1 /* $NetBSD: swaplist.c,v 1.19 2023/12/11 12:47:24 mlelstv Exp $ */
2
3 /*
4 * Copyright (c) 1997 Matthew R. Green
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28 #include <sys/cdefs.h>
29
30 #ifndef lint
31 __RCSID("$NetBSD: swaplist.c,v 1.19 2023/12/11 12:47:24 mlelstv Exp $");
32 #endif
33
34
35 #include <sys/param.h>
36 #include <sys/stat.h>
37 #include <sys/swap.h>
38
39 #include <unistd.h>
40 #include <err.h>
41 #include <errno.h>
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <inttypes.h>
46 #include <util.h>
47
48 #define dbtoqb(b) dbtob((int64_t)(b))
49
50 /*
51 * NOTE: This file is separate from swapctl.c so that pstat can grab it.
52 */
53
54 #include "swapctl.h"
55
56 int
list_swap(int pri,int kflag,int pflag,int tflag,int dolong,int hflag)57 list_swap(int pri, int kflag, int pflag, int tflag, int dolong, int hflag)
58 {
59 struct swapent *sep, *fsep;
60 long blocksize;
61 char szbuf[5], usbuf[5], avbuf[5]; /* size, used, avail */
62 const char *header, *suff;
63 size_t l;
64 int hlen, size, inuse, ncounted, pathmax;
65 int rnswap, nswap = swapctl(SWAP_NSWAP, 0, 0), i;
66 int64_t totalsize, totalinuse;
67
68 if (nswap < 1) {
69 puts("no swap devices configured");
70 return 0;
71 }
72
73 fsep = sep = (struct swapent *)malloc(nswap * sizeof(*sep));
74 if (sep == NULL)
75 err(1, "malloc");
76 rnswap = swapctl(SWAP_STATS, (void *)sep, nswap);
77 if (rnswap < 0)
78 err(1, "SWAP_STATS");
79 if (nswap != rnswap)
80 warnx("SWAP_STATS different to SWAP_NSWAP (%d != %d)",
81 rnswap, nswap);
82
83 pathmax = 11;
84 switch(kflag) {
85 case 1:
86 header = "1K-blocks";
87 blocksize = 1024;
88 suff = "KBytes";
89 break;
90 case 2:
91 suff = "MBytes";
92 header = "1M-blocks";
93 blocksize = 1024 * 1024;
94 break;
95 case 3:
96 header = "1G-blocks";
97 blocksize = 1024 * 1024 * 1024;
98 suff = "GBytes";
99 break;
100 default:
101 suff = "blocks";
102 if (!hflag) {
103 header = getbsize(&hlen, &blocksize);
104 } else {
105 header = "Size";
106 blocksize = 1; suff = ""; /* unused */
107 }
108 break;
109 }
110 if (hflag || kflag)
111 hlen = strlen(header);
112
113 if (dolong && tflag == 0) {
114 for (i = rnswap; i-- > 0; sep++)
115 if ((size_t)pathmax < (l = strlen(sep->se_path)))
116 pathmax = l;
117 sep = fsep;
118 (void)printf("%-*s %*s %8s %8s %8s %s\n",
119 pathmax, "Device", hlen, header,
120 "Used", "Avail", "Capacity", "Priority");
121 }
122 totalsize = totalinuse = ncounted = 0;
123 for (; rnswap-- > 0; sep++) {
124 if (pflag && sep->se_priority != pri)
125 continue;
126 ncounted++;
127 size = sep->se_nblks;
128 inuse = sep->se_inuse;
129 totalsize += size;
130 totalinuse += inuse;
131
132 if (dolong && tflag == 0) {
133 if (hflag == 0) {
134 (void)printf("%-*s %*ld ", pathmax, sep->se_path, hlen,
135 (long)(dbtoqb(size) / blocksize));
136
137 (void)printf("%8ld %8ld %5.0f%% %d\n",
138 (long)(dbtoqb(inuse) / blocksize),
139 (long)(dbtoqb(size - inuse) / blocksize),
140 (double)inuse / (double)size * 100.0,
141 sep->se_priority);
142 } else {
143 if ((humanize_number(szbuf, sizeof(szbuf), (dbtoqb(size)),
144 "", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
