480 lines
19 KiB
C
480 lines
19 KiB
C
/*
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* Mount manager service implementation
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*
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* Copyright 2008 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#include <unistd.h>
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#define NONAMELESSUNION
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#include "mountmgr.h"
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#include "winreg.h"
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#include "wine/library.h"
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#include "wine/list.h"
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#include "wine/unicode.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(mountmgr);
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#define MIN_ID_LEN 4
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struct mount_point
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{
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struct list entry; /* entry in mount points list */
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DEVICE_OBJECT *device; /* disk device */
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UNICODE_STRING name; /* device name */
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UNICODE_STRING link; /* DOS device symlink */
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void *id; /* device unique id */
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unsigned int id_len;
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};
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static struct list mount_points_list = LIST_INIT(mount_points_list);
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static HKEY mount_key;
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void set_mount_point_id( struct mount_point *mount, const void *id, unsigned int id_len )
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{
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RtlFreeHeap( GetProcessHeap(), 0, mount->id );
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mount->id_len = max( MIN_ID_LEN, id_len );
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if ((mount->id = RtlAllocateHeap( GetProcessHeap(), HEAP_ZERO_MEMORY, mount->id_len )))
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{
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memcpy( mount->id, id, id_len );
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RegSetValueExW( mount_key, mount->link.Buffer, 0, REG_BINARY, mount->id, mount->id_len );
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}
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else mount->id_len = 0;
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}
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static struct mount_point *add_mount_point( DEVICE_OBJECT *device, UNICODE_STRING *device_name,
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const WCHAR *link )
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{
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struct mount_point *mount;
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WCHAR *str;
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UINT len = (strlenW(link) + 1) * sizeof(WCHAR) + device_name->Length + sizeof(WCHAR);
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if (!(mount = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*mount) + len ))) return NULL;
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str = (WCHAR *)(mount + 1);
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strcpyW( str, link );
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RtlInitUnicodeString( &mount->link, str );
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str += strlenW(str) + 1;
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memcpy( str, device_name->Buffer, device_name->Length );
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str[device_name->Length / sizeof(WCHAR)] = 0;
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mount->name.Buffer = str;
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mount->name.Length = device_name->Length;
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mount->name.MaximumLength = device_name->Length + sizeof(WCHAR);
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mount->device = device;
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mount->id = NULL;
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list_add_tail( &mount_points_list, &mount->entry );
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IoCreateSymbolicLink( &mount->link, device_name );
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TRACE( "created %s id %s for %s\n", debugstr_w(mount->link.Buffer),
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debugstr_a(mount->id), debugstr_w(mount->name.Buffer) );
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return mount;
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}
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/* create the DosDevices mount point symlink for a new device */
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struct mount_point *add_dosdev_mount_point( DEVICE_OBJECT *device, UNICODE_STRING *device_name, int drive )
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{
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static const WCHAR driveW[] = {'\\','D','o','s','D','e','v','i','c','e','s','\\','%','c',':',0};
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WCHAR link[sizeof(driveW)];
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sprintfW( link, driveW, 'A' + drive );
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return add_mount_point( device, device_name, link );
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}
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/* create the Volume mount point symlink for a new device */
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struct mount_point *add_volume_mount_point( DEVICE_OBJECT *device, UNICODE_STRING *device_name,
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const GUID *guid )
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{
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static const WCHAR volumeW[] = {'\\','?','?','\\','V','o','l','u','m','e','{',
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'%','0','8','x','-','%','0','4','x','-','%','0','4','x','-',
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'%','0','2','x','%','0','2','x','-','%','0','2','x','%','0','2','x',
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'%','0','2','x','%','0','2','x','%','0','2','x','%','0','2','x','}',0};
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WCHAR link[sizeof(volumeW)];
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sprintfW( link, volumeW, guid->Data1, guid->Data2, guid->Data3,
