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systemd/0494-console-add-user-console-daemon.patch

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Update to latest git
2014-10-04 02:43:52 +00:00
From ce7b9f50c3fadbad22feeb28e4429ad9bee02bcc Mon Sep 17 00:00:00 2001
From: David Herrmann <dh.herrmann@gmail.com>
Date: Fri, 3 Oct 2014 15:58:44 +0200
Subject: [PATCH] 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.
---
.gitignore | 1 +
Makefile.am | 22 +++
src/console/Makefile | 1 +
src/console/consoled-display.c | 82 +++++++++
src/console/consoled-manager.c | 288 +++++++++++++++++++++++++++++++
src/console/consoled-session.c | 283 ++++++++++++++++++++++++++++++
src/console/consoled-terminal.c | 360 +++++++++++++++++++++++++++++++++++++++
src/console/consoled-workspace.c | 168 ++++++++++++++++++
src/console/consoled.c | 67 ++++++++
src/console/consoled.h | 170 ++++++++++++++++++
10 files changed, 1442 insertions(+)
create mode 120000 src/console/Makefile
create mode 100644 src/console/consoled-display.c
create mode 100644 src/console/consoled-manager.c
create mode 100644 src/console/consoled-session.c
create mode 100644 src/console/consoled-terminal.c
create mode 100644 src/console/consoled-workspace.c
create mode 100644 src/console/consoled.c
create mode 100644 src/console/consoled.h
diff --git a/.gitignore b/.gitignore
index cb1af8de5b..f119b574c7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -60,6 +60,7 @@
/systemd-cgls
/systemd-cgroups-agent
/systemd-cgtop
+/systemd-consoled
/systemd-coredump
/systemd-cryptsetup
/systemd-cryptsetup-generator
diff --git a/Makefile.am b/Makefile.am
index 503302851b..60011b7d98 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3020,6 +3020,9 @@ if ENABLE_TERMINAL
noinst_LTLIBRARIES += \
libsystemd-terminal.la
+bin_PROGRAMS += \
+ systemd-consoled
+
noinst_PROGRAMS += \
systemd-evcat \
systemd-modeset \
@@ -3068,6 +3071,25 @@ libsystemd_terminal_la_LIBADD = \
libsystemd-shared.la \
$(TERMINAL_LIBS)
+systemd_consoled_CFLAGS = \
+ $(AM_CFLAGS) \
+ $(TERMINAL_CFLAGS)
+
+systemd_consoled_SOURCES = \
+ src/console/consoled.h \
+ src/console/consoled.c \
+ src/console/consoled-display.c \
+ src/console/consoled-manager.c \
+ src/console/consoled-session.c \
+ src/console/consoled-terminal.c \
+ src/console/consoled-workspace.c
+
+systemd_consoled_LDADD = \
+ libsystemd-terminal.la \
+ libsystemd-internal.la \
+ libsystemd-shared.la \
+ $(TERMINAL_LIBS)
+
systemd_evcat_CFLAGS = \
$(AM_CFLAGS) \
$(TERMINAL_CFLAGS)
diff --git a/src/console/Makefile b/src/console/Makefile
new file mode 120000
index 0000000000..d0b0e8e008
--- /dev/null
+++ b/src/console/Makefile
@@ -0,0 +1 @@
+../Makefile
\ No newline at end of file
diff --git a/src/console/consoled-display.c b/src/console/consoled-display.c
new file mode 100644
index 0000000000..a30a2f1022
--- /dev/null
+++ b/src/console/consoled-display.c
@@ -0,0 +1,82 @@
+/*-*- 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 <stdlib.h>
+#include "consoled.h"
+#include "grdev.h"
+#include "list.h"
+#include "macro.h"
+#include "util.h"
+
+int display_new(Display **out, Session *s, grdev_display *display) {
