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28#include <asm/uaccess.h>
29#include <asm/system.h>
30
31#include <linux/errno.h>
32#include <linux/fs.h>
33#include <linux/time.h>
34#include <linux/stat.h>
35#include <linux/string.h>
36#include <linux/mm.h>
37#include <linux/smp_lock.h>
38#include <linux/buffer_head.h>
39#include <linux/writeback.h>
40
41#include "ufs_fs.h"
42#include "ufs.h"
43#include "swab.h"
44#include "util.h"
45
46static u64 ufs_frag_map(struct inode *inode, sector_t frag);
47
48static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4])
49{
50 struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi;
51 int ptrs = uspi->s_apb;
52 int ptrs_bits = uspi->s_apbshift;
53 const long direct_blocks = UFS_NDADDR,
54 indirect_blocks = ptrs,
55 double_blocks = (1 << (ptrs_bits * 2));
56 int n = 0;
57
58
59 UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks);
60 if (i_block < direct_blocks) {
61 offsets[n++] = i_block;
62 } else if ((i_block -= direct_blocks) < indirect_blocks) {
63 offsets[n++] = UFS_IND_BLOCK;
64 offsets[n++] = i_block;
65 } else if ((i_block -= indirect_blocks) < double_blocks) {
66 offsets[n++] = UFS_DIND_BLOCK;
67 offsets[n++] = i_block >> ptrs_bits;
68 offsets[n++] = i_block & (ptrs - 1);
69 } else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) {
70 offsets[n++] = UFS_TIND_BLOCK;
71 offsets[n++] = i_block >> (ptrs_bits * 2);
72 offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1);
73 offsets[n++] = i_block & (ptrs - 1);
74 } else {
75 ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big");
76 }
77 return n;
78}
79
80
81
82
83
84
85static u64 ufs_frag_map(struct inode *inode, sector_t frag)
86{
87 struct ufs_inode_info *ufsi = UFS_I(inode);
88 struct super_block *sb = inode->i_sb;
89 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
90 u64 mask = (u64) uspi->s_apbmask>>uspi->s_fpbshift;
91 int shift = uspi->s_apbshift-uspi->s_fpbshift;
92 sector_t offsets[4], *p;
93 int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets);
94 u64 ret = 0L;
95 __fs32 block;
96 __fs64 u2_block = 0L;
97 unsigned flags = UFS_SB(sb)->s_flags;
98 u64 temp = 0L;
99
100 UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth);
101 UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",
102 uspi->s_fpbshift, uspi->s_apbmask,
103 (unsigned long long)mask);
104
105 if (depth == 0)
106 return 0;
107
108 p = offsets;
109
110 lock_kernel();
111 if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
112 goto ufs2;
113
114 block = ufsi->i_u1.i_data[*p++];
115 if (!block)
116 goto out;
117 while (--depth) {
118 struct buffer_head *bh;
119 sector_t n = *p++;
120
121 bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift));
122 if (!bh)
123 goto out;
124 block = ((__fs32 *) bh->b_data)[n & mask];
125 brelse (bh);
126 if (!block)
127 goto out;
128 }
129 ret = (u64) (uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask));
130 goto out;
131ufs2:
132 u2_block = ufsi->i_u1.u2_i_data[*p++];
133 if (!u2_block)
134 goto out;
135
136
137 while (--depth) {
138 struct buffer_head *bh;
139 sector_t n = *p++;
140
141
142 temp = (u64)(uspi->s_sbbase) + fs64_to_cpu(sb, u2_block);
143 bh = sb_bread(sb, temp +(u64) (n>>shift));
144 if (!bh)
145 goto out;
146 u2_block = ((__fs64 *)bh->b_data)[n & mask];
147 brelse(bh);
148 if (!u2_block)
149 goto out;
150 }
151 temp = (u64)uspi->s_sbbase + fs64_to_cpu(sb, u2_block);
152 ret = temp + (u64) (frag & uspi->s_fpbmask);
153
154out:
155 unlock_kernel();
156 return ret;
157}
158
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170
171
172static struct buffer_head *
173ufs_inode_getfrag(struct inode *inode, u64 fragment,
174 sector_t new_fragment, unsigned int required, int *err,
175 long *phys, int *new, struct page *locked_page)
176{
177 struct ufs_inode_info *ufsi = UFS_I(inode);
178 struct super_block *sb = inode->i_sb;
179 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
180 struct buffer_head * result;
181 unsigned blockoff, lastblockoff;
182 u64 tmp, goal, lastfrag, block, lastblock;
183 void *p, *p2;
184
185 UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, "
