2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2011 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/slab.h>
11 #include <linux/spinlock.h>
12 #include <linux/completion.h>
13 #include <linux/buffer_head.h>
14 #include <linux/namei.h>
16 #include <linux/xattr.h>
17 #include <linux/posix_acl.h>
18 #include <linux/gfs2_ondisk.h>
19 #include <linux/crc32.h>
20 #include <linux/fiemap.h>
21 #include <linux/security.h>
22 #include <asm/uaccess.h>
40 struct gfs2_skip_data
{
46 static int iget_test(struct inode
*inode
, void *opaque
)
48 struct gfs2_inode
*ip
= GFS2_I(inode
);
49 struct gfs2_skip_data
*data
= opaque
;
51 if (ip
->i_no_addr
== data
->no_addr
) {
52 if (data
->non_block
&&
53 inode
->i_state
& (I_FREEING
|I_CLEAR
|I_WILL_FREE
)) {
62 static int iget_set(struct inode
*inode
, void *opaque
)
64 struct gfs2_inode
*ip
= GFS2_I(inode
);
65 struct gfs2_skip_data
*data
= opaque
;
69 inode
->i_ino
= (unsigned long)(data
->no_addr
);
70 ip
->i_no_addr
= data
->no_addr
;
74 struct inode
*gfs2_ilookup(struct super_block
*sb
, u64 no_addr
, int non_block
)
76 unsigned long hash
= (unsigned long)no_addr
;
77 struct gfs2_skip_data data
;
79 data
.no_addr
= no_addr
;
81 data
.non_block
= non_block
;
82 return ilookup5(sb
, hash
, iget_test
, &data
);
85 static struct inode
*gfs2_iget(struct super_block
*sb
, u64 no_addr
,
88 struct gfs2_skip_data data
;
89 unsigned long hash
= (unsigned long)no_addr
;
91 data
.no_addr
= no_addr
;
93 data
.non_block
= non_block
;
94 return iget5_locked(sb
, hash
, iget_test
, iget_set
, &data
);
98 * gfs2_set_iop - Sets inode operations
99 * @inode: The inode with correct i_mode filled in
101 * GFS2 lookup code fills in vfs inode contents based on info obtained
102 * from directory entry inside gfs2_inode_lookup().
105 static void gfs2_set_iop(struct inode
*inode
)
107 struct gfs2_sbd
*sdp
= GFS2_SB(inode
);
108 umode_t mode
= inode
->i_mode
;
111 inode
->i_op
= &gfs2_file_iops
;
112 if (gfs2_localflocks(sdp
))
113 inode
->i_fop
= &gfs2_file_fops_nolock
;
115 inode
->i_fop
= &gfs2_file_fops
;
116 } else if (S_ISDIR(mode
)) {
117 inode
->i_op
= &gfs2_dir_iops
;
118 if (gfs2_localflocks(sdp
))
119 inode
->i_fop
= &gfs2_dir_fops_nolock
;
121 inode
->i_fop
= &gfs2_dir_fops
;
122 } else if (S_ISLNK(mode
)) {
123 inode
->i_op
= &gfs2_symlink_iops
;
125 inode
->i_op
= &gfs2_file_iops
;
126 init_special_inode(inode
, inode
->i_mode
, inode
->i_rdev
);
131 * gfs2_inode_lookup - Lookup an inode
132 * @sb: The super block
133 * @no_addr: The inode number
134 * @type: The type of the inode
135 * non_block: Can we block on inodes that are being freed?
137 * Returns: A VFS inode, or an error
140 struct inode
*gfs2_inode_lookup(struct super_block
*sb
, unsigned int type
,
141 u64 no_addr
, u64 no_formal_ino
, int non_block
)
144 struct gfs2_inode
*ip
;
145 struct gfs2_glock
*io_gl
= NULL
;
148 inode
= gfs2_iget(sb
, no_addr
, non_block
);
152 return ERR_PTR(-ENOBUFS
);
154 if (inode
->i_state
& I_NEW
) {
155 struct gfs2_sbd
*sdp
= GFS2_SB(inode
);
156 ip
->i_no_formal_ino
= no_formal_ino
;
158 error
= gfs2_glock_get(sdp
, no_addr
, &gfs2_inode_glops
, CREATE
, &ip
->i_gl
);
161 ip
->i_gl
->gl_object
= ip
;
163 error
= gfs2_glock_get(sdp
, no_addr
, &gfs2_iopen_glops
, CREATE
, &io_gl
);
167 set_bit(GIF_INVALID
, &ip
->i_flags
);
168 error
= gfs2_glock_nq_init(io_gl
, LM_ST_SHARED
, GL_EXACT
, &ip
->i_iopen_gh
);
172 ip
->i_iopen_gh
.gh_gl
->gl_object
= ip
;
173 gfs2_glock_put(io_gl
);
176 if (type
== DT_UNKNOWN
) {
177 /* Inode glock must be locked already */
178 error
= gfs2_inode_refresh(GFS2_I(inode
));
182 inode
->i_mode
= DT2IF(type
);
186 unlock_new_inode(inode
);
192 ip
->i_iopen_gh
.gh_gl
->gl_object
= NULL
;
193 gfs2_glock_dq_uninit(&ip
->i_iopen_gh
);
196 gfs2_glock_put(io_gl
);
198 ip
->i_gl
->gl_object
= NULL
;
199 gfs2_glock_put(ip
->i_gl
);
202 return ERR_PTR(error
);
205 struct inode
*gfs2_lookup_by_inum(struct gfs2_sbd
*sdp
, u64 no_addr
,
206 u64
*no_formal_ino
, unsigned int blktype
)
208 struct super_block
*sb
= sdp
->sd_vfs
;
209 struct gfs2_holder i_gh
;
210 struct inode
*inode
= NULL
;
213 /* Must not read in block until block type is verified */
214 error
= gfs2_glock_nq_num(sdp
, no_addr
, &gfs2_inode_glops
,
215 LM_ST_EXCLUSIVE
, GL_SKIP
, &i_gh
);
217 return ERR_PTR(error
);
219 error
= gfs2_check_blk_type(sdp
, no_addr
, blktype
);
223 inode
= gfs2_inode_lookup(sb
, DT_UNKNOWN
, no_addr
, 0, 1);
227 /* Two extra checks for NFS only */
230 if (GFS2_I(inode
)->i_no_formal_ino
!= *no_formal_ino
)
234 if (GFS2_I(inode
)->i_diskflags
& GFS2_DIF_SYSTEM
)
241 gfs2_glock_dq_uninit(&i_gh
);
242 return error
? ERR_PTR(error
) : inode
;
249 struct inode
*gfs2_lookup_simple(struct inode
*dip
, const char *name
)
253 gfs2_str2qstr(&qstr
, name
);
254 inode
= gfs2_lookupi(dip
, &qstr
, 1);
255 /* gfs2_lookupi has inconsistent callers: vfs
256 * related routines expect NULL for no entry found,
257 * gfs2_lookup_simple callers expect ENOENT
258 * and do not check for NULL.
