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 "config.h"
13 #include <stdio.h>
14 #include <string.h>
15 #if HAVE_UNISTD_H
16 #include <unistd.h>
17 #endif
18 #include <fcntl.h>
19 #include <time.h>
20 #if HAVE_SYS_STAT_H
21 #include <sys/stat.h>
22 #endif
23 #if HAVE_SYS_TYPES_H
24 #include <sys/types.h>
25 #endif
26
27 #include "ext2_fs.h"
28 #include "ext2fs.h"
29
30 /*
31 * Reads a list of bad blocks from a FILE *
32 */
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))33 errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f,
34 ext2_badblocks_list *bb_list,
35 void *priv_data,
36 void (*invalid)(ext2_filsys fs,
37 blk_t blk,
38 char *badstr,
39 void *priv_data))
40 {
41 errcode_t retval;
42 blk64_t blockno;
43 int count;
44 char buf[128];
45
46 if (fs)
47 EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
48
49 if (!*bb_list) {
50 retval = ext2fs_badblocks_list_create(bb_list, 10);
51 if (retval)
52 return retval;
53 }
54
55 while (!feof (f)) {
56 if (fgets(buf, sizeof(buf), f) == NULL)
57 break;
58 count = sscanf(buf, "%llu", &blockno);
59 if (count <= 0)
60 continue;
61 /* Badblocks isn't going to be updated for 64bit */
62 if (blockno >> 32)
63 return EOVERFLOW;
64 if (fs &&
65 ((blockno < fs->super->s_first_data_block) ||
66 (blockno >= ext2fs_blocks_count(fs->super)))) {
67 if (invalid)
68 (invalid)(fs, blockno, buf, priv_data);
69 continue;
70 }
71 retval = ext2fs_badblocks_list_add(*bb_list, blockno);
72 if (retval)
73 return retval;
74 }
75 return 0;
76 }
77
78 struct compat_struct {
79 void (*invalid)(ext2_filsys, blk_t);
80 };
81
call_compat_invalid(ext2_filsys fs,blk_t blk,char * badstr EXT2FS_ATTR ((unused)),void * priv_data)82 static void call_compat_invalid(ext2_filsys fs, blk_t blk,
83 char *badstr EXT2FS_ATTR((unused)),
84 void *priv_data)
85 {
86 struct compat_struct *st;
87
88 st = (struct compat_struct *) priv_data;
89 if (st->invalid)
90 (st->invalid)(fs, blk);
91 }
92
93
94 /*
95 * Reads a list of bad blocks from a FILE *
96 */
ext2fs_read_bb_FILE(ext2_filsys fs,FILE * f,ext2_badblocks_list * bb_list,void (* invalid)(ext2_filsys fs,blk_t blk))97 errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
98 ext2_badblocks_list *bb_list,
99 void (*invalid)(ext2_filsys fs, blk_t blk))
100 {
101 struct compat_struct st;
102
103 st.invalid = invalid;
104
105 return ext2fs_read_bb_FILE2(fs, f, bb_list, &st,
106 call_compat_invalid);
107 }
108
109
110