1 /* dir.c: AFS filesystem directory handling
3 * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/init.h>
16 #include <linux/namei.h>
17 #include <linux/pagemap.h>
18 #include <linux/ctype.h>
19 #include <linux/sched.h>
22 static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
24 static int afs_dir_open(struct inode *inode, struct file *file);
25 static int afs_readdir(struct file *file, struct dir_context *ctx);
26 static int afs_d_revalidate(struct dentry *dentry, unsigned int flags);
27 static int afs_d_delete(const struct dentry *dentry);
28 static void afs_d_release(struct dentry *dentry);
29 static int afs_lookup_filldir(void *_cookie, const char *name, int nlen,
30 loff_t fpos, u64 ino, unsigned dtype);
31 static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
33 static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
34 static int afs_rmdir(struct inode *dir, struct dentry *dentry);
35 static int afs_unlink(struct inode *dir, struct dentry *dentry);
36 static int afs_link(struct dentry *from, struct inode *dir,
37 struct dentry *dentry);
38 static int afs_symlink(struct inode *dir, struct dentry *dentry,
40 static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
41 struct inode *new_dir, struct dentry *new_dentry);
43 const struct file_operations afs_dir_file_operations = {
45 .release = afs_release,
46 .iterate = afs_readdir,
48 .llseek = generic_file_llseek,
51 const struct inode_operations afs_dir_inode_operations = {
56 .symlink = afs_symlink,
60 .permission = afs_permission,
61 .getattr = afs_getattr,
62 .setattr = afs_setattr,
65 const struct dentry_operations afs_fs_dentry_operations = {
66 .d_revalidate = afs_d_revalidate,
67 .d_delete = afs_d_delete,
68 .d_release = afs_d_release,
69 .d_automount = afs_d_automount,
72 #define AFS_DIR_HASHTBL_SIZE 128
73 #define AFS_DIR_DIRENT_SIZE 32
74 #define AFS_DIRENT_PER_BLOCK 64
84 uint8_t overflow[4]; /* if any char of the name (inc
85 * NUL) reaches here, consume
86 * the next dirent too */
88 uint8_t extended_name[32];
91 /* AFS directory page header (one at the beginning of every 2048-byte chunk) */
92 struct afs_dir_pagehdr {
95 #define AFS_DIR_MAGIC htons(1234)
101 /* directory block layout */
102 union afs_dir_block {
104 struct afs_dir_pagehdr pagehdr;
107 struct afs_dir_pagehdr pagehdr;
108 uint8_t alloc_ctrs[128];
110 uint16_t hashtable[AFS_DIR_HASHTBL_SIZE];
113 union afs_dirent dirents[AFS_DIRENT_PER_BLOCK];
116 /* layout on a linux VM page */
117 struct afs_dir_page {
118 union afs_dir_block blocks[PAGE_SIZE / sizeof(union afs_dir_block)];
121 struct afs_lookup_cookie {
122 struct dir_context ctx;
129 * check that a directory page is valid
131 static inline void afs_dir_check_page(struct inode *dir, struct page *page)
133 struct afs_dir_page *dbuf;
138 /* check the page count */
139 qty = desc.size / sizeof(dbuf->blocks[0]);
143 if (page->index == 0 && qty != ntohs(dbuf->blocks[0].pagehdr.npages)) {
144 printk("kAFS: %s(%lu): wrong number of dir blocks %d!=%hu\n",
145 __func__, dir->i_ino, qty,
146 ntohs(dbuf->blocks[0].pagehdr.npages));
