2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2008 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/posix_acl.h>
16 #include <linux/sort.h>
17 #include <linux/gfs2_ondisk.h>
18 #include <linux/crc32.h>
19 #include <linux/security.h>
20 #include <linux/time.h>
38 struct gfs2_inum_range_host
{
43 static int iget_test(struct inode
*inode
, void *opaque
)
45 struct gfs2_inode
*ip
= GFS2_I(inode
);
46 u64
*no_addr
= opaque
;
48 if (ip
->i_no_addr
== *no_addr
)
54 static int iget_set(struct inode
*inode
, void *opaque
)
56 struct gfs2_inode
*ip
= GFS2_I(inode
);
57 u64
*no_addr
= opaque
;
59 inode
->i_ino
= (unsigned long)*no_addr
;
60 ip
->i_no_addr
= *no_addr
;
64 struct inode
*gfs2_ilookup(struct super_block
*sb
, u64 no_addr
)
66 unsigned long hash
= (unsigned long)no_addr
;
67 return ilookup5(sb
, hash
, iget_test
, &no_addr
);
70 static struct inode
*gfs2_iget(struct super_block
*sb
, u64 no_addr
)
72 unsigned long hash
= (unsigned long)no_addr
;
73 return iget5_locked(sb
, hash
, iget_test
, iget_set
, &no_addr
);
76 struct gfs2_skip_data
{
81 static int iget_skip_test(struct inode
*inode
, void *opaque
)
83 struct gfs2_inode
*ip
= GFS2_I(inode
);
84 struct gfs2_skip_data
*data
= opaque
;
86 if (ip
->i_no_addr
== data
->no_addr
) {
87 if (inode
->i_state
& (I_FREEING
|I_CLEAR
|I_WILL_FREE
)){
96 static int iget_skip_set(struct inode
*inode
, void *opaque
)
98 struct gfs2_inode
*ip
= GFS2_I(inode
);
99 struct gfs2_skip_data
*data
= opaque
;
103 inode
->i_ino
= (unsigned long)(data
->no_addr
);
104 ip
->i_no_addr
= data
->no_addr
;
108 static struct inode
*gfs2_iget_skip(struct super_block
*sb
,
111 struct gfs2_skip_data data
;
112 unsigned long hash
= (unsigned long)no_addr
;
114 data
.no_addr
= no_addr
;
116 return iget5_locked(sb
, hash
, iget_skip_test
, iget_skip_set
, &data
);
120 * GFS2 lookup code fills in vfs inode contents based on info obtained
121 * from directory entry inside gfs2_inode_lookup(). This has caused issues
122 * with NFS code path since its get_dentry routine doesn't have the relevant
123 * directory entry when gfs2_inode_lookup() is invoked. Part of the code
124 * segment inside gfs2_inode_lookup code needs to get moved around.
126 * Clears I_NEW as well.
129 void gfs2_set_iop(struct inode
*inode
)
131 struct gfs2_sbd
*sdp
= GFS2_SB(inode
);
132 umode_t mode
= inode
->i_mode
;
135 inode
->i_op
= &gfs2_file_iops
;
136 if (gfs2_localflocks(sdp
))
137 inode
->i_fop
= &gfs2_file_fops_nolock
;
139 inode
->i_fop
= &gfs2_file_fops
;
140 } else if (S_ISDIR(mode
)) {
141 inode
->i_op
= &gfs2_dir_iops
;
142 if (gfs2_localflocks(sdp
))
143 inode
->i_fop
= &gfs2_dir_fops_nolock
;
145 inode
->i_fop
= &gfs2_dir_fops
;
146 } else if (S_ISLNK(mode
)) {
147 inode
->i_op
= &gfs2_symlink_iops
;
149 inode
->i_op
= &gfs2_file_iops
;
150 init_special_inode(inode
, inode
->i_mode
, inode
->i_rdev
);
153 unlock_new_inode(inode
);
157 * gfs2_inode_lookup - Lookup an inode
158 * @sb: The super block
159 * @no_addr: The inode number
160 * @type: The type of the inode
