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-rw-r--r--fs/exofs/Kbuild2
-rw-r--r--fs/exofs/dir.c657
-rw-r--r--fs/exofs/exofs.h26
-rw-r--r--fs/exofs/inode.c272
-rw-r--r--fs/exofs/namei.c342
5 files changed, 1298 insertions, 1 deletions
diff --git a/fs/exofs/Kbuild b/fs/exofs/Kbuild
index 7c361c92bbdf..0a23f24db8b2 100644
--- a/fs/exofs/Kbuild
+++ b/fs/exofs/Kbuild
@@ -12,5 +12,5 @@
12# Kbuild - Gets included from the Kernels Makefile and build system 12# Kbuild - Gets included from the Kernels Makefile and build system
13# 13#
14 14
15exofs-y := osd.o inode.o file.o symlink.o 15exofs-y := osd.o inode.o file.o symlink.o namei.o dir.o
16obj-$(CONFIG_EXOFS_FS) += exofs.o 16obj-$(CONFIG_EXOFS_FS) += exofs.o
diff --git a/fs/exofs/dir.c b/fs/exofs/dir.c
new file mode 100644
index 000000000000..6865605fb6ab
--- /dev/null
+++ b/fs/exofs/dir.c
@@ -0,0 +1,657 @@
1/*
2 * Copyright (C) 2005, 2006
3 * Avishay Traeger (avishay@gmail.com) (avishay@il.ibm.com)
4 * Copyright (C) 2005, 2006
5 * International Business Machines
6 * Copyright (C) 2008, 2009
7 * Boaz Harrosh <bharrosh@panasas.com>
8 *
9 * Copyrights for code taken from ext2:
10 * Copyright (C) 1992, 1993, 1994, 1995
11 * Remy Card (card@masi.ibp.fr)
12 * Laboratoire MASI - Institut Blaise Pascal
13 * Universite Pierre et Marie Curie (Paris VI)
14 * from
15 * linux/fs/minix/inode.c
16 * Copyright (C) 1991, 1992 Linus Torvalds
17 *
18 * This file is part of exofs.
19 *
20 * exofs is free software; you can redistribute it and/or modify
21 * it under the terms of the GNU General Public License as published by
22 * the Free Software Foundation. Since it is based on ext2, and the only
23 * valid version of GPL for the Linux kernel is version 2, the only valid
24 * version of GPL for exofs is version 2.
25 *
26 * exofs is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * GNU General Public License for more details.
30 *
31 * You should have received a copy of the GNU General Public License
32 * along with exofs; if not, write to the Free Software
33 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
34 */
35
36#include "exofs.h"
37
38static inline unsigned exofs_chunk_size(struct inode *inode)
39{
40 return inode->i_sb->s_blocksize;
41}
42
43static inline void exofs_put_page(struct page *page)
44{
45 kunmap(page);
46 page_cache_release(page);
47}
48
49/* Accesses dir's inode->i_size must be called under inode lock */
50static inline unsigned long dir_pages(struct inode *inode)
51{
52 return (inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
53}
54
55static unsigned exofs_last_byte(struct inode *inode, unsigned long page_nr)
56{
57 loff_t last_byte = inode->i_size;
58
59 last_byte -= page_nr << PAGE_CACHE_SHIFT;
60 if (last_byte > PAGE_CACHE_SIZE)
61 last_byte = PAGE_CACHE_SIZE;
62 return last_byte;
63}
64
65static int exofs_commit_chunk(struct page *page, loff_t pos, unsigned len)
66{
67 struct address_space *mapping = page->mapping;
68 struct inode *dir = mapping->host;
69 int err = 0;
70
71 dir->i_version++;
72
73 if (!PageUptodate(page))
74 SetPageUptodate(page);
75
76 if (pos+len > dir->i_size) {
77 i_size_write(dir, pos+len);
78 mark_inode_dirty(dir);
79 }
80 set_page_dirty(page);
81
82 if (IS_DIRSYNC(dir))
83 err = write_one_page(page, 1);
84 else
85 unlock_page(page);
86
87 return err;
88}
89
90static void exofs_check_page(struct page *page)
91{
92 struct inode *dir = page->mapping->host;
93 unsigned chunk_size = exofs_chunk_size(dir);
94 char *kaddr = page_address(page);
95 unsigned offs, rec_len;
96 unsigned limit = PAGE_CACHE_SIZE;
97 struct exofs_dir_entry *p;
98 char *error;
99
100 /* if the page is the last one in the directory */
101 if ((dir->i_size >> PAGE_CACHE_SHIFT) == page->index) {
102 limit = dir->i_size & ~PAGE_CACHE_MASK;
103 if (limit & (chunk_size - 1))
104 goto Ebadsize;
105 if (!limit)
106 goto out;
107 }
108 for (offs = 0; offs <= limit - EXOFS_DIR_REC_LEN(1); offs += rec_len) {
109 p = (struct exofs_dir_entry *)(kaddr + offs);
110 rec_len = le16_to_cpu(p->rec_len);
111
112 if (rec_len < EXOFS_DIR_REC_LEN(1))
113 goto Eshort;
114 if (rec_len & 3)
115 goto Ealign;
116 if (rec_len < EXOFS_DIR_REC_LEN(p->name_len))
117 goto Enamelen;
118 if (((offs + rec_len - 1) ^ offs) & ~(chunk_size-1))
119 goto Espan;
120 }
121 if (offs != limit)
122 goto Eend;
123out:
124 SetPageChecked(page);
125 return;
126
127Ebadsize:
128 EXOFS_ERR("ERROR [exofs_check_page]: "
129 "size of directory #%lu is not a multiple of chunk size",
130 dir->i_ino
131 );
132 goto fail;
133Eshort:
134 error = "rec_len is smaller than minimal";
135 goto bad_entry;
136Ealign:
137 error = "unaligned directory entry";
