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weston/compositor/main.c

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/*
* Copyright © 2010-2011 Intel Corporation
* Copyright © 2008-2011 Kristian Høgsberg
* Copyright © 2012-2018 Collabora, Ltd.
* Copyright © 2010-2011 Benjamin Franzke
* Copyright © 2013 Jason Ekstrand
* Copyright © 2017, 2018 General Electric Company
*
* 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 <unistd.h>
#include <signal.h>
#include <errno.h>
#include <dlfcn.h>
#include <stdint.h>
#include <string.h>
#include <sys/utsname.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/socket.h>
#include <libinput.h>
#include <sys/time.h>
#include <linux/limits.h>
#include "weston.h"
#include "compositor.h"
#include "../shared/os-compatibility.h"
#include "../shared/helpers.h"
#include "../shared/string-helpers.h"
#include "git-version.h"
#include "version.h"
#include "weston.h"
#include "compositor-drm.h"
#include "compositor-headless.h"
#include "compositor-rdp.h"
#include "compositor-fbdev.h"
#include "compositor-x11.h"
#include "compositor-wayland.h"
#include "windowed-output-api.h"
#define WINDOW_TITLE "Weston Compositor"
struct wet_output_config {
int width;
int height;
int32_t scale;
uint32_t transform;
};
struct wet_compositor;
struct wet_head_tracker {
struct wl_listener head_destroy_listener;
};
struct wet_compositor {
struct weston_compositor *compositor;
struct weston_config *config;
struct wet_output_config *parsed_options;
bool drm_use_current_mode;
struct wl_listener heads_changed_listener;
int (*simple_output_configure)(struct weston_output *output);
bool init_failed;
};
static FILE *weston_logfile = NULL;
static int cached_tm_mday = -1;
static int weston_log_timestamp(void)
{
struct timeval tv;
struct tm *brokendown_time;
char string[128];
gettimeofday(&tv, NULL);
brokendown_time = localtime(&tv.tv_sec);
if (brokendown_time == NULL)
return fprintf(weston_logfile, "[(NULL)localtime] ");
if (brokendown_time->tm_mday != cached_tm_mday) {
strftime(string, sizeof string, "%Y-%m-%d %Z", brokendown_time);
fprintf(weston_logfile, "Date: %s\n", string);
cached_tm_mday = brokendown_time->tm_mday;
}
strftime(string, sizeof string, "%H:%M:%S", brokendown_time);
return fprintf(weston_logfile, "[%s.%03li] ", string, tv.tv_usec/1000);
}
static void
custom_handler(const char *fmt, va_list arg)
{
weston_log_timestamp();
fprintf(weston_logfile, "libwayland: ");
vfprintf(weston_logfile, fmt, arg);
}
static void
weston_log_file_open(const char *filename)
{
wl_log_set_handler_server(custom_handler);
if (filename != NULL) {
weston_logfile = fopen(filename, "a");
if (weston_logfile)
os_fd_set_cloexec(fileno(weston_logfile));
}
if (weston_logfile == NULL)
weston_logfile = stderr;
else
setvbuf(weston_logfile, NULL, _IOLBF, 256);
}
static void
weston_log_file_close(void)
{
if ((weston_logfile != stderr) && (weston_logfile != NULL))
fclose(weston_logfile);
weston_logfile = stderr;
}
static int
vlog(const char *fmt, va_list ap)
{
int l;
l = weston_log_timestamp();
l += vfprintf(weston_logfile, fmt, ap);
return l;
}
static int
vlog_continue(const char *fmt, va_list argp)
{
return vfprintf(weston_logfile, fmt, argp);
}
static struct wl_list child_process_list;
static struct weston_compositor *segv_compositor;
static int
sigchld_handler(int signal_number, void *data)
{
struct weston_process *p;
int status;
pid_t pid;
while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
wl_list_for_each(p, &child_process_list, link) {
if (p->pid == pid)
break;
}
if (&p->link == &child_process_list) {
weston_log("unknown child process exited\n");
continue;
}
wl_list_remove(&p->link);
p->cleanup(p, status);
}
if (pid < 0 && errno != ECHILD)
weston_log("waitpid error %m\n");
return 1;
}
static void
child_client_exec(int sockfd, const char *path)
{
int clientfd;
char s[32];
sigset_t allsigs;
/* do not give our signal mask to the new process */
sigfillset(&allsigs);
sigprocmask(SIG_UNBLOCK, &allsigs, NULL);
/* Launch clients as the user. Do not lauch clients with wrong euid.*/
if (seteuid(getuid()) == -1) {
weston_log("compositor: failed seteuid\n");
return;
}
/* SOCK_CLOEXEC closes both ends, so we dup the fd to get a
* non-CLOEXEC fd to pass through exec. */
clientfd = dup(sockfd);
if (clientfd == -1) {
weston_log("compositor: dup failed: %m\n");
return;
}
snprintf(s, sizeof s, "%d", clientfd);
setenv("WAYLAND_SOCKET", s, 1);
if (execl(path, path, NULL) < 0)
weston_log("compositor: executing '%s' failed: %m\n",
path);
}
WL_EXPORT struct wl_client *
weston_client_launch(struct weston_compositor *compositor,
struct weston_process *proc,
const char *path,
weston_process_cleanup_func_t cleanup)
{
int sv[2];
pid_t pid;
struct wl_client *client;
weston_log("launching '%s'\n", path);
if (os_socketpair_cloexec(AF_UNIX, SOCK_STREAM, 0, sv) < 0) {
weston_log("weston_client_launch: "
"socketpair failed while launching '%s': %m\n",
path);
return NULL;
}
pid = fork();
if (pid == -1) {
close(sv[0]);
close(sv[1]);
weston_log("weston_client_launch: "
"fork failed while launching '%s': %m\n", path);
return NULL;
}
if (pid == 0) {
child_client_exec(sv[1], path);
_exit(-1);
}
close(sv[1]);
client = wl_client_create(compositor->wl_display, sv[0]);
if (!client) {
close(sv[0]);
weston_log("weston_client_launch: "
"wl_client_create failed while launching '%s'.\n",
path);
return NULL;
}
proc->pid = pid;
proc->cleanup = cleanup;
weston_watch_process(proc);
return client;
}
WL_EXPORT void
weston_watch_process(struct weston_process *process)
{
wl_list_insert(&child_process_list, &process->link);
}
struct process_info {
struct weston_process proc;
char *path;
};
static void
process_handle_sigchld(struct weston_process *process, int status)
{
struct process_info *pinfo =
container_of(process, struct process_info, proc);
/*
* There are no guarantees whether this runs before or after
* the wl_client destructor.
