NetBSD/sbin/swapctl/swaplist.c

133 lines
4.1 KiB
C

/* $NetBSD: swaplist.c,v 1.3 1997/07/21 05:05:12 mrg Exp $ */
/*
* Copyright (c) 1997 Matthew R. Green
* 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 Matthew R. Green for
* The NetBSD Foundation.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <sys/param.h>
#include <sys/stat.h>
#include <vm/vm_swap.h>
#include <unistd.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*
* NOTE: This file is separate from swapctl.c so that pstat can grab it.
*/
#include "swapctl.h"
void
list_swap(pri, kflag, pflag, tflag, dolong)
int pri;
int kflag;
int pflag;
int tflag;
int dolong;
{
struct swapent *sep, *fsep;
long blocksize;
char *header;
int hlen, totalsize, size, totalinuse, inuse, ncounted;
int rnswap, nswap = swapctl(SWAP_NSWAP, 0, 0);
if (nswap < 1) {
puts("no swap devices configured");
exit(0);
}
fsep = sep = (struct swapent *)malloc(nswap * sizeof(*sep));
if (sep == NULL)
err(1, "malloc");
rnswap = swapctl(SWAP_STATS, (void *)sep, nswap);
if (nswap < 0)
errx(1, "SWAP_STATS");
if (nswap != rnswap)
warnx("SWAP_STATS gave different value than SWAP_NSWAP");
if (dolong && tflag == 0) {
if (kflag) {
header = "1K-blocks";
blocksize = 1024;
hlen = strlen(header);
} else
header = getbsize(&hlen, &blocksize);
(void)printf("%-11s %*s %8s %8s %8s %s\n",
"Device", hlen, header,
"Used", "Avail", "Capacity", "Priority");
}
totalsize = totalinuse = ncounted = 0;
for (; rnswap-- > 0; sep++) {
if (pflag && sep->se_priority != pri)
continue;
ncounted++;
size = sep->se_nblks;
inuse = sep->se_inuse;
totalsize += size;
totalinuse += inuse;
if (dolong && tflag == 0) {
/* XXX handle se_dev == NODEV */
(void)printf("/dev/%-6s %*ld ",
devname(sep->se_dev, S_IFBLK),
hlen, dbtob(size) / blocksize);
(void)printf("%8ld %8ld %5.0f%% %d\n",
dbtob(inuse) / blocksize,
dbtob(size - inuse) / blocksize,
(double)inuse / (double)size * 100.0,
sep->se_priority);
}
}
if (tflag)
(void)printf("%dM/%dM swap space\n",
dbtob(totalinuse) / (1024 * 1024),
dbtob(totalsize) / (1024 * 1024));
else if (dolong == 0)
(void)printf("total: %dk bytes allocated = %dk used, %dk available\n",
dbtob(totalsize) / 1024,
dbtob(totalinuse) / 1024,
dbtob(totalsize - totalinuse) / 1024);
else if (ncounted > 1)
(void)printf("%-11s %*ld %8ld %8ld %5.0f%%\n", "Total", hlen,
dbtob(totalsize) / blocksize,
dbtob(totalinuse) / blocksize,
dbtob(totalsize - totalinuse) / blocksize,
(double)(totalinuse) / (double)totalsize * 100.0);
if (fsep)
(void)free(fsep);
}