HDD_SetExtRecording.c

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#include                <stdlib.h>
#include                <string.h>
#include                "libFireBird.h"
 
//This function returns 0x0000 on success
//                      0xe00* for warnings
//                  and 0xf00* for errors
word HDD_SetExtRecording(bool ExtDisk)
{
  TRACEENTER();
 
  dword                *__nExtPartition;
  textPartitionInfo    *__extPartitionInfo;
  dword                *__extTsFolder;
  byte                 *__isAllPartitionInvalid;
  int                  *__selectedPartition;
  tDirEntry            *DirEntry;
  char                 *ExtDiskPart;
 
  void (*Appl_SetIsExternal)(bool) = NULL;
 
  //Resolve all firmware functions and variables
  __nExtPartition = (dword*)FIS_vnExtPartition();
  if(!__nExtPartition)
  {
    TRACEEXIT();
    return 0xf000;
  }
 
  Appl_SetIsExternal = (void*)FIS_fwAppl_SetIsExternal();
  if(!Appl_SetIsExternal)
  {
    TRACEEXIT();
    return 0xf001;
  }
 
  __extPartitionInfo = (textPartitionInfo*)FIS_vExtPartitionInfo();
  if(!__extPartitionInfo)
  {
    TRACEEXIT();
    return 0xf002;
  }
 
  __extTsFolder = (dword*)FIS_vExtTsFolder();
  if(!__extTsFolder)
  {
    TRACEEXIT();
    return 0xf003;
  }
 
  __isAllPartitionInvalid = (byte*)FIS_vIsAllPartitionInvalid();
  if(!__isAllPartitionInvalid)
  {
    TRACEEXIT();
    return 0xf004;
  }
 
  __selectedPartition = (int*)FIS_vSelectedPartition();
  if(!__selectedPartition)
  {
    TRACEEXIT();
    return 0xf005;
  }
 
  if(ExtDisk)
  {
    //Check if an external disk has been mounted
    if(*__nExtPartition == 0)
    {
      TRACEEXIT();
      return 0xe000;
    }
 
    //Check if there is at least one partition which can be used for recording
    if(*__isAllPartitionInvalid != 0)
    {
      TRACEEXIT();
      return 0xe001;
    }
 
    //Another check to make sure that there is a selectable partition
    if(__selectedPartition[1] < 0)
    {
      TRACEEXIT();
      return 0xe002;
    }
 
    //Get the first partition of that drive
    ExtDiskPart = __extPartitionInfo[__selectedPartition[1]].MountPath;
 
    //Build the DirEntry struct
    DirEntry = TAP_MemAlloc(sizeof(tDirEntry));
    if(!DirEntry)
    {
      TRACEEXIT();
      return 0xf006;
    }
 
    DirEntry->Magic = 0xbacaed31;
    DirEntry->Path = TAP_MemAlloc(strlen(ExtDiskPart) + 1);
    if(!DirEntry->Path)
    {
      TRACEEXIT();
      return 0xf007;
    }
 
    memset(DirEntry->Path, 0, strlen(ExtDiskPart) + 1);
    strcpy(DirEntry->Path, ExtDiskPart);
    DirEntry->unknown1 =  9;
    DirEntry->unknown2 = 16;
 
    //Let the extTsFolder point to our DirEnt structure
    *__extTsFolder = (dword)DirEntry;
 
    //Set the external disk usage flag
    Appl_SetIsExternal(TRUE);
  }
  else
  {
    Appl_SetIsExternal(FALSE);
  }
 
  TRACEEXIT();
  return 0x0000;
}