mkfifo/mkfifo.c

   1 /*      $NetBSD: mkfifo.c,v 1.8 1997/10/19 05:11:54 lukem 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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 #ifndef lint
  38 __COPYRIGHT("@(#) Copyright (c) 1990, 1993\n\
  39         The Regents of the University of California.  All rights reserved.\n");
  40 #endif /* not lint */
  41
  42 #ifndef lint
  43 #if 0
  44 static char sccsid[] = "@(#)mkfifo.c    8.2 (Berkeley) 1/5/94";
  45 #endif
  46 __RCSID("$NetBSD: mkfifo.c,v 1.8 1997/10/19 05:11:54 lukem Exp $");
  47 #endif /* not lint */
  48
  49 #include <stdio.h>
  50 #include <stdlib.h>
  51 #include <string.h>
  52 #include <locale.h>
  53 #include <errno.h>
  54 #include <sys/types.h>
  55 #include <sys/stat.h>
  56 #include <unistd.h>
  57 #include <err.h>
  58
  59 int     main __P((int, char **));
  60 static void usage __P((void));
  61
  62 int
  63 main(argc, argv)
  64         int argc;
  65         char *argv[];
  66 {
  67         int ch, exitval;
  68         void * set;
  69         mode_t mode;
  70
  71         setlocale (LC_ALL, "");
  72
  73         /* The default mode is the value of the bitwise inclusive or of
  74            S_IRUSR, S_IWUSR, S_IRGRP, S_IWGRP, S_IROTH, and S_IWOTH
  75            modified by the file creation mask */
  76         mode = 0666 & ~umask(0);
  77
  78         while ((ch = getopt(argc, argv, "m:")) != -1)
  79                 switch(ch) {
  80                 case 'm':
  81                         if (!(set = setmode(optarg))) {
  82                                 errx(1, "invalid file mode.");
  83                                 /* NOTREACHED */
  84                         }
  85                         /* In symbolic mode strings, the + and - operators are
  86                            interpreted relative to an assumed initial mode of
  87                            a=rw. */
  88                         mode = getmode (set, 0666);
  89                         break;
  90                 case '?':
  91                 default:
  92                         usage();
  93                 }
  94         argc -= optind;
  95         argv += optind;
  96         if (argv[0] == NULL)
  97                 usage();
  98
  99         for (exitval = 0; *argv; ++argv) {
 100                 if (mkfifo(*argv, mode) < 0) {
 101                         warn("%s", *argv);
 102                         exitval = 1;
 103                 }
 104         }
 105         exit(exitval);
 106 }
 107
 108 void
 109 usage()
 110 {
 111         (void)fprintf(stderr, "usage: mkfifo [-m mode] fifoname ...\n");
 112         exit(1);
 113 }