File: [local] / src / usr.bin / kdump / kdump.c (download)
Revision 1.73, Fri Jun 29 05:09:58 2012 UTC (11 years, 11 months ago) by guenther
Branch: MAIN
Changes since 1.72: +2 -1 lines
sigpending() returns a sigset just like sigprocmask(), so decode it the same
ok matthew@ otto@
|
/* $OpenBSD: kdump.c,v 1.73 2012/06/29 05:09:58 guenther 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. 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.
*/
#include <sys/param.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/ktrace.h>
#include <sys/ioctl.h>
#include <sys/malloc.h>
#include <sys/namei.h>
#include <sys/ptrace.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/siginfo.h>
#include <sys/un.h>
#include <sys/vmmeter.h>
#include <sys/stat.h>
#include <sys/tty.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define _KERNEL
#include <sys/errno.h>
#undef _KERNEL
#include <ddb/db_var.h>
#include <machine/cpu.h>
#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <grp.h>
#include <pwd.h>
#include <unistd.h>
#include <vis.h>
#include "ktrace.h"
#include "kdump.h"
#include "kdump_subr.h"
#include "extern.h"
int timestamp, decimal, iohex, fancy = 1, maxdata = INT_MAX;
int needtid, resolv, tail;
char *tracefile = DEF_TRACEFILE;
struct ktr_header ktr_header;
pid_t pid = -1;
#define TIME_FORMAT "%b %e %T %Y"
#define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
#include <sys/syscall.h>
#include <compat/linux/linux_syscall.h>
#define KTRACE
#define PTRACE
#define NFSCLIENT
#define NFSSERVER
#define SYSVSEM
#define SYSVMSG
#define SYSVSHM
#define LFS
#include <kern/syscalls.c>
#include <compat/linux/linux_syscalls.c>
#undef KTRACE
#undef PTRACE
#undef NFSCLIENT
#undef NFSSERVER
#undef SYSVSEM
#undef SYSVMSG
#undef SYSVSHM
#undef LFS
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 },
{ "linux", linux_syscallnames, LINUX_SYS_MAXSYSCALL },
{ NULL, NULL, 0 }
};
static struct emulation *current;
static struct emulation *def_emul;
struct pid_emul {
struct emulation *e;
pid_t p;
};
static struct pid_emul *pe_table;
static size_t pe_size;
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",
"PT_SET_EVENT_MASK", "PT_GET_EVENT_MASK", "PT_GET_PROCESS_STATE",
"PT_GET_THREAD_FIRST", "PT_GET_THREAD_NEXT",
};
static int narg;
static register_t *ap;
static char sep;
static void mappidtoemul(pid_t, struct emulation *);
static struct emulation * findemul(pid_t);
static int fread_tail(void *, size_t, size_t);
static void dumpheader(struct ktr_header *);
static void ktrcsw(struct ktr_csw *);
static void ktremul(char *, size_t);
static void ktrgenio(struct ktr_genio *, size_t);
static void ktrnamei(const char *, size_t);
static void ktrpsig(struct ktr_psig *);
static void ktrsyscall(struct ktr_syscall *);
static const char *kresolvsysctl(int, int *, int);
static void ktrsysret(struct ktr_sysret *);
static void ktrstruct(char *, size_t);
static void setemul(const char *);
static void usage(void);
static void atfd(int);
int
main(int argc, char *argv[])
{
