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{
$Id: dos.inc,v 1.1.2.2 2002/05/01 14:09:49 carl Exp $
This file is part of the Free Pascal run time library.
Copyright (c) 2002 by Carl Eric Codere
Operating system specific calls for DOS unit (part of POSIX interface)
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
{$i qnx.inc}
{
The Diskfree and Disksize functions need a file on the specified drive, since this
is required for the statfs system call.
These filenames are set in drivestr[0..26], and have been preset to :
0 - '.' (default drive - hence current dir is ok.)
1 - '/floppy/.' (either direct or contains dir with volume label of mounted device)
2 - '/cdrom/.' (either direct or contains dir with volume label of mounted device)
3 - '/' (C: equivalent of dos is the root partition)
4..26 (can be set by you're own applications)
! Use AddDisk() to Add new drives !
They both return -1 when a failure occurs.
The drive names are OS specific
}
Const
FixDriveStr : array[0..3] of pchar=(
'.', { the current directory }
'/floppy/.', { manually mounted floppy }
'/cdrom/.', { manually mounted cdrom }
'/' { root partition }
);
Function DosVersion:Word;
Var
Buffer : Array[0..255] of Char;
Tmp2,
TmpStr : String[40];
TmpPos,
SubRel,
Rel : LongInt;
info : ^utsname;
Begin
new(info);
sys_uname(info^);
Move(info^.release,buffer[0],40);
TmpStr:=StrPas(Buffer);
SubRel:=0;
TmpPos:=Pos('.',TmpStr);
if TmpPos>0 then
begin
Tmp2:=Copy(TmpStr,TmpPos+1,40);
Delete(TmpStr,TmpPos,40);
end;
TmpPos:=Pos('.',Tmp2);
if TmpPos>0 then
Delete(Tmp2,TmpPos,40);
Val(TmpStr,Rel);
Val(Tmp2,SubRel);
DosVersion:=Rel+(SubRel shl 8);
dispose(info);
End;
Function DiskFree(Drive: Byte): int64;
var
info : statvfs_t;
Begin
DiskFree := -1;
if (Drive < 4) and (FixDriveStr[Drive]<>nil) then
begin
if sys_statvfs(FixDriveStr[Drive],info)=0 then
DiskFree := int64(info.f_frsize)*int64(info.f_bavail);
end
else
if (Drive>4) and (Drive<=MAX_DRIVES) and (drivestr[Drive]<>nil) then
begin
if sys_statvfs(DriveStr[Drive],info)=0 then
DiskFree := int64(info.f_frsize)*int64(info.f_bavail);
end
else
begin
exit;
end;
End;
Function DiskSize(Drive: Byte): int64;
var
info : statvfs_t;
Begin
DiskSize:= -1;
if (Drive < 4) and (FixDriveStr[Drive]<>nil) then
begin
if sys_statvfs(FixDriveStr[Drive],info)=0 then
DiskSize := int64(info.f_frsize)*int64(info.f_blocks);
end
else
if (Drive>4) and (Drive<=MAX_DRIVES) and (drivestr[Drive]<>nil) then
begin
if sys_statvfs(DriveStr[Drive],info)=0 then
DiskSize := int64(info.f_frsize)*int64(info.f_blocks);
end
else
begin
exit;
end;
End;
{ QNX stores its timezone information, in POSIX format }
{ in the /etc/TIMEZONE file. }
function GetTimezoneString: string;
var
s: string;
T: text;
begin
GetTimeZoneString:='';
{ first try 'TZ' }
s := GetEnv('TZ');
if s<>'' then
begin
GetTimeZoneString:=s;
exit;
end;
{ otherwise try to open the TIMEZONE file }
{$IFOPT I+}
{$DEFINE IOCHECK_ON}
{$ENDIF}
{$I-}
Assign(T, '/etc/TIMEZONE');
Reset(T);
If IOResult <> 0 then
exit;
{$IFDEF IOCHECK_ON}
{$I+}
{$ENDIF}
{$UNDEF IOCHECK_ON}
ReadLn(T,s);
Close(T);
GetTimeZoneString:=s;
end;
{ QNX does not use timezone files }
function GetTimezoneFile:string;
begin
GetTimezoneFile:='';
end;
{
$Log: dos.inc,v $
Revision 1.1.2.2 2002/05/01 14:09:49 carl
+ TZ is now taken from GetTimezoneSitrng instead of getenv
Revision 1.1.2.1 2001/12/20 02:55:00 carl
+ QNX versions (still untested)
}
|
