dlls/wow64/wow64_private.h

   1 /*
   2  * WoW64 private definitions
   3  *
   4  * Copyright 2021 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #ifndef __WOW64_PRIVATE_H
  22 #define __WOW64_PRIVATE_H
  23
  24 #include "../ntdll/ntsyscalls.h"
  25 #include "struct32.h"
  26
  27 #define SYSCALL_ENTRY(id,name,_args) extern NTSTATUS WINAPI wow64_ ## name( UINT *args );
  28 ALL_SYSCALLS32
  29 #undef SYSCALL_ENTRY
  30
  31 extern void init_image_mapping( HMODULE module );
  32 extern void init_file_redirects(void);
  33 extern BOOL get_file_redirect( OBJECT_ATTRIBUTES *attr );
  34
  35 extern USHORT native_machine;
  36 extern USHORT current_machine;
  37 extern ULONG_PTR args_alignment;
  38 extern ULONG_PTR highest_user_address;
  39 extern ULONG_PTR default_zero_bits;
  40 extern SYSTEM_DLL_INIT_BLOCK *pLdrSystemDllInitBlock;
  41
  42 extern void (WINAPI *pBTCpuNotifyFlushInstructionCache2)( const void *, SIZE_T );
  43 extern void (WINAPI *pBTCpuNotifyMapViewOfSection)( void * );
  44 extern void (WINAPI *pBTCpuNotifyMemoryAlloc)( void *, SIZE_T, ULONG, ULONG );
  45 extern void (WINAPI *pBTCpuNotifyMemoryDirty)( void *, SIZE_T );
  46 extern void (WINAPI *pBTCpuNotifyMemoryFree)( void *, SIZE_T, ULONG );
  47 extern void (WINAPI *pBTCpuNotifyMemoryProtect)( void *, SIZE_T, ULONG );
  48 extern void (WINAPI *pBTCpuNotifyUnmapViewOfSection)( void * );
  49 extern void (WINAPI *pBTCpuUpdateProcessorInformation)( SYSTEM_CPU_INFORMATION * );
  50 extern void (WINAPI *pBTCpuThreadTerm)( HANDLE );
  51
  52 struct object_attr64
  53 {
  54     OBJECT_ATTRIBUTES   attr;
  55     UNICODE_STRING      str;
  56     SECURITY_DESCRIPTOR sd;
  57 };
  58
  59 /* cf. GetSystemWow64Directory2 */
  60 static inline const WCHAR *get_machine_wow64_dir( USHORT machine )
  61 {
  62     switch (machine)
  63     {
  64     case IMAGE_FILE_MACHINE_TARGET_HOST: return L"\\??\\C:\\windows\\system32";
  65     case IMAGE_FILE_MACHINE_I386:        return L"\\??\\C:\\windows\\syswow64";
  66     case IMAGE_FILE_MACHINE_ARMNT:       return L"\\??\\C:\\windows\\sysarm32";
  67     default: return NULL;
  68     }
  69 }
  70
  71 static inline ULONG get_ulong( UINT **args ) { return *(*args)++; }
  72 static inline HANDLE get_handle( UINT **args ) { return LongToHandle( *(*args)++ ); }
  73 static inline void *get_ptr( UINT **args ) { return ULongToPtr( *(*args)++ ); }
  74
  75 static inline ULONG64 get_ulong64( UINT **args )
  76 {
  77     ULONG64 ret;
  78
  79     *args = (UINT *)(((ULONG_PTR)*args + args_alignment - 1) & ~(args_alignment - 1));
  80     ret = *(ULONG64 *)*args;
  81     *args += 2;
  82     return ret;
  83 }
  84
  85 static inline ULONG_PTR get_zero_bits( ULONG_PTR zero_bits )
  86 {
  87     return zero_bits ? zero_bits : default_zero_bits;
  88 }
  89
  90 static inline void **addr_32to64( void **addr, ULONG *addr32 )
  91 {
  92     if (!addr32) return NULL;
  93     *addr = ULongToPtr( *addr32 );
  94     return addr;
