1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
/* Check GLIBC_TUNABLES parsing for enable_secure.
Copyright (C) 2024-2025 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
<https://www.gnu.org/licenses/>. */
#include <array_length.h>
/* The test uses the tunable_env_alias_list size, which is only exported for
ld.so. This will result in a copy of tunable_list and
tunable_env_alias_list, which is ununsed by the test itself. */
#define TUNABLES_INTERNAL 1
#include <dl-tunables.h>
#include <getopt.h>
#include <intprops.h>
#include <stdint.h>
#include <stdlib.h>
#include <support/capture_subprocess.h>
#include <support/check.h>
#include <sys/auxv.h>
#include <unistd.h>
static int restart;
#define CMDLINE_OPTIONS \
{ "restart", no_argument, &restart, 1 },
static const struct test_t
{
const char *env;
const char *extraenv;
bool check_multiple;
int32_t expected_malloc_check;
int32_t expected_enable_secure;
} tests[] =
{
/* Expected tunable format. */
/* Tunables should be ignored if enable_secure is set. */
{
"GLIBC_TUNABLES=glibc.malloc.check=2:glibc.rtld.enable_secure=1",
NULL,
false,
0,
1,
},
/* Tunables should be ignored if enable_secure is set. */
{
"GLIBC_TUNABLES=glibc.rtld.enable_secure=1:glibc.malloc.check=2",
NULL,
false,
0,
1,
},
/* Tunables should be set if enable_secure is unset. */
{
"GLIBC_TUNABLES=glibc.rtld.enable_secure=0:glibc.malloc.check=2",
NULL,
false,
2,
0,
},
/* Tunables should be ignored if enable_secure is set. */
{
"GLIBC_TUNABLES=glibc.malloc.check=2:glibc.rtld.enable_secure=1",
"MALLOC_CHECK_=2",
false,
0,
1,
},
/* Same as before, but with enviroment alias prior GLIBC_TUNABLES. */
{
"MALLOC_CHECK_=2",
"GLIBC_TUNABLES=glibc.malloc.check=2:glibc.rtld.enable_secure=1",
false,
0,
1,
},
/* Tunables should be ignored if enable_secure is set. */
{
"GLIBC_TUNABLES=glibc.rtld.enable_secure=1:glibc.malloc.check=2",
"MALLOC_CHECK_=2",
false,
0,
1,
},
{
"MALLOC_CHECK_=2",
"GLIBC_TUNABLES=glibc.rtld.enable_secure=1:glibc.malloc.check=2",
false,
0,
1,
},
/* Tunables should be set if enable_secure is unset. */
{
"GLIBC_TUNABLES=glibc.rtld.enable_secure=0:glibc.malloc.check=2",
/* Tunable have precedence over the environment variable. */
"MALLOC_CHECK_=1",
false,
2,
0,
},
{
"MALLOC_CHECK_=1",
"GLIBC_TUNABLES=glibc.rtld.enable_secure=0:glibc.malloc.check=2",
/* Tunable have precedence over the environment variable. */
false,
2,
0,
},
/* Tunables should be set if enable_secure is unset. */
{
"GLIBC_TUNABLES=glibc.rtld.enable_secure=0",
/* Tunable have precedence over the environment variable. */
"MALLOC_CHECK_=1",
false,
1,
0,
},
/* Tunables should be set if enable_secure is unset. */
{
"GLIBC_TUNABLES=glibc.rtld.enable_secure=0",
/* Tunable have precedence over the environment variable. */
"MALLOC_CHECK_=1",
false,
1,
0,
},
/* Check with tunables environment variable alias set multiple times. */
{
"GLIBC_TUNABLES=glibc.rtld.enable_secure=1:glibc.malloc.check=2",
"MALLOC_CHECK_=2",
true,
0,
1,
},
/* Tunables should be set if enable_secure is unset. */
{
"GLIBC_TUNABLES=glibc.rtld.enable_secure=0",
/* Tunable have precedence over the environment variable. */
"MALLOC_CHECK_=1",
true,
1,
0,
},
};
static int
handle_restart (int i)
{
if (tests[i].expected_enable_secure == 1)
TEST_COMPARE (1, __libc_enable_secure);
else
TEST_COMPARE (tests[i].expected_enable_secure,
TUNABLE_GET_FULL (glibc, rtld, enable_secure, int32_t,
NULL));
TEST_COMPARE (tests[i].expected_malloc_check,
TUNABLE_GET_FULL (glibc, malloc, check, int32_t, NULL));
return 0;
}
static int
do_test (int argc, char *argv[])
{
/* We must have either:
- One or four parameters left if called initially:
+ path to ld.so optional
+ "--library-path" optional
+ the library path optional
+ the application name
+ the test to check */
TEST_VERIFY_EXIT (argc == 2 || argc == 5);
if (restart)
return handle_restart (atoi (argv[1]));
char nteststr[INT_BUFSIZE_BOUND (int)];
char *spargv[10];
{
int i = 0;
for (; i < argc - 1; i++)
spargv[i] = argv[i + 1];
spargv[i++] = (char *) "--direct";
spargv[i++] = (char *) "--restart";
spargv[i++] = nteststr;
spargv[i] = NULL;
}
enum { tunable_num_env_alias = array_length (tunable_env_alias_list) };
for (int i = 0; i < array_length (tests); i++)
{
snprintf (nteststr, sizeof nteststr, "%d", i);
printf ("[%d] Spawned test for %s\n", i, tests[i].env);
setenv ("GLIBC_TUNABLES", tests[i].env, 1);
char *envp[2 + tunable_num_env_alias + 1] =
{
(char *) tests[i].env,
(char *) tests[i].extraenv,
NULL,
};
if (tests[i].check_multiple)
{
int j;
for (j=0; j < tunable_num_env_alias; j++)
envp[j + 2] = (char *) tests[i].extraenv;
envp[j + 2] = NULL;
}
struct support_capture_subprocess result
= support_capture_subprogram (spargv[0], spargv, envp);
support_capture_subprocess_check (&result, "tst-tunables-enable_secure",
0, sc_allow_stderr);
support_capture_subprocess_free (&result);
}
return 0;
}
#define TEST_FUNCTION_ARGV do_test
#include <support/test-driver.c>
|
