2 * This file is part of UBIFS.
4 * Copyright (C) 2006-2008 Nokia Corporation.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published by
8 * the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along with
16 * this program; if not, write to the Free Software Foundation, Inc., 51
17 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Authors: Artem Bityutskiy (Битюцкий Артём)
23 #ifndef __UBIFS_DEBUG_H__
24 #define __UBIFS_DEBUG_H__
26 #ifdef CONFIG_UBIFS_FS_DEBUG
29 * ubifs_debug_info - per-FS debugging information.
30 * @buf: a buffer of LEB size, used for various purposes
31 * @old_zroot: old index root - used by 'dbg_check_old_index()'
32 * @old_zroot_level: old index root level - used by 'dbg_check_old_index()'
33 * @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()'
34 * @failure_mode: failure mode for recovery testing
35 * @fail_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls
36 * @fail_timeout: time in jiffies when delay of failure mode expires
37 * @fail_cnt: current number of calls to failure mode I/O functions
38 * @fail_cnt_max: number of calls by which to delay failure mode
39 * @chk_lpt_sz: used by LPT tree size checker
40 * @chk_lpt_sz2: used by LPT tree size checker
41 * @chk_lpt_wastage: used by LPT tree size checker
42 * @chk_lpt_lebs: used by LPT tree size checker
43 * @new_nhead_offs: used by LPT tree size checker
44 * @new_ihead_lnum: used by debugging to check ihead_lnum
45 * @new_ihead_offs: used by debugging to check ihead_offs
47 * debugfs_dir_name: name of debugfs directory containing this file-system's
49 * debugfs_dir: direntry object of the file-system debugfs directory
50 * dump_lprops: "dump lprops" debugfs knob
51 * dump_budg: "dump budgeting information" debugfs knob
52 * dump_tnc: "dump TNC" debugfs knob
54 struct ubifs_debug_info {
56 struct ubifs_zbranch old_zroot;
58 unsigned long long old_zroot_sqnum;
61 unsigned long fail_timeout;
62 unsigned int fail_cnt;
63 unsigned int fail_cnt_max;
65 long long chk_lpt_sz2;
66 long long chk_lpt_wastage;
72 char debugfs_dir_name[100];
73 struct dentry *debugfs_dir;
74 struct dentry *dump_lprops;
75 struct dentry *dump_budg;
76 struct dentry *dump_tnc;
79 #define ubifs_assert(expr) do { \
80 if (unlikely(!(expr))) { \
81 printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
82 __func__, __LINE__, current->pid); \
87 #define ubifs_assert_cmt_locked(c) do { \
88 if (unlikely(down_write_trylock(&(c)->commit_sem))) { \
89 up_write(&(c)->commit_sem); \
90 printk(KERN_CRIT "commit lock is not locked!\n"); \
95 #define dbg_dump_stack() do { \
96 if (!dbg_failure_mode) \
100 /* Generic debugging messages */
101 #define dbg_msg(fmt, ...) do { \
102 spin_lock(&dbg_lock); \
103 printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", current->pid, \
104 __func__, ##__VA_ARGS__); \
105 spin_unlock(&dbg_lock); \
108 #define dbg_do_msg(typ, fmt, ...) do { \
109 if (ubifs_msg_flags & typ) \
110 dbg_msg(fmt, ##__VA_ARGS__); \
113 #define dbg_err(fmt, ...) do { \
114 spin_lock(&dbg_lock); \
115 ubifs_err(fmt, ##__VA_ARGS__); \
116 spin_unlock(&dbg_lock); \
119 const char *dbg_key_str0(const struct ubifs_info *c,
120 const union ubifs_key *key);
