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avc_open() creates the netlink socket in nonblocking mode. If the application later takes control of the netlink socket with avc_netlink_acquire_fd() and then calls avc_netlink_loop(), it will fail with EWOULDBLOCK. To remedy this, remove the O_NONBLOCK flag from the netlink socket at the start of avc_netlink_loop(). Also, with this fix, there is no need for avc_open() to ever create a blocking socket, so change that and update the man page. -v2: use poll() in avc_netlink_check_nb(). This makes both avc_netlink_loop() and avc_netlink_check_nb() independent of the O_NONBLOCK flag. -v3: move poll() to avc_receive() internal function; patch by KaiGai Kohei <kaigai@kaigai.gr.jp> Signed-off-by: Eamon Walsh <ewalsh@tycho.nsa.gov> |
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