* nscd/nscd.h (struct database_dyn): Add propagate field.

	* nscd/nscd_conf.c (nscd_parse_file): Parse auto-propagate lines.
	* nscd/nscd.conf: Add auto-propagate lines.
	* nscd/connections.c (dbs): Initialize .propagate fields.
	* nscd/grpcache.c (cache_addgr): Do not add ID entry for name lookups
	and vice versa if propagation is disabled for the database.
	* nscd/pwdcache.c (cache_addpw): Likewise.

6 files changed, 42 insertions, 17 deletions

diff --git a/nscd/connections.c b/nscd/connections.c
index b24e7fb..814d1c7 100644
--- a/nscd/connections.c
+++ b/nscd/connections.c
@@ -103,6 +103,7 @@ struct database_dyn dbs[lastdb] =
     .enabled = 0,
     .check_file = 1,
     .persistent = 0,
+    .propagate = 1,
     .shared = 0,
     .max_db_size = DEFAULT_MAX_DB_SIZE,
     .filename = "/etc/passwd",
@@ -119,6 +120,7 @@ struct database_dyn dbs[lastdb] =
     .enabled = 0,
     .check_file = 1,
     .persistent = 0,
+    .propagate = 1,
     .shared = 0,
     .max_db_size = DEFAULT_MAX_DB_SIZE,
     .filename = "/etc/group",
@@ -135,6 +137,7 @@ struct database_dyn dbs[lastdb] =
     .enabled = 0,
     .check_file = 1,
     .persistent = 0,
+    .propagate = 0,		/* Not used.  */
     .shared = 0,
     .max_db_size = DEFAULT_MAX_DB_SIZE,
     .filename = "/etc/hosts",
diff --git a/nscd/grpcache.c b/nscd/grpcache.c
index 4bc9977..5a8fba4 100644
--- a/nscd/grpcache.c
+++ b/nscd/grpcache.c
@@ -342,10 +342,10 @@ cache_addgr (struct database_dyn *db, int fd, request_header *req,
 	     marked with FIRST first.  Otherwise we end up with
 	     dangling "pointers" in case a latter hash entry cannot be
 	     added.  */
-	  bool first = req->type == GETGRBYNAME;
+	  bool first = true;
 
 	  /* If the request was by GID, add that entry first.  */
-	  if (req->type != GETGRBYNAME)
+	  if (req->type == GETGRBYGID)
 	    {
 	      if (cache_add (GETGRBYGID, cp, key_offset, &dataset->head, true,
 			     db, owner) < 0)
@@ -355,12 +355,14 @@ cache_addgr (struct database_dyn *db, int fd, request_header *req,
 		  dataset->head.usable = false;
 		  goto out;
 		}
+
+	      first = false;
 	    }
 	  /* If the key is different from the name add a separate entry.  */
 	  else if (strcmp (key_copy, gr_name) != 0)
 	    {
 	      if (cache_add (GETGRBYNAME, key_copy, key_len + 1,
-			     &dataset->head, first, db, owner) < 0)
+			     &dataset->head, true, db, owner) < 0)
 		{
 		  /* Could not allocate memory.  Make sure the data gets
 		     discarded.  */
@@ -372,11 +374,13 @@ cache_addgr (struct database_dyn *db, int fd, request_header *req,
 	    }
 
 	  /* We have to add the value for both, byname and byuid.  */
-	  if (__builtin_expect (cache_add (GETGRBYNAME, gr_name, gr_name_len,
-					   &dataset->head, first, db, owner)
-				== 0, 1))
+	  if ((req->type == GETGRBYNAME || db->propagate)
+	      && __builtin_expect (cache_add (GETGRBYNAME, gr_name,
+					      gr_name_len,
+					      &dataset->head, first, db, owner)
+				   == 0, 1))
 	    {
-	      if (req->type == GETGRBYNAME)
+	      if (req->type == GETGRBYNAME && db->propagate)
 		(void) cache_add (GETGRBYGID, cp, key_offset, &dataset->head,
 				  req->type != GETGRBYNAME, db, owner);
 	    }
diff --git a/nscd/nscd.conf b/nscd/nscd.conf
index 9491e16..289eb2e 100644
--- a/nscd/nscd.conf
+++ b/nscd/nscd.conf
@@ -23,7 +23,8 @@
 #	check-files		<service> <yes|no>
 #	persistent		<service> <yes|no>
 #	shared			<service> <yes|no>
-#	max-db-szie		<service> <number bytes>
+#	max-db-size		<service> <number bytes>
+*	auto-propagate		<service> <yes|no>
 #
 # Currently supported cache names (services): passwd, group, hosts
 #
@@ -47,6 +48,7 @@
 	persistent		passwd		yes
 	shared			passwd		yes
 	max-db-size		passwd		33554432
+	auto-propagate		passwd		yes
 
