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DEFINITIONS
This source file includes following definitions.
- dumpsb
- dodirblock
- dumpdir
- dumpbits
- main
1 /*
2 * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
3 * The President and Fellows of Harvard College.
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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/types.h>
31 #include <stdint.h>
32 #include <string.h>
33 #include <stdio.h>
34 #include <assert.h>
35 #include <limits.h>
36 #include <err.h>
37
38 #include "support.h"
39 #include "kern/sfs.h"
40
41
42 #ifdef HOST
43
44 #include <netinet/in.h> // for arpa/inet.h
45 #include <arpa/inet.h> // for ntohl
46 #include "hostcompat.h"
47 #define SWAPL(x) ntohl(x)
48 #define SWAPS(x) ntohs(x)
49
50 #else
51
52 #define SWAPL(x) (x)
53 #define SWAPS(x) (x)
54
55 #endif
56
57 #include "disk.h"
58
59 static
60 uint32_t
61 dumpsb(void)
62 {
63 struct sfs_super sp;
64 diskread(&sp, SFS_SB_LOCATION);
65 if (SWAPL(sp.sp_magic) != SFS_MAGIC) {
66 errx(1, "Not an sfs filesystem");
67 }
68 sp.sp_volname[sizeof(sp.sp_volname)-1] = 0;
69 printf("Volume name: %-40s %u blocks\n", sp.sp_volname,
70 SWAPL(sp.sp_nblocks));
71
72 return SWAPL(sp.sp_nblocks);
73 }
74
75 static
76 void
77 dodirblock(uint32_t block)
78 {
79 struct sfs_dir sds[SFS_BLOCKSIZE/sizeof(struct sfs_dir)];
80 int nsds = SFS_BLOCKSIZE/sizeof(struct sfs_dir);
81 int i;
82
83 diskread(&sds, block);
84
85 printf(" [block %u]\n", block);
86 for (i=0; i<nsds; i++) {
87 uint32_t ino = SWAPL(sds[i].sfd_ino);
88 if (ino==SFS_NOINO) {
89 printf(" [free entry]\n");
90 }
91 else {
92 sds[i].sfd_name[SFS_NAMELEN-1] = 0; /* just in case */
93 printf(" %u %s\n", ino, sds[i].sfd_name);
94 }
95 }
96 }
97
98 static
99 void
100 dumpdir(uint32_t ino)
101 {
102 struct sfs_inode sfi;
103 uint32_t ib[SFS_DBPERIDB];
104 int nentries, i;
105 uint32_t block, nblocks=0;
106
107 diskread(&sfi, ino);
108
109 nentries = SWAPL(sfi.sfi_size) / sizeof(struct sfs_dir);
110 if (SWAPL(sfi.sfi_size) % sizeof(struct sfs_dir) != 0) {
111 warnx("Warning: dir size is not a multiple of dir entry size");
112 }
113 printf("Directory %u: %d entries\n", ino, nentries);
114
115 for (i=0; i<SFS_NDIRECT; i++) {
116 block = SWAPL(sfi.sfi_direct[i]);
117 if (block) {
118 dodirblock(block);
119 nblocks++;
120 }
121 }
122 if (SWAPL(sfi.sfi_indirect)) {
123 diskread(&ib, SWAPL(sfi.sfi_indirect));
124 for (i=0; i<SFS_DBPERIDB; i++) {
125 block = SWAPL(ib[i]);
126 if (block) {
127 dodirblock(block);
128 nblocks++;
129 }
130 }
131 }
132 printf(" %u blocks in directory\n", nblocks);
133 }
134
135 static
136 void
137 dumpbits(uint32_t fsblocks)
138 {
139 uint32_t nblocks = SFS_BITBLOCKS(fsblocks);
140 uint32_t i, j;
141 char data[SFS_BLOCKSIZE];
142
143 printf("Freemap: %u blocks (%u %u %u)\n", nblocks, SFS_BITMAPSIZE(fsblocks), fsblocks, SFS_BLOCKBITS);
144
145 for (i=0; i<nblocks; i++) {
146 diskread(data, SFS_MAP_LOCATION+i);
147 for (j=0; j<SFS_BLOCKSIZE; j++) {
148 printf("%02x", (unsigned char)data[j]);
149 if (j%32==31) {
150 printf("\n");
151 }
152 }
153 }
154 printf("\n");
155 }
156
157 int
158 main(int argc, char **argv)
159 {
160 uint32_t nblocks;
161
162 #ifdef HOST
163 hostcompat_init(argc, argv);
164 #endif
165
166 if (argc!=2) {
167 errx(1, "Usage: dumpsfs device/diskfile");
168 }
169
170 opendisk(argv[1]);
171 nblocks = dumpsb();
172 dumpbits(nblocks);
173 dumpdir(SFS_ROOT_LOCATION);
174
175 closedisk();
176
177 return 0;
178 }