130 lines
3.6 KiB
C
130 lines
3.6 KiB
C
/*
|
|
* Copyright (c) 1980, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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 char copyright[] =
|
|
"@(#) Copyright (c) 1980, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
/*static char sccsid[] = "From: @(#)swapon.c 8.1 (Berkeley) 6/5/93";*/
|
|
static const char rcsid[] =
|
|
"$Id: dumpon.c,v 1.4 1997/02/22 14:32:22 peter Exp $";
|
|
#endif /* not lint */
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/stat.h>
|
|
#include <sysexits.h>
|
|
#include <err.h>
|
|
|
|
void usage __P((void)) __dead2;
|
|
static char *whoami;
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
extern char *optarg;
|
|
extern int optind;
|
|
int ch, verbose, rv;
|
|
struct stat stab;
|
|
int mib[2];
|
|
|
|
verbose = rv = 0;
|
|
whoami = argv[0];
|
|
while ((ch = getopt(argc, argv, "v")) != -1)
|
|
switch((char)ch) {
|
|
case 'v':
|
|
verbose = 1;
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argv += optind;
|
|
|
|
if (!argv[0] || argv[1])
|
|
usage();
|
|
|
|
if (strcmp(argv[0], "off")) {
|
|
rv = stat(argv[0], &stab);
|
|
if (rv) {
|
|
err(EX_OSFILE, "%s", argv[0]);
|
|
}
|
|
|
|
if (!S_ISBLK(stab.st_mode)) {
|
|
errx(EX_USAGE, "%s: must specify a block device",
|
|
argv[0]);
|
|
}
|
|
} else {
|
|
stab.st_rdev = NODEV;
|
|
}
|
|
|
|
mib[0] = CTL_KERN;
|
|
mib[1] = KERN_DUMPDEV;
|
|
|
|
rv = sysctl(mib, 2, (void *)0, (size_t *)0, &stab.st_rdev,
|
|
sizeof stab.st_rdev);
|
|
if (rv) {
|
|
err(EX_OSERR, "sysctl: kern.dumpdev");
|
|
}
|
|
|
|
if (verbose) {
|
|
if (stab.st_rdev == NODEV) {
|
|
printf("%s: crash dumps disabled\n", whoami);
|
|
} else {
|
|
printf("%s: crash dumps to %s (%lu, %lu)\n",
|
|
whoami, argv[0],
|
|
(unsigned long)major(stab.st_rdev),
|
|
(unsigned long)minor(stab.st_rdev));
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
fprintf(stderr,
|
|
"usage: %s [-v] special_file\n"
|
|
" %s [-v] off\n", whoami, whoami);
|
|
exit(EX_USAGE);
|
|
}
|