151 /* determine how many magic numbers there should be in this page */
152 latter = dir->i_size - page_offset(page);
153 if (latter >= PAGE_SIZE)
157 qty /= sizeof(union afs_dir_block);
160 dbuf = page_address(page);
161 for (tmp = 0; tmp < qty; tmp++) {
162 if (dbuf->blocks[tmp].pagehdr.magic != AFS_DIR_MAGIC) {
163 printk("kAFS: %s(%lu): bad magic %d/%d is %04hx\n",
164 __func__, dir->i_ino, tmp, qty,
165 ntohs(dbuf->blocks[tmp].pagehdr.magic));
170 SetPageChecked(page);
174 SetPageChecked(page);
179 * discard a page cached in the pagecache
181 static inline void afs_dir_put_page(struct page *page)
184 page_cache_release(page);
188 * get a page into the pagecache
190 static struct page *afs_dir_get_page(struct inode *dir, unsigned long index,
194 _enter("{%lu},%lu", dir->i_ino, index);
196 page = read_cache_page(dir->i_mapping, index, afs_page_filler, key);
199 if (!PageChecked(page))
200 afs_dir_check_page(dir, page);
207 afs_dir_put_page(page);
209 return ERR_PTR(-EIO);
213 * open an AFS directory file
215 static int afs_dir_open(struct inode *inode, struct file *file)
217 _enter("{%lu}", inode->i_ino);
219 BUILD_BUG_ON(sizeof(union afs_dir_block) != 2048);
220 BUILD_BUG_ON(sizeof(union afs_dirent) != 32);
222 if (test_bit(AFS_VNODE_DELETED, &AFS_FS_I(inode)->flags))
225 return afs_open(inode, file);
229 * deal with one block in an AFS directory
231 static int afs_dir_iterate_block(struct dir_context *ctx,
232 union afs_dir_block *block,
235 union afs_dirent *dire;
236 unsigned offset, next, curr;
240 _enter("%u,%x,%p,,",(unsigned)ctx->pos,blkoff,block);
242 curr = (ctx->pos - blkoff) / sizeof(union afs_dirent);
244 /* walk through the block, an entry at a time */
245 for (offset = AFS_DIRENT_PER_BLOCK - block->pagehdr.nentries;
246 offset < AFS_DIRENT_PER_BLOCK;
251 /* skip entries marked unused in the bitmap */
252 if (!(block->pagehdr.bitmap[offset / 8] &
253 (1 << (offset % 8)))) {
254 _debug("ENT[%Zu.%u]: unused",
255 blkoff / sizeof(union afs_dir_block), offset);
258 next * sizeof(union afs_dirent);
262 /* got a valid entry */
263 dire = &block->dirents[offset];
264 nlen = strnlen(dire->u.name,
266 offset * sizeof(union afs_dirent));
268 _debug("ENT[%Zu.%u]: %s %Zu \"%s\"",
269 blkoff / sizeof(union afs_dir_block), offset,
270 (offset < curr ? "skip" : "fill"),
273 /* work out where the next possible entry is */
274 for (tmp = nlen; tmp > 15; tmp -= sizeof(union afs_dirent)) {
275 if (next >= AFS_DIRENT_PER_BLOCK) {
276 _debug("ENT[%Zu.%u]:"
277 " %u travelled beyond end dir block"
279 blkoff / sizeof(union afs_dir_block),
280 offset, next, tmp, nlen);
283 if (!(block->pagehdr.bitmap[next / 8] &
284 (1 << (next % 8)))) {
285 _debug("ENT[%Zu.%u]:"
286 " %u unmarked extension (len %u/%Zu)",
287 blkoff / sizeof(union afs_dir_block),
288 offset, next, tmp, nlen);
292 _debug("ENT[%Zu.%u]: ext %u/%Zu",
293 blkoff / sizeof(union afs_dir_block),
298 /* skip if starts before the current position */
302 /* found the next entry */
303 if (!dir_emit(ctx, dire->u.name, nlen,
304 ntohl(dire->u.vnode),
305 ctx->actor == afs_lookup_filldir ?