138 goto bad_entry;
139Enamelen:
140 error = "rec_len is too small for name_len";
141 goto bad_entry;
142Espan:
143 error = "directory entry across blocks";
144 goto bad_entry;
145bad_entry:
146 EXOFS_ERR(
147 "ERROR [exofs_check_page]: bad entry in directory #%lu: %s - "
148 "offset=%lu, inode=%llu, rec_len=%d, name_len=%d",
149 dir->i_ino, error, (page->index<<PAGE_CACHE_SHIFT)+offs,
150 _LLU(le64_to_cpu(p->inode_no)),
151 rec_len, p->name_len);
152 goto fail;
153Eend:
154 p = (struct exofs_dir_entry *)(kaddr + offs);
155 EXOFS_ERR("ERROR [exofs_check_page]: "
156 "entry in directory #%lu spans the page boundary"
157 "offset=%lu, inode=%llu",
158 dir->i_ino, (page->index<<PAGE_CACHE_SHIFT)+offs,
159 _LLU(le64_to_cpu(p->inode_no)));
160fail:
161 SetPageChecked(page);
162 SetPageError(page);
163}
164
165static struct page *exofs_get_page(struct inode *dir, unsigned long n)
166{
167 struct address_space *mapping = dir->i_mapping;
168 struct page *page = read_mapping_page(mapping, n, NULL);
169
170 if (!IS_ERR(page)) {
171 kmap(page);
172 if (!PageChecked(page))
173 exofs_check_page(page);
174 if (PageError(page))
175 goto fail;
176 }
177 return page;
178
179fail:
180 exofs_put_page(page);
181 return ERR_PTR(-EIO);
182}
183
184static inline int exofs_match(int len, const unsigned char *name,
185 struct exofs_dir_entry *de)
186{
187 if (len != de->name_len)
188 return 0;
189 if (!de->inode_no)
190 return 0;
191 return !memcmp(name, de->name, len);
192}
193
194static inline
195struct exofs_dir_entry *exofs_next_entry(struct exofs_dir_entry *p)
196{
197 return (struct exofs_dir_entry *)((char *)p + le16_to_cpu(p->rec_len));
198}
199
200static inline unsigned
201exofs_validate_entry(char *base, unsigned offset, unsigned mask)
202{
203 struct exofs_dir_entry *de = (struct exofs_dir_entry *)(base + offset);
204 struct exofs_dir_entry *p =
205 (struct exofs_dir_entry *)(base + (offset&mask));
206 while ((char *)p < (char *)de) {
207 if (p->rec_len == 0)
208 break;
209 p = exofs_next_entry(p);
210 }
211 return (char *)p - base;
212}
213
214static unsigned char exofs_filetype_table[EXOFS_FT_MAX] = {
215 [EXOFS_FT_UNKNOWN] = DT_UNKNOWN,
216 [EXOFS_FT_REG_FILE] = DT_REG,
217 [EXOFS_FT_DIR] = DT_DIR,
218 [EXOFS_FT_CHRDEV] = DT_CHR,
219 [EXOFS_FT_BLKDEV] = DT_BLK,
220 [EXOFS_FT_FIFO] = DT_FIFO,
221 [EXOFS_FT_SOCK] = DT_SOCK,
222 [EXOFS_FT_SYMLINK] = DT_LNK,
223};
224
225#define S_SHIFT 12
226static unsigned char exofs_type_by_mode[S_IFMT >> S_SHIFT] = {
227 [S_IFREG >> S_SHIFT] = EXOFS_FT_REG_FILE,
228 [S_IFDIR >> S_SHIFT] = EXOFS_FT_DIR,
229 [S_IFCHR >> S_SHIFT] = EXOFS_FT_CHRDEV,
230 [S_IFBLK >> S_SHIFT] = EXOFS_FT_BLKDEV,
231 [S_IFIFO >> S_SHIFT] = EXOFS_FT_FIFO,
232 [S_IFSOCK >> S_SHIFT] = EXOFS_FT_SOCK,
233 [S_IFLNK >> S_SHIFT] = EXOFS_FT_SYMLINK,
234};
235
236static inline
237void exofs_set_de_type(struct exofs_dir_entry *de, struct inode *inode)
238{
239 mode_t mode = inode->i_mode;
240 de->file_type = exofs_type_by_mode[(mode & S_IFMT) >> S_SHIFT];
241}
242
243static int
244exofs_readdir(struct file *filp, void *dirent, filldir_t filldir)
245{
246 loff_t pos = filp->f_pos;
247 struct inode *inode = filp->f_path.dentry->d_inode;
248 unsigned int offset = pos & ~PAGE_CACHE_MASK;
249 unsigned long n = pos >> PAGE_CACHE_SHIFT;
250 unsigned long npages = dir_pages(inode);
251 unsigned chunk_mask = ~(exofs_chunk_size(inode)-1);
252 unsigned char *types = NULL;
253 int need_revalidate = (filp->f_version != inode->i_version);
254
255 if (pos > inode->i_size - EXOFS_DIR_REC_LEN(1))
256 return 0;
257
258 types = exofs_filetype_table;
259
260 for ( ; n < npages; n++, offset = 0) {
261 char *kaddr, *limit;
262 struct exofs_dir_entry *de;
263 struct page *page = exofs_get_page(inode, n);
264
265 if (IS_ERR(page)) {
266 EXOFS_ERR("ERROR: "
267 "bad page in #%lu",
268 inode->i_ino);
269 filp->f_pos += PAGE_CACHE_SIZE - offset;
270 return PTR_ERR(page);
271 }
272 kaddr = page_address(page);
273 if (unlikely(need_revalidate)) {
274 if (offset) {
275 offset = exofs_validate_entry(kaddr, offset,
276 chunk_mask);
277 filp->f_pos = (n<<PAGE_CACHE_SHIFT) + offset;
278 }
279 filp->f_version = inode->i_version;
280 need_revalidate = 0;
281 }
282 de = (struct exofs_dir_entry *)(kaddr + offset);
283 limit = kaddr + exofs_last_byte(inode, n) -
284 EXOFS_DIR_REC_LEN(1);
285 for (; (char *)de <= limit; de = exofs_next_entry(de)) {
286 if (de->rec_len == 0) {
287 EXOFS_ERR("ERROR: "
288 "zero-length directory entry");
289 exofs_put_page(page);
290 return -EIO;
291 }
292 if (de->inode_no) {
293 int over;
294 unsigned char d_type = DT_UNKNOWN;
295
296 if (types && de->file_type < EXOFS_FT_MAX)
297 d_type = types[de->file_type];
