release/src/router/busybox/e2fsprogs/ext2fs/gen_bitmap.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * gen_bitmap.c --- Generic bitmap routines that used to be inlined.
   4  *
   5  * Copyright (C) 2001 Theodore Ts'o.
   6  *
   7  * %Begin-Header%
   8  * This file may be redistributed under the terms of the GNU Public
   9  * License.
  10  * %End-Header%
  11  */
  12
  13
  14 #include <stdio.h>
  15 #include <string.h>
  16 #if HAVE_UNISTD_H
  17 #include <unistd.h>
  18 #endif
  19 #include <fcntl.h>
  20 #include <time.h>
  21 #if HAVE_SYS_STAT_H
  22 #include <sys/stat.h>
  23 #endif
  24 #if HAVE_SYS_TYPES_H
  25 #include <sys/types.h>
  26 #endif
  27
  28 #include "ext2_fs.h"
  29 #include "ext2fs.h"
  30
  31 int ext2fs_mark_generic_bitmap(ext2fs_generic_bitmap bitmap,
  32                                          __u32 bitno)
  33 {
  34         if ((bitno < bitmap->start) || (bitno > bitmap->end)) {
  35                 ext2fs_warn_bitmap2(bitmap, EXT2FS_MARK_ERROR, bitno);
  36                 return 0;
  37         }
  38         return ext2fs_set_bit(bitno - bitmap->start, bitmap->bitmap);
  39 }
  40
  41 int ext2fs_unmark_generic_bitmap(ext2fs_generic_bitmap bitmap,
  42                                            blk_t bitno)
  43 {
  44         if ((bitno < bitmap->start) || (bitno > bitmap->end)) {
  45                 ext2fs_warn_bitmap2(bitmap, EXT2FS_UNMARK_ERROR, bitno);
  46                 return 0;
  47         }
  48         return ext2fs_clear_bit(bitno - bitmap->start, bitmap->bitmap);
  49 }