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 <linux/gfs2_ondisk.h>
21 #include <asm/semaphore.h>
22 #include <asm/uaccess.h>
25 #include "lm_interface.h"
35 #include "ops_dentry.h"
36 #include "ops_inode.h"
45 * gfs2_create - Create a file
46 * @dir: The directory in which to create the file
47 * @dentry: The dentry of the new file
48 * @mode: The mode of the new file
53 static int gfs2_create(struct inode *dir, struct dentry *dentry,
54 int mode, struct nameidata *nd)
56 struct gfs2_inode *dip = dir->u.generic_ip;
57 struct gfs2_sbd *sdp = dip->i_sbd;
58 struct gfs2_holder ghs[2];
62 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
65 inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode);
68 if (dip->i_alloc.al_rgd)
69 gfs2_inplace_release(dip);
70 gfs2_quota_unlock(dip);
72 gfs2_glock_dq_uninit_m(2, ghs);
74 } else if (PTR_ERR(inode) != -EEXIST ||
75 (nd->intent.open.flags & O_EXCL)) {
76 gfs2_holder_uninit(ghs);
77 return PTR_ERR(inode);
80 inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
84 gfs2_holder_uninit(ghs);
87 gfs2_holder_uninit(ghs);
88 return PTR_ERR(inode);
93 d_instantiate(dentry, inode);
95 mark_inode_dirty(inode);
101 * gfs2_lookup - Look up a filename in a directory and return its inode
102 * @dir: The directory inode
103 * @dentry: The dentry of the new inode
104 * @nd: passed from Linux VFS, ignored by us
106 * Called by the VFS layer. Lock dir and call gfs2_lookupi()
111 static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
112 struct nameidata *nd)
114 struct inode *inode = NULL;
116 dentry->d_op = &gfs2_dops;
118 inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
119 if (inode && IS_ERR(inode))
120 return ERR_PTR(PTR_ERR(inode));
123 return d_splice_alias(inode, dentry);
124 d_add(dentry, inode);
130 * gfs2_link - Link to a file
131 * @old_dentry: The inode to link
132 * @dir: Add link to this directory
133 * @dentry: The name of the link
135 * Link the inode in "old_dentry" into the directory "dir" with the
141 static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
142 struct dentry *dentry)
144 struct gfs2_inode *dip = dir->u.generic_ip;
145 struct gfs2_sbd *sdp = dip->i_sbd;
146 struct inode *inode = old_dentry->d_inode;
147 struct gfs2_inode *ip = inode->u.generic_ip;
148 struct gfs2_holder ghs[2];
152 if (S_ISDIR(ip->i_di.di_mode))
155 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
156 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
158 error = gfs2_glock_nq_m(2, ghs);
162 error = gfs2_repermission(dir, MAY_WRITE | MAY_EXEC, NULL);
166 error = gfs2_dir_search(dir, &dentry->d_name, NULL, NULL);
177 if (!dip->i_di.di_nlink)
180 if (dip->i_di.di_entries == (uint32_t)-1)
183 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
186 if (!ip->i_di.di_nlink)
189 if (ip->i_di.di_nlink == (uint32_t)-1)
192 alloc_required = error = gfs2_diradd_alloc_required(dir, &dentry->d_name);
197 if (alloc_required) {
198 struct gfs2_alloc *al = gfs2_alloc_get(dip);
200 error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
204 error = gfs2_quota_check(dip, dip->i_di.di_uid,
209 al->al_requested = sdp->sd_max_dirres;
211 error = gfs2_inplace_reserve(dip);
215 error = gfs2_trans_begin(sdp,
217 al->al_rgd->rd_ri.ri_length +
218 2 * RES_DINODE + RES_STATFS +
223 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0);
228 error = gfs2_dir_add(dir, &dentry->d_name, &ip->i_num,
229 IF2DT(ip->i_di.di_mode));
233 error = gfs2_change_nlink(ip, +1);
240 gfs2_inplace_release(dip);
244 gfs2_quota_unlock(dip);
251 gfs2_glock_dq_m(2, ghs);
254 gfs2_holder_uninit(ghs);
255 gfs2_holder_uninit(ghs + 1);
