137 lines
5.7 KiB
C
137 lines
5.7 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <sys/types.h>
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#include <stdio.h>
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#include <dirent.h>
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#include "set.h"
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#include "def.h"
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/* A bit mask of well known cgroup controllers */
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typedef enum CGroupControllerMask {
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CGROUP_CPU = 1,
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CGROUP_CPUACCT = 2,
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CGROUP_BLKIO = 4,
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CGROUP_MEMORY = 8,
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CGROUP_DEVICE = 16,
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_CGROUP_CONTROLLER_MASK_ALL = 31
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} CGroupControllerMask;
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/*
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* General rules:
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*
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* We accept named hierarchies in the syntax "foo" and "name=foo".
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*
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* We expect that named hierarchies do not conflict in name with a
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* kernel hierarchy, modulo the "name=" prefix.
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*
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* We always generate "normalized" controller names, i.e. without the
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* "name=" prefix.
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*
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* We require absolute cgroup paths. When returning, we will always
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* generate paths with multiple adjacent / removed.
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*/
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int cg_enumerate_processes(const char *controller, const char *path, FILE **_f);
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int cg_read_pid(FILE *f, pid_t *_pid);
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int cg_enumerate_subgroups(const char *controller, const char *path, DIR **_d);
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int cg_read_subgroup(DIR *d, char **fn);
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int cg_kill(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, Set *s);
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int cg_kill_recursive(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, bool remove, Set *s);
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int cg_migrate(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self);
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int cg_migrate_recursive(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self, bool remove);
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int cg_migrate_recursive_fallback(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self, bool rem);
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int cg_split_spec(const char *spec, char **controller, char **path);
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int cg_mangle_path(const char *path, char **result);
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int cg_get_path(const char *controller, const char *path, const char *suffix, char **fs);
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int cg_get_path_and_check(const char *controller, const char *path, const char *suffix, char **fs);
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int cg_pid_get_path(const char *controller, pid_t pid, char **path);
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int cg_trim(const char *controller, const char *path, bool delete_root);
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int cg_rmdir(const char *controller, const char *path);
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int cg_delete(const char *controller, const char *path);
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int cg_create(const char *controller, const char *path);
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int cg_attach(const char *controller, const char *path, pid_t pid);
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int cg_attach_fallback(const char *controller, const char *path, pid_t pid);
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int cg_create_and_attach(const char *controller, const char *path, pid_t pid);
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int cg_set_attribute(const char *controller, const char *path, const char *attribute, const char *value);
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int cg_set_group_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid);
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int cg_set_task_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid);
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int cg_install_release_agent(const char *controller, const char *agent);
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int cg_uninstall_release_agent(const char *controller);
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int cg_is_empty(const char *controller, const char *path, bool ignore_self);
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int cg_is_empty_recursive(const char *controller, const char *path, bool ignore_self);
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int cg_get_root_path(char **path);
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int cg_path_get_session(const char *path, char **session);
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int cg_path_get_owner_uid(const char *path, uid_t *uid);
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int cg_path_get_unit(const char *path, char **unit);
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int cg_path_get_user_unit(const char *path, char **unit);
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int cg_path_get_machine_name(const char *path, char **machine);
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int cg_path_get_slice(const char *path, char **slice);
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int cg_shift_path(const char *cgroup, const char *cached_root, const char **shifted);
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int cg_pid_get_path_shifted(pid_t pid, const char *cached_root, char **cgroup);
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int cg_pid_get_session(pid_t pid, char **session);
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int cg_pid_get_owner_uid(pid_t pid, uid_t *uid);
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int cg_pid_get_unit(pid_t pid, char **unit);
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int cg_pid_get_user_unit(pid_t pid, char **unit);
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int cg_pid_get_machine_name(pid_t pid, char **machine);
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int cg_pid_get_slice(pid_t pid, char **slice);
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int cg_path_decode_unit(const char *cgroup, char **unit);
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char *cg_escape(const char *p);
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char *cg_unescape(const char *p) _pure_;
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bool cg_controller_is_valid(const char *p, bool allow_named);
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int cg_slice_to_path(const char *unit, char **ret);
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typedef const char* (*cg_migrate_callback_t)(CGroupControllerMask mask, void *userdata);
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int cg_create_everywhere(CGroupControllerMask supported, CGroupControllerMask mask, const char *path);
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int cg_attach_everywhere(CGroupControllerMask supported, const char *path, pid_t pid, cg_migrate_callback_t callback, void *userdata);
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int cg_attach_many_everywhere(CGroupControllerMask supported, const char *path, Set* pids, cg_migrate_callback_t callback, void *userdata);
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int cg_migrate_everywhere(CGroupControllerMask supported, const char *from, const char *to, cg_migrate_callback_t callback, void *userdata);
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int cg_trim_everywhere(CGroupControllerMask supported, const char *path, bool delete_root);
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CGroupControllerMask cg_mask_supported(void);
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int cg_kernel_controllers(Set *controllers);
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