261 return ERR_PTR(-ENOENT
);
268 * gfs2_lookupi - Look up a filename in a directory and return its inode
269 * @d_gh: An initialized holder for the directory glock
270 * @name: The name of the inode to look for
271 * @is_root: If 1, ignore the caller's permissions
272 * @i_gh: An uninitialized holder for the new inode glock
274 * This can be called via the VFS filldir function when NFS is doing
275 * a readdirplus and the inode which its intending to stat isn't
276 * already in cache. In this case we must not take the directory glock
277 * again, since the readdir call will have already taken that lock.
282 struct inode
*gfs2_lookupi(struct inode
*dir
, const struct qstr
*name
,
285 struct super_block
*sb
= dir
->i_sb
;
286 struct gfs2_inode
*dip
= GFS2_I(dir
);
287 struct gfs2_holder d_gh
;
289 struct inode
*inode
= NULL
;
292 if (!name
->len
|| name
->len
> GFS2_FNAMESIZE
)
293 return ERR_PTR(-ENAMETOOLONG
);
295 if ((name
->len
== 1 && memcmp(name
->name
, ".", 1) == 0) ||
296 (name
->len
== 2 && memcmp(name
->name
, "..", 2) == 0 &&
297 dir
== sb
->s_root
->d_inode
)) {
302 if (gfs2_glock_is_locked_by_me(dip
->i_gl
) == NULL
) {
303 error
= gfs2_glock_nq_init(dip
->i_gl
, LM_ST_SHARED
, 0, &d_gh
);
305 return ERR_PTR(error
);
310 error
= gfs2_permission(dir
, MAY_EXEC
);
315 inode
= gfs2_dir_search(dir
, name
);
317 error
= PTR_ERR(inode
);
320 gfs2_glock_dq_uninit(&d_gh
);
321 if (error
== -ENOENT
)
323 return inode
? inode
: ERR_PTR(error
);
327 * create_ok - OK to create a new on-disk inode here?
328 * @dip: Directory in which dinode is to be created
329 * @name: Name of new dinode
335 static int create_ok(struct gfs2_inode
*dip
, const struct qstr
*name
,
340 error
= gfs2_permission(&dip
->i_inode
, MAY_WRITE
| MAY_EXEC
);
344 /* Don't create entries in an unlinked directory */
345 if (!dip
->i_inode
.i_nlink
)
348 error
= gfs2_dir_check(&dip
->i_inode
, name
, NULL
);
359 if (dip
->i_entries
== (u32
)-1)
361 if (S_ISDIR(mode
) && dip
->i_inode
.i_nlink
== (u32
)-1)
367 static void munge_mode_uid_gid(struct gfs2_inode
*dip
, umode_t
*mode
,
368 unsigned int *uid
, unsigned int *gid
)
370 if (GFS2_SB(&dip
->i_inode
)->sd_args
.ar_suiddir
&&
371 (dip
->i_inode
.i_mode
& S_ISUID
) && dip
->i_inode
.i_uid
) {
374 else if (dip
->i_inode
.i_uid
!= current_fsuid())
376 *uid
= dip
->i_inode
.i_uid
;
378 *uid
= current_fsuid();
380 if (dip
->i_inode
.i_mode
& S_ISGID
) {
383 *gid
= dip
->i_inode
.i_gid
;
385 *gid
= current_fsgid();
388 static int alloc_dinode(struct gfs2_inode
*dip
, u64
*no_addr
, u64
*generation
)
390 struct gfs2_sbd
*sdp
= GFS2_SB(&dip
->i_inode
);
394 error
= gfs2_inplace_reserve(dip
, RES_DINODE
);
398 error
= gfs2_trans_begin(sdp
, RES_RG_BIT
+ RES_STATFS
, 0);
402 error
= gfs2_alloc_blocks(dip
, no_addr
, &dblocks
, 1, generation
);
407 gfs2_inplace_release(dip
);
412 static void gfs2_init_dir(struct buffer_head
*dibh
,
413 const struct gfs2_inode
*parent
)
415 struct gfs2_dinode
*di
= (struct gfs2_dinode
*)dibh
->b_data
;
416 struct gfs2_dirent
*dent
= (struct gfs2_dirent
*)(di
+1);
418 gfs2_qstr2dirent(&gfs2_qdot
, GFS2_DIRENT_SIZE(gfs2_qdot
.len
), dent
);
419 dent
->de_inum
= di
->di_num
; /* already GFS2 endian */
420 dent
->de_type
= cpu_to_be16(DT_DIR
);
422 dent
= (struct gfs2_dirent
*)((char*)dent
+ GFS2_DIRENT_SIZE(1));
423 gfs2_qstr2dirent(&gfs2_qdotdot
, dibh
->b_size
- GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode
), dent
);
424 gfs2_inum_out(parent
, dent
);
425 dent
->de_type
= cpu_to_be16(DT_DIR
);
430 * init_dinode - Fill in a new dinode structure
431 * @dip: The directory this inode is being created in
432 * @gl: The glock covering the new inode
433 * @inum: The inode number
434 * @mode: The file permissions
435 * @uid: The uid of the new inode
436 * @gid: The gid of the new inode
437 * @generation: The generation number of the new inode
438 * @dev: The device number (if a device node)
439 * @symname: The symlink destination (if a symlink)
440 * @size: The inode size (ignored for directories)
441 * @bhp: The buffer head (returned to caller)
445 static void init_dinode(struct gfs2_inode
*dip
, struct gfs2_glock
*gl
,
446 const struct gfs2_inum_host
*inum
, umode_t mode
,
447 unsigned int uid
, unsigned int gid
,
448 const u64
*generation
, dev_t dev
, const char *symname
,
449 unsigned size
, struct buffer_head
**bhp
)
451 struct gfs2_sbd
*sdp
= GFS2_SB(&dip
->i_inode
);
452 struct gfs2_dinode
*di
;
453 struct buffer_head
*dibh
;
454 struct timespec tv
= CURRENT_TIME
;
456 dibh
= gfs2_meta_new(gl
, inum
->no_addr
);
457 gfs2_trans_add_bh(gl
, dibh
, 1);
458 gfs2_metatype_set(dibh
, GFS2_METATYPE_DI
, GFS2_FORMAT_DI
);
459 gfs2_buffer_clear_tail(dibh
, sizeof(struct gfs2_dinode
));
460 di
= (struct gfs2_dinode
*)dibh
->b_data
;
462 di
->di_num
.no_formal_ino
= cpu_to_be64(inum
->no_formal_ino
);
463 di
->di_num
.no_addr
= cpu_to_be64(inum
->no_addr
);
464 di
->di_mode
= cpu_to_be32(mode
);
465 di
->di_uid