162 * Returns: A VFS inode, or an error
165 struct inode
*gfs2_inode_lookup(struct super_block
*sb
,
171 struct gfs2_inode
*ip
;
172 struct gfs2_glock
*io_gl
;
175 inode
= gfs2_iget(sb
, no_addr
);
179 return ERR_PTR(-ENOBUFS
);
181 if (inode
->i_state
& I_NEW
) {
182 struct gfs2_sbd
*sdp
= GFS2_SB(inode
);
183 ip
->i_no_formal_ino
= no_formal_ino
;
185 error
= gfs2_glock_get(sdp
, no_addr
, &gfs2_inode_glops
, CREATE
, &ip
->i_gl
);
188 ip
->i_gl
->gl_object
= ip
;
190 error
= gfs2_glock_get(sdp
, no_addr
, &gfs2_iopen_glops
, CREATE
, &io_gl
);
194 set_bit(GIF_INVALID
, &ip
->i_flags
);
195 error
= gfs2_glock_nq_init(io_gl
, LM_ST_SHARED
, GL_EXACT
, &ip
->i_iopen_gh
);
198 ip
->i_iopen_gh
.gh_gl
->gl_object
= ip
;
200 gfs2_glock_put(io_gl
);
202 if ((type
== DT_UNKNOWN
) && (no_formal_ino
== 0))
205 inode
->i_mode
= DT2IF(type
);
208 * We must read the inode in order to work out its type in
209 * this case. Note that this doesn't happen often as we normally
210 * know the type beforehand. This code path only occurs during
211 * unlinked inode recovery (where it is safe to do this glock,
212 * which is not true in the general case).
214 if (type
== DT_UNKNOWN
) {
215 struct gfs2_holder gh
;
216 error
= gfs2_glock_nq_init(ip
->i_gl
, LM_ST_EXCLUSIVE
, 0, &gh
);
219 /* Inode is now uptodate */
220 gfs2_glock_dq_uninit(&gh
);
229 gfs2_glock_dq(&ip
->i_iopen_gh
);
231 gfs2_glock_put(io_gl
);
233 if (inode
->i_state
& I_NEW
)
234 ip
->i_gl
->gl_object
= NULL
;
235 gfs2_glock_put(ip
->i_gl
);
237 if (inode
->i_state
& I_NEW
)
241 return ERR_PTR(error
);
245 * gfs2_unlinked_inode_lookup - Lookup an unlinked inode for reclamation
246 * @sb: The super block
247 * no_addr: The inode number
248 * @@inode: A pointer to the inode found, if any
250 * Returns: 0 and *inode if no errors occurred. If an error occurs,
251 * the resulting *inode may or may not be NULL.
254 int gfs2_unlinked_inode_lookup(struct super_block
*sb
, u64 no_addr
,
255 struct inode
**inode
)
257 struct gfs2_sbd
*sdp
;
258 struct gfs2_inode
*ip
;
259 struct gfs2_glock
*io_gl
;
261 struct gfs2_holder gh
;
263 *inode
= gfs2_iget_skip(sb
, no_addr
);
268 if (!((*inode
)->i_state
& I_NEW
))
272 sdp
= GFS2_SB(*inode
);
273 ip
->i_no_formal_ino
= -1;
275 error
= gfs2_glock_get(sdp
, no_addr
, &gfs2_inode_glops
, CREATE
, &ip
->i_gl
);
278 ip
->i_gl
->gl_object
= ip
;
280 error
= gfs2_glock_get(sdp
, no_addr
, &gfs2_iopen_glops
, CREATE
, &io_gl
);
284 set_bit(GIF_INVALID
, &ip
->i_flags
);
285 error
= gfs2_glock_nq_init(io_gl
, LM_ST_SHARED
, LM_FLAG_TRY
| GL_EXACT
,
287 if (unlikely(error
)) {
288 if (error
== GLR_TRYFAILED
)
292 ip
->i_iopen_gh
.gh_gl
->gl_object
= ip
;
293 gfs2_glock_put(io_gl
);
295 (*inode
)->i_mode
= DT2IF(DT_UNKNOWN
);
298 * We must read the inode in order to work out its type in
299 * this case. Note that this doesn't happen often as we normally
300 * know the type beforehand. This code path only occurs during
301 * unlinked inode recovery (where it is safe to do this glock,
302 * which is not true in the general case).
