+/* vi: set sw=4 ts=4: */
/*
* Mini touch implementation for busybox
*
- * Copyright (C) 1998 by Erik Andersen <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\n"
-"\tUpdate the last-modified date on the given file[s].\n";
-
-
-
-extern int
-touch_main(int argc, char **argv)
+extern int touch_main(int argc, char **argv)
{
- int fd;
- int create=TRUE;
+ int fd;
+ int flags;
+ int status = EXIT_SUCCESS;
- if (argc < 2) {
- usage( touch_usage);
- }
- argc--;
- argv++;
+ flags = bb_getopt_ulflags(argc, argv, "c");
- /* Parse options */
- while (**argv == '-') {
- while (*++(*argv)) switch (**argv) {
- case 'c':
- create = FALSE;
- break;
- default:
- fprintf(stderr, "Unknown option: %c\n", **argv);
- exit( FALSE);
- }
- argc--;
- argv++;
- }
+ argv += optind;
- fd = open (*argv, (create==FALSE)? O_RDWR : O_RDWR | O_CREAT, 0644);
- if (fd < 0 ) {
- if (create==FALSE && errno == ENOENT)
- exit( TRUE);
- else {
- perror("touch");
- exit( FALSE);
+ if (!*argv) {
+ bb_show_usage();
}
- }
- close( fd);
- if (utime (*argv, NULL)) {
- perror("touch");
- exit( FALSE);
- }
- else
- exit( TRUE);
-}
-
-
-
-
+ do {
+ if (utime(*argv, NULL)) {
+ 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);
+ }
+ } while (*++argv);
+ return status;
+}