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1.9 ! deraadt 1: /* $OpenBSD: kdump.c,v 1.8 1997/02/28 07:09:08 millert Exp $ */
1.4 deraadt 2:
1.1 deraadt 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. 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: static char copyright[] =
38: "@(#) Copyright (c) 1988, 1993\n\
39: The Regents of the University of California. All rights reserved.\n";
40: #endif /* not lint */
41:
42: #ifndef lint
43: #if 0
44: static char sccsid[] = "@(#)kdump.c 8.4 (Berkeley) 4/28/95";
45: #endif
1.9 ! deraadt 46: static char *rcsid = "$OpenBSD: kdump.c,v 1.8 1997/02/28 07:09:08 millert Exp $";
1.1 deraadt 47: #endif /* not lint */
48:
49: #include <sys/param.h>
50: #include <sys/time.h>
51: #include <sys/uio.h>
52: #include <sys/ktrace.h>
53: #include <sys/ioctl.h>
54: #include <sys/ptrace.h>
55: #define _KERNEL
56: #include <sys/errno.h>
57: #undef _KERNEL
58:
59: #include <err.h>
60: #include <signal.h>
61: #include <stdio.h>
62: #include <stdlib.h>
63: #include <string.h>
64: #include <unistd.h>
65: #include <vis.h>
66:
67: #include "ktrace.h"
68:
69: int timestamp, decimal, fancy = 1, tail, maxdata;
70: char *tracefile = DEF_TRACEFILE;
71: struct ktr_header ktr_header;
72:
73: #define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
74:
75: #include <sys/syscall.h>
76:
1.9 ! deraadt 77: #include "../../sys/compat/bsdos/bsdos_syscall.h"
! 78: #include "../../sys/compat/freebsd/freebsd_syscall.h"
1.1 deraadt 79: #include "../../sys/compat/hpux/hpux_syscall.h"
80: #include "../../sys/compat/ibcs2/ibcs2_syscall.h"
81: #include "../../sys/compat/linux/linux_syscall.h"
82: #include "../../sys/compat/osf1/osf1_syscall.h"
83: #include "../../sys/compat/sunos/sunos_syscall.h"
84: #include "../../sys/compat/svr4/svr4_syscall.h"
85: #include "../../sys/compat/ultrix/ultrix_syscall.h"
86:
87: #define KTRACE
1.7 deraadt 88: #define NFSCLIENT
89: #define NFSSERVER
90: #define SYSVSEM
91: #define SYSVMSG
92: #define SYSVSHM
93: #define LFS
94: #define NTP
1.1 deraadt 95: #include "../../sys/kern/syscalls.c"
96:
1.9 ! deraadt 97: #include "../../sys/compat/bsdos/bsdos_syscalls.c"
! 98: #include "../../sys/compat/freebsd/freebsd_syscalls.c"
1.1 deraadt 99: #include "../../sys/compat/hpux/hpux_syscalls.c"
100: #include "../../sys/compat/ibcs2/ibcs2_syscalls.c"
101: #include "../../sys/compat/linux/linux_syscalls.c"
102: #include "../../sys/compat/osf1/osf1_syscalls.c"
103: #include "../../sys/compat/sunos/sunos_syscalls.c"
104: #include "../../sys/compat/svr4/svr4_syscalls.c"
105: #include "../../sys/compat/ultrix/ultrix_syscalls.c"
106: #undef KTRACE
1.7 deraadt 107: #undef NFSCLIENT
108: #undef NFSSERVER
109: #undef SYSVSEM
110: #undef SYSVMSG
111: #undef SYSVSHM
112: #undef LFS
113: #undef NTP
1.1 deraadt 114:
115: struct emulation {
116: char *name; /* Emulation name */
117: char **sysnames; /* Array of system call names */
118: int nsysnames; /* Number of */
119: };
120:
121: static struct emulation emulations[] = {
1.9 ! deraadt 122: { "native", syscallnames, SYS_MAXSYSCALL },
! 123: { "hpux", hpux_syscallnames, HPUX_SYS_MAXSYSCALL },
! 124: { "ibcs2", ibcs2_syscallnames, IBCS2_SYS_MAXSYSCALL },
! 125: { "linux", linux_syscallnames, LINUX_SYS_MAXSYSCALL },
