2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License v.2.
10 #include <linux/sched.h>
11 #include <linux/slab.h>
12 #include <linux/spinlock.h>
13 #include <linux/completion.h>
14 #include <linux/buffer_head.h>
15 #include <linux/namei.h>
16 #include <linux/utsname.h>
18 #include <linux/xattr.h>
19 #include <linux/posix_acl.h>
20 #include <asm/semaphore.h>
21 #include <asm/uaccess.h>
32 #include "ops_dentry.h"
33 #include "ops_inode.h"
41 * gfs2_create - Create a file
42 * @dir: The directory in which to create the file
43 * @dentry: The dentry of the new file
44 * @mode: The mode of the new file
49 static int gfs2_create(struct inode *dir, struct dentry *dentry,
50 int mode, struct nameidata *nd)
52 struct gfs2_inode *dip = get_v2ip(dir);
53 struct gfs2_sbd *sdp = dip->i_sbd;
54 struct gfs2_holder ghs[2];
59 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
62 inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode);
65 if (dip->i_alloc.al_rgd)
66 gfs2_inplace_release(dip);
67 gfs2_quota_unlock(dip);
69 gfs2_glock_dq_uninit_m(2, ghs);
71 } else if (PTR_ERR(inode) != -EEXIST ||
72 (nd->intent.open.flags & O_EXCL)) {
73 gfs2_holder_uninit(ghs);
74 return PTR_ERR(inode);
77 error = gfs2_lookupi(dir, &dentry->d_name, 0, &inode);
80 gfs2_holder_uninit(ghs);
82 } else if (error != -ENOENT) {
83 gfs2_holder_uninit(ghs);
88 d_instantiate(dentry, inode);
90 mark_inode_dirty(inode);
96 * gfs2_lookup - Look up a filename in a directory and return its inode
97 * @dir: The directory inode
98 * @dentry: The dentry of the new inode
99 * @nd: passed from Linux VFS, ignored by us
101 * Called by the VFS layer. Lock dir and call gfs2_lookupi()
106 static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
107 struct nameidata *nd)
109 struct gfs2_inode *dip = get_v2ip(dir);
110 struct gfs2_sbd *sdp = dip->i_sbd;
111 struct inode *inode = NULL;
114 if (!sdp->sd_args.ar_localcaching)
115 dentry->d_op = &gfs2_dops;
117 error = gfs2_lookupi(dir, &dentry->d_name, 0, &inode);
118 if (error && error != -ENOENT)
119 return ERR_PTR(error);
122 return d_splice_alias(inode, dentry);
123 d_add(dentry, inode);
129 * gfs2_link - Link to a file
130 * @old_dentry: The inode to link
131 * @dir: Add link to this directory
132 * @dentry: The name of the link
134 * Link the inode in "old_dentry" into the directory "dir" with the
140 static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
141 struct dentry *dentry)
143 struct gfs2_inode *dip = get_v2ip(dir);
144 struct gfs2_sbd *sdp = dip->i_sbd;
145 struct inode *inode = old_dentry->d_inode;
146 struct gfs2_inode *ip = get_v2ip(inode);
147 struct gfs2_holder ghs[2];
151 if (S_ISDIR(ip->i_di.di_mode))
154 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
155 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
157 error = gfs2_glock_nq_m(2, ghs);
161 error = gfs2_repermission(dir, MAY_WRITE | MAY_EXEC, NULL);
165 error = gfs2_dir_search(dip, &dentry->d_name, NULL, NULL);
176 if (!dip->i_di.di_nlink)
179 if (dip->i_di.di_entries == (uint32_t)-1)
182 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
185 if (!ip->i_di.di_nlink)
188 if (ip->i_di.di_nlink == (uint32_t)-1)
191 error = gfs2_diradd_alloc_required(dip, &dentry->d_name,
196 if (alloc_required) {
197 struct gfs2_alloc *al = gfs2_alloc_get(dip);
199 error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
203 error = gfs2_quota_check(dip, dip->i_di.di_uid,
208 al->al_requested = sdp->sd_max_dirres;
210 error = gfs2_inplace_reserve(dip);
214 error = gfs2_trans_begin(sdp,
216 al->al_rgd->rd_ri.ri_length +
217 2 * RES_DINODE + RES_STATFS +
222 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0);