+ _cleanup_(display_freep) Display *d = NULL;
+
+ assert(out);
+ assert(s);
+ assert(display);
+
+ d = new0(Display, 1);
+ if (!d)
+ return -ENOMEM;
+
+ d->session = s;
+ d->grdev = display;
+ d->width = grdev_display_get_width(display);
+ d->height = grdev_display_get_height(display);
+ LIST_PREPEND(displays_by_session, d->session->display_list, d);
+
+ grdev_display_enable(display);
+
+ *out = d;
+ d = NULL;
+ return 0;
+}
+
+Display *display_free(Display *d) {
+ if (!d)
+ return NULL;
+
+ LIST_REMOVE(displays_by_session, d->session->display_list, d);
+ free(d);
+
+ return NULL;
+}
+
+void display_refresh(Display *d) {
+ assert(d);
+
+ d->width = grdev_display_get_width(d->grdev);
+ d->height = grdev_display_get_height(d->grdev);
+}
+
+void display_render(Display *d, Workspace *w) {
+ const grdev_display_target *target;
+
+ assert(d);
+ assert(w);
+
+ GRDEV_DISPLAY_FOREACH_TARGET(d->grdev, target) {
+ if (workspace_draw(w, target))
+ grdev_display_flip_target(d->grdev, target);
+ }
+}
diff --git a/src/console/consoled-manager.c b/src/console/consoled-manager.c
new file mode 100644
index 0000000000..8f3823fe46
--- /dev/null
+++ b/src/console/consoled-manager.c
@@ -0,0 +1,288 @@
+/*-*- 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 <libudev.h>
+#include <stdlib.h>
+#include <string.h>
+#include "consoled.h"
+#include "grdev.h"
+#include "idev.h"
+#include "log.h"
+#include "sd-bus.h"
+#include "sd-daemon.h"
+#include "sd-event.h"
+#include "sd-login.h"
+#include "sysview.h"
+#include "unifont.h"
+#include "util.h"
+
+int manager_new(Manager **out) {
+ _cleanup_(manager_freep) Manager *m = NULL;
+ int r;
+
+ assert(out);
+
+ m = new0(Manager, 1);
+ if (!m)
+ return -ENOMEM;
+
+ r = sd_event_default(&m->event);
+ if (r < 0)
+ return r;
+
+ r = sd_event_set_watchdog(m->event, true);
+ if (r < 0)
+ return r;
+
+ r = sigprocmask_many(SIG_BLOCK, SIGTERM, SIGQUIT, SIGINT, SIGWINCH, SIGCHLD, -1);
+ if (r < 0)
+ return r;
+
+ r = sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
+ if (r < 0)
+ return r;
+
+ r = sd_event_add_signal(m->event, NULL, SIGQUIT, NULL, NULL);
+ if (r < 0)
+ return r;
+
+ r = sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_open_system(&m->sysbus);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_attach_event(m->sysbus, m->event, SD_EVENT_PRIORITY_NORMAL);
+ if (r < 0)
+ return r;
+
+ r = unifont_new(&m->uf);
+ if (r < 0)
+ return r;
+
+ r = sysview_context_new(&m->sysview,
+ SYSVIEW_CONTEXT_SCAN_LOGIND |
+ SYSVIEW_CONTEXT_SCAN_EVDEV |
+ SYSVIEW_CONTEXT_SCAN_DRM,
+ m->event,
+ m->sysbus,
+ NULL);
+ if (r < 0)
+ return r;
+
+ r = grdev_context_new(&m->grdev, m->event, m->sysbus);
+ if (r < 0)
+ return r;
+
+ r = idev_context_new(&m->idev, m->event, m->sysbus);
+ if (r < 0)
+ return r;
+
+ *out = m;
+ m = NULL;
+ return 0;
+}
+
+Manager *manager_free(Manager *m) {
+ if (!m)
+ return NULL;
+
+ assert(!m->workspace_list);
+
+ m->idev = idev_context_unref(m->idev);
+ m->grdev = grdev_context_unref(m->grdev);
+ m->sysview = sysview_context_free(m->sysview);
+ m->uf = unifont_unref(m->uf);
+ m->sysbus = sd_bus_unref(m->sysbus);
+ m->event = sd_event_unref(m->event);
+ free(m);
+
