| /* vi: set sw=4 ts=4: */ |
| /* |
| * Mini touch implementation for busybox |
| * |
| * |
| * Copyright (C) 1999,2000 by Lineo, inc. |
| * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| */ |
| |
| #include "internal.h" |
| #include <stdio.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <utime.h> |
| #include <errno.h> |
| |
| |
| static const char touch_usage[] = "touch [-c] file [file ...]\n" |
| #ifndef BB_FEATURE_TRIVIAL_HELP |
| "\nUpdate the last-modified date on the given file[s].\n\n" |
| "Options:\n" |
| "\t-c\tDo not create any files\n" |
| #endif |
| ; |
| |
| |
| extern int touch_main(int argc, char **argv) |
| { |
| int fd; |
| int create = TRUE; |
| |
| /* Parse options */ |
| while (--argc > 0 && **(++argv) == '-') { |
| while (*(++(*argv))) { |
| switch (**argv) { |
| case 'c': |
| create = FALSE; |
| break; |
| default: |
| usage(touch_usage); |
| exit(FALSE); |
| } |
| } |
| } |
| |
| if (argc < 1) { |
| usage(touch_usage); |
| } |
| |
| while (argc > 0) { |
| fd = open(*argv, (create == FALSE) ? O_RDWR : O_RDWR | O_CREAT, |
| S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH); |
| if (fd < 0) { |
| if (create == FALSE && errno == ENOENT) |
| exit(TRUE); |
| else { |
| fatalError("touch: %s", strerror(errno)); |
| } |
| } |
| close(fd); |
| if (utime(*argv, NULL)) { |
| fatalError("touch: %s", strerror(errno)); |
| } |
| argc--; |
| argv++; |
| } |
| |
| exit(TRUE); |
| } |