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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>
21
22#include "gfs2.h"
23#include "incore.h"
24#include "acl.h"
25#include "bmap.h"
26#include "dir.h"
27#include "xattr.h"
28#include "glock.h"
29#include "glops.h"
30#include "inode.h"
31#include "log.h"
32#include "meta_io.h"
33#include "quota.h"
34#include "rgrp.h"
35#include "trans.h"
36#include "util.h"
37
38struct gfs2_inum_range_host {
39 u64 ir_start;
40 u64 ir_length;
41};
42
43static int iget_test(struct inode *inode, void *opaque)
44{
45 struct gfs2_inode *ip = GFS2_I(inode);
46 u64 *no_addr = opaque;
47
48 if (ip->i_no_addr == *no_addr && test_bit(GIF_USER, &ip->i_flags))
49 return 1;
50
51 return 0;
52}
53
54static int iget_set(struct inode *inode, void *opaque)
55{
56 struct gfs2_inode *ip = GFS2_I(inode);
57 u64 *no_addr = opaque;
58
59 inode->i_ino = (unsigned long)*no_addr;
60 ip->i_no_addr = *no_addr;
61 set_bit(GIF_USER, &ip->i_flags);
62 return 0;
63}
64
65struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr)
66{
67 unsigned long hash = (unsigned long)no_addr;
68 return ilookup5(sb, hash, iget_test, &no_addr);
69}
70
71static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr)
72{
73 unsigned long hash = (unsigned long)no_addr;
74 return iget5_locked(sb, hash, iget_test, iget_set, &no_addr);
75}
76
77struct gfs2_skip_data {
78 u64 no_addr;
79 int skipped;
80};
81
82static int iget_skip_test(struct inode *inode, void *opaque)
83{
84 struct gfs2_inode *ip = GFS2_I(inode);
85 struct gfs2_skip_data *data = opaque;
86
87 if (ip->i_no_addr == data->no_addr && test_bit(GIF_USER, &ip->i_flags)){
88 if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)){
89 data->skipped = 1;
90 return 0;
91 }
92 return 1;
93 }
94 return 0;
95}
96
97static int iget_skip_set(struct inode *inode, void *opaque)
98{
99 struct gfs2_inode *ip = GFS2_I(inode);
100 struct gfs2_skip_data *data = opaque;
101
102 if (data->skipped)
103 return 1;
104 inode->i_ino = (unsigned long)(data->no_addr);
105 ip->i_no_addr = data->no_addr;
106 set_bit(GIF_USER, &ip->i_flags);
107 return 0;
108}
109
110static struct inode *gfs2_iget_skip(struct super_block *sb,
111 u64 no_addr)
112{
113 struct gfs2_skip_data data;
114 unsigned long hash = (unsigned long)no_addr;
115
116 data.no_addr = no_addr;
117 data.skipped = 0;
118 return iget5_locked(sb, hash, iget_skip_test, iget_skip_set, &data);
119}
120
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122
123
124
125
126
127
128
129
130
131void gfs2_set_iop(struct inode *inode)
132{
133 struct gfs2_sbd *sdp = GFS2_SB(inode);
134 umode_t mode = inode->i_mode;
135
136 if (S_ISREG(mode)) {
137 inode->i_op = &gfs2_file_iops;
138 if (gfs2_localflocks(sdp))
139 inode->i_fop = &gfs2_file_fops_nolock;
140 else
141 inode->i_fop = &gfs2_file_fops;
142 } else if (S_ISDIR(mode)) {
143 inode->i_op = &gfs2_dir_iops;
144 if (gfs2_localflocks(sdp))
145 inode->i_fop = &gfs2_dir_fops_nolock;
146 else
147 inode->i_fop = &gfs2_dir_fops;
148 } else if (S_ISLNK(mode)) {
149 inode->i_op = &gfs2_symlink_iops;
150 } else {
151 inode->i_op = &gfs2_file_iops;
152 init_special_inode(inode, inode->i_mode, inode->i_rdev);
153 }
154
155 unlock_new_inode(inode);
156}
157
158
159
160
161
162
163
164
165
166
167
168struct inode *gfs2_inode_lookup(struct super_block *sb,
169 unsigned int type,
170 u64 no_addr,
