From 72dea06d7952e3ce8dd8057f7106186da4fa2678 Mon Sep 17 00:00:00 2001
From: "Jasper St. Pierre" <jstpierre@mecheye.net>
Date: Wed, 23 Sep 2015 10:46:47 -0700
Subject: [PATCH] launcher: Split out launcher implementations into three
distinct ones
We now have a launcher interface and distinct implementations for
logind, weston-launch, and direct DRM, each in their own files.
This helps up clean up the spaghetti code into something that's
hopefully a bit more understood. There should be no functional
changes here.
Reviewed-by: Derek Foreman <derekf@osg.samsung.com>
update: Dropped redundant free() in weston_launcher_destroy()
---
Makefile.am | 7 +-
src/launcher-direct.c | 315 +++++++++++++++++++++++++
src/launcher-impl.h | 45 ++++
src/launcher-logind.c | 154 +++++++-----
src/launcher-logind.h | 123 ----------
src/launcher-util.c | 440 +++--------------------------------
src/launcher-weston-launch.c | 302 ++++++++++++++++++++++++
7 files changed, 795 insertions(+), 591 deletions(-)
create mode 100644 src/launcher-direct.c
create mode 100644 src/launcher-impl.h
delete mode 100644 src/launcher-logind.h
create mode 100644 src/launcher-weston-launch.c
diff --git a/Makefile.am b/Makefile.am
index 79a442cdb..94a824be0 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -127,9 +127,11 @@ noinst_LTLIBRARIES += \
libsession-helper.la
libsession_helper_la_SOURCES = \
- src/weston-launch.h \
src/launcher-util.c \
- src/launcher-util.h
+ src/launcher-util.h \
+ src/weston-launch.h \
+ src/launcher-weston-launch.c \
+ src/launcher-direct.c
libsession_helper_la_CFLAGS = $(AM_CFLAGS) $(LIBDRM_CFLAGS) $(PIXMAN_CFLAGS) $(COMPOSITOR_CFLAGS)
libsession_helper_la_LIBADD = $(LIBDRM_LIBS)
@@ -138,7 +140,6 @@ if HAVE_SYSTEMD_LOGIN
libsession_helper_la_SOURCES += \
src/dbus.h \
src/dbus.c \
- src/launcher-logind.h \
src/launcher-logind.c
libsession_helper_la_CFLAGS += $(SYSTEMD_LOGIN_CFLAGS) $(DBUS_CFLAGS)
libsession_helper_la_LIBADD += $(SYSTEMD_LOGIN_LIBS) $(DBUS_LIBS)
diff --git a/src/launcher-direct.c b/src/launcher-direct.c
new file mode 100644
index 000000000..29d9c28be
--- /dev/null
+++ b/src/launcher-direct.c
@@ -0,0 +1,315 @@
+/*
+ * Copyright © 2012 Benjamin Franzke
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission. The copyright holders make
+ * no representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "config.h"
+
+#include "compositor.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <linux/vt.h>
+#include <linux/kd.h>
+#include <linux/major.h>
+
+#include "launcher-impl.h"
+
+#define DRM_MAJOR 226
+
+#ifndef KDSKBMUTE
+#define KDSKBMUTE 0x4B51
+#endif
+
+#ifdef HAVE_LIBDRM
+
+#include <xf86drm.h>
+
+static inline int
+is_drm_master(int drm_fd)
+{
+ drm_magic_t magic;
+
+ return drmGetMagic(drm_fd, &magic) == 0 &&
+ drmAuthMagic(drm_fd, magic) == 0;
+}
+
+#else
+
+static inline int
+drmDropMaster(int drm_fd)
+{
+ return 0;
+}
+
+static inline int
+drmSetMaster(int drm_fd)
+{
+ return 0;
+}
+
+static inline int
+is_drm_master(int drm_fd)
+{
+ return 0;
+}
+
+#endif
+
+struct launcher_direct {
+ struct weston_launcher base;
+ struct weston_compositor *compositor;
+ int kb_mode, tty, drm_fd;
+ struct wl_event_source *vt_source;
+};
+
+static int
+vt_handler(int signal_number, void *data)
+{
+ struct launcher_direct *launcher = data;
+ struct weston_compositor *compositor = launcher->compositor;
+
+ if (compositor->session_active) {
+ compositor->session_active = 0;
+ wl_signal_emit(&compositor->session_signal, compositor);
+ drmDropMaster(launcher->drm_fd);
+ ioctl(launcher->tty, VT_RELDISP, 1);
+ } else {
+ ioctl(launcher->tty, VT_RELDISP, VT_ACKACQ);
+ drmSetMaster(launcher->drm_fd);
+ compositor->session_active = 1;
+ wl_signal_emit(&compositor->session_signal, compositor);
+ }
+
+ return 1;
+}
+
+static int
+setup_tty(struct launcher_direct *launcher, int tty)
+{
+ struct wl_event_loop *loop;
+ struct vt_mode mode = { 0 };
+ struct stat buf;
+ char tty_device[32] ="<stdin>";
+ int ret, kd_mode;
+
+ if (tty == 0) {
+ launcher->tty = dup(tty);
+ if (launcher->tty == -1) {
+ weston_log("couldn't dup stdin: %m\n");
+ return -1;
+ }
+ } else {
+ snprintf(tty_device, sizeof tty_device, "/dev/tty%d", tty);
+ launcher->tty = open(tty_device, O_RDWR | O_CLOEXEC);
+ if (launcher->tty == -1) {
+ weston_log("couldn't open tty %s: %m\n", tty_device);
+ return -1;
+ }
+ }
+
+ if (fstat(launcher->tty, &buf) == -1 ||
+ major(buf.st_rdev) != TTY_MAJOR || minor(buf.st_rdev) == 0) {
+ weston_log("%s not a vt\n", tty_device);
+ weston_log("if running weston from ssh, "
+ "use --tty to specify a tty\n");
+ goto err_close;
+ }
+
+ ret = ioctl(launcher->tty, KDGETMODE, &kd_mode);
+ if (ret) {
+ weston_log("failed to get VT mode: %m\n");
+ return -1;
+ }
+ if (kd_mode != KD_TEXT) {
+ weston_log("%s is already in graphics mode, "
+ "is another display server running?\n", tty_device);
+ goto err_close;
+ }
+
+ ioctl(launcher->tty, VT_ACTIVATE, minor(buf.st_rdev));
+ ioctl(launcher->tty, VT_WAITACTIVE, minor(buf.st_rdev));
+
+ if (ioctl(launcher->tty, KDGKBMODE, &launcher->kb_mode)) {
+ weston_log("failed to read keyboard mode: %m\n");
+ goto err_close;
+ }
+
+ if (ioctl(launcher->tty, KDSKBMUTE, 1) &&
+ ioctl(launcher->tty, KDSKBMODE, K_OFF)) {
+ weston_log("failed to set K_OFF keyboard mode: %m\n");
+ goto err_close;
+ }
+
+ ret = ioctl(launcher->tty, KDSETMODE, KD_GRAPHICS);
+ if (ret) {
+ weston_log("failed to set KD_GRAPHICS mode on tty: %m\n");
+ goto err_close;
+ }
+
+ /*
+ * SIGRTMIN is used as global VT-acquire+release signal. Note that
+ * SIGRT* must be tested on runtime, as their exact values are not
+ * known at compile-time. POSIX requires 32 of them to be available.
