fs/jffs2/debug.h

   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 1.1 2005/07/17 06:56:20 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 1
  20 #endif
  21
  22 #if CONFIG_JFFS2_FS_DEBUG > 0
  23 #define JFFS2_DBG_PARANOIA_CHECKS
  24 #define D1(x) x
  25 #else
  26 #define D1(x)
  27 #endif
  28
  29 #if CONFIG_JFFS2_FS_DEBUG > 1
  30 #define D2(x) x
  31 #else
  32 #define D2(x)
  33 #endif
  34
  35 /* Enable JFFS2 sanity checks */
  36 #define JFFS2_DBG_SANITY_CHECKS
  37
  38 #if CONFIG_JFFS2_FS_DEBUG > 0
  39 void
  40 jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
  41
  42 void
  43 jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
  44
  45 void
  46 jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
  47
  48 void
  49 jffs2_dbg_dump_buffer(char *buf, int len, uint32_t offs);
  50 #endif
  51
  52 #ifdef JFFS2_DBG_PARANOIA_CHECKS
  53 void
  54 jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
  55
  56 void
  57 jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
  58                               struct jffs2_eraseblock *jeb);
  59
  60 void
  61 jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
  62                                   uint32_t ofs, int len);
  63 #else
  64 #define jffs2_dbg_fragtree_paranoia_check(f)
  65 #define jffs2_dbg_acct_paranoia_check(c, jeb)
  66 #define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
  67 #endif /* !JFFS2_PARANOIA_CHECKS */
  68
  69 #ifdef JFFS2_DBG_SANITY_CHECKS
  70 /*
  71  * Check the space accounting of the file system and of
  72  * the JFFS3 erasable block 'jeb'.
  73  */
  74 static inline void
  75 jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
  76                             struct jffs2_eraseblock *jeb)
  77 {
  78         if (unlikely(jeb && jeb->used_size + jeb->dirty_size +
  79                         jeb->free_size + jeb->wasted_size +
  80                         jeb->unchecked_size != c->sector_size)) {
  81                 printk(KERN_ERR "Eeep. Space accounting for block at 0x%08x is screwed\n", jeb->offset);
  82                 printk(KERN_ERR "free %#08x + dirty %#08x + used %#08x + wasted %#08x + unchecked "
  83                                 "%#08x != total %#08x\n", jeb->free_size, jeb->dirty_size, jeb->used_size,
  84                                 jeb->wasted_size, jeb->unchecked_size, c->sector_size);
  85                 BUG();
  86         }
  87
  88         if (unlikely(c->used_size + c->dirty_size + c->free_size + c->erasing_size + c->bad_size
  89                                 + c->wasted_size + c->unchecked_size != c->flash_size)) {
  90                 printk(KERN_ERR "Eeep. Space accounting superblock info is screwed\n");
  91                 printk(KERN_ERR "free %#08x + dirty %#08x + used %#08x + erasing %#08x + bad %#08x + "
  92                                 "wasted %#08x + unchecked %#08x != total %#08x\n",
  93                                 c->free_size, c->dirty_size, c->used_size, c->erasing_size, c->bad_size,
  94                                 c->wasted_size, c->unchecked_size, c->flash_size);
  95                 BUG();
  96         }
  97 }
  98 #else
  99 static inline void
 100 jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
 101                             struct jffs2_eraseblock *jeb);
 102 #endif /* !JFFS2_DBG_SANITY_CHECKS */
 103
 104 #endif /* _JFFS2_DEBUG_H_ */