Hi, all.
I have one question about the chown() service call.
In the ensure_config_file_exists() function of wifi.c,
this function is called from the "system_server" processor.
The "system_server" process has 1000(system) uid and 1000(system) gid.
As far as I know, to change the ownership of the file, the processor
should have a root permission.
But the "system_server" has no root permission.
So, in my case, the below logs are displayed always.
How can I resolve it?
BR,
nus
[ 135.220000] init: event { 'add', '/module/bcm4325', 'module', '',
-1, -1 }
[ 135.240000] Linux Kernel SDIO/MMC Driver
[ 135.240000] bus: 'sdio': add driver bcmsdh_sdmmc
[ 135.240000] sdio_bus_match: return 1
[ 135.250000] sdio_bus_probe: sdio_match_device() return 0xbf01ab2c
[ 135.260000] sdio_bus_match: return 1
[ 135.260000] sdio_bus_probe: sdio_match_device() return 0xbf01ab2c
D/SettingsWifiEnabler( 742): Received wifi state changed from
Disabled to Enabling
[ 135.310000] DHD: dongle ram size is set to 393216(orig 393216)
[ 135.930000] init: event { 'add', '/devices/virtual/net/eth1',
'net', '', -1, -1 }
[ 135.930000] eth1: Broadcom Dongle Host Driver mac=00:22:58:20:80:02
[ 136.020000] init: event { 'add', '/bus/sdio/drivers/bcmsdh_sdmmc',
'drivers', '', -1, -1 }
[ 136.020000]
[ 136.020000] Dongle Host Driver, version 4.218.223.0
D/WifiHW ( 555): ===========(+) wifi_start_supplicant()
D/WifiHW ( 555): ensure_config_file_exists : system_server,
gid=1000, uid=1000
E/WifiHW ( 555): Error changing group ownership of /data/misc/wifi/
bcm_supp.conf to 1010: Operation not permitted
E/WifiHW ( 555): Wi-Fi will not be enabled
D/WifiHW ( 555): ===========wifi_unload_driver()
[ 137.310000] init: event { 'remove', '/bus/sdio/drivers/
bcmsdh_sdmmc', 'drivers', '', -1, -1 }
[ 137.310000] init: event { 'remove', '/module/bcm4325', 'module',
'', -1, -1 }
E/WifiService( 555): Failed to start supplicant daemon.
D/SettingsWifiEnabler( 742): Received wifi state changed from
Enabling to Unknown
==== ensure_config_file_exists() in the wifi.c ====
if (chown(SUPP_CONFIG_FILE, AID_SYSTEM, AID_WIFI) < 0) {
LOGE("Error changing group ownership of %s to %d: %s",
SUPP_CONFIG_FILE, AID_WIFI, strerror(errno));
unlink(SUPP_CONFIG_FILE);
return -1;
}
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