1  /* Test for access to file, relative to open directory.  Stub version.
       2     Copyright (C) 2006-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <errno.h>
      20  #include <fcntl.h>
      21  #include <stddef.h>
      22  #include <unistd.h>
      23  #include <sys/types.h>
      24  
      25  int
      26  faccessat (int fd, const char *file, int type, int flag)
      27  {
      28    if (file == NULL || (flag & ~(AT_SYMLINK_NOFOLLOW | AT_EACCESS)) != 0
      29        || (type & ~(R_OK|W_OK|X_OK|F_OK)) != 0)
      30      {
      31        __set_errno (EINVAL);
      32        return -1;
      33      }
      34  
      35    if (fd < 0 && fd != AT_FDCWD)
      36      {
      37        __set_errno (EBADF);
      38        return -1;
      39      }
      40  
      41    __set_errno (ENOSYS);
      42    return -1;
      43  }
      44  stub_warning (faccessat)