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06748b5f7c
freebsd-skq/usr.bin/kdump/kdump.c
attilio 06748b5f7c Use a safety belt for cases where corrupted narg can be passed to the 
ktrsyscall(). print_number() does decrement the number of arguments,
leading to infinite loops for negative values.

Reported by:	Patrick Lamaiziere <patpr at davenulle dot org>,
		Jonathan Pascal <jkpyvxmzsa at mailinator dot com>
Submitted by:	jh
PR:		bin/120055, kern/119564
MFC:		1 week
2009-11-07 21:46:34 +00:00

1372 lines
32 KiB
C
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/*-
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static 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/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/un.h>
#ifdef IPX
#include <sys/types.h>
#include <netipx/ipx.h>
#endif
#ifdef NETATALK
#include <netatalk/at.h>
#endif
#include <arpa/inet.h>
#include <netinet/in.h>
#include <ctype.h>
#include <dlfcn.h>
#include <err.h>
#include <grp.h>
#include <inttypes.h>
#include <locale.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <vis.h>
#include "ktrace.h"
#include "kdump_subr.h"
int fread_tail(void *, int, int);
void dumpheader(struct ktr_header *);
void ktrsyscall(struct ktr_syscall *);
void ktrsysret(struct ktr_sysret *);
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 ktruser(int, unsigned char *);
void ktrsockaddr(struct sockaddr *);
void ktrstat(struct stat *);
void ktrstruct(char *, size_t);
void usage(void);
void sockfamilyname(int);
const char *ioctlname(u_long);
int timestamp, decimal, fancy = 1, suppressdata, tail, threads, maxdata,
resolv = 0;
const char *tracefile = DEF_TRACEFILE;
struct ktr_header ktr_header;
#define TIME_FORMAT "%b %e %T %Y"
#define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
int
main(int argc, char *argv[])
{
int ch, ktrlen, size;
void *m;
int trpoints = ALL_POINTS;
int drop_logged;
pid_t pid = 0;
(void) setlocale(LC_CTYPE, "");
while ((ch = getopt(argc,argv,"f:dElm:np:HRrsTt:")) != -1)
switch((char)ch) {
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':
suppressdata = 1;
break;
case 'E':
timestamp = 3; /* elapsed timestamp */
break;
case 'H':
threads = 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;
default:
usage();
}
if (argc > optind)
usage();
m = (void *)malloc(size = 1025);
if (m == NULL)
errx(1, "%s", strerror(ENOMEM));
if (!freopen(tracefile, "r", stdin))
err(1, "%s", tracefile);
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) {
(void)printf("%6d %6d %-8.*s Events dropped.\n",
ktr_header.ktr_pid, ktr_header.ktr_tid >
0 ? ktr_header.ktr_tid : 0, MAXCOMLEN,
ktr_header.ktr_comm);
drop_logged = 1;
} else if (!drop_logged) {
(void)printf("%6d %-8.*s Events dropped.\n",
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)
dumpheader(&ktr_header);
if ((ktrlen = ktr_header.ktr_len) < 0)
errx(1, "bogus length 0x%x", ktrlen);
if (ktrlen > size) {
m = (void *)realloc(m, ktrlen+1);
if (m == NULL)
errx(1, "%s", strerror(ENOMEM));
size = ktrlen;
}
if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
errx(1, "data too short");
if (pid && ktr_header.ktr_pid != pid)
continue;
if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
continue;
drop_logged = 0;
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:
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:
ktrcsw((struct ktr_csw *)m);
break;
case KTR_USER:
ktruser(ktrlen, m);
break;
case KTR_STRUCT:
ktrstruct(m, ktrlen);
break;
default:
printf("\n");
break;
}
if (tail)
(void)fflush(stdout);
}
return 0;
}
int
fread_tail(void *buf, int size, int num)
{
int i;
while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
(void)sleep(1);
clearerr(stdin);
}
return (i);
}
void
dumpheader(struct ktr_header *kth)
{
static char unknown[64];
static struct timeval prevtime, 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;
default:
(void)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)
(void)printf("%6d %6d %-8.*s ", kth->ktr_pid, kth->ktr_tid >
