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compositor: Added autolaunch support.

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The value of the `path` parameter is executed right before
wl_display_run.

The `watch` parameter is meant for things like tests using
the headless backend and the kiosk shell.

Fixes https://gitlab.freedesktop.org/wayland/weston/-/issues/171

Signed-off-by: Alvarito050506 <donfrutosgomez@gmail.com>
This commit is contained in:
Alvarito050506
2021-06-24 03:50:53 +00:00
committed by Álvaro Torralba
parent 1f57a1f998
commit 60855b1569
2 changed files with 64 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
compositor/main.c
+51
View File
@@ -123,6 +123,8 @@ struct wet_compositor {
bool init_failed;
struct wl_list layoutput_list; /**< wet_layoutput::compositor_link */
struct wl_list child_process_list;
pid_t autolaunch_pid;
bool autolaunch_watch;
};
static FILE *weston_logfile = NULL;
@@ -360,6 +362,13 @@ sigchld_handler(int signal_number, void *data)
pid_t pid;
while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
if (wet->autolaunch_pid != -1 && wet->autolaunch_pid == pid) {
if (wet->autolaunch_watch)
wl_display_terminate(wet->compositor->wl_display);
wet->autolaunch_pid = -1;
continue;
}
wl_list_for_each(p, &wet->child_process_list, link) {
if (p->pid == pid)
break;
@@ -3116,6 +3125,45 @@ wet_load_xwayland(struct weston_compositor *comp)
}
#endif
static int
execute_autolaunch(struct wet_compositor *wet, struct weston_config *config)
{
int ret = -1;
pid_t tmp_pid = -1;
char *autolaunch_path = NULL;
struct weston_config_section *section = NULL;
section = weston_config_get_section(config, "autolaunch", NULL, NULL);
weston_config_section_get_string(section, "path", &autolaunch_path, "");
weston_config_section_get_bool(section, "watch", &wet->autolaunch_watch, false);
if (!strlen(autolaunch_path))
goto out_ok;
if (access(autolaunch_path, X_OK) != 0) {
weston_log("Specified autolaunch path (%s) is not executable\n", autolaunch_path);
goto out;
}
tmp_pid = fork();
if (tmp_pid == -1) {
weston_log("Failed to fork autolaunch process: %s\n", strerror(errno));
goto out;
} else if (tmp_pid == 0) {
execl(autolaunch_path, autolaunch_path, NULL);
/* execl shouldn't return */
fprintf(stderr, "Failed to execute autolaunch: %s\n", strerror(errno));
_exit(1);
}
out_ok:
ret = 0;
out:
wet->autolaunch_pid = tmp_pid;
free(autolaunch_path);
return ret;
}
static void
weston_log_setup_scopes(struct weston_log_context *log_ctx,
struct weston_log_subscriber *subscriber,
@@ -3449,6 +3497,9 @@ wet_main(int argc, char *argv[], const struct weston_testsuite_data *test_data)
weston_compositor_wake(wet.compositor);
if (execute_autolaunch(&wet, config) < 0)
goto out;
wl_display_run(display);
/* Allow for setting return exit code after
man/weston.ini.man
+13
View File
@@ -78,6 +78,7 @@ The section headers are:
.BR "terminal " "Terminal application options"
.BR "xwayland " "XWayland options"
.BR "screen-share " "Screen sharing options"
.BR "autolaunch " "Autolaunch options"
.fi
.RE
.PP
@@ -661,6 +662,18 @@ sets the path to the xserver to run (string).
sets the command to start a fullscreen-shell server for screen sharing (string).
.RE
.RE
.SH "AUTOLAUNCH SECTION"
.TP 7
.BI "path=" "/usr/bin/echo"
Path to an executable file to run after startup. This file is executed in
parallel to Weston, so it does not have to immediately exit. Defaults to empty.
.RE
.TP 7
.BI "watch=" "false"
If set to true, quit Weston after the auto-launched executable exits. Set to false
by default.
.RE
.RE
.SH "SEE ALSO"
.BR weston (1),
.BR weston-bindings (7),