298
299 offset = (char *)de - kaddr;
300 over = filldir(dirent, de->name, de->name_len,
301 (n<<PAGE_CACHE_SHIFT) | offset,
302 le64_to_cpu(de->inode_no),
303 d_type);
304 if (over) {
305 exofs_put_page(page);
306 return 0;
307 }
308 }
309 filp->f_pos += le16_to_cpu(de->rec_len);
310 }
311 exofs_put_page(page);
312 }
313
314 return 0;
315}
316
317struct exofs_dir_entry *exofs_find_entry(struct inode *dir,
318 struct dentry *dentry, struct page **res_page)
319{
320 const unsigned char *name = dentry->d_name.name;
321 int namelen = dentry->d_name.len;
322 unsigned reclen = EXOFS_DIR_REC_LEN(namelen);
323 unsigned long start, n;
324 unsigned long npages = dir_pages(dir);
325 struct page *page = NULL;
326 struct exofs_i_info *oi = exofs_i(dir);
327 struct exofs_dir_entry *de;
328
329 if (npages == 0)
330 goto out;
331
332 *res_page = NULL;
333
334 start = oi->i_dir_start_lookup;
335 if (start >= npages)
336 start = 0;
337 n = start;
338 do {
339 char *kaddr;
340 page = exofs_get_page(dir, n);
341 if (!IS_ERR(page)) {
342 kaddr = page_address(page);
343 de = (struct exofs_dir_entry *) kaddr;
344 kaddr += exofs_last_byte(dir, n) - reclen;
345 while ((char *) de <= kaddr) {
346 if (de->rec_len == 0) {
347 EXOFS_ERR(
348 "ERROR: exofs_find_entry: "
349 "zero-length directory entry");
350 exofs_put_page(page);
351 goto out;
352 }
353 if (exofs_match(namelen, name, de))
354 goto found;
355 de = exofs_next_entry(de);
356 }
357 exofs_put_page(page);
358 }
359 if (++n >= npages)
360 n = 0;
361 } while (n != start);
362out:
363 return NULL;
364
365found:
366 *res_page = page;
367 oi->i_dir_start_lookup = n;
368 return de;
369}
370
371struct exofs_dir_entry *exofs_dotdot(struct inode *dir, struct page **p)
372{
373 struct page *page = exofs_get_page(dir, 0);
374 struct exofs_dir_entry *de = NULL;
375
376 if (!IS_ERR(page)) {
377 de = exofs_next_entry(
378 (struct exofs_dir_entry *)page_address(page));
379 *p = page;
380 }
381 return de;
382}
383
384ino_t exofs_inode_by_name(struct inode *dir, struct dentry *dentry)
385{
386 ino_t res = 0;
387 struct exofs_dir_entry *de;
388 struct page *page;
389
390 de = exofs_find_entry(dir, dentry, &page);
391 if (de) {
392 res = le64_to_cpu(de->inode_no);
393 exofs_put_page(page);
394 }
395 return res;
396}
397
398int exofs_set_link(struct inode *dir, struct exofs_dir_entry *de,
399 struct page *page, struct inode *inode)
400{
401 loff_t pos = page_offset(page) +
402 (char *) de - (char *) page_address(page);
403 unsigned len = le16_to_cpu(de->rec_len);
404 int err;
405
406 lock_page(page);
407 err = exofs_write_begin(NULL, page->mapping, pos, len,
408 AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
409 if (err)
410 EXOFS_ERR("exofs_set_link: exofs_write_begin FAILD => %d\n",
411 err);
412
413 de->inode_no = cpu_to_le64(inode->i_ino);
414 exofs_set_de_type(de, inode);
415 if (likely(!err))
416 err = exofs_commit_chunk(page, pos, len);
417 exofs_put_page(page);
418 dir->i_mtime = dir->i_ctime = CURRENT_TIME;
419 mark_inode_dirty(dir);
420 return err;
421}
422
423int exofs_add_link(struct dentry *dentry, struct inode *inode)
424{
425 struct inode *dir = dentry->d_parent->d_inode;
426 const unsigned char *name = dentry->d_name.name;
427 int namelen = dentry->d_name.len;
428 unsigned chunk_size = exofs_chunk_size(dir);
429 unsigned reclen = EXOFS_DIR_REC_LEN(namelen);
430 unsigned short rec_len, name_len;
431 struct page *page = NULL;
432 struct exofs_sb_info *sbi = inode->i_sb->s_fs_info;
433 struct exofs_dir_entry *de;
434 unsigned long npages = dir_pages(dir);
435 unsigned long n;
436 char *kaddr;
437 loff_t pos;
438 int err;
439
440 for (n = 0; n <= npages; n++) {
441 char *dir_end;
442
443 page = exofs_get_page(dir, n);
444 err = PTR_ERR(page);
445 if (IS_ERR(page))
446 goto out;
447 lock_page(page);
448 kaddr = page_address(page);
449 dir_end = kaddr + exofs_last_byte(dir, n);
450 de = (struct exofs_dir_entry *)kaddr;
451 kaddr += PAGE_CACHE_SIZE - reclen;
452 while ((char *)de <= kaddr) {
453 if ((char *)de == dir_end) {
454 name_len = 0;
455 rec_len = chunk_size;
456 de->rec_len = cpu_to_le16(chunk_size);
457 de->inode_no = 0;
458 goto got_it;
459 }
460 if (de->rec_len == 0) {
461 EXOFS_ERR("ERROR: exofs_add_link: "
462 "zero-length directory entry");
463 err = -EIO;
464 goto out_unlock;
465 }
466 err = -EEXIST;
467 if (exofs_match(namelen, name, de))
468 goto out_unlock;
469 name_len = EXOFS_DIR_REC_LEN(de->name_len);
470 rec_len = le16_to_cpu(de->rec_len);
471 if (!de->inode_no && rec_len >= reclen)
472 goto got_it;
473 if (rec_len >= name_len + reclen)
474 goto got_it;
475 de = (struct exofs_dir_entry *) ((char *) de + rec_len);
