1 /* $OpenBSD: swaplist.c,v 1.8 2011/06/24 21:02:09 jasper Exp $ */ 2 /* $NetBSD: swaplist.c,v 1.8 1998/10/08 10:00:31 mrg Exp $ */ 3 4 /* 5 * Copyright (c) 1997 Matthew R. Green 6 * All rights reserved. 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. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/param.h> 33 #include <sys/swap.h> 34 35 #include <err.h> 36 #include <inttypes.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <unistd.h> 41 42 #include "swapctl.h" 43 44 #define dbtoqb(b) dbtob((int64_t)(b)) 45 46 void 47 list_swap(int pri, int kflag, int pflag, int dolong) 48 { 49 struct swapent *sep, *fsep; 50 long blocksize; 51 char *header; 52 size_t l; 53 int hlen, totalsize, size, totalinuse, inuse, ncounted, pathmax; 54 int rnswap, nswap, i; 55 56 nswap = swapctl(SWAP_NSWAP, 0, 0); 57 if (nswap < 1) 58 errx(1, "no swap devices configured"); 59 60 fsep = sep = (struct swapent *)calloc(nswap, sizeof(*sep)); 61 if (sep == NULL) 62 err(1, "calloc"); 63 rnswap = swapctl(SWAP_STATS, (void *)sep, nswap); 64 if (rnswap < 0) 65 err(1, "SWAP_STATS"); 66 if (nswap != rnswap) 67 warnx("SWAP_STATS different to SWAP_NSWAP (%d != %d)", 68 rnswap, nswap); 69 70 pathmax = 11; 71 if (kflag) { 72 header = "1K-blocks"; 73 blocksize = 1024; 74 hlen = strlen(header); 75 } else 76 header = getbsize(&hlen, &blocksize); 77 78 if (dolong) { 79 for (i = rnswap; i-- > 0; sep++) 80 if (pathmax < (l = strlen(sep->se_path))) 81 pathmax = l; 82 sep = fsep; 83 (void)printf("%-*s %*s %8s %8s %8s %s\n", 84 pathmax, "Device", hlen, header, 85 "Used", "Avail", "Capacity", "Priority"); 86 } 87 totalsize = totalinuse = ncounted = 0; 88 for (; rnswap-- > 0; sep++) { 89 if (pflag && sep->se_priority != pri) 90 continue; 91 ncounted++; 92 size = sep->se_nblks; 93 inuse = sep->se_inuse; 94 totalsize += size; 95 totalinuse += inuse; 96 97 if (dolong) { 98 (void)printf("%-*s %*ld ", pathmax, sep->se_path, hlen, 99 (long)(dbtoqb(size) / blocksize)); 100 101 (void)printf("%8ld %8ld %5.0f%% %d\n", 102 (long)(dbtoqb(inuse) / blocksize), 103 (long)(dbtoqb(size - inuse) / blocksize), 104 (double)inuse / (double)size * 100.0, 105 sep->se_priority); 106 } 107 } 108 if (dolong == 0) 109 printf("total: %ld %*s allocated, %ld used, " 110 "%ld available\n", 111 (long)(dbtoqb(totalsize) / blocksize), 112 hlen, header, 113 (long)(dbtoqb(totalinuse) / blocksize), 114 (long)(dbtoqb(totalsize - totalinuse) / blocksize)); 115 else if (ncounted > 1) 116 (void)printf("%-*s %*ld %8ld %8ld %5.0f%%\n", pathmax, "Total", 117 hlen, 118 (long)(dbtoqb(totalsize) / blocksize), 119 (long)(dbtoqb(totalinuse) / blocksize), 120 (long)(dbtoqb(totalsize - totalinuse) / blocksize), 121 (double)(totalinuse) / (double)totalsize * 100.0); 122 if (fsep) 123 free(fsep); 124 } 125