blob: d7c4f0d5742cd5263661289cbdcae4061080903c (
plain)
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
|
/* Copyright (C) 2017-2018 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/>. */
/* Verify that tunables correctly filter out unsafe tunables like
glibc.malloc.check and glibc.malloc.mmap_threshold but also retain
glibc.malloc.mmap_threshold in an unprivileged child. */
/* This is compiled as part of the testsuite but needs to see
HAVE_TUNABLES. */
#define _LIBC 1
#include "config.h"
#undef _LIBC
#define test_parent test_parent_tunables
#define test_child test_child_tunables
static int test_child_tunables (void);
static int test_parent_tunables (void);
#include "tst-env-setuid.c"
#define CHILD_VALSTRING_VALUE "glibc.malloc.mmap_threshold=4096"
#define PARENT_VALSTRING_VALUE \
"glibc.malloc.check=2:glibc.malloc.mmap_threshold=4096"
static int
test_child_tunables (void)
{
const char *val = getenv ("GLIBC_TUNABLES");
#if HAVE_TUNABLES
if (val != NULL && strcmp (val, CHILD_VALSTRING_VALUE) == 0)
return 0;
if (val != NULL)
printf ("Unexpected GLIBC_TUNABLES VALUE %s\n", val);
return 1;
#else
if (val != NULL)
{
printf ("GLIBC_TUNABLES not cleared\n");
return 1;
}
return 0;
#endif
}
static int
test_parent_tunables (void)
{
const char *val = getenv ("GLIBC_TUNABLES");
if (val != NULL && strcmp (val, PARENT_VALSTRING_VALUE) == 0)
return 0;
if (val != NULL)
printf ("Unexpected GLIBC_TUNABLES VALUE %s\n", val);
return 1;
}
|
