From 9691d83c537b8c03e9fe17194014f9e37b7d628f Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Mon, 15 Jan 2007 22:31:14 +0000
Subject: * nscd/connections.c (serv2db): Change type into structure which

	also says whether this is a request for data.  Renamed to
	servinfo.  All users changed.
	(handle_request): Much simpler test whether we should search the cache.
---
 ChangeLog          |  5 +++++
 nscd/connections.c | 55 ++++++++++++++++++++++++++++--------------------------
 2 files changed, 34 insertions(+), 26 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index a96467a59b..526c988500 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2007-01-15  Ulrich Drepper  <drepper@redhat.com>
 
+	* nscd/connections.c (serv2db): Change type into structure which
+	also says whether this is a request for data.  Renamed to
+	servinfo.  All users changed.
+	(handle_request): Much simpler test whether we should search the cache.
+
 	* nscd/connections.c (handle_request): Fix thinko in selinux test
 	invocation.
 
diff --git a/nscd/connections.c b/nscd/connections.c
index 97287bc7ab..179b0a332f 100644
--- a/nscd/connections.c
+++ b/nscd/connections.c
@@ -181,24 +181,31 @@ struct database_dyn dbs[lastdb] =
 
 
 /* Mapping of request type to database.  */
-static struct database_dyn *const serv2db[LASTREQ] =
+static struct
 {
-  [GETPWBYNAME] = &dbs[pwddb],
-  [GETPWBYUID] = &dbs[pwddb],
-  [GETGRBYNAME] = &dbs[grpdb],
-  [GETGRBYGID] = &dbs[grpdb],
-  [GETHOSTBYNAME] = &dbs[hstdb],
-  [GETHOSTBYNAMEv6] = &dbs[hstdb],
-  [GETHOSTBYADDR] = &dbs[hstdb],
-  [GETHOSTBYADDRv6] = &dbs[hstdb],
-  [GETFDPW] = &dbs[pwddb],
-  [GETFDGR] = &dbs[grpdb],
-  [GETFDHST] = &dbs[hstdb],
-  [GETAI] = &dbs[hstdb],
-  [INITGROUPS] = &dbs[grpdb],
-  [GETSERVBYNAME] = &dbs[servdb],
-  [GETSERVBYPORT] = &dbs[servdb],
-  [GETFDSERV] = &dbs[servdb]
+  bool data_request;
+  struct database_dyn *db;
+} const servinfo[LASTREQ] =
+{
+  [GETPWBYNAME] = { true, &dbs[pwddb] },
+  [GETPWBYUID] = { true, &dbs[pwddb] },
+  [GETGRBYNAME] = { true, &dbs[grpdb] },
+  [GETGRBYGID] = { true, &dbs[grpdb] },
+  [GETHOSTBYNAME] = { true, &dbs[hstdb] },
+  [GETHOSTBYNAMEv6] = { true, &dbs[hstdb] },
+  [GETHOSTBYADDR] = { true, &dbs[hstdb] },
+  [GETHOSTBYADDRv6] = { true, &dbs[hstdb] },
+  [SHUTDOWN] = { false, NULL },
+  [GETSTAT] = { false, NULL },
+  [SHUTDOWN] = { false, NULL },
+  [GETFDPW] = { false, &dbs[pwddb] },
+  [GETFDGR] = { false, &dbs[grpdb] },
+  [GETFDHST] = { false, &dbs[hstdb] },
+  [GETAI] = { true, &dbs[hstdb] },
+  [INITGROUPS] = { true, &dbs[grpdb] },
+  [GETSERVBYNAME] = { true, &dbs[servdb] },
+  [GETSERVBYPORT] = { true, &dbs[servdb] },
+  [GETFDSERV] = { false, &dbs[servdb] }
 };
 
 
@@ -385,7 +392,7 @@ verify_persistent_db (void *mem, struct database_pers_head *readhead, int dbnr)
 
 	  /* Make sure the record is for this type of service.  */
 	  if (here->type >= LASTREQ
-	      || serv2db[here->type] != &dbs[dbnr])
+	      || servinfo[here->type].db != &dbs[dbnr])
 	    goto fail;
 
 	  /* Validate boolean field value.  */
@@ -942,14 +949,10 @@ cannot handle old request version %d; current version is %d"),
       && nscd_request_avc_has_perm (fd, req->type) != 0)
     return;
 
-  struct database_dyn *db = serv2db[req->type];
+  struct database_dyn *db = servinfo[req->type].db;
 
-  // XXX Clean up so that each new command need not introduce a
-  // XXX new conditional.
-  if ((__builtin_expect (req->type, GETPWBYNAME) >= GETPWBYNAME
-       && __builtin_expect (req->type, GETHOSTBYADDRv6) <= GETHOSTBYADDRv6)
-      || req->type == GETAI || req->type == INITGROUPS
-      || req->type == GETSERVBYNAME || req->type == GETSERVBYPORT)
+  /* See whether we can service the request from the cache.  */
+  if (__builtin_expect (servinfo[req->type].data_request, true))
     {
       if (__builtin_expect (debug_level, 0) > 0)
 	{
@@ -1148,7 +1151,7 @@ cannot handle old request version %d; current version is %d"),
     case GETFDHST:
     case GETFDSERV:
 #ifdef SCM_RIGHTS
-      send_ro_fd (serv2db[req->type], key, fd);
+      send_ro_fd (servinfo[req->type].db, key, fd);
 #endif
       break;
 
-- 
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