306 ntohl(dire->u.unique) : DT_UNKNOWN)) {
307 _leave(" = 0 [full]");
311 ctx->pos = blkoff + next * sizeof(union afs_dirent);
314 _leave(" = 1 [more]");
319 * iterate through the data blob that lists the contents of an AFS directory
321 static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx,
324 union afs_dir_block *dblock;
325 struct afs_dir_page *dbuf;
327 unsigned blkoff, limit;
330 _enter("{%lu},%u,,", dir->i_ino, (unsigned)ctx->pos);
332 if (test_bit(AFS_VNODE_DELETED, &AFS_FS_I(dir)->flags)) {
333 _leave(" = -ESTALE");
337 /* round the file position up to the next entry boundary */
338 ctx->pos += sizeof(union afs_dirent) - 1;
339 ctx->pos &= ~(sizeof(union afs_dirent) - 1);
341 /* walk through the blocks in sequence */
343 while (ctx->pos < dir->i_size) {
344 blkoff = ctx->pos & ~(sizeof(union afs_dir_block) - 1);
346 /* fetch the appropriate page from the directory */
347 page = afs_dir_get_page(dir, blkoff / PAGE_SIZE, key);
353 limit = blkoff & ~(PAGE_SIZE - 1);
355 dbuf = page_address(page);
357 /* deal with the individual blocks stashed on this page */
359 dblock = &dbuf->blocks[(blkoff % PAGE_SIZE) /
360 sizeof(union afs_dir_block)];
361 ret = afs_dir_iterate_block(ctx, dblock, blkoff);
363 afs_dir_put_page(page);
367 blkoff += sizeof(union afs_dir_block);
369 } while (ctx->pos < dir->i_size && blkoff < limit);
371 afs_dir_put_page(page);
376 _leave(" = %d", ret);
381 * read an AFS directory
383 static int afs_readdir(struct file *file, struct dir_context *ctx)
385 return afs_dir_iterate(file_inode(file),
386 ctx, file->private_data);
390 * search the directory for a name
391 * - if afs_dir_iterate_block() spots this function, it'll pass the FID
392 * uniquifier through dtype
394 static int afs_lookup_filldir(void *_cookie, const char *name, int nlen,
395 loff_t fpos, u64 ino, unsigned dtype)
397 struct afs_lookup_cookie *cookie = _cookie;
399 _enter("{%s,%u},%s,%u,,%llu,%u",
400 cookie->name.name, cookie->name.len, name, nlen,
401 (unsigned long long) ino, dtype);
403 /* insanity checks first */
404 BUILD_BUG_ON(sizeof(union afs_dir_block) != 2048);
405 BUILD_BUG_ON(sizeof(union afs_dirent) != 32);
407 if (cookie->name.len != nlen ||
408 memcmp(cookie->name.name, name, nlen) != 0) {
413 cookie->fid.vnode = ino;
414 cookie->fid.unique = dtype;
417 _leave(" = -1 [found]");
422 * do a lookup in a directory
423 * - just returns the FID the dentry name maps to if found
425 static int afs_do_lookup(struct inode *dir, struct dentry *dentry,
426 struct afs_fid *fid, struct key *key)
428 struct afs_super_info *as = dir->i_sb->s_fs_info;
429 struct afs_lookup_cookie cookie = {
430 .ctx.actor = afs_lookup_filldir,
431 .name = dentry->d_name,
432 .fid.vid = as->volume->vid
436 _enter("{%lu},%p{%s},", dir->i_ino, dentry, dentry->d_name.name);
438 /* search the directory */
439 ret = afs_dir_iterate(dir, &cookie.ctx, key);
441 _leave(" = %d [iter]", ret);
447 _leave(" = -ENOENT [not found]");
452 _leave(" = 0 { vn=%u u=%u }", fid->vnode, fid->unique);
457 * Try to auto mount the mountpoint with pseudo directory, if the autocell
458 * operation is setted.
460 static struct inode *afs_try_auto_mntpt(
461 int ret, struct dentry *dentry, struct inode *dir, struct key *key,
464 const char *devname = dentry->d_name.name;
465 struct afs_vnode *vnode = AFS_FS_I(dir);
468 _enter("%d, %p{%s}, {%x:%u}, %p",
469 ret, dentry, devname, vnode->fid.vid, vnode->fid.vnode, key);
471 if (ret != -ENOENT ||
472 !test_bit(AFS_VNODE_AUTOCELL, &vnode->flags))
475 inode = afs_iget_autocell(dir, devname, strlen(devname), key);
477 ret = PTR_ERR(inode);
481 *fid = AFS_FS_I(inode)->fid;
482 _leave("= %p", inode);
491 * look up an entry in a directory
493 static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
496 struct afs_vnode *vnode;
502 vnode = AFS_FS_I(dir);
504 _enter("{%x:%u},%p{%s},",
505 vnode->fid.vid, vnode->fid.vnode, dentry, dentry->d_name.name);
