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 version 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 <linux/lm_interface.h>
23 #include <asm/uaccess.h>
35 #include "ops_dentry.h"
36 #include "ops_inode.h"
43 * gfs2_create - Create a file
44 * @dir: The directory in which to create the file
45 * @dentry: The dentry of the new file
46 * @mode: The mode of the new file
51 static int gfs2_create(struct inode *dir, struct dentry *dentry,
52 int mode, struct nameidata *nd)
54 struct gfs2_inode *dip = GFS2_I(dir);
55 struct gfs2_sbd *sdp = GFS2_SB(dir);
56 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, 0);
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);
70 mark_inode_dirty(inode);
72 } else if (PTR_ERR(inode) != -EEXIST ||
73 (nd->intent.open.flags & O_EXCL)) {
74 gfs2_holder_uninit(ghs);
75 return PTR_ERR(inode);
78 inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
81 gfs2_holder_uninit(ghs);
84 gfs2_holder_uninit(ghs);
85 return PTR_ERR(inode);
90 d_instantiate(dentry, 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 inode *inode = NULL;
111 dentry->d_op = &gfs2_dops;
113 inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
114 if (inode && IS_ERR(inode))
115 return ERR_PTR(PTR_ERR(inode));
118 return d_splice_alias(inode, dentry);
119 d_add(dentry, inode);
125 * gfs2_link - Link to a file
126 * @old_dentry: The inode to link
127 * @dir: Add link to this directory
128 * @dentry: The name of the link
130 * Link the inode in "old_dentry" into the directory "dir" with the
136 static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
137 struct dentry *dentry)
139 struct gfs2_inode *dip = GFS2_I(dir);
140 struct gfs2_sbd *sdp = GFS2_SB(dir);
141 struct inode *inode = old_dentry->d_inode;
142 struct gfs2_inode *ip = GFS2_I(inode);
143 struct gfs2_holder ghs[2];
147 if (S_ISDIR(ip->i_di.di_mode))
150 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
151 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
153 error = gfs2_glock_nq_m(2, ghs);
157 error = permission(dir, MAY_WRITE | MAY_EXEC, NULL);
161 error = gfs2_dir_search(dir, &dentry->d_name, NULL, NULL);
172 if (!dip->i_di.di_nlink)
175 if (dip->i_di.di_entries == (u32)-1)
178 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
181 if (!ip->i_di.di_nlink)
184 if (ip->i_di.di_nlink == (u32)-1)
187 alloc_required = error = gfs2_diradd_alloc_required(dir, &dentry->d_name);
192 if (alloc_required) {
193 struct gfs2_alloc *al = gfs2_alloc_get(dip);
195 error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
199 error = gfs2_quota_check(dip, dip->i_di.di_uid,
204 al->al_requested = sdp->sd_max_dirres;
206 error = gfs2_inplace_reserve(dip);
210 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
211 al->al_rgd->rd_ri.ri_length +
212 2 * RES_DINODE + RES_STATFS +
217 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0);
222 error = gfs2_dir_add(dir, &dentry->d_name, &ip->i_num,
223 IF2DT(ip->i_di.di_mode));
227 error = gfs2_change_nlink(ip, +1);
233 gfs2_inplace_release(dip);
236 gfs2_quota_unlock(dip);
241 gfs2_glock_dq_m(2, ghs);
243 gfs2_holder_uninit(ghs);
244 gfs2_holder_uninit(ghs + 1);
246 atomic_inc(&inode->i_count);
247 d_instantiate(dentry, inode);
248 mark_inode_dirty(inode);
254 * gfs2_unlink - Unlink a file
255 * @dir: The inode of the directory containing the file to unlink
256 * @dentry: The file itself
258 * Unlink a file. Call gfs2_unlinki()
263 static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
265 struct gfs2_inode *dip = GFS2_I(dir);
266 struct gfs2_sbd *sdp = GFS2_SB(dir);
267 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
268 struct gfs2_holder ghs[2];
271 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
272 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
274 error = gfs2_glock_nq_m(2, ghs);
278 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
282 error = gfs2_trans_begin(sdp, 2*RES_DINODE + RES_LEAF + RES_RG_BIT, 0);
286 error = gfs2_dir_del(dip, &dentry->d_name);
290 error = gfs2_change_nlink(ip, -1);
295 gfs2_glock_dq_m(2, ghs);
297 gfs2_holder_uninit(ghs);
298 gfs2_holder_uninit(ghs + 1);
303 * gfs2_symlink - Create a symlink
304 * @dir: The directory to create the symlink in
305 * @dentry: The dentry to put the symlink in
306 * @symname: The thing which the link points to
311 static int gfs2_symlink(struct inode *dir, struct dentry *dentry,
314 struct gfs2_inode *dip = GFS2_I(dir), *ip;
