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 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);
153 return ERR_PTR(retval);
158 v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses, struct p9_fid *fid,
159 struct super_block *sb, int new)
161 struct p9_stat_dotl *st;
162 struct inode *inode = NULL;
164 st = p9_client_getattr_dotl(fid, P9_STATS_BASIC | P9_STATS_GEN);
168 inode = v9fs_qid_iget_dotl(sb, &st->qid, fid, st, new);
173 struct dotl_openflag_map {
178 static int v9fs_mapped_dotl_flags(int flags)
182 struct dotl_openflag_map dotl_oflag_map[] = {
183 { O_CREAT, P9_DOTL_CREATE },
184 { O_EXCL, P9_DOTL_EXCL },
185 { O_NOCTTY, P9_DOTL_NOCTTY },
186 { O_APPEND, P9_DOTL_APPEND },
187 { O_NONBLOCK, P9_DOTL_NONBLOCK },
188 { O_DSYNC, P9_DOTL_DSYNC },
189 { FASYNC, P9_DOTL_FASYNC },
190 { O_DIRECT, P9_DOTL_DIRECT },
191 { O_LARGEFILE, P9_DOTL_LARGEFILE },
192 { O_DIRECTORY, P9_DOTL_DIRECTORY },
193 { O_NOFOLLOW, P9_DOTL_NOFOLLOW },
194 { O_NOATIME, P9_DOTL_NOATIME },
195 { O_CLOEXEC, P9_DOTL_CLOEXEC },
196 { O_SYNC, P9_DOTL_SYNC},
198 for (i = 0; i < ARRAY_SIZE(dotl_oflag_map); i++) {
199 if (flags & dotl_oflag_map[i].open_flag)
200 rflags |= dotl_oflag_map[i].dotl_flag;
206 * v9fs_open_to_dotl_flags- convert Linux specific open flags to
208 * @flags: flags to convert
210 int v9fs_open_to_dotl_flags(int flags)
215 * We have same bits for P9_DOTL_READONLY, P9_DOTL_WRONLY
216 * and P9_DOTL_NOACCESS
218 rflags |= flags & O_ACCMODE;
219 rflags |= v9fs_mapped_dotl_flags(flags);
225 * v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol.
226 * @dir: directory inode that is being created
227 * @dentry: dentry that is being deleted
228 * @omode: create permissions
233 v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
236 return v9fs_vfs_mknod_dotl(dir, dentry, omode, 0);
240 v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
241 struct file *file, unsigned flags, umode_t omode,
250 struct p9_fid *fid = NULL;
251 struct v9fs_inode *v9inode;
252 struct p9_fid *dfid, *ofid, *inode_fid;
253 struct v9fs_session_info *v9ses;
254 struct posix_acl *pacl = NULL, *dacl = NULL;
255 struct dentry *res = NULL;
257 if (d_unhashed(dentry)) {
258 res = v9fs_vfs_lookup(dir, dentry, 0);
267 if (!(flags & O_CREAT) || d_really_is_positive(dentry))
268 return finish_no_open(file, res);
270 v9ses = v9fs_inode2v9ses(dir);
272 name = (char *) dentry->d_name.name;
273 p9_debug(P9_DEBUG_VFS, "name:%s flags:0x%x mode:0x%hx\n",
276 dfid = v9fs_fid_lookup(dentry->d_parent);
279 p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
283 /* clone a fid to use for creation */
284 ofid = p9_client_walk(dfid, 0, NULL, 1);
287 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
291 gid = v9fs_get_fsgid_for_create(dir);
294 /* Update mode based on ACL value */
295 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
297 p9_debug(P9_DEBUG_VFS, "Failed to get acl values in creat %d\n",
301 err = p9_client_create_dotl(ofid, name, v9fs_open_to_dotl_flags(flags),
304 p9_debug(P9_DEBUG_VFS, "p9_client_open_dotl failed in creat %d\n",
308 v9fs_invalidate_inode_attr(dir);
310 /* instantiate inode and assign the unopened fid to the dentry */
311 fid = p9_client_walk(dfid, 1, &name, 1);
314 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err);
318 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
320 err = PTR_ERR(inode);
321 p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n", err);
324 /* Now set the ACL based on the default value */
325 v9fs_set_create_acl(inode, fid, dacl, pacl);
327 v9fs_fid_add(dentry, fid);
328 d_instantiate(dentry, inode);
330 v9inode = V9FS_I(inode);