*/
if (WIFEXITED(status)) {
weston_log("%s exited with status %d\n", pinfo->path,
WEXITSTATUS(status));
} else if (WIFSIGNALED(status)) {
weston_log("%s died on signal %d\n", pinfo->path,
WTERMSIG(status));
} else {
weston_log("%s disappeared\n", pinfo->path);
}
free(pinfo->path);
free(pinfo);
}
WL_EXPORT struct wl_client *
weston_client_start(struct weston_compositor *compositor, const char *path)
{
struct process_info *pinfo;
struct wl_client *client;
pinfo = zalloc(sizeof *pinfo);
if (!pinfo)
return NULL;
pinfo->path = strdup(path);
if (!pinfo->path)
goto out_free;
client = weston_client_launch(compositor, &pinfo->proc, path,
process_handle_sigchld);
if (!client)
goto out_str;
return client;
out_str:
free(pinfo->path);
out_free:
free(pinfo);
return NULL;
}
static void
log_uname(void)
{
struct utsname usys;
uname(&usys);
weston_log("OS: %s, %s, %s, %s\n", usys.sysname, usys.release,
usys.version, usys.machine);
}
static struct wet_compositor *
to_wet_compositor(struct weston_compositor *compositor)
{
return weston_compositor_get_user_data(compositor);
}
static struct wet_output_config *
wet_init_parsed_options(struct weston_compositor *ec)
{
struct wet_compositor *compositor = to_wet_compositor(ec);
struct wet_output_config *config;
config = zalloc(sizeof *config);
if (!config) {
perror("out of memory");
return NULL;
}
config->width = 0;
config->height = 0;
config->scale = 0;
config->transform = UINT32_MAX;
compositor->parsed_options = config;
return config;
}
WL_EXPORT struct weston_config *
wet_get_config(struct weston_compositor *ec)
{
struct wet_compositor *compositor = to_wet_compositor(ec);
return compositor->config;
}
static const char xdg_error_message[] =
"fatal: environment variable XDG_RUNTIME_DIR is not set.\n";
static const char xdg_wrong_message[] =
"fatal: environment variable XDG_RUNTIME_DIR\n"
"is set to \"%s\", which is not a directory.\n";
static const char xdg_wrong_mode_message[] =
"warning: XDG_RUNTIME_DIR \"%s\" is not configured\n"
"correctly. Unix access mode must be 0700 (current mode is %o),\n"
"and must be owned by the user (current owner is UID %d).\n";
static const char xdg_detail_message[] =
"Refer to your distribution on how to get it, or\n"
"http://www.freedesktop.org/wiki/Specifications/basedir-spec\n"
"on how to implement it.\n";
static void
verify_xdg_runtime_dir(void)
{
char *dir = getenv("XDG_RUNTIME_DIR");
struct stat s;
if (!dir) {
weston_log(xdg_error_message);
weston_log_continue(xdg_detail_message);
exit(EXIT_FAILURE);
}
if (stat(dir, &s) || !S_ISDIR(s.st_mode)) {
weston_log(xdg_wrong_message, dir);
weston_log_continue(xdg_detail_message);
exit(EXIT_FAILURE);
}
if ((s.st_mode & 0777) != 0700 || s.st_uid != getuid()) {
weston_log(xdg_wrong_mode_message,
dir, s.st_mode & 0777, s.st_uid);
weston_log_continue(xdg_detail_message);
}
}
static int
usage(int error_code)
{
fprintf(stderr,
"Usage: weston [OPTIONS]\n\n"
"This is weston version " VERSION ", the Wayland reference compositor.\n"
"Weston supports multiple backends, and depending on which backend is in use\n"
"different options will be accepted.\n\n"
"Core options:\n\n"
" --version\t\tPrint weston version\n"
" -B, --backend=MODULE\tBackend module, one of\n"
#if defined(BUILD_DRM_COMPOSITOR)
"\t\t\t\tdrm-backend.so\n"
#endif
#if defined(BUILD_FBDEV_COMPOSITOR)
"\t\t\t\tfbdev-backend.so\n"
#endif
#if defined(BUILD_HEADLESS_COMPOSITOR)
"\t\t\t\theadless-backend.so\n"
#endif
#if defined(BUILD_RDP_COMPOSITOR)
"\t\t\t\trdp-backend.so\n"
#endif
#if defined(BUILD_WAYLAND_COMPOSITOR)
"\t\t\t\twayland-backend.so\n"
#endif
#if defined(BUILD_X11_COMPOSITOR)
"\t\t\t\tx11-backend.so\n"
#endif
" --shell=MODULE\tShell module, defaults to desktop-shell.so\n"
" -S, --socket=NAME\tName of socket to listen on\n"
" -i, --idle-time=SECS\tIdle time in seconds\n"
" --xwayland\t\tLoad the xwayland module\n"
" --modules\t\tLoad the comma-separated list of modules\n"
" --log=FILE\t\tLog to the given file\n"
" -c, --config=FILE\tConfig file to load, defaults to weston.ini\n"
" --no-config\t\tDo not read weston.ini\n"
" --wait-for-debugger\tRaise SIGSTOP on start-up\n"
" -h, --help\t\tThis help message\n\n");
#if defined(BUILD_DRM_COMPOSITOR)
fprintf(stderr,
"Options for drm-backend.so:\n\n"
" --seat=SEAT\t\tThe seat that weston should run on\n"
" --tty=TTY\t\tThe tty to use\n"
" --drm-device=CARD\tThe DRM device to use, e.g. \"card0\".\n"
" --use-pixman\t\tUse the pixman (CPU) renderer\n"
" --current-mode\tPrefer current KMS mode over EDID preferred mode\n\n");
#endif
#if defined(BUILD_FBDEV_COMPOSITOR)
fprintf(stderr,
"Options for fbdev-backend.so:\n\n"
" --tty=TTY\t\tThe tty to use\n"
" --device=DEVICE\tThe framebuffer device to use\n"
"\n");
#endif
#if defined(BUILD_HEADLESS_COMPOSITOR)
fprintf(stderr,
"Options for headless-backend.so:\n\n"
" --width=WIDTH\t\tWidth of memory surface\n"
" --height=HEIGHT\tHeight of memory surface\n"
" --transform=TR\tThe output transformation, TR is one of:\n"
"\tnormal 90 180 270 flipped flipped-90 flipped-180 flipped-270\n"
" --use-pixman\t\tUse the pixman (CPU) renderer (default: no rendering)\n"
" --no-outputs\t\tDo not create any virtual outputs\n"
"\n");
#endif
#if defined(BUILD_RDP_COMPOSITOR)
fprintf(stderr,
"Options for rdp-backend.so:\n\n"
" --width=WIDTH\t\tWidth of desktop\n"
" --height=HEIGHT\tHeight of desktop\n"
" --env-socket\t\tUse socket defined in RDP_FD env variable as peer connection\n"
" --address=ADDR\tThe address to bind\n"
" --port=PORT\t\tThe port to listen on\n"
" --no-clients-resize\tThe RDP peers will be forced to the size of the desktop\n"
" --rdp4-key=FILE\tThe file containing the key for RDP4 encryption\n"
" --rdp-tls-cert=FILE\tThe file containing the certificate for TLS encryption\n"
" --rdp-tls-key=FILE\tThe file containing the private key for TLS encryption\n"
"\n");
#endif
#if defined(BUILD_WAYLAND_COMPOSITOR)
fprintf(stderr,
"Options for wayland-backend.so:\n\n"
" --width=WIDTH\t\tWidth of Wayland surface\n"
" --height=HEIGHT\tHeight of Wayland surface\n"
" --scale=SCALE\t\tScale factor of output\n"
" --fullscreen\t\tRun in fullscreen mode\n"
" --use-pixman\t\tUse the pixman (CPU) renderer\n"
" --output-count=COUNT\tCreate multiple outputs\n"
" --sprawl\t\tCreate one fullscreen output for every parent output\n"
" --display=DISPLAY\tWayland display to connect to\n\n");
#endif
#if defined(BUILD_X11_COMPOSITOR)
fprintf(stderr,
"Options for x11-backend.so:\n\n"
" --width=WIDTH\t\tWidth of X window\n"
" --height=HEIGHT\tHeight of X window\n"
" --scale=SCALE\t\tScale factor of output\n"
" --fullscreen\t\tRun in fullscreen mode\n"
" --use-pixman\t\tUse the pixman (CPU) renderer\n"
" --output-count=COUNT\tCreate multiple outputs\n"