227 error = gfs2_dir_add(dip, &dentry->d_name, &ip->i_num,
228 IF2DT(ip->i_di.di_mode));
232 error = gfs2_change_nlink(ip, +1);
239 gfs2_inplace_release(dip);
243 gfs2_quota_unlock(dip);
250 gfs2_glock_dq_m(2, ghs);
253 gfs2_holder_uninit(ghs);
254 gfs2_holder_uninit(ghs + 1);
257 atomic_inc(&inode->i_count);
258 d_instantiate(dentry, inode);
259 mark_inode_dirty(inode);
266 * gfs2_unlink - Unlink a file
267 * @dir: The inode of the directory containing the file to unlink
268 * @dentry: The file itself
270 * Unlink a file. Call gfs2_unlinki()
275 static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
277 struct gfs2_inode *dip = get_v2ip(dir);
278 struct gfs2_sbd *sdp = dip->i_sbd;
279 struct gfs2_inode *ip = get_v2ip(dentry->d_inode);
280 struct gfs2_unlinked *ul;
281 struct gfs2_holder ghs[2];
284 error = gfs2_unlinked_get(sdp, &ul);
288 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
289 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
291 error = gfs2_glock_nq_m(2, ghs);
295 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
299 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF +
304 error = gfs2_unlinki(dip, &dentry->d_name, ip,ul);
309 gfs2_glock_dq_m(2, ghs);
312 gfs2_holder_uninit(ghs);
313 gfs2_holder_uninit(ghs + 1);
315 gfs2_unlinked_put(sdp, ul);
321 * gfs2_symlink - Create a symlink
322 * @dir: The directory to create the symlink in
323 * @dentry: The dentry to put the symlink in
324 * @symname: The thing which the link points to
329 static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
332 struct gfs2_inode *dip = get_v2ip(dir), *ip;
333 struct gfs2_sbd *sdp = dip->i_sbd;
334 struct gfs2_holder ghs[2];
336 struct buffer_head *dibh;
340 /* Must be stuffed with a null terminator for gfs2_follow_link() */
341 size = strlen(symname);
342 if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1)
343 return -ENAMETOOLONG;
345 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
347 inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO);
349 gfs2_holder_uninit(ghs);
350 return PTR_ERR(inode);
353 ip = get_gl2ip(ghs[1].gh_gl);
355 ip->i_di.di_size = size;
357 error = gfs2_meta_inode_buffer(ip, &dibh);
359 if (!gfs2_assert_withdraw(sdp, !error)) {
360 gfs2_dinode_out(&ip->i_di, dibh->b_data);
361 memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname,
367 if (dip->i_alloc.al_rgd)
368 gfs2_inplace_release(dip);
369 gfs2_quota_unlock(dip);
372 gfs2_glock_dq_uninit_m(2, ghs);
374 d_instantiate(dentry, inode);
375 mark_inode_dirty(inode);
381 * gfs2_mkdir - Make a directory
382 * @dir: The parent directory of the new one
383 * @dentry: The dentry of the new directory
384 * @mode: The mode of the new directory
389 static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
391 struct gfs2_inode *dip = get_v2ip(dir), *ip;
392 struct gfs2_sbd *sdp = dip->i_sbd;
393 struct gfs2_holder ghs[2];
395 struct buffer_head *dibh;
398 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
400 inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode);
402 gfs2_holder_uninit(ghs);
403 return PTR_ERR(inode);
406 ip = get_gl2ip(ghs[1].gh_gl);
408 ip->i_di.di_nlink = 2;
409 ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode);
410 ip->i_di.di_flags |= GFS2_DIF_JDATA;
411 ip->i_di.di_payload_format = GFS2_FORMAT_DE;
412 ip->i_di.di_entries = 2;
414 error = gfs2_meta_inode_buffer(ip, &dibh);
416 if (!gfs2_assert_withdraw(sdp, !error)) {
417 struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data;
418 struct gfs2_dirent *dent;
420 gfs2_dirent_alloc(ip, dibh, 1, &dent);
422 dent->de_inum = di->di_num; /* already GFS2 endian */