476 }
477 unlock_page(page);
478 exofs_put_page(page);
479 }
480
481 EXOFS_ERR("exofs_add_link: BAD dentry=%p or inode=%p", dentry, inode);
482 return -EINVAL;
483
484got_it:
485 pos = page_offset(page) +
486 (char *)de - (char *)page_address(page);
487 err = exofs_write_begin(NULL, page->mapping, pos, rec_len, 0,
488 &page, NULL);
489 if (err)
490 goto out_unlock;
491 if (de->inode_no) {
492 struct exofs_dir_entry *de1 =
493 (struct exofs_dir_entry *)((char *)de + name_len);
494 de1->rec_len = cpu_to_le16(rec_len - name_len);
495 de->rec_len = cpu_to_le16(name_len);
496 de = de1;
497 }
498 de->name_len = namelen;
499 memcpy(de->name, name, namelen);
500 de->inode_no = cpu_to_le64(inode->i_ino);
501 exofs_set_de_type(de, inode);
502 err = exofs_commit_chunk(page, pos, rec_len);
503 dir->i_mtime = dir->i_ctime = CURRENT_TIME;
504 mark_inode_dirty(dir);
505 sbi->s_numfiles++;
506
507out_put:
508 exofs_put_page(page);
509out:
510 return err;
511out_unlock:
512 unlock_page(page);
513 goto out_put;
514}
515
516int exofs_delete_entry(struct exofs_dir_entry *dir, struct page *page)
517{
518 struct address_space *mapping = page->mapping;
519 struct inode *inode = mapping->host;
520 struct exofs_sb_info *sbi = inode->i_sb->s_fs_info;
521 char *kaddr = page_address(page);
522 unsigned from = ((char *)dir - kaddr) & ~(exofs_chunk_size(inode)-1);
523 unsigned to = ((char *)dir - kaddr) + le16_to_cpu(dir->rec_len);
524 loff_t pos;
525 struct exofs_dir_entry *pde = NULL;
526 struct exofs_dir_entry *de = (struct exofs_dir_entry *) (kaddr + from);
527 int err;
528
529 while (de < dir) {
530 if (de->rec_len == 0) {
531 EXOFS_ERR("ERROR: exofs_delete_entry:"
532 "zero-length directory entry");
533 err = -EIO;
534 goto out;
535 }
536 pde = de;
537 de = exofs_next_entry(de);
538 }
539 if (pde)
540 from = (char *)pde - (char *)page_address(page);
541 pos = page_offset(page) + from;
542 lock_page(page);
543 err = exofs_write_begin(NULL, page->mapping, pos, to - from, 0,
544 &page, NULL);
545 if (err)
546 EXOFS_ERR("exofs_delete_entry: exofs_write_begin FAILD => %d\n",
547 err);
548 if (pde)
549 pde->rec_len = cpu_to_le16(to - from);
550 dir->inode_no = 0;
551 if (likely(!err))
552 err = exofs_commit_chunk(page, pos, to - from);
553 inode->i_ctime = inode->i_mtime = CURRENT_TIME;
554 mark_inode_dirty(inode);
555 sbi->s_numfiles--;
556out:
557 exofs_put_page(page);
558 return err;
559}
560
561/* kept aligned on 4 bytes */
562#define THIS_DIR ".\0\0"
563#define PARENT_DIR "..\0"
564
565int exofs_make_empty(struct inode *inode, struct inode *parent)
566{
567 struct address_space *mapping = inode->i_mapping;
568 struct page *page = grab_cache_page(mapping, 0);
569 unsigned chunk_size = exofs_chunk_size(inode);
570 struct exofs_dir_entry *de;
571 int err;
572 void *kaddr;
573
574 if (!page)
575 return -ENOMEM;
576
577 err = exofs_write_begin(NULL, page->mapping, 0, chunk_size, 0,
578 &page, NULL);
579 if (err) {
580 unlock_page(page);
581 goto fail;
582 }
583
584 kaddr = kmap_atomic(page, KM_USER0);
585 de = (struct exofs_dir_entry *)kaddr;
586 de->name_len = 1;
587 de->rec_len = cpu_to_le16(EXOFS_DIR_REC_LEN(1));
588 memcpy(de->name, THIS_DIR, sizeof(THIS_DIR));
589 de->inode_no = cpu_to_le64(inode->i_ino);
590 exofs_set_de_type(de, inode);
591
592 de = (struct exofs_dir_entry *)(kaddr + EXOFS_DIR_REC_LEN(1));
593 de->name_len = 2;
594 de->rec_len = cpu_to_le16(chunk_size - EXOFS_DIR_REC_LEN(1));
595 de->inode_no = cpu_to_le64(parent->i_ino);
596 memcpy(de->name, PARENT_DIR, sizeof(PARENT_DIR));
597 exofs_set_de_type(de, inode);
598 kunmap_atomic(page, KM_USER0);
599 err = exofs_commit_chunk(page, 0, chunk_size);
600fail:
601 page_cache_release(page);
602 return err;
603}
604
605int exofs_empty_dir(struct inode *inode)
606{
607 struct page *page = NULL;
608 unsigned long i, npages = dir_pages(inode);
609
610 for (i = 0; i < npages; i++) {
611 char *kaddr;
612 struct exofs_dir_entry *de;
613 page = exofs_get_page(inode, i);
614
615 if (IS_ERR(page))
616 continue;
617
618 kaddr = page_address(page);
619 de = (struct exofs_dir_entry *)kaddr;
620 kaddr += exofs_last_byte(inode, i) - EXOFS_DIR_REC_LEN(1);
621
622 while ((char *)de <= kaddr) {
623 if (de->rec_len == 0) {
624 EXOFS_ERR("ERROR: exofs_empty_dir: "
625 "zero-length directory entry"
626 "kaddr=%p, de=%p\n", kaddr, de);
627 goto not_empty;
628 }
629 if (de->inode_no != 0) {
630 /* check for . and .. */
631 if (de->name[0] != '.')
632 goto not_empty;
633 if (de->name_len > 2)
634 goto not_empty;
635 if (de->name_len < 2) {
636 if (le64_to_cpu(de->inode_no) !=
637 inode->i_ino)
638 goto not_empty;
639 } else if (de->name[1] != '.')
