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authorJames Morris <james.l.morris@oracle.com>2017-06-21 11:30:20 +1000
committerJames Morris <james.l.morris@oracle.com>2017-06-21 11:30:20 +1000
commitcdac74ddf28e2f07319cc89446f9dea35d22d999 (patch)
treea834000d6eef03e194cc40a964191e583595b5b8 /security
parente4b0852798bc15ed1a3ed6768ef2c4d2a1cb7599 (diff)
parentf28e783ff668cf5757182f6b00d488be37226bff (diff)
Merge branch 'smack-for-4.13' of git://github.com/cschaufler/smack-next into next
Diffstat (limited to 'security')
-rw-r--r--security/smack/smack.h2
-rw-r--r--security/smack/smack_access.c19
-rw-r--r--security/smack/smack_lsm.c2
-rw-r--r--security/smack/smack_netfilter.c26
4 files changed, 31 insertions, 18 deletions
diff --git a/security/smack/smack.h b/security/smack/smack.h
index 612b810fbbc6..6a71fc7831ab 100644
--- a/security/smack/smack.h
+++ b/security/smack/smack.h
@@ -320,7 +320,7 @@ int smk_netlbl_mls(int, char *, struct netlbl_lsm_secattr *, int);
struct smack_known *smk_import_entry(const char *, int);
void smk_insert_entry(struct smack_known *skp);
struct smack_known *smk_find_entry(const char *);
-int smack_privileged(int cap);
+bool smack_privileged(int cap);
void smk_destroy_label_list(struct list_head *list);
/*
diff --git a/security/smack/smack_access.c b/security/smack/smack_access.c
index a4b2e6b94abd..1a3004189447 100644
--- a/security/smack/smack_access.c
+++ b/security/smack/smack_access.c
@@ -627,35 +627,38 @@ DEFINE_MUTEX(smack_onlycap_lock);
* Is the task privileged and allowed to be privileged
* by the onlycap rule.
*
- * Returns 1 if the task is allowed to be privileged, 0 if it's not.
+ * Returns true if the task is allowed to be privileged, false if it's not.
*/
-int smack_privileged(int cap)
+bool smack_privileged(int cap)
{
struct smack_known *skp = smk_of_current();
struct smack_known_list_elem *sklep;
+ int rc;
/*
* All kernel tasks are privileged
*/
if (unlikely(current->flags & PF_KTHREAD))
- return 1;
+ return true;
- if (!capable(cap))
- return 0;
+ rc = cap_capable(current_cred(), &init_user_ns, cap,
+ SECURITY_CAP_AUDIT);
+ if (rc)
+ return false;
rcu_read_lock();
if (list_empty(&smack_onlycap_list)) {
rcu_read_unlock();
- return 1;
+ return true;
}
list_for_each_entry_rcu(sklep, &smack_onlycap_list, list) {
if (sklep->smk_label == skp) {
rcu_read_unlock();
- return 1;
+ return true;
}
}
rcu_read_unlock();
- return 0;
+ return false;
}
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 658f5d8c7e76..463af86812c7 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -1915,7 +1915,7 @@ static int smack_file_receive(struct file *file)
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, file->f_path);
- if (S_ISSOCK(inode->i_mode)) {
+ if (inode->i_sb->s_magic == SOCKFS_MAGIC) {
sock = SOCKET_I(inode);
ssp = sock->sk->sk_security;
tsp = current_security();
diff --git a/security/smack/smack_netfilter.c b/security/smack/smack_netfilter.c
index 205b785fb400..cdeb0f3243dd 100644
--- a/security/smack/smack_netfilter.c
+++ b/security/smack/smack_netfilter.c
@@ -18,6 +18,7 @@
#include <linux/netfilter_ipv6.h>
#include <linux/netdevice.h>
#include <net/inet_sock.h>
+#include <net/net_namespace.h>
#include "smack.h"
#if IS_ENABLED(CONFIG_IPV6)
@@ -74,20 +75,29 @@ static struct nf_hook_ops smack_nf_ops[] = {
#endif /* IPV6 */
};
-static int __init smack_nf_ip_init(void)
+static int __net_init smack_nf_register(struct net *net)
+{
+ return nf_register_net_hooks(net, smack_nf_ops,
+ ARRAY_SIZE(smack_nf_ops));
+}
+
+static void __net_exit smack_nf_unregister(struct net *net)
{
- int err;
+ nf_unregister_net_hooks(net, smack_nf_ops, ARRAY_SIZE(smack_nf_ops));
+}
+static struct pernet_operations smack_net_ops = {
+ .init = smack_nf_register,
+ .exit = smack_nf_unregister,
+};
+
+static int __init smack_nf_ip_init(void)
+{
if (smack_enabled == 0)
return 0;
printk(KERN_DEBUG "Smack: Registering netfilter hooks\n");
-
- err = nf_register_hooks(smack_nf_ops, ARRAY_SIZE(smack_nf_ops));
- if (err)
- pr_info("Smack: nf_register_hooks: error %d\n", err);
-
- return 0;
+ return register_pernet_subsys(&smack_net_ops);
}
__initcall(smack_nf_ip_init);