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guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
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guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7]);
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return add_mount_point( device, device_name, link );
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}
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/* delete the mount point symlinks when a device goes away */
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void delete_mount_point( struct mount_point *mount )
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{
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TRACE( "deleting %s\n", debugstr_w(mount->link.Buffer) );
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list_remove( &mount->entry );
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RegDeleteValueW( mount_key, mount->link.Buffer );
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IoDeleteSymbolicLink( &mount->link );
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RtlFreeHeap( GetProcessHeap(), 0, mount->id );
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RtlFreeHeap( GetProcessHeap(), 0, mount );
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}
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/* check if a given mount point matches the requested specs */
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static BOOL matching_mount_point( const struct mount_point *mount, const MOUNTMGR_MOUNT_POINT *spec )
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{
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if (spec->SymbolicLinkNameOffset)
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{
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const WCHAR *name = (const WCHAR *)((const char *)spec + spec->SymbolicLinkNameOffset);
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if (spec->SymbolicLinkNameLength != mount->link.Length) return FALSE;
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if (strncmpiW( name, mount->link.Buffer, mount->link.Length/sizeof(WCHAR)))
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return FALSE;
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}
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if (spec->DeviceNameOffset)
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{
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const WCHAR *name = (const WCHAR *)((const char *)spec + spec->DeviceNameOffset);
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if (spec->DeviceNameLength != mount->name.Length) return FALSE;
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if (strncmpiW( name, mount->name.Buffer, mount->name.Length/sizeof(WCHAR)))
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return FALSE;
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}
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if (spec->UniqueIdOffset)
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{
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const void *id = ((const char *)spec + spec->UniqueIdOffset);
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if (spec->UniqueIdLength != mount->id_len) return FALSE;
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if (memcmp( id, mount->id, mount->id_len )) return FALSE;
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}
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return TRUE;
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}
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/* implementation of IOCTL_MOUNTMGR_QUERY_POINTS */
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static NTSTATUS query_mount_points( void *buff, SIZE_T insize,
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SIZE_T outsize, IO_STATUS_BLOCK *iosb )
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{
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UINT count, pos, size;
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MOUNTMGR_MOUNT_POINT *input = buff;
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MOUNTMGR_MOUNT_POINTS *info;
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struct mount_point *mount;
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/* sanity checks */
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if (input->SymbolicLinkNameOffset + input->SymbolicLinkNameLength > insize ||
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input->UniqueIdOffset + input->UniqueIdLength > insize ||
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input->DeviceNameOffset + input->DeviceNameLength > insize ||
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input->SymbolicLinkNameOffset + input->SymbolicLinkNameLength < input->SymbolicLinkNameOffset ||
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input->UniqueIdOffset + input->UniqueIdLength < input->UniqueIdOffset ||
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input->DeviceNameOffset + input->DeviceNameLength < input->DeviceNameOffset)
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return STATUS_INVALID_PARAMETER;
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count = size = 0;
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LIST_FOR_EACH_ENTRY( mount, &mount_points_list, struct mount_point, entry )
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{
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if (!matching_mount_point( mount, input )) continue;
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size += mount->name.Length;
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size += mount->link.Length;
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size += mount->id_len;
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size = (size + sizeof(WCHAR) - 1) & ~(sizeof(WCHAR) - 1);
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count++;
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}
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pos = FIELD_OFFSET( MOUNTMGR_MOUNT_POINTS, MountPoints[count] );
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size += pos;
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if (size > outsize)
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{
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info = buff;
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if (size >= sizeof(info->Size)) info->Size = size;
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iosb->Information = sizeof(info->Size);
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return STATUS_MORE_ENTRIES;
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}
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input = HeapAlloc( GetProcessHeap(), 0, insize );
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if (!input)
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return STATUS_NO_MEMORY;