145 err(1, "humanize_number");
146 if ((humanize_number(usbuf, sizeof(usbuf), (dbtoqb(inuse)),
147 "", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
148 err(1, "humanize_number");
149 if ((humanize_number(avbuf, sizeof(avbuf), (dbtoqb(size-inuse)),
150 "", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
151 err(1, "humanize_number");
152 (void)printf("%-*s %*s ", pathmax, sep->se_path, hlen, szbuf);
153
154 (void)printf("%8s %8s %5.0f%% %d\n",
155 usbuf, avbuf,
156 (double)inuse / (double)size * 100.0,
157 sep->se_priority);
158 }
159 }
160 }
161 if (tflag) {
162 if (hflag) {
163 if ((humanize_number(usbuf, sizeof(usbuf), (dbtoqb(totalinuse)),
164 "", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
165 err(1, "humanize_number");
166 if ((humanize_number(szbuf, sizeof(szbuf), (dbtoqb(totalsize)),
167 "", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
168 err(1, "humanize_number");
169 (void)printf("%s/%s swap space\n", usbuf, szbuf);
170 } else {
171 (void)printf("%ld/%ld %s swap space\n",
172 (long)(dbtoqb(totalinuse) / blocksize),
173 (long)(dbtoqb(totalsize) / blocksize),
174 suff);
175 }
176 }
177 else if (dolong == 0) {
178 if (hflag) {
179 if ((humanize_number(szbuf, sizeof(szbuf), (dbtoqb(totalsize)),
180 "", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
181 err(1, "humanize_number");
182 if ((humanize_number(usbuf, sizeof(usbuf), (dbtoqb(totalinuse)),
183 "", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
184 err(1, "humanize_number");
185 if ((humanize_number(avbuf, sizeof(avbuf), (dbtoqb(totalsize-totalinuse)),
186 "", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
187 err(1, "humanize_number");
188 (void)printf("total: %s allocated, %s used, %s available.\n",
189 szbuf, usbuf, avbuf);
190 } else {
191 printf("total: %ld %s allocated, %ld %s used, "
192 "%ld %s available\n",
193 (long)(dbtoqb(totalsize) / blocksize), suff,
194 (long)(dbtoqb(totalinuse) / blocksize), suff,
195 (long)(dbtoqb(totalsize - totalinuse) / blocksize), suff);
196 }
197 } else if (ncounted > 1) {
198 if (hflag) {
199 if ((humanize_number(szbuf, sizeof(szbuf), (dbtoqb(totalsize)),
200 "", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
201 err(1, "humanize_number");
202 if ((humanize_number(usbuf, sizeof(usbuf), (dbtoqb(totalinuse)),
203 "", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
204 err(1, "humanize_number");
205 if ((humanize_number(avbuf, sizeof(avbuf), (dbtoqb(totalsize-totalinuse)),
206 "", HN_AUTOSCALE, (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
207 err(1, "humanize_number");
208 (void)printf("%-*s %*s %8s %8s %5.0f%%\n", pathmax, "Total",
209 hlen, szbuf, usbuf, avbuf,
210 (double)(totalinuse) / (double)totalsize * 100.0);
211 } else {
212 (void)printf("%-*s %*ld %8ld %8ld %5.0f%%\n", pathmax, "Total",
213 hlen,
214 (long)(dbtoqb(totalsize) / blocksize),
215 (long)(dbtoqb(totalinuse) / blocksize),
216 (long)(dbtoqb(totalsize - totalinuse) / blocksize),
217 (double)(totalinuse) / (double)totalsize * 100.0);
218 }
219 }
220 if (fsep)
221 (void)free(fsep);
222
223 return 1;
224 }
225