Reassign printk levels in selinux kernel code
Below is a patch which demotes many printk lines to KERN_DEBUG from
KERN_INFO. It should help stop the spamming of logs with messages in
which users are not interested nor is there any action that users should
take. It also promotes some KERN_INFO to KERN_ERR such as when there
are improper attempts to register/unregister security modules.
A similar patch was discussed a while back on list:
http://marc.theaimsgroup.com/?t=116656343500003&r=1&w=2
This patch addresses almost all of the issues raised. I believe the
only advice not taken was in the demoting of messages related to
undefined permissions and classes.
Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
security/selinux/hooks.c | 20 ++++++++++----------
security/selinux/ss/avtab.c | 2 +-
security/selinux/ss/policydb.c | 6 +++---
security/selinux/ss/sidtab.c | 2 +-
4 files changed, 15 insertions(+), 15 deletions(-)
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index b1ac22d..19a385e 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -653,11 +653,11 @@
sbsec->initialized = 1;
if (sbsec->behavior > ARRAY_SIZE(labeling_behaviors)) {
- printk(KERN_INFO "SELinux: initialized (dev %s, type %s), unknown behavior\n",
+ printk(KERN_ERR "SELinux: initialized (dev %s, type %s), unknown behavior\n",
sb->s_id, sb->s_type->name);
}
else {
- printk(KERN_INFO "SELinux: initialized (dev %s, type %s), %s\n",
+ printk(KERN_DEBUG "SELinux: initialized (dev %s, type %s), %s\n",
sb->s_id, sb->s_type->name,
labeling_behaviors[sbsec->behavior-1]);
}
@@ -4434,7 +4434,7 @@
static int selinux_register_security (const char *name, struct security_operations *ops)
{
if (secondary_ops != original_ops) {
- printk(KERN_INFO "%s: There is already a secondary security "
+ printk(KERN_ERR "%s: There is already a secondary security "
"module registered.\n", __FUNCTION__);
return -EINVAL;
}
@@ -4451,7 +4451,7 @@
static int selinux_unregister_security (const char *name, struct security_operations *ops)
{
if (ops != secondary_ops) {
- printk (KERN_INFO "%s: trying to unregister a security module "
+ printk(KERN_ERR "%s: trying to unregister a security module "
"that is not registered.\n", __FUNCTION__);
return -EINVAL;
}
@@ -4889,9 +4889,9 @@
panic("SELinux: Unable to register with kernel.\n");
if (selinux_enforcing) {
- printk(KERN_INFO "SELinux: Starting in enforcing mode\n");
+ printk(KERN_DEBUG "SELinux: Starting in enforcing mode\n");
} else {
- printk(KERN_INFO "SELinux: Starting in permissive mode\n");
+ printk(KERN_DEBUG "SELinux: Starting in permissive mode\n");
}
#ifdef CONFIG_KEYS
@@ -4907,10 +4907,10 @@
void selinux_complete_init(void)
{
- printk(KERN_INFO "SELinux: Completing initialization.\n");
+ printk(KERN_DEBUG "SELinux: Completing initialization.\n");
/* Set up any superblocks initialized prior to the policy load. */
- printk(KERN_INFO "SELinux: Setting up existing superblocks.\n");
+ printk(KERN_DEBUG "SELinux: Setting up existing superblocks.\n");
spin_lock(&sb_lock);
spin_lock(&sb_security_lock);
next_sb:
@@ -4968,9 +4968,9 @@
if (!selinux_enabled)
goto out;
-
- printk(KERN_INFO "SELinux: Registering netfilter hooks\n");
-
+
+ printk(KERN_DEBUG "SELinux: Registering netfilter hooks\n");
+
err = nf_register_hook(&selinux_ipv4_op);
if (err)
panic("SELinux: nf_register_hook for IPv4: error %d\n", err);
@@ -4992,7 +4992,7 @@
#ifdef CONFIG_SECURITY_SELINUX_DISABLE
static void selinux_nf_ip_exit(void)
{
- printk(KERN_INFO "SELinux: Unregistering netfilter hooks\n");
+ printk(KERN_DEBUG "SELinux: Unregistering netfilter hooks\n");
nf_unregister_hook(&selinux_ipv4_op);
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
diff --git a/security/selinux/ss/avtab.c b/security/selinux/ss/avtab.c
index 9142073..3122908 100644
--- a/security/selinux/ss/avtab.c
+++ b/security/selinux/ss/avtab.c
@@ -277,7 +277,7 @@
}
}
- printk(KERN_INFO "%s: %d entries and %d/%d buckets used, longest "
+ printk(KERN_DEBUG "%s: %d entries and %d/%d buckets used, longest "
"chain length %d\n", tag, h->nel, slots_used, AVTAB_SIZE,
max_chain_len);
}
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index cd79c63..0ac1021 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -374,7 +374,7 @@
struct hashtab_info info;
hashtab_stat(h, &info);
- printk(KERN_INFO "%s: %d entries and %d/%d buckets used, "
+ printk(KERN_DEBUG "%s: %d entries and %d/%d buckets used, "
"longest chain length %d\n", symtab_name[i], h->nel,
info.slots_used, h->size, info.max_chain_len);
}
@@ -391,14 +391,14 @@
{
int i, rc = 0;
- printk(KERN_INFO "security: %d users, %d roles, %d types, %d bools",
+ printk(KERN_DEBUG "security: %d users, %d roles, %d types, %d bools",
p->p_users.nprim, p->p_roles.nprim, p->p_types.nprim, p->p_bools.nprim);
if (selinux_mls_enabled)
printk(", %d sens, %d cats", p->p_levels.nprim,
p->p_cats.nprim);
printk("\n");
- printk(KERN_INFO "security: %d classes, %d rules\n",
+ printk(KERN_DEBUG "security: %d classes, %d rules\n",
p->p_classes.nprim, p->te_avtab.nel);
#ifdef DEBUG_HASHES
diff --git a/security/selinux/ss/sidtab.c b/security/selinux/ss/sidtab.c
index d78f9ff..53a54a7 100644
--- a/security/selinux/ss/sidtab.c
+++ b/security/selinux/ss/sidtab.c
@@ -253,7 +253,7 @@
}
}
- printk(KERN_INFO "%s: %d entries and %d/%d buckets used, longest "
+ printk(KERN_DEBUG "%s: %d entries and %d/%d buckets used, longest "
"chain length %d\n", tag, h->nel, slots_used, SIDTAB_SIZE,
max_chain_len);
}