  95 }
  96
  97 static inline SIZE_T *size_32to64( SIZE_T *size, ULONG *size32 )
  98 {
  99     if (!size32) return NULL;
 100     *size = *size32;
 101     return size;
 102 }
 103
 104 static inline void *apc_32to64( ULONG func )
 105 {
 106     return func ? Wow64ApcRoutine : NULL;
 107 }
 108
 109 static inline void *apc_param_32to64( ULONG func, ULONG context )
 110 {
 111     if (!func) return ULongToPtr( context );
 112     return (void *)(ULONG_PTR)(((ULONG64)func << 32) | context);
 113 }
 114
 115 static inline IO_STATUS_BLOCK *iosb_32to64( IO_STATUS_BLOCK *io, IO_STATUS_BLOCK32 *io32 )
 116 {
 117     if (!io32) return NULL;
 118     io->Pointer = io32;
 119     return io;
 120 }
 121
 122 static inline UNICODE_STRING *unicode_str_32to64( UNICODE_STRING *str, const UNICODE_STRING32 *str32 )
 123 {
 124     if (!str32) return NULL;
 125     str->Length = str32->Length;
 126     str->MaximumLength = str32->MaximumLength;
 127     str->Buffer = ULongToPtr( str32->Buffer );
 128     return str;
 129 }
 130
 131 static inline CLIENT_ID *client_id_32to64( CLIENT_ID *id, const CLIENT_ID32 *id32 )
 132 {
 133     if (!id32) return NULL;
 134     id->UniqueProcess = LongToHandle( id32->UniqueProcess );
 135     id->UniqueThread = LongToHandle( id32->UniqueThread );
 136     return id;
 137 }
 138
 139 static inline SECURITY_DESCRIPTOR *secdesc_32to64( SECURITY_DESCRIPTOR *out, const SECURITY_DESCRIPTOR *in )
 140 {
 141     /* relative descr has the same layout for 32 and 64 */
 142     const SECURITY_DESCRIPTOR_RELATIVE *sd = (const SECURITY_DESCRIPTOR_RELATIVE *)in;
 143
 144     if (!in) return NULL;
 145     out->Revision = sd->Revision;
 146     out->Sbz1     = sd->Sbz1;
 147     out->Control  = sd->Control & ~SE_SELF_RELATIVE;
 148     if (sd->Control & SE_SELF_RELATIVE)
 149     {
 150         out->Owner = sd->Owner ? (PSID)((BYTE *)sd + sd->Owner) : NULL;
 151         out->Group = sd->Group ? (PSID)((BYTE *)sd + sd->Group) : NULL;
 152         out->Sacl = ((sd->Control & SE_SACL_PRESENT) && sd->Sacl) ? (PSID)((BYTE *)sd + sd->Sacl) : NULL;
 153         out->Dacl = ((sd->Control & SE_DACL_PRESENT) && sd->Dacl) ? (PSID)((BYTE *)sd + sd->Dacl) : NULL;
 154     }
 155     else
 156     {
 157         out->Owner = ULongToPtr( sd->Owner );
 158         out->Group = ULongToPtr( sd->Group );
 159         out->Sacl = (sd->Control & SE_SACL_PRESENT) ? ULongToPtr( sd->Sacl ) : NULL;
 160         out->Dacl = (sd->Control & SE_DACL_PRESENT) ? ULongToPtr( sd->Dacl ) : NULL;
 161     }
 162     return out;
 163 }
 164
 165 static inline OBJECT_ATTRIBUTES *objattr_32to64( struct object_attr64 *out, const OBJECT_ATTRIBUTES32 *in )
 166 {
 167     memset( out, 0, sizeof(*out) );
 168     if (!in) return NULL;
 169     if (in->Length != sizeof(*in)) return &out->attr;
 170
 171     out->attr.Length = sizeof(out->attr);
 172     out->attr.RootDirectory = LongToHandle( in->RootDirectory );
 173     out->attr.Attributes = in->Attributes;
