Cygwin: fork: fix child process permissions, take 3

Per MSDN VirtualQueryEx requires PROCESS_QUERY_INFORMATION.
Testing showed that PROCESS_QUERY_LIMITED_INFORMATION is sufficient
since Windows 8.1.  The assumption that Windows 8 is the same as
Windows 8 was not correct, it requires PROCESS_QUERY_INFORMATION
as well.

Fix that by splitting the Windows 8 wincaps into one for Windows 8
and one for Windows 8.1.  Set needs_query_information for Windows 8.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

1 files changed, 28 insertions, 1 deletions

diff --git a/winsup/cygwin/wincap.cc b/winsup/cygwin/wincap.cc
index 78cc41133..5bc9c3778 100644
--- a/winsup/cygwin/wincap.cc
+++ b/winsup/cygwin/wincap.cc
@@ -73,6 +73,31 @@ wincaps wincap_8 __attribute__((section (".cygwin_dll_common"), shared)) = {
   {
     is_server:false,
     needs_count_in_si_lpres2:false,
+    needs_query_information:true,
+    has_gaa_largeaddress_bug:false,
+    has_broken_alloc_console:true,
+    has_console_logon_sid:true,
+    has_precise_system_time:true,
+    has_microsoft_accounts:true,
+    has_processor_groups:true,
+    has_broken_prefetchvm:false,
+    has_new_pebteb_region:false,
+    has_broken_whoami:false,
+    has_unprivileged_createsymlink:false,
+    has_unbiased_interrupt_time:true,
+    has_precise_interrupt_time:false,
+    has_posix_unlink_semantics:false,
+    has_case_sensitive_dirs:false,
+    has_posix_rename_semantics:false,
+    no_msv1_0_s4u_logon_in_wow64:false,
+  },
+};
+
+wincaps wincap_8_1 __attribute__((section (".cygwin_dll_common"), shared)) = {
+  def_guard_pages:2,
+  {
+    is_server:false,
+    needs_count_in_si_lpres2:false,
     needs_query_information:false,
     has_gaa_largeaddress_bug:false,
     has_broken_alloc_console:true,
@@ -273,9 +298,11 @@ wincapc::init ()
 	      caps = &wincap_7;
 	      break;
 	    case 2:
-	    case 3:
 	      caps = &wincap_8;
 	      break;
+	    case 3:
+	      caps = &wincap_8_1;
+	      break;
 	    default:
 	      caps = &wincap_10_1507;
 	      break;