171 u64 no_formal_ino, int skip_freeing)
172{
173 struct inode *inode;
174 struct gfs2_inode *ip;
175 struct gfs2_glock *io_gl;
176 int error;
177
178 if (skip_freeing)
179 inode = gfs2_iget_skip(sb, no_addr);
180 else
181 inode = gfs2_iget(sb, no_addr);
182 ip = GFS2_I(inode);
183
184 if (!inode)
185 return ERR_PTR(-ENOBUFS);
186
187 if (inode->i_state & I_NEW) {
188 struct gfs2_sbd *sdp = GFS2_SB(inode);
189 ip->i_no_formal_ino = no_formal_ino;
190
191 error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl);
192 if (unlikely(error))
193 goto fail;
194 ip->i_gl->gl_object = ip;
195
196 error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl);
197 if (unlikely(error))
198 goto fail_put;
199
200 set_bit(GIF_INVALID, &ip->i_flags);
201 error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
202 if (unlikely(error))
203 goto fail_iopen;
204 ip->i_iopen_gh.gh_gl->gl_object = ip;
205
206 gfs2_glock_put(io_gl);
207
208 if ((type == DT_UNKNOWN) && (no_formal_ino == 0))
209 goto gfs2_nfsbypass;
210
211 inode->i_mode = DT2IF(type);
212
213
214
215
216
217
218
219
220 if (type == DT_UNKNOWN) {
221 struct gfs2_holder gh;
222 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
223 if (unlikely(error))
224 goto fail_glock;
225
226 gfs2_glock_dq_uninit(&gh);
227 }
228
229 gfs2_set_iop(inode);
230 }
231
232gfs2_nfsbypass:
233 return inode;
234fail_glock:
235 gfs2_glock_dq(&ip->i_iopen_gh);
236fail_iopen:
237 gfs2_glock_put(io_gl);
238fail_put:
239 ip->i_gl->gl_object = NULL;
240 gfs2_glock_put(ip->i_gl);
241fail:
242 iget_failed(inode);
243 return ERR_PTR(error);
244}
245
246static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
247{
248 const struct gfs2_dinode *str = buf;
249 struct timespec atime;
250 u16 height, depth;
251
252 if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
253 goto corrupt;
254 ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
255 ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
256 ip->i_inode.i_rdev = 0;
257 switch (ip->i_inode.i_mode & S_IFMT) {
258 case S_IFBLK:
259 case S_IFCHR:
260 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
261 be32_to_cpu(str->di_minor));
262 break;
263 };
264
265 ip->i_inode.i_uid = be32_to_cpu(str->di_uid);
266 ip->i_inode.i_gid = be32_to_cpu(str->di_gid);
267
268
269
270
271
272 ip->i_inode.i_nlink = be32_to_cpu(str->di_nlink);
273 ip->i_disksize = be64_to_cpu(str->di_size);
274 i_size_write(&ip->i_inode, ip->i_disksize);
275 gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
276 atime.tv_sec = be64_to_cpu(str->di_atime);
277 atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
278 if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
279 ip->i_inode.i_atime = atime;
280 ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
281 ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
282 ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
283 ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
284
285 ip->i_goal = be64_to_cpu(str->di_goal_meta);
286 ip->i_generation = be64_to_cpu(str->di_generation);
287
288 ip->i_diskflags = be32_to_cpu(str->di_flags);
289 gfs2_set_inode_flags(&ip->i_inode);
290 height = be16_to_cpu(str->di_height);
291 if (unlikely(height > GFS2_MAX_META_HEIGHT))
292 goto corrupt;
293 ip->i_height = (u8)height;
294
295 depth = be16_to_cpu(str->di_depth);
296 if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
297 goto corrupt;
