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136 lines
4.4 KiB
C
136 lines
4.4 KiB
C
/*
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* WoW64 private definitions
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*
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* Copyright 2021 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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#ifndef __WOW64WIN_PRIVATE_H
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#define __WOW64WIN_PRIVATE_H
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#include "syscall.h"
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#define SYSCALL_ENTRY(func) extern NTSTATUS WINAPI wow64_ ## func( UINT *args ) DECLSPEC_HIDDEN;
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ALL_WIN32_SYSCALLS
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#undef SYSCALL_ENTRY
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typedef NTSTATUS (WINAPI *user_callback)( void *params, ULONG size );
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extern user_callback user_callbacks[] DECLSPEC_HIDDEN;
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struct object_attr64
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{
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OBJECT_ATTRIBUTES attr;
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UNICODE_STRING str;
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SECURITY_DESCRIPTOR sd;
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};
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typedef struct
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{
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ULONG Length;
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ULONG RootDirectory;
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ULONG ObjectName;
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ULONG Attributes;
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ULONG SecurityDescriptor;
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ULONG SecurityQualityOfService;
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} OBJECT_ATTRIBUTES32;
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static inline ULONG get_ulong( UINT **args ) { return *(*args)++; }
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static inline HANDLE get_handle( UINT **args ) { return LongToHandle( *(*args)++ ); }
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static inline void *get_ptr( UINT **args ) { return ULongToPtr( *(*args)++ ); }
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static inline void **addr_32to64( void **addr, ULONG *addr32 )
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{
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if (!addr32) return NULL;
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*addr = ULongToPtr( *addr32 );
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return addr;
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}
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static inline SIZE_T *size_32to64( SIZE_T *size, ULONG *size32 )
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{
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if (!size32) return NULL;
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*size = *size32;
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return size;
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}
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static inline void put_addr( ULONG *addr32, void *addr )
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{
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if (addr32) *addr32 = PtrToUlong( addr );
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}
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static inline void put_size( ULONG *size32, SIZE_T size )
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{
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if (size32) *size32 = min( size, MAXDWORD );
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}
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static inline UNICODE_STRING *unicode_str_32to64( UNICODE_STRING *str, const UNICODE_STRING32 *str32 )
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{
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if (!str32) return NULL;
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str->Length = str32->Length;
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str->MaximumLength = str32->MaximumLength;
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str->Buffer = ULongToPtr( str32->Buffer );
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return str;
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}
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static inline SECURITY_DESCRIPTOR *secdesc_32to64( SECURITY_DESCRIPTOR *out, const SECURITY_DESCRIPTOR *in )
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{
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/* relative descr has the same layout for 32 and 64 */
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const SECURITY_DESCRIPTOR_RELATIVE *sd = (const SECURITY_DESCRIPTOR_RELATIVE *)in;
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if (!in) return NULL;
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out->Revision = sd->Revision;
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out->Sbz1 = sd->Sbz1;
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out->Control = sd->Control & ~SE_SELF_RELATIVE;
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if (sd->Control & SE_SELF_RELATIVE)
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{
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if (sd->Owner) out->Owner = (PSID)((BYTE *)sd + sd->Owner);
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if (sd->Group) out->Group = (PSID)((BYTE *)sd + sd->Group);
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if ((sd->Control & SE_SACL_PRESENT) && sd->Sacl) out->Sacl = (PSID)((BYTE *)sd + sd->Sacl);
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if ((sd->Control & SE_DACL_PRESENT) && sd->Dacl) out->Dacl = (PSID)((BYTE *)sd + sd->Dacl);
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}
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else
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{
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out->Owner = ULongToPtr( sd->Owner );
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out->Group = ULongToPtr( sd->Group );
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if (sd->Control & SE_SACL_PRESENT) out->Sacl = ULongToPtr( sd->Sacl );
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if (sd->Control & SE_DACL_PRESENT) out->Dacl = ULongToPtr( sd->Dacl );
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}
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return out;
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}
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static inline OBJECT_ATTRIBUTES *objattr_32to64( struct object_attr64 *out, const OBJECT_ATTRIBUTES32 *in )
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{
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memset( out, 0, sizeof(*out) );
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if (!in) return NULL;
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if (in->Length != sizeof(*in)) return &out->attr;
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out->attr.Length = sizeof(out->attr);
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out->attr.RootDirectory = LongToHandle( in->RootDirectory );
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out->attr.Attributes = in->Attributes;
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out->attr.ObjectName = unicode_str_32to64( &out->str, ULongToPtr( in->ObjectName ));
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out->attr.SecurityQualityOfService = ULongToPtr( in->SecurityQualityOfService );
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out->attr.SecurityDescriptor = secdesc_32to64( &out->sd, ULongToPtr( in->SecurityDescriptor ));
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return &out->attr;
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}
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static inline void set_last_error32( DWORD err )
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{
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TEB *teb = NtCurrentTeb();
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TEB32 *teb32 = (TEB32 *)((char *)teb + teb->WowTebOffset);
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teb32->LastErrorValue = err;
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}
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#endif /* __WOW64WIN_PRIVATE_H */
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