Annotation of src/usr.bin/kdump/ktrstruct.c, Revision 1.6
1.6 ! guenther 1: /* $OpenBSD: ktrstruct.c,v 1.5 2014/07/11 21:49:13 tedu Exp $ */
1.1 guenther 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/types.h>
33: #include <sys/resource.h>
34: #include <sys/socket.h>
35: #include <sys/stat.h>
36: #include <sys/time.h>
37: #include <sys/un.h>
1.6 ! guenther 38: #include <ufs/ufs/quota.h>
1.1 guenther 39: #include <netinet/in.h>
40: #include <arpa/inet.h>
41:
42: #include <ctype.h>
43: #include <err.h>
44: #include <limits.h>
45: #include <poll.h>
46: #include <signal.h>
47: #include <stdio.h>
48: #include <stdlib.h>
49: #include <stdint.h>
50: #include <string.h>
51: #include <grp.h>
52: #include <pwd.h>
53: #include <unistd.h>
54:
55: #include "kdump.h"
56: #include "kdump_subr.h"
57:
58: #define TIME_FORMAT "%b %e %T %Y"
59:
60: static void
61: ktrsockaddr(struct sockaddr *sa)
62: {
63: /*
64: TODO: Support additional address families
1.4 guenther 65: #include <netmpls/mpls.h>
66: struct sockaddr_mpls *mpls;
1.1 guenther 67: */
68: char addr[64];
69:
70: /*
71: * note: ktrstruct() has already verified that sa points to a
72: * buffer at least sizeof(struct sockaddr) bytes long and exactly
73: * sa->sa_len bytes long.
74: */
75: printf("struct sockaddr { ");
76: sockfamilyname(sa->sa_family);
77: printf(", ");
78:
79: #define check_sockaddr_len(n) \
80: if (sa_##n->s##n##_len < sizeof(struct sockaddr_##n)) { \
81: printf("invalid"); \
82: break; \
83: }
84:
85: switch(sa->sa_family) {
86: case AF_INET: {
87: struct sockaddr_in *sa_in;
88:
89: sa_in = (struct sockaddr_in *)sa;
90: check_sockaddr_len(in);
91: inet_ntop(AF_INET, &sa_in->sin_addr, addr, sizeof addr);
92: printf("%s:%u", addr, ntohs(sa_in->sin_port));
93: break;
94: }
95: case AF_INET6: {
96: struct sockaddr_in6 *sa_in6;
97:
98: sa_in6 = (struct sockaddr_in6 *)sa;
99: check_sockaddr_len(in6);
100: inet_ntop(AF_INET6, &sa_in6->sin6_addr, addr, sizeof addr);
101: printf("[%s]:%u", addr, htons(sa_in6->sin6_port));
102: break;
103: }
104: #ifdef IPX
105: case AF_IPX: {
106: struct sockaddr_ipx *sa_ipx;
107:
108: sa_ipx = (struct sockaddr_ipx *)sa;
109: check_sockaddr_len(ipx);
110: /* XXX wish we had ipx_ntop */
111: printf("%s", ipx_ntoa(sa_ipx->sipx_addr));
112: break;
113: }
114: #endif
115: case AF_UNIX: {
116: struct sockaddr_un *sa_un;
117:
118: sa_un = (struct sockaddr_un *)sa;
119: if (sa_un->sun_len <= sizeof(sa_un->sun_len) +
120: sizeof(sa_un->sun_family)) {
121: printf("invalid");
122: break;
123: }
124: printf("\"%.*s\"", (int)(sa_un->sun_len -
125: sizeof(sa_un->sun_len) - sizeof(sa_un->sun_family)),
126: sa_un->sun_path);
127: break;
128: }
129: default:
130: printf("unknown address family");
131: }
132: printf(" }\n");
133: }
134:
135: static void
136: print_time(time_t t, int relative)
137: {
138: char timestr[PATH_MAX + 4];
139: struct tm *tm;
140:
141: if (resolv == 0 || relative)
142: printf("%jd", (intmax_t)t);
143: else {
144: tm = localtime(&t);
145: (void)strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