315 struct gfs2_sbd *sdp = GFS2_SB(dir);
316 struct gfs2_holder ghs[2];
318 struct buffer_head *dibh;
322 /* Must be stuffed with a null terminator for gfs2_follow_link() */
323 size = strlen(symname);
324 if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1)
325 return -ENAMETOOLONG;
327 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
329 inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO, 0);
331 gfs2_holder_uninit(ghs);
332 return PTR_ERR(inode);
335 ip = ghs[1].gh_gl->gl_object;
337 ip->i_di.di_size = size;
339 error = gfs2_meta_inode_buffer(ip, &dibh);
341 if (!gfs2_assert_withdraw(sdp, !error)) {
342 gfs2_dinode_out(ip, dibh->b_data);
343 memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname,
349 if (dip->i_alloc.al_rgd)
350 gfs2_inplace_release(dip);
351 gfs2_quota_unlock(dip);
354 gfs2_glock_dq_uninit_m(2, ghs);
356 d_instantiate(dentry, inode);
357 mark_inode_dirty(inode);
363 * gfs2_mkdir - Make a directory
364 * @dir: The parent directory of the new one
365 * @dentry: The dentry of the new directory
366 * @mode: The mode of the new directory
371 static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)
373 struct gfs2_inode *dip = GFS2_I(dir), *ip;
374 struct gfs2_sbd *sdp = GFS2_SB(dir);
375 struct gfs2_holder ghs[2];
377 struct buffer_head *dibh;
380 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
382 inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode, 0);
384 gfs2_holder_uninit(ghs);
385 return PTR_ERR(inode);
388 ip = ghs[1].gh_gl->gl_object;
390 ip->i_di.di_nlink = 2;
391 ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode);
392 ip->i_di.di_flags |= GFS2_DIF_JDATA;
393 ip->i_di.di_payload_format = GFS2_FORMAT_DE;
394 ip->i_di.di_entries = 2;
396 error = gfs2_meta_inode_buffer(ip, &dibh);
398 if (!gfs2_assert_withdraw(sdp, !error)) {
399 struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data;
400 struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1);
403 gfs2_str2qstr(&str, ".");
404 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
405 gfs2_qstr2dirent(&str, GFS2_DIRENT_SIZE(str.len), dent);
406 dent->de_inum = di->di_num; /* already GFS2 endian */
407 dent->de_type = cpu_to_be16(DT_DIR);
408 di->di_entries = cpu_to_be32(1);
410 gfs2_str2qstr(&str, "..");
411 dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1));
412 gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent);
414 gfs2_inum_out(&dip->i_num, &dent->de_inum);
415 dent->de_type = cpu_to_be16(DT_DIR);
417 gfs2_dinode_out(ip, di);
422 error = gfs2_change_nlink(dip, +1);
423 gfs2_assert_withdraw(sdp, !error); /* dip already pinned */
426 if (dip->i_alloc.al_rgd)
427 gfs2_inplace_release(dip);
428 gfs2_quota_unlock(dip);
431 gfs2_glock_dq_uninit_m(2, ghs);
433 d_instantiate(dentry, inode);
434 mark_inode_dirty(inode);
440 * gfs2_rmdir - Remove a directory
441 * @dir: The parent directory of the directory to be removed
442 * @dentry: The dentry of the directory to remove
444 * Remove a directory. Call gfs2_rmdiri()
449 static int gfs2_rmdir(struct inode *dir, struct dentry *dentry)
451 struct gfs2_inode *dip = GFS2_I(dir);
452 struct gfs2_sbd *sdp = GFS2_SB(dir);
453 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
454 struct gfs2_holder ghs[2];
457 gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
458 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);
460 error = gfs2_glock_nq_m(2, ghs);
464 error = gfs2_unlink_ok(dip, &dentry->d_name, ip);
468 if (ip->i_di.di_entries < 2) {
469 if (gfs2_consist_inode(ip))
470 gfs2_dinode_print(ip);
474 if (ip->i_di.di_entries > 2) {
479 error = gfs2_trans_begin(sdp, 2 * RES_DINODE + 3 * RES_LEAF + RES_RG_BIT, 0);
483 error = gfs2_rmdiri(dip, &dentry->d_name, ip);
488 gfs2_glock_dq_m(2, ghs);
490 gfs2_holder_uninit(ghs);
491 gfs2_holder_uninit(ghs + 1);
496 * gfs2_mknod - Make a special file
497 * @dir: The directory in which the special file will reside
498 * @dentry: The dentry of the special file
499 * @mode: The mode of the special file
500 * @rdev: The device specification of the special file
504 static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,
507 struct gfs2_inode *dip = GFS2_I(dir);
508 struct gfs2_sbd *sdp = GFS2_SB(dir);
509 struct gfs2_holder ghs[2];
512 gfs2_holder_init(dip->i_gl, 0, 0, ghs);
514 inode = gfs2_createi(ghs, &dentry->d_name, mode, dev);
516 gfs2_holder_uninit(ghs);
517 return PTR_ERR(inode);
