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 <stddef.h>
      20  #include <unistd.h>
      21  
      22  
      23  /* Get file-specific information about descriptor FD.  */
      24  long int
      25  __fpathconf (int fd, int name)
      26  {
      27    if (fd < 0)
      28      {
      29        __set_errno (EBADF);
      30        return -1;
      31      }
      32  
      33    switch (name)
      34      {
      35      default:
      36        __set_errno (EINVAL);
      37        return -1;
      38  
      39      case _PC_LINK_MAX:
      40      case _PC_MAX_CANON:
      41      case _PC_MAX_INPUT:
      42      case _PC_NAME_MAX:
      43      case _PC_PATH_MAX:
      44      case _PC_PIPE_BUF:
      45      case _PC_SOCK_MAXBUF:
      46      case _PC_CHOWN_RESTRICTED:
      47      case _PC_NO_TRUNC:
      48      case _PC_VDISABLE:
      49        break;
      50      }
      51  
      52    __set_errno (ENOSYS);
      53    return -1;
      54  }
      55  
      56  weak_alias (__fpathconf, fpathconf)
      57  
      58  stub_warning (fpathconf)