@@ -169,10 +169,10 @@ return 0;
 }
 
 void GBAMapOptionsToContext(struct StartupOptions* opts, struct GBAThread* threadContext) {
-	threadContext->fd = VFileFromFD(opts->fd);
+	threadContext->fd = VFileOpen(opts->fname, O_RDONLY);
 	threadContext->fname = opts->fname;
-	threadContext->biosFd = VFileFromFD(opts->biosFd);
-	threadContext->patchFd = VFileFromFD(opts->patchFd);
+	threadContext->biosFd = VFileOpen(opts->bios, O_RDONLY);
+	threadContext->patchFd = VFileOpen(opts->patch, O_RDONLY);
 	threadContext->frameskip = opts->frameskip;
 	threadContext->logLevel = opts->logLevel;
 	threadContext->rewindBufferCapacity = opts->rewindBufferCapacity;

@@ -21,18 +21,16 @@ "  -3               3x viewport\n" \
 	"  -4               4x viewport\n" \
 	"  -f               Start full-screen"
 
-static const char* _defaultFilename = "test.rom";
-
 static const struct option _options[] = {
-	{ "bios", 1, 0, 'b' },
-	{ "patch", 1, 0, 'p' },
-	{ "frameskip", 1, 0, 's' },
+	{ "bios",      required_argument, 0, 'b' },
+	{ "frameskip", required_argument, 0, 's' },
 #ifdef USE_CLI_DEBUGGER
-	{ "debug", 1, 0, 'd' },
+	{ "debug",     no_argument, 0, 'd' },
 #endif
 #ifdef USE_GDB_STUB
-	{ "gdb", 1, 0, 'g' },
+	{ "gdb",       no_argument, 0, 'g' },
 #endif
+	{ "patch",     required_argument, 0, 'p' },
 	{ 0, 0, 0, 0 }
 };
 
@@ -40,9 +38,6 @@ bool _parseGraphicsArg(struct SubParser* parser, int option, const char* arg);
 
 bool parseCommandArgs(struct StartupOptions* opts, int argc, char* const* argv, struct SubParser* subparser) {
 	memset(opts, 0, sizeof(*opts));
-	opts->fd = -1;
-	opts->biosFd = -1;
-	opts->patchFd = -1;
 
 	int ch;
 	char options[64] =
@@ -61,7 +56,7 @@ }
 	while ((ch = getopt_long(argc, argv, options, _options, 0)) != -1) {
 		switch (ch) {
 		case 'b':
-			opts->biosFd = open(optarg, O_RDONLY);
+			opts->bios = strdup(optarg);
 			break;
 #ifdef USE_CLI_DEBUGGER
 		case 'd':
@@ -83,7 +78,7 @@ case 'l':
 			opts->logLevel = atoi(optarg);
 			break;
 		case 'p':
-			opts->patchFd = open(optarg, O_RDONLY);
+			opts->patch = strdup(optarg);
 			break;
 		case 's':
 			opts->frameskip = atoi(optarg);
@@ -99,15 +94,22 @@ }
 	}
 	argc -= optind;
 	argv += optind;
-	if (argc == 1) {
-		opts->fname = argv[0];
-	} else if (argc == 0) {
-		opts->fname = _defaultFilename;
-	} else {
+	if (argc != 1) {
 		return false;
 	}
-	opts->fd = open(opts->fname, O_RDONLY);
+	opts->fname = strdup(argv[0]);
 	return true;
+}
+
+void freeOptions(struct StartupOptions* opts) {
+	free(opts->fname);
+	opts->fname = 0;
+
+	free(opts->bios);
+	opts->bios = 0;
+
+	free(opts->patch);
+	opts->patch = 0;
 }
 
 void initParserForGraphics(struct SubParser* parser, struct GraphicsOpts* opts) {

@@ -15,10 +15,9 @@ DEBUGGER_MAX
 };
 
 struct StartupOptions {
-	int fd;
-	const char* fname;
-	int biosFd;
-	int patchFd;
+	char* fname;
+	char* bios;
+	char* patch;
 	int logLevel;
 	int frameskip;
 	int rewindBufferCapacity;
@@ -43,6 +42,8 @@ int height;
 };
 
 bool parseCommandArgs(struct StartupOptions* opts, int argc, char* const* argv, struct SubParser* subparser);
+void freeOptions(struct StartupOptions* opts);
+
 void usage(const char* arg0, const char* extraOptions);
 
 void initParserForGraphics(struct SubParser* parser, struct GraphicsOpts* opts);

@@ -67,6 +67,7 @@ struct GraphicsOpts graphicsOpts;
 	initParserForGraphics(&subparser, &graphicsOpts);
 	if (!parseCommandArgs(&opts, argc, argv, &subparser)) {
 		usage(argv[0], subparser.usage);
+		freeOptions(&opts);
 		return 1;
 	}
 
@@ -78,6 +79,7 @@ renderer.events.windowUpdated = 0;
 #endif
 
 	if (!_GBASDLInit(&renderer)) {
+		freeOptions(&opts);
 		return 1;
 	}
 
@@ -99,10 +101,7 @@
 	_GBASDLRunloop(&context, &renderer);
 
 	GBAThreadJoin(&context);
-	close(opts.fd);
-	if (opts.biosFd >= 0) {
-		close(opts.biosFd);
-	}
+	freeOptions(&opts);
 	free(context.debugger);
 
 	_GBASDLDeinit(&renderer);

@@ -54,6 +54,7 @@ struct GraphicsOpts graphicsOpts;
 	initParserForGraphics(&subparser, &graphicsOpts);
 	if (!parseCommandArgs(&opts, argc, argv, &subparser)) {
 		usage(argv[0], subparser.usage);
+		freeOptions(&opts);
 		return 1;
 	}
 
@@ -61,6 +62,7 @@ renderer.viewportWidth = graphicsOpts.width;
 	renderer.viewportHeight = graphicsOpts.height;
 
 	if (!_GBASDLInit(&renderer)) {
+		freeOptions(&opts);
 		return 1;
 	}
 
@@ -129,11 +131,8 @@ #if !SDL_VERSION_ATLEAST(2, 0, 0)
 	SDL_UnlockSurface(surface);
 #endif
 	GBAThreadJoin(&context);
-	close(opts.fd);
-	if (opts.biosFd >= 0) {
-		close(opts.biosFd);
-	}
 	free(context.debugger);
+	freeOptions(&opts);
 
 	_GBASDLDeinit(&renderer);