2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 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 <linux/gfs2_ondisk.h>
21 #include <linux/crc32.h>
22 #include <asm/uaccess.h>
25 #include "lm_interface.h"
35 #include "ops_dentry.h"
36 #include "ops_inode.h"
44 * gfs2_create - Create a file
45 * @dir: The directory in which to create the file
46 * @dentry: The dentry of the new file
47 * @mode: The mode of the new file
52 static int gfs2_create(struct inode *dir, struct dentry *dentry,
53 int mode, struct nameidata *nd)
55 struct gfs2_inode *dip = GFS2_I(dir);
56 struct gfs2_sbd *sdp = GFS2_SB(dir);
57 struct gfs2_holder ghs[2];
60 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
63 inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode);
66 if (dip->i_alloc.al_rgd)
67 gfs2_inplace_release(dip);
68 gfs2_quota_unlock(dip);
70 gfs2_glock_dq_uninit_m(2, ghs);
71 mark_inode_dirty(inode);
73 } else if (PTR_ERR(inode) != -EEXIST ||
74 (nd->intent.open.flags & O_EXCL)) {
75 gfs2_holder_uninit(ghs);
76 return PTR_ERR(inode);
79 inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
82 gfs2_holder_uninit(ghs);
85 gfs2_holder_uninit(ghs);
86 return PTR_ERR(inode);
91 d_instantiate(dentry, inode);
97 * gfs2_lookup - Look up a filename in a directory and return its inode
98 * @dir: The directory inode
99 * @dentry: The dentry of the new inode
100 * @nd: passed from Linux VFS, ignored by us
102 * Called by the VFS layer. Lock dir and call gfs2_lookupi()
107 static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
108 struct nameidata *nd)
110 struct inode *inode = NULL;
112 dentry->d_op = &gfs2_dops;
114 inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
115 if (inode && IS_ERR(inode))
116 return ERR_PTR(PTR_ERR(inode));
119 return d_splice_alias(inode, dentry);
120 d_add(dentry, inode);
126 * gfs2_link - Link to a file
127 * @old_dentry: The inode to link
128 * @dir: Add link to this directory
129 * @dentry: The name of the link
131 * Link the inode in "old_dentry" into the directory "dir" with the
137 static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
138 struct dentry *dentry)
140 struct gfs2_inode *dip = GFS2_I(dir);
141 struct gfs2_sbd *sdp = GFS2_SB(dir);
142 struct inode *inode = old_dentry->d_inode;
143 struct gfs2_inode *ip = GFS2_I(inode);
144 struct gfs2_holder ghs[2];
148 if (S_ISDIR(ip->i_di.di_mode))
151 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
152 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
154 error = gfs2_glock_nq_m(2, ghs);
158 error = permission(dir, MAY_WRITE | MAY_EXEC, NULL);
162 error = gfs2_dir_search(dir, &dentry->d_name, NULL, NULL);
173 if (!dip->i_di.di_nlink)
176 if (dip->i_di.di_entries == (uint32_t)-1)
179 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
182 if (!ip->i_di.di_nlink)
185 if (ip->i_di.di_nlink == (uint32_t)-1)
188 alloc_required = error = gfs2_diradd_alloc_required(dir, &dentry->d_name);
193 if (alloc_required) {
194 struct gfs2_alloc *al = gfs2_alloc_get(dip);
196 error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
200 error = gfs2_quota_check(dip, dip->i_di.di_uid,
205 al->al_requested = sdp->sd_max_dirres;
207 error = gfs2_inplace_reserve(dip);
211 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
212 al->al_rgd->rd_ri.ri_length +
213 2 * RES_DINODE + RES_STATFS +
218 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0);
223 error = gfs2_dir_add(dir, &dentry->d_name, &ip->i_num,
224 IF2DT(ip->i_di.di_mode));
228 error = gfs2_change_nlink(ip, +1);