423 dent->de_hash = gfs2_disk_hash(".", 1);
424 dent->de_hash = cpu_to_be32(dent->de_hash);
425 dent->de_type = DT_DIR;
426 memcpy((char *) (dent + 1), ".", 1);
427 di->di_entries = cpu_to_be32(1);
429 gfs2_dirent_alloc(ip, dibh, 2, &dent);
431 gfs2_inum_out(&dip->i_num, (char *) &dent->de_inum);
432 dent->de_hash = gfs2_disk_hash("..", 2);
433 dent->de_hash = cpu_to_be32(dent->de_hash);
434 dent->de_type = DT_DIR;
435 memcpy((char *) (dent + 1), "..", 2);
437 gfs2_dinode_out(&ip->i_di, (char *)di);
442 error = gfs2_change_nlink(dip, +1);
443 gfs2_assert_withdraw(sdp, !error); /* dip already pinned */
446 if (dip->i_alloc.al_rgd)
447 gfs2_inplace_release(dip);
448 gfs2_quota_unlock(dip);
451 gfs2_glock_dq_uninit_m(2, ghs);
453 d_instantiate(dentry, inode);
454 mark_inode_dirty(inode);
460 * gfs2_rmdir - Remove a directory
461 * @dir: The parent directory of the directory to be removed
462 * @dentry: The dentry of the directory to remove
464 * Remove a directory. Call gfs2_rmdiri()
469 static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
471 struct gfs2_inode *dip = get_v2ip(dir);
472 struct gfs2_sbd *sdp = dip->i_sbd;
473 struct gfs2_inode *ip = get_v2ip(dentry->d_inode);
474 struct gfs2_unlinked *ul;
475 struct gfs2_holder ghs[2];
478 error = gfs2_unlinked_get(sdp, &ul);
482 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
483 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
485 error = gfs2_glock_nq_m(2, ghs);
489 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
493 if (ip->i_di.di_entries < 2) {
494 if (gfs2_consist_inode(ip))
495 gfs2_dinode_print(&ip->i_di);
499 if (ip->i_di.di_entries > 2) {
504 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + 3 * RES_LEAF +
509 error = gfs2_rmdiri(dip, &dentry->d_name, ip, ul);
514 gfs2_glock_dq_m(2, ghs);
517 gfs2_holder_uninit(ghs);
518 gfs2_holder_uninit(ghs + 1);
520 gfs2_unlinked_put(sdp, ul);
526 * gfs2_mknod - Make a special file
527 * @dir: The directory in which the special file will reside
528 * @dentry: The dentry of the special file
529 * @mode: The mode of the special file
530 * @rdev: The device specification of the special file
534 static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,
537 struct gfs2_inode *dip = get_v2ip(dir), *ip;
538 struct gfs2_sbd *sdp = dip->i_sbd;
539 struct gfs2_holder ghs[2];
541 struct buffer_head *dibh;
542 uint32_t major = 0, minor = 0;
545 switch (mode & S_IFMT) {
558 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
560 inode = gfs2_createi(ghs, &dentry->d_name, mode);
562 gfs2_holder_uninit(ghs);
563 return PTR_ERR(inode);
566 ip = get_gl2ip(ghs[1].gh_gl);
568 ip->i_di.di_major = major;
569 ip->i_di.di_minor = minor;
571 error = gfs2_meta_inode_buffer(ip, &dibh);
573 if (!gfs2_assert_withdraw(sdp, !error)) {
574 gfs2_dinode_out(&ip->i_di, dibh->b_data);
579 if (dip->i_alloc.al_rgd)
580 gfs2_inplace_release(dip);
581 gfs2_quota_unlock(dip);
584 gfs2_glock_dq_uninit_m(2, ghs);
586 d_instantiate(dentry, inode);
587 mark_inode_dirty(inode);
593 * gfs2_rename - Rename a file
594 * @odir: Parent directory of old file name
595 * @odentry: The old dentry of the file
596 * @ndir: Parent directory of new file name
597 * @ndentry: The new dentry of the file
602 static int gfs2_rename(struct inode *odir, struct dentry *odentry,
603 struct inode *ndir, struct dentry *ndentry)
605 struct gfs2_inode *odip = get_v2ip(odir);
606 struct gfs2_inode *ndip = get_v2ip(ndir);
607 struct gfs2_inode *ip = get_v2ip(odentry->d_inode);
608 struct gfs2_inode *nip = NULL;
609 struct gfs2_sbd *sdp = odip->i_sbd;
610 struct gfs2_unlinked *ul;
