225 lines
7.1 KiB
C
225 lines
7.1 KiB
C
/* $NetBSD: swaplist.c,v 1.19 2023/12/11 12:47:24 mlelstv Exp $ */
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/*
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* Copyright (c) 1997 Matthew R. Green
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: swaplist.c,v 1.19 2023/12/11 12:47:24 mlelstv Exp $");
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#endif
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/swap.h>
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#include <unistd.h>
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#include <err.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include <util.h>
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#define dbtoqb(b) dbtob((int64_t)(b))
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/*
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* NOTE: This file is separate from swapctl.c so that pstat can grab it.
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*/
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#include "swapctl.h"
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int
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list_swap(int pri, int kflag, int pflag, int tflag, int dolong, int hflag)
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{
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struct swapent *sep, *fsep;
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long blocksize;
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char szbuf[5], usbuf[5], avbuf[5]; /* size, used, avail */
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const char *header, *suff;
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size_t l;
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int hlen, size, inuse, ncounted, pathmax;
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int rnswap, nswap = swapctl(SWAP_NSWAP, 0, 0), i;
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int64_t totalsize, totalinuse;
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if (nswap < 1) {
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puts("no swap devices configured");
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return 0;
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}
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fsep = sep = (struct swapent *)malloc(nswap * sizeof(*sep));
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if (sep == NULL)
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err(1, "malloc");
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rnswap = swapctl(SWAP_STATS, (void *)sep, nswap);
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if (rnswap < 0)
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err(1, "SWAP_STATS");
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if (nswap != rnswap)
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warnx("SWAP_STATS different to SWAP_NSWAP (%d != %d)",
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rnswap, nswap);
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pathmax = 11;
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switch(kflag) {
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case 1:
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header = "1K-blocks";
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blocksize = 1024;
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suff = "KBytes";
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break;
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case 2:
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suff = "MBytes";
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header = "1M-blocks";
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blocksize = 1024 * 1024;
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break;
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case 3:
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header = "1G-blocks";
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blocksize = 1024 * 1024 * 1024;
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suff = "GBytes";
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break;
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default:
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suff = "blocks";
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if (!hflag) {
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header = getbsize(&hlen, &blocksize);
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} else {
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header = "Size";
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blocksize = 1; suff = ""; /* unused */
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}
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break;
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}
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if (hflag || kflag)
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hlen = strlen(header);
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if (dolong && tflag == 0) {
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for (i = rnswap; i-- > 0; sep++)
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if ((size_t)pathmax < (l = strlen(sep->se_path)))
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pathmax = l;
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sep = fsep;
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(void)printf("%-*s %*s %8s %8s %8s %s\n",
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pathmax, "Device", hlen, header,
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"Used", "Avail", "Capacity", "Priority");
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}
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totalsize = totalinuse = ncounted = 0;
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for (; rnswap-- > 0; sep++) {
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if (pflag && sep->se_priority != pri)
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continue;
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ncounted++;
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size = sep->se_nblks;
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inuse = sep->se_inuse;
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totalsize += size;
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totalinuse += inuse;
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if (dolong && tflag == 0) {
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if (hflag == 0) {
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(void)printf("%-*s %*ld ", pathmax, sep->se_path, hlen,
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(long)(dbtoqb(size) / blocksize));
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(void)printf("%8ld %8ld %5.0f%% %d\n",
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(long)(dbtoqb(inuse) / blocksize),
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(long)(dbtoqb(size - inuse) / blocksize),
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(double)inuse / (double)size * 100.0,
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sep->se_priority);
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} else {
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if ((humanize_number(szbuf, sizeof(szbuf), (dbtoqb(size)),
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"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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if ((humanize_number(usbuf, sizeof(usbuf), (dbtoqb(inuse)),
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"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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if ((humanize_number(avbuf, sizeof(avbuf), (dbtoqb(size-inuse)),
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"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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(void)printf("%-*s %*s ", pathmax, sep->se_path, hlen, szbuf);
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(void)printf("%8s %8s %5.0f%% %d\n",
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usbuf, avbuf,
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(double)inuse / (double)size * 100.0,
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sep->se_priority);
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}
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}
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}
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if (tflag) {
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if (hflag) {
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if ((humanize_number(usbuf, sizeof(usbuf), (dbtoqb(totalinuse)),
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"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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if ((humanize_number(szbuf, sizeof(szbuf), (dbtoqb(totalsize)),
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"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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(void)printf("%s/%s swap space\n", usbuf, szbuf);
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} else {
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(void)printf("%ld/%ld %s swap space\n",
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(long)(dbtoqb(totalinuse) / blocksize),
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(long)(dbtoqb(totalsize) / blocksize),
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suff);
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}
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}
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else if (dolong == 0) {
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if (hflag) {
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if ((humanize_number(szbuf, sizeof(szbuf), (dbtoqb(totalsize)),
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"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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if ((humanize_number(usbuf, sizeof(usbuf), (dbtoqb(totalinuse)),
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"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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if ((humanize_number(avbuf, sizeof(avbuf), (dbtoqb(totalsize-totalinuse)),
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"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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(void)printf("total: %s allocated, %s used, %s available.\n",
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szbuf, usbuf, avbuf);
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} else {
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printf("total: %ld %s allocated, %ld %s used, "
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"%ld %s available\n",
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(long)(dbtoqb(totalsize) / blocksize), suff,
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(long)(dbtoqb(totalinuse) / blocksize), suff,
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(long)(dbtoqb(totalsize - totalinuse) / blocksize), suff);
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}
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} else if (ncounted > 1) {
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if (hflag) {
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if ((humanize_number(szbuf, sizeof(szbuf), (dbtoqb(totalsize)),
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"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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if ((humanize_number(usbuf, sizeof(usbuf), (dbtoqb(totalinuse)),
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"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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if ((humanize_number(avbuf, sizeof(avbuf), (dbtoqb(totalsize-totalinuse)),
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"", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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(void)printf("%-*s %*s %8s %8s %5.0f%%\n", pathmax, "Total",
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hlen, szbuf, usbuf, avbuf,
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(double)(totalinuse) / (double)totalsize * 100.0);
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} else {
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(void)printf("%-*s %*ld %8ld %8ld %5.0f%%\n", pathmax, "Total",
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hlen,
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(long)(dbtoqb(totalsize) / blocksize),
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(long)(dbtoqb(totalinuse) / blocksize),
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(long)(dbtoqb(totalsize - totalinuse) / blocksize),
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(double)(totalinuse) / (double)totalsize * 100.0);
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}
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}
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if (fsep)
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(void)free(fsep);
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return 1;
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}
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