libc/src/unistd/linux/rmdir.cpp

   1 //===-- Linux implementation of rmdir -------------------------------------===//
   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/unistd/rmdir.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, rmdir, (const char *path)) {
  22 #ifdef SYS_rmdir
  23   int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_rmdir, path);
  24 #elif defined(SYS_unlinkat)
  25   int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_unlinkat, AT_FDCWD, path,
  26                                               AT_REMOVEDIR);
  27 #else
  28 #error "rmdir and unlinkat syscalls not available."
  29 #endif
  30
  31   if (ret < 0) {
  32     libc_errno = -ret;
  33     return -1;
  34   }
  35   return 0;
  36 }
  37
  38 } // namespace LIBC_NAMESPACE_DECL