+ return NULL;
+}
+
+static int manager_sysview_session_filter(Manager *m, sysview_event *event) {
+ const char *sid = event->session_filter.id;
+ _cleanup_free_ char *desktop = NULL;
+ int r;
+
+ assert(sid);
+
+ r = sd_session_get_desktop(sid, &desktop);
+ if (r < 0)
+ return 0;
+
+ return streq(desktop, "SYSTEMD-CONSOLE");
+}
+
+static int manager_sysview_session_add(Manager *m, sysview_event *event) {
+ sysview_session *session = event->session_add.session;
+ Session *s;
+ int r;
+
+ r = sysview_session_take_control(session);
+ if (r < 0) {
+ log_error("Cannot request session control on '%s': %s",
+ sysview_session_get_name(session), strerror(-r));
+ return r;
+ }
+
+ r = session_new(&s, m, session);
+ if (r < 0) {
+ log_error("Cannot create session on '%s': %s",
+ sysview_session_get_name(session), strerror(-r));
+ sysview_session_release_control(session);
+ return r;
+ }
+
+ sysview_session_set_userdata(session, s);
+
+ return 0;
+}
+
+static int manager_sysview_session_remove(Manager *m, sysview_event *event) {
+ sysview_session *session = event->session_remove.session;
+ Session *s;
+
+ s = sysview_session_get_userdata(session);
+ if (!s)
+ return 0;
+
+ session_free(s);
+
+ return 0;
+}
+
+static int manager_sysview_session_attach(Manager *m, sysview_event *event) {
+ sysview_session *session = event->session_attach.session;
+ sysview_device *device = event->session_attach.device;
+ Session *s;
+
+ s = sysview_session_get_userdata(session);
+ if (!s)
+ return 0;
+
+ session_add_device(s, device);
+
+ return 0;
+}
+
+static int manager_sysview_session_detach(Manager *m, sysview_event *event) {
+ sysview_session *session = event->session_detach.session;
+ sysview_device *device = event->session_detach.device;
+ Session *s;
+
+ s = sysview_session_get_userdata(session);
+ if (!s)
+ return 0;
+
+ session_remove_device(s, device);
+
+ return 0;
+}
+
+static int manager_sysview_session_refresh(Manager *m, sysview_event *event) {
+ sysview_session *session = event->session_refresh.session;
+ sysview_device *device = event->session_refresh.device;
+ struct udev_device *ud = event->session_refresh.ud;
+ Session *s;
+
+ s = sysview_session_get_userdata(session);
+ if (!s)
+ return 0;
+
+ session_refresh_device(s, device, ud);
+
+ return 0;
+}
+
+static int manager_sysview_session_control(Manager *m, sysview_event *event) {
+ sysview_session *session = event->session_control.session;
+ int error = event->session_control.error;
+ Session *s;
+
+ s = sysview_session_get_userdata(session);
+ if (!s)
+ return 0;
+
+ if (error < 0) {
+ log_error("Cannot take session control on '%s': %s",
+ sysview_session_get_name(session), strerror(-error));
+ session_free(s);
+ sysview_session_set_userdata(session, NULL);
+ return -error;
+ }
+
+ return 0;
+}
+
+static int manager_sysview_fn(sysview_context *sysview, void *userdata, sysview_event *event) {
+ Manager *m = userdata;
+ int r;
+
+ assert(m);
+
+ switch (event->type) {
+ case SYSVIEW_EVENT_SESSION_FILTER:
+ r = manager_sysview_session_filter(m, event);
+ break;
+ case SYSVIEW_EVENT_SESSION_ADD:
+ r = manager_sysview_session_add(m, event);
+ break;
+ case SYSVIEW_EVENT_SESSION_REMOVE:
