FreeCalypso > hg > freecalypso-sw

comparison ffstools/tiffs-rd/xtr.c @ 248:10afa4d39a7b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
tiffs xtr implemented
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Mon, 27 Jan 2014 07:20:53 +0000
parents
children 66a6f1652909
comparison
equal deleted inserted replaced
247:190121a34b3b 248:10afa4d39a7b
1 /*
2 * This C module implements the xtr command.
3 */
4
5 #include <sys/types.h>
6 #include <sys/file.h>
7 #include <stdio.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <strings.h>
11 #include <unistd.h>
12 #include "types.h"
13 #include "struct.h"
14 #include "globals.h"
15 #include "pathname.h"
16
17 static void
18 dump_head_chunk(fd, headino)
19 {
20 struct inode_info *inf = inode_info[headino];
21 struct chunkinfo chi;
22
23 if (size_head_chunk(inf, &chi))
24 write(fd, chi.start, chi.len);
25 }
26
27 static void
28 dump_extra_chunk(inf, opaque)
29 struct inode_info *inf;
30 u_long opaque;
31 {
32 int fd = (int)opaque;
33 struct chunkinfo chi;
34
35 size_extra_chunk(inf, &chi);
36 write(fd, chi.start, chi.len);
37 }
38
39 extract_file(relpath, headino)
40 char *relpath;
41 {
42 int fd;
43
44 fd = open(relpath, O_WRONLY|O_CREAT|O_TRUNC, 0666);
45 if (fd < 0) {
46 perror(relpath);
47 exit(1);
48 }
49 dump_head_chunk(fd, headino);
50 iterate_seg_file(headino, dump_extra_chunk, (u_long)fd, 0, 0);
51 close(fd);
52 }
53
54 void
55 xtr_tree_callback(pathname, ino, depth)
56 char *pathname;
57 {
58 struct inode_info *inf = inode_info[ino];
59
60 switch (inf->type) {
61 case 0xE1:
62 case 0xF1:
63 extract_file(pathname + 1, ino);
64 return;
65 case 0xE2:
66 case 0xF2:
67 if (mkdir(pathname + 1, 0777) < 0) {
68 perror(pathname + 1);
69 exit(1);
70 }
71 return;
72 case 0xE3:
73 case 0xF3:
74 fprintf(stderr,
75 "symlink at %s ignored: symlink extraction not implemented yet\n",
76 pathname);
77 return;
78 default:
79 fprintf(stderr,
80 "BUG: bad inode byte %02X reached xtr_tree_callback()\n",
81 inf->type);
82 exit(1);
83 }
84 }
85
86 cmd_xtr(argc, argv)
87 char **argv;
88 {
89 if (argc != 2) {
90 fprintf(stderr, "usage: xtr dest-dir\n");
91 exit(1);
92 }
93 read_ffs_image();
94 find_inode_block();
95 alloc_inode_table();
96 find_root_inode();
97 if (chdir(argv[1]) < 0) {
98 perror(argv[1]);
99 exit(1);
100 }
101 traverse_visible_tree(xtr_tree_callback);
102 exit(0);
103 }