1 /* Construct a pathname under /proc/self/fd (or /dev/fd for Hurd).
2 Copyright (C) 2020 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
19 #include <fd_to_filename.h>
25 __fd_to_filename (int descriptor
, struct fd_to_filename
*storage
)
27 assert (descriptor
>= 0);
29 char *p
= mempcpy (storage
->buffer
, FD_TO_FILENAME_PREFIX
,
30 strlen (FD_TO_FILENAME_PREFIX
));
32 for (int d
= descriptor
; p
++, (d
/= 10) != 0; )
35 for (int d
= descriptor
; *--p
= '0' + d
% 10, (d
/= 10) != 0; )
37 return storage
->buffer
;