accssos2.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 85 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  OS/2 implementation of access().
*
****************************************************************************/


#include "variety.h"
#include "widechar.h"
#include <io.h>
#include <direct.h>
#define INCL_DOSERRORS
#include <wos2.h>
#include "seterrno.h"
#ifdef __WIDECHAR__
    #include <mbstring.h>
    #include <stdlib.h>
    #include "mbwcconv.h"
#endif


_WCRTLINK int __F_NAME(access,_waccess)( const CHAR_TYPE *path, int pmode )
{
    USHORT          attr;
#ifdef __WIDECHAR__
    char            mbPath[MB_CUR_MAX*_MAX_PATH]; /* single-byte char */
#endif

#if defined(__WARP__)
    FILESTATUS3     fs;
    APIRET          rc;

    #ifdef __WIDECHAR__
        __filename_from_wide( mbPath, path );
        rc = DosQueryPathInfo( (PSZ)mbPath, FIL_STANDARD, &fs, sizeof( fs ) );
    #else
        rc = DosQueryPathInfo( (PSZ)path, FIL_STANDARD, &fs, sizeof( fs ) );
    #endif
    attr = fs.attrFile;
#else
    USHORT          rc;

    #ifdef __WIDECHAR__
        __filename_from_wide( mbPath, path );
        rc = DosQFileMode( mbPath, &attr, 0 );
    #else
        rc = DosQFileMode( (PSZ)path, &attr, 0 );
    #endif
#endif

    if( rc ) {
        __set_errno_dos( rc );
        return( -1 );
    }
    if( ( pmode & ACCESS_WR ) && ( attr & _A_RDONLY ) ) {
        __set_errno_dos( ERROR_ACCESS_DENIED ); /* invalid access mode */
        return( -1 );
    }
    return( 0 );
}