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Diffstat (limited to 'compositor/main.c')
| -rw-r--r-- | compositor/main.c | 2620 |
1 files changed, 2620 insertions, 0 deletions
diff --git a/compositor/main.c b/compositor/main.c new file mode 100644 index 00000000..b5b4fc59 --- /dev/null +++ b/compositor/main.c @@ -0,0 +1,2620 @@ +/* + * 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_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 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) +{ + 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" + " --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(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\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" + " --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(out, + "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(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: %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) +{ + 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); + 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; +} + +WL_EXPORT char * +wet_get_binary_path(const char *name) +{ + 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", LIBEXECDIR, name); + if (len >= sizeof path) + return NULL; + + return strdup(path); +} + +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; + + 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; + } + + 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_section *section) +{ + struct wet_compositor *wet = to_wet_compositor(output->compositor); + const struct weston_drm_output_api *api; + enum weston_drm_backend_output_mode mode = + WESTON_DRM_BACKEND_OUTPUT_PREFERRED; + char *s; + char *modeline = NULL; + char *gbm_format = NULL; + char *seat = NULL; + + api = weston_drm_output_get_api(output->compositor); + if (!api) { + weston_log("Cannot use weston_drm_output_api.\n"); + return -1; + } + + weston_config_section_get_string(section, "mode", &s, "preferred"); + + if (strcmp(s, "off") == 0) { + assert(0 && "off was supposed to be pruned"); + 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; +} + +/* Find the output section to use for configuring the output with the + * named head. If an output section with the given name contains + * a "same-as" key, ignore all other settings in the output section and + * instead find an output section named by the "same-as". Do this + * recursively. + */ +static struct weston_config_section * +drm_config_find_controlling_output_section(struct weston_config *config, + const char *head_name) +{ + struct weston_config_section *section; + char *same_as; + int depth = 0; + + same_as = strdup(head_name); + do { + section = weston_config_get_section(config, "output", + "name", same_as); + if (!section && depth > 0) + weston_log("Configuration error: " + "output section referred to with " + "'same-as=%s' not found.\n", same_as); + + free(same_as); + + if (!section) + return NULL; + + if (++depth > 10) { + weston_log("Configuration error: " + "'same-as' nested too deep for output '%s'.\n", + head_name); + return NULL; + } + + weston_config_section_get_string(section, "same-as", + &same_as, NULL); + } while (same_as); + + return section; +} + +static struct wet_layoutput * +wet_compositor_create_layoutput(struct wet_compositor *compositor, + const char *name, + struct weston_config_section *section) +{ + struct wet_layoutput *lo; + + lo = zalloc(sizeof *lo); + if (!lo) + return NULL; + + lo->compositor = compositor; + wl_list_insert(compositor->layoutput_list.prev, &lo->compositor_link); + wl_list_init(&lo->output_list); + lo->name = strdup(name); + lo->section = section; + + return lo; +} + +static void +wet_layoutput_destroy(struct wet_layoutput *lo) +{ + wl_list_remove(&lo->compositor_link); + assert(wl_list_empty(&lo->output_list)); + free(lo->name); + free(lo); +} + +static void +wet_output_handle_destroy(struct wl_listener *listener, void *data) +{ + struct wet_output *output; + + output = wl_container_of(listener, output, output_destroy_listener); + assert(output->output == data); + + output->output = NULL; + wl_list_remove(&output->output_destroy_listener.link); +} + +static struct wet_output * +wet_layoutput_create_output(struct wet_layoutput *lo, const char *name) +{ + struct wet_output *output; + + output = zalloc(sizeof *output); + if (!output) + return