258 atomic_inc(&inode->i_count);
259 d_instantiate(dentry, inode);
260 mark_inode_dirty(inode);
267 * gfs2_unlink - Unlink a file
268 * @dir: The inode of the directory containing the file to unlink
269 * @dentry: The file itself
271 * Unlink a file. Call gfs2_unlinki()
276 static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
278 struct gfs2_inode *dip = dir->u.generic_ip;
279 struct gfs2_sbd *sdp = dip->i_sbd;
280 struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
281 struct gfs2_unlinked *ul;
282 struct gfs2_holder ghs[2];
285 error = gfs2_unlinked_get(sdp, &ul);
289 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
290 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
292 error = gfs2_glock_nq_m(2, ghs);
296 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
300 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF +
305 error = gfs2_unlinki(dip, &dentry->d_name, ip,ul);
310 gfs2_glock_dq_m(2, ghs);
313 gfs2_holder_uninit(ghs);
314 gfs2_holder_uninit(ghs + 1);
316 gfs2_unlinked_put(sdp, ul);
322 * gfs2_symlink - Create a symlink
323 * @dir: The directory to create the symlink in
324 * @dentry: The dentry to put the symlink in
325 * @symname: The thing which the link points to
330 static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
333 struct gfs2_inode *dip = dir->u.generic_ip, *ip;
334 struct gfs2_sbd *sdp = dip->i_sbd;
335 struct gfs2_holder ghs[2];
337 struct buffer_head *dibh;
341 /* Must be stuffed with a null terminator for gfs2_follow_link() */
342 size = strlen(symname);
343 if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1)
344 return -ENAMETOOLONG;
346 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
348 inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO);
350 gfs2_holder_uninit(ghs);
351 return PTR_ERR(inode);
354 ip = ghs[1].gh_gl->gl_object;
356 ip->i_di.di_size = size;
358 error = gfs2_meta_inode_buffer(ip, &dibh);
360 if (!gfs2_assert_withdraw(sdp, !error)) {
361 gfs2_dinode_out(&ip->i_di, dibh->b_data);
362 memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname,
368 if (dip->i_alloc.al_rgd)
369 gfs2_inplace_release(dip);
370 gfs2_quota_unlock(dip);
373 gfs2_glock_dq_uninit_m(2, ghs);
375 d_instantiate(dentry, inode);
376 mark_inode_dirty(inode);
382 * gfs2_mkdir - Make a directory
383 * @dir: The parent directory of the new one
384 * @dentry: The dentry of the new directory
385 * @mode: The mode of the new directory
390 static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
392 struct gfs2_inode *dip = dir->u.generic_ip, *ip;
393 struct gfs2_sbd *sdp = dip->i_sbd;
394 struct gfs2_holder ghs[2];
396 struct buffer_head *dibh;
399 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
401 inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode);
403 gfs2_holder_uninit(ghs);
404 return PTR_ERR(inode);
407 ip = ghs[1].gh_gl->gl_object;
409 ip->i_di.di_nlink = 2;
410 ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode);
411 ip->i_di.di_flags |= GFS2_DIF_JDATA;
412 ip->i_di.di_payload_format = GFS2_FORMAT_DE;
413 ip->i_di.di_entries = 2;
415 error = gfs2_meta_inode_buffer(ip, &dibh);
417 if (!gfs2_assert_withdraw(sdp, !error)) {
418 struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data;
419 struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1);
420 struct qstr str = { .name = ".", .len = 1 };
421 str.hash = gfs2_disk_hash(str.name, str.len);
423 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
424 gfs2_qstr2dirent(&str, GFS2_DIRENT_SIZE(str.len), dent);
425 dent->de_inum = di->di_num; /* already GFS2 endian */
426 dent->de_type = DT_DIR;
