From c01ae97eb8986600488332f4db98f4b6d6ebedbc Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Tue, 14 Jul 2015 13:15:26 -0700 Subject: Factor file identity rules out of generic rtld code. --- sysdeps/generic/dl-fileid.h | 46 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 sysdeps/generic/dl-fileid.h (limited to 'sysdeps/generic/dl-fileid.h') diff --git a/sysdeps/generic/dl-fileid.h b/sysdeps/generic/dl-fileid.h new file mode 100644 index 0000000000..2cbd21dcbe --- /dev/null +++ b/sysdeps/generic/dl-fileid.h @@ -0,0 +1,46 @@ +/* File identity for the dynamic linker. Stub version. + Copyright (C) 2015 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 + . */ + +#include + +/* This type stores whatever information is fetched by _dl_get_file_id + and compared by _dl_file_id_match_p. */ +struct r_file_id + { + /* In the stub version, we don't record anything at all. */ + }; + +/* Sample FD to fill in *ID. Returns true on success. + On error, returns false, with errno set. */ +static inline bool +_dl_get_file_id (int fd __attribute__ ((unused)), + struct r_file_id *id __attribute__ ((unused))) +{ + return true; +} + +/* Compare two results from _dl_get_file_id for equality. + It's crucial that this never return false-positive matches. + It's ideal that it never return false-negative mismatches either, + but lack of matches is survivable. */ +static inline bool +_dl_file_id_match_p (const struct r_file_id *a __attribute__ ((unused)), + const struct r_file_id *b __attribute__ ((unused))) +{ + return false; +} -- cgit 1.4.1