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 <linux/crc32.h>
22 #include <asm/semaphore.h>
23 #include <asm/uaccess.h>
26 #include "lm_interface.h"
36 #include "ops_dentry.h"
37 #include "ops_inode.h"
46 * gfs2_create - Create a file
47 * @dir: The directory in which to create the file
48 * @dentry: The dentry of the new file
49 * @mode: The mode of the new file
54 static int gfs2_create(struct inode *dir, struct dentry *dentry,
55 int mode, struct nameidata *nd)
57 struct gfs2_inode *dip = dir->u.generic_ip;
58 struct gfs2_sbd *sdp = dip->i_sbd;
59 struct gfs2_holder ghs[2];
63 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
66 inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode);
69 if (dip->i_alloc.al_rgd)
70 gfs2_inplace_release(dip);
71 gfs2_quota_unlock(dip);
73 gfs2_glock_dq_uninit_m(2, ghs);
75 } else if (PTR_ERR(inode) != -EEXIST ||
76 (nd->intent.open.flags & O_EXCL)) {
77 gfs2_holder_uninit(ghs);
78 return PTR_ERR(inode);
81 inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
85 gfs2_holder_uninit(ghs);
88 gfs2_holder_uninit(ghs);
89 return PTR_ERR(inode);
94 d_instantiate(dentry, inode);
96 mark_inode_dirty(inode);
102 * gfs2_lookup - Look up a filename in a directory and return its inode
103 * @dir: The directory inode
104 * @dentry: The dentry of the new inode
105 * @nd: passed from Linux VFS, ignored by us
107 * Called by the VFS layer. Lock dir and call gfs2_lookupi()
112 static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
113 struct nameidata *nd)
115 struct inode *inode = NULL;
117 dentry->d_op = &gfs2_dops;
119 inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
120 if (inode && IS_ERR(inode))
121 return ERR_PTR(PTR_ERR(inode));
124 return d_splice_alias(inode, dentry);
125 d_add(dentry, inode);
131 * gfs2_link - Link to a file
132 * @old_dentry: The inode to link
133 * @dir: Add link to this directory
134 * @dentry: The name of the link
136 * Link the inode in "old_dentry" into the directory "dir" with the
142 static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
143 struct dentry *dentry)
145 struct gfs2_inode *dip = dir->u.generic_ip;
146 struct gfs2_sbd *sdp = dip->i_sbd;
147 struct inode *inode = old_dentry->d_inode;
148 struct gfs2_inode *ip = inode->u.generic_ip;
149 struct gfs2_holder ghs[2];
153 if (S_ISDIR(ip->i_di.di_mode))
156 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
157 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
159 error = gfs2_glock_nq_m(2, ghs);
163 error = gfs2_repermission(dir, MAY_WRITE | MAY_EXEC, NULL);
167 error = gfs2_dir_search(dir, &dentry->d_name, NULL, NULL);
178 if (!dip->i_di.di_nlink)
181 if (dip->i_di.di_entries == (uint32_t)-1)
184 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
187 if (!ip->i_di.di_nlink)
190 if (ip->i_di.di_nlink == (uint32_t)-1)
193 alloc_required = error = gfs2_diradd_alloc_required(dir, &dentry->d_name);
198 if (alloc_required) {
199 struct gfs2_alloc *al = gfs2_alloc_get(dip);
201 error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
205 error = gfs2_quota_check(dip, dip->i_di.di_uid,
210 al->al_requested = sdp->sd_max_dirres;
212 error = gfs2_inplace_reserve(dip);
216 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
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);
422 gfs2_str2qstr(&str, ".");
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);
429 gfs2_str2qstr(&str, "..");
430 dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1));
431 gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent);
