Built motion from commit 6a09e18b.|2.6.11

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

diff --git a/legacy-libs/grpc-cloned/deps/grpc/src/core/lib/gpr/env_linux.cc b/legacy-libs/grpc-cloned/deps/grpc/src/core/lib/gpr/env_linux.cc
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+++ b/legacy-libs/grpc-cloned/deps/grpc/src/core/lib/gpr/env_linux.cc
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+/*
+ *
+ * Copyright 2015 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.
+ *
+ */
+
+/* for secure_getenv. */
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_LINUX_ENV
+
+#include "src/core/lib/gpr/env.h"
+
+#include <dlfcn.h>
+#include <features.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gpr/useful.h"
+
+char* gpr_getenv(const char* name) {
+  char* result = nullptr;
+#if defined(GPR_BACKWARDS_COMPATIBILITY_MODE)
+  typedef char* (*getenv_type)(const char*);
+  static getenv_type getenv_func = nullptr;
+  /* Check to see which getenv variant is supported (go from most
+   * to least secure) */
+  if (getenv_func == nullptr) {
+    const char* names[] = {"secure_getenv", "__secure_getenv", "getenv"};
+    for (size_t i = 0; i < GPR_ARRAY_SIZE(names); i++) {
+      getenv_func = (getenv_type)dlsym(RTLD_DEFAULT, names[i]);
+      if (getenv_func != nullptr) {
+        break;
+      }
+    }
+  }
+  result = getenv_func(name);
+#elif __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 17)
+  result = secure_getenv(name);
+#else
+  result = getenv(name);
+#endif
+  return result == nullptr ? result : gpr_strdup(result);
+}
+
+void gpr_setenv(const char* name, const char* value) {
+  int res = setenv(name, value, 1);
+  GPR_ASSERT(res == 0);
+}
+
+void gpr_unsetenv(const char* name) {
+  int res = unsetenv(name);
+  GPR_ASSERT(res == 0);
+}
+
+#endif /* GPR_LINUX_ENV */