From: Tom Gundersen <teg@jklm.no>
Date: Sun, 28 Dec 2014 23:19:36 +0000 (+0100)
Subject: sd-rtnl: recv_message - log when dropping message
X-Git-Tag: v219~778
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=2263bb9a92f25571f837700cfee4fb79721baf46

sd-rtnl: recv_message - log when dropping message

We drop messages received from the wrong uid/pid, log this at debug level.
---

diff --git a/src/libsystemd/sd-rtnl/rtnl-message.c b/src/libsystemd/sd-rtnl/rtnl-message.c
index 9099440ad..cfb2af314 100644
--- a/src/libsystemd/sd-rtnl/rtnl-message.c
+++ b/src/libsystemd/sd-rtnl/rtnl-message.c
@@ -1363,6 +1363,8 @@ static int socket_recv_message(int fd, struct iovec *iov, uint32_t *_group, bool
                         /* from the kernel */
                         if (ucred->uid == 0 && ucred->pid == 0)
                                 auth = true;
+                        else
+                                log_debug("rtnl: ignoring message from uid %u pid %u", ucred->uid, ucred->pid);
                 } else if (cmsg->cmsg_level == SOL_NETLINK &&
                            cmsg->cmsg_type == NETLINK_PKTINFO &&
                            cmsg->cmsg_len == CMSG_LEN(sizeof(struct nl_pktinfo))) {