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|
/* $NetBSD: dump.c,v 1.17 2003/11/19 05:20:50 gson 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\n\
The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)kdump.c 8.4 (Berkeley) 4/28/95";
#endif
__RCSID("$NetBSD: dump.c,v 1.17 2003/11/19 05:20:50 gson Exp $");
#endif /* not lint */
#include <sys/param.h>
#define _KERNEL
#include <sys/errno.h>
#undef _KERNEL
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/ktrace.h>
#include <sys/ioctl.h>
#include <sys/ptrace.h>
#define _KERNEL
#include <sys/errno.h>
#undef _KERNEL
#include <err.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <vis.h>
#include "ktrace.h"
#include "misc.h"
#include "setemul.h"
int timestamp, decimal, fancy = 1, tail, maxdata;
#define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
#include <sys/syscall.h>
static const char * const ptrace_ops[] = {
"PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U",
"PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE",
"PT_KILL", "PT_ATTACH", "PT_DETACH",
};
void dumprecord __P((struct ktr_header *, int, int *, void **, FILE *));
void dumpheader __P((struct ktr_header *, char *, int, int *));
int fread_tail __P((char *, int, int, FILE *));
void ioctldecode __P((u_long));
int ktrsyscall __P((struct ktr_syscall *, int, char *, int, int *));
void ktrsysret __P((struct ktr_sysret *, char *, int, int *));
void ktrnamei __P((char *, int, char *, int, int *));
void ktremul __P((struct ktr_header *, char *, int, char *, int, int *));
void ktrgenio __P((struct ktr_genio *, int, char *, int, int *));
void ktrpsig __P((struct ktr_psig *));
void ktrcsw __P((struct ktr_csw *));
#define KTR_BUFSZ 512
#define BLEFT (bufsz - (bp - buff))
void
dumprecord(ktr, trpoints, sizep, mp, fp)
register struct ktr_header *ktr;
int trpoints;
int *sizep;
void **mp;
FILE *fp;
{
static void *mcopy = NULL;
static int linelen = 0, iolinelen = 0;
char buff[KTR_BUFSZ], iobuff[KTR_BUFSZ], *bp;
int ktrlen, *lenp;
void *m;
if (ktr->ktr_type == KTR_GENIO || ktr->ktr_type == KTR_EMUL) {
bp = iobuff;
lenp = &iolinelen;
} else {
bp = buff;
lenp = &linelen;
}
if (!mcopy && (trpoints & (1<<ktr->ktr_type)))
dumpheader(ktr, bp, KTR_BUFSZ, lenp);
if ((ktrlen = ktr->ktr_len) < 0)
errx(1, "bogus length 0x%x", ktrlen);
m = *mp;
if (ktrlen >= *sizep) {
while(ktrlen > *sizep) *sizep *= 2;
*mp = m = (void *)realloc(m, *sizep);
if (m == NULL)
errx(1, "realloc: %s", strerror(ENOMEM));
}
if (ktrlen && fread_tail(m, ktrlen, 1, fp) == 0)
errx(1, "data too short");
if ((trpoints & (1<<ktr->ktr_type)) == 0)
return;
/* update context to match currently processed record */
ectx_sanify(ktr->ktr_pid);
switch (ktr->ktr_type)
{
case KTR_SYSCALL:
if (ktrsyscall((struct ktr_syscall *)m, 0, bp, KTR_BUFSZ,
lenp) == 0) {
mcopy = (void *)malloc(ktrlen + 1);
bcopy(m, mcopy, ktrlen);
return;
}
break;
case KTR_SYSRET:
ktrsysret((struct ktr_sysret *)m, bp, KTR_BUFSZ, lenp);
if (*iobuff || iolinelen) {
fputs(iobuff, stdout);
