[从IOServiceOpen连接到SystemExtension IOService的kIOReturnNotPermitted

问题描述 投票：1回答：2

我正在尝试创建与SystemExtension IOService的客户端连接。我可以看到我的IOUserClient子类已创建（init()和Start(IOService*)被调用），但是IOServiceOpen的返回代码返回kIOReturnNotPermitted。

我正在从创建激活请求的同一应用中调用IOServiceOpen。

提出激活请求/调用IOServiceOpen的应用的权利：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>com.apple.developer.driverkit.userclient-access</key>
  <array>
    <string>sc.example.MyUserUSBInterfaceDriver</string>
  </array>
    <key>com.apple.developer.system-extension.install</key>
    <true/>
    <key>com.apple.developer.system-extension.uninstall</key>
    <true/>
</dict>
</plist>

dext的权利：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>com.apple.developer.driverkit.userclient-access</key>
  <array>
    <string>sc.example.USBApp</string>
  </array>
    <key>com.apple.developer.driverkit</key>
    <true/>
    <key>com.apple.developer.driverkit.transport.usb</key>
    <true/>
</dict>
</plist>

MyUserClient：

#ifndef MyUserClient_h
#define MyUserClient_h

#include <DriverKit/IOUserClient.iig>

class MyUserClient : public IOUserClient {
public:
  bool init() override;
  kern_return_t Start(IOService* provider) override;
  kern_return_t Stop(IOService* provider) override;
  void free() override;
};

#endif /* MyUserClient_h */

bool MyUserClient::init() {
  LOG();
  if (!super::init()) {
    LOG("super::init() failed");
    return false;
  }
  return true;
}

kern_return_t IMPL(MyUserClient, Start) {
  LOG();
  auto ret = Start(provider, SUPERDISPATCH);
  if (ret != kIOReturnSuccess) {
    LOG("SUPERDISPATCH Start failed, ret: %{public}d", ret);
  }
  return ret;
}

kern_return_t IMPL(MyUserClient, Stop) {
  LOG();
  auto ret = Stop(provider, SUPERDISPATCH);
  if (ret != kIOReturnSuccess) {
    LOG("SUPERDISPATCH Stop failed, ret: %{public}d", ret);
  }
  return ret;
}

void MyUserClient::free() {
  super::free();
  LOG();
}

LOG只是执行os_log(OS_LOG_DEFAULT, ...]的宏>

NewUserClient实现：

kern_return_t IMPL(MyUserUSBInterfaceDriver, NewUserClient) {
  LOG("%{public}d:", type);

  IOService* client;

  auto ret = Create(this, "UserClientProperties", &client);
  *userClient = OSDynamicCast(IOUserClient, client);
  if (!(*userClient) || ret != kIOReturnSuccess) {
    LOG("Failed to create IOUserClient, %{public}d", ret);
  }
  return ret;
}

连接到系统扩展的代码：
void connectToDext(io_service_t* serviceObject) {
  io_connect_t dataPort;

  kern_return_t kernResult =IOServiceOpen(*serviceObject, mach_task_self(), 123, &dataPort);
  if (kernResult != KERN_SUCCESS) {
    printf("IOServicceOpen failed: %d, %s\n", kernResult, kern_return_t_toCStr(kernResult));
  }
  kernResult = IOServiceClose(dataPort);
  if (kernResult != KERN_SUCCESS) {
    printf("IOServicceClosed failed: %d, %s\n", kernResult, kern_return_t_toCStr(kernResult));
  }
}

int connectToFirstDext() {
      CFMutableDictionaryRef matchingDict;
      matchingDict = IOServiceMatching("IOService");

      if (matchingDict == 0) {
        return -1;
      }

      io_iterator_t iter;
      if (IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, &iter) !=
          KERN_SUCCESS) {
        printf("IOServiceGetMatchingServices failed.\n");
        return -1;
      }

      io_service_t device;
      while ((device = IOIteratorNext(iter))) {
        io_name_t deviceName;
        if (IORegistryEntryGetName(device, deviceName) == KERN_SUCCESS) {
          printf("name: %s\n", deviceName);
          if (strcmp(deviceName, "MyUserUSBInterfaceDriver") == 0) {
            printf("Calling connect\n");
            connectToDext(&device);
          }
        }
        IOObjectRelease(device);
      }

