361 lines
8.0 KiB
C
361 lines
8.0 KiB
C
/*
|
|
* decode.c for mdb -- decodes a Minix system call
|
|
*/
|
|
#include "mdb.h"
|
|
#ifdef SYSCALLS_SUPPORT
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <sys/stat.h>
|
|
#define ptrace mdbtrace
|
|
#include <sys/ptrace.h>
|
|
#include <minix/type.h>
|
|
#include <minix/callnr.h>
|
|
#include "proto.h"
|
|
|
|
FORWARD _PROTOTYPE( void get_message, (message *m, unsigned bx) );
|
|
FORWARD _PROTOTYPE( void get_data, (char *s, unsigned bx, int cnt) );
|
|
|
|
PRIVATE message sent;
|
|
PRIVATE message recv;
|
|
PRIVATE unsigned saved_addr;
|
|
PRIVATE int last_call;
|
|
|
|
#define NOSYS 0
|
|
#define NOP 1
|
|
|
|
#define _M1 0x0100
|
|
#define _M2 0x0200
|
|
#define _M3 0x0400
|
|
#define _M4 0x0800
|
|
|
|
#define _M13 0x0500
|
|
|
|
#define M1_I1 (_M1|1)
|
|
#define M1_I2 (_M1|2)
|
|
#define M1_I3 (_M1|4)
|
|
#define M1_P1 (_M1|8)
|
|
#define M1_P2 (_M1|16)
|
|
#define M1_P3 (_M1|32)
|
|
|
|
#define M2_I1 (_M2|1)
|
|
#define M2_I2 (_M2|2)
|
|
#define M2_I3 (_M2|4)
|
|
#define M2_L1 (_M2|8)
|
|
#define M2_L2 (_M2|16)
|
|
#define M2_P1 (_M2|32)
|
|
|
|
#define M3_I1 (_M3|1)
|
|
#define M3_I2 (_M3|2)
|
|
#define M3_P1 (_M3|4)
|
|
#define M3_C1 (_M3|8)
|
|
|
|
#define M4_L1 (_M4|1)
|
|
#define M4_L2 (_M4|2)
|
|
#define M4_L3 (_M4|4)
|
|
#define M4_L4 (_M4|8)
|
|
#define M4_L5 (_M4|16)
|
|
|
|
#define M13_OPEN (_M13|1)
|
|
|
|
#define M1_I12 (M1_I1|M1_I2)
|
|
#define M1_NAME1 (M1_I1|M1_P1)
|
|
#define M1_NAME2 (M1_I2|M1_P2)
|
|
#define M1_2NAMES (M1_I1|M1_P1|M1_I2|M1_P2)
|
|
#define M1_SIGACTION (M1_I2|M1_P1|M1_P2|M1_P3)
|
|
|
|
#define M2_IOCTL (M2_I1|M2_I3|M2_L1|M2_L2)
|
|
#define M2_4P (M2_I1|M2_I2|M2_L1|M2_L2)
|
|
#define M2_SIGRETURN (M2_I2|M2_L1|M2_P1)
|
|
#define M2_SIGPROC (M2_I1|M2_L1)
|
|
#define M2_UTIME (M2_I1|M2_I2|M2_L1|M2_L2|M2_P1)
|
|
|
|
#define M3_LOAD (M3_I1|M3_C1)
|
|
|
|
struct decode_system {
|
|
int syscall;
|
|
unsigned int sflag;
|
|
unsigned int rflag;
|
|
char *name;
|
|
} decode[NCALLS] = {
|
|
0, NOSYS, NOP, NULL,
|
|
EXIT, M1_I1, NOP, "EXIT",
|
|
FORK, NOP, NOP, "FORK",
|
|
READ, M1_I12, NOP, "READ",
|
|
WRITE, M1_I12, NOP, "WRITE",
|
|
OPEN, M13_OPEN, NOP, "OPEN",
|
|
CLOSE, M1_I1, NOP, "CLOSE",
|
|
WAIT, NOP, M2_I1, "WAIT",
