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authorAhmed S. Darwish <darwish.07@gmail.com>2008-03-06 18:09:10 +0200
committerJames Morris <jmorris@namei.org>2008-04-19 10:00:51 +1000
commit076c54c5bcaed2081c0cba94a6f77c4d470236ad (patch)
tree5e8f05cab20a49922618bb3af697a6b46e610eee /security/selinux
parent04305e4aff8b0533dc05f9f6f1a34d0796bd985f (diff)
Security: Introduce security= boot parameter
Add the security= boot parameter. This is done to avoid LSM registration clashes in case of more than one bult-in module. User can choose a security module to enable at boot. If no security= boot parameter is specified, only the first LSM asking for registration will be loaded. An invalid security module name will be treated as if no module has been chosen. LSM modules must check now if they are allowed to register by calling security_module_enable(ops) first. Modify SELinux and SMACK to do so. Do not let SMACK register smackfs if it was not chosen on boot. Smackfs assumes that smack hooks are registered and the initial task security setup (swapper->security) is done. Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com> Acked-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/selinux')
-rw-r--r--security/selinux/hooks.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index a2f7e9cf78c..f9927f02bc3 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -5295,6 +5295,8 @@ static int selinux_key_permission(key_ref_t key_ref,
#endif
static struct security_operations selinux_ops = {
+ .name = "selinux",
+
.ptrace = selinux_ptrace,
.capget = selinux_capget,
.capset_check = selinux_capset_check,
@@ -5492,6 +5494,11 @@ static __init int selinux_init(void)
{
struct task_security_struct *tsec;
+ if (!security_module_enable(&selinux_ops)) {
+ selinux_enabled = 0;
+ return 0;
+ }
+
if (!selinux_enabled) {
printk(KERN_INFO "SELinux: Disabled at boot.\n");
return 0;