xref: /aosp_15_r20/external/llvm-libc/src/fcntl/linux/creat.cpp (revision 71db0c75aadcf003ffe3238005f61d7618a3fead)
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/macros/config.h"
14  #include "src/errno/libc_errno.h"
15  
16  #include "hdr/fcntl_macros.h"
17  #include <sys/syscall.h> // For syscall numbers.
18  
19  namespace LIBC_NAMESPACE_DECL {
20  
21  LLVM_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