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Removed old session code from DRM backend.

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This commit is contained in:
Scott Anderson 2017-05-03 16:23:07 +12:00
parent 762ac7f4c0
commit 81998fdc98
12 changed files with 41 additions and 275 deletions
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1
backend/CMakeLists.txt
View file

@ -11,7 +11,6 @@ add_library(wlr-backend
wayland/wl_output.c
drm/backend.c
drm/drm.c
drm/session.c
drm/udev.c
)

28
backend/drm/backend.c
View file

@ -4,17 +4,16 @@
#include <string.h>
#include <errno.h>
#include <wlr/session.h>
#include <wlr/common/list.h>
#include "backend/drm/backend.h"
#include "backend/drm/drm.h"
#include "backend/drm/session.h"
#include "backend/drm/udev.h"
#include "common/log.h"
struct wlr_drm_backend *wlr_drm_backend_init(struct wl_listener *add,
struct wl_listener *rem,
struct wl_listener *render)
struct wlr_drm_backend *wlr_drm_backend_init(struct wlr_session *session,
struct wl_listener *add, struct wl_listener *rem, struct wl_listener *render)
{
struct wlr_drm_backend *backend = calloc(1, sizeof *backend);
if (!backend) {
@ -22,6 +21,8 @@ struct wlr_drm_backend *wlr_drm_backend_init(struct wl_listener *add,
return NULL;
}
backend->session = session;
backend->displays = list_create();
if (!backend->displays) {
wlr_log(L_ERROR, "Failed to allocate list");
@ -34,17 +35,12 @@ struct wlr_drm_backend *wlr_drm_backend_init(struct wl_listener *add,
goto error_list;
}
if (!wlr_session_start(&backend->session)) {
wlr_log(L_ERROR, "Failed to start session");
if (!wlr_udev_init(backend)) {
wlr_log(L_ERROR, "Failed to start udev");
goto error_loop;
}
if (!wlr_udev_init(backend)) {
wlr_log(L_ERROR, "Failed to start udev");
goto error_session;
}
backend->fd = wlr_udev_find_gpu(&backend->udev, &backend->session);
backend->fd = wlr_udev_find_gpu(&backend->udev, backend->session);
if (backend->fd == -1) {
wlr_log(L_ERROR, "Failed to open DRM device");
goto error_udev;
@ -71,11 +67,9 @@ struct wlr_drm_backend *wlr_drm_backend_init(struct wl_listener *add,
return backend;
error_fd:
wlr_session_release_device(&backend->session, backend->fd);
wlr_session_close_file(backend->session, backend->fd);
error_udev:
wlr_udev_free(&backend->udev);
error_session:
wlr_session_end(&backend->session);
error_loop:
wl_event_loop_destroy(backend->event_loop);
error_list:
@ -101,8 +95,8 @@ void wlr_drm_backend_free(struct wlr_drm_backend *backend)
wlr_drm_renderer_free(&backend->renderer);
wlr_udev_free(&backend->udev);
wlr_session_release_device(&backend->session, backend->fd);
wlr_session_end(&backend->session);
wlr_session_close_file(backend->session, backend->fd);
wlr_session_finish(backend->session);
wl_event_source_remove(backend->event_src.drm);
wl_event_source_remove(backend->event_src.udev);