+ */
+ if (SIGRTMIN > SIGRTMAX) {
+ weston_log("not enough RT signals available: %u-%u\n",
+ SIGRTMIN, SIGRTMAX);
+ ret = -EINVAL;
+ goto err_close;
+ }
+
+ mode.mode = VT_PROCESS;
+ mode.relsig = SIGRTMIN;
+ mode.acqsig = SIGRTMIN;
+ if (ioctl(launcher->tty, VT_SETMODE, &mode) < 0) {
+ weston_log("failed to take control of vt handling\n");
+ goto err_close;
+ }
+
+ loop = wl_display_get_event_loop(launcher->compositor->wl_display);
+ launcher->vt_source =
+ wl_event_loop_add_signal(loop, SIGRTMIN, vt_handler, launcher);
+ if (!launcher->vt_source)
+ goto err_close;
+
+ return 0;
+
+ err_close:
+ close(launcher->tty);
+ return -1;
+}
+
+static int
+launcher_direct_open(struct weston_launcher *launcher_base, const char *path, int flags)
+{
+ struct launcher_direct *launcher = wl_container_of(launcher_base, launcher, base);
+ struct stat s;
+ int fd;
+
+ fd = open(path, flags | O_CLOEXEC);
+ if (fd == -1)
+ return -1;
+
+ if (fstat(fd, &s) == -1) {
+ close(fd);
+ return -1;
+ }
+
+ if (major(s.st_rdev) == DRM_MAJOR) {
+ launcher->drm_fd = fd;
+ if (!is_drm_master(fd)) {
+ weston_log("drm fd not master\n");
+ close(fd);
+ return -1;
+ }
+ }
+
+ return fd;
+}
+
+static void
+launcher_direct_close(struct weston_launcher *launcher_base, int fd)
+{
+ close(fd);
+}
+
+static void
+launcher_direct_restore(struct weston_launcher *launcher_base)
+{
+ struct launcher_direct *launcher = wl_container_of(launcher_base, launcher, base);
+ struct vt_mode mode = { 0 };
+
+ if (ioctl(launcher->tty, KDSKBMUTE, 0) &&
+ ioctl(launcher->tty, KDSKBMODE, launcher->kb_mode))
+ weston_log("failed to restore kb mode: %m\n");
+
+ if (ioctl(launcher->tty, KDSETMODE, KD_TEXT))
+ weston_log("failed to set KD_TEXT mode on tty: %m\n");
+
+ /* We have to drop master before we switch the VT back in
+ * VT_AUTO, so we don't risk switching to a VT with another
+ * display server, that will then fail to set drm master. */
+ drmDropMaster(launcher->drm_fd);
+
+ mode.mode = VT_AUTO;
+ if (ioctl(launcher->tty, VT_SETMODE, &mode) < 0)
+ weston_log("could not reset vt handling\n");
+}
+
+static int
+launcher_direct_activate_vt(struct weston_launcher *launcher_base, int vt)
+{
+ struct launcher_direct *launcher = wl_container_of(launcher_base, launcher, base);
+ return ioctl(launcher->tty, VT_ACTIVATE, vt);
+}
+
+static int
+launcher_direct_connect(struct weston_launcher **out, struct weston_compositor *compositor,
+ int tty, const char *seat_id, bool sync_drm)
+{
+ struct launcher_direct *launcher;
+
+ if (geteuid() != 0)
+ return -EINVAL;
+
+ launcher = zalloc(sizeof(*launcher));
+ if (launcher == NULL)
+ return -ENOMEM;
+
+ launcher->base.iface = &launcher_direct_iface;
+ launcher->compositor = compositor;
+
+ if (setup_tty(launcher, tty) == -1) {
+ free(launcher);
+ return -1;
+ }
+
+ * (struct launcher_direct **) out = launcher;
+ return 0;
+}
+
+static void
+launcher_direct_destroy(struct weston_launcher *launcher_base)
+{
+ struct launcher_direct *launcher = wl_container_of(launcher_base, launcher, base);
+
+ launcher_direct_restore(&launcher->base);
+ wl_event_source_remove(launcher->vt_source);
+
+ if (launcher->tty >= 0)
+ close(launcher->tty);
+
+ free(launcher);
+}
+
+struct launcher_interface launcher_direct_iface = {
+ launcher_direct_connect,
+ launcher_direct_destroy,
+ launcher_direct_open,
+ launcher_direct_close,
+ launcher_direct_activate_vt,
+ launcher_direct_restore,
+};
diff --git a/src/launcher-impl.h b/src/launcher-impl.h
new file mode 100644
index 000000000..742721bf0
--- /dev/null
+++ b/src/launcher-impl.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright © 2015 Jasper St. Pierre
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission. The copyright holders make
+ * no representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "config.h"
+
+#include "compositor.h"
+
+struct weston_launcher;
+
+struct launcher_interface {
+ int (* connect) (struct weston_launcher **launcher_out, struct weston_compositor *compositor,
+ int tty, const char *seat_id, bool sync_drm);
+ void (* destroy) (struct weston_launcher *launcher);
+ int (* open) (struct weston_launcher *launcher, const char *path, int flags);
+ void (* close) (struct weston_launcher *launcher, int fd);
+ int (* activate_vt) (struct weston_launcher *launcher, int vt);
+ void (* restore) (struct weston_launcher *launcher);
+};
+
+struct weston_launcher {
+ struct launcher_interface *iface;
+};
+
+extern struct launcher_interface launcher_logind_iface;
+extern struct launcher_interface launcher_weston_launch_iface;
+extern struct launcher_interface launcher_direct_iface;
diff --git a/src/launcher-logind.c b/src/launcher-logind.c
index 4fab9a475..c148b24ba 100644
--- a/src/launcher-logind.c
+++ b/src/launcher-logind.c
@@ -44,7 +44,7 @@
#include "compositor.h"
#include "dbus.h"
-#include "launcher-logind.h"
+#include "launcher-impl.h"
#define DRM_MAJOR 226
@@ -52,7 +52,8 @@
#define KDSKBMUTE 0x4B51
#endif
-struct weston_logind {
+struct launcher_logind {
+ struct weston_launcher base;
struct weston_compositor *compositor;
bool sync_drm;
char *seat;
@@ -70,7 +71,7 @@ struct weston_logind {
};
static int