611 struct gfs2_holder ghs[4], r_gh;
618 if (ndentry->d_inode) {
619 nip = get_v2ip(ndentry->d_inode);
624 error = gfs2_unlinked_get(sdp, &ul);
628 /* Make sure we aren't trying to move a dirctory into it's subdir */
630 if (S_ISDIR(ip->i_di.di_mode) && odip != ndip) {
633 error = gfs2_glock_nq_init(sdp->sd_rename_gl,
639 error = gfs2_ok_to_move(ip, ndip);
644 gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
645 gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
646 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
650 gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
652 error = gfs2_glock_nq_m(num_gh, ghs);
656 /* Check out the old directory */
658 error = gfs2_unlink_ok(odip, &odentry->d_name, ip);
662 /* Check out the new directory */
665 error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip);
669 if (S_ISDIR(nip->i_di.di_mode)) {
670 if (nip->i_di.di_entries < 2) {
671 if (gfs2_consist_inode(nip))
672 gfs2_dinode_print(&nip->i_di);
676 if (nip->i_di.di_entries > 2) {
682 error = gfs2_repermission(ndir, MAY_WRITE | MAY_EXEC, NULL);
686 error = gfs2_dir_search(ndip, &ndentry->d_name, NULL, NULL);
698 if (!ndip->i_di.di_nlink) {
702 if (ndip->i_di.di_entries == (uint32_t)-1) {
706 if (S_ISDIR(ip->i_di.di_mode) &&
707 ndip->i_di.di_nlink == (uint32_t)-1) {
714 /* Check out the dir to be renamed */
717 error = gfs2_repermission(odentry->d_inode, MAY_WRITE, NULL);
722 error = gfs2_diradd_alloc_required(ndip, &ndentry->d_name,
727 if (alloc_required) {
728 struct gfs2_alloc *al = gfs2_alloc_get(ndip);
730 error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
734 error = gfs2_quota_check(ndip, ndip->i_di.di_uid,
739 al->al_requested = sdp->sd_max_dirres;
741 error = gfs2_inplace_reserve(ndip);
745 error = gfs2_trans_begin(sdp,
747 al->al_rgd->rd_ri.ri_length +
748 4 * RES_DINODE + 4 * RES_LEAF +
749 RES_UNLINKED + RES_STATFS +
754 error = gfs2_trans_begin(sdp, 4 * RES_DINODE +
761 /* Remove the target file, if it exists */
764 if (S_ISDIR(nip->i_di.di_mode))
765 error = gfs2_rmdiri(ndip, &ndentry->d_name, nip, ul);
767 error = gfs2_unlinki(ndip, &ndentry->d_name, nip, ul);
777 error = gfs2_change_nlink(ndip, +1);
780 error = gfs2_change_nlink(odip, -1);
784 error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR);
788 struct buffer_head *dibh;
789 error = gfs2_meta_inode_buffer(ip, &dibh);
792 ip->i_di.di_ctime = get_seconds();
793 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
794 gfs2_dinode_out(&ip->i_di, dibh->b_data);
798 error = gfs2_dir_del(odip, &odentry->d_name);
802 error = gfs2_dir_add(ndip, &ndentry->d_name, &ip->i_num,
803 IF2DT(ip->i_di.di_mode));
812 gfs2_inplace_release(ndip);
816 gfs2_quota_unlock(ndip);
820 gfs2_alloc_put(ndip);
823 gfs2_glock_dq_m(num_gh, ghs);
826 for (x = 0; x < num_gh; x++)
827 gfs2_holder_uninit(ghs + x);
831 gfs2_glock_dq_uninit(&r_gh);
834 gfs2_unlinked_put(sdp, ul);
840 * gfs2_readlink - Read the value of a symlink
841 * @dentry: the symlink
842 * @buf: the buffer to read the symlink data into
843 * @size: the size of the buffer
848 static int gfs2_readlink(struct dentry *dentry, char __user *user_buf,
851 struct gfs2_inode *ip = get_v2ip(dentry->d_inode);
852 char array[GFS2_FAST_NAME_SIZE], *buf = array;
853 unsigned int len = GFS2_FAST_NAME_SIZE;
856 error = gfs2_readlinki(ip, &buf, &len);
860 if (user_size > len - 1)
863 if (copy_to_user(user_buf, buf, user_size))
875 * gfs2_follow_link - Follow a symbolic link
876 * @dentry: The dentry of the link
877 * @nd: Data that we pass to vfs_follow_link()
879 * This can handle symlinks of any size. It is optimised for symlinks
880 * under GFS2_FAST_NAME_SIZE.
