1  /* Copyright (C) 1991-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <errno.h>
      19  #include <fcntl.h>
      20  #include <stddef.h>
      21  #include <sys/stat.h>
      22  #include <sys/types.h>
      23  
      24  
      25  /* Create a directory named PATH relative to FD with protections MODE.  */
      26  int
      27  mkdirat (int fd, const char *path, mode_t mode)
      28  {
      29    if (path == NULL)
      30      {
      31        __set_errno (EINVAL);
      32        return -1;
      33      }
      34  
      35    if (fd != AT_FDCWD && path[0] != '/')
      36      {
      37        /* Check FD is associated with a directory.  */
      38        struct stat64 st;
      39        if (__fstat64 (fd, &st) != 0)
      40  	return -1;
      41  
      42        if (!S_ISDIR (st.st_mode))
      43  	{
      44  	  __set_errno (ENOTDIR);
      45  	  return -1;
      46  	}
      47      }
      48  
      49    __set_errno (ENOSYS);
      50    return -1;
      51  }
      52  stub_warning (mkdirat)