507 ASSERTCMP(dentry->d_inode, ==, NULL);
509 if (dentry->d_name.len >= AFSNAMEMAX) {
510 _leave(" = -ENAMETOOLONG");
511 return ERR_PTR(-ENAMETOOLONG);
514 if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) {
515 _leave(" = -ESTALE");
516 return ERR_PTR(-ESTALE);
519 key = afs_request_key(vnode->volume->cell);
521 _leave(" = %ld [key]", PTR_ERR(key));
522 return ERR_CAST(key);
525 ret = afs_validate(vnode, key);
528 _leave(" = %d [val]", ret);
532 ret = afs_do_lookup(dir, dentry, &fid, key);
534 inode = afs_try_auto_mntpt(ret, dentry, dir, key, &fid);
535 if (!IS_ERR(inode)) {
540 ret = PTR_ERR(inode);
542 if (ret == -ENOENT) {
544 _leave(" = NULL [negative]");
547 _leave(" = %d [do]", ret);
550 dentry->d_fsdata = (void *)(unsigned long) vnode->status.data_version;
552 /* instantiate the dentry */
553 inode = afs_iget(dir->i_sb, key, &fid, NULL, NULL);
556 _leave(" = %ld", PTR_ERR(inode));
557 return ERR_CAST(inode);
561 d_add(dentry, inode);
562 _leave(" = 0 { vn=%u u=%u } -> { ino=%lu v=%u }",
565 dentry->d_inode->i_ino,
566 dentry->d_inode->i_generation);
572 * check that a dentry lookup hit has found a valid entry
573 * - NOTE! the hit can be a negative hit too, so we can't assume we have an
576 static int afs_d_revalidate(struct dentry *dentry, unsigned int flags)
578 struct afs_vnode *vnode, *dir;
579 struct afs_fid uninitialized_var(fid);
580 struct dentry *parent;
585 if (flags & LOOKUP_RCU)
588 vnode = AFS_FS_I(dentry->d_inode);
591 _enter("{v={%x:%u} n=%s fl=%lx},",
592 vnode->fid.vid, vnode->fid.vnode, dentry->d_name.name,
595 _enter("{neg n=%s}", dentry->d_name.name);
597 key = afs_request_key(AFS_FS_S(dentry->d_sb)->volume->cell);
601 /* lock down the parent dentry so we can peer at it */
602 parent = dget_parent(dentry);
603 dir = AFS_FS_I(parent->d_inode);
605 /* validate the parent directory */
606 if (test_bit(AFS_VNODE_MODIFIED, &dir->flags))
607 afs_validate(dir, key);
609 if (test_bit(AFS_VNODE_DELETED, &dir->flags)) {
610 _debug("%s: parent dir deleted", dentry->d_name.name);
614 dir_version = (void *) (unsigned long) dir->status.data_version;
615 if (dentry->d_fsdata == dir_version)
616 goto out_valid; /* the dir contents are unchanged */
618 _debug("dir modified");
620 /* search the directory for this vnode */
621 ret = afs_do_lookup(&dir->vfs_inode, dentry, &fid, key);
624 /* the filename maps to something */
625 if (!dentry->d_inode)
627 if (is_bad_inode(dentry->d_inode)) {
628 printk("kAFS: afs_d_revalidate: %s/%s has bad inode\n",
629 parent->d_name.name, dentry->d_name.name);
633 /* if the vnode ID has changed, then the dirent points to a
635 if (fid.vnode != vnode->fid.vnode) {
636 _debug("%s: dirent changed [%u != %u]",
637 dentry->d_name.name, fid.vnode,
642 /* if the vnode ID uniqifier has changed, then the file has
643 * been deleted and replaced, and the original vnode ID has
645 if (fid.unique != vnode->fid.unique) {
646 _debug("%s: file deleted (uq %u -> %u I:%u)",
647 dentry->d_name.name, fid.unique,
649 dentry->d_inode->i_generation);
650 spin_lock(&vnode->lock);
651 set_bit(AFS_VNODE_DELETED, &vnode->flags);
652 spin_unlock(&vnode->lock);
658 /* the filename is unknown */
659 _debug("%s: dirent not found", dentry->d_name.name);
665 _debug("failed to iterate dir %s: %d",
666 parent->d_name.name, ret);
671 dentry->d_fsdata = dir_version;
675 _leave(" = 1 [valid]");
678 /* the dirent, if it exists, now points to a different vnode */
680 spin_lock(&dentry->d_lock);
681 dentry->d_flags |= DCACHE_NFSFS_RENAMED;
682 spin_unlock(&dentry->d_lock);
685 /* don't unhash if we have submounts */
686 shrink_submounts_and_drop(dentry);
688 _debug("dropping dentry %s/%s",
689 parent->d_name.name, dentry->d_name.name);
693 _leave(" = 0 [bad]");
698 * allow the VFS to enquire as to whether a dentry should be unhashed (mustn't
700 * - called from dput() when d_count is going to 0.
