freebsd-skq/usr.bin/kdump/kdump.c
jhb 005b66cec8 Decode the arguments passed to _umtx_op(). In particular, decode the
opcode.

MFC after:	1 week
Sponsored by:	Norse
2014-10-13 16:37:06 +00:00

2025 lines
43 KiB
C

/*-
* 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.
* 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 const 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 8.1 (Berkeley) 6/6/93";
#endif
#endif /* not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#define _KERNEL
extern int errno;
#include <sys/errno.h>
#undef _KERNEL
#include <sys/param.h>
#include <sys/capsicum.h>
#include <sys/errno.h>
#define _KERNEL
#include <sys/time.h>
#undef _KERNEL
#include <sys/uio.h>
#include <sys/ktrace.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/sysent.h>
#include <sys/umtx.h>
#include <sys/un.h>
#include <sys/queue.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <ctype.h>
#include <dlfcn.h>
#include <err.h>
#include <grp.h>
#include <inttypes.h>
#ifdef HAVE_LIBCAPSICUM
#include <libcapsicum.h>
#include <libcapsicum_grp.h>
#include <libcapsicum_pwd.h>
#include <libcapsicum_service.h>
#endif
#include <locale.h>
#include <netdb.h>
#include <nl_types.h>
#ifdef HAVE_LIBCAPSICUM
#include <nv.h>
#endif
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <time.h>
#include <unistd.h>
#include <vis.h>
#include "ktrace.h"
#include "kdump_subr.h"
u_int abidump(struct ktr_header *);
int fetchprocinfo(struct ktr_header *, u_int *);
int fread_tail(void *, int, int);
void dumpheader(struct ktr_header *);
void ktrsyscall(struct ktr_syscall *, u_int);
void ktrsysret(struct ktr_sysret *, u_int);
void ktrnamei(char *, int);
void hexdump(char *, int, int);
void visdump(char *, int, int);
void ktrgenio(struct ktr_genio *, int);
void ktrpsig(struct ktr_psig *);
void ktrcsw(struct ktr_csw *);
void ktrcsw_old(struct ktr_csw_old *);
void ktruser_malloc(void *);
void ktruser_rtld(int, void *);
void ktruser(int, void *);
void ktrcaprights(cap_rights_t *);
void ktrsockaddr(struct sockaddr *);
void ktrstat(struct stat *);
void ktrstruct(char *, size_t);
void ktrcapfail(struct ktr_cap_fail *);
void ktrfault(struct ktr_fault *);
void ktrfaultend(struct ktr_faultend *);
void limitfd(int fd);
void usage(void);
void ioctlname(unsigned long, int);
#define TIMESTAMP_NONE 0x0
#define TIMESTAMP_ABSOLUTE 0x1
#define TIMESTAMP_ELAPSED 0x2
#define TIMESTAMP_RELATIVE 0x4
extern const char *signames[], *syscallnames[];
extern int nsyscalls;
static int timestamp, decimal, fancy = 1, suppressdata, tail, threads, maxdata,
resolv = 0, abiflag = 0, syscallno = 0;
static const char *tracefile = DEF_TRACEFILE;
static struct ktr_header ktr_header;
#define TIME_FORMAT "%b %e %T %Y"
#define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
#define print_number(i,n,c) do { \
if (decimal) \
printf("%c%jd", c, (intmax_t)*i); \
else \
printf("%c%#jx", c, (uintmax_t)(u_register_t)*i); \
i++; \
n--; \
c = ','; \
} while (0)
#if defined(__amd64__) || defined(__i386__)
void linux_ktrsyscall(struct ktr_syscall *);
void linux_ktrsysret(struct ktr_sysret *);
extern char *linux_syscallnames[];
extern int nlinux_syscalls;
/*
* from linux.h
* Linux syscalls return negative errno's, we do positive and map them
*/
static int bsd_to_linux_errno[ELAST + 1] = {
-0, -1, -2, -3, -4, -5, -6, -7, -8, -9,
-10, -35, -12, -13, -14, -15, -16, -17, -18, -19,
-20, -21, -22, -23, -24, -25, -26, -27, -28, -29,
-30, -31, -32, -33, -34, -11,-115,-114, -88, -89,
-90, -91, -92, -93, -94, -95, -96, -97, -98, -99,
-100,-101,-102,-103,-104,-105,-106,-107,-108,-109,
-110,-111, -40, -36,-112,-113, -39, -11, -87,-122,
-116, -66, -6, -6, -6, -6, -6, -37, -38, -9,
-6, -6, -43, -42, -75,-125, -84, -95, -16, -74,
-72, -67, -71
};
#endif
struct proc_info
{
TAILQ_ENTRY(proc_info) info;
u_int sv_flags;
pid_t pid;
};
static TAILQ_HEAD(trace_procs, proc_info) trace_procs;
#ifdef HAVE_LIBCAPSICUM
static cap_channel_t *cappwd, *capgrp;
#endif
static void
strerror_init(void)
{
/*
* Cache NLS data before entering capability mode.
* XXXPJD: There should be strerror_init() and strsignal_init() in libc.
*/
(void)catopen("libc", NL_CAT_LOCALE);
}
static void
localtime_init(void)
{
time_t ltime;
/*
* Allow localtime(3) to cache /etc/localtime content before entering
* capability mode.
* XXXPJD: There should be localtime_init() in libc.
