[1108] | 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 | } |
---|