172 lines
4.2 KiB
C
172 lines
4.2 KiB
C
/* $NetBSD: swap.c,v 1.19 2006/03/18 11:02:48 dsl Exp $ */
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/*-
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* Copyright (c) 1997 Matthew R. Green. All rights reserved.
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* Copyright (c) 1980, 1992, 1993
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* The Regents of the University of California. 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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, 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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#if 0
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static char sccsid[] = "@(#)swap.c 8.3 (Berkeley) 4/29/95";
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#endif
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__RCSID("$NetBSD: swap.c,v 1.19 2006/03/18 11:02:48 dsl Exp $");
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/swap.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 <unistd.h>
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#include "systat.h"
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#include "extern.h"
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void showspace(char *header, int hlen, long blocksize);
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static long blocksize;
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static int hlen, nswap, rnswap;
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static int first = 1;
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static struct swapent *swap_devices;
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WINDOW *
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openswap(void)
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{
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return (subwin(stdscr, -1, 0, 5, 0));
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}
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void
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closeswap(WINDOW *w)
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{
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if (w == NULL)
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return;
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wclear(w);
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wrefresh(w);
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delwin(w);
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}
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/* do nothing */
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int
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initswap(void)
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{
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return (1);
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}
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void
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fetchswap(void)
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{
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int update_label = 0;
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first = 0;
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nswap = swapctl(SWAP_NSWAP, 0, 0);
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if (nswap < 0)
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error("error: %s", strerror(errno));
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if (nswap == 0)
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return;
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update_label = (nswap != rnswap);
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if (swap_devices)
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(void)free(swap_devices);
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if ((swap_devices = malloc(nswap * sizeof(*swap_devices))) == NULL) {
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error("malloc failed");
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die(0);
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}
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if ((rnswap = swapctl(SWAP_STATS, (void *)swap_devices, nswap)) != nswap) {
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error("swapctl failed");
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die(0);
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}
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if (update_label)
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labelswap();
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}
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void
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labelswap(void)
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{
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char *header;
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int row;
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row = 0;
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wmove(wnd, row, 0);
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wclrtobot(wnd);
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if (first)
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fetchswap();
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if (nswap == 0) {
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mvwprintw(wnd, row++, 0, "No swap");
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return;
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}
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header = getbsize(&hlen, &blocksize);
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mvwprintw(wnd, row++, 0, "%-5s%*s%9s %55s",
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"Disk", hlen, header, "Used",
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"/0% /10% /20% /30% /40% /50% /60% /70% /80% /90% /100%");
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}
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void
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showswap(void)
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{
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int col, blk_div, i, avail, used, xsize, swp_free;
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struct swapent *sep;
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char *p;
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blk_div = blocksize / 512;
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swp_free = avail = 0;
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for (sep = swap_devices, i = 0; i < nswap; i++, sep++) {
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p = strrchr(sep->se_path, '/');
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p = p ? p+1 : sep->se_path;
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mvwprintw(wnd, i + 1, 0, "%-5s", p);
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col = 5;
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mvwprintw(wnd, i + 1, col, "%*d", hlen, sep->se_nblks / blk_div);
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col += hlen;
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xsize = sep->se_nblks;
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used = sep->se_inuse;
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avail += xsize;
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swp_free += xsize - used;
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mvwprintw(wnd, i + 1, col, "%9d ", used / blk_div);
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wclrtoeol(wnd);
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whline(wnd, 'X', (100 * used / xsize + 1) / 2);
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}
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/* do total if necessary */
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if (nswap > 1) {
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used = avail - swp_free;
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mvwprintw(wnd, i + 1, 0, "%-5s%*d%9d ",
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"Total", hlen, avail / blk_div, used / blk_div);
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wclrtoeol(wnd);
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whline(wnd, 'X', (100 * used / avail + 1) / 2);
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}
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}
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