" --no-input\t\tDont create input devices\n\n");
#endif
exit(error_code);
}
static int on_term_signal(int signal_number, void *data)
{
struct wl_display *display = data;
weston_log("caught signal %d\n", signal_number);
wl_display_terminate(display);
return 1;
}
static const char *
clock_name(clockid_t clk_id)
{
static const char *names[] = {
[CLOCK_REALTIME] = "CLOCK_REALTIME",
[CLOCK_MONOTONIC] = "CLOCK_MONOTONIC",
[CLOCK_MONOTONIC_RAW] = "CLOCK_MONOTONIC_RAW",
[CLOCK_REALTIME_COARSE] = "CLOCK_REALTIME_COARSE",
[CLOCK_MONOTONIC_COARSE] = "CLOCK_MONOTONIC_COARSE",
#ifdef CLOCK_BOOTTIME
[CLOCK_BOOTTIME] = "CLOCK_BOOTTIME",
#endif
};
if (clk_id < 0 || (unsigned)clk_id >= ARRAY_LENGTH(names))
return "unknown";
return names[clk_id];
}
static const struct {
uint32_t bit; /* enum weston_capability */
const char *desc;
} capability_strings[] = {
{ WESTON_CAP_ROTATION_ANY, "arbitrary surface rotation:" },
{ WESTON_CAP_CAPTURE_YFLIP, "screen capture uses y-flip:" },
};
static void
weston_compositor_log_capabilities(struct weston_compositor *compositor)
{
unsigned i;
int yes;
struct timespec res;
weston_log("Compositor capabilities:\n");
for (i = 0; i < ARRAY_LENGTH(capability_strings); i++) {
yes = compositor->capabilities & capability_strings[i].bit;
weston_log_continue(STAMP_SPACE "%s %s\n",
capability_strings[i].desc,
yes ? "yes" : "no");
}
weston_log_continue(STAMP_SPACE "presentation clock: %s, id %d\n",
clock_name(compositor->presentation_clock),
compositor->presentation_clock);
if (clock_getres(compositor->presentation_clock, &res) == 0)
weston_log_continue(STAMP_SPACE
"presentation clock resolution: %d.%09ld s\n",
(int)res.tv_sec, res.tv_nsec);
else
weston_log_continue(STAMP_SPACE
"presentation clock resolution: N/A\n");
}
static void
handle_primary_client_destroyed(struct wl_listener *listener, void *data)
{
struct wl_client *client = data;
weston_log("Primary client died. Closing...\n");
wl_display_terminate(wl_client_get_display(client));
}
static int
weston_create_listening_socket(struct wl_display *display, const char *socket_name)
{
if (socket_name) {
if (wl_display_add_socket(display, socket_name)) {
weston_log("fatal: failed to add socket: %m\n");
return -1;
}
} else {
socket_name = wl_display_add_socket_auto(display);
if (!socket_name) {
weston_log("fatal: failed to add socket: %m\n");
return -1;
}
}
setenv("WAYLAND_DISPLAY", socket_name, 1);
return 0;
}
WL_EXPORT void *
wet_load_module_entrypoint(const char *name, const char *entrypoint)
{
const char *builddir = getenv("WESTON_BUILD_DIR");
char path[PATH_MAX];
void *module, *init;
size_t len;
if (name == NULL)
return NULL;
if (name[0] != '/') {
if (builddir)
len = snprintf(path, sizeof path, "%s/.libs/%s", builddir,
name);
else
len = snprintf(path, sizeof path, "%s/%s", MODULEDIR,
name);
} else {
len = snprintf(path, sizeof path, "%s", name);
}
/* snprintf returns the length of the string it would've written,
* _excluding_ the NUL byte. So even being equal to the size of
* our buffer is an error here. */
if (len >= sizeof path)
return NULL;
module = dlopen(path, RTLD_NOW | RTLD_NOLOAD);
if (module) {
weston_log("Module '%s' already loaded\n", path);
dlclose(module);
return NULL;
}
weston_log("Loading module '%s'\n", path);
module = dlopen(path, RTLD_NOW);
if (!module) {
weston_log("Failed to load module: %s\n", dlerror());
return NULL;
}
init = dlsym(module, entrypoint);
if (!init) {
weston_log("Failed to lookup init function: %s\n", dlerror());
dlclose(module);
return NULL;
}
return init;
}
WL_EXPORT int
wet_load_module(struct weston_compositor *compositor,
const char *name, int *argc, char *argv[])
{
int (*module_init)(struct weston_compositor *ec,
int *argc, char *argv[]);
module_init = wet_load_module_entrypoint(name, "wet_module_init");
if (!module_init)
return -1;
if (module_init(compositor, argc, argv) < 0)
return -1;
return 0;
}
static int
wet_load_shell(struct weston_compositor *compositor,
const char *name, int *argc, char *argv[])
{
int (*shell_init)(struct weston_compositor *ec,
int *argc, char *argv[]);
shell_init = wet_load_module_entrypoint(name, "wet_shell_init");
if (!shell_init)
return -1;
if (shell_init(compositor, argc, argv) < 0)
return -1;
return 0;
}
static int
load_modules(struct weston_compositor *ec, const char *modules,
int *argc, char *argv[], int32_t *xwayland)
{
const char *p, *end;
char buffer[256];
if (modules == NULL)
return 0;
p = modules;
while (*p) {
end = strchrnul(p, ',');
snprintf(buffer, sizeof buffer, "%.*s", (int) (end - p), p);
if (strstr(buffer, "xwayland.so")) {
weston_log("Old Xwayland module loading detected: "
"Please use --xwayland command line option "
"or set xwayland=true in the [core] section "
"in weston.ini\n");
*xwayland = 1;
} else {
if (wet_load_module(ec, buffer, argc, argv) < 0)
return -1;
}
p = end;
while (*p == ',')
p++;
}
return 0;
}
static int
save_touch_device_calibration(struct weston_compositor *compositor,
struct weston_touch_device *device,
const struct weston_touch_device_matrix *calibration)
{
struct weston_config_section *s;
struct weston_config *config = wet_get_config(compositor);
char *helper = NULL;
char *helper_cmd = NULL;
int ret = -1;
int status;
const float *m = calibration->m;
s = weston_config_get_section(config,
"libinput", NULL, NULL);
weston_config_section_get_string(s, "calibration_helper",
&helper, NULL);
if (!helper || strlen(helper) == 0) {
ret = 0;
goto out;
}
if (asprintf(&helper_cmd, "\"%s\" '%s' %f %f %f %f %f %f",
helper, device->syspath,
m[0], m[1], m[2],
m[3], m[4], m[5]) < 0)
goto out;
status = system(helper_cmd);
free(helper_cmd);
if (status < 0) {
weston_log("Error: failed to run calibration helper '%s'.\n",
helper);
goto out;
}
if (!WIFEXITED(status)) {
weston_log("Error: calibration helper '%s' possibly killed.\n",
helper);
goto out;
}
if (WEXITSTATUS(status) == 0) {
ret = 0;
} else {
weston_log("Calibration helper '%s' exited with status %d.\n",
helper, WEXITSTATUS(status));
}
out:
free(helper);
return ret;
}
static int
weston_compositor_init_config(struct weston_compositor *ec,
struct weston_config *config)
{
struct xkb_rule_names xkb_names;
struct weston_config_section *s;
int repaint_msec;
int vt_switching;
int cal;
/* weston.ini [keyboard] */
s = weston_config_get_section(config, "keyboard", NULL, NULL);
weston_config_section_get_string(s, "keymap_rules",
(char **) &xkb_names.rules, NULL);
weston_config_section_get_string(s, "keymap_model",
(char **) &xkb_names.model, NULL);
weston_config_section_get_string(s, "keymap_layout",
(char **) &xkb_names.layout, NULL);
weston_config_section_get_string(s, "keymap_variant",
(char **) &xkb_names.variant, NULL);
weston_config_section_get_string(s, "keymap_options",
(char **) &xkb_names.options, NULL);
