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/*
* 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;
}
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