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mkfifo.c revision 1.1 
      1 /*
      2  * Copyright (c) 1990 Regents of the University of California.
      3  * 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
     35 char copyright[] =
     36 "@(#) Copyright (c) 1990 Regents of the University of California.\n\
     37  All rights reserved.\n";
     38 #endif /* not lint */
     39 
     40 #ifndef lint
     41 static char sccsid[] = "@(#)mkfifo.c	5.3 (Berkeley) 6/1/90";
     42 #endif /* not lint */
     43 
     44 #include <sys/types.h>
     45 #include <sys/stat.h>
     46 #include <errno.h>
     47 #include <stdio.h>
     48 #include <string.h>
     49 
     50 main(argc, argv)
     51 	int argc;
     52 	char **argv;
     53 {
     54 	extern int errno, optind;
     55 	int ch, exitval, pflag;
     56 
     57 	pflag = 0;
     58 	while ((ch = getopt(argc, argv, "p")) != EOF)
     59 		switch(ch) {
     60 		case 'p':
     61 			pflag = 1;
     62 			break;
     63 		case '?':
     64 		default:
     65 			usage();
     66 		}
     67 
     68 	if (!*(argv += optind))
     69 		usage();
     70 
     71 	for (exitval = 0; *argv; ++argv) {
     72 		if (pflag && build(*argv)) {
     73 			exitval |= 1;
     74 			continue;
     75 		}
     76 		if (mkfifo(*argv, 0777) < 0) {
     77 			(void)fprintf(stderr, "mkfifo: %s: %s\n",
     78 			    *argv, strerror(errno));
     79 			exitval |= 1;
     80 		}
     81 	}
     82 	exit(exitval);
     83 }
     84 
     85 build(path)
     86 	char *path;
     87 {
     88 	register char *p;
     89 	struct stat sb;
     90 
     91 	for (p = path; *p; p++) {
     92 		if (*p  != '/')
     93 			continue;
     94 		if (stat(path, &sb)) {
     95 			if (errno != ENOENT || mkdir(path, 0777) < 0) {
     96 				(void)fprintf(stderr, "mkdir: %s: %s\n",
     97 				    path, strerror(errno));
     98 				return(1);
     99 			}
    100 		}
    101 		*p = '/';
    102 	}
    103 	return(0);
    104 }
    105 
    106 usage()
    107 {
    108 	(void)fprintf(stderr, "usage: mkfifo [-p] fifoname ...\n");
    109 	exit(1);
    110 }
    111