-weston_logind_take_device(struct weston_logind *wl, uint32_t major,
+launcher_logind_take_device(struct launcher_logind *wl, uint32_t major,
uint32_t minor, bool *paused_out)
{
DBusMessage *m, *reply;
@@ -122,7 +123,7 @@ err_unref:
}
static void
-weston_logind_release_device(struct weston_logind *wl, uint32_t major,
+launcher_logind_release_device(struct launcher_logind *wl, uint32_t major,
uint32_t minor)
{
DBusMessage *m;
@@ -144,7 +145,7 @@ weston_logind_release_device(struct weston_logind *wl, uint32_t major,
}
static void
-weston_logind_pause_device_complete(struct weston_logind *wl, uint32_t major,
+launcher_logind_pause_device_complete(struct launcher_logind *wl, uint32_t major,
uint32_t minor)
{
DBusMessage *m;
@@ -165,10 +166,10 @@ weston_logind_pause_device_complete(struct weston_logind *wl, uint32_t major,
}
}
-WL_EXPORT int
-weston_logind_open(struct weston_logind *wl, const char *path,
- int flags)
+static int
+launcher_logind_open(struct weston_launcher *launcher, const char *path, int flags)
{
+ struct launcher_logind *wl = wl_container_of(launcher, wl, base);
struct stat st;
int fl, r, fd;
@@ -180,7 +181,7 @@ weston_logind_open(struct weston_logind *wl, const char *path,
return -1;
}
- fd = weston_logind_take_device(wl, major(st.st_rdev),
+ fd = launcher_logind_take_device(wl, major(st.st_rdev),
minor(st.st_rdev), NULL);
if (fd < 0)
return fd;
@@ -210,15 +211,16 @@ weston_logind_open(struct weston_logind *wl, const char *path,
err_close:
close(fd);
- weston_logind_release_device(wl, major(st.st_rdev),
+ launcher_logind_release_device(wl, major(st.st_rdev),
minor(st.st_rdev));
errno = -r;
return -1;
}
-WL_EXPORT void
-weston_logind_close(struct weston_logind *wl, int fd)
+static void
+launcher_logind_close(struct weston_launcher *launcher, int fd)
{
+ struct launcher_logind *wl = wl_container_of(launcher, wl, base);
struct stat st;
int r;
@@ -233,13 +235,14 @@ weston_logind_close(struct weston_logind *wl, int fd)
return;
}
- weston_logind_release_device(wl, major(st.st_rdev),
+ launcher_logind_release_device(wl, major(st.st_rdev),
minor(st.st_rdev));
}
-WL_EXPORT void
-weston_logind_restore(struct weston_logind *wl)
+static void
+launcher_logind_restore(struct weston_launcher *launcher)
{
+ struct launcher_logind *wl = wl_container_of(launcher, wl, base);
struct vt_mode mode = { 0 };
ioctl(wl->vt, KDSETMODE, KD_TEXT);
@@ -249,9 +252,10 @@ weston_logind_restore(struct weston_logind *wl)
ioctl(wl->vt, VT_SETMODE, &mode);
}
-WL_EXPORT int
-weston_logind_activate_vt(struct weston_logind *wl, int vt)
+static int
+launcher_logind_activate_vt(struct weston_launcher *launcher, int vt)
{
+ struct launcher_logind *wl = wl_container_of(launcher, wl, base);
int r;
r = ioctl(wl->vt, VT_ACTIVATE, vt);
@@ -262,7 +266,7 @@ weston_logind_activate_vt(struct weston_logind *wl, int vt)
}
static void
-weston_logind_set_active(struct weston_logind *wl, bool active)
+launcher_logind_set_active(struct launcher_logind *wl, bool active)
{
if (!wl->compositor->session_active == !active)
return;
@@ -274,7 +278,7 @@ weston_logind_set_active(struct weston_logind *wl, bool active)
}
static void
-parse_active(struct weston_logind *wl, DBusMessage *m, DBusMessageIter *iter)
+parse_active(struct launcher_logind *wl, DBusMessage *m, DBusMessageIter *iter)
{
DBusMessageIter sub;
dbus_bool_t b;
@@ -293,13 +297,13 @@ parse_active(struct weston_logind *wl, DBusMessage *m, DBusMessageIter *iter)
* wake-up the compositor once the master-device is up and running. For
* other backends, we immediately forward the Active-change event. */
if (!wl->sync_drm || !b)
- weston_logind_set_active(wl, b);
+ launcher_logind_set_active(wl, b);
}
static void
get_active_cb(DBusPendingCall *pending, void *data)
{
- struct weston_logind *wl = data;
+ struct launcher_logind *wl = data;
DBusMessageIter iter;
DBusMessage *m;
int type;
@@ -320,7 +324,7 @@ get_active_cb(DBusPendingCall *pending, void *data)
}
static void
-weston_logind_get_active(struct weston_logind *wl)
+launcher_logind_get_active(struct launcher_logind *wl)
{
DBusPendingCall *pending;
DBusMessage *m;
@@ -366,15 +370,15 @@ err_unref:
}
static void
-disconnected_dbus(struct weston_logind *wl)
+disconnected_dbus(struct launcher_logind *wl)
{
weston_log("logind: dbus connection lost, exiting..\n");
- weston_logind_restore(wl);
+ launcher_logind_restore(&wl->base);
exit(-1);
}
static void
-session_removed(struct weston_logind *wl, DBusMessage *m)
+session_removed(struct launcher_logind *wl, DBusMessage *m)
{
const char *name, *obj;
bool r;
@@ -390,13 +394,13 @@ session_removed(struct weston_logind *wl, DBusMessage *m)
if (!strcmp(name, wl->sid)) {
weston_log("logind: our session got closed, exiting..\n");
- weston_logind_restore(wl);
+ launcher_logind_restore(&wl->base);
exit(-1);
}
}
static void
-property_changed(struct weston_logind *wl, DBusMessage *m)
+property_changed(struct launcher_logind *wl, DBusMessage *m)
{
DBusMessageIter iter, sub, entry;
const char *interface, *name;
@@ -441,7 +445,7 @@ property_changed(struct weston_logind *wl, DBusMessage *m)
dbus_message_iter_get_basic(&sub, &name);
if (!strcmp(name, "Active")) {