if (weston_compositor_set_xkb_rule_names(ec, &xkb_names) < 0)
return -1;
weston_config_section_get_int(s, "repeat-rate",
&ec->kb_repeat_rate, 40);
weston_config_section_get_int(s, "repeat-delay",
&ec->kb_repeat_delay, 400);
weston_config_section_get_bool(s, "vt-switching",
&vt_switching, true);
ec->vt_switching = vt_switching;
/* weston.ini [core] */
s = weston_config_get_section(config, "core", NULL, NULL);
weston_config_section_get_int(s, "repaint-window", &repaint_msec,
ec->repaint_msec);
if (repaint_msec < -10 || repaint_msec > 1000) {
weston_log("Invalid repaint_window value in config: %d\n",
repaint_msec);
} else {
ec->repaint_msec = repaint_msec;
}
weston_log("Output repaint window is %d ms maximum.\n",
ec->repaint_msec);
/* weston.ini [libinput] */
s = weston_config_get_section(config, "libinput", NULL, NULL);
weston_config_section_get_bool(s, "touchscreen_calibrator", &cal, 0);
if (cal)
weston_compositor_enable_touch_calibrator(ec,
save_touch_device_calibration);
return 0;
}
static char *
weston_choose_default_backend(void)
{
char *backend = NULL;
if (getenv("WAYLAND_DISPLAY") || getenv("WAYLAND_SOCKET"))
backend = strdup("wayland-backend.so");
else if (getenv("DISPLAY"))
backend = strdup("x11-backend.so");
else
backend = strdup(WESTON_NATIVE_BACKEND);
return backend;
}
static const struct { const char *name; uint32_t token; } transforms[] = {
{ "normal", WL_OUTPUT_TRANSFORM_NORMAL },
{ "90", WL_OUTPUT_TRANSFORM_90 },
{ "180", WL_OUTPUT_TRANSFORM_180 },
{ "270", WL_OUTPUT_TRANSFORM_270 },
{ "flipped", WL_OUTPUT_TRANSFORM_FLIPPED },
{ "flipped-90", WL_OUTPUT_TRANSFORM_FLIPPED_90 },
{ "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
{ "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
};
WL_EXPORT int
weston_parse_transform(const char *transform, uint32_t *out)
{
unsigned int i;
for (i = 0; i < ARRAY_LENGTH(transforms); i++)
if (strcmp(transforms[i].name, transform) == 0) {
*out = transforms[i].token;
return 0;
}
*out = WL_OUTPUT_TRANSFORM_NORMAL;
return -1;
}
WL_EXPORT const char *
weston_transform_to_string(uint32_t output_transform)
{
unsigned int i;
for (i = 0; i < ARRAY_LENGTH(transforms); i++)
if (transforms[i].token == output_transform)
return transforms[i].name;
return "<illegal value>";
}
static int
load_configuration(struct weston_config **config, int32_t noconfig,
const char *config_file)
{
const char *file = "weston.ini";
const char *full_path;
*config = NULL;
if (config_file)
file = config_file;
if (noconfig == 0)
*config = weston_config_parse(file);
if (*config) {
full_path = weston_config_get_full_path(*config);
weston_log("Using config file '%s'\n", full_path);
setenv(WESTON_CONFIG_FILE_ENV_VAR, full_path, 1);
return 0;
}
if (config_file && noconfig == 0) {
weston_log("fatal: error opening or reading config file"
" '%s'.\n", config_file);
return -1;
}
weston_log("Starting with no config file.\n");
setenv(WESTON_CONFIG_FILE_ENV_VAR, "", 1);
return 0;
}
static void
handle_exit(struct weston_compositor *c)
{
wl_display_terminate(c->wl_display);
}
static void
wet_output_set_scale(struct weston_output *output,
struct weston_config_section *section,
int32_t default_scale,
int32_t parsed_scale)
{
int32_t scale = default_scale;
if (section)
weston_config_section_get_int(section, "scale", &scale, default_scale);
if (parsed_scale)
scale = parsed_scale;
weston_output_set_scale(output, scale);
}
/* UINT32_MAX is treated as invalid because 0 is a valid
* enumeration value and the parameter is unsigned
*/
static void
wet_output_set_transform(struct weston_output *output,
struct weston_config_section *section,
uint32_t default_transform,
uint32_t parsed_transform)
{
char *t;
uint32_t transform = default_transform;
if (section) {
weston_config_section_get_string(section,
"transform", &t, "normal");
if (weston_parse_transform(t, &transform) < 0) {
weston_log("Invalid transform \"%s\" for output %s\n",
t, output->name);
transform = default_transform;
}
free(t);
}
if (parsed_transform != UINT32_MAX)
transform = parsed_transform;
weston_output_set_transform(output, transform);
}
static int
wet_configure_windowed_output_from_config(struct weston_output *output,
struct wet_output_config *defaults)
{
const struct weston_windowed_output_api *api =
weston_windowed_output_get_api(output->compositor);
struct weston_config *wc = wet_get_config(output->compositor);
struct weston_config_section *section = NULL;
struct wet_compositor *compositor = to_wet_compositor(output->compositor);
struct wet_output_config *parsed_options = compositor->parsed_options;
int width = defaults->width;
int height = defaults->height;
assert(parsed_options);
if (!api) {
weston_log("Cannot use weston_windowed_output_api.\n");
return -1;
}
section = weston_config_get_section(wc, "output", "name", output->name);
if (section) {
char *mode;
weston_config_section_get_string(section, "mode", &mode, NULL);
if (!mode || sscanf(mode, "%dx%d", &width,
&height) != 2) {
weston_log("Invalid mode for output %s. Using defaults.\n",
output->name);
width = defaults->width;
height = defaults->height;
}
free(mode);
}
if (parsed_options->width)
width = parsed_options->width;
if (parsed_options->height)
height = parsed_options->height;
wet_output_set_scale(output, section, defaults->scale, parsed_options->scale);
wet_output_set_transform(output, section, defaults->transform, parsed_options->transform);
if (api->output_set_size(output, width, height) < 0) {
weston_log("Cannot configure output \"%s\" using weston_windowed_output_api.\n",
output->name);
return -1;
}
return 0;
}
static int
count_remaining_heads(struct weston_output *output, struct weston_head *to_go)
{
struct weston_head *iter = NULL;
int n = 0;
while ((iter = weston_output_iterate_heads(output, iter))) {
if (iter != to_go)
n++;
}
return n;
}
static void
wet_head_tracker_destroy(struct wet_head_tracker *track)
{
wl_list_remove(&track->head_destroy_listener.link);
free(track);
}
static void
handle_head_destroy(struct wl_listener *listener, void *data)
{
struct weston_head *head = data;
struct weston_output *output;
struct wet_head_tracker *track =
container_of(listener, struct wet_head_tracker,
head_destroy_listener);
wet_head_tracker_destroy(track);
output = weston_head_get_output(head);
/* On shutdown path, the output might be already gone. */
if (!output)
return;
if (count_remaining_heads(output, head) > 0)
return;
weston_output_destroy(output);
}
static struct wet_head_tracker *
wet_head_tracker_from_head(struct weston_head *head)
{
struct wl_listener *lis;
lis = weston_head_get_destroy_listener(head, handle_head_destroy);
if (!lis)
return NULL;
return container_of(lis, struct wet_head_tracker,
head_destroy_listener);
}
/* Listen for head destroy signal.
