summaryrefslogtreecommitdiff
path: root/src/console/consoled-session.c
diff options
context:
space:
mode:
authorDavid Herrmann <dh.herrmann@gmail.com>2014-10-03 15:58:44 +0200
committerDavid Herrmann <dh.herrmann@gmail.com>2014-10-03 16:07:14 +0200
commitce7b9f50c3fadbad22feeb28e4429ad9bee02bcc (patch)
treeb5f12ae9987b4f0ad0170fe9d2675f9c78d97c0b /src/console/consoled-session.c
parent48fed5c55b5183e6d44702dfdccd3b5325d8689c (diff)
console: add user console daemon
This adds a first draft of systemd-consoled. This is still missing a lot of features and does some rather primitive rendering. However, it shows the direction this code is going and serves as basis for further testing. The systemd-consoled binary should be run as `systemd --user' unit. It automatically picks up any session marked as Desktop=SYSTEMD-CONSOLE. Therefore, you can use any login-manager you want (ranging from /bin/login to gdm) to create sessions for systemd-consoled. However, the sessions managers must be prepared to set the Desktop= variable properly. The user-session is called `systemd-console', only the daemon providing the terminal environment is called `systemd-consoled' (mind the 'd'). So far, only a single terminal session is provided on each opened user-session. However, we support multiple user-sessions (even across multiple seats) just fine. In the future, the workspace logic will get extended so you can have multiple terminal sessions in a single user-session for easier access. Note that this is still experimental! Instructions on how to run it will follow shortly.
Diffstat (limited to 'src/console/consoled-session.c')
-rw-r--r--src/console/consoled-session.c283
1 files changed, 283 insertions, 0 deletions
diff --git a/src/console/consoled-session.c b/src/console/consoled-session.c
new file mode 100644
index 0000000000..8bacacab35
--- /dev/null
+++ b/src/console/consoled-session.c
@@ -0,0 +1,283 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 David Herrmann <dh.herrmann@gmail.com>
+
+ systemd is free software; you can redistribute it and/or modify it
+ 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <inttypes.h>
+#include <libudev.h>
+#include <stdlib.h>
+#include "consoled.h"
+#include "grdev.h"
+#include "hashmap.h"
+#include "idev.h"
+#include "list.h"
+#include "macro.h"
+#include "sd-bus.h"
+#include "sd-event.h"
+#include "sysview.h"
+#include "util.h"
+
+static bool session_feed_keyboard(Session *s, idev_data *data) {
+ idev_data_keyboard *kdata = &data->keyboard;
+
+ if (!data->resync && kdata->value == 1 && kdata->n_syms == 1) {
+ uint32_t nr;
+ sysview_seat *seat;
+
+ /* handle VT-switch requests */
+ nr = 0;
+
+ switch (kdata->keysyms[0]) {
+ case XKB_KEY_F1 ... XKB_KEY_F12:
+ if (IDEV_KBDMATCH(kdata,
+ IDEV_KBDMOD_CTRL | IDEV_KBDMOD_ALT,
+ kdata->keysyms[0]))
+ nr = kdata->keysyms[0] - XKB_KEY_F1 + 1;
+ break;
+ case XKB_KEY_XF86Switch_VT_1 ... XKB_KEY_XF86Switch_VT_12:
+ nr = kdata->keysyms[0] - XKB_KEY_XF86Switch_VT_1 + 1;
+ break;
+ }
+
+ if (nr != 0) {
+ seat = sysview_session_get_seat(s->sysview);
+ sysview_seat_switch_to(seat, nr);
+ return true;
+ }
+ }
+
+ return false;
+}
+
+static bool session_feed(Session *s, idev_data *data) {
+ switch (data->type) {
+ case IDEV_DATA_KEYBOARD:
+ return session_feed_keyboard(s, data);
+ default:
+ return false;
+ }
+}
+
+static int session_idev_fn(idev_session *idev, void *userdata, idev_event *event) {
+ Session *s = userdata;
+
+ switch (event->type) {
+ case IDEV_EVENT_DEVICE_ADD:
+ idev_device_enable(event->device_add.device);
+ break;
+ case IDEV_EVENT_DEVICE_REMOVE:
+ idev_device_disable(event->device_remove.device);
+ break;
+ case IDEV_EVENT_DEVICE_DATA:
+ if (!session_feed(s, &event->device_data.data))
+ workspace_feed(s->active_ws, &event->device_data.data);
+ break;
+ }
+
+ return 0;
+}
+
+static void session_grdev_fn(grdev_session *grdev, void *userdata, grdev_event *event) {