- weston_logind_get_active(wl);
+ launcher_logind_get_active(wl);
return;
}
@@ -455,7 +459,7 @@ error:
}
static void
-device_paused(struct weston_logind *wl, DBusMessage *m)
+device_paused(struct launcher_logind *wl, DBusMessage *m)
{
bool r;
const char *type;
@@ -480,14 +484,14 @@ device_paused(struct weston_logind *wl, DBusMessage *m)
* If it's our main DRM device, tell the compositor to go asleep. */
if (!strcmp(type, "pause"))
- weston_logind_pause_device_complete(wl, major, minor);
+ launcher_logind_pause_device_complete(wl, major, minor);
if (wl->sync_drm && major == DRM_MAJOR)
- weston_logind_set_active(wl, false);
+ launcher_logind_set_active(wl, false);
}
static void
-device_resumed(struct weston_logind *wl, DBusMessage *m)
+device_resumed(struct launcher_logind *wl, DBusMessage *m)
{
bool r;
uint32_t major;
@@ -509,13 +513,13 @@ device_resumed(struct weston_logind *wl, DBusMessage *m)
* notify the compositor to wake up. */
if (wl->sync_drm && major == DRM_MAJOR)
- weston_logind_set_active(wl, true);
+ launcher_logind_set_active(wl, true);
}
static DBusHandlerResult
filter_dbus(DBusConnection *c, DBusMessage *m, void *data)
{
- struct weston_logind *wl = data;
+ struct launcher_logind *wl = data;
if (dbus_message_is_signal(m, DBUS_INTERFACE_LOCAL, "Disconnected")) {
disconnected_dbus(wl);
@@ -537,7 +541,7 @@ filter_dbus(DBusConnection *c, DBusMessage *m, void *data)
}
static int
-weston_logind_setup_dbus(struct weston_logind *wl)
+launcher_logind_setup_dbus(struct launcher_logind *wl)
{
bool b;
int r;
@@ -603,14 +607,14 @@ err_spath:
}
static void
-weston_logind_destroy_dbus(struct weston_logind *wl)
+launcher_logind_destroy_dbus(struct launcher_logind *wl)
{
/* don't remove any dbus-match as the connection is closed, anyway */
free(wl->spath);
}
static int
-weston_logind_take_control(struct weston_logind *wl)
+launcher_logind_take_control(struct launcher_logind *wl)
{
DBusError err;
DBusMessage *m, *reply;
@@ -659,7 +663,7 @@ err_unref:
}
static void
-weston_logind_release_control(struct weston_logind *wl)
+launcher_logind_release_control(struct launcher_logind *wl)
{
DBusMessage *m;
@@ -676,7 +680,7 @@ weston_logind_release_control(struct weston_logind *wl)
static int
signal_event(int fd, uint32_t mask, void *data)
{
- struct weston_logind *wl = data;
+ struct launcher_logind *wl = data;
struct signalfd_siginfo sig;
if (read(fd, &sig, sizeof sig) != sizeof sig) {
@@ -693,7 +697,7 @@ signal_event(int fd, uint32_t mask, void *data)
}
static int
-weston_logind_setup_vt(struct weston_logind *wl)
+launcher_logind_setup_vt(struct launcher_logind *wl)
{
struct stat st;
char buf[64];
@@ -816,20 +820,42 @@ err_close:
}
static void
-weston_logind_destroy_vt(struct weston_logind *wl)
+launcher_logind_destroy_vt(struct launcher_logind *wl)
{
- weston_logind_restore(wl);
+ launcher_logind_restore(&wl->base);
wl_event_source_remove(wl->sfd_source);
close(wl->sfd);
close(wl->vt);
}
-WL_EXPORT int
-weston_logind_connect(struct weston_logind **out,
- struct weston_compositor *compositor,
- const char *seat_id, int tty, bool sync_drm)
+static int
+weston_sd_session_get_vt(const char *sid, unsigned int *out)
{
- struct weston_logind *wl;
+#ifdef HAVE_SYSTEMD_LOGIN_209
+ return sd_session_get_vt(sid, out);
+#else
+ int r;
+ char *tty;
+
+ r = sd_session_get_tty(sid, &tty);
+ if (r < 0)
+ return r;
+
+ r = sscanf(tty, "tty%u", out);
+ free(tty);
+
+ if (r != 1)
+ return -EINVAL;
+
+ return 0;
+#endif
+}
+
+static int
+launcher_logind_connect(struct weston_launcher **out, struct weston_compositor *compositor,
+ int tty, const char *seat_id, bool sync_drm)
+{
+ struct launcher_logind *wl;
struct wl_event_loop *loop;
char *t;
int r;
@@ -840,6 +866,7 @@ weston_logind_connect(struct weston_logind **out,
goto err_out;
}
+ wl->base.iface = &launcher_logind_iface;
wl->compositor = compositor;
wl->sync_drm = sync_drm;
@@ -888,26 +915,26 @@ weston_logind_connect(struct weston_logind **out,
goto err_session;
}
- r = weston_logind_setup_dbus(wl);
+ r = launcher_logind_setup_dbus(wl);
if (r < 0)
goto err_dbus;
- r = weston_logind_take_control(wl);
+ r = launcher_logind_take_control(wl);
if (r < 0)
goto err_dbus_cleanup;
- r = weston_logind_setup_vt(wl);
+ r = launcher_logind_setup_vt(wl);
if (r < 0)
goto err_control;
weston_log("logind: session control granted\n");
- *out = wl;
+ * (struct launcher_logind **) out = wl;
return 0;
err_control:
- weston_logind_release_control(wl);
+ launcher_logind_release_control(wl);
err_dbus_cleanup:
- weston_logind_destroy_dbus(wl);
+ launcher_logind_destroy_dbus(wl);
err_dbus:
weston_dbus_close(wl->dbus, wl->dbus_ctx);
err_session:
@@ -922,19 +949,30 @@ err_out:
return -1;
}
-WL_EXPORT void
-weston_logind_destroy(struct weston_logind *wl)
+static void
+launcher_logind_destroy(struct weston_launcher *launcher)
{
+ struct launcher_logind *wl = wl_container_of(launcher, wl, base);
+
if (wl->pending_active) {
dbus_pending_call_cancel(wl->pending_active);
dbus_pending_call_unref(wl->pending_active);
}
- weston_logind_destroy_vt(wl);
- weston_logind_release_control(wl);
- weston_logind_destroy_dbus(wl);
+ launcher_logind_destroy_vt(wl);
