shared: introduce cmsg_close_all() call

The call iterates through cmsg list and closes all fds passed via
SCM_RIGHTS.

This patch also ensures the call is used wherever appropriate, where we
might get spurious fds sent and we should better close them, then leave
them lying around.

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/shared/util.h b/src/shared/util.h
index 9458a1942f..e9d9df1386 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -485,3 +485,5 @@ union inotify_event_buffer {
         struct inotify_event ev;
         uint8_t raw[INOTIFY_EVENT_MAX];
 };
+
+void cmsg_close_all(struct msghdr *mh);