/*-*- 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" /* A bit mask of well known cgroup controllers */ typedef enum CGroupControllerMask { CGROUP_CPU = 1, CGROUP_CPUACCT = 2, CGROUP_BLKIO = 4, CGROUP_MEMORY = 8, CGROUP_DEVICE = 16, _CGROUP_CONTROLLER_MASK_ALL = 31 } CGroupControllerMask; /* * 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_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_migrate_recursive_fallback(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self, bool rem); int cg_split_spec(const char *spec, char **controller, char **path); 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); int cg_delete(const char *controller, const char *path); int cg_create(const char *controller, const char *path); int cg_attach(const char *controller, const char *path, pid_t pid); int cg_attach_fallback(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_attribute(const char *controller, const char *path, const char *attribute, const char *value); int cg_get_attribute(const char *controller, const char *path, const char *attribute, char **ret); 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 cg_install_release_agent(const char *controller, const char *agent); int cg_uninstall_release_agent(const char *controller); int cg_is_empty(const char *controller, const char *path, 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_shift_path(const char *cgroup, const char *cached_root, const char **shifted); int cg_pid_get_path_shifted(pid_t pid, const char *cached_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_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); typedef const char* (*cg_migrate_callback_t)(CGroupControllerMask mask, void *userdata); int cg_create_everywhere(CGroupControllerMask supported, CGroupControllerMask mask, const char *path); int cg_attach_everywhere(CGroupControllerMask supported, const char *path, pid_t pid, cg_migrate_callback_t callback, void *userdata); int cg_attach_many_everywhere(CGroupControllerMask supported, const char *path, Set* pids, cg_migrate_callback_t callback, void *userdata); int cg_migrate_everywhere(CGroupControllerMask supported, const char *from, const char *to, cg_migrate_callback_t callback, void *userdata); int cg_trim_everywhere(CGroupControllerMask supported, const char *path, bool delete_root); CGroupControllerMask cg_mask_supported(void); int cg_kernel_controllers(Set *controllers);