diff options
| author | Hans Dedecker <dedeckeh@gmail.com> | 2017-01-26 15:23:36 +0100 |
|---|---|---|
| committer | Hans Dedecker <dedeckeh@gmail.com> | 2017-01-26 18:22:52 +0100 |
| commit | 44965f14d7abed2d5327ca1c89e4bcf481473e53 (patch) | |
| tree | 8c4163ca76ca2b6be0a93ac3f8e55245e41a3fb2 /src/odhcpd.c | |
| parent | e447ff965919f3718c1483d44ea4e99e800c6714 (diff) | |
odhcpd: extra syslog tracing
Add extra syslog tracing for trouble shooting
and make some syslog traces more self explaining
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
Diffstat (limited to 'src/odhcpd.c')
| -rw-r--r-- | src/odhcpd.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/src/odhcpd.c b/src/odhcpd.c index e83a700..6a3ba86 100644 --- a/src/odhcpd.c +++ b/src/odhcpd.c @@ -219,8 +219,10 @@ ssize_t odhcpd_get_interface_addresses(int ifindex, struct ifaddrmsg ifa; } req = {{sizeof(req), RTM_GETADDR, NLM_F_REQUEST | NLM_F_DUMP, ++rtnl_seq, 0}, {AF_INET6, 0, 0, 0, ifindex}}; - if (send(rtnl_socket, &req, sizeof(req), 0) < (ssize_t)sizeof(req)) + if (send(rtnl_socket, &req, sizeof(req), 0) < (ssize_t)sizeof(req)) { + syslog(LOG_WARNING, "Request failed to dump IPv6 addresses (%s)", strerror(errno)); return 0; + } uint8_t buf[8192]; ssize_t len = 0, ret = 0; @@ -232,13 +234,16 @@ ssize_t odhcpd_get_interface_addresses(int ifindex, if (len < 0 || !NLMSG_OK(nhm, (size_t)len)) { if (errno == EINTR) continue; - else - return ret; + + syslog(LOG_WARNING, "Failed to receive IPv6 address rtnetlink message (%s)", strerror(errno)); + return ret; } } - if (nhm->nlmsg_type != RTM_NEWADDR) + if (nhm->nlmsg_type != RTM_NEWADDR) { + syslog(LOG_WARNING, "Unexpected rtnetlink message (%d) in response to IPv6 address dump", nhm->nlmsg_type); break; + } // Skip address but keep clearing socket buffer if (ret >= (ssize_t)cnt) |