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wine/dlls/kernel32/volume.c
Alexandre Julliard d23815827d kernel32: Rely solely on the DosDevices symbolic links in QueryDosDevice. 
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
2017-05-03 11:50:02 +02:00

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/*
* Volume management functions
*
* Copyright 1993 Erik Bos
* Copyright 1996, 2004 Alexandre Julliard
* Copyright 1999 Petr Tomasek
* Copyright 2000 Andreas Mohr
* Copyright 2003 Eric Pouech
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "winternl.h"
#include "winioctl.h"
#include "ntddcdrm.h"
#define WINE_MOUNTMGR_EXTENSIONS
#include "ddk/mountmgr.h"
#include "kernel_private.h"
#include "wine/library.h"
#include "wine/unicode.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(volume);
#define BLOCK_SIZE 2048
#define SUPERBLOCK_SIZE BLOCK_SIZE
#define SYMBOLIC_LINK_QUERY 0x0001
#define CDFRAMES_PERSEC 75
#define CDFRAMES_PERMIN (CDFRAMES_PERSEC * 60)
#define FRAME_OF_ADDR(a) ((a)[1] * CDFRAMES_PERMIN + (a)[2] * CDFRAMES_PERSEC + (a)[3])
#define FRAME_OF_TOC(toc, idx) FRAME_OF_ADDR((toc)->TrackData[(idx) - (toc)->FirstTrack].Address)
#define GETWORD(buf,off) MAKEWORD(buf[(off)],buf[(off+1)])
#define GETLONG(buf,off) MAKELONG(GETWORD(buf,off),GETWORD(buf,off+2))
enum fs_type
{
FS_ERROR, /* error accessing the device */
FS_UNKNOWN, /* unknown file system */
FS_FAT1216,
FS_FAT32,
FS_ISO9660,
FS_UDF /* For reference [E] = Ecma-167.pdf, [U] = udf260.pdf */
};
/* get the path of a dos device symlink in the $WINEPREFIX/dosdevices directory */
static char *get_dos_device_path( LPCWSTR name )
{
const char *config_dir = wine_get_config_dir();
char *buffer, *dev;
int i;
if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
strlen(config_dir) + sizeof("/dosdevices/") + 5 )))
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
return NULL;
}
strcpy( buffer, config_dir );
strcat( buffer, "/dosdevices/" );
dev = buffer + strlen(buffer);
/* no codepage conversion, DOS device names are ASCII anyway */
for (i = 0; i < 5; i++)
if (!(dev[i] = (char)tolowerW(name[i]))) break;
dev[5] = 0;
return buffer;
}
/* read the contents of an NT symlink object */
static NTSTATUS read_nt_symlink( const WCHAR *name, WCHAR *target, DWORD size )
{
NTSTATUS status;
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nameW;
HANDLE handle;
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.Attributes = OBJ_CASE_INSENSITIVE;
attr.ObjectName = &nameW;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
RtlInitUnicodeString( &nameW, name );
if (!(status = NtOpenSymbolicLinkObject( &handle, SYMBOLIC_LINK_QUERY, &attr )))
{
UNICODE_STRING targetW;
targetW.Buffer = target;
targetW.MaximumLength = (size - 1) * sizeof(WCHAR);
status = NtQuerySymbolicLinkObject( handle, &targetW, NULL );
if (!status) target[targetW.Length / sizeof(WCHAR)] = 0;
NtClose( handle );
}
return status;
}
/* open a handle to a device root */
static BOOL open_device_root( LPCWSTR root, HANDLE *handle )
{
static const WCHAR default_rootW[] = {'\\',0};
UNICODE_STRING nt_name;
OBJECT_ATTRIBUTES attr;
IO_STATUS_BLOCK io;
NTSTATUS status;
if (!root) root = default_rootW;
if (!RtlDosPathNameToNtPathName_U( root, &nt_name, NULL, NULL ))
{
SetLastError( ERROR_PATH_NOT_FOUND );
return FALSE;
}
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.Attributes = OBJ_CASE_INSENSITIVE;
attr.ObjectName = &nt_name;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
status = NtOpenFile( handle, SYNCHRONIZE, &attr, &io, 0,
FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
RtlFreeUnicodeString( &nt_name );
if (status != STATUS_SUCCESS)
{
SetLastError( RtlNtStatusToDosError(status) );
return FALSE;
}
return TRUE;
}
/* query the type of a drive from the mount manager */
static DWORD get_mountmgr_drive_type( LPCWSTR root )
{
HANDLE mgr;
struct mountmgr_unix_drive data;
DWORD br;
memset( &data, 0, sizeof(data) );
if (root) data.letter = root[0];
else
{
WCHAR curdir[MAX_PATH];
GetCurrentDirectoryW( MAX_PATH, curdir );
if (curdir[1] != ':' || curdir[2] != '\\') return DRIVE_UNKNOWN;
data.letter = curdir[0];
}
mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, GENERIC_READ,
FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0 );
if (mgr == INVALID_HANDLE_VALUE) return DRIVE_UNKNOWN;
if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_UNIX_DRIVE, &data, sizeof(data), &data,
sizeof(data), &br, NULL ) && GetLastError() != ERROR_MORE_DATA)
data.type = DRIVE_UNKNOWN;
CloseHandle( mgr );
return data.type;
}
/* get the label by reading it from a file at the root of the filesystem */
static void get_filesystem_label( const UNICODE_STRING *device, WCHAR *label, DWORD len )
{
static const WCHAR labelW[] = {'.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
HANDLE handle;
UNICODE_STRING name;
IO_STATUS_BLOCK io;
OBJECT_ATTRIBUTES attr;
label[0] = 0;
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.Attributes = OBJ_CASE_INSENSITIVE;
attr.ObjectName = &name;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
name.MaximumLength = device->Length + sizeof(labelW);
name.Length = name.MaximumLength - sizeof(WCHAR);
if (!(name.Buffer = HeapAlloc( GetProcessHeap(), 0, name.MaximumLength ))) return;
memcpy( name.Buffer, device->Buffer, device->Length );
memcpy( name.Buffer + device->Length / sizeof(WCHAR), labelW, sizeof(labelW) );
if (!NtOpenFile( &handle, GENERIC_READ | SYNCHRONIZE, &attr, &io, FILE_SHARE_READ|FILE_SHARE_WRITE,
FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT ))
{
char buffer[256], *p;
DWORD size;
if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
CloseHandle( handle );
p = buffer + size;
while (p > buffer && (p[-1] == ' ' || p[-1] == '\r' || p[-1] == '\n')) p--;
*p = 0;
if (!MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, label, len ))
label[len-1] = 0;
}
RtlFreeUnicodeString( &name );
}
/* get the serial number by reading it from a file at the root of the filesystem */
static DWORD get_filesystem_serial( const UNICODE_STRING *device )
{
static const WCHAR serialW[] = {'.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
HANDLE handle;
UNICODE_STRING name;
IO_STATUS_BLOCK io;
OBJECT_ATTRIBUTES attr;
DWORD ret = 0;
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.Attributes = OBJ_CASE_INSENSITIVE;
attr.ObjectName = &name;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
name.MaximumLength = device->Length + sizeof(serialW);
name.Length = name.MaximumLength - sizeof(WCHAR);
if (!(name.Buffer = HeapAlloc( GetProcessHeap(), 0, name.MaximumLength ))) return 0;
memcpy( name.Buffer, device->Buffer, device->Length );
memcpy( name.Buffer + device->Length / sizeof(WCHAR), serialW, sizeof(serialW) );
if (!NtOpenFile( &handle, GENERIC_READ | SYNCHRONIZE, &attr, &io, FILE_SHARE_READ|FILE_SHARE_WRITE,
FILE_SYNCHRONOUS_IO_NONALERT ))
{
char buffer[32];
DWORD size;
if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
CloseHandle( handle );
buffer[size] = 0;
ret = strtoul( buffer, NULL, 16 );
}
RtlFreeUnicodeString( &name );
return ret;
}
/******************************************************************
* VOLUME_FindCdRomDataBestVoldesc
*/
static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
{
BYTE cur_vd_type, max_vd_type = 0;
BYTE buffer[0x800];
DWORD size, offs, best_offs = 0, extra_offs = 0;
for (offs = 0x8000; offs <= 0x9800; offs += 0x800)
{
/* if 'CDROM' occurs at position 8, this is a pre-iso9660 cd, and
* the volume label is displaced forward by 8
*/
if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs) break;
if (!ReadFile( handle, buffer, sizeof(buffer), &size, NULL )) break;
if (size != sizeof(buffer)) break;
/* check for non-ISO9660 signature */
if (!memcmp( buffer + 11, "ROM", 3 )) extra_offs = 8;
cur_vd_type = buffer[extra_offs];
if (cur_vd_type == 0xff) /* voldesc set terminator */
break;
if (cur_vd_type > max_vd_type)
{
max_vd_type = cur_vd_type;
best_offs = offs + extra_offs;
}
}
return best_offs;
}
/***********************************************************************
* VOLUME_ReadFATSuperblock
*/
static enum fs_type VOLUME_ReadFATSuperblock( HANDLE handle, BYTE *buff )
{
DWORD size;
/* try a fixed disk, with a FAT partition */
if (SetFilePointer( handle, 0, NULL, FILE_BEGIN ) != 0 ||
!ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ))
{
if (GetLastError() == ERROR_BAD_DEV_TYPE) return FS_UNKNOWN; /* not a real device */
return FS_ERROR;
}
if (size < SUPERBLOCK_SIZE) return FS_UNKNOWN;
/* FIXME: do really all FAT have their name beginning with
* "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
*/
if (!memcmp(buff+0x36, "FAT", 3) || !memcmp(buff+0x52, "FAT", 3))
{
/* guess which type of FAT we have */
int reasonable;
unsigned int sectors,
sect_per_fat,
total_sectors,
num_boot_sectors,
num_fats,
num_root_dir_ents,
bytes_per_sector,
sectors_per_cluster,
nclust;
sect_per_fat = GETWORD(buff, 0x16);
if (!sect_per_fat) sect_per_fat = GETLONG(buff, 0x24);
total_sectors = GETWORD(buff, 0x13);
if (!total_sectors)
total_sectors = GETLONG(buff, 0x20);
num_boot_sectors = GETWORD(buff, 0x0e);
num_fats = buff[0x10];
num_root_dir_ents = GETWORD(buff, 0x11);
bytes_per_sector = GETWORD(buff, 0x0b);
sectors_per_cluster = buff[0x0d];
/* check if the parameters are reasonable and will not cause
* arithmetic errors in the calculation */
reasonable = num_boot_sectors < total_sectors &&
num_fats < 16 &&
bytes_per_sector >= 512 && bytes_per_sector % 512 == 0 &&
sectors_per_cluster >= 1;
if (!reasonable) return FS_UNKNOWN;
sectors = total_sectors - num_boot_sectors - num_fats * sect_per_fat -
(num_root_dir_ents * 32 + bytes_per_sector - 1) / bytes_per_sector;
nclust = sectors / sectors_per_cluster;
if ((buff[0x42] == 0x28 || buff[0x42] == 0x29) &&
!memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
if (nclust < 65525)
{
if ((buff[0x26] == 0x28 || buff[0x26] == 0x29) &&
!memcmp(buff+0x36, "FAT", 3))
return FS_FAT1216;
}
}
return FS_UNKNOWN;
}
/***********************************************************************
* VOLUME_ReadCDBlock
*/
static BOOL VOLUME_ReadCDBlock( HANDLE handle, BYTE *buff, INT offs )
{
DWORD size, whence = offs >= 0 ? FILE_BEGIN : FILE_END;
if (SetFilePointer( handle, offs, NULL, whence ) != offs ||
!ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
size != SUPERBLOCK_SIZE)
return FALSE;
return TRUE;
}
/***********************************************************************
* VOLUME_ReadCDSuperblock
*/
static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
{
int i;
DWORD offs;
/* Check UDF first as UDF and ISO9660 structures can coexist on the same medium
* Starting from sector 16, we may find :
* - a CD-ROM Volume Descriptor Set (ISO9660) containing one or more Volume Descriptors
* - an Extended Area (UDF) -- [E] 2/8.3.1 and [U] 2.1.7
* There is no explicit end so read 16 sectors and then give up */
for( i=16; i<16+16; i++)
{
if (!VOLUME_ReadCDBlock(handle, buff, i*BLOCK_SIZE))
continue;
/* We are supposed to check "BEA01", "NSR0x" and "TEA01" IDs + verify tag checksum
* but we assume the volume is well-formatted */
if (!memcmp(&buff[1], "BEA01", 5)) return FS_UDF;
}
offs = VOLUME_FindCdRomDataBestVoldesc( handle );
if (!offs) return FS_UNKNOWN;
if (!VOLUME_ReadCDBlock(handle, buff, offs))
return FS_ERROR;
/* check for the iso9660 identifier */
if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
return FS_UNKNOWN;
}
/**************************************************************************
* UDF_Find_PVD
* Find the Primary Volume Descriptor
*/
static BOOL UDF_Find_PVD( HANDLE handle, BYTE pvd[] )
{
unsigned int i;
DWORD offset;
INT locations[] = { 256, -1, -257, 512 };
for(i=0; i<sizeof(locations)/sizeof(locations[0]); i++)
{
if (!VOLUME_ReadCDBlock(handle, pvd, locations[i]*BLOCK_SIZE))
return FALSE;
/* Tag Identifier of Anchor Volume Descriptor Pointer is 2 -- [E] 3/10.2.1 */
if (pvd[0]==2 && pvd[1]==0)
{
/* Tag location (Uint32) at offset 12, little-endian */
offset = pvd[20 + 0];
offset |= pvd[20 + 1] << 8;
offset |= pvd[20 + 2] << 16;
offset |= pvd[20 + 3] << 24;
offset *= BLOCK_SIZE;
if (!VOLUME_ReadCDBlock(handle, pvd, offset))
return FALSE;
/* Check for the Primary Volume Descriptor Tag Id -- [E] 3/10.1.1 */
if (pvd[0]!=1 || pvd[1]!=0)
return FALSE;
/* 8 or 16 bits per character -- [U] 2.1.1 */
if (!(pvd[24]==8 || pvd[24]==16))
return FALSE;
return TRUE;
}
}
return FALSE;
}
/**************************************************************************
* VOLUME_GetSuperblockLabel
*/
static void VOLUME_GetSuperblockLabel( const UNICODE_STRING *device, HANDLE handle,
enum fs_type type, const BYTE *superblock,
WCHAR *label, DWORD len )
{
const BYTE *label_ptr = NULL;
DWORD label_len;
switch(type)
{
case FS_ERROR:
label_len = 0;
break;
case FS_UNKNOWN:
get_filesystem_label( device, label, len );
return;
case FS_FAT1216:
label_ptr = superblock + 0x2b;
label_len = 11;
break;
case FS_FAT32:
label_ptr = superblock + 0x47;
label_len = 11;
break;
case FS_ISO9660:
{
BYTE ver = superblock[0x5a];
if (superblock[0x58] == 0x25 && superblock[0x59] == 0x2f && /* Unicode ID */
((ver == 0x40) || (ver == 0x43) || (ver == 0x45)))
{ /* yippee, unicode */
unsigned int i;
if (len > 17) len = 17;
for (i = 0; i < len-1; i++)
label[i] = (superblock[40+2*i] << 8) | superblock[41+2*i];
label[i] = 0;
while (i && label[i-1] == ' ') label[--i] = 0;
return;
}
label_ptr = superblock + 40;
label_len = 32;
break;
}
case FS_UDF:
{
BYTE pvd[BLOCK_SIZE];
if(!UDF_Find_PVD(handle, pvd))
{
label_len = 0;
break;
}
/* [E] 3/10.1.4 and [U] 2.1.1 */
if(pvd[24]==8)
{
label_ptr = pvd + 24 + 1;
label_len = pvd[24+32-1];
break;
}
else
{
unsigned int i;
label_len = 1 + pvd[24+32-1];
for(i=0; i<label_len && i<len; i+=2)
label[i/2] = (pvd[24+1 +i] << 8) | pvd[24+1 +i+1];
label[label_len] = 0;
return;
}
}
}
if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
&label_len, (LPCSTR)label_ptr, label_len );
label_len /= sizeof(WCHAR);
label[label_len] = 0;
while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
}
/**************************************************************************
* UDF_Find_FSD_Sector
* Find the File Set Descriptor used to compute the serial of a UDF volume
*/
static int UDF_Find_FSD_Sector( HANDLE handle, BYTE block[] )
{
int i, PVD_sector, PD_sector, PD_length;
if(!UDF_Find_PVD(handle,block))
goto default_sector;
/* Retrieve the tag location of the PVD -- [E] 3/7.2 */
PVD_sector = block[12 + 0];
PVD_sector |= block[12 + 1] << 8;
PVD_sector |= block[12 + 2] << 16;
PVD_sector |= block[12 + 3] << 24;
/* Find the Partition Descriptor */
for(i=PVD_sector+1; ; i++)
{
if(!VOLUME_ReadCDBlock(handle, block, i*BLOCK_SIZE))
goto default_sector;
/* Partition Descriptor Tag Id -- [E] 3/10.5.1 */
if(block[0]==5 && block[1]==0)
break;
/* Terminating Descriptor Tag Id -- [E] 3/10.9.1 */
if(block[0]==8 && block[1]==0)
goto default_sector;
}
/* Find the partition starting location -- [E] 3/10.5.8 */
PD_sector = block[188 + 0];
PD_sector |= block[188 + 1] << 8;
PD_sector |= block[188 + 2] << 16;
PD_sector |= block[188 + 3] << 24;
/* Find the partition length -- [E] 3/10.5.9 */
PD_length = block[192 + 0];
PD_length |= block[192 + 1] << 8;
PD_length |= block[192 + 2] << 16;
PD_length |= block[192 + 3] << 24;
for(i=PD_sector; i<PD_sector+PD_length; i++)
{
if(!VOLUME_ReadCDBlock(handle, block, i*BLOCK_SIZE))
goto default_sector;
/* File Set Descriptor Tag Id -- [E] 3/14.1.1 */
if(block[0]==0 && block[1]==1)
return i;
}
default_sector:
WARN("FSD sector not found, serial may be incorrect\n");
return 257;
}
/**************************************************************************
* VOLUME_GetSuperblockSerial
*/
static DWORD VOLUME_GetSuperblockSerial( const UNICODE_STRING *device, HANDLE handle,
enum fs_type type, const BYTE *superblock )
{
int FSD_sector;
BYTE block[BLOCK_SIZE];
switch(type)
{
case FS_ERROR:
break;
case FS_UNKNOWN:
return get_filesystem_serial( device );
case FS_FAT1216:
return GETLONG( superblock, 0x27 );
case FS_FAT32:
return GETLONG( superblock, 0x33 );
case FS_UDF:
FSD_sector = UDF_Find_FSD_Sector(handle, block);
if (!VOLUME_ReadCDBlock(handle, block, FSD_sector*BLOCK_SIZE))
break;
superblock = block;
/* fallthrough */
case FS_ISO9660:
{
BYTE sum[4];
int i;
sum[0] = sum[1] = sum[2] = sum[3] = 0;
for (i = 0; i < 2048; i += 4)
{
/* DON'T optimize this into DWORD !! (breaks overflow) */
sum[0] += superblock[i+0];
sum[1] += superblock[i+1];
sum[2] += superblock[i+2];
sum[3] += superblock[i+3];
}
/*
* OK, another braindead one... argh. Just believe it.
