File: [local] / src / usr.bin / kdump / kdump.c (download)
Revision 1.90, Wed Oct 8 04:02:46 2014 UTC (9 years, 8 months ago) by doug
Branch: MAIN
Changes since 1.89: +2 -2 lines
userland reallocarray audit.
Replace malloc() and realloc() calls that may have integer overflow in the
multiplication of the arguments with reallocarray().
ok deraadt@
|
/* $OpenBSD: kdump.c,v 1.90 2014/10/08 04:02:46 doug 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/vmmeter.h>
#include <sys/tty.h>
#include <sys/wait.h>
#define _KERNEL
#include <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 <poll.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.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_opt = -1;
#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 ktruser(struct ktr_user *, size_t);
static void setemul(const char *);
static void usage(void);
static void atfd(int);
static void polltimeout(int);
static void pgid(int);
static void wait4pid(int);
static void signame(int);
static void semctlname(int);
static void shmctlname(int);
static void semgetname(int);
static void flagsandmodename(int, int);
static void clockname(int);
static void sockoptlevelname(int);
static void ktraceopname(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_opt = 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_opt != -1 && pid_opt != 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;
case KTR_USER:
ktruser(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 = reallocarray(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;
case KTR_USER:
type = "USER";
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;
printf("%lld.%06ld ", (long long)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_GETXMMREGS
case PT_GETXMMREGS:
(void)printf("PT_GETXMMREGS");
break;
#endif
#ifdef PT_SETFPREGS
case PT_SETFPREGS:
(void)printf("PT_SETFPREGS");
break;
#endif
case PT_SETREGS:
(void)printf("PT_SETREGS");
break;
#ifdef PT_SETXMMREGS
case PT_SETXMMREGS:
(void)printf("PT_SETXMMREGS");
break;
#endif
#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_accept4:
pn(NULL);
pn(NULL);
pn(NULL);
pn(sockflagsname);
break;
case SYS_access:
pn(NULL);
pn(accessmodename);
break;
case SYS_chmod:
case SYS_fchmod:
case SYS_mkdir:
case SYS_mkfifo:
case SYS_mknod:
pn(NULL);
pn(modename);
break;
case SYS_umask:
pn(modename);
break;
case SYS_dup3:
pn(NULL);
pn(NULL);
pn(flagsname);
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(pgid);
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:
case SYS_mquery:
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_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_pipe2:
pn(NULL);
pn(flagsname);
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_shutdown:
pn(NULL);
pn(shutdownhowname);
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_poll:
pn(NULL);
pn(NULL);
pn(polltimeout);
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(wait4pid);
pn(NULL);
pn(wait4optname);
break;
case SYS_getrusage:
pn(rusagewho);
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;
case SYS_pathconf:
case SYS_fpathconf:
pn(NULL);
pn(pathconfname);
break;
case SYS_ktrace:
pn(NULL);
pn(ktraceopname);
pn(ktracefacname);
pn(pgid);
break;
case SYS_setitimer:
case SYS_getitimer:
pn(itimername);
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 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" },
{ "kthread" },
};
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_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
showbuf(unsigned char *dp, size_t datalen)
{
int i, j;
static int screenwidth;
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;
}
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
ktrgenio(struct ktr_genio *ktr, size_t len)
{
unsigned char *dp = (unsigned char *)ktr + sizeof(struct ktr_genio);
size_t datalen = len - sizeof(struct ktr_genio);
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;
showbuf(dp, datalen);
}
