* Copyright (c) 1988, 1993

/* $NetBSD: kdump.c,v 1.146 2025/03/06 06:36:25 rillig 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/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1988, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */

#ifndef lint
#if 0
static char sccsid[] = "@(#)kdump.c 8.4 (Berkeley) 4/28/95";
#else
__RCSID("$NetBSD: kdump.c,v 1.146 2025/03/06 06:36:25 rillig Exp $");
#endif
#endif /* not lint */

#include <sys/param.h>
#include <sys/file.h>
#define _KMEMUSER /* To get the pseudo errors defined */
#include <sys/errno.h>
#undef _KMEMUSER
#include <sys/mman.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/ktrace.h>
#include <sys/ioctl.h>
#include <sys/ptrace.h>
#include <sys/socket.h>
#include <sys/futex.h>

#include <ctype.h>
#include <err.h>
#include <inttypes.h>
#include <signal.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <vis.h>
#include <util.h>

#include <netinet/in.h>
#include <netinet/tcp.h>

#include "ktrace.h"
#include "setemul.h"

#include <sys/syscall.h>

#define CASERETURN(a) case a: return # a

#define TIMESTAMP_NONE 0x0
#define TIMESTAMP_ABSOLUTE 0x1
#define TIMESTAMP_ELAPSED 0x2
#define TIMESTAMP_RELATIVE 0x4

static int timestamp, decimal, plain, tail, maxdata = -1, numeric;
static int word_size = 0;
static pid_t do_pid = -1;
static const char *tracefile = NULL;
static struct ktr_header ktr_header;
static int emul_changed = 0;

#define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
#define small(v) (((long)(v) >= 0) && ((long)(v) < 10))

static const char * const ptrace_ops[] = {
PT_STRINGS
};

#ifdef PT_MACHDEP_STRINGS
static const char * const ptrace_machdep_ops[] = { PT_MACHDEP_STRINGS };
#endif

static const char * const linux_ptrace_ops[] = {
"PTRACE_TRACEME",
"PTRACE_PEEKTEXT", "PTRACE_PEEKDATA", "PTRACE_PEEKUSER",
"PTRACE_POKETEXT", "PTRACE_POKEDATA", "PTRACE_POKEUSER",
"PTRACE_CONT", "PTRACE_KILL", "PTRACE_SINGLESTEP",
NULL, NULL,
"PTRACE_GETREGS", "PTRACE_SETREGS", "PTRACE_GETFPREGS",
"PTRACE_SETFPREGS", "PTRACE_ATTACH", "PTRACE_DETACH",
NULL, NULL, NULL, NULL, NULL, NULL,
"PTRACE_SYSCALL",
};

static const char default_format[] = { "%n\t%E\t%x\n" };

static void fmtprint(const char *, const struct ioctlinfo *ii);
static int fread_tail(void *, size_t, size_t);
static int dumpheader(struct ktr_header *);
static int output_ts(const struct timespec *);
static void output_long(u_long, int);
static void ioctldecode(u_long);
static void ktrsyscall(struct ktr_syscall *);
static void ktrsysret(struct ktr_sysret *, int);
static void ktrnamei(char *, int);
static void ktremul(char *, size_t, size_t);
static void ktrgenio(struct ktr_genio *, int);
static void ktrpsig(void *, int);
static void ktrcsw(struct ktr_csw *);
static void ktruser(struct ktr_user *, int);
static void ktrmib(int *, int);
static void ktrexecfd(struct ktr_execfd *);
static void usage(void) __dead;
static void eprint(int);
static void rprint(register_t);
static const char *signame(long, int);
static void hexdump_buf(const void *, int, int);
static void visdump_buf(const void *, int, int);
static const struct ioctlinfo *find_ioctl(const char *);

int
main(int argc, char **argv)
{
unsigned int ktrlen, size;
int ch;
void *m;
int trpoints = 0;
int trset = 0;
const char *emul_name = "netbsd";
const char *format = default_format;
int col;
char *cp;

setprogname(argv[0]);

if (strcmp(getprogname(), "ioctlprint") == 0) {
const struct ioctlinfo *ii;
int list = 0;
int i;

while ((ch = getopt(argc, argv, "e:f:l")) != -1)
switch (ch) {
case 'e':
emul_name = optarg;
break;
case 'f':
if (format != default_format)
errx(1, "Too many formats");
format = optarg;
break;
case 'l':
list = 1;
break;
default:
usage();
break;
}

setemul(emul_name, 0, 0);
argv += optind;
argc -= optind;

if (argc < 1 && !list)
usage();

if (list) {
for (i = 0; ioctlinfo[i].name != NULL; i++) {
fmtprint(format, &ioctlinfo[i]);
}
return 0;
}

for (i = 0; i < argc; i++) {
if ((ii = find_ioctl(argv[i])) == NULL) {
warnx("Can't find ioctl `%s'", argv[i]);
continue;
}
fmtprint(format, ii);
}
return 0;
}

timestamp = TIMESTAMP_NONE;

