os: migrate node_os.cc to internal/errors

PR-URL: #16567
Reviewed-By: Joyee Cheung <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>

Author: jasnell

lib/os.js

@@ -27,21 +27,43 @@ const { deprecate } = require('internal/util');
 const { getCIDRSuffix } = require('internal/os');
 const isWindows = process.platform === 'win32';
 
+const errors = require('internal/errors');
+
 const {
   getCPUs,
   getFreeMem,
-  getHomeDirectory,
-  getHostname,
-  getInterfaceAddresses,
+  getHomeDirectory: _getHomeDirectory,
+  getHostname: _getHostname,
+  getInterfaceAddresses: _getInterfaceAddresses,
   getLoadAvg,
-  getOSRelease,
-  getOSType,
+  getOSRelease: _getOSRelease,
+  getOSType: _getOSType,
   getTotalMem,
-  getUserInfo,
+  getUserInfo: _getUserInfo,
   getUptime,
   isBigEndian
 } = process.binding('os');
 
+function getCheckedFunction(fn) {
+  return function checkError(...args) {
+    const ctx = {};
+    const ret = fn(...args, ctx);
+    if (ret === undefined) {
+      const err = new errors.SystemError(ctx);
+      Error.captureStackTrace(err, checkError);
+      throw err;
+    }
+    return ret;
+  };
+}
+
+const getHomeDirectory = getCheckedFunction(_getHomeDirectory);
+const getHostname = getCheckedFunction(_getHostname);
+const getInterfaceAddresses = getCheckedFunction(_getInterfaceAddresses);
+const getOSRelease = getCheckedFunction(_getOSRelease);
+const getOSType = getCheckedFunction(_getOSType);
+const getUserInfo = getCheckedFunction(_getUserInfo);
+
 getFreeMem[Symbol.toPrimitive] = () => getFreeMem();
 getHostname[Symbol.toPrimitive] = () => getHostname();
 getHomeDirectory[Symbol.toPrimitive] = () => getHomeDirectory();

src/node_os.cc

@@ -72,7 +72,9 @@ static void GetHostname(const FunctionCallbackInfo<Value>& args) {
 #else  // __MINGW32__
     int errorno = WSAGetLastError();
 #endif  // __POSIX__
-    return env->ThrowErrnoException(errorno, "gethostname");
+    CHECK_GE(args.Length(), 1);
+    env->CollectExceptionInfo(args[args.Length() - 1], errorno, "gethostname");
+    return args.GetReturnValue().SetUndefined();
   }
   buf[sizeof(buf) - 1] = '\0';
 
@@ -87,7 +89,9 @@ static void GetOSType(const FunctionCallbackInfo<Value>& args) {
 #ifdef __POSIX__
   struct utsname info;
   if (uname(&info) < 0) {
-    return env->ThrowErrnoException(errno, "uname");
+    CHECK_GE(args.Length(), 1);
+    env->CollectExceptionInfo(args[args.Length() - 1], errno, "uname");
+    return args.GetReturnValue().SetUndefined();
   }
   rval = info.sysname;
 #else  // __MINGW32__
@@ -105,7 +109,9 @@ static void GetOSRelease(const FunctionCallbackInfo<Value>& args) {
 #ifdef __POSIX__
   struct utsname info;
   if (uname(&info) < 0) {
-    return env->ThrowErrnoException(errno, "uname");
+    CHECK_GE(args.Length(), 1);
+    env->CollectExceptionInfo(args[args.Length() - 1], errno, "uname");
+    return args.GetReturnValue().SetUndefined();
   }
 # ifdef _AIX
   char release[256];
@@ -242,7 +248,10 @@ static void GetInterfaceAddresses(const FunctionCallbackInfo<Value>& args) {
   if (err == UV_ENOSYS) {
     return args.GetReturnValue().Set(ret);
   } else if (err) {
-    return env->ThrowUVException(err, "uv_interface_addresses");
+    CHECK_GE(args.Length(), 1);
+    env->CollectUVExceptionInfo(args[args.Length() - 1], errno,
+                                "uv_interface_addresses");
+    return args.GetReturnValue().SetUndefined();
   }
 
   for (i = 0; i < count; i++) {
@@ -319,7 +328,9 @@ static void GetHomeDirectory(const FunctionCallbackInfo<Value>& args) {
   const int err = uv_os_homedir(buf, &len);
 
   if (err) {
-    return env->ThrowUVException(err, "uv_os_homedir");
+    CHECK_GE(args.Length(), 1);
+    env->CollectUVExceptionInfo(args[args.Length() - 1], err, "uv_os_homedir");
+    return args.GetReturnValue().SetUndefined();
   }
 
   Local<String> home = String::NewFromUtf8(env->isolate(),
@@ -351,7 +362,10 @@ static void GetUserInfo(const FunctionCallbackInfo<Value>& args) {
   const int err = uv_os_get_passwd(&pwd);
 
   if (err) {
-    return env->ThrowUVException(err, "uv_os_get_passwd");
+    CHECK_GE(args.Length(), 2);
+    env->CollectUVExceptionInfo(args[args.Length() - 1], err,
+                                "uv_os_get_passwd");
+    return args.GetReturnValue().SetUndefined();
   }
 
   Local<Value> error;