blob: c2ae725a879f94aaa930e6e920057387e87d0f68 (
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
|
/* Disable address space randomization based on inferior personality.
Copyright (C) 2008-2023 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "gdbsupport/common-defs.h"
#include "nat/linux-personality.h"
#include <sys/personality.h>
# if !HAVE_DECL_ADDR_NO_RANDOMIZE
# define ADDR_NO_RANDOMIZE 0x0040000
# endif /* ! HAVE_DECL_ADDR_NO_RANDOMIZE */
/* See comment on nat/linux-personality.h. */
maybe_disable_address_space_randomization::
maybe_disable_address_space_randomization (int disable_randomization)
: m_personality_set (false),
m_personality_orig (0)
{
if (disable_randomization)
{
errno = 0;
m_personality_orig = personality (0xffffffff);
if (errno == 0 && !(m_personality_orig & ADDR_NO_RANDOMIZE))
{
m_personality_set = true;
personality (m_personality_orig | ADDR_NO_RANDOMIZE);
}
if (errno != 0 || (m_personality_set
&& !(personality (0xffffffff) & ADDR_NO_RANDOMIZE)))
warning (_("Error disabling address space randomization: %s"),
safe_strerror (errno));
}
}
maybe_disable_address_space_randomization::
~maybe_disable_address_space_randomization ()
{
if (m_personality_set)
{
errno = 0;
personality (m_personality_orig);
if (errno != 0)
warning (_("Error restoring address space randomization: %s"),
safe_strerror (errno));
}
}
|