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memcpy( input, buff, insize );
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info = buff;
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info->NumberOfMountPoints = count;
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count = 0;
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LIST_FOR_EACH_ENTRY( mount, &mount_points_list, struct mount_point, entry )
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{
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if (!matching_mount_point( mount, input )) continue;
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info->MountPoints[count].DeviceNameOffset = pos;
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info->MountPoints[count].DeviceNameLength = mount->name.Length;
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memcpy( (char *)buff + pos, mount->name.Buffer, mount->name.Length );
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pos += mount->name.Length;
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info->MountPoints[count].SymbolicLinkNameOffset = pos;
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info->MountPoints[count].SymbolicLinkNameLength = mount->link.Length;
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memcpy( (char *)buff + pos, mount->link.Buffer, mount->link.Length );
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pos += mount->link.Length;
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info->MountPoints[count].UniqueIdOffset = pos;
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info->MountPoints[count].UniqueIdLength = mount->id_len;
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memcpy( (char *)buff + pos, mount->id, mount->id_len );
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pos += mount->id_len;
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pos = (pos + sizeof(WCHAR) - 1) & ~(sizeof(WCHAR) - 1);
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count++;
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}
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info->Size = pos;
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iosb->Information = pos;
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HeapFree( GetProcessHeap(), 0, input );
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return STATUS_SUCCESS;
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}
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/* implementation of IOCTL_MOUNTMGR_DEFINE_UNIX_DRIVE */
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static NTSTATUS define_unix_drive( const void *in_buff, SIZE_T insize )
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{
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const struct mountmgr_unix_drive *input = in_buff;
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const char *mount_point = NULL, *device = NULL;
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unsigned int i;
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WCHAR letter = tolowerW( input->letter );
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if (letter < 'a' || letter > 'z') return STATUS_INVALID_PARAMETER;
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if (input->type > DRIVE_RAMDISK) return STATUS_INVALID_PARAMETER;
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if (input->mount_point_offset > insize || input->device_offset > insize)
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return STATUS_INVALID_PARAMETER;
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/* make sure string are null-terminated */
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if (input->mount_point_offset)
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{
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mount_point = (const char *)in_buff + input->mount_point_offset;
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for (i = input->mount_point_offset; i < insize; i++)
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if (!*((const char *)in_buff + i)) break;
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if (i >= insize) return STATUS_INVALID_PARAMETER;
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}
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if (input->device_offset)
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{
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device = (const char *)in_buff + input->device_offset;
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for (i = input->device_offset; i < insize; i++)
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if (!*((const char *)in_buff + i)) break;
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if (i >= insize) return STATUS_INVALID_PARAMETER;
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}
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if (input->type != DRIVE_NO_ROOT_DIR)
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{
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enum device_type type = DEVICE_UNKNOWN;
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TRACE( "defining %c: dev %s mount %s type %u\n",
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letter, debugstr_a(device), debugstr_a(mount_point), input->type );
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switch (input->type)
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{
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case DRIVE_REMOVABLE: type = (letter >= 'c') ? DEVICE_HARDDISK : DEVICE_FLOPPY; break;
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case DRIVE_REMOTE: type = DEVICE_NETWORK; break;
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case DRIVE_CDROM: type = DEVICE_CDROM; break;
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case DRIVE_RAMDISK: type = DEVICE_RAMDISK; break;
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case DRIVE_FIXED: type = DEVICE_HARDDISK_VOL; break;
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}
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return add_dos_device( letter - 'a', NULL, device, mount_point, type, NULL );
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}
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else
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{
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TRACE( "removing %c:\n", letter );
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return remove_dos_device( letter - 'a', NULL );
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}
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}
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/* implementation of IOCTL_MOUNTMGR_QUERY_UNIX_DRIVE */
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static NTSTATUS query_unix_drive( void *buff, SIZE_T insize,
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SIZE_T outsize, IO_STATUS_BLOCK *iosb )
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{
