libc/src/stdio/linux/rename.cpp

   1 //===-- Linux implementation of rename ------------------------------------===//
   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/stdio/rename.h"
  10 #include "hdr/fcntl_macros.h"
  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 #include <sys/syscall.h> // For syscall numbers.
  16
  17 namespace LIBC_NAMESPACE_DECL {
  18
  19 LLVM_LIBC_FUNCTION(int, rename, (const char *oldpath, const char *newpath)) {
  20   int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_renameat2, AT_FDCWD, oldpath,
  21                                               AT_FDCWD, newpath, 0);
  22
  23   if (ret >= 0)
  24     return 0;
  25   libc_errno = -ret;
  26   return -1;
  27 }
  28
  29 } // namespace LIBC_NAMESPACE_DECL