1 /* Query filename corresponding to an open FD.
2    Copyright (C) 2001-2022 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 */
38