xref: /netbsd/usr.bin/ktrace/subr.c (revision 6550d01e)
1 /*	$NetBSD: subr.c,v 1.16 2007/02/09 22:08:49 ad Exp $	*/
2 
3 /*-
4  * Copyright (c) 1988, 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. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)subr.c	8.2 (Berkeley) 4/28/95";
36 #else
37 __RCSID("$NetBSD: subr.c,v 1.16 2007/02/09 22:08:49 ad Exp $");
38 #endif
39 #endif /* not lint */
40 
41 #include <sys/param.h>
42 #include <sys/time.h>
43 #include <sys/uio.h>
44 #include <sys/ktrace.h>
45 
46 #include <stdio.h>
47 
48 #include "ktrace.h"
49 
50 int
51 getpoints(int facs, char *s)
52 {
53 	int fac;
54 	int add = 1;
55 
56 	/* Make -t-x equivalent to -t+-x since that is rather more useful */
57 	if (*s == '-' && (facs & ALL_POINTS) == 0)
58 		facs |= DEF_POINTS;
59 
60 	for (;;) {
61 		switch (*s++) {
62 		case 0:
63 			return facs;
64 		case 'A':
65 			fac = ALL_POINTS;
66 			break;
67 		case 'a':
68 			fac = KTRFAC_EXEC_ARG;
69 			break;
70 		case 'c':
71 			fac = KTRFAC_SYSCALL | KTRFAC_SYSRET;
72 			break;
73 		case 'e':
74 			fac = KTRFAC_EMUL;
75 			break;
76 		case 'i':
77 			fac = KTRFAC_GENIO;
78 			break;
79 		case 'n':
80 			fac = KTRFAC_NAMEI;
81 			break;
82 		case 'm':
83 			fac = KTRFAC_MMSG;
84 			break;
85 		case 'l':
86 			fac = KTRFAC_MOOL;
87 			break;
88 		case 's':
89 			fac = KTRFAC_PSIG;
90 			break;
91 		case 'u':
92 			fac = KTRFAC_USER;
93 			break;
94 		case 'S':
95 			fac = KTRFAC_MIB;
96 			break;
97 		case 'v':
98 			fac = KTRFAC_EXEC_ENV;
99 			break;
100 		case 'w':
101 			fac = KTRFAC_CSW;
102 			break;
103 		case '+':
104 			if (!add) {
105 				add = 1;
106 				continue;
107 			}
108 			fac = DEF_POINTS;
109 			break;
110 		case '-':
111 			add = 0;
112 			continue;
113 		default:
114 			return (-1);
115 		}
116 		if (add)
117 			facs |= fac;
118 		else
119 			facs &= ~fac;
120 	}
121 }
122