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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / fs / jffs2 / debug.c
blobe0b76c87a91af298712a5ebc06b3ac7e8a953238
1 /*
2 * JFFS2 -- Journalling Flash File System, Version 2.
3 *
4 * Copyright © 2001-2007 Red Hat, Inc.
5 * Copyright © 2004-2010 David Woodhouse <dwmw2@infradead.org>
6 *
7 * Created by David Woodhouse <dwmw2@infradead.org>
8 *
9 * For licensing information, see the file 'LICENCE' in this directory.
10 *
11 */
12
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15 #include <linux/pagemap.h>
16 #include <linux/crc32.h>
17 #include <linux/jffs2.h>
18 #include <linux/mtd/mtd.h>
19 #include <linux/slab.h>
20 #include "nodelist.h"
21 #include "debug.h"
22
23 #ifdef JFFS2_DBG_SANITY_CHECKS
24
25 void
26 __jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
27 struct jffs2_eraseblock *jeb)
28 {
29 if (unlikely(jeb && jeb->used_size + jeb->dirty_size +
30 jeb->free_size + jeb->wasted_size +
31 jeb->unchecked_size != c->sector_size)) {
32 JFFS2_ERROR("eeep, space accounting for block at 0x%08x is screwed.\n", jeb->offset);
33 JFFS2_ERROR("free %#08x + dirty %#08x + used %#08x + wasted %#08x + unchecked %#08x != total %#08x.\n",
34 jeb->free_size, jeb->dirty_size, jeb->used_size,
35 jeb->wasted_size, jeb->unchecked_size, c->sector_size);
36 BUG();
37 }
38
39 if (unlikely(c->used_size + c->dirty_size + c->free_size + c->erasing_size + c->bad_size
40 + c->wasted_size + c->unchecked_size != c->flash_size)) {
41 JFFS2_ERROR("eeep, space accounting superblock info is screwed.\n");
42 JFFS2_ERROR("free %#08x + dirty %#08x + used %#08x + erasing %#08x + bad %#08x + wasted %#08x + unchecked %#08x != total %#08x.\n",
43 c->free_size, c->dirty_size, c->used_size, c->erasing_size, c->bad_size,
44 c->wasted_size, c->unchecked_size, c->flash_size);
45 BUG();
46 }
47 }
48
49 void
50 __jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
51 struct jffs2_eraseblock *jeb)
52 {
53 spin_lock(&c->erase_completion_lock);
54 jffs2_dbg_acct_sanity_check_nolock(c, jeb);
55 spin_unlock(&c->erase_completion_lock);
56 }
57
58 #endif /* JFFS2_DBG_SANITY_CHECKS */
59
60 #ifdef JFFS2_DBG_PARANOIA_CHECKS
61 /*
62 * Check the fragtree.
63 */
64 void
65 __jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f)
66 {
67 mutex_lock(&f->sem);
68 __jffs2_dbg_fragtree_paranoia_check_nolock(f);
69 mutex_unlock(&f->sem);
70 }
71
72 void
73 __jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f)
74 {
75 struct jffs2_node_frag *frag;
76 int bitched = 0;
77
78 for (frag = frag_first(&f->fragtree); frag; frag = frag_next(frag)) {
79 struct jffs2_full_dnode *fn = frag->node;
80
81 if (!fn || !fn->raw)
82 continue;
83
84 if (ref_flags(fn->raw) == REF_PRISTINE) {
85 if (fn->frags > 1) {
86 JFFS2_ERROR("REF_PRISTINE node at 0x%08x had %d frags. Tell dwmw2.\n",
87 ref_offset(fn->raw), fn->frags);
88 bitched = 1;
89 }
90
91 /* A hole node which isn't multi-page should be garbage-collected
92 and merged anyway, so we just check for the frag size here,
93 rather than mucking around with actually reading the node
94 and checking the compression type, which is the real way
95 to tell a hole node. */
96 if (frag->ofs & (PAGE_CACHE_SIZE-1) && frag_prev(frag)
97 && frag_prev(frag)->size < PAGE_CACHE_SIZE && frag_prev(frag)->node) {
98 JFFS2_ERROR("REF_PRISTINE node at 0x%08x had a previous non-hole frag in the same page. Tell dwmw2.\n",
99 ref_offset(fn->raw));
100 bitched = 1;
101 }
102
103 if ((frag->ofs+frag->size) & (PAGE_CACHE_SIZE-1) && frag_next(frag)
104 && frag_next(frag)->size < PAGE_CACHE_SIZE && frag_next(frag)->node) {
105 JFFS2_ERROR("REF_PRISTINE node at 0x%08x (%08x-%08x) had a following non-hole frag in the same page. Tell dwmw2.\n",
106 ref_offset(fn->raw), frag->ofs, frag->ofs+frag->size);
107 bitched = 1;
108 }
109 }
110 }
111
112 if (bitched) {
113 JFFS2_ERROR("fragtree is corrupted.\n");
114 __jffs2_dbg_dump_fragtree_nolock(f);
115 BUG();
116 }
117 }
118
119 /*
120 * Check if the flash contains all 0xFF before we start writing.