while ((ch = getopt(argc, argv, "Ee:f:dlm:Nnp:RTt:xX:")) != -1) {
switch (ch) {
case 'E':
timestamp |= TIMESTAMP_ELAPSED;
break;
case 'e':
emul_name = strdup(optarg); /* it's safer to copy it */
break;
case 'f':
tracefile = optarg;
break;
case 'd':
decimal = 1;
break;
case 'l':
tail = 1;
break;
case 'p':
do_pid = strtoul(optarg, &cp, 0);
if (*cp != 0)
errx(1,"invalid number %s", optarg);
break;
case 'm':
maxdata = strtoul(optarg, &cp, 0);
if (*cp != 0)
errx(1,"invalid number %s", optarg);
break;
case 'N':
numeric++;
break;
case 'n':
plain++;
break;
case 'R':
timestamp |= TIMESTAMP_RELATIVE;
break;
case 'T':
timestamp |= TIMESTAMP_ABSOLUTE;
break;
case 't':
trset = 1;
trpoints = getpoints(trpoints, optarg);
if (trpoints < 0)
errx(1, "unknown trace point in %s", optarg);
break;
case 'x':
word_size = 1;
break;
case 'X':
word_size = strtoul(optarg, &cp, 0);
if (*cp != 0 || word_size & (word_size - 1) ||
word_size > 16 || word_size <= 0)
errx(1, "argument to -X must be "
"1, 2, 4, 8 or 16");
break;
default:
usage();
}
}
argv += optind;
argc -= optind;

if (!trset)
trpoints = ALL_POINTS;

if (tracefile == NULL) {
if (argc == 1) {
tracefile = argv[0];
argv++;
argc--;
} else
tracefile = DEF_TRACEFILE;
}

if (argc > 0)
usage();

setemul(emul_name, 0, 0);

m = malloc(size = 1024);
if (m == NULL)
errx(1, "malloc: %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) &&
(do_pid == -1 || ktr_header.ktr_pid == do_pid))
col = dumpheader(&ktr_header);
else
col = -1;
if ((ktrlen = ktr_header.ktr_len) > INT_MAX)
errx(1, "bogus length 0x%x", ktrlen);
if (ktrlen > size) {
while (ktrlen > size)
size *= 2;
m = realloc(m, size);
if (m == NULL)
errx(1, "realloc: %s", strerror(ENOMEM));
}
if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
errx(1, "data too short");
if (col == -1)
continue;

/* update context to match currently processed record */
ectx_sanify(ktr_header.ktr_pid);

switch (ktr_header.ktr_type) {
case KTR_SYSCALL:
ktrsyscall(m);
break;
case KTR_SYSRET:
ktrsysret(m, ktrlen);
break;
case KTR_NAMEI:
ktrnamei(m, ktrlen);
break;
case KTR_GENIO:
ktrgenio(m, ktrlen);
break;
case KTR_PSIG:
ktrpsig(m, ktrlen);
break;
case KTR_CSW:
ktrcsw(m);
break;
case KTR_EMUL:
ktremul(m, ktrlen, size);
break;
case KTR_USER:
ktruser(m, ktrlen);
break;
case KTR_EXEC_ARG:
case KTR_EXEC_ENV:
visdump_buf(m, ktrlen, col);
break;
case KTR_EXEC_FD:
ktrexecfd(m);
break;
case KTR_MIB:
ktrmib(m, ktrlen);
break;
default:
putchar('\n');
hexdump_buf(m, ktrlen, word_size ? word_size : 1);
}
if (tail)
(void)fflush(stdout);
}
return (0);
}

static void
fmtprint(const char *fmt, const struct ioctlinfo *ii)
{
int c;

while ((c = *fmt++) != '\0') {
switch (c) {
default:
putchar(c);
continue;
case '\\':
switch (c = *fmt) {
case '\0':
continue;
case 'n':
putchar('\n');
break;
case 't':
putchar('\t');
break;
}
break;
case '%':
switch (c = *fmt) {
case '\0':
continue;
case '%':
default:
putchar(c);
break;
case 'E':
printf("%s", ii->expr);
break;
case 'e':
ioctldecode(ii->value);
break;
case 'n':
printf("%s", ii->name);
break;
case 'x':
printf("%#lx", ii->value);
break;
case 'o':
printf("%#lo", ii->value);
break;
case 'd': case 'i':
printf("%ld", ii->value);
break;
}
break;
}
++fmt;
}
}

static int
fread_tail(void *buf, size_t num, size_t size)
{
int i;

while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
(void)sleep(1);
clearerr(stdin);
}
return (i);
}

static int
dumpheader(struct ktr_header *kth)
{
char unknown[64];
const char *type;
static struct timespec starttime, prevtime;
struct timespec temp;
int col;

if (__predict_false(kth->ktr_version != KTRFAC_VERSION(KTRFACv2)))
errx(EXIT_FAILURE, "Unsupported ktrace version %x",
kth->ktr_version);

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_USER:
type = "MISC";
break;
case KTR_EXEC_ENV:
type = "ENV";
break;
case KTR_EXEC_ARG:
type = "ARG";
break;
case KTR_EXEC_FD:
type = "FD";
break;
case KTR_SAUPCALL:
type = "SAU";
break;
case KTR_MIB:
type = "MIB";
break;
default:
(void)snprintf(unknown, sizeof(unknown), "UNKNOWN(%d)",
kth->ktr_type);
type = unknown;
}

col = printf("%6d %6d ", kth->ktr_pid, kth->ktr_lid);
col += printf("%-8.*s ", MAXCOMLEN, kth->ktr_comm);
if (timestamp) {
if (timestamp & TIMESTAMP_ABSOLUTE) {
temp.tv_sec = kth->ktr_ts.tv_sec;
temp.tv_nsec = kth->ktr_ts.tv_nsec;
col += output_ts(&temp);
}

if (timestamp & TIMESTAMP_ELAPSED) {
if (starttime.tv_sec == 0) {
starttime.tv_sec = kth->ktr_ts.tv_sec;
starttime.tv_nsec = kth->ktr_ts.tv_nsec;
temp.tv_sec = temp.tv_nsec = 0;
} else
timespecsub(&kth->ktr_ts, &starttime, &temp);
col += output_ts(&temp);
}

