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https://github.com/systemd/systemd-stable.git
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cgroup: rename cg_unified() → cg_unified_controller()
cg_unified() is a bit generic a name, let's make clear that it checks whether a specified controller is in unified mode.
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@ -933,7 +933,7 @@ int cg_set_task_access(
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if (r < 0)
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return r;
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r = cg_unified(controller);
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r = cg_unified_controller(controller);
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if (r < 0)
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return r;
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if (r == 0) {
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@ -1008,7 +1008,7 @@ int cg_pid_get_path(const char *controller, pid_t pid, char **path) {
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} else
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controller = SYSTEMD_CGROUP_CONTROLLER;
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unified = cg_unified(controller);
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unified = cg_unified_controller(controller);
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if (unified < 0)
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return unified;
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if (unified == 0) {
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@ -1083,7 +1083,7 @@ int cg_install_release_agent(const char *controller, const char *agent) {
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assert(agent);
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r = cg_unified(controller);
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r = cg_unified_controller(controller);
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if (r < 0)
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return r;
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if (r > 0) /* doesn't apply to unified hierarchy */
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@ -1134,7 +1134,7 @@ int cg_uninstall_release_agent(const char *controller) {
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_cleanup_free_ char *fs = NULL;
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int r;
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r = cg_unified(controller);
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r = cg_unified_controller(controller);
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if (r < 0)
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return r;
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if (r > 0) /* Doesn't apply to unified hierarchy */
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@ -1190,7 +1190,7 @@ int cg_is_empty_recursive(const char *controller, const char *path) {
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if (controller && (isempty(path) || path_equal(path, "/")))
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return false;
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r = cg_unified(controller);
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r = cg_unified_controller(controller);
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if (r < 0)
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return r;
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if (r > 0) {
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@ -2342,17 +2342,14 @@ int cg_kernel_controllers(Set *controllers) {
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static thread_local CGroupUnified unified_cache = CGROUP_UNIFIED_UNKNOWN;
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/* The hybrid mode was initially implemented in v232 and simply mounted
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* cgroup v2 on /sys/fs/cgroup/systemd. This unfortunately broke other
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* tools (such as docker) which expected the v1 "name=systemd" hierarchy
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* on /sys/fs/cgroup/systemd. From v233 and on, the hybrid mode mountnbs
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* v2 on /sys/fs/cgroup/unified and maintains "name=systemd" hierarchy
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* on /sys/fs/cgroup/systemd for compatibility with other tools.
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/* The hybrid mode was initially implemented in v232 and simply mounted cgroup v2 on /sys/fs/cgroup/systemd. This
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* unfortunately broke other tools (such as docker) which expected the v1 "name=systemd" hierarchy on
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* /sys/fs/cgroup/systemd. From v233 and on, the hybrid mode mountnbs v2 on /sys/fs/cgroup/unified and maintains
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* "name=systemd" hierarchy on /sys/fs/cgroup/systemd for compatibility with other tools.
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*
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* To keep live upgrade working, we detect and support v232 layout. When
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* v232 layout is detected, to keep cgroup v2 process management but
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* disable the compat dual layout, we return %true on
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* cg_unified(SYSTEMD_CGROUP_CONTROLLER) and %false on cg_hybrid_unified().
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* To keep live upgrade working, we detect and support v232 layout. When v232 layout is detected, to keep cgroup v2
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* process management but disable the compat dual layout, we return %true on
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* cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) and %false on cg_hybrid_unified().