+ r = manager_sysview_session_remove(m, event);
+ break;
+ case SYSVIEW_EVENT_SESSION_ATTACH:
+ r = manager_sysview_session_attach(m, event);
+ break;
+ case SYSVIEW_EVENT_SESSION_DETACH:
+ r = manager_sysview_session_detach(m, event);
+ break;
+ case SYSVIEW_EVENT_SESSION_REFRESH:
+ r = manager_sysview_session_refresh(m, event);
+ break;
+ case SYSVIEW_EVENT_SESSION_CONTROL:
+ r = manager_sysview_session_control(m, event);
+ break;
+ default:
+ r = 0;
+ break;
+ }
+
+ return r;
+}
+
+int manager_run(Manager *m) {
+ int r;
+
+ assert(m);
+
+ r = sysview_context_start(m->sysview, manager_sysview_fn, m);
+ if (r < 0)
+ return r;
+
+ r = sd_event_loop(m->event);
+
+ sysview_context_stop(m->sysview);
+ return r;
+}
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;
+ }
+}
diff --git a/src/console/consoled-terminal.c b/src/console/consoled-terminal.c
new file mode 100644
index 0000000000..d091579aa5
--- /dev/null
+++ b/src/console/consoled-terminal.c
@@ -0,0 +1,360 @@
+/*-*- 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 <stdlib.h>
+#include "consoled.h"
+#include "list.h"
+#include "macro.h"
+#include "util.h"
+
+static int terminal_write_fn(term_screen *screen, void *userdata, const void *buf, size_t size) {
+ Terminal *t = userdata;
+ int r;
+
+ if (t->pty) {
+ r = pty_write(t->pty, buf, size);
+ if (r < 0)
+ return log_oom();
+ }
+
+ return 0;
+}
+
+static int terminal_pty_fn(Pty *pty, void *userdata, unsigned int event, const void *ptr, size_t size) {
+ Terminal *t = userdata;
+ int r;
+
+ switch (event) {
+ case PTY_CHILD:
+ log_debug("PTY child exited");
+ t->pty = pty_unref(t->pty);
+ break;
+ case PTY_DATA:
+ r = term_screen_feed_text(t->screen, ptr, size);
+ if (r < 0)
+ log_error("Cannot update screen state: %s", strerror(-r));
+
+ workspace_dirty(t->workspace);
+ break;
+ }
+
+ return 0;
+}
+
+int terminal_new(Terminal **out, Workspace *w) {
+ _cleanup_(terminal_freep) Terminal *t = NULL;
+ int r;
+
+ assert(w);
+
+ t = new0(Terminal, 1);
+ if (!t)
+ return -ENOMEM;
+
+ t->workspace = w;
+ LIST_PREPEND(terminals_by_workspace, w->terminal_list, t);
+
+ r = term_parser_new(&t->parser, true);
+ if (r < 0)
+ return r;
+
+ r = term_screen_new(&t->screen, terminal_write_fn, t, NULL, NULL);
+ if (r < 0)
+ return r;
+
+ r = term_screen_set_answerback(t->screen, "systemd-console");
+ if (r < 0)
+ return r;
+
+ if (out)
+ *out = t;
+ t = NULL;
+ return 0;
+}
+
+Terminal *terminal_free(Terminal *t) {
+ if (!t)
+ return NULL;
+
+ assert(t->workspace);
+
+ if (t->pty) {
+ (void)pty_signal(t->pty, SIGHUP);
+ pty_close(t->pty);
+ pty_unref(t->pty);
+ }
+ term_screen_unref(t->screen);
+ term_parser_free(t->parser);
+ LIST_REMOVE(terminals_by_workspace, t->workspace->terminal_list, t);
+ free(t);
+
+ return NULL;
+}
+
+void terminal_resize(Terminal *t) {
+ uint32_t width, height, fw, fh;
+ int r;
+
+ assert(t);
+
+ width = t->workspace->width;
+ height = t->workspace->height;
+ fw = unifont_get_width(t->workspace->manager->uf);
+ fh = unifont_get_height(t->workspace->manager->uf);
+
+ width = (fw > 0) ? width / fw : 0;
+ height = (fh > 0) ? height / fh : 0;
+
+ if (t->pty) {
