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-rw-r--r--security/selinux/hooks.c76
1 files changed, 53 insertions, 23 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index b1ac22d23195..885a9a958b8d 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -77,7 +77,7 @@
#include "objsec.h"
#include "netif.h"
#include "xfrm.h"
-#include "selinux_netlabel.h"
+#include "netlabel.h"
#define XATTR_SELINUX_SUFFIX "selinux"
#define XATTR_NAME_SELINUX XATTR_SECURITY_PREFIX XATTR_SELINUX_SUFFIX
@@ -653,11 +653,11 @@ static int superblock_doinit(struct super_block *sb, void *data)
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]);
}
@@ -2944,7 +2944,7 @@ static int selinux_parse_skb_ipv4(struct sk_buff *skb,
int offset, ihlen, ret = -EINVAL;
struct iphdr _iph, *ih;
- offset = skb->nh.raw - skb->data;
+ offset = skb_network_offset(skb);
ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
if (ih == NULL)
goto out;
@@ -3026,7 +3026,7 @@ static int selinux_parse_skb_ipv6(struct sk_buff *skb,
int ret = -EINVAL, offset;
struct ipv6hdr _ipv6h, *ip6;
- offset = skb->nh.raw - skb->data;
+ offset = skb_network_offset(skb);
ip6 = skb_header_pointer(skb, offset, sizeof(_ipv6h), &_ipv6h);
if (ip6 == NULL)
goto out;
@@ -3123,6 +3123,34 @@ static int selinux_parse_skb(struct sk_buff *skb, struct avc_audit_data *ad,
return ret;
}
+/**
+ * selinux_skb_extlbl_sid - Determine the external label of a packet
+ * @skb: the packet
+ * @base_sid: the SELinux SID to use as a context for MLS only external labels
+ * @sid: the packet's SID
+ *
+ * Description:
+ * Check the various different forms of external packet labeling and determine
+ * the external SID for the packet.
+ *
+ */
+static void selinux_skb_extlbl_sid(struct sk_buff *skb,
+ u32 base_sid,
+ u32 *sid)
+{
+ u32 xfrm_sid;
+ u32 nlbl_sid;
+
+ selinux_skb_xfrm_sid(skb, &xfrm_sid);
+ if (selinux_netlbl_skbuff_getsid(skb,
+ (xfrm_sid == SECSID_NULL ?
+ base_sid : xfrm_sid),
+ &nlbl_sid) != 0)
+ nlbl_sid = SECSID_NULL;
+
+ *sid = (nlbl_sid == SECSID_NULL ? xfrm_sid : nlbl_sid);
+}
+
/* socket security operations */
static int socket_has_perm(struct task_struct *task, struct socket *sock,
u32 perms)
@@ -3664,9 +3692,7 @@ static int selinux_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *
if (sock && sock->sk->sk_family == PF_UNIX)
selinux_get_inode_sid(SOCK_INODE(sock), &peer_secid);
else if (skb)
- security_skb_extlbl_sid(skb,
- SECINITSID_UNLABELED,
- &peer_secid);
+ selinux_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &peer_secid);
if (peer_secid == SECSID_NULL)
err = -EINVAL;
@@ -3727,7 +3753,7 @@ static int selinux_inet_conn_request(struct sock *sk, struct sk_buff *skb,
u32 newsid;
u32 peersid;
- security_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &peersid);
+ selinux_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &peersid);
if (peersid == SECSID_NULL) {
req->secid = sksec->sid;
req->peer_secid = SECSID_NULL;
@@ -3765,7 +3791,7 @@ static void selinux_inet_conn_established(struct sock *sk,
{
struct sk_security_struct *sksec = sk->sk_security;
- security_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &sksec->peer_sid);
+ selinux_skb_extlbl_sid(skb, SECINITSID_UNLABELED, &sksec->peer_sid);
}
static void selinux_req_classify_flow(const struct request_sock *req,
@@ -3786,7 +3812,7 @@ static int selinux_nlmsg_perm(struct sock *sk, struct sk_buff *skb)
err = -EINVAL;
goto out;
}
- nlh = (struct nlmsghdr *)skb->data;
+ nlh = nlmsg_hdr(skb);
err = selinux_nlmsg_lookup(isec->sclass, nlh->nlmsg_type, &perm);
if (err) {
@@ -4434,7 +4460,7 @@ static int selinux_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
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 +4477,7 @@ static int selinux_register_security (const char *name, struct security_operatio
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;
}
@@ -4468,11 +4494,12 @@ static void selinux_d_instantiate (struct dentry *dentry, struct inode *inode)
}
static int selinux_getprocattr(struct task_struct *p,
- char *name, void *value, size_t size)
+ char *name, char **value)
{
struct task_security_struct *tsec;
u32 sid;
int error;
+ unsigned len;
if (current != p) {
error = task_has_perm(current, p, PROCESS__GETATTR);
@@ -4500,7 +4527,10 @@ static int selinux_getprocattr(struct task_struct *p,
if (!sid)
return 0;
- return selinux_getsecurity(sid, value, size);
+ error = security_sid_to_context(sid, value, &len);
+ if (error)
+ return error;
+ return len;
}
static int selinux_setprocattr(struct task_struct *p,
@@ -4889,9 +4919,9 @@ static __init int selinux_init(void)
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 +4937,10 @@ static __init int selinux_init(void)
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 +4998,9 @@ static int __init selinux_nf_ip_init(void)
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 +5022,7 @@ __initcall(selinux_nf_ip_init);
#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)
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-12 02:47:41 +0100