298 ip->i_depth = (u8)depth;
299 ip->i_entries = be32_to_cpu(str->di_entries);
300
301 ip->i_eattr = be64_to_cpu(str->di_eattr);
302 if (S_ISREG(ip->i_inode.i_mode))
303 gfs2_set_aops(&ip->i_inode);
304
305 return 0;
306corrupt:
307 if (gfs2_consist_inode(ip))
308 gfs2_dinode_print(ip);
309 return -EIO;
310}
311
312
313
314
315
316
317
318
319int gfs2_inode_refresh(struct gfs2_inode *ip)
320{
321 struct buffer_head *dibh;
322 int error;
323
324 error = gfs2_meta_inode_buffer(ip, &dibh);
325 if (error)
326 return error;
327
328 if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) {
329 brelse(dibh);
330 return -EIO;
331 }
332
333 error = gfs2_dinode_in(ip, dibh->b_data);
334 brelse(dibh);
335 clear_bit(GIF_INVALID, &ip->i_flags);
336
337 return error;
338}
339
340int gfs2_dinode_dealloc(struct gfs2_inode *ip)
341{
342 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
343 struct gfs2_alloc *al;
344 struct gfs2_rgrpd *rgd;
345 int error;
346
347 if (gfs2_get_inode_blocks(&ip->i_inode) != 1) {
348 if (gfs2_consist_inode(ip))
349 gfs2_dinode_print(ip);
350 return -EIO;
351 }
352
353 al = gfs2_alloc_get(ip);
354 if (!al)
355 return -ENOMEM;
356
357 error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
358 if (error)
359 goto out;
360
361 error = gfs2_rindex_hold(sdp, &al->al_ri_gh);
362 if (error)
363 goto out_qs;
364
365 rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr);
366 if (!rgd) {
367 gfs2_consist_inode(ip);
368 error = -EIO;
369 goto out_rindex_relse;
370 }
371
372 error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0,
373 &al->al_rgd_gh);
374 if (error)
375 goto out_rindex_relse;
376
377 error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, 1);
378 if (error)
379 goto out_rg_gunlock;
380
381 set_bit(GLF_DIRTY, &ip->i_gl->gl_flags);
382 set_bit(GLF_LFLUSH, &ip->i_gl->gl_flags);
383
384 gfs2_free_di(rgd, ip);
385
386 gfs2_trans_end(sdp);
387
388out_rg_gunlock:
389 gfs2_glock_dq_uninit(&al->al_rgd_gh);
390out_rindex_relse:
391 gfs2_glock_dq_uninit(&al->al_ri_gh);
392out_qs:
393 gfs2_quota_unhold(ip);
394out:
395 gfs2_alloc_put(ip);
396 return error;
397}
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405
406int gfs2_change_nlink(struct gfs2_inode *ip, int diff)
407{
408 struct buffer_head *dibh;
409 u32 nlink;
410 int error;
411
412 BUG_ON(diff != 1 && diff != -1);
413 nlink = ip->i_inode.i_nlink + diff;
414
415
416
417 if (diff < 0 && nlink > ip->i_inode.i_nlink) {
418 if (gfs2_consist_inode(ip))
419 gfs2_dinode_print(ip);
420 return -EIO;
421 }
422
423 error = gfs2_meta_inode_buffer(ip, &dibh);
424 if (error)
425 return error;
426
427 if (diff > 0)
428 inc_nlink(&ip->i_inode);
429 else
430 drop_nlink(&ip->i_inode);
431
432 ip->i_inode.i_ctime = CURRENT_TIME;
433
434 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
435 gfs2_dinode_out(ip, dibh->b_data);
436 brelse(dibh);
437 mark_inode_dirty(&ip->i_inode);
438
439 if (ip->i_inode.i_nlink == 0)
440 gfs2_unlink_di(&ip->i_inode);
441
442 return error;
443}
444
445struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
446{
447 struct qstr qstr;
448 struct inode *inode;
449 gfs2_str2qstr(&qstr, name);
450 inode = gfs2_lookupi(dip, &qstr, 1);
451
452
453
454
455
456 if (inode == NULL)
457 return ERR_PTR(-ENOENT);
458 else
459 return inode;
460}
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477
478struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
