glibc/nss-database.patch

From a6856a042a0669ac3f8bc675e8e1de14b5d09b94 Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@suse.de>
Date: Thu, 24 Jan 2013 12:32:09 +0100
Subject: [PATCH] Properly cache the result from looking up the nss database
 config

	[BZ #15048]
	* nscd/aicache.c (addhstaiX): Properly use the cache variable for
	the nss database lookup.
	* nscd/initgrcache.c (addinitgroupsX): Likewise.
	* sysdeps/posix/getaddrinfo.c (gaih_inet): Likewise.
---
 nscd/aicache.c              | 15 +++++++--------
 nscd/initgrcache.c          | 15 +++++++--------
 sysdeps/posix/getaddrinfo.c | 14 ++++++--------
 3 files changed, 20 insertions(+), 24 deletions(-)

Index: glibc-2.17.90/nscd/aicache.c
===================================================================
--- glibc-2.17.90.orig/nscd/aicache.c
+++ glibc-2.17.90/nscd/aicache.c
@@ -86,20 +86,19 @@ addhstaiX (struct database_dyn *db, int
     }
 
   static service_user *hosts_database;
-  service_user *nip = NULL;
+  service_user *nip;
   int no_more;
   int rc6 = 0;
   int rc4 = 0;
   int herrno = 0;
 
-  if (hosts_database != NULL)
-    {
-      nip = hosts_database;
-      no_more = 0;
-    }
-  else
+  if (hosts_database == NULL)
     no_more = __nss_database_lookup ("hosts", NULL,
-				     "dns [!UNAVAIL=return] files", &nip);
+				     "dns [!UNAVAIL=return] files",
+				     &hosts_database);
+  else
+    no_more = 0;
+  nip = hosts_database;
 
   if (__res_maybe_init (&_res, 0) == -1)
 	    no_more = 1;
Index: glibc-2.17.90/nscd/initgrcache.c
===================================================================
--- glibc-2.17.90.orig/nscd/initgrcache.c
+++ glibc-2.17.90/nscd/initgrcache.c
@@ -80,17 +80,16 @@ addinitgroupsX (struct database_dyn *db,
     }
 
   static service_user *group_database;
-  service_user *nip = NULL;
+  service_user *nip;
   int no_more;
 
-  if (group_database != NULL)
-    {
-      nip = group_database;
-      no_more = 0;
-    }
-  else
+  if (group_database == NULL)
     no_more = __nss_database_lookup ("group", NULL,
-				     "compat [NOTFOUND=return] files", &nip);
+				     "compat [NOTFOUND=return] files",
+				     &group_database);
+  else
+    no_more = 0;
+  nip = group_database;
 
  /* We always use sysconf even if NGROUPS_MAX is defined.  That way, the
      limit can be raised in the kernel configuration without having to
Index: glibc-2.17.90/sysdeps/posix/getaddrinfo.c
===================================================================
--- glibc-2.17.90.orig/sysdeps/posix/getaddrinfo.c
+++ glibc-2.17.90/sysdeps/posix/getaddrinfo.c
@@ -558,7 +558,7 @@ gaih_inet (const char *name, const struc
 	  struct gaih_addrtuple **pat = &at;
 	  int no_data = 0;
 	  int no_inet6_data = 0;
-	  service_user *nip = NULL;
+	  service_user *nip;
 	  enum nss_status inet6_status = NSS_STATUS_UNAVAIL;
 	  enum nss_status status = NSS_STATUS_UNAVAIL;
 	  int no_more;
@@ -791,15 +791,13 @@ gaih_inet (const char *name, const struc
 	    }
 #endif
 
-	  if (__nss_hosts_database != NULL)
-	    {
-	      no_more = 0;
-	      nip = __nss_hosts_database;
-	    }
-	  else
+	  if (__nss_hosts_database == NULL)
 	    no_more = __nss_database_lookup ("hosts", NULL,
 					     "dns [!UNAVAIL=return] files",
-					     &nip);
+					     &__nss_hosts_database);
+	  else
+	    no_more = 0;
+	  nip = __nss_hosts_database;
 
 	  /* Initialize configurations.  */
 	  if (__builtin_expect (!_res_hconf.initialized, 0))