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Allow sensors daemon to create vendor data files

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Add an entry to init.hardware.rc to create /data/vendor/sensors at
startup, and sepolicy entries that allow the sensors daemon to create
files in that directory. These will be used to persist runtime
calibration across reboot, but not across factory reset.

denied { getattr } for pid=14080 comm="sensors.qcom"
path="/data/vendor/sensors/cal.txt" dev="sda45" ino=2179116
scontext=u:r:sensors:s0 tcontext=u:object_r:system_data_file:s0
tclass=file permissive=1
denied { write } for pid=14113 comm="sensors.qcom" name="vendor"
dev="sda45" ino=2179073 scontext=u:r:sensors:s0
tcontext=u:object_r:system_data_file:s0 tclass=dir permissive=1
denied { add_name } for pid=14113 comm="sensors.qcom" name="sensors"
scontext=u:r:sensors:s0 tcontext=u:object_r:system_data_file:s0
tclass=dir permissive=1
denied { create } for pid=14113 comm="sensors.qcom" name="sensors"
scontext=u:r:sensors:s0 tcontext=u:object_r:system_data_file:s0
tclass=dir permissive=1
denied { create } for pid=14113 comm="sensors.qcom" name="cal.bin"
scontext=u:r:sensors:s0 tcontext=u:object_r:system_data_file:s0
tclass=file permissive=1
denied { write open } for pid=14113 comm="sensors.qcom"
path="/data/vendor/sensors/cal.bin" dev="sda45" ino=2179115
scontext=u:r:sensors:s0 tcontext=u:object_r:system_data_file:s0
tclass=file permissive=1
denied { read } for pid=14113 comm="sensors.qcom"
path="/data/vendor/sensors/cal.txt" dev="sda45" ino=2179116
scontext=u:r:sensors:s0 tcontext=u:object_r:system_data_file:s0
tclass=file permissive=1
denied { getattr } for pid=14113 comm="sensors.qcom"
path="/data/vendor/sensors/cal.txt" dev="sda45" ino=2179116
scontext=u:r:sensors:s0 tcontext=u:object_r:system_data_file:s0
tclass=file permissive=1

Bug: 38425697
Test: confirm folder is created on boot, and calibration files are
created, updated, and read successfully by sensors daemon
Change-Id: Ie23cafe4f43b3335e07cf0d13dde0c5d06b69f80
This commit is contained in:
Brian Duddie
2017-06-23 15:50:54 -07:00
parent 53c92f3bb8
commit ee8cd6b127
4 changed files with 7 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
init.hardware.rc
View File

@@ -330,6 +330,8 @@ on zygote-start
mkdir /data/misc/sensors
chmod 775 /data/misc/sensors
mkdir /data/vendor/sensors 0770
# Mark the copy complete flag to not completed
write /data/vendor/radio/copy_complete 0
chown radio radio /data/vendor/radio/copy_complete

1
sepolicy/vendor/file.te vendored
View File

@@ -66,6 +66,7 @@ type ramdump_vendor_data_file, file_type, data_file_type, mlstrustedobject;
type modem_dump_file, file_type, data_file_type;
type ese_vendor_data_file, file_type, data_file_type;
type time_vendor_data_file, file_type, data_file_type;
type sensors_vendor_data_file, file_type, data_file_type;
type vendor_firmware_file, vendor_file_type, file_type;

1
sepolicy/vendor/file_contexts vendored
View File

@@ -241,6 +241,7 @@
/data/vendor/ese(/.*)? u:object_r:ese_vendor_data_file:s0
/data/vendor/ipa(/.*)? u:object_r:ipa_vendor_data_file:s0
/data/vendor/time(/.*)? u:object_r:time_vendor_data_file:s0
/data/vendor/sensors(/.*)? u:object_r:sensors_vendor_data_file:s0
# /
/tombstones u:object_r:rootfs:s0

3
sepolicy/vendor/sensors.te vendored
View File

@@ -17,6 +17,9 @@ allow sensors persist_sensors_file:dir rw_dir_perms;
allow sensors persist_sensors_file:file create_file_perms;
allow sensors persist_file:dir { getattr search };
allow sensors sensors_vendor_data_file:dir create_dir_perms;
allow sensors sensors_vendor_data_file:file create_file_perms;
allow sensors system_file:dir r_dir_perms;
allow sensors sensors_device:chr_file rw_file_perms;