int ch, silent;
size_t ktrlen, size;
int trpoints = ALL_POINTS;
void *m;
def_emul = current = &emulations[0]; /* native */
while ((ch = getopt(argc, argv, "e:f:dHlm:nrRp:Tt:xX")) != -1)
switch (ch) {
case 'e':
setemul(optarg);
def_emul = current;
break;
case 'f':
tracefile = optarg;
break;
case 'd':
decimal = 1;
break;
case 'H':
needtid = 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':
resolv = 1;
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;
case 'x':
iohex = 1;
break;
case 'X':
iohex = 2;
break;
default:
usage();
}
if (argc > optind)
usage();
m = malloc(size = 1025);
if (m == NULL)
err(1, NULL);
if (!freopen(tracefile, "r", stdin))
err(1, "%s", tracefile);
if (fread_tail(&ktr_header, sizeof(struct ktr_header), 1) == 0 ||
ktr_header.ktr_type != htobe32(KTR_START))
errx(1, "%s: not a dump", tracefile);
while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
silent = 0;
if (pe_size == 0)
mappidtoemul(ktr_header.ktr_pid, current);
if (pid != -1 && pid != ktr_header.ktr_pid)
silent = 1;
if (silent == 0 && trpoints & (1<<ktr_header.ktr_type))
dumpheader(&ktr_header);
ktrlen = ktr_header.ktr_len;
if (ktrlen > size) {
void *newm;
if (ktrlen == SIZE_MAX)
errx(1, "data too long");
newm = realloc(m, ktrlen+1);
if (newm == NULL)
err(1, "realloc");
m = newm;
size = ktrlen;
}
if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
errx(1, "data too short");
if (silent)
continue;
if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
continue;
current = findemul(ktr_header.ktr_pid);
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);
mappidtoemul(ktr_header.ktr_pid, current);
break;
case KTR_STRUCT:
ktrstruct(m, ktrlen);
break;
}
if (tail)
(void)fflush(stdout);
}
exit(0);
}
static void
mappidtoemul(pid_t pid, struct emulation *emul)
{
size_t i;
struct pid_emul *tmp;
for (i = 0; i < pe_size; i++) {
if (pe_table[i].p == pid) {
pe_table[i].e = emul;
return;
}
}
tmp = realloc(pe_table, (pe_size + 1) * sizeof(*pe_table));
if (tmp == NULL)
err(1, NULL);
pe_table = tmp;
pe_table[pe_size].p = pid;
pe_table[pe_size].e = emul;
pe_size++;
}
static struct emulation*
findemul(pid_t pid)
{
size_t i;
for (i = 0; i < pe_size; i++)
if (pe_table[i].p == pid)
return pe_table[i].e;
return def_emul;
}
static int
fread_tail(void *buf, size_t size, size_t num)
{
int i;
while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
(void)sleep(1);
clearerr(stdin);
}
return (i);
}
static void
dumpheader(struct ktr_header *kth)
{
static struct timespec prevtime;
char unknown[64], *type;
struct timespec 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;
case KTR_STRUCT:
type = "STRU";
break;
default:
(void)snprintf(unknown, sizeof unknown, "UNKNOWN(%d)",
kth->ktr_type);
type = unknown;
}
(void)printf("%6ld", (long)kth->ktr_pid);
if (needtid)
(void)printf("/%-7ld", (long)kth->ktr_tid);
(void)printf(" %-8.*s ", MAXCOMLEN, kth->ktr_comm);
if (timestamp) {
if (timestamp == 2) {
timespecsub(&kth->ktr_time, &prevtime, &temp);
prevtime = kth->ktr_time;
} else
temp = kth->ktr_time;
