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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 | /* * This file is part of UBIFS. * * Copyright (C) 2006-2008 Nokia Corporation. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., 51 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * * Authors: Artem Bityutskiy (Битюцкий Артём) * Adrian Hunter */ #ifndef __UBIFS_DEBUG_H__ #define __UBIFS_DEBUG_H__ /* Checking helper functions */ typedef int (*dbg_leaf_callback)(struct ubifs_info *c, struct ubifs_zbranch *zbr, void *priv); typedef int (*dbg_znode_callback)(struct ubifs_info *c, struct ubifs_znode *znode, void *priv); /* * The UBIFS debugfs directory name pattern and maximum name length (3 for "ubi" * + 1 for "_" and plus 2x2 for 2 UBI numbers and 1 for the trailing zero byte. */ #define UBIFS_DFS_DIR_NAME "ubi%d_%d" #define UBIFS_DFS_DIR_LEN (3 + 1 + 2*2 + 1) /** * ubifs_debug_info - per-FS debugging information. * @old_zroot: old index root - used by 'dbg_check_old_index()' * @old_zroot_level: old index root level - used by 'dbg_check_old_index()' * @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()' * * @pc_happened: non-zero if an emulated power cut happened * @pc_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls * @pc_timeout: time in jiffies when delay of failure mode expires * @pc_cnt: current number of calls to failure mode I/O functions * @pc_cnt_max: number of calls by which to delay failure mode * * @chk_lpt_sz: used by LPT tree size checker * @chk_lpt_sz2: used by LPT tree size checker * @chk_lpt_wastage: used by LPT tree size checker * @chk_lpt_lebs: used by LPT tree size checker * @new_nhead_offs: used by LPT tree size checker * @new_ihead_lnum: used by debugging to check @c->ihead_lnum * @new_ihead_offs: used by debugging to check @c->ihead_offs * * @saved_lst: saved lprops statistics (used by 'dbg_save_space_info()') * @saved_bi: saved budgeting information * @saved_free: saved amount of free space * @saved_idx_gc_cnt: saved value of @c->idx_gc_cnt * * @chk_gen: if general extra checks are enabled * @chk_index: if index xtra checks are enabled * @chk_orph: if orphans extra checks are enabled * @chk_lprops: if lprops extra checks are enabled * @chk_fs: if UBIFS contents extra checks are enabled * @tst_rcvry: if UBIFS recovery testing mode enabled * * @dfs_dir_name: name of debugfs directory containing this file-system's files * @dfs_dir: direntry object of the file-system debugfs directory * @dfs_dump_lprops: "dump lprops" debugfs knob * @dfs_dump_budg: "dump budgeting information" debugfs knob * @dfs_dump_tnc: "dump TNC" debugfs knob * @dfs_chk_gen: debugfs knob to enable UBIFS general extra checks * @dfs_chk_index: debugfs knob to enable UBIFS index extra checks * @dfs_chk_orph: debugfs knob to enable UBIFS orphans extra checks * @dfs_chk_lprops: debugfs knob to enable UBIFS LEP properties extra checks * @dfs_chk_fs: debugfs knob to enable UBIFS contents extra checks * @dfs_tst_rcvry: debugfs knob to enable UBIFS recovery testing * @dfs_ro_error: debugfs knob to switch UBIFS to R/O mode (different to * re-mounting to R/O mode because it does not flush any buffers * and UBIFS just starts returning -EROFS on all write * operations) */ struct ubifs_debug_info { struct ubifs_zbranch old_zroot; int old_zroot_level; unsigned long long old_zroot_sqnum; int pc_happened; int pc_delay; unsigned long pc_timeout; unsigned int pc_cnt; unsigned int pc_cnt_max; long long chk_lpt_sz; long long chk_lpt_sz2; long long chk_lpt_wastage; int chk_lpt_lebs; int new_nhead_offs; int new_ihead_lnum; int new_ihead_offs; struct ubifs_lp_stats saved_lst; struct ubifs_budg_info saved_bi; long long saved_free; int saved_idx_gc_cnt; unsigned int chk_gen:1; unsigned int chk_index:1; unsigned