+ r = pty_resize(t->pty, width, height);
+ if (r < 0)
+ log_error("Cannot resize pty: %s", strerror(-r));
+ }
+
+ r = term_screen_resize(t->screen, width, height);
+ if (r < 0)
+ log_error("Cannot resize screen: %s", strerror(-r));
+}
+
+void terminal_run(Terminal *t) {
+ pid_t pid;
+
+ assert(t);
+
+ if (t->pty)
+ return;
+
+ pid = pty_fork(&t->pty,
+ t->workspace->manager->event,
+ terminal_pty_fn,
+ t,
+ term_screen_get_width(t->screen),
+ term_screen_get_height(t->screen));
+ if (pid < 0) {
+ log_error("Cannot fork PTY: %s", strerror(-pid));
+ return;
+ } else if (pid == 0) {
+ /* child */
+
+ char **argv = (char*[]){
+ (char*)getenv("SHELL") ? : (char*)_PATH_BSHELL,
+ NULL
+ };
+
+ setenv("TERM", "xterm-256color", 1);
+ setenv("COLORTERM", "systemd-console", 1);
+
+ execve(argv[0], argv, environ);
+ log_error("Cannot exec %s (%d): %m", argv[0], -errno);
+ _exit(1);
+ }
+}
+
+static void terminal_feed_keyboard(Terminal *t, idev_data *data) {
+ idev_data_keyboard *kdata = &data->keyboard;
+ int r;
+
+ if (!data->resync && (kdata->value == 1 || kdata->value == 2)) {
+ assert_cc(TERM_KBDMOD_CNT == (int)IDEV_KBDMOD_CNT);
+ assert_cc(TERM_KBDMOD_IDX_SHIFT == (int)IDEV_KBDMOD_IDX_SHIFT &&
+ TERM_KBDMOD_IDX_CTRL == (int)IDEV_KBDMOD_IDX_CTRL &&
+ TERM_KBDMOD_IDX_ALT == (int)IDEV_KBDMOD_IDX_ALT &&
+ TERM_KBDMOD_IDX_LINUX == (int)IDEV_KBDMOD_IDX_LINUX &&
+ TERM_KBDMOD_IDX_CAPS == (int)IDEV_KBDMOD_IDX_CAPS);
+
+ r = term_screen_feed_keyboard(t->screen,
+ kdata->keysyms,
+ kdata->n_syms,
+ kdata->ascii,
+ kdata->codepoints,
+ kdata->mods);
+ if (r < 0)
+ log_error("Cannot feed keyboard data to screen: %s",
+ strerror(-r));
+ }
+}
+
+void terminal_feed(Terminal *t, idev_data *data) {
+ switch (data->type) {
+ case IDEV_DATA_KEYBOARD:
+ terminal_feed_keyboard(t, data);
+ break;
+ }
+}
+
+static void terminal_fill(uint8_t *dst,
+ uint32_t width,
+ uint32_t height,
+ uint32_t stride,
+ uint32_t value) {
+ uint32_t i, j, *px;
+
+ for (j = 0; j < height; ++j) {
+ px = (uint32_t*)dst;
+
+ for (i = 0; i < width; ++i)
+ *px++ = value;
+
+ dst += stride;
+ }
+}
+
+static void terminal_blend(uint8_t *dst,
+ uint32_t width,
+ uint32_t height,
+ uint32_t dst_stride,
+ const uint8_t *src,
+ uint32_t src_stride,
+ uint32_t fg,
+ uint32_t bg) {
+ uint32_t i, j, *px;
+
+ for (j = 0; j < height; ++j) {
+ px = (uint32_t*)dst;
+
+ for (i = 0; i < width; ++i) {
+ if (!src || src[i / 8] & (1 << (7 - i % 8)))
+ *px = fg;
+ else
+ *px = bg;
+
+ ++px;
+ }
+
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+typedef struct {
+ const grdev_display_target *target;
+ unifont *uf;
+ uint32_t cell_width;
+ uint32_t cell_height;
+ bool dirty;
+} TerminalDrawContext;
+
+static int terminal_draw_cell(term_screen *screen,
+ void *userdata,
+ unsigned int x,
+ unsigned int y,
+ const term_attr *attr,
+ const uint32_t *ch,
+ size_t n_ch,
+ unsigned int ch_width) {
+ TerminalDrawContext *ctx = userdata;
+ const grdev_display_target *target = ctx->target;
+ grdev_fb *fb = target->back;
+ uint32_t xpos, ypos, width, height;
+ uint32_t fg, bg;
+ unifont_glyph g;
+ uint8_t *dst;
+ int r;
+
+ if (n_ch > 0) {
+ r = unifont_lookup(ctx->uf, &g, *ch);
+ if (r < 0)
