Introduce mac_check_system_settime(), a MAC check allowing policies to

augment the system policy for changing the system time.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories

10 files changed, 106 insertions, 0 deletions

diff --git a/sys/security/mac/mac_framework.c b/sys/security/mac/mac_framework.c
index f4cfa8a..ff5c43a 100644
--- a/sys/security/mac/mac_framework.c
+++ b/sys/security/mac/mac_framework.c
@@ -2492,6 +2492,19 @@ mac_check_system_reboot(struct ucred *cred, int howto)
 }
 
 int
+mac_check_system_settime(struct ucred *cred)
+{
+	int error;
+
+	if (!mac_enforce_system)
+		return (0);
+
+	MAC_CHECK(check_system_settime, cred);
+
+	return (error);
+}
+
+int
 mac_check_system_swapon(struct ucred *cred, struct vnode *vp)
 {
 	int error;
diff --git a/sys/security/mac/mac_framework.h b/sys/security/mac/mac_framework.h
index e50aaa7..efa811d 100644
--- a/sys/security/mac/mac_framework.h
+++ b/sys/security/mac/mac_framework.h
@@ -255,6 +255,7 @@ int	mac_check_socket_receive(struct ucred *cred, struct socket *so);
 int	mac_check_socket_send(struct ucred *cred, struct socket *so);
 int	mac_check_socket_visible(struct ucred *cred, struct socket *so);
 int	mac_check_system_reboot(struct ucred *cred, int howto);
+int	mac_check_system_settime(struct ucred *cred);
 int	mac_check_system_swapon(struct ucred *cred, struct vnode *vp);
 int	mac_check_system_sysctl(struct ucred *cred, int *name,
 	    u_int namelen, void *old, size_t *oldlenp, int inkernel,
diff --git a/sys/security/mac/mac_internal.h b/sys/security/mac/mac_internal.h
index f4cfa8a..ff5c43a 100644
--- a/sys/security/mac/mac_internal.h
+++ b/sys/security/mac/mac_internal.h
@@ -2492,6 +2492,19 @@ mac_check_system_reboot(struct ucred *cred, int howto)
 }
 
 int
+mac_check_system_settime(struct ucred *cred)
+{
+	int error;
+
+	if (!mac_enforce_system)
+		return (0);
+
+	MAC_CHECK(check_system_settime, cred);
+
+	return (error);
+}
+
+int
 mac_check_system_swapon(struct ucred *cred, struct vnode *vp)
 {
 	int error;
diff --git a/sys/security/mac/mac_net.c b/sys/security/mac/mac_net.c
index f4cfa8a..ff5c43a 100644
--- a/sys/security/mac/mac_net.c
+++ b/sys/security/mac/mac_net.c
@@ -2492,6 +2492,19 @@ mac_check_system_reboot(struct ucred *cred, int howto)
 }
 
 int
+mac_check_system_settime(struct ucred *cred)
+{
+	int error;
+
+	if (!mac_enforce_system)
+		return (0);
+
+	MAC_CHECK(check_system_settime, cred);
+
+	return (error);
+}
+
+int
 mac_check_system_swapon(struct ucred *cred, struct vnode *vp)
 {
 	int error;
diff --git a/sys/security/mac/mac_pipe.c b/sys/security/mac/mac_pipe.c
index f4cfa8a..ff5c43a 100644
--- a/sys/security/mac/mac_pipe.c
+++ b/sys/security/mac/mac_pipe.c
@@ -2492,6 +2492,19 @@ mac_check_system_reboot(struct ucred *cred, int howto)
 }
 
 int
+mac_check_system_settime(struct ucred *cred)
+{
+	int error;
+
+	if (!mac_enforce_system)
+		return (0);
+
+	MAC_CHECK(check_system_settime, cred);
+
+	return (error);
+}
+
+int
 mac_check_system_swapon(struct ucred *cred, struct vnode *vp)
 {
 	int error;
diff --git a/sys/security/mac/mac_policy.h b/sys/security/mac/mac_policy.h
index 7be466f..2ea7afe 100644
--- a/sys/security/mac/mac_policy.h
+++ b/sys/security/mac/mac_policy.h
@@ -316,6 +316,7 @@ struct mac_policy_ops {
 	int	(*mpo_check_socket_visible)(struct ucred *cred,
 		    struct socket *so, struct label *socketlabel);
 	int	(*mpo_check_system_reboot)(struct ucred *cred, int howto);
+	int	(*mpo_check_system_settime)(struct ucred *cred);
 	int	(*mpo_check_system_swapon)(struct ucred *cred,
 		    struct vnode *vp, struct label *label);
 	int	(*mpo_check_system_sysctl)(struct ucred *cred, int *name,
diff --git a/sys/security/mac/mac_process.c b/sys/security/mac/mac_process.c
index f4cfa8a..ff5c43a 100644
--- a/sys/security/mac/mac_process.c
+++ b/sys/security/mac/mac_process.c
@@ -2492,6 +2492,19 @@ mac_check_system_reboot(struct ucred *cred, int howto)
 }
 
 int
+mac_check_system_settime(struct ucred *cred)
+{
+	int error;
+
+	if (!mac_enforce_system)
+		return (0);
+
+	MAC_CHECK(check_system_settime, cred);
+
+	return (error);
+}
+
+int
 mac_check_system_swapon(struct ucred *cred, struct vnode *vp)
 {
 	int error;
diff --git a/sys/security/mac/mac_syscalls.c b/sys/security/mac/mac_syscalls.c
index f4cfa8a..ff5c43a 100644
--- a/sys/security/mac/mac_syscalls.c
+++ b/sys/security/mac/mac_syscalls.c
@@ -2492,6 +2492,19 @@ mac_check_system_reboot(struct ucred *cred, int howto)
 }
 
 int
+mac_check_system_settime(struct ucred *cred)
+{
+	int error;
+
+	if (!mac_enforce_system)
+		return (0);
+
+	MAC_CHECK(check_system_settime, cred);
+
+	return (error);
+}
+
+int
 mac_check_system_swapon(struct ucred *cred, struct vnode *vp)
 {
 	int error;
diff --git a/sys/security/mac/mac_system.c b/sys/security/mac/mac_system.c
index f4cfa8a..ff5c43a 100644
--- a/sys/security/mac/mac_system.c
+++ b/sys/security/mac/mac_system.c
@@ -2492,6 +2492,19 @@ mac_check_system_reboot(struct ucred *cred, int howto)
 }
 
 int
+mac_check_system_settime(struct ucred *cred)
+{
+	int error;
+
+	if (!mac_enforce_system)
+		return (0);
+
+	MAC_CHECK(check_system_settime, cred);
+
+	return (error);
+}
+
+int
 mac_check_system_swapon(struct ucred *cred, struct vnode *vp)
 {
 	int error;
diff --git a/sys/security/mac/mac_vfs.c b/sys/security/mac/mac_vfs.c
index f4cfa8a..ff5c43a 100644
--- a/sys/security/mac/mac_vfs.c
+++ b/sys/security/mac/mac_vfs.c
@@ -2492,6 +2492,19 @@ mac_check_system_reboot(struct ucred *cred, int howto)
 }
 
 int
+mac_check_system_settime(struct ucred *cred)
+{
+	int error;
+
+	if (!mac_enforce_system)
+		return (0);
+
+	MAC_CHECK(check_system_settime, cred);
+
+	return (error);
+}
+
+int
 mac_check_system_swapon(struct ucred *cred, struct vnode *vp)
 {
 	int error;