1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1980, 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * Copyright (c) 2017, 2020 Yoshihiro Ota 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 34 #ifdef lint 35 static const char sccsid[] = "@(#)swap.c 8.3 (Berkeley) 4/29/95"; 36 #endif 37 38 /* 39 * swapinfo - based on a program of the same name by Kevin Lahey 40 */ 41 42 #include <sys/param.h> 43 #include <sys/ioctl.h> 44 #include <sys/stat.h> 45 46 #include <kvm.h> 47 #include <nlist.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <unistd.h> 51 #include <string.h> 52 #include <err.h> 53 54 #include "systat.h" 55 #include "extern.h" 56 #include "devs.h" 57 58 static int pathlen; 59 60 WINDOW * 61 openswap(void) 62 { 63 64 return (subwin(stdscr, LINES - 3 - 1, 0, MAINWIN_ROW, 0)); 65 } 66 67 void 68 closeswap(WINDOW *w) 69 { 70 71 if (w == NULL) 72 return; 73 wclear(w); 74 wrefresh(w); 75 delwin(w); 76 } 77 78 /* 79 * The meat of all the swap stuff is stolen from pstat(8)'s 80 * swapmode(), which is based on a program called swapinfo written by 81 * Kevin Lahey <kml@rokkaku.atl.ga.us>. 82 */ 83 84 #define NSWAP 16 85 86 static struct kvm_swap kvmsw[NSWAP]; 87 static int kvnsw, okvnsw; 88 89 int 90 initswap(void) 91 { 92 static int once = 0; 93 94 if (once) 95 return (1); 96 97 if ((kvnsw = kvm_getswapinfo(kd, kvmsw, NSWAP, 0)) < 0) { 98 error("systat: kvm_getswapinfo failed"); 99 return (0); 100 } 101 pathlen = 80 - 50 /* % */ - 5 /* Used */ - 5 /* Size */ - 3 /* space */; 102 dsinit(12); 103 procinit(); 104 once = 1; 105 106 return (1); 107 } 108 109 void 110 fetchswap(void) 111 { 112 113 okvnsw = kvnsw; 114 if ((kvnsw = kvm_getswapinfo(kd, kvmsw, NSWAP, 0)) < 0) { 115 error("systat: kvm_getswapinfo failed"); 116 return; 117 } 118 119 struct devinfo *tmp_dinfo; 120 121 tmp_dinfo = last_dev.dinfo; 122 last_dev.dinfo = cur_dev.dinfo; 123 cur_dev.dinfo = tmp_dinfo; 124 125 last_dev.snap_time = cur_dev.snap_time; 126 dsgetinfo(&cur_dev); 127 procgetinfo(); 128 } 129 130 void 131 labelswap(void) 132 { 133 134 werase(wnd); 135 136 dslabel(12, 0, LINES - DISKHIGHT - 1); 137 138 if (kvnsw <= 0) { 139 mvwprintw(wnd, 0, 0, "(swap not configured)"); 140 return; 141 } 142 143 mvwprintw(wnd, 0, 0, "%*s%5s %5s %s", 144 -pathlen, "Device/Path", "Size", "Used", 145 "|0% /10 /20 /30 /40 / 60\\ 70\\ 80\\ 90\\ 100|"); 146 } 147 148 void 149 showswap(void) 150 { 151 const char *name; 152 int count, i; 153 154 if (kvnsw != okvnsw) 155 labelswap(); 156 157 dsshow(12, 0, LINES - DISKHIGHT - 1, &cur_dev, &last_dev); 158 159 if (kvnsw <= 0) 160 return; 161 162 for (i = (kvnsw == 1 ? 0 : kvnsw); i >= 0; i--) { 163 name = i == kvnsw ? "Total" : kvmsw[i].ksw_devname; 164 mvwprintw(wnd, 1 + i, 0, "%-*.*s", pathlen, pathlen - 1, name); 165 166 sysputpage(wnd, i + 1, pathlen, 5, kvmsw[i].ksw_total, 0); 167 sysputpage(wnd, i + 1, pathlen + 5 + 1, 5, kvmsw[i].ksw_used, 168 0); 169 170 if (kvmsw[i].ksw_used > 0) { 171 count = 50 * kvmsw[i].ksw_used / kvmsw[i].ksw_total; 172 sysputXs(wnd, i + 1, pathlen + 5 + 1 + 5 + 1, count); 173 } 174 wclrtoeol(wnd); 175 } 176 count = kvnsw == 1 ? 2 : 3; 177 proclabel(kvnsw + count); 178 procshow(kvnsw + count, LINES - 5 - kvnsw + 3 - DISKHIGHT + 1, 179 kvmsw[kvnsw].ksw_total); 180 } 181