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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 <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 "ddk/wdm.h"
#include "kernelbase.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 */
};
/* 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 )
{
UNICODE_STRING nt_name;
OBJECT_ATTRIBUTES attr;
IO_STATUS_BLOCK io;
NTSTATUS status;
if (!root) root = L"\\";
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 );
return set_ntstatus( status );
}
/* 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;
}
/***********************************************************************
* GetVolumeInformationW (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH GetVolumeInformationW( LPCWSTR root, LPWSTR label, DWORD label_len,
DWORD *serial, DWORD *filename_len, DWORD *flags,
LPWSTR fsname, DWORD fsname_len )
{
HANDLE handle;
NTSTATUS status;
UNICODE_STRING nt_name;
IO_STATUS_BLOCK io;
OBJECT_ATTRIBUTES attr;
unsigned int i;
BOOL ret = FALSE;
if (!root) root = L"\\";
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 */
for (i = 4; i < nt_name.Length / sizeof(WCHAR); i++) if (nt_name.Buffer[i] == '\\') break;
if (i != nt_name.Length / sizeof(WCHAR) - 1)
{
/* check if root contains an explicit subdir */
if (root[0] && root[1] == ':') root += 2;
while (*root == '\\') root++;
if (wcschr( root, '\\' ))
SetLastError( ERROR_DIR_NOT_ROOT );
else
SetLastError( ERROR_INVALID_NAME );
goto done;
}
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)
{
TRACE( "cannot open device %s: %lx\n", debugstr_w(nt_name.Buffer), status );
if (status == STATUS_ACCESS_DENIED)
MESSAGE( "wine: Read access denied for device %s, FS volume label and serial are not available.\n", debugstr_w(nt_name.Buffer) );
status = NtOpenFile( &handle, SYNCHRONIZE, &attr, &io, 0,
FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT );
}
if (!set_ntstatus( status )) goto done;
ret = GetVolumeInformationByHandleW( handle, label, label_len, serial, filename_len, flags,
fsname, fsname_len );
NtClose( handle );
done:
RtlFreeUnicodeString( &nt_name );
return ret;
}
/***********************************************************************
* GetVolumeInformationA (kernelbase.@)
*/
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;
}
/***********************************************************************
* GetVolumeNameForVolumeMountPointW (kernelbase.@)
*/
BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWORD size )
{
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, %lx)\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, L"\\DosDevices\\" );
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)) / sizeof(WCHAR) );
TRACE("read_nt_symlink got stat=%lx, 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 %ld 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 (!wcsncmp( p, L"\\??\\Volume{", wcslen(L"\\??\\Volume{") ))
{
/* 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, L"\\" );
/* 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 (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH DefineDosDeviceW( DWORD flags, const WCHAR *device, const WCHAR *target )
{
WCHAR link_name[15] = L"\\DosDevices\\";
UNICODE_STRING nt_name, nt_target;
OBJECT_ATTRIBUTES attr;
NTSTATUS status;
HANDLE handle;
TRACE("%#lx, %s, %s\n", flags, debugstr_w(device), debugstr_w(target));
if (flags & ~(DDD_RAW_TARGET_PATH | DDD_REMOVE_DEFINITION))
FIXME("Ignoring flags %#lx.\n", flags & ~(DDD_RAW_TARGET_PATH | DDD_REMOVE_DEFINITION));
lstrcatW( link_name, device );
RtlInitUnicodeString( &nt_name, link_name );
