reactos/posix/lib/psxdll/unistd/access.c

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/* $Id: access.c,v 1.3 2002/10/29 04:45:46 rex Exp $
*/
/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS POSIX+ Subsystem
* FILE: subsys/psx/lib/psxdll/unistd/access.c
* PURPOSE: Determine accessibility of a file
* PROGRAMMER: KJK::Hyperion <noog@libero.it>
* UPDATE HISTORY:
* 13/02/2002: Created
*/
#include <ddk/ntddk.h>
#include <unistd.h>
#include <fcntl.h>
#include <psx/errno.h>
int access(const char *path, int amode)
{
OBJECT_ATTRIBUTES oaFileAttribs;
IO_STATUS_BLOCK isbStatus;
ACCESS_MASK amDesiredAccess = 0;
NTSTATUS nErrCode;
HANDLE hFile;
if(amode != F_OK)
{
if(amode && R_OK) amDesiredAccess |= GENERIC_READ;
if(amode && W_OK) amDesiredAccess |= GENERIC_WRITE;
if(amode && X_OK) amDesiredAccess |= GENERIC_EXECUTE;
}
nErrCode = NtCreateFile
(
&hFile,
amDesiredAccess,
&oaFileAttribs,
&isbStatus,
0,
0,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
FILE_OPEN,
0,
0,
0
);
if(NT_SUCCESS(nErrCode))
{
NtClose(hFile);
return (0);
}
errno = __status_to_errno(nErrCode);
return (-1);
}
/* EOF */