186 "metadata %d\n", inode->i_ino, (unsigned long long)fragment,
187 (unsigned long long)new_fragment, required, !phys);
188
189
190
191
192
193
194 block = ufs_fragstoblks (fragment);
195 blockoff = ufs_fragnum (fragment);
196 p = ufs_get_direct_data_ptr(uspi, ufsi, block);
197
198 goal = 0;
199
200repeat:
201 tmp = ufs_data_ptr_to_cpu(sb, p);
202
203 lastfrag = ufsi->i_lastfrag;
204 if (tmp && fragment < lastfrag) {
205 if (!phys) {
206 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
207 if (tmp == ufs_data_ptr_to_cpu(sb, p)) {
208 UFSD("EXIT, result %llu\n",
209 (unsigned long long)tmp + blockoff);
210 return result;
211 }
212 brelse (result);
213 goto repeat;
214 } else {
215 *phys = uspi->s_sbbase + tmp + blockoff;
216 return NULL;
217 }
218 }
219
220 lastblock = ufs_fragstoblks (lastfrag);
221 lastblockoff = ufs_fragnum (lastfrag);
222
223
224
225 if (lastblock < block) {
226
227
228
229 if (lastblockoff) {
230 p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock);
231 tmp = ufs_new_fragments(inode, p2, lastfrag,
232 ufs_data_ptr_to_cpu(sb, p2),
233 uspi->s_fpb - lastblockoff,
234 err, locked_page);
235 if (!tmp) {
236 if (lastfrag != ufsi->i_lastfrag)
237 goto repeat;
238 else
239 return NULL;
240 }
241 lastfrag = ufsi->i_lastfrag;
242
243 }
244 tmp = ufs_data_ptr_to_cpu(sb,
245 ufs_get_direct_data_ptr(uspi, ufsi,
246 lastblock));
247 if (tmp)
248 goal = tmp + uspi->s_fpb;
249 tmp = ufs_new_fragments (inode, p, fragment - blockoff,
250 goal, required + blockoff,
251 err,
252 phys != NULL ? locked_page : NULL);
253 } else if (lastblock == block) {
254
255
256
257 tmp = ufs_new_fragments(inode, p, fragment -
258 (blockoff - lastblockoff),
259 ufs_data_ptr_to_cpu(sb, p),
260 required + (blockoff - lastblockoff),
261 err, phys != NULL ? locked_page : NULL);
262 } else {
263
264
265
266 if (block) {
267 tmp = ufs_data_ptr_to_cpu(sb,
268 ufs_get_direct_data_ptr(uspi, ufsi, block - 1));
269 if (tmp)
270 goal = tmp + uspi->s_fpb;
271 }
272 tmp = ufs_new_fragments(inode, p, fragment - blockoff,
273 goal, uspi->s_fpb, err,
274 phys != NULL ? locked_page : NULL);
275 }
276 if (!tmp) {
277 if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) ||
278 (blockoff && lastfrag != ufsi->i_lastfrag))
279 goto repeat;
280 *err = -ENOSPC;
281 return NULL;
282 }
283
284 if (!phys) {
285 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
286 } else {
287 *phys = uspi->s_sbbase + tmp + blockoff;
288 result = NULL;
289 *err = 0;
290 *new = 1;
291 }
292
293 inode->i_ctime = CURRENT_TIME_SEC;
294 if (IS_SYNC(inode))
295 ufs_sync_inode (inode);
296 mark_inode_dirty(inode);
297 UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff);
298 return result;
299
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313
314}
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328
329static struct buffer_head *
330ufs_inode_getblock(struct inode *inode, struct buffer_head *bh,
331 u64 fragment, sector_t new_fragment, int *err,
332 long *phys, int *new, struct page *locked_page)
333{
334 struct super_block *sb = inode->i_sb;
335 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
336 struct buffer_head * result;
337 unsigned blockoff;
338 u64 tmp, goal, block;
339 void *p;
340
341 block = ufs_fragstoblks (fragment);
342 blockoff = ufs_fragnum (fragment);
343
344 UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n",
345 inode->i_ino, (unsigned long long)fragment,
346 (unsigned long long)new_fragment, !phys);
347
348 result = NULL;
349 if (!bh)
350 goto out;
351 if (!buffer_uptodate(bh)) {
352 ll_rw_block (READ, 1, &bh);
353 wait_on_buffer (bh);
354 if (!buffer_uptodate(bh))
355 goto out;
356 }
357 if (uspi->fs_magic == UFS2_MAGIC)
358 p = (__fs64 *)bh->b_data + block;
359 else
360 p = (__fs32 *)bh->b_data + block;
361repeat:
362 tmp = ufs_data_ptr_to_cpu(sb, p);
363 if (tmp) {
364 if (!phys) {
365 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
366 if (tmp == ufs_data_ptr_to_cpu(sb, p))
367 goto out;
368 brelse (result);
369 goto repeat;
370 } else {
371 *phys = uspi->s_sbbase + tmp + blockoff;
372 goto out;
373 }
374 }
375
376 if (block && (uspi->fs_magic == UFS2_MAGIC ?
