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Sweden-Number/dlls/kernel/volume.c

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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "winnls.h"
#include "winternl.h"
#include "ntstatus.h"
#include "winioctl.h"
#include "ntddstor.h"
#include "ntddcdrm.h"
#include "kernel_private.h"
#include "wine/library.h"
#include "wine/unicode.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(volume);
#define SUPERBLOCK_SIZE 2048
#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
};
static const WCHAR drive_types[][8] =
{
{ 0 }, /* DRIVE_UNKNOWN */
{ 0 }, /* DRIVE_NO_ROOT_DIR */
{'f','l','o','p','p','y',0}, /* DRIVE_REMOVABLE */
{'h','d',0}, /* DRIVE_FIXED */
{'n','e','t','w','o','r','k',0}, /* DRIVE_REMOTE */
{'c','d','r','o','m',0}, /* DRIVE_CDROM */
{'r','a','m','d','i','s','k',0} /* DRIVE_RAMDISK */
};
/* read a Unix symlink; returned buffer must be freed by caller */
static char *read_symlink( const char *path )
{
char *buffer;
int ret, size = 128;
for (;;)
{
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
return 0;
}
ret = readlink( path, buffer, size );
if (ret == -1)
{
FILE_SetDosError();
HeapFree( GetProcessHeap(), 0, buffer );
return 0;
}
if (ret != size)
{
buffer[ret] = 0;
return buffer;
}
HeapFree( GetProcessHeap(), 0, buffer );
size *= 2;
}
}
/* 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;
}
/* 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, 0, &attr, &io, 0,
FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
RtlFreeUnicodeString( &nt_name );
if (status != STATUS_SUCCESS)
{
SetLastError( RtlNtStatusToDosError(status) );
return FALSE;
}
return TRUE;
}
/* fetch the type of a drive from the registry */
static UINT get_registry_drive_type( const WCHAR *root )
{
static const WCHAR drive_types_keyW[] = {'M','a','c','h','i','n','e','\\',
'S','o','f','t','w','a','r','e','\\',
'W','i','n','e','\\',
'D','r','i','v','e','s',0 };
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nameW;
HKEY hkey;
DWORD dummy;
UINT ret = DRIVE_UNKNOWN;
char tmp[32 + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
WCHAR driveW[] = {'A',':',0};
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = &nameW;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
RtlInitUnicodeString( &nameW, drive_types_keyW );
if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) return DRIVE_UNKNOWN;
if (root) driveW[0] = root[0];
else
{
WCHAR path[MAX_PATH];
GetCurrentDirectoryW( MAX_PATH, path );
driveW[0] = path[0];
}
RtlInitUnicodeString( &nameW, driveW );
if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
{
int i;
WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
for (i = 0; i < sizeof(drive_types)/sizeof(drive_types[0]); i++)
{
if (!strcmpiW( data, drive_types[i] ))
{
ret = i;
break;
}
}
}
NtClose( hkey );
return ret;
}
/* create symlinks for the DOS drives; helper for VOLUME_CreateDevices */
static int create_drives( int devices_only )
{
static const WCHAR PathW[] = {'P','a','t','h',0};
static const WCHAR DeviceW[] = {'D','e','v','i','c','e',0};
WCHAR driveW[] = {'M','a','c','h','i','n','e','\\','S','o','f','t','w','a','r','e','\\',
'W','i','n','e','\\','W','i','n','e','\\',
'C','o','n','f','i','g','\\','D','r','i','v','e',' ','A',0};
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nameW;
char tmp[1024*sizeof(WCHAR) + sizeof(KEY_VALUE_PARTIAL_INFORMATION)];
char dest[1024];
WCHAR *p, name[3];
HKEY hkey;
DWORD dummy;
int i, count = 0;
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = &nameW;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
/* create symlinks for the drive roots */
if (!devices_only) for (i = 0; i < 26; i++)