= cpu_to_be32(uid
);
466 di
->di_gid
= cpu_to_be32(gid
);
468 di
->di_size
= cpu_to_be64(size
);
469 di
->di_blocks
= cpu_to_be64(1);
470 di
->di_atime
= di
->di_mtime
= di
->di_ctime
= cpu_to_be64(tv
.tv_sec
);
471 di
->di_major
= cpu_to_be32(MAJOR(dev
));
472 di
->di_minor
= cpu_to_be32(MINOR(dev
));
473 di
->di_goal_meta
= di
->di_goal_data
= cpu_to_be64(inum
->no_addr
);
474 di
->di_generation
= cpu_to_be64(*generation
);
477 di
->di_payload_format
= cpu_to_be32(S_ISDIR(mode
) ? GFS2_FORMAT_DE
: 0);
483 memset(&di
->__pad4
, 0, sizeof(di
->__pad4
));
485 di
->di_atime_nsec
= cpu_to_be32(tv
.tv_nsec
);
486 di
->di_mtime_nsec
= cpu_to_be32(tv
.tv_nsec
);
487 di
->di_ctime_nsec
= cpu_to_be32(tv
.tv_nsec
);
488 memset(&di
->di_reserved
, 0, sizeof(di
->di_reserved
));
490 switch(mode
& S_IFMT
) {
492 if ((dip
->i_diskflags
& GFS2_DIF_INHERIT_JDATA
) ||
493 gfs2_tune_get(sdp
, gt_new_files_jdata
))
494 di
->di_flags
|= cpu_to_be32(GFS2_DIF_JDATA
);
497 di
->di_flags
|= cpu_to_be32(dip
->i_diskflags
&
498 GFS2_DIF_INHERIT_JDATA
);
499 di
->di_flags
|= cpu_to_be32(GFS2_DIF_JDATA
);
500 di
->di_size
= cpu_to_be64(sdp
->sd_sb
.sb_bsize
- sizeof(struct gfs2_dinode
));
501 di
->di_entries
= cpu_to_be32(2);
502 gfs2_init_dir(dibh
, dip
);
505 memcpy(dibh
->b_data
+ sizeof(struct gfs2_dinode
), symname
, size
);
509 set_buffer_uptodate(dibh
);
514 static int make_dinode(struct gfs2_inode
*dip
, struct gfs2_glock
*gl
,
515 umode_t mode
, const struct gfs2_inum_host
*inum
,
516 const u64
*generation
, dev_t dev
, const char *symname
,
517 unsigned int size
, struct buffer_head
**bhp
)
519 struct gfs2_sbd
*sdp
= GFS2_SB(&dip
->i_inode
);
520 unsigned int uid
, gid
;
523 munge_mode_uid_gid(dip
, &mode
, &uid
, &gid
);
524 error
= gfs2_rindex_update(sdp
);
528 error
= gfs2_quota_lock(dip
, uid
, gid
);
532 error
= gfs2_quota_check(dip
, uid
, gid
);
536 error
= gfs2_trans_begin(sdp
, RES_DINODE
+ RES_QUOTA
, 0);
540 init_dinode(dip
, gl
, inum
, mode
, uid
, gid
, generation
, dev
, symname
, size
, bhp
);
541 gfs2_quota_change(dip
, +1, uid
, gid
);
545 gfs2_quota_unlock(dip
);
549 static int link_dinode(struct gfs2_inode
*dip
, const struct qstr
*name
,
550 struct gfs2_inode
*ip
)
552 struct gfs2_sbd
*sdp
= GFS2_SB(&dip
->i_inode
);
554 struct buffer_head
*dibh
;
557 error
= gfs2_rindex_update(sdp
);
561 error
= gfs2_quota_lock(dip
, NO_QUOTA_CHANGE
, NO_QUOTA_CHANGE
);
565 error
= alloc_required
= gfs2_diradd_alloc_required(&dip
->i_inode
, name
);
566 if (alloc_required
< 0)
567 goto fail_quota_locks
;
568 if (alloc_required
) {
569 error
= gfs2_quota_check(dip
, dip
->i_inode
.i_uid
, dip
->i_inode
.i_gid
);
571 goto fail_quota_locks
;
573 error
= gfs2_inplace_reserve(dip
, sdp
->sd_max_dirres
);
575 goto fail_quota_locks
;
577 error
= gfs2_trans_begin(sdp
, sdp
->sd_max_dirres
+
578 dip
->i_rgd
->rd_length
+
580 RES_STATFS
+ RES_QUOTA
, 0);
584 error
= gfs2_trans_begin(sdp
, RES_LEAF
+ 2 * RES_DINODE
, 0);
586 goto fail_quota_locks
;
589 error
= gfs2_dir_add(&dip
->i_inode
, name
, ip
);
593 error
= gfs2_meta_inode_buffer(ip
, &dibh
);
596 set_nlink(&ip
->i_inode
, S_ISDIR(ip
->i_inode
.i_mode
) ? 2 : 1);
597 gfs2_trans_add_bh(ip
->i_gl
, dibh
, 1);
598 gfs2_dinode_out(ip
, dibh
->b_data
);
607 gfs2_inplace_release(dip
);
610 gfs2_quota_unlock(dip
);
616 static int gfs2_initxattrs(struct inode
*inode
, const struct xattr
*xattr_array
,
619 const struct xattr
*xattr
;
622 for (xattr
= xattr_array
; xattr
->name
!= NULL
; xattr
++) {
623 err
= __gfs2_xattr_set(inode
, xattr
->name
, xattr
->value
,
625 GFS2_EATYPE_SECURITY
);
632 static int gfs2_security_init(struct gfs2_inode
*dip
, struct gfs2_inode
*ip
,
633 const struct qstr
*qstr
)
635 return security_inode_init_security(&ip
->i_inode
, &dip
->i_inode
, qstr
,
636 &gfs2_initxattrs
, NULL
);
640 * gfs2_create_inode - Create a new inode
641 * @dir: The parent directory
642 * @dentry: The new dentry
643 * @mode: The permissions on the new inode
644 * @dev: For device nodes, this is the device number
645 * @symname: For symlinks, this is the link destination
646 * @size: The initial size of the inode (ignored for directories)
648 * Returns: 0 on success, or error code
651 static int gfs2_create_inode(struct inode
*dir
, struct dentry
*dentry
,
652 umode_t mode
, dev_t dev
, const char *symname
,
653 unsigned int size
, int excl
)
655 const struct qstr
*name
= &dentry
->d_name
;
656 struct gfs2_holder ghs
[2];
657 struct inode
*inode
= NULL
;
658 struct gfs2_inode
*dip
= GFS2_I(dir
), *ip
;
659 struct gfs2_sbd
*sdp
= GFS2_SB(&dip
->i_inode
);
660 struct gfs2_inum_host inum
= { .no_addr
= 0, .no_formal_ino
= 0 };
663 struct buffer_head
*bh
= NULL
;
665 if (!name
->len
|| name
->len
> GFS2_FNAMESIZE
)
666 return -ENAMETOOLONG
;
668 /* We need a reservation to allocate the new dinode block. The
669 directory ip temporarily points to the reservation, but this is
670 being done to get a set of contiguous blocks for the new dinode.