+ r = unifont_lookup(ctx->uf, &g, 0xfffd);
+ if (r < 0)
+ unifont_fallback(&g);
+ }
+
+ xpos = x * ctx->cell_width;
+ ypos = y * ctx->cell_height;
+
+ if (xpos >= fb->width || ypos >= fb->height)
+ return 0;
+
+ width = MIN(fb->width - xpos, ctx->cell_width * ch_width);
+ height = MIN(fb->height - ypos, ctx->cell_height);
+
+ term_attr_to_argb32(attr, &fg, &bg, NULL);
+
+ ctx->dirty = true;
+
+ dst = fb->maps[0];
+ dst += fb->strides[0] * ypos + sizeof(uint32_t) * xpos;
+
+ if (n_ch < 1) {
+ terminal_fill(dst,
+ width,
+ height,
+ fb->strides[0],
+ bg);
+ } else {
+ if (width > g.width)
+ terminal_fill(dst + sizeof(uint32_t) * g.width,
+ width - g.width,
+ height,
+ fb->strides[0],
+ bg);
+ if (height > g.height)
+ terminal_fill(dst + fb->strides[0] * g.height,
+ width,
+ height - g.height,
+ fb->strides[0],
+ bg);
+
+ terminal_blend(dst,
+ width,
+ height,
+ fb->strides[0],
+ g.data,
+ g.stride,
+ fg,
+ bg);
+ }
+
+ return 0;
+}
+
+bool terminal_draw(Terminal *t, const grdev_display_target *target) {
+ TerminalDrawContext ctx = { };
+ uint64_t age;
+
+ assert(t);
+ assert(target);
+
+ /* start up terminal on first frame */
+ terminal_run(t);
+
+ ctx.target = target;
+ ctx.uf = t->workspace->manager->uf;
+ ctx.cell_width = unifont_get_width(ctx.uf);
+ ctx.cell_height = unifont_get_height(ctx.uf);
+ ctx.dirty = false;
+
+ if (target->front) {
+ /* if the frontbuffer is new enough, no reason to redraw */
+ age = term_screen_get_age(t->screen);
+ if (age != 0 && age <= target->front->data.u64)
+ return false;
+ } else {
+ /* force flip if no frontbuffer is set, yet */
+ ctx.dirty = true;
+ }
+
+ term_screen_draw(t->screen, terminal_draw_cell, &ctx, &target->back->data.u64);
+
+ return ctx.dirty;
+}
diff --git a/src/console/consoled-workspace.c b/src/console/consoled-workspace.c
new file mode 100644
index 0000000000..56344ef2cf
--- /dev/null
+++ b/src/console/consoled-workspace.c
@@ -0,0 +1,168 @@
+/*-*- 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 <stdlib.h>
+#include "consoled.h"
+#include "grdev.h"
+#include "idev.h"
+#include "list.h"
+#include "macro.h"
+#include "util.h"
+
+int workspace_new(Workspace **out, Manager *m) {
+ _cleanup_(workspace_unrefp) Workspace *w = NULL;
+ int r;
+
+ assert(out);
+
+ w = new0(Workspace, 1);
+ if (!w)
+ return -ENOMEM;
+
+ w->ref = 1;
+ w->manager = m;
+ LIST_PREPEND(workspaces_by_manager, m->workspace_list, w);
+
+ r = terminal_new(&w->current, w);
+ if (r < 0)
+ return r;
+
+ *out = w;
+ w = NULL;
+ return 0;
+}
+
+static void workspace_cleanup(Workspace *w) {
+ Terminal *t;
+
+ assert(w);
+ assert(w->ref == 0);
+ assert(w->manager);
+ assert(!w->session_list);
+
+ w->current = NULL;
+ while ((t = w->terminal_list))
+ terminal_free(t);
+
+ LIST_REMOVE(workspaces_by_manager, w->manager->workspace_list, w);
+ free(w);
+}
+
+Workspace *workspace_ref(Workspace *w) {
+ assert(w);
+
+ ++w->ref;
+ return w;
+}
+
+Workspace *workspace_unref(Workspace *w) {
+ if (!w)
+ return NULL;
+
+ assert(w->ref > 0);
+
+ if (--w->ref == 0)
+ workspace_cleanup(w);
+
+ return NULL;
+}
+
+Workspace *workspace_attach(Workspace *w, Session *s) {
+ assert(w);
+ assert(s);
+