{
RtlInitUnicodeString( &nameW, driveW );
nameW.Buffer[(nameW.Length / sizeof(WCHAR)) - 1] = 'A' + i;
if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) continue;
RtlInitUnicodeString( &nameW, PathW );
if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
{
WCHAR path[1024];
WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
ExpandEnvironmentStringsW( data, path, sizeof(path)/sizeof(WCHAR) );
p = path + strlenW(path) - 1;
while ((p > path) && (*p == '/')) *p-- = '\0';
name[0] = 'a' + i;
name[1] = ':';
name[2] = 0;
if (path[0] != '/')
{
/* relative paths are relative to config dir */
memmove( path + 3, path, (strlenW(path) + 1) * sizeof(WCHAR) );
path[0] = '.';
path[1] = '.';
path[2] = '/';
}
if (DefineDosDeviceW( DDD_RAW_TARGET_PATH, name, path ))
{
WideCharToMultiByte(CP_UNIXCP, 0, path, -1, dest, sizeof(dest), NULL, NULL);
MESSAGE( "Created symlink %s/dosdevices/%c: -> %s\n",
wine_get_config_dir(), 'a' + i, dest );
count++;
}
}
NtClose( hkey );
}
/* create symlinks for the drive devices */
for (i = 0; i < 26; i++)
{
RtlInitUnicodeString( &nameW, driveW );
nameW.Buffer[(nameW.Length / sizeof(WCHAR)) - 1] = 'A' + i;
if (NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ) != STATUS_SUCCESS) continue;
RtlInitUnicodeString( &nameW, DeviceW );
if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, tmp, sizeof(tmp), &dummy ))
{
char *path, *p;
WCHAR devname[] = {'A',':',':',0 };
WCHAR *data = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
WideCharToMultiByte(CP_UNIXCP, 0, data, -1, dest, sizeof(dest), NULL, NULL);
path = get_dos_device_path( devname );
p = path + strlen(path);
p[-3] = 'a' + i;
if (!symlink( dest, path ))
{
MESSAGE( "Created symlink %s/dosdevices/%c:: -> %s\n",
wine_get_config_dir(), 'a' + i, dest );
count++;
}
HeapFree( GetProcessHeap(), 0, path );
}
NtClose( hkey );
}
return count;
}
/***********************************************************************
* VOLUME_CreateDevices
*
* Create the device files for the new device naming scheme.
* Should go away after a transition period.
*/
void VOLUME_CreateDevices(void)
{
const char *config_dir = wine_get_config_dir();
char *buffer;
int i, count = 0;
if (!(buffer = HeapAlloc( GetProcessHeap(), 0,
strlen(config_dir) + sizeof("/dosdevices/a::") )))
return;
strcpy( buffer, config_dir );
strcat( buffer, "/dosdevices" );
if (!mkdir( buffer, 0777 )) /* we created it, so now create the devices */
{
HKEY hkey;
DWORD dummy;
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nameW;
WCHAR *p, *devnameW;
char tmp[128];
WCHAR com[5] = {'C','O','M','1',0};
WCHAR lpt[5] = {'L','P','T','1',0};
static const WCHAR serialportsW[] = {'M','a','c','h','i','n','e','\\',
'S','o','f','t','w','a','r','e','\\',
'W','i','n','e','\\','W','i','n','e','\\',
'C','o','n','f','i','g','\\',
'S','e','r','i','a','l','P','o','r','t','s',0};
static const WCHAR parallelportsW[] = {'M','a','c','h','i','n','e','\\',
'S','o','f','t','w','a','r','e','\\',
'W','i','n','e','\\','W','i','n','e','\\',
'C','o','n','f','i','g','\\',
'P','a','r','a','l','l','e','l','P','o','r','t','s',0};
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = &nameW;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
RtlInitUnicodeString( &nameW, serialportsW );
if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
{
RtlInitUnicodeString( &nameW, com );
for (i = 1; i <= 9; i++)
{
com[3] = '0' + i;
if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation,
tmp, sizeof(tmp), &dummy ))
{
devnameW = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
if ((p = strchrW( devnameW, ',' ))) *p = 0;
if (DefineDosDeviceW( DDD_RAW_TARGET_PATH, com, devnameW ))
