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Subject[PATCH V2] netfilter/iptables: Fix log-level processing
From
Date
auto75914331@hushmail.com reports that iptables does not correctly
output the KERN_<level>.

$IPTABLES -A RULE_0_in -j LOG --log-level notice --log-prefix "DENY in: "

result with linux 3.6-rc5
Sep 12 06:37:29 xxxxx kernel: <5>DENY in: IN=eth0 OUT= MAC=.......

result with linux 3.5.3 and older:
Sep 9 10:43:01 xxxxx kernel: DENY in: IN=eth0 OUT= MAC......

commit 04d2c8c83d0
("printk: convert the format for KERN_<LEVEL> to a 2 byte pattern")
updated the syslog header style but did not update netfilter uses.

Do so.

Signed-off-by: Joe Perches <joe@perches.com>
cc: auto75914331@hushmail.com
---
v2: Use KERN_SOH and string concatenation instead of "%c" KERN_SOH_ASCII
as suggested by Eric Dumazet.

net/bridge/netfilter/ebt_log.c | 2 +-
net/netfilter/xt_LOG.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/bridge/netfilter/ebt_log.c b/net/bridge/netfilter/ebt_log.c
index f88ee53..92de5e5 100644
--- a/net/bridge/netfilter/ebt_log.c
+++ b/net/bridge/netfilter/ebt_log.c
@@ -80,7 +80,7 @@ ebt_log_packet(u_int8_t pf, unsigned int hooknum,
unsigned int bitmask;

spin_lock_bh(&ebt_log_lock);
- printk("<%c>%s IN=%s OUT=%s MAC source = %pM MAC dest = %pM proto = 0x%04x",
+ printk(KERN_SOH "%c%s IN=%s OUT=%s MAC source = %pM MAC dest = %pM proto = 0x%04x",
'0' + loginfo->u.log.level, prefix,
in ? in->name : "", out ? out->name : "",
eth_hdr(skb)->h_source, eth_hdr(skb)->h_dest,
diff --git a/net/netfilter/xt_LOG.c b/net/netfilter/xt_LOG.c
index ff5f75f..d1609dd 100644
--- a/net/netfilter/xt_LOG.c
+++ b/net/netfilter/xt_LOG.c
@@ -436,8 +436,8 @@ log_packet_common(struct sbuff *m,
const struct nf_loginfo *loginfo,
const char *prefix)
{
- sb_add(m, "<%d>%sIN=%s OUT=%s ", loginfo->u.log.level,
- prefix,
+ sb_add(m, KERN_SOH "%c%sIN=%s OUT=%s ",
+ '0' + loginfo->u.log.level, prefix,
in ? in->name : "",
out ? out->name : "");
#ifdef CONFIG_BRIDGE_NETFILTER




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