commands/mdb/ioctl.c

   1 /*
   2  * ioctl.c for mdb -- decode an IOCTL system call
   3  */
   4 #include "mdb.h"
   5 #ifdef SYSCALLS_SUPPORT
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <fcntl.h>
  10 #include <sys/stat.h>
  11 #include <minix/type.h>
  12 #include <minix/callnr.h>
  13 #include <minix/com.h>
  14 #include <sys/ioctl.h>
  15 #include <sgtty.h>
  16 #include "proto.h"
  17
  18 PRIVATE int get_request;
  19
  20 PRIVATE char *rnames[] = {
  21         "TIOCGETP",
  22         "TIOCSETP",
  23         "TIOCGETC",
  24         "TIOCSETC"
  25 };
  26
  27 #define GETPNAME        0
  28 #define SETPNAME        1
  29 #define GETCNAME        2
  30 #define SETCNAME        3
  31
  32 /*
  33  * decode ioctl call
  34  * send or receive = 'R' or 'S'
  35  */
  36 void decode_ioctl(sr, m)
  37 int sr;
  38 message *m;
  39 {
  40 int rq;
  41 int request, device;
  42 int high;
  43 long spek, flags;
  44 int ispeed, ospeed, speed, erase, kill;
  45 int t_intrc, t_quitc, t_startc, t_stopc, t_brk, t_eof;
  46
  47    device  = m->m2_i1;
  48    request = m->m2_i3;
  49    spek    = m->m2_l1;
  50    flags   = m->m2_l2;
  51
  52 #ifdef DEBUG
  53    if( debug )
  54    Printf("%c device=%d request=%c|%d m2_l1=%lx m2_l2=%lx\n",
  55         sr,device,
  56         (request >> 8) & BYTE,
  57         request & BYTE,
  58         spek,flags);
  59 #endif
  60
  61    if ( sr == 'R') request = get_request;
  62
  63    switch(request) {
  64      case TIOCGETP:
  65      case TIOCSETP:
  66         rq = (request == TIOCGETP) ? GETPNAME : SETPNAME;
  67         if (sr == 'S') {
  68                 get_request = request;
  69                 Printf( "Sending %s ",rnames[rq] );
  70                 if ( request == TIOCGETP ) break;
  71         }
  72
  73         if ( (sr == 'R') && (request == TIOCSETP) ) break;
  74
  75         erase = (spek >> 8) & BYTE;
  76         kill  = spek & BYTE;
  77         flags = flags & 0xFFFF;
  78         speed = (spek >> 16) & 0xFFFFL;
  79         ispeed = speed & BYTE;
  80         ospeed = (speed >> 8) & BYTE;
  81         Printf("%s erase=%d kill=%d speed=%d/%d flags=%lx ",
  82                 rnames[rq], erase, kill, ispeed, ospeed, flags);
  83         break;
  84
  85      case TIOCGETC:
  86      case TIOCSETC:
  87         rq = (request == TIOCGETC) ? GETCNAME : SETCNAME;
  88         if (sr == 'S') {
  89                 get_request = request;
  90                 Printf( "Sending %s ",rnames[rq] );
  91                 if ( request == TIOCGETC ) break;
  92         }
  93
  94         if ( (sr == 'R') && (request == TIOCSETC) ) break;
  95
  96         t_intrc  = (spek >> 24) & BYTE;
  97         t_quitc  = (spek >> 16) & BYTE;
  98         t_startc = (spek >>  8) & BYTE;
  99         t_stopc  = (spek >>  0) & BYTE;
 100         t_brk    = flags & BYTE;
 101         t_eof    = (flags >> 8 ) & BYTE;
 102         Printf("%s int %d quit %d start %d stop %d brk %d eof %d\n",
 103                 rnames[rq],
 104                 t_intrc, t_quitc, t_startc, t_stopc, t_brk, t_eof);
 105         break;
 106
 107      default:
 108
 109 #ifdef  __i86   /* 16 bit */
 110         if ( sr == 'S' ) {
 111                 Printf("Sending ");
 112                 get_request = request;
 113         }
 114         else
 115                 Printf("Receiving ");
 116
 117         Printf("Other IOCTL device=%d request=%c|%d\n",
 118                 device, (request >> 8) & BYTE, request & BYTE );
 119
 120         break;
 121 #endif
 122
 123 #ifdef  __i386        /* 32 bit encoding */
 124         if ( sr == 'S' ) {
 125                 Printf("Sending (%lx) ",   request);
 126                 get_request = request;
 127         }
 128         else
 129                 Printf("Receiving (%lx) ", request);
 130
 131         high = ( request & 0xFFFF0000 ) >> 16 ;
 132         request &= _IOCTYPE_MASK;
 133
 134         Printf("Other IOCTL device=%d request=%c|%d flags=%x size =%d\n",
 135                 device, (request >> 8) & BYTE, request & BYTE,
 136                 (high  &  ~_IOCPARM_MASK ),
 137                 (high  &   _IOCPARM_MASK )
 138                 );
 139         break;
 140 #endif
 141      }
 142      Printf("\n");
 143 }
 144
 145
 146 #endif /* SYSCALLS_SUPPORT */