235 gfs2_inplace_release(dip);
239 gfs2_quota_unlock(dip);
246 gfs2_glock_dq_m(2, ghs);
249 gfs2_holder_uninit(ghs);
250 gfs2_holder_uninit(ghs + 1);
253 d_instantiate(dentry, inode);
254 mark_inode_dirty(inode);
261 * gfs2_unlink - Unlink a file
262 * @dir: The inode of the directory containing the file to unlink
263 * @dentry: The file itself
265 * Unlink a file. Call gfs2_unlinki()
270 static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
272 struct gfs2_inode *dip = GFS2_I(dir);
273 struct gfs2_sbd *sdp = GFS2_SB(dir);
274 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
275 struct gfs2_holder ghs[2];
278 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
279 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
281 error = gfs2_glock_nq_m(2, ghs);
285 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
289 error = gfs2_trans_begin(sdp, 2*RES_DINODE + RES_LEAF + RES_RG_BIT, 0);
293 error = gfs2_dir_del(dip, &dentry->d_name);
297 error = gfs2_change_nlink(ip, -1);
302 gfs2_glock_dq_m(2, ghs);
304 gfs2_holder_uninit(ghs);
305 gfs2_holder_uninit(ghs + 1);
310 * gfs2_symlink - Create a symlink
311 * @dir: The directory to create the symlink in
312 * @dentry: The dentry to put the symlink in
313 * @symname: The thing which the link points to
318 static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
321 struct gfs2_inode *dip = GFS2_I(dir), *ip;
322 struct gfs2_sbd *sdp = GFS2_SB(dir);
323 struct gfs2_holder ghs[2];
325 struct buffer_head *dibh;
329 /* Must be stuffed with a null terminator for gfs2_follow_link() */
330 size = strlen(symname);
331 if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1)
332 return -ENAMETOOLONG;
334 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
336 inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO);
338 gfs2_holder_uninit(ghs);
339 return PTR_ERR(inode);
342 ip = ghs[1].gh_gl->gl_object;
344 ip->i_di.di_size = size;
346 error = gfs2_meta_inode_buffer(ip, &dibh);
348 if (!gfs2_assert_withdraw(sdp, !error)) {
349 gfs2_dinode_out(&ip->i_di, dibh->b_data);
350 memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname,
356 if (dip->i_alloc.al_rgd)
357 gfs2_inplace_release(dip);
358 gfs2_quota_unlock(dip);
361 gfs2_glock_dq_uninit_m(2, ghs);
363 d_instantiate(dentry, inode);
364 mark_inode_dirty(inode);
370 * gfs2_mkdir - Make a directory
371 * @dir: The parent directory of the new one
372 * @dentry: The dentry of the new directory
373 * @mode: The mode of the new directory
378 static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
380 struct gfs2_inode *dip = GFS2_I(dir), *ip;
381 struct gfs2_sbd *sdp = GFS2_SB(dir);
382 struct gfs2_holder ghs[2];
384 struct buffer_head *dibh;
387 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
389 inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode);
391 gfs2_holder_uninit(ghs);
392 return PTR_ERR(inode);
395 ip = ghs[1].gh_gl->gl_object;
397 ip->i_di.di_nlink = 2;
398 ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode);
399 ip->i_di.di_flags |= GFS2_DIF_JDATA;
400 ip->i_di.di_payload_format = GFS2_FORMAT_DE;
401 ip->i_di.di_entries = 2;
403 error = gfs2_meta_inode_buffer(ip, &dibh);
405 if (!gfs2_assert_withdraw(sdp, !error)) {
406 struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data;
407 struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1);
410 gfs2_str2qstr(&str, ".");
411 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
412 gfs2_qstr2dirent(&str, GFS2_DIRENT_SIZE(str.len), dent);