640 goto not_empty;
641 }
642 de = exofs_next_entry(de);
643 }
644 exofs_put_page(page);
645 }
646 return 1;
647
648not_empty:
649 exofs_put_page(page);
650 return 0;
651}
652
653const struct file_operations exofs_dir_operations = {
654 .llseek = generic_file_llseek,
655 .read = generic_read_dir,
656 .readdir = exofs_readdir,
657};
diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h
index 0276242326ab..d11982c67e2a 100644
--- a/fs/exofs/exofs.h
+++ b/fs/exofs/exofs.h
@@ -124,6 +124,11 @@ static inline struct exofs_i_info *exofs_i(struct inode *inode)
124 return container_of(inode, struct exofs_i_info, vfs_inode); 124 return container_of(inode, struct exofs_i_info, vfs_inode);
125} 125}
126 126
127/*
128 * Maximum count of links to a file
129 */
130#define EXOFS_LINK_MAX 32000
131
127/************************* 132/*************************
128 * function declarations * 133 * function declarations *
129 *************************/ 134 *************************/
@@ -133,10 +138,27 @@ int exofs_setattr(struct dentry *, struct iattr *);
133int exofs_write_begin(struct file *file, struct address_space *mapping, 138int exofs_write_begin(struct file *file, struct address_space *mapping,
134 loff_t pos, unsigned len, unsigned flags, 139 loff_t pos, unsigned len, unsigned flags,
135 struct page **pagep, void **fsdata); 140 struct page **pagep, void **fsdata);
141extern struct inode *exofs_iget(struct super_block *, unsigned long);
142struct inode *exofs_new_inode(struct inode *, int);
143
144/* dir.c: */
145int exofs_add_link(struct dentry *, struct inode *);
146ino_t exofs_inode_by_name(struct inode *, struct dentry *);
147int exofs_delete_entry(struct exofs_dir_entry *, struct page *);
148int exofs_make_empty(struct inode *, struct inode *);
149struct exofs_dir_entry *exofs_find_entry(struct inode *, struct dentry *,
150 struct page **);
151int exofs_empty_dir(struct inode *);
152struct exofs_dir_entry *exofs_dotdot(struct inode *, struct page **);
153int exofs_set_link(struct inode *, struct exofs_dir_entry *, struct page *,
154 struct inode *);
136 155
137/********************* 156/*********************
138 * operation vectors * 157 * operation vectors *
139 *********************/ 158 *********************/
159/* dir.c: */
160extern const struct file_operations exofs_dir_operations;
161
140/* file.c */ 162/* file.c */
141extern const struct inode_operations exofs_file_inode_operations; 163extern const struct inode_operations exofs_file_inode_operations;
142extern const struct file_operations exofs_file_operations; 164extern const struct file_operations exofs_file_operations;
@@ -144,6 +166,10 @@ extern const struct file_operations exofs_file_operations;
144/* inode.c */ 166/* inode.c */
145extern const struct address_space_operations exofs_aops; 167extern const struct address_space_operations exofs_aops;
146 168
169/* namei.c */
170extern const struct inode_operations exofs_dir_inode_operations;
171extern const struct inode_operations exofs_special_inode_operations;
172
147/* symlink.c */ 173/* symlink.c */
148extern const struct inode_operations exofs_symlink_inode_operations; 174extern const struct inode_operations exofs_symlink_inode_operations;
149extern const struct inode_operations exofs_fast_symlink_inode_operations; 175extern const struct inode_operations exofs_fast_symlink_inode_operations;
diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c
index a3691d8bfb98..7c26ba371e1b 100644
--- a/fs/exofs/inode.c
+++ b/fs/exofs/inode.c
@@ -843,3 +843,275 @@ int exofs_setattr(struct dentry *dentry, struct iattr *iattr)
843 error = inode_setattr(inode, iattr); 843 error = inode_setattr(inode, iattr);
844 return error; 844 return error;
845} 845}
846
847/*
848 * Read an inode from the OSD, and return it as is. We also return the size
849 * attribute in the 'sanity' argument if we got compiled with debugging turned
850 * on.
851 */
852static int exofs_get_inode(struct super_block *sb, struct exofs_i_info *oi,
853 struct exofs_fcb *inode, uint64_t *sanity)
854{
855 struct exofs_sb_info *sbi = sb->s_fs_info;
856 struct osd_request *or;
857 struct osd_attr attr;
858 struct osd_obj_id obj = {sbi->s_pid,
859 oi->vfs_inode.i_ino + EXOFS_OBJ_OFF};
860 int ret;
861
862 exofs_make_credential(oi->i_cred, &obj);
863
864 or = osd_start_request(sbi->s_dev, GFP_KERNEL);
865 if (unlikely(!or)) {
866 EXOFS_ERR("exofs_get_inode: osd_start_request failed.\n");
867 return -ENOMEM;
868 }
869 osd_req_get_attributes(or, &obj);
870
871 /* we need the inode attribute */
872 osd_req_add_get_attr_list(or, &g_attr_inode_data, 1);
873
874#ifdef EXOFS_DEBUG_OBJ_ISIZE
875 /* we get the size attributes to do a sanity check */
876 osd_req_add_get_attr_list(or, &g_attr_logical_length, 1);
877#endif
878
879 ret = exofs_sync_op(or, sbi->s_timeout, oi->i_cred);
880 if (ret)
881 goto out;
882
883 attr = g_attr_inode_data;
884 ret = extract_attr_from_req(or, &attr);
885 if (ret) {
886 EXOFS_ERR("exofs_get_inode: extract_attr_from_req failed\n");
887 goto out;
888 }
889
890 WARN_ON(attr.len != EXOFS_INO_ATTR_SIZE);
