snapshot of https://github.com/grpc/grpc-go.git (master, 2026-09-15; blobs > 131072B omitted)

internal/transport/readyreader/raw_conn_linux.go

@@ -0,0 +1,39 @@
+/*
+ *
+ * Copyright 2026 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package readyreader
+
+import "syscall"
+
+func isRawConnSupported() bool {
+	return true
+}
+
+// sysRead uses the standard syscall package rather than the modern unix package
+// to avoid triggering the race detector. Because both packages perform sync
+// operations on a local variable to satisfy the race detector, mixing them
+// for read and write syscalls causes data races. We use syscall here to remain
+// consistent with net.Conn implementations in standard library.
+func sysRead(fd uintptr, p []byte) (int, error) {
+	return syscall.Read(int(fd), p)
+}
+
+// wouldBlock checks standard Unix non-blocking errors.
+func wouldBlock(err error) bool {
+	return err == syscall.EAGAIN || err == syscall.EWOULDBLOCK
+}