 174     out->attr.ObjectName = unicode_str_32to64( &out->str, ULongToPtr( in->ObjectName ));
 175     out->attr.SecurityQualityOfService = ULongToPtr( in->SecurityQualityOfService );
 176     out->attr.SecurityDescriptor = secdesc_32to64( &out->sd, ULongToPtr( in->SecurityDescriptor ));
 177     return &out->attr;
 178 }
 179
 180 static inline OBJECT_ATTRIBUTES *objattr_32to64_redirect( struct object_attr64 *out,
 181                                                           const OBJECT_ATTRIBUTES32 *in )
 182 {
 183     OBJECT_ATTRIBUTES *attr = objattr_32to64( out, in );
 184
 185     if (attr) get_file_redirect( attr );
 186     return attr;
 187 }
 188
 189 static inline TOKEN_USER *token_user_32to64( TOKEN_USER *out, const TOKEN_USER32 *in )
 190 {
 191     out->User.Sid = ULongToPtr( in->User.Sid );
 192     out->User.Attributes = in->User.Attributes;
 193     return out;
 194 }
 195
 196 static inline TOKEN_OWNER *token_owner_32to64( TOKEN_OWNER *out, const TOKEN_OWNER32 *in )
 197 {
 198     out->Owner = ULongToPtr( in->Owner );
 199     return out;
 200 }
 201
 202 static inline TOKEN_PRIMARY_GROUP *token_primary_group_32to64( TOKEN_PRIMARY_GROUP *out, const TOKEN_PRIMARY_GROUP32 *in )
 203 {
 204     out->PrimaryGroup = ULongToPtr( in->PrimaryGroup );
 205     return out;
 206 }
 207
 208 static inline TOKEN_DEFAULT_DACL *token_default_dacl_32to64( TOKEN_DEFAULT_DACL *out, const TOKEN_DEFAULT_DACL32 *in )
 209 {
 210     out->DefaultDacl = ULongToPtr( in->DefaultDacl );
 211     return out;
 212 }
 213
 214 static inline void put_handle( ULONG *handle32, HANDLE handle )
 215 {
 216     *handle32 = HandleToULong( handle );
 217 }
 218
 219 static inline void put_addr( ULONG *addr32, void *addr )
 220 {
 221     if (addr32) *addr32 = PtrToUlong( addr );
 222 }
 223
 224 static inline void put_size( ULONG *size32, SIZE_T size )
 225 {
 226     if (size32) *size32 = min( size, MAXDWORD );
 227 }
 228
 229 static inline void put_client_id( CLIENT_ID32 *id32, const CLIENT_ID *id )
 230 {
 231     if (!id32) return;
 232     id32->UniqueProcess = HandleToLong( id->UniqueProcess );
 233     id32->UniqueThread = HandleToLong( id->UniqueThread );
 234 }
 235
 236 static inline void put_iosb( IO_STATUS_BLOCK32 *io32, const IO_STATUS_BLOCK *io )
 237 {
 238     /* sync I/O modifies the 64-bit iosb right away, so in that case we update the 32-bit one */
 239     /* async I/O leaves the 64-bit one untouched and updates the 32-bit one directly later on */
 240     if (io32 && io->Pointer != io32)
 241     {
 242         io32->Status = io->Status;
 243         io32->Information = io->Information;
 244     }
 245 }
 246
 247 extern void put_section_image_info( SECTION_IMAGE_INFORMATION32 *info32,
 248                                     const SECTION_IMAGE_INFORMATION *info );
 249 extern void put_vm_counters( VM_COUNTERS_EX32 *info32, const VM_COUNTERS_EX *info,
 250                              ULONG size );
 251
 252 #endif /* __WOW64_PRIVATE_H */