int chk_orph:1; unsigned int chk_lprops:1; unsigned int chk_fs:1; unsigned int tst_rcvry:1; char dfs_dir_name[UBIFS_DFS_DIR_LEN + 1]; struct dentry *dfs_dir; struct dentry *dfs_dump_lprops; struct dentry *dfs_dump_budg; struct dentry *dfs_dump_tnc; struct dentry *dfs_chk_gen; struct dentry *dfs_chk_index; struct dentry *dfs_chk_orph; struct dentry *dfs_chk_lprops; struct dentry *dfs_chk_fs; struct dentry *dfs_tst_rcvry; struct dentry *dfs_ro_error; }; /** * ubifs_global_debug_info - global (not per-FS) UBIFS debugging information. * * @chk_gen: if general extra checks are enabled * @chk_index: if index xtra checks are enabled * @chk_orph: if orphans extra checks are enabled * @chk_lprops: if lprops extra checks are enabled * @chk_fs: if UBIFS contents extra checks are enabled * @tst_rcvry: if UBIFS recovery testing mode enabled */ struct ubifs_global_debug_info { unsigned int chk_gen:1; unsigned int chk_index:1; unsigned int chk_orph:1; unsigned int chk_lprops:1; unsigned int chk_fs:1; unsigned int tst_rcvry:1; }; void ubifs_assert_failed(struct ubifs_info *c, const char *expr, const char *file, int line); #define ubifs_assert(c, expr) do { \ if (unlikely(!(expr))) { \ ubifs_assert_failed((struct ubifs_info *)c, #expr, __FILE__, \ __LINE__); \ } \ } while (0) #define ubifs_assert_cmt_locked(c) do { \ if (unlikely(down_write_trylock(&(c)->commit_sem))) { \ up_write(&(c)->commit_sem); \ ubifs_err(c, "commit lock is not locked!\n"); \ ubifs_assert(c, 0); \ } \ } while (0) #define ubifs_dbg_msg(type, fmt, ...) \ pr_debug("UBIFS DBG " type " (pid %d): " fmt "\n", current->pid, \ ##__VA_ARGS__) #define DBG_KEY_BUF_LEN 48 #define ubifs_dbg_msg_key(type, key, fmt, ...) do { \ char __tmp_key_buf[DBG_KEY_BUF_LEN]; \ pr_debug("UBIFS DBG " type " (pid %d): " fmt "%s\n", current->pid, \ ##__VA_ARGS__, \ dbg_snprintf_key(c, key, __tmp_key_buf, DBG_KEY_BUF_LEN)); \ } while (0) /* General messages */ #define dbg_gen(fmt, ...) ubifs_dbg_msg("gen", fmt, ##__VA_ARGS__) /* Additional journal messages */ #define dbg_jnl(fmt, ...) ubifs_dbg_msg("jnl", fmt, ##__VA_ARGS__) #define dbg_jnlk(key, fmt, ...) \ ubifs_dbg_msg_key("jnl", key, fmt, ##__VA_ARGS__) /* Additional TNC messages */ #define dbg_tnc(fmt, ...) ubifs_dbg_msg("tnc", fmt, ##__VA_ARGS__) #define dbg_tnck(key, fmt, ...) \ ubifs_dbg_msg_key("tnc", key, fmt, ##__VA_ARGS__) /* Additional lprops messages */ #define dbg_lp(fmt, ...) ubifs_dbg_msg("lp", fmt, ##__VA_ARGS__) /* Additional LEB find messages */ #define dbg_find(fmt, ...) ubifs_dbg_msg("find", fmt, ##__VA_ARGS__) /* Additional mount messages */ #define dbg_mnt(fmt, ...) ubifs_dbg_msg("mnt", fmt, ##__VA_ARGS__) #define dbg_mntk(key, fmt, ...) \ ubifs_dbg_msg_key("mnt", key, fmt, ##__VA_ARGS__) /* Additional I/O messages */ #define dbg_io(fmt, ...) ubifs_dbg_msg("io", fmt, ##__VA_ARGS__) /* Additional commit messages */ #define dbg_cmt(fmt, ...) ubifs_dbg_msg("cmt", fmt, ##__VA_ARGS__) /* Additional budgeting messages */ #define dbg_budg(fmt, ...) ubifs_dbg_msg("budg", fmt, ##__VA_ARGS__) /* Additional log messages */ #define dbg_log(fmt, ...) ubifs_dbg_msg("log", fmt, ##__VA_ARGS__) /* Additional gc messages */ #define dbg_gc(fmt, ...) ubifs_dbg_msg("gc", fmt, ##__VA_ARGS__) /* Additional scan messages */ #define dbg_scan(fmt, ...) ubifs_dbg_msg("scan", fmt, ##__VA_ARGS__) /* Additional recovery messages */ #define dbg_rcvry(fmt, ...) ubifs_dbg_msg("rcvry", fmt, ##__VA_ARGS__) extern struct ubifs_global_debug_info ubifs_dbg; static inline int dbg_is_chk_gen(const struct ubifs_info *c) { return !!(ubifs_dbg.chk_gen || c->dbg->chk_gen); } static inline int dbg_is_chk_index(const struct ubifs_info *c) { return !!(ubifs_dbg.chk_index || c->dbg->chk_index); } static inline int dbg_is_chk_orph(const struct ubifs_info *c) { return !!