* Me$$ysoft chose to reverse the serial number in NT4/W2K.
* It's true and nobody will ever be able to change it.
*/
if ((GetVersion() & 0x80000000) || type == FS_UDF)
return (sum[3] << 24) | (sum[2] << 16) | (sum[1] << 8) | sum[0];
else
return (sum[0] << 24) | (sum[1] << 16) | (sum[2] << 8) | sum[3];
}
}
return 0;
}
/**************************************************************************
* VOLUME_GetAudioCDSerial
*/
static DWORD VOLUME_GetAudioCDSerial( const CDROM_TOC *toc )
{
DWORD serial = 0;
int i;
for (i = 0; i <= toc->LastTrack - toc->FirstTrack; i++)
serial += ((toc->TrackData[i].Address[1] << 16) |
(toc->TrackData[i].Address[2] << 8) |
toc->TrackData[i].Address[3]);
/*
* dwStart, dwEnd collect the beginning and end of the disc respectively, in
* frames.
* There it is collected for correcting the serial when there are less than
* 3 tracks.
*/
if (toc->LastTrack - toc->FirstTrack + 1 < 3)
{
DWORD dwStart = FRAME_OF_TOC(toc, toc->FirstTrack);
DWORD dwEnd = FRAME_OF_TOC(toc, toc->LastTrack + 1);
serial += dwEnd - dwStart;
}
return serial;
}
/***********************************************************************
* GetVolumeInformationW (KERNEL32.@)
*/
BOOL WINAPI GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
DWORD *serial, DWORD *filename_len, DWORD *flags,
LPWSTR fsname, DWORD fsname_len )
{
static const WCHAR audiocdW[] = {'A','u','d','i','o',' ','C','D',0};
static const WCHAR fatW[] = {'F','A','T',0};
static const WCHAR fat32W[] = {'F','A','T','3','2',0};
static const WCHAR ntfsW[] = {'N','T','F','S',0};
static const WCHAR cdfsW[] = {'C','D','F','S',0};
static const WCHAR udfW[] = {'U','D','F',0};
static const WCHAR default_rootW[] = {'\\',0};
HANDLE handle;
NTSTATUS status;
UNICODE_STRING nt_name;
IO_STATUS_BLOCK io;
OBJECT_ATTRIBUTES attr;
FILE_FS_DEVICE_INFORMATION info;
WCHAR *p;
enum fs_type type = FS_UNKNOWN;
BOOL ret = FALSE;
if (!root) root = default_rootW;
if (!RtlDosPathNameToNtPathName_U( root, &nt_name, NULL, NULL ))
{
SetLastError( ERROR_PATH_NOT_FOUND );
return FALSE;
}
/* there must be exactly one backslash in the name, at the end */
p = memchrW( nt_name.Buffer + 4, '\\', (nt_name.Length - 4) / sizeof(WCHAR) );
if (p != nt_name.Buffer + nt_name.Length / sizeof(WCHAR) - 1)
{
/* check if root contains an explicit subdir */
if (root[0] && root[1] == ':') root += 2;
while (*root == '\\') root++;
if (strchrW( root, '\\' ))
SetLastError( ERROR_DIR_NOT_ROOT );
else
SetLastError( ERROR_INVALID_NAME );
goto done;
}
/* try to open the device */
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.Attributes = OBJ_CASE_INSENSITIVE;
attr.ObjectName = &nt_name;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
nt_name.Length -= sizeof(WCHAR); /* without trailing slash */
status = NtOpenFile( &handle, GENERIC_READ | SYNCHRONIZE, &attr, &io, FILE_SHARE_READ | FILE_SHARE_WRITE,
FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
nt_name.Length += sizeof(WCHAR);
if (status == STATUS_SUCCESS)
{
BYTE superblock[SUPERBLOCK_SIZE];
CDROM_TOC toc;
DWORD br;
/* check for audio CD */
/* FIXME: we only check the first track for now */
if (DeviceIoControl( handle, IOCTL_CDROM_READ_TOC, NULL, 0, &toc, sizeof(toc), &br, 0 ))
{
if (!(toc.TrackData[0].Control & 0x04)) /* audio track */
{
TRACE( "%s: found audio CD\n", debugstr_w(nt_name.Buffer) );
if (label) lstrcpynW( label, audiocdW, label_len );
if (serial) *serial = VOLUME_GetAudioCDSerial( &toc );
CloseHandle( handle );
type = FS_ISO9660;
goto fill_fs_info;
}
type = VOLUME_ReadCDSuperblock( handle, superblock );
}
else
{
type = VOLUME_ReadFATSuperblock( handle, superblock );
if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
}
TRACE( "%s: found fs type %d\n", debugstr_w(nt_name.Buffer), type );
if (type == FS_ERROR)
{
CloseHandle( handle );
goto done;
}
if (label && label_len) VOLUME_GetSuperblockLabel( &nt_name, handle, type, superblock, label, label_len );
if (serial) *serial = VOLUME_GetSuperblockSerial( &nt_name, handle, type, superblock );
CloseHandle( handle );
goto fill_fs_info;
}
else TRACE( "cannot open device %s: %x\n", debugstr_w(nt_name.Buffer), status );
/* we couldn't open the device, fallback to default strategy */
status = NtOpenFile( &handle, SYNCHRONIZE, &attr, &io, 0, FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
if (status != STATUS_SUCCESS)
{
SetLastError( RtlNtStatusToDosError(status) );
goto done;
}
status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
NtClose( handle );
if (status != STATUS_SUCCESS)
{
SetLastError( RtlNtStatusToDosError(status) );
goto done;
}
if (info.DeviceType == FILE_DEVICE_CD_ROM_FILE_SYSTEM) type = FS_ISO9660;
if (label && label_len) get_filesystem_label( &nt_name, label, label_len );
if (serial) *serial = get_filesystem_serial( &nt_name );
fill_fs_info: /* now fill in the information that depends on the file system type */
switch(type)
{
case FS_ISO9660:
if (fsname) lstrcpynW( fsname, cdfsW, fsname_len );
if (filename_len) *filename_len = 221;
if (flags) *flags = FILE_READ_ONLY_VOLUME;
break;
case FS_UDF:
if (fsname) lstrcpynW( fsname, udfW, fsname_len );
if (filename_len) *filename_len = 255;
if (flags)
*flags = FILE_READ_ONLY_VOLUME | FILE_UNICODE_ON_DISK | FILE_CASE_SENSITIVE_SEARCH;
break;
case FS_FAT1216:
if (fsname) lstrcpynW( fsname, fatW, fsname_len );
case FS_FAT32:
if (type == FS_FAT32 && fsname) lstrcpynW( fsname, fat32W, fsname_len );
if (filename_len) *filename_len = 255;
if (flags) *flags = FILE_CASE_PRESERVED_NAMES; /* FIXME */
break;
default:
if (fsname) lstrcpynW( fsname, ntfsW, fsname_len );
if (filename_len) *filename_len = 255;
if (flags) *flags = FILE_CASE_PRESERVED_NAMES | FILE_PERSISTENT_ACLS;
break;
}
ret = TRUE;
done:
RtlFreeUnicodeString( &nt_name );
return ret;
}
/***********************************************************************
* GetVolumeInformationA (KERNEL32.@)
*/
BOOL WINAPI GetVolumeInformationA( LPCSTR root, LPSTR label,
DWORD label_len, DWORD *serial,
DWORD *filename_len, DWORD *flags,
LPSTR fsname, DWORD fsname_len )
{
WCHAR *rootW = NULL;
LPWSTR labelW, fsnameW;
BOOL ret;
if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
if ((ret = GetVolumeInformationW(rootW, labelW, label_len, serial,
filename_len, flags, fsnameW, fsname_len)))
{
if (label) FILE_name_WtoA( labelW, -1, label, label_len );
if (fsname) FILE_name_WtoA( fsnameW, -1, fsname, fsname_len );
}
HeapFree( GetProcessHeap(), 0, labelW );
HeapFree( GetProcessHeap(), 0, fsnameW );
return ret;
}
/***********************************************************************
* SetVolumeLabelW (KERNEL32.@)
*/
BOOL WINAPI SetVolumeLabelW( LPCWSTR root, LPCWSTR label )
{
WCHAR device[] = {'\\','\\','.','\\','A',':',0};
HANDLE handle;
enum fs_type type = FS_UNKNOWN;
if (!root)
{
WCHAR path[MAX_PATH];
GetCurrentDirectoryW( MAX_PATH, path );
device[4] = path[0];
}
else
{
if (!root[0] || root[1] != ':')
{
SetLastError( ERROR_INVALID_NAME );
return FALSE;
}
device[4] = root[0];
}
/* try to open the device */
handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, 0 );
if (handle != INVALID_HANDLE_VALUE)
{
BYTE superblock[SUPERBLOCK_SIZE];
type = VOLUME_ReadFATSuperblock( handle, superblock );
if (type == FS_UNKNOWN) type = VOLUME_ReadCDSuperblock( handle, superblock );
CloseHandle( handle );
if (type != FS_UNKNOWN)
{
/* we can't set the label on FAT or CDROM file systems */
TRACE( "cannot set label on device %s type %d\n", debugstr_w(device), type );
SetLastError( ERROR_ACCESS_DENIED );
return FALSE;
}
}
else
{
TRACE( "cannot open device %s: err %d\n", debugstr_w(device), GetLastError() );
if (GetLastError() == ERROR_ACCESS_DENIED) return FALSE;
}
/* we couldn't open the device, fallback to default strategy */
switch(GetDriveTypeW( root ))
{
case DRIVE_UNKNOWN:
case DRIVE_NO_ROOT_DIR:
SetLastError( ERROR_NOT_READY );
break;
case DRIVE_REMOVABLE:
case DRIVE_FIXED:
{
WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
labelW[0] = device[4];
if (!label[0]) /* delete label file when setting an empty label */
return DeleteFileW( labelW ) || GetLastError() == ERROR_FILE_NOT_FOUND;
handle = CreateFileW( labelW, GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
CREATE_ALWAYS, 0, 0 );
if (handle != INVALID_HANDLE_VALUE)
{
char buffer[64];
DWORD size;
if (!WideCharToMultiByte( CP_UNIXCP, 0, label, -1, buffer, sizeof(buffer)-1, NULL, NULL ))
buffer[sizeof(buffer)-2] = 0;
strcat( buffer, "\n" );
WriteFile( handle, buffer, strlen(buffer), &size, NULL );
CloseHandle( handle );
return TRUE;
}
break;
}
case DRIVE_REMOTE:
case DRIVE_RAMDISK:
case DRIVE_CDROM:
SetLastError( ERROR_ACCESS_DENIED );
break;
}
return FALSE;
}
/***********************************************************************
* SetVolumeLabelA (KERNEL32.@)
*/
BOOL WINAPI SetVolumeLabelA(LPCSTR root, LPCSTR volname)
{
WCHAR *rootW = NULL, *volnameW = NULL;
BOOL ret;
if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
if (volname && !(volnameW = FILE_name_AtoW( volname, TRUE ))) return FALSE;
ret = SetVolumeLabelW( rootW, volnameW );
HeapFree( GetProcessHeap(), 0, volnameW );
return ret;
}
/***********************************************************************
* GetVolumeNameForVolumeMountPointA (KERNEL32.@)
*/
BOOL WINAPI GetVolumeNameForVolumeMountPointA( LPCSTR path, LPSTR volume, DWORD size )
{
BOOL ret;
WCHAR volumeW[50], *pathW = NULL;
DWORD len = min( sizeof(volumeW) / sizeof(WCHAR), size );
TRACE("(%s, %p, %x)\n", debugstr_a(path), volume, size);
if (!path || !(pathW = FILE_name_AtoW( path, TRUE )))
return FALSE;
if ((ret = GetVolumeNameForVolumeMountPointW( pathW, volumeW, len )))
FILE_name_WtoA( volumeW, -1, volume, len );
HeapFree( GetProcessHeap(), 0, pathW );
return ret;
}
/***********************************************************************
* GetVolumeNameForVolumeMountPointW (KERNEL32.@)
*/
BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWORD size )
{
static const WCHAR prefixW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\',0};
static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{'};
static const WCHAR trailingW[] = {'\\',0};
MOUNTMGR_MOUNT_POINT *input = NULL, *o1;
MOUNTMGR_MOUNT_POINTS *output = NULL;
WCHAR *p;
char *r;
DWORD i, i_size = 1024, o_size = 1024;
WCHAR *nonpersist_name;
WCHAR symlink_name[MAX_PATH];
NTSTATUS status;
HANDLE mgr = INVALID_HANDLE_VALUE;
BOOL ret = FALSE;
DWORD br;
TRACE("(%s, %p, %x)\n", debugstr_w(path), volume, size);
if (path[lstrlenW(path)-1] != '\\')
{
SetLastError( ERROR_INVALID_NAME );
return FALSE;
}
if (size < 50)
{
SetLastError( ERROR_FILENAME_EXCED_RANGE );
return FALSE;
}
/* if length of input is > 3 then it must be a mounted folder */
if (lstrlenW(path) > 3)
{
FIXME("Mounted Folders are not yet supported\n");
SetLastError( ERROR_NOT_A_REPARSE_POINT );
return FALSE;
}
mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ,
NULL, OPEN_EXISTING, 0, 0 );
if (mgr == INVALID_HANDLE_VALUE) return FALSE;
if (!(input = HeapAlloc( GetProcessHeap(), 0, i_size )))
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
goto err_ret;
}
if (!(output = HeapAlloc( GetProcessHeap(), 0, o_size )))
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
goto err_ret;
}
/* construct the symlink name as "\DosDevices\C:" */
lstrcpyW( symlink_name, prefixW );
lstrcatW( symlink_name, path );
symlink_name[lstrlenW(symlink_name)-1] = 0;
/* Take the mount point and get the "nonpersistent name" */
/* We will then take that and get the volume name */
nonpersist_name = (WCHAR *)(input + 1);
status = read_nt_symlink( symlink_name, nonpersist_name, i_size - sizeof(*input) );
TRACE("read_nt_symlink got stat=%x, for %s, got <%s>\n", status,
debugstr_w(symlink_name), debugstr_w(nonpersist_name));
if (status != STATUS_SUCCESS)
{
SetLastError( ERROR_FILE_NOT_FOUND );
goto err_ret;
}
/* Now take the "nonpersistent name" and ask the mountmgr */
/* to give us all the mount points. One of them will be */
/* the volume name (format of \??\Volume{). */
memset( input, 0, sizeof(*input) ); /* clear all input parameters */
input->DeviceNameOffset = sizeof(*input);
input->DeviceNameLength = lstrlenW( nonpersist_name) * sizeof(WCHAR);
i_size = input->DeviceNameOffset + input->DeviceNameLength;
output->Size = o_size;
/* now get the true volume name from the mountmgr */
if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, input, i_size,
output, o_size, &br, NULL ))
goto err_ret;
/* Verify and return the data, note string is not null terminated */
TRACE("found %d matching mount points\n", output->NumberOfMountPoints);
if (output->NumberOfMountPoints < 1)
{
SetLastError( ERROR_NO_VOLUME_ID );
goto err_ret;
}
o1 = &output->MountPoints[0];
/* look for the volume name in returned values */
for(i=0;i<output->NumberOfMountPoints;i++)
{
p = (WCHAR*)((char *)output + o1->SymbolicLinkNameOffset);
r = (char *)output + o1->UniqueIdOffset;
TRACE("found symlink=%s, unique=%s, devname=%s\n",
debugstr_wn(p, o1->SymbolicLinkNameLength/sizeof(WCHAR)),
debugstr_an(r, o1->UniqueIdLength),
debugstr_wn((WCHAR*)((char *)output + o1->DeviceNameOffset),
o1->DeviceNameLength/sizeof(WCHAR)));
if (!strncmpW( p, volumeW, sizeof(volumeW)/sizeof(WCHAR) ))
{
/* is there space in the return variable ?? */
if ((o1->SymbolicLinkNameLength/sizeof(WCHAR))+2 > size)
{
SetLastError( ERROR_FILENAME_EXCED_RANGE );
goto err_ret;
}
memcpy( volume, p, o1->SymbolicLinkNameLength );
volume[o1->SymbolicLinkNameLength / sizeof(WCHAR)] = 0;
lstrcatW( volume, trailingW );
/* change second char from '?' to '\' */
volume[1] = '\\';
ret = TRUE;
break;
}
o1++;
}
err_ret:
HeapFree( GetProcessHeap(), 0, input );
HeapFree( GetProcessHeap(), 0, output );
CloseHandle( mgr );
return ret;
}
/***********************************************************************
* DefineDosDeviceW (KERNEL32.@)
*/
BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
{
DWORD len, dosdev;
BOOL ret = FALSE;
char *path = NULL, *target, *p;
TRACE("%x, %s, %s\n", flags, debugstr_w(devname), debugstr_w(targetpath));