(void)printf("%ld.%06ld ", temp.tv_sec, temp.tv_nsec / 1000);
}
(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',%lu" : ",_IO%s('%c',%#lx",
dirbuf, (int)((cmd >> 8) & 0xff), cmd & 0xff);
if ((cmd & IOC_VOID) == 0)
printf(decimal ? ",%lu)" : ",%#lx)", (cmd >> 16) & 0xff);
else
printf(")");
}
static void
ptracedecode(void)
{
if (*ap >= 0 && *ap <
sizeof(ptrace_ops) / sizeof(ptrace_ops[0]))
(void)printf("%s", ptrace_ops[*ap]);
else switch(*ap) {
#ifdef PT_GETFPREGS
case PT_GETFPREGS:
(void)printf("PT_GETFPREGS");
break;
#endif
case PT_GETREGS:
(void)printf("PT_GETREGS");
break;
#ifdef PT_SETFPREGS
case PT_SETFPREGS:
(void)printf("PT_SETFPREGS");
break;
#endif
case PT_SETREGS:
(void)printf("PT_SETREGS");
break;
#ifdef PT_STEP
case PT_STEP:
(void)printf("PT_STEP");
break;
#endif
#ifdef PT_WCOOKIE
case PT_WCOOKIE:
(void)printf("PT_WCOOKIE");
break;
#endif
default:
(void)printf("%ld", (long)*ap);
break;
}
sep = ',';
ap++;
narg--;
}
static void
pn(void (*f)(int))
{
if (sep)
(void)putchar(sep);
if (fancy && f != NULL)
f((int)*ap);
else if (decimal)
(void)printf("%ld", (long)*ap);
else
(void)printf("%#lx", (long)*ap);
ap++;
narg--;
sep = ',';
}
#ifdef __LP64__
#define plln() pn(NULL)
#elif _BYTE_ORDER == _LITTLE_ENDIAN
static void
plln(void)
{
long long val = ((long long)*ap) & 0xffffffff;
ap++;
val |= ((long long)*ap) << 32;
ap++;
narg -= 2;
if (sep)
(void)putchar(sep);
if (decimal)
(void)printf("%lld", val);
else
(void)printf("%#llx", val);
sep = ',';
}
#else
static void
plln(void)
{
long long val = ((long long)*ap) << 32;
ap++;
val |= ((long long)*ap) & 0xffffffff;
ap++;
narg -= 2;
if (sep)
(void)putchar(sep);
if (decimal)
(void)printf("%lld", val);
else
(void)printf("%#llx", val);
sep = ',';
}
#endif
static void
ktrsyscall(struct ktr_syscall *ktr)
{
narg = ktr->ktr_argsize / sizeof(register_t);
sep = '\0';
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));
(void)putchar('(');
if (current != &emulations[0])
goto nonnative;
switch (ktr->ktr_code) {
case SYS_ioctl: {
const char *cp;
pn(NULL);
if (!fancy)
break;
if ((cp = ioctlname(*ap)) != NULL)
(void)printf(",%s", cp);
else
ioctldecode(*ap);
ap++;
narg--;
break;
}
case SYS___sysctl: {
const char *s;
int *np, n, i, *top;
if (!fancy)
break;
n = ap[1];
if (n > CTL_MAXNAME)
n = CTL_MAXNAME;
np = top = (int *)(ap + 6);
for (i = 0; n--; np++, i++) {
if (sep)
putchar(sep);
if (resolv && (s = kresolvsysctl(i, top, *np)) != NULL)
printf("%s", s);
else
printf("%d", *np);
sep = '.';
}
sep = ',';
ap += 2;
narg -= 2;
break;
}
case SYS_ptrace:
if (!fancy)
break;
ptracedecode();
break;
case SYS_access:
pn(NULL);
pn(accessmodename);
break;
case SYS_chmod:
case SYS_fchmod:
pn(NULL);
pn(modename);
break;
case SYS_fcntl: {
int cmd;
int arg;
pn(NULL);
if (!fancy)
break;
cmd = ap[0];
arg = ap[1];
(void)putchar(',');
fcntlcmdname(cmd, arg);
ap += 2;
narg -= 2;
break;
}
case SYS_flock:
pn(NULL);
pn(flockname);
break;
case SYS_getrlimit:
case SYS_setrlimit:
pn(rlimitname);
break;
case SYS_getsockopt:
case SYS_setsockopt: {
