libc/src/__support/OSUtil/linux/syscall_wrappers/open.h

//===-- Implementation header for open --------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIBC_SRC___SUPPORT_OSUTIL_SYSCALL_WRAPPERS_OPEN_H
#define LLVM_LIBC_SRC___SUPPORT_OSUTIL_SYSCALL_WRAPPERS_OPEN_H

#include "hdr/fcntl_macros.h"
#include "hdr/types/mode_t.h"
#include "src/__support/OSUtil/linux/syscall.h" // syscall_impl
#include "src/__support/common.h"
#include "src/__support/error_or.h"
#include "src/__support/macros/config.h"
#include <sys/syscall.h> // For syscall numbers

namespace LIBC_NAMESPACE_DECL {
namespace linux_syscalls {

LIBC_INLINE ErrorOr<int> open(const char *path, int flags, mode_t mode_flags) {
#ifdef SYS_open
  int fd = syscall_impl<int>(SYS_open, path, flags, mode_flags);
#else
  int fd = syscall_impl<int>(SYS_openat, AT_FDCWD, path, flags, mode_flags);
#endif
  if (fd < 0)
    return Error(-fd);
  return fd;
}

} // namespace linux_syscalls
} // namespace LIBC_NAMESPACE_DECL

#endif // LLVM_LIBC_SRC___SUPPORT_OSUTIL_SYSCALL_WRAPPERS_OPEN_H