Annotation of src/usr.bin/ktrace/ktrace.c, Revision 1.12
1.12 ! deraadt 1: /* $OpenBSD: ktrace.c,v 1.11 2001/08/18 00:48:57 espie Exp $ */
1.1 deraadt 2: /* $NetBSD: ktrace.c,v 1.4 1995/08/31 23:01:44 jtc Exp $ */
3:
4: /*-
5: * Copyright (c) 1988, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1988, 1993\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)ktrace.c 8.2 (Berkeley) 4/28/95";
46: #endif
1.12 ! deraadt 47: static char *rcsid = "$OpenBSD: ktrace.c,v 1.11 2001/08/18 00:48:57 espie Exp $";
1.1 deraadt 48: #endif /* not lint */
49:
50: #include <sys/param.h>
51: #include <sys/stat.h>
52: #include <sys/time.h>
53: #include <sys/errno.h>
54: #include <sys/uio.h>
55: #include <sys/ktrace.h>
56:
57: #include <err.h>
1.8 millert 58: #include <fcntl.h>
1.10 deraadt 59: #include <stdlib.h>
1.1 deraadt 60: #include <stdio.h>
61: #include <unistd.h>
62:
63: #include "ktrace.h"
1.11 espie 64: #include "extern.h"
1.1 deraadt 65:
1.11 espie 66: static int rpid __P((const char *));
67: static void no_ktrace __P((int));
68: static void usage __P((void));
1.1 deraadt 69:
1.10 deraadt 70: int
1.1 deraadt 71: main(argc, argv)
72: int argc;
73: char **argv;
74: {
75: enum { NOTSET, CLEAR, CLEARALL } clear;
1.10 deraadt 76: int append, ch, fd, inherit, ops, pidset, trpoints;
77: pid_t pid;
1.1 deraadt 78: char *tracefile;
1.3 deraadt 79: mode_t omask;
1.6 angelos 80: struct stat sb;
1.1 deraadt 81:
82: clear = NOTSET;
83: append = ops = pidset = inherit = 0;
84: trpoints = DEF_POINTS;
85: tracefile = DEF_TRACEFILE;
1.4 millert 86: while ((ch = getopt(argc,argv,"aCcdf:g:ip:t:")) != -1)
1.1 deraadt 87: switch((char)ch) {
88: case 'a':
89: append = 1;
90: break;
91: case 'C':
92: clear = CLEARALL;
93: pidset = 1;
94: break;
95: case 'c':
96: clear = CLEAR;
97: break;
98: case 'd':
99: ops |= KTRFLAG_DESCEND;
100: break;
101: case 'f':
102: tracefile = optarg;
103: break;
104: case 'g':
105: pid = -rpid(optarg);
106: pidset = 1;
107: break;
108: case 'i':
109: inherit = 1;
110: break;
111: case 'p':
112: pid = rpid(optarg);
113: pidset = 1;
114: break;
115: case 't':
116: trpoints = getpoints(optarg);
117: if (trpoints < 0) {
118: warnx("unknown facility in %s", optarg);
119: usage();
120: }
121: break;
122: default:
123: usage();
124: }
125: argv += optind;
126: argc -= optind;
127:
1.11 espie 128: if ((pidset && *argv) || (!pidset && !*argv))
1.1 deraadt 129: usage();
130:
131: if (inherit)
132: trpoints |= KTRFAC_INHERIT;
133:
134: (void)signal(SIGSYS, no_ktrace);
135: if (clear != NOTSET) {
136: if (clear == CLEARALL) {
137: ops = KTROP_CLEAR | KTRFLAG_DESCEND;
138: trpoints = ALL_POINTS;
139: pid = 1;
140: } else
141: ops |= pid ? KTROP_CLEAR : KTROP_CLEARFILE;
142:
143: if (ktrace(tracefile, ops, trpoints, pid) < 0)
1.9 millert 144: err(1, "%s", tracefile);
1.1 deraadt 145: exit(0);
146: }
147:
1.3 deraadt 148: omask = umask(S_IRWXG|S_IRWXO);
1.5 deraadt 149: if (append) {
150: if ((fd = open(tracefile, O_CREAT | O_WRONLY, DEFFILEMODE)) < 0)
1.9 millert 151: err(1, "%s", tracefile);
1.5 deraadt 152: if (fstat(fd, &sb) != 0 || sb.st_uid != getuid())
153: errx(1, "Refuse to append to %s: not owned by you.",
154: tracefile);
155: } else {
156: if (unlink(tracefile) == -1 && errno != ENOENT)
157: err(1, "unlink %s", tracefile);
158: if ((fd = open(tracefile, O_CREAT | O_EXCL | O_WRONLY,
159: DEFFILEMODE)) < 0)
1.9 millert 160: err(1, "%s", tracefile);
1.5 deraadt 161: }
1.3 deraadt 162: (void)umask(omask);
1.1 deraadt 163: (void)close(fd);
164:
165: if (*argv) {
166: if (ktrace(tracefile, ops, trpoints, getpid()) < 0)
1.9 millert 167: err(1, "%s", tracefile);
1.1 deraadt 168: execvp(argv[0], &argv[0]);
169: err(1, "exec of '%s' failed", argv[0]);
170: }
171: else if (ktrace(tracefile, ops, trpoints, pid) < 0)
1.9 millert 172: err(1, "%s", tracefile);
1.1 deraadt 173: exit(0);
174: }
175:
1.11 espie 176: static int
1.1 deraadt 177: rpid(p)
1.11 espie 178: const char *p;
1.1 deraadt 179: {
180: static int first;
181:
182: if (first++) {
183: warnx("only one -g or -p flag is permitted.");
184: usage();
185: }
186: if (!*p) {
187: warnx("illegal process id.");
188: usage();
189: }
190: return(atoi(p));
191: }
192:
1.11 espie 193: static void
1.1 deraadt 194: usage()
195: {
196: (void)fprintf(stderr,
1.7 deraadt 197: "usage:\tktrace [-aCcid] [-f trfile] [-g pgid] [-p pid] [-t [cenis]\n\tktrace [-aCcid] [-f trfile] [-t [cenis] command\n");
1.1 deraadt 198: exit(1);
199: }
200:
1.11 espie 201: static void
1.1 deraadt 202: no_ktrace(sig)
1.5 deraadt 203: int sig;
1.1 deraadt 204: {
1.12 ! deraadt 205: char buf[8192];
! 206:
! 207: snprintf(buf, sizeof(buf),
1.1 deraadt 208: "error:\tktrace() system call not supported in the running kernel\n\tre-compile kernel with 'options KTRACE'\n");
1.12 ! deraadt 209: write(STDERR_FILENO, buf, strlen(buf));
! 210: _exit(1);
1.1 deraadt 211: }
![[BACK]](/icons/back.gif){kind=icon}
Return to ktrace.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ktrace