mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-23 17:31:09 +01:00
142 lines
3.8 KiB
C
142 lines
3.8 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.
|
|
* 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.
|
|
*/
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static const 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";
|
|
#endif /* not lint */
|
|
#endif
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/disk.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <err.h>
|
|
#include <fcntl.h>
|
|
#include <paths.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sysexits.h>
|
|
#include <unistd.h>
|
|
|
|
static int verbose;
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "%s\n%s\n",
|
|
"usage: dumpon [-v] special_file",
|
|
" dumpon [-v] off");
|
|
exit(EX_USAGE);
|
|
}
|
|
|
|
static void
|
|
check_size(int fd, const char *fn)
|
|
{
|
|
int name[] = { CTL_HW, HW_PHYSMEM };
|
|
size_t namelen = sizeof(name) / sizeof(*name);
|
|
unsigned long physmem;
|
|
size_t len;
|
|
off_t mediasize;
|
|
int minidump;
|
|
|
|
len = sizeof(minidump);
|
|
if (sysctlbyname("debug.minidump", &minidump, &len, NULL, 0) == 0 &&
|
|
minidump == 1)
|
|
return;
|
|
len = sizeof(physmem);
|
|
if (sysctl(name, namelen, &physmem, &len, NULL, 0) != 0)
|
|
err(EX_OSERR, "can't get memory size");
|
|
if (ioctl(fd, DIOCGMEDIASIZE, &mediasize) != 0)
|
|
err(EX_OSERR, "%s: can't get size", fn);
|
|
if ((uintmax_t)mediasize < (uintmax_t)physmem) {
|
|
if (verbose)
|
|
printf("%s is smaller than physical memory\n", fn);
|
|
exit(EX_IOERR);
|
|
}
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int ch;
|
|
int i, fd;
|
|
u_int u;
|
|
|
|
while ((ch = getopt(argc, argv, "v")) != -1)
|
|
switch((char)ch) {
|
|
case 'v':
|
|
verbose = 1;
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc != 1)
|
|
usage();
|
|
|
|
if (strcmp(argv[0], "off") != 0) {
|
|
fd = open(argv[0], O_RDONLY);
|
|
if (fd < 0)
|
|
err(EX_OSFILE, "%s", argv[0]);
|
|
check_size(fd, argv[0]);
|
|
u = 0;
|
|
i = ioctl(fd, DIOCSKERNELDUMP, &u);
|
|
u = 1;
|
|
i = ioctl(fd, DIOCSKERNELDUMP, &u);
|
|
if (i == 0 && verbose)
|
|
printf("kernel dumps on %s\n", argv[0]);
|
|
} else {
|
|
fd = open(_PATH_DEVNULL, O_RDONLY);
|
|
if (fd < 0)
|
|
err(EX_OSFILE, "%s", _PATH_DEVNULL);
|
|
u = 0;
|
|
i = ioctl(fd, DIOCSKERNELDUMP, &u);
|
|
if (i == 0 && verbose)
|
|
printf("kernel dumps disabled\n");
|
|
}
|
|
if (i < 0)
|
|
err(EX_OSERR, "ioctl(DIOCSKERNELDUMP)");
|
|
|
|
exit (0);
|
|
}
|