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global: switch from timeval to timespec

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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>
This commit is contained in:
Jason A. Donenfeld 2017-11-22 16:49:56 +01:00
parent 08ce3b2426
commit bc1f6be5db
3 changed files with 7 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
src/containers.h
View file

@ -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;

2
src/ipc.c
View file

@ -427,7 +427,7 @@ static int userspace_get_device(struct wgdevice **out, const char *interface)
} else if (peer && !strcmp(key, "last_handshake_time_sec"))
peer->last_handshake_time.tv_sec = NUM(0xffffffffffffffffULL);
else if (peer && !strcmp(key, "last_handshake_time_nsec"))
peer->last_handshake_time.tv_usec = NUM(0xffffffffffffffffULL) / 1000;
peer->last_handshake_time.tv_nsec = NUM(0xffffffffffffffffULL);
else if (peer && !strcmp(key, "rx_bytes"))
peer->rx_bytes = NUM(0xffffffffffffffffULL);
else if (peer && !strcmp(key, "tx_bytes"))

8
src/show.c
View file

@ -24,13 +24,13 @@ static int peer_cmp(const void *first, const void *second)
time_t diff;
const struct wgpeer *a = *(const void **)first, *b = *(const void **)second;
if (!a->last_handshake_time.tv_sec && !a->last_handshake_time.tv_usec && (b->last_handshake_time.tv_sec || b->last_handshake_time.tv_usec))
if (!a->last_handshake_time.tv_sec && !a->last_handshake_time.tv_nsec && (b->last_handshake_time.tv_sec || b->last_handshake_time.tv_nsec))
return 1;
if (!b->last_handshake_time.tv_sec && !b->last_handshake_time.tv_usec && (a->last_handshake_time.tv_sec || a->last_handshake_time.tv_usec))
if (!b->last_handshake_time.tv_sec && !b->last_handshake_time.tv_nsec && (a->last_handshake_time.tv_sec || a->last_handshake_time.tv_nsec))
return -1;
diff = a->last_handshake_time.tv_sec - b->last_handshake_time.tv_sec;
if (!diff)
diff = a->last_handshake_time.tv_usec - b->last_handshake_time.tv_usec;
diff = a->last_handshake_time.tv_nsec - b->last_handshake_time.tv_nsec;
if (diff < 0)
return 1;
if (diff > 0)
@ -149,7 +149,7 @@ static size_t pretty_time(char *buf, const size_t len, unsigned long long left)
return offset;
}
static char *ago(const struct timeval *t)
static char *ago(const struct timespec *t)
{
static char buf[1024];
size_t offset;