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 35 /* 36 * swapinfo - based on a program of the same name by Kevin Lahey 37 */ 38 39 #include <sys/param.h> 40 #include <sys/ioctl.h> 41 #include <sys/stat.h> 42 43 #include <kvm.h> 44 #include <nlist.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <unistd.h> 48 #include <string.h> 49 #include <err.h> 50 51 #include "systat.h" 52 #include "extern.h" 53 #include "devs.h" 54 55 static int pathlen; 56 57 WINDOW * 58 openswap(void) 59 { 60 61 return (subwin(stdscr, LINES - 3 - 1, 0, MAINWIN_ROW, 0)); 62 } 63 64 void 65 closeswap(WINDOW *w) 66 { 67 68 if (w == NULL) 69 return; 70 wclear(w); 71 wrefresh(w); 72 delwin(w); 73 } 74 75 /* 76 * The meat of all the swap stuff is stolen from pstat(8)'s 77 * swapmode(), which is based on a program called swapinfo written by 78 * Kevin Lahey <kml@rokkaku.atl.ga.us>. 79 */ 80 81 #define NSWAP 16 82 83 static struct kvm_swap kvmsw[NSWAP]; 84 static int kvnsw, okvnsw; 85 86 int 87 initswap(void) 88 { 89 static int once = 0; 90 91 if (once) 92 return (1); 93 94 if ((kvnsw = kvm_getswapinfo(kd, kvmsw, NSWAP, 0)) < 0) { 95 error("systat: kvm_getswapinfo failed"); 96 return (0); 97 } 98 pathlen = 80 - 50 /* % */ - 5 /* Used */ - 5 /* Size */ - 3 /* space */; 99 dsinit(12); 100 procinit(); 101 once = 1; 102 103 return (1); 104 } 105 106 void 107 fetchswap(void) 108 { 109 110 okvnsw = kvnsw; 111 if ((kvnsw = kvm_getswapinfo(kd, kvmsw, NSWAP, 0)) < 0) { 112 error("systat: kvm_getswapinfo failed"); 113 return; 114 } 115 116 struct devinfo *tmp_dinfo; 117 118 tmp_dinfo = last_dev.dinfo; 119 last_dev.dinfo = cur_dev.dinfo; 120 cur_dev.dinfo = tmp_dinfo; 121 122 last_dev.snap_time = cur_dev.snap_time; 123 dsgetinfo(&cur_dev); 124 procgetinfo(); 125 } 126 127 void 128 labelswap(void) 129 { 130 131 werase(wnd); 132 133 dslabel(12, 0, LINES - DISKHIGHT - 1); 134 135 if (kvnsw <= 0) { 136 mvwprintw(wnd, 0, 0, "(swap not configured)"); 137 return; 138 } 139 140 mvwprintw(wnd, 0, 0, "%*s%5s %5s %s", 141 -pathlen, "Device/Path", "Size", "Used", 142 "|0% /10 /20 /30 /40 / 60\\ 70\\ 80\\ 90\\ 100|"); 143 } 144 145 void 146 showswap(void) 147 { 148 const char *name; 149 int count, i; 150 151 if (kvnsw != okvnsw) 152 labelswap(); 153 154 dsshow(12, 0, LINES - DISKHIGHT - 1, &cur_dev, &last_dev); 155 156 if (kvnsw <= 0) 157 return; 158 159 for (i = (kvnsw == 1 ? 0 : kvnsw); i >= 0; i--) { 160 name = i == kvnsw ? "Total" : kvmsw[i].ksw_devname; 161 mvwprintw(wnd, 1 + i, 0, "%-*.*s", pathlen, pathlen - 1, name); 162 163 sysputpage(wnd, i + 1, pathlen, 5, kvmsw[i].ksw_total, 0); 164 sysputpage(wnd, i + 1, pathlen + 5 + 1, 5, kvmsw[i].ksw_used, 165 0); 166 167 if (kvmsw[i].ksw_used > 0) { 168 count = 50 * kvmsw[i].ksw_used / kvmsw[i].ksw_total; 169 sysputXs(wnd, i + 1, pathlen + 5 + 1 + 5 + 1, count); 170 } 171 wclrtoeol(wnd); 172 } 173 count = kvnsw == 1 ? 2 : 3; 174 proclabel(kvnsw + count); 175 procshow(kvnsw + count, LINES - 5 - kvnsw + 3 - DISKHIGHT + 1, 176 kvmsw[kvnsw].ksw_total); 177 } 178