mknod.c revision 37422
11558Srgrimes/* 21558Srgrimes * Copyright (c) 1989, 1993 31558Srgrimes * The Regents of the University of California. All rights reserved. 41558Srgrimes * 51558Srgrimes * This code is derived from software contributed to Berkeley by 61558Srgrimes * Kevin Fall. 71558Srgrimes * 81558Srgrimes * Redistribution and use in source and binary forms, with or without 91558Srgrimes * modification, are permitted provided that the following conditions 101558Srgrimes * are met: 111558Srgrimes * 1. Redistributions of source code must retain the above copyright 121558Srgrimes * notice, this list of conditions and the following disclaimer. 131558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141558Srgrimes * notice, this list of conditions and the following disclaimer in the 151558Srgrimes * documentation and/or other materials provided with the distribution. 161558Srgrimes * 3. All advertising materials mentioning features or use of this software 171558Srgrimes * must display the following acknowledgement: 181558Srgrimes * This product includes software developed by the University of 191558Srgrimes * California, Berkeley and its contributors. 201558Srgrimes * 4. Neither the name of the University nor the names of its contributors 211558Srgrimes * may be used to endorse or promote products derived from this software 221558Srgrimes * without specific prior written permission. 231558Srgrimes * 241558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341558Srgrimes * SUCH DAMAGE. 351558Srgrimes */ 361558Srgrimes 371558Srgrimes#ifndef lint 3817347Sbdestatic const char copyright[] = 391558Srgrimes"@(#) Copyright (c) 1989, 1993\n\ 401558Srgrimes The Regents of the University of California. All rights reserved.\n"; 411558Srgrimes#endif /* not lint */ 421558Srgrimes 431558Srgrimes#ifndef lint 4417347Sbde#if 0 451558Srgrimesstatic char sccsid[] = "@(#)mknod.c 8.1 (Berkeley) 6/5/93"; 4637422Scharnier#endif 4717347Sbdestatic const char rcsid[] = 4837422Scharnier "$Id$"; 491558Srgrimes#endif /* not lint */ 501558Srgrimes 511558Srgrimes#include <sys/types.h> 521558Srgrimes#include <sys/stat.h> 5317347Sbde 5437422Scharnier#include <err.h> 5517347Sbde#include <errno.h> 561558Srgrimes#include <stdio.h> 5717347Sbde#include <stdlib.h> 5817347Sbde#include <unistd.h> 591558Srgrimes 6037422Scharnierstatic void 6137422Scharnierusage() 6237422Scharnier{ 6337422Scharnier (void)fprintf(stderr, "usage: mknod name [b | c] major minor\n"); 6437422Scharnier exit(1); 6537422Scharnier} 6637422Scharnier 6717347Sbdeint 681558Srgrimesmain(argc, argv) 691558Srgrimes int argc; 701558Srgrimes char **argv; 711558Srgrimes{ 7217347Sbde dev_t dev; 7317302Sjoerg char *endp; 7417347Sbde long major, minor; 7517347Sbde mode_t mode; 7617347Sbde int range_error; 771558Srgrimes 7837422Scharnier if (argc != 5) 7937422Scharnier usage(); 801558Srgrimes 811558Srgrimes mode = 0666; 821558Srgrimes if (argv[2][0] == 'c') 831558Srgrimes mode |= S_IFCHR; 841558Srgrimes else if (argv[2][0] == 'b') 851558Srgrimes mode |= S_IFBLK; 8626674Scharnier else 8726674Scharnier errx(1, "node must be type 'b' or 'c'"); 881558Srgrimes 8917347Sbde errno = 0; 9017347Sbde major = (long)strtoul(argv[3], &endp, 0); 9126674Scharnier if (endp == argv[3] || *endp != '\0') 9226674Scharnier errx(1, "%s: non-numeric major number", argv[3]); 9317347Sbde range_error = errno; 9417347Sbde errno = 0; 9517347Sbde minor = (long)strtoul(argv[4], &endp, 0); 9626674Scharnier if (endp == argv[4] || *endp != '\0') 9726674Scharnier errx(1, "%s: non-numeric minor number", argv[4]); 9817347Sbde range_error |= errno; 9917347Sbde dev = makedev(major, minor); 10026674Scharnier if (range_error || major(dev) != major || minor(dev) != minor) 10126674Scharnier errx(1, "major or minor number too large"); 10217302Sjoerg 10326674Scharnier if (mknod(argv[1], mode, dev) != 0) 10426674Scharnier err(1, "%s", argv[1]); 1051558Srgrimes exit(0); 1061558Srgrimes} 107