/* $OpenBSD: kdump.c,v 1.4 1996/06/26 05:34:43 deraadt Exp $ */ /*- * Copyright (c) 1988, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static char copyright[] = "@(#) Copyright (c) 1988, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)kdump.c 8.4 (Berkeley) 4/28/95"; #endif static char *rcsid = "$OpenBSD: kdump.c,v 1.4 1996/06/26 05:34:43 deraadt Exp $"; #endif /* not lint */ #include <sys/param.h> #include <sys/errno.h> #include <sys/time.h> #include <sys/uio.h> #include <sys/ktrace.h> #include <sys/ioctl.h> #include <sys/ptrace.h> #define _KERNEL #include <sys/errno.h> #undef _KERNEL #include <err.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <vis.h> #include "ktrace.h" int timestamp, decimal, fancy = 1, tail, maxdata; char *tracefile = DEF_TRACEFILE; struct ktr_header ktr_header; #define eqs(s1, s2) (strcmp((s1), (s2)) == 0) #include <sys/syscall.h> #include "../../sys/compat/hpux/hpux_syscall.h" #include "../../sys/compat/ibcs2/ibcs2_syscall.h" #include "../../sys/compat/linux/linux_syscall.h" #include "../../sys/compat/osf1/osf1_syscall.h" #include "../../sys/compat/sunos/sunos_syscall.h" #include "../../sys/compat/svr4/svr4_syscall.h" #include "../../sys/compat/ultrix/ultrix_syscall.h" #define KTRACE #include "../../sys/kern/syscalls.c" #include "../../sys/compat/hpux/hpux_syscalls.c" #include "../../sys/compat/ibcs2/ibcs2_syscalls.c" #include "../../sys/compat/linux/linux_syscalls.c" #include "../../sys/compat/osf1/osf1_syscalls.c" #include "../../sys/compat/sunos/sunos_syscalls.c" #include "../../sys/compat/svr4/svr4_syscalls.c" #include "../../sys/compat/ultrix/ultrix_syscalls.c" #undef KTRACE struct emulation { char *name; /* Emulation name */ char **sysnames; /* Array of system call names */ int nsysnames; /* Number of */ }; static struct emulation emulations[] = { { "native", syscallnames, SYS_MAXSYSCALL }, { "hpux", hpux_syscallnames, HPUX_SYS_MAXSYSCALL }, { "ibcs2", ibcs2_syscallnames, IBCS2_SYS_MAXSYSCALL }, { "linux", linux_syscallnames, LINUX_SYS_MAXSYSCALL }, { "osf1", osf1_syscallnames, OSF1_SYS_MAXSYSCALL }, { "sunos", sunos_syscallnames, SUNOS_SYS_MAXSYSCALL }, { "svr4", svr4_syscallnames, SVR4_SYS_MAXSYSCALL }, { "ultrix", ultrix_syscallnames, ULTRIX_SYS_MAXSYSCALL }, { NULL, NULL, NULL } }; struct emulation *current; static char *ptrace_ops[] = { "PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U", "PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE", "PT_KILL", "PT_ATTACH", "PT_DETACH", }; int main(argc, argv) int argc; char *argv[]; { int ch, ktrlen, size; register void *m; int trpoints = ALL_POINTS; current = &emulations[0]; /* native */ while ((ch = getopt(argc, argv, "e:f:dlm:nRTt:")) != -1) switch (ch) { case 'e': setemul(optarg); break; case 'f': tracefile = optarg; break; case 'd': decimal = 1; break; case 'l': tail = 1; break; case 'm': maxdata = atoi(optarg); break; case 'n': fancy = 0; break; case 'R': timestamp = 2; /* relative timestamp */ break; case 'T': timestamp = 1; break; case 't': trpoints = getpoints(optarg); if (trpoints < 0) errx(1, "unknown trace point in %s", optarg); break; default: usage(); } argv += optind; argc -= optind; if (argc > 1) usage(); m = (void *)malloc(size = 1025); if (m == NULL) errx(1, "%s", strerror(ENOMEM)); if (!freopen(tracefile, "r", stdin)) err(1, "%s", tracefile); while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) { if (trpoints & (1<<ktr_header.ktr_type)) dumpheader(&ktr_header); if ((ktrlen = ktr_header.ktr_len) < 0) errx(1, "bogus length 0x%x", ktrlen); if (ktrlen > size) { m = (void *)realloc(m, ktrlen+1); if (m == NULL) errx(1, "%s", strerror(ENOMEM)); size = ktrlen; } if (ktrlen && fread_tail(m, ktrlen, 1) == 0) errx(1, "data too short"); if ((trpoints & (1<<ktr_header.ktr_type)) == 0) continue; switch (ktr_header.ktr_type) { case KTR_SYSCALL: ktrsyscall((struct ktr_syscall *)m); break; case KTR_SYSRET: ktrsysret((struct ktr_sysret *)m); break; case KTR_NAMEI: ktrnamei(m, ktrlen); break; case KTR_GENIO: ktrgenio((struct ktr_genio *)m, ktrlen); break; case KTR_PSIG: ktrpsig((struct ktr_psig *)m); break; case KTR_CSW: ktrcsw((struct ktr_csw *)m); break; case KTR_EMUL: ktremul(m, ktrlen); break; } if (tail) (void)fflush(stdout); } } fread_tail(buf, size, num) char *buf; int num, size; { int i; while ((i = fread(buf, size, num, stdin)) == 0 && tail) { (void)sleep(1); clearerr(stdin); } return (i); } dumpheader(kth) struct ktr_header *kth; { char unknown[64], *type; static struct timeval prevtime; struct timeval temp; switch (kth->ktr_type) { case KTR_SYSCALL: type = "CALL"; break; case KTR_SYSRET: type = "RET "; break; case KTR_NAMEI: type = "NAMI"; break; case KTR_GENIO: type = "GIO "; break; case KTR_PSIG: type = "PSIG"; break; case KTR_CSW: type = "CSW"; break; case KTR_EMUL: type = "EMUL"; break; default: (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type); type = unknown; } (void)printf("%6d %-8.*s ", kth->ktr_pid, MAXCOMLEN, kth->ktr_comm); if (timestamp) { if (timestamp == 2) { timersub(&kth->ktr_time, &prevtime, &temp); prevtime = kth->ktr_time; } else temp = kth->ktr_time; (void)printf("%ld.%06ld ", temp.tv_sec, temp.tv_usec); } (void)printf("%s ", type); } void ioctldecode(cmd) u_long cmd; { char dirbuf[4], *dir = dirbuf; if (cmd & IOC_OUT) *dir++ = 'W'; if (cmd & IOC_IN) *dir++ = 'R'; *dir = '\0'; printf(decimal ? ",_IO%s('%c',%ld" : ",_IO%s('%c',%#lx", dirbuf, (cmd >> 8) & 0xff, cmd & 0xff); if ((cmd & IOC_VOID) == 0) printf(decimal ? ",%ld)" : ",%#lx)", (cmd >> 16) & 0xff); else printf(")"); } ktrsyscall(ktr) register struct ktr_syscall *ktr; { register argsize = ktr->ktr_argsize; register register_t *ap; char *ioctlname(); if (ktr->ktr_code >= current->nsysnames || ktr->ktr_code < 0) (void)printf("[%d]", ktr->ktr_code); else (void)printf("%s", current->sysnames[ktr->ktr_code]); ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall)); if (argsize) { char c = '('; if (fancy) { if (ktr->ktr_code == SYS_ioctl) { char *cp; if (decimal) (void)printf("(%ld", (long)*ap); else (void)printf("(%#lx", (long)*ap); ap++; argsize -= sizeof(register_t); if ((cp = ioctlname(*ap)) != NULL) (void)printf(",%s", cp); else ioctldecode(*ap); c = ','; ap++; argsize -= sizeof(register_t); } else if (ktr->ktr_code == SYS_ptrace) { if (*ap >= 0 && *ap <= sizeof(ptrace_ops) / sizeof(ptrace_ops[0])) (void)printf("(%s", ptrace_ops[*ap]); else (void)printf("(%ld", (long)*ap); c = ','; ap++; argsize -= sizeof(register_t); } } while (argsize) { if (decimal) (void)printf("%c%ld", c, (long)*ap); else (void)printf("%c%#lx", c, (long)*ap); c = ','; ap++; argsize -= sizeof(register_t); } (void)putchar(')'); } (void)putchar('\n'); } ktrsysret(ktr) struct ktr_sysret *ktr; { register int ret = ktr->ktr_retval; register int error = ktr->ktr_error; register int code = ktr->ktr_code; if (code >= current->nsysnames || code < 0) (void)printf("[%d] ", code); else (void)printf("%s ", current->sysnames[code]); if (error == 0) { if (fancy) { (void)printf("%d", ret); if (ret < 0 || ret > 9) (void)printf("/%#x", ret); } else { if (decimal) (void)printf("%d", ret); else (void)printf("%#x", ret); } } else if (error == ERESTART) (void)printf("RESTART"); else if (error == EJUSTRETURN) (void)printf("JUSTRETURN"); else { (void)printf("-1 errno %d", ktr->ktr_error); if (fancy) (void)printf(" %s", strerror(ktr->ktr_error)); } (void)putchar('\n'); } ktrnamei(cp, len) char *cp; { (void)printf("\"%.*s\"\n", len, cp); } ktremul(cp, len) char *cp; { char name[1024]; if (len >= sizeof(name)) errx(1, "Emulation name too long"); strncpy(name, cp, len); name[len] = '\0'; (void)printf("\"%s\"\n", name); setemul(name); } ktrgenio(ktr, len) struct ktr_genio *ktr; { register int datalen = len - sizeof (struct ktr_genio); register char *dp = (char *)ktr + sizeof (struct ktr_genio); register char *cp; register int col = 0; register width; char visbuf[5]; static screenwidth = 0; if (screenwidth == 0) { struct winsize ws; if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 && ws.ws_col > 8) screenwidth = ws.ws_col; else screenwidth = 80; } printf("fd %d %s %d bytes\n", ktr->ktr_fd, ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen); if (maxdata && datalen > maxdata) datalen = maxdata; (void)printf(" \""); col = 8; for (; datalen > 0; datalen--, dp++) { (void) vis(visbuf, *dp, VIS_CSTYLE, *(dp+1)); cp = visbuf; /* * Keep track of printables and * space chars (like fold(1)). */ if (col == 0) { (void)putchar('\t'); col = 8; } switch(*cp) { case '\n': col = 0; (void)putchar('\n'); continue; case '\t': width = 8 - (col&07); break; default: width = strlen(cp); } if (col + width > (screenwidth-2)) { (void)printf("\\\n\t"); col = 8; } col += width; do { (void)putchar(*cp++); } while (*cp); } if (col == 0) (void)printf(" "); (void)printf("\"\n"); } ktrpsig(psig) struct ktr_psig *psig; { (void)printf("SIG%s ", sys_signame[psig->signo]); if (psig->action == SIG_DFL) (void)printf("SIG_DFL\n"); else (void)printf("caught handler=0x%lx mask=0x%x code=0x%x\n", (u_long)psig->action, psig->mask, psig->code); } ktrcsw(cs) struct ktr_csw *cs; { (void)printf("%s %s\n", cs->out ? "stop" : "resume", cs->user ? "user" : "kernel"); } usage() { (void)fprintf(stderr, "usage: kdump [-dnlRT] [-e emulation] [-f trfile] [-m maxdata] [-t [cnis]]\n"); exit(1); } setemul(name) char *name; { int i; for (i = 0; emulations[i].name != NULL; i++) if (strcmp(emulations[i].name, name) == 0) { current = &emulations[i]; return; } warnx("Emulation `%s' unknown", name); }