int level;
pn(NULL);
level = *ap;
pn(sockoptlevelname);
if (level == SOL_SOCKET)
pn(sockoptname);
break;
}
case SYS_kill:
pn(NULL);
pn(signame);
break;
case SYS_lseek:
pn(NULL);
/* skip padding */
ap++;
narg--;
plln();
pn(whencename);
break;
case SYS_madvise:
pn(NULL);
pn(NULL);
pn(madvisebehavname);
break;
case SYS_minherit:
pn(NULL);
pn(NULL);
pn(minheritname);
break;
case SYS_mlockall:
pn(mlockallname);
break;
case SYS_mmap:
pn(NULL);
pn(NULL);
pn(mmapprotname);
pn(mmapflagsname);
pn(NULL);
/* skip padding */
ap++;
narg--;
plln();
break;
case SYS_mprotect:
pn(NULL);
pn(NULL);
pn(mmapprotname);
break;
case SYS_mquery:
pn(NULL);
pn(NULL);
pn(mmapprotname);
pn(mmapflagsname);
pn(NULL);
/* skip padding */
ap++;
narg--;
plln();
break;
case SYS_msync:
pn(NULL);
pn(NULL);
pn(msyncflagsname);
break;
case SYS_msgctl:
pn(NULL);
pn(shmctlname);
break;
case SYS_open: {
int flags;
int mode;
pn(NULL);
if (!fancy)
break;
flags = ap[0];
mode = ap[1];
(void)putchar(',');
flagsandmodename(flags, mode);
ap += 2;
narg -= 2;
break;
}
case SYS_pread:
case SYS_preadv:
case SYS_pwrite:
case SYS_pwritev:
pn(NULL);
pn(NULL);
pn(NULL);
/* skip padding */
ap++;
narg--;
plln();
break;
case SYS_recvmsg:
case SYS_sendmsg:
pn(NULL);
pn(NULL);
pn(sendrecvflagsname);
break;
case SYS_recvfrom:
case SYS_sendto:
pn(NULL);
pn(NULL);
pn(NULL);
pn(sendrecvflagsname);
break;
case SYS___semctl:
pn(NULL);
pn(NULL);
pn(semctlname);
break;
case SYS_semget:
pn(NULL);
pn(NULL);
pn(semgetname);
break;
case SYS_shmat:
pn(NULL);
pn(NULL);
pn(shmatname);
break;
case SYS_shmctl:
pn(NULL);
pn(shmctlname);
break;
case SYS_clock_gettime:
case SYS_clock_settime:
case SYS_clock_getres:
pn(clockname);
break;
case SYS_sigaction:
pn(signame);
break;
case SYS_sigprocmask:
pn(sigprocmaskhowname);
pn(sigset);
break;
case SYS_sigsuspend:
pn(sigset);
break;
case SYS_socket: {
int sockdomain = *ap;
pn(sockdomainname);
pn(socktypename);
if (sockdomain == PF_INET || sockdomain == PF_INET6)
pn(sockipprotoname);
break;
}
case SYS_socketpair:
pn(sockdomainname);
pn(socktypename);
break;
case SYS_truncate:
case SYS_ftruncate:
pn(NULL);
/* skip padding */
ap++;
narg--;
plln();
break;
case SYS_wait4:
pn(NULL);
pn(NULL);
pn(wait4optname);
break;
case SYS___thrsleep:
pn(NULL);
pn(clockname);
break;
case SYS___thrsigdivert:
pn(sigset);
break;
case SYS_faccessat:
pn(atfd);
pn(NULL);
pn(accessmodename);
pn(atflagsname);
break;
case SYS_fchmodat:
pn(atfd);
pn(NULL);
pn(modename);
pn(atflagsname);
break;
case SYS_fchownat:
pn(atfd);
pn(NULL);
pn(NULL);
pn(NULL);
pn(atflagsname);
break;
case SYS_fstatat:
pn(atfd);
pn(NULL);
pn(NULL);
pn(atflagsname);
break;
case SYS_linkat:
pn(atfd);
pn(NULL);
pn(atfd);
pn(NULL);
pn(atflagsname);
break;
case SYS_mkdirat:
case SYS_mkfifoat:
case SYS_mknodat:
pn(atfd);
pn(NULL);
pn(modename);
break;
case SYS_openat: {
int flags;
int mode;
pn(atfd);
pn(NULL);
if (!fancy)
break;
flags = ap[0];
mode = ap[1];
(void)putchar(',');
flagsandmodename(flags, mode);
ap += 2;
narg -= 2;
break;
}
case SYS_readlinkat:
