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GNU C Library master sources branch, master, updated. glibc-2.15-92-g3e1aa84
- From: drepper at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 21 Jan 2012 03:40:18 -0000
- Subject: GNU C Library master sources branch, master, updated. glibc-2.15-92-g3e1aa84
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http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=3e1aa84e7f9f38815f5db9cd7654b1a9497cf6e4
commit 3e1aa84e7f9f38815f5db9cd7654b1a9497cf6e4
Author: Ulrich Drepper <drepper@gmail.com>
Date: Fri Jan 20 22:39:54 2012 -0500
Do not cache negative results in nscd if these are transient
diff --git a/ChangeLog b/ChangeLog
index 3d847a5..1dda738 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2012-01-20 Ulrich Drepper <drepper@gmail.com>
+
+ * nscd/aicache.c (addhstaiX): Do not cache negative results of
+ transient errors.
+ * nscd/grpcache.c (cache_addgr): Likewise.
+ * nscd/hstcache.c (cache_addhst): Likewise.
+ * nscd/initgrcache.c (addinitgroupsX): Likewise.
+ * nscd/pwdcache.c (cache_addpw): Likewise.
+ * nscd/servicescache.c (cache_addserv): Likewise.
+
2012-01-16 Ulrich Drepper <drepper@gmail.com>
* malloc/malloc.c: Various cleanups.
diff --git a/nscd/aicache.c b/nscd/aicache.c
index aaaf80d..e1f1244 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 <drepper@redhat.com>, 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 e9607c6..a698f36 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 <drepper@cygnus.com>, 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 4d68ade..c72feaa 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 <drepper@cygnus.com>, 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 4ac9942..2019991 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 <drepper@redhat.com>, 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 49e130c..e2ba09d 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 <drepper@cygnus.com>, 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 d3d5dce..a6337e3 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 <drepper@drepper.com>, 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)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 10 ++++++++++
nscd/aicache.c | 7 ++++---
nscd/grpcache.c | 7 ++++---
nscd/hstcache.c | 7 ++++---
nscd/initgrcache.c | 7 ++++---
nscd/pwdcache.c | 7 ++++---
nscd/servicescache.c | 7 ++++---
7 files changed, 34 insertions(+), 18 deletions(-)
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