1//===-- Implementation of creat -------------------------------------------===//
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/fcntl/creat.h"
10
11#include "src/__support/OSUtil/syscall.h" // For internal syscall function.
12#include "src/__support/common.h"
13#include "src/__support/libc_errno.h"
14#include "src/__support/macros/config.h"
15
16#include "hdr/fcntl_macros.h"
17#include <sys/syscall.h> // For syscall numbers.
18
19namespace LIBC_NAMESPACE_DECL {
20
21LLVM_LIBC_FUNCTION(int, creat, (const char *path, int mode_flags)) {
22#ifdef SYS_open
23 int fd = LIBC_NAMESPACE::syscall_impl<int>(
24 SYS_open, path, O_CREAT | O_WRONLY | O_TRUNC, mode_flags);
25#else
26 int fd = LIBC_NAMESPACE::syscall_impl<int>(
27 SYS_openat, AT_FDCWD, path, O_CREAT | O_WRONLY | O_TRUNC, mode_flags);
28#endif
29
30 if (fd > 0)
31 return fd;
32
33 libc_errno = -fd;
34 return -1;
35}
36
37} // namespace LIBC_NAMESPACE_DECL
38

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source code of libc/src/fcntl/linux/creat.cpp