Unable to open connection to supplicant on "/data/system/wpa_supplicant/wlan0"

[bala krishnan]

Hi,

   I am porting sd8688 wifi module to froyo on pxa3xx based board. While selecting option Wi-Fi from "Wireless & networks" in Android, the driver & firmare is loaded well after that this option got deselected with error.

   While looking on the external/wpa_supplicant package, I have doubt with following piece of code from wpa_ctrl_open(const char *ctrl_path) which belongs to wpa_ctrl.c file

 if (connect(ctrl->s, (struct sockaddr *) &ctrl->dest,

                    sizeof(ctrl->dest)) < 0) {

                close(ctrl->s);

                unlink(ctrl->local.sun_path);

                os_free(ctrl);

                LOGE("wpa_ctrl_open (5)");

                return NULL;

        }

logcat details

=============

[  189.508299] calling  lbs_init_module+0x0/0xdc [libertas] @ 861

[  189.514760] initcall lbs_init_module+0x0/0xdc [libertas] returned 0 after 8 usecs

[  190.076393] calling  if_sdio_init_module+0x0/0x10c [libertas_sdio] @ 861

[  190.083400] libertas_sdio: Libertas SDIO driver

[  190.087904] libertas_sdio: Copyright Pierre Ossman

[  190.094414] libertas_sdio mmc1:0001:1: firmware: requesting sd8688_helper.bin

[  190.170002] init: untracked pid 1072 exited

[  190.202575] libertas_sdio mmc1:0001:1: firmware: requesting sd8688.bin

[  190.548485] init: untracked pid 1075 exited

[  191.529540] libertas: 00:27:13:82:f5:d2, fw 10.38.1p25, cap 0x00000303

[  191.551094] libertas: wlan0: Marvell WLAN 802.11 adapter

[  191.560391] initcall if_sdio_init_module+0x0/0x10c [libertas_sdio] returned 0 after 1442302 usecs

D/Tethering(  828): wlan0 is not a tetherable iface, ignoring

D/skia    (  828): purging 149K from font cache [18 entries]

D/dalvikvm(  828): GC_EXPLICIT freed 1956 objects / 154824 bytes in 124ms

D/WifiService(  828): ACTION_BATTERY_CHANGED pluggedType: 0

E/Wpa_supplicant_code(  828): wpa_ctrl_open (3)ctrl_path=/data/system/wpa_supplicant/wlan0 

E/Wpa_supplicant_code(  828): wpa_ctrl_open (5)dest.sun_path=/data/system/wpa_supplicant/wlan0 sizeof(ctrl->dest.sun_path)=108 ctrl_path=/data/system/wpa_supplicant/wlan0

E/Wpa_supplicant_code(  828): wpa_ctrl_open (6)ctrl->s=16 &ctrl->dest=c05b2 sizeof(ctrl->dest)=110

E/Wpa_supplicant_code(  828): wpa_ctrl_open (5)

E/WifiHW  (  828): Unable to open connection to supplicant on "/data/system/wpa_supplicant/wlan0": No such file or directory

E/wpa_supplicant( 1082): Failed to initialize control interface 'DIR=/data/system/wpa_supplicant GROUP=system'.

E/wpa_supplicant( 1082): You may have another wpa_supplicant process already running or the file was

E/wpa_supplicant( 1082): left by an unclean termination of wpa_supplicant in which case you will need

E/wpa_supplicant( 1082): to manually remove this file before starting wpa_supplicant again.

I/wpa_supplicant( 1082): CTRL-EVENT-STATE-CHANGE id=-1 state=0

[  197.630222] pxa2xx-mci pxa2xx-mci.0: unable to stop clock

E/wpa_supplicant( 1088): Failed to initialize control interface 'DIR=/data/system/wpa_supplicant GROUP=system'.

E/wpa_supplicant( 1088): You may have another wpa_supplicant process already running or the file was

E/wpa_supplicant( 1088): left by an unclean termination of wpa_supplicant in which case you will need

E/wpa_supplicant( 1088): to manually remove this file before starting wpa_supplicant again.

I/wpa_supplicant( 1088): CTRL-EVENT-STATE-CHANGE id=-1 state=0

E/WifiHW  (  828): Supplicant not running, cannot connect

D/skia    (  895): purging 72K from font cache [10 entries]

D/dalvikvm(  895): GC_EXPLICIT freed 9869 objects / 476880 bytes in 180ms

E/wpa_supplicant( 1091): Failed to initialize control interface 'DIR=/data/system/wpa_supplicant GROUP=system'.