pn(atfd);
break;
case SYS_renameat:
pn(atfd);
pn(NULL);
pn(atfd);
break;
case SYS_symlinkat:
pn(NULL);
pn(atfd);
break;
case SYS_unlinkat:
pn(atfd);
pn(NULL);
pn(atflagsname);
break;
case SYS_utimensat:
pn(atfd);
pn(NULL);
pn(NULL);
pn(atflagsname);
break;
}
nonnative:
while (narg) {
if (sep)
putchar(sep);
if (decimal)
(void)printf("%ld", (long)*ap);
else
(void)printf("%#lx", (long)*ap);
sep = ',';
ap++;
narg--;
}
(void)printf(")\n");
}
static struct ctlname topname[] = CTL_NAMES;
static struct ctlname kernname[] = CTL_KERN_NAMES;
static struct ctlname vmname[] = CTL_VM_NAMES;
static struct ctlname fsname[] = CTL_FS_NAMES;
static struct ctlname netname[] = CTL_NET_NAMES;
static struct ctlname hwname[] = CTL_HW_NAMES;
static struct ctlname username[] = CTL_USER_NAMES;
static struct ctlname debugname[CTL_DEBUG_MAXID];
static struct ctlname kernmallocname[] = CTL_KERN_MALLOC_NAMES;
static struct ctlname forkstatname[] = CTL_KERN_FORKSTAT_NAMES;
static struct ctlname nchstatsname[] = CTL_KERN_NCHSTATS_NAMES;
static struct ctlname kernprocname[] =
{
{ NULL },
{ "all" },
{ "pid" },
{ "pgrp" },
{ "session" },
{ "tty" },
{ "uid" },
{ "ruid" },
};
static struct ctlname ttysname[] = CTL_KERN_TTY_NAMES;
static struct ctlname semname[] = CTL_KERN_SEMINFO_NAMES;
static struct ctlname shmname[] = CTL_KERN_SHMINFO_NAMES;
static struct ctlname watchdogname[] = CTL_KERN_WATCHDOG_NAMES;
static struct ctlname tcname[] = CTL_KERN_TIMECOUNTER_NAMES;
#ifdef CTL_MACHDEP_NAMES
static struct ctlname machdepname[] = CTL_MACHDEP_NAMES;
#endif
static struct ctlname ddbname[] = CTL_DDB_NAMES;
#ifndef nitems
#define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
#endif
#define SETNAME(name) do { names = (name); limit = nitems(name); } while (0)
static const char *
kresolvsysctl(int depth, int *top, int idx)
{
struct ctlname *names;
size_t limit;
names = NULL;
switch (depth) {
case 0:
SETNAME(topname);
break;
case 1:
switch (top[0]) {
case CTL_KERN:
SETNAME(kernname);
break;
case CTL_VM:
SETNAME(vmname);
break;
case CTL_FS:
SETNAME(fsname);
break;
case CTL_NET:
SETNAME(netname);
break;
case CTL_DEBUG:
SETNAME(debugname);
break;
case CTL_HW:
SETNAME(hwname);
break;
#ifdef CTL_MACHDEP_NAMES
case CTL_MACHDEP:
SETNAME(machdepname);
break;
#endif
case CTL_USER:
SETNAME(username);
break;
case CTL_DDB:
SETNAME(ddbname);
break;
}
break;
case 2:
switch (top[0]) {
case CTL_KERN:
switch (top[1]) {
case KERN_MALLOCSTATS:
SETNAME(kernmallocname);
break;
case KERN_FORKSTAT:
SETNAME(forkstatname);
break;
case KERN_NCHSTATS:
SETNAME(nchstatsname);
break;
case KERN_TTY:
SETNAME(ttysname);
break;
case KERN_SEMINFO:
SETNAME(semname);
break;
case KERN_SHMINFO:
SETNAME(shmname);
break;
case KERN_WATCHDOG:
SETNAME(watchdogname);
break;
case KERN_PROC:
idx++; /* zero is valid at this level */
SETNAME(kernprocname);
break;
case KERN_TIMECOUNTER:
SETNAME(tcname);
break;
}
}
break;
}
if (names != NULL && idx > 0 && idx < limit)
return (names[idx].ctl_name);
return (NULL);
}
static void
