From 3e1aa84e7f9f38815f5db9cd7654b1a9497cf6e4 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Fri, 20 Jan 2012 22:39:54 -0500 Subject: Do not cache negative results in nscd if these are transient --- nscd/aicache.c | 7 ++++--- nscd/grpcache.c | 7 ++++--- nscd/hstcache.c | 7 ++++--- nscd/initgrcache.c | 7 ++++--- nscd/pwdcache.c | 7 ++++--- nscd/servicescache.c | 7 ++++--- 6 files changed, 24 insertions(+), 18 deletions(-) (limited to 'nscd') diff --git a/nscd/aicache.c b/nscd/aicache.c index aaaf80df9d..e1f12445c8 100644 --- a/nscd/aicache.c +++ b/nscd/aicache.c @@ -1,5 +1,5 @@ /* Cache handling for host lookup. - Copyright (C) 2004-2008, 2009, 2010, 2011 Free Software Foundation, Inc. + Copyright (C) 2004-2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 2004. @@ -514,8 +514,9 @@ next_nip: if (fd != -1) TEMP_FAILURE_RETRY (send (fd, ¬found, total, MSG_NOSIGNAL)); - /* If we cannot permanently store the result, so be it. */ - if (__builtin_expect (db->negtimeout == 0, 0)) + /* If we have a transient error or cannot permanently store the + result, so be it. */ + if (rc4 == EAGAIN || __builtin_expect (db->negtimeout == 0, 0)) { /* Mark the old entry as obsolete. */ if (dh != NULL) diff --git a/nscd/grpcache.c b/nscd/grpcache.c index e9607c6f11..a698f363c7 100644 --- a/nscd/grpcache.c +++ b/nscd/grpcache.c @@ -1,5 +1,5 @@ /* Cache handling for group lookup. - Copyright (C) 1998-2008, 2009, 2011 Free Software Foundation, Inc. + Copyright (C) 1998-2008, 2009, 2011, 2012 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 1998. @@ -120,8 +120,9 @@ cache_addgr (struct database_dyn *db, int fd, request_header *req, else written = total; - /* If we cannot permanently store the result, so be it. */ - if (db->negtimeout == 0) + /* If we have a transient error or cannot permanently store + the result, so be it. */ + if (errno == EAGAIN || __builtin_expect (db->negtimeout == 0, 0)) { /* Mark the old entry as obsolete. */ if (dh != NULL) diff --git a/nscd/hstcache.c b/nscd/hstcache.c index 4d68ade98c..c72feaa02e 100644 --- a/nscd/hstcache.c +++ b/nscd/hstcache.c @@ -1,5 +1,5 @@ /* Cache handling for host lookup. - Copyright (C) 1998-2008, 2009, 2011 Free Software Foundation, Inc. + Copyright (C) 1998-2008, 2009, 2011, 2012 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 1998. @@ -141,8 +141,9 @@ cache_addhst (struct database_dyn *db, int fd, request_header *req, MSG_NOSIGNAL)) != total) all_written = false; - /* If we cannot permanently store the result, so be it. */ - if (__builtin_expect (db->negtimeout == 0, 0)) + /* If we have a transient error or cannot permanently store + the result, so be it. */ + if (errval == EAGAIN || __builtin_expect (db->negtimeout == 0, 0)) { /* Mark the old entry as obsolete. */ if (dh != NULL) diff --git a/nscd/initgrcache.c b/nscd/initgrcache.c index 4ac9942aeb..2019991d28 100644 --- a/nscd/initgrcache.c +++ b/nscd/initgrcache.c @@ -1,5 +1,5 @@ /* Cache handling for host lookup. - Copyright (C) 2004-2006, 2008, 2009, 2011 Free Software Foundation, Inc. + Copyright (C) 2004-2006, 2008, 2009, 2011, 2012 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 2004. @@ -202,8 +202,9 @@ addinitgroupsX (struct database_dyn *db, int fd, request_header *req, written = TEMP_FAILURE_RETRY (send (fd, ¬found, total, MSG_NOSIGNAL)); - /* If we cannot permanently store the result, so be it. */ - if (__builtin_expect (db->negtimeout == 0, 0)) + /* If we have a transient error or cannot permanently store + the result, so be it. */ + if (all_tryagain || __builtin_expect (db->negtimeout == 0, 0)) { /* Mark the old entry as obsolete. */ if (dh != NULL) diff --git a/nscd/pwdcache.c b/nscd/pwdcache.c index 49e130c1f0..e2ba09df46 100644 --- a/nscd/pwdcache.c +++ b/nscd/pwdcache.c @@ -1,5 +1,5 @@ /* Cache handling for passwd lookup. - Copyright (C) 1998-2008, 2009, 2011 Free Software Foundation, Inc. + Copyright (C) 1998-2008, 2009, 2011, 2012 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 1998. @@ -124,8 +124,9 @@ cache_addpw (struct database_dyn *db, int fd, request_header *req, written = TEMP_FAILURE_RETRY (send (fd, ¬found, total, MSG_NOSIGNAL)); - /* If we cannot permanently store the result, so be it. */ - if (__builtin_expect (db->negtimeout == 0, 0)) + /* If we have a transient error or cannot permanently store + the result, so be it. */ + if (errno == EAGAIN || __builtin_expect (db->negtimeout == 0, 0)) { /* Mark the old entry as obsolete. */ if (dh != NULL) diff --git a/nscd/servicescache.c b/nscd/servicescache.c index d3d5dce44e..a6337e3b0f 100644 --- a/nscd/servicescache.c +++ b/nscd/servicescache.c @@ -1,5 +1,5 @@ /* Cache handling for services lookup. - Copyright (C) 2007, 2008, 2009, 2011 Free Software Foundation, Inc. + Copyright (C) 2007, 2008, 2009, 2011, 2012 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 2007. @@ -108,8 +108,9 @@ cache_addserv (struct database_dyn *db, int fd, request_header *req, written = TEMP_FAILURE_RETRY (send (fd, ¬found, total, MSG_NOSIGNAL)); - /* If we cannot permanently store the result, so be it. */ - if (__builtin_expect (db->negtimeout == 0, 0)) + /* If we have a transient error or cannot permanently store + the result, so be it. */ + if (errval == EAGAIN || __builtin_expect (db->negtimeout == 0, 0)) { /* Mark the old entry as obsolete. */ if (dh != NULL) -- cgit 1.4.1