 	enable-cache		group		yes
 	positive-time-to-live	group		3600
@@ -56,6 +58,7 @@
 	persistent		group		yes
 	shared			group		yes
 	max-db-size		group		33554432
+	auto-propagate		group		yes
 
 	enable-cache		hosts		yes
 	positive-time-to-live	hosts		3600
diff --git a/nscd/nscd.h b/nscd/nscd.h
index ed686be..f826c7a 100644
--- a/nscd/nscd.h
+++ b/nscd/nscd.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 1998, 1999, 2000, 2001, 2003, 2004, 2005
+/* Copyright (c) 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006
    Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
@@ -63,6 +63,7 @@ struct database_dyn
   int check_file;
   int persistent;
   int shared;
+  int propagate;
   size_t max_db_size;
   const char *filename;
   const char *db_filename;
diff --git a/nscd/nscd_conf.c b/nscd/nscd_conf.c
index 579ddd4..2048eca 100644
--- a/nscd/nscd_conf.c
+++ b/nscd/nscd_conf.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 1998, 2000, 2003, 2004, 2005 Free Software Foundation, Inc.
+/* Copyright (c) 1998,2000,2003,2004,2005,2006 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
 
@@ -256,6 +256,17 @@ nscd_parse_file (const char *fname, struct database_dyn dbs[lastdb])
 	  else
             error (0, 0, _("Must specify value for restart-interval option"));
 	}
+      else if (strcmp (entry, "auto-propagate") == 0)
+	{
+	  int idx = find_db (arg1);
+	  if (idx >= 0)
+	    {
+	      if (strcmp (arg2, "no") == 0)
+		dbs[idx].propagate = 0;
+	      else if (strcmp (arg2, "yes") == 0)
+		dbs[idx].propagate = 1;
+	    }
+	}
       else
 	error (0, 0, _("Unknown option: %s %s %s"), entry, arg1, arg2);
     }
diff --git a/nscd/pwdcache.c b/nscd/pwdcache.c
index 2daff79..01c223a 100644
--- a/nscd/pwdcache.c
+++ b/nscd/pwdcache.c
@@ -338,10 +338,10 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req,
 	     marked with FIRST first.  Otherwise we end up with
 	     dangling "pointers" in case a latter hash entry cannot be
 	     added.  */
-	  bool first = req->type == GETPWBYNAME;
+	  bool first = true;
 
 	  /* If the request was by UID, add that entry first.  */
-	  if (req->type != GETPWBYNAME)
+	  if (req->type == GETPWBYUID)
 	    {
 	      if (cache_add (GETPWBYUID, cp, key_offset, &dataset->head, true,
 			     db, owner) < 0)
@@ -351,12 +351,14 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req,
 		  dataset->head.usable = false;
 		  goto out;
 		}
+
+	      first = false;
 	    }
 	  /* If the key is different from the name add a separate entry.  */
 	  else if (strcmp (key_copy, dataset->strdata) != 0)
 	    {
 	      if (cache_add (GETPWBYNAME, key_copy, key_len + 1,
-			     &dataset->head, first, db, owner) < 0)
+			     &dataset->head, true, db, owner) < 0)
 		{
 		  /* Could not allocate memory.  Make sure the data gets
 		     discarded.  */
@@ -368,11 +370,12 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req,
 	    }
 
 	  /* We have to add the value for both, byname and byuid.  */
-	  if (__builtin_expect (cache_add (GETPWBYNAME, dataset->strdata,
-					   pw_name_len, &dataset->head, first,
-					   db, owner) == 0, 1))
+	  if ((req->type == GETPWBYNAME || db->propagate)
+	      && __builtin_expect (cache_add (GETPWBYNAME, dataset->strdata,
+					      pw_name_len, &dataset->head,
+					      first, db, owner) == 0, 1))
 	    {
-	      if (req->type == GETPWBYNAME)
+	      if (req->type == GETPWBYNAME && db->propagate)
 		(void) cache_add (GETPWBYUID, cp, key_offset, &dataset->head,
 				  req->type != GETPWBYNAME, db, owner);
 	    }