304 error
= gfs2_glock_nq_init(ip
->i_gl
, LM_ST_EXCLUSIVE
, LM_FLAG_TRY
,
306 if (unlikely(error
)) {
307 if (error
== GLR_TRYFAILED
)
311 /* Inode is now uptodate */
312 gfs2_glock_dq_uninit(&gh
);
313 gfs2_set_iop(*inode
);
317 gfs2_glock_dq(&ip
->i_iopen_gh
);
319 gfs2_glock_put(io_gl
);
321 ip
->i_gl
->gl_object
= NULL
;
322 gfs2_glock_put(ip
->i_gl
);
327 static int gfs2_dinode_in(struct gfs2_inode
*ip
, const void *buf
)
329 const struct gfs2_dinode
*str
= buf
;
330 struct timespec atime
;
333 if (unlikely(ip
->i_no_addr
!= be64_to_cpu(str
->di_num
.no_addr
)))
335 ip
->i_no_formal_ino
= be64_to_cpu(str
->di_num
.no_formal_ino
);
336 ip
->i_inode
.i_mode
= be32_to_cpu(str
->di_mode
);
337 ip
->i_inode
.i_rdev
= 0;
338 switch (ip
->i_inode
.i_mode
& S_IFMT
) {
341 ip
->i_inode
.i_rdev
= MKDEV(be32_to_cpu(str
->di_major
),
342 be32_to_cpu(str
->di_minor
));
346 ip
->i_inode
.i_uid
= be32_to_cpu(str
->di_uid
);
347 ip
->i_inode
.i_gid
= be32_to_cpu(str
->di_gid
);
349 * We will need to review setting the nlink count here in the
350 * light of the forthcoming ro bind mount work. This is a reminder
353 ip
->i_inode
.i_nlink
= be32_to_cpu(str
->di_nlink
);
354 ip
->i_disksize
= be64_to_cpu(str
->di_size
);
355 i_size_write(&ip
->i_inode
, ip
->i_disksize
);
356 gfs2_set_inode_blocks(&ip
->i_inode
, be64_to_cpu(str
->di_blocks
));
357 atime
.tv_sec
= be64_to_cpu(str
->di_atime
);
358 atime
.tv_nsec
= be32_to_cpu(str
->di_atime_nsec
);
359 if (timespec_compare(&ip
->i_inode
.i_atime
, &atime
) < 0)
360 ip
->i_inode
.i_atime
= atime
;
361 ip
->i_inode
.i_mtime
.tv_sec
= be64_to_cpu(str
->di_mtime
);
362 ip
->i_inode
.i_mtime
.tv_nsec
= be32_to_cpu(str
->di_mtime_nsec
);
363 ip
->i_inode
.i_ctime
.tv_sec
= be64_to_cpu(str
->di_ctime
);
364 ip
->i_inode
.i_ctime
.tv_nsec
= be32_to_cpu(str
->di_ctime_nsec
);
366 ip
->i_goal
= be64_to_cpu(str
->di_goal_meta
);
367 ip
->i_generation
= be64_to_cpu(str
->di_generation
);
369 ip
->i_diskflags
= be32_to_cpu(str
->di_flags
);
370 gfs2_set_inode_flags(&ip
->i_inode
);
371 height
= be16_to_cpu(str
->di_height
);
372 if (unlikely(height
> GFS2_MAX_META_HEIGHT
))
374 ip
->i_height
= (u8
)height
;
376 depth
= be16_to_cpu(str
->di_depth
);
377 if (unlikely(depth
> GFS2_DIR_MAX_DEPTH
))
379 ip
->i_depth
= (u8
)depth
;
380 ip
->i_entries
= be32_to_cpu(str
->di_entries
);
382 ip
->i_eattr
= be64_to_cpu(str
->di_eattr
);
383 if (S_ISREG(ip
->i_inode
.i_mode
))
384 gfs2_set_aops(&ip
->i_inode
);
388 if (gfs2_consist_inode(ip
))
389 gfs2_dinode_print(ip
);
394 * gfs2_inode_refresh - Refresh the incore copy of the dinode
395 * @ip: The GFS2 inode
400 int gfs2_inode_refresh(struct gfs2_inode
*ip
)
402 struct buffer_head
*dibh
;
405 error
= gfs2_meta_inode_buffer(ip
, &dibh
);
409 if (gfs2_metatype_check(GFS2_SB(&ip
->i_inode
), dibh
, GFS2_METATYPE_DI
)) {
414 error
= gfs2_dinode_in(ip
, dibh
->b_data
