Merge "Lose mknod to toybox."

    lsof \

    md5 \

    mkdir \

    mknod \

    mount \

    nandread \

    netstat \

/*

 * Copyright (c) 2014, The Android Open Source Project

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *  * Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 *  * Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *  * Neither the name of Google, Inc. nor the names of its contributors

 *    may be used to endorse or promote products derived from this

 *    software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS

 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT

 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <sys/stat.h>

static int print_usage() {

    fprintf(stderr, "mknod <path> [b|c|u|p] <major> <minor>\n");

    return EXIT_FAILURE;

}

int mknod_main(int argc, char **argv) {

    char *path = NULL;

    int major = 0;

    int minor = 0;

    int args = 0;

    mode_t mode = 0660;

    /* Check correct argument count is 3 or 5 */

    if (argc != 3 && argc != 5) {

        fprintf(stderr, "Incorrect argument count\n");

        return print_usage();

    }

    path = argv[1];

    const char node_type = *argv[2];

    switch (node_type) {

    case 'b':

        mode |= S_IFBLK;

        args = 5;

        break;

    case 'c':

    case 'u':

        mode |= S_IFCHR;

        args = 5;

        break;

    case 'p':

        mode |= S_IFIFO;

        args = 3;

        break;

    default:

        fprintf(stderr, "Invalid node type '%c'\n", node_type);

        return print_usage();

    }

    if (argc != args) {

        if (args == 5) {

            fprintf(stderr, "Node type '%c' requires <major> and <minor>\n", node_type);

        } else {

            fprintf(stderr, "Node type '%c' does not require <major> and <minor>\n", node_type);

        }

        return print_usage();

    }

    if (args == 5) {

        major = atoi(argv[3]);

        minor = atoi(argv[4]);

    }

    if (mknod(path, mode, makedev(major, minor))) {

        perror("Unable to create node");

        return EXIT_FAILURE;

    }

    return 0;

}