891 memcpy(inode, attr.val_ptr, EXOFS_INO_ATTR_SIZE);
892
893#ifdef EXOFS_DEBUG_OBJ_ISIZE
894 attr = g_attr_logical_length;
895 ret = extract_attr_from_req(or, &attr);
896 if (ret) {
897 EXOFS_ERR("ERROR: extract attr from or failed\n");
898 goto out;
899 }
900 *sanity = get_unaligned_be64(attr.val_ptr);
901#endif
902
903out:
904 osd_end_request(or);
905 return ret;
906}
907
908/*
909 * Fill in an inode read from the OSD and set it up for use
910 */
911struct inode *exofs_iget(struct super_block *sb, unsigned long ino)
912{
913 struct exofs_i_info *oi;
914 struct exofs_fcb fcb;
915 struct inode *inode;
916 uint64_t uninitialized_var(sanity);
917 int ret;
918
919 inode = iget_locked(sb, ino);
920 if (!inode)
921 return ERR_PTR(-ENOMEM);
922 if (!(inode->i_state & I_NEW))
923 return inode;
924 oi = exofs_i(inode);
925
926 /* read the inode from the osd */
927 ret = exofs_get_inode(sb, oi, &fcb, &sanity);
928 if (ret)
929 goto bad_inode;
930
931 init_waitqueue_head(&oi->i_wq);
932 set_obj_created(oi);
933
934 /* copy stuff from on-disk struct to in-memory struct */
935 inode->i_mode = le16_to_cpu(fcb.i_mode);
936 inode->i_uid = le32_to_cpu(fcb.i_uid);
937 inode->i_gid = le32_to_cpu(fcb.i_gid);
938 inode->i_nlink = le16_to_cpu(fcb.i_links_count);
939 inode->i_ctime.tv_sec = (signed)le32_to_cpu(fcb.i_ctime);
940 inode->i_atime.tv_sec = (signed)le32_to_cpu(fcb.i_atime);
941 inode->i_mtime.tv_sec = (signed)le32_to_cpu(fcb.i_mtime);
942 inode->i_ctime.tv_nsec =
943 inode->i_atime.tv_nsec = inode->i_mtime.tv_nsec = 0;
944 oi->i_commit_size = le64_to_cpu(fcb.i_size);
945 i_size_write(inode, oi->i_commit_size);
946 inode->i_blkbits = EXOFS_BLKSHIFT;
947 inode->i_generation = le32_to_cpu(fcb.i_generation);
948
949#ifdef EXOFS_DEBUG_OBJ_ISIZE
950 if ((inode->i_size != sanity) &&
951 (!exofs_inode_is_fast_symlink(inode))) {
952 EXOFS_ERR("WARNING: Size of object from inode and "
953 "attributes differ (%lld != %llu)\n",
954 inode->i_size, _LLU(sanity));
955 }
956#endif
957
958 oi->i_dir_start_lookup = 0;
959
960 if ((inode->i_nlink == 0) && (inode->i_mode == 0)) {
961 ret = -ESTALE;
962 goto bad_inode;
963 }
964
965 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
966 if (fcb.i_data[0])
967 inode->i_rdev =
968 old_decode_dev(le32_to_cpu(fcb.i_data[0]));
969 else
970 inode->i_rdev =
971 new_decode_dev(le32_to_cpu(fcb.i_data[1]));
972 } else {
973 memcpy(oi->i_data, fcb.i_data, sizeof(fcb.i_data));
974 }
975
976 if (S_ISREG(inode->i_mode)) {
977 inode->i_op = &exofs_file_inode_operations;
978 inode->i_fop = &exofs_file_operations;
979 inode->i_mapping->a_ops = &exofs_aops;
980 } else if (S_ISDIR(inode->i_mode)) {
981 inode->i_op = &exofs_dir_inode_operations;
982 inode->i_fop = &exofs_dir_operations;
983 inode->i_mapping->a_ops = &exofs_aops;
984 } else if (S_ISLNK(inode->i_mode)) {
985 if (exofs_inode_is_fast_symlink(inode))
986 inode->i_op = &exofs_fast_symlink_inode_operations;
987 else {
988 inode->i_op = &exofs_symlink_inode_operations;
989 inode->i_mapping->a_ops = &exofs_aops;
990 }
991 } else {
992 inode->i_op = &exofs_special_inode_operations;
993 if (fcb.i_data[0])
994 init_special_inode(inode, inode->i_mode,
995 old_decode_dev(le32_to_cpu(fcb.i_data[0])));
996 else
997 init_special_inode(inode, inode->i_mode,
998 new_decode_dev(le32_to_cpu(fcb.i_data[1])));
999 }
1000
1001 unlock_new_inode(inode);
1002 return inode;
1003
1004bad_inode:
1005 iget_failed(inode);
1006 return ERR_PTR(ret);
1007}
1008
1009int __exofs_wait_obj_created(struct exofs_i_info *oi)
1010{
1011 if (!obj_created(oi)) {
1012 BUG_ON(!obj_2bcreated(oi));
1013 wait_event(oi->i_wq, obj_created(oi));
1014 }
1015 return unlikely(is_bad_inode(&oi->vfs_inode)) ? -EIO : 0;
1016}
1017/*
1018 * Callback function from exofs_new_inode(). The important thing is that we
1019 * set the obj_created flag so that other methods know that the object exists on
1020 * the OSD.
1021 */
1022static void create_done(struct osd_request *or, void *p)
1023{
1024 struct inode *inode = p;
1025 struct exofs_i_info *oi = exofs_i(inode);
1026 struct exofs_sb_info *sbi = inode->i_sb->s_fs_info;
1027 int ret;
1028
1029 ret = exofs_check_ok(or);
1030 osd_end_request(or);
1031 atomic_dec(&sbi->s_curr_pending);
1032
1033 if (unlikely(ret)) {
1034 EXOFS_ERR("object=0x%llx creation faild in pid=0x%llx",
1035 _LLU(sbi->s_pid), _LLU(inode->i_ino + EXOFS_OBJ_OFF));
1036 make_bad_inode(inode);
1037 } else
1038 set_obj_created(oi);
1039
1040 atomic_dec(&inode->i_count);
1041 wake_up(&oi->i_wq);
1042}
1043
1044/*
1045 * Set up a new inode and create an object for it on the OSD
1046 */
1047struct inode *exofs_new_inode(struct inode *dir, int mode)
1048{
1049 struct super_block *sb;
1050 struct inode *inode;
1051 struct exofs_i_info *oi;
1052 struct exofs_sb_info *sbi;
1053 struct osd_request *or;
1054 struct osd_obj_id obj;
1055 int ret;
1056
1057 sb = dir->i_sb;
1058 inode = new_inode(sb);
1059 if (!inode)
1060 return ERR_PTR(-ENOMEM);
1061
1062 oi = exofs_i(inode);
1063
1064 init_waitqueue_head(&oi->i_wq);
1065 set_obj_2bcreated(oi);
1066