0 ? kth->ktr_tid : 0, MAXCOMLEN, kth->ktr_comm);
else
(void)printf("%6d %-8.*s ", kth->ktr_pid, MAXCOMLEN,
kth->ktr_comm);
if (timestamp) {
if (timestamp == 3) {
if (prevtime.tv_sec == 0)
prevtime = kth->ktr_time;
timevalsub(&kth->ktr_time, &prevtime);
}
if (timestamp == 2) {
temp = kth->ktr_time;
timevalsub(&kth->ktr_time, &prevtime);
prevtime = temp;
}
(void)printf("%ld.%06ld ",
kth->ktr_time.tv_sec, kth->ktr_time.tv_usec);
}
(void)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)
{
int narg = ktr->ktr_narg;
register_t *ip;
if (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0)
(void)printf("[%d]", ktr->ktr_code);
else
(void)printf("%s", syscallnames[ktr->ktr_code]);
ip = &ktr->ktr_args[0];
if (narg) {
char c = '(';
if (fancy) {
#define print_number(i,n,c) do { \
if (decimal) \
(void)printf("%c%ld", c, (long)*i); \
else \
(void)printf("%c%#lx", c, (long)*i); \
i++; \
n--; \
c = ','; \
} while (0);
if (ktr->ktr_code == SYS_ioctl) {
const char *cp;
print_number(ip,narg,c);
if ((cp = ioctlname(*ip)) != NULL)
(void)printf(",%s", cp);
else {
if (decimal)
(void)printf(",%ld", (long)*ip);
else
(void)printf(",%#lx ", (long)*ip);
}
c = ',';
ip++;
narg--;
} else if (ktr->ktr_code == SYS_ptrace) {
(void)putchar('(');
ptraceopname ((int)*ip);
c = ',';
ip++;
narg--;
} else if (ktr->ktr_code == SYS_access ||
ktr->ktr_code == SYS_eaccess) {
print_number(ip,narg,c);
(void)putchar(',');
accessmodename ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_open) {
int flags;
int mode;
print_number(ip,narg,c);
flags = *ip;
mode = *++ip;
(void)putchar(',');
flagsandmodename (flags, mode, decimal);
ip++;
narg-=2;
} else if (ktr->ktr_code == SYS_wait4) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
wait4optname ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_chmod ||
ktr->ktr_code == SYS_fchmod ||
ktr->ktr_code == SYS_lchmod) {
print_number(ip,narg,c);
(void)putchar(',');
modename ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_mknod) {
print_number(ip,narg,c);
(void)putchar(',');
modename ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_getfsstat) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
getfsstatflagsname ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_mount) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
mountflagsname ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_unmount) {
print_number(ip,narg,c);
(void)putchar(',');
mountflagsname ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_recvmsg ||
ktr->ktr_code == SYS_sendmsg) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
sendrecvflagsname ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_recvfrom ||
ktr->ktr_code == SYS_sendto) {
print_number(ip,narg,c);
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
sendrecvflagsname ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_chflags ||
ktr->ktr_code == SYS_fchflags ||
ktr->ktr_code == SYS_lchflags) {
print_number(ip,narg,c);
(void)putchar(',');
modename((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_kill) {
print_number(ip,narg,c);
(void)putchar(',');
signame((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_reboot) {
(void)putchar('(');
rebootoptname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_umask) {
(void)putchar('(');
modename((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_msync) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
msyncflagsname((int)*ip);
ip++;
narg--;
#ifdef SYS_freebsd6_mmap
} else if (ktr->ktr_code == SYS_freebsd6_mmap) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
mmapprotname ((int)*ip);
(void)putchar(',');
ip++;
narg--;
mmapflagsname ((int)*ip);
ip++;
narg--;
#endif
} else if (ktr->ktr_code == SYS_mmap) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
mmapprotname ((int)*ip);
(void)putchar(',');
ip++;
narg--;
mmapflagsname ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_mprotect) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
