/* $NetBSD: swaplist.c,v 1.18 2016/05/31 09:34:25 pgoyette 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.
*
* 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/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: swaplist.c,v 1.18 2016/05/31 09:34:25 pgoyette Exp $");
#endif
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/swap.h>
#include <unistd.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <util.h>
#define dbtoqb(b) dbtob((int64_t)(b))
/*
* NOTE: This file is separate from swapctl.c so that pstat can grab it.
*/
#include "swapctl.h"
int
list_swap(int pri, int kflag, int pflag, int tflag, int dolong, int hflag)
{
struct swapent *sep, *fsep;
long blocksize;
char szbuf[5], usbuf[5], avbuf[5]; /* size, used, avail */
const char *header, *suff;
size_t l;
int hlen, totalsize, size, totalinuse, inuse, ncounted, pathmax;
int rnswap, nswap = swapctl(SWAP_NSWAP, 0, 0), i;
if (nswap < 1) {
puts("no swap devices configured");
return 0;
}
fsep = sep = (struct swapent *)malloc(nswap * sizeof(*sep));
if (sep == NULL)
err(1, "malloc");
rnswap = swapctl(SWAP_STATS, (void *)sep, nswap);
if (rnswap < 0)
err(1, "SWAP_STATS");
if (nswap != rnswap)
warnx("SWAP_STATS different to SWAP_NSWAP (%d != %d)",
rnswap, nswap);
pathmax = 11;
switch(kflag) {
case 1:
header = "1K-blocks";
blocksize = 1024;
suff = "KBytes";
break;
case 2:
suff = "MBytes";
header = "1M-blocks";
blocksize = 1024 * 1024;
break;
case 3:
header = "1G-blocks";
blocksize = 1024 * 1024 * 1024;
suff = "GBytes";
break;
default:
suff = "blocks";
if (!hflag) {
header = getbsize(&hlen, &blocksize);
} else {
header = "Size";
blocksize = 1; suff = ""; /* unused */
}
break;
}
if (hflag || kflag)
hlen = strlen(header);
if (dolong && tflag == 0) {
for (i = rnswap; i-- > 0; sep++)
if ((size_t)pathmax < (l = strlen(sep->se_path)))
pathmax = l;
sep = fsep;
(void)printf("%-*s %*s %8s %8s %8s %s\n",
pathmax, "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) {
if (hflag == 0) {
(void)printf("%-*s %*ld ", pathmax, sep->se_path, hlen,
(long)(dbtoqb(size) / blocksize));
(void)printf("%8ld %8ld %5.0f%% %d\n",
(long)(dbtoqb(inuse) / blocksize),
(long)(dbtoqb(size - inuse) / blocksize),
(double)inuse / (double)size * 100.0,
sep->se_priority);
} else {
if ((humanize_number(szbuf, sizeof(szbuf), (dbtoqb(size)),
"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
err(1, "humanize_number");
if ((humanize_number(usbuf, sizeof(usbuf), (dbtoqb(inuse)),
"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
err(1, "humanize_number");
if ((humanize_number(avbuf, sizeof(avbuf), (dbtoqb(size-inuse)),
"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
err(1, "humanize_number");
(void)printf("%-*s %*s ", pathmax, sep->se_path, hlen, szbuf);
(void)printf("%8s %8s %5.0f%% %d\n",
usbuf, avbuf,
(double)inuse / (double)size * 100.0,
sep->se_priority);
}
}
}
if (tflag) {
if (hflag) {
if ((humanize_number(usbuf, sizeof(usbuf), (dbtoqb(totalinuse)),
"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
err(1, "humanize_number");
if ((humanize_number(szbuf, sizeof(szbuf), (dbtoqb(totalsize)),
"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
err(1, "humanize_number");
(void)printf("%s/%s swap space\n", usbuf, szbuf);
} else {
(void)printf("%ld/%ld %s swap space\n",
(long)(dbtoqb(totalinuse) / blocksize),
(long)(dbtoqb(totalsize) / blocksize),
suff);
}
}
else if (dolong == 0) {
if (hflag) {
if ((humanize_number(szbuf, sizeof(szbuf), (dbtoqb(totalsize)),
"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
err(1, "humanize_number");
if ((humanize_number(usbuf, sizeof(usbuf), (dbtoqb(totalinuse)),
"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
err(1, "humanize_number");
if ((humanize_number(avbuf, sizeof(avbuf), (dbtoqb(totalsize-totalinuse)),
"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
err(1, "humanize_number");
(void)printf("total: %s allocated, %s used, %s available.\n",
szbuf, usbuf, avbuf);
} else {
printf("total: %ld %s allocated, %ld %s used, "
"%ld %s available\n",
(long)(dbtoqb(totalsize) / blocksize), suff,
(long)(dbtoqb(totalinuse) / blocksize), suff,
(long)(dbtoqb(totalsize - totalinuse) / blocksize), suff);
}
} else if (ncounted > 1) {
if (hflag) {
if ((humanize_number(szbuf, sizeof(szbuf), (dbtoqb(totalsize)),
"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
err(1, "humanize_number");
if ((humanize_number(usbuf, sizeof(usbuf), (dbtoqb(totalinuse)),
"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
err(1, "humanize_number");
if ((humanize_number(avbuf, sizeof(avbuf), (dbtoqb(totalsize-totalinuse)),
"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
err(1, "humanize_number");
(void)printf("%-*s %*s %8s %8s %5.0f%%\n", pathmax, "Total",
hlen, szbuf, usbuf, avbuf,
(double)(totalinuse) / (double)totalsize * 100.0);
} else {
(void)printf("%-*s %*ld %8ld %8ld %5.0f%%\n", pathmax, "Total",
hlen,
(long)(dbtoqb(totalsize) / blocksize),
(long)(dbtoqb(totalinuse) / blocksize),
(long)(dbtoqb(totalsize - totalinuse) / blocksize),
(double)(totalinuse) / (double)totalsize * 100.0);
}
}
if (fsep)
(void)free(fsep);
return 1;
}