wip vfs stubs

src/kernel/svc.c

@@ -66,6 +66,18 @@ void SVC_Handler(void) {
 		 */
 		clock_svc(args);
 		break;
+
+	case 3: /* FS-related calls
+		 * 0 - open
+		 * 1 - read
+		 * 2 - write
+		 * 3 - close
+		 * 4 - stat
+		 * 5 - seek
+		 * link/unlink?
+		 */
+		break;
+
 	default:
 		break;
 	}

src/kernel/vfs.c

@@ -1,15 +1,30 @@
 #include "vfs.h"
 #include "task.h"
 
+typedef unsigned int size_t;
+
 //static vfs_node vfs_root;
 
-int vfs_open(const char *path, int mode)
-{
-	(void)path;
-	(void)mode;
-//	vfs_node *cd = task_getcwd();
-//	if (cd == 0)
-//		cd = &vfs_root;
+int vfs_open(const char *path, int flags, int mode);
+size_t vfs_read(int fd, void *buf, size_t count);
+size_t vfs_write(int fd, const void *buf, size_t count);
+int vfs_close(int fd);
 
-	return 0;
+void vfs_svc(uint32_t *args)
+{
+	switch (args[0]) {
+	case 0:
+		*((int *)args[4]) = vfs_open(args[1], args[2], args[3]);
+		break;
+	case 1:
+		*((int *)args[4]) = vfs_read(args[1], args[2], args[3]);
+		break;
+	case 2:
+		*((int *)args[4]) = vfs_write(args[1], args[2], args[3]);
+		break;
+	case 3:
+		*((int *)args[2]) = vfs_close(args[1]);
+		break;
+	}
 }
+