mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-01 01:00:10 +00:00
75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
|
/* Dummy audit library for test-audit-threads.
|
||
|
|
|
||
|
|
Copyright (C) 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 <elf.h>
|
||
|
|
#include <link.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <assert.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
/* We must use a dummy LD_AUDIT module to force the dynamic loader to
|
||
|
|
*not* update the real PLT, and instead use a cached value for the
|
||
|
|
lazy resolution result. It is the update of that cached value that
|
||
|
|
we are testing for correctness by doing this. */
|
||
|
|
|
||
|
|
/* Library to be audited. */
|
||
|
|
#define LIB "tst-audit-threads-mod2.so"
|
||
|
|
/* CALLNUM is the number of retNum functions. */
|
||
|
|
#define CALLNUM 7999
|
||
|
|
|
||
|
|
#define CONCATX(a, b) __CONCAT (a, b)
|
||
|
|
|
||
|
|
static int previous = 0;
|
||
|
|
|
||
|
|
unsigned int
|
||
|
|
la_version (unsigned int ver)
|
||
|
|
{
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned int
|
||
|
|
la_objopen (struct link_map *map, Lmid_t lmid, uintptr_t *cookie)
|
||
|
|
{
|
||
|
|
return LA_FLG_BINDTO | LA_FLG_BINDFROM;
|
||
|
|
}
|
||
|
|
|
||
|
|
uintptr_t
|
||
|
|
CONCATX(la_symbind, __ELF_NATIVE_CLASS) (ElfW(Sym) *sym,
|
||
|
|
unsigned int ndx,
|
||
|
|
uintptr_t *refcook,
|
||
|
|
uintptr_t *defcook,
|
||
|
|
unsigned int *flags,
|
||
|
|
const char *symname)
|
||
|
|
{
|
||
|
|
const char * retnum = "retNum";
|
||
|
|
char * num = strstr (symname, retnum);
|
||
|
|
int n;
|
||
|
|
/* Validate if the symbols are getting called in the correct order.
|
||
|
|
This code is here to verify binutils does not optimize out the PLT
|
||
|
|
entries that require the symbol binding. */
|
||
|
|
if (num != NULL)
|
||
|
|
{
|
||
|
|
n = atoi (num);
|
||
|
|
assert (n >= previous);
|
||
|
|
assert (n <= CALLNUM);
|
||
|
|
previous = n;
|
||
|
|
}
|
||
|
|
return sym->st_value;
|
||
|
|
}
|