*/
(void)time(&ltime);
(void)localtime(&ltime);
}
#ifdef HAVE_LIBCAPSICUM
static int
cappwdgrp_setup(cap_channel_t **cappwdp, cap_channel_t **capgrpp)
{
cap_channel_t *capcas, *cappwdloc, *capgrploc;
const char *cmds[1], *fields[1];
capcas = cap_init();
if (capcas == NULL) {
warn("unable to contact casperd");
return (-1);
}
cappwdloc = cap_service_open(capcas, "system.pwd");
capgrploc = cap_service_open(capcas, "system.grp");
/* Casper capability no longer needed. */
cap_close(capcas);
if (cappwdloc == NULL || capgrploc == NULL) {
if (cappwdloc == NULL)
warn("unable to open system.pwd service");
if (capgrploc == NULL)
warn("unable to open system.grp service");
exit(1);
}
/* Limit system.pwd to only getpwuid() function and pw_name field. */
cmds[0] = "getpwuid";
if (cap_pwd_limit_cmds(cappwdloc, cmds, 1) < 0)
err(1, "unable to limit system.pwd service");
fields[0] = "pw_name";
if (cap_pwd_limit_fields(cappwdloc, fields, 1) < 0)
err(1, "unable to limit system.pwd service");
/* Limit system.grp to only getgrgid() function and gr_name field. */
cmds[0] = "getgrgid";
if (cap_grp_limit_cmds(capgrploc, cmds, 1) < 0)
err(1, "unable to limit system.grp service");
fields[0] = "gr_name";
if (cap_grp_limit_fields(capgrploc, fields, 1) < 0)
err(1, "unable to limit system.grp service");
*cappwdp = cappwdloc;
*capgrpp = capgrploc;
return (0);
}
#endif /* HAVE_LIBCAPSICUM */
int
main(int argc, char *argv[])
{
int ch, ktrlen, size;
void *m;
int trpoints = ALL_POINTS;
int drop_logged;
pid_t pid = 0;
u_int sv_flags;
setlocale(LC_CTYPE, "");
timestamp = TIMESTAMP_NONE;
while ((ch = getopt(argc,argv,"f:dElm:np:AHRrSsTt:")) != -1)
switch (ch) {
case 'A':
abiflag = 1;
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':
resolv = 1;
break;
case 'S':
syscallno = 1;
break;
case 's':
suppressdata = 1;
break;
case 'E':
timestamp |= TIMESTAMP_ELAPSED;
break;
case 'H':
threads = 1;
break;
case 'R':
timestamp |= TIMESTAMP_RELATIVE;
break;
case 'T':
timestamp |= TIMESTAMP_ABSOLUTE;
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 = malloc(size = 1025);
if (m == NULL)
errx(1, "%s", strerror(ENOMEM));
if (!freopen(tracefile, "r", stdin))
err(1, "%s", tracefile);
strerror_init();
localtime_init();
#ifdef HAVE_LIBCAPSICUM
if (resolv != 0) {
if (cappwdgrp_setup(&cappwd, &capgrp) < 0) {
cappwd = NULL;
capgrp = NULL;
}
}
if (resolv == 0 || (cappwd != NULL && capgrp != NULL)) {
if (cap_enter() < 0 && errno != ENOSYS)
err(1, "unable to enter capability mode");
}
#else
if (resolv == 0) {
if (cap_enter() < 0 && errno != ENOSYS)
err(1, "unable to enter capability mode");
}
#endif
limitfd(STDIN_FILENO);
limitfd(STDOUT_FILENO);
limitfd(STDERR_FILENO);
if (cap_sandboxed())
fprintf(stderr, "capability mode sandbox enabled\n");
TAILQ_INIT(&trace_procs);
drop_logged = 0;
while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
if (ktr_header.ktr_type & KTR_DROP) {
ktr_header.ktr_type &= ~KTR_DROP;
if (!drop_logged && threads) {
printf(
"%6jd %6jd %-8.*s Events dropped.\n",
(intmax_t)ktr_header.ktr_pid,
ktr_header.ktr_tid > 0 ?
(intmax_t)ktr_header.ktr_tid : 0,
MAXCOMLEN, ktr_header.ktr_comm);
drop_logged = 1;
} else if (!drop_logged) {
printf("%6jd %-8.*s Events dropped.\n",
(intmax_t)ktr_header.ktr_pid, MAXCOMLEN,
ktr_header.ktr_comm);
drop_logged = 1;
}
}
if (trpoints & (1<<ktr_header.ktr_type))
if (pid == 0 || ktr_header.ktr_pid == pid ||
ktr_header.ktr_tid == pid)
dumpheader(&ktr_header);
if ((ktrlen = ktr_header.ktr_len) < 0)
errx(1, "bogus length 0x%x", ktrlen);
if (ktrlen > size) {
m = 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 (fetchprocinfo(&ktr_header, (u_int *)m) != 0)
continue;
sv_flags = abidump(&ktr_header);
if (pid && ktr_header.ktr_pid != pid &&
ktr_header.ktr_tid != pid)
continue;
if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
continue;
drop_logged = 0;
switch (ktr_header.ktr_type) {
case KTR_SYSCALL:
#if defined(__amd64__) || defined(__i386__)
if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
linux_ktrsyscall((struct ktr_syscall *)m);
else
#endif
ktrsyscall((struct ktr_syscall *)m, sv_flags);
break;
case KTR_SYSRET:
#if defined(__amd64__) || defined(__i386__)
if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
linux_ktrsysret((struct ktr_sysret *)m);
else
#endif
ktrsysret((struct ktr_sysret *)m, sv_flags);
break;
case KTR_NAMEI:
case KTR_SYSCTL:
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:
if (ktrlen == sizeof(struct ktr_csw_old))
ktrcsw_old((struct ktr_csw_old *)m);
else
ktrcsw((struct ktr_csw *)m);
break;
case KTR_USER:
ktruser(ktrlen, m);
break;
case KTR_STRUCT:
ktrstruct(m, ktrlen);
break;
case KTR_CAPFAIL:
ktrcapfail((struct ktr_cap_fail *)m);
break;
case KTR_FAULT:
ktrfault((struct ktr_fault *)m);
break;
case KTR_FAULTEND:
ktrfaultend((struct ktr_faultend *)m);
break;
default:
printf("\n");
break;
}
if (tail)
fflush(stdout);
}
return 0;
}
void
limitfd(int fd)
{
cap_rights_t rights;
unsigned long cmd;
cap_rights_init(&rights, CAP_FSTAT);
cmd = 0;
switch (fd) {
case STDIN_FILENO:
cap_rights_set(&rights, CAP_READ);
break;
case STDOUT_FILENO:
cap_rights_set(&rights, CAP_IOCTL, CAP_WRITE);
cmd = TIOCGETA; /* required by isatty(3) in printf(3) */