+ LIST_PREPEND(sessions_by_workspace, w->session_list, s);
+ workspace_refresh(w);
+ return workspace_ref(w);
+}
+
+Workspace *workspace_detach(Workspace *w, Session *s) {
+ assert(w);
+ assert(s);
+ assert(s->active_ws == w);
+
+ LIST_REMOVE(sessions_by_workspace, w->session_list, s);
+ workspace_refresh(w);
+ return workspace_unref(w);
+}
+
+void workspace_refresh(Workspace *w) {
+ uint32_t width, height;
+ Terminal *t;
+ Session *s;
+ Display *d;
+
+ assert(w);
+
+ width = 0;
+ height = 0;
+
+ /* find out minimum dimension of all attached displays */
+ LIST_FOREACH(sessions_by_workspace, s, w->session_list) {
+ LIST_FOREACH(displays_by_session, d, s->display_list) {
+ assert(d->width > 0 && d->height > 0);
+
+ if (width == 0 || d->width < width)
+ width = d->width;
+ if (height == 0 || d->height < height)
+ height = d->height;
+ }
+ }
+
+ /* either both are zero, or none is zero */
+ assert(!(!width ^ !height));
+
+ /* update terminal-sizes if dimensions changed */
+ if (w->width != width || w->height != height) {
+ w->width = width;
+ w->height = height;
+
+ LIST_FOREACH(terminals_by_workspace, t, w->terminal_list)
+ terminal_resize(t);
+
+ workspace_dirty(w);
+ }
+}
+
+void workspace_dirty(Workspace *w) {
+ Session *s;
+
+ assert(w);
+
+ LIST_FOREACH(sessions_by_workspace, s, w->session_list)
+ session_dirty(s);
+}
+
+void workspace_feed(Workspace *w, idev_data *data) {
+ assert(w);
+ assert(data);
+
+ terminal_feed(w->current, data);
+}
+
+bool workspace_draw(Workspace *w, const grdev_display_target *target) {
+ assert(w);
+ assert(target);
+
+ return terminal_draw(w->current, target);
+}
diff --git a/src/console/consoled.c b/src/console/consoled.c
new file mode 100644
index 0000000000..b0c9eda1ac
--- /dev/null
+++ b/src/console/consoled.c
@@ -0,0 +1,67 @@
+/*-*- 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 <stdlib.h>
+#include <string.h>
+#include "consoled.h"
+#include "log.h"
+#include "sd-daemon.h"
+#include "util.h"
+
+int main(int argc, char *argv[]) {
+ _cleanup_(manager_freep) Manager *m = NULL;
+ int r;
+
+ log_set_target(LOG_TARGET_AUTO);
+ log_parse_environment();
+ log_open();
+
+ umask(0022);
+
+ if (argc != 1) {
+ log_error("This program takes no arguments.");
+ r = -EINVAL;
+ goto out;
+ }
+
+ r = manager_new(&m);
+ if (r < 0) {
+ log_error("Could not create manager: %s", strerror(-r));
+ goto out;
+ }
+
+ sd_notify(false,
+ "READY=1\n"
+ "STATUS=Processing requests...");
+
+ r = manager_run(m);
+ if (r < 0) {
+ log_error("Cannot run manager: %s", strerror(-r));
+ goto out;
+ }
+
+out:
+ sd_notify(false,
+ "STATUS=Shutting down...");
+
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}
diff --git a/src/console/consoled.h b/src/console/consoled.h
new file mode 100644
index 0000000000..f8a3df4487
--- /dev/null
+++ b/src/console/consoled.h
@@ -0,0 +1,170 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ 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 "grdev.h"
+#include "hashmap.h"
+#include "idev.h"
+#include "list.h"
+#include "macro.h"
+#include "pty.h"
+#include "sd-bus.h"
+#include "sd-event.h"
+#include "sysview.h"
+#include "term.h"
+#include "unifont.h"
+#include "util.h"
