mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-29 05:51:10 +00:00
fa185f0d45
The new type struct fd_to_filename makes the allocation of the backing storage explicit. Hurd uses /dev/fd, not /proc/self/fd. Co-Authored-By: Paul Eggert <eggert@cs.ucla.edu>
39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
/* Construct a pathname under /proc/self/fd (or /dev/fd for Hurd).
|
|
Copyright (C) 2020 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <fd_to_filename.h>
|
|
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
|
|
char *
|
|
__fd_to_filename (int descriptor, struct fd_to_filename *storage)
|
|
{
|
|
assert (descriptor >= 0);
|
|
|
|
char *p = mempcpy (storage->buffer, FD_TO_FILENAME_PREFIX,
|
|
strlen (FD_TO_FILENAME_PREFIX));
|
|
|
|
for (int d = descriptor; p++, (d /= 10) != 0; )
|
|
continue;
|
|
*p = '\0';
|
|
for (int d = descriptor; *--p = '0' + d % 10, (d /= 10) != 0; )
|
|
continue;
|
|
return storage->buffer;
|
|
}
|