forked from IcebergThings/weston
/
main.c
3488 lines (2889 loc) · 89.6 KB
/
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 <libevdev/libevdev.h>
#include <linux/input.h>
#include <sys/time.h>
#include <linux/limits.h>
#include "weston.h"
#include <libweston/libweston.h>
#include "shared/os-compatibility.h"
#include "shared/helpers.h"
#include "shared/string-helpers.h"
#include "git-version.h"
#include <libweston/version.h>
#include "weston.h"
#include <libweston/backend-drm.h>
#include <libweston/backend-headless.h>
#include <libweston/backend-rdp.h>
#include <libweston/backend-fbdev.h>
#include <libweston/backend-x11.h>
#include <libweston/backend-wayland.h>
#include <libweston/windowed-output-api.h>
#include <libweston/weston-log.h>
#include "../remoting/remoting-plugin.h"
#include "../pipewire/pipewire-plugin.h"
#define WINDOW_TITLE "Weston Compositor"
/* flight recorder size (in bytes) */
#define DEFAULT_FLIGHT_REC_SIZE (5 * 1024 * 1024)
struct wet_output_config {
int width;
int height;
int32_t scale;
uint32_t transform;
};
struct wet_compositor;
struct wet_layoutput;
struct wet_head_tracker {
struct wl_listener head_destroy_listener;
};
/** User data for each weston_output */
struct wet_output {
struct weston_output *output;
struct wl_listener output_destroy_listener;
struct wet_layoutput *layoutput;
struct wl_list link; /**< in wet_layoutput::output_list */
};
#define MAX_CLONE_HEADS 16
struct wet_head_array {
struct weston_head *heads[MAX_CLONE_HEADS]; /**< heads to add */
unsigned n; /**< the number of heads */
};
/** A layout output
*
* Contains wet_outputs that are all clones (independent CRTCs).
* Stores output layout information in the future.
*/
struct wet_layoutput {
struct wet_compositor *compositor;
struct wl_list compositor_link; /**< in wet_compositor::layoutput_list */
struct wl_list output_list; /**< wet_output::link */
char *name;
struct weston_config_section *section;
struct wet_head_array add; /**< tmp: heads to add as clones */
};
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;
struct wl_list layoutput_list; /**< wet_layoutput::compositor_link */
};
static FILE *weston_logfile = NULL;
static struct weston_log_scope *log_scope;
static struct weston_log_scope *protocol_scope;
static int cached_tm_mday = -1;
static char *
weston_log_timestamp(char *buf, size_t len)
{
struct timeval tv;
struct tm *brokendown_time;
char datestr[128];
char timestr[128];
gettimeofday(&tv, NULL);
brokendown_time = localtime(&tv.tv_sec);
if (brokendown_time == NULL) {
snprintf(buf, len, "%s", "[(NULL)localtime] ");
return buf;
}
memset(datestr, 0, sizeof(datestr));
if (brokendown_time->tm_mday != cached_tm_mday) {
strftime(datestr, sizeof(datestr), "Date: %Y-%m-%d %Z\n",
brokendown_time);
cached_tm_mday = brokendown_time->tm_mday;
}
strftime(timestr, sizeof(timestr), "%H:%M:%S", brokendown_time);
/* if datestr is empty it prints only timestr*/
snprintf(buf, len, "%s[%s.%03li]", datestr,