! 126: { "osf1", osf1_syscallnames, OSF1_SYS_MAXSYSCALL },
! 127: { "sunos", sunos_syscallnames, SUNOS_SYS_MAXSYSCALL },
! 128: { "svr4", svr4_syscallnames, SVR4_SYS_MAXSYSCALL },
! 129: { "ultrix", ultrix_syscallnames, ULTRIX_SYS_MAXSYSCALL },
! 130: { "bsdos", bsdos_syscallnames, BSDOS_SYS_MAXSYSCALL },
! 131: { "freebsd", freebsd_syscallnames, FREEBSD_SYS_MAXSYSCALL },
! 132: { NULL, NULL, NULL }
1.1 deraadt 133: };
134:
135: struct emulation *current;
136:
137:
138: static char *ptrace_ops[] = {
139: "PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U",
140: "PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE",
141: "PT_KILL", "PT_ATTACH", "PT_DETACH",
142: };
143:
144: int
145: main(argc, argv)
146: int argc;
147: char *argv[];
148: {
149: int ch, ktrlen, size;
150: register void *m;
151: int trpoints = ALL_POINTS;
152:
1.3 deraadt 153: current = &emulations[0]; /* native */
1.1 deraadt 154:
155: while ((ch = getopt(argc, argv, "e:f:dlm:nRTt:")) != -1)
156: switch (ch) {
157: case 'e':
158: setemul(optarg);
159: break;
160: case 'f':
161: tracefile = optarg;
162: break;
163: case 'd':
164: decimal = 1;
165: break;
166: case 'l':
167: tail = 1;
168: break;
169: case 'm':
170: maxdata = atoi(optarg);
171: break;
172: case 'n':
173: fancy = 0;
174: break;
175: case 'R':
176: timestamp = 2; /* relative timestamp */
177: break;
178: case 'T':
179: timestamp = 1;
180: break;
181: case 't':
182: trpoints = getpoints(optarg);
183: if (trpoints < 0)
184: errx(1, "unknown trace point in %s", optarg);
185: break;
186: default:
187: usage();
188: }
1.5 deraadt 189: if (argc > optind)
1.1 deraadt 190: usage();
191:
192: m = (void *)malloc(size = 1025);
193: if (m == NULL)
194: errx(1, "%s", strerror(ENOMEM));
195: if (!freopen(tracefile, "r", stdin))
196: err(1, "%s", tracefile);
197: while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
198: if (trpoints & (1<<ktr_header.ktr_type))
199: dumpheader(&ktr_header);
200: if ((ktrlen = ktr_header.ktr_len) < 0)
201: errx(1, "bogus length 0x%x", ktrlen);
202: if (ktrlen > size) {
203: m = (void *)realloc(m, ktrlen+1);
204: if (m == NULL)
205: errx(1, "%s", strerror(ENOMEM));
206: size = ktrlen;
207: }
208: if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
209: errx(1, "data too short");
210: if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
211: continue;
212: switch (ktr_header.ktr_type) {
213: case KTR_SYSCALL:
214: ktrsyscall((struct ktr_syscall *)m);
215: break;
216: case KTR_SYSRET:
217: ktrsysret((struct ktr_sysret *)m);
218: break;
219: case KTR_NAMEI:
220: ktrnamei(m, ktrlen);
221: break;
222: case KTR_GENIO:
223: ktrgenio((struct ktr_genio *)m, ktrlen);
224: break;
225: case KTR_PSIG:
226: ktrpsig((struct ktr_psig *)m);
227: break;
228: case KTR_CSW:
229: ktrcsw((struct ktr_csw *)m);
230: break;
231: case KTR_EMUL:
232: ktremul(m, ktrlen);
233: break;
234: }
235: if (tail)
236: (void)fflush(stdout);
237: }
238: }
239:
240: fread_tail(buf, size, num)
241: char *buf;
242: int num, size;
243: {
244: int i;
245:
246: while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
247: (void)sleep(1);
248: clearerr(stdin);
249: }
250: return (i);
251: }
252:
253: dumpheader(kth)
254: struct ktr_header *kth;
255: {