break;
case STDERR_FILENO:
cap_rights_set(&rights, CAP_WRITE);
if (!suppressdata) {
cap_rights_set(&rights, CAP_IOCTL);
cmd = TIOCGWINSZ;
}
break;
default:
abort();
}
if (cap_rights_limit(fd, &rights) < 0 && errno != ENOSYS)
err(1, "unable to limit rights for descriptor %d", fd);
if (cmd != 0 && cap_ioctls_limit(fd, &cmd, 1) < 0 && errno != ENOSYS)
err(1, "unable to limit ioctls for descriptor %d", fd);
}
int
fread_tail(void *buf, int size, int num)
{
int i;
while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
sleep(1);
clearerr(stdin);
}
return (i);
}
int
fetchprocinfo(struct ktr_header *kth, u_int *flags)
{
struct proc_info *pi;
switch (kth->ktr_type) {
case KTR_PROCCTOR:
TAILQ_FOREACH(pi, &trace_procs, info) {
if (pi->pid == kth->ktr_pid) {
TAILQ_REMOVE(&trace_procs, pi, info);
break;
}
}
pi = malloc(sizeof(struct proc_info));
if (pi == NULL)
errx(1, "%s", strerror(ENOMEM));
pi->sv_flags = *flags;
pi->pid = kth->ktr_pid;
TAILQ_INSERT_TAIL(&trace_procs, pi, info);
return (1);
case KTR_PROCDTOR:
TAILQ_FOREACH(pi, &trace_procs, info) {
if (pi->pid == kth->ktr_pid) {
TAILQ_REMOVE(&trace_procs, pi, info);
free(pi);
break;
}
}
return (1);
}
return (0);
}
u_int
abidump(struct ktr_header *kth)
{
struct proc_info *pi;
const char *abi;
const char *arch;
u_int flags = 0;
TAILQ_FOREACH(pi, &trace_procs, info) {
if (pi->pid == kth->ktr_pid) {
flags = pi->sv_flags;
break;
}
}
if (abiflag == 0)
return (flags);
switch (flags & SV_ABI_MASK) {
case SV_ABI_LINUX:
abi = "L";
break;
case SV_ABI_FREEBSD:
abi = "F";
break;
default:
abi = "U";
break;
}
if (flags != 0) {
if (flags & SV_LP64)
arch = "64";
else
arch = "32";
} else
arch = "00";
printf("%s%s ", abi, arch);
return (flags);
}
void
dumpheader(struct ktr_header *kth)
{
static char unknown[64];
static struct timeval prevtime, prevtime_e, temp;
const char *type;
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_USER:
type = "USER";
break;
case KTR_STRUCT:
type = "STRU";
break;
case KTR_SYSCTL:
type = "SCTL";
break;
case KTR_PROCCTOR:
/* FALLTHROUGH */
case KTR_PROCDTOR:
return;
case KTR_CAPFAIL:
type = "CAP ";
break;
case KTR_FAULT:
type = "PFLT";
break;
case KTR_FAULTEND:
type = "PRET";
break;
default:
sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
type = unknown;
}
/*
* The ktr_tid field was previously the ktr_buffer field, which held
* the kernel pointer value for the buffer associated with data
* following the record header. It now holds a threadid, but only
* for trace files after the change. Older trace files still contain
* kernel pointers. Detect this and suppress the results by printing
* negative tid's as 0.
*/
if (threads)
printf("%6jd %6jd %-8.*s ", (intmax_t)kth->ktr_pid,
kth->ktr_tid > 0 ? (intmax_t)kth->ktr_tid : 0,
MAXCOMLEN, kth->ktr_comm);
else
printf("%6jd %-8.*s ", (intmax_t)kth->ktr_pid, MAXCOMLEN,
kth->ktr_comm);
if (timestamp) {
if (timestamp & TIMESTAMP_ABSOLUTE) {
printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
kth->ktr_time.tv_usec);
}
if (timestamp & TIMESTAMP_ELAPSED) {
if (prevtime_e.tv_sec == 0)
prevtime_e = kth->ktr_time;
timevalsub(&kth->ktr_time, &prevtime_e);
printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
kth->ktr_time.tv_usec);
timevaladd(&kth->ktr_time, &prevtime_e);
}
if (timestamp & TIMESTAMP_RELATIVE) {
temp = kth->ktr_time;
timevalsub(&kth->ktr_time, &prevtime);
prevtime = temp;
printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
kth->ktr_time.tv_usec);
}
}
printf("%s ", type);
}
#include <sys/syscall.h>
#define KTRACE
#include <sys/kern/syscalls.c>
#undef KTRACE
int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
void
ktrsyscall(struct ktr_syscall *ktr, u_int flags)
{
int narg = ktr->ktr_narg;
register_t *ip;
intmax_t arg;
if ((flags != 0 && ((flags & SV_ABI_MASK) != SV_ABI_FREEBSD)) ||
(ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0))
printf("[%d]", ktr->ktr_code);
else {
printf("%s", syscallnames[ktr->ktr_code]);
if (syscallno)
printf("[%d]", ktr->ktr_code);
}
ip = &ktr->ktr_args[0];
if (narg) {
char c = '(';
if (fancy &&
(flags == 0 || (flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) {
switch (ktr->ktr_code) {
case SYS_bindat:
case SYS_connectat:
case SYS_faccessat:
case SYS_fchmodat:
case SYS_fchownat:
case SYS_fstatat:
case SYS_futimesat:
case SYS_linkat:
case SYS_mkdirat:
case SYS_mkfifoat:
case SYS_mknodat:
case SYS_openat:
case SYS_readlinkat:
case SYS_renameat:
case SYS_unlinkat:
putchar('(');
atfdname(*ip, decimal);
c = ',';
ip++;
narg--;
break;
}
switch (ktr->ktr_code) {
case SYS_ioctl: {
print_number(ip, narg, c);
putchar(c);
ioctlname(*ip, decimal);
c = ',';
ip++;
narg--;
break;
}
case SYS_ptrace:
putchar('(');
ptraceopname(*ip);
c = ',';
ip++;
narg--;
break;
case SYS_access:
case SYS_eaccess:
case SYS_faccessat:
print_number(ip, narg, c);
putchar(',');
accessmodename(*ip);
ip++;
narg--;
break;
case SYS_open:
case SYS_openat:
print_number(ip, narg, c);
putchar(',');
flagsandmodename(ip[0], ip[1], decimal);
ip += 2;
narg -= 2;
break;
case SYS_wait4:
print_number(ip, narg, c);
print_number(ip, narg, c);
/*
* A flags value of zero is valid for
* wait4() but not for wait6(), so
* handle zero special here.
