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mkfifo.c revision 1.10 
      1 /*	$NetBSD: mkfifo.c,v 1.10 2003/08/07 11:15:13 agc Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 __COPYRIGHT("@(#) Copyright (c) 1990, 1993\n\
     35 	The Regents of the University of California.  All rights reserved.\n");
     36 #endif /* not lint */
     37 
     38 #ifndef lint
     39 #if 0
     40 static char sccsid[] = "@(#)mkfifo.c	8.2 (Berkeley) 1/5/94";
     41 #endif
     42 __RCSID("$NetBSD: mkfifo.c,v 1.10 2003/08/07 11:15:13 agc Exp $");
     43 #endif /* not lint */
     44 
     45 #include <stdio.h>
     46 #include <stdlib.h>
     47 #include <string.h>
     48 #include <locale.h>
     49 #include <errno.h>
     50 #include <sys/types.h>
     51 #include <sys/stat.h>
     52 #include <unistd.h>
     53 #include <err.h>
     54 
     55 int	main __P((int, char **));
     56 static void usage __P((void));
     57 
     58 int
     59 main(argc, argv)
     60 	int argc;
     61 	char *argv[];
     62 {
     63 	int ch, exitval;
     64 	void *set;
     65 	mode_t mode;
     66 
     67 	setlocale (LC_ALL, "");
     68 
     69 	/* The default mode is the value of the bitwise inclusive or of
     70 	   S_IRUSR, S_IWUSR, S_IRGRP, S_IWGRP, S_IROTH, and S_IWOTH
     71 	   modified by the file creation mask */
     72 	mode = 0666 & ~umask(0);
     73 
     74 	while ((ch = getopt(argc, argv, "m:")) != -1)
     75 		switch(ch) {
     76 		case 'm':
     77 			if (!(set = setmode(optarg))) {
     78 				errx(1, "invalid file mode.");
     79 				/* NOTREACHED */
     80 			}
     81 			/* In symbolic mode strings, the + and - operators are
     82 			   interpreted relative to an assumed initial mode of
     83 			   a=rw. */
     84 			mode = getmode(set, 0666);
     85 			free(set);
     86 			break;
     87 		case '?':
     88 		default:
     89 			usage();
     90 		}
     91 	argc -= optind;
     92 	argv += optind;
     93 	if (argv[0] == NULL)
     94 		usage();
     95 
     96 	for (exitval = 0; *argv; ++argv) {
     97 		if (mkfifo(*argv, mode) < 0) {
     98 			warn("%s", *argv);
     99 			exitval = 1;
    100 		}
    101 	}
    102 	exit(exitval);
    103 }
    104 
    105 void
    106 usage()
    107 {
    108 	(void)fprintf(stderr, "usage: mkfifo [-m mode] fifoname ...\n");
    109 	exit(1);
    110 }
    111