Apache Mesos
realpath.hpp
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1 // Licensed under the Apache License, Version 2.0 (the "License");
2 // you may not use this file except in compliance with the License.
3 // You may obtain a copy of the License at
4 //
5 // http://www.apache.org/licenses/LICENSE-2.0
6 //
7 // Unless required by applicable law or agreed to in writing, software
8 // distributed under the License is distributed on an "AS IS" BASIS,
9 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
10 // See the License for the specific language governing permissions and
11 // limitations under the License.
12 
13 #ifndef __STOUT_OS_POSIX_REALPATH_HPP__
14 #define __STOUT_OS_POSIX_REALPATH_HPP__
15 
16 #include <string>
17 
18 #include <stout/error.hpp>
19 #include <stout/result.hpp>
20 
21 
22 namespace os {
23 
24 inline Result<std::string> realpath(const std::string& path)
25 {
26  char temp[PATH_MAX];
27  if (::realpath(path.c_str(), temp) == nullptr) {
28  if (errno == ENOENT || errno == ENOTDIR) {
29  return None();
30  }
31 
32  return ErrnoError();
33  }
34 
35  return std::string(temp);
36 }
37 
38 } // namespace os {
39 
40 #endif // __STOUT_OS_POSIX_REALPATH_HPP__
Definition: path.hpp:26
Result< std::string > realpath(const std::string &path)
Definition: realpath.hpp:24
Definition: errorbase.hpp:49
Definition: posix_signalhandler.hpp:23
Definition: check.hpp:30
#define PATH_MAX
Definition: windows.hpp:170
Definition: none.hpp:27
std::string temp()
Definition: temp.hpp:27