fs/jffs2/debug.h

   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 #ifndef _JFFS2_DEBUG_H_
  14 #define _JFFS2_DEBUG_H_
  15
  16 #include <linux/sched.h>
  17
  18 #ifndef CONFIG_JFFS2_FS_DEBUG
  19 #define CONFIG_JFFS2_FS_DEBUG 0
  20 #endif
  21
  22 #if CONFIG_JFFS2_FS_DEBUG > 0
  23 /* Enable "paranoia" checks and dumps */
  24 #define JFFS2_DBG_PARANOIA_CHECKS
  25 #define JFFS2_DBG_DUMPS
  26
  27 /*
  28  * By defining/undefining the below macros one may select debugging messages
  29  * fro specific JFFS2 subsystems.
  30  */
  31 #define JFFS2_DBG_READINODE_MESSAGES
  32 #define JFFS2_DBG_FRAGTREE_MESSAGES
  33 #define JFFS2_DBG_DENTLIST_MESSAGES
  34 #define JFFS2_DBG_NODEREF_MESSAGES
  35 #define JFFS2_DBG_INOCACHE_MESSAGES
  36 #define JFFS2_DBG_SUMMARY_MESSAGES
  37 #define JFFS2_DBG_FSBUILD_MESSAGES
  38 #endif
  39
  40 #if CONFIG_JFFS2_FS_DEBUG > 1
  41 #define JFFS2_DBG_FRAGTREE2_MESSAGES
  42 #define JFFS2_DBG_READINODE2_MESSAGES
  43 #define JFFS2_DBG_MEMALLOC_MESSAGES
  44 #endif
  45
  46 /* Sanity checks are supposed to be light-weight and enabled by default */
  47 #define JFFS2_DBG_SANITY_CHECKS
  48
  49 /*
  50  * Dx() are mainly used for debugging messages, they must go away and be
  51  * superseded by nicer dbg_xxx() macros...
  52  */
  53 #if CONFIG_JFFS2_FS_DEBUG > 0
  54 #define D1(x) x
  55 #else
  56 #define D1(x)
  57 #endif
  58
  59 #if CONFIG_JFFS2_FS_DEBUG > 1
  60 #define D2(x) x
  61 #else
  62 #define D2(x)
  63 #endif
  64
  65 /* The prefixes of JFFS2 messages */
  66 #define JFFS2_DBG_PREFIX        "[JFFS2 DBG]"
  67 #define JFFS2_ERR_PREFIX        "JFFS2 error:"
  68 #define JFFS2_WARN_PREFIX       "JFFS2 warning:"
  69 #define JFFS2_NOTICE_PREFIX     "JFFS2 notice:"
  70
  71 #define JFFS2_ERR       KERN_ERR
  72 #define JFFS2_WARN      KERN_WARNING
  73 #define JFFS2_NOT       KERN_NOTICE
  74 #define JFFS2_DBG       KERN_DEBUG
  75
  76 #define JFFS2_DBG_MSG_PREFIX    JFFS2_DBG JFFS2_DBG_PREFIX
  77 #define JFFS2_ERR_MSG_PREFIX    JFFS2_ERR JFFS2_ERR_PREFIX
  78 #define JFFS2_WARN_MSG_PREFIX   JFFS2_WARN JFFS2_WARN_PREFIX
  79 #define JFFS2_NOTICE_MSG_PREFIX JFFS2_NOT JFFS2_NOTICE_PREFIX
  80
  81 /* JFFS2 message macros */
  82 #define JFFS2_ERROR(fmt, ...)                                           \
  83         do {                                                            \
  84                 printk(JFFS2_ERR_MSG_PREFIX                             \
  85                         " (%d) %s: " fmt, task_pid_nr(current),         \
  86                         __func__ , ##__VA_ARGS__);                      \
  87         } while(0)
  88
  89 #define JFFS2_WARNING(fmt, ...)                                         \
  90         do {                                                            \
  91                 printk(JFFS2_WARN_MSG_PREFIX                            \
  92                         " (%d) %s: " fmt, task_pid_nr(current),         \
  93                         __func__ , ##__VA_ARGS__);                      \
  94         } while(0)
  95
  96 #define JFFS2_NOTICE(fmt, ...)                                          \
  97         do {                                                            \
  98                 printk(JFFS2_NOTICE_MSG_PREFIX                          \
  99                         " (%d) %s: " fmt, task_pid_nr(current),         \
 100                         __func__ , ##__VA_ARGS__);                      \
 101         } while(0)
 102
 103 #define JFFS2_DEBUG(fmt, ...)                                           \
 104         do {                                                            \
 105                 printk(JFFS2_DBG_MSG_PREFIX                             \
 106                         " (%d) %s: " fmt, task_pid_nr(current),         \
 107                         __func__ , ##__VA_ARGS__);                      \
 108         } while(0)
 109
 110 /*
 111  * We split our debugging messages on several parts, depending on the JFFS2
 112  * subsystem the message belongs to.