*
* If a head is destroyed and it was the last head on the output, we
* destroy the associated output.
*
* Do not bother destroying the head trackers on shutdown, the backend will
* destroy the heads which calls our handler to destroy the trackers.
*/
static void
wet_head_tracker_create(struct wet_compositor *compositor,
struct weston_head *head)
{
struct wet_head_tracker *track;
track = zalloc(sizeof *track);
if (!track)
return;
track->head_destroy_listener.notify = handle_head_destroy;
weston_head_add_destroy_listener(head, &track->head_destroy_listener);
}
static void
simple_head_enable(struct wet_compositor *wet, struct weston_head *head)
{
struct weston_output *output;
int ret = 0;
/* Workaround for repeated DRM backend "off" setting.
* For any other case, we should not have an attached head that is not
* enabled. */
if (weston_head_get_output(head))
return;
output = weston_compositor_create_output_with_head(wet->compositor,
head);
if (!output) {
weston_log("Could not create an output for head \"%s\".\n",
weston_head_get_name(head));
wet->init_failed = true;
return;
}
if (wet->simple_output_configure)
ret = wet->simple_output_configure(output);
if (ret < 0) {
weston_log("Cannot configure output \"%s\".\n",
weston_head_get_name(head));
weston_output_destroy(output);
wet->init_failed = true;
return;
}
/* Escape hatch for DRM backend "off" setting. */
if (ret > 0)
return;
if (weston_output_enable(output) < 0) {
weston_log("Enabling output \"%s\" failed.\n",
weston_head_get_name(head));
weston_output_destroy(output);
wet->init_failed = true;
return;
}
wet_head_tracker_create(wet, head);
/* The weston_compositor will track and destroy the output on exit. */
}
static void
simple_head_disable(struct weston_head *head)
{
struct weston_output *output;
struct wet_head_tracker *track;
track = wet_head_tracker_from_head(head);
if (track)
wet_head_tracker_destroy(track);
output = weston_head_get_output(head);
assert(output);
weston_output_destroy(output);
}
static void
simple_heads_changed(struct wl_listener *listener, void *arg)
{
struct weston_compositor *compositor = arg;
struct wet_compositor *wet = to_wet_compositor(compositor);
struct weston_head *head = NULL;
bool connected;
bool enabled;
bool changed;
while ((head = weston_compositor_iterate_heads(wet->compositor, head))) {
connected = weston_head_is_connected(head);
enabled = weston_head_is_enabled(head);
changed = weston_head_is_device_changed(head);
if (connected && !enabled) {
simple_head_enable(wet, head);
} else if (!connected && enabled) {
simple_head_disable(head);
} else if (enabled && changed) {
weston_log("Detected a monitor change on head '%s', "
"not bothering to do anything about it.\n",
weston_head_get_name(head));
}
weston_head_reset_device_changed(head);
}
}
static void
wet_set_simple_head_configurator(struct weston_compositor *compositor,
int (*fn)(struct weston_output *))
{
struct wet_compositor *wet = to_wet_compositor(compositor);
wet->simple_output_configure = fn;
wet->heads_changed_listener.notify = simple_heads_changed;
weston_compositor_add_heads_changed_listener(compositor,
&wet->heads_changed_listener);
}
static void
configure_input_device(struct weston_compositor *compositor,
struct libinput_device *device)
{
struct weston_config_section *s;
struct weston_config *config = wet_get_config(compositor);
int enable_tap;
int enable_tap_default;
s = weston_config_get_section(config,
"libinput", NULL, NULL);
if (libinput_device_config_tap_get_finger_count(device) > 0) {
enable_tap_default =
libinput_device_config_tap_get_default_enabled(
device);
weston_config_section_get_bool(s, "enable_tap",
&enable_tap,
enable_tap_default);
libinput_device_config_tap_set_enabled(device,
enable_tap);
}
}
static int
drm_backend_output_configure(struct weston_output *output)
{
struct weston_config *wc = wet_get_config(output->compositor);
struct wet_compositor *wet = to_wet_compositor(output->compositor);
struct weston_config_section *section;
const struct weston_drm_output_api *api = weston_drm_output_get_api(output->compositor);
enum weston_drm_backend_output_mode mode =
WESTON_DRM_BACKEND_OUTPUT_PREFERRED;
char *s;
char *modeline = NULL;
char *gbm_format = NULL;
char *seat = NULL;
if (!api) {
weston_log("Cannot use weston_drm_output_api.\n");
return -1;
}
section = weston_config_get_section(wc, "output", "name", output->name);
weston_config_section_get_string(section, "mode", &s, "preferred");
if (strcmp(s, "off") == 0) {
weston_output_disable(output);
free(s);
return 1;
} else if (wet->drm_use_current_mode || strcmp(s, "current") == 0) {
mode = WESTON_DRM_BACKEND_OUTPUT_CURRENT;
} else if (strcmp(s, "preferred") != 0) {
modeline = s;
s = NULL;
}
free(s);
if (api->set_mode(output, mode, modeline) < 0) {
weston_log("Cannot configure an output using weston_drm_output_api.\n");
free(modeline);
return -1;
}
free(modeline);
wet_output_set_scale(output, section, 1, 0);
wet_output_set_transform(output, section, WL_OUTPUT_TRANSFORM_NORMAL, UINT32_MAX);
weston_config_section_get_string(section,
"gbm-format", &gbm_format, NULL);
api->set_gbm_format(output, gbm_format);
free(gbm_format);
weston_config_section_get_string(section, "seat", &seat, "");
api->set_seat(output, seat);
free(seat);
return 0;
}
static int
load_drm_backend(struct weston_compositor *c,
int *argc, char **argv, struct weston_config *wc)
{
struct weston_drm_backend_config config = {{ 0, }};
struct weston_config_section *section;
struct wet_compositor *wet = to_wet_compositor(c);
int use_shadow;
int ret = 0;
wet->drm_use_current_mode = false;
const struct weston_option options[] = {
{ WESTON_OPTION_STRING, "seat", 0, &config.seat_id },
{ WESTON_OPTION_INTEGER, "tty", 0, &config.tty },
{ WESTON_OPTION_STRING, "drm-device", 0, &config.specific_device },
{ WESTON_OPTION_BOOLEAN, "current-mode", 0, &wet->drm_use_current_mode },
{ WESTON_OPTION_BOOLEAN, "use-pixman", 0, &config.use_pixman },
};
parse_options(options, ARRAY_LENGTH(options), argc, argv);
section = weston_config_get_section(wc, "core", NULL, NULL);
weston_config_section_get_string(section,
"gbm-format", &config.gbm_format,
NULL);
weston_config_section_get_uint(section, "pageflip-timeout",
&config.pageflip_timeout, 0);
weston_config_section_get_bool(section, "pixman-shadow", &use_shadow, 1);
config.use_pixman_shadow = use_shadow;
config.base.struct_version = WESTON_DRM_BACKEND_CONFIG_VERSION;
config.base.struct_size = sizeof(struct weston_drm_backend_config);
