Correctly exit sway on errors.

Calling `exit` in sway_terminate prevents sway from correctly shutting
down (freeing data, cleanly terminating the ipc server, etc.).

A better way is to exit straight away if the failure occurs before
`wlc_run` and use sway_abort as usual if it occur when wlc is running.

common/log.c

@@ -58,7 +58,7 @@ void sway_abort(const char *format, ...) {
 	vfprintf(stderr, format, args);
 	va_end(args);
 	fprintf(stderr, "\n");
-	sway_terminate();
+	sway_terminate(EXIT_FAILURE);
 }
 
 #ifndef NDEBUG

include/sway.h

@@ -1,6 +1,6 @@
 #ifndef _SWAY_SWAY_H
 #define _SWAY_SWAY_H
 
-void sway_terminate(void);
+void sway_terminate(int exit_code);
 
 #endif

sway/commands.c

@@ -450,7 +450,7 @@ static struct cmd_results *cmd_exit(int argc, char **argv) {
 	}
 	// Close all views
 	close_views(&root_container);
-	sway_terminate();
+	sway_terminate(EXIT_SUCCESS);
 	return cmd_results_new(CMD_SUCCESS, NULL, NULL);
 }
 

sway/main.c

@@ -21,16 +21,17 @@
 #include "sway.h"
 
 static bool terminate_request = false;
+static int exit_value = 0;
 
-void sway_terminate(void) {
+void sway_terminate(int exit_code) {
 	terminate_request = true;
+	exit_value = exit_code;
 	wlc_terminate();
-	exit(EXIT_FAILURE);
 }
 
 void sig_handler(int signal) {
 	close_views(&root_container);
-	sway_terminate();
+	sway_terminate(EXIT_SUCCESS);
 }
 
 static void wlc_log_handler(enum wlc_log_type type, const char *str) {
@@ -150,16 +151,19 @@ int main(int argc, char **argv) {
 
 	if (optind < argc) { // Behave as IPC client
 		if(optind != 1) {
-			sway_abort("Don't use options with the IPC client");
+			sway_log(L_ERROR, "Don't use options with the IPC client");
+			exit(EXIT_FAILURE);
 		}
 		if (getuid() != geteuid() || getgid() != getegid()) {
 			if (setgid(getgid()) != 0 || setuid(getuid()) != 0) {
-				sway_abort("Unable to drop root");
+				sway_log(L_ERROR, "Unable to drop root");
+				exit(EXIT_FAILURE);
 			}
 		}
 		char *socket_path = getenv("SWAYSOCK");
 		if (!socket_path) {
-			sway_abort("Unable to retrieve socket path");
+			sway_log(L_ERROR, "Unable to retrieve socket path");
+			exit(EXIT_FAILURE);
 		}
 		char *command = join_args(argv + optind, argc - optind);
 		run_as_ipc_client(command, socket_path);
@@ -224,6 +228,6 @@ int main(int argc, char **argv) {
 
 	ipc_terminate();
 
-	return 0;
+	return exit_value;
 }
 

swaybar/main.c

@@ -10,9 +10,9 @@
 /* global bar state */
 struct bar swaybar;
 
-void sway_terminate(void) {
+void sway_terminate(int exit_code) {
 	bar_teardown(&swaybar);
-	exit(EXIT_FAILURE);
+	exit(exit_code);
 }
 
 void sig_handler(int signal) {

swaybg/main.c

@@ -21,7 +21,7 @@ enum scaling_mode {
 	SCALING_MODE_TILE,
 };
 
-void sway_terminate(void) {
+void sway_terminate(int exit_code) {
 	int i;
 	for (i = 0; i < surfaces->length; ++i) {
 		struct window *window = surfaces->items[i];
@@ -29,7 +29,7 @@ void sway_terminate(void) {
 	}
 	list_free(surfaces);
 	registry_teardown(registry);
-	exit(EXIT_FAILURE);
+	exit(exit_code);
 }
 
 int main(int argc, const char **argv) {

swaygrab/main.c

@@ -11,8 +11,8 @@
 #include "ipc-client.h"
 #include "util.h"
 
-void sway_terminate(void) {
-	exit(EXIT_FAILURE);
+void sway_terminate(int exit_code) {
+	exit(exit_code);
 }
 
 void grab_and_apply_magick(const char *file, const char *output,

swaylock/main.c

@@ -24,7 +24,7 @@ enum scaling_mode {
 	SCALING_MODE_TILE,
 };
 
-void sway_terminate(void) {
+void sway_terminate(int exit_code) {
 	int i;
 	for (i = 0; i < surfaces->length; ++i) {
 		struct window *window = surfaces->items[i];
@@ -32,7 +32,7 @@ void sway_terminate(void) {
 	}
 	list_free(surfaces);
 	registry_teardown(registry);
-	exit(EXIT_FAILURE);
+	exit(exit_code);
 }
 
 char *password;

swaymsg/main.c

@@ -11,8 +11,8 @@
 #include "readline.h"
 #include "log.h"
 
-void sway_terminate(void) {
-	exit(EXIT_FAILURE);
+void sway_terminate(int exit_code) {
+	exit(exit_code);
 }
 
 int main(int argc, char **argv) {