331 mutex_lock(&v9inode->v_mutex);
332 if ((v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) &&
333 !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;
356 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
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 * @omode: 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 %pd\n", dentry);
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,
476 struct v9fs_session_info *v9ses;
478 struct p9_stat_dotl *st;
480 p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry);
481 v9ses = v9fs_dentry2v9ses(dentry);
482 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
483 generic_fillattr(d_inode(dentry), stat);
486 fid = v9fs_fid_lookup(dentry);
490 /* Ask for all the fields in stat structure. Server will return
491 * whatever it supports
494 st = p9_client_getattr_dotl(fid, P9_STATS_ALL);
498 v9fs_stat2inode_dotl(st, d_inode(dentry));
499 generic_fillattr(d_inode(dentry), stat);
500 /* Change block size to what the server returned */
501 stat->blksize = st->st_blksize;
510 #define P9_ATTR_MODE (1 << 0)
511 #define P9_ATTR_UID (1 << 1)
512 #define P9_ATTR_GID (1 << 2)
513 #define P9_ATTR_SIZE (1 << 3)
514 #define P9_ATTR_ATIME (1 << 4)
515 #define P9_ATTR_MTIME (1 << 5)
516 #define P9_ATTR_CTIME (1 << 6)
517 #define P9_ATTR_ATIME_SET (1 << 7)
518 #define P9_ATTR_MTIME_SET (1 << 8)
520 struct dotl_iattr_map {
525 static int v9fs_mapped_iattr_valid(int iattr_valid)
528 int p9_iattr_valid = 0;
529 struct dotl_iattr_map dotl_iattr_map[] = {
530 { ATTR_MODE, P9_ATTR_MODE },
531 { ATTR_UID, P9_ATTR_UID },
532 { ATTR_GID, P9_ATTR_GID },
533 { ATTR_SIZE, P9_ATTR_SIZE },
534 { ATTR_ATIME, P9_ATTR_ATIME },
535 { ATTR_MTIME, P9_ATTR_MTIME },
536 { ATTR_CTIME, P9_ATTR_CTIME },
537 { ATTR_ATIME_SET, P9_ATTR_ATIME_SET },
538 { ATTR_MTIME_SET, P9_ATTR_MTIME_SET },
540 for (i = 0; i < ARRAY_SIZE(dotl_iattr_map); i++) {
541 if (iattr_valid & dotl_iattr_map[i].iattr_valid)
542 p9_iattr_valid |= dotl_iattr_map[i].p9_iattr_valid;
544 return p9_iattr_valid;
548 * v9fs_vfs_setattr_dotl - set file metadata
549 * @dentry: file whose metadata to set
550 * @iattr: metadata assignment structure
554 int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
558 struct p9_iattr_dotl p9attr;
559 struct inode *inode = d_inode(dentry);
561 p9_debug(P9_DEBUG_VFS, "\n");
563 retval = inode_change_ok(inode, iattr);
567 p9attr.valid = v9fs_mapped_iattr_valid(iattr->ia_valid);
568 p9attr.mode = iattr->ia_mode;
569 p9attr.uid = iattr->ia_uid;
570 p9attr.gid = iattr->ia_gid;
571 p9attr.size = iattr->ia_size;
572 p9attr.atime_sec = iattr->ia_atime.tv_sec;
573 p9attr.atime_nsec = iattr->ia_atime.tv_nsec;
574 p9attr.mtime_sec = iattr->ia_mtime.tv_sec;
575 p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec;
577 fid = v9fs_fid_lookup(dentry);
581 /* Write all dirty data */
582 if (S_ISREG(inode->i_mode))
583 filemap_write_and_wait(inode->i_mapping);
585 retval = p9_client_setattr(fid, &p9attr);
589 if ((iattr->ia_valid & ATTR_SIZE) &&
590 iattr->ia_size != i_size_read(inode))
591 truncate_setsize(inode, iattr->ia_size);
593 v9fs_invalidate_inode_attr(inode);
594 setattr_copy(inode, iattr);
595 mark_inode_dirty(inode);
596 if (iattr->ia_valid & ATTR_MODE) {
597 /* We also want to update ACL when we update mode bits */
598 retval = v9fs_acl_chmod(inode, fid);
606 * v9fs_stat2inode_dotl - populate an inode structure with stat info
607 * @stat: stat structure
608 * @inode: inode to populate
613 v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode)
616 struct v9fs_inode *v9inode = V9FS_I(inode);
618 if ((stat->st_result_mask & P9_STATS_BASIC) == P9_STATS_BASIC) {