479 int is_root)
480{
481 struct super_block *sb = dir->i_sb;
482 struct gfs2_inode *dip = GFS2_I(dir);
483 struct gfs2_holder d_gh;
484 int error = 0;
485 struct inode *inode = NULL;
486 int unlock = 0;
487
488 if (!name->len || name->len > GFS2_FNAMESIZE)
489 return ERR_PTR(-ENAMETOOLONG);
490
491 if ((name->len == 1 && memcmp(name->name, ".", 1) == 0) ||
492 (name->len == 2 && memcmp(name->name, "..", 2) == 0 &&
493 dir == sb->s_root->d_inode)) {
494 igrab(dir);
495 return dir;
496 }
497
498 if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) {
499 error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
500 if (error)
501 return ERR_PTR(error);
502 unlock = 1;
503 }
504
505 if (!is_root) {
506 error = gfs2_permission(dir, MAY_EXEC);
507 if (error)
508 goto out;
509 }
510
511 inode = gfs2_dir_search(dir, name);
512 if (IS_ERR(inode))
513 error = PTR_ERR(inode);
514out:
515 if (unlock)
516 gfs2_glock_dq_uninit(&d_gh);
517 if (error == -ENOENT)
518 return NULL;
519 return inode ? inode : ERR_PTR(error);
520}
521
522
523
524
525
526
527
528
529
530
531static int create_ok(struct gfs2_inode *dip, const struct qstr *name,
532 unsigned int mode)
533{
534 int error;
535
536 error = gfs2_permission(&dip->i_inode, MAY_WRITE | MAY_EXEC);
537 if (error)
538 return error;
539
540
541 if (!dip->i_inode.i_nlink)
542 return -EPERM;
543
544 error = gfs2_dir_check(&dip->i_inode, name, NULL);
545 switch (error) {
546 case -ENOENT:
547 error = 0;
548 break;
549 case 0:
550 return -EEXIST;
551 default:
552 return error;
553 }
554
555 if (dip->i_entries == (u32)-1)
556 return -EFBIG;
557 if (S_ISDIR(mode) && dip->i_inode.i_nlink == (u32)-1)
558 return -EMLINK;
559
560 return 0;
561}
562
563static void munge_mode_uid_gid(struct gfs2_inode *dip, unsigned int *mode,
564 unsigned int *uid, unsigned int *gid)
565{
566 if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir &&
567 (dip->i_inode.i_mode & S_ISUID) && dip->i_inode.i_uid) {
568 if (S_ISDIR(*mode))
569 *mode |= S_ISUID;
570 else if (dip->i_inode.i_uid != current_fsuid())
571 *mode &= ~07111;
572 *uid = dip->i_inode.i_uid;
573 } else
574 *uid = current_fsuid();
575
576 if (dip->i_inode.i_mode & S_ISGID) {
577 if (S_ISDIR(*mode))
578 *mode |= S_ISGID;
579 *gid = dip->i_inode.i_gid;
580 } else
581 *gid = current_fsgid();
582}
583
584static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
585{
586 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
587 int error;
588
589 if (gfs2_alloc_get(dip) == NULL)
590 return -ENOMEM;
591
592 dip->i_alloc->al_requested = RES_DINODE;
593 error = gfs2_inplace_reserve(dip);
594 if (error)
595 goto out;
596
597 error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS, 0);
598 if (error)
599 goto out_ipreserv;
600
601 error = gfs2_alloc_di(dip, no_addr, generation);
602
603 gfs2_trans_end(sdp);
604
605out_ipreserv:
606 gfs2_inplace_release(dip);
607out:
608 gfs2_alloc_put(dip);
609 return error;
610}
611
612
613
614
615
616
617
618
619
620
621
622
623static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
624 const struct gfs2_inum_host *inum, unsigned int mode,
625 unsigned int uid, unsigned int gid,
626 const u64 *generation, dev_t dev, struct buffer_head **bhp)
627{
628 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
629 struct gfs2_dinode *di;
630 struct buffer_head *dibh;
631 struct timespec tv = CURRENT_TIME;
632