121 */
122 void
123 __jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
124 uint32_t ofs, int len)
125 {
126 size_t retlen;
127 int ret, i;
128 unsigned char *buf;
129
130 buf = kmalloc(len, GFP_KERNEL);
131 if (!buf)
132 return;
133
134 ret = jffs2_flash_read(c, ofs, len, &retlen, buf);
135 if (ret || (retlen != len)) {
136 JFFS2_WARNING("read %d bytes failed or short. ret %d, retlen %zd.\n",
137 len, ret, retlen);
138 kfree(buf);
139 return;
140 }
141
142 ret = 0;
143 for (i = 0; i < len; i++)
144 if (buf[i] != 0xff)
145 ret = 1;
146
147 if (ret) {
148 JFFS2_ERROR("argh, about to write node to %#08x on flash, but there are data already there. The first corrupted byte is at %#08x offset.\n",
149 ofs, ofs + i);
150 __jffs2_dbg_dump_buffer(buf, len, ofs);
151 kfree(buf);
152 BUG();
153 }
154
155 kfree(buf);
156 }
157
158 void __jffs2_dbg_superblock_counts(struct jffs2_sb_info *c)
159 {
160 struct jffs2_eraseblock *jeb;
161 uint32_t free = 0, dirty = 0, used = 0, wasted = 0,
162 erasing = 0, bad = 0, unchecked = 0;
163 int nr_counted = 0;
164 int dump = 0;
165
166 if (c->gcblock) {
167 nr_counted++;
168 free += c->gcblock->free_size;
169 dirty += c->gcblock->dirty_size;
170 used += c->gcblock->used_size;
171 wasted += c->gcblock->wasted_size;
172 unchecked += c->gcblock->unchecked_size;
173 }
174 if (c->nextblock) {
175 nr_counted++;
176 free += c->nextblock->free_size;
177 dirty += c->nextblock->dirty_size;
178 used += c->nextblock->used_size;
179 wasted += c->nextblock->wasted_size;
180 unchecked += c->nextblock->unchecked_size;
181 }
182 list_for_each_entry(jeb, &c->clean_list, list) {
183 nr_counted++;
184 free += jeb->free_size;
185 dirty += jeb->dirty_size;
186 used += jeb->used_size;
187 wasted += jeb->wasted_size;
188 unchecked += jeb->unchecked_size;
189 }
190 list_for_each_entry(jeb, &c->very_dirty_list, list) {
191 nr_counted++;
192 free += jeb->free_size;
193 dirty += jeb->dirty_size;
194 used += jeb->used_size;
195 wasted += jeb->wasted_size;
196 unchecked += jeb->unchecked_size;
197 }
198 list_for_each_entry(jeb, &c->dirty_list, list) {
199 nr_counted++;
200 free += jeb->free_size;
201 dirty += jeb->dirty_size;
202 used += jeb->used_size;
203 wasted += jeb->wasted_size;
204 unchecked += jeb->unchecked_size;
205 }
206 list_for_each_entry(jeb, &c->erasable_list, list) {
207 nr_counted++;
208 free += jeb->free_size;
209 dirty += jeb->dirty_size;
210 used += jeb->used_size;
211 wasted += jeb->wasted_size;
212 unchecked += jeb->unchecked_size;
213 }
214 list_for_each_entry(jeb, &c->erasable_pending_wbuf_list, list) {
215 nr_counted++;
216 free += jeb->free_size;
217 dirty += jeb->dirty_size;
218 used += jeb->used_size;
219 wasted += jeb->wasted_size;
220 unchecked += jeb->unchecked_size;
221 }
222 list_for_each_entry(jeb, &c->erase_pending_list, list) {
223 nr_counted++;
