v4.0/src/CMD/RESTORE/RTT1.C

   1
   2 /*----------------------------
   3 /* SOURCE FILE NAME:  RTT1.C
   4 /*----------------------------
   5 /* \ f \e0 */
   6
   7 #include "rt.h"
   8 #include "rt1.h"
   9 #include "rt2.h"
  10 #include "restpars.h"                                                 /*;AN000;4*/
  11 #include "dos.h"                                                      /*;AN000;2*/
  12 #include "comsub.h"             /* common subroutine def'n */
  13 #include "doscalls.h"
  14 #include "error.h"
  15
  16 extern BYTE destddir[MAXPATH+3];
  17 extern BYTE srcddir[MAXPATH+3];
  18 extern BYTE rtswitch;
  19 extern BYTE control_flag;
  20 extern BYTE control_flag2;
  21 extern BYTE filename[12];
  22 extern unsigned control_file_handle;                                 /* !wrw */
  23 extern BYTE append_indicator;                                         /*;AN000;2*/
  24 extern WORD original_append_func;                                     /*;AN000;2*/
  25
  26 /**\f***********************************************/
  27 /*
  28 /* SUBROUTINE NAME:     check_appendX
  29 /*
  30 /* FUNCTION:
  31 /*      Check APPEND /X status.  If it is not active,
  32 /*      do nothing. If it is active, then turn it off
  33 /*      and set flag indicating that we must reset it later.
  34 /*
  35 /***************************************************/
  36 void check_appendX()                            /*;AN000;2*/
  37 {                                               /*;AN000;2*/
  38         union REGS gregs;                       /*;AN000;2 Register set */
  39
  40         gregs.x.ax = INSTALL_CHECK;             /*;AN000;2 Get installed state*/
  41         int86(0x2f,&gregs,&gregs);              /*;AN000;2*/
  42
  43                 /*****************************************************/
  44                 /*  1) See if append is active
  45                 /*  2) If so, figure out if PCDOS or PCNET version
  46                 /*****************************************************/
  47         if (gregs.h.al == 0)                    /*;AN000;2 Zero if not installed*/
  48           append_indicator = NOT_INSTALLED;     /*;AN000;2 */
  49          else                                   /*;AN000;2 See which APPEND it is*/
  50            {                                    /*;AN000;2*/
  51             gregs.x.ax = GET_APPEND_VER;        /*;AN000;2*/
  52             int86(0x2f,&gregs,&gregs);          /*;AN000;2*/
  53
  54             if (gregs.h.al == (BYTE)-1)         /*;AN000;2 -1 if PCDOS version*/
  55              append_indicator = DOS_APPEND;     /*;AN000;2*/
  56             else                                /*;AN000;2*/
  57              append_indicator = NET_APPEND;     /*;AN000;2*/
  58            }                                    /*;AN000;2*/
  59
  60                 /*****************************************************/
  61                 /*  If it is the PCDOS append
  62                 /*    1) Get the current append functions (returned in BX)
  63                 /*    2) Reset append with /X support off
  64                 /*****************************************************/
  65         if (append_indicator == DOS_APPEND)     /*;AN000;2*/
  66          {                                      /*;AN000;2*/
  67             gregs.x.ax = GET_STATE;             /*;AN000;2 Get active APPEND functions*/
  68             int86(0x2f,&gregs,&gregs);          /*;AN000;2*/
  69             original_append_func = gregs.x.bx;  /*;AN000;2*/
  70
  71             gregs.x.ax = SET_STATE;             /*;AN000;2*/
  72             gregs.x.bx = gregs.x.bx & (!APPEND_X_BIT);  /*;AN000;2*/
  73             int86(0x2f,&gregs,&gregs);          /*;AN000;2*/
  74
  75          }                                      /*;AN000;2*/
  76
  77         return;                                 /*;AN000;2*/
  78 }                                               /*;AN000;2*/
  79 \1a