0b0ae8e16e
that this provokes. "Wherever possible" means "In the kernel OR NOT
C++" (implying C).
There are places where (void *) pointers are not valid, such as for
function pointers, but in the special case of (void *)0, agreement
settles on it being OK.
Most of the fixes were NULL where an integer zero was needed; many
of the fixes were NULL where ascii <nul> ('\0') was needed, and a
few were just "other".
Tested on: i386 sparc64
283 lines
6.6 KiB
C
283 lines
6.6 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.
|
|
*/
|
|
|
|
#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[] = "@(#)swapon.c 8.1 (Berkeley) 6/5/93";
|
|
#endif /* not lint */
|
|
#endif
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/stat.h>
|
|
#include <sys/param.h>
|
|
#include <sys/user.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fstab.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
|
|
static void usage(void);
|
|
static int swap_on_off(char *name, int ignoreebusy);
|
|
static void swaplist(int, int, int);
|
|
|
|
enum { SWAPON, SWAPOFF, SWAPCTL } orig_prog, which_prog = SWAPCTL;
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
struct fstab *fsp;
|
|
char *ptr;
|
|
int stat;
|
|
int ch, doall;
|
|
int sflag = 0, lflag = 0, hflag = 0;
|
|
|
|
if ((ptr = strrchr(argv[0], '/')) == NULL)
|
|
ptr = argv[0];
|
|
if (strstr(ptr, "swapon"))
|
|
which_prog = SWAPON;
|
|
else if (strstr(ptr, "swapoff"))
|
|
which_prog = SWAPOFF;
|
|
orig_prog = which_prog;
|
|
|
|
doall = 0;
|
|
while ((ch = getopt(argc, argv, "AadlhksU")) != -1) {
|
|
switch(ch) {
|
|
case 'A':
|
|
if (which_prog == SWAPCTL) {
|
|
doall = 1;
|
|
which_prog = SWAPON;
|
|
} else {
|
|
usage();
|
|
}
|
|
break;
|
|
case 'a':
|
|
if (which_prog == SWAPON || which_prog == SWAPOFF)
|
|
doall = 1;
|
|
else
|
|
which_prog = SWAPON;
|
|
break;
|
|
case 'd':
|
|
if (which_prog == SWAPCTL)
|
|
which_prog = SWAPOFF;
|
|
else
|
|
usage();
|
|
break;
|
|
case 's':
|
|
sflag = 1;
|
|
break;
|
|
case 'l':
|
|
lflag = 1;
|
|
break;
|
|
case 'h':
|
|
hflag = 'M';
|
|
break;
|
|
case 'k':
|
|
hflag = 'K';
|
|
break;
|
|
case 'U':
|
|
if (which_prog == SWAPCTL) {
|
|
doall = 1;
|
|
which_prog = SWAPOFF;
|
|
} else {
|
|
usage();
|
|
}
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
argv += optind;
|
|
|
|
stat = 0;
|
|
if (which_prog == SWAPON || which_prog == SWAPOFF) {
|
|
if (doall) {
|
|
while ((fsp = getfsent()) != NULL) {
|
|
if (strcmp(fsp->fs_type, FSTAB_SW))
|
|
continue;
|
|
if (strstr(fsp->fs_mntops, "noauto"))
|
|
continue;
|
|
if (swap_on_off(fsp->fs_spec, 1)) {
|
|
stat = 1;
|
|
} else {
|
|
printf("%s: %sing %s as swap device\n",
|
|
getprogname(), which_prog == SWAPOFF ? "remov" : "add",
|
|
fsp->fs_spec);
|
|
}
|
|
}
|
|
}
|
|
else if (!*argv)
|
|