InitializeObjectAttributes( &attr, &nt_name, OBJ_CASE_INSENSITIVE | OBJ_PERMANENT, 0, NULL );
if (flags & DDD_REMOVE_DEFINITION)
{
if (!set_ntstatus( NtOpenSymbolicLinkObject( &handle, 0, &attr ) ))
return FALSE;
status = NtMakeTemporaryObject( handle );
NtClose( handle );
return set_ntstatus( status );
}
if (!(flags & DDD_RAW_TARGET_PATH))
{
if (!RtlDosPathNameToNtPathName_U( target, &nt_target, NULL, NULL))
{
SetLastError( ERROR_PATH_NOT_FOUND );
return FALSE;
}
}
else
RtlInitUnicodeString( &nt_target, target );
if (!(status = NtCreateSymbolicLinkObject( &handle, SYMBOLIC_LINK_ALL_ACCESS, &attr, &nt_target )))
NtClose( handle );
return set_ntstatus( status );
}
/***********************************************************************
* QueryDosDeviceW (kernelbase.@)
*
* returns array of strings terminated by \0, terminated by \0
*/
DWORD WINAPI QueryDosDeviceW( LPCWSTR devname, LPWSTR target, DWORD bufsize )
{
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(L"\\DosDevices\\") + lstrlenW(devname)*sizeof(WCHAR) )))
{
SetLastError( ERROR_OUTOFMEMORY );
return 0;
}
lstrcpyW( buffer, L"\\DosDevices\\" );
lstrcatW( buffer, devname );
status = read_nt_symlink( buffer, target, bufsize );
HeapFree( GetProcessHeap(), 0, buffer );
if (!set_ntstatus( status )) return 0;
ret = lstrlenW( 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, L"\\DosDevices\\" );
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;
}
}
/***********************************************************************
* GetLogicalDrives (kernelbase.@)
*/
DWORD WINAPI DECLSPEC_HOTPATCH GetLogicalDrives(void)
{
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nt_name;
DWORD bitmask = 0;
NTSTATUS status;
HANDLE handle;
RtlInitUnicodeString( &nt_name, L"\\DosDevices\\" );
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;
}
/***********************************************************************
* GetLogicalDriveStringsW (kernelbase.@)
*/
UINT WINAPI DECLSPEC_HOTPATCH 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 (kernelbase.@)
*/
UINT WINAPI DECLSPEC_HOTPATCH GetDriveTypeW( LPCWSTR root )
{
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 (kernelbase.@)
*/
UINT WINAPI DECLSPEC_HOTPATCH GetDriveTypeA( LPCSTR root )
{
WCHAR *rootW = NULL;
if (root && !(rootW = file_name_AtoW( root, FALSE ))) return DRIVE_NO_ROOT_DIR;
return GetDriveTypeW( rootW );
}
/***********************************************************************
* GetDiskFreeSpaceExW (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH 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 (!set_ntstatus( 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 (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH 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 (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH 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 (!set_ntstatus( 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("%#08lx, %#08lx, %#08lx, %#08lx\n", info.SectorsPerAllocationUnit, info.BytesPerSector,
info.AvailableAllocationUnits.u.LowPart, info.TotalAllocationUnits.u.LowPart);
return TRUE;
}
/***********************************************************************
* GetDiskFreeSpaceA (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH 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 );
}
static BOOL is_dos_path( const UNICODE_STRING *path )
{
static const WCHAR global_prefix[4] = {'\\','?','?','\\'};
return path->Length >= 7 * sizeof(WCHAR)
&& !memcmp(path->Buffer, global_prefix, sizeof(global_prefix))
&& path->Buffer[5] == ':' && path->Buffer[6] == '\\';
}