+
+typedef struct Manager Manager;
+typedef struct Session Session;
+typedef struct Display Display;
+typedef struct Workspace Workspace;
+typedef struct Terminal Terminal;
+
+/*
+ * Terminals
+ */
+
+struct Terminal {
+ Workspace *workspace;
+ LIST_FIELDS(Terminal, terminals_by_workspace);
+
+ term_utf8 utf8;
+ term_parser *parser;
+ term_screen *screen;
+ Pty *pty;
+};
+
+int terminal_new(Terminal **out, Workspace *w);
+Terminal *terminal_free(Terminal *t);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Terminal*, terminal_free);
+
+void terminal_resize(Terminal *t);
+void terminal_run(Terminal *t);
+void terminal_feed(Terminal *t, idev_data *data);
+bool terminal_draw(Terminal *t, const grdev_display_target *target);
+
+/*
+ * Workspaces
+ */
+
+struct Workspace {
+ unsigned long ref;
+ Manager *manager;
+ LIST_FIELDS(Workspace, workspaces_by_manager);
+
+ LIST_HEAD(Terminal, terminal_list);
+ Terminal *current;
+
+ LIST_HEAD(Session, session_list);
+ uint32_t width;
+ uint32_t height;
+};
+
+int workspace_new(Workspace **out, Manager *m);
+Workspace *workspace_ref(Workspace *w);
+Workspace *workspace_unref(Workspace *w);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Workspace*, workspace_unref);
+
+Workspace *workspace_attach(Workspace *w, Session *s);
+Workspace *workspace_detach(Workspace *w, Session *s);
+void workspace_refresh(Workspace *w);
+
+void workspace_dirty(Workspace *w);
+void workspace_feed(Workspace *w, idev_data *data);
+bool workspace_draw(Workspace *w, const grdev_display_target *target);
+
+/*
+ * Displays
+ */
+
+struct Display {
+ Session *session;
+ LIST_FIELDS(Display, displays_by_session);
+ grdev_display *grdev;
+ uint32_t width;
+ uint32_t height;
+};
+
+int display_new(Display **out, Session *s, grdev_display *grdev);
+Display *display_free(Display *d);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Display*, display_free);
+
+void display_refresh(Display *d);
+void display_render(Display *d, Workspace *w);
+
+/*
+ * Sessions
+ */
+
+struct Session {
+ Manager *manager;
+ sysview_session *sysview;
+ grdev_session *grdev;
+ idev_session *idev;
+
+ LIST_FIELDS(Session, sessions_by_workspace);
+ Workspace *my_ws;
+ Workspace *active_ws;
+
+ LIST_HEAD(Display, display_list);
+ sd_event_source *redraw_src;
+};
+
+int session_new(Session **out, Manager *m, sysview_session *session);
+Session *session_free(Session *s);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Session*, session_free);
+
+void session_dirty(Session *s);
+
+void session_add_device(Session *s, sysview_device *device);
+void session_remove_device(Session *s, sysview_device *device);
+void session_refresh_device(Session *s, sysview_device *device, struct udev_device *ud);
+
+/*
+ * Managers
+ */
+
+struct Manager {
+ sd_event *event;
+ sd_bus *sysbus;
+ unifont *uf;
+ sysview_context *sysview;
+ grdev_context *grdev;
+ idev_context *idev;
+ LIST_HEAD(Workspace, workspace_list);
+};
+
+int manager_new(Manager **out);
+Manager *manager_free(Manager *m);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
+
+int manager_run(Manager *m);
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