671 Since this is a create, we don't have a sizehint yet, so it will
672 have to use the minimum reservation size. */
673 error
= gfs2_rs_alloc(dip
);
677 error
= gfs2_glock_nq_init(dip
->i_gl
, LM_ST_EXCLUSIVE
, 0, ghs
);
681 error
= create_ok(dip
, name
, mode
);
682 if ((error
== -EEXIST
) && S_ISREG(mode
) && !excl
) {
683 inode
= gfs2_lookupi(dir
, &dentry
->d_name
, 0);
684 gfs2_glock_dq_uninit(ghs
);
685 d_instantiate(dentry
, inode
);
686 return IS_ERR(inode
) ? PTR_ERR(inode
) : 0;
691 error
= alloc_dinode(dip
, &inum
.no_addr
, &generation
);
694 inum
.no_formal_ino
= generation
;
696 error
= gfs2_glock_nq_num(sdp
, inum
.no_addr
, &gfs2_inode_glops
,
697 LM_ST_EXCLUSIVE
, GL_SKIP
, ghs
+ 1);
701 error
= make_dinode(dip
, ghs
[1].gh_gl
, mode
, &inum
, &generation
, dev
, symname
, size
, &bh
);
705 inode
= gfs2_inode_lookup(dir
->i_sb
, IF2DT(mode
), inum
.no_addr
,
706 inum
.no_formal_ino
, 0);
711 error
= gfs2_inode_refresh(ip
);
715 /* The newly created inode needs a reservation so it can allocate
716 xattrs. At the same time, we want new blocks allocated to the new
717 dinode to be as contiguous as possible. Since we allocated the
718 dinode block under the directory's reservation, we transfer
719 ownership of that reservation to the new inode. The directory
720 doesn't need a reservation unless it needs a new allocation. */
721 ip
->i_res
= dip
->i_res
;
724 error
= gfs2_acl_create(dip
, inode
);
728 error
= gfs2_security_init(dip
, ip
, name
);
732 error
= link_dinode(dip
, name
, ip
);
740 /* Check if we reserved space in the rgrp. Function link_dinode may
741 not, depending on whether alloc is required. */
742 if (gfs2_mb_reserved(dip
))
743 gfs2_inplace_release(dip
);
744 gfs2_quota_unlock(dip
);
745 mark_inode_dirty(inode
);
746 gfs2_glock_dq_uninit_m(2, ghs
);
747 d_instantiate(dentry
, inode
);
751 gfs2_glock_dq_uninit(ghs
+ 1);
753 gfs2_glock_dq_uninit(ghs
);
754 if (inode
&& !IS_ERR(inode
)) {
755 set_bit(GIF_ALLOC_FAILED
, &GFS2_I(inode
)->i_flags
);
766 * gfs2_create - Create a file
767 * @dir: The directory in which to create the file
768 * @dentry: The dentry of the new file
769 * @mode: The mode of the new file
774 static int gfs2_create(struct inode
*dir
, struct dentry
*dentry
,
775 umode_t mode
, bool excl
)
777 return gfs2_create_inode(dir
, dentry
, S_IFREG
| mode
, 0, NULL
, 0, excl
);
781 * gfs2_lookup - Look up a filename in a directory and return its inode
782 * @dir: The directory inode
783 * @dentry: The dentry of the new inode
784 * @nd: passed from Linux VFS, ignored by us
786 * Called by the VFS layer. Lock dir and call gfs2_lookupi()
791 static struct dentry
*gfs2_lookup(struct inode
*dir
, struct dentry
*dentry
,
794 struct inode
*inode
= gfs2_lookupi(dir
, &dentry
->d_name
, 0);
795 if (inode
&& !IS_ERR(inode
)) {
796 struct gfs2_glock
*gl
= GFS2_I(inode
)->i_gl
;
797 struct gfs2_holder gh
;
799 error
= gfs2_glock_nq_init(gl
, LM_ST_SHARED
, LM_FLAG_ANY
, &gh
);
802 return ERR_PTR(error
);
804 gfs2_glock_dq_uninit(&gh
);
806 return d_splice_alias(inode
, dentry
);
810 * gfs2_link - Link to a file
811 * @old_dentry: The inode to link
812 * @dir: Add link to this directory
813 * @dentry: The name of the link
815 * Link the inode in "old_dentry" into the directory "dir" with the
821 static int gfs2_link(struct dentry
*old_dentry
, struct inode
*dir
,
822 struct dentry
*dentry
)
824 struct gfs2_inode
*dip
= GFS2_I(dir
);
825 struct gfs2_sbd
*sdp
= GFS2_SB(dir
);
826 struct inode
*inode
= old_dentry
->d_inode
;
827 struct gfs2_inode
*ip
= GFS2_I(inode
);
828 struct gfs2_holder ghs
[2];
829 struct buffer_head
*dibh
;
833 if (S_ISDIR(inode
->i_mode
))
836 error
= gfs2_rs_alloc(dip
);
840 gfs2_holder_init(dip
->i_gl
, LM_ST_EXCLUSIVE
, 0, ghs
);
841 gfs2_holder_init(ip
->i_gl
, LM_ST_EXCLUSIVE
, 0, ghs
+ 1);
843 error
= gfs2_glock_nq(ghs
); /* parent */
847 error
= gfs2_glock_nq(ghs
+ 1); /* child */
852 if (inode
->i_nlink
== 0)
855 error
= gfs2_permission(dir
, MAY_WRITE
| MAY_EXEC
);
859 error
= gfs2_dir_check(dir
, &dentry
->d_name
, NULL
);
870 if (!dip
->i_inode
.i_nlink
)
873 if (dip
->i_entries
== (u32
)-1)
876 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
879 if (!ip
->i_inode
.i_nlink
)
882 if (ip
->i_inode
.i_nlink
== (u32
)-1)
885 alloc_required
= error
= gfs2_diradd_alloc_required(dir
, &dentry
->d_name
);
890 if (alloc_required
) {
891 error
= gfs2_quota_lock_check(dip
);
895 error
= gfs2_inplace_reserve(dip
, sdp
->sd_max_dirres
);
899 error
= gfs2_trans_begin(sdp
, sdp
->sd_max_dirres
+
900 gfs2_rg_blocks(dip
) +
901 2 * RES_DINODE
+ RES_STATFS
+
906 error
= gfs2_trans_begin(sdp
, 2 * RES_DINODE
+ RES_LEAF
, 0);
911 error
= gfs2_meta_inode_buffer(ip
, &dibh
);
915 error
= gfs2_dir_add(dir
, &dentry
->d_name
, ip
);
919 gfs2_trans_add_bh(ip
->i_gl
, dibh
, 1);
920 inc_nlink(&ip
->i_inode
);
921 ip
->i_inode
.i_ctime
= CURRENT_TIME
;
923 d_instantiate(dentry
, inode
);
924 mark_inode_dirty(inode
);
932 gfs2_inplace_release(dip
);
935 gfs2_quota_unlock(dip
);
937 gfs2_glock_dq(ghs
+ 1);
941 gfs2_holder_uninit(ghs
);
942 gfs2_holder_uninit(ghs
+ 1);
947 * gfs2_unlink_ok - check to see that a inode is still in a directory
948 * @dip: the directory
949 * @name: the name of the file
952 * Assumes that the lock on (at least) @dip is held.
