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Annotation of Net2/arch/i386/floppy/mknod/mknod.c, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1991 The 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:  *     @(#)mknod.c     5.1 (Berkeley) 5/9/91
        !            34:  */
        !            35: 
        !            36: #include <sys/param.h>
        !            37: #include <sys/stat.h>
        !            38: 
        !            39: int eval;
        !            40: 
        !            41: main(argc, argv)
        !            42:        int argc;
        !            43:        char **argv;
        !            44: {
        !            45:        register char *p;
        !            46:        register int major, minor;
        !            47:        unsigned short mode;
        !            48: 
        !            49:        if (*++argv && **argv == '-') {
        !            50:                err("no options available", 0);
        !            51:                _exit(1);
        !            52:        }
        !            53:        if (argc != 5) {
        !            54: usage:         err("usage: mknod name [b|c] major minor", 0);
        !            55:                _exit(1);
        !            56:        }
        !            57:                
        !            58:        mode = 0666;
        !            59:        if (argv[1][0] == 'c')
        !            60:                mode |= S_IFCHR;
        !            61:        else if (argv[1][0] == 'b')
        !            62:                mode |= S_IFBLK;
        !            63:        else
        !            64:                goto usage;
        !            65: 
        !            66:        for (major = 0, p = argv[2]; *p; ++p)
        !            67:                 major = major * 10 + *p - '0';
        !            68:        for (minor = 0, p = argv[3]; *p; ++p)
        !            69:                 minor = minor * 10 + *p - '0';
        !            70: 
        !            71:        if (mknod(argv[0], mode, makedev(major, minor)) < 0) {
        !            72:                err(argv[0], 1);
        !            73:                _exit(1);
        !            74:        }
        !            75:        _exit(0);
        !            76: }
        !            77: 
        !            78: #define        PROGNAME        "mknod: "
        !            79: #include "errfunction"

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