timestr, (tv.tv_usec / 1000));
return buf;
}
static void
custom_handler(const char *fmt, va_list arg)
{
char timestr[512];
weston_log_scope_printf(log_scope, "%s libwayland: ",
weston_log_timestamp(timestr,
sizeof(timestr)));
weston_log_scope_vprintf(log_scope, fmt, arg);
}
static bool
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));
} else {
fprintf(stderr, "Failed to open %s: %s\n", filename, strerror(errno));
return false;
}
}
if (weston_logfile == NULL)
weston_logfile = stderr;
else
setvbuf(weston_logfile, NULL, _IOLBF, 256);
return true;
}
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)
{
const char *oom = "Out of memory";
char timestr[128];
int len = 0;
char *str;
if (weston_log_scope_is_enabled(log_scope)) {
int len_va;
char *log_timestamp = weston_log_timestamp(timestr,
sizeof(timestr));
len_va = vasprintf(&str, fmt, ap);
if (len_va >= 0) {
len = weston_log_scope_printf(log_scope, "%s %s",
log_timestamp, str);
free(str);
} else {
len = weston_log_scope_printf(log_scope, "%s %s",
log_timestamp, oom);
}
}
return len;
}
static int
vlog_continue(const char *fmt, va_list argp)
{
return weston_log_scope_vprintf(log_scope, fmt, argp);
}
static const char *
get_next_argument(const char *signature, char* type)
{
for(; *signature; ++signature) {
switch(*signature) {
case 'i':
case 'u':
case 'f':
case 's':
case 'o':
case 'n':
case 'a':
case 'h':
*type = *signature;
return signature + 1;
}
}
*type = '\0';
return signature;
}
static void
protocol_log_fn(void *user_data,
enum wl_protocol_logger_type direction,
const struct wl_protocol_logger_message *message)
{
FILE *fp;
char *logstr;
size_t logsize;
char timestr[128];
struct wl_resource *res = message->resource;
const char *signature = message->message->signature;
int i;
char type;
if (!weston_log_scope_is_enabled(protocol_scope))
return;
fp = open_memstream(&logstr, &logsize);
if (!fp)
return;
weston_log_scope_timestamp(protocol_scope,
timestr, sizeof timestr);
fprintf(fp, "%s ", timestr);
fprintf(fp, "client %p %s ", wl_resource_get_client(res),
direction == WL_PROTOCOL_LOGGER_REQUEST ? "rq" : "ev");
fprintf(fp, "%s@%u.%s(",
wl_resource_get_class(res),
wl_resource_get_id(res),
message->message->name);
for (i = 0; i < message->arguments_count; i++) {
signature = get_next_argument(signature, &type);
if (i > 0)
fprintf(fp, ", ");
switch (type) {
case 'u':
fprintf(fp, "%u", message->arguments[i].u);
break;
case 'i':
fprintf(fp, "%d", message->arguments[i].i);
break;
case 'f':
fprintf(fp, "%f",
wl_fixed_to_double(message->arguments[i].f));
break;
case 's':
fprintf(fp, "\"%s\"", message->arguments[i].s);
break;
case 'o':
if (message->arguments[i].o) {
struct wl_resource* resource;
resource = (struct wl_resource*) message->arguments[i].o;
fprintf(fp, "%s@%u",
wl_resource_get_class(resource),
wl_resource_get_id(resource));
}
else
fprintf(fp, "nil");
break;
case 'n':
fprintf(fp, "new id %s@",
(message->message->types[i]) ?