);
416 clear_bit(GIF_INVALID
, &ip
->i_flags
);
421 int gfs2_dinode_dealloc(struct gfs2_inode
*ip
)
423 struct gfs2_sbd
*sdp
= GFS2_SB(&ip
->i_inode
);
424 struct gfs2_alloc
*al
;
425 struct gfs2_rgrpd
*rgd
;
428 if (gfs2_get_inode_blocks(&ip
->i_inode
) != 1) {
429 if (gfs2_consist_inode(ip
))
430 gfs2_dinode_print(ip
);
434 al
= gfs2_alloc_get(ip
);
438 error
= gfs2_quota_hold(ip
, NO_QUOTA_CHANGE
, NO_QUOTA_CHANGE
);
442 error
= gfs2_rindex_hold(sdp
, &al
->al_ri_gh
);
446 rgd
= gfs2_blk2rgrpd(sdp
, ip
->i_no_addr
);
448 gfs2_consist_inode(ip
);
450 goto out_rindex_relse
;
453 error
= gfs2_glock_nq_init(rgd
->rd_gl
, LM_ST_EXCLUSIVE
, 0,
456 goto out_rindex_relse
;
458 error
= gfs2_trans_begin(sdp
, RES_RG_BIT
+ RES_STATFS
+ RES_QUOTA
, 1);
462 set_bit(GLF_DIRTY
, &ip
->i_gl
->gl_flags
);
463 set_bit(GLF_LFLUSH
, &ip
->i_gl
->gl_flags
);
465 gfs2_free_di(rgd
, ip
);
470 gfs2_glock_dq_uninit(&al
->al_rgd_gh
);
472 gfs2_glock_dq_uninit(&al
->al_ri_gh
);
474 gfs2_quota_unhold(ip
);
481 * gfs2_change_nlink - Change nlink count on inode
482 * @ip: The GFS2 inode
483 * @diff: The change in the nlink count required
487 int gfs2_change_nlink(struct gfs2_inode
*ip
, int diff
)
489 struct buffer_head
*dibh
;
493 BUG_ON(diff
!= 1 && diff
!= -1);
494 nlink
= ip
->i_inode
.i_nlink
+ diff
;
496 /* If we are reducing the nlink count, but the new value ends up being
497 bigger than the old one, we must have underflowed. */
498 if (diff
< 0 && nlink
> ip
->i_inode
.i_nlink
) {
499 if (gfs2_consist_inode(ip
))
500 gfs2_dinode_print(ip
);
504 error
= gfs2_meta_inode_buffer(ip
, &dibh
);
509 inc_nlink(&ip
->i_inode
);
511 drop_nlink(&ip
->i_inode
);
513 ip
->i_inode
.i_ctime
= CURRENT_TIME
;
515 gfs2_trans_add_bh(ip
->i_gl
, dibh
, 1);
516 gfs2_dinode_out(ip
, dibh
->b_data
);
518 mark_inode_dirty(&ip
->i_inode
);
520 if (ip
->i_inode
.i_nlink
== 0)
521 gfs2_unlink_di(&ip
->i_inode
); /* mark inode unlinked */
526 struct inode
*gfs2_lookup_simple(struct inode
*dip
, const char *name
)
530 gfs2_str2qstr(&qstr
, name
);
531 inode
= gfs2_lookupi(dip
, &qstr
, 1);
532 /* gfs2_lookupi has inconsistent callers: vfs
533 * related routines expect NULL for no entry found,
534 * gfs2_lookup_simple callers expect ENOENT
535 * and do not check for NULL.
538 return ERR_PTR(-ENOENT
);
545 * gfs2_lookupi - Look up a filename in a directory and return its inode
546 * @d_gh: An initialized holder for the directory glock
547 * @name: The name of the inode to look for
548 * @is_root: If 1, ignore the caller's permissions
549 * @i_gh: An uninitialized holder for the new inode glock
551 * This can be called via the VFS filldir function when NFS is doing
552 * a readdirplus and the inode which its intending to stat isn't
553 * already in cache. In this case we must not take the directory glock
554 * again, since the readdir call will have already taken that lock.