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const struct mountmgr_unix_drive *input = buff;
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struct mountmgr_unix_drive *output = NULL;
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char *device, *mount_point;
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int letter = tolowerW( input->letter );
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NTSTATUS status;
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DWORD size, type = DEVICE_UNKNOWN;
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enum device_type device_type;
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char *ptr;
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if (letter < 'a' || letter > 'z') return STATUS_INVALID_PARAMETER;
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if ((status = query_dos_device( letter - 'a', &device_type, &device, &mount_point ))) return status;
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switch (device_type)
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{
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case DEVICE_UNKNOWN: type = DRIVE_UNKNOWN; break;
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case DEVICE_HARDDISK: type = DRIVE_REMOVABLE; break;
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case DEVICE_HARDDISK_VOL: type = DRIVE_FIXED; break;
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case DEVICE_FLOPPY: type = DRIVE_REMOVABLE; break;
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case DEVICE_CDROM: type = DRIVE_CDROM; break;
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case DEVICE_DVD: type = DRIVE_CDROM; break;
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case DEVICE_NETWORK: type = DRIVE_REMOTE; break;
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case DEVICE_RAMDISK: type = DRIVE_RAMDISK; break;
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}
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size = sizeof(*output);
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if (device) size += strlen(device) + 1;
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if (mount_point) size += strlen(mount_point) + 1;
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input = NULL;
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output = buff;
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if (size > outsize)
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{
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iosb->Information = 0;
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if (size >= FIELD_OFFSET( struct mountmgr_unix_drive, size ) + sizeof(output->size))
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{
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output->size = size;
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iosb->Information = FIELD_OFFSET( struct mountmgr_unix_drive, size ) + sizeof(output->size);
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}
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if (size >= FIELD_OFFSET( struct mountmgr_unix_drive, type ) + sizeof(output->type))
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{
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output->type = type;
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iosb->Information = FIELD_OFFSET( struct mountmgr_unix_drive, type ) + sizeof(output->type);
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}
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status = STATUS_MORE_ENTRIES;
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goto done;
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}
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output->size = size;
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output->letter = letter;
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output->type = type;
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ptr = (char *)(output + 1);
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if (mount_point)
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{
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output->mount_point_offset = ptr - (char *)output;
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strcpy( ptr, mount_point );
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ptr += strlen(ptr) + 1;
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}
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else output->mount_point_offset = 0;
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if (device)
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{
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output->device_offset = ptr - (char *)output;
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strcpy( ptr, device );
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ptr += strlen(ptr) + 1;
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}
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else output->device_offset = 0;
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TRACE( "returning %c: dev %s mount %s type %u\n",
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letter, debugstr_a(device), debugstr_a(mount_point), type );
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iosb->Information = ptr - (char *)output;
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done:
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RtlFreeHeap( GetProcessHeap(), 0, device );
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RtlFreeHeap( GetProcessHeap(), 0, mount_point );
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return status;
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}
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/* handler for ioctls on the mount manager device */
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static NTSTATUS WINAPI mountmgr_ioctl( DEVICE_OBJECT *device, IRP *irp )
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{
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IO_STACK_LOCATION *irpsp = IoGetCurrentIrpStackLocation( irp );
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TRACE( "ioctl %x insize %u outsize %u\n",
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irpsp->Parameters.DeviceIoControl.IoControlCode,
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irpsp->Parameters.DeviceIoControl.InputBufferLength,
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irpsp->Parameters.DeviceIoControl.OutputBufferLength );
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switch(irpsp->Parameters.DeviceIoControl.IoControlCode)
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{
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case IOCTL_MOUNTMGR_QUERY_POINTS:
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if (irpsp->Parameters.DeviceIoControl.InputBufferLength < sizeof(MOUNTMGR_MOUNT_POINT))
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{