224 free += jeb->free_size;
225 dirty += jeb->dirty_size;
226 used += jeb->used_size;
227 wasted += jeb->wasted_size;
228 unchecked += jeb->unchecked_size;
229 }
230 list_for_each_entry(jeb, &c->free_list, list) {
231 nr_counted++;
232 free += jeb->free_size;
233 dirty += jeb->dirty_size;
234 used += jeb->used_size;
235 wasted += jeb->wasted_size;
236 unchecked += jeb->unchecked_size;
237 }
238 list_for_each_entry(jeb, &c->bad_used_list, list) {
239 nr_counted++;
240 free += jeb->free_size;
241 dirty += jeb->dirty_size;
242 used += jeb->used_size;
243 wasted += jeb->wasted_size;
244 unchecked += jeb->unchecked_size;
245 }
246
247 list_for_each_entry(jeb, &c->erasing_list, list) {
248 nr_counted++;
249 erasing += c->sector_size;
250 }
251 list_for_each_entry(jeb, &c->erase_checking_list, list) {
252 nr_counted++;
253 erasing += c->sector_size;
254 }
255 list_for_each_entry(jeb, &c->erase_complete_list, list) {
256 nr_counted++;
257 erasing += c->sector_size;
258 }
259 list_for_each_entry(jeb, &c->bad_list, list) {
260 nr_counted++;
261 bad += c->sector_size;
262 }
263
264 #define check(sz) \
265 if (sz != c->sz##_size) { \
266 printk(KERN_WARNING #sz "_size mismatch counted 0x%x, c->" #sz "_size 0x%x\n", \
267 sz, c->sz##_size); \
268 dump = 1; \
269 }
270 check(free);
271 check(dirty);
272 check(used);
273 check(wasted);
274 check(unchecked);
275 check(bad);
276 check(erasing);
277 #undef check
278
279 if (nr_counted != c->nr_blocks) {
280 printk(KERN_WARNING "%s counted only 0x%x blocks of 0x%x. Where are the others?\n",
281 __func__, nr_counted, c->nr_blocks);
282 dump = 1;
283 }
284
285 if (dump) {
286 __jffs2_dbg_dump_block_lists_nolock(c);
287 BUG();
288 }
289 }
290
291 /*
292 * Check the space accounting and node_ref list correctness for the JFFS2 erasable block 'jeb'.
293 */
294 void
295 __jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
296 struct jffs2_eraseblock *jeb)
297 {
298 spin_lock(&c->erase_completion_lock);
299 __jffs2_dbg_acct_paranoia_check_nolock(c, jeb);
300 spin_unlock(&c->erase_completion_lock);
301 }
302
303 void
304 __jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
305 struct jffs2_eraseblock *jeb)
306 {
307 uint32_t my_used_size = 0;
308 uint32_t my_unchecked_size = 0;
309 uint32_t my_dirty_size = 0;
310 struct jffs2_raw_node_ref *ref2 = jeb->first_node;
311
312 while (ref2) {
313 uint32_t totlen = ref_totlen(c, jeb, ref2);
314
315 if (ref_offset(ref2) < jeb->offset ||
316 ref_offset(ref2) > jeb->offset + c->sector_size) {
317 JFFS2_ERROR("node_ref %#08x shouldn't be in block at %#08x.\n",
318 ref_offset(ref2), jeb->offset);
319 goto error;
320
321 }
322 if (ref_flags(ref2) == REF_UNCHECKED)
323 my_unchecked_size += totlen;
324 else if (!ref_obsolete(ref2))
325 my_used_size += totlen;
326 else
327 my_dirty_size += totlen;
328
329 if ((!ref_next(ref2)) != (ref2 == jeb->last_node)) {
