path: root/security/smack/smack_lsm.c
diff options
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/smack/smack_lsm.c
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/smack/smack_lsm.c')
1 files changed, 6 insertions, 1 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 732ba27923c4..904bdc01a12b 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -2424,7 +2424,9 @@ static void smack_release_secctx(char *secdata, u32 seclen)
-static struct security_operations smack_ops = {
+struct security_operations smack_ops = {
+ .name = "smack",
.ptrace = smack_ptrace,
.capget = cap_capget,
.capset_check = cap_capset_check,
@@ -2557,6 +2559,9 @@ static struct security_operations smack_ops = {
static __init int smack_init(void)
+ if (!security_module_enable(&smack_ops))
+ return 0;
printk(KERN_INFO "Smack: Initializing.\n");

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