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   1 /*
   2  * JFFS2 -- Journalling Flash File System, Version 2.
   3  *
   4  * Copyright (C) 2001-2003 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  * $Id: debug.h,v 1.13 2005/08/17 13:42:06 dedekind Exp $
  11  *
  12  */
  13 #ifndef _JFFS2_DEBUG_H_
  14 #define _JFFS2_DEBUG_H_
  15
  16 #include <linux/config.h>
  17
  18 #ifndef CONFIG_JFFS2_FS_DEBUG
  19 #define CONFIG_JFFS2_FS_DEBUG 0
  20 #endif
  21
  22 #if CONFIG_JFFS2_FS_DEBUG == 1
  23 /* Enable "paranoia" checks and dumps */
  24 #define JFFS2_DBG_PARANOIA_CHECKS
  25 #define JFFS2_DBG_DUMPS
  26 #define JFFS2_DBG_READINODE_MESSAGES
  27 #define JFFS2_DBG_FRAGTREE_MESSAGES
  28 #define JFFS2_DBG_DENTLIST_MESSAGES
  29 #define JFFS2_DBG_NODEREF_MESSAGES
  30 #define JFFS2_DBG_INOCACHE_MESSAGES
  31 #endif
  32
  33 #if CONFIG_JFFS2_FS_DEBUG == 2
  34 #define JFFS2_DBG_FRAGTREE2_MESSAGES
  35 #endif
  36
  37 /* Sanity checks are supposed to be light-weight and enabled by default */
  38 #define JFFS2_DBG_SANITY_CHECKS
  39
  40 /*
  41  * Dx() are mainly used for debugging messages, they must go away and be
  42  * superseded by nicer JFFS2_DBG_XXX() macros...
  43  */
  44 #if CONFIG_JFFS2_FS_DEBUG > 0
  45 #define D1(x) x
  46 #else
  47 #define D1(x)
  48 #endif
  49
  50 #if CONFIG_JFFS2_FS_DEBUG > 1
  51 #define D2(x) x
  52 #else
  53 #define D2(x)
  54 #endif
  55
  56 /* The prefixes of JFFS2 messages */
  57 #define JFFS2_DBG_MSG_PREFIX "[JFFS2 DBG]"
  58 #define JFFS2_ERR_MSG_PREFIX "JFFS2 error:"
  59 #define JFFS2_WARN_MSG_PREFIX "JFFS2 warning:"
  60 #define JFFS2_NOTICE_MSG_PREFIX "JFFS2 notice:"
  61
  62 #define JFFS2_ERR_LVL           KERN_ERR
  63 #define JFFS2_WARN_LVL          KERN_WARNING
  64 #define JFFS2_NOTICE_LVL        KERN_NOTICE
  65 #define JFFS2_DBG_LVL           KERN_DEBUG
  66
  67 /* JFFS2 message macros */
  68 #define JFFS2_ERROR(fmt, ...)                                           \
  69         do {                                                            \
  70                 printk(JFFS2_ERR_LVL JFFS2_ERR_MSG_PREFIX               \
  71                         " %d (%s): " fmt, current->pid,                 \
  72                         __FUNCTION__, ##__VA_ARGS__);                   \
  73         } while(0)
  74
  75 #define JFFS2_WARNING(fmt, ...)                                         \
  76         do {                                                            \
  77                 printk(JFFS2_WARN_LVL JFFS2_WARN_MSG_PREFIX             \
  78                         " %d (%s): " fmt, current->pid,                 \
  79                         __FUNCTION__, ##__VA_ARGS__);                   \
  80         } while(0)
  81
  82 #define JFFS2_NOTICE(fmt, ...)                                          \
  83         do {                                                            \
  84                 printk(JFFS2_NOTICE_LVL JFFS2_NOTICE_MSG_PREFIX         \
  85                         " %d (%s): " fmt, current->pid,                 \
  86                         __FUNCTION__, ##__VA_ARGS__);                   \
  87         } while(0)
  88
  89 #define JFFS2_DEBUG(fmt, ...)                                           \
  90         do {                                                            \
  91                 printk(JFFS2_DBG_LVL JFFS2_DBG_MSG_PREFIX               \
  92                         " %d (%s): " fmt, current->pid,                 \
  93                         __FUNCTION__, ##__VA_ARGS__);                   \
  94         } while(0)
  95
  96 /*
  97  * We split our debugging messages on several parts, depending on the JFFS2
  98  * subsystem the message belongs to.
  99  */
 100 /* Read inode debugging messages */
 101 #ifdef JFFS2_DBG_READINODE_MESSAGES
 102 #define JFFS2_DBG_READINODE(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 103 #else
 104 #define JFFS2_DBG_READINODE(fmt, ...)
 105 #endif
 106
 107 /* Fragtree build debugging messages */
 108 #ifdef JFFS2_DBG_FRAGTREE_MESSAGES
 109 #define JFFS2_DBG_FRAGTREE(fmt, ...)    JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 110 #else
 111 #define JFFS2_DBG_FRAGTREE(fmt, ...)
 112 #endif
 113 #ifdef JFFS2_DBG_FRAGTREE2_MESSAGES
 114 #define JFFS2_DBG_FRAGTREE2(fmt, ...)   JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 115 #else
 116 #define JFFS2_DBG_FRAGTREE2(fmt, ...)
 117 #endif
 118
 119 /* Directory entry list manilulation debugging messages */
 120 #ifdef JFFS2_DBG_DENTLIST_MESSAGES
 121 #define JFFS2_DBG_DENTLIST(fmt, ...)    JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 122 #else
 123 #define JFFS2_DBG_DENTLIST(fmt, ...)