433 gfs2_inum_out(&dip->i_num, (char *) &dent->de_inum);
434 dent->de_type = DT_DIR;
436 gfs2_dinode_out(&ip->i_di, (char *)di);
441 error = gfs2_change_nlink(dip, +1);
442 gfs2_assert_withdraw(sdp, !error); /* dip already pinned */
445 if (dip->i_alloc.al_rgd)
446 gfs2_inplace_release(dip);
447 gfs2_quota_unlock(dip);
450 gfs2_glock_dq_uninit_m(2, ghs);
452 d_instantiate(dentry, inode);
453 mark_inode_dirty(inode);
459 * gfs2_rmdir - Remove a directory
460 * @dir: The parent directory of the directory to be removed
461 * @dentry: The dentry of the directory to remove
463 * Remove a directory. Call gfs2_rmdiri()
468 static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
470 struct gfs2_inode *dip = dir->u.generic_ip;
471 struct gfs2_sbd *sdp = dip->i_sbd;
472 struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
473 struct gfs2_unlinked *ul;
474 struct gfs2_holder ghs[2];
477 error = gfs2_unlinked_get(sdp, &ul);
481 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
482 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
484 error = gfs2_glock_nq_m(2, ghs);
488 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
492 if (ip->i_di.di_entries < 2) {
493 if (gfs2_consist_inode(ip))
494 gfs2_dinode_print(&ip->i_di);
498 if (ip->i_di.di_entries > 2) {
503 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + 3 * RES_LEAF +
508 error = gfs2_rmdiri(dip, &dentry->d_name, ip, ul);
513 gfs2_glock_dq_m(2, ghs);
516 gfs2_holder_uninit(ghs);
517 gfs2_holder_uninit(ghs + 1);
519 gfs2_unlinked_put(sdp, ul);
525 * gfs2_mknod - Make a special file
526 * @dir: The directory in which the special file will reside
527 * @dentry: The dentry of the special file
528 * @mode: The mode of the special file
529 * @rdev: The device specification of the special file
533 static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,
536 struct gfs2_inode *dip = dir->u.generic_ip, *ip;
537 struct gfs2_sbd *sdp = dip->i_sbd;
538 struct gfs2_holder ghs[2];
540 struct buffer_head *dibh;
541 uint32_t major = 0, minor = 0;
544 switch (mode & S_IFMT) {
557 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
559 inode = gfs2_createi(ghs, &dentry->d_name, mode);
561 gfs2_holder_uninit(ghs);
562 return PTR_ERR(inode);
565 ip = ghs[1].gh_gl->gl_object;
567 ip->i_di.di_major = major;
568 ip->i_di.di_minor = minor;
570 error = gfs2_meta_inode_buffer(ip, &dibh);
572 if (!gfs2_assert_withdraw(sdp, !error)) {
573 gfs2_dinode_out(&ip->i_di, dibh->b_data);
578 if (dip->i_alloc.al_rgd)
579 gfs2_inplace_release(dip);
580 gfs2_quota_unlock(dip);
583 gfs2_glock_dq_uninit_m(2, ghs);
585 d_instantiate(dentry, inode);
586 mark_inode_dirty(inode);
592 * gfs2_rename - Rename a file
593 * @odir: Parent directory of old file name
594 * @odentry: The old dentry of the file
595 * @ndir: Parent directory of new file name
596 * @ndentry: The new dentry of the file
601 static int gfs2_rename(struct inode *odir, struct dentry *odentry,
602 struct inode *ndir, struct dentry *ndentry)
604 struct gfs2_inode *odip = odir->u.generic_ip;
605 struct gfs2_inode *ndip = ndir->u.generic_ip;
606 struct gfs2_inode *ip = odentry->d_inode->u.generic_ip;
607 struct gfs2_inode *nip = NULL;
608 struct gfs2_sbd *sdp = odip->i_sbd;
609 struct gfs2_unlinked *ul;
610 struct gfs2_holder ghs[4], r_gh;
617 if (ndentry->d_inode) {
618 nip = ndentry->d_inode->u.generic_ip;
623 error = gfs2_unlinked_get(sdp, &ul);
627 /* Make sure we aren't trying to move a dirctory into it's subdir */