256: char unknown[64], *type;
257: static struct timeval prevtime;
258: struct timeval temp;
259:
260: switch (kth->ktr_type) {
261: case KTR_SYSCALL:
262: type = "CALL";
263: break;
264: case KTR_SYSRET:
265: type = "RET ";
266: break;
267: case KTR_NAMEI:
268: type = "NAMI";
269: break;
270: case KTR_GENIO:
271: type = "GIO ";
272: break;
273: case KTR_PSIG:
274: type = "PSIG";
275: break;
276: case KTR_CSW:
277: type = "CSW";
278: break;
279: case KTR_EMUL:
280: type = "EMUL";
281: break;
282: default:
283: (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
284: type = unknown;
285: }
286:
287: (void)printf("%6d %-8.*s ", kth->ktr_pid, MAXCOMLEN, kth->ktr_comm);
288: if (timestamp) {
289: if (timestamp == 2) {
290: timersub(&kth->ktr_time, &prevtime, &temp);
291: prevtime = kth->ktr_time;
292: } else
293: temp = kth->ktr_time;
294: (void)printf("%ld.%06ld ", temp.tv_sec, temp.tv_usec);
295: }
296: (void)printf("%s ", type);
297: }
298:
1.2 deraadt 299: void
300: ioctldecode(cmd)
301: u_long cmd;
302: {
303: char dirbuf[4], *dir = dirbuf;
304:
1.6 deraadt 305: if (cmd & IOC_IN)
306: *dir++ = 'W';
1.2 deraadt 307: if (cmd & IOC_OUT)
308: *dir++ = 'R';
309: *dir = '\0';
310:
311: printf(decimal ? ",_IO%s('%c',%ld" : ",_IO%s('%c',%#lx",
312: dirbuf, (cmd >> 8) & 0xff, cmd & 0xff);
313: if ((cmd & IOC_VOID) == 0)
314: printf(decimal ? ",%ld)" : ",%#lx)", (cmd >> 16) & 0xff);
315: else
316: printf(")");
317: }
1.1 deraadt 318:
319: ktrsyscall(ktr)
320: register struct ktr_syscall *ktr;
321: {
322: register argsize = ktr->ktr_argsize;
323: register register_t *ap;
324: char *ioctlname();
325:
326: if (ktr->ktr_code >= current->nsysnames || ktr->ktr_code < 0)
327: (void)printf("[%d]", ktr->ktr_code);
328: else
329: (void)printf("%s", current->sysnames[ktr->ktr_code]);
330: ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall));
331: if (argsize) {
332: char c = '(';
333: if (fancy) {
334: if (ktr->ktr_code == SYS_ioctl) {
335: char *cp;
336: if (decimal)
337: (void)printf("(%ld", (long)*ap);
338: else
339: (void)printf("(%#lx", (long)*ap);
340: ap++;
341: argsize -= sizeof(register_t);
342: if ((cp = ioctlname(*ap)) != NULL)
343: (void)printf(",%s", cp);
1.2 deraadt 344: else
345: ioctldecode(*ap);
1.1 deraadt 346: c = ',';
347: ap++;
348: argsize -= sizeof(register_t);
349: } else if (ktr->ktr_code == SYS_ptrace) {
350: if (*ap >= 0 && *ap <=
351: sizeof(ptrace_ops) / sizeof(ptrace_ops[0]))
352: (void)printf("(%s", ptrace_ops[*ap]);
353: else
354: (void)printf("(%ld", (long)*ap);
355: c = ',';
356: ap++;
357: argsize -= sizeof(register_t);
358: }
359: }
360: while (argsize) {
361: if (decimal)
362: (void)printf("%c%ld", c, (long)*ap);
363: else
364: (void)printf("%c%#lx", c, (long)*ap);
365: c = ',';
366: ap++;
367: argsize -= sizeof(register_t);
368: }
369: (void)putchar(')');
370: }
371: (void)putchar('\n');
372: }
373:
374: ktrsysret(ktr)
375: struct ktr_sysret *ktr;
376: {
377: register int ret = ktr->ktr_retval;
378: register int error = ktr->ktr_error;
379: register int code = ktr->ktr_code;
380:
381: if (code >= current->nsysnames || code < 0)
382: (void)printf("[%d] ", code);
383: else
384: (void)printf("%s ", current->sysnames[code]);
385:
386: if (error == 0) {
387: if (fancy) {
