#pragma once

#include "fs_open.hpp"
#include "ugid.hpp"

// Linux can set ugid because it allows for credentials per
// thread. FreeBSD however does not and must create as root then
// chown. Another option for both platforms would be to create a temp
// file, chown, then rename to target. Unfortunately, depending on if
// the target filesystem is POSIX compliant or uses POSIX / extended
// ACLs it is not possible to know what is best.


#if defined __linux__
namespace fs
{
  static
  inline
  int
  open_as(const ugid_t    ugid_,
          const fs::path &path_,
          const int       flags_,
          const mode_t    mode_)
  {
    const ugid::SetGuard _(ugid_);

    return fs::open(path_,flags_,mode_);
  }
}
#elif defined __FreeBSD__
#include "fs_fchown.hpp"

namespace fs
{
  static
  inline
  int
  open_as(const ugid_t    ugid_,
          const fs::path &path_,
          const int       flags_,
          const mode_t    mode_)
  {
    int rv;

    rv = fs::open(path_,flags_,mode_);
    if(rv < 0)
      return rv;

    fs::fchown(rv,ugid_.uid,ugid_.gid);

    return rv;
  }
}
#else
#error "Not Supported!"
#endif