*iobuff = '\0';
iolinelen = 0;
}
break;
case KTR_NAMEI:
ktrnamei(m, ktrlen, bp, sizeof(buff), lenp);
if (mcopy) {
(void) ktrsyscall((struct ktr_syscall *)mcopy, 1, bp,
KTR_BUFSZ, lenp);
free(mcopy);
mcopy = NULL;
}
break;
case KTR_GENIO:
ktrgenio((struct ktr_genio *)m, ktrlen, bp, KTR_BUFSZ, lenp);
break;
case KTR_PSIG:
ktrpsig((struct ktr_psig *)m);
break;
case KTR_CSW:
ktrcsw((struct ktr_csw *)m);
break;
case KTR_EMUL:
ktremul(ktr, m, ktrlen, bp, sizeof(buff), lenp);
break;
}
if (mcopy) {
free(mcopy);
mcopy = NULL;
}
}
void
dumpfile(file, fd, trpoints)
const char *file;
int fd;
int trpoints;
{
struct ktr_header ktr_header;
void *m;
FILE *fp;
int size;
m = (void *)malloc(size = 1024);
if (m == NULL)
errx(1, "malloc: %s", strerror(ENOMEM));
if (!file || !*file) {
if (!(fp = fdopen(fd, "r")))
err(1, "fdopen(%d)", fd);
} else if (!strcmp(file, "-"))
fp = stdin;
else if (!(fp = fopen(file, "r")))
err(1, "%s", file);
while (fread_tail((char *)&ktr_header,sizeof(struct ktr_header),1,fp)) {
dumprecord(&ktr_header, trpoints, &size, &m, fp);
if (tail)
(void)fflush(stdout);
}
}
int
fread_tail(buf, size, num, fp)
char *buf;
int num, size;
FILE *fp;
{
int i;
while ((i = fread(buf, size, num, fp)) == 0 && tail) {
(void)sleep(1);
clearerr(fp);
}
return (i);
}
void
dumpheader(kth, buff, buffsz, lenp)
struct ktr_header *kth;
char *buff;
int buffsz, *lenp;
{
static struct timeval prevtime;
char *bp = buff + *lenp;
struct timeval temp;
if (kth->ktr_type == KTR_SYSRET || kth->ktr_type == KTR_GENIO)
return;
*lenp = 0;
(void)snprintf(bp, buffsz - *lenp, "%6d %-8.*s ",
kth->ktr_pid, MAXCOMLEN, kth->ktr_comm);
*lenp += strlen(bp);
bp = buff + *lenp;
if (timestamp) {
if (timestamp == 2) {
timersub(&kth->ktr_time, &prevtime, &temp);
prevtime = kth->ktr_time;
} else
temp = kth->ktr_time;
(void)snprintf(bp, buffsz - *lenp, "%ld.%06ld ",
(long int)temp.tv_sec,
(long int)temp.tv_usec);
*lenp += strlen(bp);
}
}
void
ioctldecode(cmd)
u_long cmd;
{
char dirbuf[4], *dir = dirbuf;
if (cmd & IOC_OUT)
*dir++ = 'W';
if (cmd & IOC_IN)
*dir++ = 'R';
*dir = '\0';
printf(decimal ? ",_IO%s('%c',%ld" : ",_IO%s('%c',%#lx",
dirbuf, (int) ((cmd >> 8) & 0xff), cmd & 0xff);
if ((cmd & IOC_VOID) == 0)
printf(decimal ? ",%ld)" : ",%#lx)", (cmd >> 16) & 0xff);
else
printf(")");
}
int
ktrsyscall(ktr, nohdr, buff, bufsz, lenp)
register struct ktr_syscall *ktr;
int nohdr, bufsz, *lenp;
char *buff;
{
register int argsize = ktr->ktr_argsize;
register register_t *ap;
char *bp = buff;
int eol = 1;
if (*lenp < bufsz) {
bp += *lenp;
bzero(bp, BLEFT);
}
if (!nohdr) {
if (ktr->ktr_code >= cur_emul->nsysnames || ktr->ktr_code < 0)
(void)snprintf(bp, BLEFT, "[%d]", ktr->ktr_code);
else
(void)snprintf(bp, BLEFT,
"%s", cur_emul->sysnames[ktr->ktr_code]);
bp += strlen(bp);
}
ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall));
if (argsize) {
char *s = "(";
if (fancy && !nohdr) {
switch (ktr->ktr_code) {
/*
* All these have a path as the first param.
* The order is same as syscalls.master.
