pie: add %z support to pie's printf

This is handy whenever we want to print size_t or ssize_t.
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Acked-by: Tycho Andersen <tycho.andersen@canonical.com>
Acked-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/pie/log-simple.c

@@ -225,6 +225,9 @@ void sbuf_printf(struct simple_buf *b, const char *format, va_list args)
 			s++;
 			if (*s == 'l')
 				s++;
+		} else if (*s == 'z') {
+			along = (sizeof(size_t) > sizeof(int));
+			s++;
 		}
 
 		switch (*s) {

criu/pie/parasite.c

@@ -581,7 +581,7 @@ static int __parasite_daemon_reply_ack(unsigned int cmd, int err)
 	m = ctl_msg_ack(cmd, err);
 	ret = sys_sendto(tsock, &m, sizeof(m), 0, NULL, 0);
 	if (ret != sizeof(m)) {
-		pr_err("Sent only %d bytes while %lu expected\n", ret, sizeof(m));
+		pr_err("Sent only %d bytes while %zu expected\n", ret, sizeof(m));
 		return -1;
 	}