619 inode->i_atime.tv_sec = stat->st_atime_sec;
620 inode->i_atime.tv_nsec = stat->st_atime_nsec;
621 inode->i_mtime.tv_sec = stat->st_mtime_sec;
622 inode->i_mtime.tv_nsec = stat->st_mtime_nsec;
623 inode->i_ctime.tv_sec = stat->st_ctime_sec;
624 inode->i_ctime.tv_nsec = stat->st_ctime_nsec;
625 inode->i_uid = stat->st_uid;
626 inode->i_gid = stat->st_gid;
627 set_nlink(inode, stat->st_nlink);
629 mode = stat->st_mode & S_IALLUGO;
630 mode |= inode->i_mode & ~S_IALLUGO;
631 inode->i_mode = mode;
633 i_size_write(inode, stat->st_size);
634 inode->i_blocks = stat->st_blocks;
636 if (stat->st_result_mask & P9_STATS_ATIME) {
637 inode->i_atime.tv_sec = stat->st_atime_sec;
638 inode->i_atime.tv_nsec = stat->st_atime_nsec;
640 if (stat->st_result_mask & P9_STATS_MTIME) {
641 inode->i_mtime.tv_sec = stat->st_mtime_sec;
642 inode->i_mtime.tv_nsec = stat->st_mtime_nsec;
644 if (stat->st_result_mask & P9_STATS_CTIME) {
645 inode->i_ctime.tv_sec = stat->st_ctime_sec;
646 inode->i_ctime.tv_nsec = stat->st_ctime_nsec;
648 if (stat->st_result_mask & P9_STATS_UID)
649 inode->i_uid = stat->st_uid;
650 if (stat->st_result_mask & P9_STATS_GID)
651 inode->i_gid = stat->st_gid;
652 if (stat->st_result_mask & P9_STATS_NLINK)
653 set_nlink(inode, stat->st_nlink);
654 if (stat->st_result_mask & P9_STATS_MODE) {
655 inode->i_mode = stat->st_mode;
656 if ((S_ISBLK(inode->i_mode)) ||
657 (S_ISCHR(inode->i_mode)))
658 init_special_inode(inode, inode->i_mode,
661 if (stat->st_result_mask & P9_STATS_RDEV)
662 inode->i_rdev = new_decode_dev(stat->st_rdev);
663 if (stat->st_result_mask & P9_STATS_SIZE)
664 i_size_write(inode, stat->st_size);
665 if (stat->st_result_mask & P9_STATS_BLOCKS)
666 inode->i_blocks = stat->st_blocks;
668 if (stat->st_result_mask & P9_STATS_GEN)
669 inode->i_generation = stat->st_gen;
671 /* Currently we don't support P9_STATS_BTIME and P9_STATS_DATA_VERSION
672 * because the inode structure does not have fields for them.
674 v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR;
678 v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry,
687 struct p9_fid *fid = NULL;
688 struct v9fs_session_info *v9ses;
690 name = (char *) dentry->d_name.name;
691 p9_debug(P9_DEBUG_VFS, "%lu,%s,%s\n", dir->i_ino, name, symname);
692 v9ses = v9fs_inode2v9ses(dir);
694 dfid = v9fs_fid_lookup(dentry->d_parent);
697 p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
701 gid = v9fs_get_fsgid_for_create(dir);
703 /* Server doesn't alter fid on TSYMLINK. Hence no need to clone it. */
704 err = p9_client_symlink(dfid, name, (char *)symname, gid, &qid);
707 p9_debug(P9_DEBUG_VFS, "p9_client_symlink failed %d\n", err);
711 v9fs_invalidate_inode_attr(dir);
712 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
713 /* Now walk from the parent so we can get an unopened fid. */
714 fid = p9_client_walk(dfid, 1, &name, 1);
717 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
723 /* instantiate inode and assign the unopened fid to dentry */
724 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
726 err = PTR_ERR(inode);
727 p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n",
731 v9fs_fid_add(dentry, fid);
732 d_instantiate(dentry, inode);
736 /* Not in cached mode. No need to populate inode with stat */
737 inode = v9fs_get_inode(dir->i_sb, S_IFLNK, 0);
739 err = PTR_ERR(inode);
742 d_instantiate(dentry, inode);
747 p9_client_clunk(fid);
753 * v9fs_vfs_link_dotl - create a hardlink for dotl
754 * @old_dentry: dentry for file to link to
755 * @dir: inode destination for new link
756 * @dentry: dentry for link
761 v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir,