 124 #endif
 125
 126 /* Print the messages about manipulating node_refs */
 127 #ifdef JFFS2_DBG_NODEREF_MESSAGES
 128 #define JFFS2_DBG_NODEREF(fmt, ...)     JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 129 #else
 130 #define JFFS2_DBG_NODEREF(fmt, ...)
 131 #endif
 132
 133 /* Manipulations with the list of inodes (JFFS2 inocache) */
 134 #ifdef JFFS2_DBG_INOCACHE_MESSAGES
 135 #define JFFS2_DBG_INOCACHE(fmt, ...)    JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 136 #else
 137 #define JFFS2_DBG_INOCACHE(fmt, ...)
 138 #endif
 139
 140 /* Watch the object allocations */
 141 #ifdef JFFS2_DBG_MEMALLOC_MESSAGES
 142 #define JFFS2_DBG_MEMALLOC(fmt, ...)    JFFS2_DEBUG(fmt, ##__VA_ARGS__)
 143 #else
 144 #define JFFS2_DBG_MEMALLOC(fmt, ...)
 145 #endif
 146
 147
 148 /* "Sanity" checks */
 149 void
 150 __jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
 151                                      struct jffs2_eraseblock *jeb);
 152 void
 153 __jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
 154                               struct jffs2_eraseblock *jeb);
 155
 156 /* "Paranoia" checks */
 157 void
 158 __jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
 159 void
 160 __jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f);
 161 void
 162 __jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
 163                                 struct jffs2_eraseblock *jeb);
 164 void
 165 __jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
 166                                        struct jffs2_eraseblock *jeb);
 167 void
 168 __jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
 169                                     uint32_t ofs, int len);
 170
 171 /* "Dump" functions */
 172 void
 173 __jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
 174 void
 175 __jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb);
 176 void
 177 __jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
 178 void
 179 __jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c);
 180 void
 181 __jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,
 182                            struct jffs2_eraseblock *jeb);
 183 void
 184 __jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
 185                                   struct jffs2_eraseblock *jeb);
 186 void
 187 __jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
 188 void
 189 __jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f);
 190 void
 191 __jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs);
 192 void
 193 __jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs);
 194
 195 #ifdef JFFS2_DBG_PARANOIA_CHECKS
 196 #define jffs2_dbg_fragtree_paranoia_check(f)                    \
 197         __jffs2_dbg_fragtree_paranoia_check(f)
 198 #define jffs2_dbg_fragtree_paranoia_check_nolock(f)             \
 199         __jffs2_dbg_fragtree_paranoia_check_nolock(f)
 200 #define jffs2_dbg_acct_paranoia_check(c, jeb)                   \
 201         __jffs2_dbg_acct_paranoia_check(c,jeb)
 202 #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)            \
 203         __jffs2_dbg_acct_paranoia_check_nolock(c,jeb)
 204 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)          \
 205         __jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
 206 #else
 207 #define jffs2_dbg_fragtree_paranoia_check(f)
 208 #define jffs2_dbg_fragtree_paranoia_check_nolock(f)
 209 #define jffs2_dbg_acct_paranoia_check(c, jeb)
 210 #define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)
 211 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
 212 #endif /* !JFFS2_PARANOIA_CHECKS */
 213
 214 #ifdef JFFS2_DBG_DUMPS
 215 #define jffs2_dbg_dump_jeb(c, jeb)                              \
 216         __jffs2_dbg_dump_jeb(c, jeb);
 217 #define jffs2_dbg_dump_jeb_nolock(jeb)                          \
 218         __jffs2_dbg_dump_jeb_nolock(jeb);
 219 #define jffs2_dbg_dump_block_lists(c)                           \
 220         __jffs2_dbg_dump_block_lists(c)
 221 #define jffs2_dbg_dump_block_lists_nolock(c)                    \
 222         __jffs2_dbg_dump_block_lists_nolock(c)
 223 #define jffs2_dbg_dump_fragtree(f)                              \
 224         __jffs2_dbg_dump_fragtree(f);
 225 #define jffs2_dbg_dump_fragtree_nolock(f)                       \
 226         __jffs2_dbg_dump_fragtree_nolock(f);
 227 #define jffs2_dbg_dump_buffer(buf, len, offs)                   \
 228         __jffs2_dbg_dump_buffer(*buf, len, offs);
 229 #define jffs2_dbg_dump_node(c, ofs)                             \
 230         __jffs2_dbg_dump_node(c, ofs);
 231 #else
 232 #define jffs2_dbg_dump_jeb(c, jeb)
 233 #define jffs2_dbg_dump_jeb_nolock(jeb)
 234 #define jffs2_dbg_dump_block_lists(c)
 235 #define jffs2_dbg_dump_block_lists_nolock(c)
 236 #define jffs2_dbg_dump_fragtree(f)
 237 #define jffs2_dbg_dump_fragtree_nolock(f)
 238 #define jffs2_dbg_dump_buffer(buf, len, offs)
 239 #define jffs2_dbg_dump_node(c, ofs)
 240 #endif /* !JFFS2_DBG_DUMPS */
 241
 242 #ifdef JFFS2_DBG_SANITY_CHECKS
 243 #define jffs2_dbg_acct_sanity_check(c, jeb)                     \
 244         __jffs2_dbg_acct_sanity_check(c, jeb)
 245 #define jffs2_dbg_acct_sanity_check_nolock(c, jeb)              \
 246         __jffs2_dbg_acct_sanity_check_nolock(c, jeb)
 247 #else
 248 #define jffs2_dbg_acct_sanity_check(c, jeb)
 249 #define jffs2_dbg_acct_sanity_check_nolock(c, jeb)
 250 #endif /* !JFFS2_DBG_SANITY_CHECKS */
 251
 252 #endif /* _JFFS2_DEBUG_H_ */