330 JFFS2_ERROR("node_ref for node at %#08x (mem %p) has next at %#08x (mem %p), last_node is at %#08x (mem %p).\n",
331 ref_offset(ref2), ref2, ref_offset(ref_next(ref2)), ref_next(ref2),
332 ref_offset(jeb->last_node), jeb->last_node);
333 goto error;
334 }
335 ref2 = ref_next(ref2);
336 }
337
338 if (my_used_size != jeb->used_size) {
339 JFFS2_ERROR("Calculated used size %#08x != stored used size %#08x.\n",
340 my_used_size, jeb->used_size);
341 goto error;
342 }
343
344 if (my_unchecked_size != jeb->unchecked_size) {
345 JFFS2_ERROR("Calculated unchecked size %#08x != stored unchecked size %#08x.\n",
346 my_unchecked_size, jeb->unchecked_size);
347 goto error;
348 }
349
350 #if 0
351 /* This should work when we implement ref->__totlen elemination */
352 if (my_dirty_size != jeb->dirty_size + jeb->wasted_size) {
353 JFFS2_ERROR("Calculated dirty+wasted size %#08x != stored dirty + wasted size %#08x\n",
354 my_dirty_size, jeb->dirty_size + jeb->wasted_size);
355 goto error;
356 }
357
358 if (jeb->free_size == 0
359 && my_used_size + my_unchecked_size + my_dirty_size != c->sector_size) {
360 JFFS2_ERROR("The sum of all nodes in block (%#x) != size of block (%#x)\n",
361 my_used_size + my_unchecked_size + my_dirty_size,
362 c->sector_size);
363 goto error;
364 }
365 #endif
366
367 if (!(c->flags & (JFFS2_SB_FLAG_BUILDING|JFFS2_SB_FLAG_SCANNING)))
368 __jffs2_dbg_superblock_counts(c);
369
370 return;
371
372 error:
373 __jffs2_dbg_dump_node_refs_nolock(c, jeb);
374 __jffs2_dbg_dump_jeb_nolock(jeb);
375 __jffs2_dbg_dump_block_lists_nolock(c);
376 BUG();
377
378 }
379 #endif /* JFFS2_DBG_PARANOIA_CHECKS */
380
381 #if defined(JFFS2_DBG_DUMPS) || defined(JFFS2_DBG_PARANOIA_CHECKS)
382 /*
383 * Dump the node_refs of the 'jeb' JFFS2 eraseblock.
384 */
385 void
386 __jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,
387 struct jffs2_eraseblock *jeb)
388 {
389 spin_lock(&c->erase_completion_lock);
390 __jffs2_dbg_dump_node_refs_nolock(c, jeb);
391 spin_unlock(&c->erase_completion_lock);
392 }
393
394 void
395 __jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
396 struct jffs2_eraseblock *jeb)
397 {
398 struct jffs2_raw_node_ref *ref;
399 int i = 0;
400
401 printk(JFFS2_DBG_MSG_PREFIX " Dump node_refs of the eraseblock %#08x\n", jeb->offset);
402 if (!jeb->first_node) {
403 printk(JFFS2_DBG_MSG_PREFIX " no nodes in the eraseblock %#08x\n", jeb->offset);
404 return;
405 }
406
407 printk(JFFS2_DBG);
408 for (ref = jeb->first_node; ; ref = ref_next(ref)) {
409 printk("%#08x", ref_offset(ref));
410 #ifdef TEST_TOTLEN
411 printk("(%x)", ref->__totlen);
412 #endif
413 if (ref_next(ref))
414 printk("->");
415 else
416 break;
417 if (++i == 4) {
418 i = 0;
419 printk("\n" JFFS2_DBG);
420 }
421 }
422 printk("\n");
423 }
424
425 /*
426 * Dump an eraseblock's space accounting.