+ launcher_logind_release_control(wl);
+ launcher_logind_destroy_dbus(wl);
weston_dbus_close(wl->dbus, wl->dbus_ctx);
free(wl->sid);
free(wl->seat);
free(wl);
}
+
+struct launcher_interface launcher_logind_iface = {
+ launcher_logind_connect,
+ launcher_logind_destroy,
+ launcher_logind_open,
+ launcher_logind_close,
+ launcher_logind_activate_vt,
+ launcher_logind_restore,
+};
diff --git a/src/launcher-logind.h b/src/launcher-logind.h
deleted file mode 100644
index 1bc4961b0..000000000
--- a/src/launcher-logind.h
+++ /dev/null
@@ -1,123 +0,0 @@
-/*
- * Copyright © 2013 David Herrmann
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial
- * portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include "config.h"
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "compositor.h"
-
-struct weston_logind;
-
-#if defined(HAVE_SYSTEMD_LOGIN) && defined(HAVE_DBUS)
-
-#include <systemd/sd-login.h>
-
-int
-weston_logind_open(struct weston_logind *wl, const char *path,
- int flags);
-
-void
-weston_logind_close(struct weston_logind *wl, int fd);
-
-void
-weston_logind_restore(struct weston_logind *wl);
-
-int
-weston_logind_activate_vt(struct weston_logind *wl, int vt);
-
-int
-weston_logind_connect(struct weston_logind **out,
- struct weston_compositor *compositor,
- const char *seat_id, int tty, bool sync_drm);
-
-void
-weston_logind_destroy(struct weston_logind *wl);
-
-static inline int
-weston_sd_session_get_vt(const char *sid, unsigned int *out)
-{
-#ifdef HAVE_SYSTEMD_LOGIN_209
- return sd_session_get_vt(sid, out);
-#else
- int r;
- char *tty;
-
- r = sd_session_get_tty(sid, &tty);
- if (r < 0)
- return r;
-
- r = sscanf(tty, "tty%u", out);
- free(tty);
-
- if (r != 1)
- return -EINVAL;
-
- return 0;
-#endif
-}
-
-#else /* defined(HAVE_SYSTEMD_LOGIN) && defined(HAVE_DBUS) */
-
-static inline int
-weston_logind_open(struct weston_logind *wl, const char *path,
- int flags)
-{
- return -ENOSYS;
-}
-
-static inline void
-weston_logind_close(struct weston_logind *wl, int fd)
-{
-}
-
-static inline void
-weston_logind_restore(struct weston_logind *wl)
-{
-}
-
-static inline int
-weston_logind_activate_vt(struct weston_logind *wl, int vt)
-{
- return -ENOSYS;
-}
-
-static inline int
-weston_logind_connect(struct weston_logind **out,
- struct weston_compositor *compositor,
- const char *seat_id, int tty, bool sync_drm)
-{
- return -ENOSYS;
-}
-
-static inline void
-weston_logind_destroy(struct weston_logind *wl)
-{
-}
-
-#endif /* defined(HAVE_SYSTEMD_LOGIN) && defined(HAVE_DBUS) */
diff --git a/src/launcher-util.c b/src/launcher-util.c
index dc02dff43..e1beef6bb 100644
--- a/src/launcher-util.c
+++ b/src/launcher-util.c
@@ -26,440 +26,66 @@
#include "config.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <errno.h>
-#include <signal.h>
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/uio.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <linux/vt.h>
-#include <linux/kd.h>
-#include <linux/major.h>
-
#include "compositor.h"
+
#include "launcher-util.h"
-#include "launcher-logind.h"
-#include "weston-launch.h"
+#include "launcher-impl.h"
-#define DRM_MAJOR 226
+#include <unistd.h>
-#ifndef KDSKBMUTE
-#define KDSKBMUTE 0x4B51
+static struct launcher_interface *ifaces[] = {
+#ifdef HAVE_SYSTEMD_LOGIN
+ &launcher_logind_iface,
#endif
+ &launcher_weston_launch_iface,
+ &launcher_direct_iface,
+ NULL,
+};
-#ifdef HAVE_LIBDRM
-
-#include <xf86drm.h>
-
-static inline int
-is_drm_master(int drm_fd)
+WL_EXPORT struct weston_launcher *
+weston_launcher_connect(struct weston_compositor *compositor, int tty,
+ const char *seat_id, bool sync_drm)
{
- drm_magic_t magic;
+ struct launcher_interface **it;
- return drmGetMagic(drm_fd, &magic) == 0 &&
- drmAuthMagic(drm_fd, magic) == 0;
-}
+ for (it = ifaces; *it != NULL; it++) {
+ struct launcher_interface *iface = *it;
+ struct weston_launcher *launcher;
-#else
-
-static inline int
-drmDropMaster(int drm_fd)
-{
- return 0;
-}
+ if (iface->connect(&launcher, compositor, tty, seat_id, sync_drm) == 0)
+ return launcher;
+ }
-static inline int
-drmSetMaster(int drm_fd)
-{
- return 0;
+ return NULL;
}
-static inline int
-is_drm_master(int drm_fd)
+WL_EXPORT void
+weston_launcher_destroy(struct weston_launcher *launcher)
{
- return 0;
+ launcher->iface->destroy(launcher);
}
-#endif
-
-
-union cmsg_data { unsigned char b[4]; int fd; };
-
-struct weston_launcher {
- struct weston_compositor *compositor;
- struct weston_logind *logind;
- struct wl_event_loop *loop;
- int fd;
- struct wl_event_source *source;
-
- int kb_mode, tty, drm_fd;
- struct wl_event_source *vt_source;
-};
-
-int
+WL_EXPORT int
weston_launcher_open(struct weston_launcher *launcher,
const char *path, int flags)
{
- int n, fd, ret = -1;
- struct msghdr msg;
- struct cmsghdr *cmsg;
- struct iovec iov;
- union cmsg_data *data;
- char control[CMSG_SPACE(sizeof data->fd)];
- ssize_t len;
- struct weston_launcher_open *message;
- struct stat s;
-
- /* We really don't want to be leaking fds to child processes so
- * we force this flag here. If someone comes up with a legitimate
- * reason to not CLOEXEC they'll need to unset the flag manually.
