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authorLennart Poettering <lennart@poettering.net>2012-06-21 16:52:54 +0200
committerLennart Poettering <lennart@poettering.net>2012-06-21 16:52:54 +0200
commit20747498c68575646fae88f4dd270fab219a25a6 (patch)
tree5c229f9401637bd431c105849a3df5a34a5c9e5d
parent7ea9cb91207f49965bc23bfdac9d5475940bea51 (diff)
login: wrap CanTTY and CanGraphical seat attributes in libsystemd-login
-rw-r--r--man/sd_seat_get_active.xml31
-rw-r--r--man/sd_session_is_active.xml16
-rw-r--r--src/login/libsystemd-login.sym2
-rw-r--r--src/login/sd-login.c16
-rw-r--r--src/login/test-login.c8
-rw-r--r--src/systemd/sd-login.h6
6 files changed, 69 insertions, 10 deletions
diff --git a/man/sd_seat_get_active.xml b/man/sd_seat_get_active.xml
index 997c388901..82a1ea0481 100644
--- a/man/sd_seat_get_active.xml
+++ b/man/sd_seat_get_active.xml
@@ -72,6 +72,16 @@
<funcdef>int <function>sd_seat_can_multi_session</function></funcdef>
<paramdef>const char* <parameter>seat</parameter></paramdef>
</funcprototype>
+
+ <funcprototype>
+ <funcdef>int <function>sd_seat_can_tty</function></funcdef>
+ <paramdef>const char* <parameter>seat</parameter></paramdef>
+ </funcprototype>
+
+ <funcprototype>
+ <funcdef>int <function>sd_seat_can_graphical</function></funcdef>
+ <paramdef>const char* <parameter>seat</parameter></paramdef>
+ </funcprototype>
</funcsynopsis>
</refsynopsisdiv>
@@ -111,6 +121,15 @@
sessions in parallel (whith only one being active at a
time).</para>
+ <para><function>sd_seat_can_tty()</function> may be
+ used to determine whether a specific seat provides TTY
+ functionality, i.e. is useful as a text console.</para>
+
+ <para><function>sd_seat_can_graphical()</function> may
+ be used to determine whether a specific seat provides
+ graphics functionality, i.e. is useful as a graphics
+ display.</para>
+
<para>If the <literal>seat</literal> parameter of any
of these functions is passed as NULL the operation is
executed for the seat of the session of the calling
@@ -126,8 +145,10 @@
<function>sd_seat_get_sessions()</function> returns
the number of entries in the session identifier
array. If the test succeeds
- <function>sd_seat_can_multi_session</function> returns
- a positive integer, if it fails 0. On failure, these
+ <function>sd_seat_can_multi_session</function>,
+ <function>sd_seat_can_tty</function> and
+ <function>sd_seat_can_graphical</function> return a
+ positive integer, if it fails 0. On failure, these
calls return a negative errno-style error code.</para>
</refsect1>
@@ -135,8 +156,10 @@
<title>Notes</title>
<para>The <function>sd_seat_get_active()</function>,
- <function>sd_seat_get_sessions()</function>, and
- <function>sd_seat_can_multi_session()</function> interfaces
+ <function>sd_seat_get_sessions()</function>,
+ <function>sd_seat_can_multi_session()</function>,
+ <function>sd_seat_can_tty()</function> and
+ <function>sd_seat_can_grapical()</function> interfaces
are available as shared library, which can be compiled
and linked to with the
<literal>libsystemd-login</literal>
diff --git a/man/sd_session_is_active.xml b/man/sd_session_is_active.xml
index f9b2874541..a14286aeab 100644
--- a/man/sd_session_is_active.xml
+++ b/man/sd_session_is_active.xml
@@ -198,9 +198,13 @@
<para>If the test succeeds
<function>sd_session_is_active()</function> returns a
positive integer, if it fails 0. On success
+ <function>sd_session_get_state()</function>,
