Android修改Vold支持PCI-E设备自动挂载，阿里出品

+++ b/system/vold/Disk.cpp

@@ -68,6 +68,7 @@ static const unsigned int kMajorBlockScsiP = 135;

static const unsigned int kMajorBlockMmc = 179;

static const unsigned int kMajorBlockExperimentalMin = 240;

static const unsigned int kMajorBlockExperimentalMax = 254;

+static const unsigned int kMajorBlockPcie = 259;

static const char* kGptBasicData = “EBD0A0A2-B9E5-4433-87C0-68B6B72699C7”;

static const char* kGptAndroidMeta = “19A710A2-B3CA-11E4-B026-10604B889DCF”;

@@ -261,6 +262,18 @@ status_t Disk::readMetadata() {

}

break;

}

• case kMajorBlockPcie: {

•    std::string path(mSysPath + "/device/device/vendor");
  

•    std::string tmp;
  

•    if (!ReadFileToString(path, &tmp)) {
  

•        PLOG(WARNING) << "Failed to read vendor from " << path;
  

•        return -errno;
  

•    }
  

•    mLabel = tmp;
  

•    break;
  

• }

default: {

if (isVirtioBlkDevice(majorId)) {

LOG(DEBUG) << "Recognized experimental block major ID " << majorId

@@ -556,6 +569,14 @@ int Disk::getMaxMinors() {

}

return atoi(tmp.c_str());

}

• case kMajorBlockPcie: {

•    std::string tmp;
  

•    if (!ReadFileToString(kSysfsMmcMaxMinors, &tmp)) {
  

•        LOG(ERROR) << "Failed to read max minors";
  

•        return -errno;
  

•    }
  

•    return atoi(tmp.c_str());
  

• }

default: {

if (isVirtioBlkDevice(majorId)) {

// drivers/block/virtio_blk.c has “#define PART_BITS 4”, so max is

diff --git a/system/vold/Disk.h b/system/vold/Disk.h

index 77ec7df…6662fa4 100644

— a/system/vold/Disk.h

+++ b/system/vold/Disk.h

@@ -52,6 +52,7 @@ public:

kUsb = 1 << 3,

/* Flag that disk is EMMC internal */

kEmmc = 1 << 4,

•    kPcie = 1 << 5,
  

};

const std::string& getId() { return mId; }

diff --git a/system/vold/VolumeManager.cpp b/system/vold/VolumeManager.cpp

index 5cc60a1…f766c5a 100644

— a/system/vold/VolumeManager.cpp

+++ b/system/vold/VolumeManager.cpp

@@ -302,11 +302,14 @@

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void VolumeManager::handleBlockEvent(NetlinkEvent *evt) {

// emulator-specific; see Disk.cpp for details) devices are SD,

// and that everything else is USB

int flags = source->getFlags();

•            LOG(VERBOSE) << "handleBlockEvent with action  kAdd flags" << flags;
  

if (major == kMajorBlockMmc

|| (android::vold::IsRunningInEmulator()

&& major >= (int) kMajorBlockExperimentalMin

文末

架构师不是天生的，是在项目中磨练起来的，所以，我们学了技术就需要结合项目进行实战训练，那么在Android里面最常用的架构无外乎 MVC，MVP，MVVM，但是这些思想如果和模块化，层次化，组件化混和在一起，那就不是一件那么简单的事了，我们需要一个真正身经百战的架构师才能讲解透彻其中蕴含的深理。

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标签：Vold,const,vold,int,system,PCI,static,Android,Disk
来源： https://blog.csdn.net/m0_65511857/article/details/122253878