427 */
428 void
429 __jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
430 {
431 spin_lock(&c->erase_completion_lock);
432 __jffs2_dbg_dump_jeb_nolock(jeb);
433 spin_unlock(&c->erase_completion_lock);
434 }
435
436 void
437 __jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb)
438 {
439 if (!jeb)
440 return;
441
442 printk(JFFS2_DBG_MSG_PREFIX " dump space accounting for the eraseblock at %#08x:\n",
443 jeb->offset);
444
445 printk(JFFS2_DBG "used_size: %#08x\n", jeb->used_size);
446 printk(JFFS2_DBG "dirty_size: %#08x\n", jeb->dirty_size);
447 printk(JFFS2_DBG "wasted_size: %#08x\n", jeb->wasted_size);
448 printk(JFFS2_DBG "unchecked_size: %#08x\n", jeb->unchecked_size);
449 printk(JFFS2_DBG "free_size: %#08x\n", jeb->free_size);
450 }
451
452 void
453 __jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c)
454 {
455 spin_lock(&c->erase_completion_lock);
456 __jffs2_dbg_dump_block_lists_nolock(c);
457 spin_unlock(&c->erase_completion_lock);
458 }
459
460 void
461 __jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c)
462 {
463 printk(JFFS2_DBG_MSG_PREFIX " dump JFFS2 blocks lists:\n");
464
465 printk(JFFS2_DBG "flash_size: %#08x\n", c->flash_size);
466 printk(JFFS2_DBG "used_size: %#08x\n", c->used_size);
467 printk(JFFS2_DBG "dirty_size: %#08x\n", c->dirty_size);
468 printk(JFFS2_DBG "wasted_size: %#08x\n", c->wasted_size);
469 printk(JFFS2_DBG "unchecked_size: %#08x\n", c->unchecked_size);
470 printk(JFFS2_DBG "free_size: %#08x\n", c->free_size);
471 printk(JFFS2_DBG "erasing_size: %#08x\n", c->erasing_size);
472 printk(JFFS2_DBG "bad_size: %#08x\n", c->bad_size);
473 printk(JFFS2_DBG "sector_size: %#08x\n", c->sector_size);
474 printk(JFFS2_DBG "jffs2_reserved_blocks size: %#08x\n",
475 c->sector_size * c->resv_blocks_write);
476
477 if (c->nextblock)
478 printk(JFFS2_DBG "nextblock: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
479 c->nextblock->offset, c->nextblock->used_size,
480 c->nextblock->dirty_size, c->nextblock->wasted_size,
481 c->nextblock->unchecked_size, c->nextblock->free_size);
482 else
483 printk(JFFS2_DBG "nextblock: NULL\n");
484
485 if (c->gcblock)
486 printk(JFFS2_DBG "gcblock: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
487 c->gcblock->offset, c->gcblock->used_size, c->gcblock->dirty_size,
488 c->gcblock->wasted_size, c->gcblock->unchecked_size, c->gcblock->free_size);
489 else
490 printk(JFFS2_DBG "gcblock: NULL\n");
491
492 if (list_empty(&c->clean_list)) {
493 printk(JFFS2_DBG "clean_list: empty\n");
494 } else {
495 struct list_head *this;
496 int numblocks = 0;
497 uint32_t dirty = 0;
498
499 list_for_each(this, &c->clean_list) {
500 struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
501 numblocks ++;
502 dirty += jeb->wasted_size;
503 if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
504 printk(JFFS2_DBG "clean_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
505 jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
506 jeb->unchecked_size, jeb->free_size);
507 }
508 }
509
510 printk (JFFS2_DBG "Contains %d blocks with total wasted size %u, average wasted size: %u\n",
511 numblocks, dirty, dirty / numblocks);
512 }
513
514 if (list_empty(&c->very_dirty_list)) {
515 printk(JFFS2_DBG "very_dirty_list: empty\n");
516 } else {
517 struct list_head *this;
518 int numblocks = 0;
519 uint32_t dirty = 0;
520
521 list_for_each(this, &c->very_dirty_list) {
522 struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
523
524 numblocks ++;
525 dirty += jeb->dirty_size;
526 if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
527 printk(JFFS2_DBG "very_dirty_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