*/
if (*ip == 0) {
print_number(ip, narg, c);
} else {
putchar(',');
wait6optname(*ip);
ip++;
narg--;
}
break;
case SYS_wait6:
putchar('(');
idtypename(*ip, decimal);
c = ',';
ip++;
narg--;
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
wait6optname(*ip);
ip++;
narg--;
break;
case SYS_chmod:
case SYS_fchmod:
case SYS_lchmod:
print_number(ip, narg, c);
putchar(',');
modename(*ip);
ip++;
narg--;
break;
case SYS_mknod:
case SYS_mknodat:
print_number(ip, narg, c);
putchar(',');
modename(*ip);
ip++;
narg--;
break;
case SYS_getfsstat:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
getfsstatflagsname(*ip);
ip++;
narg--;
break;
case SYS_mount:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
mountflagsname(*ip);
ip++;
narg--;
break;
case SYS_unmount:
print_number(ip, narg, c);
putchar(',');
mountflagsname(*ip);
ip++;
narg--;
break;
case SYS_recvmsg:
case SYS_sendmsg:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
sendrecvflagsname(*ip);
ip++;
narg--;
break;
case SYS_recvfrom:
case SYS_sendto:
print_number(ip, narg, c);
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
sendrecvflagsname(*ip);
ip++;
narg--;
break;
case SYS_chflags:
case SYS_fchflags:
case SYS_lchflags:
print_number(ip, narg, c);
putchar(',');
modename(*ip);
ip++;
narg--;
break;
case SYS_kill:
print_number(ip, narg, c);
putchar(',');
signame(*ip);
ip++;
narg--;
break;
case SYS_reboot:
putchar('(');
rebootoptname(*ip);
ip++;
narg--;
break;
case SYS_umask:
putchar('(');
modename(*ip);
ip++;
narg--;
break;
case SYS_msync:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
msyncflagsname(*ip);
ip++;
narg--;
break;
#ifdef SYS_freebsd6_mmap
case SYS_freebsd6_mmap:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
mmapprotname(*ip);
putchar(',');
ip++;
narg--;
mmapflagsname(*ip);
ip++;
narg--;
break;
#endif
case SYS_mmap:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
mmapprotname(*ip);
putchar(',');
ip++;
narg--;
mmapflagsname(*ip);
ip++;
narg--;
break;
case SYS_mprotect:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
mmapprotname(*ip);
ip++;
narg--;
break;
case SYS_madvise:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
madvisebehavname(*ip);
ip++;
narg--;
break;
case SYS_setpriority:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
prioname(*ip);
ip++;
narg--;
break;
case SYS_fcntl:
print_number(ip, narg, c);
putchar(',');
fcntlcmdname(ip[0], ip[1], decimal);
ip += 2;
narg -= 2;
break;
case SYS_socket: {
int sockdomain;
putchar('(');
sockdomain = *ip;
sockdomainname(sockdomain);
ip++;
narg--;
putchar(',');
socktypenamewithflags(*ip);
ip++;
narg--;
if (sockdomain == PF_INET ||
sockdomain == PF_INET6) {
putchar(',');
sockipprotoname(*ip);
ip++;
narg--;
}
c = ',';
break;
}
case SYS_setsockopt:
case SYS_getsockopt:
print_number(ip, narg, c);
putchar(',');
sockoptlevelname(*ip, decimal);
if (*ip == SOL_SOCKET) {
ip++;
narg--;
putchar(',');
sockoptname(*ip);
}
ip++;
narg--;
break;
#ifdef SYS_freebsd6_lseek
case SYS_freebsd6_lseek:
print_number(ip, narg, c);
/* Hidden 'pad' argument, not in lseek(2) */
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
whencename(*ip);
ip++;
narg--;
break;
#endif
case SYS_lseek:
print_number(ip, narg, c);
/* Hidden 'pad' argument, not in lseek(2) */
print_number(ip, narg, c);
putchar(',');
whencename(*ip);
ip++;
narg--;
break;
case SYS_flock:
print_number(ip, narg, c);
putchar(',');
flockname(*ip);
ip++;
narg--;
break;
case SYS_mkfifo:
case SYS_mkfifoat:
case SYS_mkdir:
case SYS_mkdirat:
print_number(ip, narg, c);
putchar(',');
modename(*ip);
ip++;
narg--;
break;
case SYS_shutdown:
print_number(ip, narg, c);
putchar(',');
shutdownhowname(*ip);
ip++;
narg--;
break;
case SYS_socketpair:
putchar('(');
sockdomainname(*ip);
ip++;
narg--;
putchar(',');
socktypenamewithflags(*ip);
ip++;
narg--;
c = ',';
break;
case SYS_getrlimit:
case SYS_setrlimit:
putchar('(');
rlimitname(*ip);
ip++;
narg--;
c = ',';
break;
case SYS_quotactl:
print_number(ip, narg, c);
