fs/jffs2/debug.h

   1 /*
   2  * JFFS2 -- Journalling Flash File System, Version 2.
   3  *
   4  * Copyright © 2001-2007 Red Hat, Inc.
   5  *
   6  * Created by David Woodhouse <dwmw2@infradead.org>
   7  *
   8  * For licensing information, see the file 'LICENCE' in this directory.
   9  *
  10  */
  11
  12 #ifndef _JFFS2_DEBUG_H_
  13 #define _JFFS2_DEBUG_H_
  14
  15 #include <linux/sched.h>
  16
  17 #ifndef CONFIG_JFFS2_FS_DEBUG
  18 #define CONFIG_JFFS2_FS_DEBUG 0
  19 #endif
  20
  21 #if CONFIG_JFFS2_FS_DEBUG > 0
  22 /* Enable "paranoia" checks and dumps */
  23 #define JFFS2_DBG_PARANOIA_CHECKS
  24 #define JFFS2_DBG_DUMPS
  25
  26 /*
  27  * By defining/undefining the below macros one may select debugging messages
  28  * fro specific JFFS2 subsystems.
  29  */
  30 #define JFFS2_DBG_READINODE_MESSAGES
  31 #define JFFS2_DBG_FRAGTREE_MESSAGES
  32 #define JFFS2_DBG_DENTLIST_MESSAGES
  33 #define JFFS2_DBG_NODEREF_MESSAGES
  34 #define JFFS2_DBG_INOCACHE_MESSAGES
  35 #define JFFS2_DBG_SUMMARY_MESSAGES
  36 #define JFFS2_DBG_FSBUILD_MESSAGES
  37 #endif
  38
  39 #if CONFIG_JFFS2_FS_DEBUG > 1
  40 #define JFFS2_DBG_FRAGTREE2_MESSAGES
  41 #define JFFS2_DBG_MEMALLOC_MESSAGES
  42 #endif
  43
  44 /* Sanity checks are supposed to be light-weight and enabled by default */
  45 #define JFFS2_DBG_SANITY_CHECKS
  46
  47 /*
  48  * Dx() are mainly used for debugging messages, they must go away and be
  49  * superseded by nicer dbg_xxx() macros...
  50  */
  51 #if CONFIG_JFFS2_FS_DEBUG > 0
  52 #define D1(x) x
  53 #else
  54 #define D1(x)
  55 #endif
  56
  57 #if CONFIG_JFFS2_FS_DEBUG > 1
  58 #define D2(x) x
  59 #else
  60 #define D2(x)
  61 #endif
  62
  63 /* The prefixes of JFFS2 messages */
  64 #define JFFS2_DBG_PREFIX        "[JFFS2 DBG]"
  65 #define JFFS2_ERR_PREFIX        "JFFS2 error:"
  66 #define JFFS2_WARN_PREFIX       "JFFS2 warning:"
  67 #define JFFS2_NOTICE_PREFIX     "JFFS2 notice:"
  68
  69 #define JFFS2_ERR       KERN_ERR
  70 #define JFFS2_WARN      KERN_WARNING
  71 #define JFFS2_NOT       KERN_NOTICE
  72 #define JFFS2_DBG       KERN_DEBUG
  73
  74 #define JFFS2_DBG_MSG_PREFIX    JFFS2_DBG JFFS2_DBG_PREFIX
  75 #define JFFS2_ERR_MSG_PREFIX    JFFS2_ERR JFFS2_ERR_PREFIX
  76 #define JFFS2_WARN_MSG_PREFIX   JFFS2_WARN JFFS2_WARN_PREFIX
  77 #define JFFS2_NOTICE_MSG_PREFIX JFFS2_NOT JFFS2_NOTICE_PREFIX
  78
  79 /* JFFS2 message macros */
  80 #define JFFS2_ERROR(fmt, ...)                                           \
  81         do {                                                            \
  82                 printk(JFFS2_ERR_MSG_PREFIX                             \
  83                         " (%d) %s: " fmt, task_pid_nr(current),         \
  84                         __FUNCTION__ , ##__VA_ARGS__);                  \
  85         } while(0)
  86
  87 #define JFFS2_WARNING(fmt, ...)                                         \
  88         do {                                                            \
  89                 printk(JFFS2_WARN_MSG_PREFIX                            \
  90                         " (%d) %s: " fmt, task_pid_nr(current),         \
  91                         __FUNCTION__ , ##__VA_ARGS__);                  \
  92         } while(0)
  93
  94 #define JFFS2_NOTICE(fmt, ...)                                          \
  95         do {                                                            \
  96                 printk(JFFS2_NOTICE_MSG_PREFIX                          \
  97                         " (%d) %s: " fmt, task_pid_nr(current),         \
  98                         __FUNCTION__ , ##__VA_ARGS__);                  \
  99         } while(0)
 100
 101 #define JFFS2_DEBUG(fmt, ...)                                           \
 102         do {                                                            \
 103                 printk(JFFS2_DBG_MSG_PREFIX                             \
 104                         " (%d) %s: " fmt, task_pid_nr(current),         \
 105                         __FUNCTION__ , ##__VA_ARGS__);                  \
 106         } while(0)
 107
 108 /*
 109  * We split our debugging messages on several parts, depending on the JFFS2
 110  * subsystem the message belongs to.
