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ntdll/kernel32: Moved GetThreadSelectorEntry to ntdll. 

- implemented NtQueryInformationThread's ThreadDescriptorTableEntry
  information class
- used it to implement the kernel32's equivalent (GetThreadSelectorEntry)
This commit is contained in:
Eric Pouech 2006-05-26 12:10:57 +02:00 committed by Alexandre Julliard
parent 1d6e2590e0
commit 2d3504c309
3 changed files with 77 additions and 57 deletions
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66
dlls/kernel/selector.c
View File

@ -573,67 +573,21 @@ __ASM_GLOBAL_FUNC( UnMapSLFixArray, "ret $8" );
/***********************************************************************
* GetThreadSelectorEntry (KERNEL32.@)
*/
BOOL WINAPI GetThreadSelectorEntry( HANDLE hthread, DWORD sel, LPLDT_ENTRY ldtent)
BOOL WINAPI GetThreadSelectorEntry( HANDLE hthread, DWORD sel, LPLDT_ENTRY ldtent )
{
#ifdef __i386__
BOOL ret;
THREAD_DESCRIPTOR_INFORMATION tdi;
NTSTATUS status;
if (!(sel & 4)) /* GDT selector */
tdi.Selector = sel;
status = NtQueryInformationThread( hthread, ThreadDescriptorTableEntry,
&tdi, sizeof(tdi), NULL);
if (status)
{
sel &= ~3; /* ignore RPL */
if (!sel) /* null selector */
{
memset( ldtent, 0, sizeof(*ldtent) );
return TRUE;
}
ldtent->BaseLow = 0;
ldtent->HighWord.Bits.BaseMid = 0;
ldtent->HighWord.Bits.BaseHi = 0;
ldtent->LimitLow = 0xffff;
ldtent->HighWord.Bits.LimitHi = 0xf;
ldtent->HighWord.Bits.Dpl = 3;
ldtent->HighWord.Bits.Sys = 0;
ldtent->HighWord.Bits.Pres = 1;
ldtent->HighWord.Bits.Granularity = 1;
ldtent->HighWord.Bits.Default_Big = 1;
ldtent->HighWord.Bits.Type = 0x12;
/* it has to be one of the system GDT selectors */
if (sel == (wine_get_ds() & ~3)) return TRUE;
if (sel == (wine_get_ss() & ~3)) return TRUE;
if (sel == (wine_get_cs() & ~3))
{
ldtent->HighWord.Bits.Type |= 8; /* code segment */
return TRUE;
}
SetLastError( ERROR_NOACCESS );
SetLastError( RtlNtStatusToDosError(status) );
return FALSE;
}
SERVER_START_REQ( get_selector_entry )
{
req->handle = hthread;
req->entry = sel >> __AHSHIFT;
if ((ret = !wine_server_call_err( req )))
{
if (!(reply->flags & WINE_LDT_FLAGS_ALLOCATED))
{
SetLastError( ERROR_MR_MID_NOT_FOUND ); /* sic */
ret = FALSE;
}
else
{
wine_ldt_set_base( ldtent, (void *)reply->base );
wine_ldt_set_limit( ldtent, reply->limit );
wine_ldt_set_flags( ldtent, reply->flags );
}
}
}
SERVER_END_REQ;
return ret;
#else
SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
return FALSE;
#endif
*ldtent = tdi.Entry;
return TRUE;
}

62
dlls/ntdll/thread.c
View File

@ -1073,11 +1073,71 @@ NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
}
}
return status;
case ThreadDescriptorTableEntry:
{
#ifdef __i386__
THREAD_DESCRIPTOR_INFORMATION* tdi = data;
if (length < sizeof(*tdi))
status = STATUS_INFO_LENGTH_MISMATCH;
else if (!(tdi->Selector & 4)) /* GDT selector */
{
unsigned sel = tdi->Selector & ~3; /* ignore RPL */
status = STATUS_SUCCESS;
if (!sel) /* null selector */
memset( &tdi->Entry, 0, sizeof(tdi->Entry) );
else
{
tdi->Entry.BaseLow = 0;
tdi->Entry.HighWord.Bits.BaseMid = 0;
tdi->Entry.HighWord.Bits.BaseHi = 0;
tdi->Entry.LimitLow = 0xffff;
tdi->Entry.HighWord.Bits.LimitHi = 0xf;
tdi->Entry.HighWord.Bits.Dpl = 3;
tdi->Entry.HighWord.Bits.Sys = 0;
tdi->Entry.HighWord.Bits.Pres = 1;
tdi->Entry.HighWord.Bits.Granularity = 1;
tdi->Entry.HighWord.Bits.Default_Big = 1;
tdi->Entry.HighWord.Bits.Type = 0x12;
/* it has to be one of the system GDT selectors */
if (sel != (wine_get_ds() & ~3) && sel != (wine_get_ss() & ~3))
{
if (sel == (wine_get_cs() & ~3))
tdi->Entry.HighWord.Bits.Type |= 8; /* code segment */
else status = STATUS_ACCESS_DENIED;
}
}
}
else
{
SERVER_START_REQ( get_selector_entry )
{
req->handle = handle;
req->entry = tdi->Selector >> 3;
status = wine_server_call( req );
if (!status)
{
if (!(reply->flags & WINE_LDT_FLAGS_ALLOCATED))
status = STATUS_INVALID_LDT_OFFSET;
else
{
wine_ldt_set_base ( &tdi->Entry, (void *)reply->base );
wine_ldt_set_limit( &tdi->Entry, reply->limit );
wine_ldt_set_flags( &tdi->Entry, reply->flags );
}
}
}
SERVER_END_REQ;
}
#else
status = STATUS_NOT_IMPLEMENTED;
#endif
if (status == STATUS_SUCCESS && ret_len) *ret_len = sizeof(*tdi);
return status;
}
case ThreadPriority:
case ThreadBasePriority:
case ThreadAffinityMask:
case ThreadImpersonationToken:
case ThreadDescriptorTableEntry:
case ThreadEnableAlignmentFaultFixup:
case ThreadEventPair_Reusable:
case ThreadQuerySetWin32StartAddress:

6
include/winternl.h
View File

@ -728,6 +728,12 @@ typedef struct _THREAD_BASIC_INFORMATION
LONG BasePriority;
} THREAD_BASIC_INFORMATION, *PTHREAD_BASIC_INFORMATION;
typedef struct _THREAD_DESCRIPTOR_INFORMATION
{
DWORD Selector;
LDT_ENTRY Entry;
} THREAD_DESCRIPTOR_INFORMATION, *PTHREAD_DESCRIPTOR_INFORMATION;
typedef struct _KERNEL_USER_TIMES {
LARGE_INTEGER CreateTime;
LARGE_INTEGER ExitTime;