427 di->di_entries = cpu_to_be32(1);
431 str.hash = gfs2_disk_hash(str.name, str.len);
432 dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1));
433 gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent);
435 gfs2_inum_out(&dip->i_num, (char *) &dent->de_inum);
436 dent->de_type = DT_DIR;
438 gfs2_dinode_out(&ip->i_di, (char *)di);
443 error = gfs2_change_nlink(dip, +1);
444 gfs2_assert_withdraw(sdp, !error); /* dip already pinned */
447 if (dip->i_alloc.al_rgd)
448 gfs2_inplace_release(dip);
449 gfs2_quota_unlock(dip);
452 gfs2_glock_dq_uninit_m(2, ghs);
454 d_instantiate(dentry, inode);
455 mark_inode_dirty(inode);
461 * gfs2_rmdir - Remove a directory
462 * @dir: The parent directory of the directory to be removed
463 * @dentry: The dentry of the directory to remove
465 * Remove a directory. Call gfs2_rmdiri()
470 static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
472 struct gfs2_inode *dip = dir->u.generic_ip;
473 struct gfs2_sbd *sdp = dip->i_sbd;
474 struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
475 struct gfs2_unlinked *ul;
476 struct gfs2_holder ghs[2];
479 error = gfs2_unlinked_get(sdp, &ul);
483 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
484 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
486 error = gfs2_glock_nq_m(2, ghs);
490 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
494 if (ip->i_di.di_entries < 2) {
495 if (gfs2_consist_inode(ip))
496 gfs2_dinode_print(&ip->i_di);
500 if (ip->i_di.di_entries > 2) {
505 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + 3 * RES_LEAF +
510 error = gfs2_rmdiri(dip, &dentry->d_name, ip, ul);
515 gfs2_glock_dq_m(2, ghs);
518 gfs2_holder_uninit(ghs);
519 gfs2_holder_uninit(ghs + 1);
521 gfs2_unlinked_put(sdp, ul);
527 * gfs2_mknod - Make a special file
528 * @dir: The directory in which the special file will reside
529 * @dentry: The dentry of the special file
530 * @mode: The mode of the special file
531 * @rdev: The device specification of the special file
535 static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,
538 struct gfs2_inode *dip = dir->u.generic_ip, *ip;
539 struct gfs2_sbd *sdp = dip->i_sbd;
540 struct gfs2_holder ghs[2];
542 struct buffer_head *dibh;
543 uint32_t major = 0, minor = 0;
546 switch (mode & S_IFMT) {
559 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
561 inode = gfs2_createi(ghs, &dentry->d_name, mode);
563 gfs2_holder_uninit(ghs);
564 return PTR_ERR(inode);
567 ip = ghs[1].gh_gl->gl_object;
569 ip->i_di.di_major = major;
570 ip->i_di.di_minor = minor;
572 error = gfs2_meta_inode_buffer(ip, &dibh);
574 if (!gfs2_assert_withdraw(sdp, !error)) {
575 gfs2_dinode_out(&ip->i_di, dibh->b_data);
580 if (dip->i_alloc.al_rgd)
581 gfs2_inplace_release(dip);
582 gfs2_quota_unlock(dip);
585 gfs2_glock_dq_uninit_m(2, ghs);
587 d_instantiate(dentry, inode);
588 mark_inode_dirty(inode);
594 * gfs2_rename - Rename a file
595 * @odir: Parent directory of old file name
596 * @odentry: The old dentry of the file
597 * @ndir: Parent directory of new file name
598 * @ndentry: The new dentry of the file
603 static int gfs2_rename(struct inode *odir, struct dentry *odentry,
604 struct inode *ndir, struct dentry *ndentry)
606 struct gfs2_inode *odip = odir->u.generic_ip;
607 struct gfs2_inode *ndip = ndir->u.generic_ip;
608 struct gfs2_inode *ip = odentry->d_inode->u.generic_ip;
609 struct gfs2_inode *nip = NULL;
610 struct gfs2_sbd *sdp = odip->i_sbd;
611 struct gfs2_unlinked *ul;
612 struct gfs2_holder ghs[4], r_gh;
619 if (ndentry->d_inode) {
620 nip = ndentry->d_inode->u.generic_ip;
625 error = gfs2_unlinked_get(sdp, &ul);
