summaryrefslogtreecommitdiff
path: root/src/shared/cgroup-util.h
blob: 2d00bb3fff11ab943f89fc4d9261e68bab04a9d5 (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
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
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/

#pragma once

/***
  This file is part of systemd.

  Copyright 2010 Lennart Poettering

  systemd 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.

  systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#include <sys/types.h>
#include <stdio.h>
#include <dirent.h>

#include "set.h"
#include "def.h"

/*
 * General rules:
 *
 * We accept named hierarchies in the syntax "foo" and "name=foo".
 *
 * We expect that named hierarchies do not conflict in name with a
 * kernel hierarchy, modulo the "name=" prefix.
 *
 * We always generate "normalized" controller names, i.e. without the
 * "name=" prefix.
 *
 * We require absolute cgroup paths. When returning, we will always
 * generate paths with multiple adjacent / removed.
 */

int cg_enumerate_processes(const char *controller, const char *path, FILE **_f);
int cg_read_pid(FILE *f, pid_t *_pid);

int cg_enumerate_subgroups(const char *controller, const char *path, DIR **_d);
int cg_read_subgroup(DIR *d, char **fn);

int cg_kill(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, Set *s);
int cg_kill_recursive(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, bool remove, Set *s);
int cg_kill_recursive_and_wait(const char *controller, const char *path, bool remove);

int cg_migrate(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self);
int cg_migrate_recursive(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self, bool remove);

int cg_split_spec(const char *spec, char **controller, char **path);
int cg_join_spec(const char *controller, const char *path, char **spec);
int cg_mangle_path(const char *path, char **result);

int cg_get_path(const char *controller, const char *path, const char *suffix, char **fs);
int cg_get_path_and_check(const char *controller, const char *path, const char *suffix, char **fs);

int cg_pid_get_path(const char *controller, pid_t pid, char **path);

int cg_trim(const char *controller, const char *path, bool delete_root);

int cg_rmdir(const char *controller, const char *path, bool honour_sticky);
int cg_delete(const char *controller, const char *path);

int cg_create(const char *controller, const char *path, const char *suffix);
int cg_attach(const char *controller, const char *path, pid_t pid);
int cg_create_and_attach(const char *controller, const char *path, pid_t pid);

int cg_set_group_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid);
int cg_set_task_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid, int sticky);

int cg_install_release_agent(const char *controller, const char *agent);

int cg_is_empty(const char *controller, const char *path, bool ignore_self);
int cg_is_empty_by_spec(const char *spec, bool ignore_self);
int cg_is_empty_recursive(const char *controller, const char *path, bool ignore_self);

int cg_get_root_path(char **path);

int cg_path_get_session(const char *path, char **session);
int cg_path_get_owner_uid(const char *path, uid_t *uid);
int cg_path_get_unit(const char *path, char **unit);
int cg_path_get_user_unit(const char *path, char **unit);
int cg_path_get_machine_name(const char *path, char **machine);
int cg_path_get_slice(const char *path, char **slice);

int cg_pid_get_path_shifted(pid_t pid, char **root, char **cgroup);

int cg_pid_get_session(pid_t pid, char **session);
int cg_pid_get_owner_uid(pid_t pid, uid_t *uid);
int cg_pid_get_unit(pid_t pid, char **unit);
int cg_pid_get_user_unit(pid_t pid, char **unit);
int cg_pid_get_machine_name(pid_t pid, char **machine);
int cg_pid_get_slice(pid_t pid, char **slice);

int cg_path_decode_unit(const char *cgroup, char **unit);

char **cg_shorten_controllers(char **controllers);

int cg_controller_from_attr(const char *attr, char **controller);

char *cg_escape(const char *p);
char *cg_unescape(const char *p) _pure_;

bool cg_controller_is_valid(const char *p, bool allow_named);

int cg_slice_to_path(const char *unit, char **ret);