559 struct inode
*gfs2_lookupi(struct inode
*dir
, const struct qstr
*name
,
562 struct super_block
*sb
= dir
->i_sb
;
563 struct gfs2_inode
*dip
= GFS2_I(dir
);
564 struct gfs2_holder d_gh
;
566 struct inode
*inode
= NULL
;
569 if (!name
->len
|| name
->len
> GFS2_FNAMESIZE
)
570 return ERR_PTR(-ENAMETOOLONG
);
572 if ((name
->len
== 1 && memcmp(name
->name
, ".", 1) == 0) ||
573 (name
->len
== 2 && memcmp(name
->name
, "..", 2) == 0 &&
574 dir
== sb
->s_root
->d_inode
)) {
579 if (gfs2_glock_is_locked_by_me(dip
->i_gl
) == NULL
) {
580 error
= gfs2_glock_nq_init(dip
->i_gl
, LM_ST_SHARED
, 0, &d_gh
);
582 return ERR_PTR(error
);
587 error
= gfs2_permission(dir
, MAY_EXEC
);
592 inode
= gfs2_dir_search(dir
, name
);
594 error
= PTR_ERR(inode
);
597 gfs2_glock_dq_uninit(&d_gh
);
598 if (error
== -ENOENT
)
600 return inode
? inode
: ERR_PTR(error
);
604 * create_ok - OK to create a new on-disk inode here?
605 * @dip: Directory in which dinode is to be created
606 * @name: Name of new dinode
612 static int create_ok(struct gfs2_inode
*dip
, const struct qstr
*name
,
617 error
= gfs2_permission(&dip
->i_inode
, MAY_WRITE
| MAY_EXEC
);
621 /* Don't create entries in an unlinked directory */
622 if (!dip
->i_inode
.i_nlink
)
625 error
= gfs2_dir_check(&dip
->i_inode
, name
, NULL
);
636 if (dip
->i_entries
== (u32
)-1)
638 if (S_ISDIR(mode
) && dip
->i_inode
.i_nlink
== (u32
)-1)
644 static void munge_mode_uid_gid(struct gfs2_inode
*dip
, unsigned int *mode
,
645 unsigned int *uid
, unsigned int *gid
)
647 if (GFS2_SB(&dip
->i_inode
)->sd_args
.ar_suiddir
&&
648 (dip
->i_inode
.i_mode
& S_ISUID
) && dip
->i_inode
.i_uid
) {
651 else if (dip
->i_inode
.i_uid
!= current_fsuid())
653 *uid
= dip
->i_inode
.i_uid
;
655 *uid
= current_fsuid();
657 if (dip
->i_inode
.i_mode
& S_ISGID
) {
660 *gid
= dip
->i_inode
.i_gid
;
662 *gid
= current_fsgid();
665 static int alloc_dinode(struct gfs2_inode
*dip
, u64
*no_addr
, u64
*generation
)
667 struct gfs2_sbd
*sdp
= GFS2_SB(&dip
->i_inode
);
670 if (gfs2_alloc_get(dip
) == NULL
)
673 dip
->i_alloc
->al_requested
= RES_DINODE
;
674 error
= gfs2_inplace_reserve(dip
);
678 error
= gfs2_trans_begin(sdp
, RES_RG_BIT
+ RES_STATFS
, 0);
682 error
= gfs2_alloc_di(dip
, no_addr
, generation
);
687 gfs2_inplace_release(dip
);
694 * init_dinode - Fill in a new dinode structure
695 * @dip: the directory this inode is being created in
696 * @gl: The glock covering the new inode
697 * @inum: the inode number
698 * @mode: the file permissions
704 static void init_dinode(struct gfs2_inode
*dip
, struct gfs2_glock
*gl
,
705 const struct gfs2_inum_host
*inum
, unsigned int mode
,
706 unsigned int uid
, unsigned int gid
,
707 const u64
*generation
, dev_t dev
, struct buffer_head
**bhp
)
709 struct gfs2_sbd
*sdp
= GFS2_SB(&dip
->i_inode
);
710 struct gfs2_dinode
*di
;
711 struct buffer_head
*dibh
;
712 struct timespec tv
= CURRENT_TIME
;
714 dibh
= gfs2_meta_new(gl
