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 <errno.h>
  15 #include <sys/stat.h>
  16 #include <sys/syscall.h> // For syscall numbers.
  17
  18 namespace __llvm_libc {
  19
  20 LLVM_LIBC_FUNCTION(int, mkdirat, (int dfd, const char *path, mode_t mode)) {
  21 #ifdef SYS_mkdirat
  22   long ret = __llvm_libc::syscall_impl(SYS_mkdirat, dfd, path, mode);
  23 #else
  24 #error "mkdirat syscalls not available."
  25 #endif
  26
  27   if (ret < 0) {
  28     errno = -ret;
  29     return -1;
  30   }
  31   return 0;
  32 }
  33
  34 } // namespace __llvm_libc