global: switch from timeval to timespec

This gets us nanoseconds instead of microseconds, which is better, and
we can do this pretty much without freaking out existing userspace,
which doesn't actually make use of the nano/micro seconds field:

zx2c4@thinkpad ~ $ cat a.c
void main()
{
        puts(sizeof(struct timeval) == sizeof(struct timespec) ? "success" : "failure");
}
zx2c4@thinkpad ~ $ gcc a.c -m64 && ./a.out
success
zx2c4@thinkpad ~ $ gcc a.c -m32 && ./a.out
success

This doesn't solve y2038 problem, but timespec64 isn't yet a thing in
userspace.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/containers.h b/src/containers.h
index 58d0657..31eabea 100644
--- a/src/containers.h
+++ b/src/containers.h
@@ -6,9 +6,9 @@
 
 #include <stdint.h>
 #include <stdlib.h>
+#include <time.h>
 #include <net/if.h>
 #include <netinet/in.h>
-#include <sys/time.h>
 #include <sys/socket.h>
 
 #include "../uapi/wireguard.h"
@@ -43,7 +43,7 @@ struct wgpeer {
 		struct sockaddr_in6 addr6;
 	} endpoint;
 
-	struct timeval last_handshake_time;
+	struct timespec last_handshake_time;
 	uint64_t rx_bytes, tx_bytes;
 	uint16_t persistent_keepalive_interval;