glibc/sysdeps/generic/dl-fileid.h

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/* File identity for the dynamic linker. Stub version.
Copyright (C) 2015-2018 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 <stdbool.h>
/* 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;
}