Annotation of src/usr.bin/systat/swap.c, Revision 1.23
1.23 ! jasper 1: /* $OpenBSD: swap.c,v 1.22 2008/12/07 02:56:06 canacar Exp $ */
1.11 weingart 2: /* $NetBSD: swap.c,v 1.9 1998/12/26 07:05:08 marc Exp $ */
1.1 deraadt 3:
4: /*-
1.11 weingart 5: * Copyright (c) 1997 Matthew R. Green. All rights reserved.
1.1 deraadt 6: * Copyright (c) 1980, 1992, 1993
7: * The Regents of the University of California. All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
1.17 millert 17: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: */
33:
1.11 weingart 34: #include <sys/cdefs.h>
1.1 deraadt 35: #include <sys/param.h>
36: #include <sys/buf.h>
37: #include <sys/conf.h>
38: #include <sys/ioctl.h>
39: #include <sys/stat.h>
1.11 weingart 40: #include <sys/swap.h>
1.1 deraadt 41:
42: #include <stdio.h>
43: #include <stdlib.h>
44: #include <string.h>
1.11 weingart 45: #include <errno.h>
1.1 deraadt 46: #include <unistd.h>
47:
48: #include "systat.h"
1.21 canacar 49:
1.1 deraadt 50:
1.11 weingart 51: static long blocksize;
52: static int hlen, nswap, rnswap;
53: static struct swapent *swap_devices;
1.1 deraadt 54:
1.21 canacar 55: void print_sw(void);
56: int read_sw(void);
57: int select_sw(void);
58: static void showswap(int i);
59: static void showtotal(void);
60:
61:
62: field_def fields_sw[] = {
63: {"DISK", 6, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0},
64: {"BLOCKS", 5, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
65: {"USED", 5, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
66: {"", 40, 80, 1, FLD_ALIGN_BAR, -1, 0, 0, 100},
67: };
68:
1.23 ! jasper 69: #define FLD_SW_NAME FIELD_ADDR(fields_sw,0)
! 70: #define FLD_SW_BLOCKS FIELD_ADDR(fields_sw,1)
! 71: #define FLD_SW_USED FIELD_ADDR(fields_sw,2)
! 72: #define FLD_SW_BAR FIELD_ADDR(fields_sw,3)
1.21 canacar 73:
74: /* Define views */
75: field_def *view_sw_0[] = {
76: FLD_SW_NAME, FLD_SW_BLOCKS, FLD_SW_USED, FLD_SW_BAR, NULL
77: };
78:
79:
80: /* Define view managers */
81: struct view_manager swap_mgr = {
82: "Swap", select_sw, read_sw, NULL, print_header,
83: print_sw, keyboard_callback, NULL, NULL
84: };
85:
86: field_view views_sw[] = {
87: {view_sw_0, "swap", '6', &swap_mgr},
88: {NULL, NULL, 0, NULL}
89: };
1.1 deraadt 90:
91:
1.9 millert 92: int
1.21 canacar 93: select_sw(void)
1.1 deraadt 94: {
1.21 canacar 95: if (swap_devices == NULL || nswap == 0)
96: num_disp = 1;
97: else
98: num_disp = nswap;
99: if (nswap > 1)
100: num_disp++;
101: return (0);
1.1 deraadt 102: }
103:
1.21 canacar 104: int
105: read_sw(void)
1.1 deraadt 106: {
1.21 canacar 107: num_disp = 1;
1.11 weingart 108:
109: nswap = swapctl(SWAP_NSWAP, 0, 0);
1.21 canacar 110:
1.11 weingart 111: if (nswap < 0)
112: error("error: %s", strerror(errno));
113: if (nswap == 0)
1.21 canacar 114: return 0;
1.1 deraadt 115:
1.11 weingart 116: if (swap_devices)
117: (void)free(swap_devices);
1.21 canacar 118:
1.20 deraadt 119: swap_devices = (struct swapent *)calloc(nswap, sizeof(*swap_devices));
1.11 weingart 120: if (swap_devices == NULL)
1.21 canacar 121: return 0;
1.11 weingart 122:
123: rnswap = swapctl(SWAP_STATS, (void *)swap_devices, nswap);
1.21 canacar 124: if (rnswap < 0 || nswap != rnswap)
125: return 0;
126:
127: num_disp = nswap;
128: if (nswap > 1)
129: num_disp++;
130:
131: return 0;
1.1 deraadt 132: }
133:
1.21 canacar 134:
1.1 deraadt 135: void
1.21 canacar 136: print_sw(void)
1.1 deraadt 137: {
1.21 canacar 138: int n, count = 0;
1.1 deraadt 139:
1.21 canacar 140: if (swap_devices == NULL || nswap == 0) {
141: print_fld_str(FLD_SW_BAR, "No swap devices");
1.11 weingart 142: return;
143: }
1.21 canacar 144:
145:
146: for (n = dispstart; n < num_disp; n++) {
147: if (n >= nswap)
148: showtotal();
149: else
150: showswap(n);
151: count++;
152: if (maxprint > 0 && count >= maxprint)
153: break;
154: }
155:
156: }
157:
158: int
159: initswap(void)
160: {
161: field_view *v;
162:
163: char *bs = getbsize(&hlen, &blocksize);
164:
165: FLD_SW_BLOCKS->title = strdup(bs);
166:
167: for (v = views_sw; v->name != NULL; v++)
168: add_view(v);
169:
170: return(1);
1.1 deraadt 171: }
172:
1.21 canacar 173:
174: static void
175: showswap(int i)
1.16 deraadt 176: {
1.22 canacar 177: int d, used, xsize;
1.11 weingart 178: struct swapent *sep;
179: char *p;
1.1 deraadt 180:
1.22 canacar 181: d = blocksize / 512;
1.11 weingart 182:
1.21 canacar 183: sep = &swap_devices[i];
184:
185: p = strrchr(sep->se_path, '/');
186: p = p ? p+1 : sep->se_path;
187:
188: print_fld_str(FLD_SW_NAME, p);
189:
190: xsize = sep->se_nblks;
191: used = sep->se_inuse;
192:
1.22 canacar 193: print_fld_uint(FLD_SW_BLOCKS, xsize / d);
194: print_fld_uint(FLD_SW_USED, used / d);
1.21 canacar 195: print_fld_bar(FLD_SW_BAR, 100 * used / xsize);
196:
197: end_line();
198: }
1.11 weingart 199:
1.21 canacar 200: static void
201: showtotal(void)
202: {
203: struct swapent *sep;
1.22 canacar 204: int d, i, avail, used, xsize, mfree;
1.11 weingart 205:
1.22 canacar 206: d = blocksize / 512;
207: mfree = avail = 0;
1.11 weingart 208:
1.21 canacar 209: for (sep = swap_devices, i = 0; i < nswap; i++, sep++) {
1.11 weingart 210: xsize = sep->se_nblks;
211: used = sep->se_inuse;
212: avail += xsize;
1.22 canacar 213: mfree += xsize - used;
1.1 deraadt 214: }
1.22 canacar 215: used = avail - mfree;
1.21 canacar 216:
217: print_fld_str(FLD_SW_NAME, "Total");
1.22 canacar 218: print_fld_uint(FLD_SW_BLOCKS, avail / d);
219: print_fld_uint(FLD_SW_USED, used / d);
1.21 canacar 220: print_fld_bar(FLD_SW_BAR, 100 * used / avail);
221:
222: end_line();
1.1 deraadt 223: }
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