701 * - return 1 to request dentry be unhashed, 0 otherwise
703 static int afs_d_delete(const struct dentry *dentry)
705 _enter("%s", dentry->d_name.name);
707 if (dentry->d_flags & DCACHE_NFSFS_RENAMED)
710 if (dentry->d_inode &&
711 (test_bit(AFS_VNODE_DELETED, &AFS_FS_I(dentry->d_inode)->flags) ||
712 test_bit(AFS_VNODE_PSEUDODIR, &AFS_FS_I(dentry->d_inode)->flags)))
715 _leave(" = 0 [keep]");
719 _leave(" = 1 [zap]");
724 * handle dentry release
726 static void afs_d_release(struct dentry *dentry)
728 _enter("%s", dentry->d_name.name);
732 * create a directory on an AFS filesystem
734 static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
736 struct afs_file_status status;
737 struct afs_callback cb;
738 struct afs_server *server;
739 struct afs_vnode *dvnode, *vnode;
745 dvnode = AFS_FS_I(dir);
747 _enter("{%x:%u},{%s},%ho",
748 dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name, mode);
750 key = afs_request_key(dvnode->volume->cell);
757 ret = afs_vnode_create(dvnode, key, dentry->d_name.name,
758 mode, &fid, &status, &cb, &server);
762 inode = afs_iget(dir->i_sb, key, &fid, &status, &cb);
764 /* ENOMEM at a really inconvenient time - just abandon the new
765 * directory on the server */
766 ret = PTR_ERR(inode);
770 /* apply the status report we've got for the new vnode */
771 vnode = AFS_FS_I(inode);
772 spin_lock(&vnode->lock);
774 spin_unlock(&vnode->lock);
775 afs_vnode_finalise_status_update(vnode, server);
776 afs_put_server(server);
778 d_instantiate(dentry, inode);
779 if (d_unhashed(dentry)) {
780 _debug("not hashed");
788 afs_put_server(server);
793 _leave(" = %d", ret);
798 * remove a directory from an AFS filesystem
800 static int afs_rmdir(struct inode *dir, struct dentry *dentry)
802 struct afs_vnode *dvnode, *vnode;
806 dvnode = AFS_FS_I(dir);
808 _enter("{%x:%u},{%s}",
809 dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name);
811 key = afs_request_key(dvnode->volume->cell);
817 ret = afs_vnode_remove(dvnode, key, dentry->d_name.name, true);
821 if (dentry->d_inode) {
822 vnode = AFS_FS_I(dentry->d_inode);
823 clear_nlink(&vnode->vfs_inode);
824 set_bit(AFS_VNODE_DELETED, &vnode->flags);
825 afs_discard_callback_on_delete(vnode);
835 _leave(" = %d", ret);
840 * remove a file from an AFS filesystem
842 static int afs_unlink(struct inode *dir, struct dentry *dentry)
844 struct afs_vnode *dvnode, *vnode;
848 dvnode = AFS_FS_I(dir);
850 _enter("{%x:%u},{%s}",
851 dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name);
854 if (dentry->d_name.len >= AFSNAMEMAX)
857 key = afs_request_key(dvnode->volume->cell);
863 if (dentry->d_inode) {
864 vnode = AFS_FS_I(dentry->d_inode);
866 /* make sure we have a callback promise on the victim */
867 ret = afs_validate(vnode, key);
872 ret = afs_vnode_remove(dvnode, key, dentry->d_name.name, false);
876 if (dentry->d_inode) {
877 /* if the file wasn't deleted due to excess hard links, the
878 * fileserver will break the callback promise on the file - if
879 * it had one - before it returns to us, and if it was deleted,
882 * however, if we didn't have a callback promise outstanding,
883 * or it was outstanding on a different server, then it won't
886 vnode = AFS_FS_I(dentry->d_inode);
887 if (test_bit(AFS_VNODE_DELETED, &vnode->flags))
888 _debug("AFS_VNODE_DELETED");
889 if (test_bit(AFS_VNODE_CB_BROKEN, &vnode->flags))
890 _debug("AFS_VNODE_CB_BROKEN");
891 set_bit(AFS_VNODE_CB_BROKEN, &vnode->flags);
892 ret = afs_validate(vnode, key);
893 _debug("nlink %d [val %d]", vnode->vfs_inode.i_nlink, ret);
903 _leave(" = %d", ret);
908 * create a regular file on an AFS filesystem