if (!(flags & DDD_REMOVE_DEFINITION))
{
if (!(flags & DDD_RAW_TARGET_PATH))
{
FIXME( "(0x%08x,%s,%s) DDD_RAW_TARGET_PATH flag not set, not supported yet\n",
flags, debugstr_w(devname), debugstr_w(targetpath) );
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return FALSE;
}
len = WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, NULL, 0, NULL, NULL );
if ((target = HeapAlloc( GetProcessHeap(), 0, len )))
{
WideCharToMultiByte( CP_UNIXCP, 0, targetpath, -1, target, len, NULL, NULL );
for (p = target; *p; p++) if (*p == '\\') *p = '/';
}
else
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
return FALSE;
}
}
else target = NULL;
/* first check for a DOS device */
if ((dosdev = RtlIsDosDeviceName_U( devname )))
{
WCHAR name[5];
memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
path = get_dos_device_path( name );
}
else if (isalphaW(devname[0]) && devname[1] == ':' && !devname[2]) /* drive mapping */
{
path = get_dos_device_path( devname );
}
else SetLastError( ERROR_FILE_NOT_FOUND );
if (path)
{
if (target)
{
TRACE( "creating symlink %s -> %s\n", path, target );
unlink( path );
if (!symlink( target, path )) ret = TRUE;
else FILE_SetDosError();
}
else
{
TRACE( "removing symlink %s\n", path );
if (!unlink( path )) ret = TRUE;
else FILE_SetDosError();
}
HeapFree( GetProcessHeap(), 0, path );
}
HeapFree( GetProcessHeap(), 0, target );
return ret;
}
/***********************************************************************
* DefineDosDeviceA (KERNEL32.@)
*/
BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
{
WCHAR *devW, *targetW = NULL;
BOOL ret;
if (!(devW = FILE_name_AtoW( devname, FALSE ))) return FALSE;
if (targetpath && !(targetW = FILE_name_AtoW( targetpath, TRUE ))) return FALSE;
ret = DefineDosDeviceW(flags, devW, targetW);
HeapFree( GetProcessHeap(), 0, targetW );
return ret;
}
/***********************************************************************
* QueryDosDeviceW (KERNEL32.@)
*
* returns array of strings terminated by \0, terminated by \0
*/
DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
{
static const WCHAR dosdevW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\',0};
UNICODE_STRING nt_name;
NTSTATUS status;
if (!bufsize)
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
return 0;
}
if (devname)
{
WCHAR name[8];
WCHAR *buffer;
DWORD dosdev, ret = 0;
if ((dosdev = RtlIsDosDeviceName_U( devname )))
{
memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
devname = name;
}
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, sizeof(dosdevW) + strlenW(devname)*sizeof(WCHAR) )))
{
SetLastError( ERROR_OUTOFMEMORY );
return 0;
}
memcpy( buffer, dosdevW, sizeof(dosdevW) );
strcatW( buffer, devname );
status = read_nt_symlink( buffer, target, bufsize );
HeapFree( GetProcessHeap(), 0, buffer );
if (status)
{
SetLastError( RtlNtStatusToDosError(status) );
return 0;
}
ret = strlenW( target ) + 1;
if (ret < bufsize) target[ret++] = 0; /* add an extra null */
return ret;
}
else /* return a list of all devices */
{
OBJECT_ATTRIBUTES attr;
HANDLE handle;
WCHAR *p = target;
RtlInitUnicodeString( &nt_name, dosdevW );
nt_name.Length -= sizeof(WCHAR); /* without trailing slash */
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = &nt_name;
attr.Attributes = OBJ_CASE_INSENSITIVE;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
status = NtOpenDirectoryObject( &handle, FILE_LIST_DIRECTORY, &attr );
if (!status)
{
char data[1024];
DIRECTORY_BASIC_INFORMATION *info = (DIRECTORY_BASIC_INFORMATION *)data;
ULONG ctx = 0, len;
while (!NtQueryDirectoryObject( handle, info, sizeof(data), 1, 0, &ctx, &len ))
{
if (p + info->ObjectName.Length/sizeof(WCHAR) + 1 >= target + bufsize)
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
NtClose( handle );
return 0;
}
memcpy( p, info->ObjectName.Buffer, info->ObjectName.Length );
p += info->ObjectName.Length/sizeof(WCHAR);
*p++ = 0;
}
NtClose( handle );
}
*p++ = 0; /* terminating null */
return p - target;
}
}
/***********************************************************************
* QueryDosDeviceA (KERNEL32.@)
*
* returns array of strings terminated by \0, terminated by \0
*/
DWORD WINAPI QueryDosDeviceA( LPCSTR devname, LPSTR target, DWORD bufsize )
{
DWORD ret = 0, retW;
WCHAR *devnameW = NULL;
LPWSTR targetW;
if (devname && !(devnameW = FILE_name_AtoW( devname, FALSE ))) return 0;
targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
if (!targetW)
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
return 0;
}
retW = QueryDosDeviceW(devnameW, targetW, bufsize);
ret = FILE_name_WtoA( targetW, retW, target, bufsize );
HeapFree(GetProcessHeap(), 0, targetW);
return ret;
}
/***********************************************************************
* GetLogicalDrives (KERNEL32.@)
*/
DWORD WINAPI GetLogicalDrives(void)
{
static const WCHAR dosdevW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\',0};
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nt_name;
DWORD bitmask = 0;
NTSTATUS status;
HANDLE handle;
RtlInitUnicodeString( &nt_name, dosdevW );
nt_name.Length -= sizeof(WCHAR); /* without trailing slash */
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = &nt_name;
attr.Attributes = OBJ_CASE_INSENSITIVE;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
status = NtOpenDirectoryObject( &handle, FILE_LIST_DIRECTORY, &attr );
if (!status)
{
char data[1024];
DIRECTORY_BASIC_INFORMATION *info = (DIRECTORY_BASIC_INFORMATION *)data;
ULONG ctx = 0, len;
while (!NtQueryDirectoryObject( handle, info, sizeof(data), 1, 0, &ctx, &len ))
if(info->ObjectName.Length == 2*sizeof(WCHAR) && info->ObjectName.Buffer[1] == ':')
bitmask |= 1 << (info->ObjectName.Buffer[0] - 'A');
NtClose( handle );
}
return bitmask;
}
/***********************************************************************
* GetLogicalDriveStringsA (KERNEL32.@)
*/
UINT WINAPI GetLogicalDriveStringsA( UINT len, LPSTR buffer )
{
DWORD drives = GetLogicalDrives();
UINT drive, count;
for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
if ((count * 4) + 1 > len) return count * 4 + 1;
for (drive = 0; drive < 26; drive++)
{
if (drives & (1 << drive))
{
*buffer++ = 'A' + drive;
*buffer++ = ':';
*buffer++ = '\\';
*buffer++ = 0;
}
}
*buffer = 0;
return count * 4;
}
/***********************************************************************
* GetLogicalDriveStringsW (KERNEL32.@)
*/
UINT WINAPI GetLogicalDriveStringsW( UINT len, LPWSTR buffer )
{
DWORD drives = GetLogicalDrives();
UINT drive, count;
for (drive = count = 0; drive < 26; drive++) if (drives & (1 << drive)) count++;
if ((count * 4) + 1 > len) return count * 4 + 1;
for (drive = 0; drive < 26; drive++)
{
if (drives & (1 << drive))
{
*buffer++ = 'A' + drive;
*buffer++ = ':';
*buffer++ = '\\';
*buffer++ = 0;
}
}
*buffer = 0;
return count * 4;
}
/***********************************************************************
* GetDriveTypeW (KERNEL32.@)
*
* Returns the type of the disk drive specified. If root is NULL the
* root of the current directory is used.