633 dibh = gfs2_meta_new(gl, inum->no_addr);
634 gfs2_trans_add_bh(gl, dibh, 1);
635 gfs2_metatype_set(dibh, GFS2_METATYPE_DI, GFS2_FORMAT_DI);
636 gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
637 di = (struct gfs2_dinode *)dibh->b_data;
638
639 di->di_num.no_formal_ino = cpu_to_be64(inum->no_formal_ino);
640 di->di_num.no_addr = cpu_to_be64(inum->no_addr);
641 di->di_mode = cpu_to_be32(mode);
642 di->di_uid = cpu_to_be32(uid);
643 di->di_gid = cpu_to_be32(gid);
644 di->di_nlink = 0;
645 di->di_size = 0;
646 di->di_blocks = cpu_to_be64(1);
647 di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(tv.tv_sec);
648 di->di_major = cpu_to_be32(MAJOR(dev));
649 di->di_minor = cpu_to_be32(MINOR(dev));
650 di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr);
651 di->di_generation = cpu_to_be64(*generation);
652 di->di_flags = 0;
653
654 if (S_ISREG(mode)) {
655 if ((dip->i_diskflags & GFS2_DIF_INHERIT_JDATA) ||
656 gfs2_tune_get(sdp, gt_new_files_jdata))
657 di->di_flags |= cpu_to_be32(GFS2_DIF_JDATA);
658 } else if (S_ISDIR(mode)) {
659 di->di_flags |= cpu_to_be32(dip->i_diskflags &
660 GFS2_DIF_INHERIT_JDATA);
661 }
662
663 di->__pad1 = 0;
664 di->di_payload_format = cpu_to_be32(S_ISDIR(mode) ? GFS2_FORMAT_DE : 0);
665 di->di_height = 0;
666 di->__pad2 = 0;
667 di->__pad3 = 0;
668 di->di_depth = 0;
669 di->di_entries = 0;
670 memset(&di->__pad4, 0, sizeof(di->__pad4));
671 di->di_eattr = 0;
672 di->di_atime_nsec = cpu_to_be32(tv.tv_nsec);
673 di->di_mtime_nsec = cpu_to_be32(tv.tv_nsec);
674 di->di_ctime_nsec = cpu_to_be32(tv.tv_nsec);
675 memset(&di->di_reserved, 0, sizeof(di->di_reserved));
676
677 set_buffer_uptodate(dibh);
678
679 *bhp = dibh;
680}
681
682static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
683 unsigned int mode, const struct gfs2_inum_host *inum,
684 const u64 *generation, dev_t dev, struct buffer_head **bhp)
685{
686 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
687 unsigned int uid, gid;
688 int error;
689
690 munge_mode_uid_gid(dip, &mode, &uid, &gid);
691 if (!gfs2_alloc_get(dip))
692 return -ENOMEM;
693
694 error = gfs2_quota_lock(dip, uid, gid);
695 if (error)
696 goto out;
697
698 error = gfs2_quota_check(dip, uid, gid);
699 if (error)
700 goto out_quota;
701
702 error = gfs2_trans_begin(sdp, RES_DINODE + RES_QUOTA, 0);
703 if (error)
704 goto out_quota;
705
706 init_dinode(dip, gl, inum, mode, uid, gid, generation, dev, bhp);
707 gfs2_quota_change(dip, +1, uid, gid);
708 gfs2_trans_end(sdp);
709
710out_quota:
711 gfs2_quota_unlock(dip);
712out:
713 gfs2_alloc_put(dip);
714 return error;
715}
716
717static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
718 struct gfs2_inode *ip)
719{
720 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
721 struct gfs2_alloc *al;
722 int alloc_required;
723 struct buffer_head *dibh;
724 int error;
725
726 al = gfs2_alloc_get(dip);
727 if (!al)
728 return -ENOMEM;
729
730 error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
731 if (error)
732 goto fail;
733
734 error = alloc_required = gfs2_diradd_alloc_required(&dip->i_inode, name);
735 if (alloc_required < 0)
736 goto fail_quota_locks;
737 if (alloc_required) {
738 error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid);
739 if (error)
740 goto fail_quota_locks;
741
742 al->al_requested = sdp->sd_max_dirres;
743
744 error = gfs2_inplace_reserve(dip);
745 if (error)
746 goto fail_quota_locks;
