diff options
Diffstat (limited to 'sys-kernel/gentoo-sources/files/gentoo-sources-2.4.81106.patch')
| -rw-r--r-- | sys-kernel/gentoo-sources/files/gentoo-sources-2.4.81106.patch | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/sys-kernel/gentoo-sources/files/gentoo-sources-2.4.81106.patch b/sys-kernel/gentoo-sources/files/gentoo-sources-2.4.81106.patch deleted file mode 100644 index e58cc184ce4b..000000000000 --- a/sys-kernel/gentoo-sources/files/gentoo-sources-2.4.81106.patch +++ /dev/null @@ -1,83 +0,0 @@ -# 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 ntfs_debug_printk_ratelimit_jiffies = 5*HZ; -+ -+/* number of messages we send before ratelimiting */ -+int ntfs_debug_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 ntfs_debug_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 > (ntfs_debug_printk_ratelimit_burst * ntfs_debug_printk_ratelimit_jiffies)) -+ toks = ntfs_debug_printk_ratelimit_burst * ntfs_debug_printk_ratelimit_jiffies; -+ if (toks >= ntfs_debug_printk_ratelimit_jiffies) { -+ int lost = missed; -+ missed = 0; -+ toks -= ntfs_debug_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 (!ntfs_debug_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 (!ntfs_debug_printk_ratelimit()) -+ return; -+#endif - if (function) - flen = strlen(function); - spin_lock(&err_buf_lock); |