libc/src/unistd/linux/fpathconf.cpp

   1 //===-- Linux implementation of fpathconf ---------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/unistd/fpathconf.h"
  10 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
  11 #include "src/__support/common.h"
  12 #include "src/__support/macros/config.h"
  13 #include "src/sys/statvfs/linux/statfs_utils.h"
  14 #include "src/unistd/linux/pathconf_utils.h"
  15
  16 namespace LIBC_NAMESPACE_DECL {
  17
  18 LLVM_LIBC_FUNCTION(long, fpathconf, (int fd, int name)) {
  19   if (cpp::optional<statfs_utils::LinuxStatFs> result =
  20           statfs_utils::linux_fstatfs(fd))
  21     return pathconfig(result.value(), name);
  22   return -1;
  23 }
  24
  25 } // namespace LIBC_NAMESPACE_DECL