954 * Returns: 0 if the parent/child relationship is correct, errno if it isn't
957 static int gfs2_unlink_ok(struct gfs2_inode
*dip
, const struct qstr
*name
,
958 const struct gfs2_inode
*ip
)
962 if (IS_IMMUTABLE(&ip
->i_inode
) || IS_APPEND(&ip
->i_inode
))
965 if ((dip
->i_inode
.i_mode
& S_ISVTX
) &&
966 dip
->i_inode
.i_uid
!= current_fsuid() &&
967 ip
->i_inode
.i_uid
!= current_fsuid() && !capable(CAP_FOWNER
))
970 if (IS_APPEND(&dip
->i_inode
))
973 error
= gfs2_permission(&dip
->i_inode
, MAY_WRITE
| MAY_EXEC
);
977 error
= gfs2_dir_check(&dip
->i_inode
, name
, ip
);
985 * gfs2_unlink_inode - Removes an inode from its parent dir and unlinks it
986 * @dip: The parent directory
987 * @name: The name of the entry in the parent directory
988 * @bh: The inode buffer for the inode to be removed
989 * @inode: The inode to be removed
991 * Called with all the locks and in a transaction. This will only be
992 * called for a directory after it has been checked to ensure it is empty.
994 * Returns: 0 on success, or an error
997 static int gfs2_unlink_inode(struct gfs2_inode
*dip
,
998 const struct dentry
*dentry
,
999 struct buffer_head
*bh
)
1001 struct inode
*inode
= dentry
->d_inode
;
1002 struct gfs2_inode
*ip
= GFS2_I(inode
);
1005 error
= gfs2_dir_del(dip
, dentry
);
1010 inode
->i_ctime
= CURRENT_TIME
;
1011 if (S_ISDIR(inode
->i_mode
))
1015 mark_inode_dirty(inode
);
1016 if (inode
->i_nlink
== 0)
1017 gfs2_unlink_di(inode
);
1023 * gfs2_unlink - Unlink an inode (this does rmdir as well)
1024 * @dir: The inode of the directory containing the inode to unlink
1025 * @dentry: The file itself
1027 * This routine uses the type of the inode as a flag to figure out
1028 * whether this is an unlink or an rmdir.
1033 static int gfs2_unlink(struct inode
*dir
, struct dentry
*dentry
)
1035 struct gfs2_inode
*dip
= GFS2_I(dir
);
1036 struct gfs2_sbd
*sdp
= GFS2_SB(dir
);
1037 struct inode
*inode
= dentry
->d_inode
;
1038 struct gfs2_inode
*ip
= GFS2_I(inode
);
1039 struct buffer_head
*bh
;
1040 struct gfs2_holder ghs
[3];
1041 struct gfs2_rgrpd
*rgd
;
1044 error
= gfs2_rindex_update(sdp
);
1050 gfs2_holder_init(dip
->i_gl
, LM_ST_EXCLUSIVE
, 0, ghs
);
1051 gfs2_holder_init(ip
->i_gl
, LM_ST_EXCLUSIVE
, 0, ghs
+ 1);
1053 rgd
= gfs2_blk2rgrpd(sdp
, ip
->i_no_addr
, 1);
1057 gfs2_holder_init(rgd
->rd_gl
, LM_ST_EXCLUSIVE
, 0, ghs
+ 2);
1060 error
= gfs2_glock_nq(ghs
); /* parent */
1064 error
= gfs2_glock_nq(ghs
+ 1); /* child */
1069 if (inode
->i_nlink
== 0)
1072 if (S_ISDIR(inode
->i_mode
)) {
1074 if (ip
->i_entries
> 2 || inode
->i_nlink
> 2)
1078 error
= gfs2_glock_nq(ghs
+ 2); /* rgrp */
1082 error
= gfs2_unlink_ok(dip
, &dentry
->d_name
, ip
);
1086 error
= gfs2_trans_begin(sdp
, 2*RES_DINODE
+ 3*RES_LEAF
+ RES_RG_BIT
, 0);
1090 error
= gfs2_meta_inode_buffer(ip
, &bh
);
1094 error
= gfs2_unlink_inode(dip
, dentry
, bh
);
1098 gfs2_trans_end(sdp
);
1100 gfs2_glock_dq(ghs
+ 2);
1102 gfs2_glock_dq(ghs
+ 1);
1106 gfs2_holder_uninit(ghs
+ 2);
1108 gfs2_holder_uninit(ghs
+ 1);
1109 gfs2_holder_uninit(ghs
);
1114 * gfs2_symlink - Create a symlink
1115 * @dir: The directory to create the symlink in
1116 * @dentry: The dentry to put the symlink in
1117 * @symname: The thing which the link points to
1122 static int gfs2_symlink(struct inode
*dir
, struct dentry
*dentry
,
1123 const char *symname
)
1125 struct gfs2_sbd
*sdp
= GFS2_SB(dir
);
1128 size
= strlen(symname
);
1129 if (size
> sdp
->sd_sb
.sb_bsize
- sizeof(struct gfs2_dinode
) - 1)
1130 return -ENAMETOOLONG
;
1132 return gfs2_create_inode(dir
, dentry
, S_IFLNK
| S_IRWXUGO
, 0, symname
, size
, 0);
1136 * gfs2_mkdir - Make a directory
1137 * @dir: The parent directory of the new one
1138 * @dentry: The dentry of the new directory
1139 * @mode: The mode of the new directory
1144 static int gfs2_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1146 return gfs2_create_inode(dir
, dentry
, S_IFDIR
| mode
, 0, NULL
, 0, 0);
1150 * gfs2_mknod - Make a special file
1151 * @dir: The directory in which the special file will reside
1152 * @dentry: The dentry of the special file
1153 * @mode: The mode of the special file
1154 * @dev: The device specification of the special file
1158 static int gfs2_mknod(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
,
1161 return gfs2_create_inode(dir
, dentry
, mode
, dev
, NULL
, 0, 0);
1165 * gfs2_ok_to_move - check if it's ok to move a directory to another directory
1169 * Follow @to back to the root and make sure we don't encounter @this
1170 * Assumes we already hold the rename lock.
