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

   1 //===-- Linux implementation of mkdir -------------------------------------===//
   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/mkdir.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/stat.h>
  17 #include <sys/syscall.h> // For syscall numbers.
  18
  19 namespace __llvm_libc {
  20
  21 LLVM_LIBC_FUNCTION(int, mkdir, (const char *path, mode_t mode)) {
  22 #ifdef SYS_mkdir
  23   long ret = __llvm_libc::syscall_impl(SYS_mkdir, path, mode);
  24 #elif defined(SYS_mkdirat)
  25   long ret = __llvm_libc::syscall_impl(SYS_mkdirat, AT_FDCWD, path, mode);
  26 #else
  27 #error "mkdir and mkdirat syscalls not available."
  28 #endif
  29
  30   if (ret < 0) {
  31     errno = -ret;
  32     return -1;
  33   }
  34   return 0;
  35 }
  36
  37 } // namespace __llvm_libc