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 
14 #include <errno.h>
15 #include <fcntl.h>
16 #include <sys/syscall.h> // For syscall numbers.
17 
18 namespace __llvm_libc {
19 
20 LLVM_LIBC_FUNCTION(int, creat, (const char *path, int mode_flags)) {
21 #ifdef SYS_open
22   int fd = __llvm_libc::syscall(SYS_open, path, O_CREAT | O_WRONLY | O_TRUNC,
23                                 mode_flags);
24 #else
25   int fd = __llvm_libc::syscall(SYS_openat, AT_FDCWD, path,
26                                 O_CREAT | O_WRONLY | O_TRUNC, mode_flags);
27 #endif
28 
29   if (fd > 0)
30     return fd;
31 
32   errno = -fd;
33   return -1;
34 }
35 
36 } // namespace __llvm_libc
37