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logd, the init.recovery.logd.rc, and other related files were
included by default if your device configs specified
TARGET_USES_LOGD := true which would be the case for any device
that has a full ROM tree instead of a minimal TWRP tree.
Change-Id: Ia1e55703631f0f22beab2f4d4479599b88539e1a
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Developers and device maintainers may find it useful to have access
to logcat in recovery. This patch set adds the following build flags:
TARGET_USES_LOGD - This is an Android build flag that enables logd
support. Devices that don't have built in kernel logging to dev/log/*
will need this flag for logcat. We'll also use this to include the
necessary support files for logd in TWRP.
TWRP_INCLUDE_LOGCAT - This enables logcat support in recovery.
I pulled the init entries from my HTC One M8 GPE boot.img,
so I'm not certain whether these will work for all devices
or if they're all necessary.
Feedback is welcome.
PS2: Use "TARGET_USES_LOGD" instead as this flag already exists, and
previous flag was named incorrectly (logd isn't kernel logging)
PS3: Start logd service on load_persist_props action, needed for 6.0+
PS4: More info on "TARGET_USES_LOGD" flag as related to liblog
compilation can be found at the below links:
https://android.googlesource.com/platform/system/core/+/android-6.0.1_r10/liblog/Android.mk#27
https://android.googlesource.com/platform/system/core/+/android-6.0.1_r10/liblog/Android.mk#50
Whether or not this flag is needed for logcat in TWRP is dependent
on whether liblog was compiled with this flag.
PS5: Update commit message to better describe "TARGET_USES_LOGD" flag
PS6: Another commit message update
Change-Id: Iaac6c6c822dc93fbe4b6eadcf24eef6995dd6b50
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This enables devices to provide their own USB configuration. The
contents of init.recovery.usb.rc can most simply be modified and
included in a device's init.recovery.${ro.hardware}.rc.
Use option:
TW_EXCLUDE_DEFAULT_USB_INIT := true
Rationale: Some devices handle USB pid switching in the kernel. In this
case, USB init provides switching functions which differ from the
standard on property:sys.usb.config=xyz. Other devices should not see
USB attempt mtp,adb mode when TW_EXCLUDE_MTP is set.
Cherry-picked from android-5.0
Change-Id: Ief0fcaf46a1782102166fc1b733a34b1a1ba0802
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