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f81b4636 WJ |
1 | /* |
2 | * Copyright (c) 1981, 1983 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | char copyright[] = | |
36 | "@(#) Copyright (c) 1981, 1983 The Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)badsect.c 5.9 (Berkeley) 6/1/90"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | /* | |
45 | * badsect | |
46 | * | |
47 | * Badsect takes a list of file-system relative sector numbers | |
48 | * and makes files containing the blocks of which these sectors are a part. | |
49 | * It can be used to contain sectors which have problems if these sectors | |
50 | * are not part of the bad file for the pack (see bad144). For instance, | |
51 | * this program can be used if the driver for the file system in question | |
52 | * does not support bad block forwarding. | |
53 | */ | |
54 | #include <sys/param.h> | |
55 | #include <sys/dir.h> | |
56 | #include <sys/stat.h> | |
57 | #include <ufs/fs.h> | |
58 | #include <ufs/dinode.h> | |
59 | #include <stdio.h> | |
60 | #include <paths.h> | |
61 | ||
62 | union { | |
63 | struct fs fs; | |
64 | char fsx[SBSIZE]; | |
65 | } ufs; | |
66 | #define sblock ufs.fs | |
67 | union { | |
68 | struct cg cg; | |
69 | char cgx[MAXBSIZE]; | |
70 | } ucg; | |
71 | #define acg ucg.cg | |
72 | struct fs *fs; | |
73 | int fso, fsi; | |
74 | int errs; | |
75 | long dev_bsize = 1; | |
76 | ||
77 | char buf[MAXBSIZE]; | |
78 | ||
79 | ||
80 | main(argc, argv) | |
81 | int argc; | |
82 | char *argv[]; | |
83 | { | |
84 | daddr_t number; | |
85 | struct stat stbuf, devstat; | |
86 | register struct direct *dp; | |
87 | DIR *dirp; | |
88 | int fd; | |
89 | char name[BUFSIZ]; | |
90 | ||
91 | if (argc < 3) { | |
92 | fprintf(stderr, "usage: badsect bbdir blkno [ blkno ]\n"); | |
93 | exit(1); | |
94 | } | |
95 | if (chdir(argv[1]) < 0 || stat(".", &stbuf) < 0) { | |
96 | perror(argv[1]); | |
97 | exit(2); | |
98 | } | |
99 | strcpy(name, _PATH_DEV); | |
100 | if ((dirp = opendir(name)) == NULL) { | |
101 | perror(name); | |
102 | exit(3); | |
103 | } | |
104 | while ((dp = readdir(dirp)) != NULL) { | |
105 | strcpy(&name[5], dp->d_name); | |
106 | if (stat(name, &devstat) < 0) { | |
107 | perror(name); | |
108 | exit(4); | |
109 | } | |
110 | if (stbuf.st_dev == devstat.st_rdev && | |
111 | (devstat.st_mode & IFMT) == IFBLK) | |
112 | break; | |
113 | } | |
114 | closedir(dirp); | |
115 | if (dp == NULL) { | |
116 | printf("Cannot find dev 0%o corresponding to %s\n", | |
117 | stbuf.st_rdev, argv[1]); | |
118 | exit(5); | |
119 | } | |
120 | if ((fsi = open(name, 0)) < 0) { | |
121 | perror(name); | |
122 | exit(6); | |
123 | } | |
124 | fs = &sblock; | |
125 | rdfs(SBOFF, SBSIZE, (char *)fs); | |
126 | dev_bsize = fs->fs_fsize / fsbtodb(fs, 1); | |
127 | for (argc -= 2, argv += 2; argc > 0; argc--, argv++) { | |
128 | number = atoi(*argv); | |
129 | if (chkuse(number, 1)) | |
130 | continue; | |
131 | if (mknod(*argv, IFMT|0600, dbtofsb(fs, number)) < 0) { | |
132 | perror(*argv); | |
133 | errs++; | |
134 | } | |
135 | } | |
136 | printf("Don't forget to run ``fsck %s''\n", name); | |
137 | exit(errs); | |
138 | } | |
139 | ||
140 | chkuse(blkno, cnt) | |
141 | daddr_t blkno; | |
142 | int cnt; | |
143 | { | |
144 | int cg; | |
145 | daddr_t fsbn, bn; | |
146 | ||
147 | fsbn = dbtofsb(fs, blkno); | |
148 | if ((unsigned)(fsbn+cnt) > fs->fs_size) { | |
149 | printf("block %d out of range of file system\n", blkno); | |
150 | return (1); | |
151 | } | |
152 | cg = dtog(fs, fsbn); | |
153 | if (fsbn < cgdmin(fs, cg)) { | |
154 | if (cg == 0 || (fsbn+cnt) > cgsblock(fs, cg)) { | |
155 | printf("block %d in non-data area: cannot attach\n", | |
156 | blkno); | |
157 | return (1); | |
158 | } | |
159 | } else { | |
160 | if ((fsbn+cnt) > cgbase(fs, cg+1)) { | |
161 | printf("block %d in non-data area: cannot attach\n", | |
162 | blkno); | |
163 | return (1); | |
164 | } | |
165 | } | |
166 | rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)sblock.fs_cgsize, | |
167 | (char *)&acg); | |
168 | if (!cg_chkmagic(&acg)) { | |
169 | fprintf(stderr, "cg %d: bad magic number\n", cg); | |
170 | errs++; | |
171 | return (1); | |
172 | } | |
173 | bn = dtogd(fs, fsbn); | |
174 | if (isclr(cg_blksfree(&acg), bn)) | |
175 | printf("Warning: sector %d is in use\n", blkno); | |
176 | return (0); | |
177 | } | |
178 | ||
179 | /* | |
180 | * read a block from the file system | |
181 | */ | |
182 | rdfs(bno, size, bf) | |
183 | int bno, size; | |
184 | char *bf; | |
185 | { | |
186 | int n; | |
187 | ||
188 | if (lseek(fsi, bno * dev_bsize, 0) < 0) { | |
189 | printf("seek error: %ld\n", bno); | |
190 | perror("rdfs"); | |
191 | exit(1); | |
192 | } | |
193 | n = read(fsi, bf, size); | |
194 | if(n != size) { | |
195 | printf("read error: %ld\n", bno); | |
196 | perror("rdfs"); | |
197 | exit(1); | |
198 | } | |
199 | } |