if (timestamp & TIMESTAMP_RELATIVE) {
if (prevtime.tv_sec == 0)
temp.tv_sec = temp.tv_nsec = 0;
else
timespecsub(&kth->ktr_ts, &prevtime, &temp);
prevtime.tv_sec = kth->ktr_ts.tv_sec;
prevtime.tv_nsec = kth->ktr_ts.tv_nsec;
col += output_ts(&temp);
}
}
col += printf("%-4s ", type);
return col;
}

static int
output_ts(const struct timespec *ts)
{
int col;

if (__predict_true(ts->tv_sec >= 0))
col = printf("%lld.%09ld ",
(long long)ts->tv_sec, (long)ts->tv_nsec);
else {
/*
* The time represented by a timespec object ts is always
*
* ts.tv_sec + ts.tv_nsec * 1e-9
*
* where ts.tv_sec may be negative but ts.tv_nsec is
* always in [0, 1e9). So, for example, -1/4 second is
* represented by the struct timespec object
*
* { .tv_sec = -1, .tv_nsec = 750000000 }
*/
const struct timespec zero_ts = { 0, 0 };
struct timespec abs_ts;
timespecsub(&zero_ts, ts, &abs_ts);
col = printf("-%lld.%09ld ",
(long long)abs_ts.tv_sec, (long)abs_ts.tv_nsec);
}
return col;
}

static void
output_long(u_long it, int as_x)
{
if (cur_emul->flags & EMUL_FLAG_NETBSD32)
printf(as_x ? "%#x" : "%d", (u_int)it);
else
printf(as_x ? "%#lx" : "%ld", it);
}

static const char *
fcntlname(u_long cmd)
{
switch (cmd) {
CASERETURN(F_DUPFD);
CASERETURN(F_GETFD);
CASERETURN(F_SETFD);
CASERETURN(F_GETFL);
CASERETURN(F_SETFL);
CASERETURN(F_GETOWN);
CASERETURN(F_SETOWN);
CASERETURN(F_GETLK);
CASERETURN(F_SETLK);
CASERETURN(F_SETLKW);
CASERETURN(F_CLOSEM);
CASERETURN(F_MAXFD);
CASERETURN(F_DUPFD_CLOEXEC);
CASERETURN(F_GETNOSIGPIPE);
CASERETURN(F_SETNOSIGPIPE);
default:
return NULL;
}
}

static const char *
sockproto(register_t proto)
{
switch (proto) {
CASERETURN(IPPROTO_IP);
CASERETURN(IPPROTO_ICMP);
CASERETURN(IPPROTO_IGMP);
CASERETURN(IPPROTO_GGP);
// CASERETURN(IPPROTO_IPV4);
CASERETURN(IPPROTO_IPIP);
CASERETURN(IPPROTO_TCP);
CASERETURN(IPPROTO_EGP);
CASERETURN(IPPROTO_PUP);
CASERETURN(IPPROTO_UDP);
CASERETURN(IPPROTO_IDP);
CASERETURN(IPPROTO_TP);
CASERETURN(IPPROTO_DCCP);
CASERETURN(IPPROTO_IPV6);
CASERETURN(IPPROTO_ROUTING);
CASERETURN(IPPROTO_FRAGMENT);
CASERETURN(IPPROTO_RSVP);
CASERETURN(IPPROTO_GRE);
CASERETURN(IPPROTO_ESP);
CASERETURN(IPPROTO_AH);
CASERETURN(IPPROTO_MOBILE);
// CASERETURN(IPPROTO_IPV6_ICMP);
CASERETURN(IPPROTO_ICMPV6);
CASERETURN(IPPROTO_NONE);
CASERETURN(IPPROTO_DSTOPTS);
CASERETURN(IPPROTO_EON);
CASERETURN(IPPROTO_ETHERIP);
CASERETURN(IPPROTO_ENCAP);
CASERETURN(IPPROTO_PIM);
CASERETURN(IPPROTO_IPCOMP);
CASERETURN(IPPROTO_VRRP);
// CASERETURN(IPPROTO_CARP);
CASERETURN(IPPROTO_L2TP);
CASERETURN(IPPROTO_SCTP);
CASERETURN(IPPROTO_PFSYNC);
CASERETURN(IPPROTO_RAW);
CASERETURN(IPPROTO_MAX);
CASERETURN(IPPROTO_DONE);
CASERETURN(SOL_SOCKET);
default:
return NULL;
}
}

static const char *
sockoptname(register_t optname)
{
switch (optname) {
CASERETURN(SO_ACCEPTCONN);
CASERETURN(SO_ACCEPTFILTER);
CASERETURN(SO_BROADCAST);
CASERETURN(SO_DEBUG);
CASERETURN(SO_DONTROUTE);
CASERETURN(SO_ERROR);
CASERETURN(SO_KEEPALIVE);
CASERETURN(SO_LINGER);
CASERETURN(SO_NOHEADER);
CASERETURN(SO_NOSIGPIPE);
CASERETURN(SO_OOBINLINE);
CASERETURN(SO_OVERFLOWED);
CASERETURN(SO_RCVBUF);
CASERETURN(SO_RCVLOWAT);
CASERETURN(SO_RCVTIMEO);
CASERETURN(SO_RERROR);
CASERETURN(SO_REUSEADDR);
CASERETURN(SO_REUSEPORT);
CASERETURN(SO_SNDBUF);
CASERETURN(SO_SNDLOWAT);
CASERETURN(SO_SNDTIMEO);
CASERETURN(SO_TIMESTAMP);
CASERETURN(SO_TYPE);
CASERETURN(SO_USELOOPBACK);
default:
return NULL;
}
}