1175 static int gfs2_ok_to_move(struct gfs2_inode
*this, struct gfs2_inode
*to
)
1177 struct inode
*dir
= &to
->i_inode
;
1178 struct super_block
*sb
= dir
->i_sb
;
1185 if (dir
== &this->i_inode
) {
1189 if (dir
== sb
->s_root
->d_inode
) {
1194 tmp
= gfs2_lookupi(dir
, &gfs2_qdotdot
, 1);
1196 error
= PTR_ERR(tmp
);
1210 * gfs2_rename - Rename a file
1211 * @odir: Parent directory of old file name
1212 * @odentry: The old dentry of the file
1213 * @ndir: Parent directory of new file name
1214 * @ndentry: The new dentry of the file
1219 static int gfs2_rename(struct inode
*odir
, struct dentry
*odentry
,
1220 struct inode
*ndir
, struct dentry
*ndentry
)
1222 struct gfs2_inode
*odip
= GFS2_I(odir
);
1223 struct gfs2_inode
*ndip
= GFS2_I(ndir
);
1224 struct gfs2_inode
*ip
= GFS2_I(odentry
->d_inode
);
1225 struct gfs2_inode
*nip
= NULL
;
1226 struct gfs2_sbd
*sdp
= GFS2_SB(odir
);
1227 struct gfs2_holder ghs
[5], r_gh
= { .gh_gl
= NULL
, };
1228 struct gfs2_rgrpd
*nrgd
;
1229 unsigned int num_gh
;
1231 int alloc_required
= 0;
1235 if (ndentry
->d_inode
) {
1236 nip
= GFS2_I(ndentry
->d_inode
);
1241 error
= gfs2_rindex_update(sdp
);
1245 error
= gfs2_rs_alloc(ndip
);
1250 error
= gfs2_glock_nq_init(sdp
->sd_rename_gl
, LM_ST_EXCLUSIVE
,
1255 if (S_ISDIR(ip
->i_inode
.i_mode
)) {
1257 /* don't move a dirctory into it's subdir */
1258 error
= gfs2_ok_to_move(ip
, ndip
);
1265 gfs2_holder_init(odip
->i_gl
, LM_ST_EXCLUSIVE
, 0, ghs
);
1267 gfs2_holder_init(ndip
->i_gl
, LM_ST_EXCLUSIVE
, 0, ghs
+ num_gh
);
1270 gfs2_holder_init(ip
->i_gl
, LM_ST_EXCLUSIVE
, 0, ghs
+ num_gh
);
1274 gfs2_holder_init(nip
->i_gl
, LM_ST_EXCLUSIVE
, 0, ghs
+ num_gh
);
1276 /* grab the resource lock for unlink flag twiddling
1277 * this is the case of the target file already existing
1278 * so we unlink before doing the rename
1280 nrgd
= gfs2_blk2rgrpd(sdp
, nip
->i_no_addr
, 1);
1282 gfs2_holder_init(nrgd
->rd_gl
, LM_ST_EXCLUSIVE
, 0, ghs
+ num_gh
++);
1285 for (x
= 0; x
< num_gh
; x
++) {
1286 error
= gfs2_glock_nq(ghs
+ x
);
1292 if (ip
->i_inode
.i_nlink
== 0)
1295 /* Check out the old directory */
1297 error
= gfs2_unlink_ok(odip
, &odentry
->d_name
, ip
);
1301 /* Check out the new directory */
1304 error
= gfs2_unlink_ok(ndip
, &ndentry
->d_name
, nip
);
1308 if (nip
->i_inode
.i_nlink
== 0) {
1313 if (S_ISDIR(nip
->i_inode
.i_mode
)) {
1314 if (nip
->i_entries
< 2) {
1315 gfs2_consist_inode(nip
);
1319 if (nip
->i_entries
> 2) {
1325 error
= gfs2_permission(ndir
, MAY_WRITE
| MAY_EXEC
);
1329 error
= gfs2_dir_check(ndir
, &ndentry
->d_name
, NULL
);
1341 if (!ndip
->i_inode
.i_nlink
) {
1345 if (ndip
->i_entries
== (u32
)-1) {
1349 if (S_ISDIR(ip
->i_inode
.i_mode
) &&
1350 ndip
->i_inode
.i_nlink
== (u32
)-1) {
1357 /* Check out the dir to be renamed */
1360 error
= gfs2_permission(odentry
->d_inode
, MAY_WRITE
);
1366 alloc_required
= gfs2_diradd_alloc_required(ndir
, &ndentry
->d_name
);
1367 error
= alloc_required
;
1371 if (alloc_required
) {
1372 error
= gfs2_quota_lock_check(ndip
);
1376 error
= gfs2_inplace_reserve(ndip
, sdp
->sd_max_dirres
);
1380 error
= gfs2_trans_begin(sdp
, sdp
->sd_max_dirres
+
1381 gfs2_rg_blocks(ndip
) +
1382 4 * RES_DINODE
+ 4 * RES_LEAF
+
1383 RES_STATFS
+ RES_QUOTA
+ 4, 0);
1387 error
= gfs2_trans_begin(sdp
, 4 * RES_DINODE
+
1388 5 * RES_LEAF
+ 4, 0);
1393 /* Remove the target file, if it exists */
1396 struct buffer_head
*bh
;
1397 error
= gfs2_meta_inode_buffer(nip
, &bh
);
1400 error
= gfs2_unlink_inode(ndip
, ndentry
, bh
);
1405 error
= gfs2_dir_mvino(ip
, &gfs2_qdotdot
, ndip
, DT_DIR
);
1409 struct buffer_head
*dibh
;
1410 error
= gfs2_meta_inode_buffer(ip
, &dibh
);
1413 ip
->i_inode
.i_ctime
= CURRENT_TIME
;
1414 gfs2_trans_add_bh(ip
->i_gl
, dibh
, 1);
1415 gfs2_dinode_out(ip
, dibh
->b_data
);
1419 error
= gfs2_dir_del(odip
, odentry
);
1423 error
= gfs2_dir_add(ndir
, &ndentry
->d_name
, ip
);
1428 gfs2_trans_end(sdp
);
1431 gfs2_inplace_release(ndip
);
1434 gfs2_quota_unlock(ndip
);
1437 gfs2_glock_dq(ghs
+ x
);
1438 gfs2_holder_uninit(ghs
+ x
);
1442 gfs2_glock_dq_uninit(&r_gh
);
1448 * gfs2_follow_link - Follow a symbolic link
1449 * @dentry: The dentry of the link
1450 * @nd: Data that we pass to vfs_follow_link()
1452 * This can handle symlinks of any size.