377 (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) :
378 (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1]))))
379 goal = tmp + uspi->s_fpb;
380 else
381 goal = bh->b_blocknr + uspi->s_fpb;
382 tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal,
383 uspi->s_fpb, err, locked_page);
384 if (!tmp) {
385 if (ufs_data_ptr_to_cpu(sb, p))
386 goto repeat;
387 goto out;
388 }
389
390
391 if (!phys) {
392 result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
393 } else {
394 *phys = uspi->s_sbbase + tmp + blockoff;
395 *new = 1;
396 }
397
398 mark_buffer_dirty(bh);
399 if (IS_SYNC(inode))
400 sync_dirty_buffer(bh);
401 inode->i_ctime = CURRENT_TIME_SEC;
402 mark_inode_dirty(inode);
403 UFSD("result %llu\n", (unsigned long long)tmp + blockoff);
404out:
405 brelse (bh);
406 UFSD("EXIT\n");
407 return result;
408}
409
410
411
412
413
414
415int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
416{
417 struct super_block * sb = inode->i_sb;
418 struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi;
419 struct buffer_head * bh;
420 int ret, err, new;
421 unsigned long ptr,phys;
422 u64 phys64 = 0;
423
424 if (!create) {
425 phys64 = ufs_frag_map(inode, fragment);
426 UFSD("phys64 = %llu\n", (unsigned long long)phys64);
427 if (phys64)
428 map_bh(bh_result, sb, phys64);
429 return 0;
430 }
431
432
433
434 err = -EIO;
435 new = 0;
436 ret = 0;
437 bh = NULL;
438
439 lock_kernel();
440
441 UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment);
442 if (fragment >
443 ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb)
444 << uspi->s_fpbshift))
445 goto abort_too_big;
446
447 err = 0;
448 ptr = fragment;
449
450
451
452
453
454#define GET_INODE_DATABLOCK(x) \
455 ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\
456 bh_result->b_page)
457#define GET_INODE_PTR(x) \
458 ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\
459 bh_result->b_page)
460#define GET_INDIRECT_DATABLOCK(x) \
461 ufs_inode_getblock(inode, bh, x, fragment, \
462 &err, &phys, &new, bh_result->b_page)
463#define GET_INDIRECT_PTR(x) \
464 ufs_inode_getblock(inode, bh, x, fragment, \
465 &err, NULL, NULL, NULL)
466
467 if (ptr < UFS_NDIR_FRAGMENT) {
468 bh = GET_INODE_DATABLOCK(ptr);
469 goto out;
470 }
471 ptr -= UFS_NDIR_FRAGMENT;
472 if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) {
473 bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift));
474 goto get_indirect;
475 }
476 ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift);
477 if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) {
478 bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift));
479 goto get_double;
480 }
481 ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift);
482 bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift));
483 bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask);
484get_double:
485 bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask);
486get_indirect:
487 bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask);
488
489#undef GET_INODE_DATABLOCK
490#undef GET_INODE_PTR
491#undef GET_INDIRECT_DATABLOCK
492#undef GET_INDIRECT_PTR
493
494out:
495 if (err)
496 goto abort;
497 if (new)
498 set_buffer_new(bh_result);
499 map_bh(bh_result, sb, phys);
500abort:
501 unlock_kernel();
502 return err;
503
504abort_too_big:
505 ufs_warning(sb, "ufs_get_block", "block > big");
506 goto abort;
507}
508
509static struct buffer_head *ufs_getfrag(struct inode *inode,
510 unsigned int fragment,
511 int create, int *err)
512{
513 struct buffer_head dummy;
514 int error;
515
516 dummy.b_state = 0;
517 dummy.b_blocknr = -1000;
518 error = ufs_getfrag_block(inode, fragment, &dummy, create);
519 *err = error;
520 if (!error && buffer_mapped(&dummy)) {
521 struct buffer_head *bh;
522 bh = sb_getblk(inode->i_sb, dummy.b_blocknr);
523 if (buffer_new(&dummy)) {
524 memset(bh->b_data, 0, inode->i_sb->s_blocksize);
525 set_buffer_uptodate(bh);
526 mark_buffer_dirty(bh);
527 }
528 return bh;
529 }
530 return NULL;
531}
532
533struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment,
534 int create, int * err)
535{
536 struct buffer_head * bh;
537