121 const char *dbg_key_str1(const struct ubifs_info *c,
122 const union ubifs_key *key);
125 * DBGKEY macros require @dbg_lock to be held, which it is in the dbg message
128 #define DBGKEY(key) dbg_key_str0(c, (key))
129 #define DBGKEY1(key) dbg_key_str1(c, (key))
131 /* General messages */
132 #define dbg_gen(fmt, ...) dbg_do_msg(UBIFS_MSG_GEN, fmt, ##__VA_ARGS__)
134 /* Additional journal messages */
135 #define dbg_jnl(fmt, ...) dbg_do_msg(UBIFS_MSG_JNL, fmt, ##__VA_ARGS__)
137 /* Additional TNC messages */
138 #define dbg_tnc(fmt, ...) dbg_do_msg(UBIFS_MSG_TNC, fmt, ##__VA_ARGS__)
140 /* Additional lprops messages */
141 #define dbg_lp(fmt, ...) dbg_do_msg(UBIFS_MSG_LP, fmt, ##__VA_ARGS__)
143 /* Additional LEB find messages */
144 #define dbg_find(fmt, ...) dbg_do_msg(UBIFS_MSG_FIND, fmt, ##__VA_ARGS__)
146 /* Additional mount messages */
147 #define dbg_mnt(fmt, ...) dbg_do_msg(UBIFS_MSG_MNT, fmt, ##__VA_ARGS__)
149 /* Additional I/O messages */
150 #define dbg_io(fmt, ...) dbg_do_msg(UBIFS_MSG_IO, fmt, ##__VA_ARGS__)
152 /* Additional commit messages */
153 #define dbg_cmt(fmt, ...) dbg_do_msg(UBIFS_MSG_CMT, fmt, ##__VA_ARGS__)
155 /* Additional budgeting messages */
156 #define dbg_budg(fmt, ...) dbg_do_msg(UBIFS_MSG_BUDG, fmt, ##__VA_ARGS__)
158 /* Additional log messages */
159 #define dbg_log(fmt, ...) dbg_do_msg(UBIFS_MSG_LOG, fmt, ##__VA_ARGS__)
161 /* Additional gc messages */
162 #define dbg_gc(fmt, ...) dbg_do_msg(UBIFS_MSG_GC, fmt, ##__VA_ARGS__)
164 /* Additional scan messages */
165 #define dbg_scan(fmt, ...) dbg_do_msg(UBIFS_MSG_SCAN, fmt, ##__VA_ARGS__)
167 /* Additional recovery messages */
168 #define dbg_rcvry(fmt, ...) dbg_do_msg(UBIFS_MSG_RCVRY, fmt, ##__VA_ARGS__)
171 * Debugging message type flags (must match msg_type_names in debug.c).
173 * UBIFS_MSG_GEN: general messages
174 * UBIFS_MSG_JNL: journal messages
175 * UBIFS_MSG_MNT: mount messages
176 * UBIFS_MSG_CMT: commit messages
177 * UBIFS_MSG_FIND: LEB find messages
178 * UBIFS_MSG_BUDG: budgeting messages
179 * UBIFS_MSG_GC: garbage collection messages
180 * UBIFS_MSG_TNC: TNC messages
181 * UBIFS_MSG_LP: lprops messages
182 * UBIFS_MSG_IO: I/O messages
183 * UBIFS_MSG_LOG: log messages
184 * UBIFS_MSG_SCAN: scan messages
185 * UBIFS_MSG_RCVRY: recovery messages
192 UBIFS_MSG_FIND = 0x10,
193 UBIFS_MSG_BUDG = 0x20,
195 UBIFS_MSG_TNC = 0x80,
196 UBIFS_MSG_LP = 0x100,
197 UBIFS_MSG_IO = 0x200,
198 UBIFS_MSG_LOG = 0x400,
199 UBIFS_MSG_SCAN = 0x800,
200 UBIFS_MSG_RCVRY = 0x1000,
203 /* Debugging message type flags for each default debug message level */
204 #define UBIFS_MSG_LVL_0 0
205 #define UBIFS_MSG_LVL_1 0x1
206 #define UBIFS_MSG_LVL_2 0x7f
207 #define UBIFS_MSG_LVL_3 0xffff
210 * Debugging check flags (must match chk_names in debug.c).
212 * UBIFS_CHK_GEN: general checks
213 * UBIFS_CHK_TNC: check TNC
214 * UBIFS_CHK_IDX_SZ: check index size
215 * UBIFS_CHK_ORPH: check orphans
216 * UBIFS_CHK_OLD_IDX: check the old index
217 * UBIFS_CHK_LPROPS: check lprops
218 * UBIFS_CHK_FS: check the file-system
223 UBIFS_CHK_IDX_SZ = 0x4,
224 UBIFS_CHK_ORPH = 0x8,
225 UBIFS_CHK_OLD_IDX = 0x10,
226 UBIFS_CHK_LPROPS = 0x20,
231 * Special testing flags (must match tst_names in debug.c).
