[Bug 211213] [PATCH] Add an option for wpa_supplicant to create the control interface socket

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211213

            Bug ID: 211213
           Summary: [PATCH] Add an option for wpa_supplicant to create the
                    control interface socket
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Keywords: patch
          Severity: Affects Only Me
          Priority: ---
         Component: conf
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: yuri at rawbw.com
          Keywords: patch

Created attachment 172695
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=172695&action=edit
patch

This patch added the option -C <ctrl> for wpa_supplicant to always create the
control interface.

Users on the mobile devices often need to connect to various WiFi networks.
This usually requires the access to wpa_supplicant control interface.

The control interface socket is only readable by root and wheel:
> # ls -l /var/run/wpa_supplicant/wlan0
> srwxrwx---  1 root  wheel  0 Jul 18 22:19 /var/run/wpa_supplicant/wlan0

One example of the program using the control interface is wpa_supplicant's own
UI: net/wpa_gui port.

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