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wine/dlls/kernel/volume.c
Alexandre Julliard 1de20ae4af Rewrote handling of COM and LPT devices to use symlinks in 
$WINEPREFIX/dosdevices, with suitable defaults if the symlinks are
missing.
Rewrote QueryDosDevice and DefineDosDevice to use the new scheme.
Added temporary code to create the symlinks based on the contents of
the config file.
2004-03-20 02:28:51 +00:00

1138 lines
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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 "file.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
};
/* return default device to use for serial ports */
/* result should not be more than 16 characters long */
static BOOL get_default_com_device( char *buffer, int num )
{
if (!num || num > 9) return FALSE;
#ifdef linux
sprintf( buffer, "/dev/ttyS%d", num - 1 );
return TRUE;
#else
FIXME( "no known default for device com%d\n", num );
return FALSE;
#endif
}
/* return default device to use for parallel ports */
/* result should not be more than 16 characters long */
static BOOL get_default_lpt_device( char *buffer, int num )
{
if (!num || num > 9) return FALSE;
#ifdef linux
sprintf( buffer, "/dev/lp%d", num - 1 );
return TRUE;
#else
FIXME( "no known default for device lpt%d\n", num );
return FALSE;
#endif
}
/* 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 != sizeof(buffer))
{
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;
}
/***********************************************************************
* 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") )))
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 );
}
if (count)
MESSAGE( "\nYou can now remove the [SerialPorts] and [ParallelPorts] sections\n"
"in your configuration file, they are replaced by the above symlinks.\n\n" );
}
HeapFree( GetProcessHeap(), 0, buffer );
}
/******************************************************************
* VOLUME_OpenDevice
*/
HANDLE VOLUME_OpenDevice( LPCWSTR name, DWORD access, DWORD sharing,
LPSECURITY_ATTRIBUTES sa, DWORD attributes )
{
char *buffer, *dev;
HANDLE ret;
if (!(buffer = get_dos_device_path( name ))) return 0;
dev = strrchr( buffer, '/' ) + 1;
for (;;)
{
TRACE("trying %s\n", buffer );
ret = FILE_CreateFile( buffer, access, sharing, sa, OPEN_EXISTING, 0, 0, TRUE, DRIVE_FIXED );
if (ret || GetLastError() != ERROR_FILE_NOT_FOUND) break;
if (!dev) break;
/* now try some defaults for it */
if (!strcmp( dev, "aux" ))
{
strcpy( dev, "com1" );
continue;
}
if (!strcmp( dev, "prn" ))
{
strcpy( dev, "lpt1" );
continue;
}
if (!strcmp( dev, "nul" ))
{
strcpy( buffer, "/dev/null" );
dev = NULL; /* last try */
continue;
}
if (!strncmp( dev, "com", 3 ) && get_default_com_device( buffer, dev[3] - '0' ))
{
dev = NULL; /* last try */
continue;
}
if (!strncmp( dev, "lpt", 3 ) && get_default_lpt_device( buffer, dev[3] - '0' ))
{
dev = NULL; /* last try */
continue;
}
break;
}
if (!ret) ERR( "could not open device %s err %ld\n", debugstr_w(name), GetLastError() );
HeapFree( GetProcessHeap(), 0, buffer );
return ret;
}
/******************************************************************
* 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 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() );
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 );
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:
default: /* default to FAT file system (FIXME) */
if (fsname) lstrcpynW( fsname, fatW, fsname_len );
if (filename_len) *filename_len = 255;
if (flags) *flags = FILE_CASE_PRESERVED_NAMES; /* FIXME */
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 )
{
UNICODE_STRING rootW;
LPWSTR labelW, fsnameW;
BOOL ret;
if (root) RtlCreateUnicodeStringFromAsciiz(&rootW, root);
else rootW.Buffer = NULL;
labelW = label ? HeapAlloc(GetProcessHeap(), 0, label_len * sizeof(WCHAR)) : NULL;
fsnameW = fsname ? HeapAlloc(GetProcessHeap(), 0, fsname_len * sizeof(WCHAR)) : NULL;
if ((ret = GetVolumeInformationW(rootW.Buffer, labelW, label_len, serial,
filename_len, flags, fsnameW, fsname_len)))
{
if (label) WideCharToMultiByte(CP_ACP, 0, labelW, -1, label, label_len, NULL, NULL);
if (fsname) WideCharToMultiByte(CP_ACP, 0, fsnameW, -1, fsname, fsname_len, NULL, NULL);
}
RtlFreeUnicodeString(&rootW);
