fs/ext2/ext2_utils.h

   1 /*
   2  *
   3  * (c) 2008-2009 Laurent Vivier <Laurent@lvivier.info>
   4  *
   5  * This file has been copied from EMILE, http://emile.sf.net
   6  *
   7  */
   8
   9 #ifndef __EXT2_UTILS_H__
  10 #define __EXT2_UTILS_H__
  11
  12 #include "ext2_fs.h"
  13 #include "ext2.h"
  14
  15 /* from linux/stat.h */
  16
  17 #define S_IFMT  00170000
  18 #define S_IFSOCK 0140000
  19 #define S_IFLNK  0120000
  20 #define S_IFREG  0100000
  21 #define S_IFBLK  0060000
  22 #define S_IFDIR  0040000
  23 #define S_IFCHR  0020000
  24 #define S_IFIFO  0010000
  25 #define S_ISUID  0004000
  26 #define S_ISGID  0002000
  27 #define S_ISVTX  0001000
  28
  29 #define S_ISLNK(m)      (((m) & S_IFMT) == S_IFLNK)
  30 #define S_ISREG(m)      (((m) & S_IFMT) == S_IFREG)
  31 #define S_ISDIR(m)      (((m) & S_IFMT) == S_IFDIR)
  32 #define S_ISCHR(m)      (((m) & S_IFMT) == S_IFCHR)
  33 #define S_ISBLK(m)      (((m) & S_IFMT) == S_IFBLK)
  34 #define S_ISFIFO(m)     (((m) & S_IFMT) == S_IFIFO)
  35 #define S_ISSOCK(m)     (((m) & S_IFMT) == S_IFSOCK)
  36
  37 /* utilities */
  38
  39 extern int ext2_probe(int fd, long long offset);
  40 extern void ext2_get_super(int fd, struct ext2_super_block *super);
  41 extern void ext2_read_block(ext2_VOLUME* volume, unsigned int fsblock);
  42 extern void ext2_get_group_desc(ext2_VOLUME* volume,
  43                                 int group_id, struct ext2_group_desc *gdp);
  44 extern int ext2_get_inode(ext2_VOLUME* volume,
  45                           unsigned int ino, struct ext2_inode *inode);
  46 extern unsigned int ext2_get_block_addr(ext2_VOLUME* volume,
  47                                         struct ext2_inode *inode,
  48                                         unsigned int logical);
  49 extern int ext2_read_data(ext2_VOLUME* volume, struct ext2_inode *inode,
  50                           off_t offset, char *buffer, size_t length);
  51 extern off_t ext2_dir_entry(ext2_VOLUME *volume, struct ext2_inode *inode,
  52                             off_t offset, struct ext2_dir_entry_2 *entry);
  53 extern unsigned int ext2_seek_name(ext2_VOLUME *volume, const char *name);
  54 #endif /* __EXT2_UTILS_H__ */