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Commit 0fb39f6e authored by Tiffany Yang's avatar Tiffany Yang
Browse files

init: Support for initializing virtio-console devices 

This change allows init to ensure that a specified virtio-console
device file (`/dev/hvc*`) is available before `ueventd` coldboot.
Times out if device path is not encountered within 10 seconds.

Bug: 325538592
Test: build bertha_x86_64 and bertha_arm64
Change-Id: Ia1512e69ea607bf4d235595caa53668e2dac500c
parent 60d8d17f

init/block_dev_initializer.cpp

+4 −0
Original line number Diff line number Diff line
@@ -139,6 +139,10 @@ bool BlockDevInitializer::InitPlatformDevice(const std::string& dev_name) { 
    return InitDevice("/sys/devices/platform", dev_name);

}



bool BlockDevInitializer::InitHvcDevice(const std::string& dev_name) {

    return InitDevice("/sys/devices/virtual/tty", dev_name);

}



bool BlockDevInitializer::InitDevice(const std::string& syspath, const std::string& device_name) {

    bool found = false;

init/block_dev_initializer.h

+1 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ class BlockDevInitializer final { 
    bool InitDevices(std::set<std::string> devices);

    bool InitDmDevice(const std::string& device);

    bool InitPlatformDevice(const std::string& device);

    bool InitHvcDevice(const std::string& device);



  private:

    ListenerAction HandleUevent(const Uevent& uevent, std::set<std::string>* devices);