629 if (S_ISDIR(ip->i_di.di_mode) && odip != ndip) {
632 error = gfs2_glock_nq_init(sdp->sd_rename_gl,
638 error = gfs2_ok_to_move(ip, ndip);
643 gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
644 gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
645 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 2);
649 gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++);
651 error = gfs2_glock_nq_m(num_gh, ghs);
655 /* Check out the old directory */
657 error = gfs2_unlink_ok(odip, &odentry->d_name, ip);
661 /* Check out the new directory */
664 error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip);
668 if (S_ISDIR(nip->i_di.di_mode)) {
669 if (nip->i_di.di_entries < 2) {
670 if (gfs2_consist_inode(nip))
671 gfs2_dinode_print(&nip->i_di);
675 if (nip->i_di.di_entries > 2) {
681 error = gfs2_repermission(ndir, MAY_WRITE | MAY_EXEC, NULL);
685 error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL);
697 if (!ndip->i_di.di_nlink) {
701 if (ndip->i_di.di_entries == (uint32_t)-1) {
705 if (S_ISDIR(ip->i_di.di_mode) &&
706 ndip->i_di.di_nlink == (uint32_t)-1) {
713 /* Check out the dir to be renamed */
716 error = gfs2_repermission(odentry->d_inode, MAY_WRITE, NULL);
721 alloc_required = error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name);
726 if (alloc_required) {
727 struct gfs2_alloc *al = gfs2_alloc_get(ndip);
729 error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
733 error = gfs2_quota_check(ndip, ndip->i_di.di_uid,
738 al->al_requested = sdp->sd_max_dirres;
740 error = gfs2_inplace_reserve(ndip);
744 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
745 al->al_rgd->rd_ri.ri_length +
746 4 * RES_DINODE + 4 * RES_LEAF +
747 RES_UNLINKED + RES_STATFS +
752 error = gfs2_trans_begin(sdp, 4 * RES_DINODE +
759 /* Remove the target file, if it exists */
762 if (S_ISDIR(nip->i_di.di_mode))
763 error = gfs2_rmdiri(ndip, &ndentry->d_name, nip, ul);
765 error = gfs2_unlinki(ndip, &ndentry->d_name, nip, ul);
772 gfs2_str2qstr(&name, "..");
774 error = gfs2_change_nlink(ndip, +1);
777 error = gfs2_change_nlink(odip, -1);
781 error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR);
785 struct buffer_head *dibh;
786 error = gfs2_meta_inode_buffer(ip, &dibh);
789 ip->i_di.di_ctime = get_seconds();
790 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
791 gfs2_dinode_out(&ip->i_di, dibh->b_data);
795 error = gfs2_dir_del(odip, &odentry->d_name);
799 error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num,
800 IF2DT(ip->i_di.di_mode));
809 gfs2_inplace_release(ndip);
813 gfs2_quota_unlock(ndip);
817 gfs2_alloc_put(ndip);
820 gfs2_glock_dq_m(num_gh, ghs);
823 for (x = 0; x < num_gh; x++)
824 gfs2_holder_uninit(ghs + x);
828 gfs2_glock_dq_uninit(&r_gh);
831 gfs2_unlinked_put(sdp, ul);
837 * gfs2_readlink - Read the value of a symlink
838 * @dentry: the symlink
839 * @buf: the buffer to read the symlink data into
840 * @size: the size of the buffer
845 static int gfs2_readlink(struct dentry *dentry, char __user *user_buf,
848 struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
849 char array[GFS2_FAST_NAME_SIZE], *buf = array;
850 unsigned int len = GFS2_FAST_NAME_SIZE;
853 error = gfs2_readlinki(ip, &buf, &len);
857 if (user_size > len - 1)
860 if (copy_to_user(user_buf, buf, user_size))
872 * gfs2_follow_link - Follow a symbolic link
873 * @dentry: The dentry of the link
874 * @nd: Data that we pass to vfs_follow_link()
876 * This can handle symlinks of any size. It is optimised for symlinks
877 * under GFS2_FAST_NAME_SIZE.