219
backend/drm/session.c
View file

@ -1,219 +0,0 @@
#define _POSIX_C_SOURCE 200809L
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <systemd/sd-bus.h>
#include <systemd/sd-login.h>
#include <unistd.h>
#include <sys/sysmacros.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "backend/drm/backend.h"
#include "backend/drm/session.h"
#include "common/log.h"
int wlr_session_take_device(struct wlr_session *restrict session,
const char *restrict path,
bool *restrict paused_out)
{
int ret;
int fd = -1;
sd_bus_message *msg = NULL;
sd_bus_error error = SD_BUS_ERROR_NULL;
struct stat st;
if (stat(path, &st) < 0) {
wlr_log(L_ERROR, "Failed to stat '%s'", path);
return -1;
}
ret = sd_bus_call_method(session->bus,
"org.freedesktop.login1",
session->path,
"org.freedesktop.login1.Session",
"TakeDevice",
&error, &msg,
"uu", major(st.st_rdev), minor(st.st_rdev));
if (ret < 0) {
wlr_log(L_ERROR, "Failed to take device '%s': %s", path, error.message);
goto error;
}
int paused = 0;
ret = sd_bus_message_read(msg, "hb", &fd, &paused);
if (ret < 0) {
wlr_log(L_ERROR, "Failed to parse DBus response for '%s': %s",
path, strerror(-ret));
goto error;
}
// The original fd seem to be closed when the message is freed
// so we just clone it.
fd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
if (fd == -1) {
wlr_log(L_ERROR, "Failed to clone file descriptor for '%s': %s",
path, strerror(errno));
goto error;
}
if (paused_out)
*paused_out = paused;
error:
sd_bus_error_free(&error);
sd_bus_message_unref(msg);
return fd;
}
void wlr_session_release_device(struct wlr_session *session, int fd)
{
int ret;
sd_bus_message *msg = NULL;
sd_bus_error error = SD_BUS_ERROR_NULL;
struct stat st;
if (fstat(fd, &st) < 0) {
wlr_log(L_ERROR, "Failed to stat device '%d'", fd);
return;
}
ret = sd_bus_call_method(session->bus,
"org.freedesktop.login1",
session->path,
"org.freedesktop.login1.Session",
"ReleaseDevice",
&error, &msg,
"uu", major(st.st_rdev), minor(st.st_rdev));
if (ret < 0)
wlr_log(L_ERROR, "Failed to release device '%d'", fd);
sd_bus_error_free(&error);
sd_bus_message_unref(msg);
}
static bool session_activate(struct wlr_session *session)
{
int ret;
sd_bus_message *msg = NULL;
sd_bus_error error = SD_BUS_ERROR_NULL;
ret = sd_bus_call_method(session->bus,
"org.freedesktop.login1",
session->path,
"org.freedesktop.login1.Session",
"Activate",
&error, &msg,
"");
if (ret < 0)
wlr_log(L_ERROR, "Failed to activate session");
sd_bus_error_free(&error);
sd_bus_message_unref(msg);
return ret >= 0;
}
static bool take_control(struct wlr_session *session)
{
int ret;
sd_bus_message *msg = NULL;
sd_bus_error error = SD_BUS_ERROR_NULL;
ret = sd_bus_call_method(session->bus,
"org.freedesktop.login1",
session->path,
"org.freedesktop.login1.Session",
"TakeControl",
&error, &msg,
"b", false);
if (ret < 0)
wlr_log(L_ERROR, "Failed to take control of session");
sd_bus_error_free(&error);
sd_bus_message_unref(msg);
return ret >= 0;
}
static void release_control(struct wlr_session *session)
{
int ret;
sd_bus_message *msg = NULL;
sd_bus_error error = SD_BUS_ERROR_NULL;
ret = sd_bus_call_method(session->bus,
"org.freedesktop.login1",
session->path,
"org.freedesktop.login1.Session",
"ReleaseControl",
&error, &msg,
"");
if (ret < 0)
wlr_log(L_ERROR, "Failed to release control of session");
sd_bus_error_free(&error);
sd_bus_message_unref(msg);
}
void wlr_session_end(struct wlr_session *session)
{
release_control(session);
sd_bus_unref(session->bus);
free(session->id);
free(session->path);
free(session->seat);
}
bool wlr_session_start(struct wlr_session *session)
{
int ret;
ret = sd_pid_get_session(getpid(), &session->id);
if (ret < 0) {
wlr_log(L_ERROR, "Failed to get session id: %s", strerror(-ret));
goto error;
}
ret = sd_session_get_seat(session->id, &session->seat);
if (ret < 0) {
wlr_log(L_ERROR, "Failed to get seat id: %s", strerror(-ret));
goto error;
}
// This could be done using asprintf, but I don't want to define _GNU_SOURCE
const char *fmt = "/org/freedesktop/login1/session/%s";
int len = snprintf(NULL, 0, fmt, session->id);
session->path = malloc(len + 1);
if (!session->path)
goto error;
sprintf(session->path, fmt, session->id);
ret = sd_bus_default_system(&session->bus);
if (ret < 0) {
wlr_log(L_ERROR, "Failed to open DBus connection: %s", strerror(-ret));
goto error;
}
if (!session_activate(session))
goto error_bus;
if (!take_control(session))
goto error_bus;
return true;
error_bus:
sd_bus_unref(session->bus);
error:
free(session->path);
free(session->id);
free(session->seat);
return false;
}

11
backend/drm/udev.c
View file

@ -9,9 +9,10 @@
#include <xf86drmMode.h>
#include <wayland-server.h>
#include <wlr/session.h>
#include "backend/drm/backend.h"
#include "backend/drm/udev.h"
#include "backend/drm/session.h"
#include "backend/drm/drm.h"
#include "common/log.h"
@ -26,7 +27,7 @@ static bool device_is_kms(struct wlr_udev *udev,
if (!path)
return false;
fd = wlr_session_take_device(session, path, NULL);
fd = wlr_session_open_file(session, path);
if (fd < 0)
return false;
@ -39,7 +40,7 @@ static bool device_is_kms(struct wlr_udev *udev,
goto out_res;
if (*fd_out >= 0) {
wlr_session_release_device(session, *fd_out);
wlr_session_close_file(session, *fd_out);
free(udev->drm_path);
}
@ -52,7 +53,7 @@ static bool device_is_kms(struct wlr_udev *udev,
out_res:
drmModeFreeResources(res);
out_fd:
wlr_session_release_device(session, fd);
wlr_session_close_file(session, fd);
return false;
}
@ -79,6 +80,7 @@ int wlr_udev_find_gpu(struct wlr_udev *udev, struct wlr_session *session)
if (!dev)
continue;
/*
const char *seat = udev_device_get_property_value(dev, "ID_SEAT");
if (!seat)
seat = "seat0";
@ -86,6 +88,7 @@ int wlr_udev_find_gpu(struct wlr_udev *udev, struct wlr_session *session)
udev_device_unref(dev);
continue;
}
*/
struct udev_device *pci =
udev_device_get_parent_with_subsystem_devtype(dev, "pci", NULL);