 113  */
 114 /* Read inode debugging messages */
 115 #ifdef JFFS2_DBG_READINODE_MESSAGES
 116 #define dbg_readinode(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 117 #else
 118 #define dbg_readinode(fmt, ...)
 119 #endif
 120 #ifdef JFFS2_DBG_READINODE2_MESSAGES
 121 #define dbg_readinode2(fmt, ...)        JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 122 #else
 123 #define dbg_readinode2(fmt, ...)
 124 #endif
 125
 126 /* Fragtree build debugging messages */
 127 #ifdef JFFS2_DBG_FRAGTREE_MESSAGES
 128 #define dbg_fragtree(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 129 #else
 130 #define dbg_fragtree(fmt, ...)
 131 #endif
 132 #ifdef JFFS2_DBG_FRAGTREE2_MESSAGES
 133 #define dbg_fragtree2(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 134 #else
 135 #define dbg_fragtree2(fmt, ...)
 136 #endif
 137
 138 /* Directory entry list manilulation debugging messages */
 139 #ifdef JFFS2_DBG_DENTLIST_MESSAGES
 140 #define dbg_dentlist(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 141 #else
 142 #define dbg_dentlist(fmt, ...)
 143 #endif
 144
 145 /* Print the messages about manipulating node_refs */
 146 #ifdef JFFS2_DBG_NODEREF_MESSAGES
 147 #define dbg_noderef(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 148 #else
 149 #define dbg_noderef(fmt, ...)
 150 #endif
 151
 152 /* Manipulations with the list of inodes (JFFS2 inocache) */
 153 #ifdef JFFS2_DBG_INOCACHE_MESSAGES
 154 #define dbg_inocache(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 155 #else
 156 #define dbg_inocache(fmt, ...)
 157 #endif
 158
 159 /* Summary debugging messages */
 160 #ifdef JFFS2_DBG_SUMMARY_MESSAGES
 161 #define dbg_summary(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 162 #else
 163 #define dbg_summary(fmt, ...)
 164 #endif
 165
 166 /* File system build messages */
 167 #ifdef JFFS2_DBG_FSBUILD_MESSAGES
 168 #define dbg_fsbuild(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 169 #else
 170 #define dbg_fsbuild(fmt, ...)
 171 #endif
 172
 173 /* Watch the object allocations */
 174 #ifdef JFFS2_DBG_MEMALLOC_MESSAGES
 175 #define dbg_memalloc(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 176 #else
 177 #define dbg_memalloc(fmt, ...)
 178 #endif
 179
 180 /* Watch the XATTR subsystem */
 181 #ifdef JFFS2_DBG_XATTR_MESSAGES
 182 #define dbg_xattr(fmt, ...)  JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 183 #else
 184 #define dbg_xattr(fmt, ...)
