1 //
2 //
3 // Copyright 2015 gRPC authors.
4 //
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
8 //
9 //     http://www.apache.org/licenses/LICENSE-2.0
10 //
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
16 //
17 //
18 
19 #include <grpc/support/port_platform.h>
20 
21 #ifdef GPR_POSIX_ENV
22 
23 #include <stdlib.h>
24 
25 #include "src/core/lib/gprpp/env.h"
26 
27 namespace grpc_core {
28 
GetEnv(const char * name)29 absl::optional<std::string> GetEnv(const char* name) {
30   char* result = getenv(name);
31   if (result == nullptr) return absl::nullopt;
32   return result;
33 }
34 
SetEnv(const char * name,const char * value)35 void SetEnv(const char* name, const char* value) {
36   int res = setenv(name, value, 1);
37   if (res != 0) abort();
38 }
39 
UnsetEnv(const char * name)40 void UnsetEnv(const char* name) {
41   int res = unsetenv(name);
42   if (res != 0) abort();
43 }
44 
45 }  // namespace grpc_core
46 
47 #endif  // GPR_POSIX_ENV
48