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authorPaul Moore <paul.moore@hp.com>2006-08-29 17:53:48 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-22 15:18:34 -0700
commit99f59ed073d3c1b890690064ab285a201dea2e35 (patch)
tree0f6ae012cf4f988d3ae0c665fd3b12ea05409ec8 /security
parentfc747e82b40ea50a62eb2aef55bedd4465607cb0 (diff)
downloadlinux-linaro-stable-99f59ed073d3c1b890690064ab285a201dea2e35.tar.gz
[NetLabel]: Correctly initialize the NetLabel fields.
Fix a problem where the NetLabel specific fields of the sk_security_struct structure were not being initialized early enough in some cases. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'security')
-rw-r--r--security/selinux/hooks.c6
-rw-r--r--security/selinux/include/selinux_netlabel.h18
-rw-r--r--security/selinux/ss/services.c45
3 files changed, 67 insertions, 2 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 180b26b97d2d..5a66c4c09f7a 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -281,6 +281,8 @@ static int sk_alloc_security(struct sock *sk, int family, gfp_t priority)
ssec->sid = SECINITSID_UNLABELED;
sk->sk_security = ssec;
+ selinux_netlbl_sk_security_init(ssec, family);
+
return 0;
}
@@ -3585,6 +3587,8 @@ static void selinux_sk_clone_security(const struct sock *sk, struct sock *newsk)
newssec->sid = ssec->sid;
newssec->peer_sid = ssec->peer_sid;
+
+ selinux_netlbl_sk_clone_security(ssec, newssec);
}
static void selinux_sk_getsecid(struct sock *sk, u32 *secid)
@@ -3648,6 +3652,8 @@ static void selinux_inet_csk_clone(struct sock *newsk,
new socket in sync, but we don't have the isec available yet.
So we will wait until sock_graft to do it, by which
time it will have been created and available. */
+
+ selinux_netlbl_sk_security_init(newsksec, req->rsk_ops->family);
}
static void selinux_req_classify_flow(const struct request_sock *req,
diff --git a/security/selinux/include/selinux_netlabel.h b/security/selinux/include/selinux_netlabel.h
index 88c463eef1e1..d885d880540e 100644
--- a/security/selinux/include/selinux_netlabel.h
+++ b/security/selinux/include/selinux_netlabel.h
@@ -39,6 +39,10 @@ int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec,
struct avc_audit_data *ad);
u32 selinux_netlbl_socket_getpeersec_stream(struct socket *sock);
u32 selinux_netlbl_socket_getpeersec_dgram(struct sk_buff *skb);
+void selinux_netlbl_sk_security_init(struct sk_security_struct *ssec,
+ int family);
+void selinux_netlbl_sk_clone_security(struct sk_security_struct *ssec,
+ struct sk_security_struct *newssec);
int __selinux_netlbl_inode_permission(struct inode *inode, int mask);
/**
@@ -115,6 +119,20 @@ static inline u32 selinux_netlbl_socket_getpeersec_dgram(struct sk_buff *skb)
return SECSID_NULL;
}
+static inline void selinux_netlbl_sk_security_init(
+ struct sk_security_struct *ssec,
+ int family)
+{
+ return;
+}
+
+static inline void selinux_netlbl_sk_clone_security(
+ struct sk_security_struct *ssec,
+ struct sk_security_struct *newssec)
+{
+ return;
+}
+
static inline int selinux_netlbl_inode_permission(struct inode *inode,
int mask)
{
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index 910afa1ffc31..835b485b2afd 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -2423,6 +2423,45 @@ netlbl_socket_setsid_return:
}
/**
+ * selinux_netlbl_sk_security_init - Setup the NetLabel fields
+ * @ssec: the sk_security_struct
+ * @family: the socket family
+ *
+ * Description:
+ * Called when a new sk_security_struct is allocated to initialize the NetLabel
+ * fields.
+ *
+ */
+void selinux_netlbl_sk_security_init(struct sk_security_struct *ssec,
+ int family)
+{
+ if (family == PF_INET)
+ ssec->nlbl_state = NLBL_REQUIRE;
+ else
+ ssec->nlbl_state = NLBL_UNSET;
+}
+
+/**
+ * selinux_netlbl_sk_clone_security - Copy the NetLabel fields
+ * @ssec: the original sk_security_struct
+ * @newssec: the cloned sk_security_struct
+ *
+ * Description:
+ * Clone the NetLabel specific sk_security_struct fields from @ssec to
+ * @newssec.
+ *
+ */
+void selinux_netlbl_sk_clone_security(struct sk_security_struct *ssec,
+ struct sk_security_struct *newssec)
+{
+ newssec->sclass = ssec->sclass;
+ if (ssec->nlbl_state != NLBL_UNSET)
+ newssec->nlbl_state = NLBL_REQUIRE;
+ else
+ newssec->nlbl_state = NLBL_UNSET;
+}
+
+/**
* selinux_netlbl_socket_post_create - Label a socket using NetLabel
* @sock: the socket to label
* @sock_family: the socket family
@@ -2440,10 +2479,11 @@ int selinux_netlbl_socket_post_create(struct socket *sock,
struct inode_security_struct *isec = SOCK_INODE(sock)->i_security;
struct sk_security_struct *sksec = sock->sk->sk_security;
+ sksec->sclass = isec->sclass;
+
if (sock_family != PF_INET)
return 0;
- sksec->sclass = isec->sclass;
sksec->nlbl_state = NLBL_REQUIRE;
return selinux_netlbl_socket_setsid(sock, sid);
}
@@ -2463,12 +2503,13 @@ void selinux_netlbl_sock_graft(struct sock *sk, struct socket *sock)
struct inode_security_struct *isec = SOCK_INODE(sock)->i_security;
struct sk_security_struct *sksec = sk->sk_security;
+ sksec->sclass = isec->sclass;
+
if (sk->sk_family != PF_INET)
return;
sksec->nlbl_state = NLBL_REQUIRE;
sksec->peer_sid = sksec->sid;
- sksec->sclass = isec->sclass;
/* Try to set the NetLabel on the socket to save time later, if we fail
* here we will pick up the pieces in later calls to