|
|
CREAT, M3_LOAD, NOP, "CREAT",
|
|
LINK, M1_2NAMES, NOP, "LINK",
|
|
UNLINK, M3_LOAD, NOP, "UNLINK",
|
|
WAITPID, M1_I1, M2_I1, "WAITPID",
|
|
CHDIR, M3_LOAD, NOP, "CHDIR",
|
|
TIME, NOP, M2_L1, "TIME",
|
|
MKNOD, M1_NAME1, NOP, "MKNOD",
|
|
CHMOD, M3_LOAD, NOP, "CHMOD",
|
|
CHOWN, M1_NAME1, NOP, "CHOWN",
|
|
BRK, M1_P1, M2_P1, "BRK",
|
|
STAT, M1_NAME1, NOP, "STAT",
|
|
LSEEK, M1_I1, NOP, "LSEEK",
|
|
GETPID, NOP, NOP, "GETPID",
|
|
MOUNT, M1_2NAMES, NOP, "MOUNT",
|
|
UMOUNT, M3_LOAD, NOP, "UMOUNT",
|
|
SETUID, M1_I1, NOP, "SETUID",
|
|
GETUID, NOP, NOP, "GETUID",
|
|
STIME, M2_L1, NOP, "STIME",
|
|
PTRACE, M2_4P, NOP, "PTRACE",
|
|
ALARM, M1_I1, NOP, "ALARM",
|
|
FSTAT, M1_I1, NOP, "FSTAT",
|
|
PAUSE, NOP, NOP, "PAUSE",
|
|
UTIME, M2_UTIME, NOP, "UTIME",
|
|
31, NOSYS, NOP, NULL,
|
|
32, NOSYS, NOP, NULL,
|
|
ACCESS, M3_LOAD, NOP, "ACCESS",
|
|
34, NOSYS, NOP, NULL,
|
|
35, NOSYS, NOP, NULL,
|
|
SYNC, NOP, NOP, "SYNC",
|
|
KILL, M1_I12, NOP, "KILL",
|
|
RENAME, M1_2NAMES, NOP, "RENAME",
|
|
MKDIR, M1_NAME1, NOP, "MKDIR",
|
|
RMDIR, M3_LOAD, NOP, "RMDIR",
|
|
DUP, NOP, NOP, "DUP",
|
|
PIPE, NOP, M1_I12, "PIPE",
|
|
TIMES, M4_L5, NOP, "TIMES",
|
|
44, NOSYS, NOP, NULL,
|
|
45, NOSYS, NOP, NULL,
|
|
SETGID, M1_I1, NOP, "SETGID",
|
|
GETGID, NOP, NOP, "GETGID",
|
|
SIGNAL, NOP, NOP, "SIGNAL",
|
|
49, NOSYS, NOP, NULL,
|
|
50, NOSYS, NOP, NULL,
|
|
51, NOSYS, NOP, NULL,
|
|
52, NOSYS, NOP, NULL,
|
|
53, NOSYS, NOP, NULL,
|
|
IOCTL, M2_IOCTL, M2_IOCTL, "IOCTL",
|
|
FCNTL, M1_I12, NOP, "FCNTL",
|
|
#if ENABLE_SYMLINK
|
|
RDLINK, M1_NAME1, NOP, "RDLINK",
|
|
SLINK, M1_NAME1, NOP, "SLINK",
|
|
LSTAT, M1_NAME1, NOP, "LSTAT",
|
|
#else
|
|
56, NOSYS, NOP, NULL,
|
|
57, NOSYS, NOP, NULL,
|
|
58, NOSYS, NOP, NULL,
|
|
#endif
|
|
EXEC, M1_NAME1, NOP, "EXEC",
|
|
UMASK, M1_I1, NOP, "UMASK",
|
|
CHROOT, M3_LOAD, NOP, "CHROOT",
|
|
SETSID, NOP, NOP, "SETSID",
|
|
GETPGRP, NOP, NOP, "GETPGRP",
|
|
KSIG, NOSYS, NOP, "KSIG",
|
|
UNPAUSE, NOSYS, NOP, "UNPAUSE",
|
|
66, NOSYS, NOP, NULL,
|
|
REVIVE, NOSYS, NOP, "REVIVE",
|
|
TASK_REPLY, NOSYS, NOP, "TASK_REPLY",
|
|
69, NOSYS, NOP, NULL,
|
|
70, NOSYS, NOP, NULL,
|
|
SIGACTION, M1_SIGACTION, NOP, "SIGACTION",
|
|
SIGSUSPEND, M2_L1, NOP, "SIGSUSPEND",