521 if (dip->i_alloc.al_rgd)
522 gfs2_inplace_release(dip);
523 gfs2_quota_unlock(dip);
526 gfs2_glock_dq_uninit_m(2, ghs);
528 d_instantiate(dentry, inode);
529 mark_inode_dirty(inode);
535 * gfs2_rename - Rename a file
536 * @odir: Parent directory of old file name
537 * @odentry: The old dentry of the file
538 * @ndir: Parent directory of new file name
539 * @ndentry: The new dentry of the file
544 static int gfs2_rename(struct inode *odir, struct dentry *odentry,
545 struct inode *ndir, struct dentry *ndentry)
547 struct gfs2_inode *odip = GFS2_I(odir);
548 struct gfs2_inode *ndip = GFS2_I(ndir);
549 struct gfs2_inode *ip = GFS2_I(odentry->d_inode);
550 struct gfs2_inode *nip = NULL;
551 struct gfs2_sbd *sdp = GFS2_SB(odir);
552 struct gfs2_holder ghs[4], r_gh;
559 if (ndentry->d_inode) {
560 nip = GFS2_I(ndentry->d_inode);
565 /* Make sure we aren't trying to move a dirctory into it's subdir */
567 if (S_ISDIR(ip->i_di.di_mode) && odip != ndip) {
570 error = gfs2_glock_nq_init(sdp->sd_rename_gl,
576 error = gfs2_ok_to_move(ip, ndip);
582 gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);
584 gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
587 gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
591 gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh);
595 error = gfs2_glock_nq_m(num_gh, ghs);
599 /* Check out the old directory */
601 error = gfs2_unlink_ok(odip, &odentry->d_name, ip);
605 /* Check out the new directory */
608 error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip);
612 if (S_ISDIR(nip->i_di.di_mode)) {
613 if (nip->i_di.di_entries < 2) {
614 if (gfs2_consist_inode(nip))
615 gfs2_dinode_print(nip);
619 if (nip->i_di.di_entries > 2) {
625 error = permission(ndir, MAY_WRITE | MAY_EXEC, NULL);
629 error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL);
641 if (!ndip->i_di.di_nlink) {
645 if (ndip->i_di.di_entries == (u32)-1) {
649 if (S_ISDIR(ip->i_di.di_mode) &&
650 ndip->i_di.di_nlink == (u32)-1) {
657 /* Check out the dir to be renamed */
660 error = permission(odentry->d_inode, MAY_WRITE, NULL);
665 alloc_required = error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name);
670 if (alloc_required) {
671 struct gfs2_alloc *al = gfs2_alloc_get(ndip);
673 error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
677 error = gfs2_quota_check(ndip, ndip->i_di.di_uid,
682 al->al_requested = sdp->sd_max_dirres;
684 error = gfs2_inplace_reserve(ndip);
688 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
689 al->al_rgd->rd_ri.ri_length +
690 4 * RES_DINODE + 4 * RES_LEAF +
691 RES_STATFS + RES_QUOTA, 0);
695 error = gfs2_trans_begin(sdp, 4 * RES_DINODE +
701 /* Remove the target file, if it exists */
704 if (S_ISDIR(nip->i_di.di_mode))
705 error = gfs2_rmdiri(ndip, &ndentry->d_name, nip);
707 error = gfs2_dir_del(ndip, &ndentry->d_name);
710 error = gfs2_change_nlink(nip, -1);
718 gfs2_str2qstr(&name, "..");
720 error = gfs2_change_nlink(ndip, +1);
723 error = gfs2_change_nlink(odip, -1);
727 error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR);
731 struct buffer_head *dibh;
732 error = gfs2_meta_inode_buffer(ip, &dibh);
735 ip->i_di.di_ctime = get_seconds();
736 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
737 gfs2_dinode_out(ip, dibh->b_data);
741 error = gfs2_dir_del(odip, &odentry->d_name);
745 error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num,
746 IF2DT(ip->i_di.di_mode));
754 gfs2_inplace_release(ndip);
757 gfs2_quota_unlock(ndip);
760 gfs2_alloc_put(ndip);
762 gfs2_glock_dq_m(num_gh, ghs);
764 for (x = 0; x < num_gh; x++)
765 gfs2_holder_uninit(ghs + x);
768 gfs2_glock_dq_uninit(&r_gh);
774 * gfs2_readlink - Read the value of a symlink
775 * @dentry: the symlink
776 * @buf: the buffer to read the symlink data into
777 * @size: the size of the buffer
782 static int gfs2_readlink(struct dentry *dentry, char __user *user_buf,
785 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
786 char array[GFS2_FAST_NAME_SIZE], *buf = array;
787 unsigned int len = GFS2_FAST_NAME_SIZE;
790 error = gfs2_readlinki(ip, &buf, &len);
794 if (user_size > len - 1)
797 if (copy_to_user(user_buf, buf, user_size))
809 * gfs2_follow_link - Follow a symbolic link
810 * @dentry: The dentry of the link
811 * @nd: Data that we pass to vfs_follow_link()
813 * This can handle symlinks of any size. It is optimised for symlinks
814 * under GFS2_FAST_NAME_SIZE.