146: printf("\"%s\"", timestr);
147: }
148: }
149:
150: static void
151: print_timespec(const struct timespec *tsp, int relative)
152: {
1.2 guenther 153: if (tsp->tv_nsec == UTIME_NOW)
154: printf("UTIME_NOW");
155: else if (tsp->tv_nsec == UTIME_OMIT)
156: printf("UTIME_OMIT");
1.4 guenther 157: else if ((resolv == 0 || relative) && tsp->tv_sec < 0 &&
158: tsp->tv_nsec > 0) {
159: /* negative relative times with non-zero nsecs require care */
160: printf("-%jd.%09ld", -(intmax_t)(tsp->tv_sec+1),
161: 1000000000 - tsp->tv_nsec);
162: } else {
1.2 guenther 163: print_time(tsp->tv_sec, relative);
164: if (tsp->tv_nsec != 0)
165: printf(".%09ld", tsp->tv_nsec);
166: }
1.1 guenther 167: }
168:
169: static void
170: ktrstat(const struct stat *statp)
171: {
172: char mode[12];
173: struct passwd *pwd;
174: struct group *grp;
175:
176: /*
177: * note: ktrstruct() has already verified that statp points to a
178: * buffer exactly sizeof(struct stat) bytes long.
179: */
180: printf("struct stat { ");
181: strmode(statp->st_mode, mode);
182: printf("dev=%d, ino=%llu, mode=%s, nlink=%u, ",
183: statp->st_dev, (unsigned long long)statp->st_ino,
184: mode, statp->st_nlink);
185: if (resolv == 0 || (pwd = getpwuid(statp->st_uid)) == NULL)
186: printf("uid=%u, ", statp->st_uid);
187: else
188: printf("uid=\"%s\", ", pwd->pw_name);
189: if (resolv == 0 || (grp = getgrgid(statp->st_gid)) == NULL)
190: printf("gid=%u, ", statp->st_gid);
191: else
192: printf("gid=\"%s\", ", grp->gr_name);
193: printf("rdev=%d, ", statp->st_rdev);
194: printf("atime=");
195: print_timespec(&statp->st_atim, 0);
196: printf(", mtime=");
197: print_timespec(&statp->st_mtim, 0);
198: printf(", ctime=");
199: print_timespec(&statp->st_ctim, 0);
200: printf(", size=%lld, blocks=%lld, blksize=%u, flags=0x%x, gen=0x%x",
201: statp->st_size, statp->st_blocks, statp->st_blksize,
202: statp->st_flags, statp->st_gen);
203: printf(" }\n");
204: }
205:
206: static void
207: ktrtimespec(const struct timespec *tsp, int relative)
208: {
209: printf("struct timespec { ");
210: print_timespec(tsp, relative);
211: printf(" }\n");
212: }
213:
214: static void
1.3 guenther 215: print_timeval(const struct timeval *tvp, int relative)
1.1 guenther 216: {
1.4 guenther 217: if ((resolv == 0 || relative) && tvp->tv_sec < 0 &&
218: tvp->tv_usec > 0) {
219: /* negative relative times with non-zero usecs require care */
220: printf("-%jd.%06ld", -(intmax_t)(tvp->tv_sec+1),
221: 1000000 - tvp->tv_usec);
222: } else {
223: print_time(tvp->tv_sec, relative);
224: if (tvp->tv_usec != 0)
225: printf(".%06ld", tvp->tv_usec);
226: }
1.3 guenther 227: }
228:
229: static void
230: ktrtimeval(const struct timeval *tvp, int relative)
231: {
232: printf("struct timeval { ");
233: print_timeval(tvp, relative);
1.1 guenther 234: printf(" }\n");
235: }
236:
237: static void
238: ktrsigaction(const struct sigaction *sa)
239: {
240: /*
241: * note: ktrstruct() has already verified that sa points to a
242: * buffer exactly sizeof(struct sigaction) bytes long.
