source: MondoRescue/branches/2.2.5/mindi-busybox/coreutils/touch.c@ 1765

/* vi: set sw=4 ts=4: */
/*
 * Mini touch implementation for busybox
 *
 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

/* 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 "libbb.h"

/* This is a NOFORK applet. Be very careful! */

int touch_main(int argc, char **argv);
int touch_main(int argc, char **argv)
{
    int fd;
    int status = EXIT_SUCCESS;
    int flags = getopt32(argv, "c");

    argv += optind;

    if (!*argv) {
        bb_show_usage();
    }

    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;
}