528 jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
529 jeb->unchecked_size, jeb->free_size);
530 }
531 }
532
533 printk (JFFS2_DBG "Contains %d blocks with total dirty size %u, average dirty size: %u\n",
534 numblocks, dirty, dirty / numblocks);
535 }
536
537 if (list_empty(&c->dirty_list)) {
538 printk(JFFS2_DBG "dirty_list: empty\n");
539 } else {
540 struct list_head *this;
541 int numblocks = 0;
542 uint32_t dirty = 0;
543
544 list_for_each(this, &c->dirty_list) {
545 struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
546
547 numblocks ++;
548 dirty += jeb->dirty_size;
549 if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
550 printk(JFFS2_DBG "dirty_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
551 jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
552 jeb->unchecked_size, jeb->free_size);
553 }
554 }
555
556 printk (JFFS2_DBG "contains %d blocks with total dirty size %u, average dirty size: %u\n",
557 numblocks, dirty, dirty / numblocks);
558 }
559
560 if (list_empty(&c->erasable_list)) {
561 printk(JFFS2_DBG "erasable_list: empty\n");
562 } else {
563 struct list_head *this;
564
565 list_for_each(this, &c->erasable_list) {
566 struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
567
568 if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
569 printk(JFFS2_DBG "erasable_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
570 jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
571 jeb->unchecked_size, jeb->free_size);
572 }
573 }
574 }
575
576 if (list_empty(&c->erasing_list)) {
577 printk(JFFS2_DBG "erasing_list: empty\n");
578 } else {
579 struct list_head *this;
580
581 list_for_each(this, &c->erasing_list) {
582 struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
583
584 if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
585 printk(JFFS2_DBG "erasing_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
586 jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
587 jeb->unchecked_size, jeb->free_size);
588 }
589 }
590 }
591 if (list_empty(&c->erase_checking_list)) {
592 printk(JFFS2_DBG "erase_checking_list: empty\n");
593 } else {
594 struct list_head *this;
595
596 list_for_each(this, &c->erase_checking_list) {
597 struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
598
599 if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
600 printk(JFFS2_DBG "erase_checking_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
601 jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
602 jeb->unchecked_size, jeb->free_size);
603 }
604 }
605 }
606
607 if (list_empty(&c->erase_pending_list)) {
608 printk(JFFS2_DBG "erase_pending_list: empty\n");
609 } else {
610 struct list_head *this;
611
612 list_for_each(this, &c->erase_pending_list) {
613 struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
614
615 if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
616 printk(JFFS2_DBG "erase_pending_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
617 jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
618 jeb->unchecked_size, jeb->free_size);
619 }
620 }
621 }
622
623 if (list_empty(&c->erasable_pending_wbuf_list)) {
624 printk(JFFS2_DBG "erasable_pending_wbuf_list: empty\n");
625 } else {
626 struct list_head *this;
627
628 list_for_each(this, &c->erasable_pending_wbuf_list) {
629 struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
630
631 if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
632 printk(JFFS2_DBG "erasable_pending_wbuf_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
633 jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
634 jeb->unchecked_size, jeb->free_size);
635 }
636 }
637 }
638
639 if (list_empty(&c->free_list)) {