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*/
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static thread_local bool unified_systemd_v232;
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@ -2395,7 +2392,7 @@ static int cg_update_unified(void) {
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return 0;
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}
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int cg_unified(const char *controller) {
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int cg_unified_controller(const char *controller) {
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int r;
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r = cg_update_unified();
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@ -2412,7 +2409,7 @@ int cg_unified(const char *controller) {
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}
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int cg_all_unified(void) {
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return cg_unified(NULL);
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return cg_unified_controller(NULL);
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}
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int cg_hybrid_unified(void) {
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@ -242,7 +242,7 @@ bool cg_ns_supported(void);
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int cg_all_unified(void);
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int cg_hybrid_unified(void);
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int cg_unified(const char *controller);
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int cg_unified_controller(const char *controller);
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int cg_unified_flush(void);
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bool cg_is_unified_wanted(void);
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@ -1259,7 +1259,7 @@ int unit_watch_cgroup(Unit *u) {
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return 0;
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/* Only applies to the unified hierarchy */
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r = cg_unified(SYSTEMD_CGROUP_CONTROLLER);
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r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER);
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if (r < 0)
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return log_error_errno(r, "Failed to determine whether the name=systemd hierarchy is unified: %m");
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if (r == 0)
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@ -1684,7 +1684,7 @@ int unit_watch_all_pids(Unit *u) {
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if (!u->cgroup_path)
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return -ENOENT;
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r = cg_unified(SYSTEMD_CGROUP_CONTROLLER);
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r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER);
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if (r < 0)
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return r;
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if (r > 0) /* On unified we can use proper notifications */
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@ -1807,7 +1807,7 @@ int manager_setup_cgroup(Manager *m) {
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if (r > 0)
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log_debug("Unified cgroup hierarchy is located at %s.", path);
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else {
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r = cg_unified(SYSTEMD_CGROUP_CONTROLLER);
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r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER);
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if (r < 0)
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return log_error_errno(r, "Failed to determine whether systemd's own controller is in unified mode: %m");
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if (r > 0)
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@ -1820,7 +1820,7 @@ int manager_setup_cgroup(Manager *m) {
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const char *scope_path;
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/* 3. Install agent */
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if (cg_unified(SYSTEMD_CGROUP_CONTROLLER) > 0) {
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if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) > 0) {
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/* In the unified hierarchy we can get
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* cgroup empty notifications via inotify. */
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@ -776,7 +776,7 @@ static int manager_setup_cgroups_agent(Manager *m) {
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if (!MANAGER_IS_SYSTEM(m))
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return 0;
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r = cg_unified(SYSTEMD_CGROUP_CONTROLLER);
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r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER);
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if (r < 0)
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return log_error_errno(r, "Failed to determine whether unified cgroups hierarchy is used: %m");
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if (r > 0) /* We don't need this anymore on the unified hierarchy */
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@ -475,7 +475,7 @@ static void scope_sigchld_event(Unit *u, pid_t pid, int code, int status) {
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/* If the PID set is empty now, then let's finish this off
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(On unified we use proper notifications) */
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if (cg_unified(SYSTEMD_CGROUP_CONTROLLER) == 0 && set_isempty(u->pids))
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if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) == 0 && set_isempty(u->pids))
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scope_notify_cgroup_empty_event(u);
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}
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@ -2938,7 +2938,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
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/* If the PID set is empty now, then let's finish this off
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(On unified we use proper notifications) */
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if (cg_unified(SYSTEMD_CGROUP_CONTROLLER) == 0 && set_isempty(u->pids))
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if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) == 0 && set_isempty(u->pids))
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service_notify_cgroup_empty_event(u);
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}
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@ -3897,7 +3897,7 @@ int unit_kill_context(
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* there we get proper events. Hence rely on
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* them.*/
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if (cg_unified(SYSTEMD_CGROUP_CONTROLLER) > 0 ||
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if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) > 0 ||
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(detect_container() == 0 && !unit_cgroup_delegate(u)))
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wait_for_exit = true;
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@ -80,7 +80,7 @@ int sync_cgroup(pid_t pid, CGroupUnified unified_requested, uid_t arg_uid_shift)
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const char *fn;
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int r, unified_controller;
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unified_controller = cg_unified(SYSTEMD_CGROUP_CONTROLLER);
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unified_controller = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER);
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if (unified_controller < 0)
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return log_error_errno(unified_controller, "Failed to determine whether the systemd hierarchy is unified: %m");
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if ((unified_controller > 0) == (unified_requested >= CGROUP_UNIFIED_SYSTEMD))
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@ -153,7 +153,7 @@ int create_subcgroup(pid_t pid, CGroupUnified unified_requested) {
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if (unified_requested == CGROUP_UNIFIED_NONE)
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return 0;
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r = cg_unified(SYSTEMD_CGROUP_CONTROLLER);
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r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER);
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if (r < 0)
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return log_error_errno(r, "Failed to determine whether the systemd controller is unified: %m");
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if (r == 0)
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@ -346,7 +346,7 @@ static int detect_unified_cgroup_hierarchy(const char *directory) {
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arg_unified_cgroup_hierarchy = CGROUP_UNIFIED_ALL;
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else
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arg_unified_cgroup_hierarchy = CGROUP_UNIFIED_NONE;
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} else if (cg_unified(SYSTEMD_CGROUP_CONTROLLER) > 0) {
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} else if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) > 0) {
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/* Mixed cgroup hierarchy support was added in 233 */
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r = systemd_installation_has_version(directory, 233);
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if (r < 0)
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