[newlib-cygwin/topic/posix_acl_funcs] get_posix_access: Fix primary group handing when multiple ACEs exist

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=a16ab1751c64557b46945d4c093b8977c0584327

commit a16ab1751c64557b46945d4c093b8977c0584327
Author: Corinna Vinschen <cori...@vinschen.de>
Date:   Thu Jan 28 14:34:11 2016 +0100

    get_posix_access: Fix primary group handing when multiple ACEs exist
    
        Handle additional ACE for primary group only as another GROUP
        entry if it's an allow ACE.  Deny ACEs don't qualify.
    
    Signed-off-by: Corinna Vinschen <cori...@vinschen.de>

Diff:
---
 winsup/cygwin/sec_acl.cc | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/winsup/cygwin/sec_acl.cc b/winsup/cygwin/sec_acl.cc
index 51003c4..be54423 100644
--- a/winsup/cygwin/sec_acl.cc
+++ b/winsup/cygwin/sec_acl.cc
@@ -829,10 +829,12 @@ get_posix_access (PSECURITY_DESCRIPTOR psd,
          else if (type == GROUP_OBJ)
            {
              /* Same for the primary group. */
-             if (saw_group_obj)
-               type = GROUP;
              if (ace->Header.AceType == ACCESS_ALLOWED_ACE_TYPE)
-               saw_group_obj = true;
+               {
+                 if (saw_group_obj)
+                   type = GROUP;
+                 saw_group_obj = true;
+               }
            }
          if ((pos = searchace (lacl, MAX_ACL_ENTRIES, type, id)) >= 0)
            {