/*
* Mini touch implementation for busybox
*
- *
- * Copyright (C) 1999,2000 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.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
*
*/
-#include "internal.h"
+/* BB_AUDIT SUSv3 _NOT_ compliant -- options -a, -m, -r, -t not supported. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/touch.html */
+
+/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
+ *
+ * Previous version called open() and then utime(). While this will be
+ * be necessary to implement -r and -t, it currently only makes things bigger.
+ * Also, exiting on a failure was a bug. All args should be processed.
+ */
+
#include <stdio.h>
#include <sys/types.h>
-#include <sys/stat.h>
#include <fcntl.h>
#include <utime.h>
#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include "busybox.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 touch_main(int argc, char **argv)
{
int fd;
- int create = TRUE;
+ int flags;
+ int status = EXIT_SUCCESS;
- /* Parse options */
- while (--argc > 0 && **(++argv) == '-') {
- while (*(++(*argv))) {
- switch (**argv) {
- case 'c':
- create = FALSE;
- break;
- default:
- usage(touch_usage);
- exit(FALSE);
- }
- }
- }
+ flags = bb_getopt_ulflags(argc, argv, "c");
+
+ argv += optind;
- if (argc < 1) {
- usage(touch_usage);
+ if (!*argv) {
+ bb_show_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);
+ do {
if (utime(*argv, NULL)) {
- fatalError("touch: %s", strerror(errno));
+ if (errno == ENOENT) { /* no such file*/
+ if (flags & 1) { /* Creation is disabled, so ignore. */
+ continue;
+ }
+ /* Try to create the file. */
+ fd = open(*argv, O_RDWR | O_CREAT,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH
+ );
+ if ((fd >= 0) && !close(fd)) {
+ continue;
+ }
+ }
+ status = EXIT_FAILURE;
+ bb_perror_msg("%s", *argv);
}
- argc--;
- argv++;
- }
+ } while (*++argv);
- return(TRUE);
+ return status;
}