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 atomic_inc(&inode->i_count);
254 d_instantiate(dentry, inode);
255 mark_inode_dirty(inode);
262 * gfs2_unlink - Unlink a file
263 * @dir: The inode of the directory containing the file to unlink
264 * @dentry: The file itself
266 * Unlink a file. Call gfs2_unlinki()
271 static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
273 struct gfs2_inode *dip = GFS2_I(dir);
274 struct gfs2_sbd *sdp = GFS2_SB(dir);
275 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
276 struct gfs2_holder ghs[2];
279 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
280 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
282 error = gfs2_glock_nq_m(2, ghs);
286 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
290 error = gfs2_trans_begin(sdp, 2*RES_DINODE + RES_LEAF + RES_RG_BIT, 0);
294 error = gfs2_dir_del(dip, &dentry->d_name);
298 error = gfs2_change_nlink(ip, -1);
303 gfs2_glock_dq_m(2, ghs);
305 gfs2_holder_uninit(ghs);
306 gfs2_holder_uninit(ghs + 1);
311 * gfs2_symlink - Create a symlink
312 * @dir: The directory to create the symlink in
313 * @dentry: The dentry to put the symlink in
314 * @symname: The thing which the link points to
319 static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
322 struct gfs2_inode *dip = GFS2_I(dir), *ip;
323 struct gfs2_sbd *sdp = GFS2_SB(dir);
324 struct gfs2_holder ghs[2];
326 struct buffer_head *dibh;
330 /* Must be stuffed with a null terminator for gfs2_follow_link() */
331 size = strlen(symname);
332 if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1)
333 return -ENAMETOOLONG;
335 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
337 inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO);
339 gfs2_holder_uninit(ghs);
340 return PTR_ERR(inode);
343 ip = ghs[1].gh_gl->gl_object;
345 ip->i_di.di_size = size;
347 error = gfs2_meta_inode_buffer(ip, &dibh);
349 if (!gfs2_assert_withdraw(sdp, !error)) {
350 gfs2_dinode_out(&ip->i_di, dibh->b_data);
351 memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname,
357 if (dip->i_alloc.al_rgd)
358 gfs2_inplace_release(dip);
359 gfs2_quota_unlock(dip);
362 gfs2_glock_dq_uninit_m(2, ghs);
364 d_instantiate(dentry, inode);
365 mark_inode_dirty(inode);
371 * gfs2_mkdir - Make a directory
372 * @dir: The parent directory of the new one
373 * @dentry: The dentry of the new directory
374 * @mode: The mode of the new directory
379 static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
381 struct gfs2_inode *dip = GFS2_I(dir), *ip;
382 struct gfs2_sbd *sdp = GFS2_SB(dir);
383 struct gfs2_holder ghs[2];
385 struct buffer_head *dibh;
388 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
390 inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode);
392 gfs2_holder_uninit(ghs);
393 return PTR_ERR(inode);
396 ip = ghs[1].gh_gl->gl_object;
398 ip->i_di.di_nlink = 2;
399 ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode);
400 ip->i_di.di_flags |= GFS2_DIF_JDATA;
401 ip->i_di.di_payload_format = GFS2_FORMAT_DE;
402 ip->i_di.di_entries = 2;
404 error = gfs2_meta_inode_buffer(ip, &dibh);
406 if (!gfs2_assert_withdraw(sdp, !error)) {
407 struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data;
408 struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1);
411 gfs2_str2qstr(&str, ".");
412 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
413 gfs2_qstr2dirent(&str, GFS2_DIRENT_SIZE(str.len), dent);
414 dent->de_inum = di->di_num; /* already GFS2 endian */
415 dent->de_type = DT_DIR;
416 di->di_entries = cpu_to_be32(1);
418 gfs2_str2qstr(&str, "..");
419 dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1));
420 gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent);
422 gfs2_inum_out(&dip->i_num, (char *) &dent->de_inum);
423 dent->de_type = DT_DIR;
425 gfs2_dinode_out(&ip->i_di, (char *)di);
430 error = gfs2_change_nlink(dip, +1);
431 gfs2_assert_withdraw(sdp, !error); /* dip already pinned */
434 if (dip->i_alloc.al_rgd)
435 gfs2_inplace_release(dip);
436 gfs2_quota_unlock(dip);
439 gfs2_glock_dq_uninit_m(2, ghs);
441 d_instantiate(dentry, inode);
442 mark_inode_dirty(inode);
448 * gfs2_rmdir - Remove a directory
449 * @dir: The parent directory of the directory to be removed
450 * @dentry: The dentry of the directory to remove
452 * Remove a directory. Call gfs2_rmdiri()