- */
- flags |= O_CLOEXEC;
-
- if (launcher->logind)
- return weston_logind_open(launcher->logind, path, flags);
-
- if (launcher->fd == -1) {
- fd = open(path, flags);
- if (fd == -1)
- return -1;
-
- if (fstat(fd, &s) == -1) {
- close(fd);
- return -1;
- }
-
- if (major(s.st_rdev) == DRM_MAJOR) {
- launcher->drm_fd = fd;
- if (!is_drm_master(fd)) {
- weston_log("drm fd not master\n");
- close(fd);
- return -1;
- }
- }
-
- return fd;
- }
-
- n = sizeof(*message) + strlen(path) + 1;
- message = malloc(n);
- if (!message)
- return -1;
-
- message->header.opcode = WESTON_LAUNCHER_OPEN;
- message->flags = flags;
- strcpy(message->path, path);
-
- do {
- len = send(launcher->fd, message, n, 0);
- } while (len < 0 && errno == EINTR);
- free(message);
-
- memset(&msg, 0, sizeof msg);
- iov.iov_base = &ret;
- iov.iov_len = sizeof ret;
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
- msg.msg_control = control;
- msg.msg_controllen = sizeof control;
-
- do {
- len = recvmsg(launcher->fd, &msg, MSG_CMSG_CLOEXEC);
- } while (len < 0 && errno == EINTR);
-
- if (len != sizeof ret ||
- ret < 0)
- return -1;
-
- cmsg = CMSG_FIRSTHDR(&msg);
- if (!cmsg ||
- cmsg->cmsg_level != SOL_SOCKET ||
- cmsg->cmsg_type != SCM_RIGHTS) {
- fprintf(stderr, "invalid control message\n");
- return -1;
- }
-
- data = (union cmsg_data *) CMSG_DATA(cmsg);
- if (data->fd == -1) {
- fprintf(stderr, "missing drm fd in socket request\n");
- return -1;
- }
-
- return data->fd;
+ return launcher->iface->open(launcher, path, flags);
}
-void
+WL_EXPORT void
weston_launcher_close(struct weston_launcher *launcher, int fd)
{
- if (launcher->logind)
- weston_logind_close(launcher->logind, fd);
-
- close(fd);
-}
-
-void
-weston_launcher_restore(struct weston_launcher *launcher)
-{
- struct vt_mode mode = { 0 };
-
- if (launcher->logind)
- return weston_logind_restore(launcher->logind);
-
- if (ioctl(launcher->tty, KDSKBMUTE, 0) &&
- ioctl(launcher->tty, KDSKBMODE, launcher->kb_mode))
- weston_log("failed to restore kb mode: %m\n");
-
- if (ioctl(launcher->tty, KDSETMODE, KD_TEXT))
- weston_log("failed to set KD_TEXT mode on tty: %m\n");
-
- /* We have to drop master before we switch the VT back in
- * VT_AUTO, so we don't risk switching to a VT with another
- * display server, that will then fail to set drm master. */
- drmDropMaster(launcher->drm_fd);
-
- mode.mode = VT_AUTO;
- if (ioctl(launcher->tty, VT_SETMODE, &mode) < 0)
- weston_log("could not reset vt handling\n");
-}
-
-static int
-weston_launcher_data(int fd, uint32_t mask, void *data)
-{
- struct weston_launcher *launcher = data;
- int len, ret;
-
- if (mask & (WL_EVENT_HANGUP | WL_EVENT_ERROR)) {
- weston_log("launcher socket closed, exiting\n");
- /* Normally the weston-launch will reset the tty, but
- * in this case it died or something, so do it here so
- * we don't end up with a stuck vt. */
- weston_launcher_restore(launcher);
- exit(-1);
- }
-
- do {
- len = recv(launcher->fd, &ret, sizeof ret, 0);
- } while (len < 0 && errno == EINTR);
-
- switch (ret) {
- case WESTON_LAUNCHER_ACTIVATE:
- launcher->compositor->session_active = 1;
- wl_signal_emit(&launcher->compositor->session_signal,
- launcher->compositor);
- break;
- case WESTON_LAUNCHER_DEACTIVATE:
- launcher->compositor->session_active = 0;
- wl_signal_emit(&launcher->compositor->session_signal,
- launcher->compositor);
- break;
- default:
- weston_log("unexpected event from weston-launch\n");
- break;
- }
-
- return 1;
-}
-
-static int
-vt_handler(int signal_number, void *data)
-{
- struct weston_launcher *launcher = data;
- struct weston_compositor *compositor = launcher->compositor;
-
- if (compositor->session_active) {
- compositor->session_active = 0;
- wl_signal_emit(&compositor->session_signal, compositor);
- drmDropMaster(launcher->drm_fd);
- ioctl(launcher->tty, VT_RELDISP, 1);
- } else {
- ioctl(launcher->tty, VT_RELDISP, VT_ACKACQ);
- drmSetMaster(launcher->drm_fd);
- compositor->session_active = 1;
- wl_signal_emit(&compositor->session_signal, compositor);
- }
-
- return 1;
+ launcher->iface->close(launcher, fd);
}
-static int
-setup_tty(struct weston_launcher *launcher, int tty)
-{
- struct wl_event_loop *loop;
- struct vt_mode mode = { 0 };
- struct stat buf;
- char tty_device[32] ="<stdin>";
- int ret, kd_mode;
-
- if (tty == 0) {
- launcher->tty = dup(tty);
- if (launcher->tty == -1) {
- weston_log("couldn't dup stdin: %m\n");
- return -1;
- }
- } else {
- snprintf(tty_device, sizeof tty_device, "/dev/tty%d", tty);
- launcher->tty = open(tty_device, O_RDWR | O_CLOEXEC);
- if (launcher->tty == -1) {
- weston_log("couldn't open tty %s: %m\n", tty_device);
- return -1;
- }
- }
-
- if (fstat(launcher->tty, &buf) == -1 ||
- major(buf.st_rdev) != TTY_MAJOR || minor(buf.st_rdev) == 0) {
- weston_log("%s not a vt\n", tty_device);
- weston_log("if running weston from ssh, "
- "use --tty to specify a tty\n");
- goto err_close;
- }
-
- ret = ioctl(launcher->tty, KDGETMODE, &kd_mode);
- if (ret) {
- weston_log("failed to get VT mode: %m\n");
- return -1;
- }
- if (kd_mode != KD_TEXT) {
- weston_log("%s is already in graphics mode, "
- "is another display server running?\n", tty_device);
- goto err_close;
- }
-
- ioctl(launcher->tty, VT_ACTIVATE, minor(buf.st_rdev));
- ioctl(launcher->tty, VT_WAITACTIVE, minor(buf.st_rdev));
-
- if (ioctl(launcher->tty, KDGKBMODE, &launcher->kb_mode)) {
- weston_log("failed to read keyboard mode: %m\n");
- goto err_close;
- }
-
- if (ioctl(launcher->tty, KDSKBMUTE, 1) &&
- ioctl(launcher->tty, KDSKBMODE, K_OFF)) {
- weston_log("failed to set K_OFF keyboard mode: %m\n");
- goto err_close;
- }
-
- ret = ioctl(launcher->tty, KDSETMODE, KD_GRAPHICS);
- if (ret) {
- weston_log("failed to set KD_GRAPHICS mode on tty: %m\n");
- goto err_close;
- }
-
- /*
- * SIGRTMIN is used as global VT-acquire+release signal. Note that
- * SIGRT* must be tested on runtime, as their exact values are not
- * known at compile-time. POSIX requires 32 of them to be available.