629 /* Make sure we aren't trying to move a dirctory into it's subdir */
631 if (S_ISDIR(ip->i_di.di_mode) && odip != ndip) {
634 error = gfs2_glock_nq_init(sdp->sd_rename_gl,
640 error = gfs2_ok_to_move(ip, ndip);
645 gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
646 gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
647 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
651 gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
653 error = gfs2_glock_nq_m(num_gh, ghs);
657 /* Check out the old directory */
659 error = gfs2_unlink_ok(odip, &odentry->d_name, ip);
663 /* Check out the new directory */
666 error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip);
670 if (S_ISDIR(nip->i_di.di_mode)) {
671 if (nip->i_di.di_entries < 2) {
672 if (gfs2_consist_inode(nip))
673 gfs2_dinode_print(&nip->i_di);
677 if (nip->i_di.di_entries > 2) {
683 error = gfs2_repermission(ndir, MAY_WRITE | MAY_EXEC, NULL);
687 error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL);
699 if (!ndip->i_di.di_nlink) {
703 if (ndip->i_di.di_entries == (uint32_t)-1) {
707 if (S_ISDIR(ip->i_di.di_mode) &&
708 ndip->i_di.di_nlink == (uint32_t)-1) {
715 /* Check out the dir to be renamed */
718 error = gfs2_repermission(odentry->d_inode, MAY_WRITE, NULL);
723 alloc_required = error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name);
728 if (alloc_required) {
729 struct gfs2_alloc *al = gfs2_alloc_get(ndip);
731 error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
735 error = gfs2_quota_check(ndip, ndip->i_di.di_uid,
740 al->al_requested = sdp->sd_max_dirres;
742 error = gfs2_inplace_reserve(ndip);
746 error = gfs2_trans_begin(sdp,
748 al->al_rgd->rd_ri.ri_length +
749 4 * RES_DINODE + 4 * RES_LEAF +
750 RES_UNLINKED + RES_STATFS +
755 error = gfs2_trans_begin(sdp, 4 * RES_DINODE +
762 /* Remove the target file, if it exists */
765 if (S_ISDIR(nip->i_di.di_mode))
766 error = gfs2_rmdiri(ndip, &ndentry->d_name, nip, ul);
768 error = gfs2_unlinki(ndip, &ndentry->d_name, nip, ul);
777 name.hash = gfs2_disk_hash(name.name, name.len);
779 error = gfs2_change_nlink(ndip, +1);
782 error = gfs2_change_nlink(odip, -1);
786 error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR);
790 struct buffer_head *dibh;
791 error = gfs2_meta_inode_buffer(ip, &dibh);
794 ip->i_di.di_ctime = get_seconds();
795 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
796 gfs2_dinode_out(&ip->i_di, dibh->b_data);
800 error = gfs2_dir_del(odip, &odentry->d_name);
804 error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num,
805 IF2DT(ip->i_di.di_mode));
814 gfs2_inplace_release(ndip);
818 gfs2_quota_unlock(ndip);
822 gfs2_alloc_put(ndip);
825 gfs2_glock_dq_m(num_gh, ghs);
828 for (x = 0; x < num_gh; x++)
829 gfs2_holder_uninit(ghs + x);
833 gfs2_glock_dq_uninit(&r_gh);
836 gfs2_unlinked_put(sdp, ul);
842 * gfs2_readlink - Read the value of a symlink
843 * @dentry: the symlink
844 * @buf: the buffer to read the symlink data into
845 * @size: the size of the buffer
850 static int gfs2_readlink(struct dentry *dentry, char __user *user_buf,
853 struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
854 char array[GFS2_FAST_NAME_SIZE], *buf = array;
855 unsigned int len = GFS2_FAST_NAME_SIZE;
858 error = gfs2_readlinki(ip, &buf, &len);
862 if (user_size > len - 1)
865 if (copy_to_user(user_buf, buf, user_size))
877 * gfs2_follow_link - Follow a symbolic link
878 * @dentry: The dentry of the link
879 * @nd: Data that we pass to vfs_follow_link()
881 * This can handle symlinks of any size. It is optimised for symlinks
882 * under GFS2_FAST_NAME_SIZE.