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irp->IoStatus.u.Status = STATUS_INVALID_PARAMETER;
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break;
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}
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irp->IoStatus.u.Status = query_mount_points( irp->AssociatedIrp.SystemBuffer,
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irpsp->Parameters.DeviceIoControl.InputBufferLength,
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irpsp->Parameters.DeviceIoControl.OutputBufferLength,
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&irp->IoStatus );
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break;
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case IOCTL_MOUNTMGR_DEFINE_UNIX_DRIVE:
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if (irpsp->Parameters.DeviceIoControl.InputBufferLength < sizeof(struct mountmgr_unix_drive))
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{
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irp->IoStatus.u.Status = STATUS_INVALID_PARAMETER;
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break;
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}
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irp->IoStatus.Information = 0;
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irp->IoStatus.u.Status = define_unix_drive( irp->AssociatedIrp.SystemBuffer,
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irpsp->Parameters.DeviceIoControl.InputBufferLength );
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break;
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case IOCTL_MOUNTMGR_QUERY_UNIX_DRIVE:
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if (irpsp->Parameters.DeviceIoControl.InputBufferLength < sizeof(struct mountmgr_unix_drive))
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{
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irp->IoStatus.u.Status = STATUS_INVALID_PARAMETER;
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break;
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}
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irp->IoStatus.u.Status = query_unix_drive( irp->AssociatedIrp.SystemBuffer,
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irpsp->Parameters.DeviceIoControl.InputBufferLength,
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irpsp->Parameters.DeviceIoControl.OutputBufferLength,
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&irp->IoStatus );
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break;
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default:
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FIXME( "ioctl %x not supported\n", irpsp->Parameters.DeviceIoControl.IoControlCode );
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irp->IoStatus.u.Status = STATUS_NOT_SUPPORTED;
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break;
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}
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IoCompleteRequest( irp, IO_NO_INCREMENT );
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return STATUS_SUCCESS;
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}
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/* main entry point for the mount point manager driver */
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NTSTATUS WINAPI DriverEntry( DRIVER_OBJECT *driver, UNICODE_STRING *path )
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{
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static const WCHAR mounted_devicesW[] = {'S','y','s','t','e','m','\\','M','o','u','n','t','e','d','D','e','v','i','c','e','s',0};
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static const WCHAR device_mountmgrW[] = {'\\','D','e','v','i','c','e','\\','M','o','u','n','t','P','o','i','n','t','M','a','n','a','g','e','r',0};
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static const WCHAR link_mountmgrW[] = {'\\','?','?','\\','M','o','u','n','t','P','o','i','n','t','M','a','n','a','g','e','r',0};
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static const WCHAR harddiskW[] = {'\\','D','r','i','v','e','r','\\','H','a','r','d','d','i','s','k',0};
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static const WCHAR driver_serialW[] = {'\\','D','r','i','v','e','r','\\','S','e','r','i','a','l',0};
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static const WCHAR driver_parallelW[] = {'\\','D','r','i','v','e','r','\\','P','a','r','a','l','l','e','l',0};
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#ifdef _WIN64
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static const WCHAR qualified_ports_keyW[] = {'\\','R','E','G','I','S','T','R','Y','\\',
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'M','A','C','H','I','N','E','\\','S','o','f','t','w','a','r','e','\\',
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'W','i','n','e','\\','P','o','r','t','s'}; /* no null terminator */
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static const WCHAR wow64_ports_keyW[] = {'S','o','f','t','w','a','r','e','\\',
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'W','o','w','6','4','3','2','N','o','d','e','\\','W','i','n','e','\\',
|
|
'P','o','r','t','s',0};
|
|
static const WCHAR symbolic_link_valueW[] = {'S','y','m','b','o','l','i','c','L','i','n','k','V','a','l','u','e',0};
|
|
HKEY wow64_ports_key = NULL;
|
|
#endif
|
|
|
|
UNICODE_STRING nameW, linkW;
|
|
DEVICE_OBJECT *device;
|
|
NTSTATUS status;
|
|
|
|
TRACE( "%s\n", debugstr_w(path->Buffer) );
|
|
|
|
driver->MajorFunction[IRP_MJ_DEVICE_CONTROL] = mountmgr_ioctl;
|
|
|
|
RtlInitUnicodeString( &nameW, device_mountmgrW );
|
|
RtlInitUnicodeString( &linkW, link_mountmgrW );
|
|
if (!(status = IoCreateDevice( driver, 0, &nameW, 0, 0, FALSE, &device )))
|
|
status = IoCreateSymbolicLink( &linkW, &nameW );
|
|
if (status)
|
|
{
|
|
FIXME( "failed to create device error %x\n", status );
|
|
return status;
|
|
}
|
|
|
|
RegCreateKeyExW( HKEY_LOCAL_MACHINE, mounted_devicesW, 0, NULL,
|
|
REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &mount_key, NULL );
|
|
|
|
RtlInitUnicodeString( &nameW, harddiskW );
|
|
status = IoCreateDriver( &nameW, harddisk_driver_entry );
|
|
|
|
initialize_dbus();
|
|
initialize_diskarbitration();
|
|
|
|
#ifdef _WIN64
|
|
/* create a symlink so that the Wine port overrides key can be edited with 32-bit reg or regedit */
|
|
RegCreateKeyExW( HKEY_LOCAL_MACHINE, wow64_ports_keyW, 0, NULL, REG_OPTION_CREATE_LINK,
|
|
KEY_SET_VALUE, NULL, &wow64_ports_key, NULL );
|
|
RegSetValueExW( wow64_ports_key, symbolic_link_valueW, 0, REG_LINK,
|
|
(BYTE *)qualified_ports_keyW, sizeof(qualified_ports_keyW) );
|
|
RegCloseKey( wow64_ports_key );
|
|
#endif
|
|
|
|
RtlInitUnicodeString( &nameW, driver_serialW );
|
|
IoCreateDriver( &nameW, serial_driver_entry );
|
|
|
|
RtlInitUnicodeString( &nameW, driver_parallelW );
|
|
IoCreateDriver( &nameW, parallel_driver_entry );
|
|
|
|
return status;
|
|
}
|