233 * UBIFS_TST_FORCE_IN_THE_GAPS: force the use of in-the-gaps method
234 * UBIFS_TST_RCVRY: failure mode for recovery testing
237 UBIFS_TST_FORCE_IN_THE_GAPS = 0x2,
238 UBIFS_TST_RCVRY = 0x4,
241 #if CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 1
242 #define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_1
243 #elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 2
244 #define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_2
245 #elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 3
246 #define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_3
248 #define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_0
251 #ifdef CONFIG_UBIFS_FS_DEBUG_CHKS
252 #define UBIFS_CHK_FLAGS_DEFAULT 0xffffffff
254 #define UBIFS_CHK_FLAGS_DEFAULT 0
257 extern spinlock_t dbg_lock;
259 extern unsigned int ubifs_msg_flags;
260 extern unsigned int ubifs_chk_flags;
261 extern unsigned int ubifs_tst_flags;
263 int ubifs_debugging_init(struct ubifs_info *c);
264 void ubifs_debugging_exit(struct ubifs_info *c);
267 const char *dbg_ntype(int type);
268 const char *dbg_cstate(int cmt_state);
269 const char *dbg_get_key_dump(const struct ubifs_info *c,
270 const union ubifs_key *key);
271 void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode);
272 void dbg_dump_node(const struct ubifs_info *c, const void *node);
273 void dbg_dump_lpt_node(const struct ubifs_info *c, void *node, int lnum,
275 void dbg_dump_budget_req(const struct ubifs_budget_req *req);
276 void dbg_dump_lstats(const struct ubifs_lp_stats *lst);
277 void dbg_dump_budg(struct ubifs_info *c);
278 void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp);
279 void dbg_dump_lprops(struct ubifs_info *c);
280 void dbg_dump_lpt_info(struct ubifs_info *c);
281 void dbg_dump_leb(const struct ubifs_info *c, int lnum);
282 void dbg_dump_znode(const struct ubifs_info *c,
283 const struct ubifs_znode *znode);
284 void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat);
285 void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode,
286 struct ubifs_nnode *parent, int iip);
287 void dbg_dump_tnc(struct ubifs_info *c);
288 void dbg_dump_index(struct ubifs_info *c);
289 void dbg_dump_lpt_lebs(const struct ubifs_info *c);
291 /* Checking helper functions */
292 typedef int (*dbg_leaf_callback)(struct ubifs_info *c,
293 struct ubifs_zbranch *zbr, void *priv);
294 typedef int (*dbg_znode_callback)(struct ubifs_info *c,
295 struct ubifs_znode *znode, void *priv);
296 int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb,
297 dbg_znode_callback znode_cb, void *priv);
299 /* Checking functions */
301 int dbg_check_lprops(struct ubifs_info *c);
302 int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot);
303 int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot);
304 int dbg_check_cats(struct ubifs_info *c);
305 int dbg_check_ltab(struct ubifs_info *c);
306 int dbg_chk_lpt_free_spc(struct ubifs_info *c);
307 int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len);
308 int dbg_check_synced_i_size(struct inode *inode);
309 int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir);
310 int dbg_check_tnc(struct ubifs_info *c, int extra);
311 int dbg_check_idx_size(struct ubifs_info *c, long long idx_size);
312 int dbg_check_filesystem(struct ubifs_info *c);
313 void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat,
315 int dbg_check_lprops(struct ubifs_info *c);
316 int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode,
319 /* Force the use of in-the-gaps method for testing */
321 #define dbg_force_in_the_gaps_enabled \
322 (ubifs_tst_flags & UBIFS_TST_FORCE_IN_THE_GAPS)
324 int dbg_force_in_the_gaps(void);
326 /* Failure mode for recovery testing */
328 #define dbg_failure_mode (ubifs_tst_flags & UBIFS_TST_RCVRY)
330 #ifndef UBIFS_DBG_PRESERVE_UBI
332 #define ubi_leb_read dbg_leb_read
333 #define ubi_leb_write dbg_leb_write
334 #define ubi_leb_change dbg_leb_change
335 #define ubi_leb_erase dbg_leb_erase
336 #define ubi_leb_unmap dbg_leb_unmap
337 #define ubi_is_mapped dbg_is_mapped
338 #define ubi_leb_map dbg_leb_map
342 int dbg_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
344 int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
345 int offset, int len, int dtype);
346 int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