1
example/CMakeLists.txt
View file

@ -12,4 +12,5 @@ add_executable(example-drm
target_link_libraries(example-drm
wlr-backend
wlr-session
)

9
example/example-drm.c
View file

@ -6,6 +6,7 @@
#include <GLES3/gl3.h>
#include <wlr/backend/drm.h>
#include <wlr/session.h>
struct state {
float color[3];
@ -92,7 +93,13 @@ int main()
wl_list_init(&state.render.link);
clock_gettime(CLOCK_MONOTONIC, &state.last_frame);
struct wlr_drm_backend *wlr = wlr_drm_backend_init(&state.add, &state.rem, &state.render);
struct wlr_session *session = wlr_session_start();
if (!session) {
return 1;
}
struct wlr_drm_backend *wlr = wlr_drm_backend_init(session,
&state.add, &state.rem, &state.render);
bool done = false;
struct wl_event_loop *event_loop = wlr_drm_backend_get_event_loop(wlr);

9
include/backend/drm/backend.h
View file

@ -8,10 +8,10 @@
#include <libudev.h>
#include <wayland-server.h>
#include <wlr/session.h>
#include <wlr/common/list.h>
#include <wlr/backend/drm.h>
#include "session.h"
#include "udev.h"
#include "event.h"
#include "drm.h"
@ -38,13 +38,12 @@ struct wlr_drm_backend {
uint32_t taken_crtcs;
struct wlr_drm_renderer renderer;
struct wlr_session session;
struct wlr_session *session;
struct wlr_udev udev;
};
struct wlr_drm_backend *wlr_drm_backend_init(struct wl_listener *add,
struct wl_listener *rem,
struct wl_listener *render);
struct wlr_drm_backend *wlr_drm_backend_init(struct wlr_session *session,
struct wl_listener *add, struct wl_listener *rem, struct wl_listener *render);
void wlr_drm_backend_free(struct wlr_drm_backend *backend);
#endif

24
include/backend/drm/session.h
View file

@ -1,24 +0,0 @@
#ifndef SESSION_H
#define SESSION_H
#include <systemd/sd-bus.h>
#include <stdbool.h>
struct wlr_session {
sd_bus *bus;
char *id;
char *path;
char *seat;
};
bool wlr_session_start(struct wlr_session *session);
void wlr_session_end(struct wlr_session *session);
int wlr_session_take_device(struct wlr_session *restrict session,
const char *restrict path,
bool *restrict paused_out);
void wlr_session_release_device(struct wlr_session *session, int fd);
#endif

2
include/backend/drm/udev.h
View file

@ -3,7 +3,7 @@
#include <libudev.h>
#include "backend/drm/session.h"
#include <wlr/session.h>
struct wlr_udev {
struct udev *udev;

6
include/wlr/backend/drm.h
View file

@ -2,13 +2,13 @@
#define WLR_BACKEND_DRM_H
#include <wayland-server.h>
#include <wlr/session.h>
struct wlr_drm_backend;
struct wlr_drm_display;
struct wlr_drm_backend *wlr_drm_backend_init(struct wl_listener *add,
struct wl_listener *rem,
struct wl_listener *render);
struct wlr_drm_backend *wlr_drm_backend_init(struct wlr_session *session,
struct wl_listener *add, struct wl_listener *rem, struct wl_listener *render);
void wlr_drm_backend_free(struct wlr_drm_backend *backend);
struct wl_event_loop *wlr_drm_backend_get_event_loop(struct wlr_drm_backend *backend);

3
session/logind.c
View file

@ -200,6 +200,9 @@ static struct wlr_session *logind_session_start(void) {
if (!take_control(session))
goto error_bus;
wl_log(L_INFO, "Successfully loaded logind session");
session->base.iface = session_logind_iface;
return &session->base;
error_bus:

3
session/session.c
View file

@ -1,6 +1,8 @@
#include <stddef.h>
#include <wlr/session.h>
#include <stdarg.h>
#include "common/log.h"
#include "session/interface.h"
static const struct session_interface *ifaces[] = {
@ -20,6 +22,7 @@ struct wlr_session *wlr_session_start(void) {
}
}
wlr_log(L_ERROR, "Failed to load session backend");
return NULL;
}