On Tue, 19 Jun 2018 at 12:32:19 +0000, mag...@minimum.se wrote: > The system is on a quite old kernel (3.18.44) ... > At this point, things go wrong when > recvmsg() is called on bus->input_fd with flags MSG_DONTWAIT|MSG_NOSIGNAL| > MSG_CMSG_CLOEXEC. This syscall returns -22 (Invalid argument) which propagates > all the way up to the user.
(I hate the way kernel/syscall/libc error-reporting isn't accompanied by a human-readable message that could tell you *which* argument is invalid... compare with GLib/D-Bus errors) MSG_NOSIGNAL is meaningless for recvmsg() <https://www.spinics.net/lists/linux-man/msg10557.html> so it's possible that your older kernel doesn't allow it, but newer kernels allow and ignore it? sd-bus should probably only use that flag for sendmsg() and the rest of the send(2) family. smcv _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