<function>sd_session_get_uid()</function>,
- <function>sd_session_get_service()</function> and
- <function>sd_session_get_seat()</function> return 0 or
+ <function>sd_session_get_seat()</function>,
+ <function>sd_session_get_service()</function>,
+ <function>sd_session_get_type()</function>,
+ <function>sd_session_get_class()</function> and
+ <function>sd_session_get_display()</function> return 0 or
a positive integer. On failure, these calls return a
negative errno-style error code.</para>
</refsect1>
@@ -209,9 +213,13 @@
<title>Notes</title>
<para>The <function>sd_session_is_active()</function>,
+ <function>sd_session_get_state()</function>,
<function>sd_session_get_uid()</function>,
- <function>sd_session_get_service()</function> and
- <function>sd_session_get_seat()</function> interfaces
+ <function>sd_session_get_seat()</function>,
+ <function>sd_session_get_service()</function>,
+ <function>sd_session_get_type()</function>,
+ <function>sd_session_get_class()</function> and
+ <function>sd_session_get_display()</function> interfaces
are available as shared library, which can be compiled
and linked to with the
<literal>libsystemd-login</literal>
diff --git a/src/login/libsystemd-login.sym b/src/login/libsystemd-login.sym
index 347e0730a6..ff51be729b 100644
--- a/src/login/libsystemd-login.sym
+++ b/src/login/libsystemd-login.sym
@@ -50,4 +50,6 @@ global:
LIBSYSTEMD_LOGIN_186 {
global:
sd_session_get_state;
+ sd_seat_can_tty;
+ sd_seat_can_graphical;
} LIBSYSTEMD_LOGIN_43;
diff --git a/src/login/sd-login.c b/src/login/sd-login.c
index 223e121bed..1978a05dc0 100644
--- a/src/login/sd-login.c
+++ b/src/login/sd-login.c
@@ -583,7 +583,7 @@ _public_ int sd_seat_get_sessions(const char *seat, char ***sessions, uid_t **ui
return r;
}
-_public_ int sd_seat_can_multi_session(const char *seat) {
+static int seat_get_can(const char *seat, const char *variable) {
char *p, *s = NULL;
int r;
@@ -592,7 +592,7 @@ _public_ int sd_seat_can_multi_session(const char *seat) {
return r;
r = parse_env_file(p, NEWLINE,
- "CAN_MULTI_SESSION", &s,
+ variable, &s,
NULL);
free(p);
@@ -610,6 +610,18 @@ _public_ int sd_seat_can_multi_session(const char *seat) {
return r;
}
+_public_ int sd_seat_can_multi_session(const char *seat) {
+ return seat_get_can(seat, "CAN_MULTI_SESSION");
+}
+
+_public_ int sd_seat_can_tty(const char *seat) {
+ return seat_get_can(seat, "CAN_TTY");
+}
+
+_public_ int sd_seat_can_graphical(const char *seat) {
+ return seat_get_can(seat, "CAN_GRAPHICAL");
+}
+
_public_ int sd_get_seats(char ***seats) {
return get_files_in_directory("/run/systemd/seats/", seats);
}
diff --git a/src/login/test-login.c b/src/login/test-login.c
index d0916ced6a..159ff3efc5 100644
--- a/src/login/test-login.c
+++ b/src/login/test-login.c
@@ -99,6 +99,14 @@ int main(int argc, char* argv[]) {
assert_se(r >= 0);
printf("can do multi session = %s\n", yes_no(r));
+ r = sd_seat_can_tty(seat);
+ assert_se(r >= 0);
+ printf("can do tty = %s\n", yes_no(r));
+
+ r = sd_seat_can_graphical(seat);
+ assert_se(r >= 0);
+ printf("can do graphical = %s\n", yes_no(r));
+
assert_se(sd_uid_get_state(u, &state) >= 0);
printf("state = %s\n", state);
diff --git a/src/systemd/sd-login.h b/src/systemd/sd-login.h
index bddc74e729..1a36a56b12 100644
--- a/src/systemd/sd-login.h
+++ b/src/systemd/sd-login.h
@@ -117,6 +117,12 @@ 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);