879 * Returns: 0 on success or error code
882 static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
884 struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
885 char array[GFS2_FAST_NAME_SIZE], *buf = array;
886 unsigned int len = GFS2_FAST_NAME_SIZE;
889 error = gfs2_readlinki(ip, &buf, &len);
891 error = vfs_follow_link(nd, buf);
896 return ERR_PTR(error);
903 * @nd: passed from Linux VFS, ignored by us
908 static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
910 struct gfs2_inode *ip = inode->u.generic_ip;
911 struct gfs2_holder i_gh;
914 if (ip->i_vn == ip->i_gl->gl_vn)
915 return generic_permission(inode, mask, gfs2_check_acl);
917 error = gfs2_glock_nq_init(ip->i_gl,
918 LM_ST_SHARED, LM_FLAG_ANY,
921 error = generic_permission(inode, mask, gfs2_check_acl_locked);
922 gfs2_glock_dq_uninit(&i_gh);
928 static int setattr_size(struct inode *inode, struct iattr *attr)
930 struct gfs2_inode *ip = inode->u.generic_ip;
933 if (attr->ia_size != ip->i_di.di_size) {
934 error = vmtruncate(inode, attr->ia_size);
939 error = gfs2_truncatei(ip, attr->ia_size);
946 static int setattr_chown(struct inode *inode, struct iattr *attr)
948 struct gfs2_inode *ip = inode->u.generic_ip;
949 struct gfs2_sbd *sdp = ip->i_sbd;
950 struct buffer_head *dibh;
951 uint32_t ouid, ogid, nuid, ngid;
954 ouid = ip->i_di.di_uid;
955 ogid = ip->i_di.di_gid;
959 if (!(attr->ia_valid & ATTR_UID) || ouid == nuid)
960 ouid = nuid = NO_QUOTA_CHANGE;
961 if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
962 ogid = ngid = NO_QUOTA_CHANGE;
966 error = gfs2_quota_lock(ip, nuid, ngid);
970 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
971 error = gfs2_quota_check(ip, nuid, ngid);
976 error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0);
980 error = gfs2_meta_inode_buffer(ip, &dibh);
984 error = inode_setattr(inode, attr);
985 gfs2_assert_warn(sdp, !error);
986 gfs2_inode_attr_out(ip);
988 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
989 gfs2_dinode_out(&ip->i_di, dibh->b_data);
992 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
993 gfs2_quota_change(ip, -ip->i_di.di_blocks,
995 gfs2_quota_change(ip, ip->i_di.di_blocks,
1000 gfs2_trans_end(sdp);
1003 gfs2_quota_unlock(ip);
1012 * gfs2_setattr - Change attributes on an inode
1013 * @dentry: The dentry which is changing
1014 * @attr: The structure describing the change
1016 * The VFS layer wants to change one or more of an inodes attributes. Write
1017 * that change out to disk.
