X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=manager.h;h=a6500ac6007137df2da7136257621ae241973c4c;hp=870db97bc0a6bfef7c31d48f50f156efd3e4a2ef;hb=173e382182d7f1ad2b132b6e923ef731d6affdf7;hpb=2c4104f00923084a0455948da3664e8e63515686 diff --git a/manager.h b/manager.h index 870db97bc..a6500ac60 100644 --- a/manager.h +++ b/manager.h @@ -25,17 +25,30 @@ #include #include #include - #include +#include "fdset.h" + +/* Enforce upper limit how many names we allow */ +#define MANAGER_MAX_NAMES 2048 + typedef struct Manager Manager; typedef enum WatchType WatchType; typedef struct Watch Watch; +typedef enum ManagerExitCode { + MANAGER_RUNNING, + MANAGER_EXIT, + MANAGER_RELOAD, + MANAGER_REEXECUTE, + _MANAGER_EXIT_CODE_MAX, + _MANAGER_EXIT_CODE_INVALID = -1 +} ManagerExitCode; + typedef enum ManagerRunningAs { MANAGER_INIT, /* root and pid=1 */ MANAGER_SYSTEM, /* root and pid!=1 */ - MANAGER_SESSION, /* non-root */ + MANAGER_SESSION, /* non-root, for a session */ _MANAGER_RUNNING_AS_MAX, _MANAGER_RUNNING_AS_INVALID = -1 } ManagerRunningAs; @@ -54,12 +67,13 @@ enum WatchType { struct Watch { int fd; WatchType type; - bool fd_is_dupped; union { union Unit *unit; DBusWatch *bus_watch; DBusTimeout *bus_timeout; } data; + bool fd_is_dupped:1; + bool socket_accept:1; }; #include "unit.h" @@ -70,19 +84,39 @@ struct Watch { #include "dbus.h" #define SPECIAL_DEFAULT_TARGET "default.target" -#define SPECIAL_SYSLOG_SERVICE "syslog.service" -#define SPECIAL_DBUS_SERVICE "messagebus.service" + +/* This is not really intended to be started by directly. This is + * mostly so that other targets (reboot/halt/poweroff) can depend on + * it to bring all services down that want to be brought down on + * system shutdown. */ +#define SPECIAL_SHUTDOWN_TARGET "shutdown.target" + #define SPECIAL_LOGGER_SOCKET "systemd-logger.socket" + #define SPECIAL_KBREQUEST_TARGET "kbrequest.target" +#define SPECIAL_SIGPWR_TARGET "sigpwr.target" #define SPECIAL_CTRL_ALT_DEL_TARGET "ctrl-alt-del.target" + #define SPECIAL_LOCAL_FS_TARGET "local-fs.target" +#define SPECIAL_REMOTE_FS_TARGET "remote-fs.target" +#define SPECIAL_SWAP_TARGET "swap.target" #define SPECIAL_NETWORK_TARGET "network.target" #define SPECIAL_NSS_LOOKUP_TARGET "nss-lookup.target" /* LSB's $named */ #define SPECIAL_RPCBIND_TARGET "rpcbind.target" /* LSB's $portmap */ -#define SPECIAL_REMOTE_FS_TARGET "remote-fs.target" #define SPECIAL_SYSLOG_TARGET "syslog.target" /* Should pull in syslog.socket or syslog.service */ #define SPECIAL_RTC_SET_TARGET "rtc-set.target" /* LSB's $time */ +#define SPECIAL_BASIC_TARGET "basic.target" +#define SPECIAL_RESCUE_TARGET "rescue.target" + +#ifndef SPECIAL_DBUS_SERVICE +#define SPECIAL_DBUS_SERVICE "dbus.service" +#endif + +#ifndef SPECIAL_SYSLOG_SERVICE +#define SPECIAL_SYSLOG_SERVICE "syslog.service" +#endif + /* For SysV compatibility. Usually an alias for a saner target. On * SysV-free systems this doesn't exist. */ #define SPECIAL_RUNLEVEL0_TARGET "runlevel0.target" @@ -94,9 +128,6 @@ struct Watch { #define SPECIAL_RUNLEVEL6_TARGET "runlevel6.target" struct Manager { - /* In which mode are we running */ - ManagerRunningAs running_as; - uint32_t current_job_id; /* Note that the set of units we know of is allowed to be @@ -124,24 +155,31 @@ struct Manager { LIST_HEAD(Meta, dbus_unit_queue); LIST_HEAD(Job, dbus_job_queue); + /* Units to remove */ + LIST_HEAD(Meta, cleanup_queue); + + /* Units to check when doing GC */ + LIST_HEAD(Meta, gc_queue); + /* Jobs to be added */ Hashmap *transaction_jobs; /* Unit object => Job object list 1:1 */ JobDependency *transaction_anchor; - bool dispatching_load_queue:1; - bool dispatching_run_queue:1; - bool dispatching_dbus_queue:1; - - bool request_bus_dispatch:1; - Hashmap *watch_pids; /* pid => Unit object n:1 */ + Watch signal_watch; + int epoll_fd; - Watch signal_watch; + unsigned n_snapshots; char **unit_path; char **sysvinit_path; + char **sysvrcnd_path; + + char **environment; + + usec_t boot_timestamp; /* Data specific to the device subsystem */ struct udev* udev; @@ -152,15 +190,55 @@ struct Manager { FILE *proc_self_mountinfo; Watch mount_watch; + /* Data specific to the swap filesystem */ + FILE *proc_swaps; + /* Data specific to the D-Bus subsystem */ - DBusConnection *bus; + DBusConnection *api_bus, *system_bus; Set *subscribed; + DBusMessage *queued_message; /* This is used during reloading: + * before the reload we queue the + * reply message here, and + * afterwards we send it */ + + Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */ + int32_t name_data_slot; + + /* Data specific to the Automount subsystem */ + int dev_autofs_fd; + + /* Data specific to the cgroup subsystem */ + Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */ + char *cgroup_controller; + char *cgroup_hierarchy; + + usec_t gc_queue_timestamp; + + int gc_marker; + unsigned n_in_gc_queue; + + /* Flags */ + ManagerRunningAs running_as; + ManagerExitCode exit_code:4; + + bool dispatching_load_queue:1; + bool dispatching_run_queue:1; + bool dispatching_dbus_queue:1; + + bool request_api_bus_dispatch:1; + bool request_system_bus_dispatch:1; + + bool utmp_reboot_written:1; + + bool confirm_spawn:1; }; -Manager* manager_new(void); +int manager_new(ManagerRunningAs running_as, bool confirm_spawn, Manager **m); void manager_free(Manager *m); +int manager_enumerate(Manager *m); int manager_coldplug(Manager *m); +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); @@ -168,13 +246,16 @@ Unit *manager_get_unit(Manager *m, const char *name); int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u); int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j); -int manager_load_unit(Manager *m, const char *path_or_name, Unit **_ret); +int manager_load_unit_prepare(Manager *m, const char *name, const char *path, Unit **_ret); +int manager_load_unit(Manager *m, const char *name, const char *path, Unit **_ret); + int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, Job **_ret); +int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, Job **_ret); void manager_dump_units(Manager *s, FILE *f, const char *prefix); void manager_dump_jobs(Manager *s, FILE *f, const char *prefix); -void manager_transaction_unlink_job(Manager *m, Job *j); +void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies); void manager_clear_jobs(Manager *m); @@ -184,6 +265,19 @@ unsigned manager_dispatch_dbus_queue(Manager *m); int manager_loop(Manager *m); +void manager_write_utmp_reboot(Manager *m); +void manager_write_utmp_runlevel(Manager *m, Unit *t); + +void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner); +void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid); + +int manager_open_serialization(FILE **_f); + +int manager_serialize(Manager *m, FILE *f, FDSet *fds); +int manager_deserialize(Manager *m, FILE *f, FDSet *fds); + +int manager_reload(Manager *m); + const char *manager_running_as_to_string(ManagerRunningAs i); ManagerRunningAs manager_running_as_from_string(const char *s);