882 * Returns: 0 on success or error code
885 static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
887 struct gfs2_inode *ip = get_v2ip(dentry->d_inode);
888 char array[GFS2_FAST_NAME_SIZE], *buf = array;
889 unsigned int len = GFS2_FAST_NAME_SIZE;
892 error = gfs2_readlinki(ip, &buf, &len);
894 error = vfs_follow_link(nd, buf);
899 return ERR_PTR(error);
906 * @nd: passed from Linux VFS, ignored by us
911 static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
913 struct gfs2_inode *ip = get_v2ip(inode);
914 struct gfs2_holder i_gh;
917 if (ip->i_vn == ip->i_gl->gl_vn)
918 return generic_permission(inode, mask, gfs2_check_acl);
920 error = gfs2_glock_nq_init(ip->i_gl,
921 LM_ST_SHARED, LM_FLAG_ANY,
924 error = generic_permission(inode, mask, gfs2_check_acl_locked);
925 gfs2_glock_dq_uninit(&i_gh);
931 static int setattr_size(struct inode *inode, struct iattr *attr)
933 struct gfs2_inode *ip = get_v2ip(inode);
936 if (attr->ia_size != ip->i_di.di_size) {
937 error = vmtruncate(inode, attr->ia_size);
942 error = gfs2_truncatei(ip, attr->ia_size);
949 static int setattr_chown(struct inode *inode, struct iattr *attr)
951 struct gfs2_inode *ip = get_v2ip(inode);
952 struct gfs2_sbd *sdp = ip->i_sbd;
953 struct buffer_head *dibh;
954 uint32_t ouid, ogid, nuid, ngid;
957 ouid = ip->i_di.di_uid;
958 ogid = ip->i_di.di_gid;
962 if (!(attr->ia_valid & ATTR_UID) || ouid == nuid)
963 ouid = nuid = NO_QUOTA_CHANGE;
964 if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
965 ogid = ngid = NO_QUOTA_CHANGE;
969 error = gfs2_quota_lock(ip, nuid, ngid);
973 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
974 error = gfs2_quota_check(ip, nuid, ngid);
979 error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0);
983 error = gfs2_meta_inode_buffer(ip, &dibh);
987 error = inode_setattr(inode, attr);
988 gfs2_assert_warn(sdp, !error);
989 gfs2_inode_attr_out(ip);
991 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
992 gfs2_dinode_out(&ip->i_di, dibh->b_data);
995 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
996 gfs2_quota_change(ip, -ip->i_di.di_blocks,
998 gfs2_quota_change(ip, ip->i_di.di_blocks,
1003 gfs2_trans_end(sdp);
1006 gfs2_quota_unlock(ip);
1015 * gfs2_setattr - Change attributes on an inode
1016 * @dentry: The dentry which is changing
1017 * @attr: The structure describing the change
1019 * The VFS layer wants to change one or more of an inodes attributes. Write
1020 * that change out to disk.
