATTR_ATIME, P9_ATTR_ATIME },
545 { ATTR_MTIME, P9_ATTR_MTIME },
546 { ATTR_CTIME, P9_ATTR_CTIME },
547 { ATTR_ATIME_SET, P9_ATTR_ATIME_SET },
548 { ATTR_MTIME_SET, P9_ATTR_MTIME_SET },
550 for (i = 0; i < ARRAY_SIZE(dotl_iattr_map); i++) {
551 if (iattr_valid & dotl_iattr_map[i].iattr_valid)
552 p9_iattr_valid |= dotl_iattr_map[i].p9_iattr_valid;
554 return p9_iattr_valid;
558 * v9fs_vfs_setattr_dotl - set file metadata
559 * @dentry: file whose metadata to set
560 * @iattr: metadata assignment structure
564 int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
567 struct v9fs_session_info *v9ses;
569 struct p9_iattr_dotl p9attr;
571 p9_debug(P9_DEBUG_VFS, "\n");
573 retval = inode_change_ok(dentry->d_inode, iattr);
577 p9attr.valid = v9fs_mapped_iattr_valid(iattr->ia_valid);
578 p9attr.mode = iattr->ia_mode;
579 p9attr.uid = iattr->ia_uid;
580 p9attr.gid = iattr->ia_gid;
581 p9attr.size = iattr->ia_size;
582 p9attr.atime_sec = iattr->ia_atime.tv_sec;
583 p9attr.atime_nsec = iattr->ia_atime.tv_nsec;
584 p9attr.mtime_sec = iattr->ia_mtime.tv_sec;
585 p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec;
588 v9ses = v9fs_dentry2v9ses(dentry);
589 fid = v9fs_fid_lookup(dentry);
593 /* Write all dirty data */
594 if (S_ISREG(dentry->d_inode->i_mode))
595 filemap_write_and_wait(dentry->d_inode->i_mapping);
597 retval = p9_client_setattr(fid, &p9attr);
601 if ((iattr->ia_valid & ATTR_SIZE) &&
602 iattr->ia_size != i_size_read(dentry->d_inode))
603 truncate_setsize(dentry->d_inode, iattr->ia_size);
605 v9fs_invalidate_inode_attr(dentry->d_inode);
606 setattr_copy(dentry->d_inode, iattr);
607 mark_inode_dirty(dentry->d_inode);
608 if (iattr->ia_valid & ATTR_MODE) {
609 /* We also want to update ACL when we update mode bits */
610 retval = v9fs_acl_chmod(dentry);
618 * v9fs_stat2inode_dotl - populate an inode structure with stat info
619 * @stat: stat structure
620 * @inode: inode to populate
621 * @sb: superblock of filesystem
626 v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode)
629 struct v9fs_inode *v9inode = V9FS_I(inode);
631 if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) {
632 inode->i_atime.tv_sec = stat->st_atime_sec;
633 inode->i_atime.tv_nsec = stat->st_atime_nsec;
634 inode->i_mtime.tv_sec = stat->st_mtime_sec;
635 inode->i_mtime.tv_nsec = stat->st_mtime_nsec;
636 inode->i_ctime.tv_sec = stat->st_ctime_sec;
637 inode->i_ctime.tv_nsec = stat->st_ctime_nsec;
638 inode->i_uid = stat->st_uid;
639 inode->i_gid = stat->st_gid;
640 set_nlink(inode, stat->st_nlink);
642 mode = stat->st_mode & S_IALLUGO;
643 mode |= inode->i_mode & ~S_IALLUGO;
644 inode->i_mode = mode;
646 i_size_write(inode, stat->st_size);
647 inode->i_blocks = stat->st_blocks;
649 if (stat->st_result_mask & P9_STATS_ATIME) {
650 inode->i_atime.tv_sec = stat->st_atime_sec;
651 inode->i_atime.tv_nsec = stat->st_atime_nsec;
653 if (stat->st_result_mask & P9_STATS_MTIME) {
654 inode->i_mtime.tv_sec = stat->st_mtime_sec;
655 inode->i_mtime.tv_nsec = stat->st_mtime_nsec;
657 if (stat->st_result_mask & P9_STATS_CTIME) {
658 inode->i_ctime.tv_sec = stat->st_ctime_sec;
659 inode->i_ctime.tv_nsec = stat->st_ctime_nsec;
661 if (stat->st_result_mask & P9_STATS_UID)
662 inode->i_uid = stat->st_uid;
663 if (stat->st_result_mask & P9_STATS_GID)
664 inode->i_gid = stat->st_gid;
665 if (stat->st_result_mask & P9_STATS_NLINK)
666 set_nlink(inode, stat->st_nlink);
667 if (stat->st_result_mask & P9_STATS_MODE) {
668 inode->i_mode = stat->st_mode;
669 if ((S_ISBLK(inode->i_mode)) ||
670 (S_ISCHR(inode->i_mode)))
671 init_special_inode(inode, inode->i_mode,
674 if (stat->st_result_mask & P9_STATS_RDEV)
675 inode->i_rdev = new_decode_dev(stat->st_rdev);
676 if (stat->st_result_mask & P9_STATS_SIZE)
677 i_size_write(inode, stat->st_size);
678 if (stat->st_result_mask & P9_STATS_BLOCKS)
679 inode->i_blocks = stat->st_blocks;
681 if (stat->st_result_mask & P9_STATS_GEN)
682 inode->i_generation = stat->st_gen;
684 /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION
685 * because the inode structure does not have fields for them.
