topic unable to execute ioctl in android oreo in i.MX Processors

unable to execute ioctl in android oreo

susangracerapak — Tue, 24 Apr 2018 04:48:03 GMT

Hi,

I am trying to execute a command using system call in Android oreo,in wifi_hal_common.cpp file, inside "int wifi_load_driver() {" function

system("./onebox_util rpine0 enable_protocol 1");

execl("/system/bin/onebox_util","onebox_util","rpine0","enable_protocol", "1",NULL);

both are not working.Please see the following logcat.

My module .ko's got inserted while booting, but I am unable to enable my custom wifi protocol.

Please anyone help me.

The logcat is:

01-01 00:02:05.490 1199 1199 I sh      : type=1400 audit(0.0:37): avc: denied { execute_no_trans } for path="/system/bin/onebox_util" dev="mmcblk2p3" ino=304 scontext=u:r:hal_wifi_default:s0 tcontext=u1
01-01 00:02:06.510   778   778 E android.hardware.wifi@1.0-service: Redpine in wifi_load_driver enabling protocol execl: Success
init: Service 'wifi_hal_legacy' (pid 778) exited with status 2
init: Sending signal 9 to service 'wifi_hal_legacy' (pid 778) process group...
01-01 00:02:06.541   402   461 E binder: release 778:778 transaction 30887 in, still active
HalDeviceManager: IWifi HAL servibinder: send failed reply for transaction 30887 to 402:474
ce died! Have a listener for it .init: kill(-778, 9) failed: No such process
.. cookie=0
01-01 00:02:06.541 init: Successfully killed process cgroup uid 1010 pid 778 in 6ms
402   474 E HalDeviceManager: executeChipReconfiguration exceptiinit: starting service 'wifi_hal_legacy'...
on: android.os.RemoteException: HwBinder Error: (-32)
01-01 00:0init: property_set("ro.boottime.wifi_hal_legacy", "121656472346") failed: property already set
2:06.542   402   474 E HalDeviceManager: stopWifi exception: android.os.RemoteException: HwBinder Error: (-32)
01-01 00:02:06.542   402   474 E WifiNative-wlan0: Failed to start HAL for client mode
01-01 00:02:06.543   402   402 E WifiController: WifiControllerWifi turn on failed
01-01 00:02:06.545   402   474 W HalDeviceManager: stopWifi called but mWifi is null!?
01-01 00:02:06.545   402   474 I WifiVendorHal: Vendor Hal stopped
01-01 00:02:06.545   402   474 D WificondControl: tearing down interfaces in wificond
01-01 00:02:06.560   402   474 W HalDeviceManager: startWifi called but mWifi is null!?
01-01 00:02:06.560   402   474 W HalDeviceManager: stopWifi called but mWifi is null!?
01-01 00:02:06.560   402   474 E WifiNative-wlan0: Failed to start HAL for client mode
01-01 00:02:06.561   402   402 E WifiController: WifiControllerWifi turn on failed
01-01 00:02:06.570   402   474 W HalDeviceManager: stopWifi called but mWifi is null!?
01-01 00:02:06.570   402   474 I WifiVendorHal: Vendor Hal stopped

Regards

Susan

Re: unable to execute ioctl in android oreo

diegoadrian — Wed, 25 Apr 2018 17:48:59 GMT

Hello,

Unfortunately, we only support our BSP as is. However, the below webpage can help in your question.

How do you create a loadable kernel module for Android? - Stack Overflow

Best Regards,

Diego.

Re: unable to execute ioctl in android oreo

susangracerapak — Fri, 27 Apr 2018 07:16:17 GMT

Hi Diego,

Thanks for the information.

But my issue is different, I have disabled the BCM Wifi modules which comes with the android BSP and loaded my Custom driver modules successfully,then I am using custom compiled binary[ onebox_util ]for enabling Wifi protocol but, I am unable to execute that binary from .cpp file.

The same "onebox_util" is working when I am trying to execute from android terminal.But I want to excute this utility when I turn "ON" Wi-Fi from GUI.

My Code in "wifi_hal_common.cpp" file is :

FILE *fp;

const char *wifi_get_fw_path(int fw_type) {
        switch (fw_type) {
                case WIFI_GET_FW_PATH_STA:
                        PLOG(ERROR) << "****************In WIFI_GET_FW_PATH_STA*********";
                        fp=fopen("/system/lib/onebox_util rpine0 enable_protocol 1","r");
                        if(fp==NULL)
                        {
                        PLOG(ERROR) << "could not open onebox_util...fp is NULL";
                        }
                       fclose(fp);
                        PLOG(ERROR) << "Trying to execute the same with system call";
                        system("onebox_util rpine0 enable_protocol 1");
                        return NULL;

                case WIFI_GET_FW_PATH_AP:
                       return WIFI_DRIVER_FW_PATH_AP;
                            case WIFI_GET_FW_PATH_P2P:
                        return WIFI_GET_FW_PATH_P2P;
}
return NULL;
}

When I am trying to "ON" Wi-Fi from GUI, I am getting the following prints:

android.hardware.wifi@1.0-service: Rtype=1400 audit(280.710:41): avc: denied { execute_no_trans } for pid=1552 comm="sh" path="/system/bin/onebox_util" dev="mmcblk2p3"
01-01 00:05:01.531   280   280 I android.hardware.wifi@1.0-service: Wifi HAL started
01-01 00:05:01.540   280   280 E android.hardware.wifi@1.0-service: ****************In WIFI_GET_FW_PATH_STA*********: No such device
01-01 00:05:01.540   280   280 E android.hardware.wifi@1.0-service: could not open onebox_util...fp is NULL: No such file or directory
01-01 00:05:01.540   280   280 E android.hardware.wifi@1.0-service: Trying to execute the same with system call: No such file or directory

and in BoardConfig.mk I have given the following:

BOARD_KERNEL_CMDLINE := console=ttymxc0,115200 init=/init video=mxcfb0:dev=hdmi,fbpix=RGB32,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off vmalloc=128M androidboot.console=ttymxc0 consoleblank=0 androidboot.hardware=freescale cma=448M galcore.contiguousSize=33554432 enforcing=0 androidboot.selinux=permissive androidboot.dm_verity=disable

Do you any idea about this?

Regards

Susan

Re: unable to execute ioctl in android oreo

susangracerapak — Fri, 11 May 2018 07:21:55 GMT

Please anyone help me to fix this

Regards

Susan