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From 5c17d3eb5dba72fca49f9285a76d77debcedbbe8 Mon Sep 17 00:00:00 2001
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From: Brent Cook <bcook@openbsd.org>
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Date: Sun, 6 Dec 2015 22:35:38 -0600
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Subject: [PATCH 11/12] Deal with missing SO_TIMESTAMP
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from Paul B. Henson" <henson@acm.org>
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Fall back to the previous client.c implementation when it is not found.
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---
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src/usr.sbin/ntpd/client.c | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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diff --git a/src/usr.sbin/ntpd/client.c b/src/usr.sbin/ntpd/client.c
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index 7ce3b38..edca87c 100644
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--- a/src/usr.sbin/ntpd/client.c
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+++ b/src/usr.sbin/ntpd/client.c
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@@ -163,10 +163,12 @@ client_query(struct ntp_peer *p)
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if (p->addr->ss.ss_family == AF_INET && setsockopt(p->query->fd,
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IPPROTO_IP, IP_TOS, &val, sizeof(val)) == -1)
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log_warn("setsockopt IPTOS_LOWDELAY");
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+#ifdef SO_TIMESTAMP
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val = 1;
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if (setsockopt(p->query->fd, SOL_SOCKET, SO_TIMESTAMP,
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&val, sizeof(val)) == -1)
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fatal("setsockopt SO_TIMESTAMP");
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+#endif
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}
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/*
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@@ -213,7 +215,9 @@ client_dispatch(struct ntp_peer *p, u_int8_t settime)
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struct cmsghdr hdr;
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char buf[CMSG_SPACE(sizeof(tv))];
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} cmsgbuf;
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+#ifdef SO_TIMESTAMP
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struct cmsghdr *cmsg;
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+#endif
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ssize_t size;
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double T1, T2, T3, T4;
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time_t interval;
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@@ -226,7 +230,6 @@ client_dispatch(struct ntp_peer *p, u_int8_t settime)
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somsg.msg_control = cmsgbuf.buf;
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somsg.msg_controllen = sizeof(cmsgbuf.buf);
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- T4 = getoffset();
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if ((size = recvmsg(p->query->fd, &somsg, 0)) == -1) {
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if (errno == EHOSTUNREACH || errno == EHOSTDOWN ||
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errno == ENETUNREACH || errno == ENETDOWN ||
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@@ -251,6 +254,8 @@ client_dispatch(struct ntp_peer *p, u_int8_t settime)
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return (0);
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}
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+#ifdef SO_TIMESTAMP
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+ T4 = getoffset();
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for (cmsg = CMSG_FIRSTHDR(&somsg); cmsg != NULL;
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cmsg = CMSG_NXTHDR(&somsg, cmsg)) {
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if (cmsg->cmsg_level == SOL_SOCKET &&
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@@ -260,6 +265,9 @@ client_dispatch(struct ntp_peer *p, u_int8_t settime)
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break;
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}
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}
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+#else
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+ T4 = gettime_corrected();
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+#endif
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if (T4 < JAN_1970) {
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client_log_error(p, "recvmsg control format", EBADF);
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--
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2.7.0
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