hush/coreutils/touch.c

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/* vi: set sw=4 ts=4: */
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/*
* Mini touch implementation for busybox
*
* Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen
* Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
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*
* 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
*
*/
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#include <stdio.h>
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#include <sys/types.h>
#include <fcntl.h>
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#include <utime.h>
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#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include "busybox.h"
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extern int touch_main(int argc, char **argv)
{
int fd;
int create = TRUE;
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/* Parse options */
while (--argc > 0 && **(++argv) == '-') {
while (*(++(*argv))) {
switch (**argv) {
case 'c':
create = FALSE;
break;
default:
show_usage();
}
}
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}
if (argc < 1) {
show_usage();
}
while (argc > 0) {
fd = open(*argv, create ? O_RDWR | O_CREAT : O_RDWR,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
if (fd < 0) {
if (! create && errno == ENOENT) {
argc--;
argv++;
continue;
} else {
perror_msg_and_die("%s", *argv);
}
}
close(fd);
if (utime(*argv, NULL)) {
perror_msg_and_die("%s", *argv);
}
argc--;
argv++;
}
return EXIT_SUCCESS;
}