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ntdll: Catch bad pointers in RtlWow64EnableFsRedirectionEx.

This commit is contained in:
André Hentschel 2012-08-21 21:58:17 +02:00 committed by Alexandre Julliard
parent 53d7355949
commit aac478f51b
2 changed files with 7 additions and 0 deletions
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2
dlls/ntdll/directory.c
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@ -3022,6 +3022,8 @@ NTSTATUS WINAPI RtlWow64EnableFsRedirection( BOOLEAN enable )
NTSTATUS WINAPI RtlWow64EnableFsRedirectionEx( ULONG disable, ULONG *old_value ) NTSTATUS WINAPI RtlWow64EnableFsRedirectionEx( ULONG disable, ULONG *old_value )
{ {
if (!is_wow64) return STATUS_NOT_IMPLEMENTED; if (!is_wow64) return STATUS_NOT_IMPLEMENTED;
if (((ULONG_PTR)old_value >> 16) == 0) return STATUS_ACCESS_VIOLATION;
*old_value = !ntdll_get_thread_data()->wow64_redir; *old_value = !ntdll_get_thread_data()->wow64_redir;
ntdll_get_thread_data()->wow64_redir = !disable; ntdll_get_thread_data()->wow64_redir = !disable;
return STATUS_SUCCESS; return STATUS_SUCCESS;

5
dlls/ntdll/tests/directory.c
View File

@ -287,6 +287,11 @@ static void test_redirection(void)
ok( !status, "RtlWow64EnableFsRedirectionEx failed status %x\n", status ); ok( !status, "RtlWow64EnableFsRedirectionEx failed status %x\n", status );
ok( !cur, "RtlWow64EnableFsRedirectionEx got %u\n", cur ); ok( !cur, "RtlWow64EnableFsRedirectionEx got %u\n", cur );
status = pRtlWow64EnableFsRedirectionEx( TRUE, NULL );
ok( status == STATUS_ACCESS_VIOLATION, "RtlWow64EnableFsRedirectionEx failed with status %x\n", status );
status = pRtlWow64EnableFsRedirectionEx( TRUE, (void*)1 );
ok( status == STATUS_ACCESS_VIOLATION, "RtlWow64EnableFsRedirectionEx failed with status %x\n", status );
status = pRtlWow64EnableFsRedirection( FALSE ); status = pRtlWow64EnableFsRedirection( FALSE );
ok( !status, "RtlWow64EnableFsRedirectionEx failed status %x\n", status ); ok( !status, "RtlWow64EnableFsRedirectionEx failed status %x\n", status );
status = pRtlWow64EnableFsRedirectionEx( FALSE, &cur ); status = pRtlWow64EnableFsRedirectionEx( FALSE, &cur );