1 //
2 //
3 // Copyright 2017 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 #include "src/core/lib/iomgr/gethostname.h"
22 #include "src/core/lib/iomgr/port.h"
23 
24 #ifdef GRPC_POSIX_HOST_NAME_MAX
25 
26 #include <limits.h>
27 #include <unistd.h>
28 
29 #include <grpc/support/alloc.h>
30 
grpc_gethostname()31 char* grpc_gethostname() {
32   char* hostname = static_cast<char*>(gpr_malloc(HOST_NAME_MAX));
33   if (gethostname(hostname, HOST_NAME_MAX) != 0) {
34     gpr_free(hostname);
35     return nullptr;
36   }
37   return hostname;
38 }
39 
40 #endif  // GRPC_POSIX_HOST_NAME_MAX
41