687 v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR;
691 v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry,
700 struct p9_fid *fid = NULL;
701 struct v9fs_session_info *v9ses;
703 name = (char *) dentry->d_name.name;
704 p9_debug(P9_DEBUG_VFS, "%lu,%s,%s\n", dir->i_ino, name, symname);
705 v9ses = v9fs_inode2v9ses(dir);
707 dfid = v9fs_fid_lookup(dentry->d_parent);
710 p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
714 gid = v9fs_get_fsgid_for_create(dir);
716 /* Server doesn't alter fid on TSYMLINK. Hence no need to clone it. */
717 err = p9_client_symlink(dfid, name, (char *)symname, gid, &qid);
720 p9_debug(P9_DEBUG_VFS, "p9_client_symlink failed %d\n", err);
724 v9fs_invalidate_inode_attr(dir);
726 /* Now walk from the parent so we can get an unopened fid. */
727 fid = p9_client_walk(dfid, 1, &name, 1);
730 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
736 /* instantiate inode and assign the unopened fid to dentry */
737 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
739 err = PTR_ERR(inode);
740 p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n",
744 err = v9fs_fid_add(dentry, fid);
747 d_instantiate(dentry, inode);
750 /* Not in cached mode. No need to populate inode with stat */
751 inode = v9fs_get_inode(dir->i_sb, S_IFLNK, 0);
753 err = PTR_ERR(inode);
756 d_instantiate(dentry, inode);
761 p9_client_clunk(fid);
767 * v9fs_vfs_link_dotl - create a hardlink for dotl
768 * @old_dentry: dentry for file to link to
769 * @dir: inode destination for new link
770 * @dentry: dentry for link
775 v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir,
776 struct dentry *dentry)
780 struct dentry *dir_dentry;
781 struct p9_fid *dfid, *oldfid;
782 struct v9fs_session_info *v9ses;
784 p9_debug(P9_DEBUG_VFS, "dir ino: %lu, old_name: %s, new_name: %s\n",
785 dir->i_ino, old_dentry->d_name.name, dentry->d_name.name);
787 v9ses = v9fs_inode2v9ses(dir);
788 dir_dentry = dentry->d_parent;
789 dfid = v9fs_fid_lookup(dir_dentry);
791 return PTR_ERR(dfid);
793 oldfid = v9fs_fid_lookup(old_dentry);
795 return PTR_ERR(oldfid);
797 name = (char *) dentry->d_name.name;
799 err = p9_client_link(dfid, oldfid, (char *)dentry->d_name.name);
802 p9_debug(P9_DEBUG_VFS, "p9_client_link failed %d\n", err);
806 v9fs_invalidate_inode_attr(dir);
807 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
808 /* Get the latest stat info from server. */
810 fid = v9fs_fid_lookup(old_dentry);
814 v9fs_refresh_inode_dotl(fid, old_dentry->d_inode);
816 ihold(old_dentry->d_inode);
817 d_instantiate(dentry, old_dentry->d_inode);
823 * v9fs_vfs_mknod_dotl - create a special file
824 * @dir: inode destination for new link
825 * @dentry: dentry for file
826 * @mode: mode for creation
827 * @rdev: device associated with special file
831 v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
838 struct v9fs_session_info *v9ses;
839 struct p9_fid *fid = NULL, *dfid = NULL;
842 struct dentry *dir_dentry;
843 struct posix_acl *dacl = NULL, *pacl = NULL;
845 p9_debug(P9_DEBUG_VFS, " %lu,%s mode: %hx MAJOR: %u MINOR: %u\n",
846 dir->i_ino, dentry->d_name.name, omode,
847 MAJOR(rdev), MINOR(rdev));
849 if (!new_valid_dev(rdev))
852 v9ses = v9fs_inode2v9ses(dir);
853 dir_dentry = dentry->d_parent;
854 dfid = v9fs_fid_lookup(dir_dentry);
857 p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
862 gid = v9fs_get_fsgid_for_create(dir);
864 /* Update mode based on ACL value */
865 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
867 p9_debug(P9_DEBUG_VFS, "Failed to get acl values in mknod %d\n",
871 name = (char *) dentry->d_name.name;
873 err = p9_client_mknod_dotl(dfid, name, mode, rdev, gid, &qid);
877 v9fs_invalidate_inode_attr(dir);
878 /* instantiate inode and assign the unopened fid to the dentry */
879 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
880 fid = p9_client_walk(dfid, 1, &name, 1);
883 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
889 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
891 err = PTR_ERR(inode);
892 p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n",
896 err = v9fs_fid_add(dentry, fid);
899 d_instantiate(dentry, inode);
903 * Not in cached mode. No need to populate inode with stat.
