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63 lines
1.5 KiB
C
63 lines
1.5 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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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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/* BB_AUDIT SUSv3 _NOT_ compliant -- options -a, -m, -r, -t not supported. */
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/* http://www.opengroup.org/onlinepubs/007904975/utilities/touch.html */
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/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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*
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* Previous version called open() and then utime(). While this will be
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* be necessary to implement -r and -t, it currently only makes things bigger.
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* Also, exiting on a failure was a bug. All args should be processed.
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*/
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#include <stdio.h>
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#include <sys/types.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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#include <unistd.h>
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#include <stdlib.h>
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#include "busybox.h"
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int touch_main(int argc, char **argv);
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int touch_main(int argc, char **argv)
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{
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int fd;
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int status = EXIT_SUCCESS;
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bool flags = (getopt32(argc, argv, "c") & 1);
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argv += optind;
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if (!*argv) {
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bb_show_usage();
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}
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do {
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if (utime(*argv, NULL)) {
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if (errno == ENOENT) { /* no such file*/
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if (flags) { /* Creation is disabled, so ignore. */
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continue;
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}
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/* Try to create the file. */
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fd = open(*argv, O_RDWR | O_CREAT,
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S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH
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);
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if ((fd >= 0) && !close(fd)) {
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continue;
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}
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}
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status = EXIT_FAILURE;
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bb_perror_msg("%s", *argv);
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}
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} while (*++argv);
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return status;
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}
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