538 UFSD("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment);
539 bh = ufs_getfrag (inode, fragment, create, err);
540 if (!bh || buffer_uptodate(bh))
541 return bh;
542 ll_rw_block (READ, 1, &bh);
543 wait_on_buffer (bh);
544 if (buffer_uptodate(bh))
545 return bh;
546 brelse (bh);
547 *err = -EIO;
548 return NULL;
549}
550
551static int ufs_writepage(struct page *page, struct writeback_control *wbc)
552{
553 return block_write_full_page(page,ufs_getfrag_block,wbc);
554}
555
556static int ufs_readpage(struct file *file, struct page *page)
557{
558 return block_read_full_page(page,ufs_getfrag_block);
559}
560
561int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len)
562{
563 return __block_write_begin(page, pos, len, ufs_getfrag_block);
564}
565
566static int ufs_write_begin(struct file *file, struct address_space *mapping,
567 loff_t pos, unsigned len, unsigned flags,
568 struct page **pagep, void **fsdata)
569{
570 int ret;
571
572 ret = block_write_begin(mapping, pos, len, flags, pagep,
573 ufs_getfrag_block);
574 if (unlikely(ret)) {
575 loff_t isize = mapping->host->i_size;
576 if (pos + len > isize)
577 vmtruncate(mapping->host, isize);
578 }
579
580 return ret;
581}
582
583static sector_t ufs_bmap(struct address_space *mapping, sector_t block)
584{
585 return generic_block_bmap(mapping,block,ufs_getfrag_block);
586}
587
588const struct address_space_operations ufs_aops = {
589 .readpage = ufs_readpage,
590 .writepage = ufs_writepage,
591 .sync_page = block_sync_page,
592 .write_begin = ufs_write_begin,
593 .write_end = generic_write_end,
594 .bmap = ufs_bmap
595};
596
597static void ufs_set_inode_ops(struct inode *inode)
598{
599 if (S_ISREG(inode->i_mode)) {
600 inode->i_op = &ufs_file_inode_operations;
601 inode->i_fop = &ufs_file_operations;
602 inode->i_mapping->a_ops = &ufs_aops;
603 } else if (S_ISDIR(inode->i_mode)) {
604 inode->i_op = &ufs_dir_inode_operations;
605 inode->i_fop = &ufs_dir_operations;
606 inode->i_mapping->a_ops = &ufs_aops;
607 } else if (S_ISLNK(inode->i_mode)) {
608 if (!inode->i_blocks)
609 inode->i_op = &ufs_fast_symlink_inode_operations;
610 else {
611 inode->i_op = &ufs_symlink_inode_operations;
612 inode->i_mapping->a_ops = &ufs_aops;
613 }
614 } else
615 init_special_inode(inode, inode->i_mode,
616 ufs_get_inode_dev(inode->i_sb, UFS_I(inode)));
617}
618
619static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
620{
621 struct ufs_inode_info *ufsi = UFS_I(inode);
622 struct super_block *sb = inode->i_sb;
623 mode_t mode;
624
625
626
627
628 inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode);
629 inode->i_nlink = fs16_to_cpu(sb, ufs_inode->ui_nlink);
630 if (inode->i_nlink == 0) {
631 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
632 return -1;
633 }
634
635
636
637
638 inode->i_uid = ufs_get_inode_uid(sb, ufs_inode);
639 inode->i_gid = ufs_get_inode_gid(sb, ufs_inode);
640
641 inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size);
642 inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec);
643 inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec);
644 inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec);
645 inode->i_mtime.tv_nsec = 0;
646 inode->i_atime.tv_nsec = 0;
647 inode->i_ctime.tv_nsec = 0;
648 inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks);
649 inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen);
650 ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags);
651 ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
652 ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
653
654
655 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
656 memcpy(ufsi->i_u1.i_data, &ufs_inode->ui_u2.ui_addr,
657 sizeof(ufs_inode->ui_u2.ui_addr));
658 } else {
659 memcpy(ufsi->i_u1.i_symlink, ufs_inode->ui_u2.ui_symlink,
660 sizeof(ufs_inode->ui_u2.ui_symlink) - 1);
661 ufsi->i_u1.i_symlink[sizeof(ufs_inode->ui_u2.ui_symlink) - 1] = 0;
662 }
663 return 0;
664}
665
666static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode)
667{
668 struct ufs_inode_info *ufsi = UFS_I(inode);
669 struct super_block *sb = inode->i_sb;
670 mode_t mode;
671
672 UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino);