(ubifs_dbg.chk_orph || c->dbg->chk_orph); } static inline int dbg_is_chk_lprops(const struct ubifs_info *c) { return !!(ubifs_dbg.chk_lprops || c->dbg->chk_lprops); } static inline int dbg_is_chk_fs(const struct ubifs_info *c) { return !!(ubifs_dbg.chk_fs || c->dbg->chk_fs); } static inline int dbg_is_tst_rcvry(const struct ubifs_info *c) { return !!(ubifs_dbg.tst_rcvry || c->dbg->tst_rcvry); } static inline int dbg_is_power_cut(const struct ubifs_info *c) { return !!c->dbg->pc_happened; } int ubifs_debugging_init(struct ubifs_info *c); void ubifs_debugging_exit(struct ubifs_info *c); /* Dump functions */ const char *dbg_ntype(int type); const char *dbg_cstate(int cmt_state); const char *dbg_jhead(int jhead); const char *dbg_get_key_dump(const struct ubifs_info *c, const union ubifs_key *key); const char *dbg_snprintf_key(const struct ubifs_info *c, const union ubifs_key *key, char *buffer, int len); void ubifs_dump_inode(struct ubifs_info *c, const struct inode *inode); void ubifs_dump_node(const struct ubifs_info *c, const void *node); void ubifs_dump_budget_req(const struct ubifs_budget_req *req); void ubifs_dump_lstats(const struct ubifs_lp_stats *lst); void ubifs_dump_budg(struct ubifs_info *c, const struct ubifs_budg_info *bi); void ubifs_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp); void ubifs_dump_lprops(struct ubifs_info *c); void ubifs_dump_lpt_info(struct ubifs_info *c); void ubifs_dump_leb(const struct ubifs_info *c, int lnum); void ubifs_dump_sleb(const struct ubifs_info *c, const struct ubifs_scan_leb *sleb, int offs); void ubifs_dump_znode(const struct ubifs_info *c, const struct ubifs_znode *znode); void ubifs_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat); void ubifs_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, struct ubifs_nnode *parent, int iip); void ubifs_dump_tnc(struct ubifs_info *c); void ubifs_dump_index(struct ubifs_info *c); void ubifs_dump_lpt_lebs(const struct ubifs_info *c); int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb, dbg_znode_callback znode_cb, void *priv); /* Checking functions */ void dbg_save_space_info(struct ubifs_info *c); int dbg_check_space_info(struct ubifs_info *c); int dbg_check_lprops(struct ubifs_info *c); int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot); int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot); int dbg_check_cats(struct ubifs_info *c); int dbg_check_ltab(struct ubifs_info *c); int dbg_chk_lpt_free_spc(struct ubifs_info *c); int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len); int dbg_check_synced_i_size(const struct ubifs_info *c, struct inode *inode); int dbg_check_dir(struct ubifs_info *c, const struct inode *dir); int dbg_check_tnc(struct ubifs_info *c, int extra); int dbg_check_idx_size(struct ubifs_info *c, long long idx_size); int dbg_check_filesystem(struct ubifs_info *c); void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat, int add_pos); int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode, int row, int col); int dbg_check_inode_size(struct ubifs_info *c, const struct inode *inode, loff_t size); int dbg_check_data_nodes_order(struct ubifs_info *c, struct list_head *head); int dbg_check_nondata_nodes_order(struct ubifs_info *c, struct list_head *head); int dbg_leb_write(struct ubifs_info *c, int lnum, const void *buf, int offs, int len); int dbg_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len); int dbg_leb_unmap(struct ubifs_info *c, int lnum); int dbg_leb_map(struct ubifs_info *c, int lnum); /* Debugfs-related stuff */ int dbg_debugfs_init(void); void dbg_debugfs_exit(void); int dbg_debugfs_init_fs(struct ubifs_info *c); void dbg_debugfs_exit_fs(struct ubifs_info *c); #endif /* !__UBIFS_DEBUG_H__ */ |