E/wpa_supplicant( 1091): You may have another wpa_supplicant process already running or the file was

E/wpa_supplicant( 1091): left by an unclean termination of wpa_supplicant in which case you will need

E/wpa_supplicant( 1091): to manually remove this file before starting wpa_supplicant again.

I/wpa_supplicant( 1091): CTRL-EVENT-STATE-CHANGE id=-1 state=0

E/WifiHW  (  828): Supplicant not running, cannot connect

E/wpa_supplicant( 1094): Failed to initialize control interface 'DIR=/data/system/wpa_supplicant GROUP=system'.

E/wpa_supplicant( 1094): You may have another wpa_supplicant process already running or the file was

E/wpa_supplicant( 1094): left by an unclean termination of wpa_supplicant in which case you will need

E/wpa_supplicant( 1094): to manually remove this file before starting wpa_supplicant again.

I/wpa_supplicant( 1094): CTRL-EVENT-STATE-CHANGE id=-1 state=0

E/WifiHW  (  828): Supplicant not running, cannot connect

V/WifiStateTracker(  828): Supplicant died unexpectedly

D/WifiStateTracker(  828): Reset connections and stopping DHCP

D/WifiStateTracker(  828): Disabling interface

D/NetworkStateTracker(  828): setDetailed state, old =IDLE and new state=DISCONNECTED

D/ConnectivityService(  828): ConnectivityChange for WIFI: DISCONNECTED/DISCONNECTED

D/ConnectivityService(  828): getMobileDataEnabled returning true

D/WifiStateTracker(  828): Reset connections and stopping DHCP

D/DataConnectionTracker(  891): enableApnType(default), isApnTypeActive = false and state = IDLE

D/DataConnectionTracker(  891): type not available

D/Tethering(  828): Tethering got CONNECTIVITY_ACTION

I/ActivityManager(  828): Start proc android.process.media for broadcast com.android.providers.downloads/.DownloadReceiver: pid=1097 uid=10009 gids={1015, 2001, 3003}

D/Tethering(  828): MasterInitialState.processMessage what=3

E/HierarchicalStateMachine(  828): TetherMaster - unhandledMessage: msg.what=3

D/WifiStateTracker(  828): Disabling interface

init.rc 

=======

    mkdir /data/misc/wifi 0770 wifi system

    chown wifi system /data/misc/wifi

    touch /data/misc/wifi/wpa_supplicant.conf

    chmod 0660 /data/misc/wifi/wpa_supplicant.conf

    chown wifi system /data/misc/wifi/wpa_supplicant.conf

    mkdir /data/misc/wifi/sockets 0771 wifi system

    chown wifi system /data/misc/wifi/sockets

    chmod 0771 /data/misc/wifi/sockets

    mkdir /data/misc/android 0770 wifi system

    mkdir /data/system/wpa_supplicant 0770 wifi system

    mkdir /data/misc/dhcp 0770 dhcp dhcp

    chown dhcp dhcp /data/misc/dhcp

    chmod 0770 /data/misc/dhcp

    setprop wifi.interface wlan0

service wpa_supplicant /system/bin/wpa_supplicant -Dwext -iwlan0 -c/data/misc/wifi/wpa_supplicant.conf

    user wifi system

    group system

    disabled

service dhcpcd /system/bin/dhcpcd -B wlan0

    disabled

    oneshot

With Regards

J.Balakrishnan

[bala krishnan]

hi, 

   This is error is resolved by using Android private socket instead of Unix standard socket Unix standard socket in wpa_supplicant . I got more info from this link

http://blog.linuxconsulting.ro/2010/04/porting-wifi-drivers-to-android.html

Thanks

J.Balakrishnan

[Lay]

Hi,

I am also facing the same problem. How can one know whether to use
Android private socket or Unix standard socket?

Thank you.

On Feb 18, 11:55 pm, bala krishnan <jjb...@gmail.com> wrote:
> hi,

>    This is error is resolved by using *Android private socket *instead of *Unix
> standard socket **Unix standard socket *in wpa_supplicant . I got more info
> from this link
>
> http://blog.linuxconsulting.ro/2010/04/porting-wifi-drivers-to-androi...
>
> Thanks
> J.Balakrishnan
> * *

> > *E/WifiHW  (  828): Unable to open connection to supplicant on
> > "/data/system/wpa_supplicant/wlan0": No such file or directory*

[Mr. Martin]

I am facing the same problem...

E/WifiHW  (  828): Unable to open connection to supplicant on "/data/system/wpa_supplicant/wlan0": No such file or directory

can somebody help ?


Martin

[Twaik Yont]

Try to remove /data/system/wpa_supplicant/ folder. Or create it. It helped my device to connect Wifi