Re: [Patch] PR 31228, Fix close-on-exec race.

[Tom Tromey <tromey at redhat dot com>]

>>>>> "David" == David Daney <ddaney@avtrex.com> writes:

David> Make the accept non-blocking, and do a select/poll on the
David> ServerSocket. That way the accept would never block and you could use
David> a mutex.

Yeah.  I hadn't thought of the accept case, thanks.

David> This makes me think that ld.so is probably broken also.  When we do
David> dlopen ld.so opens the library file and does several mmaps before
David> closing the file descriptor.  These could leak out as well.

Not to mention other places that libc may create fds.

On some platforms fdwalk(3) can be used to make this close loop more
efficient.  There's also closefrom(3).  Linux doesn't seem to have
either of these, but Solaris does.

Tom