Annotation of src/usr.bin/systat/disks.c, Revision 1.1.1.1
1.1 deraadt 1: /* $NetBSD: disks.c,v 1.2 1995/01/20 08:51:53 jtc Exp $ */
2:
3: /*-
4: * Copyright (c) 1980, 1992, 1993
5: * The Regents of the University of California. 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: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef lint
37: #if 0
38: static char sccsid[] = "@(#)disks.c 8.1 (Berkeley) 6/6/93";
39: #endif
40: static char rcsid[] = "$NetBSD: disks.c,v 1.2 1995/01/20 08:51:53 jtc Exp $";
41: #endif /* not lint */
42:
43: #include <sys/types.h>
44: #include <sys/buf.h>
45:
46: #include <nlist.h>
47: #include <ctype.h>
48: #include <paths.h>
49: #include <string.h>
50: #include <stdlib.h>
51: #include "systat.h"
52: #include "extern.h"
53:
54: static void dkselect __P((char *, int, int []));
55: static int read_names __P((void));
56:
57: static struct nlist namelist[] = {
58: #define X_DK_NDRIVE 0
59: { "_dk_ndrive" },
60: #define X_DK_WPMS 1
61: { "_dk_wpms" },
62: #ifdef vax
63: #define X_MBDINIT (X_DK_WPMS+1)
64: { "_mbdinit" },
65: #define X_UBDINIT (X_DK_WPMS+2)
66: { "_ubdinit" },
67: #endif
68: #ifdef sun
69: #define X_MBDINIT (X_DK_WPMS+1)
70: { "_mbdinit" },
71: #endif
72: #ifdef tahoe
73: #define X_VBDINIT (X_DK_WPMS+1)
74: { "_vbdinit" },
75: #endif
76: #if defined(hp300) || defined(luna68k)
77: #define X_HPDINIT (X_DK_WPMS+1)
78: { "_hp_dinit" },
79: #endif
80: #ifdef mips
81: #define X_SCSI_DINIT (X_DK_WPMS+1)
82: { "_scsi_dinit" },
83: #endif
84: { "" },
85: };
86:
87: float *dk_mspw;
88: int dk_ndrive, *dk_select;
89: char **dr_name;
90:
91: #include "names.c" /* XXX */
92:
93: int
94: dkinit()
95: {
96: register int i;
97: register char *cp;
98: static int once = 0;
99: static char buf[1024];
100:
101: if (once)
102: return(1);
103:
104: if (kvm_nlist(kd, namelist)) {
105: nlisterr(namelist);
106: return(0);
107: }
108: if (namelist[X_DK_NDRIVE].n_value == 0) {
109: error("dk_ndrive undefined in kernel");
110: return(0);
111: }
112: NREAD(X_DK_NDRIVE, &dk_ndrive, LONG);
113: if (dk_ndrive <= 0) {
114: error("dk_ndrive=%d according to %s", dk_ndrive, _PATH_UNIX);
115: return(0);
116: }
117: dk_mspw = (float *)calloc(dk_ndrive, sizeof (float));
118: {
119: long *wpms = (long *)calloc(dk_ndrive, sizeof(long));
120: KREAD(NPTR(X_DK_WPMS), wpms, dk_ndrive * sizeof (long));
121: for (i = 0; i < dk_ndrive; i++)
122: *(dk_mspw + i) = (*(wpms + i) == 0)? 0.0:
123: (float) 1.0 / *(wpms + i);
124: free(wpms);
125: }
126: dr_name = (char **)calloc(dk_ndrive, sizeof (char *));
127: dk_select = (int *)calloc(dk_ndrive, sizeof (int));
128: for (cp = buf, i = 0; i < dk_ndrive; i++) {
129: dr_name[i] = cp;
130: sprintf(dr_name[i], "dk%d", i);
131: cp += strlen(dr_name[i]) + 1;
132: if (dk_mspw[i] != 0.0)
133: dk_select[i] = 1;
134: }
135: if (!read_names()) {
136: free(dr_name);
137: free(dk_select);
138: free(dk_mspw);
139: return(0);
140: }
141: once = 1;
142: return(1);
143: }
144:
145: int
146: dkcmd(cmd, args)
147: char *cmd, *args;
148: {
149: if (prefix(cmd, "display") || prefix(cmd, "add")) {
150: dkselect(args, 1, dk_select);
151: return (1);
152: }
153: if (prefix(cmd, "ignore") || prefix(cmd, "delete")) {
154: dkselect(args, 0, dk_select);
155: return (1);
156: }
157: if (prefix(cmd, "drives")) {
158: register int i;
159:
160: move(CMDLINE, 0); clrtoeol();
161: for (i = 0; i < dk_ndrive; i++)
162: if (dk_mspw[i] != 0.0)
163: printw("%s ", dr_name[i]);
164: return (1);
165: }
166: return (0);
167: }
168:
169: static void
170: dkselect(args, truefalse, selections)
171: char *args;
172: int truefalse, selections[];
173: {
174: register char *cp;
175: register int i;
176: char *index();
177:
178: cp = index(args, '\n');
179: if (cp)
180: *cp = '\0';
181: for (;;) {
182: for (cp = args; *cp && isspace(*cp); cp++)
183: ;
184: args = cp;
185: for (; *cp && !isspace(*cp); cp++)
186: ;
187: if (*cp)
188: *cp++ = '\0';
189: if (cp - args == 0)
190: break;
191: for (i = 0; i < dk_ndrive; i++)
192: if (strcmp(args, dr_name[i]) == 0) {
193: if (dk_mspw[i] != 0.0)
194: selections[i] = truefalse;
195: else
196: error("%s: drive not configured",
197: dr_name[i]);
198: break;
199: }
200: if (i >= dk_ndrive)
201: error("%s: unknown drive", args);
202: args = cp;
203: }
204: }
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