/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1990, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/stat.h>

#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define BASEMODE        S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | \
                        S_IROTH | S_IWOTH

static void usage(void) __dead2;

static int f_mode;

int
main(int argc, char *argv[])
{
        const char *modestr = NULL;
        const void *modep;
        mode_t fifomode;
        int ch, exitval;

        while ((ch = getopt(argc, argv, "m:")) != -1)
                switch(ch) {
                case 'm':
                        f_mode = 1;
                        modestr = optarg;
                        break;
                case '?':
                default:
                        usage();
                }
        argc -= optind;
        argv += optind;
        if (argv[0] == NULL)
                usage();

        if (f_mode) {
                umask(0);
                errno = 0;
                if ((modep = setmode(modestr)) == NULL) {
                        if (errno)
                                err(1, "setmode");
                        errx(1, "invalid file mode: %s", modestr);
                }
                fifomode = getmode(modep, BASEMODE);
        } else {
                fifomode = BASEMODE;
        }

        for (exitval = 0; *argv != NULL; ++argv)
                if (mkfifo(*argv, fifomode) < 0) {
                        warn("%s", *argv);
                        exitval = 1;
                }
        exit(exitval);
}

static void
usage(void)
{
        (void)fprintf(stderr, "usage: mkfifo [-m mode] fifo_name ...\n");
        exit(1);
}