From: Jim Meyering <jim@meyering.net>
Date: Thu, 5 Jul 2007 08:06:33 +0000 (+0000)
Subject: Don't let endgrent clobber errno, no matter how improbable.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=72c48440c1f459e2659270598b771c69e9c08994;p=pspp

Don't let endgrent clobber errno, no matter how improbable.
* lib/getugroups.c (getugroups): Save and restore errno around
endgrent call.
---

diff --git a/ChangeLog b/ChangeLog
index b2bd707fb4..ec8b45fd1a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2007-07-05  Jim Meyering  <jim@meyering.net>
 
+	Don't let endgrent clobber errno, no matter how improbable.
+	* lib/getugroups.c (getugroups): Save and restore errno around
+	endgrent call.
+
 	Close the group DB even when failing with 2^31 or more members.
 	* lib/getugroups.c (getugroups): Don't return without calling endgrent.
 
diff --git a/lib/getugroups.c b/lib/getugroups.c
index d63a6072e4..43d0650a0f 100644
--- a/lib/getugroups.c
+++ b/lib/getugroups.c
@@ -99,7 +99,11 @@ getugroups (int maxcount, GETGROUPS_T *grouplist, char const *username,
     }
 
  done:
-  endgrent ();
+  {
+    int saved_errno = errno;
+    endgrent ();
+    errno = saved_errno;
+  }
 
   return count;
 }