]>
Commit | Line | Data |
---|---|---|
1 | /* fstab-decode(8). | |
2 | ||
3 | Copyright (c) 2006 Red Hat, Inc. All rights reserved. | |
4 | ||
5 | This copyrighted material is made available to anyone wishing to use, modify, | |
6 | copy, or redistribute it subject to the terms and conditions of the GNU General | |
7 | Public License v.2. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, but WITHOUT ANY | |
10 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A | |
11 | PARTICULAR PURPOSE. See the GNU General Public License for more details. | |
12 | ||
13 | You should have received a copy of the GNU General Public License along with | |
14 | this program; if not, write to the Free Software Foundation, Inc., 51 Franklin | |
15 | Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
16 | ||
17 | Author: Miloslav Trmac <mitr@redhat.com> */ | |
18 | ||
19 | #include <errno.h> | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <unistd.h> | |
24 | ||
25 | /* Decode the fstab-encoded string in place. */ | |
26 | static void | |
27 | decode(char *s) | |
28 | { | |
29 | const char *src; | |
30 | char *dest; | |
31 | ||
32 | src = s; | |
33 | dest = s; | |
34 | while (*src != '\0') { | |
35 | if (*src != '\\') | |
36 | *dest = *src++; | |
37 | else { | |
38 | static const struct repl { | |
39 | char orig[4]; | |
40 | size_t len; | |
41 | char new; | |
42 | } repls[] = { | |
43 | #define R(X, Y) { X, sizeof(X) - 1, Y } | |
44 | R("\\", '\\'), | |
45 | R("011", '\t'), | |
46 | R("012", '\n'), | |
47 | R("040", ' '), | |
48 | R("134", '\\') | |
49 | #undef R | |
50 | }; | |
51 | ||
52 | size_t i; | |
53 | ||
54 | for (i = 0; i < sizeof (repls) / sizeof (repls[0]); | |
55 | i++) { | |
56 | if (memcmp(src + 1, repls[i].orig, | |
57 | repls[i].len) == 0) { | |
58 | *dest = repls[i].new; | |
59 | src += 1 + repls[i].len; | |
60 | goto found; | |
61 | } | |
62 | } | |
63 | *dest = *src++; | |
64 | found: | |
65 | ; | |
66 | } | |
67 | dest++; | |
68 | } | |
69 | *dest = '\0'; | |
70 | } | |
71 | ||
72 | int | |
73 | main (int argc, char *argv[]) | |
74 | { | |
75 | size_t i; | |
76 | ||
77 | if (argc < 2) { | |
78 | fprintf(stderr, "Usage: fstab-decode command [arguments]\n"); | |
79 | return EXIT_FAILURE; | |
80 | } | |
81 | for (i = 2; i < (size_t)argc; i++) | |
82 | decode(argv[i]); | |
83 | execvp(argv[1], argv + 1); | |
84 | fprintf(stderr, "fstab-decode: %s: %s\n", argv[1], strerror(errno)); | |
85 | return 127; | |
86 | } |