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
ktruser(struct ktr_user *usr, size_t len)
{
len -= sizeof(struct ktr_user);
printf("%.*s:", KTR_USER_MAXIDLEN, usr->ktr_id);
printf(" %zu bytes\n", len);
showbuf((unsigned char *)(usr + 1), len);
}
static void
usage(void)
{
extern char *__progname;
fprintf(stderr, "usage: %s "
"[-dHlnRrTXx] [-e emulation] [-f file] [-m maxdata] [-p pid]\n"
"%*s[-t [ceinstuw]]\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);
}
static void
polltimeout(int timeout)
{
if (timeout == INFTIM)
(void)printf("INFTIM");
else if (decimal)
(void)printf("%d", timeout);
else
(void)printf("%#x", timeout);
}
static void
pgid(int pid)
{
(void)printf("%d", pid);
}
static void
wait4pid(int pid)
{
if (pid == WAIT_ANY)
(void)printf("WAIT_ANY");
else if (pid == WAIT_MYPGRP)
(void)printf("WAIT_MYPGRP");
else
pgid(pid);
}
static void
signame(int sig)
{
if (sig > 0 && sig < NSIG)
(void)printf("SIG%s", sys_signame[sig]);
else
(void)printf("SIG %d", sig);
}
void
sigset(int ss)
{
int or = 0;
int cnt = 0;
int i;
for (i = 1; i < NSIG; i++)
if (sigismember(&ss, i))
cnt++;
if (cnt > (NSIG-1)/2) {
ss = ~ss;
putchar('~');
}
if (ss == 0) {
(void)printf("0<>");
return;
}
printf("%#x<", ss);
for (i = 1; i < NSIG; i++)
if (sigismember(&ss, i)) {
if (or) putchar('|'); else or=1;
signame(i);
}
printf(">");
}
static void
semctlname(int cmd)
{
switch (cmd) {
case GETNCNT:
(void)printf("GETNCNT");
break;
case GETPID:
(void)printf("GETPID");
break;
case GETVAL:
(void)printf("GETVAL");
break;
case GETALL:
(void)printf("GETALL");
break;
case GETZCNT:
(void)printf("GETZCNT");
break;
case SETVAL:
(void)printf("SETVAL");
break;
case SETALL:
(void)printf("SETALL");
break;
case IPC_RMID:
(void)printf("IPC_RMID");
break;
case IPC_SET:
(void)printf("IPC_SET");
break;
case IPC_STAT:
(void)printf("IPC_STAT");
break;
default: /* Should not reach */
(void)printf("<invalid=%ld>", (long)cmd);
}
}
static void
shmctlname(int cmd)
{
switch (cmd) {
case IPC_RMID:
(void)printf("IPC_RMID");
break;
case IPC_SET:
(void)printf("IPC_SET");
break;
case IPC_STAT:
(void)printf("IPC_STAT");
break;
default: /* Should not reach */
(void)printf("<invalid=%ld>", (long)cmd);
}
}
static void
semgetname(int flag)
{
int or = 0;
if_print_or(flag, IPC_CREAT, or);
if_print_or(flag, IPC_EXCL, or);
if_print_or(flag, SEM_R, or);
if_print_or(flag, SEM_A, or);
if_print_or(flag, (SEM_R>>3), or);
if_print_or(flag, (SEM_A>>3), or);
if_print_or(flag, (SEM_R>>6), or);
if_print_or(flag, (SEM_A>>6), or);
}
/*
* Only used by SYS_open. Unless O_CREAT is set in flags, the
* mode argument is unused (and often bogus and misleading).
*/
static void
flagsandmodename(int flags, int mode)
{
doflagsname(flags, 1);
if ((flags & O_CREAT) == O_CREAT) {
(void)putchar(',');
modename (mode);
} else if (!fancy) {
(void)putchar(',');
if (decimal) {
(void)printf("<unused>%ld", (long)mode);
} else {
(void)printf("<unused>%#lx", (long)mode);
}
}
}
static void
clockname(int clockid)
{
clocktypename(__CLOCK_TYPE(clockid));
if (__CLOCK_PTID(clockid) != 0)
printf("(%d)", __CLOCK_PTID(clockid));
}
/*
* [g|s]etsockopt's level argument can either be SOL_SOCKET or a value
* referring to a line in /etc/protocols . It might be appropriate
* to use getprotoent(3) here.
*/
static void
sockoptlevelname(int level)
{
if (level == SOL_SOCKET) {
(void)printf("SOL_SOCKET");
} else {
if (decimal) {
(void)printf("%ld", (long)level);
} else {
(void)printf("%#lx", (long)level);
}
}
}
static void
ktraceopname(int ops)
{
int invalid = 0;
printf("%#x<", ops);
switch (KTROP(ops)) {
case KTROP_SET:
printf("KTROP_SET");
break;
case KTROP_CLEAR:
printf("KTROP_CLEAR");
break;
case KTROP_CLEARFILE:
printf("KTROP_CLEARFILE");
break;
default:
printf("KTROP(%d)", KTROP(ops));
invalid = 1;
break;
}
if (ops & KTRFLAG_DESCEND) printf ("|%s", "KTRFLAG_DESCEND");
printf(">");
if (invalid || (ops & ~(KTROP((unsigned)-1) | KTRFLAG_DESCEND)))
(void)printf("<invalid>%ld", (long)ops);
}