, inum
->no_addr
);
715 gfs2_trans_add_bh(gl
, dibh
, 1);
716 gfs2_metatype_set(dibh
, GFS2_METATYPE_DI
, GFS2_FORMAT_DI
);
717 gfs2_buffer_clear_tail(dibh
, sizeof(struct gfs2_dinode
));
718 di
= (struct gfs2_dinode
*)dibh
->b_data
;
720 di
->di_num
.no_formal_ino
= cpu_to_be64(inum
->no_formal_ino
);
721 di
->di_num
.no_addr
= cpu_to_be64(inum
->no_addr
);
722 di
->di_mode
= cpu_to_be32(mode
);
723 di
->di_uid
= cpu_to_be32(uid
);
724 di
->di_gid
= cpu_to_be32(gid
);
727 di
->di_blocks
= cpu_to_be64(1);
728 di
->di_atime
= di
->di_mtime
= di
->di_ctime
= cpu_to_be64(tv
.tv_sec
);
729 di
->di_major
= cpu_to_be32(MAJOR(dev
));
730 di
->di_minor
= cpu_to_be32(MINOR(dev
));
731 di
->di_goal_meta
= di
->di_goal_data
= cpu_to_be64(inum
->no_addr
);
732 di
->di_generation
= cpu_to_be64(*generation
);
736 if ((dip
->i_diskflags
& GFS2_DIF_INHERIT_JDATA
) ||
737 gfs2_tune_get(sdp
, gt_new_files_jdata
))
738 di
->di_flags
|= cpu_to_be32(GFS2_DIF_JDATA
);
739 } else if (S_ISDIR(mode
)) {
740 di
->di_flags
|= cpu_to_be32(dip
->i_diskflags
&
741 GFS2_DIF_INHERIT_JDATA
);
745 di
->di_payload_format
= cpu_to_be32(S_ISDIR(mode
) ? GFS2_FORMAT_DE
: 0);
751 memset(&di
->__pad4
, 0, sizeof(di
->__pad4
));
753 di
->di_atime_nsec
= cpu_to_be32(tv
.tv_nsec
);
754 di
->di_mtime_nsec
= cpu_to_be32(tv
.tv_nsec
);
755 di
->di_ctime_nsec
= cpu_to_be32(tv
.tv_nsec
);
756 memset(&di
->di_reserved
, 0, sizeof(di
->di_reserved
));
758 set_buffer_uptodate(dibh
);
763 static int make_dinode(struct gfs2_inode
*dip
, struct gfs2_glock
*gl
,
764 unsigned int mode
, const struct gfs2_inum_host
*inum
,
765 const u64
*generation
, dev_t dev
, struct buffer_head
**bhp
)
767 struct gfs2_sbd
*sdp
= GFS2_SB(&dip
->i_inode
);
768 unsigned int uid
, gid
;
771 munge_mode_uid_gid(dip
, &mode
, &uid
, &gid
);
772 if (!gfs2_alloc_get(dip
))
775 error
= gfs2_quota_lock(dip
, uid
, gid
);
779 error
= gfs2_quota_check(dip
, uid
, gid
);
783 error
= gfs2_trans_begin(sdp
, RES_DINODE
+ RES_QUOTA
, 0);
787 init_dinode(dip
, gl
, inum
, mode
, uid
, gid
, generation
, dev
, bhp
);
788 gfs2_quota_change(dip
, +1, uid
, gid
);
792 gfs2_quota_unlock(dip
);
798 static int link_dinode(struct gfs2_inode
*dip
, const struct qstr
*name
,
799 struct gfs2_inode
*ip
)
801 struct gfs2_sbd
*sdp
= GFS2_SB(&dip
->i_inode
);
802 struct gfs2_alloc
*al
;
804 struct buffer_head
*dibh
;
807 al
= gfs2_alloc_get(dip
);
811 error
= gfs2_quota_lock(dip
, NO_QUOTA_CHANGE
, NO_QUOTA_CHANGE
);
815 error
= alloc_required
= gfs2_diradd_alloc_required(&dip
->i_inode
, name
);
816 if (alloc_required
< 0)
817 goto fail_quota_locks
;
818 if (alloc_required
) {
819 error
= gfs2_quota_check(dip
, dip
->i_inode
.i_uid
, dip
->i_inode
.i_gid
);
821 goto fail_quota_locks
;
823 al
->al_requested
= sdp
->sd_max_dirres
;
825 error
= gfs2_inplace_reserve(dip
);
827 goto fail_quota_locks
;
829 error
= gfs2_trans_begin(sdp
, sdp
->sd_max_dirres
+
830 al
->al_rgd
->rd_length
+