904 * socket syscall returns a fd, so we need instantiate
906 inode = v9fs_get_inode(dir->i_sb, mode, rdev);
908 err = PTR_ERR(inode);
911 d_instantiate(dentry, inode);
913 /* Now set the ACL based on the default value */
914 v9fs_set_create_acl(dentry, &dacl, &pacl);
917 p9_client_clunk(fid);
918 v9fs_set_create_acl(NULL, &dacl, &pacl);
923 * v9fs_vfs_follow_link_dotl - follow a symlink path
924 * @dentry: dentry for symlink
930 v9fs_vfs_follow_link_dotl(struct dentry *dentry, struct nameidata *nd)
934 char *link = __getname();
937 p9_debug(P9_DEBUG_VFS, "%s\n", dentry->d_name.name);
940 link = ERR_PTR(-ENOMEM);
943 fid = v9fs_fid_lookup(dentry);
946 link = ERR_CAST(fid);
949 retval = p9_client_readlink(fid, &target);
951 strcpy(link, target);
956 link = ERR_PTR(retval);
958 nd_set_link(nd, link);
962 int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode)
965 struct p9_stat_dotl *st;
966 struct v9fs_session_info *v9ses;
968 v9ses = v9fs_inode2v9ses(inode);
969 st = p9_client_getattr_dotl(fid, P9_STATS_ALL);
973 * Don't update inode if the file type is different
975 if ((inode->i_mode & S_IFMT) != (st->st_mode & S_IFMT))
978 spin_lock(&inode->i_lock);
980 * We don't want to refresh inode->i_size,
981 * because we may have cached data
983 i_size = inode->i_size;
984 v9fs_stat2inode_dotl(st, inode);
986 inode->i_size = i_size;
987 spin_unlock(&inode->i_lock);
993 const struct inode_operations v9fs_dir_inode_operations_dotl = {
994 .create = v9fs_vfs_create_dotl,
995 .atomic_open = v9fs_vfs_atomic_open_dotl,
996 .lookup = v9fs_vfs_lookup,
997 .link = v9fs_vfs_link_dotl,
998 .symlink = v9fs_vfs_symlink_dotl,
999 .unlink = v9fs_vfs_unlink,
1000 .mkdir = v9fs_vfs_mkdir_dotl,
1001 .rmdir = v9fs_vfs_rmdir,
1002 .mknod = v9fs_vfs_mknod_dotl,
1003 .rename = v9fs_vfs_rename,
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_file_inode_operations_dotl = {
1014 .getattr = v9fs_vfs_getattr_dotl,
1015 .setattr = v9fs_vfs_setattr_dotl,
1016 .setxattr = generic_setxattr,
1017 .getxattr = generic_getxattr,
1018 .removexattr = generic_removexattr,
1019 .listxattr = v9fs_listxattr,
1020 .get_acl = v9fs_iop_get_acl,
1023 const struct inode_operations v9fs_symlink_inode_operations_dotl = {
1024 .readlink = generic_readlink,
1025 .follow_link = v9fs_vfs_follow_link_dotl,
1026 .put_link = v9fs_vfs_put_link,
1027 .getattr = v9fs_vfs_getattr_dotl,
1028 .setattr = v9fs_vfs_setattr_dotl,
1029 .setxattr = generic_setxattr,
1030 .getxattr = generic_getxattr,
1031 .removexattr = generic_removexattr,
1032 .listxattr = v9fs_listxattr,