X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Funit.h;h=a773762f36950a6a81543173c07919cfa1824e2d;hp=1a558423f7711f12c2aaa8a6ee0599d05039108d;hb=cb87a73b45503eaa6bead291423a529b00d27156;hpb=9588bc32096fc8342bfd8b989689717186d7d86e diff --git a/src/core/unit.h b/src/core/unit.h index 1a558423f..a773762f3 100644 --- a/src/core/unit.h +++ b/src/core/unit.h @@ -28,10 +28,10 @@ typedef struct Unit Unit; typedef struct UnitVTable UnitVTable; typedef enum UnitActiveState UnitActiveState; -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" @@ -69,50 +69,6 @@ static inline bool UNIT_IS_INACTIVE_OR_FAILED(UnitActiveState t) { return t == UNIT_INACTIVE || t == UNIT_FAILED; } -enum UnitDependency { - /* Positive dependencies */ - UNIT_REQUIRES, - UNIT_REQUIRES_OVERRIDABLE, - UNIT_REQUISITE, - UNIT_REQUISITE_OVERRIDABLE, - UNIT_WANTS, - UNIT_BINDS_TO, - UNIT_PART_OF, - - /* Inverse of the above */ - UNIT_REQUIRED_BY, /* inverse of 'requires' and 'requisite' is 'required_by' */ - UNIT_REQUIRED_BY_OVERRIDABLE, /* inverse of 'requires_overridable' and 'requisite_overridable' is 'soft_required_by' */ - UNIT_WANTED_BY, /* inverse of 'wants' */ - UNIT_BOUND_BY, /* inverse of 'binds_to' */ - UNIT_CONSISTS_OF, /* inverse of 'part_of' */ - - /* Negative dependencies */ - UNIT_CONFLICTS, /* inverse of 'conflicts' is 'conflicted_by' */ - UNIT_CONFLICTED_BY, - - /* Order */ - UNIT_BEFORE, /* inverse of 'before' is 'after' and vice versa */ - UNIT_AFTER, - - /* On Failure */ - UNIT_ON_FAILURE, - - /* Triggers (i.e. a socket triggers a service) */ - UNIT_TRIGGERS, - UNIT_TRIGGERED_BY, - - /* Propagate reloads */ - UNIT_PROPAGATES_RELOAD_TO, - UNIT_RELOAD_PROPAGATED_FROM, - - /* Reference information for GC logic */ - UNIT_REFERENCES, /* Inverse of 'references' is 'referenced_by' */ - UNIT_REFERENCED_BY, - - _UNIT_DEPENDENCY_MAX, - _UNIT_DEPENDENCY_INVALID = -1 -}; - #include "manager.h" #include "job.h" @@ -173,7 +129,9 @@ struct Unit { /* Counterparts in the cgroup filesystem */ char *cgroup_path; - CGroupControllerMask cgroup_mask; + CGroupControllerMask cgroup_realized_mask; + CGroupControllerMask cgroup_subtree_mask; + CGroupControllerMask cgroup_members_mask; UnitRef slice; @@ -198,6 +156,11 @@ 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; @@ -228,8 +191,8 @@ 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; @@ -256,6 +219,8 @@ struct Unit { bool in_audit:1; bool cgroup_realized:1; + bool cgroup_members_mask_valid:1; + bool cgroup_subtree_mask_valid:1; }; struct UnitStatusMessageFormats { @@ -271,14 +236,15 @@ 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" @@ -295,6 +261,15 @@ 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; @@ -327,7 +302,7 @@ 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); @@ -359,9 +334,8 @@ 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); @@ -377,14 +351,8 @@ 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); @@ -402,6 +370,8 @@ 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 @@ -412,14 +382,13 @@ 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? */ @@ -453,15 +422,16 @@ 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); @@ -501,7 +471,7 @@ int unit_load_fragment_and_dropin(Unit *u); int unit_load_fragment_and_dropin_optional(Unit *u); int unit_load(Unit *unit); -int unit_add_default_slice(Unit *u); +int unit_add_default_slice(Unit *u, CGroupContext *c); const char *unit_description(Unit *u) _pure_; @@ -521,19 +491,17 @@ 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); @@ -563,6 +531,7 @@ 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); @@ -574,8 +543,6 @@ 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); @@ -587,11 +554,16 @@ void unit_ref_unset(UnitRef *ref); #define UNIT_DEREF(ref) ((ref).unit) #define UNIT_ISSET(ref) (!!(ref).unit) -int unit_exec_context_defaults(Unit *u, ExecContext *c); +int unit_patch_contexts(Unit *u); 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); @@ -609,9 +581,6 @@ 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_; -const char *unit_dependency_to_string(UnitDependency i) _const_; -UnitDependency unit_dependency_from_string(const char *s) _pure_; - /* 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__)