832 RES_STATFS
+ RES_QUOTA
, 0);
836 error
= gfs2_trans_begin(sdp
, RES_LEAF
+ 2 * RES_DINODE
, 0);
838 goto fail_quota_locks
;
841 error
= gfs2_dir_add(&dip
->i_inode
, name
, ip
, IF2DT(ip
->i_inode
.i_mode
));
845 error
= gfs2_meta_inode_buffer(ip
, &dibh
);
848 ip
->i_inode
.i_nlink
= 1;
849 gfs2_trans_add_bh(ip
->i_gl
, dibh
, 1);
850 gfs2_dinode_out(ip
, dibh
->b_data
);
858 if (dip
->i_alloc
->al_rgd
)
859 gfs2_inplace_release(dip
);
862 gfs2_quota_unlock(dip
);
869 static int gfs2_security_init(struct gfs2_inode
*dip
, struct gfs2_inode
*ip
)
876 err
= security_inode_init_security(&ip
->i_inode
, &dip
->i_inode
,
877 &name
, &value
, &len
);
880 if (err
== -EOPNOTSUPP
)
885 err
= __gfs2_xattr_set(&ip
->i_inode
, name
, value
, len
, 0,
886 GFS2_EATYPE_SECURITY
);
894 * gfs2_createi - Create a new inode
895 * @ghs: An array of two holders
896 * @name: The name of the new file
897 * @mode: the permissions on the new inode
899 * @ghs[0] is an initialized holder for the directory
900 * @ghs[1] is the holder for the inode lock
902 * If the return value is not NULL, the glocks on both the directory and the new
903 * file are held. A transaction has been started and an inplace reservation
909 struct inode
*gfs2_createi(struct gfs2_holder
*ghs
, const struct qstr
*name
,
910 unsigned int mode
, dev_t dev
)
912 struct inode
*inode
= NULL
;
913 struct gfs2_inode
*dip
= ghs
->gh_gl
->gl_object
;
914 struct inode
*dir
= &dip
->i_inode
;
915 struct gfs2_sbd
*sdp
= GFS2_SB(&dip
->i_inode
);
916 struct gfs2_inum_host inum
= { .no_addr
= 0, .no_formal_ino
= 0 };
919 struct buffer_head
*bh
= NULL
;
921 if (!name
->len
|| name
->len
> GFS2_FNAMESIZE
)
922 return ERR_PTR(-ENAMETOOLONG
);
924 gfs2_holder_reinit(LM_ST_EXCLUSIVE
, 0, ghs
);
925 error
= gfs2_glock_nq(ghs
);
929 error
= create_ok(dip
, name
, mode
);
933 error
= alloc_dinode(dip
, &inum
.no_addr
, &generation
);
936 inum
.no_formal_ino
= generation
;
938 error
= gfs2_glock_nq_num(sdp
, inum
.no_addr
, &gfs2_inode_glops
,
939 LM_ST_EXCLUSIVE
, GL_SKIP
, ghs
+ 1);
943 error
= make_dinode(dip
, ghs
[1].gh_gl
, mode
, &inum
, &generation
, dev
, &bh
);
947 inode
= gfs2_inode_lookup(dir
->i_sb
, IF2DT(mode
), inum
.no_addr
,
952 error
= gfs2_inode_refresh(GFS2_I(inode
));
956 error
= gfs2_acl_create(dip
, inode
);
960 error
= gfs2_security_init(dip
, GFS2_I(inode
));
964 error
= link_dinode(dip
, name
, GFS2_I(inode
));
973 gfs2_glock_dq_uninit(ghs
+ 1);
974 if (inode
&& !IS_ERR(inode
))
981 return ERR_PTR(error
);
984 static int __gfs2_setattr_simple(struct gfs2_inode
*ip
, struct iattr
*attr
)
986 struct buffer_head
*dibh
;
989 error
= gfs2_meta_inode_buffer(ip
, &dibh
);
991 error
= inode_setattr(&ip
->i_inode
, attr
);
992 gfs2_assert_warn(GFS2_SB(&ip
->i_inode
), !error
);
993 gfs2_trans_add_bh(ip
->i_gl
, dibh
, 1);
994 gfs2_dinode_out(ip
, dibh
->b_data
);
1001 * gfs2_setattr_simple -
1005 * Called with a reference on the vnode.
