usr.bin/mkfifo/mkfifo.c

   1 /*      $NetBSD: mkfifo.c,v 1.11 2005/10/01 20:26:26 christos 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\
  35  The Regents of the University of California.  All rights reserved.");
  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 1.11 2005/10/01 20:26:26 christos 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                                 err(1, "Cannot set file mode `%s'", optarg);
  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 }