673
674
675
676 inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode);
677 inode->i_nlink = fs16_to_cpu(sb, ufs2_inode->ui_nlink);
678 if (inode->i_nlink == 0) {
679 ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
680 return -1;
681 }
682
683
684
685
686 inode->i_uid = fs32_to_cpu(sb, ufs2_inode->ui_uid);
687 inode->i_gid = fs32_to_cpu(sb, ufs2_inode->ui_gid);
688
689 inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size);
690 inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime);
691 inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime);
692 inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime);
693 inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec);
694 inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec);
695 inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec);
696 inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks);
697 inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen);
698 ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags);
699
700
701
702
703
704 if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
705 memcpy(ufsi->i_u1.u2_i_data, &ufs2_inode->ui_u2.ui_addr,
706 sizeof(ufs2_inode->ui_u2.ui_addr));
707 } else {
708 memcpy(ufsi->i_u1.i_symlink, ufs2_inode->ui_u2.ui_symlink,
709 sizeof(ufs2_inode->ui_u2.ui_symlink) - 1);
710 ufsi->i_u1.i_symlink[sizeof(ufs2_inode->ui_u2.ui_symlink) - 1] = 0;
711 }
712 return 0;
713}
714
715struct inode *ufs_iget(struct super_block *sb, unsigned long ino)
716{
717 struct ufs_inode_info *ufsi;
718 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
719 struct buffer_head * bh;
720 struct inode *inode;
721 int err;
722
723 UFSD("ENTER, ino %lu\n", ino);
724
725 if (ino < UFS_ROOTINO || ino > (uspi->s_ncg * uspi->s_ipg)) {
726 ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n",
727 ino);
728 return ERR_PTR(-EIO);
729 }
730
731 inode = iget_locked(sb, ino);
732 if (!inode)
733 return ERR_PTR(-ENOMEM);
734 if (!(inode->i_state & I_NEW))
735 return inode;
736
737 ufsi = UFS_I(inode);
738
739 bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino));
740 if (!bh) {
741 ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n",
742 inode->i_ino);
743 goto bad_inode;
744 }
745 if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
746 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
747
748 err = ufs2_read_inode(inode,
749 ufs2_inode + ufs_inotofsbo(inode->i_ino));
750 } else {
751 struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data;
752
753 err = ufs1_read_inode(inode,
754 ufs_inode + ufs_inotofsbo(inode->i_ino));
755 }
756
757 if (err)
758 goto bad_inode;
759 inode->i_version++;
760 ufsi->i_lastfrag =
761 (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift;
762 ufsi->i_dir_start_lookup = 0;
763 ufsi->i_osync = 0;
764
765 ufs_set_inode_ops(inode);
766
767 brelse(bh);
768
769 UFSD("EXIT\n");
770 unlock_new_inode(inode);
771 return inode;
772
773bad_inode:
774 iget_failed(inode);
775 return ERR_PTR(-EIO);
776}
777
778static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode)
779{
780 struct super_block *sb = inode->i_sb;
781 struct ufs_inode_info *ufsi = UFS_I(inode);
782
783 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
784 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
785
786 ufs_set_inode_uid(sb, ufs_inode, inode->i_uid);
787 ufs_set_inode_gid(sb, ufs_inode, inode->i_gid);
788
789 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
790 ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec);
791 ufs_inode->ui_atime.tv_usec = 0;
792 ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec);
793 ufs_inode->ui_ctime.tv_usec = 0;
794 ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec);
795 ufs_inode->ui_mtime.tv_usec = 0;
796 ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks);
797 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
798 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
799
800 if ((UFS_SB(sb)->s_flags & UFS_UID_MASK) == UFS_UID_EFT) {
801 ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, ufsi->i_shadow);
802 ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, ufsi->i_oeftflag);