static const char *
tcpoptname(register_t optname)
{
switch (optname) {
CASERETURN(TCP_NODELAY);
CASERETURN(TCP_MAXSEG);
CASERETURN(TCP_MD5SIG);
CASERETURN(TCP_KEEPIDLE);
CASERETURN(TCP_KEEPINTVL);
CASERETURN(TCP_KEEPCNT);
CASERETURN(TCP_KEEPINIT);
CASERETURN(TCP_INFO);
default:
return NULL;
}
}

static const char *
ipoptname(register_t optname)
{
switch (optname) {
CASERETURN(IP_OPTIONS);
CASERETURN(IP_HDRINCL);
CASERETURN(IP_TOS);
CASERETURN(IP_TTL);
CASERETURN(IP_RECVOPTS);
CASERETURN(IP_RECVRETOPTS);
CASERETURN(IP_RECVDSTADDR);
CASERETURN(IP_RETOPTS);
CASERETURN(IP_MULTICAST_IF);
CASERETURN(IP_MULTICAST_TTL);
CASERETURN(IP_MULTICAST_LOOP);
CASERETURN(IP_ADD_MEMBERSHIP);
CASERETURN(IP_DROP_MEMBERSHIP);
CASERETURN(IP_PORTALGO);
CASERETURN(IP_PORTRANGE);
CASERETURN(IP_RECVIF);
CASERETURN(IP_ERRORMTU);
CASERETURN(IP_IPSEC_POLICY);
CASERETURN(IP_RECVTTL);
CASERETURN(IP_MINTTL);
CASERETURN(IP_PKTINFO);
CASERETURN(IP_RECVPKTINFO);
CASERETURN(IP_BINDANY);
default:
return NULL;
}
}

static void
ioctldecode(u_long cmd)
{
char dirbuf[4], *dir = dirbuf;
int c;

if (~0xffffffffULL & cmd) {
output_long(cmd, 1);
return;
}

if (cmd & IOC_IN)
*dir++ = 'W';
if (cmd & IOC_OUT)
*dir++ = 'R';
*dir = '\0';

c = (cmd >> 8) & 0xff;
if (isprint(c))
printf("_IO%s('%c',", dirbuf, c);
else
printf("_IO%s(0x%02x,", dirbuf, c);
output_long(cmd & 0xff, decimal == 0);
if ((cmd & IOC_VOID) == 0) {
putchar(',');
output_long(IOCPARM_LEN(cmd), decimal == 0);
}
putchar(')');
}

static void
putprot(int pr)
{
const char *s = "";

if (pr == PROT_NONE) {
fputs("PROT_NONE", stdout);
return;
}

if (pr & PROT_READ) {
fputs("PROT_READ", stdout);
s = "|";
pr &= ~PROT_READ;
}

if (pr & PROT_WRITE) {
printf("%sPROT_WRITE", s);
pr &= ~PROT_WRITE;
s = "|";
}
if (pr & PROT_EXEC) {
printf("%sPROT_EXEC", s);
pr &= ~PROT_EXEC;
s = "|";
}
if (pr) {
printf("%s%#lx", s, (long)pr);
}
}

static const char *
futex_op_name(u_long op)
{
switch (op & FUTEX_CMD_MASK) {
CASERETURN(FUTEX_WAIT);
CASERETURN(FUTEX_WAKE);
CASERETURN(FUTEX_FD);
CASERETURN(FUTEX_REQUEUE);
CASERETURN(FUTEX_CMP_REQUEUE);
CASERETURN(FUTEX_WAKE_OP);
CASERETURN(FUTEX_LOCK_PI);
CASERETURN(FUTEX_UNLOCK_PI);
CASERETURN(FUTEX_TRYLOCK_PI);
CASERETURN(FUTEX_WAIT_BITSET);
CASERETURN(FUTEX_WAKE_BITSET);
CASERETURN(FUTEX_WAIT_REQUEUE_PI);
CASERETURN(FUTEX_CMP_REQUEUE_PI);
default:
return NULL;
}
#undef CASERETURN
}

static void
futexput(u_long op)
{
const char *opname = futex_op_name(op);
const char *s = "";

if (opname == NULL) {
printf("%#lx", op & (u_long)FUTEX_CMD_MASK);
} else {
fputs(opname, stdout);
}
op &= ~FUTEX_CMD_MASK;

if (op & FUTEX_PRIVATE_FLAG) {
fputs("_PRIVATE", stdout);
op &= ~FUTEX_PRIVATE_FLAG;
}

if (op & FUTEX_CLOCK_REALTIME) {
printf("%sFUTEX_CLOCK_REALTIME", s);
op &= ~FUTEX_CLOCK_REALTIME;
s = "|";
}

if (op) {
printf("%s%#lx", s, op);
}
}

static void
ktrsyscall(struct ktr_syscall *ktr)
{
int argcount;
const struct emulation *emul = cur_emul;
register_t *ap;
char c;
const char *cp;
const char *sys_name;

argcount = ktr->ktr_argsize / sizeof (*ap);

emul_changed = 0;

if (numeric ||
((ktr->ktr_code >= emul->nsysnames || ktr->ktr_code < 0))) {
sys_name = "?";
(void)printf("[%d]", ktr->ktr_code);
} else {
sys_name = emul->sysnames[ktr->ktr_code];
(void)printf("%s", sys_name);
}
#define NETBSD32_ "netbsd32_"
if (cur_emul->flags & EMUL_FLAG_NETBSD32) {
size_t len = strlen(NETBSD32_);
if (strncmp(sys_name, NETBSD32_, len) == 0)
sys_name += len;
}
#undef NETBSD32_

ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall));
if (argcount) {
c = '(';
if (plain) {
;

} else if (strcmp(sys_name, "exit_group") == 0 ||
(strcmp(emul->name, "linux") != 0 &&
strcmp(emul->name, "linux32") != 0 &&
strcmp(sys_name, "exit") == 0)) {
ectx_delete();

} else if (strcmp(sys_name, "ioctl") == 0 && argcount >= 2) {
(void)putchar('(');
output_long((long)*ap, !(decimal || small(*ap)));
ap++;
argcount--;
if ((cp = ioctlname(*ap)) != NULL)
(void)printf(",%s", cp);
else {
(void)putchar(',');
ioctldecode(*ap);
}
ap++;
argcount--;
c = ',';

} else if (strcmp(sys_name, "fcntl") == 0 && argcount >= 2) {
(void)putchar('(');
output_long((long)*ap, !(decimal || small(*ap)));
ap++;
argcount--;
if ((cp = fcntlname(*ap)) != NULL)
(void)printf(",%s", cp);
else {
(void)printf(",%#lx", (unsigned long)*ap);
}
ap++;
argcount--;
c = ',';

} else if ((strcmp(sys_name, "setsockopt") == 0 ||
strcmp(sys_name, "getsockopt") == 0 ||
strcmp(sys_name, "getsockopt2") == 0) && argcount >= 3) {
(void)putchar('(');
output_long((long)*ap, !(decimal || small(*ap)));
ap++;
argcount--;
register_t level = *ap;
if ((cp = sockproto(level)) != NULL) {
(void)printf(",%s", cp);
} else {
output_long((long)*ap,
!(decimal || small(*ap)));
}
ap++;
argcount--;
const char *(*f)(register_t);
switch (level) {
case SOL_SOCKET:
f = sockoptname;
break;
case IPPROTO_IP:
f = ipoptname;
break;
case IPPROTO_TCP:
f = tcpoptname;
break;
default:
f = NULL;
break;
}

if (f && (cp = (*f)(*ap)) != NULL)
(void)printf(",%s", cp);
else {
(void)putchar(',');
output_long((long)*ap,
!(decimal || small(*ap)));
}
ap++;
argcount--;
c = ',';

} else if ((strcmp(sys_name, "futex") == 0 ||
strcmp(sys_name, "__futex") == 0) &&
argcount > 2) {
/*
* Linux name is "futex".
* Native name is "__futex".
* Both have the same op argument.
*/
(void)putchar('(');
output_long((long)*ap, 1);
(void)putchar(',');
ap++;
argcount--;
futexput(*ap);
ap++;
argcount--;
c = ',';

} else if ((strstr(sys_name, "sigaction") != NULL ||
strstr(sys_name, "sigvec") != NULL) && argcount >= 1) {
(void)printf("(SIG%s", signame(ap[0], 1));
ap += 1;
argcount -= 1;
c = ',';

} else if ((strcmp(sys_name, "kill") == 0 ||
strcmp(sys_name, "killpg") == 0) && argcount >= 2) {
putchar('(');
output_long((long)ap[0], !(decimal || small(*ap)));
(void)printf(", SIG%s", signame(ap[1], 1));
ap += 2;
argcount -= 2;
c = ',';
} else if (strcmp(sys_name, "mprotect") == 0 && argcount >= 3) {
putchar('(');
output_long((long)ap[0], !(decimal || small(ap[0])));
c = ',';
putchar(c);
output_long((long)ap[1], !(decimal || small(ap[1])));
putchar(c);
putprot(ap[2]);
ap += 3;
argcount -= 3;
c = ',';
} else if (strcmp(sys_name, "mmap") == 0 && argcount >= 6) {
char buf[1024];
putchar('(');
output_long((long)ap[0], !(decimal || small(ap[0])));
c = ',';
putchar(c);
output_long((long)ap[1], !(decimal || small(ap[1])));
putchar(c);
putprot(ap[2]);
snprintb(buf, sizeof(buf), MAP_FMT, ap[3]);
printf(",%s", buf);
ap += 4;
argcount -= 4;
c = ',';
} else if (strcmp(sys_name, "ptrace") == 0 && argcount >= 1) {
putchar('(');
if (strcmp(emul->name, "linux") == 0 ||
strcmp(emul->name, "linux32") == 0) {
if ((long)*ap >= 0 && *ap <
(register_t)(sizeof(linux_ptrace_ops) /
sizeof(linux_ptrace_ops[0])))
(void)printf("%s",
linux_ptrace_ops[*ap]);
else
output_long((long)*ap, 1);
} else {
if ((long)*ap >= 0 && *ap < (register_t)
__arraycount(ptrace_ops))
(void)printf("%s", ptrace_ops[*ap]);
#ifdef PT_MACHDEP_STRINGS
else if (*ap >= PT_FIRSTMACH &&
*ap - PT_FIRSTMACH < (register_t)
__arraycount(ptrace_machdep_ops))
(void)printf("%s", ptrace_machdep_ops[*ap - PT_FIRSTMACH]);
#endif
else
output_long((long)*ap, 1);
}
ap++;
argcount--;
c = ',';