816 * Returns: 0 on success or error code
819 static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
821 struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
822 char array[GFS2_FAST_NAME_SIZE], *buf = array;
823 unsigned int len = GFS2_FAST_NAME_SIZE;
826 error = gfs2_readlinki(ip, &buf, &len);
828 error = vfs_follow_link(nd, buf);
833 return ERR_PTR(error);
840 * @nd: passed from Linux VFS, ignored by us
845 static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
847 struct gfs2_inode *ip = GFS2_I(inode);
848 struct gfs2_holder i_gh;
851 if (ip->i_vn == ip->i_gl->gl_vn)
852 return generic_permission(inode, mask, gfs2_check_acl);
854 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh);
856 error = generic_permission(inode, mask, gfs2_check_acl_locked);
857 gfs2_glock_dq_uninit(&i_gh);
863 static int setattr_size(struct inode *inode, struct iattr *attr)
865 struct gfs2_inode *ip = GFS2_I(inode);
868 if (attr->ia_size != ip->i_di.di_size) {
869 error = vmtruncate(inode, attr->ia_size);
874 error = gfs2_truncatei(ip, attr->ia_size);
881 static int setattr_chown(struct inode *inode, struct iattr *attr)
883 struct gfs2_inode *ip = GFS2_I(inode);
884 struct gfs2_sbd *sdp = GFS2_SB(inode);
885 struct buffer_head *dibh;
886 u32 ouid, ogid, nuid, ngid;
889 ouid = ip->i_di.di_uid;
890 ogid = ip->i_di.di_gid;
894 if (!(attr->ia_valid & ATTR_UID) || ouid == nuid)
895 ouid = nuid = NO_QUOTA_CHANGE;
896 if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
897 ogid = ngid = NO_QUOTA_CHANGE;
901 error = gfs2_quota_lock(ip, nuid, ngid);
905 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
906 error = gfs2_quota_check(ip, nuid, ngid);
911 error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0);
915 error = gfs2_meta_inode_buffer(ip, &dibh);
919 error = inode_setattr(inode, attr);
920 gfs2_assert_warn(sdp, !error);
921 gfs2_inode_attr_out(ip);
923 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
924 gfs2_dinode_out(ip, dibh->b_data);
927 if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
928 gfs2_quota_change(ip, -ip->i_di.di_blocks, ouid, ogid);
929 gfs2_quota_change(ip, ip->i_di.di_blocks, nuid, ngid);
935 gfs2_quota_unlock(ip);
942 * gfs2_setattr - Change attributes on an inode
943 * @dentry: The dentry which is changing
944 * @attr: The structure describing the change
946 * The VFS layer wants to change one or more of an inodes attributes. Write
947 * that change out to disk.