config.configure_device = configure_input_device;
wet_set_simple_head_configurator(c, drm_backend_output_configure);
ret = weston_compositor_load_backend(c, WESTON_BACKEND_DRM,
&config.base);
free(config.gbm_format);
free(config.seat_id);
return ret;
}
static int
headless_backend_output_configure(struct weston_output *output)
{
struct wet_output_config defaults = {
.width = 1024,
.height = 640,
.scale = 1,
.transform = WL_OUTPUT_TRANSFORM_NORMAL
};
return wet_configure_windowed_output_from_config(output, &defaults);
}
static int
load_headless_backend(struct weston_compositor *c,
int *argc, char **argv, struct weston_config *wc)
{
const struct weston_windowed_output_api *api;
struct weston_headless_backend_config config = {{ 0, }};
int no_outputs = 0;
int ret = 0;
char *transform = NULL;
struct wet_output_config *parsed_options = wet_init_parsed_options(c);
if (!parsed_options)
return -1;
const struct weston_option options[] = {
{ WESTON_OPTION_INTEGER, "width", 0, &parsed_options->width },
{ WESTON_OPTION_INTEGER, "height", 0, &parsed_options->height },
{ WESTON_OPTION_BOOLEAN, "use-pixman", 0, &config.use_pixman },
{ WESTON_OPTION_STRING, "transform", 0, &transform },
{ WESTON_OPTION_BOOLEAN, "no-outputs", 0, &no_outputs },
};
parse_options(options, ARRAY_LENGTH(options), argc, argv);
if (transform) {
if (weston_parse_transform(transform, &parsed_options->transform) < 0) {
weston_log("Invalid transform \"%s\"\n", transform);
parsed_options->transform = UINT32_MAX;
}
free(transform);
}
config.base.struct_version = WESTON_HEADLESS_BACKEND_CONFIG_VERSION;
config.base.struct_size = sizeof(struct weston_headless_backend_config);
wet_set_simple_head_configurator(c, headless_backend_output_configure);
/* load the actual wayland backend and configure it */
ret = weston_compositor_load_backend(c, WESTON_BACKEND_HEADLESS,
&config.base);
if (ret < 0)
return ret;
if (!no_outputs) {
api = weston_windowed_output_get_api(c);
if (!api) {
weston_log("Cannot use weston_windowed_output_api.\n");
return -1;
}
if (api->create_head(c, "headless") < 0)
return -1;
}
return 0;
}
static int
rdp_backend_output_configure(struct weston_output *output)
{
struct wet_compositor *compositor = to_wet_compositor(output->compositor);
struct wet_output_config *parsed_options = compositor->parsed_options;
const struct weston_rdp_output_api *api = weston_rdp_output_get_api(output->compositor);
int width = 640;
int height = 480;
assert(parsed_options);
if (!api) {
weston_log("Cannot use weston_rdp_output_api.\n");
return -1;
}
if (parsed_options->width)
width = parsed_options->width;
if (parsed_options->height)
height = parsed_options->height;
weston_output_set_scale(output, 1);
weston_output_set_transform(output, WL_OUTPUT_TRANSFORM_NORMAL);
if (api->output_set_size(output, width, height) < 0) {
weston_log("Cannot configure output \"%s\" using weston_rdp_output_api.\n",
output->name);
return -1;
}
return 0;
}
static void
weston_rdp_backend_config_init(struct weston_rdp_backend_config *config)
{
config->base.struct_version = WESTON_RDP_BACKEND_CONFIG_VERSION;
config->base.struct_size = sizeof(struct weston_rdp_backend_config);
config->bind_address = NULL;
config->port = 3389;
config->rdp_key = NULL;
config->server_cert = NULL;
config->server_key = NULL;
config->env_socket = 0;
config->no_clients_resize = 0;
}
static int
load_rdp_backend(struct weston_compositor *c,
int *argc, char *argv[], struct weston_config *wc)
{
struct weston_rdp_backend_config config = {{ 0, }};
int ret = 0;
struct wet_output_config *parsed_options = wet_init_parsed_options(c);
if (!parsed_options)
return -1;
weston_rdp_backend_config_init(&config);
const struct weston_option rdp_options[] = {
{ WESTON_OPTION_BOOLEAN, "env-socket", 0, &config.env_socket },
{ WESTON_OPTION_INTEGER, "width", 0, &parsed_options->width },
{ WESTON_OPTION_INTEGER, "height", 0, &parsed_options->height },
{ WESTON_OPTION_STRING, "address", 0, &config.bind_address },
{ WESTON_OPTION_INTEGER, "port", 0, &config.port },
{ WESTON_OPTION_BOOLEAN, "no-clients-resize", 0, &config.no_clients_resize },
{ WESTON_OPTION_STRING, "rdp4-key", 0, &config.rdp_key },
{ WESTON_OPTION_STRING, "rdp-tls-cert", 0, &config.server_cert },
{ WESTON_OPTION_STRING, "rdp-tls-key", 0, &config.server_key }
};
parse_options(rdp_options, ARRAY_LENGTH(rdp_options), argc, argv);
wet_set_simple_head_configurator(c, rdp_backend_output_configure);
ret = weston_compositor_load_backend(c, WESTON_BACKEND_RDP,
&config.base);
free(config.bind_address);
free(config.rdp_key);
free(config.server_cert);
free(config.server_key);
return ret;
}
static int
fbdev_backend_output_configure(struct weston_output *output)
{
struct weston_config *wc = wet_get_config(output->compositor);
struct weston_config_section *section;
section = weston_config_get_section(wc, "output", "name", "fbdev");
wet_output_set_transform(output, section, WL_OUTPUT_TRANSFORM_NORMAL, UINT32_MAX);
weston_output_set_scale(output, 1);
return 0;
}
static int
load_fbdev_backend(struct weston_compositor *c,
int *argc, char **argv, struct weston_config *wc)
{
struct weston_fbdev_backend_config config = {{ 0, }};
int ret = 0;
const struct weston_option fbdev_options[] = {
{ WESTON_OPTION_INTEGER, "tty", 0, &config.tty },
{ WESTON_OPTION_STRING, "device", 0, &config.device },
};
parse_options(fbdev_options, ARRAY_LENGTH(fbdev_options), argc, argv);
if (!config.device)
config.device = strdup("/dev/fb0");
config.base.struct_version = WESTON_FBDEV_BACKEND_CONFIG_VERSION;
config.base.struct_size = sizeof(struct weston_fbdev_backend_config);
config.configure_device = configure_input_device;
wet_set_simple_head_configurator(c, fbdev_backend_output_configure);
/* load the actual wayland backend and configure it */
ret = weston_compositor_load_backend(c, WESTON_BACKEND_FBDEV,
&config.base);
free(config.device);
return ret;
}
static int
x11_backend_output_configure(struct weston_output *output)
{
struct wet_output_config defaults = {
.width = 1024,
.height = 600,
.scale = 1,
.transform = WL_OUTPUT_TRANSFORM_NORMAL
};
return wet_configure_windowed_output_from_config(output, &defaults);
}
static int
load_x11_backend(struct weston_compositor *c,
int *argc, char **argv, struct weston_config *wc)
{
char *default_output;
const struct weston_windowed_output_api *api;
struct weston_x11_backend_config config = {{ 0, }};
struct weston_config_section *section;
int ret = 0;