762 struct dentry *dentry)
765 struct dentry *dir_dentry;
766 struct p9_fid *dfid, *oldfid;
767 struct v9fs_session_info *v9ses;
769 p9_debug(P9_DEBUG_VFS, "dir ino: %lu, old_name: %pd, new_name: %pd\n",
770 dir->i_ino, old_dentry, dentry);
772 v9ses = v9fs_inode2v9ses(dir);
773 dir_dentry = dentry->d_parent;
774 dfid = v9fs_fid_lookup(dir_dentry);
776 return PTR_ERR(dfid);
778 oldfid = v9fs_fid_lookup(old_dentry);
780 return PTR_ERR(oldfid);
782 err = p9_client_link(dfid, oldfid, (char *)dentry->d_name.name);
785 p9_debug(P9_DEBUG_VFS, "p9_client_link failed %d\n", err);
789 v9fs_invalidate_inode_attr(dir);
790 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
791 /* Get the latest stat info from server. */
793 fid = v9fs_fid_lookup(old_dentry);
797 v9fs_refresh_inode_dotl(fid, d_inode(old_dentry));
799 ihold(d_inode(old_dentry));
800 d_instantiate(dentry, d_inode(old_dentry));
806 * v9fs_vfs_mknod_dotl - create a special file
807 * @dir: inode destination for new link
808 * @dentry: dentry for file
809 * @omode: mode for creation
810 * @rdev: device associated with special file
814 v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
821 struct v9fs_session_info *v9ses;
822 struct p9_fid *fid = NULL, *dfid = NULL;
825 struct dentry *dir_dentry;
826 struct posix_acl *dacl = NULL, *pacl = NULL;
828 p9_debug(P9_DEBUG_VFS, " %lu,%pd mode: %hx MAJOR: %u MINOR: %u\n",
829 dir->i_ino, dentry, omode,
830 MAJOR(rdev), MINOR(rdev));
832 v9ses = v9fs_inode2v9ses(dir);
833 dir_dentry = dentry->d_parent;
834 dfid = v9fs_fid_lookup(dir_dentry);
837 p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err);
842 gid = v9fs_get_fsgid_for_create(dir);
844 /* Update mode based on ACL value */
845 err = v9fs_acl_mode(dir, &mode, &dacl, &pacl);
847 p9_debug(P9_DEBUG_VFS, "Failed to get acl values in mknod %d\n",
851 name = (char *) dentry->d_name.name;
853 err = p9_client_mknod_dotl(dfid, name, mode, rdev, gid, &qid);
857 v9fs_invalidate_inode_attr(dir);
858 fid = p9_client_walk(dfid, 1, &name, 1);
861 p9_debug(P9_DEBUG_VFS, "p9_client_walk failed %d\n",
867 /* instantiate inode and assign the unopened fid to the dentry */
868 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
869 inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
871 err = PTR_ERR(inode);
872 p9_debug(P9_DEBUG_VFS, "inode creation failed %d\n",
876 v9fs_set_create_acl(inode, fid, dacl, pacl);
877 v9fs_fid_add(dentry, fid);
878 d_instantiate(dentry, inode);
883 * Not in cached mode. No need to populate inode with stat.
884 * socket syscall returns a fd, so we need instantiate
886 inode = v9fs_get_inode(dir->i_sb, mode, rdev);
888 err = PTR_ERR(inode);
891 v9fs_set_create_acl(inode, fid, dacl, pacl);
892 d_instantiate(dentry, inode);
896 p9_client_clunk(fid);
897 v9fs_put_acl(dacl, pacl);
902 * v9fs_vfs_get_link_dotl - follow a symlink path
903 * @dentry: dentry for symlink
904 * @inode: inode for symlink
905 * @done: destructor for return value
909 v9fs_vfs_get_link_dotl(struct dentry *dentry,
911 struct delayed_call *done)
918 return ERR_PTR(-ECHILD);
920 p9_debug(P9_DEBUG_VFS, "%pd\n", dentry);
922 fid = v9fs_fid_lookup(dentry);
924 return ERR_CAST(fid);
925 retval = p9_client_readlink(fid, &target);
927 return ERR_PTR(retval);
928 set_delayed_call(done, kfree_link, target);
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);
955 if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
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 .atomic_open = v9fs_vfs_atomic_open_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 .get_link = v9fs_vfs_get_link_dotl,
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,