Annotation of src/usr.bin/systat/swap.c, Revision 1.18
1.18 ! deraadt 1: /* $OpenBSD: swap.c,v 1.17 2003/06/03 02:56:17 millert 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:
34: #ifndef lint
35: #if 0
36: static char sccsid[] = "@(#)swap.c 8.3 (Berkeley) 4/29/95";
37: #endif
1.18 ! deraadt 38: static char rcsid[] = "$OpenBSD: swap.c,v 1.17 2003/06/03 02:56:17 millert Exp $";
1.1 deraadt 39: #endif /* not lint */
1.13 pvalchev 40:
1.11 weingart 41: #include <sys/cdefs.h>
1.1 deraadt 42: #include <sys/param.h>
43: #include <sys/buf.h>
44: #include <sys/conf.h>
45: #include <sys/ioctl.h>
46: #include <sys/stat.h>
1.11 weingart 47: #include <sys/swap.h>
1.1 deraadt 48:
49: #include <stdio.h>
50: #include <stdlib.h>
51: #include <string.h>
1.11 weingart 52: #include <errno.h>
1.1 deraadt 53: #include <unistd.h>
54:
55: #include "systat.h"
56: #include "extern.h"
57:
1.11 weingart 58: static long blocksize;
59: static int hlen, nswap, rnswap;
60: static int first = 1;
61: static struct swapent *swap_devices;
1.1 deraadt 62:
63: WINDOW *
1.16 deraadt 64: openswap(void)
1.1 deraadt 65: {
66: return (subwin(stdscr, LINES-5-1, 0, 5, 0));
67: }
68:
69: void
1.16 deraadt 70: closeswap(WINDOW *w)
1.1 deraadt 71: {
72: if (w == NULL)
73: return;
74: wclear(w);
75: wrefresh(w);
76: delwin(w);
77: }
78:
1.11 weingart 79: /* do nothing */
1.9 millert 80: int
1.16 deraadt 81: initswap(void)
1.1 deraadt 82: {
83: return (1);
84: }
85:
86: void
1.16 deraadt 87: fetchswap(void)
1.1 deraadt 88: {
1.11 weingart 89: int update_label = 0;
90:
91: first = 0;
92: nswap = swapctl(SWAP_NSWAP, 0, 0);
93: if (nswap < 0)
94: error("error: %s", strerror(errno));
95: if (nswap == 0)
96: return;
97: update_label = (nswap != rnswap);
1.1 deraadt 98:
1.11 weingart 99: if (swap_devices)
100: (void)free(swap_devices);
101: swap_devices = (struct swapent *)malloc(nswap * sizeof(*swap_devices));
102: if (swap_devices == NULL)
103: /* XXX */ ; /* XXX systat doesn't do errors! */
104:
105: rnswap = swapctl(SWAP_STATS, (void *)swap_devices, nswap);
106: if (nswap < 0)
107: /* XXX */ ; /* XXX systat doesn't do errors! */
108: if (nswap != rnswap)
109: /* XXX */ ; /* XXX systat doesn't do errors! */
110: if (update_label)
111: labelswap();
1.1 deraadt 112: }
113:
114: void
1.16 deraadt 115: labelswap(void)
1.1 deraadt 116: {
1.11 weingart 117: char *header;
118: int row;
1.1 deraadt 119:
120: row = 0;
1.11 weingart 121: wmove(wnd, row, 0);
122: wclrtobot(wnd);
123: if (first)
124: fetchswap();
125: if (nswap == 0) {
126: mvwprintw(wnd, row++, 0, "No swap");
127: return;
128: }
1.1 deraadt 129: header = getbsize(&hlen, &blocksize);
130: mvwprintw(wnd, row++, 0, "%-5s%*s%9s %55s",
131: "Disk", hlen, header, "Used",
132: "/0% /10% /20% /30% /40% /50% /60% /70% /80% /90% /100%");
133: }
134:
135: void
1.16 deraadt 136: showswap(void)
137: {
1.11 weingart 138: int col, div, i, j, avail, used, xsize, free;
139: struct swapent *sep;
140: char *p;
1.1 deraadt 141:
142: div = blocksize / 512;
1.11 weingart 143: free = avail = 0;
144: for (sep = swap_devices, i = 0; i < nswap; i++, sep++) {
145: if (sep == NULL)
146: continue;
147:
148: p = strrchr(sep->se_path, '/');
149: p = p ? p+1 : sep->se_path;
150:
151: mvwprintw(wnd, i + 1, 0, "%-5s", p);
152:
1.1 deraadt 153: col = 5;
1.11 weingart 154: mvwprintw(wnd, i + 1, col, "%*d", hlen, sep->se_nblks / div);
155:
1.1 deraadt 156: col += hlen;
1.11 weingart 157: xsize = sep->se_nblks;
158: used = sep->se_inuse;
159: avail += xsize;
160: free += xsize - used;
1.1 deraadt 161: mvwprintw(wnd, i + 1, col, "%9d ", used / div);
162: for (j = (100 * used / xsize + 1) / 2; j > 0; j--)
163: waddch(wnd, 'X');
1.11 weingart 164: wclrtoeol(wnd);
1.1 deraadt 165: }
1.11 weingart 166: /* do total if necessary */
167: if (nswap > 1) {
168: used = avail - free;
1.1 deraadt 169: mvwprintw(wnd, i + 1, 0, "%-5s%*d%9d ",
170: "Total", hlen, avail / div, used / div);
171: for (j = (100 * used / avail + 1) / 2; j > 0; j--)
172: waddch(wnd, 'X');
1.11 weingart 173: wclrtoeol(wnd);
1.1 deraadt 174: }
175: }
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