mkfifo.c revision 102944 
1/*
2 * Copyright (c) 1990, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static const char copyright[] =
36"@(#) Copyright (c) 1990, 1993\n\
37	The Regents of the University of California.  All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41#if 0
42static char sccsid[] = "@(#)mkfifo.c	8.2 (Berkeley) 1/5/94";
43#endif
44#endif /* not lint */
45#include <sys/cdefs.h>
46__FBSDID("$FreeBSD: head/usr.bin/mkfifo/mkfifo.c 102944 2002-09-04 23:29:10Z dwmalone $");
47
48#include <sys/types.h>
49#include <sys/stat.h>
50
51#include <err.h>
52#include <errno.h>
53#include <stdio.h>
54#include <stdlib.h>
55#include <string.h>
56#include <unistd.h>
57
58#define	BASEMODE	S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | \
59			S_IROTH | S_IWOTH
60
61static void usage(void);
62
63static int f_mode;
64
65int
66main(int argc, char *argv[])
67{
68	char *modestr;
69	void *modep;
70	mode_t fifomode;
71	int ch, exitval;
72
73	while ((ch = getopt(argc, argv, "m:")) != -1)
74		switch(ch) {
75		case 'm':
76			f_mode = 1;
77			modestr = optarg;
78			break;
79		case '?':
80		default:
81			usage();
82		}
83	argc -= optind;
84	argv += optind;
85	if (argv[0] == NULL)
86		usage();
87
88	if (f_mode) {
89		umask(0);
90		errno = 0;
91		if ((modep = setmode(modestr)) == NULL) {
92			if (errno)
93				err(1, "setmode");
94			errx(1, "invalid file mode: %s", modestr);
95		}
96		fifomode = getmode(modep, BASEMODE);
97	} else {
98		fifomode = BASEMODE;
99	}
100
101	for (exitval = 0; *argv != NULL; ++argv)
102		if (mkfifo(*argv, fifomode) < 0) {
103			warn("%s", *argv);
104			exitval = 1;
105		}
106	exit(exitval);
107}
108
109static void
110usage(void)
111{
112	(void)fprintf(stderr, "usage: mkfifo [-m mode] fifo_name ...\n");
113	exit(1);
114}
115