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
|
/*
* Copyright (c) 2006 Darren Tucker. All rights reserved.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "includes.h"
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "log.h"
#include "misc.h"
#include "platform.h"
#include "openbsd-compat/openbsd-compat.h"
void
platform_pre_listen(void)
{
#ifdef LINUX_OOM_ADJUST
/* Adjust out-of-memory killer so listening process is not killed */
oom_adjust_setup();
#endif
#ifdef LINUX_MEMLOCK_ONFAULT
/*
* Protect ourselves against kcompactd so that we are able to process
* new connections while it is active and migrating pages.
*/
memlock_onfault_setup();
#endif
}
void
platform_post_listen(void)
{
#ifdef SYSTEMD_NOTIFY
ssh_systemd_notify_ready();
#endif
}
void
platform_pre_fork(void)
{
#ifdef USE_SOLARIS_PROCESS_CONTRACTS
solaris_contract_pre_fork();
#endif
}
void
platform_pre_restart(void)
{
#ifdef SYSTEMD_NOTIFY
ssh_systemd_notify_reload();
#endif
#ifdef LINUX_OOM_ADJUST
oom_adjust_restore();
#endif
}
void
platform_post_fork_parent(pid_t child_pid)
{
#ifdef USE_SOLARIS_PROCESS_CONTRACTS
solaris_contract_post_fork_parent(child_pid);
#endif
}
void
platform_post_fork_child(void)
{
#ifdef USE_SOLARIS_PROCESS_CONTRACTS
solaris_contract_post_fork_child();
#endif
#ifdef LINUX_OOM_ADJUST
oom_adjust_restore();
#endif
}
void platform_pre_session_start(void)
{
#ifdef LINUX_MEMLOCK_ONFAULT
/*
* Memlock flags are dropped on fork, lock the memory again so that the
* child connection is also protected against kcompactd.
*/
memlock_onfault_setup();
#endif
}
|