- */
- if (SIGRTMIN > SIGRTMAX) {
- weston_log("not enough RT signals available: %u-%u\n",
- SIGRTMIN, SIGRTMAX);
- ret = -EINVAL;
- goto err_close;
- }
-
- mode.mode = VT_PROCESS;
- mode.relsig = SIGRTMIN;
- mode.acqsig = SIGRTMIN;
- if (ioctl(launcher->tty, VT_SETMODE, &mode) < 0) {
- weston_log("failed to take control of vt handling\n");
- goto err_close;
- }
-
- loop = wl_display_get_event_loop(launcher->compositor->wl_display);
- launcher->vt_source =
- wl_event_loop_add_signal(loop, SIGRTMIN, vt_handler, launcher);
- if (!launcher->vt_source)
- goto err_close;
-
- return 0;
-
- err_close:
- close(launcher->tty);
- return -1;
-}
-
-int
+WL_EXPORT int
weston_launcher_activate_vt(struct weston_launcher *launcher, int vt)
{
- if (launcher->logind)
- return weston_logind_activate_vt(launcher->logind, vt);
-
- return ioctl(launcher->tty, VT_ACTIVATE, vt);
-}
-
-struct weston_launcher *
-weston_launcher_connect(struct weston_compositor *compositor, int tty,
- const char *seat_id, bool sync_drm)
-{
- struct weston_launcher *launcher;
- struct wl_event_loop *loop;
- int r;
-
- launcher = malloc(sizeof *launcher);
- if (launcher == NULL)
- return NULL;
-
- launcher->logind = NULL;
- launcher->compositor = compositor;
- launcher->drm_fd = -1;
- launcher->fd = weston_environment_get_fd("WESTON_LAUNCHER_SOCK");
- if (launcher->fd != -1) {
- launcher->tty = weston_environment_get_fd("WESTON_TTY_FD");
- /* We don't get a chance to read out the original kb
- * mode for the tty, so just hard code K_UNICODE here
- * in case we have to clean if weston-launch dies. */
- launcher->kb_mode = K_UNICODE;
-
- loop = wl_display_get_event_loop(compositor->wl_display);
- launcher->source = wl_event_loop_add_fd(loop, launcher->fd,
- WL_EVENT_READABLE,
- weston_launcher_data,
- launcher);
- if (launcher->source == NULL) {
- free(launcher);
- return NULL;
- }
- } else {
- r = weston_logind_connect(&launcher->logind, compositor,
- seat_id, tty, sync_drm);
- if (r < 0) {
- launcher->logind = NULL;
- if (geteuid() == 0) {
- if (setup_tty(launcher, tty) == -1) {
- free(launcher);
- return NULL;
- }
- } else {
- free(launcher);
- return NULL;
- }
- }
- }
-
- return launcher;
+ return launcher->iface->activate_vt(launcher, vt);
}
-void
-weston_launcher_destroy(struct weston_launcher *launcher)
+WL_EXPORT void
+weston_launcher_restore(struct weston_launcher *launcher)
{
- if (launcher->logind) {
- weston_logind_destroy(launcher->logind);
- } else if (launcher->fd != -1) {
- close(launcher->fd);
- wl_event_source_remove(launcher->source);
- } else {
- weston_launcher_restore(launcher);
- wl_event_source_remove(launcher->vt_source);
- }
-
- if (launcher->tty >= 0)
- close(launcher->tty);
-
- free(launcher);
+ launcher->iface->restore(launcher);
}
diff --git a/src/launcher-weston-launch.c b/src/launcher-weston-launch.c
new file mode 100644
index 000000000..09f671d01
--- /dev/null
+++ b/src/launcher-weston-launch.c
@@ -0,0 +1,302 @@
+/*
+ * Copyright © 2012 Benjamin Franzke
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission. The copyright holders make
+ * no representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <errno.h>
+#include <signal.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/uio.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <linux/vt.h>
+#include <linux/kd.h>
+#include <linux/major.h>
+
+#include "compositor.h"
+#include "weston-launch.h"
+#include "launcher-impl.h"
+
+#define DRM_MAJOR 226
+
+#ifndef KDSKBMUTE
+#define KDSKBMUTE 0x4B51
+#endif
+
+#ifdef HAVE_LIBDRM
+
+#include <xf86drm.h>
+
+static inline int
+is_drm_master(int drm_fd)
+{
+ drm_magic_t magic;
+
+ return drmGetMagic(drm_fd, &magic) == 0 &&
+ drmAuthMagic(drm_fd, magic) == 0;
+}
+
+#else
+
+static inline int
+drmDropMaster(int drm_fd)
+{
+ return 0;
+}
+
+static inline int
+drmSetMaster(int drm_fd)
+{
+ return 0;
+}
+
+static inline int
+is_drm_master(int drm_fd)
+{
+ return 0;
+}
+
+#endif
+
+
+union cmsg_data { unsigned char b[4]; int fd; };
+
+struct launcher_weston_launch {
+ struct weston_launcher base;
+ struct weston_compositor *compositor;
+ struct wl_event_loop *loop;
+ int fd;
+ struct wl_event_source *source;
+
+ int kb_mode, tty, drm_fd;
+ struct wl_event_source *vt_source;
+};
+
+static int
+launcher_weston_launch_open(struct weston_launcher *launcher_base,
+ const char *path, int flags)
+{
+ struct launcher_weston_launch *launcher = wl_container_of(launcher_base, launcher, base);
+ int n, ret;
+ struct msghdr msg;
+ struct cmsghdr *cmsg;
+ struct iovec iov;
+ union cmsg_data *data;
+ char control[CMSG_SPACE(sizeof data->fd)];
+ ssize_t len;
+ struct weston_launcher_open *message;
+
+ n = sizeof(*message) + strlen(path) + 1;
+ message = malloc(n);
+ if (!message)
+ return -1;
+
+ message->header.opcode = WESTON_LAUNCHER_OPEN;
+ message->flags = flags;
+ strcpy(message->path, path);
+
+ do {
+ len = send(launcher->fd, message, n, 0);
