Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc-cloned / deps / grpc / src / core / lib / iomgr / internal_errqueue.cc

diff --git a/legacy-libs/grpc-cloned/deps/grpc/src/core/lib/iomgr/internal_errqueue.cc b/legacy-libs/grpc-cloned/deps/grpc/src/core/lib/iomgr/internal_errqueue.cc
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+++ b/legacy-libs/grpc-cloned/deps/grpc/src/core/lib/iomgr/internal_errqueue.cc
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+/*
+ *
+ * Copyright 2018 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.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#include <grpc/impl/codegen/log.h>
+#include "src/core/lib/iomgr/internal_errqueue.h"
+
+#ifdef GRPC_POSIX_SOCKET_TCP
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/utsname.h>
+
+namespace grpc_core {
+static bool errqueue_supported = false;
+
+bool kernel_supports_errqueue() { return errqueue_supported; }
+
+void grpc_errqueue_init() {
+/* Both-compile time and run-time linux kernel versions should be at least 4.0.0
+ */
+#ifdef GRPC_LINUX_ERRQUEUE
+  struct utsname buffer;
+  if (uname(&buffer) != 0) {
+    gpr_log(GPR_ERROR, "uname: %s", strerror(errno));
+    return;
+  }
+  char* release = buffer.release;
+  if (release == nullptr) {
+    return;
+  }
+
+  if (strtol(release, nullptr, 10) >= 4) {
+    errqueue_supported = true;
+  } else {
+    gpr_log(GPR_DEBUG, "ERRQUEUE support not enabled");
+  }
+#endif /* GRPC_LINUX_ERRQUEUE */
+}
+} /* namespace grpc_core */
+
+#else
+
+namespace grpc_core {
+void grpc_errqueue_init() {}
+} /* namespace grpc_core */
+
+#endif /* GRPC_POSIX_SOCKET_TCP */