ktrsysret(struct ktr_sysret *ktr)
{
register_t 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 (ret > 0 && (strcmp(current->sysnames[code], "fork") == 0 ||
strcmp(current->sysnames[code], "vfork") == 0 ||
strcmp(current->sysnames[code], "__tfork") == 0 ||
strcmp(current->sysnames[code], "clone") == 0))
mappidtoemul(ret, current);
}
if (error == 0) {
if (fancy) {
switch (current == &emulations[0] ? code : -1) {
case SYS_sigprocmask:
case SYS_sigpending:
sigset(ret);
break;
case SYS___thrsigdivert:
signame(ret);
break;
case -1: /* non-default emulation */
default:
(void)printf("%ld", (long)ret);
if (ret < 0 || ret > 9)
(void)printf("/%#lx", (long)ret);
}
} else {
if (decimal)
(void)printf("%ld", (long)ret);
else
(void)printf("%#lx", (long)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, size_t len)
{
(void)printf("\"%.*s\"\n", (int)len, cp);
}
static void
ktremul(char *cp, size_t 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, size_t len)
{
unsigned char *dp = (unsigned char *)ktr + sizeof(struct ktr_genio);
int i, j;
size_t datalen = len - sizeof(struct ktr_genio);
static int screenwidth = 0;
int col = 0, width, bpl;
unsigned char visbuf[5], *cp, c;
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 %zu bytes\n", ktr->ktr_fd,
ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen);
if (maxdata == 0)
return;
if (datalen > maxdata)
datalen = maxdata;
if (iohex && !datalen)
return;
if (iohex == 1) {
putchar('\t');
col = 8;
for (i = 0; i < datalen; i++) {
printf("%02x", dp[i]);
col += 3;
if (i < datalen - 1) {
if (col + 3 > screenwidth) {
printf("\n\t");
col = 8;
} else
putchar(' ');
}
}
putchar('\n');
return;
}
if (iohex == 2) {
bpl = (screenwidth - 13)/4;
if (bpl <= 0)
bpl = 1;
for (i = 0; i < datalen; i += bpl) {
printf(" %04x: ", i);
for (j = 0; j < bpl; j++) {
if (i+j >= datalen)
printf(" ");
else
printf("%02x ", dp[i+j]);
}
putchar(' ');
for (j = 0; j < bpl; j++) {
if (i+j >= datalen)
break;
c = dp[i+j];
if (!isprint(c))
c = '.';
putchar(c);
}
putchar('\n');
}
return;
}
(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");
else {
(void)printf("caught handler=0x%lx mask=",
(u_long)psig->action);
sigset(psig->mask);
}
if (psig->code) {
printf(" code ");
if (fancy) {
switch (psig->signo) {
case SIGILL:
sigill_name(psig->code);
break;
case SIGTRAP:
sigtrap_name(psig->code);
break;
case SIGEMT:
sigemt_name(psig->code);
break;
case SIGFPE:
sigfpe_name(psig->code);
break;
case SIGBUS:
sigbus_name(psig->code);
break;
case SIGSEGV:
sigsegv_name(psig->code);
break;
case SIGCHLD:
sigchld_name(psig->code);
break;
}
}
printf("<%d>", psig->code);
}
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
ktrsockaddr(struct sockaddr *sa)
{
/*
TODO: Support additional address families
#include <netnatm/natm.h>
struct sockaddr_natm *natm;
#include <netsmb/netbios.h>
struct sockaddr_nb *nb;
*/
char addr[64];
/*
* note: ktrstruct() has already verified that sa points to a
* buffer at least sizeof(struct sockaddr) bytes long and exactly
* sa->sa_len bytes long.
