Fix #81106 patch for 2.4; bug #82479.

(Portage version: 2.0.51.16)

3 files changed, 90 insertions, 3 deletions

diff --git a/sys-kernel/ck-sources/ChangeLog b/sys-kernel/ck-sources/ChangeLog
index bf0b2a5531cf..193310053b94 100644
--- a/sys-kernel/ck-sources/ChangeLog
+++ b/sys-kernel/ck-sources/ChangeLog
@@ -1,6 +1,10 @@
 # ChangeLog for sys-kernel/ck-sources
 # Copyright 2002-2005 Gentoo Foundation; Distributed under the GPL v2
-# $Header: /var/cvsroot/gentoo-x86/sys-kernel/ck-sources/ChangeLog,v 1.86 2005/02/16 20:40:20 plasmaroo Exp $
+# $Header: /var/cvsroot/gentoo-x86/sys-kernel/ck-sources/ChangeLog,v 1.87 2005/02/18 19:55:15 plasmaroo Exp $
+
+  18 Feb 2005; <plasmaroo@gentoo.org> ck-sources-2.4.28-r3.ebuild,
+  +files/ck-sources-2.4.28.81106.patch:
+  Fix #81106 patch for 2.4; bug #82479.
 
 *ck-sources-2.4.28-r3 (15 Feb 2005)
 
diff --git a/sys-kernel/ck-sources/ck-sources-2.4.28-r3.ebuild b/sys-kernel/ck-sources/ck-sources-2.4.28-r3.ebuild
index 42b88941f47b..192a925bfbae 100644
--- a/sys-kernel/ck-sources/ck-sources-2.4.28-r3.ebuild
+++ b/sys-kernel/ck-sources/ck-sources-2.4.28-r3.ebuild
@@ -1,6 +1,6 @@
 # Copyright 1999-2005 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
-# $Header: /var/cvsroot/gentoo-x86/sys-kernel/ck-sources/ck-sources-2.4.28-r3.ebuild,v 1.1 2005/02/15 21:50:55 plasmaroo Exp $
+# $Header: /var/cvsroot/gentoo-x86/sys-kernel/ck-sources/ck-sources-2.4.28-r3.ebuild,v 1.2 2005/02/18 19:55:15 plasmaroo Exp $
 
 ETYPE="sources"
 
@@ -27,7 +27,7 @@ UNIPATCH_LIST="${DISTDIR}/patch-${PV}-lck${CKV}.bz2
 	${FILESDIR}/${P}.77666.patch
 	${FILESDIR}/${P}.78362.patch
 	${FILESDIR}/${P}.78363.patch
-	${FILESDIR}/${PN}-81106.patch"
+	${FILESDIR}/${P}.81106.patch"
 
 DESCRIPTION="Full sources for the Stock Linux kernel Con Kolivas's high performance patchset"
 HOMEPAGE="http://members.optusnet.com.au/ckolivas/kernel/"
diff --git a/sys-kernel/ck-sources/files/ck-sources-2.4.28.81106.patch b/sys-kernel/ck-sources/files/ck-sources-2.4.28.81106.patch
new file mode 100644
index 000000000000..2cc0ab84ebb8
--- /dev/null
+++ b/sys-kernel/ck-sources/files/ck-sources-2.4.28.81106.patch
@@ -0,0 +1,83 @@
+# ChangeSet
+#   2005/01/25 10:10:51+00:00 aia21@cantab.net 
+#   NTFS: Add printk rate limiting for ntfs_warning() and ntfs_error() when
+#         compiled without debug.  This avoids a possible denial of service
+#         attack.  Thanks to Carl-Daniel Hailfinger from SuSE for pointing this
+#         out.
+# 
+# <plasmaroo>: printk_ratelimit() backported from 2.6.
+#
+diff -Nru a/fs/ntfs/debug.c b/fs/ntfs/debug.c
+--- a/fs/ntfs/debug.c	2005-02-15 12:38:26 -08:00
++++ b/fs/ntfs/debug.c	2005-02-15 12:38:26 -08:00
+@@ -25,6 +25,48 @@
+ #endif
+ 
+ #include "debug.h"
++#include <linux/sched.h>
++
++/* minimum time in jiffies between messages */
++int printk_ratelimit_jiffies = 5*HZ;
++
++/* number of messages we send before ratelimiting */
++int printk_ratelimit_burst = 10;
++
++/*
++ * printk rate limiting, lifted from the networking subsystem.
++ *
++ * This enforces a rate limit: not more than one kernel message
++ * every printk_ratelimit_jiffies to make a denial-of-service
++ * attack impossible.
++ */
++int printk_ratelimit(void)
++{
++	static spinlock_t ratelimit_lock = SPIN_LOCK_UNLOCKED;
++	static unsigned long toks = 10*5*HZ;
++	static unsigned long last_msg;
++	static int missed;
++	unsigned long flags;
++	unsigned long now = jiffies;
++
++	spin_lock_irqsave(&ratelimit_lock, flags);
++	toks += now - last_msg;
++	last_msg = now;
++	if (toks > (printk_ratelimit_burst * printk_ratelimit_jiffies))
++		toks = printk_ratelimit_burst * printk_ratelimit_jiffies;
++	if (toks >= printk_ratelimit_jiffies) {
++		int lost = missed;
++		missed = 0;
++		toks -= printk_ratelimit_jiffies;
++		spin_unlock_irqrestore(&ratelimit_lock, flags);
++		if (lost)
++			printk(KERN_WARNING "printk: %d messages suppressed.\n", lost);
++		return 1;
++	}
++	missed++;
++	spin_unlock_irqrestore(&ratelimit_lock, flags);
++	return 0;
++}
+ 
+ /*
+  * A static buffer to hold the error string being displayed and a spinlock
+@@ -53,6 +53,10 @@
+ 	va_list args;
+ 	int flen = 0;
+ 
++#ifndef DEBUG
++	if (!printk_ratelimit())
++		return;
++#endif
+ 	if (function)
+ 		flen = strlen(function);
+ 	spin_lock(&err_buf_lock);
+@@ -93,6 +97,10 @@
+ 	va_list args;
+ 	int flen = 0;
+ 
++#ifndef DEBUG
++	if (!printk_ratelimit())
++		return;
++#endif
+ 	if (function)
+ 		flen = strlen(function);
+ 	spin_lock(&err_buf_lock);