kernel: Use a time_t to report use time in query_policy()

src/charon-tkm/src/tkm/tkm_kernel_ipsec.c

@@ -271,7 +271,7 @@ METHOD(kernel_ipsec_t, add_policy, status_t,
 METHOD(kernel_ipsec_t, query_policy, status_t,
 	private_tkm_kernel_ipsec_t *this, traffic_selector_t *src_ts,
 	traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
-	u_int32_t *use_time)
+	time_t *use_time)
 {
 	return NOT_SUPPORTED;
 }

src/frontends/android/jni/libandroidbridge/kernel/android_ipsec.c

@@ -118,7 +118,7 @@ METHOD(kernel_ipsec_t, add_policy, status_t,
 METHOD(kernel_ipsec_t, query_policy, status_t,
 	private_kernel_android_ipsec_t *this, traffic_selector_t *src_ts,
 	traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
-	u_int32_t *use_time)
+	time_t *use_time)
 {
 	return NOT_SUPPORTED;
 }

src/libcharon/plugins/kernel_libipsec/kernel_libipsec_ipsec.c

@@ -555,7 +555,7 @@ METHOD(kernel_ipsec_t, add_policy, status_t,
 METHOD(kernel_ipsec_t, query_policy, status_t,
 	private_kernel_libipsec_ipsec_t *this, traffic_selector_t *src_ts,
 	traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
-	u_int32_t *use_time)
+	time_t *use_time)
 {
 	return NOT_SUPPORTED;
 }

src/libcharon/plugins/load_tester/load_tester_ipsec.c

@@ -95,7 +95,7 @@ METHOD(kernel_ipsec_t, add_policy, status_t,
 METHOD(kernel_ipsec_t, query_policy, status_t,
 	private_load_tester_ipsec_t *this, traffic_selector_t *src_ts,
 	traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
-	u_int32_t *use_time)
+	time_t *use_time)
 {
 	*use_time = 1;
 	return SUCCESS;

src/libcharon/sa/child_sa.c

@@ -489,12 +489,12 @@ static bool update_usetime(private_child_sa_t *this, bool inbound)
 {
 	enumerator_t *enumerator;
 	traffic_selector_t *my_ts, *other_ts;
-	u_int32_t last_use = 0;
+	time_t last_use = 0;
 
 	enumerator = create_policy_enumerator(this);
 	while (enumerator->enumerate(enumerator, &my_ts, &other_ts))
 	{
-		u_int32_t in, out, fwd;
+		time_t in, out, fwd;
 
 		if (inbound)
 		{

src/libhydra/kernel/kernel_interface.c

@@ -256,7 +256,7 @@ METHOD(kernel_interface_t, add_policy, status_t,
 METHOD(kernel_interface_t, query_policy, status_t,
 	private_kernel_interface_t *this, traffic_selector_t *src_ts,
 	traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
-	u_int32_t *use_time)
+	time_t *use_time)
 {
 	if (!this->ipsec)
 	{

src/libhydra/kernel/kernel_interface.h

@@ -264,14 +264,14 @@ struct kernel_interface_t {
 	 * @param dst_ts		traffic selector to match traffic dest
 	 * @param direction		direction of traffic, POLICY_(IN|OUT|FWD)
 	 * @param mark			optional mark
-	 * @param[out] use_time	the time of this SA's last use
+	 * @param[out] use_time	the (monotonic) time of this SA's last use
 	 * @return				SUCCESS if operation completed
 	 */
 	status_t (*query_policy) (kernel_interface_t *this,
 							  traffic_selector_t *src_ts,
 							  traffic_selector_t *dst_ts,
 							  policy_dir_t direction, mark_t mark,
-							  u_int32_t *use_time);
+							  time_t *use_time);
 
 	/**
 	 * Remove a policy from the SPD.

src/libhydra/kernel/kernel_ipsec.h

@@ -228,7 +228,7 @@ struct kernel_ipsec_t {
 							  traffic_selector_t *src_ts,
 							  traffic_selector_t *dst_ts,
 							  policy_dir_t direction, mark_t mark,
-							  u_int32_t *use_time);
+							  time_t *use_time);
 
 	/**
 	 * Remove a policy from the SPD.

src/libhydra/plugins/kernel_klips/kernel_klips_ipsec.c

@@ -2207,7 +2207,7 @@ METHOD(kernel_ipsec_t, add_policy, status_t,
 METHOD(kernel_ipsec_t, query_policy, status_t,
 	private_kernel_klips_ipsec_t *this, traffic_selector_t *src_ts,
 	traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
-	u_int32_t *use_time)
+	time_t *use_time)
 {
 	#define IDLE_PREFIX "idle="
 	static const char *path_eroute = "/proc/net/ipsec_eroute";

src/libhydra/plugins/kernel_netlink/kernel_netlink_ipsec.c

@@ -2302,7 +2302,7 @@ METHOD(kernel_ipsec_t, add_policy, status_t,
 METHOD(kernel_ipsec_t, query_policy, status_t,
 	private_kernel_netlink_ipsec_t *this, traffic_selector_t *src_ts,
 	traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
-	u_int32_t *use_time)
+	time_t *use_time)
 {
 	netlink_buf_t request;
 	struct nlmsghdr *out = NULL, *hdr;

src/libhydra/plugins/kernel_pfkey/kernel_pfkey_ipsec.c

@@ -2382,7 +2382,7 @@ METHOD(kernel_ipsec_t, add_policy, status_t,
 METHOD(kernel_ipsec_t, query_policy, status_t,
 	private_kernel_pfkey_ipsec_t *this, traffic_selector_t *src_ts,
 	traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark,
-	u_int32_t *use_time)
+	time_t *use_time)
 {
 	unsigned char request[PFKEY_BUFFER_SIZE];
 	struct sadb_msg *msg, *out;