}
while (argcount > 0) {
putchar(c);
output_long((long)*ap, !(decimal || small(*ap)));
ap++;
argcount--;
c = ',';
}
(void)putchar(')');
}
(void)putchar('\n');
}

static void
ktrsysret(struct ktr_sysret *ktr, int len)
{
const struct emulation *emul;
int error = ktr->ktr_error;
int code = ktr->ktr_code;

if (emul_changed) {
/* In order to get system call name right in execve return */
emul = prev_emul;
emul_changed = 0;
} else
emul = cur_emul;

if (numeric || ((code >= emul->nsysnames || code < 0 || plain > 1)))
(void)printf("[%d] ", code);
else
(void)printf("%s ", emul->sysnames[code]);

switch (error) {
case 0:
rprint(ktr->ktr_retval);
if (len > (int)offsetof(struct ktr_sysret, ktr_retval_1) &&
ktr->ktr_retval_1 != 0) {
(void)printf(", ");
rprint(ktr->ktr_retval_1);
}
break;

default:
eprint(error);
break;
}
(void)putchar('\n');
}

static void
ktrexecfd(struct ktr_execfd *ktr)
{
static const char *dnames[] = { DTYPE_NAMES };
if (ktr->ktr_dtype < __arraycount(dnames))
printf("%s %d\n", dnames[ktr->ktr_dtype], ktr->ktr_fd);
else
printf("UNKNOWN(%u) %d\n", ktr->ktr_dtype, ktr->ktr_fd);
}

static void
rprint(register_t ret)
{

if (!plain) {
output_long(ret, 0);
if (!small(ret)) {
putchar('/');
output_long(ret, 1);
}
} else {
output_long(ret, !(decimal || small(ret)));
}
}

/*
* We print the original emulation's error numerically, but we
* translate it to netbsd to print it symbolically.
*/
static void
eprint(int e)
{
int i = e;

if (cur_emul->errnomap) {

/* No remapping for ERESTART and EJUSTRETURN */
/* Kludge for linux that has negative error numbers */
if (cur_emul->errnomap[2] > 0 && e < 0)
goto normal;

for (i = 0; i < cur_emul->nerrnomap; i++)
if (e == cur_emul->errnomap[i])
break;

if (i == cur_emul->nerrnomap) {
printf("-1 unknown errno %d", e);
return;
}
}

normal:
switch (i) {
case ERESTART:
(void)printf("RESTART");
break;

case EJUSTRETURN:
(void)printf("JUSTRETURN");
break;

default:
(void)printf("-1 errno %d", e);
if (!plain)
(void)printf(" %s", strerror(i));
}
}

static void
ktrnamei(char *cp, int len)
{

(void)printf("\"%.*s\"\n", len, cp);
}

static void
ktremul(char *name, size_t len, size_t bufsize)
{

if (len >= bufsize)
len = bufsize - 1;

name[len] = '\0';
setemul(name, ktr_header.ktr_pid, 1);
emul_changed = 1;

(void)printf("\"%s\"\n", name);
}

static void
hexdump_buf(const void *vdp, int datalen, int word_sz)
{
const char hex[] = "0123456789abcdef";
char chars[16], prev[16];
char bytes[16 * 3 + 4];
const unsigned char *dp = vdp;
const unsigned char *datalim = dp + datalen;
const unsigned char *line_end;
int off, l = 0, c;
char *cp, *bp;
int divmask = word_sz - 1; /* block size in bytes */
int gdelim = 3; /* gap between blocks */
int bsize = 2; /* increment for each byte */
int width;
int dupl = 0;
#if _BYTE_ORDER == _LITTLE_ENDIAN
int bswap = word_sz - 1;
#else
#define bswap 0
#endif

switch (word_sz) {
case 2:
gdelim = 2;
break;
case 1:
divmask = 7;
bsize = 3;
gdelim = 1;
break;
default:
break;
}
width = 16 * bsize + (16 / (divmask + 1)) * gdelim;
if (word_sz != 1)
width += 2;

for (off = 0; dp < datalim; off += l) {
memset(bytes, ' ', sizeof bytes);
line_end = dp + 16;
if (line_end >= datalim) {
line_end = datalim;
dupl |= 1; /* need to print */
} else {
if (dupl == 0 || memcmp(dp, prev, sizeof chars))
dupl |= 1;
}

if (!(dupl & 1)) {
/* This is a duplicate of the line above, count 'em */
dupl += 2;
dp = line_end;
continue;
}

if (dupl > 3) {
/* previous line as a duplicate */
if (dupl == 5)
/* Only one duplicate, print line */
printf("\t%-5.3x%.*s%.*s\n",
off - l, width, bytes, l, chars);
else
printf("\t%.*s\n",
snprintf(NULL, 0, "%3x", off), "*****");
}

for (l = 0, bp = bytes, cp = chars; dp < line_end; l++) {
c = *dp++;
prev[l] = c;
if ((l & divmask) == 0)
bp += gdelim;
bp[(l ^ bswap) * bsize] = hex[c >> 4];
bp[(l ^ bswap) * bsize + 1] = hex[c & 0xf];
*cp++ = isgraph(c) ? c : '.';
}

printf("\t%-5.3x%.*s%.*s\n", off, width, bytes, l, chars);
dupl = 2;
}
}

static void
visdump_buf(const void *vdp, int datalen, int col)
{
const unsigned char *dp = vdp;
char *cp;
int width;
char visbuf[5];
static int screenwidth = 0;

if (screenwidth == 0) {
struct winsize ws;

if (!plain && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
ws.ws_col > 8)
screenwidth = ws.ws_col;
else
screenwidth = 80;
}

