1  /* Query filename corresponding to an open FD.
       2     Copyright (C) 2001-2023 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  #ifndef _FD_TO_FILENAME_H
      20  #define _FD_TO_FILENAME_H
      21  
      22  #include <arch-fd_to_filename.h>
      23  #include <intprops.h>
      24  
      25  struct fd_to_filename
      26  {
      27    /* A positive int value has at most 10 decimal digits.  */
      28    char buffer[sizeof (FD_TO_FILENAME_PREFIX) + INT_STRLEN_BOUND (int)];
      29  };
      30  
      31  /* Writes a /proc/self/fd-style path for DESCRIPTOR to *STORAGE and
      32     returns a pointer to the start of the string.  DESCRIPTOR must be
      33     non-negative.  */
      34  char *__fd_to_filename (int descriptor, struct fd_to_filename *storage)
      35    attribute_hidden;
      36  
      37  #endif /* _FD_TO_FILENAME_H */