mmapprotname ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_madvise) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
madvisebehavname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_setpriority) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
prioname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_fcntl) {
int cmd;
int arg;
print_number(ip,narg,c);
cmd = *ip;
arg = *++ip;
(void)putchar(',');
fcntlcmdname(cmd, arg, decimal);
ip++;
narg-=2;
} else if (ktr->ktr_code == SYS_socket) {
int sockdomain;
(void)putchar('(');
sockdomain=(int)*ip;
sockdomainname(sockdomain);
ip++;
narg--;
(void)putchar(',');
socktypename((int)*ip);
ip++;
narg--;
if (sockdomain == PF_INET ||
sockdomain == PF_INET6) {
(void)putchar(',');
sockipprotoname((int)*ip);
ip++;
narg--;
}
c = ',';
} else if (ktr->ktr_code == SYS_setsockopt ||
ktr->ktr_code == SYS_getsockopt) {
print_number(ip,narg,c);
(void)putchar(',');
sockoptlevelname((int)*ip, decimal);
if ((int)*ip == SOL_SOCKET) {
ip++;
narg--;
(void)putchar(',');
sockoptname((int)*ip);
}
ip++;
narg--;
#ifdef SYS_freebsd6_lseek
} else if (ktr->ktr_code == 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);
(void)putchar(',');
whencename ((int)*ip);
ip++;
narg--;
#endif
} else if (ktr->ktr_code == SYS_lseek) {
print_number(ip,narg,c);
/* Hidden 'pad' argument, not in lseek(2) */
print_number(ip,narg,c);
(void)putchar(',');
whencename ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_flock) {
print_number(ip,narg,c);
(void)putchar(',');
flockname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_mkfifo ||
ktr->ktr_code == SYS_mkdir) {
print_number(ip,narg,c);
(void)putchar(',');
modename((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_shutdown) {
print_number(ip,narg,c);
(void)putchar(',');
shutdownhowname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_socketpair) {
(void)putchar('(');
sockdomainname((int)*ip);
ip++;
narg--;
(void)putchar(',');
socktypename((int)*ip);
ip++;
narg--;
c = ',';
} else if (ktr->ktr_code == SYS_getrlimit ||
ktr->ktr_code == SYS_setrlimit) {
(void)putchar('(');
rlimitname((int)*ip);
ip++;
narg--;
c = ',';
} else if (ktr->ktr_code == SYS_quotactl) {
print_number(ip,narg,c);
(void)putchar(',');
quotactlname((int)*ip);
ip++;
narg--;
c = ',';
} else if (ktr->ktr_code == SYS_nfssvc) {
(void)putchar('(');
nfssvcname((int)*ip);
ip++;
narg--;
c = ',';
} else if (ktr->ktr_code == SYS_rtprio) {
(void)putchar('(');
rtprioname((int)*ip);
ip++;
narg--;
c = ',';
} else if (ktr->ktr_code == SYS___semctl) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
semctlname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_semget) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
semgetname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_msgctl) {
print_number(ip,narg,c);
(void)putchar(',');
shmctlname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_shmat) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
shmatname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_shmctl) {
print_number(ip,narg,c);
(void)putchar(',');
shmctlname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_minherit) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
minheritname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_rfork) {
(void)putchar('(');
rforkname((int)*ip);
ip++;
narg--;
c = ',';
} else if (ktr->ktr_code == SYS_lio_listio) {
(void)putchar('(');
lio_listioname((int)*ip);
ip++;
narg--;
c = ',';
} else if (ktr->ktr_code == SYS_mlockall) {
(void)putchar('(');
mlockallname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_sched_setscheduler) {
print_number(ip,narg,c);
(void)putchar(',');
schedpolicyname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_sched_get_priority_max ||
ktr->ktr_code == SYS_sched_get_priority_min) {
(void)putchar('(');
schedpolicyname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == 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);