usage();
|
|
for (; *argv; ++argv) {
|
|
if (swap_on_off(*argv, 0)) {
|
|
stat = 1;
|
|
} else if (orig_prog == SWAPCTL) {
|
|
printf("%s: %sing %s as swap device\n",
|
|
getprogname(), which_prog == SWAPOFF ? "remov" : "add",
|
|
*argv);
|
|
}
|
|
}
|
|
} else {
|
|
if (lflag || sflag)
|
|
swaplist(lflag, sflag, hflag);
|
|
else
|
|
usage();
|
|
}
|
|
exit(stat);
|
|
}
|
|
|
|
static int
|
|
swap_on_off(char *name, int doingall)
|
|
{
|
|
if ((which_prog == SWAPOFF ? swapoff(name) : swapon(name)) == -1) {
|
|
switch (errno) {
|
|
case EBUSY:
|
|
if (!doingall)
|
|
warnx("%s: device already in use", name);
|
|
break;
|
|
case EINVAL:
|
|
if (which_prog == SWAPON)
|
|
warnx("%s: NSWAPDEV limit reached", name);
|
|
else if (!doingall)
|
|
warn("%s", name);
|
|
break;
|
|
default:
|
|
warn("%s", name);
|
|
break;
|
|
}
|
|
return(1);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "usage: %s ", getprogname());
|
|
switch(orig_prog) {
|
|
case SWAPOFF:
|
|
fprintf(stderr, "[-a] [special_file ...]\n");
|
|
break;
|
|
case SWAPON:
|
|
fprintf(stderr, "[-a] [special_file ...]\n");
|
|
break;
|
|
case SWAPCTL:
|
|
fprintf(stderr, "[-lshAU] [-a/-d special_file ...]\n");
|
|
break;
|
|
}
|
|
exit(1);
|
|
}
|
|
|
|
static void
|
|
swaplist(int lflag, int sflag, int hflag)
|
|
{
|
|
size_t mibsize, size;
|
|
struct xswdev xsw;
|
|
int hlen, mib[16], n, pagesize;
|
|
long blocksize;
|
|
long long total = 0;
|
|
long long used = 0;
|
|
long long tmp_total;
|
|
long long tmp_used;
|
|
|
|
pagesize = getpagesize();
|
|
switch(hflag) {
|
|
case 'K':
|
|
blocksize = 1024;
|
|
hlen = 10;
|
|
break;
|
|
case 'M':
|
|
blocksize = 1024 * 1024;
|
|
hlen = 10;
|
|
break;
|
|
default:
|
|
getbsize(&hlen, &blocksize);
|
|
break;
|
|
}
|
|
|
|
mibsize = sizeof mib / sizeof mib[0];
|
|
if (sysctlnametomib("vm.swap_info", mib, &mibsize) == -1)
|
|
err(1, "sysctlnametomib()");
|
|
|
|
if (lflag) {
|
|
char buf[32];
|
|
snprintf(buf, sizeof(buf), "%ld-blocks", blocksize);
|
|
printf("%-13s %*s %*s\n",
|
|
"Device:",
|
|
hlen, buf,
|
|
hlen, "Used:");
|
|
}
|
|
|
|
for (n = 0; ; ++n) {
|
|
mib[mibsize] = n;
|
|
size = sizeof xsw;
|
|
if (sysctl(mib, mibsize + 1, &xsw, &size, NULL, 0) == -1)
|
|
break;
|
|
if (xsw.xsw_version != XSWDEV_VERSION)
|
|
errx(1, "xswdev version mismatch");
|
|
|
|
tmp_total = (long long)xsw.xsw_nblks * pagesize / blocksize;
|
|
tmp_used = (long long)xsw.xsw_used * pagesize / blocksize;
|
|
total += tmp_total;
|
|
used += tmp_used;
|
|
if (lflag) {
|
|
printf("/dev/%-8s %*lld %*lld\n",
|
|
devname(xsw.xsw_dev, S_IFCHR),
|
|
hlen, tmp_total,
|
|
hlen, tmp_used);
|
|
}
|
|
}
|
|
if (errno != ENOENT)
|
|
err(1, "sysctl()");
|
|
|
|
if (sflag) {
|
|
printf("Total: %*lld %*lld\n",
|
|
hlen, total,
|
|
hlen, used);
|
|
}
|
|
}
|
|
|