747
748 error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
749 al->al_rgd->rd_length +
750 2 * RES_DINODE +
751 RES_STATFS + RES_QUOTA, 0);
752 if (error)
753 goto fail_ipreserv;
754 } else {
755 error = gfs2_trans_begin(sdp, RES_LEAF + 2 * RES_DINODE, 0);
756 if (error)
757 goto fail_quota_locks;
758 }
759
760 error = gfs2_dir_add(&dip->i_inode, name, ip, IF2DT(ip->i_inode.i_mode));
761 if (error)
762 goto fail_end_trans;
763
764 error = gfs2_meta_inode_buffer(ip, &dibh);
765 if (error)
766 goto fail_end_trans;
767 ip->i_inode.i_nlink = 1;
768 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
769 gfs2_dinode_out(ip, dibh->b_data);
770 brelse(dibh);
771 return 0;
772
773fail_end_trans:
774 gfs2_trans_end(sdp);
775
776fail_ipreserv:
777 if (dip->i_alloc->al_rgd)
778 gfs2_inplace_release(dip);
779
780fail_quota_locks:
781 gfs2_quota_unlock(dip);
782
783fail:
784 gfs2_alloc_put(dip);
785 return error;
786}
787
788static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip)
789{
790 int err;
791 size_t len;
792 void *value;
793 char *name;
794
795 err = security_inode_init_security(&ip->i_inode, &dip->i_inode,
796 &name, &value, &len);
797
798 if (err) {
799 if (err == -EOPNOTSUPP)
800 return 0;
801 return err;
802 }
803
804 err = gfs2_xattr_set(&ip->i_inode, GFS2_EATYPE_SECURITY, name, value, len, 0);
805 kfree(value);
806 kfree(name);
807
808 return err;
809}
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
828 unsigned int mode, dev_t dev)
829{
830 struct inode *inode = NULL;
831 struct gfs2_inode *dip = ghs->gh_gl->gl_object;
832 struct inode *dir = &dip->i_inode;
833 struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
834 struct gfs2_inum_host inum = { .no_addr = 0, .no_formal_ino = 0 };
835 int error;
836 u64 generation;
837 struct buffer_head *bh = NULL;
838
839 if (!name->len || name->len > GFS2_FNAMESIZE)
840 return ERR_PTR(-ENAMETOOLONG);
841
842 gfs2_holder_reinit(LM_ST_EXCLUSIVE, 0, ghs);
843 error = gfs2_glock_nq(ghs);
844 if (error)
845 goto fail;
846
847 error = create_ok(dip, name, mode);
848 if (error)
849 goto fail_gunlock;
850
851 error = alloc_dinode(dip, &inum.no_addr, &generation);
852 if (error)
853 goto fail_gunlock;
854 inum.no_formal_ino = generation;
855
856 error = gfs2_glock_nq_num(sdp, inum.no_addr, &gfs2_inode_glops,
857 LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1);
858 if (error)
859 goto fail_gunlock;
860
861 error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev, &bh);
862 if (error)
863 goto fail_gunlock2;
864
865 inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode), inum.no_addr,
866 inum.no_formal_ino, 0);
867 if (IS_ERR(inode))
868 goto fail_gunlock2;
869
870 error = gfs2_inode_refresh(GFS2_I(inode));
871 if (error)
872 goto fail_gunlock2;
873
874 error = gfs2_acl_create(dip, GFS2_I(inode));
875 if (error)
876 goto fail_gunlock2;
877
878 error = gfs2_security_init(dip, GFS2_I(inode));
879 if (error)
880 goto fail_gunlock2;
881
882 error = link_dinode(dip, name, GFS2_I(inode));
883 if (error)
884 goto fail_gunlock2;
885
886 if (bh)
887 brelse(bh);
888 return inode;
889
890fail_gunlock2:
891 gfs2_glock_dq_uninit(ghs + 1);
892 if (inode && !IS_ERR(inode))
893 iput(inode);
894fail_gunlock:
895 gfs2_glock_dq(ghs);
896fail:
897 if (bh)
898 brelse(bh);
899 return ERR_PTR(error);
900}
901
902static int __gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