*/
printf("struct sockaddr { ");
sockfamilyname(sa->sa_family);
printf(", ");
#define check_sockaddr_len(n) \
if (sa_##n->s##n##_len < sizeof(struct sockaddr_##n)) { \
printf("invalid"); \
break; \
}
switch(sa->sa_family) {
case AF_INET: {
struct sockaddr_in *sa_in;
sa_in = (struct sockaddr_in *)sa;
check_sockaddr_len(in);
inet_ntop(AF_INET, &sa_in->sin_addr, addr, sizeof addr);
printf("%s:%u", addr, ntohs(sa_in->sin_port));
break;
}
case AF_INET6: {
struct sockaddr_in6 *sa_in6;
sa_in6 = (struct sockaddr_in6 *)sa;
check_sockaddr_len(in6);
inet_ntop(AF_INET6, &sa_in6->sin6_addr, addr, sizeof addr);
printf("[%s]:%u", addr, htons(sa_in6->sin6_port));
break;
}
#ifdef IPX
case AF_IPX: {
struct sockaddr_ipx *sa_ipx;
sa_ipx = (struct sockaddr_ipx *)sa;
check_sockaddr_len(ipx);
/* XXX wish we had ipx_ntop */
printf("%s", ipx_ntoa(sa_ipx->sipx_addr));
break;
}
#endif
case AF_UNIX: {
struct sockaddr_un *sa_un;
sa_un = (struct sockaddr_un *)sa;
if (sa_un->sun_len <= sizeof(sa_un->sun_len) +
sizeof(sa_un->sun_family)) {
printf("invalid");
break;
}
printf("\"%.*s\"", (int)(sa_un->sun_len -
sizeof(sa_un->sun_len) - sizeof(sa_un->sun_family)),
sa_un->sun_path);
break;
}
default:
printf("unknown address family");
}
printf(" }\n");
}
static void
print_time(time_t t, int relative)
{
char timestr[PATH_MAX + 4];
struct tm *tm;
if (resolv == 0 || relative)
printf("%jd", (intmax_t)t);
else {
tm = localtime(&t);
(void)strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
printf("\"%s\"", timestr);
}
}
static void
print_timespec(const struct timespec *tsp, int relative)
{
print_time(tsp->tv_sec, relative);
if (tsp->tv_nsec != 0)
printf(".%09ld", tsp->tv_nsec);
}
static void
ktrstat(const struct stat *statp)
{
char mode[12];
struct passwd *pwd;
struct group *grp;
/*
* note: ktrstruct() has already verified that statp points to a
* buffer exactly sizeof(struct stat) bytes long.
*/
printf("struct stat { ");
strmode(statp->st_mode, mode);
printf("dev=%d, ino=%u, mode=%s, nlink=%u, ",
statp->st_dev, statp->st_ino, mode, statp->st_nlink);
if (resolv == 0 || (pwd = getpwuid(statp->st_uid)) == NULL)
printf("uid=%u, ", statp->st_uid);
else
printf("uid=\"%s\", ", pwd->pw_name);
if (resolv == 0 || (grp = getgrgid(statp->st_gid)) == NULL)
printf("gid=%u, ", statp->st_gid);
else
printf("gid=\"%s\", ", grp->gr_name);
printf("rdev=%d, ", statp->st_rdev);
printf("atime=");
print_timespec(&statp->st_atim, 0);
printf(", mtime=");
print_timespec(&statp->st_mtim, 0);
printf(", ctime=");
print_timespec(&statp->st_ctim, 0);
printf(", size=%lld, blocks=%lld, blksize=%u, flags=0x%x, gen=0x%x",
statp->st_size, statp->st_blocks, statp->st_blksize,
statp->st_flags, statp->st_gen);
printf(" }\n");
}
static void
ktrtimespec(const struct timespec *tsp, int relative)
{
printf("struct timespec { ");
print_timespec(tsp, relative);
printf(" }\n");
}
static void
ktrtimeval(const struct timeval *tvp, int relative)
{
printf("struct timeval { ");
print_time(tvp->tv_sec, relative);
if (tvp->tv_usec != 0)
printf(".%06ld", tvp->tv_usec);
printf(" }\n");
}
static void
ktrsigaction(const struct sigaction *sa)
{
/*
* note: ktrstruct() has already verified that sa points to a
* buffer exactly sizeof(struct sigaction) bytes long.
