Annotation of src/usr.bin/systat/swap.c, Revision 1.26
1.26 ! deraadt 1: /* $OpenBSD: swap.c,v 1.25 2014/11/23 04:34:48 guenther 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:
1.26 ! deraadt 34: #include <sys/types.h>
! 35: #include <sys/signal.h>
1.1 deraadt 36: #include <sys/conf.h>
37: #include <sys/ioctl.h>
38: #include <sys/stat.h>
1.11 weingart 39: #include <sys/swap.h>
1.1 deraadt 40:
41: #include <stdio.h>
42: #include <stdlib.h>
43: #include <string.h>
1.11 weingart 44: #include <errno.h>
1.1 deraadt 45: #include <unistd.h>
46:
47: #include "systat.h"
1.21 canacar 48:
1.1 deraadt 49:
1.11 weingart 50: static long blocksize;
51: static int hlen, nswap, rnswap;
52: static struct swapent *swap_devices;
1.1 deraadt 53:
1.21 canacar 54: void print_sw(void);
55: int read_sw(void);
56: int select_sw(void);
57: static void showswap(int i);
58: static void showtotal(void);
59:
60:
61: field_def fields_sw[] = {
62: {"DISK", 6, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0},
63: {"BLOCKS", 5, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
64: {"USED", 5, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
65: {"", 40, 80, 1, FLD_ALIGN_BAR, -1, 0, 0, 100},
66: };
67:
1.23 jasper 68: #define FLD_SW_NAME FIELD_ADDR(fields_sw,0)
69: #define FLD_SW_BLOCKS FIELD_ADDR(fields_sw,1)
70: #define FLD_SW_USED FIELD_ADDR(fields_sw,2)
71: #define FLD_SW_BAR FIELD_ADDR(fields_sw,3)
1.21 canacar 72:
73: /* Define views */
74: field_def *view_sw_0[] = {
75: FLD_SW_NAME, FLD_SW_BLOCKS, FLD_SW_USED, FLD_SW_BAR, NULL
76: };
77:
78:
79: /* Define view managers */
80: struct view_manager swap_mgr = {
81: "Swap", select_sw, read_sw, NULL, print_header,
82: print_sw, keyboard_callback, NULL, NULL
83: };
84:
85: field_view views_sw[] = {
86: {view_sw_0, "swap", '6', &swap_mgr},
87: {NULL, NULL, 0, NULL}
88: };
1.1 deraadt 89:
90:
1.9 millert 91: int
1.21 canacar 92: select_sw(void)
1.1 deraadt 93: {
1.21 canacar 94: if (swap_devices == NULL || nswap == 0)
95: num_disp = 1;
96: else
97: num_disp = nswap;
98: if (nswap > 1)
99: num_disp++;
100: return (0);
1.1 deraadt 101: }
102:
1.21 canacar 103: int
104: read_sw(void)
1.1 deraadt 105: {
1.21 canacar 106: num_disp = 1;
1.11 weingart 107:
108: nswap = swapctl(SWAP_NSWAP, 0, 0);
1.21 canacar 109:
1.11 weingart 110: if (nswap < 0)
111: error("error: %s", strerror(errno));
112: if (nswap == 0)
1.21 canacar 113: return 0;
1.1 deraadt 114:
1.11 weingart 115: if (swap_devices)
116: (void)free(swap_devices);
1.21 canacar 117:
1.20 deraadt 118: swap_devices = (struct swapent *)calloc(nswap, sizeof(*swap_devices));
1.11 weingart 119: if (swap_devices == NULL)
1.21 canacar 120: return 0;
1.11 weingart 121:
122: rnswap = swapctl(SWAP_STATS, (void *)swap_devices, nswap);
1.21 canacar 123: if (rnswap < 0 || nswap != rnswap)
124: return 0;
125:
126: num_disp = nswap;
127: if (nswap > 1)
128: num_disp++;
129:
130: return 0;
1.1 deraadt 131: }
132:
1.21 canacar 133:
1.1 deraadt 134: void
1.21 canacar 135: print_sw(void)
1.1 deraadt 136: {
1.21 canacar 137: int n, count = 0;
1.1 deraadt 138:
1.21 canacar 139: if (swap_devices == NULL || nswap == 0) {
140: print_fld_str(FLD_SW_BAR, "No swap devices");
1.11 weingart 141: return;
142: }
1.21 canacar 143:
144:
145: for (n = dispstart; n < num_disp; n++) {
146: if (n >= nswap)
147: showtotal();
148: else
149: showswap(n);
150: count++;
151: if (maxprint > 0 && count >= maxprint)
152: break;
153: }
154:
155: }
156:
157: int
158: initswap(void)
159: {
160: field_view *v;
161:
162: char *bs = getbsize(&hlen, &blocksize);
163:
164: FLD_SW_BLOCKS->title = strdup(bs);
165:
166: for (v = views_sw; v->name != NULL; v++)
167: add_view(v);
168:
169: return(1);
1.1 deraadt 170: }
171:
1.21 canacar 172:
173: static void
174: showswap(int i)
1.16 deraadt 175: {
1.22 canacar 176: int d, used, xsize;
1.11 weingart 177: struct swapent *sep;
178: char *p;
1.1 deraadt 179:
1.22 canacar 180: d = blocksize / 512;
1.11 weingart 181:
1.21 canacar 182: sep = &swap_devices[i];
183:
184: p = strrchr(sep->se_path, '/');
185: p = p ? p+1 : sep->se_path;
186:
187: print_fld_str(FLD_SW_NAME, p);
188:
189: xsize = sep->se_nblks;
190: used = sep->se_inuse;
191:
1.22 canacar 192: print_fld_uint(FLD_SW_BLOCKS, xsize / d);
193: print_fld_uint(FLD_SW_USED, used / d);
1.21 canacar 194: print_fld_bar(FLD_SW_BAR, 100 * used / xsize);
195:
196: end_line();
197: }
1.11 weingart 198:
1.21 canacar 199: static void
200: showtotal(void)
201: {
202: struct swapent *sep;
1.22 canacar 203: int d, i, avail, used, xsize, mfree;
1.11 weingart 204:
1.22 canacar 205: d = blocksize / 512;
206: mfree = avail = 0;
1.11 weingart 207:
1.21 canacar 208: for (sep = swap_devices, i = 0; i < nswap; i++, sep++) {
1.11 weingart 209: xsize = sep->se_nblks;
210: used = sep->se_inuse;
211: avail += xsize;
1.22 canacar 212: mfree += xsize - used;
1.1 deraadt 213: }
1.22 canacar 214: used = avail - mfree;
1.21 canacar 215:
216: print_fld_str(FLD_SW_NAME, "Total");
1.22 canacar 217: print_fld_uint(FLD_SW_BLOCKS, avail / d);
218: print_fld_uint(FLD_SW_USED, used / d);
1.21 canacar 219: print_fld_bar(FLD_SW_BAR, 100 * used / avail);
220:
221: end_line();
1.1 deraadt 222: }
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