+ grdev_display *display;
+ Session *s = userdata;
+ Display *d;
+ int r;
+
+ switch (event->type) {
+ case GRDEV_EVENT_DISPLAY_ADD:
+ display = event->display_add.display;
+
+ r = display_new(&d, s, display);
+ if (r < 0) {
+ log_error("Cannot create display '%s' on '%s': %s",
+ grdev_display_get_name(display), sysview_session_get_name(s->sysview), strerror(-r));
+ break;
+ }
+
+ grdev_display_set_userdata(display, d);
+ workspace_refresh(s->active_ws);
+ break;
+ case GRDEV_EVENT_DISPLAY_REMOVE:
+ display = event->display_remove.display;
+ d = grdev_display_get_userdata(display);
+ if (!d)
+ break;
+
+ display_free(d);
+ workspace_refresh(s->active_ws);
+ break;
+ case GRDEV_EVENT_DISPLAY_CHANGE:
+ display = event->display_remove.display;
+ d = grdev_display_get_userdata(display);
+ if (!d)
+ break;
+
+ display_refresh(d);
+ workspace_refresh(s->active_ws);
+ break;
+ case GRDEV_EVENT_DISPLAY_FRAME:
+ display = event->display_remove.display;
+ d = grdev_display_get_userdata(display);
+ if (!d)
+ break;
+
+ session_dirty(s);
+ break;
+ }
+}
+
+static int session_redraw_fn(sd_event_source *src, void *userdata) {
+ Session *s = userdata;
+ Display *d;
+
+ LIST_FOREACH(displays_by_session, d, s->display_list)
+ display_render(d, s->active_ws);
+
+ grdev_session_commit(s->grdev);
+
+ return 0;
+}
+
+int session_new(Session **out, Manager *m, sysview_session *session) {
+ _cleanup_(session_freep) Session *s = NULL;
+ int r;
+
+ assert(out);
+ assert(m);
+ assert(session);
+
+ s = new0(Session, 1);
+ if (!s)
+ return -ENOMEM;
+
+ s->manager = m;
+ s->sysview = session;
+
+ r = grdev_session_new(&s->grdev,
+ m->grdev,
+ GRDEV_SESSION_MANAGED,
+ sysview_session_get_name(session),
+ session_grdev_fn,
+ s);
+ if (r < 0)
+ return r;
+
+ r = idev_session_new(&s->idev,
+ m->idev,
+ IDEV_SESSION_MANAGED,
+ sysview_session_get_name(session),
+ session_idev_fn,
+ s);
+ if (r < 0)
+ return r;
+
+ r = workspace_new(&s->my_ws, m);
+ if (r < 0)
+ return r;
+
+ s->active_ws = workspace_attach(s->my_ws, s);
+
+ r = sd_event_add_defer(m->event, &s->redraw_src, session_redraw_fn, s);
+ if (r < 0)
+ return r;
+
+ grdev_session_enable(s->grdev);
+ idev_session_enable(s->idev);
+
+ *out = s;
+ s = NULL;
+ return 0;
+}
+
+Session *session_free(Session *s) {
+ if (!s)
+ return NULL;
+
+ assert(!s->display_list);
+
+ sd_event_source_unref(s->redraw_src);
+
+ workspace_detach(s->active_ws, s);
+ workspace_unref(s->my_ws);
+
+ idev_session_free(s->idev);
+ grdev_session_free(s->grdev);
+ free(s);
+
+ return NULL;
+}
+
+void session_dirty(Session *s) {
+ int r;
+
+ assert(s);
+
+ r = sd_event_source_set_enabled(s->redraw_src, SD_EVENT_ONESHOT);
+ if (r < 0)
+ log_error("Cannot enable redraw-source: %s", strerror(-r));
+}
+
+void session_add_device(Session *s, sysview_device *device) {
+ unsigned int type;
+
+ assert(s);
+ assert(device);
+
+ type = sysview_device_get_type(device);
+ switch (type) {
+ case SYSVIEW_DEVICE_DRM:
+ grdev_session_add_drm(s->grdev, sysview_device_get_ud(device));
+ break;
+ case SYSVIEW_DEVICE_EVDEV:
+ idev_session_add_evdev(s->idev, sysview_device_get_ud(device));
+ break;
+ }
+}
+
+void session_remove_device(Session *s, sysview_device *device) {
+ unsigned int type;
+
+ assert(s);
+ assert(device);
+
+ type = sysview_device_get_type(device);
+ switch (type) {
+ case SYSVIEW_DEVICE_DRM:
+ grdev_session_remove_drm(s->grdev, sysview_device_get_ud(device));
+ break;
+ case SYSVIEW_DEVICE_EVDEV:
+ idev_session_remove_evdev(s->idev, sysview_device_get_ud(device));
+ break;
+ }
+}
+
+void session_refresh_device(Session *s, sysview_device *device, struct udev_device *ud) {
+ unsigned int type;
+
+ assert(s);
+ assert(device);
+
+ type = sysview_device_get_type(device);
+ switch (type) {
+ case SYSVIEW_DEVICE_DRM:
+ grdev_session_hotplug_drm(s->grdev, sysview_device_get_ud(device));
+ break;
+ }
+}