884 * Returns: 0 on success or error code
887 static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
889 struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
890 char array[GFS2_FAST_NAME_SIZE], *buf = array;
891 unsigned int len = GFS2_FAST_NAME_SIZE;
894 error = gfs2_readlinki(ip, &buf, &len);
896 error = vfs_follow_link(nd, buf);
901 return ERR_PTR(error);
908 * @nd: passed from Linux VFS, ignored by us
913 static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
915 struct gfs2_inode *ip = inode->u.generic_ip;
916 struct gfs2_holder i_gh;
919 if (ip->i_vn == ip->i_gl->gl_vn)
920 return generic_permission(inode, mask, gfs2_check_acl);
922 error = gfs2_glock_nq_init(ip->i_gl,
923 LM_ST_SHARED, LM_FLAG_ANY,
926 error = generic_permission(inode, mask, gfs2_check_acl_locked);
927 gfs2_glock_dq_uninit(&i_gh);
933 static int setattr_size(struct inode *inode, struct iattr *attr)
935 struct gfs2_inode *ip = inode->u.generic_ip;
938 if (attr->ia_size != ip->i_di.di_size) {
939 error = vmtruncate(inode, attr->ia_size);
944 error = gfs2_truncatei(ip, attr->ia_size);
951 static int setattr_chown(struct inode *inode, struct iattr *attr)
953 struct gfs2_inode *ip = inode->u.generic_ip;
954 struct gfs2_sbd *sdp = ip->i_sbd;
955 struct buffer_head *dibh;
956 uint32_t ouid, ogid, nuid, ngid;
959 ouid = ip->i_di.di_uid;
960 ogid = ip->i_di.di_gid;
964 if (!(attr->ia_valid & ATTR_UID) || ouid == nuid)
965 ouid = nuid = NO_QUOTA_CHANGE;
966 if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
967 ogid = ngid = NO_QUOTA_CHANGE;
971 error = gfs2_quota_lock(ip, nuid, ngid);
975 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
976 error = gfs2_quota_check(ip, nuid, ngid);
981 error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0);
985 error = gfs2_meta_inode_buffer(ip, &dibh);
989 error = inode_setattr(inode, attr);
990 gfs2_assert_warn(sdp, !error);
991 gfs2_inode_attr_out(ip);
993 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
994 gfs2_dinode_out(&ip->i_di, dibh->b_data);
997 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
998 gfs2_quota_change(ip, -ip->i_di.di_blocks,
1000 gfs2_quota_change(ip, ip->i_di.di_blocks,
1005 gfs2_trans_end(sdp);
1008 gfs2_quota_unlock(ip);
1017 * gfs2_setattr - Change attributes on an inode
1018 * @dentry: The dentry which is changing
1019 * @attr: The structure describing the change
1021 * The VFS layer wants to change one or more of an inodes attributes. Write
1022 * that change out to disk.
