e2fsprogs/ext2fs/read_bb_file.c

   1 /*
   2  * read_bb_file.c --- read a list of bad blocks from a FILE *
   3  *
   4  * Copyright (C) 1994, 1995, 2000 Theodore Ts'o.
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Public
   8  * License.
   9  * %End-Header%
  10  */
  11
  12 #include <stdio.h>
  13 #include <string.h>
  14 #if HAVE_UNISTD_H
  15 #include <unistd.h>
  16 #endif
  17 #include <fcntl.h>
  18 #include <time.h>
  19 #if HAVE_SYS_STAT_H
  20 #include <sys/stat.h>
  21 #endif
  22 #if HAVE_SYS_TYPES_H
  23 #include <sys/types.h>
  24 #endif
  25
  26 #include "ext2_fs.h"
  27 #include "ext2fs.h"
  28
  29 /*
  30  * Reads a list of bad blocks from  a FILE *
  31  */
  32 errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
  33                                ext2_badblocks_list *bb_list,
  34                                void *priv_data,
  35                                void (*invalid)(ext2_filsys fs,
  36                                                blk_t blk,
  37                                                char *badstr,
  38                                                void *priv_data))
  39 {
  40         errcode_t       retval;
  41         blk_t           blockno;
  42         int             count;
  43         char            buf[128];
  44
  45         if (fs)
  46                 EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
  47
  48         if (!*bb_list) {
  49                 retval = ext2fs_badblocks_list_create(bb_list, 10);
  50                 if (retval)
  51                         return retval;
  52         }
  53
  54         while (!feof (f)) {
  55                 if (fgets(buf, sizeof(buf), f) == NULL)
  56                         break;
  57                 count = sscanf(buf, "%u", &blockno);
  58                 if (count <= 0)
  59                         continue;
  60                 if (fs &&
  61                     ((blockno < fs->super->s_first_data_block) ||
  62                     (blockno >= fs->super->s_blocks_count))) {
  63                         if (invalid)
  64                                 (invalid)(fs, blockno, buf, priv_data);
  65                         continue;
  66                 }
  67                 retval = ext2fs_badblocks_list_add(*bb_list, blockno);
  68                 if (retval)
  69                         return retval;
  70         }
  71         return 0;
  72 }
  73
  74 static void call_compat_invalid(ext2_filsys fs, blk_t blk,
  75                                 char *badstr EXT2FS_ATTR((unused)),
  76                                 void *priv_data)
  77 {
  78         void (*invalid)(ext2_filsys, blk_t);
  79
  80         invalid = (void (*)(ext2_filsys, blk_t)) priv_data;
  81         if (invalid)
  82                 invalid(fs, blk);
  83 }
  84
  85
  86 /*
  87  * Reads a list of bad blocks from  a FILE *
  88  */
  89 errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
  90                               ext2_badblocks_list *bb_list,
  91                               void (*invalid)(ext2_filsys fs, blk_t blk))
  92 {
  93         return ext2fs_read_bb_FILE2(fs, f, bb_list, (void *) invalid,
  94                                     call_compat_invalid);
  95 }
  96
  97