(void)putchar(',');
sendfileflagsname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_kldsym) {
print_number(ip,narg,c);
(void)putchar(',');
kldsymcmdname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_sigprocmask) {
(void)putchar('(');
sigprocmaskhowname((int)*ip);
ip++;
narg--;
c = ',';
} else if (ktr->ktr_code == SYS___acl_get_file ||
ktr->ktr_code == SYS___acl_set_file ||
ktr->ktr_code == SYS___acl_get_fd ||
ktr->ktr_code == SYS___acl_set_fd ||
ktr->ktr_code == SYS___acl_delete_file ||
ktr->ktr_code == SYS___acl_delete_fd ||
ktr->ktr_code == SYS___acl_aclcheck_file ||
ktr->ktr_code == SYS___acl_aclcheck_fd ||
ktr->ktr_code == SYS___acl_get_link ||
ktr->ktr_code == SYS___acl_set_link ||
ktr->ktr_code == SYS___acl_delete_link ||
ktr->ktr_code == SYS___acl_aclcheck_link) {
print_number(ip,narg,c);
(void)putchar(',');
acltypename((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_sigaction) {
(void)putchar('(');
signame((int)*ip);
ip++;
narg--;
c = ',';
} else if (ktr->ktr_code == SYS_extattrctl) {
print_number(ip,narg,c);
(void)putchar(',');
extattrctlname((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_nmount) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
mountflagsname ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_thr_create) {
print_number(ip,narg,c);
print_number(ip,narg,c);
(void)putchar(',');
thrcreateflagsname ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_thr_kill) {
print_number(ip,narg,c);
(void)putchar(',');
signame ((int)*ip);
ip++;
narg--;
} else if (ktr->ktr_code == SYS_kldunloadf) {
print_number(ip,narg,c);
(void)putchar(',');
kldunloadfflagsname ((int)*ip);
ip++;
narg--;
}
}
while (narg > 0) {
print_number(ip,narg,c);
}
(void)putchar(')');
}
(void)putchar('\n');
}
void
ktrsysret(struct ktr_sysret *ktr)
{
register_t ret = ktr->ktr_retval;
int error = ktr->ktr_error;
int code = ktr->ktr_code;
if (code >= nsyscalls || code < 0)
(void)printf("[%d] ", code);
else
(void)printf("%s ", syscallnames[code]);
if (error == 0) {
if (fancy) {
(void)printf("%d", 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');
}
void
ktrnamei(char *cp, int len)
{
(void)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];
(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");
}
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;
if (screenwidth == 0) {
struct winsize ws;
if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
ws.ws_col > 8)
screenwidth = ws.ws_col;
else
screenwidth = 80;
}
printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
datalen == 1 ? "" : "s");
if (suppressdata)
return;
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)
(void)printf("SIG%s ", signames[psig->signo]);
else
(void)printf("SIG %d ", psig->signo);
if (psig->action == SIG_DFL)
(void)printf("SIG_DFL\n");
else {
(void)printf("caught handler=0x%lx mask=0x%x code=0x%x\n",
(u_long)psig->action, psig->mask.__bits[0], psig->code);
}
}
void
ktrcsw(struct ktr_csw *cs)
{
(void)printf("%s %s\n", cs->out ? "stop" : "resume",
cs->user ? "user" : "kernel");
}
#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, unsigned char *p)
{
struct utrace_rtld *ut = (struct utrace_rtld *)p;
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:
p += 4;
len -= 4;
printf("RTLD: %d ", len);
while (len--)
if (decimal)
printf(" %d", *p++);
else
printf(" %02x", *p++);
printf("\n");
}
}
struct utrace_malloc {
void *p;
size_t s;
void *r;
};
void
ktruser_malloc(int len, unsigned char *p)
{
struct utrace_malloc *ut = (struct utrace_malloc *)p;
if (ut->p == NULL) {
if (ut->s == 0 && ut->r == NULL)
printf("malloc_init()\n");
else
printf("%p = malloc(%zu)\n", ut->r, ut->s);
} else {
if (ut->s == 0)
printf("free(%p)\n", ut->p);
else
printf("%p = realloc(%p, %zu)\n", ut->r, ut->p, ut->s);
}
}
void
ktruser(int len, unsigned char *p)
{
if (len >= 8 && bcmp(p, "RTLD", 4) == 0) {
ktruser_rtld(len, p);
return;
}
if (len == sizeof(struct utrace_malloc)) {
ktruser_malloc(len, p);
return;
}
