core: rework how we match mount units against each other

[elogind.git] / src / core / manager.h

diff --git a/src/core/manager.h b/src/core/manager.h
index 5d777e6ed39a25703eaaf41b35b6cb1533f978b0..a3049b5e5b665fe7937ca4cf2a3274cdb8670732 100644 (file)
--- a/src/core/manager.h
+++ b/src/core/manager.h
@@ -27,6 +27,7 @@
 #include <dbus/dbus.h>
 
 #include "fdset.h"
+#include "cgroup-util.h"
 
 /* Enforce upper limit how many names we allow */
 #define MANAGER_MAX_NAMES 131072 /* 128K */
@@ -62,7 +63,8 @@ enum WatchType {
         WATCH_DBUS_WATCH,
         WATCH_DBUS_TIMEOUT,
         WATCH_TIME_CHANGE,
-        WATCH_JOBS_IN_PROGRESS
+        WATCH_JOBS_IN_PROGRESS,
+        WATCH_IDLE_PIPE,
 };
 
 struct Watch {
@@ -86,6 +88,7 @@ struct Watch {
 #include "dbus.h"
 #include "path-lookup.h"
 #include "execute.h"
+#include "unit-name.h"
 
 struct Manager {
         /* Note that the set of units we know of is allowed to be
@@ -100,9 +103,6 @@ struct Manager {
          * type we maintain a per type linked list */
         LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]);
 
-        /* To optimize iteration of units that have requires_mounts_for set */
-        LIST_HEAD(Unit, has_requires_mounts_for);
-
         /* Units that need to be loaded */
         LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */
 
@@ -122,6 +122,9 @@ struct Manager {
         /* Units to check when doing GC */
         LIST_HEAD(Unit, gc_queue);
 
+        /* Units that should be realized */
+        LIST_HEAD(Unit, cgroup_queue);
+
         Hashmap *watch_pids;  /* pid => Unit object n:1 */
 
         char *notify_socket;
@@ -130,6 +133,7 @@ struct Manager {
         Watch signal_watch;
         Watch time_change_watch;
         Watch jobs_in_progress_watch;
+        Watch idle_pipe_watch;
 
         int epoll_fd;
 
@@ -139,7 +143,6 @@ struct Manager {
         Set *unit_path_cache;
 
         char **environment;
-        char **default_controllers;
 
         usec_t runtime_watchdog;
         usec_t shutdown_watchdog;
@@ -152,6 +155,8 @@ struct Manager {
         dual_timestamp finish_timestamp;
         dual_timestamp generators_start_timestamp;
         dual_timestamp generators_finish_timestamp;
+        dual_timestamp unitsload_start_timestamp;
+        dual_timestamp unitsload_finish_timestamp;
 
         char *generator_unit_path;
         char *generator_unit_path_early;
@@ -189,6 +194,8 @@ struct Manager {
         int32_t conn_data_slot;
         int32_t subscribed_data_slot;
 
+        bool send_reloading_done;
+
         uint32_t current_job_id;
         uint32_t default_unit_job_id;
 
@@ -196,10 +203,10 @@ struct Manager {
         int dev_autofs_fd;
 
         /* Data specific to the cgroup subsystem */
-        Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
-        char *cgroup_hierarchy;
+        Hashmap *cgroup_unit;
+        CGroupControllerMask cgroup_supported;
+        char *cgroup_root;
 
-        usec_t gc_queue_timestamp;
         int gc_marker;
         unsigned n_in_gc_queue;
 
@@ -219,6 +226,7 @@ struct Manager {
 
         bool show_status;
         bool confirm_spawn;
+        bool no_console_output;
 
         ExecOutput default_std_output, default_std_error;
 
@@ -236,13 +244,18 @@ struct Manager {
         unsigned jobs_in_progress_iteration;
 
         /* Type=idle pipes */
-        int idle_pipe[2];
+        int idle_pipe[4];
 
         char *switch_root;
         char *switch_root_init;
+
+        /* This maps all possible path prefixes to the units needing
+         * them. It's a hashmap with a path string as key and a Set as
+         * value where Unit objects are contained. */
+        Hashmap *units_requiring_mounts_for;
 };
 
-int manager_new(SystemdRunningAs running_as, Manager **m);
+int manager_new(SystemdRunningAs running_as, bool reexecuting, Manager **m);
 void manager_free(Manager *m);
 
 int manager_enumerate(Manager *m);
@@ -252,6 +265,8 @@ int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
 Job *manager_get_job(Manager *m, uint32_t id);
 Unit *manager_get_unit(Manager *m, const char *name);
 
+int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found);
+
 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
 
 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret);
@@ -270,7 +285,7 @@ unsigned manager_dispatch_load_queue(Manager *m);
 unsigned manager_dispatch_run_queue(Manager *m);
 unsigned manager_dispatch_dbus_queue(Manager *m);
 
-int manager_set_default_controllers(Manager *m, char **controllers);
+int manager_environment_add(Manager *m, char **environment);
 int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit);
 
 int manager_loop(Manager *m);
@@ -305,4 +320,6 @@ void manager_recheck_journal(Manager *m);
 void manager_set_show_status(Manager *m, bool b);
 void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) _printf_attr_(4,5);
 
+Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path);
+
 void watch_init(Watch *w);