952 static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
954 struct inode *inode = dentry->d_inode;
955 struct gfs2_inode *ip = GFS2_I(inode);
956 struct gfs2_holder i_gh;
959 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
964 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
967 error = inode_change_ok(inode, attr);
971 if (attr->ia_valid & ATTR_SIZE)
972 error = setattr_size(inode, attr);
973 else if (attr->ia_valid & (ATTR_UID | ATTR_GID))
974 error = setattr_chown(inode, attr);
975 else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode))
976 error = gfs2_acl_chmod(ip, attr);
978 error = gfs2_setattr_simple(ip, attr);
981 gfs2_glock_dq_uninit(&i_gh);
983 mark_inode_dirty(inode);
988 * gfs2_getattr - Read out an inode's attributes
989 * @mnt: The vfsmount the inode is being accessed from
990 * @dentry: The dentry to stat
991 * @stat: The inode's stats
996 static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
999 struct inode *inode = dentry->d_inode;
1000 struct gfs2_inode *ip = GFS2_I(inode);
1001 struct gfs2_holder gh;
1004 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
1006 generic_fillattr(inode, stat);
1007 gfs2_glock_dq_uninit(&gh);
1013 static int gfs2_setxattr(struct dentry *dentry, const char *name,
1014 const void *data, size_t size, int flags)
1016 struct inode *inode = dentry->d_inode;
1017 struct gfs2_ea_request er;
1019 memset(&er, 0, sizeof(struct gfs2_ea_request));
1020 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1021 if (er.er_type == GFS2_EATYPE_UNUSED)
1023 er.er_data = (char *)data;
1024 er.er_name_len = strlen(er.er_name);
1025 er.er_data_len = size;
1026 er.er_flags = flags;
1028 gfs2_assert_warn(GFS2_SB(inode), !(er.er_flags & GFS2_ERF_MODE));
1030 return gfs2_ea_set(GFS2_I(inode), &er);
1033 static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name,
1034 void *data, size_t size)
1036 struct gfs2_ea_request er;
1038 memset(&er, 0, sizeof(struct gfs2_ea_request));
1039 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1040 if (er.er_type == GFS2_EATYPE_UNUSED)
1043 er.er_name_len = strlen(er.er_name);
1044 er.er_data_len = size;
1046 return gfs2_ea_get(GFS2_I(dentry->d_inode), &er);
1049 static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
1051 struct gfs2_ea_request er;
1053 memset(&er, 0, sizeof(struct gfs2_ea_request));
1054 er.er_data = (size) ? buffer : NULL;
1055 er.er_data_len = size;
1057 return gfs2_ea_list(GFS2_I(dentry->d_inode), &er);
1060 static int gfs2_removexattr(struct dentry *dentry, const char *name)
1062 struct gfs2_ea_request er;
1064 memset(&er, 0, sizeof(struct gfs2_ea_request));
1065 er.er_type = gfs2_ea_name2type(name, &er.er_name);
1066 if (er.er_type == GFS2_EATYPE_UNUSED)
1068 er.er_name_len = strlen(er.er_name);
1070 return gfs2_ea_remove(GFS2_I(dentry->d_inode), &er);
1073 struct inode_operations gfs2_file_iops = {
1074 .permission = gfs2_permission,
1075 .setattr = gfs2_setattr,
1076 .getattr = gfs2_getattr,
1077 .setxattr = gfs2_setxattr,
1078 .getxattr = gfs2_getxattr,
1079 .listxattr = gfs2_listxattr,
1080 .removexattr = gfs2_removexattr,
1083 struct inode_operations gfs2_dev_iops = {
1084 .permission = gfs2_permission,
1085 .setattr = gfs2_setattr,
1086 .getattr = gfs2_getattr,
1087 .setxattr = gfs2_setxattr,
1088 .getxattr = gfs2_getxattr,
1089 .listxattr = gfs2_listxattr,
1090 .removexattr = gfs2_removexattr,
1093 struct inode_operations gfs2_dir_iops = {
1094 .create = gfs2_create,
1095 .lookup = gfs2_lookup,
1097 .unlink = gfs2_unlink,
1098 .symlink = gfs2_symlink,
1099 .mkdir = gfs2_mkdir,
1100 .rmdir = gfs2_rmdir,
1101 .mknod = gfs2_mknod,
1102 .rename = gfs2_rename,
1103 .permission = gfs2_permission,
1104 .setattr = gfs2_setattr,
1105 .getattr = gfs2_getattr,
1106 .setxattr = gfs2_setxattr,
1107 .getxattr = gfs2_getxattr,
1108 .listxattr = gfs2_listxattr,
1109 .removexattr = gfs2_removexattr,
1112 struct inode_operations gfs2_symlink_iops = {
1113 .readlink = gfs2_readlink,
1114 .follow_link = gfs2_follow_link,
1115 .permission = gfs2_permission,
1116 .setattr = gfs2_setattr,
1117 .getattr = gfs2_getattr,
1118 .setxattr = gfs2_setxattr,
1119 .getxattr = gfs2_getxattr,
1120 .listxattr = gfs2_listxattr,
1121 .removexattr = gfs2_removexattr,