/* resolve all symlinks in a path in-place; return FALSE if allocation failed */
static BOOL resolve_symlink( UNICODE_STRING *path )
{
OBJECT_NAME_INFORMATION *info;
OBJECT_ATTRIBUTES attr;
IO_STATUS_BLOCK io;
NTSTATUS status;
HANDLE file;
ULONG size;
InitializeObjectAttributes( &attr, path, OBJ_CASE_INSENSITIVE, 0, NULL );
if (NtOpenFile( &file, SYNCHRONIZE, &attr, &io, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT ))
return TRUE;
if (NtQueryObject( file, ObjectNameInformation, NULL, 0, &size ) != STATUS_INFO_LENGTH_MISMATCH)
{
NtClose( file );
return TRUE;
}
if (!(info = HeapAlloc( GetProcessHeap(), 0, size )))
{
NtClose( file );
return FALSE;
}
status = NtQueryObject( file, ObjectNameInformation, info, size, NULL );
NtClose( file );
if (status)
return TRUE;
RtlFreeUnicodeString( path );
status = RtlDuplicateUnicodeString( 0, &info->Name, path );
HeapFree( GetProcessHeap(), 0, info );
return !status;
}
/***********************************************************************
* GetVolumePathNameW (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH GetVolumePathNameW( const WCHAR *path, WCHAR *volume_path, DWORD length )
{
FILE_ATTRIBUTE_TAG_INFORMATION attr_info;
FILE_BASIC_INFORMATION basic_info;
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nt_name;
NTSTATUS status;
if (path && !wcsncmp(path, L"\\??\\", 4))
{
WCHAR current_drive[MAX_PATH];
GetCurrentDirectoryW( ARRAY_SIZE(current_drive), current_drive );
if (length >= 3)
{
WCHAR ret_path[4] = {current_drive[0], ':', '\\', 0};
lstrcpynW( volume_path, ret_path, length );
return TRUE;
}
SetLastError( ERROR_FILENAME_EXCED_RANGE );
return FALSE;
}
if (!volume_path || !length || !RtlDosPathNameToNtPathName_U( path, &nt_name, NULL, NULL ))
{
SetLastError( ERROR_INVALID_PARAMETER );
return FALSE;
}
if (!is_dos_path( &nt_name ))
{
RtlFreeUnicodeString( &nt_name );
WARN("invalid path %s\n", debugstr_w(path));
SetLastError( ERROR_INVALID_NAME );
return FALSE;
}
InitializeObjectAttributes( &attr, &nt_name, OBJ_CASE_INSENSITIVE, 0, NULL );
while (nt_name.Length > 7 * sizeof(WCHAR))
{
IO_STATUS_BLOCK io;
HANDLE file;
if (!NtQueryAttributesFile( &attr, &basic_info )
&& (basic_info.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
&& (basic_info.FileAttributes & FILE_ATTRIBUTE_DIRECTORY)
&& !NtOpenFile( &file, SYNCHRONIZE | FILE_READ_ATTRIBUTES, &attr, &io,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
FILE_OPEN_REPARSE_POINT | FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT ))
{
status = NtQueryInformationFile( file, &io, &attr_info,
sizeof(attr_info), FileAttributeTagInformation );
NtClose( file );
if (!status)
{
if (attr_info.ReparseTag == IO_REPARSE_TAG_MOUNT_POINT)
break;
if (!resolve_symlink( &nt_name ))
{
SetLastError( ERROR_OUTOFMEMORY );
return FALSE;
}
}
}
if (nt_name.Buffer[(nt_name.Length / sizeof(WCHAR)) - 1] == '\\')
nt_name.Length -= sizeof(WCHAR);
while (nt_name.Length && nt_name.Buffer[(nt_name.Length / sizeof(WCHAR)) - 1] != '\\')
nt_name.Length -= sizeof(WCHAR);
}
nt_name.Buffer[nt_name.Length / sizeof(WCHAR)] = 0;
if (NtQueryAttributesFile( &attr, &basic_info ))
{
RtlFreeUnicodeString( &nt_name );
WARN("nonexistent path %s -> %s\n", debugstr_w(path), debugstr_w( nt_name.Buffer ));
SetLastError( ERROR_FILE_NOT_FOUND );
return FALSE;
}
if (!wcsncmp(path, L"\\\\.\\", 4) || !wcsncmp(path, L"\\\\?\\", 4))
{
if (length >= nt_name.Length / sizeof(WCHAR))
{
memcpy(volume_path, path, 4 * sizeof(WCHAR));
lstrcpynW( volume_path + 4, nt_name.Buffer + 4, length - 4 );
TRACE("%s -> %s\n", debugstr_w(path), debugstr_w(volume_path));
RtlFreeUnicodeString( &nt_name );
return TRUE;
}
}
