4 This file is part of systemd.
6 Copyright 2013 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
25 #include "time-util.h"
26 #include "cgroup-util.h"
28 typedef struct CGroupContext CGroupContext
;
29 typedef struct CGroupDeviceAllow CGroupDeviceAllow
;
30 typedef struct CGroupIODeviceWeight CGroupIODeviceWeight
;
31 typedef struct CGroupIODeviceLimit CGroupIODeviceLimit
;
32 typedef struct CGroupBlockIODeviceWeight CGroupBlockIODeviceWeight
;
33 typedef struct CGroupBlockIODeviceBandwidth CGroupBlockIODeviceBandwidth
;
35 typedef enum CGroupDevicePolicy
{
37 /* When devices listed, will allow those, plus built-in ones,
38 if none are listed will allow everything. */
41 /* Everything forbidden, except built-in ones and listed ones. */
44 /* Everythings forbidden, except for the listed devices */
47 _CGROUP_DEVICE_POLICY_MAX
,
48 _CGROUP_DEVICE_POLICY_INVALID
= -1
51 struct CGroupDeviceAllow
{
52 LIST_FIELDS(CGroupDeviceAllow
, device_allow
);
59 struct CGroupIODeviceWeight
{
60 LIST_FIELDS(CGroupIODeviceWeight
, device_weights
);
65 struct CGroupIODeviceLimit
{
66 LIST_FIELDS(CGroupIODeviceLimit
, device_limits
);
68 uint64_t limits
[_CGROUP_IO_LIMIT_TYPE_MAX
];
71 struct CGroupBlockIODeviceWeight
{
72 LIST_FIELDS(CGroupBlockIODeviceWeight
, device_weights
);
77 struct CGroupBlockIODeviceBandwidth
{
78 LIST_FIELDS(CGroupBlockIODeviceBandwidth
, device_bandwidths
);
84 struct CGroupContext
{
87 bool blockio_accounting
;
88 bool memory_accounting
;
89 bool tasks_accounting
;
91 /* For unified hierarchy */
93 uint64_t startup_cpu_weight
;
94 usec_t cpu_quota_per_sec_usec
;
97 uint64_t startup_io_weight
;
98 LIST_HEAD(CGroupIODeviceWeight
, io_device_weights
);
99 LIST_HEAD(CGroupIODeviceLimit
, io_device_limits
);
102 uint64_t memory_high
;
104 uint64_t memory_swap_max
;
106 /* For legacy hierarchies */
108 uint64_t startup_cpu_shares
;
110 uint64_t blockio_weight
;
111 uint64_t startup_blockio_weight
;
112 LIST_HEAD(CGroupBlockIODeviceWeight
, blockio_device_weights
);
113 LIST_HEAD(CGroupBlockIODeviceBandwidth
, blockio_device_bandwidths
);
115 uint64_t memory_limit
;
117 CGroupDevicePolicy device_policy
;
118 LIST_HEAD(CGroupDeviceAllow
, device_allow
);
128 void cgroup_context_init(CGroupContext
*c
);
129 void cgroup_context_done(CGroupContext
*c
);
130 void cgroup_context_dump(CGroupContext
*c
, FILE* f
, const char *prefix
);
132 CGroupMask
cgroup_context_get_mask(CGroupContext
*c
);
134 void cgroup_context_free_device_allow(CGroupContext
*c
, CGroupDeviceAllow
*a
);
135 void cgroup_context_free_io_device_weight(CGroupContext
*c
, CGroupIODeviceWeight
*w
);
136 void cgroup_context_free_io_device_limit(CGroupContext
*c
, CGroupIODeviceLimit
*l
);
137 void cgroup_context_free_blockio_device_weight(CGroupContext
*c
, CGroupBlockIODeviceWeight
*w
);
138 void cgroup_context_free_blockio_device_bandwidth(CGroupContext
*c
, CGroupBlockIODeviceBandwidth
*b
);
140 CGroupMask
unit_get_own_mask(Unit
*u
);
141 CGroupMask
unit_get_siblings_mask(Unit
*u
);
142 CGroupMask
unit_get_members_mask(Unit
*u
);
143 CGroupMask
unit_get_subtree_mask(Unit
*u
);
145 CGroupMask
unit_get_target_mask(Unit
*u
);
146 CGroupMask
unit_get_enable_mask(Unit
*u
);
148 void unit_update_cgroup_members_masks(Unit
*u
);
150 char *unit_default_cgroup_path(Unit
*u
);
151 int unit_set_cgroup_path(Unit
*u
, const char *path
);
153 int unit_realize_cgroup(Unit
*u
);
154 void unit_release_cgroup(Unit
*u
);
155 void unit_prune_cgroup(Unit
*u
);
156 int unit_watch_cgroup(Unit
*u
);
158 int unit_attach_pids_to_cgroup(Unit
*u
);
160 int manager_setup_cgroup(Manager
*m
);
161 void manager_shutdown_cgroup(Manager
*m
, bool delete);
163 unsigned manager_dispatch_cgroup_queue(Manager
*m
);
165 Unit
*manager_get_unit_by_cgroup(Manager
*m
, const char *cgroup
);
166 Unit
*manager_get_unit_by_pid_cgroup(Manager
*m
, pid_t pid
);
167 Unit
* manager_get_unit_by_pid(Manager
*m
, pid_t pid
);
169 int unit_search_main_pid(Unit
*u
, pid_t
*ret
);
170 int unit_watch_all_pids(Unit
*u
);
172 int unit_get_memory_current(Unit
*u
, uint64_t *ret
);
173 int unit_get_tasks_current(Unit
*u
, uint64_t *ret
);
174 int unit_get_cpu_usage(Unit
*u
, nsec_t
*ret
);
175 int unit_reset_cpu_usage(Unit
*u
);
177 bool unit_cgroup_delegate(Unit
*u
);
179 int unit_notify_cgroup_empty(Unit
*u
);
180 int manager_notify_cgroup_empty(Manager
*m
, const char *group
);
182 void unit_invalidate_cgroup(Unit
*u
, CGroupMask m
);
184 void manager_invalidate_startup_units(Manager
*m
);
186 const char* cgroup_device_policy_to_string(CGroupDevicePolicy i
) _const_
;
187 CGroupDevicePolicy
cgroup_device_policy_from_string(const char *s
) _pure_
;