 111  */
 112 /* Read inode debugging messages */
 113 #ifdef JFFS2_DBG_READINODE_MESSAGES
 114 #define dbg_readinode(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 115 #else
 116 #define dbg_readinode(fmt, ...)
 117 #endif
 118
 119 /* Fragtree build debugging messages */
 120 #ifdef JFFS2_DBG_FRAGTREE_MESSAGES
 121 #define dbg_fragtree(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 122 #else
 123 #define dbg_fragtree(fmt, ...)
 124 #endif
 125 #ifdef JFFS2_DBG_FRAGTREE2_MESSAGES
 126 #define dbg_fragtree2(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 127 #else
 128 #define dbg_fragtree2(fmt, ...)
 129 #endif
 130
 131 /* Directory entry list manilulation debugging messages */
 132 #ifdef JFFS2_DBG_DENTLIST_MESSAGES
 133 #define dbg_dentlist(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 134 #else
 135 #define dbg_dentlist(fmt, ...)
 136 #endif
 137
 138 /* Print the messages about manipulating node_refs */
 139 #ifdef JFFS2_DBG_NODEREF_MESSAGES
 140 #define dbg_noderef(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 141 #else
 142 #define dbg_noderef(fmt, ...)
 143 #endif
 144
 145 /* Manipulations with the list of inodes (JFFS2 inocache) */
 146 #ifdef JFFS2_DBG_INOCACHE_MESSAGES
 147 #define dbg_inocache(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 148 #else
 149 #define dbg_inocache(fmt, ...)
 150 #endif
 151
 152 /* Summary debugging messages */
 153 #ifdef JFFS2_DBG_SUMMARY_MESSAGES
 154 #define dbg_summary(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 155 #else
 156 #define dbg_summary(fmt, ...)
 157 #endif
 158
 159 /* File system build messages */
 160 #ifdef JFFS2_DBG_FSBUILD_MESSAGES
 161 #define dbg_fsbuild(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 162 #else
 163 #define dbg_fsbuild(fmt, ...)
 164 #endif
 165
 166 /* Watch the object allocations */
 167 #ifdef JFFS2_DBG_MEMALLOC_MESSAGES
 168 #define dbg_memalloc(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 169 #else
 170 #define dbg_memalloc(fmt, ...)
 171 #endif
 172
 173 /* Watch the XATTR subsystem */
 174 #ifdef JFFS2_DBG_XATTR_MESSAGES
 175 #define dbg_xattr(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 176 #else
 177 #define dbg_xattr(fmt, ...)