243: */
244: printf("struct sigaction { ");
245: if (sa->sa_handler == SIG_DFL)
246: printf("handler=SIG_DFL");
247: else if (sa->sa_handler == SIG_IGN)
248: printf("handler=SIG_IGN");
249: else if (sa->sa_flags & SA_SIGINFO)
250: printf("sigaction=%p", (void *)sa->sa_sigaction);
251: else
252: printf("handler=%p", (void *)sa->sa_handler);
253: printf(", mask=");
254: sigset(sa->sa_mask);
255: printf(", flags=");
256: sigactionflagname(sa->sa_flags);
257: printf(" }\n");
258: }
259:
260: static void
261: print_rlim(rlim_t lim)
262: {
263: if (lim == RLIM_INFINITY)
264: printf("infinite");
265: else
266: printf("%llu", (unsigned long long)lim);
267: }
268:
269: static void
270: ktrrlimit(const struct rlimit *limp)
271: {
272: printf("struct rlimit { ");
273: printf("cur=");
274: print_rlim(limp->rlim_cur);
275: printf(", max=");
276: print_rlim(limp->rlim_max);
277: printf(" }\n");
278: }
279:
280: static void
281: ktrtfork(const struct __tfork *tf)
282: {
283: printf("struct __tfork { tcb=%p, tid=%p, stack=%p }\n",
284: tf->tf_tcb, (void *)tf->tf_tid, tf->tf_stack);
285: }
286:
287: static void
288: ktrfdset(const struct fd_set *fds, int len)
289: {
290: int nfds, i, start = -1;
291: char sep = ' ';
292:
293: nfds = len * NBBY;
294: printf("struct fd_set {");
295: for (i = 0; i <= nfds; i++)
296: if (i != nfds && FD_ISSET(i, fds)) {
297: if (start == -1)
298: start = i;
299: } else if (start != -1) {
300: putchar(sep);
301: if (start == i - 1)
302: printf("%d", start);
303: else if (start == i - 2)
304: printf("%d,%d", start, i - 1);
305: else
306: printf("%d-%d", start, i - 1);
307: sep = ',';
308: start = -1;
309: }
310:
311: printf(" }\n");
312: }
313:
1.3 guenther 314: static void
315: ktrrusage(const struct rusage *rup)
316: {
317: printf("struct rusage { utime=");
318: print_timeval(&rup->ru_utime, 1);
319: printf(", stime=");
320: print_timeval(&rup->ru_stime, 1);
321: printf(", maxrss=%ld, ixrss=%ld, idrss=%ld, isrss=%ld,"
322: " minflt=%ld, majflt=%ld, nswap=%ld, inblock=%ld,"
323: " oublock=%ld, msgsnd=%ld, msgrcv=%ld, nsignals=%ld,"
324: " nvcsw=%ld, nivcsw=%ld }\n",
325: rup->ru_maxrss, rup->ru_ixrss, rup->ru_idrss, rup->ru_isrss,
326: rup->ru_minflt, rup->ru_majflt, rup->ru_nswap, rup->ru_inblock,
327: rup->ru_oublock, rup->ru_msgsnd, rup->ru_msgrcv, rup->ru_nsignals,
328: rup->ru_nvcsw, rup->ru_nivcsw);
329: }
330:
1.6 ! guenther 331: static void
! 332: ktrquota(const struct dqblk *quota)
! 333: {
! 334: printf("struct dqblk { bhardlimit=%u, bsoftlimit=%u, curblocks=%u,"
! 335: " ihardlimit=%u, isoftlimit=%u, curinodes=%u, btime=",
! 336: quota->dqb_bhardlimit, quota->dqb_bsoftlimit,
! 337: quota->dqb_curblocks, quota->dqb_ihardlimit,
! 338: quota->dqb_isoftlimit, quota->dqb_curinodes);
! 339: print_time(quota->dqb_btime, 0);
! 340: printf(", itime=");
! 341: print_time(quota->dqb_itime, 0);
! 342: printf(" }\n");
! 343: }
! 344:
1.1 guenther 345: void