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)
{
UNICODE_STRING rootW, volnameW;
BOOL ret;
if (root) RtlCreateUnicodeStringFromAsciiz(&rootW, root);
else rootW.Buffer = NULL;
if (volname) RtlCreateUnicodeStringFromAsciiz(&volnameW, volname);
else volnameW.Buffer = NULL;
ret = SetVolumeLabelW( rootW.Buffer, volnameW.Buffer );
RtlFreeUnicodeString(&rootW);
RtlFreeUnicodeString(&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 dosdev;
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;
}
/* first check for a DOS device */
if ((dosdev = RtlIsDosDeviceName_U( devname )))
{
WCHAR name[5];
DWORD len;
char *path, *target, *p;
BOOL ret = FALSE;
memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
name[LOWORD(dosdev)/sizeof(WCHAR)] = 0;
if (!(path = get_dos_device_path( name ))) 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 = '/';
TRACE( "creating symlink %s -> %s\n", path, target );
unlink( path );
if (!symlink( target, path )) ret = TRUE;
else FILE_SetDosError();
HeapFree( GetProcessHeap(), 0, target );
}
else SetLastError( ERROR_NOT_ENOUGH_MEMORY );
HeapFree( GetProcessHeap(), 0, path );
return ret;
}
/* now it must be a drive mapping */
FIXME("(0x%08lx,%s,%s) drive mappings not supported yet\n",
flags, debugstr_w(devname), debugstr_w(targetpath) );
SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
return FALSE;
}
/***********************************************************************
* DefineDosDeviceA (KERNEL32.@)
*/
BOOL WINAPI DefineDosDeviceA(DWORD flags, LPCSTR devname, LPCSTR targetpath)
{
UNICODE_STRING d, t;
BOOL ret;
if (!RtlCreateUnicodeStringFromAsciiz(&d, devname))
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
if (!RtlCreateUnicodeStringFromAsciiz(&t, targetpath))
{
RtlFreeUnicodeString(&d);
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
ret = DefineDosDeviceW(flags, d.Buffer, t.Buffer);
RtlFreeUnicodeString(&d);
RtlFreeUnicodeString(&t);
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 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};
char buffer[16];
struct stat st;
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 )))
{
SetLastError( ERROR_BAD_PATHNAME );
return 0;
}
memcpy( name, devname + HIWORD(dosdev)/sizeof(WCHAR), LOWORD(dosdev) );
name[LOWORD(dosdev)/sizeof(WCHAR)] = 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 /* look for 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;
}
buffer[0] = 0;
if (!strcmpiW( name, nulW ))
strcpy( buffer, "/dev/null" );
else if (!strncmpiW( name, comW, 3 ))
get_default_com_device( buffer, name[3] - '0' );
else if (!strncmpiW( name, lptW, 3 ))
get_default_lpt_device( buffer, name[3] - '0' );
if (buffer[0] && !stat( buffer, &st ))
ret = MultiByteToWideChar( CP_UNIXCP, 0, buffer, -1, target, bufsize );
else
SetLastError( ERROR_FILE_NOT_FOUND );
}
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;
char *path, *dev, buffer[16];
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);
if (!(path = get_dos_device_path( com0W ))) return 0;
dev = strrchr( path, '/' ) + 1;
for (i = 1; i <= 9; i++)
{
sprintf( dev, "com%d", i );
if (!stat( path, &st ) ||
(get_default_com_device( buffer, i ) && !stat( buffer, &st )))
{
if (p + 5 >= target + bufsize)
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
return 0;
}
strcpyW( p, comW );
p[3] = '0' + i;
p[4] = 0;
p += 5;
}
}
for (i = 1; i <= 9; i++)
{
sprintf( dev, "lpt%d", i );
if (!stat( path, &st ) ||
(get_default_lpt_device( buffer, i ) && !stat( buffer, &st )))
{
if (p + 5 >= target + bufsize)
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
return 0;
}
strcpyW( p, lptW );
p[3] = '0' + i;
p[4] = 0;
p += 5;
}
}
*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;
UNICODE_STRING devnameW;
LPWSTR targetW = HeapAlloc( GetProcessHeap(),0, bufsize * sizeof(WCHAR) );
if (!targetW)
{
SetLastError( ERROR_NOT_ENOUGH_MEMORY );
return 0;
}
if (devname) RtlCreateUnicodeStringFromAsciiz(&devnameW, devname);
else devnameW.Buffer = NULL;
retW = QueryDosDeviceW(devnameW.Buffer, targetW, bufsize);
ret = WideCharToMultiByte(CP_ACP, 0, targetW, retW, target, bufsize, NULL, NULL);
RtlFreeUnicodeString(&devnameW);
HeapFree(GetProcessHeap(), 0, targetW);
return ret;
}
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