message->message->types[i]->name :
"[unknown]");
if (message->arguments[i].n != 0)
fprintf(fp, "%u", message->arguments[i].n);
else
fprintf(fp, "nil");
break;
case 'a':
fprintf(fp, "array");
break;
case 'h':
fprintf(fp, "fd %d", message->arguments[i].h);
break;
}
}
fprintf(fp, ")\n");
if (fclose(fp) == 0)
weston_log_scope_write(protocol_scope, logstr, logsize);
free(logstr);
}
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 %s\n", strerror(errno));
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 launch 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: %s\n", strerror(errno));
return;
}
snprintf(s, sizeof s, "%d", clientfd);
setenv("WAYLAND_SOCKET", s, 1);
if (execl(path, path, NULL) < 0)
weston_log("compositor: executing '%s' failed: %s\n",
path, strerror(errno));
}
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': %s\n",
path, strerror(errno));
return NULL;
}
pid = fork();
if (pid == -1) {
close(sv[0]);
close(sv[1]);
weston_log("weston_client_launch: "
"fork failed while launching '%s': %s\n", path,
strerror(errno));
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)
{
FILE *out = error_code == EXIT_SUCCESS ? stdout : stderr;
fprintf(out,
"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"
#if defined(BUILD_XWAYLAND)
" --xwayland\t\tLoad the xwayland module\n"
#endif
" --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"
" --debug\t\tEnable debug extension\n"
" -l, --logger-scopes=SCOPE\n\t\t\tSpecify log scopes to "
"subscribe to.\n\t\t\tCan specify multiple scopes, "
"each followed by comma\n"
" -f, --flight-rec-scopes=SCOPE\n\t\t\tSpecify log scopes to "
"subscribe to.\n\t\t\tCan specify multiple scopes, "
"each followed by comma\n"
" -h, --help\t\tThis help message\n\n");
#if defined(BUILD_DRM_COMPOSITOR)
fprintf(out,
"Options for drm-backend.so:\n\n"
" --seat=SEAT\t\tThe seat that weston should run on, instead of the seat defined in XDG_SEAT\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"
" --continue-without-input\tAllow the compositor to start without input devices\n\n");
#endif
#if defined(BUILD_FBDEV_COMPOSITOR)
fprintf(out,
"Options for fbdev-backend.so:\n\n"
" --tty=TTY\t\tThe tty to use\n"
" --device=DEVICE\tThe framebuffer device to use\n"
" --seat=SEAT\t\tThe seat that weston should run on, instead of the seat defined in XDG_SEAT\n"
"\n");
#endif
#if defined(BUILD_HEADLESS_COMPOSITOR)
fprintf(out,
"Options for headless-backend.so:\n\n"
" --width=WIDTH\t\tWidth of memory surface\n"
" --height=HEIGHT\tHeight of memory surface\n"
" --scale=SCALE\t\tScale factor of output\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"
" --use-gl\t\tUse the GL renderer (default: no rendering)\n"
" --no-outputs\t\tDo not create any virtual outputs\n"
"\n");
#endif
#if defined(BUILD_RDP_COMPOSITOR)
fprintf(out,
"Options for rdp-backend.so:\n\n"
" --width=WIDTH\t\tWidth of desktop\n"
" --height=HEIGHT\tHeight of desktop\n"
" --scale=SCALE\t\tScale factor 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(out,
"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(out,
"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: %s\n",
strerror(errno));
return -1;
}
} else {
socket_name = wl_display_add_socket_auto(display);
if (!socket_name) {
weston_log("fatal: failed to add socket: %s\n",
strerror(errno));
return -1;
}
}
setenv("WAYLAND_DISPLAY", socket_name, 1);
return 0;
}
WL_EXPORT void *
wet_load_module_entrypoint(const char *name, const char *entrypoint)
{
char path[PATH_MAX];
void *module, *init;
size_t len;
if (name == NULL)
return NULL;
if (name[0] != '/') {
len = weston_module_path_from_env(name, path, sizeof path);
if (len == 0)
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);
} else {
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 char *
wet_get_binary_path(const char *name, const char *dir)
{
char path[PATH_MAX];
size_t len;
len = weston_module_path_from_env(name, path, sizeof path);
if (len > 0)
return strdup(path);
len = snprintf(path, sizeof path, "%s/%s", dir, name);
if (len >= sizeof path)
return NULL;
return strdup(path);
}
WL_EXPORT char *
wet_get_libexec_path(const char *name)
{
return wet_get_binary_path(name, LIBEXECDIR);
}
WL_EXPORT char *
wet_get_bindir_path(const char *name)
{
return wet_get_binary_path(name, BINDIR);
}
static int
load_modules(struct weston_compositor *ec, const char *modules,
int *argc, char *argv[], bool *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 = true;
} 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;