910 static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
913 struct afs_file_status status;
914 struct afs_callback cb;
915 struct afs_server *server;
916 struct afs_vnode *dvnode, *vnode;
922 dvnode = AFS_FS_I(dir);
924 _enter("{%x:%u},{%s},%ho,",
925 dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name, mode);
927 key = afs_request_key(dvnode->volume->cell);
934 ret = afs_vnode_create(dvnode, key, dentry->d_name.name,
935 mode, &fid, &status, &cb, &server);
939 inode = afs_iget(dir->i_sb, key, &fid, &status, &cb);
941 /* ENOMEM at a really inconvenient time - just abandon the new
942 * directory on the server */
943 ret = PTR_ERR(inode);
947 /* apply the status report we've got for the new vnode */
948 vnode = AFS_FS_I(inode);
949 spin_lock(&vnode->lock);
951 spin_unlock(&vnode->lock);
952 afs_vnode_finalise_status_update(vnode, server);
953 afs_put_server(server);
955 d_instantiate(dentry, inode);
956 if (d_unhashed(dentry)) {
957 _debug("not hashed");
965 afs_put_server(server);
970 _leave(" = %d", ret);
975 * create a hard link between files in an AFS filesystem
977 static int afs_link(struct dentry *from, struct inode *dir,
978 struct dentry *dentry)
980 struct afs_vnode *dvnode, *vnode;
984 vnode = AFS_FS_I(from->d_inode);
985 dvnode = AFS_FS_I(dir);
987 _enter("{%x:%u},{%x:%u},{%s}",
988 vnode->fid.vid, vnode->fid.vnode,
989 dvnode->fid.vid, dvnode->fid.vnode,
990 dentry->d_name.name);
992 key = afs_request_key(dvnode->volume->cell);
998 ret = afs_vnode_link(dvnode, vnode, key, dentry->d_name.name);
1002 ihold(&vnode->vfs_inode);
1003 d_instantiate(dentry, &vnode->vfs_inode);
1012 _leave(" = %d", ret);
1017 * create a symlink in an AFS filesystem
1019 static int afs_symlink(struct inode *dir, struct dentry *dentry,
1020 const char *content)
1022 struct afs_file_status status;
1023 struct afs_server *server;
1024 struct afs_vnode *dvnode, *vnode;
1026 struct inode *inode;
1030 dvnode = AFS_FS_I(dir);
1032 _enter("{%x:%u},{%s},%s",
1033 dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name,
1037 if (strlen(content) >= AFSPATHMAX)
1040 key = afs_request_key(dvnode->volume->cell);
1046 ret = afs_vnode_symlink(dvnode, key, dentry->d_name.name, content,
1047 &fid, &status, &server);
1051 inode = afs_iget(dir->i_sb, key, &fid, &status, NULL);
1052 if (IS_ERR(inode)) {
1053 /* ENOMEM at a really inconvenient time - just abandon the new
1054 * directory on the server */
1055 ret = PTR_ERR(inode);
1059 /* apply the status report we've got for the new vnode */
1060 vnode = AFS_FS_I(inode);
1061 spin_lock(&vnode->lock);
1062 vnode->update_cnt++;
1063 spin_unlock(&vnode->lock);
1064 afs_vnode_finalise_status_update(vnode, server);
1065 afs_put_server(server);
1067 d_instantiate(dentry, inode);
1068 if (d_unhashed(dentry)) {
1069 _debug("not hashed");
1077 afs_put_server(server);
1082 _leave(" = %d", ret);
1087 * rename a file in an AFS filesystem and/or move it between directories
1089 static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
1090 struct inode *new_dir, struct dentry *new_dentry)
1092 struct afs_vnode *orig_dvnode, *new_dvnode, *vnode;
1096 vnode = AFS_FS_I(old_dentry->d_inode);
1097 orig_dvnode = AFS_FS_I(old_dir);
1098 new_dvnode = AFS_FS_I(new_dir);
1100 _enter("{%x:%u},{%x:%u},{%x:%u},{%s}",
1101 orig_dvnode->fid.vid, orig_dvnode->fid.vnode,
1102 vnode->fid.vid, vnode->fid.vnode,
1103 new_dvnode->fid.vid, new_dvnode->fid.vnode,
1104 new_dentry->d_name.name);
1106 key = afs_request_key(orig_dvnode->volume->cell);
1112 ret = afs_vnode_rename(orig_dvnode, new_dvnode, key,
1113 old_dentry->d_name.name,
1114 new_dentry->d_name.name);
1125 _leave(" = %d", ret);