NULL; + + output->output = + weston_compositor_create_output(lo->compositor->compositor, + name); + if (!output) { + free(output); + return NULL; + } + + output->layoutput = lo; + wl_list_insert(lo->output_list.prev, &output->link); + output->output_destroy_listener.notify = wet_output_handle_destroy; + weston_output_add_destroy_listener(output->output, + &output->output_destroy_listener); + + return output; +} + +static struct wet_output * +wet_output_from_weston_output(struct weston_output *base) +{ + struct wl_listener *lis; + + lis = weston_output_get_destroy_listener(base, + wet_output_handle_destroy); + if (!lis) + return NULL; + + return container_of(lis, struct wet_output, output_destroy_listener); +} + +static void +wet_output_destroy(struct wet_output *output) +{ + if (output->output) + weston_output_destroy(output->output); + + wl_list_remove(&output->link); + free(output); +} + +static struct wet_layoutput * +wet_compositor_find_layoutput(struct wet_compositor *wet, const char *name) +{ + struct wet_layoutput *lo; + + wl_list_for_each(lo, &wet->layoutput_list, compositor_link) + if (strcmp(lo->name, name) == 0) + return lo; + + return NULL; +} + +static void +wet_compositor_layoutput_add_head(struct wet_compositor *wet, + const char *output_name, + struct weston_config_section *section, + struct weston_head *head) +{ + struct wet_layoutput *lo; + + lo = wet_compositor_find_layoutput(wet, output_name); + if (!lo) { + lo = wet_compositor_create_layoutput(wet, output_name, section); + if (!lo) + return; + } + + if (lo->add.n + 1 >= ARRAY_LENGTH(lo->add.heads)) + return; + + lo->add.heads[lo->add.n++] = head; +} + +static void +wet_compositor_destroy_layout(struct wet_compositor *wet) +{ + struct wet_layoutput *lo, *lo_tmp; + struct wet_output *output, *output_tmp; + + wl_list_for_each_safe(lo, lo_tmp, + &wet->layoutput_list, compositor_link) { + wl_list_for_each_safe(output, output_tmp, + &lo->output_list, link) { + wet_output_destroy(output); + } + wet_layoutput_destroy(lo); + } +} + +static void +drm_head_prepare_enable(struct wet_compositor *wet, + struct weston_head *head) +{ + const char *name = weston_head_get_name(head); + struct weston_config_section *section; + char *output_name = NULL; + char *mode = NULL; + + section = drm_config_find_controlling_output_section(wet->config, name); + if (section) { + /* skip outputs that are explicitly off, the backend turns + * them off automatically. + */ + weston_config_section_get_string(section, "mode", &mode, NULL); + if (mode && strcmp(mode, "off") == 0) { + free(mode); + return; + } + free(mode); + + weston_config_section_get_string(section, "name", + &output_name, NULL); + assert(output_name); + + wet_compositor_layoutput_add_head(wet, output_name, + section, head); + free(output_name); + } else { + wet_compositor_layoutput_add_head(wet, name, NULL, head); + } +} + +static bool +drm_head_should_force_enable(struct wet_compositor *wet, + struct weston_head *head) +{ + const char *name = weston_head_get_name(head); + struct weston_config_section *section; + int force = 0; + + section = drm_config_find_controlling_output_section(wet->config, name); + if (!section) + return false; + + weston_config_section_get_bool(section, "force-on", &force, 0); + return !!force; +} + +static void +drm_try_attach(struct weston_output *output, + struct wet_head_array *add, + struct wet_head_array *failed) +{ + unsigned i; + + /* try to attach all heads, this probably succeeds */ + for (i = 0; i < add->n; i++) { + if (!add->heads[i]) + continue; + + if (weston_output_attach_head(output, add->heads[i]) < 0) { + assert(failed->n < ARRAY_LENGTH(failed->heads)); + + failed->heads[failed->n++] = add->heads[i]; + add->heads[i] = NULL; + } + } +} + +static int +drm_try_enable(struct weston_output *output, + struct wet_head_array *undo, + struct wet_head_array *failed) +{ + /* Try to enable, and detach heads one by one until it succeeds. */ + while (!output->enabled) { + if (weston_output_enable(output) == 0) + return 0; + + /* the next head to drop */ + while (undo->n > 0 && undo->heads[--undo->n] == NULL) + ; + + /* No heads left to undo and failed to enable. */ + if (undo->heads[undo->n] == NULL) + return -1; + + assert(failed->n < ARRAY_LENGTH(failed->heads)); + + /* undo one head */ + weston_head_detach(undo->heads[undo->n]); + failed->heads[failed->n++] = undo->heads[undo->n]; + undo->heads[undo->n] = NULL; + } + + return 