1 files changed, 185 insertions, 0 deletions
diff --git a/src/login/logind-session.h b/src/login/logind-session.h
new file mode 100644
index 0000000..8b63843
--- /dev/null
+++ b/src/login/logind-session.h
@@ -0,0 +1,185 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+typedef struct Session Session;
+typedef enum KillWho KillWho;
+
+#include "list.h"
+#include "login-util.h"
+#include "logind-user.h"
+#include "pidref.h"
+#include "string-util.h"
+
+typedef enum SessionState {
+        SESSION_OPENING,  /* Session scope is being created */
+        SESSION_ONLINE,   /* Logged in */
+        SESSION_ACTIVE,   /* Logged in and in the fg */
+        SESSION_CLOSING,  /* Logged out, but scope is still there */
+        _SESSION_STATE_MAX,
+        _SESSION_STATE_INVALID = -EINVAL,
+} SessionState;
+
+typedef enum SessionClass {
+        SESSION_USER,
+        SESSION_GREETER,
+        SESSION_LOCK_SCREEN,
+        SESSION_BACKGROUND,
+        _SESSION_CLASS_MAX,
+        _SESSION_CLASS_INVALID = -EINVAL,
+} SessionClass;
+
+typedef enum SessionType {
+        SESSION_UNSPECIFIED,
+        SESSION_TTY,
+        SESSION_X11,
+        SESSION_WAYLAND,
+        SESSION_MIR,
+        SESSION_WEB,
+        _SESSION_TYPE_MAX,
+        _SESSION_TYPE_INVALID = -EINVAL,
+} SessionType;
+
+#define SESSION_TYPE_IS_GRAPHICAL(type) IN_SET(type, SESSION_X11, SESSION_WAYLAND, SESSION_MIR)
+
+enum KillWho {
+        KILL_LEADER,
+        KILL_ALL,
+        _KILL_WHO_MAX,
+        _KILL_WHO_INVALID = -EINVAL,
+};
+
+typedef enum TTYValidity {
+        TTY_FROM_PAM,
+        TTY_FROM_UTMP,
+        TTY_UTMP_INCONSISTENT, /* may happen on ssh sessions with multiplexed TTYs */
+        _TTY_VALIDITY_MAX,
+        _TTY_VALIDITY_INVALID = -EINVAL,
+} TTYValidity;
+
+struct Session {
+        Manager *manager;
+
+        const char *id;
+        unsigned position;
+        SessionType type;
+        SessionType original_type;
+        SessionClass class;
+
+        char *state_file;
+
+        User *user;
+
+        dual_timestamp timestamp;
+
+        char *display;
+        char *tty;
+        TTYValidity tty_validity;
+
+        bool remote;
+        char *remote_user;
+        char *remote_host;
+        char *service;
+        char *desktop;
+
+        char *scope;
+        char *scope_job;
+
+        Seat *seat;
+        unsigned vtnr;
+        int vtfd;
+
+        PidRef leader;
+        uint32_t audit_id;
+
+        int fifo_fd;
+        char *fifo_path;
+
+        sd_event_source *fifo_event_source;
+        sd_event_source *leader_pidfd_event_source;
+
+        bool idle_hint;
+        dual_timestamp idle_hint_timestamp;
+
+        bool locked_hint;
+
+        bool in_gc_queue:1;
+        bool started:1;
+        bool stopping:1;
+
+        bool was_active:1;
+
+        sd_bus_message *create_message;
+
+        /* Set up when a client requested to release the session via the bus */
+        sd_event_source *timer_event_source;
+
+        char *controller;
+        Hashmap *devices;
+        sd_bus_track *track;
+
+        sd_event_source *stop_on_idle_event_source;
+
+        LIST_FIELDS(Session, sessions_by_user);
+        LIST_FIELDS(Session, sessions_by_seat);
+
+        LIST_FIELDS(Session, gc_queue);
+};
+
+int session_new(Session **ret, Manager *m, const char *id);
+Session* session_free(Session *s);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Session *, session_free);
+
+void session_set_user(Session *s, User *u);
+int session_set_leader_consume(Session *s, PidRef _leader);
+bool session_may_gc(Session *s, bool drop_not_started);
+void session_add_to_gc_queue(Session *s);
+int session_activate(Session *s);
+bool session_is_active(Session *s);
+int session_get_idle_hint(Session *s, dual_timestamp *t);
+int session_set_idle_hint(Session *s, bool b);
+int session_get_locked_hint(Session *s);
+void session_set_locked_hint(Session *s, bool b);
+void session_set_type(Session *s, SessionType t);
+int session_set_display(Session *s, const char *display);
+int session_set_tty(Session *s, const char *tty);
+int session_create_fifo(Session *s);
+int session_watch_pidfd(Session *s);
+int session_start(Session *s, sd_bus_message *properties, sd_bus_error *error);
+int session_stop(Session *s, bool force);
+int session_finalize(Session *s);
+int session_release(Session *s);
+int session_save(Session *s);
+int session_load(Session *s);
+int session_kill(Session *s, KillWho who, int signo);
+
+SessionState session_get_state(Session *u);
+
+const char* session_state_to_string(SessionState t) _const_;
+SessionState session_state_from_string(const char *s) _pure_;
+
+const char* session_type_to_string(SessionType t) _const_;
+SessionType session_type_from_string(const char *s) _pure_;
+
+const char* session_class_to_string(SessionClass t) _const_;
+SessionClass session_class_from_string(const char *s) _pure_;
+
+const char *kill_who_to_string(KillWho k) _const_;
+KillWho kill_who_from_string(const char *s) _pure_;
+
+const char* tty_validity_to_string(TTYValidity t) _const_;
+TTYValidity tty_validity_from_string(const char *s) _pure_;
+
+void session_leave_vt(Session *s);
+
+bool session_is_controller(Session *s, const char *sender);
+int session_set_controller(Session *s, const char *sender, bool force, bool prepare);
+void session_drop_controller(Session *s);
+
+static inline bool SESSION_IS_SELF(const char *name) {
+        return isempty(name) || streq(name, "self");
+}
+
+static inline bool SESSION_IS_AUTO(const char *name) {
+        return streq_ptr(name, "auto");
+}