[newlib-cygwin] Cygwin: passwd/group: drop fetching case-correct group names from LDAP

[newlib-cygwin] Cygwin: passwd/group: drop fetching case-correct group names from LDAP

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=18c203fb6ebef6e363bb8633fe1673bf2b728e02

commit 18c203fb6ebef6e363bb8633fe1673bf2b728e02
Author: Corinna Vinschen <corinna@vinschen.de>
Date:   Fri Feb 22 11:04:34 2019 +0100

    Cygwin: passwd/group: drop fetching case-correct group names from LDAP
    
    Commit 4e34a39b5cdf4c3f889486b7460bea063e579d10 made sure all user and
    group names are case-correct, but it introduced a hefty performance hit
    on starting the first Cygwin process.
    
    Adding an ldap call for each AD group in a user token takes its toll in
    bigger AD environments with lots of groups in a user token.  Real-life
    example: 300 groups w/ roundtrip time to the LDAP server of 0.25 secs
    per call...
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/uinfo.cc | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/winsup/cygwin/uinfo.cc b/winsup/cygwin/uinfo.cc
index 53efc21..bfcce00 100644
--- a/winsup/cygwin/uinfo.cc
+++ b/winsup/cygwin/uinfo.cc
@@ -2427,12 +2427,7 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, cyg_ldap *pldap)
 
 	  if (is_domain_account)
 	    {
-	      /* Overwrite group name to be sure case is same as in SAM */
-	      if (is_group()
-		  && cldap->fetch_ad_account (sid, true, domain)
-		  && (val = cldap->get_account_name ()))
-		wcscpy (name, val);
-	      /* Skip the rest if creating group entries and for non-users. */
+	      /* Skip this when creating group entries and for non-users. */
 	      if (is_group() || acc_type != SidTypeUser)
 		break;
 	      /* On AD machines, use LDAP to fetch domain account infos. */