1/* Query filename corresponding to an open FD.
2 Copyright (C) 2001-2021 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
25struct 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. */
34char *__fd_to_filename (int descriptor, struct fd_to_filename *storage)
35 attribute_hidden;
36
37#endif /* _FD_TO_FILENAME_H */
38