1/* Check LD_AUDIT with static TLS.
2 Copyright (C) 2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <ctype.h>
20#include <stdlib.h>
21#include <link.h>
22
23#define tls_ie __attribute__ ((tls_model ("initial-exec")))
24
25__thread int tls_var0 tls_ie;
26__thread int tls_var1 tls_ie = 0x10;
27
28/* Defined at tst-auditmod21b.so */
29extern __thread int tls_var2;
30extern __thread int tls_var3;
31
32static volatile int out;
33
34static void
35call_libc (void)
36{
37 /* isspace accesses the initial-exec glibc TLS variables, which are
38 setup in glibc initialization. */
39 out = isspace (' ');
40}
41
42unsigned int
43la_version (unsigned int v)
44{
45 tls_var0 = 0x1;
46 if (tls_var1 != 0x10)
47 abort ();
48 tls_var1 = 0x20;
49
50 tls_var2 = 0x2;
51 if (tls_var3 != 0x20)
52 abort ();
53 tls_var3 = 0x40;
54
55 call_libc ();
56
57 return LAV_CURRENT;
58}
59
60unsigned int
61la_objopen (struct link_map* map, Lmid_t lmid, uintptr_t* cookie)
62{
63 call_libc ();
64 *cookie = (uintptr_t) map;
65 return 0;
66}
67
68void
69la_activity (uintptr_t* cookie, unsigned int flag)
70{
71 if (tls_var0 != 0x1 || tls_var1 != 0x20)
72 abort ();
73 call_libc ();
74}
75
76void
77la_preinit (uintptr_t* cookie)
78{
79 call_libc ();
80}
81

source code of glibc/elf/tst-auditmod21a.c