blob: f52bb0284202ddea81bfa48a923c82f11b41493c [file] [log] [blame]
Erik Andersene49d5ec2000-02-08 19:58:47 +00001/* vi: set sw=4 ts=4: */
Eric Andersen596e5461999-10-07 08:30:23 +00002/*
3 * Mini touch implementation for busybox
4 *
Eric Andersenc4996011999-10-20 22:08:37 +00005 *
Erik Andersen61677fe2000-04-13 01:18:56 +00006 * Copyright (C) 1999,2000 by Lineo, inc.
Eric Andersenc4996011999-10-20 22:08:37 +00007 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
Eric Andersen596e5461999-10-07 08:30:23 +00008 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
Eric Andersencc8ed391999-10-05 16:24:54 +000024
Eric Andersen596e5461999-10-07 08:30:23 +000025#include "internal.h"
26#include <stdio.h>
27#include <sys/types.h>
28#include <sys/stat.h>
29#include <fcntl.h>
30#include <utime.h>
31#include <errno.h>
32
33
Erik Andersen7ab9c7e2000-05-12 19:41:47 +000034static const char touch_usage[] = "touch [-c] file [file ...]\n"
35#ifndef BB_FEATURE_TRIVIAL_HELP
Eric Andersen5a0a2aa2000-06-02 23:26:44 +000036 "\nUpdate the last-modified date on the given file[s].\n\n"
37 "Options:\n"
38 "\t-c\tDo not create any files\n"
Erik Andersen7ab9c7e2000-05-12 19:41:47 +000039#endif
40 ;
Eric Andersencc8ed391999-10-05 16:24:54 +000041
Eric Andersen596e5461999-10-07 08:30:23 +000042
Erik Andersene49d5ec2000-02-08 19:58:47 +000043extern int touch_main(int argc, char **argv)
Eric Andersencc8ed391999-10-05 16:24:54 +000044{
Erik Andersene49d5ec2000-02-08 19:58:47 +000045 int fd;
46 int create = TRUE;
Eric Andersen596e5461999-10-07 08:30:23 +000047
Erik Andersene49d5ec2000-02-08 19:58:47 +000048 /* Parse options */
Eric Andersen5a0a2aa2000-06-02 23:26:44 +000049 while (--argc > 0 && **(++argv) == '-') {
50 while (*(++(*argv))) {
Erik Andersene49d5ec2000-02-08 19:58:47 +000051 switch (**argv) {
52 case 'c':
53 create = FALSE;
54 break;
55 default:
56 usage(touch_usage);
57 exit(FALSE);
58 }
Eric Andersen5a0a2aa2000-06-02 23:26:44 +000059 }
60 }
61
62 if (argc < 1) {
63 usage(touch_usage);
64 }
65
66 while (argc > 0) {
67 fd = open(*argv, (create == FALSE) ? O_RDWR : O_RDWR | O_CREAT,
68 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
69 if (fd < 0) {
70 if (create == FALSE && errno == ENOENT)
71 exit(TRUE);
72 else {
73 fatalError("touch: %s", strerror(errno));
74 }
75 }
76 close(fd);
77 if (utime(*argv, NULL)) {
78 fatalError("touch: %s", strerror(errno));
79 }
Erik Andersene49d5ec2000-02-08 19:58:47 +000080 argc--;
81 argv++;
Eric Andersen596e5461999-10-07 08:30:23 +000082 }
Erik Andersene49d5ec2000-02-08 19:58:47 +000083
Eric Andersenb6106152000-06-19 17:25:40 +000084 return(TRUE);
Eric Andersencc8ed391999-10-05 16:24:54 +000085}