0; +} + +static int +drm_try_attach_enable(struct weston_output *output, struct wet_layoutput *lo) +{ + struct wet_head_array failed = {}; + unsigned i; + + assert(!output->enabled); + + drm_try_attach(output, &lo->add, &failed); + if (drm_backend_output_configure(output, lo->section) < 0) + return -1; + + if (drm_try_enable(output, &lo->add, &failed) < 0) + return -1; + + /* For all successfully attached/enabled heads */ + for (i = 0; i < lo->add.n; i++) + if (lo->add.heads[i]) + wet_head_tracker_create(lo->compositor, + lo->add.heads[i]); + + /* Push failed heads to the next round. */ + lo->add = failed; + + return 0; +} + +static int +drm_process_layoutput(struct wet_compositor *wet, struct wet_layoutput *lo) +{ + struct wet_output *output, *tmp; + char *name = NULL; + int ret; + + /* + * For each existing wet_output: + * try attach + * While heads left to enable: + * Create output + * try attach, try enable + */ + + wl_list_for_each_safe(output, tmp, &lo->output_list, link) { + struct wet_head_array failed = {}; + + if (!output->output) { + /* Clean up left-overs from destroyed heads. */ + wet_output_destroy(output); + continue; + } + + assert(output->output->enabled); + + drm_try_attach(output->output, &lo->add, &failed); + lo->add = failed; + if (lo->add.n == 0) + return 0; + } + + if (!weston_compositor_find_output_by_name(wet->compositor, lo->name)) + name = strdup(lo->name); + + while (lo->add.n > 0) { + if (!wl_list_empty(&lo->output_list)) { + weston_log("Error: independent-CRTC clone mode is not implemented.\n"); + return -1; + } + + if (!name) { + ret = asprintf(&name, "%s:%s", lo->name, + weston_head_get_name(lo->add.heads[0])); + if (ret < 0) + return -1; + } + output = wet_layoutput_create_output(lo, name); + free(name); + name = NULL; + + if (!output) + return -1; + + if (drm_try_attach_enable(output->output, lo) < 0) { + wet_output_destroy(output); + return -1; + } + } + + return 0; +} + +static int +drm_process_layoutputs(struct wet_compositor *wet) +{ + struct wet_layoutput *lo; + int ret = 0; + + wl_list_for_each(lo, &wet->layoutput_list, compositor_link) { + if (lo->add.n == 0) + continue; + + if (drm_process_layoutput(wet, lo) < 0) { + lo->add = (struct wet_head_array){}; + ret = -1; + } + } + + return ret; +} + +static void +drm_head_disable(struct weston_head *head) +{ + struct weston_output *output_base; + struct wet_output *output; + struct wet_head_tracker *track; + + track = wet_head_tracker_from_head(head); + if (track) + wet_head_tracker_destroy(track); + + output_base = weston_head_get_output(head); + assert(output_base); + output = wet_output_from_weston_output(output_base); + assert(output && output->output == output_base); + + weston_head_detach(head); + if (count_remaining_heads(output->output, NULL) == 0) + wet_output_destroy(output); +} + +static void +drm_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; + bool forced; + + /* We need to collect all cloned heads into outputs before enabling the + * output. + */ + while ((head = weston_compositor_iterate_heads(compositor, head))) { + connected = weston_head_is_connected(head); + enabled = weston_head_is_enabled(head); + changed = weston_head_is_device_changed(head); + forced = drm_head_should_force_enable(wet, head); + + if ((connected || forced) && !enabled) { + drm_head_prepare_enable(wet, head); + } else if (!(connected || forced) && enabled) { + drm_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); + } + + if (drm_process_layoutputs(wet) < 0) + wet->init_failed = true; +} + +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->heads_changed_listener.notify = drm_heads_changed; + weston_compositor_add_heads_changed_listener(c, + &wet->heads_changed_listener); + + 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 }, + { WESTON_OPTION_STRING, "seat", 0, &config.seat_id }, + }; + + parse_options(fbdev_options, ARRAY_LENGTH(fbdev_options), argc, argv); + + 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, §ion, §ion_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, §ion, §ion_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 }, + }; + + wl_list_init(&wet.layoutput_list); + + 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: + wet_compositor_destroy_layout(&wet); + + /* 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; +} |