Initial public busybox upstream commit
[busybox4maemo] / e2fsprogs / old_e2fsprogs / ext2fs / read_bb_file.c
1 /* vi: set sw=4 ts=4: */
2 /*
3  * read_bb_file.c --- read a list of bad blocks from a FILE *
4  *
5  * Copyright (C) 1994, 1995, 2000 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 #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  */
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         blk_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, "%u", &blockno);
59                 if (count <= 0)
60                         continue;
61                 if (fs &&
62                     ((blockno < fs->super->s_first_data_block) ||
63                     (blockno >= fs->super->s_blocks_count))) {
64                         if (invalid)
65                                 (invalid)(fs, blockno, buf, priv_data);
66                         continue;
67                 }
68                 retval = ext2fs_badblocks_list_add(*bb_list, blockno);
69                 if (retval)
70                         return retval;
71         }
72         return 0;
73 }
74
75 static void call_compat_invalid(ext2_filsys fs, blk_t blk,
76                                 char *badstr EXT2FS_ATTR((unused)),
77                                 void *priv_data)
78 {
79         void (*invalid)(ext2_filsys, blk_t);
80
81         invalid = (void (*)(ext2_filsys, blk_t)) priv_data;
82         if (invalid)
83                 invalid(fs, blk);
84 }
85
86
87 /*
88  * Reads a list of bad blocks from  a FILE *
89  */
90 errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f,
91                               ext2_badblocks_list *bb_list,
92                               void (*invalid)(ext2_filsys fs, blk_t blk))
93 {
94         return ext2fs_read_bb_FILE2(fs, f, bb_list, (void *) invalid,
95                                     call_compat_invalid);
96 }
97
98