*
* RETURNS
*
* Type of drive (from Win32 SDK):
*
* DRIVE_UNKNOWN unable to find out anything about the drive
* DRIVE_NO_ROOT_DIR nonexistent root dir
* DRIVE_REMOVABLE the disk can be removed from the machine
* DRIVE_FIXED the disk cannot be removed from the machine
* DRIVE_REMOTE network disk
* DRIVE_CDROM CDROM drive
* DRIVE_RAMDISK virtual disk in RAM
*/
UINT WINAPI GetDriveTypeW(LPCWSTR root) /* [in] String describing drive */
{
FILE_FS_DEVICE_INFORMATION info;
IO_STATUS_BLOCK io;
NTSTATUS status;
HANDLE handle;
UINT ret;
if (!open_device_root( root, &handle ))
{
/* CD ROM devices do not necessarily have a volume, but a drive type */
ret = get_mountmgr_drive_type( root );
if (ret == DRIVE_CDROM || ret == DRIVE_REMOVABLE)
return ret;
return DRIVE_NO_ROOT_DIR;
}
status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsDeviceInformation );
NtClose( handle );
if (status != STATUS_SUCCESS)
{
SetLastError( RtlNtStatusToDosError(status) );
ret = DRIVE_UNKNOWN;
}
else
{
switch (info.DeviceType)
{
case FILE_DEVICE_CD_ROM_FILE_SYSTEM: ret = DRIVE_CDROM; break;
case FILE_DEVICE_VIRTUAL_DISK: ret = DRIVE_RAMDISK; break;
case FILE_DEVICE_NETWORK_FILE_SYSTEM: ret = DRIVE_REMOTE; break;
case FILE_DEVICE_DISK_FILE_SYSTEM:
if (info.Characteristics & FILE_REMOTE_DEVICE) ret = DRIVE_REMOTE;
else if (info.Characteristics & FILE_REMOVABLE_MEDIA) ret = DRIVE_REMOVABLE;
else if ((ret = get_mountmgr_drive_type( root )) == DRIVE_UNKNOWN) ret = DRIVE_FIXED;
break;
default:
ret = DRIVE_UNKNOWN;
break;
}
}
TRACE( "%s -> %d\n", debugstr_w(root), ret );
return ret;
}
/***********************************************************************
* GetDriveTypeA (KERNEL32.@)
*
* See GetDriveTypeW.
*/
UINT WINAPI GetDriveTypeA( LPCSTR root )
{
WCHAR *rootW = NULL;
if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
return GetDriveTypeW( rootW );
}
/***********************************************************************
* GetDiskFreeSpaceExW (KERNEL32.@)
*
* This function is used to acquire the size of the available and
* total space on a logical volume.
*
* RETURNS
*
* Zero on failure, nonzero upon success. Use GetLastError to obtain
* detailed error information.
*
*/
BOOL WINAPI GetDiskFreeSpaceExW( LPCWSTR root, PULARGE_INTEGER avail,
PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
{
FILE_FS_SIZE_INFORMATION info;
IO_STATUS_BLOCK io;
NTSTATUS status;
HANDLE handle;
UINT units;
TRACE( "%s,%p,%p,%p\n", debugstr_w(root), avail, total, totalfree );
if (!open_device_root( root, &handle )) return FALSE;
status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
NtClose( handle );
if (status != STATUS_SUCCESS)
{
SetLastError( RtlNtStatusToDosError(status) );
return FALSE;
}
units = info.SectorsPerAllocationUnit * info.BytesPerSector;
if (total) total->QuadPart = info.TotalAllocationUnits.QuadPart * units;
if (totalfree) totalfree->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
/* FIXME: this one should take quotas into account */
if (avail) avail->QuadPart = info.AvailableAllocationUnits.QuadPart * units;
return TRUE;
}
/***********************************************************************
* GetDiskFreeSpaceExA (KERNEL32.@)
*
* See GetDiskFreeSpaceExW.
*/
BOOL WINAPI GetDiskFreeSpaceExA( LPCSTR root, PULARGE_INTEGER avail,
PULARGE_INTEGER total, PULARGE_INTEGER totalfree )
{
WCHAR *rootW = NULL;
if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
return GetDiskFreeSpaceExW( rootW, avail, total, totalfree );
}
/***********************************************************************
* GetDiskFreeSpaceW (KERNEL32.@)
*/
BOOL WINAPI GetDiskFreeSpaceW( LPCWSTR root, LPDWORD cluster_sectors,
LPDWORD sector_bytes, LPDWORD free_clusters,
LPDWORD total_clusters )
{
FILE_FS_SIZE_INFORMATION info;
IO_STATUS_BLOCK io;
NTSTATUS status;
HANDLE handle;
UINT units;
TRACE( "%s,%p,%p,%p,%p\n", debugstr_w(root),
cluster_sectors, sector_bytes, free_clusters, total_clusters );
if (!open_device_root( root, &handle )) return FALSE;
status = NtQueryVolumeInformationFile( handle, &io, &info, sizeof(info), FileFsSizeInformation );
NtClose( handle );
if (status != STATUS_SUCCESS)
{
SetLastError( RtlNtStatusToDosError(status) );
return FALSE;
}
units = info.SectorsPerAllocationUnit * info.BytesPerSector;
if( GetVersion() & 0x80000000) { /* win3.x, 9x, ME */
/* cap the size and available at 2GB as per specs */
if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff) {
info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
}
/* nr. of clusters is always <= 65335 */
while( info.TotalAllocationUnits.QuadPart > 65535 ) {
info.TotalAllocationUnits.QuadPart /= 2;
info.AvailableAllocationUnits.QuadPart /= 2;
info.SectorsPerAllocationUnit *= 2;
}
}
if (cluster_sectors) *cluster_sectors = info.SectorsPerAllocationUnit;
if (sector_bytes) *sector_bytes = info.BytesPerSector;
if (free_clusters) *free_clusters = info.AvailableAllocationUnits.u.LowPart;
if (total_clusters) *total_clusters = info.TotalAllocationUnits.u.LowPart;
TRACE("%#08x, %#08x, %#08x, %#08x\n", info.SectorsPerAllocationUnit, info.BytesPerSector,
info.AvailableAllocationUnits.u.LowPart, info.TotalAllocationUnits.u.LowPart);
return TRUE;
}
/***********************************************************************
* GetDiskFreeSpaceA (KERNEL32.@)
*/
BOOL WINAPI GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_sectors,
LPDWORD sector_bytes, LPDWORD free_clusters,
LPDWORD total_clusters )
{
WCHAR *rootW = NULL;
if (root && !(rootW = FILE_name_AtoW( root, FALSE ))) return FALSE;
return GetDiskFreeSpaceW( rootW, cluster_sectors, sector_bytes, free_clusters, total_clusters );
}
/***********************************************************************
* GetVolumePathNameA (KERNEL32.@)
*/
BOOL WINAPI GetVolumePathNameA(LPCSTR filename, LPSTR volumepathname, DWORD buflen)
{
BOOL ret;
WCHAR *filenameW = NULL, *volumeW = NULL;
TRACE("(%s, %p, %d)\n", debugstr_a(filename), volumepathname, buflen);
if (filename && !(filenameW = FILE_name_AtoW( filename, FALSE )))
return FALSE;
if (volumepathname && !(volumeW = HeapAlloc( GetProcessHeap(), 0, buflen * sizeof(WCHAR) )))
return FALSE;
if ((ret = GetVolumePathNameW( filenameW, volumeW, buflen )))
FILE_name_WtoA( volumeW, -1, volumepathname, buflen );
HeapFree( GetProcessHeap(), 0, volumeW );
return ret;
}
/***********************************************************************
* GetVolumePathNameW (KERNEL32.@)
*
* This routine is intended to find the most basic path on the same filesystem
* for any particular path name. Since we can have very complicated drive/path
* relationships on Unix systems, due to symbolic links, the safest way to
* handle this is to start with the full path and work our way back folder by
* folder unil we find a folder on a different drive (or run out of folders).
