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file_ext.c: remove a dependency to ext2.c

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Christophe Grenier 2009-01-18 14:19:26 +01:00
parent af4972541b
commit e333a67ac7
1 changed files with 21 additions and 8 deletions
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23
src/file_ext.c
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@ -54,12 +54,25 @@ static void register_header_check_ext2_sb(file_stat_t *file_stat)
static int header_check_ext2_sb(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new)
{
if(recover_EXT2(NULL,(const struct ext2_super_block *)buffer,NULL,0,0)==0)
{
const struct ext2_super_block *sb=(const struct ext2_super_block *)buffer;
if(le16(sb->s_magic)!=EXT2_SUPER_MAGIC)
return 0;
if (le32(sb->s_free_blocks_count) >= le32(sb->s_blocks_count))
return 0;
if (le32(sb->s_free_inodes_count) >= le32(sb->s_inodes_count))
return 0;
if (le16(sb->s_errors)!=0 &&
(le16(sb->s_errors) != EXT2_ERRORS_CONTINUE) &&
(le16(sb->s_errors) != EXT2_ERRORS_RO) &&
(le16(sb->s_errors) != EXT2_ERRORS_PANIC))
return 0;
if ((le16(sb->s_state) & ~(EXT2_VALID_FS | EXT2_ERROR_FS))!=0)
return 0;
if (le32(sb->s_blocks_count) == 0) /* reject empty filesystem */
return 0;
if(le32(sb->s_log_block_size)>2) /* block size max = 4096, can be 8192 on alpha */
return 0;
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_ext2_sb.extension;
return 1;
}
return 0;
}