1025 static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
1027 struct inode *inode = dentry->d_inode;
1028 struct gfs2_inode *ip = get_v2ip(inode);
1029 struct gfs2_holder i_gh;
1032 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
1037 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
1040 error = inode_change_ok(inode, attr);
1044 if (attr->ia_valid & ATTR_SIZE)
1045 error = setattr_size(inode, attr);
1046 else if (attr->ia_valid & (ATTR_UID | ATTR_GID))
1047 error = setattr_chown(inode, attr);
1048 else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode))
1049 error = gfs2_acl_chmod(ip, attr);
1051 error = gfs2_setattr_simple(ip, attr);
1054 gfs2_glock_dq_uninit(&i_gh);
1057 mark_inode_dirty(inode);
1063 * gfs2_getattr - Read out an inode's attributes
1065 * @dentry: The dentry to stat
1066 * @stat: The inode's stats
1071 static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
1074 struct inode *inode = dentry->d_inode;
1075 struct gfs2_inode *ip = get_v2ip(inode);
1076 struct gfs2_holder gh;
1079 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
1081 generic_fillattr(inode, stat);
1082 gfs2_glock_dq_uninit(&gh);
1088 static int gfs2_setxattr(struct dentry *dentry, const char *name,
1089 const void *data, size_t size, int flags)
1091 struct gfs2_inode *ip = get_v2ip(dentry->d_inode);
1092 struct gfs2_ea_request er;
1094 memset(&er, 0, sizeof(struct gfs2_ea_request));
1095 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1096 if (er.er_type == GFS2_EATYPE_UNUSED)
1098 er.er_data = (char *)data;
1099 er.er_name_len = strlen(er.er_name);
1100 er.er_data_len = size;
1101 er.er_flags = flags;
1103 gfs2_assert_warn(ip->i_sbd, !(er.er_flags & GFS2_ERF_MODE));
1105 return gfs2_ea_set(ip, &er);
1108 static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name,
1109 void *data, size_t size)
1111 struct gfs2_ea_request er;
1113 memset(&er, 0, sizeof(struct gfs2_ea_request));
1114 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1115 if (er.er_type == GFS2_EATYPE_UNUSED)
1118 er.er_name_len = strlen(er.er_name);
1119 er.er_data_len = size;
1121 return gfs2_ea_get(get_v2ip(dentry->d_inode), &er);
1124 static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
1126 struct gfs2_ea_request er;
1128 memset(&er, 0, sizeof(struct gfs2_ea_request));
1129 er.er_data = (size) ? buffer : NULL;
1130 er.er_data_len = size;
1132 return gfs2_ea_list(get_v2ip(dentry->d_inode), &er);
1135 static int gfs2_removexattr(struct dentry *dentry, const char *name)
1137 struct gfs2_ea_request er;
1139 memset(&er, 0, sizeof(struct gfs2_ea_request));
1140 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1141 if (er.er_type == GFS2_EATYPE_UNUSED)
1143 er.er_name_len = strlen(er.er_name);
1145 return gfs2_ea_remove(get_v2ip(dentry->d_inode), &er);
1148 struct inode_operations gfs2_file_iops = {
1149 .permission = gfs2_permission,
1150 .setattr = gfs2_setattr,
1151 .getattr = gfs2_getattr,
1152 .setxattr = gfs2_setxattr,
1153 .getxattr = gfs2_getxattr,
1154 .listxattr = gfs2_listxattr,
1155 .removexattr = gfs2_removexattr,
1158 struct inode_operations gfs2_dev_iops = {
1159 .permission = gfs2_permission,
1160 .setattr = gfs2_setattr,
1161 .getattr = gfs2_getattr,
1162 .setxattr = gfs2_setxattr,
1163 .getxattr = gfs2_getxattr,
1164 .listxattr = gfs2_listxattr,
1165 .removexattr = gfs2_removexattr,
1168 struct inode_operations gfs2_dir_iops = {
1169 .create = gfs2_create,
1170 .lookup = gfs2_lookup,
1172 .unlink = gfs2_unlink,
1173 .symlink = gfs2_symlink,
1174 .mkdir = gfs2_mkdir,
1175 .rmdir = gfs2_rmdir,
1176 .mknod = gfs2_mknod,
1177 .rename = gfs2_rename,
1178 .permission = gfs2_permission,
1179 .setattr = gfs2_setattr,
1180 .getattr = gfs2_getattr,
1181 .setxattr = gfs2_setxattr,
1182 .getxattr = gfs2_getxattr,
1183 .listxattr = gfs2_listxattr,
1184 .removexattr = gfs2_removexattr,
1187 struct inode_operations gfs2_symlink_iops = {
1188 .readlink = gfs2_readlink,
1189 .follow_link = gfs2_follow_link,
1190 .permission = gfs2_permission,
1191 .setattr = gfs2_setattr,
1192 .getattr = gfs2_getattr,
1193 .setxattr = gfs2_setxattr,
1194 .getxattr = gfs2_getxattr,
1195 .listxattr = gfs2_listxattr,
1196 .removexattr = gfs2_removexattr,