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logind: introduce a state for session, being one of online, active, closing

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online = logged in
active = logged in and session is in the fg
closing = nominally logged out but some left-over processes still around

Related to:

https://bugzilla.gnome.org/show_bug.cgi?id=677556
This commit is contained in:
Lennart Poettering 2012-06-21 16:14:53 +02:00
parent f1a8e221ec
commit 0604381b9d
10 changed files with 108 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
TODO
View File

@ -25,6 +25,8 @@ Bugfixes:
Features:
* exclude processes marked with argv[0][0]=@ from the normal service killing too
* support rd.luks= kernel cmdline params in cryptsetup generator
* support rd.fstab= kernel cmdline params in fstab generator

5
src/login/libsystemd-login.sym
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@ -46,3 +46,8 @@ global:
sd_session_get_class;
sd_session_get_display;
} LIBSYSTEMD_LOGIN_38;
LIBSYSTEMD_LOGIN_186 {
global:
sd_session_get_state;
} LIBSYSTEMD_LOGIN_43;

10
src/login/loginctl.c
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@ -364,7 +364,7 @@ typedef struct SessionStatusInfo {
pid_t leader;
const char *type;
const char *class;
bool active;
const char *state;
} SessionStatusInfo;
typedef struct UserStatusInfo {
@ -458,8 +458,8 @@ static void print_session_status_info(SessionStatusInfo *i) {
} else if (i->class)
printf("\t Class: %s\n", i->class);
printf("\t Active: %s\n", yes_no(i->active));
if (i->state)
printf("\t State: %s\n", i->state);
if (i->default_control_group) {
unsigned c;
@ -597,6 +597,8 @@ static int status_property_session(const char *name, DBusMessageIter *iter, Sess
i->type = s;
else if (streq(name, "Class"))
i->class = s;
else if (streq(name, "State"))
i->state = s;
}
break;
}
@ -621,8 +623,6 @@ static int status_property_session(const char *name, DBusMessageIter *iter, Sess
if (streq(name, "Remote"))
i->remote = b;
else if (streq(name, "Active"))
i->active = b;
break;
}

22
src/login/logind-session-dbus.c
View File

@ -53,12 +53,13 @@
" <property name=\"Remote\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"RemoteHost\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"RemoteUser\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Service\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Service\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Leader\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"Audit\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"Type\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Class\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Class\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Active\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"State\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Controllers\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"ResetControllers\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"KillProcesses\" type=\"b\" access=\"read\"/>\n" \
@ -219,6 +220,22 @@ static int bus_session_append_default_cgroup(DBusMessageIter *i, const char *pro
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_session_append_type, session_type, SessionType);
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_session_append_class, session_class, SessionClass);
static int bus_session_append_state(DBusMessageIter *i, const char *property, void *data) {
Session *s = data;
const char *state;
assert(i);
assert(property);
assert(s);
state = session_state_to_string(session_get_state(s));
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))
return -ENOMEM;
return 0;
}
static int get_session_for_path(Manager *m, const char *path, Session **_s) {
Session *s;
char *id;
@ -262,6 +279,7 @@ static const BusProperty bus_login_session_properties[] = {
{ "Type", bus_session_append_type, "s", offsetof(Session, type) },
{ "Class", bus_session_append_class, "s", offsetof(Session, class) },
{ "Active", bus_session_append_active, "b", 0 },
{ "State", bus_session_append_state, "s", 0 },
{ "Controllers", bus_property_append_strv, "as", offsetof(Session, controllers), true },
{ "ResetControllers", bus_property_append_strv, "as", offsetof(Session, reset_controllers), true },
{ "KillProcesses", bus_property_append_bool, "b", offsetof(Session, kill_processes) },

22
src/login/logind-session.c
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@ -133,11 +133,13 @@ int session_save(Session *s) {
"UID=%lu\n"
"USER=%s\n"
"ACTIVE=%i\n"
"STATE=%s\n"
"REMOTE=%i\n"
"KILL_PROCESSES=%i\n",
(unsigned long) s->user->uid,
s->user->name,
session_is_active(s),
session_state_to_string(session_get_state(s)),
s->remote,
s->kill_processes);
@ -913,6 +915,18 @@ void session_add_to_gc_queue(Session *s) {
s->in_gc_queue = true;
}
SessionState session_get_state(Session *s) {
assert(s);
if (s->fifo_fd < 0)
return SESSION_CLOSING;
if (session_is_active(s))
return SESSION_ACTIVE;
return SESSION_ONLINE;
}
int session_kill(Session *s, KillWho who, int signo) {
int r = 0;
Set *pid_set = NULL;
@ -954,6 +968,14 @@ int session_kill(Session *s, KillWho who, int signo) {
return r;
}
static const char* const session_state_table[_SESSION_TYPE_MAX] = {
[SESSION_ONLINE] = "online",
[SESSION_ACTIVE] = "active",
[SESSION_CLOSING] = "closing"
};
DEFINE_STRING_TABLE_LOOKUP(session_state, SessionState);
static const char* const session_type_table[_SESSION_TYPE_MAX] = {
[SESSION_TTY] = "tty",
[SESSION_X11] = "x11",

