diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/fd_to_filename.h')
-rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/fd_to_filename.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/fd_to_filename.h b/REORG.TODO/sysdeps/unix/sysv/linux/fd_to_filename.h new file mode 100644 index 0000000000..414a30f18a --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/fd_to_filename.h @@ -0,0 +1,45 @@ +/* Query filename corresponding to an open FD. Linux version. + Copyright (C) 2001-2017 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; +} |