388: (void)printf("%d", ret);
389: if (ret < 0 || ret > 9)
390: (void)printf("/%#x", ret);
391: } else {
392: if (decimal)
393: (void)printf("%d", ret);
394: else
395: (void)printf("%#x", ret);
396: }
397: } else if (error == ERESTART)
398: (void)printf("RESTART");
399: else if (error == EJUSTRETURN)
400: (void)printf("JUSTRETURN");
401: else {
402: (void)printf("-1 errno %d", ktr->ktr_error);
403: if (fancy)
404: (void)printf(" %s", strerror(ktr->ktr_error));
405: }
406: (void)putchar('\n');
407: }
408:
409: ktrnamei(cp, len)
410: char *cp;
411: {
412: (void)printf("\"%.*s\"\n", len, cp);
413: }
414:
415: ktremul(cp, len)
416: char *cp;
417: {
418: char name[1024];
419:
420: if (len >= sizeof(name))
421: errx(1, "Emulation name too long");
422:
423: strncpy(name, cp, len);
424: name[len] = '\0';
425: (void)printf("\"%s\"\n", name);
426:
427: setemul(name);
428: }
429:
430: ktrgenio(ktr, len)
431: struct ktr_genio *ktr;
432: {
433: register int datalen = len - sizeof (struct ktr_genio);
434: register char *dp = (char *)ktr + sizeof (struct ktr_genio);
435: register char *cp;
436: register int col = 0;
437: register width;
438: char visbuf[5];
439: static screenwidth = 0;
440:
441: if (screenwidth == 0) {
442: struct winsize ws;
443:
444: if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
445: ws.ws_col > 8)
446: screenwidth = ws.ws_col;
447: else
448: screenwidth = 80;
449: }
450: printf("fd %d %s %d bytes\n", ktr->ktr_fd,
451: ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen);
452: if (maxdata && datalen > maxdata)
453: datalen = maxdata;
454: (void)printf(" \"");
455: col = 8;
456: for (; datalen > 0; datalen--, dp++) {
457: (void) vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
458: cp = visbuf;
459: /*
460: * Keep track of printables and
461: * space chars (like fold(1)).
462: */
463: if (col == 0) {
464: (void)putchar('\t');
465: col = 8;
466: }
467: switch(*cp) {
468: case '\n':
469: col = 0;
470: (void)putchar('\n');
471: continue;
472: case '\t':
473: width = 8 - (col&07);
474: break;
475: default:
476: width = strlen(cp);
477: }
478: if (col + width > (screenwidth-2)) {
479: (void)printf("\\\n\t");
480: col = 8;
481: }
482: col += width;
483: do {
484: (void)putchar(*cp++);
485: } while (*cp);
486: }
487: if (col == 0)
488: (void)printf(" ");
489: (void)printf("\"\n");
490: }
491:
492: ktrpsig(psig)
493: struct ktr_psig *psig;
494: {
495: (void)printf("SIG%s ", sys_signame[psig->signo]);
496: if (psig->action == SIG_DFL)
497: (void)printf("SIG_DFL\n");
498: else
499: (void)printf("caught handler=0x%lx mask=0x%x code=0x%x\n",
500: (u_long)psig->action, psig->mask, psig->code);
501: }
502:
503: ktrcsw(cs)
504: struct ktr_csw *cs;
505: {
506: (void)printf("%s %s\n", cs->out ? "stop" : "resume",
507: cs->user ? "user" : "kernel");
508: }
509:
510: usage()
511: {
512:
513: (void)fprintf(stderr,
514: "usage: kdump [-dnlRT] [-e emulation] [-f trfile] [-m maxdata] [-t [cnis]]\n");
515: exit(1);
516: }
517:
518: setemul(name)
519: char *name;
520: {
521: int i;
522: for (i = 0; emulations[i].name != NULL; i++)
523: if (strcmp(emulations[i].name, name) == 0) {
524: current = &emulations[i];
525: return;
526: }
527: warnx("Emulation `%s' unknown", name);
528: }