+ } while (len < 0 && errno == EINTR);
+ free(message);
+
+ memset(&msg, 0, sizeof msg);
+ iov.iov_base = &ret;
+ iov.iov_len = sizeof ret;
+ msg.msg_iov = &iov;
+ msg.msg_iovlen = 1;
+ msg.msg_control = control;
+ msg.msg_controllen = sizeof control;
+
+ do {
+ len = recvmsg(launcher->fd, &msg, MSG_CMSG_CLOEXEC);
+ } while (len < 0 && errno == EINTR);
+
+ if (len != sizeof ret ||
+ ret < 0)
+ return -1;
+
+ cmsg = CMSG_FIRSTHDR(&msg);
+ if (!cmsg ||
+ cmsg->cmsg_level != SOL_SOCKET ||
+ cmsg->cmsg_type != SCM_RIGHTS) {
+ fprintf(stderr, "invalid control message\n");
+ return -1;
+ }
+
+ data = (union cmsg_data *) CMSG_DATA(cmsg);
+ if (data->fd == -1) {
+ fprintf(stderr, "missing drm fd in socket request\n");
+ return -1;
+ }
+
+ return data->fd;
+}
+
+static void
+launcher_weston_launch_close(struct weston_launcher *launcher_base, int fd)
+{
+ close(fd);
+}
+
+static void
+launcher_weston_launch_restore(struct weston_launcher *launcher_base)
+{
+ struct launcher_weston_launch *launcher = wl_container_of(launcher_base, launcher, base);
+ struct vt_mode mode = { 0 };
+
+ if (ioctl(launcher->tty, KDSKBMUTE, 0) &&
+ ioctl(launcher->tty, KDSKBMODE, launcher->kb_mode))
+ weston_log("failed to restore kb mode: %m\n");
+
+ if (ioctl(launcher->tty, KDSETMODE, KD_TEXT))
+ weston_log("failed to set KD_TEXT mode on tty: %m\n");
+
+ /* We have to drop master before we switch the VT back in
+ * VT_AUTO, so we don't risk switching to a VT with another
+ * display server, that will then fail to set drm master. */
+ drmDropMaster(launcher->drm_fd);
+
+ mode.mode = VT_AUTO;
+ if (ioctl(launcher->tty, VT_SETMODE, &mode) < 0)
+ weston_log("could not reset vt handling\n");
+}
+
+static int
+launcher_weston_launch_data(int fd, uint32_t mask, void *data)
+{
+ struct launcher_weston_launch *launcher = data;
+ int len, ret;
+
+ if (mask & (WL_EVENT_HANGUP | WL_EVENT_ERROR)) {
+ weston_log("launcher socket closed, exiting\n");
+ /* Normally the weston-launch will reset the tty, but
+ * in this case it died or something, so do it here so
+ * we don't end up with a stuck vt. */
+ launcher_weston_launch_restore(&launcher->base);
+ exit(-1);
+ }
+
+ do {
+ len = recv(launcher->fd, &ret, sizeof ret, 0);
+ } while (len < 0 && errno == EINTR);
+
+ switch (ret) {
+ case WESTON_LAUNCHER_ACTIVATE:
+ launcher->compositor->session_active = 1;
+ wl_signal_emit(&launcher->compositor->session_signal,
+ launcher->compositor);
+ break;
+ case WESTON_LAUNCHER_DEACTIVATE:
+ launcher->compositor->session_active = 0;
+ wl_signal_emit(&launcher->compositor->session_signal,
+ launcher->compositor);
+ break;
+ default:
+ weston_log("unexpected event from weston-launch\n");
+ break;
+ }
+
+ return 1;
+}
+
+static int
+launcher_weston_launch_activate_vt(struct weston_launcher *launcher_base, int vt)
+{
+ struct launcher_weston_launch *launcher = wl_container_of(launcher_base, launcher, base);
+ return ioctl(launcher->tty, VT_ACTIVATE, vt);
+}
+
+static int
+launcher_weston_launch_connect(struct weston_launcher **out, struct weston_compositor *compositor,
+ int tty, const char *seat_id, bool sync_drm)
+{
+ struct launcher_weston_launch *launcher;
+ struct wl_event_loop *loop;
+
+ launcher = malloc(sizeof *launcher);
+ if (launcher == NULL)
+ return -ENOMEM;
+
+ launcher->base.iface = &launcher_weston_launch_iface;
+ * (struct launcher_weston_launch **) out = launcher;
+ launcher->compositor = compositor;
+ launcher->drm_fd = -1;
+ launcher->fd = weston_environment_get_fd("WESTON_LAUNCH_SOCK");
+ if (launcher->fd != -1) {
+ launcher->tty = weston_environment_get_fd("WESTON_TTY_FD");
+ /* We don't get a chance to read out the original kb
+ * mode for the tty, so just hard code K_UNICODE here
+ * in case we have to clean if weston-launch dies. */
+ launcher->kb_mode = K_UNICODE;
+
+ loop = wl_display_get_event_loop(compositor->wl_display);
+ launcher->source = wl_event_loop_add_fd(loop, launcher->fd,
+ WL_EVENT_READABLE,
+ launcher_weston_launch_data,
+ launcher);
+ if (launcher->source == NULL) {
+ free(launcher);
+ return -ENOMEM;
+ }
+
+ return 0;
+ } else {
+ return -1;
+ }
+}
+
+static void
+launcher_weston_launch_destroy(struct weston_launcher *launcher_base)
+{
+ struct launcher_weston_launch *launcher = wl_container_of(launcher_base, launcher, base);
+
+ if (launcher->fd != -1) {
+ close(launcher->fd);
+ wl_event_source_remove(launcher->source);
+ } else {
+ launcher_weston_launch_restore(&launcher->base);
+ wl_event_source_remove(launcher->vt_source);
+ }
+
+ if (launcher->tty >= 0)
+ close(launcher->tty);
+
+ free(launcher);
+}
+
+struct launcher_interface launcher_weston_launch_iface = {
+ launcher_weston_launch_connect,
+ launcher_weston_launch_destroy,
+ launcher_weston_launch_open,
+ launcher_weston_launch_close,
+ launcher_weston_launch_activate_vt,
+ launcher_weston_launch_restore,
+};
--
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