457 static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
459 struct gfs2_inode *dip = GFS2_I(dir);
460 struct gfs2_sbd *sdp = GFS2_SB(dir);
461 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
462 struct gfs2_holder ghs[2];
465 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
466 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
468 error = gfs2_glock_nq_m(2, ghs);
472 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
476 if (ip->i_di.di_entries < 2) {
477 if (gfs2_consist_inode(ip))
478 gfs2_dinode_print(&ip->i_di);
482 if (ip->i_di.di_entries > 2) {
487 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + 3 * RES_LEAF + RES_RG_BIT, 0);
491 error = gfs2_rmdiri(dip, &dentry->d_name, ip);
496 gfs2_glock_dq_m(2, ghs);
499 gfs2_holder_uninit(ghs);
500 gfs2_holder_uninit(ghs + 1);
506 * gfs2_mknod - Make a special file
507 * @dir: The directory in which the special file will reside
508 * @dentry: The dentry of the special file
509 * @mode: The mode of the special file
510 * @rdev: The device specification of the special file
514 static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,
517 struct gfs2_inode *dip = GFS2_I(dir), *ip;
518 struct gfs2_sbd *sdp = GFS2_SB(dir);
519 struct gfs2_holder ghs[2];
521 struct buffer_head *dibh;
522 uint32_t major = 0, minor = 0;
525 switch (mode & S_IFMT) {
538 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
540 inode = gfs2_createi(ghs, &dentry->d_name, mode);
542 gfs2_holder_uninit(ghs);
543 return PTR_ERR(inode);
546 ip = ghs[1].gh_gl->gl_object;
548 ip->i_di.di_major = major;
549 ip->i_di.di_minor = minor;
551 error = gfs2_meta_inode_buffer(ip, &dibh);
553 if (!gfs2_assert_withdraw(sdp, !error)) {
554 gfs2_dinode_out(&ip->i_di, dibh->b_data);
559 if (dip->i_alloc.al_rgd)
560 gfs2_inplace_release(dip);
561 gfs2_quota_unlock(dip);
564 gfs2_glock_dq_uninit_m(2, ghs);
566 d_instantiate(dentry, inode);
567 mark_inode_dirty(inode);
573 * gfs2_rename - Rename a file
574 * @odir: Parent directory of old file name
575 * @odentry: The old dentry of the file
576 * @ndir: Parent directory of new file name
577 * @ndentry: The new dentry of the file
582 static int gfs2_rename(struct inode *odir, struct dentry *odentry,
583 struct inode *ndir, struct dentry *ndentry)
585 struct gfs2_inode *odip = GFS2_I(odir);
586 struct gfs2_inode *ndip = GFS2_I(ndir);
587 struct gfs2_inode *ip = GFS2_I(odentry->d_inode);
588 struct gfs2_inode *nip = NULL;
589 struct gfs2_sbd *sdp = GFS2_SB(odir);
590 struct gfs2_holder ghs[4], r_gh;
597 if (ndentry->d_inode) {
598 nip = GFS2_I(ndentry->d_inode);
603 /* Make sure we aren't trying to move a dirctory into it's subdir */
605 if (S_ISDIR(ip->i_di.di_mode) && odip != ndip) {
608 error = gfs2_glock_nq_init(sdp->sd_rename_gl,
614 error = gfs2_ok_to_move(ip, ndip);
620 gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
622 gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
625 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
629 gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
633 error = gfs2_glock_nq_m(num_gh, ghs);
637 /* Check out the old directory */
639 error = gfs2_unlink_ok(odip, &odentry->d_name, ip);
643 /* Check out the new directory */
646 error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip);
650 if (S_ISDIR(nip->i_di.di_mode)) {
651 if (nip->i_di.di_entries < 2) {
652 if (gfs2_consist_inode(nip))
653 gfs2_dinode_print(&nip->i_di);
657 if (nip->i_di.di_entries > 2) {
663 error = permission(ndir, MAY_WRITE | MAY_EXEC, NULL);
667 error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL);
679 if (!ndip->i_di.di_nlink) {
683 if (ndip->i_di.di_entries == (uint32_t)-1) {
687 if (S_ISDIR(ip->i_di.di_mode) &&
688 ndip->i_di.di_nlink == (uint32_t)-1) {
695 /* Check out the dir to be renamed */
698 error = permission(odentry->d_inode, MAY_WRITE, NULL);
703 alloc_required = error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name);
708 if (alloc_required) {
709 struct gfs2_alloc *al = gfs2_alloc_get(ndip);
711 error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
715 error = gfs2_quota_check(ndip, ndip->i_di.di_uid,
720 al->al_requested = sdp->sd_max_dirres;
722 error = gfs2_inplace_reserve(ndip);
726 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
727 al->al_rgd->rd_ri.ri_length +
