libc/src/sys/stat/linux/mkdirat.cpp

   1 //===-- Linux implementation of mkdirat -----------------------------------===//
   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/sys/stat/mkdirat.h"
  10
  11 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
  12 #include "src/__support/common.h"
  13
  14 #include "src/__support/macros/config.h"
  15 #include "src/errno/libc_errno.h"
  16 #include <sys/stat.h>
  17 #include <sys/syscall.h> // For syscall numbers.
  18
  19 namespace LIBC_NAMESPACE_DECL {
  20
  21 LLVM_LIBC_FUNCTION(int, mkdirat, (int dfd, const char *path, mode_t mode)) {
  22 #ifdef SYS_mkdirat
  23   int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_mkdirat, dfd, path, mode);
  24 #else
  25 #error "mkdirat syscall not available."
  26 #endif
  27
  28   if (ret < 0) {
  29     libc_errno = -ret;
  30     return -1;
  31   }
  32   return 0;
  33 }
  34
  35 } // namespace LIBC_NAMESPACE_DECL