1454 * Returns: 0 on success or error code
1457 static void *gfs2_follow_link(struct dentry
*dentry
, struct nameidata
*nd
)
1459 struct gfs2_inode
*ip
= GFS2_I(dentry
->d_inode
);
1460 struct gfs2_holder i_gh
;
1461 struct buffer_head
*dibh
;
1466 gfs2_holder_init(ip
->i_gl
, LM_ST_SHARED
, 0, &i_gh
);
1467 error
= gfs2_glock_nq(&i_gh
);
1469 gfs2_holder_uninit(&i_gh
);
1470 nd_set_link(nd
, ERR_PTR(error
));
1474 size
= (unsigned int)i_size_read(&ip
->i_inode
);
1476 gfs2_consist_inode(ip
);
1477 buf
= ERR_PTR(-EIO
);
1481 error
= gfs2_meta_inode_buffer(ip
, &dibh
);
1483 buf
= ERR_PTR(error
);
1487 buf
= kzalloc(size
+ 1, GFP_NOFS
);
1489 buf
= ERR_PTR(-ENOMEM
);
1491 memcpy(buf
, dibh
->b_data
+ sizeof(struct gfs2_dinode
), size
);
1494 gfs2_glock_dq_uninit(&i_gh
);
1495 nd_set_link(nd
, buf
);
1499 static void gfs2_put_link(struct dentry
*dentry
, struct nameidata
*nd
, void *p
)
1501 char *s
= nd_get_link(nd
);
1509 * @mask: The mask to be tested
1510 * @flags: Indicates whether this is an RCU path walk or not
1512 * This may be called from the VFS directly, or from within GFS2 with the
1513 * inode locked, so we look to see if the glock is already locked and only
1514 * lock the glock if its not already been done.
1519 int gfs2_permission(struct inode
*inode
, int mask
)
1521 struct gfs2_inode
*ip
;
1522 struct gfs2_holder i_gh
;
1528 if (gfs2_glock_is_locked_by_me(ip
->i_gl
) == NULL
) {
1529 if (mask
& MAY_NOT_BLOCK
)
1531 error
= gfs2_glock_nq_init(ip
->i_gl
, LM_ST_SHARED
, LM_FLAG_ANY
, &i_gh
);
1537 if ((mask
& MAY_WRITE
) && IS_IMMUTABLE(inode
))
1540 error
= generic_permission(inode
, mask
);
1542 gfs2_glock_dq_uninit(&i_gh
);
1547 static int __gfs2_setattr_simple(struct inode
*inode
, struct iattr
*attr
)
1549 setattr_copy(inode
, attr
);
1550 mark_inode_dirty(inode
);
1555 * gfs2_setattr_simple -
1562 int gfs2_setattr_simple(struct inode
*inode
, struct iattr
*attr
)
1566 if (current
->journal_info
)
1567 return __gfs2_setattr_simple(inode
, attr
);
1569 error
= gfs2_trans_begin(GFS2_SB(inode
), RES_DINODE
, 0);
1573 error
= __gfs2_setattr_simple(inode
, attr
);
1574 gfs2_trans_end(GFS2_SB(inode
));
1578 static int setattr_chown(struct inode
*inode
, struct iattr
*attr
)
1580 struct gfs2_inode
*ip
= GFS2_I(inode
);
1581 struct gfs2_sbd
*sdp
= GFS2_SB(inode
);
1582 u32 ouid
, ogid
, nuid
, ngid
;
1585 ouid
= inode
->i_uid
;
1586 ogid
= inode
->i_gid
;
1587 nuid
= attr
->ia_uid
;
1588 ngid
= attr
->ia_gid
;
1590 if (!(attr
->ia_valid
& ATTR_UID
) || ouid
== nuid
)
1591 ouid
= nuid
= NO_QUOTA_CHANGE
;
1592 if (!(attr
->ia_valid
& ATTR_GID
) || ogid
== ngid
)
1593 ogid
= ngid
= NO_QUOTA_CHANGE
;
1595 error
= gfs2_quota_lock(ip
, nuid
, ngid
);
1599 if (ouid
!= NO_QUOTA_CHANGE
|| ogid
!= NO_QUOTA_CHANGE
) {
1600 error
= gfs2_quota_check(ip
, nuid
, ngid
);
1605 error
= gfs2_trans_begin(sdp
, RES_DINODE
+ 2 * RES_QUOTA
, 0);
1609 error
= gfs2_setattr_simple(inode
, attr
);
1613 if (ouid
!= NO_QUOTA_CHANGE
|| ogid
!= NO_QUOTA_CHANGE
) {
1614 u64 blocks
= gfs2_get_inode_blocks(&ip
->i_inode
);
1615 gfs2_quota_change(ip
, -blocks
, ouid
, ogid
);
1616 gfs2_quota_change(ip
, blocks
, nuid
, ngid
);
1620 gfs2_trans_end(sdp
);
1622 gfs2_quota_unlock(ip
);
1627 * gfs2_setattr - Change attributes on an inode
1628 * @dentry: The dentry which is changing
1629 * @attr: The structure describing the change
1631 * The VFS layer wants to change one or more of an inodes attributes. Write
1632 * that change out to disk.
1637 static int gfs2_setattr(struct dentry
*dentry
, struct iattr
*attr
)
1639 struct inode
*inode
= dentry
->d_inode
;
1640 struct gfs2_inode
*ip
= GFS2_I(inode
);
1641 struct gfs2_holder i_gh
;
1644 error
= gfs2_rs_alloc(ip
);
1648 error
= gfs2_glock_nq_init(ip
->i_gl
, LM_ST_EXCLUSIVE
, 0, &i_gh
);
1653 if (IS_IMMUTABLE(inode
) || IS_APPEND(inode
))
1656 error
= inode_change_ok(inode
, attr
);
1660 if (attr
->ia_valid
& ATTR_SIZE
)
1661 error
= gfs2_setattr_size(inode
, attr
->ia_size
);
1662 else if (attr
->ia_valid
& (ATTR_UID
| ATTR_GID
))
1663 error
= setattr_chown(inode
, attr
);
1664 else if ((attr
->ia_valid
& ATTR_MODE
) && IS_POSIXACL(inode
))
1665 error
= gfs2_acl_chmod(ip
, attr
);
1667 error
= gfs2_setattr_simple(inode
, attr
);
1671 mark_inode_dirty(inode
);
1672 gfs2_glock_dq_uninit(&i_gh
);
1677 * gfs2_getattr - Read out an inode's attributes
1678 * @mnt: The vfsmount the inode is being accessed from
1679 * @dentry: The dentry to stat
1680 * @stat: The inode's stats
1682 * This may be called from the VFS directly, or from within GFS2 with the
1683 * inode locked, so we look to see if the glock is already locked and only
1684 * lock the glock if its not already been done. Note that its the NFS
1685 * readdirplus operation which causes this to be called (from filldir)
1686 * with the glock already held.
