xwayland: check executable exists on init
Instead of walking PATH like a previous proposal [1], this one checks that the Xwayland path specified in the pkg-config file exists. I think this is a reasonable compromise: - Users that don't have Xwayland installed system-wide won't get a bogus DISPLAY env variable set up. - Users that have WLR_XWAYLAND set won't be affected by this check. - Users that have Xwayland installed system-wide and a different Xwayland in their PATH still get their custom Xwayland. - Users that don't have Xwayland installed system-wide but have it somewhere else in PATH are left out. But this is pretty niche, and they can just set WLR_XWAYLAND. [1]: https://github.com/swaywm/wlroots/pull/2314
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@ -6,6 +6,8 @@ if not features.get('x11-backend')
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endif
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if not features.get('xwayland')
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exclude_files += 'xwayland.h'
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else
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subdir('xwayland')
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endif
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if not features.get('xdg-foreign')
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exclude_files += [
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@ -0,0 +1,12 @@
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if xwayland.found()
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xwayland_path = xwayland.get_pkgconfig_variable('xwayland')
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else
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xwayland_path = xwayland_prog.full_path()
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endif
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xwayland_config_data = configuration_data()
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xwayland_config_data.set_quoted('XWAYLAND_PATH', xwayland_path)
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configure_file(
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output: 'config.h',
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configuration: xwayland_config_data,
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)
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@ -16,6 +16,7 @@
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#include <wlr/xwayland.h>
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#include "sockets.h"
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#include "util/signal.h"
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#include "xwayland/config.h"
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static void safe_close(int fd) {
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if (fd >= 0) {
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@ -442,6 +443,11 @@ void wlr_xwayland_server_destroy(struct wlr_xwayland_server *server) {
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struct wlr_xwayland_server *wlr_xwayland_server_create(
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struct wl_display *wl_display,
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struct wlr_xwayland_server_options *options) {
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if (!getenv("WLR_XWAYLAND") && access(XWAYLAND_PATH, X_OK) != 0) {
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wlr_log(WLR_ERROR, "Cannot find Xwayland binary \"%s\"", XWAYLAND_PATH);
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return NULL;
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}
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struct wlr_xwayland_server *server =
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calloc(1, sizeof(struct wlr_xwayland_server));
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if (!server) {
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