{
char devname[32];
WideCharToMultiByte(CP_UNIXCP, 0, devnameW, -1,
devname, sizeof(devname), NULL, NULL);
MESSAGE( "Created symlink %s/dosdevices/com%d -> %s\n", config_dir, i, devname );
count++;
}
}
}
NtClose( hkey );
}
RtlInitUnicodeString( &nameW, parallelportsW );
if (!NtOpenKey( &hkey, KEY_ALL_ACCESS, &attr ))
{
RtlInitUnicodeString( &nameW, lpt );
for (i = 1; i <= 9; i++)
{
lpt[3] = '0' + i;
if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation,
tmp, sizeof(tmp), &dummy ))
{
devnameW = (WCHAR *)((KEY_VALUE_PARTIAL_INFORMATION *)tmp)->Data;
if ((p = strchrW( devnameW, ',' ))) *p = 0;
if (DefineDosDeviceW( DDD_RAW_TARGET_PATH, lpt, devnameW ))
{
char devname[32];
WideCharToMultiByte(CP_UNIXCP, 0, devnameW, -1,
devname, sizeof(devname), NULL, NULL);
MESSAGE( "Created symlink %s/dosdevices/lpt%d -> %s\n", config_dir, i, devname );
count++;
}
}
}
NtClose( hkey );
}
count += create_drives( FALSE );
}
else
{
struct stat st;
int i;
/* it is possible that the serial/parallel devices have been created but */
/* not the drives; check for at least one drive symlink to catch that case */
strcat( buffer, "/a:" );
for (i = 0; i < 26; i++)
{
buffer[strlen(buffer)-2] = 'a' + i;
if (!lstat( buffer, &st )) break;
}
if (i == 26) count += create_drives( FALSE );
else
{
strcat( buffer, ":" );
for (i = 0; i < 26; i++)
{
buffer[strlen(buffer)-3] = 'a' + i;
if (!lstat( buffer, &st )) break;
}
if (i == 26) count += create_drives( TRUE );
}
}
if (count)
MESSAGE( "\nYou can now remove the [SerialPorts], [ParallelPorts], and [Drive] sections\n"
"in your configuration file, they are replaced by the above symlinks.\n\n" );
HeapFree( GetProcessHeap(), 0, buffer );
}
/******************************************************************
* VOLUME_FindCdRomDataBestVoldesc
*/
static DWORD VOLUME_FindCdRomDataBestVoldesc( HANDLE handle )
{
BYTE cur_vd_type, max_vd_type = 0;
BYTE buffer[16];
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 ) ||
size != SUPERBLOCK_SIZE)
return FS_ERROR;
if (buff[0] == 0xE9 || (buff[0] == 0xEB && buff[2] == 0x90))
{
/* guess which type of FAT we have */
unsigned int sz, nsect, nclust;
sz = GETWORD(buff, 0x16);
if (!sz) sz = GETLONG(buff, 0x24);
nsect = GETWORD(buff, 0x13);
if (!nsect) nsect = GETLONG(buff, 0x20);
nsect -= GETWORD(buff, 0x0e) + buff[0x10] * sz +
(GETWORD(buff, 0x11) * 32 + (GETWORD(buff, 0x0b) - 1)) / GETWORD(buff, 0x0b);
nclust = nsect / buff[0x0d];
if (nclust < 65525)
{
if (buff[0x26] == 0x29 && !memcmp(buff+0x36, "FAT", 3))
{
/* FIXME: do really all FAT have their name beginning with
* "FAT" ? (At least FAT12, FAT16 and FAT32 have :)
*/
return FS_FAT1216;
}
}
else if (!memcmp(buff+0x52, "FAT", 3)) return FS_FAT32;
}
return FS_UNKNOWN;
}
/***********************************************************************
* VOLUME_ReadCDSuperblock
*/
static enum fs_type VOLUME_ReadCDSuperblock( HANDLE handle, BYTE *buff )
{
DWORD size, offs = VOLUME_FindCdRomDataBestVoldesc( handle );
if (!offs) return FS_UNKNOWN;
if (SetFilePointer( handle, offs, NULL, FILE_BEGIN ) != offs ||
!ReadFile( handle, buff, SUPERBLOCK_SIZE, &size, NULL ) ||
size != SUPERBLOCK_SIZE)
return FS_ERROR;
/* check for iso9660 present */
if (!memcmp(&buff[1], "CD001", 5)) return FS_ISO9660;
return FS_UNKNOWN;
}
/**************************************************************************
* VOLUME_GetSuperblockLabel
*/
static void VOLUME_GetSuperblockLabel( enum fs_type type, const BYTE *superblock,
WCHAR *label, DWORD len )
{
const BYTE *label_ptr = NULL;
DWORD label_len;
switch(type)
{
case FS_ERROR:
case FS_UNKNOWN:
label_len = 0;
break;
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 */
