X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Funit.h;h=fbcaabe167ed346276c7523e311d59b6bec05952;hp=297b35d8f502bb01766c545416889aee9d892531;hb=4ad490007b70e6ac18d3cb04fa2ed92eba1451fa;hpb=71645acac27da55d510f2e4d61cc61b4e5b93035 diff --git a/src/core/unit.h b/src/core/unit.h index 297b35d8f..fbcaabe16 100644 --- a/src/core/unit.h +++ b/src/core/unit.h @@ -37,6 +37,7 @@ typedef struct UnitStatusMessageFormats UnitStatusMessageFormats; #include "list.h" #include "socket-util.h" #include "execute.h" +#include "cgroup.h" #include "condition.h" #include "install.h" #include "unit-name.h" @@ -114,8 +115,15 @@ enum UnitDependency { #include "manager.h" #include "job.h" -#include "cgroup.h" -#include "cgroup-attr.h" + +struct UnitRef { + /* Keeps tracks of references to a unit. This is useful so + * that we can merge two units if necessary and correct all + * references to them */ + + Unit* unit; + LIST_FIELDS(UnitRef, refs); +}; struct Unit { Manager *manager; @@ -137,8 +145,10 @@ struct Unit { char *fragment_path; /* if loaded from a config file this is the primary path to it */ char *source_path; /* if converted, the source file */ + char **dropin_paths; usec_t fragment_mtime; usec_t source_mtime; + usec_t dropin_mtime; /* If there is something to do with this unit, then this is the installed job for it */ Job *job; @@ -162,8 +172,11 @@ struct Unit { dual_timestamp inactive_enter_timestamp; /* Counterparts in the cgroup filesystem */ - CGroupBonding *cgroup_bondings; - CGroupAttribute *cgroup_attributes; + char *cgroup_path; + bool cgroup_realized; + CGroupControllerMask cgroup_mask; + + UnitRef slice; /* Per type list */ LIST_FIELDS(Unit, units_by_type); @@ -183,6 +196,9 @@ struct Unit { /* GC queue */ LIST_FIELDS(Unit, gc_queue); + /* CGroup realize members queue */ + LIST_FIELDS(Unit, cgroup_queue); + /* Used during GC sweeps */ unsigned gc_marker; @@ -229,6 +245,7 @@ struct Unit { bool in_dbus_queue:1; bool in_cleanup_queue:1; bool in_gc_queue:1; + bool in_cgroup_queue:1; bool sent_dbus_new_signal:1; @@ -237,15 +254,6 @@ struct Unit { bool in_audit:1; }; -struct UnitRef { - /* Keeps tracks of references to a unit. This is useful so - * that we can merge two units if necessary and correct all - * references to them */ - - Unit* unit; - LIST_FIELDS(UnitRef, refs); -}; - struct UnitStatusMessageFormats { const char *starting_stopping[2]; const char *finished_start_job[_JOB_RESULT_MAX]; @@ -262,6 +270,7 @@ struct UnitStatusMessageFormats { #include "snapshot.h" #include "swap.h" #include "path.h" +#include "slice.h" struct UnitVTable { /* How much memory does an object of this unit type need */ @@ -271,8 +280,12 @@ struct UnitVTable { * ExecContext is found, if the unit type has that */ size_t exec_context_offset; - /* The name of the section with the exec settings of ExecContext */ - const char *exec_section; + /* If greater than 0, the offset into the object where + * CGroupContext is found, if the unit type has that */ + size_t cgroup_context_offset; + + /* The name of the configuration file section with the private settings of this unit*/ + const char *private_section; /* Config file sections this unit type understands, separated * by NUL chars */ @@ -344,12 +357,12 @@ struct UnitVTable { /* Called whenever any of the cgroups this unit watches for * ran empty */ - void (*cgroup_notify_empty)(Unit *u); + void (*notify_cgroup_empty)(Unit *u); /* Called whenever a process of this unit sends us a message */ void (*notify_message)(Unit *u, pid_t pid, char **tags); - /* Called whenever a name thus Unit registered for comes or + /* Called whenever a name this Unit registered for comes or * goes away. */ void (*bus_name_owner_change)(Unit *u, const char *name, const char *old_owner, const char *new_owner); @@ -365,6 +378,10 @@ struct UnitVTable { /* Return the set of units that are following each other */ int (*following_set)(Unit *u, Set **s); + /* Invoked each time a unit this unit is triggering changes + * state or gains/loses a job */ + void (*trigger_notify)(Unit *u, Unit *trigger); + /* Called whenever CLOCK_REALTIME made a jump */ void (*time_change)(Unit *u); @@ -414,6 +431,8 @@ extern const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX]; /* For casting the various unit types into a unit */ #define UNIT(u) (&(u)->meta) +#define UNIT_TRIGGER(u) ((Unit*) set_first((u)->dependencies[UNIT_TRIGGERS])) + DEFINE_CAST(SOCKET, Socket); DEFINE_CAST(TIMER, Timer); DEFINE_CAST(SERVICE, Service); @@ -424,6 +443,7 @@ DEFINE_CAST(AUTOMOUNT, Automount); DEFINE_CAST(SNAPSHOT, Snapshot); DEFINE_CAST(SWAP, Swap); DEFINE_CAST(PATH, Path); +DEFINE_CAST(SLICE, Slice); Unit *unit_new(Manager *m, size_t size); void unit_free(Unit *u); @@ -441,12 +461,6 @@ int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDep int unit_add_exec_dependencies(Unit *u, ExecContext *c); -int unit_add_cgroup(Unit *u, CGroupBonding *b); -int unit_add_cgroup_from_text(Unit *u, const char *name, bool overwrite, CGroupBonding **ret); -int unit_add_default_cgroups(Unit *u); -CGroupBonding* unit_get_default_cgroup(Unit *u); -int unit_add_cgroup_attribute(Unit *u, const char *controller, const char *name, const char *value, CGroupAttributeMapCallback map_callback, CGroupAttribute **ret); - int unit_choose_id(Unit *u, const char *name); int unit_set_description(Unit *u, const char *description); @@ -460,13 +474,15 @@ void unit_add_to_gc_queue(Unit *u); int unit_merge(Unit *u, Unit *other); int unit_merge_by_name(Unit *u, const char *other); -Unit *unit_follow_merge(Unit *u); +Unit *unit_follow_merge(Unit *u) _pure_; int unit_load_fragment_and_dropin(Unit *u); int unit_load_fragment_and_dropin_optional(Unit *u); int unit_load(Unit *unit); -const char *unit_description(Unit *u); +int unit_add_default_slice(Unit *u); + +const char *unit_description(Unit *u) _pure_; bool unit_has_name(Unit *u, const char *name); @@ -476,15 +492,16 @@ const char* unit_sub_state_to_string(Unit *u); void unit_dump(Unit *u, FILE *f, const char *prefix); -bool unit_can_reload(Unit *u); -bool unit_can_start(Unit *u); -bool unit_can_isolate(Unit *u); +bool unit_can_reload(Unit *u) _pure_; +bool unit_can_start(Unit *u) _pure_; +bool unit_can_isolate(Unit *u) _pure_; int unit_start(Unit *u); int unit_stop(Unit *u); int unit_reload(Unit *u); int unit_kill(Unit *u, KillWho w, int signo, DBusError *error); +int unit_kill_common(Unit *u, KillWho who, int signo, pid_t main_pid, pid_t control_pid, DBusError *error); void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success); @@ -509,7 +526,7 @@ char *unit_dbus_path(Unit *u); int unit_load_related_unit(Unit *u, const char *type, Unit **_found); int unit_get_related_unit(Unit *u, const char *type, Unit **_found); -bool unit_can_serialize(Unit *u); +bool unit_can_serialize(Unit *u) _pure_; int unit_serialize(Unit *u, FILE *f, FDSet *fds, bool serialize_jobs); void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *value, ...) _printf_attr_(4,5); void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value); @@ -519,7 +536,7 @@ int unit_add_node_link(Unit *u, const char *what, bool wants); int unit_coldplug(Unit *u); -void unit_status_printf(Unit *u, const char *status, const char *format, ...); +void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) _printf_attr_(3, 0); bool unit_need_daemon_reload(Unit *u); @@ -527,8 +544,11 @@ void unit_reset_failed(Unit *u); Unit *unit_following(Unit *u); -bool unit_pending_inactive(Unit *u); -bool unit_pending_active(Unit *u); +const char *unit_slice_name(Unit *u); + +bool unit_stop_pending(Unit *u) _pure_; +bool unit_inactive_or_pending(Unit *u) _pure_; +bool unit_active_or_pending(Unit *u); int unit_add_default_target_dependency(Unit *u, Unit *target); @@ -536,7 +556,8 @@ char *unit_default_cgroup_path(Unit *u); int unit_following_set(Unit *u, Set **s); -void unit_trigger_on_failure(Unit *u); +void unit_start_on_failure(Unit *u); +void unit_trigger_notify(Unit *u); bool unit_condition_test(Unit *u); @@ -546,22 +567,28 @@ Unit* unit_ref_set(UnitRef *ref, Unit *u); void unit_ref_unset(UnitRef *ref); #define UNIT_DEREF(ref) ((ref).unit) +#define UNIT_ISSET(ref) (!!(ref).unit) int unit_add_one_mount_link(Unit *u, Mount *m); int unit_add_mount_links(Unit *u); int unit_exec_context_defaults(Unit *u, ExecContext *c); -ExecContext *unit_get_exec_context(Unit *u); +ExecContext *unit_get_exec_context(Unit *u) _pure_; +CGroupContext *unit_get_cgroup_context(Unit *u) _pure_; int unit_write_drop_in(Unit *u, bool runtime, const char *name, const char *data); int unit_remove_drop_in(Unit *u, bool runtime, const char *name); -const char *unit_active_state_to_string(UnitActiveState i); -UnitActiveState unit_active_state_from_string(const char *s); +int unit_kill_context(Unit *u, KillContext *c, bool sigkill, pid_t main_pid, pid_t control_pid, bool main_pid_alien); + +const char *unit_active_state_to_string(UnitActiveState i) _const_; +UnitActiveState unit_active_state_from_string(const char *s) _pure_; + +const char *unit_dependency_to_string(UnitDependency i) _const_; +UnitDependency unit_dependency_from_string(const char *s) _pure_; -const char *unit_dependency_to_string(UnitDependency i); -UnitDependency unit_dependency_from_string(const char *s); +/* Macros which append UNIT= or USER_UNIT= to the message */ #define log_full_unit(level, unit, ...) log_meta_object(level, __FILE__, __LINE__, __func__, getpid() == 1 ? "UNIT=" : "USER_UNIT=", unit, __VA_ARGS__) #define log_debug_unit(unit, ...) log_full_unit(LOG_DEBUG, unit, __VA_ARGS__)