int option_count = 1;
int output_count = 0;
char const *section_name;
int i;
struct wet_output_config *parsed_options = wet_init_parsed_options(c);
if (!parsed_options)
return -1;
const struct weston_option options[] = {
{ WESTON_OPTION_INTEGER, "width", 0, &parsed_options->width },
{ WESTON_OPTION_INTEGER, "height", 0, &parsed_options->height },
{ WESTON_OPTION_INTEGER, "scale", 0, &parsed_options->scale },
{ WESTON_OPTION_BOOLEAN, "fullscreen", 'f', &config.fullscreen },
{ WESTON_OPTION_INTEGER, "output-count", 0, &option_count },
{ WESTON_OPTION_BOOLEAN, "no-input", 0, &config.no_input },
{ WESTON_OPTION_BOOLEAN, "use-pixman", 0, &config.use_pixman },
};
parse_options(options, ARRAY_LENGTH(options), argc, argv);
config.base.struct_version = WESTON_X11_BACKEND_CONFIG_VERSION;
config.base.struct_size = sizeof(struct weston_x11_backend_config);
wet_set_simple_head_configurator(c, x11_backend_output_configure);
/* load the actual backend and configure it */
ret = weston_compositor_load_backend(c, WESTON_BACKEND_X11,
&config.base);
if (ret < 0)
return ret;
api = weston_windowed_output_get_api(c);
if (!api) {
weston_log("Cannot use weston_windowed_output_api.\n");
return -1;
}
section = NULL;
while (weston_config_next_section(wc, &section, &section_name)) {
char *output_name;
if (output_count >= option_count)
break;
if (strcmp(section_name, "output") != 0) {
continue;
}
weston_config_section_get_string(section, "name", &output_name, NULL);
if (output_name == NULL || output_name[0] != 'X') {
free(output_name);
continue;
}
if (api->create_head(c, output_name) < 0) {
free(output_name);
return -1;
}
free(output_name);
output_count++;
}
default_output = NULL;
for (i = output_count; i < option_count; i++) {
if (asprintf(&default_output, "screen%d", i) < 0) {
return -1;
}
if (api->create_head(c, default_output) < 0) {
free(default_output);
return -1;
}
free(default_output);
}
return 0;
}
static int
wayland_backend_output_configure(struct weston_output *output)
{
struct wet_output_config defaults = {
.width = 1024,
.height = 640,
.scale = 1,
.transform = WL_OUTPUT_TRANSFORM_NORMAL
};
return wet_configure_windowed_output_from_config(output, &defaults);
}
static int
load_wayland_backend(struct weston_compositor *c,
int *argc, char **argv, struct weston_config *wc)
{
struct weston_wayland_backend_config config = {{ 0, }};
struct weston_config_section *section;
const struct weston_windowed_output_api *api;
const char *section_name;
char *output_name = NULL;
int count = 1;
int ret = 0;
int i;
int32_t use_pixman_ = 0;
int32_t sprawl_ = 0;
int32_t fullscreen_ = 0;
struct wet_output_config *parsed_options = wet_init_parsed_options(c);
if (!parsed_options)
return -1;
config.cursor_size = 32;
config.cursor_theme = NULL;
config.display_name = NULL;
const struct weston_option wayland_options[] = {
{ WESTON_OPTION_INTEGER, "width", 0, &parsed_options->width },
{ WESTON_OPTION_INTEGER, "height", 0, &parsed_options->height },
{ WESTON_OPTION_INTEGER, "scale", 0, &parsed_options->scale },
{ WESTON_OPTION_STRING, "display", 0, &config.display_name },
{ WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman_ },
{ WESTON_OPTION_INTEGER, "output-count", 0, &count },
{ WESTON_OPTION_BOOLEAN, "fullscreen", 0, &fullscreen_ },
{ WESTON_OPTION_BOOLEAN, "sprawl", 0, &sprawl_ },
};
parse_options(wayland_options, ARRAY_LENGTH(wayland_options), argc, argv);
config.sprawl = sprawl_;
config.use_pixman = use_pixman_;
config.fullscreen = fullscreen_;
section = weston_config_get_section(wc, "shell", NULL, NULL);
weston_config_section_get_string(section, "cursor-theme",
&config.cursor_theme, NULL);
weston_config_section_get_int(section, "cursor-size",
&config.cursor_size, 32);
config.base.struct_size = sizeof(struct weston_wayland_backend_config);
config.base.struct_version = WESTON_WAYLAND_BACKEND_CONFIG_VERSION;
/* load the actual wayland backend and configure it */
ret = weston_compositor_load_backend(c, WESTON_BACKEND_WAYLAND,
&config.base);
free(config.cursor_theme);
free(config.display_name);
if (ret < 0)
return ret;
api = weston_windowed_output_get_api(c);
if (api == NULL) {
/* We will just assume if load_backend() finished cleanly and
* windowed_output_api is not present that wayland backend is
* started with --sprawl or runs on fullscreen-shell.
* In this case, all values are hardcoded, so nothing can be
* configured; simply create and enable an output. */
wet_set_simple_head_configurator(c, NULL);
return 0;
}
wet_set_simple_head_configurator(c, wayland_backend_output_configure);
section = NULL;
while (weston_config_next_section(wc, &section, &section_name)) {
if (count == 0)
break;
if (strcmp(section_name, "output") != 0) {
continue;
}
weston_config_section_get_string(section, "name", &output_name, NULL);
if (output_name == NULL)
continue;
if (output_name[0] != 'W' || output_name[1] != 'L') {
free(output_name);
continue;
}
if (api->create_head(c, output_name) < 0) {
free(output_name);
return -1;
}
free(output_name);
--count;
}
for (i = 0; i < count; i++) {
if (asprintf(&output_name, "wayland%d", i) < 0)
return -1;
if (api->create_head(c, output_name) < 0) {
free(output_name);
return -1;
}
free(output_name);
}
return 0;
}
static int
load_backend(struct weston_compositor *compositor, const char *backend,
int *argc, char **argv, struct weston_config *config)
{
if (strstr(backend, "headless-backend.so"))
return load_headless_backend(compositor, argc, argv, config);
else if (strstr(backend, "rdp-backend.so"))
return load_rdp_backend(compositor, argc, argv, config);
else if (strstr(backend, "fbdev-backend.so"))
return load_fbdev_backend(compositor, argc, argv, config);
else if (strstr(backend, "drm-backend.so"))
return load_drm_backend(compositor, argc, argv, config);
else if (strstr(backend, "x11-backend.so"))
return load_x11_backend(compositor, argc, argv, config);
else if (strstr(backend, "wayland-backend.so"))
return load_wayland_backend(compositor, argc, argv, config);
weston_log("Error: unknown backend \"%s\"\n", backend);
return -1;
}
static char *
copy_command_line(int argc, char * const argv[])
{
FILE *fp;
char *str = NULL;
size_t size = 0;
int i;
fp = open_memstream(&str, &size);
if (!fp)
return NULL;
fprintf(fp, "%s", argv[0]);
for (i = 1; i < argc; i++)
fprintf(fp, " %s", argv[i]);
fclose(fp);
return str;
}
int main(int argc, char *argv[])
{
int ret = EXIT_FAILURE;
char *cmdline;
struct wl_display *display;
struct wl_event_source *signals[4];