413 dent->de_inum = di->di_num; /* already GFS2 endian */
414 dent->de_type = DT_DIR;
415 di->di_entries = cpu_to_be32(1);
417 gfs2_str2qstr(&str, "..");
418 dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1));
419 gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent);
421 gfs2_inum_out(&dip->i_num, (char *) &dent->de_inum);
422 dent->de_type = DT_DIR;
424 gfs2_dinode_out(&ip->i_di, (char *)di);
429 error = gfs2_change_nlink(dip, +1);
430 gfs2_assert_withdraw(sdp, !error); /* dip already pinned */
433 if (dip->i_alloc.al_rgd)
434 gfs2_inplace_release(dip);
435 gfs2_quota_unlock(dip);
438 gfs2_glock_dq_uninit_m(2, ghs);
440 d_instantiate(dentry, inode);
441 mark_inode_dirty(inode);
447 * gfs2_rmdir - Remove a directory
448 * @dir: The parent directory of the directory to be removed
449 * @dentry: The dentry of the directory to remove
451 * Remove a directory. Call gfs2_rmdiri()
456 static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
458 struct gfs2_inode *dip = GFS2_I(dir);
459 struct gfs2_sbd *sdp = GFS2_SB(dir);
460 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
461 struct gfs2_holder ghs[2];
464 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
465 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
467 error = gfs2_glock_nq_m(2, ghs);
471 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
475 if (ip->i_di.di_entries < 2) {
476 if (gfs2_consist_inode(ip))
477 gfs2_dinode_print(&ip->i_di);
481 if (ip->i_di.di_entries > 2) {
486 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + 3 * RES_LEAF + RES_RG_BIT, 0);
490 error = gfs2_rmdiri(dip, &dentry->d_name, ip);
495 gfs2_glock_dq_m(2, ghs);
498 gfs2_holder_uninit(ghs);
499 gfs2_holder_uninit(ghs + 1);
505 * gfs2_mknod - Make a special file
506 * @dir: The directory in which the special file will reside
507 * @dentry: The dentry of the special file
508 * @mode: The mode of the special file
509 * @rdev: The device specification of the special file
513 static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,
516 struct gfs2_inode *dip = GFS2_I(dir), *ip;
517 struct gfs2_sbd *sdp = GFS2_SB(dir);
518 struct gfs2_holder ghs[2];
520 struct buffer_head *dibh;
521 uint32_t major = 0, minor = 0;
524 switch (mode & S_IFMT) {
537 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
539 inode = gfs2_createi(ghs, &dentry->d_name, mode);
541 gfs2_holder_uninit(ghs);
542 return PTR_ERR(inode);
545 ip = ghs[1].gh_gl->gl_object;
547 ip->i_di.di_major = major;
548 ip->i_di.di_minor = minor;
550 error = gfs2_meta_inode_buffer(ip, &dibh);
552 if (!gfs2_assert_withdraw(sdp, !error)) {
553 gfs2_dinode_out(&ip->i_di, dibh->b_data);
558 if (dip->i_alloc.al_rgd)
559 gfs2_inplace_release(dip);
560 gfs2_quota_unlock(dip);
563 gfs2_glock_dq_uninit_m(2, ghs);
565 d_instantiate(dentry, inode);
566 mark_inode_dirty(inode);
572 * gfs2_rename - Rename a file
573 * @odir: Parent directory of old file name
574 * @odentry: The old dentry of the file
575 * @ndir: Parent directory of new file name
576 * @ndentry: The new dentry of the file
581 static int gfs2_rename(struct inode *odir, struct dentry *odentry,
582 struct inode *ndir, struct dentry *ndentry)
584 struct gfs2_inode *odip = GFS2_I(odir);
585 struct gfs2_inode *ndip = GFS2_I(ndir);
586 struct gfs2_inode *ip = GFS2_I(odentry->d_inode);
587 struct gfs2_inode *nip = NULL;
588 struct gfs2_sbd *sdp = GFS2_SB(odir);
589 struct gfs2_holder ghs[4], r_gh;
596 if (ndentry->d_inode) {
597 nip = GFS2_I(ndentry->d_inode);
602 /* Make sure we aren't trying to move a dirctory into it's subdir */