728 4 * RES_DINODE + 4 * RES_LEAF +
729 RES_STATFS + RES_QUOTA, 0);
733 error = gfs2_trans_begin(sdp, 4 * RES_DINODE +
739 /* Remove the target file, if it exists */
742 if (S_ISDIR(nip->i_di.di_mode))
743 error = gfs2_rmdiri(ndip, &ndentry->d_name, nip);
745 error = gfs2_dir_del(ndip, &ndentry->d_name);
748 error = gfs2_change_nlink(nip, -1);
756 gfs2_str2qstr(&name, "..");
758 error = gfs2_change_nlink(ndip, +1);
761 error = gfs2_change_nlink(odip, -1);
765 error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR);
769 struct buffer_head *dibh;
770 error = gfs2_meta_inode_buffer(ip, &dibh);
773 ip->i_di.di_ctime = get_seconds();
774 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
775 gfs2_dinode_out(&ip->i_di, dibh->b_data);
779 error = gfs2_dir_del(odip, &odentry->d_name);
783 error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num,
784 IF2DT(ip->i_di.di_mode));
792 gfs2_inplace_release(ndip);
795 gfs2_quota_unlock(ndip);
798 gfs2_alloc_put(ndip);
800 gfs2_glock_dq_m(num_gh, ghs);
802 for (x = 0; x < num_gh; x++)
803 gfs2_holder_uninit(ghs + x);
806 gfs2_glock_dq_uninit(&r_gh);
812 * gfs2_readlink - Read the value of a symlink
813 * @dentry: the symlink
814 * @buf: the buffer to read the symlink data into
815 * @size: the size of the buffer
820 static int gfs2_readlink(struct dentry *dentry, char __user *user_buf,
823 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
824 char array[GFS2_FAST_NAME_SIZE], *buf = array;
825 unsigned int len = GFS2_FAST_NAME_SIZE;
828 error = gfs2_readlinki(ip, &buf, &len);
832 if (user_size > len - 1)
835 if (copy_to_user(user_buf, buf, user_size))
847 * gfs2_follow_link - Follow a symbolic link
848 * @dentry: The dentry of the link
849 * @nd: Data that we pass to vfs_follow_link()
851 * This can handle symlinks of any size. It is optimised for symlinks
852 * under GFS2_FAST_NAME_SIZE.
854 * Returns: 0 on success or error code
857 static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
859 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
860 char array[GFS2_FAST_NAME_SIZE], *buf = array;
861 unsigned int len = GFS2_FAST_NAME_SIZE;
864 error = gfs2_readlinki(ip, &buf, &len);
866 error = vfs_follow_link(nd, buf);
871 return ERR_PTR(error);
878 * @nd: passed from Linux VFS, ignored by us
883 static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
885 struct gfs2_inode *ip = GFS2_I(inode);
886 struct gfs2_holder i_gh;
889 if (ip->i_vn == ip->i_gl->gl_vn)
890 return generic_permission(inode, mask, gfs2_check_acl);
892 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh);
894 error = generic_permission(inode, mask, gfs2_check_acl_locked);
895 gfs2_glock_dq_uninit(&i_gh);
901 static int setattr_size(struct inode *inode, struct iattr *attr)
903 struct gfs2_inode *ip = GFS2_I(inode);
906 if (attr->ia_size != ip->i_di.di_size) {
907 error = vmtruncate(inode, attr->ia_size);
912 error = gfs2_truncatei(ip, attr->ia_size);
919 static int setattr_chown(struct inode *inode, struct iattr *attr)
921 struct gfs2_inode *ip = GFS2_I(inode);
922 struct gfs2_sbd *sdp = GFS2_SB(inode);
923 struct buffer_head *dibh;
924 uint32_t ouid, ogid, nuid, ngid;
927 ouid = ip->i_di.di_uid;
928 ogid = ip->i_di.di_gid;
932 if (!(attr->ia_valid & ATTR_UID) || ouid == nuid)
933 ouid = nuid = NO_QUOTA_CHANGE;
934 if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
935 ogid = ngid = NO_QUOTA_CHANGE;
939 error = gfs2_quota_lock(ip, nuid, ngid);
943 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
944 error = gfs2_quota_check(ip, nuid, ngid);
949 error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0);
953 error = gfs2_meta_inode_buffer(ip, &dibh);
957 error = inode_setattr(inode, attr);
958 gfs2_assert_warn(sdp, !error);
959 gfs2_inode_attr_out(ip);
961 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
962 gfs2_dinode_out(&ip->i_di, dibh->b_data);
965 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
966 gfs2_quota_change(ip, -ip->i_di.di_blocks, ouid, ogid);
967 gfs2_quota_change(ip, ip->i_di.di_blocks, nuid, ngid);
974 gfs2_quota_unlock(ip);
983 * gfs2_setattr - Change attributes on an inode
984 * @dentry: The dentry which is changing
985 * @attr: The structure describing the change
987 * The VFS layer wants to change one or more of an inodes attributes. Write
988 * that change out to disk.