346: ktrstruct(char *buf, size_t buflen)
347: {
348: char *name, *data;
349: size_t namelen, datalen;
350: int i;
351:
352: for (name = buf, namelen = 0; namelen < buflen && name[namelen] != '\0';
353: ++namelen)
354: /* nothing */;
355: if (namelen == buflen)
356: goto invalid;
357: if (name[namelen] != '\0')
358: goto invalid;
359: data = buf + namelen + 1;
360: datalen = buflen - namelen - 1;
361: if (datalen == 0)
362: goto invalid;
363: /* sanity check */
364: for (i = 0; i < namelen; ++i)
365: if (!isalpha((unsigned char)name[i]))
366: goto invalid;
367: if (strcmp(name, "stat") == 0) {
368: struct stat sb;
369:
370: if (datalen != sizeof(struct stat))
371: goto invalid;
372: memcpy(&sb, data, datalen);
373: ktrstat(&sb);
374: } else if (strcmp(name, "sockaddr") == 0) {
375: struct sockaddr_storage ss;
376:
377: if (datalen > sizeof(ss))
378: goto invalid;
379: memcpy(&ss, data, datalen);
380: if ((ss.ss_family != AF_UNIX &&
381: datalen < sizeof(struct sockaddr)) || datalen != ss.ss_len)
382: goto invalid;
383: ktrsockaddr((struct sockaddr *)&ss);
384: } else if (strcmp(name, "abstimespec") == 0 ||
385: strcmp(name, "reltimespec") == 0) {
386: struct timespec ts;
387:
388: if (datalen != sizeof(ts))
389: goto invalid;
390: memcpy(&ts, data, datalen);
391: ktrtimespec(&ts, name[0] == 'r');
392: } else if (strcmp(name, "abstimeval") == 0 ||
393: strcmp(name, "reltimeval") == 0) {
394: struct timeval tv;
395:
396: if (datalen != sizeof(tv))
397: goto invalid;
398: memcpy(&tv, data, datalen);
399: ktrtimeval(&tv, name[0] == 'r');
400: } else if (strcmp(name, "sigaction") == 0) {
401: struct sigaction sa;
402:
403: if (datalen != sizeof(sa))
404: goto invalid;
405: memcpy(&sa, data, datalen);
406: ktrsigaction(&sa);
407: } else if (strcmp(name, "rlimit") == 0) {
408: struct rlimit lim;
409:
410: if (datalen != sizeof(lim))
411: goto invalid;
412: memcpy(&lim, data, datalen);
413: ktrrlimit(&lim);
1.3 guenther 414: } else if (strcmp(name, "rusage") == 0) {
415: struct rusage ru;
416:
417: if (datalen != sizeof(ru))
418: goto invalid;
419: memcpy(&ru, data, datalen);
420: ktrrusage(&ru);
1.1 guenther 421: } else if (strcmp(name, "tfork") == 0) {
422: struct __tfork tf;
423:
424: if (datalen != sizeof(tf))
425: goto invalid;
426: memcpy(&tf, data, datalen);
427: ktrtfork(&tf);
428: } else if (strcmp(name, "fdset") == 0) {
429: struct fd_set *fds;
430: if ((fds = malloc(datalen)) == NULL)
431: err(1, "malloc");
432: memcpy(fds, data, datalen);
433: ktrfdset(fds, datalen);
434: free(fds);
1.6 ! guenther 435: } else if (strcmp(name, "quota") == 0) {
! 436: struct dqblk quota;
! 437:
! 438: if (datalen != sizeof(quota))
! 439: goto invalid;
! 440: memcpy("a, data, datalen);
! 441: ktrquota("a);
1.1 guenther 442: } else {
443: printf("unknown structure %s\n", name);
444: }
445: return;
446: invalid:
447: printf("invalid record\n");
448: }
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