1027 static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
1029 struct inode *inode = dentry->d_inode;
1030 struct gfs2_inode *ip = inode->u.generic_ip;
1031 struct gfs2_holder i_gh;
1034 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
1039 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
1042 error = inode_change_ok(inode, attr);
1046 if (attr->ia_valid & ATTR_SIZE)
1047 error = setattr_size(inode, attr);
1048 else if (attr->ia_valid & (ATTR_UID | ATTR_GID))
1049 error = setattr_chown(inode, attr);
1050 else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode))
1051 error = gfs2_acl_chmod(ip, attr);
1053 error = gfs2_setattr_simple(ip, attr);
1056 gfs2_glock_dq_uninit(&i_gh);
1059 mark_inode_dirty(inode);
1065 * gfs2_getattr - Read out an inode's attributes
1067 * @dentry: The dentry to stat
1068 * @stat: The inode's stats
1073 static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
1076 struct inode *inode = dentry->d_inode;
1077 struct gfs2_inode *ip = inode->u.generic_ip;
1078 struct gfs2_holder gh;
1081 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
1083 generic_fillattr(inode, stat);
1084 gfs2_glock_dq_uninit(&gh);
1090 static int gfs2_setxattr(struct dentry *dentry, const char *name,
1091 const void *data, size_t size, int flags)
1093 struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
1094 struct gfs2_ea_request er;
1096 memset(&er, 0, sizeof(struct gfs2_ea_request));
1097 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1098 if (er.er_type == GFS2_EATYPE_UNUSED)
1100 er.er_data = (char *)data;
1101 er.er_name_len = strlen(er.er_name);
1102 er.er_data_len = size;
1103 er.er_flags = flags;
1105 gfs2_assert_warn(ip->i_sbd, !(er.er_flags & GFS2_ERF_MODE));
1107 return gfs2_ea_set(ip, &er);
1110 static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name,
1111 void *data, size_t size)
1113 struct gfs2_ea_request er;
1115 memset(&er, 0, sizeof(struct gfs2_ea_request));
1116 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1117 if (er.er_type == GFS2_EATYPE_UNUSED)
1120 er.er_name_len = strlen(er.er_name);
1121 er.er_data_len = size;
1123 return gfs2_ea_get(dentry->d_inode->u.generic_ip, &er);
1126 static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
1128 struct gfs2_ea_request er;
1130 memset(&er, 0, sizeof(struct gfs2_ea_request));
1131 er.er_data = (size) ? buffer : NULL;
1132 er.er_data_len = size;
1134 return gfs2_ea_list(dentry->d_inode->u.generic_ip, &er);
1137 static int gfs2_removexattr(struct dentry *dentry, const char *name)
1139 struct gfs2_ea_request er;
1141 memset(&er, 0, sizeof(struct gfs2_ea_request));
1142 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1143 if (er.er_type == GFS2_EATYPE_UNUSED)
1145 er.er_name_len = strlen(er.er_name);
1147 return gfs2_ea_remove(dentry->d_inode->u.generic_ip, &er);
1150 struct inode_operations gfs2_file_iops = {
1151 .permission = gfs2_permission,
1152 .setattr = gfs2_setattr,
1153 .getattr = gfs2_getattr,
1154 .setxattr = gfs2_setxattr,
1155 .getxattr = gfs2_getxattr,
1156 .listxattr = gfs2_listxattr,
1157 .removexattr = gfs2_removexattr,
1160 struct inode_operations gfs2_dev_iops = {
1161 .permission = gfs2_permission,
1162 .setattr = gfs2_setattr,
1163 .getattr = gfs2_getattr,
1164 .setxattr = gfs2_setxattr,
1165 .getxattr = gfs2_getxattr,
1166 .listxattr = gfs2_listxattr,
1167 .removexattr = gfs2_removexattr,
1170 struct inode_operations gfs2_dir_iops = {
1171 .create = gfs2_create,
1172 .lookup = gfs2_lookup,
1174 .unlink = gfs2_unlink,
1175 .symlink = gfs2_symlink,
1176 .mkdir = gfs2_mkdir,
1177 .rmdir = gfs2_rmdir,
1178 .mknod = gfs2_mknod,
1179 .rename = gfs2_rename,
1180 .permission = gfs2_permission,
1181 .setattr = gfs2_setattr,
1182 .getattr = gfs2_getattr,
1183 .setxattr = gfs2_setxattr,
1184 .getxattr = gfs2_getxattr,
1185 .listxattr = gfs2_listxattr,
1186 .removexattr = gfs2_removexattr,
1189 struct inode_operations gfs2_symlink_iops = {
1190 .readlink = gfs2_readlink,
1191 .follow_link = gfs2_follow_link,
1192 .permission = gfs2_permission,
1193 .setattr = gfs2_setattr,
1194 .getattr = gfs2_getattr,
1195 .setxattr = gfs2_setxattr,
1196 .getxattr = gfs2_getxattr,
1197 .listxattr = gfs2_listxattr,
1198 .removexattr = gfs2_removexattr,