360: Try to fix crash from I/O

misc/xbox360/Makefile

@@ -43,7 +43,7 @@ LDFLAGS	=	-g $(MACHDEP) -Wl,--gc-sections -Wl,-Map,$(notdir $@).map
 #---------------------------------------------------------------------------------
 # any extra libraries we wish to link with the project
 #---------------------------------------------------------------------------------
-LIBS	:=	-lxenon -lm
+LIBS	:=	-lxenon -lm -lfat
 
 #---------------------------------------------------------------------------------
 # list of directories containing libraries, this must be the top level containing

src/Platform_Xbox360.c

@@ -21,6 +21,7 @@
 #include <unistd.h>
 #include <dirent.h>
 #include <fcntl.h>
+#include <libfat/fat.h>
 #include "_PlatformConsole.h"
 
 const cc_result ReturnCode_FileShareViolation = 1000000000; /* TODO: not used apparently */
@@ -80,6 +81,7 @@ cc_uint64 Stopwatch_Measure(void) {
 *#########################################################################################################################*/
 static char root_buffer[NATIVE_STR_LEN];
 static cc_string root_path = String_FromArray(root_buffer);
+static bool fat_available;
 
 void Platform_EncodePath(cc_filepath* dst, const cc_string* path) {
 	char* str = dst->buffer;
@@ -89,15 +91,21 @@ void Platform_EncodePath(cc_filepath* dst, const cc_string* path) {
 }
 
 cc_result Directory_Create(const cc_filepath* path) {
+	if (!fat_available) return ENOSYS;
+
 	return mkdir(path->buffer, 0) == -1 ? errno : 0;
 }
 
 int File_Exists(const cc_filepath* path) {
+	if (!fat_available) return 0;
+
 	struct stat sb;
 	return stat(path->buffer, &sb) == 0 && S_ISREG(sb.st_mode);
 }
 
 cc_result Directory_Enum(const cc_string* dirPath, void* obj, Directory_EnumCallback callback) {
+	if (!fat_available) return ENOSYS;
+
 	cc_string path; char pathBuffer[FILENAME_SIZE];
 	cc_filepath str;
 	struct dirent* entry;
@@ -141,12 +149,17 @@ static cc_result File_Do(cc_file* file, const char* path, int mode) {
 }
 
 cc_result File_Open(cc_file* file, const cc_filepath* path) {
+	if (!fat_available) return ReturnCode_FileNotFound;
 	return File_Do(file, path->buffer, O_RDONLY);
 }
+
 cc_result File_Create(cc_file* file, const cc_filepath* path) {
+	if (!fat_available) return ENOTSUP;
 	return File_Do(file, path->buffer, O_RDWR | O_CREAT | O_TRUNC);
 }
+
 cc_result File_OpenOrCreate(cc_file* file, const cc_filepath* path) {
+	if (!fat_available) return ENOTSUP;
 	return File_Do(file, path->buffer, O_RDWR | O_CREAT);
 }
 
@@ -264,10 +277,39 @@ cc_result Socket_CheckWritable(cc_socket s, cc_bool* writable) {
 /*########################################################################################################################*
 *--------------------------------------------------------Platform---------------------------------------------------------*
 *#########################################################################################################################*/
+extern int bdev_enum(int handle, const char** name);
+
+static void FindRootDirectory(void) {
+	const char* dev = NULL;
+    int handle = bdev_enum(-1, &dev);
+    if (handle < 0) { fat_available = false; return; }
+	
+	root_path.length = 0;
+	String_Format1(&root_path, "%c:/ClassiCube", dev);
+}
+
+static void CreateRootDirectory(void) {
+	if (!fat_available) return;
+	root_buffer[root_path.length] = '\0';
+	
+	int res = mkdir(root_buffer, 0);
+	int err = res == -1 ? errno : 0;
+	Platform_Log1("Created root directory: %i", &err);
+}
+
 void Platform_Init(void) {
 	xenos_init(VIDEO_MODE_AUTO);
 	console_init();
 	//network_init();
+	
+	xenon_ata_init();
+	xenon_atapi_init();
+
+	fat_available = fatInitDefault();
+	Platform_ReadonlyFilesystem = !fat_available;
+
+	FindRootDirectory();
+	CreateRootDirectory();
 }
 
 void Platform_Free(void) {