The new wifi HAL manages the wlan driver and hence needs to be able to
load/unload the driver. The "wlan.driver.status" is used to indicate the
state of the driver to the rest of the system. There are .rc scripts for
example which wait for the state of this property.
Denials:
03-01 13:31:43.394 476 476 W android.hardwar: type=1400
audit(0.0:7243): avc: denied { read } for name="u:object_r:wifi_prop:s0"
dev="tmpfs" ino=10578 scontext=u:r:hal_wifi_default:s0
tcontext=u:object_r:wifi_prop:s0 tclass=file permissive=0
03-01 13:31:43.399 476 476 E libc : Access denied finding
property "wlan.driver.status"
Bug: 35765841
Test: Denials no longer seen
Change-Id: I502494af7140864934038ef51cb0326ba3902c63
This switches Wi-Fi HAL policy to the design which enables us to
conditionally remove unnecessary rules from domains which are clients
of Wi-Fi HAL.
Domains which are clients of Wi-Fi HAL, such as system_server domain,
are granted rules targeting hal_wifi only when the Wi-Fi HAL runs in
passthrough mode (i.e., inside the client's process). When the HAL
runs in binderized mode (i.e., in another process/domain, with clients
talking to the HAL over HwBinder IPC), rules targeting hal_wifi are
not granted to client domains.
Domains which offer a binderized implementation of Wi-Fi HAL, such as
hal_wifi_default domain, are always granted rules targeting hal_wifi.
Test: Setup Wizard (incl. adding a Google Account) completes fine with
Wi-Fi connectivity only
Test: Toggle Wi-Fi off, on, off, on
Test: Use System UI to see list of WLANs and connect to one which does
not require a password, and to one which requries a PSK
Test: ip6.me loads fine in Chrome over Wi-Fi
Bug: 34170079
Change-Id: I7a216a06727c88b7f2c23d529f67307e83bed17f
Need write permissions on the specified sysfs path for reloading
firmware.
Denials:
01-21 23:39:01.650 4669 4669 W android.hardwar: type=1400
audit(0.0:103): avc: denied { write } for name="fwpath" dev="sysfs"
ino=6847 scontext=u:r:hal_wifi:s0
tcontext=u:object_r:sysfs_wlan_fwpath:s0 tclass=file permissive=0
01-21 23:39:01.653 4669 4669 E android.hardware.wifi@1.0-service:
Failed to open wlan fw path param: Permission denied
Bug: 32018162
Test: Denials no longer present in the logs.
Change-Id: I1a468e7c2a2a4360a2b61f04f1940471d52d0dd6
We're going to be using Android framework directly to invoke Wifi HIDL
calls. So, change permissions appropriately.
Bug: 33398154
Test: Verfied that framework is able to make HIDL calls using
go/aog/310610.
Change-Id: I4d0d88961753ad73f3876aec58b26b89486cc02a