13
src/login/logind-session.h
View File

@ -30,6 +30,14 @@ typedef struct Session Session;
#include "logind-seat.h"
#include "logind-user.h"
typedef enum SessionState {
SESSION_ONLINE, /* Logged in */
SESSION_ACTIVE, /* Logged in and in the fg */
SESSION_CLOSING, /* Logged out, but processes still remain */
_SESSION_STATE_MAX,
_SESSION_STATE_INVALID = -1
} SessionState;
typedef enum SessionType {
SESSION_UNSPECIFIED,
SESSION_TTY,
@ -118,12 +126,17 @@ int session_kill(Session *s, KillWho who, int signo);
char *session_bus_path(Session *s);
SessionState session_get_state(Session *u);
extern const DBusObjectPathVTable bus_session_vtable;
int session_send_signal(Session *s, bool new_session);
int session_send_changed(Session *s, const char *properties);
int session_send_lock(Session *s, bool lock);
const char* session_state_to_string(SessionState t);
SessionState session_state_from_string(const char *s);
const char* session_type_to_string(SessionType t);
SessionType session_type_from_string(const char *s);

10
src/login/logind-user.h
View File

@ -30,11 +30,11 @@ typedef struct User User;
#include "logind-session.h"
typedef enum UserState {
USER_OFFLINE,
USER_LINGERING,
USER_ONLINE,
USER_ACTIVE,
USER_CLOSING,
USER_OFFLINE, /* Not logged in at all */
USER_LINGERING, /* Lingering has been enabled by the admin for this user */
USER_ONLINE, /* User logged in */
USER_ACTIVE, /* User logged in and has a session in the fg */
USER_CLOSING, /* User logged out, but processes still remain and lingering is not enabled */
_USER_STATE_MAX,
_USER_STATE_INVALID = -1
} UserState;

24
src/login/sd-login.c
View File

@ -317,6 +317,30 @@ _public_ int sd_session_is_active(const char *session) {
return r;
}
_public_ int sd_session_get_state(const char *session, char **state) {
char *p, *s = NULL;
int r;
if (!state)
return -EINVAL;
r = file_of_session(session, &p);
if (r < 0)
return r;
r = parse_env_file(p, NEWLINE, "STATE", &s, NULL);
free(p);
if (r < 0) {
free(s);
return r;
} else if (!s)
return -EIO;
*state = s;
return 0;
}
_public_ int sd_session_get_uid(const char *session, uid_t *uid) {
int r;
char *p, *s = NULL;

5
src/login/test-login.c
View File

@ -71,6 +71,11 @@ int main(int argc, char* argv[]) {
assert_se(r >= 0);
printf("active = %s\n", yes_no(r));
r = sd_session_get_state(session, &state);
assert_se(r >= 0);
printf("state = %s\n", state);
free(state);
assert_se(sd_session_get_uid(session, &u) >= 0);
printf("uid = %lu\n", (unsigned long) u);
assert_se(u == u2);

9
src/systemd/sd-login.h
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@ -63,7 +63,7 @@ int sd_pid_get_owner_uid(pid_t pid, uid_t *uid);
* error for non-service processes. */
int sd_pid_get_unit(pid_t, char **unit);
/* Get state from uid. Possible states: offline, lingering, online, active */
/* Get state from uid. Possible states: offline, lingering, online, active, closing */
int sd_uid_get_state(uid_t uid, char**state);
/* Return 1 if uid has session on seat. If require_active is true will
@ -80,9 +80,14 @@ int sd_uid_get_sessions(uid_t uid, int require_active, char ***sessions);
* just return number of seats.*/
int sd_uid_get_seats(uid_t uid, int require_active, char ***seats);
/* Return 1 if the session is a active */
/* Return 1 if the session is a active. */
int sd_session_is_active(const char *session);
/* Get state from session. Possible states: online, active, closing
* (This function is a more generic version of
* sd_session_is_active().) */
int sd_session_get_state(const char *sessio, char **state);
/* Determine user id of session */
int sd_session_get_uid(const char *session, uid_t *uid);