[PATCH] Cygwin: pty: Change how to determine if running as service or not.
Takashi Yano
takashi.yano@nifty.ne.jp
Wed Nov 6 12:09:00 GMT 2019
---
winsup/cygwin/fhandler_tty.cc | 17 +++--------------
1 file changed, 3 insertions(+), 14 deletions(-)
diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index f87ac73f2..2b4ad6e58 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -3095,22 +3095,11 @@ pty_master_fwd_thread (VOID *arg)
the helper process is running as privileged user while
slave process is not. This function is used to determine
if the process is running as a srvice or not. */
-static bool
+inline static bool
is_running_as_service (void)
{
- DWORD dwSize = 0;
- PTOKEN_GROUPS pGroupInfo;
- tmp_pathbuf tp;
- pGroupInfo = (PTOKEN_GROUPS) tp.w_get ();
- NtQueryInformationToken (hProcToken, TokenGroups, pGroupInfo,
- 2 * NT_MAX_PATH, &dwSize);
- for (DWORD i=0; i<pGroupInfo->GroupCount; i++)
- if (RtlEqualSid (well_known_service_sid, pGroupInfo->Groups[i].Sid))
- return true;
- for (DWORD i=0; i<pGroupInfo->GroupCount; i++)
- if (RtlEqualSid (well_known_interactive_sid, pGroupInfo->Groups[i].Sid))
- return false;
- return true;
+ return check_token_membership (well_known_service_sid)
+ || cygheap->user.saved_sid () == well_known_system_sid;
}
bool
--
2.21.0
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