1067 sbi = sb->s_fs_info;
1068
1069 sb->s_dirt = 1;
1070 inode->i_uid = current->cred->fsuid;
1071 if (dir->i_mode & S_ISGID) {
1072 inode->i_gid = dir->i_gid;
1073 if (S_ISDIR(mode))
1074 mode |= S_ISGID;
1075 } else {
1076 inode->i_gid = current->cred->fsgid;
1077 }
1078 inode->i_mode = mode;
1079
1080 inode->i_ino = sbi->s_nextid++;
1081 inode->i_blkbits = EXOFS_BLKSHIFT;
1082 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
1083 oi->i_commit_size = inode->i_size = 0;
1084 spin_lock(&sbi->s_next_gen_lock);
1085 inode->i_generation = sbi->s_next_generation++;
1086 spin_unlock(&sbi->s_next_gen_lock);
1087 insert_inode_hash(inode);
1088
1089 mark_inode_dirty(inode);
1090
1091 obj.partition = sbi->s_pid;
1092 obj.id = inode->i_ino + EXOFS_OBJ_OFF;
1093 exofs_make_credential(oi->i_cred, &obj);
1094
1095 or = osd_start_request(sbi->s_dev, GFP_KERNEL);
1096 if (unlikely(!or)) {
1097 EXOFS_ERR("exofs_new_inode: osd_start_request failed\n");
1098 return ERR_PTR(-ENOMEM);
1099 }
1100
1101 osd_req_create_object(or, &obj);
1102
1103 /* increment the refcount so that the inode will still be around when we
1104 * reach the callback
1105 */
1106 atomic_inc(&inode->i_count);
1107
1108 ret = exofs_async_op(or, create_done, inode, oi->i_cred);
1109 if (ret) {
1110 atomic_dec(&inode->i_count);
1111 osd_end_request(or);
1112 return ERR_PTR(-EIO);
1113 }
1114 atomic_inc(&sbi->s_curr_pending);
1115
1116 return inode;
1117}
diff --git a/fs/exofs/namei.c b/fs/exofs/namei.c
new file mode 100644
index 000000000000..77fdd765e76d
--- /dev/null
+++ b/fs/exofs/namei.c
@@ -0,0 +1,342 @@
1/*
2 * Copyright (C) 2005, 2006
3 * Avishay Traeger (avishay@gmail.com) (avishay@il.ibm.com)
4 * Copyright (C) 2005, 2006
5 * International Business Machines
6 * Copyright (C) 2008, 2009
7 * Boaz Harrosh <bharrosh@panasas.com>
8 *
9 * Copyrights for code taken from ext2:
10 * Copyright (C) 1992, 1993, 1994, 1995
11 * Remy Card (card@masi.ibp.fr)
12 * Laboratoire MASI - Institut Blaise Pascal
13 * Universite Pierre et Marie Curie (Paris VI)
14 * from
15 * linux/fs/minix/inode.c
16 * Copyright (C) 1991, 1992 Linus Torvalds
17 *
18 * This file is part of exofs.
19 *
20 * exofs is free software; you can redistribute it and/or modify
21 * it under the terms of the GNU General Public License as published by
22 * the Free Software Foundation. Since it is based on ext2, and the only
23 * valid version of GPL for the Linux kernel is version 2, the only valid
24 * version of GPL for exofs is version 2.
25 *
26 * exofs is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * GNU General Public License for more details.
30 *
31 * You should have received a copy of the GNU General Public License
32 * along with exofs; if not, write to the Free Software
33 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
34 */
35
36#include "exofs.h"
37
38static inline int exofs_add_nondir(struct dentry *dentry, struct inode *inode)
39{
40 int err = exofs_add_link(dentry, inode);
41 if (!err) {
42 d_instantiate(dentry, inode);
43 return 0;
44 }
45 inode_dec_link_count(inode);
46 iput(inode);
47 return err;
48}
49
50static struct dentry *exofs_lookup(struct inode *dir, struct dentry *dentry,
51 struct nameidata *nd)
52{
53 struct inode *inode;
54 ino_t ino;
55
56 if (dentry->d_name.len > EXOFS_NAME_LEN)
57 return ERR_PTR(-ENAMETOOLONG);
58
59 ino = exofs_inode_by_name(dir, dentry);
60 inode = NULL;
61 if (ino) {
62 inode = exofs_iget(dir->i_sb, ino);
63 if (IS_ERR(inode))
64 return ERR_CAST(inode);
65 }
66 return d_splice_alias(inode, dentry);
67}
68
69static int exofs_create(struct inode *dir, struct dentry *dentry, int mode,
70 struct nameidata *nd)
71{
72 struct inode *inode = exofs_new_inode(dir, mode);
73 int err = PTR_ERR(inode);
74 if (!IS_ERR(inode)) {
75 inode->i_op = &exofs_file_inode_operations;
76 inode->i_fop = &exofs_file_operations;
77 inode->i_mapping->a_ops = &exofs_aops;
78 mark_inode_dirty(inode);
79 err = exofs_add_nondir(dentry, inode);
80 }
81 return err;
82}
83
84static int exofs_mknod(struct inode *dir, struct dentry *dentry, int mode,
85 dev_t rdev)
86{
87 struct inode *inode;
88 int err;
89
90 if (!new_valid_dev(rdev))
91 return -EINVAL;
92
93 inode = exofs_new_inode(dir, mode);
94 err = PTR_ERR(inode);
95 if (!IS_ERR(inode)) {
96 init_special_inode(inode, inode->i_mode, rdev);
97 mark_inode_dirty(inode);
98 err = exofs_add_nondir(dentry, inode);
99 }
100 return err;
101}
102
103static int exofs_symlink(struct inode *dir, struct dentry *dentry,
104 const char *symname)
105{
106 struct super_block *sb = dir->i_sb;
107 int err = -ENAMETOOLONG;
108 unsigned l = strlen(symname)+1;
109 struct inode *inode;
110 struct exofs_i_info *oi;
111
112 if (l > sb->s_blocksize)
113 goto out;
114
115 inode = exofs_new_inode(dir, S_IFLNK | S_IRWXUGO);
116 err = PTR_ERR(inode);
117 if (IS_ERR(inode))
118 goto out;
119
120 oi = exofs_i(inode);
121 if (l > sizeof(oi->i_data)) {
122 /* slow symlink */
123 inode->i_op = &exofs_symlink_inode_operations;
124 inode->i_mapping->a_ops = &exofs_aops;
125 memset(oi->i_data, 0, sizeof(oi->i_data));
126