 185 #endif
 186
 187 /* "Sanity" checks */
 188 void
 189 __jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
 190                                      struct jffs2_eraseblock *jeb);
 191 void
 192 __jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
 193                               struct jffs2_eraseblock *jeb);
 194
 195 /* "Paranoia" checks */
 196 void
 197 __jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
 198 void
 199 __jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f);
 200 void
 201 __jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
 202                                 struct jffs2_eraseblock *jeb);
 203 void
 204 __jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
 205                                        struct jffs2_eraseblock *jeb);
 206 void
 207 __jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
 208                                     uint32_t ofs, int len);
 209
 210 /* "Dump" functions */
 211 void
 212 __jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
 213 void
 214 __jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb);
 215 void
 216 __jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
 217 void
 218 __jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c);
 219 void
 220 __jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,
 221                            struct jffs2_eraseblock *jeb);
 222 void
 223 __jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
 224                                   struct jffs2_eraseblock *jeb);
 225 void
 226 __jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
 227 void
 228 __jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f);
 229 void
 230 __jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs);
 231 void
 232 __jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs);
 233
 234 #ifdef JFFS2_DBG_PARANOIA_CHECKS
 235 #define jffs2_dbg_fragtree_paranoia_check(f)                    \
 236         __jffs2_dbg_fragtree_paranoia_check(f)
 237 #define jffs2_dbg_fragtree_paranoia_check_nolock(f)             \
 238         __jffs2_dbg_fragtree_paranoia_check_nolock(f)
 239 #define jffs2_dbg_acct_paranoia_check(c, jeb)                   \
 240         __jffs2_dbg_acct_paranoia_check(c,jeb)
 241 #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)            \
 242         __jffs2_dbg_acct_paranoia_check_nolock(c,jeb)
 243 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)          \
 244         __jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
 245 #else
 246 #define jffs2_dbg_fragtree_paranoia_check(f)
 247 #define jffs2_dbg_fragtree_paranoia_check_nolock(f)
 248 #define jffs2_dbg_acct_paranoia_check(c, jeb)
 249 #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)
 250 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
 251 #endif /* !JFFS2_PARANOIA_CHECKS */
 252
 253 #ifdef JFFS2_DBG_DUMPS
 254 #define jffs2_dbg_dump_jeb(c, jeb)                              \
 255         __jffs2_dbg_dump_jeb(c, jeb);
 256 #define jffs2_dbg_dump_jeb_nolock(jeb)                          \
 257         __jffs2_dbg_dump_jeb_nolock(jeb);
 258 #define jffs2_dbg_dump_block_lists(c)                           \
 259         __jffs2_dbg_dump_block_lists(c)
 260 #define jffs2_dbg_dump_block_lists_nolock(c)                    \
 261         __jffs2_dbg_dump_block_lists_nolock(c)
 262 #define jffs2_dbg_dump_fragtree(f)                              \
 263         __jffs2_dbg_dump_fragtree(f);
 264 #define jffs2_dbg_dump_fragtree_nolock(f)                       \
 265         __jffs2_dbg_dump_fragtree_nolock(f);
 266 #define jffs2_dbg_dump_buffer(buf, len, offs)                   \
 267         __jffs2_dbg_dump_buffer(*buf, len, offs);
 268 #define jffs2_dbg_dump_node(c, ofs)                             \
 269         __jffs2_dbg_dump_node(c, ofs);
 270 #else
 271 #define jffs2_dbg_dump_jeb(c, jeb)
 272 #define jffs2_dbg_dump_jeb_nolock(jeb)
 273 #define jffs2_dbg_dump_block_lists(c)
 274 #define jffs2_dbg_dump_block_lists_nolock(c)
 275 #define jffs2_dbg_dump_fragtree(f)
 276 #define jffs2_dbg_dump_fragtree_nolock(f)
 277 #define jffs2_dbg_dump_buffer(buf, len, offs)
 278 #define jffs2_dbg_dump_node(c, ofs)
 279 #endif /* !JFFS2_DBG_DUMPS */
 280
 281 #ifdef JFFS2_DBG_SANITY_CHECKS
 282 #define jffs2_dbg_acct_sanity_check(c, jeb)                     \
 283         __jffs2_dbg_acct_sanity_check(c, jeb)
 284 #define jffs2_dbg_acct_sanity_check_nolock(c, jeb)              \
 285         __jffs2_dbg_acct_sanity_check_nolock(c, jeb)
 286 #else
 287 #define jffs2_dbg_acct_sanity_check(c, jeb)
 288 #define jffs2_dbg_acct_sanity_check_nolock(c, jeb)
 289 #endif /* !JFFS2_DBG_SANITY_CHECKS */
 290
 291 #endif /* _JFFS2_DEBUG_H_ */