*/
case SYS_open:
case SYS_link:
case SYS_unlink:
case SYS_chdir:
case SYS_mknod:
case SYS_chmod:
case SYS_chown:
case SYS_unmount:
case SYS_access:
case SYS_chflags:
case SYS_acct:
case SYS_revoke:
case SYS_symlink:
case SYS_readlink:
case SYS_execve:
case SYS_chroot:
case SYS_rename:
case SYS_mkfifo:
case SYS_mkdir:
case SYS_rmdir:
case SYS_utimes:
case SYS_quotactl:
case SYS_statfs:
case SYS_getfh:
case SYS_pathconf:
case SYS_truncate:
case SYS_undelete:
case SYS___posix_rename:
case SYS_lchmod:
case SYS_lchown:
case SYS_lutimes:
case SYS___stat13:
case SYS___lstat13:
case SYS___posix_chown:
case SYS___posix_lchown:
case SYS_lchflags:
if (BLEFT > 1)
*bp++ = '(';
eol = 0;
break;
case SYS_compat_16___sigaction14 :
(void)snprintf(bp, BLEFT, "(%s",
signals[(int)*ap].name);
s = ", ";
argsize -= sizeof(register_t);
ap++;
break;
case SYS_ioctl :
if (decimal)
(void)snprintf(bp, BLEFT, "(%ld",
(long)*ap);
else
(void)snprintf(bp, BLEFT, "(%#lx",
(long)*ap);
bp += strlen(bp);
ap++;
argsize -= sizeof(register_t);
if ((s = ioctlname(*ap)) != NULL)
(void)snprintf(bp, BLEFT, ", %s", s);
else
ioctldecode(*ap);
s = ", ";
ap++;
argsize -= sizeof(register_t);
break;
case SYS_ptrace :
if (*ap >= 0 && *ap <=
sizeof(ptrace_ops) / sizeof(ptrace_ops[0]))
(void)snprintf(bp, BLEFT, "(%s",
ptrace_ops[*ap]);
else
(void)snprintf(bp, BLEFT, "(%ld",
(long)*ap);
s = ", ";
ap++;
argsize -= sizeof(register_t);
break;
default :
break;
}
bp += strlen(bp);
}
if (eol) {
while (argsize) {
if (!nohdr || strcmp(s, "(")) {
if (decimal)
(void)snprintf(bp, BLEFT,
"%s%ld", s,
(long)*ap);
else
(void)snprintf(bp, BLEFT,
"%s%#lx", s,
(long)*ap);
bp += strlen(bp);
}
s = ", ";
ap++;
argsize -= sizeof(register_t);
}
if (BLEFT > 1)
*bp++ = ')';
}
}
*bp = '\0';
*lenp = bp - buff;
return eol;
}
void
ktrsysret(ktr, buff, buffsz, lenp)
struct ktr_sysret *ktr;
int buffsz, *lenp;
char *buff;
{
register register_t ret = ktr->ktr_retval;
register int error = ktr->ktr_error;
while (*lenp < 50)
buff[(*lenp)++] = ' ';
if (error == EJUSTRETURN)
strcpy(buff + *lenp, " JUSTRETURN");
else if (error == ERESTART)
strcpy(buff + *lenp, " RESTART");
else if (error) {
sprintf(buff + *lenp, " Err#%d", error);
if (error < MAXERRNOS && error >= -2)
sprintf(buff + strlen(buff), " %s",errnos[error].name);
} else
sprintf(buff + *lenp, " = %ld", (long)ret);
strcat(buff + *lenp, "\n");
*lenp = 0;
fputs(buff, stdout);
*buff = '\0';
}
void
ktrnamei(cp, len, buff, buffsz, lenp)
int buffsz, *lenp;
char *cp, *buff;
{
snprintf(buff + *lenp, buffsz - *lenp, "\"%.*s\"", len, cp);
*lenp += strlen(buff + *lenp);
}
void
ktremul(ktr_header, cp, len, buff, buffsz, lenp)
struct ktr_header *ktr_header;
int buffsz, *lenp;
char *cp, *buff;
{
bzero(buff + *lenp, buffsz - *lenp);
cp[len] = '\0';
snprintf(buff + *lenp, buffsz - *lenp, "emul(%s)\n", cp);
*lenp += strlen(buff + *lenp);
setemul(cp, ktr_header->ktr_pid, 1);
}
void
ktrgenio(ktr, len, buff, bufsz, lenp)
struct ktr_genio *ktr;
int len;
char *buff;
int bufsz, *lenp;
{
static int screenwidth = 0;
register int datalen = len - sizeof (struct ktr_genio);
register char *dp = (char *)ktr + sizeof (struct ktr_genio);
register int col = 0;
register int width;
char visbuf[5], *bp = buff;
if (*lenp < bufsz) {
bp += *lenp;
bzero(buff, BLEFT);
} else
*lenp = 0;
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;
strcpy(bp, " \"");
col = *lenp;
col += 8;
bp += 8;
for (; datalen > 0; datalen--, dp++) {
(void) vis(visbuf, *dp, VIS_NL|VIS_TAB|VIS_CSTYLE, *(dp+1));
width = strlen(visbuf);
visbuf[4] = '\0';
if (col + width + 2 >= screenwidth)
break;
col += width;
strncpy(bp, visbuf, width);
bp += width;
if (col + 2 >= screenwidth)
break;
}
strcpy(bp, "\"\n");
*lenp = col + 2;
}
void
ktrpsig(psig)
struct ktr_psig *psig;
{
(void)printf("SIG%s ", sys_signame[psig->signo]);
if (psig->action == SIG_DFL)
(void)printf("SIG_DFL\n");
else {
(void)printf("caught handler=0x%lx mask=0x%lx code=0x%x\n",
(u_long)psig->action, (unsigned long)psig->mask.__bits[0],
psig->code);
}
}
void
ktrcsw(cs)
struct ktr_csw *cs;
{
(void)printf("%s %s\n", cs->out ? "stop" : "resume",
cs->user ? "user" : "kernel");
}
|