604 if (S_ISDIR(ip->i_di.di_mode) && odip != ndip) {
607 error = gfs2_glock_nq_init(sdp->sd_rename_gl,
613 error = gfs2_ok_to_move(ip, ndip);
619 gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
621 gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
624 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
628 gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
632 error = gfs2_glock_nq_m(num_gh, ghs);
636 /* Check out the old directory */
638 error = gfs2_unlink_ok(odip, &odentry->d_name, ip);
642 /* Check out the new directory */
645 error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip);
649 if (S_ISDIR(nip->i_di.di_mode)) {
650 if (nip->i_di.di_entries < 2) {
651 if (gfs2_consist_inode(nip))
652 gfs2_dinode_print(&nip->i_di);
656 if (nip->i_di.di_entries > 2) {
662 error = permission(ndir, MAY_WRITE | MAY_EXEC, NULL);
666 error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL);
678 if (!ndip->i_di.di_nlink) {
682 if (ndip->i_di.di_entries == (uint32_t)-1) {
686 if (S_ISDIR(ip->i_di.di_mode) &&
687 ndip->i_di.di_nlink == (uint32_t)-1) {
694 /* Check out the dir to be renamed */
697 error = permission(odentry->d_inode, MAY_WRITE, NULL);
702 alloc_required = error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name);
707 if (alloc_required) {
708 struct gfs2_alloc *al = gfs2_alloc_get(ndip);
710 error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
714 error = gfs2_quota_check(ndip, ndip->i_di.di_uid,
719 al->al_requested = sdp->sd_max_dirres;
721 error = gfs2_inplace_reserve(ndip);
725 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
726 al->al_rgd->rd_ri.ri_length +
727 4 * RES_DINODE + 4 * RES_LEAF +
728 RES_STATFS + RES_QUOTA, 0);
732 error = gfs2_trans_begin(sdp, 4 * RES_DINODE +
738 /* Remove the target file, if it exists */
741 if (S_ISDIR(nip->i_di.di_mode))
742 error = gfs2_rmdiri(ndip, &ndentry->d_name, nip);
744 error = gfs2_dir_del(ndip, &ndentry->d_name);
747 error = gfs2_change_nlink(nip, -1);
755 gfs2_str2qstr(&name, "..");
757 error = gfs2_change_nlink(ndip, +1);
760 error = gfs2_change_nlink(odip, -1);
764 error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR);
768 struct buffer_head *dibh;
769 error = gfs2_meta_inode_buffer(ip, &dibh);
772 ip->i_di.di_ctime = get_seconds();
773 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
774 gfs2_dinode_out(&ip->i_di, dibh->b_data);
778 error = gfs2_dir_del(odip, &odentry->d_name);
782 error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num,
783 IF2DT(ip->i_di.di_mode));
791 gfs2_inplace_release(ndip);
794 gfs2_quota_unlock(ndip);
797 gfs2_alloc_put(ndip);
799 gfs2_glock_dq_m(num_gh, ghs);
801 for (x = 0; x < num_gh; x++)
802 gfs2_holder_uninit(ghs + x);
805 gfs2_glock_dq_uninit(&r_gh);
811 * gfs2_readlink - Read the value of a symlink
812 * @dentry: the symlink
813 * @buf: the buffer to read the symlink data into
814 * @size: the size of the buffer
819 static int gfs2_readlink(struct dentry *dentry, char __user *user_buf,
822 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
823 char array[GFS2_FAST_NAME_SIZE], *buf = array;
824 unsigned int len = GFS2_FAST_NAME_SIZE;
827 error = gfs2_readlinki(ip, &buf, &len);
831 if (user_size > len - 1)
834 if (copy_to_user(user_buf, buf, user_size))
846 * gfs2_follow_link - Follow a symbolic link
847 * @dentry: The dentry of the link
848 * @nd: Data that we pass to vfs_follow_link()
850 * This can handle symlinks of any size. It is optimised for symlinks
851 * under GFS2_FAST_NAME_SIZE.