348 int dbg_leb_erase(struct ubi_volume_desc *desc, int lnum);
349 int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum);
350 int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum);
351 int dbg_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype);
353 static inline int dbg_read(struct ubi_volume_desc *desc, int lnum, char *buf,
356 return dbg_leb_read(desc, lnum, buf, offset, len, 0);
359 static inline int dbg_write(struct ubi_volume_desc *desc, int lnum,
360 const void *buf, int offset, int len)
362 return dbg_leb_write(desc, lnum, buf, offset, len, UBI_UNKNOWN);
365 static inline int dbg_change(struct ubi_volume_desc *desc, int lnum,
366 const void *buf, int len)
368 return dbg_leb_change(desc, lnum, buf, len, UBI_UNKNOWN);
371 /* Debugfs-related stuff */
372 int dbg_debugfs_init(void);
373 void dbg_debugfs_exit(void);
374 int dbg_debugfs_init_fs(struct ubifs_info *c);
375 void dbg_debugfs_exit_fs(struct ubifs_info *c);
377 #else /* !CONFIG_UBIFS_FS_DEBUG */
379 /* Use "if (0)" to make compiler check arguments even if debugging is off */
380 #define ubifs_assert(expr) do { \
382 printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \
383 __func__, __LINE__, current->pid); \
386 #define dbg_err(fmt, ...) do { \
388 ubifs_err(fmt, ##__VA_ARGS__); \
391 #define dbg_msg(fmt, ...) do { \
393 printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", \
394 current->pid, __func__, ##__VA_ARGS__); \
397 #define dbg_dump_stack()
398 #define ubifs_assert_cmt_locked(c)
400 #define dbg_gen(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
401 #define dbg_jnl(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
402 #define dbg_tnc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
403 #define dbg_lp(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
404 #define dbg_find(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
405 #define dbg_mnt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
406 #define dbg_io(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
407 #define dbg_cmt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
408 #define dbg_budg(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
409 #define dbg_log(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
410 #define dbg_gc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
411 #define dbg_scan(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
412 #define dbg_rcvry(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
414 #define DBGKEY(key) ((char *)(key))
415 #define DBGKEY1(key) ((char *)(key))
417 #define ubifs_debugging_init(c) 0
418 #define ubifs_debugging_exit(c) ({})
420 #define dbg_ntype(type) ""
421 #define dbg_cstate(cmt_state) ""
422 #define dbg_get_key_dump(c, key) ({})
423 #define dbg_dump_inode(c, inode) ({})
424 #define dbg_dump_node(c, node) ({})
425 #define dbg_dump_lpt_node(c, node, lnum, offs) ({})
426 #define dbg_dump_budget_req(req) ({})
427 #define dbg_dump_lstats(lst) ({})
428 #define dbg_dump_budg(c) ({})
429 #define dbg_dump_lprop(c, lp) ({})
430 #define dbg_dump_lprops(c) ({})
431 #define dbg_dump_lpt_info(c) ({})
432 #define dbg_dump_leb(c, lnum) ({})
433 #define dbg_dump_znode(c, znode) ({})
434 #define dbg_dump_heap(c, heap, cat) ({})
435 #define dbg_dump_pnode(c, pnode, parent, iip) ({})
436 #define dbg_dump_tnc(c) ({})
437 #define dbg_dump_index(c) ({})
438 #define dbg_dump_lpt_lebs(c) ({})
440 #define dbg_walk_index(c, leaf_cb, znode_cb, priv) 0
441 #define dbg_old_index_check_init(c, zroot) 0
442 #define dbg_check_old_index(c, zroot) 0
443 #define dbg_check_cats(c) 0
444 #define dbg_check_ltab(c) 0
445 #define dbg_chk_lpt_free_spc(c) 0
446 #define dbg_chk_lpt_sz(c, action, len) 0
447 #define dbg_check_synced_i_size(inode) 0
448 #define dbg_check_dir_size(c, dir) 0
449 #define dbg_check_tnc(c, x) 0
450 #define dbg_check_idx_size(c, idx_size) 0
451 #define dbg_check_filesystem(c) 0
452 #define dbg_check_heap(c, heap, cat, add_pos) ({})
453 #define dbg_check_lprops(c) 0
454 #define dbg_check_lpt_nodes(c, cnode, row, col) 0
455 #define dbg_force_in_the_gaps_enabled 0
456 #define dbg_force_in_the_gaps() 0
457 #define dbg_failure_mode 0
459 #define dbg_debugfs_init() 0
460 #define dbg_debugfs_exit()
461 #define dbg_debugfs_init_fs(c) 0
462 #define dbg_debugfs_exit_fs(c) 0
464 #endif /* !CONFIG_UBIFS_FS_DEBUG */
465 #endif /* !__UBIFS_DEBUG_H__ */