803 }
804
805 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
806
807 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.i_data[0];
808 } else if (inode->i_blocks) {
809 memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.i_data,
810 sizeof(ufs_inode->ui_u2.ui_addr));
811 }
812 else {
813 memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
814 sizeof(ufs_inode->ui_u2.ui_symlink));
815 }
816
817 if (!inode->i_nlink)
818 memset (ufs_inode, 0, sizeof(struct ufs_inode));
819}
820
821static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode)
822{
823 struct super_block *sb = inode->i_sb;
824 struct ufs_inode_info *ufsi = UFS_I(inode);
825
826 UFSD("ENTER\n");
827 ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
828 ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
829
830 ufs_inode->ui_uid = cpu_to_fs32(sb, inode->i_uid);
831 ufs_inode->ui_gid = cpu_to_fs32(sb, inode->i_gid);
832
833 ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
834 ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec);
835 ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec);
836 ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec);
837 ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec);
838 ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec);
839 ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec);
840
841 ufs_inode->ui_blocks = cpu_to_fs64(sb, inode->i_blocks);
842 ufs_inode->ui_flags = cpu_to_fs32(sb, ufsi->i_flags);
843 ufs_inode->ui_gen = cpu_to_fs32(sb, inode->i_generation);
844
845 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
846
847 ufs_inode->ui_u2.ui_addr.ui_db[0] = ufsi->i_u1.u2_i_data[0];
848 } else if (inode->i_blocks) {
849 memcpy(&ufs_inode->ui_u2.ui_addr, ufsi->i_u1.u2_i_data,
850 sizeof(ufs_inode->ui_u2.ui_addr));
851 } else {
852 memcpy(&ufs_inode->ui_u2.ui_symlink, ufsi->i_u1.i_symlink,
853 sizeof(ufs_inode->ui_u2.ui_symlink));
854 }
855
856 if (!inode->i_nlink)
857 memset (ufs_inode, 0, sizeof(struct ufs2_inode));
858 UFSD("EXIT\n");
859}
860
861static int ufs_update_inode(struct inode * inode, int do_sync)
862{
863 struct super_block *sb = inode->i_sb;
864 struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
865 struct buffer_head * bh;
866
867 UFSD("ENTER, ino %lu\n", inode->i_ino);
868
869 if (inode->i_ino < UFS_ROOTINO ||
870 inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) {
871 ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino);
872 return -1;
873 }
874
875 bh = sb_bread(sb, ufs_inotofsba(inode->i_ino));
876 if (!bh) {
877 ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino);
878 return -1;
879 }
880 if (uspi->fs_magic == UFS2_MAGIC) {
881 struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
882
883 ufs2_update_inode(inode,
884 ufs2_inode + ufs_inotofsbo(inode->i_ino));
885 } else {
886 struct ufs_inode *ufs_inode = (struct ufs_inode *) bh->b_data;
887
888 ufs1_update_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino));
889 }
890
891 mark_buffer_dirty(bh);
892 if (do_sync)
893 sync_dirty_buffer(bh);
894 brelse (bh);
895
896 UFSD("EXIT\n");
897 return 0;
898}
899
900int ufs_write_inode(struct inode *inode, struct writeback_control *wbc)
901{
902 int ret;
903 lock_kernel();
904 ret = ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
905 unlock_kernel();
906 return ret;
907}
908
909int ufs_sync_inode (struct inode *inode)
910{
911 return ufs_update_inode (inode, 1);
912}
913
914void ufs_evict_inode(struct inode * inode)
915{
916 int want_delete = 0;
917
918 if (!inode->i_nlink && !is_bad_inode(inode))
919 want_delete = 1;
920
921 truncate_inode_pages(&inode->i_data, 0);
922 if (want_delete) {
923 loff_t old_i_size;
924
925 lock_kernel();
926 mark_inode_dirty(inode);
927 ufs_update_inode(inode, IS_SYNC(inode));
928 old_i_size = inode->i_size;
929 inode->i_size = 0;
930 if (inode->i_blocks && ufs_truncate(inode, old_i_size))
931 ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n");
932 unlock_kernel();
933 }
934
935 invalidate_inode_buffers(inode);
936 end_writeback(inode);
937
938 if (want_delete) {
939 lock_kernel();
940 ufs_free_inode (inode);
941 unlock_kernel();
942 }
943}
944