1010 int gfs2_setattr_simple(struct gfs2_inode
*ip
, struct iattr
*attr
)
1014 if (current
->journal_info
)
1015 return __gfs2_setattr_simple(ip
, attr
);
1017 error
= gfs2_trans_begin(GFS2_SB(&ip
->i_inode
), RES_DINODE
, 0);
1021 error
= __gfs2_setattr_simple(ip
, attr
);
1022 gfs2_trans_end(GFS2_SB(&ip
->i_inode
));
1026 void gfs2_dinode_out(const struct gfs2_inode
*ip
, void *buf
)
1028 struct gfs2_dinode
*str
= buf
;
1030 str
->di_header
.mh_magic
= cpu_to_be32(GFS2_MAGIC
);
1031 str
->di_header
.mh_type
= cpu_to_be32(GFS2_METATYPE_DI
);
1032 str
->di_header
.mh_format
= cpu_to_be32(GFS2_FORMAT_DI
);
1033 str
->di_num
.no_addr
= cpu_to_be64(ip
->i_no_addr
);
1034 str
->di_num
.no_formal_ino
= cpu_to_be64(ip
->i_no_formal_ino
);
1035 str
->di_mode
= cpu_to_be32(ip
->i_inode
.i_mode
);
1036 str
->di_uid
= cpu_to_be32(ip
->i_inode
.i_uid
);
1037 str
->di_gid
= cpu_to_be32(ip
->i_inode
.i_gid
);
1038 str
->di_nlink
= cpu_to_be32(ip
->i_inode
.i_nlink
);
1039 str
->di_size
= cpu_to_be64(ip
->i_disksize
);
1040 str
->di_blocks
= cpu_to_be64(gfs2_get_inode_blocks(&ip
->i_inode
));
1041 str
->di_atime
= cpu_to_be64(ip
->i_inode
.i_atime
.tv_sec
);
1042 str
->di_mtime
= cpu_to_be64(ip
->i_inode
.i_mtime
.tv_sec
);
1043 str
->di_ctime
= cpu_to_be64(ip
->i_inode
.i_ctime
.tv_sec
);
1045 str
->di_goal_meta
= cpu_to_be64(ip
->i_goal
);
1046 str
->di_goal_data
= cpu_to_be64(ip
->i_goal
);
1047 str
->di_generation
= cpu_to_be64(ip
->i_generation
);
1049 str
->di_flags
= cpu_to_be32(ip
->i_diskflags
);
1050 str
->di_height
= cpu_to_be16(ip
->i_height
);
1051 str
->di_payload_format
= cpu_to_be32(S_ISDIR(ip
->i_inode
.i_mode
) &&
1052 !(ip
->i_diskflags
& GFS2_DIF_EXHASH
) ?
1053 GFS2_FORMAT_DE
: 0);
1054 str
->di_depth
= cpu_to_be16(ip
->i_depth
);
1055 str
->di_entries
= cpu_to_be32(ip
->i_entries
);
1057 str
->di_eattr
= cpu_to_be64(ip
->i_eattr
);
1058 str
->di_atime_nsec
= cpu_to_be32(ip
->i_inode
.i_atime
.tv_nsec
);
1059 str
->di_mtime_nsec
= cpu_to_be32(ip
->i_inode
.i_mtime
.tv_nsec
);
1060 str
->di_ctime_nsec
= cpu_to_be32(ip
->i_inode
.i_ctime
.tv_nsec
);
1063 void gfs2_dinode_print(const struct gfs2_inode
*ip
)
1065 printk(KERN_INFO
" no_formal_ino = %llu\n",
1066 (unsigned long long)ip
->i_no_formal_ino
);
1067 printk(KERN_INFO
" no_addr = %llu\n",
1068 (unsigned long long)ip
->i_no_addr
);
1069 printk(KERN_INFO
" i_disksize = %llu\n",
1070 (unsigned long long)ip
->i_disksize
);
1071 printk(KERN_INFO
" blocks = %llu\n",
1072 (unsigned long long)gfs2_get_inode_blocks(&ip
->i_inode
));
1073 printk(KERN_INFO
" i_goal = %llu\n",
1074 (unsigned long long)ip
->i_goal
);
1075 printk(KERN_INFO
" i_diskflags = 0x%.8X\n", ip
->i_diskflags
);
1076 printk(KERN_INFO
" i_height = %u\n", ip
->i_height
);
1077 printk(KERN_INFO
" i_depth = %u\n", ip
->i_depth
);
1078 printk(KERN_INFO
" i_entries = %u\n", ip
->i_entries
);
1079 printk(KERN_INFO
" i_eattr = %llu\n",
1080 (unsigned long long)ip
->i_eattr
);
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