putchar(',');
quotactlname(*ip);
ip++;
narg--;
c = ',';
break;
case SYS_nfssvc:
putchar('(');
nfssvcname(*ip);
ip++;
narg--;
c = ',';
break;
case SYS_rtprio:
putchar('(');
rtprioname(*ip);
ip++;
narg--;
c = ',';
break;
case SYS___semctl:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
semctlname(*ip);
ip++;
narg--;
break;
case SYS_semget:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
semgetname(*ip);
ip++;
narg--;
break;
case SYS_msgctl:
print_number(ip, narg, c);
putchar(',');
shmctlname(*ip);
ip++;
narg--;
break;
case SYS_shmat:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
shmatname(*ip);
ip++;
narg--;
break;
case SYS_shmctl:
print_number(ip, narg, c);
putchar(',');
shmctlname(*ip);
ip++;
narg--;
break;
case SYS_shm_open:
print_number(ip, narg, c);
putchar(',');
flagsname(ip[0]);
printf(",0%o", (unsigned int)ip[1]);
ip += 3;
narg -= 3;
break;
case SYS_minherit:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
minheritname(*ip);
ip++;
narg--;
break;
case SYS_rfork:
putchar('(');
rforkname(*ip);
ip++;
narg--;
c = ',';
break;
case SYS_lio_listio:
putchar('(');
lio_listioname(*ip);
ip++;
narg--;
c = ',';
break;
case SYS_mlockall:
putchar('(');
mlockallname(*ip);
ip++;
narg--;
break;
case SYS_sched_setscheduler:
print_number(ip, narg, c);
putchar(',');
schedpolicyname(*ip);
ip++;
narg--;
break;
case SYS_sched_get_priority_max:
case SYS_sched_get_priority_min:
putchar('(');
schedpolicyname(*ip);
ip++;
narg--;
break;
case SYS_sendfile:
print_number(ip, narg, c);
print_number(ip, narg, c);
print_number(ip, narg, c);
print_number(ip, narg, c);
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
sendfileflagsname(*ip);
ip++;
narg--;
break;
case SYS_kldsym:
print_number(ip, narg, c);
putchar(',');
kldsymcmdname(*ip);
ip++;
narg--;
break;
case SYS_sigprocmask:
putchar('(');
sigprocmaskhowname(*ip);
ip++;
narg--;
c = ',';
break;
case SYS___acl_get_file:
case SYS___acl_set_file:
case SYS___acl_get_fd:
case SYS___acl_set_fd:
case SYS___acl_delete_file:
case SYS___acl_delete_fd:
case SYS___acl_aclcheck_file:
case SYS___acl_aclcheck_fd:
case SYS___acl_get_link:
case SYS___acl_set_link:
case SYS___acl_delete_link:
case SYS___acl_aclcheck_link:
print_number(ip, narg, c);
putchar(',');
acltypename(*ip);
ip++;
narg--;
break;
case SYS_sigaction:
putchar('(');
signame(*ip);
ip++;
narg--;
c = ',';
break;
case SYS_extattrctl:
print_number(ip, narg, c);
putchar(',');
extattrctlname(*ip);
ip++;
narg--;
break;
case SYS_nmount:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
mountflagsname(*ip);
ip++;
narg--;
break;
case SYS_thr_create:
print_number(ip, narg, c);
print_number(ip, narg, c);
putchar(',');
thrcreateflagsname(*ip);
ip++;
narg--;
break;
case SYS_thr_kill:
print_number(ip, narg, c);
putchar(',');
signame(*ip);
ip++;
narg--;
break;
case SYS_kldunloadf:
print_number(ip, narg, c);
putchar(',');
kldunloadfflagsname(*ip);
ip++;
narg--;
break;
case SYS_linkat:
case SYS_renameat:
case SYS_symlinkat:
print_number(ip, narg, c);
putchar(',');
atfdname(*ip, decimal);
ip++;
narg--;
break;
case SYS_cap_fcntls_limit:
print_number(ip, narg, c);
putchar(',');
arg = *ip;
ip++;
narg--;
capfcntlname(arg);
break;
case SYS_posix_fadvise:
print_number(ip, narg, c);
print_number(ip, narg, c);
print_number(ip, narg, c);
(void)putchar(',');
fadvisebehavname((int)*ip);
ip++;
narg--;
break;
case SYS_procctl:
putchar('(');
idtypename(*ip, decimal);
c = ',';
ip++;
narg--;
print_number(ip, narg, c);
putchar(',');
procctlcmdname(*ip);
ip++;
narg--;
break;
case SYS__umtx_op:
print_number(ip, narg, c);
putchar(',');
umtxopname(*ip);
switch (*ip) {
case UMTX_OP_CV_WAIT:
ip++;
narg--;
putchar(',');
umtxcvwaitflags(*ip);
break;
case UMTX_OP_RW_RDLOCK:
ip++;
narg--;
putchar(',');
umtxrwlockflags(*ip);
break;
}
ip++;
narg--;
}
}
while (narg > 0) {
print_number(ip, narg, c);
}
putchar(')');
}
putchar('\n');
}
void
ktrsysret(struct ktr_sysret *ktr, u_int flags)
{
register_t ret = ktr->ktr_retval;
