1: /*
2: * Copyright (c) 1998 Niklas Hallqvist, Tobias Weingartner
3: * Copyright (c) 2002, 2003 Robert Watson, Michael Ranner
4: * Copyright (c) 2004 Michael Ranner
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: *
16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26: */
27:
28: #include <sys/types.h>
29: #include <sys/param.h>
30: #include <sys/fcntl.h>
31: #include <ufs/ufs/dinode.h>
32: #include <ufs/ffs/fs.h>
33: #include <unistd.h>
34: #include <stdlib.h>
35: #include <stdio.h>
36: #include <string.h>
37: #include <time.h>
38: #include <err.h>
39: #if 0
40: #include <util.h>
41: #endif
42:
43: #if __FreeBSD_version < 500037
44: #include "scan_ffs_freebsd5.h"
45: #endif
46:
47: #if __FreeBSD_version >= 500037
48: #define SBSIZE SBLOCKSIZE
49: #endif
50: #define SBCOUNT 64 /* XXX - Should be configurable */
51:
52: /* Flags to control ourselves... */
53: #define FLAG_VERBOSE 1
54: #define FLAG_SMART 2
55: #define FLAG_LABELS 4
56:
57: static void usage(void);
58:
59: static int
60: ufsscan(int fd, daddr_t beg, daddr_t end, int flags)
61: {
62: static char lastmount[MAXMNTLEN];
63: static u_int8_t buf[SBSIZE * SBCOUNT];
64: struct fs *sb;
65: daddr_t blk, lastblk;
66: int n;
67: int ufs;
68:
69: lastblk = -1;
70: memset(lastmount, 0, MAXMNTLEN);
71:
72: for (blk = beg; blk <= ((end<0)?blk:end); blk += (SBCOUNT*SBSIZE/512)){
73: memset(buf, 0, SBSIZE * SBCOUNT);
74: if (lseek(fd, (off_t)blk * 512, SEEK_SET) < 0)
75: err(1, "lseek");
76: if (read(fd, buf, SBSIZE * SBCOUNT) < 0)
77: err(1, "read");
78:
79: for (n = 0; n < (SBSIZE * SBCOUNT); n += 512){
80: ufs = 0;
81: sb = (struct fs*)(&buf[n]);
82:
83: if (sb->fs_magic == FS_UFS1_MAGIC)
84: ufs = 1;
85: #if __FreeBSD_version >= 500037
86: if (sb->fs_magic == FS_UFS2_MAGIC)
87: ufs = 2;
88: #endif
89:
90: if (ufs > 0) {
91: #if __FreeBSD_version >= 500037
92: if (ufs == 1) sb->fs_size = sb->fs_old_size;
93: #endif
94: if (flags & FLAG_VERBOSE)
95: #if __FreeBSD_version >= 500037
96: printf("block %lld id %x,%x size %lld\n",
97: #else
98: printf("block %d id %x,%x size %d\n",
99: #endif
100: blk + (n/512), sb->fs_id[0],
101: sb->fs_id[1], sb->fs_size);
102:
103: if (((blk+(n/512)) - lastblk) == (SBSIZE*ufs/512)) {
104: if (flags & FLAG_LABELS ) {
105: #if __FreeBSD_version >= 500037
106: printf("X: %lld %lld 4.2BSD %ld %ld %ld # %s\n",
107: #else
108: printf("X: %d %d 4.2BSD %d %d %d # %s\n",
109: #endif
110: (daddr_t)((off_t)sb->fs_size *
111: sb->fs_fsize / 512),
112: blk+(n/(512))-(2*SBSIZE/512)-((ufs-1)*SBLOCK_UFS2/512),
113: sb->fs_fsize, sb->fs_bsize,
114: #if __FreeBSD_version < 500037
115: sb->fs_cpg, lastmount);
116: #else
117: sb->fs_old_cpg, lastmount);
118: #endif
119: } else {
120: #if __FreeBSD_version >= 500037
121: printf("ufs%d at %lld size %lld mount %s time %s\n",
122: #else
123: printf("ufs%d at %d size %d mount %s time %s\n",
124: #endif
125: ufs,
126: blk+(n/(512))-(2*SBSIZE/512)-((ufs-1)*SBLOCK_UFS2/512),
127: sb->fs_size,
128: lastmount, ctime((time_t *)&sb->fs_time));
129: }
130:
131: if (flags & FLAG_SMART) {
132: off_t size = (off_t)sb->fs_size *
133: sb->fs_fsize;
134:
135: if ((n + size) < (SBSIZE * SBCOUNT))
136: n += size;
137: else {
138: blk += (size/512) - (SBCOUNT * SBCOUNT);
139: break;
140: }
141: }
142: }
143:
144: /* Update last potential FS SBs seen */
145: lastblk = blk + (n/512);
146: memcpy(lastmount, sb->fs_fsmnt, MAXMNTLEN);
147: }
148: }
149: }
150: return(0);
151: }
152:
153:
154: static void
155: usage(void)
156: {
157: extern char *__progname;
158:
159: fprintf(stderr, "usage: %s [-lsv] [-b begin] [-e end] device\n",
160: __progname);
161: exit(1);
162: }
163:
164:
165: int
166: main(int argc, char *argv[])
167: {
168: char *name;
169: int ch, fd, flags = 0;
170: daddr_t beg = 0, end = -1;
171:
172: while ((ch = getopt(argc, argv, "lsvb:e:")) != -1)
173: switch(ch) {
174: case 'b':
175: beg = atoi(optarg);
176: break;
177: case 'e':
178: end = atoi(optarg);
179: break;
180: case 'v':
181: flags |= FLAG_VERBOSE;
182: break;
183: case 's':
184: flags |= FLAG_SMART;
185: break;
186: case 'l':
187: flags |= FLAG_LABELS;
188: break;
189: default:
190: usage();
191: /* NOTREACHED */
192: }
193: argc -= optind;
194: argv += optind;
195:
196: if (argc != 1)
197: usage();
198:
199: if (argv[0][0] != '/') {
200: if (asprintf(&name, "/dev/%s", argv[0]) == -1)
201: err(1, "%s", argv[1]);
202: } else
203: name = argv[0];
204: fd = open(name, O_RDONLY);
205: if (fd < 0)
206: err(1, "%s", argv[0]);
207: if (name != argv[0])
208: free(name);
209:
210: return (ufsscan(fd, beg, end, flags));
211: }
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