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;
}
}
if (label_len) RtlMultiByteToUnicodeN( label, (len-1) * sizeof(WCHAR),
&label_len, label_ptr, label_len );
label_len /= sizeof(WCHAR);
label[label_len] = 0;
while (label_len && label[label_len-1] == ' ') label[--label_len] = 0;
}
/**************************************************************************
* VOLUME_SetSuperblockLabel
*/
static BOOL VOLUME_SetSuperblockLabel( enum fs_type type, HANDLE handle, const WCHAR *label )
{
BYTE label_data[11];
DWORD offset, len;
switch(type)
{
case FS_FAT1216:
offset = 0x2b;
break;
case FS_FAT32:
offset = 0x47;
break;
default:
SetLastError( ERROR_ACCESS_DENIED );
return FALSE;
}
RtlUnicodeToMultiByteN( label_data, sizeof(label_data), &len,
label, strlenW(label) * sizeof(WCHAR) );
if (len < sizeof(label_data))
memset( label_data + len, ' ', sizeof(label_data) - len );
return (SetFilePointer( handle, offset, NULL, FILE_BEGIN ) == offset &&
WriteFile( handle, label_data, sizeof(label_data), &len, NULL ));
}
/**************************************************************************
* VOLUME_GetSuperblockSerial
*/
static DWORD VOLUME_GetSuperblockSerial( enum fs_type type, const BYTE *superblock )
{
switch(type)
{
case FS_ERROR:
case FS_UNKNOWN:
break;
case FS_FAT1216:
return GETLONG( superblock, 0x27 );
case FS_FAT32:
return GETLONG( superblock, 0x33 );
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)
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 ntfsW[] = {'N','T','F','S',0};
static const WCHAR cdfsW[] = {'C','D','F','S',0};
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];
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(device) );
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 );
}
CloseHandle( handle );
TRACE( "%s: found fs type %d\n", debugstr_w(device), type );
if (type == FS_ERROR) return FALSE;
if (label && label_len) VOLUME_GetSuperblockLabel( type, superblock, label, label_len );
if (serial) *serial = VOLUME_GetSuperblockSerial( type, superblock );
goto fill_fs_info;
}
else TRACE( "cannot open device %s: err %ld\n", debugstr_w(device), GetLastError() );
/* 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 );
return FALSE;
case DRIVE_REMOVABLE:
case DRIVE_FIXED:
case DRIVE_REMOTE:
case DRIVE_RAMDISK:
type = FS_UNKNOWN;
break;
case DRIVE_CDROM:
type = FS_ISO9660;
break;
}
if (label && label_len)
{
WCHAR labelW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','l','a','b','e','l',0};
labelW[0] = device[4];
handle = CreateFileW( labelW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
OPEN_EXISTING, 0, 0 );
if (handle != INVALID_HANDLE_VALUE)
{
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, label_len ))
label[label_len-1] = 0;
}
else label[0] = 0;
}
if (serial)
{
WCHAR serialW[] = {'A',':','\\','.','w','i','n','d','o','w','s','-','s','e','r','i','a','l',0};
serialW[0] = device[4];
handle = CreateFileW( serialW, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
OPEN_EXISTING, 0, 0 );
if (handle != INVALID_HANDLE_VALUE)
{
char buffer[32];
DWORD size;
if (!ReadFile( handle, buffer, sizeof(buffer)-1, &size, NULL )) size = 0;
CloseHandle( handle );
buffer[size] = 0;
*serial = strtoul( buffer, NULL, 16 );
}
else *serial = 0;
}
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_FAT1216:
case FS_FAT32:
if (fsname) lstrcpynW( fsname, fatW, 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;
break;
}
return TRUE;
}
/***********************************************************************
* 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 );
}
if (labelW) HeapFree( GetProcessHeap(), 0, labelW );