int error = ktr->ktr_error;
int code = ktr->ktr_code;
if ((flags != 0 && ((flags & SV_ABI_MASK) != SV_ABI_FREEBSD)) ||
(code >= nsyscalls || code < 0))
printf("[%d] ", code);
else {
printf("%s", syscallnames[code]);
if (syscallno)
printf("[%d]", code);
printf(" ");
}
if (error == 0) {
if (fancy) {
printf("%ld", (long)ret);
if (ret < 0 || ret > 9)
printf("/%#lx", (unsigned long)ret);
} else {
if (decimal)
printf("%ld", (long)ret);
else
printf("%#lx", (unsigned long)ret);
}
} else if (error == ERESTART)
printf("RESTART");
else if (error == EJUSTRETURN)
printf("JUSTRETURN");
else {
printf("-1 errno %d", ktr->ktr_error);
if (fancy)
printf(" %s", strerror(ktr->ktr_error));
}
putchar('\n');
}
void
ktrnamei(char *cp, int len)
{
printf("\"%.*s\"\n", len, cp);
}
void
hexdump(char *p, int len, int screenwidth)
{
int n, i;
int width;
width = 0;
do {
width += 2;
i = 13; /* base offset */
i += (width / 2) + 1; /* spaces every second byte */
i += (width * 2); /* width of bytes */
i += 3; /* " |" */
i += width; /* each byte */
i += 1; /* "|" */
} while (i < screenwidth);
width -= 2;
for (n = 0; n < len; n += width) {
for (i = n; i < n + width; i++) {
if ((i % width) == 0) { /* beginning of line */
printf(" 0x%04x", i);
}
if ((i % 2) == 0) {
printf(" ");
}
if (i < len)
printf("%02x", p[i] & 0xff);
else
printf(" ");
}
printf(" |");
for (i = n; i < n + width; i++) {
if (i >= len)
break;
if (p[i] >= ' ' && p[i] <= '~')
printf("%c", p[i]);
else
printf(".");
}
printf("|\n");
}
if ((i % width) != 0)
printf("\n");
}
void
visdump(char *dp, int datalen, int screenwidth)
{
int col = 0;
char *cp;
int width;
char visbuf[5];
printf(" \"");
col = 8;
for (;datalen > 0; datalen--, dp++) {
vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
cp = visbuf;
/*
* Keep track of printables and
* space chars (like fold(1)).
*/
if (col == 0) {
putchar('\t');
col = 8;
}
switch(*cp) {
case '\n':
col = 0;
putchar('\n');
continue;
case '\t':
width = 8 - (col&07);
break;
default:
width = strlen(cp);
}
if (col + width > (screenwidth-2)) {
printf("\\\n\t");
col = 8;
}
col += width;
do {
putchar(*cp++);
} while (*cp);
}
if (col == 0)
printf(" ");
printf("\"\n");
}
void
ktrgenio(struct ktr_genio *ktr, int len)
{
int datalen = len - sizeof (struct ktr_genio);
char *dp = (char *)ktr + sizeof (struct ktr_genio);
static int screenwidth = 0;
int i, binary;
printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
datalen == 1 ? "" : "s");
if (suppressdata)
return;
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 (maxdata && datalen > maxdata)
datalen = maxdata;
for (i = 0, binary = 0; i < datalen && binary == 0; i++) {
if (dp[i] >= 32 && dp[i] < 127)
continue;
if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
continue;
binary = 1;
}
if (binary)
hexdump(dp, datalen, screenwidth);
else
visdump(dp, datalen, screenwidth);
}
const char *signames[] = {
"NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT", /* 1 - 6 */
"EMT", "FPE", "KILL", "BUS", "SEGV", "SYS", /* 7 - 12 */
"PIPE", "ALRM", "TERM", "URG", "STOP", "TSTP", /* 13 - 18 */
"CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU", /* 19 - 24 */
"XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1", /* 25 - 30 */
"USR2", NULL, /* 31 - 32 */
};
void
ktrpsig(struct ktr_psig *psig)
{
if (psig->signo > 0 && psig->signo < NSIG)
printf("SIG%s ", signames[psig->signo]);
else
printf("SIG %d ", psig->signo);
if (psig->action == SIG_DFL) {
printf("SIG_DFL code=");
sigcodename(psig->signo, psig->code);
putchar('\n');
} else {
printf("caught handler=0x%lx mask=0x%x code=",
(u_long)psig->action, psig->mask.__bits[0]);
sigcodename(psig->signo, psig->code);
putchar('\n');
}
}
void
ktrcsw_old(struct ktr_csw_old *cs)
{
printf("%s %s\n", cs->out ? "stop" : "resume",
cs->user ? "user" : "kernel");
}
void
ktrcsw(struct ktr_csw *cs)
{
printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
cs->user ? "user" : "kernel", cs->wmesg);
}
#define UTRACE_DLOPEN_START 1