(void)printf("\"");
col++;
for (; datalen > 0; datalen--, dp++) {
(void)svis(visbuf, *dp, VIS_CSTYLE,
datalen > 1 ? *(dp + 1) : 0, "\"\n");
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;
if (*cp == '\t')
width = 8;
}
col += width;
do {
(void)putchar(*cp++);
} while (*cp);
}
if (col == 0)
(void)printf(" ");
(void)printf("\"\n");
}

static void
ktrgenio(struct ktr_genio *ktr, int len)
{
int datalen = len - sizeof (struct ktr_genio);
char *dp = (char *)ktr + sizeof (struct ktr_genio);

if (ktr->ktr_fd != -1)
printf("fd %d ", ktr->ktr_fd);
printf("%s %d bytes\n",
ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen);
if (maxdata == 0)
return;
if (maxdata > 0 && datalen > maxdata)
datalen = maxdata;
if (word_size) {
hexdump_buf(dp, datalen, word_size);
return;
}
(void)printf(" ");
visdump_buf(dp, datalen, 7);
}

static void
ktrpsig(void *v, int len)
{
int signo, first;
struct {
struct ktr_psig ps;
siginfo_t si;
} *psig = v;
siginfo_t *si = &psig->si;
const char *code;

(void)printf("SIG%s ", signame(psig->ps.signo, 0));
if (psig->ps.action == SIG_DFL)
(void)printf("SIG_DFL");
else {
(void)printf("caught handler=%p mask=(", psig->ps.action);
first = 1;
for (signo = 1; signo < NSIG; signo++) {
if (sigismember(&psig->ps.mask, signo)) {
if (first)
first = 0;
else
(void)printf(",");
(void)printf("%d", signo);
}
}
(void)printf(")");
}
switch (len) {
case sizeof(struct ktr_psig):
if (psig->ps.code)
printf(" code=0x%x", psig->ps.code);
printf(psig->ps.action == SIG_DFL ? "\n" : ")\n");
return;
case sizeof(*psig):
if (si->si_code == 0) {
printf(": code=SI_USER sent by pid=%d, uid=%d)\n",
si->si_pid, si->si_uid);
return;
}

if (si->si_code < 0) {
switch (si->si_code) {
case SI_TIMER:
case SI_QUEUE:
printf(": code=%s sent by pid=%d, uid=%d with "
"sigval %p)\n", si->si_code == SI_TIMER ?
"SI_TIMER" : "SI_QUEUE", si->si_pid,
si->si_uid, si->si_value.sival_ptr);
return;
case SI_ASYNCIO:
case SI_MESGQ:
printf(": code=%s with sigval %p)\n",
si->si_code == SI_ASYNCIO ?
"SI_ASYNCIO" : "SI_MESGQ",
si->si_value.sival_ptr);
return;
case SI_LWP:
printf(": code=SI_LWP sent by pid=%d, "
"uid=%d)\n", si->si_pid, si->si_uid);
return;
default:
code = NULL;
break;
}
if (code)
printf(": code=%s unimplemented)\n", code);
else
printf(": code=%d unimplemented)\n",
si->si_code);
return;
}

if (si->si_code == SI_NOINFO) {
printf(": code=SI_NOINFO\n");
return;
}

code = siginfocodename(si->si_signo, si->si_code);
switch (si->si_signo) {
case SIGCHLD:
printf(": code=%s child pid=%d, uid=%d, "
"status=%u, utime=%lu, stime=%lu)\n",
code, si->si_pid,
si->si_uid, si->si_status,
(unsigned long) si->si_utime,
(unsigned long) si->si_stime);
return;
case SIGILL:
case SIGFPE:
case SIGSEGV:
case SIGBUS:
case SIGTRAP:
printf(": code=%s, addr=%p, trap=%d)\n",
code, si->si_addr, si->si_trap);
return;
case SIGIO:
printf(": code=%s, fd=%d, band=%lx)\n",
code, si->si_fd, si->si_band);
return;
default:
printf(": code=%s, errno=%d)\n",
code, si->si_errno);
return;
}
/*NOTREACHED*/
default:
warnx("Unhandled size %d for ktrpsig", len);
break;
}
}

static void
ktrcsw(struct ktr_csw *cs)
{

(void)printf("%s %s\n", cs->out ? "stop" : "resume",
cs->user ? "user" : "kernel");
}

static void
ktruser_msghdr(const char *name, const void *buf, size_t len)
{
struct msghdr m;

if (len != sizeof(m))
warnx("%.*s: len %zu != %zu", KTR_USER_MAXIDLEN, name, len,
sizeof(m));
memcpy(&m, buf, len);
printf("%.*s: [name=%p, namelen=%zu, iov=%p, iovlen=%zu, control=%p, "
"controllen=%zu, flags=%x]\n", KTR_USER_MAXIDLEN, name,
m.msg_name, (size_t)m.msg_namelen, m.msg_iov, (size_t)m.msg_iovlen,
m.msg_control, (size_t)m.msg_controllen, m.msg_flags);
}

static void
ktruser_soname(const char *name, const void *buf, size_t len)
{
char fmt[512];
sockaddr_snprintf(fmt, sizeof(fmt), "%a", buf);
printf("%.*s: [%s]\n", KTR_USER_MAXIDLEN, name, fmt);
}

static void
ktruser_xattr_name(const char *name, const void *buf, size_t len)
{
printf("%.*s: [%.*s]\n", KTR_USER_MAXIDLEN, name, (int)len,
(const char *)buf);
}