853 * Returns: 0 on success or error code
856 static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
858 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
859 char array[GFS2_FAST_NAME_SIZE], *buf = array;
860 unsigned int len = GFS2_FAST_NAME_SIZE;
863 error = gfs2_readlinki(ip, &buf, &len);
865 error = vfs_follow_link(nd, buf);
870 return ERR_PTR(error);
877 * @nd: passed from Linux VFS, ignored by us
882 static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
884 struct gfs2_inode *ip = GFS2_I(inode);
885 struct gfs2_holder i_gh;
888 if (ip->i_vn == ip->i_gl->gl_vn)
889 return generic_permission(inode, mask, gfs2_check_acl);
891 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh);
893 error = generic_permission(inode, mask, gfs2_check_acl_locked);
894 gfs2_glock_dq_uninit(&i_gh);
900 static int setattr_size(struct inode *inode, struct iattr *attr)
902 struct gfs2_inode *ip = GFS2_I(inode);
905 if (attr->ia_size != ip->i_di.di_size) {
906 error = vmtruncate(inode, attr->ia_size);
911 error = gfs2_truncatei(ip, attr->ia_size);
918 static int setattr_chown(struct inode *inode, struct iattr *attr)
920 struct gfs2_inode *ip = GFS2_I(inode);
921 struct gfs2_sbd *sdp = GFS2_SB(inode);
922 struct buffer_head *dibh;
923 uint32_t ouid, ogid, nuid, ngid;
926 ouid = ip->i_di.di_uid;
927 ogid = ip->i_di.di_gid;
931 if (!(attr->ia_valid & ATTR_UID) || ouid == nuid)
932 ouid = nuid = NO_QUOTA_CHANGE;
933 if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
934 ogid = ngid = NO_QUOTA_CHANGE;
938 error = gfs2_quota_lock(ip, nuid, ngid);
942 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
943 error = gfs2_quota_check(ip, nuid, ngid);
948 error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0);
952 error = gfs2_meta_inode_buffer(ip, &dibh);
956 error = inode_setattr(inode, attr);
957 gfs2_assert_warn(sdp, !error);
958 gfs2_inode_attr_out(ip);
960 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
961 gfs2_dinode_out(&ip->i_di, dibh->b_data);
964 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
965 gfs2_quota_change(ip, -ip->i_di.di_blocks, ouid, ogid);
966 gfs2_quota_change(ip, ip->i_di.di_blocks, nuid, ngid);
973 gfs2_quota_unlock(ip);
982 * gfs2_setattr - Change attributes on an inode
983 * @dentry: The dentry which is changing
984 * @attr: The structure describing the change
986 * The VFS layer wants to change one or more of an inodes attributes. Write
987 * that change out to disk.