127 err = page_symlink(inode, symname, l);
128 if (err)
129 goto out_fail;
130 } else {
131 /* fast symlink */
132 inode->i_op = &exofs_fast_symlink_inode_operations;
133 memcpy(oi->i_data, symname, l);
134 inode->i_size = l-1;
135 }
136 mark_inode_dirty(inode);
137
138 err = exofs_add_nondir(dentry, inode);
139out:
140 return err;
141
142out_fail:
143 inode_dec_link_count(inode);
144 iput(inode);
145 goto out;
146}
147
148static int exofs_link(struct dentry *old_dentry, struct inode *dir,
149 struct dentry *dentry)
150{
151 struct inode *inode = old_dentry->d_inode;
152
153 if (inode->i_nlink >= EXOFS_LINK_MAX)
154 return -EMLINK;
155
156 inode->i_ctime = CURRENT_TIME;
157 inode_inc_link_count(inode);
158 atomic_inc(&inode->i_count);
159
160 return exofs_add_nondir(dentry, inode);
161}
162
163static int exofs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
164{
165 struct inode *inode;
166 int err = -EMLINK;
167
168 if (dir->i_nlink >= EXOFS_LINK_MAX)
169 goto out;
170
171 inode_inc_link_count(dir);
172
173 inode = exofs_new_inode(dir, S_IFDIR | mode);
174 err = PTR_ERR(inode);
175 if (IS_ERR(inode))
176 goto out_dir;
177
178 inode->i_op = &exofs_dir_inode_operations;
179 inode->i_fop = &exofs_dir_operations;
180 inode->i_mapping->a_ops = &exofs_aops;
181
182 inode_inc_link_count(inode);
183
184 err = exofs_make_empty(inode, dir);
185 if (err)
186 goto out_fail;
187
188 err = exofs_add_link(dentry, inode);
189 if (err)
190 goto out_fail;
191
192 d_instantiate(dentry, inode);
193out:
194 return err;
195
196out_fail:
197 inode_dec_link_count(inode);
198 inode_dec_link_count(inode);
199 iput(inode);
200out_dir:
201 inode_dec_link_count(dir);
202 goto out;
203}
204
205static int exofs_unlink(struct inode *dir, struct dentry *dentry)
206{
207 struct inode *inode = dentry->d_inode;
208 struct exofs_dir_entry *de;
209 struct page *page;
210 int err = -ENOENT;
211
212 de = exofs_find_entry(dir, dentry, &page);
213 if (!de)
214 goto out;
215
216 err = exofs_delete_entry(de, page);
217 if (err)
218 goto out;
219
220 inode->i_ctime = dir->i_ctime;
221 inode_dec_link_count(inode);
222 err = 0;
223out:
224 return err;
225}
226
227static int exofs_rmdir(struct inode *dir, struct dentry *dentry)
228{
229 struct inode *inode = dentry->d_inode;
230 int err = -ENOTEMPTY;
231
232 if (exofs_empty_dir(inode)) {
233 err = exofs_unlink(dir, dentry);
234 if (!err) {
235 inode->i_size = 0;
236 inode_dec_link_count(inode);
237 inode_dec_link_count(dir);
238 }
239 }
240 return err;
241}
242
243static int exofs_rename(struct inode *old_dir, struct dentry *old_dentry,
244 struct inode *new_dir, struct dentry *new_dentry)
245{
246 struct inode *old_inode = old_dentry->d_inode;
247 struct inode *new_inode = new_dentry->d_inode;
248 struct page *dir_page = NULL;
249 struct exofs_dir_entry *dir_de = NULL;
250 struct page *old_page;
251 struct exofs_dir_entry *old_de;
252 int err = -ENOENT;
253
254 old_de = exofs_find_entry(old_dir, old_dentry, &old_page);
255 if (!old_de)
256 goto out;
257
258 if (S_ISDIR(old_inode->i_mode)) {
259 err = -EIO;
260 dir_de = exofs_dotdot(old_inode, &dir_page);
261 if (!dir_de)
262 goto out_old;
263 }
264
265 if (new_inode) {
266 struct page *new_page;
267 struct exofs_dir_entry *new_de;
268
269 err = -ENOTEMPTY;
270 if (dir_de && !exofs_empty_dir(new_inode))
271 goto out_dir;
272
273 err = -ENOENT;
274 new_de = exofs_find_entry(new_dir, new_dentry, &new_page);
275 if (!new_de)
276 goto out_dir;
277 inode_inc_link_count(old_inode);
278 err = exofs_set_link(new_dir, new_de, new_page, old_inode);
279 new_inode->i_ctime = CURRENT_TIME;
280 if (dir_de)
281 drop_nlink(new_inode);
282 inode_dec_link_count(new_inode);
283 if (err)
284 goto out_dir;
285 } else {
286 if (dir_de) {
287 err = -EMLINK;
288 if (new_dir->i_nlink >= EXOFS_LINK_MAX)
289 goto out_dir;
290 }
291 inode_inc_link_count(old_inode);
292 err = exofs_add_link(new_dentry, old_inode);
293 if (err) {
294 inode_dec_link_count(old_inode);
295 goto out_dir;
296 }
297 if (dir_de)
298 inode_inc_link_count(new_dir);
299 }
300
301 old_inode->i_ctime = CURRENT_TIME;
302
303 exofs_delete_entry(old_de, old_page);
304 inode_dec_link_count(old_inode);
305
306 if (dir_de) {
307 err = exofs_set_link(old_inode, dir_de, dir_page, new_dir);
308 inode_dec_link_count(old_dir);
309 if (err)
310 goto out_dir;
311 }
312 return 0;
313
314
315out_dir:
316 if (dir_de) {
317 kunmap(dir_page);
318 page_cache_release(dir_page);
319 }
320out_old:
321 kunmap(old_page);
322 page_cache_release(old_page);
323out:
324 return err;
325}
326
327const struct inode_operations exofs_dir_inode_operations = {
328 .create = exofs_create,
329 .lookup = exofs_lookup,
330 .link = exofs_link,
331 .unlink = exofs_unlink,
332 .symlink = exofs_symlink,
333 .mkdir = exofs_mkdir,
334 .rmdir = exofs_rmdir,
335 .mknod = exofs_mknod,
336 .rename = exofs_rename,
337 .setattr = exofs_setattr,
338};
339
340const struct inode_operations exofs_special_inode_operations = {
341 .setattr = exofs_setattr,
342};
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-25 01:23:51 -0400