else if (length >= (nt_name.Length / sizeof(WCHAR)) - 4)
{
lstrcpynW( volume_path, nt_name.Buffer + 4, length );
volume_path[0] = towupper(volume_path[0]);
TRACE("%s -> %s\n", debugstr_w(path), debugstr_w(volume_path));
RtlFreeUnicodeString( &nt_name );
return TRUE;
}
RtlFreeUnicodeString( &nt_name );
SetLastError( ERROR_FILENAME_EXCED_RANGE );
return FALSE;
}
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 (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH 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, %lu, %p\n", debugstr_w(volumename), volumepathname, buflen, returnlen);
if (!volumename || (len = lstrlenW( 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) &&
!wcsnicmp( linkname, dosdevicesW, ARRAY_SIZE( dosdevicesW )))
{
len += 4;
if (volumepathname && len < buflen)
{
path[0] = linkname[ARRAY_SIZE( dosdevicesW )];
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;
}
/***********************************************************************
* FindFirstVolumeW (kernelbase.@)
*/
HANDLE WINAPI DECLSPEC_HOTPATCH 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;
}
/***********************************************************************
* FindNextVolumeW (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH 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 %lu %s\n", data->Size - 1, debugstr_w(volume) );
return TRUE;
}
SetLastError( ERROR_NO_MORE_FILES );
return FALSE;
}
/***********************************************************************
* FindVolumeClose (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH FindVolumeClose( HANDLE handle )
{
return HeapFree( GetProcessHeap(), 0, handle );
}
/***********************************************************************
* DeleteVolumeMountPointW (kernelbase.@)
*/
BOOL WINAPI /* DECLSPEC_HOTPATCH */ DeleteVolumeMountPointW( LPCWSTR mountpoint )
{
FIXME("(%s), stub!\n", debugstr_w(mountpoint));
return FALSE;
}
/***********************************************************************
* GetVolumeInformationByHandleW (kernelbase.@)
*/
BOOL WINAPI GetVolumeInformationByHandleW( HANDLE handle, WCHAR *label, DWORD label_len,
DWORD *serial, DWORD *filename_len, DWORD *flags,
WCHAR *fsname, DWORD fsname_len )
{
IO_STATUS_BLOCK io;
TRACE( "%p\n", handle );
if (label || serial)
{
char buffer[sizeof(FILE_FS_VOLUME_INFORMATION) + MAX_PATH * sizeof(WCHAR)];
FILE_FS_VOLUME_INFORMATION *info = (FILE_FS_VOLUME_INFORMATION *)buffer;
if (!set_ntstatus( NtQueryVolumeInformationFile( handle, &io, info, sizeof(buffer),
FileFsVolumeInformation ) ))
return FALSE;
if (label)
{
if (label_len < info->VolumeLabelLength / sizeof(WCHAR) + 1)
{
SetLastError( ERROR_BAD_LENGTH );
return FALSE;
}
memcpy( label, info->VolumeLabel, info->VolumeLabelLength );
label[info->VolumeLabelLength / sizeof(WCHAR)] = 0;
}
if (serial) *serial = info->VolumeSerialNumber;
}
if (filename_len || flags || fsname)
{
char buffer[sizeof(FILE_FS_ATTRIBUTE_INFORMATION) + MAX_PATH * sizeof(WCHAR)];
FILE_FS_ATTRIBUTE_INFORMATION *info = (FILE_FS_ATTRIBUTE_INFORMATION *)buffer;
if (!set_ntstatus( NtQueryVolumeInformationFile( handle, &io, info, sizeof(buffer),
FileFsAttributeInformation ) ))
return FALSE;
if (fsname)
{
if (fsname_len < info->FileSystemNameLength / sizeof(WCHAR) + 1)
{
SetLastError( ERROR_BAD_LENGTH );
return FALSE;
}
memcpy( fsname, info->FileSystemName, info->FileSystemNameLength );
fsname[info->FileSystemNameLength / sizeof(WCHAR)] = 0;
}
if (filename_len) *filename_len = info->MaximumComponentNameLength;
if (flags) *flags = info->FileSystemAttributes;
}
return TRUE;
}
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