*/
BOOL WINAPI GetVolumePathNameW(LPCWSTR filename, LPWSTR volumepathname, DWORD buflen)
{
static const WCHAR deviceprefixW[] = { '\\','?','?','\\',0 };
static const WCHAR ntprefixW[] = { '\\','\\','?','\\',0 };
WCHAR fallbackpathW[] = { 'C',':','\\',0 };
NTSTATUS status = STATUS_SUCCESS;
WCHAR *volumenameW = NULL, *c;
int pos, last_pos, stop_pos;
UNICODE_STRING nt_name;
ANSI_STRING unix_name;
BOOL first_run = TRUE;
dev_t search_dev = 0;
struct stat st;
TRACE("(%s, %p, %d)\n", debugstr_w(filename), volumepathname, buflen);
if (!filename || !volumepathname || !buflen)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
last_pos = pos = strlenW( filename );
/* allocate enough memory for searching the path (need room for a slash and a NULL terminator) */
if (!(volumenameW = HeapAlloc( GetProcessHeap(), 0, (pos + 2) * sizeof(WCHAR) )))
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
return FALSE;
}
strcpyW( volumenameW, filename );
stop_pos = 0;
/* stop searching slashes early for NT-type and nearly NT-type paths */
if (strncmpW(ntprefixW, filename, strlenW(ntprefixW)) == 0)
stop_pos = strlenW(ntprefixW)-1;
else if (strncmpW(ntprefixW, filename, 2) == 0)
stop_pos = 2;
do
{
volumenameW[pos+0] = '\\';
volumenameW[pos+1] = '\0';
if (!RtlDosPathNameToNtPathName_U( volumenameW, &nt_name, NULL, NULL ))
goto cleanup;
volumenameW[pos] = '\0';
status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, FALSE );
RtlFreeUnicodeString( &nt_name );
if (status == STATUS_SUCCESS)
{
if (stat( unix_name.Buffer, &st ) != 0)
{
RtlFreeAnsiString( &unix_name );
status = STATUS_OBJECT_NAME_INVALID;
goto cleanup;
}
if (first_run)
{
first_run = FALSE;
search_dev = st.st_dev;
}
else if (st.st_dev != search_dev)
{
/* folder is on a new filesystem, return the last folder */
RtlFreeAnsiString( &unix_name );
break;
}
}
RtlFreeAnsiString( &unix_name );
last_pos = pos;
c = strrchrW( volumenameW, '\\' );
if (c != NULL)
pos = c-volumenameW;
} while (c != NULL && pos > stop_pos);
if (status != STATUS_SUCCESS)
{
WCHAR cwdW[MAX_PATH];
/* the path was completely invalid */
if (filename[0] == '\\' && strncmpW(deviceprefixW, filename, strlenW(deviceprefixW)) != 0)
{
/* NT-style paths (that are not device paths) fail */
status = STATUS_OBJECT_NAME_INVALID;
goto cleanup;
}
/* DOS-style paths (anything not beginning with a slash) have fallback replies */
if (filename[1] == ':')
{
/* if the path is semi-sane (X:) then use the given drive letter (if it is mounted) */
fallbackpathW[0] = filename[0];
if (!isalphaW(filename[0]) || GetDriveTypeW( fallbackpathW ) == DRIVE_NO_ROOT_DIR)
{
status = STATUS_OBJECT_NAME_NOT_FOUND;
goto cleanup;
}
}
else if (GetCurrentDirectoryW( sizeof(cwdW)/sizeof(cwdW[0]), cwdW ))
{
/* if the path is completely bogus then revert to the drive of the working directory */
fallbackpathW[0] = cwdW[0];
}
else
{
status = STATUS_OBJECT_NAME_INVALID;
goto cleanup;
}
last_pos = strlenW(fallbackpathW) - 1; /* points to \\ */
filename = fallbackpathW;
status = STATUS_SUCCESS;
}
if (last_pos + 1 <= buflen)
{
WCHAR *p;
memcpy(volumepathname, filename, last_pos * sizeof(WCHAR));
if (last_pos + 2 <= buflen) volumepathname[last_pos++] = '\\';
volumepathname[last_pos] = '\0';
/* Normalize path */
for (p = volumepathname; *p; p++) if (*p == '/') *p = '\\';
/* DOS-style paths always return upper-case drive letters */
if (volumepathname[1] == ':')
volumepathname[0] = toupperW(volumepathname[0]);
TRACE("Successfully translated path %s to mount-point %s\n",
debugstr_w(filename), debugstr_w(volumepathname));
}
else
status = STATUS_NAME_TOO_LONG;
cleanup:
HeapFree( GetProcessHeap(), 0, volumenameW );
if (status != STATUS_SUCCESS)
SetLastError( RtlNtStatusToDosError(status) );
return (status == STATUS_SUCCESS);
}
/***********************************************************************
* GetVolumePathNamesForVolumeNameA (KERNEL32.@)
*/
BOOL WINAPI GetVolumePathNamesForVolumeNameA(LPCSTR volumename, LPSTR volumepathname, DWORD buflen, PDWORD returnlen)
{
BOOL ret;
WCHAR *volumenameW = NULL, *volumepathnameW;
if (volumename && !(volumenameW = FILE_name_AtoW( volumename, TRUE ))) return FALSE;
if (!(volumepathnameW = HeapAlloc( GetProcessHeap(), 0, buflen * sizeof(WCHAR) )))
{
HeapFree( GetProcessHeap(), 0, volumenameW );
return FALSE;
}
if ((ret = GetVolumePathNamesForVolumeNameW( volumenameW, volumepathnameW, buflen, returnlen )))
{
char *path = volumepathname;
const WCHAR *pathW = volumepathnameW;
while (*pathW)
{
int len = strlenW( pathW ) + 1;
FILE_name_WtoA( pathW, len, path, buflen );
buflen -= len;
pathW += len;
path += len;
}
path[0] = 0;
}
HeapFree( GetProcessHeap(), 0, volumenameW );
HeapFree( GetProcessHeap(), 0, volumepathnameW );
return ret;
}
static MOUNTMGR_MOUNT_POINTS *query_mount_points( HANDLE mgr, MOUNTMGR_MOUNT_POINT *input, DWORD insize )
{
MOUNTMGR_MOUNT_POINTS *output;
DWORD outsize = 1024;
DWORD br;
for (;;)
{
if (!(output = HeapAlloc( GetProcessHeap(), 0, outsize )))
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
return NULL;
}
if (DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, input, insize, output, outsize, &br, NULL )) break;
outsize = output->Size;
HeapFree( GetProcessHeap(), 0, output );
if (GetLastError() != ERROR_MORE_DATA) return NULL;
}
return output;
}
/***********************************************************************
* GetVolumePathNamesForVolumeNameW (KERNEL32.@)
*/
BOOL WINAPI GetVolumePathNamesForVolumeNameW(LPCWSTR volumename, LPWSTR volumepathname, DWORD buflen, PDWORD returnlen)
{
static const WCHAR dosdevicesW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\'};
HANDLE mgr;
DWORD len, size;
MOUNTMGR_MOUNT_POINT *spec;
MOUNTMGR_MOUNT_POINTS *link, *target = NULL;
WCHAR *name, *path;
BOOL ret = FALSE;
UINT i, j;
TRACE("%s, %p, %u, %p\n", debugstr_w(volumename), volumepathname, buflen, returnlen);
if (!volumename || (len = strlenW( volumename )) != 49)
{
SetLastError( ERROR_INVALID_NAME );
return FALSE;
}
mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0 );
if (mgr == INVALID_HANDLE_VALUE) return FALSE;
size = sizeof(*spec) + sizeof(WCHAR) * (len - 1); /* remove trailing backslash */
if (!(spec = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size ))) goto done;
spec->SymbolicLinkNameOffset = sizeof(*spec);
spec->SymbolicLinkNameLength = size - sizeof(*spec);
name = (WCHAR *)((char *)spec + spec->SymbolicLinkNameOffset);
memcpy( name, volumename, size - sizeof(*spec) );
name[1] = '?'; /* map \\?\ to \??\ */
target = query_mount_points( mgr, spec, size );
HeapFree( GetProcessHeap(), 0, spec );
if (!target)
{
goto done;
}
if (!target->NumberOfMountPoints)
{
SetLastError( ERROR_FILE_NOT_FOUND );
goto done;
}
len = 0;
path = volumepathname;
for (i = 0; i < target->NumberOfMountPoints; i++)
{
link = NULL;
if (target->MountPoints[i].DeviceNameOffset)
{
const WCHAR *device = (const WCHAR *)((const char *)target + target->MountPoints[i].DeviceNameOffset);
USHORT device_len = target->MountPoints[i].DeviceNameLength;
size = sizeof(*spec) + device_len;
if (!(spec = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size ))) goto done;
spec->DeviceNameOffset = sizeof(*spec);
spec->DeviceNameLength = device_len;
memcpy( (char *)spec + spec->DeviceNameOffset, device, device_len );
link = query_mount_points( mgr, spec, size );
HeapFree( GetProcessHeap(), 0, spec );
}
else if (target->MountPoints[i].UniqueIdOffset)
{
