X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Funit.h;h=34afe93e655bf98d6194f6c48b82f30083eaba9b;hp=c344719b1603c57201e29dd1614f81958ce6e1fb;hb=7452394e2ecb1dc994c1e9215592bcef28681396;hpb=8e2af478402414f060bbc16e1b4bbe7de1779c13 diff --git a/src/core/unit.h b/src/core/unit.h index c344719b1..34afe93e6 100644 --- a/src/core/unit.h +++ b/src/core/unit.h @@ -32,6 +32,7 @@ typedef enum UnitDependency UnitDependency; typedef struct UnitRef UnitRef; typedef struct UnitStatusMessageFormats UnitStatusMessageFormats; +#include "sd-event.h" #include "set.h" #include "util.h" #include "list.h" @@ -105,6 +106,9 @@ enum UnitDependency { UNIT_PROPAGATES_RELOAD_TO, UNIT_RELOAD_PROPAGATED_FROM, + /* Joins namespace of */ + UNIT_JOINS_NAMESPACE_OF, + /* Reference information for GC logic */ UNIT_REFERENCES, /* Inverse of 'references' is 'referenced_by' */ UNIT_REFERENCED_BY, @@ -173,8 +177,9 @@ struct Unit { /* Counterparts in the cgroup filesystem */ char *cgroup_path; - bool cgroup_realized; - CGroupControllerMask cgroup_mask; + CGroupControllerMask cgroup_realized_mask; + CGroupControllerMask cgroup_subtree_mask; + CGroupControllerMask cgroup_members_mask; UnitRef slice; @@ -199,6 +204,11 @@ struct Unit { /* CGroup realize members queue */ LIST_FIELDS(Unit, cgroup_queue); + /* PIDs we keep an eye on. Note that a unit might have many + * more, but these are the ones we care enough about to + * process SIGCHLD for */ + Set *pids; + /* Used during GC sweeps */ unsigned gc_marker; @@ -229,8 +239,8 @@ struct Unit { /* Allow isolation requests */ bool allow_isolate; - /* Isolate OnFailure unit */ - bool on_failure_isolate; + /* How to start OnFailure units */ + JobMode on_failure_job_mode; /* Ignore this unit when isolating */ bool ignore_on_isolate; @@ -241,6 +251,9 @@ struct Unit { /* Did the last condition check succeed? */ bool condition_result; + /* Is this a transient unit? */ + bool transient; + bool in_load_queue:1; bool in_dbus_queue:1; bool in_cleanup_queue:1; @@ -252,6 +265,10 @@ struct Unit { bool no_gc:1; bool in_audit:1; + + bool cgroup_realized:1; + bool cgroup_members_mask_valid:1; + bool cgroup_subtree_mask_valid:1; }; struct UnitStatusMessageFormats { @@ -267,16 +284,18 @@ typedef enum UnitSetPropertiesMode { } UnitSetPropertiesMode; #include "service.h" -#include "timer.h" #include "socket.h" +#include "busname.h" #include "target.h" +#include "snapshot.h" #include "device.h" #include "mount.h" #include "automount.h" -#include "snapshot.h" #include "swap.h" +#include "timer.h" #include "path.h" #include "slice.h" +#include "scope.h" struct UnitVTable { /* How much memory does an object of this unit type need */ @@ -290,6 +309,15 @@ struct UnitVTable { * CGroupContext is found, if the unit type has that */ size_t cgroup_context_offset; + /* If greater than 0, the offset into the object where + * KillContext is found, if the unit type has that */ + size_t kill_context_offset; + + /* If greater than 0, the offset into the object where the + * pointer to ExecRuntime is found, if the unit type has + * that */ + size_t exec_runtime_offset; + /* The name of the configuration file section with the private settings of this unit*/ const char *private_section; @@ -322,7 +350,7 @@ struct UnitVTable { int (*stop)(Unit *u); int (*reload)(Unit *u); - int (*kill)(Unit *u, KillWho w, int signo, DBusError *error); + int (*kill)(Unit *u, KillWho w, int signo, sd_bus_error *error); bool (*can_reload)(Unit *u); @@ -354,9 +382,8 @@ struct UnitVTable { /* Return true when this unit is suitable for snapshotting */ bool (*check_snapshot)(Unit *u); - void (*fd_event)(Unit *u, int fd, uint32_t events, Watch *w); + /* Invoked on every child that died */ void (*sigchld_event)(Unit *u, pid_t pid, int code, int status); - void (*timer_event)(Unit *u, uint64_t n_elapsed, Watch *w); /* Reset failed state if we are in failed state */ void (*reset_failed)(Unit *u); @@ -372,14 +399,8 @@ struct UnitVTable { * goes away. */ void (*bus_name_owner_change)(Unit *u, const char *name, const char *old_owner, const char *new_owner); - /* Called whenever a bus PID lookup finishes */ - void (*bus_query_pid_done)(Unit *u, const char *name, pid_t pid); - - /* Called for each message received on the bus */ - DBusHandlerResult (*bus_message_handler)(Unit *u, DBusConnection *c, DBusMessage *message); - /* Called for each property that is being set */ - int (*bus_set_property)(Unit *u, const char *name, DBusMessageIter *i, UnitSetPropertiesMode mode, DBusError *error); + int (*bus_set_property)(Unit *u, const char *name, sd_bus_message *message, UnitSetPropertiesMode mode, sd_bus_error *error); /* Called after at least one property got changed to apply the necessary change */ int (*bus_commit_properties)(Unit *u); @@ -397,6 +418,8 @@ struct UnitVTable { /* Called whenever CLOCK_REALTIME made a jump */ void (*time_change)(Unit *u); + int (*get_timeout)(Unit *u, uint64_t *timeout); + /* This is called for each unit type and should be used to * enumerate existing devices and load them. However, * everything that is loaded here should still stay in @@ -407,14 +430,13 @@ struct UnitVTable { /* Type specific cleanups. */ void (*shutdown)(Manager *m); - /* When sending out PropertiesChanged signal, which properties - * shall be invalidated? This is a NUL separated list of - * strings, to minimize relocations a little. */ - const char *bus_invalidating_properties; - /* The interface name */ const char *bus_interface; + /* The bus vtable */ + const sd_bus_vtable *bus_vtable; + + /* The strings to print in status messages */ UnitStatusMessageFormats status_message_formats; /* Can units of this type have multiple names? */ @@ -425,6 +447,9 @@ struct UnitVTable { /* Exclude from automatic gc */ bool no_gc:1; + + /* True if transient units of this type are OK */ + bool can_transient:1; }; extern const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX]; @@ -445,17 +470,19 @@ extern const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX]; #define UNIT_TRIGGER(u) ((Unit*) set_first((u)->dependencies[UNIT_TRIGGERS])) -DEFINE_CAST(SOCKET, Socket); -DEFINE_CAST(TIMER, Timer); DEFINE_CAST(SERVICE, Service); +DEFINE_CAST(SOCKET, Socket); +DEFINE_CAST(BUSNAME, BusName); DEFINE_CAST(TARGET, Target); +DEFINE_CAST(SNAPSHOT, Snapshot); DEFINE_CAST(DEVICE, Device); DEFINE_CAST(MOUNT, Mount); DEFINE_CAST(AUTOMOUNT, Automount); -DEFINE_CAST(SNAPSHOT, Snapshot); DEFINE_CAST(SWAP, Swap); +DEFINE_CAST(TIMER, Timer); DEFINE_CAST(PATH, Path); DEFINE_CAST(SLICE, Slice); +DEFINE_CAST(SCOPE, Scope); Unit *unit_new(Manager *m, size_t size); void unit_free(Unit *u); @@ -512,19 +539,17 @@ 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); +int unit_kill(Unit *u, KillWho w, int signo, sd_bus_error *error); +int unit_kill_common(Unit *u, KillWho who, int signo, pid_t main_pid, pid_t control_pid, sd_bus_error *error); void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success); -int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w); -void unit_unwatch_fd(Unit *u, Watch *w); - int unit_watch_pid(Unit *u, pid_t pid); void unit_unwatch_pid(Unit *u, pid_t pid); +int unit_watch_all_pids(Unit *u); +void unit_unwatch_all_pids(Unit *u); -int unit_watch_timer(Unit *u, clockid_t, bool relative, usec_t usec, Watch *w); -void unit_unwatch_timer(Unit *u, Watch *w); +void unit_tidy_watch_pids(Unit *u, pid_t except1, pid_t except2); int unit_watch_bus_name(Unit *u, const char *name); void unit_unwatch_bus_name(Unit *u, const char *name); @@ -536,11 +561,10 @@ int set_unit_path(const char *p); 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) _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_format(Unit *u, FILE *f, const char *key, const char *value, ...) _printf_(4,5); void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value); int unit_deserialize(Unit *u, FILE *f, FDSet *fds); @@ -548,13 +572,14 @@ 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 *unit_status_msg_format) _printf_attr_(3, 0); +void unit_status_printf(Unit *u, const char *status, const char *unit_status_msg_format) _printf_(3, 0); bool unit_need_daemon_reload(Unit *u); void unit_reset_failed(Unit *u); Unit *unit_following(Unit *u); +int unit_following_set(Unit *u, Set **s); const char *unit_slice_name(Unit *u); @@ -566,13 +591,9 @@ int unit_add_default_target_dependency(Unit *u, Unit *target); char *unit_default_cgroup_path(Unit *u); -int unit_following_set(Unit *u, Set **s); - void unit_start_on_failure(Unit *u); void unit_trigger_notify(Unit *u); -bool unit_condition_test(Unit *u); - UnitFileState unit_get_unit_file_state(Unit *u); Unit* unit_ref_set(UnitRef *ref, Unit *u); @@ -581,19 +602,30 @@ 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); +int unit_exec_context_patch_defaults(Unit *u, ExecContext *c); +int unit_cgroup_context_init_defaults(Unit *u, CGroupContext *c); ExecContext *unit_get_exec_context(Unit *u) _pure_; +KillContext *unit_get_kill_context(Unit *u) _pure_; CGroupContext *unit_get_cgroup_context(Unit *u) _pure_; +ExecRuntime *unit_get_exec_runtime(Unit *u) _pure_; + +int unit_setup_exec_runtime(Unit *u); int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data); +int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) _printf_(4,5); + +int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data); +int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) _printf_(4,5); + int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name); int unit_kill_context(Unit *u, KillContext *c, bool sigkill, pid_t main_pid, pid_t control_pid, bool main_pid_alien); +int unit_make_transient(Unit *u); + +int unit_require_mounts_for(Unit *u, const char *path); + const char *unit_active_state_to_string(UnitActiveState i) _const_; UnitActiveState unit_active_state_from_string(const char *s) _pure_;