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