> According to _Unix Network Programming_, only the umask controls the > permissions of a Unix domain socket created by bind(). This makes it > difficult to correctly control permissions on sockets in a > multithreaded process, since the umask is not thread-specific. > Therefore, currently bind_unix_socket() in socket-util.c has a race. > > On Linux, one can also affect the permissions of a Unix domain socket > by fchmoding the socket *before* calling bind(). Based on a glance at > the FreeBSD source, I don't think that this works on BSD. Is there > another way to do it there? (Does it work to fchmod the socket > post-bind?) If not, we might have to add a fallback that forks off a > process, sets the umask, and binds the socket. > > I guess FreeBSD and NetBSD could potentially differ here, too.
NetBSD doesn't have an alternative way. i think the situation is same for FreeBSD but i haven't checked. anyway, it would be nice to have a portable fallback. using a temporary directory might be less invasive than folk. YAMAMOTO Takashi > > Thanks, > > Ben. _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