640 printk(JFFS2_DBG "free_list: empty\n");
641 } else {
642 struct list_head *this;
643
644 list_for_each(this, &c->free_list) {
645 struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
646
647 if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
648 printk(JFFS2_DBG "free_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
649 jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
650 jeb->unchecked_size, jeb->free_size);
651 }
652 }
653 }
654
655 if (list_empty(&c->bad_list)) {
656 printk(JFFS2_DBG "bad_list: empty\n");
657 } else {
658 struct list_head *this;
659
660 list_for_each(this, &c->bad_list) {
661 struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
662
663 if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
664 printk(JFFS2_DBG "bad_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
665 jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
666 jeb->unchecked_size, jeb->free_size);
667 }
668 }
669 }
670
671 if (list_empty(&c->bad_used_list)) {
672 printk(JFFS2_DBG "bad_used_list: empty\n");
673 } else {
674 struct list_head *this;
675
676 list_for_each(this, &c->bad_used_list) {
677 struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list);
678
679 if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) {
680 printk(JFFS2_DBG "bad_used_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, unchecked %#08x, free %#08x)\n",
681 jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size,
682 jeb->unchecked_size, jeb->free_size);
683 }
684 }
685 }
686 }
687
688 void
689 __jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f)
690 {
691 mutex_lock(&f->sem);
692 jffs2_dbg_dump_fragtree_nolock(f);
693 mutex_unlock(&f->sem);
694 }
695
696 void
697 __jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f)
698 {
699 struct jffs2_node_frag *this = frag_first(&f->fragtree);
700 uint32_t lastofs = 0;
701 int buggy = 0;
702
703 printk(JFFS2_DBG_MSG_PREFIX " dump fragtree of ino #%u\n", f->inocache->ino);
704 while(this) {
705 if (this->node)
706 printk(JFFS2_DBG "frag %#04x-%#04x: %#08x(%d) on flash (*%p), left (%p), right (%p), parent (%p)\n",
707 this->ofs, this->ofs+this->size, ref_offset(this->node->raw),
708 ref_flags(this->node->raw), this, frag_left(this), frag_right(this),
709 frag_parent(this));
710 else
711 printk(JFFS2_DBG "frag %#04x-%#04x: hole (*%p). left (%p), right (%p), parent (%p)\n",
712 this->ofs, this->ofs+this->size, this, frag_left(this),
713 frag_right(this), frag_parent(this));
714 if (this->ofs != lastofs)
715 buggy = 1;
716 lastofs = this->ofs + this->size;
717 this = frag_next(this);
718 }
719
720 if (f->metadata)
721 printk(JFFS2_DBG "metadata at 0x%08x\n", ref_offset(f->metadata->raw));
722
723 if (buggy) {
724 JFFS2_ERROR("frag tree got a hole in it.\n");
725 BUG();
726 }
727 }
728
729 #define JFFS2_BUFDUMP_BYTES_PER_LINE 32
730 void
731 __jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs)
732 {
733 int skip;
734 int i;
735
736 printk(JFFS2_DBG_MSG_PREFIX " dump from offset %#08x to offset %#08x (%x bytes).\n",
737 offs, offs + len, len);
738 i = skip = offs % JFFS2_BUFDUMP_BYTES_PER_LINE;
739 offs = offs & ~(JFFS2_BUFDUMP_BYTES_PER_LINE - 1);
740
741 if (skip != 0)
742 printk(JFFS2_DBG "%#08x: ", offs);
743
744 while (skip--)
745 printk(" ");
746
747 while (i < len) {
748 if ((i % JFFS2_BUFDUMP_BYTES_PER_LINE) == 0 && i != len -1) {
749 if (i != 0)
750 printk("\n");
751 offs += JFFS2_BUFDUMP_BYTES_PER_LINE;
752 printk(JFFS2_DBG "%0#8x: ", offs);
753 }
754
755 printk("%02x ", buf[i]);
756
757 i += 1;
758 }
759
760 printk("\n");
761 }
762
763 /*
764 * Dump a JFFS2 node.
765 */
766 void
