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/*
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Kevin Fall.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1989, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)mknod.c 8.1 (Berkeley) 6/5/93";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <grp.h>
#include <pwd.h>
#include <string.h>
static void
usage(void)
{
(void)fprintf(stderr,
"usage: mknod name\n"
" mknod name [b | c] major minor [owner:group]\n");
exit(1);
}
static u_long
id(const char *name, const char *type)
{
u_long val;
char *ep;
/*
* XXX
* We know that uid_t's and gid_t's are unsigned longs.
*/
errno = 0;
val = strtoul(name, &ep, 10);
if (errno)
err(1, "%s", name);
if (*ep != '\0')
errx(1, "%s: illegal %s name", name, type);
return (val);
}
static gid_t
a_gid(const char *s)
{
struct group *gr;
if (*s == '\0') /* Argument was "uid[:.]". */
errx(1, "group must be specified when the owner is");
return ((gr = getgrnam(s)) == NULL) ? id(s, "group") : gr->gr_gid;
}
static uid_t
a_uid(const char *s)
{
struct passwd *pw;
if (*s == '\0') /* Argument was "[:.]gid". */
errx(1, "owner must be specified when the group is");
return ((pw = getpwnam(s)) == NULL) ? id(s, "user") : pw->pw_uid;
}
int
main(int argc, char **argv)
{
int range_error;
uid_t uid;
gid_t gid;
mode_t mode;
dev_t dev;
char *cp, *endp;
long mymajor, myminor;
if (argc != 2 && argc != 5 && argc != 6)
usage();
if (argc >= 5) {
mode = 0666;
if (argv[2][0] == 'c')
mode |= S_IFCHR;
else if (argv[2][0] == 'b')
mode |= S_IFBLK;
else
errx(1, "node must be type 'b' or 'c'");
errno = 0;
mymajor = (long)strtoul(argv[3], &endp, 0);
if (endp == argv[3] || *endp != '\0')
errx(1, "%s: non-numeric major number", argv[3]);
range_error = errno;
errno = 0;
myminor = (long)strtoul(argv[4], &endp, 0);
if (endp == argv[4] || *endp != '\0')
errx(1, "%s: non-numeric minor number", argv[4]);
range_error |= errno;
dev = makedev(mymajor, myminor);
if (range_error || major(dev) != mymajor ||
(long)(u_int)minor(dev) != myminor)
errx(1, "major or minor number too large");
} else {
mode = 0666 | S_IFCHR;
dev = 0;
}
uid = gid = -1;
if (6 == argc) {
/* have owner:group */
if ((cp = strchr(argv[5], ':')) != NULL) {
*cp++ = '\0';
gid = a_gid(cp);
} else
usage();
uid = a_uid(argv[5]);
}
if (mknod(argv[1], mode, dev) != 0)
err(1, "%s", argv[1]);
if (6 == argc)
if (chown(argv[1], uid, gid))
err(1, "setting ownership on %s", argv[1]);
exit(0);
}