if (fsnameW) 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|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, 0 );
if (handle == INVALID_HANDLE_VALUE)
{
/* try read-only */
handle = CreateFileW( device, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, 0 );
if (handle != INVALID_HANDLE_VALUE)
{
/* device can be read but not written, return error */
CloseHandle( handle );
SetLastError( ERROR_ACCESS_DENIED );
return FALSE;
}
}
if (handle != INVALID_HANDLE_VALUE)
{
BYTE superblock[SUPERBLOCK_SIZE];
BOOL ret;
type = VOLUME_ReadFATSuperblock( handle, superblock );
ret = VOLUME_SetSuperblockLabel( type, handle, label );
CloseHandle( handle );
return ret;
}
else
{
TRACE( "cannot open device %s: err %ld\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];
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), NULL, NULL ))
buffer[sizeof(buffer)-1] = 0;
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 );
if (volnameW) HeapFree( GetProcessHeap(), 0, volnameW );
return ret;
}
/***********************************************************************
* GetVolumeNameForVolumeMountPointW (KERNEL32.@)
*/
BOOL WINAPI GetVolumeNameForVolumeMountPointW(LPCWSTR str, LPWSTR dst, DWORD size)
{
FIXME("(%s, %p, %lx): stub\n", debugstr_w(str), dst, size);
return 0;
}
/***********************************************************************
* DefineDosDeviceW (KERNEL32.@)
*/
BOOL WINAPI DefineDosDeviceW( DWORD flags, LPCWSTR devname, LPCWSTR targetpath )
{
DWORD len, dosdev;
BOOL ret = FALSE;
char *path = NULL, *target, *p;
if (!(flags & DDD_REMOVE_DEFINITION))
{
if (!(flags & DDD_RAW_TARGET_PATH))
{
FIXME( "(0x%08lx,%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 );
}
if (target) 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);
if (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 auxW[] = {'A','U','X',0};
static const WCHAR nulW[] = {'N','U','L',0};
static const WCHAR prnW[] = {'P','R','N',0};
static const WCHAR comW[] = {'C','O','M',0};
static const WCHAR lptW[] = {'L','P','T',0};
static const WCHAR rootW[] = {'A',':','\\',0};
static const WCHAR com0W[] = {'\\','?','?','\\','C','O','M','0',0};
static const WCHAR com1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','C','O','M','1',0,0};
static const WCHAR lpt1W[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','L','P','T','1',0,0};
UNICODE_STRING nt_name;
ANSI_STRING unix_name;
WCHAR nt_buffer[10];
NTSTATUS status;
if (!bufsize)
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
return 0;
}
if (devname)
{
WCHAR *p, name[5];
char *path, *link;
DWORD dosdev, ret = 0;
if ((dosdev = RtlIsDosDeviceName_U( devname )))
{
memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
}
else if (devname[0] && devname[1] == ':' && !devname[2])
{
memcpy( name, devname, 3 * sizeof(WCHAR) );
}
else
{
SetLastError( ERROR_BAD_PATHNAME );
return 0;
}
if (!(path = get_dos_device_path( name ))) return 0;
link = read_symlink( path );
HeapFree( GetProcessHeap(), 0, path );
if (link)
{
ret = MultiByteToWideChar( CP_UNIXCP, 0, link, -1, target, bufsize );
HeapFree( GetProcessHeap(), 0, link );
}
else if (dosdev) /* look for device defaults */
{
if (!strcmpiW( name, auxW ))
{
if (bufsize >= sizeof(com1W)/sizeof(WCHAR))
{
memcpy( target, com1W, sizeof(com1W) );
ret = sizeof(com1W)/sizeof(WCHAR);
}
else SetLastError( ERROR_INSUFFICIENT_BUFFER );
return ret;
}
if (!strcmpiW( name, prnW ))
{
if (bufsize >= sizeof(lpt1W)/sizeof(WCHAR))
{
memcpy( target, lpt1W, sizeof(lpt1W) );
ret = sizeof(lpt1W)/sizeof(WCHAR);
}
else SetLastError( ERROR_INSUFFICIENT_BUFFER );
return ret;
}
nt_buffer[0] = '\\';
nt_buffer[1] = '?';
nt_buffer[2] = '?';
nt_buffer[3] = '\\';
strcpyW( nt_buffer + 4, name );