      IOObjectRelease(iter);

    return 0;
}

编辑：

应用程序的信息列表

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>BuildMachineOSBuild</key>
    <string>19E287</string>
    <key>CFBundleDevelopmentRegion</key>
    <string>en</string>
    <key>CFBundleExecutable</key>
    <string>USBApp</string>
    <key>CFBundleIdentifier</key>
    <string>sc.example.USBApp</string>
    <key>CFBundleInfoDictionaryVersion</key>
    <string>6.0</string>
    <key>CFBundleName</key>
    <string>USBApp</string>
    <key>CFBundlePackageType</key>
    <string>APPL</string>
    <key>CFBundleShortVersionString</key>
    <string>1.0</string>
    <key>CFBundleSupportedPlatforms</key>
    <array>
        <string>MacOSX</string>
    </array>
    <key>CFBundleVersion</key>
    <string>1</string>
    <key>DTCompiler</key>
    <string>com.apple.compilers.llvm.clang.1_0</string>
    <key>DTPlatformBuild</key>
    <string>11E503a</string>
    <key>DTPlatformVersion</key>
    <string>GM</string>
    <key>DTSDKBuild</key>
    <string>19E258</string>
    <key>DTSDKName</key>
    <string>macosx10.15</string>
    <key>DTXcode</key>
    <string>1141</string>
    <key>DTXcodeBuild</key>
    <string>11E503a</string>
    <key>LSMinimumSystemVersion</key>
    <string>10.15</string>
    <key>NSHumanReadableCopyright</key>
    <string>Copyright © 2020 Example. All rights reserved.</string>
    <key>NSMainNibFile</key>
    <string>MainMenu</string>
    <key>NSPrincipalClass</key>
    <string>NSApplication</string>
    <key>NSSupportsAutomaticTermination</key>
    <true/>
    <key>NSSupportsSuddenTermination</key>
    <true/>
</dict>
</plist>

dext的Info.plist：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>BuildMachineOSBuild</key>
    <string>19E287</string>
    <key>CFBundleDevelopmentRegion</key>
    <string>en</string>
    <key>CFBundleExecutable</key>
    <string>sc.example.MyUserUSBInterfaceDriver</string>
    <key>CFBundleIdentifier</key>
    <string>sc.example.MyUserUSBInterfaceDriver</string>
    <key>CFBundleInfoDictionaryVersion</key>
    <string>6.0</string>
    <key>CFBundleName</key>
    <string>sc.example.MyUserUSBInterfaceDriver</string>
    <key>CFBundlePackageType</key>
    <string>DEXT</string>
    <key>CFBundleShortVersionString</key>
    <string>1.0</string>
    <key>CFBundleSupportedPlatforms</key>
    <array>
        <string>MacOSX</string>
    </array>
    <key>CFBundleVersion</key>
    <string>1</string>
    <key>DTCompiler</key>
    <string>com.apple.compilers.llvm.clang.1_0</string>
    <key>DTPlatformBuild</key>
    <string>11E503a</string>
    <key>DTPlatformVersion</key>
    <string>GM</string>
    <key>DTSDKBuild</key>
    <string></string>
    <key>DTSDKName</key>
    <string>driverkit.macosx19.0</string>
    <key>DTXcode</key>
    <string>1141</string>
    <key>DTXcodeBuild</key>
    <string>11E503a</string>
    <key>IOKitPersonalities</key>
    <dict>
        <key>example_device</key>
        <dict>
            <key>CFBundleIdentifier</key>
            <string>sc.example.MyUserUSBInterfaceDriver</string>
            <key>IOClass</key>
            <string>IOUserService</string>
            <key>IOProviderClass</key>
            <string>IOUSBHostInterface</string>
            <key>IOUserClass</key>
            <string>MyUserUSBInterfaceDriver</string>
            <key>IOUserServerName</key>
            <string>sc.example.MyUserUSBInterfaceDriver</string>
            <key>UserClientProperties</key>
            <dict>
                <key>IOClass</key>
                <string>IOUserUserClient</string>
                <key>IOServiceDEXTEntitlements</key>
                <string></string>
                <key>IOUserClass</key>
                <string>MyUserClient</string>
            </dict>
            <key>bConfigurationValue</key>
            <integer>1</integer>
            <key>bInterfaceNumber</key>
            <integer>0</integer>
            <key>idProduct</key>
            <integer>8</integer>
            <key>idVendor</key>
            <integer>1234</integer>
        </dict>     
    </dict>
    <key>OSBundleUsageDescription</key>
    <string>Example user space USB driver</string>
    <key>OSMinimumDriverKitVersion</key>
    <string>19.4</string>
</dict>
</plist>

我正在尝试创建与SystemExtension IOService的客户端连接。我可以看到我的IOUserClient子类已创建（init（）和Start（IOService *）被调用），但是返回代码来自...

c++ macos-catalina iokit macos-system-extension driverkit
2个回答
0
投票

我没有发现您发布的内容有任何明显错误，因此我怀疑您的问题可能是由于您没有

0
投票
与您的问题有关-我将尝试分别回答您的实际问题-但我注意到您通过遍历所有codesign -dv path/to/your.app对象来查找服务。通过直接使用属性匹配进行匹配，可以更加优雅地找到它。我使用一个辅助函数来生成匹配的字典，看起来像这样：
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