| /* Query filename corresponding to an open FD. Linux version. |
| Copyright (C) 2001-2018 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/stat.h> |
| #include <_itoa.h> |
| |
| static inline const char * |
| fd_to_filename (int fd) |
| { |
| char *ret = malloc (30); |
| |
| if (ret != NULL) |
| { |
| struct stat64 st; |
| |
| *_fitoa_word (fd, __stpcpy (ret, "/proc/self/fd/"), 10, 0) = '\0'; |
| |
| /* We must make sure the file exists. */ |
| if (__lxstat64 (_STAT_VER, ret, &st) < 0) |
| { |
| /* /proc is not mounted or something else happened. Don't |
| return the file name. */ |
| free (ret); |
| ret = NULL; |
| } |
| } |
| return ret; |
| } |