RtlInitUnicodeString( &nt_name, nt_buffer );
status = wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE );
if (status) SetLastError( RtlNtStatusToDosError(status) );
else
{
ret = MultiByteToWideChar( CP_UNIXCP, 0, unix_name.Buffer, -1, target, bufsize );
RtlFreeAnsiString( &unix_name );
}
}
if (ret)
{
if (ret < bufsize) target[ret++] = 0; /* add an extra null */
for (p = target; *p; p++) if (*p == '/') *p = '\\';
}
return ret;
}
else /* return a list of all devices */
{
WCHAR *p = target;
int i;
if (bufsize <= (sizeof(auxW)+sizeof(nulW)+sizeof(prnW))/sizeof(WCHAR))
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
return 0;
}
memcpy( p, auxW, sizeof(auxW) );
p += sizeof(auxW) / sizeof(WCHAR);
memcpy( p, nulW, sizeof(nulW) );
p += sizeof(nulW) / sizeof(WCHAR);
memcpy( p, prnW, sizeof(prnW) );
p += sizeof(prnW) / sizeof(WCHAR);
strcpyW( nt_buffer, com0W );
RtlInitUnicodeString( &nt_name, nt_buffer );
for (i = 1; i <= 9; i++)
{
nt_buffer[7] = '0' + i;
if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
{
RtlFreeAnsiString( &unix_name );
if (p + 5 >= target + bufsize)
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
return 0;
}
strcpyW( p, comW );
p[3] = '0' + i;
p[4] = 0;
p += 5;
}
}
strcpyW( nt_buffer + 4, lptW );
for (i = 1; i <= 9; i++)
{
nt_buffer[7] = '0' + i;
if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
{
RtlFreeAnsiString( &unix_name );
if (p + 5 >= target + bufsize)
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
return 0;
}
strcpyW( p, lptW );
p[3] = '0' + i;
p[4] = 0;
p += 5;
}
}
strcpyW( nt_buffer + 4, rootW );
RtlInitUnicodeString( &nt_name, nt_buffer );
for (i = 0; i < 26; i++)
{
nt_buffer[4] = 'a' + i;
if (!wine_nt_to_unix_file_name( &nt_name, &unix_name, FILE_OPEN, TRUE ))
{
RtlFreeAnsiString( &unix_name );
if (p + 3 >= target + bufsize)
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
return 0;
}
*p++ = 'A' + i;
*p++ = ':';
*p++ = 0;
}
}
*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;
LPWSTR targetW;
if (!(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)
{
const char *config_dir = wine_get_config_dir();
struct stat st;
char *buffer, *dev;
DWORD ret = 0;
int i;
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
return 0;
}
strcpy( buffer, config_dir );
strcat( buffer, "/dosdevices/a:" );
dev = buffer + strlen(buffer) - 2;
for (i = 0; i < 26; i++)
{
*dev = 'a' + i;
if (!stat( buffer, &st )) ret |= (1 << i);
}
HeapFree( GetProcessHeap(), 0, buffer );
return ret;
}
/***********************************************************************
* 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 can not 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 )) 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 if ((ret = get_registry_drive_type( root )) == DRIVE_UNKNOWN)
{
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 ret = DRIVE_FIXED;
break;
default:
ret = DRIVE_UNKNOWN;
break;
}
}
TRACE( "%s -> %d\n", debugstr_w(root), ret );
return ret;
}
/***********************************************************************
* GetDriveTypeA (KERNEL32.@)
*/
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.@)
*/
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;
/* cap the size and available at 2GB as per specs */
if (info.AvailableAllocationUnits.QuadPart * units > 0x7fffffff)
info.AvailableAllocationUnits.QuadPart = 0x7fffffff / units;
if (info.TotalAllocationUnits.QuadPart * units > 0x7fffffff)
info.TotalAllocationUnits.QuadPart = 0x7fffffff / units;
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;
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 );
}
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