*/
printf("struct sigaction { ");
if (sa->sa_handler == SIG_DFL)
printf("handler=SIG_DFL");
else if (sa->sa_handler == SIG_IGN)
printf("handler=SIG_IGN");
else if (sa->sa_flags & SA_SIGINFO)
printf("sigaction=%p", (void *)sa->sa_sigaction);
else
printf("handler=%p", (void *)sa->sa_handler);
printf(", mask=");
sigset(sa->sa_mask);
printf(", flags=");
sigactionflagname(sa->sa_flags);
printf(" }\n");
}
static void
print_rlim(rlim_t lim)
{
if (lim == RLIM_INFINITY)
printf("infinite");
else
printf("%llu", (unsigned long long)lim);
}
static void
ktrrlimit(const struct rlimit *limp)
{
printf("struct rlimit { ");
printf("cur=");
print_rlim(limp->rlim_cur);
printf(", max=");
print_rlim(limp->rlim_max);
printf(" }\n");
}
static void
ktrtfork(const struct __tfork *tf)
{
printf("struct __tfork { tcb=%p, tid=%p, stack=%p }\n",
tf->tf_tcb, (void *)tf->tf_tid, tf->tf_stack);
}
static void
ktrstruct(char *buf, size_t buflen)
{
char *name, *data;
size_t namelen, datalen;
int i;
for (name = buf, namelen = 0; namelen < buflen && name[namelen] != '\0';
++namelen)
/* nothing */;
if (namelen == buflen)
goto invalid;
if (name[namelen] != '\0')
goto invalid;
data = buf + namelen + 1;
datalen = buflen - namelen - 1;
if (datalen == 0)
goto invalid;
/* sanity check */
for (i = 0; i < namelen; ++i)
if (!isalpha((unsigned char)name[i]))
goto invalid;
if (strcmp(name, "stat") == 0) {
struct stat sb;
if (datalen != sizeof(struct stat))
goto invalid;
memcpy(&sb, data, datalen);
ktrstat(&sb);
} else if (strcmp(name, "sockaddr") == 0) {
struct sockaddr_storage ss;
if (datalen > sizeof(ss))
goto invalid;
memcpy(&ss, data, datalen);
if ((ss.ss_family != AF_UNIX &&
datalen < sizeof(struct sockaddr)) || datalen != ss.ss_len)
goto invalid;
ktrsockaddr((struct sockaddr *)&ss);
} else if (strcmp(name, "abstimespec") == 0 ||
strcmp(name, "reltimespec") == 0) {
struct timespec ts;
if (datalen != sizeof(ts))
goto invalid;
memcpy(&ts, data, datalen);
ktrtimespec(&ts, name[0] == 'r');
} else if (strcmp(name, "abstimeval") == 0 ||
strcmp(name, "reltimeval") == 0) {
struct timeval tv;
if (datalen != sizeof(tv))
goto invalid;
memcpy(&tv, data, datalen);
ktrtimeval(&tv, name[0] == 'r');
} else if (strcmp(name, "sigaction") == 0) {
struct sigaction sa;
if (datalen != sizeof(sa))
goto invalid;
memcpy(&sa, data, datalen);
ktrsigaction(&sa);
} else if (strcmp(name, "rlimit") == 0) {
struct rlimit lim;
if (datalen != sizeof(lim))
goto invalid;
memcpy(&lim, data, datalen);
ktrrlimit(&lim);
} else if (strcmp(name, "tfork") == 0) {
struct __tfork tf;
if (datalen != sizeof(tf))
goto invalid;
memcpy(&tf, data, datalen);
ktrtfork(&tf);
} else {
printf("unknown structure %s\n", name);
}
return;
invalid:
printf("invalid record\n");
}
static void
usage(void)
{
extern char *__progname;
fprintf(stderr, "usage: %s "
"[-dHlnRrTXx] [-e emulation] [-f file] [-m maxdata] [-p pid]\n"
"%*s[-t [ceinsw]]\n",
__progname, (int)(sizeof("usage: ") + strlen(__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);
}
static void
atfd(int fd)
{
if (fd == AT_FDCWD)
(void)printf("AT_FDCWD");
else if (decimal)
(void)printf("%d", fd);
else
(void)printf("%#x", fd);
}