993 static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
995 struct inode *inode = dentry->d_inode;
996 struct gfs2_inode *ip = GFS2_I(inode);
997 struct gfs2_holder i_gh;
1000 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
1005 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
1008 error = inode_change_ok(inode, attr);
1012 if (attr->ia_valid & ATTR_SIZE)
1013 error = setattr_size(inode, attr);
1014 else if (attr->ia_valid & (ATTR_UID | ATTR_GID))
1015 error = setattr_chown(inode, attr);
1016 else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode))
1017 error = gfs2_acl_chmod(ip, attr);
1019 error = gfs2_setattr_simple(ip, attr);
1022 gfs2_glock_dq_uninit(&i_gh);
1025 mark_inode_dirty(inode);
1031 * gfs2_getattr - Read out an inode's attributes
1033 * @dentry: The dentry to stat
1034 * @stat: The inode's stats
1039 static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
1042 struct inode *inode = dentry->d_inode;
1043 struct gfs2_inode *ip = GFS2_I(inode);
1044 struct gfs2_holder gh;
1047 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
1049 generic_fillattr(inode, stat);
1050 gfs2_glock_dq_uninit(&gh);
1056 static int gfs2_setxattr(struct dentry *dentry, const char *name,
1057 const void *data, size_t size, int flags)
1059 struct inode *inode = dentry->d_inode;
1060 struct gfs2_ea_request er;
1062 memset(&er, 0, sizeof(struct gfs2_ea_request));
1063 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1064 if (er.er_type == GFS2_EATYPE_UNUSED)
1066 er.er_data = (char *)data;
1067 er.er_name_len = strlen(er.er_name);
1068 er.er_data_len = size;
1069 er.er_flags = flags;
1071 gfs2_assert_warn(GFS2_SB(inode), !(er.er_flags & GFS2_ERF_MODE));
1073 return gfs2_ea_set(GFS2_I(inode), &er);
1076 static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name,
1077 void *data, size_t size)
1079 struct gfs2_ea_request er;
1081 memset(&er, 0, sizeof(struct gfs2_ea_request));
1082 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1083 if (er.er_type == GFS2_EATYPE_UNUSED)
1086 er.er_name_len = strlen(er.er_name);
1087 er.er_data_len = size;
1089 return gfs2_ea_get(GFS2_I(dentry->d_inode), &er);
1092 static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
1094 struct gfs2_ea_request er;
1096 memset(&er, 0, sizeof(struct gfs2_ea_request));
1097 er.er_data = (size) ? buffer : NULL;
1098 er.er_data_len = size;
1100 return gfs2_ea_list(GFS2_I(dentry->d_inode), &er);
1103 static int gfs2_removexattr(struct dentry *dentry, const char *name)
1105 struct gfs2_ea_request er;
1107 memset(&er, 0, sizeof(struct gfs2_ea_request));
1108 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1109 if (er.er_type == GFS2_EATYPE_UNUSED)
1111 er.er_name_len = strlen(er.er_name);
1113 return gfs2_ea_remove(GFS2_I(dentry->d_inode), &er);
1116 struct inode_operations gfs2_file_iops = {
1117 .permission = gfs2_permission,
1118 .setattr = gfs2_setattr,
1119 .getattr = gfs2_getattr,
1120 .setxattr = gfs2_setxattr,
1121 .getxattr = gfs2_getxattr,
1122 .listxattr = gfs2_listxattr,
1123 .removexattr = gfs2_removexattr,
1126 struct inode_operations gfs2_dev_iops = {
1127 .permission = gfs2_permission,
1128 .setattr = gfs2_setattr,
1129 .getattr = gfs2_getattr,
1130 .setxattr = gfs2_setxattr,
1131 .getxattr = gfs2_getxattr,
1132 .listxattr = gfs2_listxattr,
1133 .removexattr = gfs2_removexattr,
1136 struct inode_operations gfs2_dir_iops = {
1137 .create = gfs2_create,
1138 .lookup = gfs2_lookup,
1140 .unlink = gfs2_unlink,
1141 .symlink = gfs2_symlink,
1142 .mkdir = gfs2_mkdir,
1143 .rmdir = gfs2_rmdir,
1144 .mknod = gfs2_mknod,
1145 .rename = gfs2_rename,
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_symlink_iops = {
1156 .readlink = gfs2_readlink,
1157 .follow_link = gfs2_follow_link,
1158 .permission = gfs2_permission,
1159 .setattr = gfs2_setattr,
1160 .getattr = gfs2_getattr,
1161 .setxattr = gfs2_setxattr,
1162 .getxattr = gfs2_getxattr,
1163 .listxattr = gfs2_listxattr,
1164 .removexattr = gfs2_removexattr,