static void
ktruser_xattr_val(const char *name, const void *buf, size_t len)
{
const uint8_t *p = buf;
printf("%.*s: ", KTR_USER_MAXIDLEN, name);
for (size_t i = 0; i < len; i++)
printf("%.2x", *p++);
printf("\n");
}

static void
ktruser_xattr_list(const char *name, const void *buf, size_t len)
{
const uint8_t *p = buf, *ep = p + len;
printf("%.*s:", KTR_USER_MAXIDLEN, name);
while (p < ep) {
int l = *p++;
printf(" %.*s", l, p);
p += l;
}
printf("\n");
}

static void
ktruser_control(const char *name, const void *buf, size_t len)
{
struct cmsghdr m;

if (len < sizeof(m))
warnx("%.*s: len %zu < %zu", KTR_USER_MAXIDLEN, name, len,
sizeof(m));
memcpy(&m, buf, sizeof(m));
printf("%.*s: [len=%zu, level=%d, type=%d]\n", KTR_USER_MAXIDLEN, name,
(size_t)m.cmsg_len, m.cmsg_level, m.cmsg_type);
}

static void
ktruser_malloc(const char *name, const void *buf, size_t len)
{
struct ut { void *p; size_t s; void *r; } m;

if (len != sizeof(m))
warnx("%.*s: len %zu != %zu", KTR_USER_MAXIDLEN, name, len,
sizeof(m));
memcpy(&m, buf, len < sizeof(m) ? len : sizeof(m));
if (m.p == NULL && m.s == 0 && m.r == NULL)
printf("%.*s: malloc_init()\n", KTR_USER_MAXIDLEN, name);
else if (m.p != NULL && m.s != 0)
printf("%.*s: %p = realloc(%p, %zu)\n", KTR_USER_MAXIDLEN, name,
m.r, m.p, m.s);
else if (m.s == 0)
printf("%.*s: free(%p)\n", KTR_USER_MAXIDLEN, name, m.p);
else
printf("%.*s: %p = malloc(%zu)\n", KTR_USER_MAXIDLEN, name,
m.r, m.s);
}

static void
ktruser_misc(const char *name, const void *buf, size_t len)
{
size_t i;
const char *dta = buf;

printf("%.*s: %zu, ", KTR_USER_MAXIDLEN, name, len);
for (i = 0; i < len; i++)
printf("%02x", (unsigned char)dta[i]);
printf("\n");
}

static struct {
const char *name;
void (*func)(const char *, const void *, size_t);
} nv[] = {
{ "msghdr", ktruser_msghdr },
{ "mbsoname", ktruser_soname },
{ "mbcontrol", ktruser_control },
{ "malloc", ktruser_malloc },
{ "xattr-name", ktruser_xattr_name },
{ "xattr-val", ktruser_xattr_val },
{ "xattr-list", ktruser_xattr_list },
{ NULL, ktruser_misc },
};

static void
ktruser(struct ktr_user *usr, int len)
{
unsigned char *dta;

len -= sizeof(struct ktr_user);
dta = (unsigned char *)(usr + 1);
if (word_size) {
printf("%.*s:", KTR_USER_MAXIDLEN, usr->ktr_id);
printf("\n");
hexdump_buf(dta, len, word_size);
return;
}
for (size_t j = 0; j < __arraycount(nv); j++)
if (nv[j].name == NULL ||
strncmp(nv[j].name, usr->ktr_id, KTR_USER_MAXIDLEN) == 0) {
(*nv[j].func)(usr->ktr_id, dta, len);
break;
}
}

static void
ktrmib(int *namep, int len)
{
size_t i;

for (i = 0; i < (len / sizeof(*namep)); i++)
printf("%s%d", (i == 0) ? "" : ".", namep[i]);
printf("\n");
}

static const char *
signame(long sig, int xlat)
{
static char buf[64];

if (sig == 0)
return " 0";
else if (sig < 0 || sig >= NSIG) {
(void)snprintf(buf, sizeof(buf), "*unknown %ld*", sig);
return buf;
} else
return sys_signame[(xlat && cur_emul->signalmap != NULL) ?
cur_emul->signalmap[sig] : sig];
}

static void
usage(void)
{
if (strcmp(getprogname(), "ioctlprint") == 0) {
(void)fprintf(stderr, "Usage: %s [-l] [-e emulation] [-f format] <ioctl> ...\n",
getprogname());
} else {
(void)fprintf(stderr, "Usage: %s [-dElNnRT] [-e emulation] "
"[-f file] [-m maxdata] [-p pid]\n [-t trstr] "
"[-x | -X size] [file]\n", getprogname());
}
exit(1);
}

static const struct ioctlinfo *
find_ioctl_by_name(const char *name)
{
for (size_t i = 0; ioctlinfo[i].name != NULL; i++) {
if (strcmp(name, ioctlinfo[i].name) == 0)
return &ioctlinfo[i];
}
return NULL;
}

static const struct ioctlinfo *
find_ioctl_by_value(unsigned long value)
{
for (size_t i = 0; ioctlinfo[i].name != NULL; i++) {
if (value == ioctlinfo[i].value)
return &ioctlinfo[i];
}
return NULL;
}

static const struct ioctlinfo *
find_ioctl(const char *name)
{
if (isalpha((unsigned char)*name)) {
return find_ioctl_by_name(name);
}
int e;
unsigned long u = strtou(name, NULL, 0, 0, ULONG_MAX, &e);
if (e)
errc(1, e, "invalid argument: `%s'", name);
return find_ioctl_by_value(u);
}