| //===-- Implementation of openat ------------------------------------------===// |
| // 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 |
| //===----------------------------------------------------------------------===// |
| #include "src/fcntl/openat.h" |
| #include "src/__support/OSUtil/syscall.h" // For internal syscall function. |
| #include "src/__support/common.h" |
| #include "src/__support/macros/config.h" |
| #include "src/errno/libc_errno.h" |
| #include "hdr/types/mode_t.h" |
| #include <sys/syscall.h> // For syscall numbers. |
| namespace LIBC_NAMESPACE_DECL { |
| LLVM_LIBC_FUNCTION(int, openat, (int dfd, const char *path, int flags, ...)) { |
| // O_TMPFILE is a multi-bit flag so we test all bits by checking for equality |
| if ((flags & O_CREAT) || (flags & O_TMPFILE) == O_TMPFILE) { |
| va_start(varargs, flags); |
| mode_flags = va_arg(varargs, mode_t); |
| int fd = LIBC_NAMESPACE::syscall_impl<int>(SYS_openat, dfd, path, flags, |
| } // namespace LIBC_NAMESPACE_DECL |