X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fsystemd%2Fsd-login.h;h=3746b45cf36500abdcfd9a6f187bd477c8498289;hp=7746c742ffd9123de089ba21807b70e37497c0bf;hb=d1148ed10a474ccc949113a8ec06e7e29c4c7cb0;hpb=f9873976499de5c90c703e04a3bee96848fc90c8

diff --git a/src/systemd/sd-login.h b/src/systemd/sd-login.h
index 7746c742f..3746b45cf 100644
--- a/src/systemd/sd-login.h
+++ b/src/systemd/sd-login.h
@@ -9,16 +9,16 @@
   Copyright 2011 Lennart Poettering
 
   systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
   (at your option) any later version.
 
   systemd is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  General Public License for more details.
+  Lesser General Public License for more details.
 
-  You should have received a copy of the GNU General Public License
+  You should have received a copy of the GNU Lesser General Public License
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
@@ -34,7 +34,9 @@ extern "C" {
  * Instead of returning an empty string array or empty uid array, we
  * may return NULL.
  *
- * Free the data we return with libc free().
+ * Free the data the library returns with libc free(). String arrays
+ * are NULL terminated and you need to free the array itself in
+ * addition to the strings contained.
  *
  * We return error codes as negative errno, kernel-style. 0 or
  * positive on success.
@@ -42,6 +44,8 @@ extern "C" {
  * These functions access data in /proc, /sys/fs/cgroup and /run. All
  * of these are virtual file systems, hence the accesses are
  * relatively cheap.
+ *
+ * See sd-login(3) for more information.
  */
 
 /* Get session from PID. Note that 'shared' processes of a user are
@@ -61,7 +65,7 @@ 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
@@ -78,9 +82,14 @@ 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);
 
@@ -90,6 +99,18 @@ int sd_session_get_seat(const char *session, char **seat);
 /* Determine the (PAM) service name this session was registered by. */
 int sd_session_get_service(const char *session, char **service);
 
+/* Determine the type of this session, i.e. one of "tty", "x11" or "unspecified". */
+int sd_session_get_type(const char *session, char **type);
+
+/* Determine the class of this session, i.e. one of "user", "greeter" or "lock-screen". */
+int sd_session_get_class(const char *session, char **clazz);
+
+/* Determine the X11 display of this session. */
+int sd_session_get_display(const char *session, char **display);
+
+/* Determine the TTY of this session. */
+int sd_session_get_tty(const char *session, char **display);
+
 /* Return active session and user of seat */
 int sd_seat_get_active(const char *seat, char **session, uid_t *uid);
 
@@ -101,6 +122,12 @@ int sd_seat_get_sessions(const char *seat, char ***sessions, uid_t **uid, unsign
 /* Return whether the seat is multi-session capable */
 int sd_seat_can_multi_session(const char *seat);
 
+/* Return whether the seat is TTY capable, i.e. suitable for showing console UIs */
+int sd_seat_can_tty(const char *seat);
+
+/* Return whether the seat is graphics capable, i.e. suitable for showing graphical UIs */
+int sd_seat_can_graphical(const char *seat);
+
 /* Get all seats, store in *seats. Returns the number of seats. If
  * seats is NULL only returns number of seats. */
 int sd_get_seats(char ***seats);