(void)printf("%d ", len);
while (len--)
if (decimal)
(void)printf(" %d", *p++);
else
(void)printf(" %02x", *p++);
(void)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;
sa_in = (struct sockaddr_in *)sa;
check_sockaddr_len(in);
inet_ntop(AF_INET, &sa_in->sin_addr, addr, sizeof addr);
printf("%s:%u", addr, ntohs(sa_in->sin_port));
break;
}
#ifdef NETATALK
case AF_APPLETALK: {
struct sockaddr_at *sa_at;
struct netrange *nr;
sa_at = (struct sockaddr_at *)sa;
check_sockaddr_len(at);
nr = &sa_at->sat_range.r_netrange;
printf("%d.%d, %d-%d, %d", ntohs(sa_at->sat_addr.s_net),
sa_at->sat_addr.s_node, ntohs(nr->nr_firstnet),
ntohs(nr->nr_lastnet), nr->nr_phase);
break;
}
#endif
case AF_INET6: {
struct sockaddr_in6 *sa_in6;
sa_in6 = (struct sockaddr_in6 *)sa;
check_sockaddr_len(in6);
inet_ntop(AF_INET6, &sa_in6->sin6_addr, addr, sizeof addr);
printf("[%s]:%u", addr, htons(sa_in6->sin6_port));
break;
}
#ifdef IPX
case AF_IPX: {
struct sockaddr_ipx *sa_ipx;
sa_ipx = (struct sockaddr_ipx *)sa;
check_sockaddr_len(ipx);
/* XXX wish we had ipx_ntop */
printf("%s", ipx_ntoa(sa_ipx->sipx_addr));
break;
}
#endif
case AF_UNIX: {
struct sockaddr_un *sa_un;
sa_un = (struct sockaddr_un *)sa;
check_sockaddr_len(un);
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 {");
strmode(statp->st_mode, mode);
printf("dev=%ju, ino=%ju, mode=%s, nlink=%ju, ",
(uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino, mode,
(uintmax_t)statp->st_nlink);
if (resolv == 0 || (pwd = getpwuid(statp->st_uid)) == NULL)
printf("uid=%ju, ", (uintmax_t)statp->st_uid);
else
printf("uid=\"%s\", ", pwd->pw_name);
if (resolv == 0 || (grp = getgrgid(statp->st_gid)) == 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("%ld", statp->st_atimespec.tv_sec);
else {
tm = localtime(&statp->st_atimespec.tv_sec);
(void)strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
printf("\"%s\"", timestr);
}
if (statp->st_atimespec.tv_nsec != 0)
printf(".%09ld, ", statp->st_atimespec.tv_nsec);
else
printf(", ");
printf("stime=");
if (resolv == 0)
printf("%ld", statp->st_mtimespec.tv_sec);
else {
tm = localtime(&statp->st_mtimespec.tv_sec);
(void)strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
printf("\"%s\"", timestr);
}
if (statp->st_mtimespec.tv_nsec != 0)
printf(".%09ld, ", statp->st_mtimespec.tv_nsec);
else
printf(", ");
printf("ctime=");
if (resolv == 0)
printf("%ld", statp->st_ctimespec.tv_sec);
else {
tm = localtime(&statp->st_ctimespec.tv_sec);
(void)strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
printf("\"%s\"", timestr);
}
if (statp->st_ctimespec.tv_nsec != 0)
printf(".%09ld, ", statp->st_ctimespec.tv_nsec);
else
printf(", ");
printf("birthtime=");
if (resolv == 0)
printf("%ld", statp->st_birthtimespec.tv_sec);
else {
tm = localtime(&statp->st_birthtimespec.tv_sec);
(void)strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
printf("\"%s\"", timestr);
}
if (statp->st_birthtimespec.tv_nsec != 0)
printf(".%09ld, ", statp->st_birthtimespec.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;
for (name = buf, namelen = 0;
namelen < buflen && name[namelen] != '\0';
++namelen)
/* nothing */;
if (namelen == buflen)
goto invalid;
if (name[namelen] != '\0')
goto invalid;
data = buf + namelen + 1;
datalen = buflen - namelen - 1;
if (datalen == 0)
goto invalid;
/* sanity check */
for (i = 0; i < namelen; ++i)
if (!isalpha((unsigned char)name[i]))
goto invalid;
if (strcmp(name, "stat") == 0) {
if (datalen != sizeof(struct stat))
goto invalid;
ktrstat((struct stat *)data);
} else if (strcmp(name, "sockaddr") == 0) {
if (datalen < sizeof(struct sockaddr) ||
datalen != ((struct sockaddr *)(data))->sa_len)
goto invalid;
ktrsockaddr((struct sockaddr *)data);
} else {
printf("unknown structure\n");
}
return;
invalid:
printf("invalid record\n");
}
void
usage(void)
{
fprintf(stderr, "usage: kdump [-dEnlHRrsT] [-f trfile] "
"[-m maxdata] [-p pid] [-t trstr]\n");
exit(1);
}
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