992 static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
994 struct inode *inode = dentry->d_inode;
995 struct gfs2_inode *ip = GFS2_I(inode);
996 struct gfs2_holder i_gh;
999 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
1004 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
1007 error = inode_change_ok(inode, attr);
1011 if (attr->ia_valid & ATTR_SIZE)
1012 error = setattr_size(inode, attr);
1013 else if (attr->ia_valid & (ATTR_UID | ATTR_GID))
1014 error = setattr_chown(inode, attr);
1015 else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode))
1016 error = gfs2_acl_chmod(ip, attr);
1018 error = gfs2_setattr_simple(ip, attr);
1021 gfs2_glock_dq_uninit(&i_gh);
1024 mark_inode_dirty(inode);
1030 * gfs2_getattr - Read out an inode's attributes
1032 * @dentry: The dentry to stat
1033 * @stat: The inode's stats
1038 static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
1041 struct inode *inode = dentry->d_inode;
1042 struct gfs2_inode *ip = GFS2_I(inode);
1043 struct gfs2_holder gh;
1046 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
1048 generic_fillattr(inode, stat);
1049 gfs2_glock_dq_uninit(&gh);
1055 static int gfs2_setxattr(struct dentry *dentry, const char *name,
1056 const void *data, size_t size, int flags)
1058 struct inode *inode = dentry->d_inode;
1059 struct gfs2_ea_request er;
1061 memset(&er, 0, sizeof(struct gfs2_ea_request));
1062 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1063 if (er.er_type == GFS2_EATYPE_UNUSED)
1065 er.er_data = (char *)data;
1066 er.er_name_len = strlen(er.er_name);
1067 er.er_data_len = size;
1068 er.er_flags = flags;
1070 gfs2_assert_warn(GFS2_SB(inode), !(er.er_flags & GFS2_ERF_MODE));
1072 return gfs2_ea_set(GFS2_I(inode), &er);
1075 static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name,
1076 void *data, size_t size)
1078 struct gfs2_ea_request er;
1080 memset(&er, 0, sizeof(struct gfs2_ea_request));
1081 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1082 if (er.er_type == GFS2_EATYPE_UNUSED)
1085 er.er_name_len = strlen(er.er_name);
1086 er.er_data_len = size;
1088 return gfs2_ea_get(GFS2_I(dentry->d_inode), &er);
1091 static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
1093 struct gfs2_ea_request er;
1095 memset(&er, 0, sizeof(struct gfs2_ea_request));
1096 er.er_data = (size) ? buffer : NULL;
1097 er.er_data_len = size;
1099 return gfs2_ea_list(GFS2_I(dentry->d_inode), &er);
1102 static int gfs2_removexattr(struct dentry *dentry, const char *name)
1104 struct gfs2_ea_request er;
1106 memset(&er, 0, sizeof(struct gfs2_ea_request));
1107 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1108 if (er.er_type == GFS2_EATYPE_UNUSED)
1110 er.er_name_len = strlen(er.er_name);
1112 return gfs2_ea_remove(GFS2_I(dentry->d_inode), &er);
1115 struct inode_operations gfs2_file_iops = {
1116 .permission = gfs2_permission,
1117 .setattr = gfs2_setattr,
1118 .getattr = gfs2_getattr,
1119 .setxattr = gfs2_setxattr,
1120 .getxattr = gfs2_getxattr,
1121 .listxattr = gfs2_listxattr,
1122 .removexattr = gfs2_removexattr,
1125 struct inode_operations gfs2_dev_iops = {
1126 .permission = gfs2_permission,
1127 .setattr = gfs2_setattr,
1128 .getattr = gfs2_getattr,
1129 .setxattr = gfs2_setxattr,
1130 .getxattr = gfs2_getxattr,
1131 .listxattr = gfs2_listxattr,
1132 .removexattr = gfs2_removexattr,
1135 struct inode_operations gfs2_dir_iops = {
1136 .create = gfs2_create,
1137 .lookup = gfs2_lookup,
1139 .unlink = gfs2_unlink,
1140 .symlink = gfs2_symlink,
1141 .mkdir = gfs2_mkdir,
1142 .rmdir = gfs2_rmdir,
1143 .mknod = gfs2_mknod,
1144 .rename = gfs2_rename,
1145 .permission = gfs2_permission,
1146 .setattr = gfs2_setattr,
1147 .getattr = gfs2_getattr,
1148 .setxattr = gfs2_setxattr,
1149 .getxattr = gfs2_getxattr,
1150 .listxattr = gfs2_listxattr,
1151 .removexattr = gfs2_removexattr,
1154 struct inode_operations gfs2_symlink_iops = {
1155 .readlink = gfs2_readlink,
1156 .follow_link = gfs2_follow_link,
1157 .permission = gfs2_permission,
1158 .setattr = gfs2_setattr,
1159 .getattr = gfs2_getattr,
1160 .setxattr = gfs2_setxattr,
1161 .getxattr = gfs2_getxattr,
1162 .listxattr = gfs2_listxattr,
1163 .removexattr = gfs2_removexattr,