libc/src/spawn/posix_spawn_file_actions_adddup2.cpp

   1 //===-- Implementation of posix_spawn_file_actions_adddup2 ----------------===//
   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 "posix_spawn_file_actions_adddup2.h"
  10
  11 #include "file_actions.h"
  12 #include "src/__support/CPP/new.h"
  13 #include "src/__support/common.h"
  14 #include "src/__support/macros/config.h"
  15 #include "src/errno/libc_errno.h"
  16
  17 #include <spawn.h>
  18
  19 namespace LIBC_NAMESPACE_DECL {
  20
  21 LLVM_LIBC_FUNCTION(int, posix_spawn_file_actions_adddup2,
  22                    (posix_spawn_file_actions_t * actions, int fd, int newfd)) {
  23   if (actions == nullptr)
  24     return EINVAL;
  25   if (fd < 0 || newfd < 0)
  26     return EBADF;
  27
  28   AllocChecker ac;
  29   auto *act = new (ac) SpawnFileDup2Action(fd, newfd);
  30   if (!ac)
  31     return ENOMEM;
  32   BaseSpawnFileAction::add_action(actions, act);
  33
  34   return 0;
  35 }
  36
  37 } // namespace LIBC_NAMESPACE_DECL