/* $OpenBSD: kdump.c,v 1.20 2003/02/19 19:30:13 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 1.20 2003/02/19 19:30:13 deraadt Exp $"; #endif /* not lint */ #include #include #include #include #include #include #define _KERNEL #include #undef _KERNEL #include #include #include #include #include #include #include #include "ktrace.h" #include "extern.h" int timestamp, decimal, fancy = 1, tail, maxdata; char *tracefile = DEF_TRACEFILE; struct ktr_header ktr_header; pid_t pid = -1; #define eqs(s1, s2) (strcmp((s1), (s2)) == 0) #include #include "../../sys/compat/bsdos/bsdos_syscall.h" #include "../../sys/compat/freebsd/freebsd_syscall.h" #include "../../sys/compat/netbsd/netbsd_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 #define PTRACE #define NFSCLIENT #define NFSSERVER #define SYSVSEM #define SYSVMSG #define SYSVSHM #define LFS #define UFS_EXTATTR #include "../../sys/kern/syscalls.c" #include "../../sys/compat/bsdos/bsdos_syscalls.c" #include "../../sys/compat/freebsd/freebsd_syscalls.c" #include "../../sys/compat/netbsd/netbsd_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 #undef PTRACE #undef NFSCLIENT #undef NFSSERVER #undef SYSVSEM #undef SYSVMSG #undef SYSVSHM #undef LFS #undef UFS_EXTATTR 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 }, { "bsdos", bsdos_syscallnames, BSDOS_SYS_MAXSYSCALL }, { "freebsd", freebsd_syscallnames, FREEBSD_SYS_MAXSYSCALL }, { "netbsd", netbsd_syscallnames, NETBSD_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", "PT_IO", }; static int fread_tail(void *, int, int); static void dumpheader(struct ktr_header *); static void ktrcsw(struct ktr_csw *); static void ktremul(char *, int); static void ktrgenio(struct ktr_genio *, int); static void ktrnamei(const char *, int); static void ktrpsig(struct ktr_psig *); static void ktrsyscall(struct ktr_syscall *); static void ktrsysret(struct ktr_sysret *); static void setemul(const char *); static void usage(void); int main(int argc, char *argv[]) { int ch, ktrlen, size, silent; int trpoints = ALL_POINTS; void *m; current = &emulations[0]; /* native */ while ((ch = getopt(argc, argv, "e:f:dlm:nRp:Tt:")) != -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 'p': pid = atoi(optarg); 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(); } if (argc > optind) 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)) { silent = 0; if (pid != -1 && pid != ktr_header.ktr_pid) silent = 1; if (silent == 0 && trpoints & (1< 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 (silent) continue; if ((trpoints & (1<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)snprintf(unknown, sizeof unknown, "UNKNOWN(%d)", kth->ktr_type); type = unknown; } (void)printf("%6ld %-8.*s ", (long)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); } static void ioctldecode(u_long cmd) { char dirbuf[4], *dir = dirbuf; if (cmd & IOC_IN) *dir++ = 'W'; if (cmd & IOC_OUT) *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(")"); } static void ktrsyscall(struct ktr_syscall *ktr) { int argsize = ktr->ktr_argsize; register_t *ap; 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) { const 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'); } static void ktrsysret(struct ktr_sysret *ktr) { int ret = ktr->ktr_retval; int error = ktr->ktr_error; 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'); } static void ktrnamei(const char *cp, int len) { (void)printf("\"%.*s\"\n", len, cp); } static void ktremul(char *cp, int len) { 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); } static void ktrgenio(struct ktr_genio *ktr, int len) { char *dp = (char *)ktr + sizeof (struct ktr_genio); int datalen = len - sizeof (struct ktr_genio); static int screenwidth = 0; int col = 0, width; char visbuf[5], *cp; 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"); } static void ktrpsig(struct ktr_psig *psig) { (void)printf("SIG%s ", sys_signame[psig->signo]); if (psig->action == SIG_DFL) (void)printf("SIG_DFL code %d", psig->code); else (void)printf("caught handler=0x%lx mask=0x%x", (u_long)psig->action, psig->mask); switch (psig->signo) { case SIGSEGV: case SIGILL: case SIGBUS: case SIGFPE: printf(" addr=%p trapno=%d", psig->si.si_addr, psig->si.si_trapno); break; default: break; } printf("\n"); } static void ktrcsw(struct ktr_csw *cs) { (void)printf("%s %s\n", cs->out ? "stop" : "resume", cs->user ? "user" : "kernel"); } static void usage(void) { extern char *__progname; fprintf(stderr, "usage: %s " "[-dnlRT] [-e emulation] [-p pid] [-f trfile] [-m maxdata] " "[-t [ceinsw]]\n", __progname); exit(1); } static void setemul(const 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); }