mkfifo.c revision 92921 
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
44static const char rcsid[] =
45  "$FreeBSD: head/usr.bin/mkfifo/mkfifo.c 92921 2002-03-22 01:33:25Z imp $";
46#endif /* not lint */
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(argc, argv)
67	int argc;
68	char *argv[];
69{
70	char *modestr;
71	void *modep;
72	mode_t fifomode;
73	int ch, exitval;
74
75	while ((ch = getopt(argc, argv, "m:")) != -1)
76		switch(ch) {
77		case 'm':
78			f_mode = 1;
79			modestr = optarg;
80			break;
81		case '?':
82		default:
83			usage();
84		}
85	argc -= optind;
86	argv += optind;
87	if (argv[0] == NULL)
88		usage();
89
90	if (f_mode) {
91		umask(0);
92		errno = 0;
93		if ((modep = setmode(modestr)) == NULL) {
94			if (errno)
95				err(1, "setmode");
96			errx(1, "invalid file mode: %s", modestr);
97		}
98		fifomode = getmode(modep, BASEMODE);
99	} else {
100		fifomode = BASEMODE;
101	}
102
103	for (exitval = 0; *argv != NULL; ++argv)
104		if (mkfifo(*argv, fifomode) < 0) {
105			warn("%s", *argv);
106			exitval = 1;
107		}
108	exit(exitval);
109}
110
111static void
112usage()
113{
114	(void)fprintf(stderr, "usage: mkfifo [-m mode] fifo_name ...\n");
115	exit(1);
116}
117