|
|
SIGPENDING, NOP, M2_L1, "SIGPENDING",
|
|
SIGPROCMASK, M2_SIGPROC, NOP, "SIGPROCMASK",
|
|
SIGRETURN, M2_SIGRETURN, NOP, "SIGRETURN",
|
|
REBOOT, M1_I1, NOP, "REBOOT"
|
|
};
|
|
|
|
PRIVATE void get_message(m,bx)
|
|
message *m;
|
|
unsigned bx;
|
|
{
|
|
unsigned addr;
|
|
int i;
|
|
long buffer[ MESS_SIZE/4 + 1 ];
|
|
|
|
addr = bx;
|
|
for (i = 0; i< sizeof(buffer)/4; i++)
|
|
buffer[i] = ptrace(T_GETDATA,curpid,
|
|
(long) (addr+i*4) ,0L);
|
|
|
|
memcpy(m,buffer,MESS_SIZE);
|
|
|
|
}
|
|
|
|
PRIVATE void get_data(s, bx, cnt)
|
|
char *s;
|
|
unsigned bx;
|
|
int cnt;
|
|
{
|
|
unsigned addr;
|
|
int i,nl;
|
|
long buffer[PATH_MAX/4 + 1];
|
|
|
|
addr = bx;
|
|
nl = (cnt / 4) + 1;
|
|
for (i = 0; i< nl; i++)
|
|
buffer[i] = ptrace(T_GETDATA, curpid, (long) (addr+i*4) ,0L);
|
|
|
|
memcpy(s, buffer, cnt);
|
|
}
|
|
|
|
|
|
PUBLIC void decode_result()
|
|
{
|
|
|
|
/* Update message */
|
|
get_message(&recv,saved_addr);
|
|
Printf("result=%d\n", recv.m_type);
|
|
|
|
if (last_call < 0 || last_call >NCALLS) {
|
|
Printf("Bad call in decode_result\n");
|
|
return;
|
|
}
|
|
|
|
switch (decode[last_call].rflag) {
|
|
case NOP:
|
|
return;
|
|
break;
|
|
case M1_I12:
|
|
Printf("m1_l1=%d m1_i2=%d ",recv.m1_i1,recv.m1_i2);
|
|
break;
|
|
case M2_IOCTL:
|
|
decode_ioctl('R',&recv);
|
|
break;
|
|
case M2_P1:
|
|
Printf("m2_p1=%lx ",(unsigned long)recv.m2_p1);
|
|
break;
|
|
case M2_L1:
|
|
Printf("m2_l1=%lx ",recv.m2_l1);
|
|
break;
|
|
case M2_I1:
|
|
Printf("m2_i1=%x ",recv.m2_i1);
|
|
break;
|
|
default:
|
|
Printf("rflag=%d ",decode[last_call].rflag);
|
|
break;
|
|
}
|
|
Printf("\n");
|
|
}
|
|
|
|
|
|
void decode_message(bx)
|
|
unsigned bx;
|
|
{
|
|
int t;
|
|
int slen;
|
|
unsigned int flag;
|
|
char path[PATH_MAX];
|
|
|
|
/* Save address of message */
|
|
saved_addr = bx;
|
|
get_message(&sent,bx);
|
|
|
|
t = sent.m_type;
|
|
|
|
if ( t <= 0 || t >= NCALLS ) {
|
|
Printf("Bad call - not in range\n");
|
|
last_call = 0;
|
|
return;
|
|
}
|
|
|
|
flag = decode[t].sflag;
|
|
|
|
if ( flag == NOSYS) {
|
|
Printf("Bad call - not in system\n");
|
|
last_call = 0;
|
|
return;
|
|
}
|
|
else
|
|
last_call = t;
|
|
|
|
Printf(" type %s (%d) ", decode[last_call].name, last_call);
|
|