903{
904 struct buffer_head *dibh;
905 int error;
906
907 error = gfs2_meta_inode_buffer(ip, &dibh);
908 if (!error) {
909 error = inode_setattr(&ip->i_inode, attr);
910 gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error);
911 gfs2_trans_add_bh(ip->i_gl, dibh, 1);
912 gfs2_dinode_out(ip, dibh->b_data);
913 brelse(dibh);
914 }
915 return error;
916}
917
918
919
920
921
922
923
924
925
926
927
928int gfs2_setattr_simple(struct gfs2_inode *ip, struct iattr *attr)
929{
930 int error;
931
932 if (current->journal_info)
933 return __gfs2_setattr_simple(ip, attr);
934
935 error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE, 0);
936 if (error)
937 return error;
938
939 error = __gfs2_setattr_simple(ip, attr);
940 gfs2_trans_end(GFS2_SB(&ip->i_inode));
941 return error;
942}
943
944void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
945{
946 struct gfs2_dinode *str = buf;
947
948 str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
949 str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI);
950 str->di_header.__pad0 = 0;
951 str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI);
952 str->di_header.__pad1 = 0;
953 str->di_num.no_addr = cpu_to_be64(ip->i_no_addr);
954 str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
955 str->di_mode = cpu_to_be32(ip->i_inode.i_mode);
956 str->di_uid = cpu_to_be32(ip->i_inode.i_uid);
957 str->di_gid = cpu_to_be32(ip->i_inode.i_gid);
958 str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink);
959 str->di_size = cpu_to_be64(ip->i_disksize);
960 str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode));
961 str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec);
962 str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec);
963 str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec);
964
965 str->di_goal_meta = cpu_to_be64(ip->i_goal);
966 str->di_goal_data = cpu_to_be64(ip->i_goal);
967 str->di_generation = cpu_to_be64(ip->i_generation);
968
969 str->di_flags = cpu_to_be32(ip->i_diskflags);
970 str->di_height = cpu_to_be16(ip->i_height);
971 str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) &&
972 !(ip->i_diskflags & GFS2_DIF_EXHASH) ?
973 GFS2_FORMAT_DE : 0);
974 str->di_depth = cpu_to_be16(ip->i_depth);
975 str->di_entries = cpu_to_be32(ip->i_entries);
976
977 str->di_eattr = cpu_to_be64(ip->i_eattr);
978 str->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec);
979 str->di_mtime_nsec = cpu_to_be32(ip->i_inode.i_mtime.tv_nsec);
980 str->di_ctime_nsec = cpu_to_be32(ip->i_inode.i_ctime.tv_nsec);
981}
982
983void gfs2_dinode_print(const struct gfs2_inode *ip)
984{
985 printk(KERN_INFO " no_formal_ino = %llu\n",
986 (unsigned long long)ip->i_no_formal_ino);
987 printk(KERN_INFO " no_addr = %llu\n",
988 (unsigned long long)ip->i_no_addr);
989 printk(KERN_INFO " i_disksize = %llu\n",
990 (unsigned long long)ip->i_disksize);
991 printk(KERN_INFO " blocks = %llu\n",
992 (unsigned long long)gfs2_get_inode_blocks(&ip->i_inode));
993 printk(KERN_INFO " i_goal = %llu\n",
994 (unsigned long long)ip->i_goal);
995 printk(KERN_INFO " i_diskflags = 0x%.8X\n", ip->i_diskflags);
996 printk(KERN_INFO " i_height = %u\n", ip->i_height);
997 printk(KERN_INFO " i_depth = %u\n", ip->i_depth);
998 printk(KERN_INFO " i_entries = %u\n", ip->i_entries);
999 printk(KERN_INFO " i_eattr = %llu\n",
1000 (unsigned long long)ip->i_eattr);
1001}
1002
1003