struct wl_event_loop *loop;
int i, fd;
char *backend = NULL;
char *shell = NULL;
int32_t xwayland = 0;
char *modules = NULL;
char *option_modules = NULL;
char *log = NULL;
char *server_socket = NULL;
int32_t idle_time = -1;
int32_t help = 0;
char *socket_name = NULL;
int32_t version = 0;
int32_t noconfig = 0;
int32_t numlock_on;
char *config_file = NULL;
struct weston_config *config = NULL;
struct weston_config_section *section;
struct wl_client *primary_client;
struct wl_listener primary_client_destroyed;
struct weston_seat *seat;
struct wet_compositor wet = { 0 };
int require_input;
int32_t wait_for_debugger = 0;
const struct weston_option core_options[] = {
{ WESTON_OPTION_STRING, "backend", 'B', &backend },
{ WESTON_OPTION_STRING, "shell", 0, &shell },
{ WESTON_OPTION_STRING, "socket", 'S', &socket_name },
{ WESTON_OPTION_INTEGER, "idle-time", 'i', &idle_time },
{ WESTON_OPTION_BOOLEAN, "xwayland", 0, &xwayland },
{ WESTON_OPTION_STRING, "modules", 0, &option_modules },
{ WESTON_OPTION_STRING, "log", 0, &log },
{ WESTON_OPTION_BOOLEAN, "help", 'h', &help },
{ WESTON_OPTION_BOOLEAN, "version", 0, &version },
{ WESTON_OPTION_BOOLEAN, "no-config", 0, &noconfig },
{ WESTON_OPTION_STRING, "config", 'c', &config_file },
{ WESTON_OPTION_BOOLEAN, "wait-for-debugger", 0, &wait_for_debugger },
};
if (os_fd_set_cloexec(fileno(stdin))) {
printf("Unable to set stdin as close on exec().\n");
return EXIT_FAILURE;
}
cmdline = copy_command_line(argc, argv);
parse_options(core_options, ARRAY_LENGTH(core_options), &argc, argv);
if (help) {
free(cmdline);
usage(EXIT_SUCCESS);
}
if (version) {
printf(PACKAGE_STRING "\n");
free(cmdline);
return EXIT_SUCCESS;
}
weston_log_set_handler(vlog, vlog_continue);
weston_log_file_open(log);
weston_log("%s\n"
STAMP_SPACE "%s\n"
STAMP_SPACE "Bug reports to: %s\n"
STAMP_SPACE "Build: %s\n",
PACKAGE_STRING, PACKAGE_URL, PACKAGE_BUGREPORT,
BUILD_ID);
weston_log("Command line: %s\n", cmdline);
free(cmdline);
log_uname();
verify_xdg_runtime_dir();
display = wl_display_create();
loop = wl_display_get_event_loop(display);
signals[0] = wl_event_loop_add_signal(loop, SIGTERM, on_term_signal,
display);
signals[1] = wl_event_loop_add_signal(loop, SIGINT, on_term_signal,
display);
signals[2] = wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal,
display);
wl_list_init(&child_process_list);
signals[3] = wl_event_loop_add_signal(loop, SIGCHLD, sigchld_handler,
NULL);
if (!signals[0] || !signals[1] || !signals[2] || !signals[3])
goto out_signals;
if (load_configuration(&config, noconfig, config_file) < 0)
goto out_signals;
wet.config = config;
wet.parsed_options = NULL;
section = weston_config_get_section(config, "core", NULL, NULL);
if (!wait_for_debugger)
weston_config_section_get_bool(section, "wait-for-debugger",
&wait_for_debugger, 0);
if (wait_for_debugger) {
weston_log("Weston PID is %ld - "
"waiting for debugger, send SIGCONT to continue...\n",
(long)getpid());
raise(SIGSTOP);
}
if (!backend) {
weston_config_section_get_string(section, "backend", &backend,
NULL);
if (!backend)
backend = weston_choose_default_backend();
}
wet.compositor = weston_compositor_create(display, &wet);
if (wet.compositor == NULL) {
weston_log("fatal: failed to create compositor\n");
goto out;
}
segv_compositor = wet.compositor;
if (weston_compositor_init_config(wet.compositor, config) < 0)
goto out;
weston_config_section_get_bool(section, "require-input",
&require_input, true);
wet.compositor->require_input = require_input;
if (load_backend(wet.compositor, backend, &argc, argv, config) < 0) {
weston_log("fatal: failed to create compositor backend\n");
goto out;
}
weston_compositor_flush_heads_changed(wet.compositor);
if (wet.init_failed)
goto out;
if (idle_time < 0)
weston_config_section_get_int(section, "idle-time", &idle_time, -1);
if (idle_time < 0)
idle_time = 300; /* default idle timeout, in seconds */
wet.compositor->idle_time = idle_time;
wet.compositor->default_pointer_grab = NULL;
wet.compositor->exit = handle_exit;
weston_compositor_log_capabilities(wet.compositor);
server_socket = getenv("WAYLAND_SERVER_SOCKET");
if (server_socket) {
weston_log("Running with single client\n");
if (!safe_strtoint(server_socket, &fd))
fd = -1;
} else {
fd = -1;
}
if (fd != -1) {
primary_client = wl_client_create(display, fd);
if (!primary_client) {
weston_log("fatal: failed to add client: %m\n");
goto out;
}
primary_client_destroyed.notify =
handle_primary_client_destroyed;
wl_client_add_destroy_listener(primary_client,
&primary_client_destroyed);
} else if (weston_create_listening_socket(display, socket_name)) {
goto out;
}
if (!shell)
weston_config_section_get_string(section, "shell", &shell,
"desktop-shell.so");
if (wet_load_shell(wet.compositor, shell, &argc, argv) < 0)
goto out;
weston_config_section_get_string(section, "modules", &modules, "");
if (load_modules(wet.compositor, modules, &argc, argv, &xwayland) < 0)
goto out;
if (load_modules(wet.compositor, option_modules, &argc, argv, &xwayland) < 0)
goto out;
if (!xwayland)
weston_config_section_get_bool(section, "xwayland", &xwayland,
false);
if (xwayland) {
if (wet_load_xwayland(wet.compositor) < 0)
goto out;
}
section = weston_config_get_section(config, "keyboard", NULL, NULL);
weston_config_section_get_bool(section, "numlock-on", &numlock_on, 0);
if (numlock_on) {
wl_list_for_each(seat, &wet.compositor->seat_list, link) {
struct weston_keyboard *keyboard =
weston_seat_get_keyboard(seat);
if (keyboard)
weston_keyboard_set_locks(keyboard,
WESTON_NUM_LOCK,
WESTON_NUM_LOCK);
}
}
for (i = 1; i < argc; i++)
weston_log("fatal: unhandled option: %s\n", argv[i]);
if (argc > 1)
goto out;
weston_compositor_wake(wet.compositor);
wl_display_run(display);
/* Allow for setting return exit code after
* wl_display_run returns normally. This is
* useful for devs/testers and automated tests
* that want to indicate failure status to
* testing infrastructure above
*/
ret = wet.compositor->exit_code;
out:
/* free(NULL) is valid, and it won't be NULL if it's used */
free(wet.parsed_options);
weston_compositor_destroy(wet.compositor);
out_signals:
for (i = ARRAY_LENGTH(signals) - 1; i >= 0; i--)
if (signals[i])
wl_event_source_remove(signals[i]);
wl_display_destroy(display);
weston_log_file_close();
if (config)
weston_config_destroy(config);
free(config_file);
free(backend);
free(shell);
free(socket_name);
free(option_modules);
free(log);
free(modules);
return ret;
}