const WCHAR *id = (const WCHAR *)((const char *)target + target->MountPoints[i].UniqueIdOffset);
USHORT id_len = target->MountPoints[i].UniqueIdLength;
size = sizeof(*spec) + id_len;
if (!(spec = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size ))) goto done;
spec->UniqueIdOffset = sizeof(*spec);
spec->UniqueIdLength = id_len;
memcpy( (char *)spec + spec->UniqueIdOffset, id, id_len );
link = query_mount_points( mgr, spec, size );
HeapFree( GetProcessHeap(), 0, spec );
}
if (!link) continue;
for (j = 0; j < link->NumberOfMountPoints; j++)
{
const WCHAR *linkname;
if (!link->MountPoints[j].SymbolicLinkNameOffset) continue;
linkname = (const WCHAR *)((const char *)link + link->MountPoints[j].SymbolicLinkNameOffset);
if (link->MountPoints[j].SymbolicLinkNameLength == sizeof(dosdevicesW) + 2 * sizeof(WCHAR) &&
!memicmpW( linkname, dosdevicesW, sizeof(dosdevicesW) / sizeof(WCHAR) ))
{
len += 4;
if (volumepathname && len < buflen)
{
path[0] = linkname[sizeof(dosdevicesW) / sizeof(WCHAR)];
path[1] = ':';
path[2] = '\\';
path[3] = 0;
path += 4;
}
}
}
HeapFree( GetProcessHeap(), 0, link );
}
if (buflen <= len) SetLastError( ERROR_MORE_DATA );
else if (volumepathname)
{
volumepathname[len] = 0;
ret = TRUE;
}
if (returnlen) *returnlen = len + 1;
done:
HeapFree( GetProcessHeap(), 0, target );
CloseHandle( mgr );
return ret;
}
/***********************************************************************
* FindFirstVolumeA (KERNEL32.@)
*/
HANDLE WINAPI FindFirstVolumeA(LPSTR volume, DWORD len)
{
WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
HANDLE handle = FindFirstVolumeW( buffer, len );
if (handle != INVALID_HANDLE_VALUE)
{
if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL ))
{
FindVolumeClose( handle );
handle = INVALID_HANDLE_VALUE;
}
}
HeapFree( GetProcessHeap(), 0, buffer );
return handle;
}
/***********************************************************************
* FindFirstVolumeW (KERNEL32.@)
*/
HANDLE WINAPI FindFirstVolumeW( LPWSTR volume, DWORD len )
{
DWORD size = 1024;
DWORD br;
HANDLE mgr = CreateFileW( MOUNTMGR_DOS_DEVICE_NAME, 0, FILE_SHARE_READ|FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, 0 );
if (mgr == INVALID_HANDLE_VALUE) return INVALID_HANDLE_VALUE;
for (;;)
{
MOUNTMGR_MOUNT_POINT input;
MOUNTMGR_MOUNT_POINTS *output;
if (!(output = HeapAlloc( GetProcessHeap(), 0, size )))
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
break;
}
memset( &input, 0, sizeof(input) );
if (!DeviceIoControl( mgr, IOCTL_MOUNTMGR_QUERY_POINTS, &input, sizeof(input),
output, size, &br, NULL ))
{
if (GetLastError() != ERROR_MORE_DATA) break;
size = output->Size;
HeapFree( GetProcessHeap(), 0, output );
continue;
}
CloseHandle( mgr );
/* abuse the Size field to store the current index */
output->Size = 0;
if (!FindNextVolumeW( output, volume, len ))
{
HeapFree( GetProcessHeap(), 0, output );
return INVALID_HANDLE_VALUE;
}
return output;
}
CloseHandle( mgr );
return INVALID_HANDLE_VALUE;
}
/***********************************************************************
* FindNextVolumeA (KERNEL32.@)
*/
BOOL WINAPI FindNextVolumeA( HANDLE handle, LPSTR volume, DWORD len )
{
WCHAR *buffer = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
BOOL ret;
if ((ret = FindNextVolumeW( handle, buffer, len )))
{
if (!WideCharToMultiByte( CP_ACP, 0, buffer, -1, volume, len, NULL, NULL )) ret = FALSE;
}
HeapFree( GetProcessHeap(), 0, buffer );
return ret;
}
/***********************************************************************
* FindNextVolumeW (KERNEL32.@)
*/
BOOL WINAPI FindNextVolumeW( HANDLE handle, LPWSTR volume, DWORD len )
{
MOUNTMGR_MOUNT_POINTS *data = handle;
while (data->Size < data->NumberOfMountPoints)
{
static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',};
WCHAR *link = (WCHAR *)((char *)data + data->MountPoints[data->Size].SymbolicLinkNameOffset);
DWORD size = data->MountPoints[data->Size].SymbolicLinkNameLength;
data->Size++;
/* skip non-volumes */
if (size < sizeof(volumeW) || memcmp( link, volumeW, sizeof(volumeW) )) continue;
if (size + sizeof(WCHAR) >= len * sizeof(WCHAR))
{
SetLastError( ERROR_FILENAME_EXCED_RANGE );
return FALSE;
}
memcpy( volume, link, size );
volume[1] = '\\'; /* map \??\ to \\?\ */
volume[size / sizeof(WCHAR)] = '\\'; /* Windows appends a backslash */
volume[size / sizeof(WCHAR) + 1] = 0;
TRACE( "returning entry %u %s\n", data->Size - 1, debugstr_w(volume) );
return TRUE;
}
SetLastError( ERROR_NO_MORE_FILES );
return FALSE;
}
/***********************************************************************
* FindVolumeClose (KERNEL32.@)
*/
BOOL WINAPI FindVolumeClose(HANDLE handle)
{
return HeapFree( GetProcessHeap(), 0, handle );
}
/***********************************************************************
* FindFirstVolumeMountPointA (KERNEL32.@)
*/
HANDLE WINAPI FindFirstVolumeMountPointA(LPCSTR root, LPSTR mount_point, DWORD len)
{
FIXME("(%s, %p, %d), stub!\n", debugstr_a(root), mount_point, len);
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return INVALID_HANDLE_VALUE;
}
/***********************************************************************
* FindFirstVolumeMountPointW (KERNEL32.@)
*/
HANDLE WINAPI FindFirstVolumeMountPointW(LPCWSTR root, LPWSTR mount_point, DWORD len)
{
FIXME("(%s, %p, %d), stub!\n", debugstr_w(root), mount_point, len);
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return INVALID_HANDLE_VALUE;
}
/***********************************************************************
* FindVolumeMountPointClose (KERNEL32.@)
*/
BOOL WINAPI FindVolumeMountPointClose(HANDLE h)
{
FIXME("(%p), stub!\n", h);
return FALSE;
}
/***********************************************************************
* DeleteVolumeMountPointA (KERNEL32.@)
*/
BOOL WINAPI DeleteVolumeMountPointA(LPCSTR mountpoint)
{
FIXME("(%s), stub!\n", debugstr_a(mountpoint));
return FALSE;
}
/***********************************************************************
* DeleteVolumeMountPointW (KERNEL32.@)
*/
BOOL WINAPI DeleteVolumeMountPointW(LPCWSTR mountpoint)
{
FIXME("(%s), stub!\n", debugstr_w(mountpoint));
return FALSE;
}
/***********************************************************************
* SetVolumeMountPointA (KERNEL32.@)
*/
BOOL WINAPI SetVolumeMountPointA(LPCSTR path, LPCSTR volume)
{
FIXME("(%s, %s), stub!\n", debugstr_a(path), debugstr_a(volume));
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return FALSE;
}
/***********************************************************************
* SetVolumeMountPointW (KERNEL32.@)
*/
BOOL WINAPI SetVolumeMountPointW(LPCWSTR path, LPCWSTR volume)
{
FIXME("(%s, %s), stub!\n", debugstr_w(path), debugstr_w(volume));
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return FALSE;
}
/***********************************************************************
* GetVolumeInformationByHandleW (KERNEL32.@)
*/
BOOL WINAPI GetVolumeInformationByHandleW(HANDLE handle, WCHAR *volnamebuf, DWORD volnamesize, DWORD *volserial, DWORD *maxlength, DWORD *flags, WCHAR *fsnamebuf, DWORD fsnamesize)
{
FIXME("%p %p %d %p %p %p %p %d\n", handle, volnamebuf, volnamesize, volserial, maxlength, flags, fsnamebuf, fsnamesize);
if(volnamebuf && volnamesize)
*volnamebuf = 0;
if(volserial)
*volserial = 0;
if(maxlength)
*maxlength = 0;
if(flags)
*flags = 0;
if(fsnamebuf && fsnamesize)
*fsnamebuf = 0;
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return FALSE;
}
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