|
|
switch (flag) {
|
|
case NOP:
|
|
break;
|
|
case M1_I1:
|
|
case M1_I12:
|
|
Printf("i1=%d ",sent.m1_i1);
|
|
if ( flag == M1_I1) break;
|
|
case M1_I2:
|
|
Printf("i2=%d ",sent.m1_i2);
|
|
break;
|
|
case M1_P1:
|
|
Printf("p1=%lx ",(unsigned long)sent.m1_p1);
|
|
break;
|
|
case M1_NAME1:
|
|
case M1_2NAMES:
|
|
slen = sent.m1_i1;
|
|
get_data(path, (unsigned long) sent.m1_p1, slen);
|
|
path[slen] = '\0';
|
|
Printf("s1=%s ",path);
|
|
if ( flag == M1_NAME1) break;
|
|
slen = sent.m1_i2;
|
|
get_data(path, (unsigned long) sent.m1_p2, slen);
|
|
path[slen] = '\0';
|
|
Printf("s2=%s ",path);
|
|
break;
|
|
case M2_UTIME:
|
|
if ( sent.m2_i1 == 0 )
|
|
slen = sent.m2_i2;
|
|
else
|
|
slen = sent.m2_i1;
|
|
get_data(path, (unsigned long) sent.m2_p1, slen);
|
|
path[slen] = '\0';
|
|
Printf("p1=%s ",path);
|
|
if ( sent.m2_i1 != 0 )
|
|
Printf("l1=%lx l2=%lx ",sent.m2_l1,sent.m2_l2);
|
|
break;
|
|
case M1_SIGACTION:
|
|
Printf("m1_i2=%d p1=%lx p2=%lx p3=%lx\n",
|
|
sent.m1_i2,
|
|
(unsigned long)sent.m1_p1,
|
|
(unsigned long)sent.m1_p2,
|
|
(unsigned long)sent.m1_p3);
|
|
break;
|
|
case M2_4P: Printf("m2_i1=%d m2_i2=%d m2_l1=%lx m2_l2=%lx ",
|
|
sent.m2_i1,sent.m2_i2,sent.m2_l1,sent.m2_l2);
|
|
break;
|
|
case M2_L1:
|
|
Printf("m2_l1=%ld ",sent.m2_l1);
|
|
break;
|
|
case M2_IOCTL:
|
|
decode_ioctl('S',&sent);
|
|
break;
|
|
case M2_SIGRETURN:
|
|
Printf("m2_i2=%d l1=%lx p1=%lx ",
|
|
sent.m2_i2,sent.m2_l1,
|
|
(unsigned long)sent.m1_p1);
|
|
break;
|
|
case M2_SIGPROC:
|
|
Printf("m2_i1=%d l1=%lx ", sent.m2_i1,sent.m2_l1);
|
|
break;
|
|
case M13_OPEN:
|
|
if (sent.m1_i2 & O_CREAT) {
|
|
slen = sent.m1_i1;
|
|
get_data(path, (unsigned long) sent.m1_p1, slen);
|
|
path[slen] = '\0';
|
|
Printf("s1=%s ",path);
|
|
break;
|
|
}
|
|
/* fall to M3_LOAD */
|
|
case M3_LOAD:
|
|
slen = sent.m3_i1;
|
|
if ( slen <= M3_STRING)
|
|
strncpy(path,sent.m3_ca1,M3_STRING);
|
|
else
|
|
get_data(path, (unsigned long) sent.m3_ca1, slen);
|
|
path[slen] = '\0';
|
|
Printf("m3_name=%s ",path);
|
|
break;
|
|
case M4_L5:
|
|
Printf("m4_l5=%ld ",sent.m4_l5);
|
|
break;
|
|
default: Printf("sflag=%d ",decode[last_call].sflag);
|
|
break;
|
|
}
|
|
Printf("\n");
|
|
}
|
|
|
|
#endif /* SYSCALLS_SUPPORT */
|