1130b656e5
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
119 lines
3.5 KiB
C
119 lines
3.5 KiB
C
/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Kevin Fall.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1989, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)mknod.c 8.1 (Berkeley) 6/5/93";
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#else
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static const char rcsid[] =
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"$FreeBSD$";
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#endif
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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dev_t dev;
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char *endp;
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long major, minor;
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mode_t mode;
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int range_error;
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if (argc != 5) {
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(void)fprintf(stderr,
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"usage: mknod name [b | c] major minor\n");
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exit(1);
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}
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mode = 0666;
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if (argv[2][0] == 'c')
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mode |= S_IFCHR;
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else if (argv[2][0] == 'b')
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mode |= S_IFBLK;
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else {
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(void)fprintf(stderr,
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"mknod: node must be type 'b' or 'c'\n");
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exit(1);
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}
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errno = 0;
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major = (long)strtoul(argv[3], &endp, 0);
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if (endp == argv[3] || *endp != '\0') {
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(void)fprintf(stderr,
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"mknod: %s: non-numeric major number\n", argv[3]);
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exit(1);
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}
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range_error = errno;
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errno = 0;
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minor = (long)strtoul(argv[4], &endp, 0);
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if (endp == argv[3] || *endp != '\0') {
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(void)fprintf(stderr,
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"mknod: %s: non-numeric minor number\n", argv[4]);
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exit(1);
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}
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range_error |= errno;
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dev = makedev(major, minor);
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if (range_error || major(dev) != major || minor(dev) != minor) {
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(void)fprintf(stderr,
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"mknod: major or minor number too large\n");
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exit(1);
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}
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if (mknod(argv[1], mode, dev) != 0) {
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(void)fprintf(stderr,
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"mknod: %s: %s\n", argv[1], strerror(errno));
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exit(1);
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}
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exit(0);
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}
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