#define UTRACE_DLOPEN_STOP 2
#define UTRACE_DLCLOSE_START 3
#define UTRACE_DLCLOSE_STOP 4
#define UTRACE_LOAD_OBJECT 5
#define UTRACE_UNLOAD_OBJECT 6
#define UTRACE_ADD_RUNDEP 7
#define UTRACE_PRELOAD_FINISHED 8
#define UTRACE_INIT_CALL 9
#define UTRACE_FINI_CALL 10
struct utrace_rtld {
char sig[4]; /* 'RTLD' */
int event;
void *handle;
void *mapbase;
size_t mapsize;
int refcnt;
char name[MAXPATHLEN];
};
void
ktruser_rtld(int len, void *p)
{
struct utrace_rtld *ut = p;
unsigned char *cp;
void *parent;
int mode;
switch (ut->event) {
case UTRACE_DLOPEN_START:
mode = ut->refcnt;
printf("dlopen(%s, ", ut->name);
switch (mode & RTLD_MODEMASK) {
case RTLD_NOW:
printf("RTLD_NOW");
break;
case RTLD_LAZY:
printf("RTLD_LAZY");
break;
default:
printf("%#x", mode & RTLD_MODEMASK);
}
if (mode & RTLD_GLOBAL)
printf(" | RTLD_GLOBAL");
if (mode & RTLD_TRACE)
printf(" | RTLD_TRACE");
if (mode & ~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE))
printf(" | %#x", mode &
~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE));
printf(")\n");
break;
case UTRACE_DLOPEN_STOP:
printf("%p = dlopen(%s) ref %d\n", ut->handle, ut->name,
ut->refcnt);
break;
case UTRACE_DLCLOSE_START:
printf("dlclose(%p) (%s, %d)\n", ut->handle, ut->name,
ut->refcnt);
break;
case UTRACE_DLCLOSE_STOP:
printf("dlclose(%p) finished\n", ut->handle);
break;
case UTRACE_LOAD_OBJECT:
printf("RTLD: loaded %p @ %p - %p (%s)\n", ut->handle,
ut->mapbase, (char *)ut->mapbase + ut->mapsize - 1,
ut->name);
break;
case UTRACE_UNLOAD_OBJECT:
printf("RTLD: unloaded %p @ %p - %p (%s)\n", ut->handle,
ut->mapbase, (char *)ut->mapbase + ut->mapsize - 1,
ut->name);
break;
case UTRACE_ADD_RUNDEP:
parent = ut->mapbase;
printf("RTLD: %p now depends on %p (%s, %d)\n", parent,
ut->handle, ut->name, ut->refcnt);
break;
case UTRACE_PRELOAD_FINISHED:
printf("RTLD: LD_PRELOAD finished\n");
break;
case UTRACE_INIT_CALL:
printf("RTLD: init %p for %p (%s)\n", ut->mapbase, ut->handle,
ut->name);
break;
case UTRACE_FINI_CALL:
printf("RTLD: fini %p for %p (%s)\n", ut->mapbase, ut->handle,
ut->name);
break;
default:
cp = p;
cp += 4;
len -= 4;
printf("RTLD: %d ", len);
while (len--)
if (decimal)
printf(" %d", *cp++);
else
printf(" %02x", *cp++);
printf("\n");
}
}
struct utrace_malloc {
void *p;
size_t s;
void *r;
};
void
ktruser_malloc(void *p)
{
struct utrace_malloc *ut = p;
if (ut->p == (void *)(intptr_t)(-1))
printf("malloc_init()\n");
else if (ut->s == 0)
printf("free(%p)\n", ut->p);
else if (ut->p == NULL)
printf("%p = malloc(%zu)\n", ut->r, ut->s);
else
printf("%p = realloc(%p, %zu)\n", ut->r, ut->p, ut->s);
}
void
ktruser(int len, void *p)
{
unsigned char *cp;
if (len >= 8 && bcmp(p, "RTLD", 4) == 0) {
ktruser_rtld(len, p);
return;
}
if (len == sizeof(struct utrace_malloc)) {
ktruser_malloc(p);
return;
}
printf("%d ", len);
cp = p;
while (len--)
if (decimal)
printf(" %d", *cp++);
else
printf(" %02x", *cp++);
printf("\n");
}
void
ktrcaprights(cap_rights_t *rightsp)
{
printf("cap_rights_t ");
capname(rightsp);
printf("\n");
}
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;
memset(&sa_in, 0, sizeof(sa_in));
memcpy(&sa_in, sa, sa->sa_len);
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;
memset(&sa_in6, 0, sizeof(sa_in6));
memcpy(&sa_in6, sa, sa->sa_len);
check_sockaddr_len(in6);
getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6),
addr, sizeof(addr), NULL, 0, NI_NUMERICHOST);
printf("[%s]:%u", addr, htons(sa_in6.sin6_port));
break;
}
case AF_UNIX: {
struct sockaddr_un sa_un;
memset(&sa_un, 0, sizeof(sa_un));
memcpy(&sa_un, sa, sa->sa_len);
printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path);
break;
}
default:
printf("unknown address family");
}
printf(" }\n");
}
void
ktrstat(struct stat *statp)
{
char mode[12], timestr[PATH_MAX + 4];
struct passwd *pwd;
struct group *grp;
struct tm *tm;
/*
* note: ktrstruct() has already verified that statp points to a
* buffer exactly sizeof(struct stat) bytes long.
