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 Library
8 * General Public License, version 2.
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 */
ext2fs_read_bb_FILE2(ext2_filsys fs,FILE * f,ext2_badblocks_list * bb_list,void * priv_data,void (* invalid)(ext2_filsys fs,blk_t blk,char * badstr,void * priv_data))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 blk64_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, "%llu", &blockno);
58 if (count <= 0)
59 continue;
60 /* Badblocks isn't going to be updated for 64bit */
61 if (blockno >> 32)
62 return EOVERFLOW;
63 if (fs &&
64 ((blockno < fs->super->s_first_data_block) ||
65 (blockno >= ext2fs_blocks_count(fs->super)))) {
66 if (invalid)
67 (invalid)(fs, blockno, buf, priv_data);
68 continue;
69 }
70 retval = ext2fs_badblocks_list_add(*bb_list, blockno);
71 if (retval)
72 return retval;
73 }
74 return 0;
75 }
76
77 struct compat_struct {
78 void (*invalid)(ext2_filsys, blk_t);
79 };
80
call_compat_invalid(ext2_filsys fs,blk_t blk,char * badstr EXT2FS_ATTR ((unused)),void * priv_data)81 static void call_compat_invalid(ext2_filsys fs, blk_t blk,
82 char *badstr EXT2FS_ATTR((unused)),
83 void *priv_data)
84 {
85 struct compat_struct *st;
86
87 st = (struct compat_struct *) priv_data;
88 if (st->invalid)
89 (st->invalid)(fs, blk);
90 }
91
92
93 /*
94 * Reads a list of bad blocks from a FILE *
95 */
ext2fs_read_bb_FILE(ext2_filsys fs,FILE * f,ext2_badblocks_list * bb_list,void (* invalid)(ext2_filsys fs,blk_t blk))96 errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
97 ext2_badblocks_list *bb_list,
98 void (*invalid)(ext2_filsys fs, blk_t blk))
99 {
100 struct compat_struct st;
101
102 st.invalid = invalid;
103
104 return ext2fs_read_bb_FILE2(fs, f, bb_list, &st,
105 call_compat_invalid);
106 }
107
108
109