1691 static int gfs2_getattr(struct vfsmount
*mnt
, struct dentry
*dentry
,
1694 struct inode
*inode
= dentry
->d_inode
;
1695 struct gfs2_inode
*ip
= GFS2_I(inode
);
1696 struct gfs2_holder gh
;
1700 if (gfs2_glock_is_locked_by_me(ip
->i_gl
) == NULL
) {
1701 error
= gfs2_glock_nq_init(ip
->i_gl
, LM_ST_SHARED
, LM_FLAG_ANY
, &gh
);
1707 generic_fillattr(inode
, stat
);
1709 gfs2_glock_dq_uninit(&gh
);
1714 static int gfs2_setxattr(struct dentry
*dentry
, const char *name
,
1715 const void *data
, size_t size
, int flags
)
1717 struct inode
*inode
= dentry
->d_inode
;
1718 struct gfs2_inode
*ip
= GFS2_I(inode
);
1719 struct gfs2_holder gh
;
1722 gfs2_holder_init(ip
->i_gl
, LM_ST_EXCLUSIVE
, 0, &gh
);
1723 ret
= gfs2_glock_nq(&gh
);
1725 ret
= gfs2_rs_alloc(ip
);
1727 ret
= generic_setxattr(dentry
, name
, data
, size
, flags
);
1730 gfs2_holder_uninit(&gh
);
1734 static ssize_t
gfs2_getxattr(struct dentry
*dentry
, const char *name
,
1735 void *data
, size_t size
)
1737 struct inode
*inode
= dentry
->d_inode
;
1738 struct gfs2_inode
*ip
= GFS2_I(inode
);
1739 struct gfs2_holder gh
;
1742 gfs2_holder_init(ip
->i_gl
, LM_ST_SHARED
, LM_FLAG_ANY
, &gh
);
1743 ret
= gfs2_glock_nq(&gh
);
1745 ret
= generic_getxattr(dentry
, name
, data
, size
);
1748 gfs2_holder_uninit(&gh
);
1752 static int gfs2_removexattr(struct dentry
*dentry
, const char *name
)
1754 struct inode
*inode
= dentry
->d_inode
;
1755 struct gfs2_inode
*ip
= GFS2_I(inode
);
1756 struct gfs2_holder gh
;
1759 gfs2_holder_init(ip
->i_gl
, LM_ST_EXCLUSIVE
, 0, &gh
);
1760 ret
= gfs2_glock_nq(&gh
);
1762 ret
= gfs2_rs_alloc(ip
);
1764 ret
= generic_removexattr(dentry
, name
);
1767 gfs2_holder_uninit(&gh
);
1771 static int gfs2_fiemap(struct inode
*inode
, struct fiemap_extent_info
*fieinfo
,
1774 struct gfs2_inode
*ip
= GFS2_I(inode
);
1775 struct gfs2_holder gh
;
1778 ret
= fiemap_check_flags(fieinfo
, FIEMAP_FLAG_SYNC
);
1782 mutex_lock(&inode
->i_mutex
);
1784 ret
= gfs2_glock_nq_init(ip
->i_gl
, LM_ST_SHARED
, 0, &gh
);
1788 if (gfs2_is_stuffed(ip
)) {
1789 u64 phys
= ip
->i_no_addr
<< inode
->i_blkbits
;
1790 u64 size
= i_size_read(inode
);
1791 u32 flags
= FIEMAP_EXTENT_LAST
|FIEMAP_EXTENT_NOT_ALIGNED
|
1792 FIEMAP_EXTENT_DATA_INLINE
;
1793 phys
+= sizeof(struct gfs2_dinode
);
1795 if (start
+ len
> size
)
1798 ret
= fiemap_fill_next_extent(fieinfo
, start
, phys
,
1803 ret
= __generic_block_fiemap(inode
, fieinfo
, start
, len
,
1807 gfs2_glock_dq_uninit(&gh
);
1809 mutex_unlock(&inode
->i_mutex
);
1813 const struct inode_operations gfs2_file_iops
= {
1814 .permission
= gfs2_permission
,
1815 .setattr
= gfs2_setattr
,
1816 .getattr
= gfs2_getattr
,
1817 .setxattr
= gfs2_setxattr
,
1818 .getxattr
= gfs2_getxattr
,
1819 .listxattr
= gfs2_listxattr
,
1820 .removexattr
= gfs2_removexattr
,
1821 .fiemap
= gfs2_fiemap
,
1822 .get_acl
= gfs2_get_acl
,
1825 const struct inode_operations gfs2_dir_iops
= {
1826 .create
= gfs2_create
,
1827 .lookup
= gfs2_lookup
,
1829 .unlink
= gfs2_unlink
,
1830 .symlink
= gfs2_symlink
,
1831 .mkdir
= gfs2_mkdir
,
1832 .rmdir
= gfs2_unlink
,
1833 .mknod
= gfs2_mknod
,
1834 .rename
= gfs2_rename
,
1835 .permission
= gfs2_permission
,
1836 .setattr
= gfs2_setattr
,
1837 .getattr
= gfs2_getattr
,
1838 .setxattr
= gfs2_setxattr
,
1839 .getxattr
= gfs2_getxattr
,
1840 .listxattr
= gfs2_listxattr
,
1841 .removexattr
= gfs2_removexattr
,
1842 .fiemap
= gfs2_fiemap
,
1843 .get_acl
= gfs2_get_acl
,
1846 const struct inode_operations gfs2_symlink_iops
= {
1847 .readlink
= generic_readlink
,
1848 .follow_link
= gfs2_follow_link
,
1849 .put_link
= gfs2_put_link
,
1850 .permission
= gfs2_permission
,
1851 .setattr
= gfs2_setattr
,
1852 .getattr
= gfs2_getattr
,
1853 .setxattr
= gfs2_setxattr
,
1854 .getxattr
= gfs2_getxattr
,
1855 .listxattr
= gfs2_listxattr
,
1856 .removexattr
= gfs2_removexattr
,
1857 .fiemap
= gfs2_fiemap
,
1858 .get_acl
= gfs2_get_acl
,