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Annotation of 43BSDReno/usr.bin/mkfifo/mkfifo.c, revision 1.1

1.1     ! root        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 are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: char copyright[] =
        !            22: "@(#) Copyright (c) 1990 Regents of the University of California.\n\
        !            23:  All rights reserved.\n";
        !            24: #endif /* not lint */
        !            25: 
        !            26: #ifndef lint
        !            27: static char sccsid[] = "@(#)mkfifo.c   5.3 (Berkeley) 6/1/90";
        !            28: #endif /* not lint */
        !            29: 
        !            30: #include <sys/types.h>
        !            31: #include <sys/stat.h>
        !            32: #include <errno.h>
        !            33: #include <stdio.h>
        !            34: #include <string.h>
        !            35: 
        !            36: main(argc, argv)
        !            37:        int argc;
        !            38:        char **argv;
        !            39: {
        !            40:        extern int errno, optind;
        !            41:        int ch, exitval, pflag;
        !            42: 
        !            43:        pflag = 0;
        !            44:        while ((ch = getopt(argc, argv, "p")) != EOF)
        !            45:                switch(ch) {
        !            46:                case 'p':
        !            47:                        pflag = 1;
        !            48:                        break;
        !            49:                case '?':
        !            50:                default:
        !            51:                        usage();
        !            52:                }
        !            53: 
        !            54:        if (!*(argv += optind))
        !            55:                usage();
        !            56: 
        !            57:        for (exitval = 0; *argv; ++argv) {
        !            58:                if (pflag && build(*argv)) {
        !            59:                        exitval |= 1;
        !            60:                        continue;
        !            61:                }
        !            62:                if (mkfifo(*argv, 0777) < 0) {
        !            63:                        (void)fprintf(stderr, "mkfifo: %s: %s\n",
        !            64:                            *argv, strerror(errno));
        !            65:                        exitval |= 1;
        !            66:                }
        !            67:        }
        !            68:        exit(exitval);
        !            69: }
        !            70: 
        !            71: build(path)
        !            72:        char *path;
        !            73: {
        !            74:        register char *p;
        !            75:        struct stat sb;
        !            76: 
        !            77:        for (p = path; *p; p++) {
        !            78:                if (*p  != '/')
        !            79:                        continue;
        !            80:                if (stat(path, &sb)) {
        !            81:                        if (errno != ENOENT || mkdir(path, 0777) < 0) {
        !            82:                                (void)fprintf(stderr, "mkdir: %s: %s\n",
        !            83:                                    path, strerror(errno));
        !            84:                                return(1);
        !            85:                        }
        !            86:                }
        !            87:                *p = '/';
        !            88:        }
        !            89:        return(0);
        !            90: }
        !            91: 
        !            92: usage()
        !            93: {
        !            94:        (void)fprintf(stderr, "usage: mkfifo [-p] fifoname ...\n");
        !            95:        exit(1);
        !            96: }

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