 178 #endif
 179
 180 /* "Sanity" checks */
 181 void
 182 __jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
 183                                      struct jffs2_eraseblock *jeb);
 184 void
 185 __jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
 186                               struct jffs2_eraseblock *jeb);
 187
 188 /* "Paranoia" checks */
 189 void
 190 __jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
 191 void
 192 __jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f);
 193 void
 194 __jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
 195                                 struct jffs2_eraseblock *jeb);
 196 void
 197 __jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
 198                                        struct jffs2_eraseblock *jeb);
 199 void
 200 __jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
 201                                     uint32_t ofs, int len);
 202
 203 /* "Dump" functions */
 204 void
 205 __jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
 206 void
 207 __jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb);
 208 void
 209 __jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
 210 void
 211 __jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c);
 212 void
 213 __jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,
 214                            struct jffs2_eraseblock *jeb);
 215 void
 216 __jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
 217                                   struct jffs2_eraseblock *jeb);
 218 void
 219 __jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
 220 void
 221 __jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f);
 222 void
 223 __jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs);
 224 void
 225 __jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs);
 226
 227 #ifdef JFFS2_DBG_PARANOIA_CHECKS
 228 #define jffs2_dbg_fragtree_paranoia_check(f)                    \
 229         __jffs2_dbg_fragtree_paranoia_check(f)
 230 #define jffs2_dbg_fragtree_paranoia_check_nolock(f)             \
 231         __jffs2_dbg_fragtree_paranoia_check_nolock(f)
 232 #define jffs2_dbg_acct_paranoia_check(c, jeb)                   \
 233         __jffs2_dbg_acct_paranoia_check(c,jeb)
 234 #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)            \
 235         __jffs2_dbg_acct_paranoia_check_nolock(c,jeb)
 236 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)          \
 237         __jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
 238 #else
 239 #define jffs2_dbg_fragtree_paranoia_check(f)
 240 #define jffs2_dbg_fragtree_paranoia_check_nolock(f)
 241 #define jffs2_dbg_acct_paranoia_check(c, jeb)
 242 #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)
 243 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
 244 #endif /* !JFFS2_PARANOIA_CHECKS */
 245
 246 #ifdef JFFS2_DBG_DUMPS
 247 #define jffs2_dbg_dump_jeb(c, jeb)                              \
 248         __jffs2_dbg_dump_jeb(c, jeb);
 249 #define jffs2_dbg_dump_jeb_nolock(jeb)                          \
 250         __jffs2_dbg_dump_jeb_nolock(jeb);
 251 #define jffs2_dbg_dump_block_lists(c)                           \
 252         __jffs2_dbg_dump_block_lists(c)
 253 #define jffs2_dbg_dump_block_lists_nolock(c)                    \
 254         __jffs2_dbg_dump_block_lists_nolock(c)
 255 #define jffs2_dbg_dump_fragtree(f)                              \
 256         __jffs2_dbg_dump_fragtree(f);
 257 #define jffs2_dbg_dump_fragtree_nolock(f)                       \
 258         __jffs2_dbg_dump_fragtree_nolock(f);
 259 #define jffs2_dbg_dump_buffer(buf, len, offs)                   \
 260         __jffs2_dbg_dump_buffer(*buf, len, offs);
 261 #define jffs2_dbg_dump_node(c, ofs)                             \
 262         __jffs2_dbg_dump_node(c, ofs);
 263 #else
 264 #define jffs2_dbg_dump_jeb(c, jeb)
 265 #define jffs2_dbg_dump_jeb_nolock(jeb)
 266 #define jffs2_dbg_dump_block_lists(c)
 267 #define jffs2_dbg_dump_block_lists_nolock(c)
 268 #define jffs2_dbg_dump_fragtree(f)
 269 #define jffs2_dbg_dump_fragtree_nolock(f)
 270 #define jffs2_dbg_dump_buffer(buf, len, offs)
 271 #define jffs2_dbg_dump_node(c, ofs)
 272 #endif /* !JFFS2_DBG_DUMPS */
 273
 274 #ifdef JFFS2_DBG_SANITY_CHECKS
 275 #define jffs2_dbg_acct_sanity_check(c, jeb)                     \
 276         __jffs2_dbg_acct_sanity_check(c, jeb)
 277 #define jffs2_dbg_acct_sanity_check_nolock(c, jeb)              \
 278         __jffs2_dbg_acct_sanity_check_nolock(c, jeb)
 279 #else
 280 #define jffs2_dbg_acct_sanity_check(c, jeb)
 281 #define jffs2_dbg_acct_sanity_check_nolock(c, jeb)
 282 #endif /* !JFFS2_DBG_SANITY_CHECKS */
 283
 284 #endif /* _JFFS2_DEBUG_H_ */