*/
printf("struct stat {");
printf("dev=%ju, ino=%ju, ",
(uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino);
if (resolv == 0)
printf("mode=0%jo, ", (uintmax_t)statp->st_mode);
else {
strmode(statp->st_mode, mode);
printf("mode=%s, ", mode);
}
printf("nlink=%ju, ", (uintmax_t)statp->st_nlink);
if (resolv == 0) {
pwd = NULL;
} else {
#ifdef HAVE_LIBCAPSICUM
if (cappwd != NULL)
pwd = cap_getpwuid(cappwd, statp->st_uid);
else
#endif
pwd = getpwuid(statp->st_uid);
}
if (pwd == NULL)
printf("uid=%ju, ", (uintmax_t)statp->st_uid);
else
printf("uid=\"%s\", ", pwd->pw_name);
if (resolv == 0) {
grp = NULL;
} else {
#ifdef HAVE_LIBCAPSICUM
if (capgrp != NULL)
grp = cap_getgrgid(capgrp, statp->st_gid);
else
#endif
grp = getgrgid(statp->st_gid);
}
if (grp == NULL)
printf("gid=%ju, ", (uintmax_t)statp->st_gid);
else
printf("gid=\"%s\", ", grp->gr_name);
printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
printf("atime=");
if (resolv == 0)
printf("%jd", (intmax_t)statp->st_atim.tv_sec);
else {
tm = localtime(&statp->st_atim.tv_sec);
strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
printf("\"%s\"", timestr);
}
if (statp->st_atim.tv_nsec != 0)
printf(".%09ld, ", statp->st_atim.tv_nsec);
else
printf(", ");
printf("stime=");
if (resolv == 0)
printf("%jd", (intmax_t)statp->st_mtim.tv_sec);
else {
tm = localtime(&statp->st_mtim.tv_sec);
strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
printf("\"%s\"", timestr);
}
if (statp->st_mtim.tv_nsec != 0)
printf(".%09ld, ", statp->st_mtim.tv_nsec);
else
printf(", ");
printf("ctime=");
if (resolv == 0)
printf("%jd", (intmax_t)statp->st_ctim.tv_sec);
else {
tm = localtime(&statp->st_ctim.tv_sec);
strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
printf("\"%s\"", timestr);
}
if (statp->st_ctim.tv_nsec != 0)
printf(".%09ld, ", statp->st_ctim.tv_nsec);
else
printf(", ");
printf("birthtime=");
if (resolv == 0)
printf("%jd", (intmax_t)statp->st_birthtim.tv_sec);
else {
tm = localtime(&statp->st_birthtim.tv_sec);
strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
printf("\"%s\"", timestr);
}
if (statp->st_birthtim.tv_nsec != 0)
printf(".%09ld, ", statp->st_birthtim.tv_nsec);
else
printf(", ");
printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
(uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
(intmax_t)statp->st_blocks, statp->st_flags);
printf(" }\n");
}
void
ktrstruct(char *buf, size_t buflen)
{
char *name, *data;
size_t namelen, datalen;
int i;
cap_rights_t rights;
struct stat sb;
struct sockaddr_storage ss;
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 < (int)namelen; ++i)
if (!isalpha(name[i]))
goto invalid;
if (strcmp(name, "caprights") == 0) {
if (datalen != sizeof(cap_rights_t))
goto invalid;
memcpy(&rights, data, datalen);
ktrcaprights(&rights);
} else if (strcmp(name, "stat") == 0) {
if (datalen != sizeof(struct stat))
goto invalid;
memcpy(&sb, data, datalen);
ktrstat(&sb);
} else if (strcmp(name, "sockaddr") == 0) {
if (datalen > sizeof(ss))
goto invalid;
memcpy(&ss, data, datalen);
if (datalen != ss.ss_len)
goto invalid;
ktrsockaddr((struct sockaddr *)&ss);
} else {
printf("unknown structure\n");
}
return;
invalid:
printf("invalid record\n");
}
void
ktrcapfail(struct ktr_cap_fail *ktr)
{
switch (ktr->cap_type) {
case CAPFAIL_NOTCAPABLE:
/* operation on fd with insufficient capabilities */
printf("operation requires ");
capname(&ktr->cap_needed);
printf(", descriptor holds ");
capname(&ktr->cap_held);
break;
case CAPFAIL_INCREASE:
/* requested more capabilities than fd already has */
printf("attempt to increase capabilities from ");
capname(&ktr->cap_held);
printf(" to ");
capname(&ktr->cap_needed);
break;
case CAPFAIL_SYSCALL:
/* called restricted syscall */
printf("disallowed system call");
break;
case CAPFAIL_LOOKUP:
/* used ".." in strict-relative mode */
printf("restricted VFS lookup");
break;
default:
printf("unknown capability failure: ");
capname(&ktr->cap_needed);
printf(" ");
capname(&ktr->cap_held);
break;
}
printf("\n");
}
void
ktrfault(struct ktr_fault *ktr)
{
printf("0x%jx ", ktr->vaddr);
vmprotname(ktr->type);
printf("\n");
}
void
ktrfaultend(struct ktr_faultend *ktr)
{
vmresultname(ktr->result);
printf("\n");
}
#if defined(__amd64__) || defined(__i386__)
void
linux_ktrsyscall(struct ktr_syscall *ktr)
{
int narg = ktr->ktr_narg;
register_t *ip;
if (ktr->ktr_code >= nlinux_syscalls || ktr->ktr_code < 0)
printf("[%d]", ktr->ktr_code);
else {
printf("%s", linux_syscallnames[ktr->ktr_code]);
if (syscallno)
printf("[%d]", ktr->ktr_code);
}
ip = &ktr->ktr_args[0];
if (narg) {
char c = '(';
while (narg > 0)
print_number(ip, narg, c);
putchar(')');
}
putchar('\n');
}
void
linux_ktrsysret(struct ktr_sysret *ktr)
{
register_t ret = ktr->ktr_retval;
int error = ktr->ktr_error;
int code = ktr->ktr_code;
if (code >= nlinux_syscalls || code < 0)
printf("[%d] ", code);
else {
printf("%s", linux_syscallnames[code]);
if (syscallno)
printf("[%d]", code);
printf(" ");
}
if (error == 0) {
if (fancy) {
printf("%ld", (long)ret);
if (ret < 0 || ret > 9)
printf("/%#lx", (unsigned long)ret);
} else {
if (decimal)
printf("%ld", (long)ret);
else
printf("%#lx", (unsigned long)ret);
}
} else if (error == ERESTART)
printf("RESTART");
else if (error == EJUSTRETURN)
printf("JUSTRETURN");
else {
if (ktr->ktr_error <= ELAST + 1)
error = abs(bsd_to_linux_errno[ktr->ktr_error]);
else
error = 999;
printf("-1 errno %d", error);
if (fancy)
printf(" %s", strerror(ktr->ktr_error));
}
putchar('\n');
}
#endif
void
usage(void)
{
fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] "
"[-m maxdata] [-p pid] [-t trstr]\n");
exit(1);
}