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81 lines
1.7 KiB
PHP
81 lines
1.7 KiB
PHP
{
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$Id: sysutils.pp,v 1.59 2005/03/25 22:53:39 jonas Exp $
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This file is part of the Free Pascal run time library.
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Copyright (c) 1999-2000 by Florian Klaempfl
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member of the Free Pascal development team
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Sysutils unit for linux
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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{$IF DEFINED(FREEBSD) AND NOT DEFINED(FREEBSD4)}
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{$IFDEF FPC_USE_LIBC}
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function cuuidgen(p:PGUID;x:cint):cint; external clib name 'uuidgen';
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{$ELSE}
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function cuuidgen(p:pguid;x:cint):cint;
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begin
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result:=do_syscall(syscall_nr_uuidgen,tsysparam(p),tsysparam(x));
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end;
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{$ENDIF}
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Function SysCreateGUID(out GUID : TGUID) : Integer;
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begin
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result:=0;
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if cuuidgen(@guid,1)=-1 then
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GetRandomBytes(GUID,SizeOf(Guid));
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end;
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{$ELSE}
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Const
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RandomDevice = '/dev/urandom';
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Function GetURandomBytes(Var Buf; NBytes : Integer) : Boolean;
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Var
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fd,I : Integer;
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P : PByte;
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begin
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P:=@Buf;
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fd:=FileOpen(RandomDevice,fmOpenRead or fmShareDenyNone);
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Result:=(fd>=0);
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if Result then
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Try
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While (NBytes>0) do
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begin
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I:=FileRead(fd,P^,nbytes);
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If I>0 then
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begin
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Inc(P,I);
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Dec(NBytes,I);
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end;
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end;
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Finally
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FileClose(Fd);
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end;
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end;
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Function SysCreateGUID(out GUID : TGUID) : Integer;
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begin
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if not GetUrandomBytes(Guid,SizeOf(GUID)) then
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GetRandomBytes(GUID,SizeOf(Guid));
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Result:=0;
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end;
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{$ENDIF}
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