- add libbb function str_tolower to convert a string to lowercase.

[oweals/busybox.git] / coreutils / touch.c

diff --git a/coreutils/touch.c b/coreutils/touch.c
index d882a63193192357bab41a67d7671cd374eb3090..5f81b2380858dd9086e3c43b06be775c71ace2b0 100644 (file)
--- a/coreutils/touch.c
+++ b/coreutils/touch.c
@@ -1,84 +1,57 @@
+/* vi: set sw=4 ts=4: */
 /*
  * Mini touch implementation for busybox
  *
- * Copyright (C) 1998 by Erik Andersen <andersee@debian.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
- * 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
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
-#include "internal.h"
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <utime.h>
-#include <errno.h>
-
+/* BB_AUDIT SUSv3 _NOT_ compliant -- options -a, -m, -r, -t not supported. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/touch.html */
 
-static const char touch_usage[] = "touch [-c] file [file ...]\n\n"
-"\tUpdate the last-modified date on the given file[s].\n";
+/* 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 "busybox.h"
 
+/* This is a NOFORK applet. Be very careful! */
 
-extern int 
-touch_main(int argc, char **argv)
+int touch_main(int argc, char **argv);
+int touch_main(int argc, char **argv)
 {
-    int fd;
-    int create=TRUE;
+       int fd;
+       int status = EXIT_SUCCESS;
+       int flags = getopt32(argc, argv, "c");
 
-    if (argc < 2) {
-       usage( touch_usage);
-    }
-    argc--;
-    argv++;
+       argv += optind;
 
-    /* Parse options */
-    while (**argv == '-') {
-       while (*++(*argv)) switch (**argv) {
-           case 'c':
-               create = FALSE;
-               break;
-           default:
-               fprintf(stderr, "Unknown option: %c\n", **argv);
-               exit( FALSE);
+       if (!*argv) {
+               bb_show_usage();
        }
-       argc--;
-       argv++;
-    }
 
-    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);
-       }
-    }
-    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) {    /* 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;
 }
-
-
-
-
-
-