usr/src/usr.bin/mkfifo/mkfifo.c

/*
 * Copyright (c) 1990 Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1990 Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)mkfifo.c    5.3 (Berkeley) %G%";
#endif /* not lint */

#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>

main(argc, argv)
        int argc;
        char **argv;
{
        extern int errno, optind;
        int ch, exitval, pflag;

        pflag = 0;
        while ((ch = getopt(argc, argv, "p")) != EOF)
                switch(ch) {
                case 'p':
                        pflag = 1;
                        break;
                case '?':
                default:
                        usage();
                }

        if (!*(argv += optind))
                usage();

        for (exitval = 0; *argv; ++argv) {
                if (pflag && build(*argv)) {
                        exitval |= 1;
                        continue;
                }
                if (mkfifo(*argv, 0777) < 0) {
                        (void)fprintf(stderr, "mkfifo: %s: %s\n",
                            *argv, strerror(errno));
                        exitval |= 1;
                }
        }
        exit(exitval);
}

build(path)
        char *path;
{
        register char *p;
        struct stat sb;

        for (p = path; *p; p++) {
                if (*p  != '/')
                        continue;
                if (stat(path, &sb)) {
                        if (errno != ENOENT || mkdir(path, 0777) < 0) {
                                (void)fprintf(stderr, "mkdir: %s: %s\n",
                                    path, strerror(errno));
                                return(1);
                        }
                }
                *p = '/';
        }
        return(0);
}

usage()
{
        (void)fprintf(stderr, "usage: mkfifo [-p] fifoname ...\n");
        exit(1);
}