1022 static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
1024 struct inode *inode = dentry->d_inode;
1025 struct gfs2_inode *ip = inode->u.generic_ip;
1026 struct gfs2_holder i_gh;
1029 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
1034 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
1037 error = inode_change_ok(inode, attr);
1041 if (attr->ia_valid & ATTR_SIZE)
1042 error = setattr_size(inode, attr);
1043 else if (attr->ia_valid & (ATTR_UID | ATTR_GID))
1044 error = setattr_chown(inode, attr);
1045 else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode))
1046 error = gfs2_acl_chmod(ip, attr);
1048 error = gfs2_setattr_simple(ip, attr);
1051 gfs2_glock_dq_uninit(&i_gh);
1054 mark_inode_dirty(inode);
1060 * gfs2_getattr - Read out an inode's attributes
1062 * @dentry: The dentry to stat
1063 * @stat: The inode's stats
1068 static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
1071 struct inode *inode = dentry->d_inode;
1072 struct gfs2_inode *ip = inode->u.generic_ip;
1073 struct gfs2_holder gh;
1076 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
1078 generic_fillattr(inode, stat);
1079 gfs2_glock_dq_uninit(&gh);
1085 static int gfs2_setxattr(struct dentry *dentry, const char *name,
1086 const void *data, size_t size, int flags)
1088 struct gfs2_inode *ip = dentry->d_inode->u.generic_ip;
1089 struct gfs2_ea_request er;
1091 memset(&er, 0, sizeof(struct gfs2_ea_request));
1092 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1093 if (er.er_type == GFS2_EATYPE_UNUSED)
1095 er.er_data = (char *)data;
1096 er.er_name_len = strlen(er.er_name);
1097 er.er_data_len = size;
1098 er.er_flags = flags;
1100 gfs2_assert_warn(ip->i_sbd, !(er.er_flags & GFS2_ERF_MODE));
1102 return gfs2_ea_set(ip, &er);
1105 static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name,
1106 void *data, size_t size)
1108 struct gfs2_ea_request er;
1110 memset(&er, 0, sizeof(struct gfs2_ea_request));
1111 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1112 if (er.er_type == GFS2_EATYPE_UNUSED)
1115 er.er_name_len = strlen(er.er_name);
1116 er.er_data_len = size;
1118 return gfs2_ea_get(dentry->d_inode->u.generic_ip, &er);
1121 static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
1123 struct gfs2_ea_request er;
1125 memset(&er, 0, sizeof(struct gfs2_ea_request));
1126 er.er_data = (size) ? buffer : NULL;
1127 er.er_data_len = size;
1129 return gfs2_ea_list(dentry->d_inode->u.generic_ip, &er);
1132 static int gfs2_removexattr(struct dentry *dentry, const char *name)
1134 struct gfs2_ea_request er;
1136 memset(&er, 0, sizeof(struct gfs2_ea_request));
1137 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1138 if (er.er_type == GFS2_EATYPE_UNUSED)
1140 er.er_name_len = strlen(er.er_name);
1142 return gfs2_ea_remove(dentry->d_inode->u.generic_ip, &er);
1145 struct inode_operations gfs2_file_iops = {
1146 .permission = gfs2_permission,
1147 .setattr = gfs2_setattr,
1148 .getattr = gfs2_getattr,
1149 .setxattr = gfs2_setxattr,
1150 .getxattr = gfs2_getxattr,
1151 .listxattr = gfs2_listxattr,
1152 .removexattr = gfs2_removexattr,
1155 struct inode_operations gfs2_dev_iops = {
1156 .permission = gfs2_permission,
1157 .setattr = gfs2_setattr,
1158 .getattr = gfs2_getattr,
1159 .setxattr = gfs2_setxattr,
1160 .getxattr = gfs2_getxattr,
1161 .listxattr = gfs2_listxattr,
1162 .removexattr = gfs2_removexattr,
1165 struct inode_operations gfs2_dir_iops = {
1166 .create = gfs2_create,
1167 .lookup = gfs2_lookup,
1169 .unlink = gfs2_unlink,
1170 .symlink = gfs2_symlink,
1171 .mkdir = gfs2_mkdir,
1172 .rmdir = gfs2_rmdir,
1173 .mknod = gfs2_mknod,
1174 .rename = gfs2_rename,
1175 .permission = gfs2_permission,
1176 .setattr = gfs2_setattr,
1177 .getattr = gfs2_getattr,
1178 .setxattr = gfs2_setxattr,
1179 .getxattr = gfs2_getxattr,
1180 .listxattr = gfs2_listxattr,
1181 .removexattr = gfs2_removexattr,
1184 struct inode_operations gfs2_symlink_iops = {
1185 .readlink = gfs2_readlink,
1186 .follow_link = gfs2_follow_link,
1187 .permission = gfs2_permission,
1188 .setattr = gfs2_setattr,
1189 .getattr = gfs2_getattr,
1190 .setxattr = gfs2_setxattr,
1191 .getxattr = gfs2_getxattr,
1192 .listxattr = gfs2_listxattr,
1193 .removexattr = gfs2_removexattr,