767 __jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs)
768 {
769 union jffs2_node_union node;
770 int len = sizeof(union jffs2_node_union);
771 size_t retlen;
772 uint32_t crc;
773 int ret;
774
775 printk(JFFS2_DBG_MSG_PREFIX " dump node at offset %#08x.\n", ofs);
776
777 ret = jffs2_flash_read(c, ofs, len, &retlen, (unsigned char *)&node);
778 if (ret || (retlen != len)) {
779 JFFS2_ERROR("read %d bytes failed or short. ret %d, retlen %zd.\n",
780 len, ret, retlen);
781 return;
782 }
783
784 printk(JFFS2_DBG "magic:\t%#04x\n", je16_to_cpu(node.u.magic));
785 printk(JFFS2_DBG "nodetype:\t%#04x\n", je16_to_cpu(node.u.nodetype));
786 printk(JFFS2_DBG "totlen:\t%#08x\n", je32_to_cpu(node.u.totlen));
787 printk(JFFS2_DBG "hdr_crc:\t%#08x\n", je32_to_cpu(node.u.hdr_crc));
788
789 crc = crc32(0, &node.u, sizeof(node.u) - 4);
790 if (crc != je32_to_cpu(node.u.hdr_crc)) {
791 JFFS2_ERROR("wrong common header CRC.\n");
792 return;
793 }
794
795 if (je16_to_cpu(node.u.magic) != JFFS2_MAGIC_BITMASK &&
796 je16_to_cpu(node.u.magic) != JFFS2_OLD_MAGIC_BITMASK)
797 {
798 JFFS2_ERROR("wrong node magic: %#04x instead of %#04x.\n",
799 je16_to_cpu(node.u.magic), JFFS2_MAGIC_BITMASK);
800 return;
801 }
802
803 switch(je16_to_cpu(node.u.nodetype)) {
804
805 case JFFS2_NODETYPE_INODE:
806
807 printk(JFFS2_DBG "the node is inode node\n");
808 printk(JFFS2_DBG "ino:\t%#08x\n", je32_to_cpu(node.i.ino));
809 printk(JFFS2_DBG "version:\t%#08x\n", je32_to_cpu(node.i.version));
810 printk(JFFS2_DBG "mode:\t%#08x\n", node.i.mode.m);
811 printk(JFFS2_DBG "uid:\t%#04x\n", je16_to_cpu(node.i.uid));
812 printk(JFFS2_DBG "gid:\t%#04x\n", je16_to_cpu(node.i.gid));
813 printk(JFFS2_DBG "isize:\t%#08x\n", je32_to_cpu(node.i.isize));
814 printk(JFFS2_DBG "atime:\t%#08x\n", je32_to_cpu(node.i.atime));
815 printk(JFFS2_DBG "mtime:\t%#08x\n", je32_to_cpu(node.i.mtime));
816 printk(JFFS2_DBG "ctime:\t%#08x\n", je32_to_cpu(node.i.ctime));
817 printk(JFFS2_DBG "offset:\t%#08x\n", je32_to_cpu(node.i.offset));
818 printk(JFFS2_DBG "csize:\t%#08x\n", je32_to_cpu(node.i.csize));
819 printk(JFFS2_DBG "dsize:\t%#08x\n", je32_to_cpu(node.i.dsize));
820 printk(JFFS2_DBG "compr:\t%#02x\n", node.i.compr);
821 printk(JFFS2_DBG "usercompr:\t%#02x\n", node.i.usercompr);
822 printk(JFFS2_DBG "flags:\t%#04x\n", je16_to_cpu(node.i.flags));
823 printk(JFFS2_DBG "data_crc:\t%#08x\n", je32_to_cpu(node.i.data_crc));
824 printk(JFFS2_DBG "node_crc:\t%#08x\n", je32_to_cpu(node.i.node_crc));
825
826 crc = crc32(0, &node.i, sizeof(node.i) - 8);
827 if (crc != je32_to_cpu(node.i.node_crc)) {
828 JFFS2_ERROR("wrong node header CRC.\n");
829 return;
830 }
831 break;
832
833 case JFFS2_NODETYPE_DIRENT:
834
835 printk(JFFS2_DBG "the node is dirent node\n");
836 printk(JFFS2_DBG "pino:\t%#08x\n", je32_to_cpu(node.d.pino));
837 printk(JFFS2_DBG "version:\t%#08x\n", je32_to_cpu(node.d.version));
838 printk(JFFS2_DBG "ino:\t%#08x\n", je32_to_cpu(node.d.ino));
839 printk(JFFS2_DBG "mctime:\t%#08x\n", je32_to_cpu(node.d.mctime));
840 printk(JFFS2_DBG "nsize:\t%#02x\n", node.d.nsize);
841 printk(JFFS2_DBG "type:\t%#02x\n", node.d.type);
842 printk(JFFS2_DBG "node_crc:\t%#08x\n", je32_to_cpu(node.d.node_crc));
843 printk(JFFS2_DBG "name_crc:\t%#08x\n", je32_to_cpu(node.d.name_crc));
844
845 node.d.name[node.d.nsize] = '\0';
846 printk(JFFS2_DBG "name:\t\"%s\"\n", node.d.name);
847
848 crc = crc32(0, &node.d, sizeof(node.d) - 8);
849 if (crc != je32_to_cpu(node.d.node_crc)) {
850 JFFS2_ERROR("wrong node header CRC.\n");
851 return;
852 }
853 break;
854
855 default:
856 printk(JFFS2_DBG "node type is unknown\n");
857 break;
858 }
859 }
860 #endif /* JFFS2_DBG_DUMPS || JFFS2_DBG_PARANOIA_CHECKS */