fix(iso): wrong register of non-directories

k/fd.c

@@ -19,7 +19,7 @@ int register_fd(u32 lba, u32 file_size, u8 is_dir)
     if (free_fd < 0)
         return -1;
 
-    struct file_entry f = { 0, lba, 0, file_size, is_dir };
+    struct file_entry f = { 1, lba, 0, file_size, is_dir };
     fd_table[free_fd] = f;
     return free_fd;
 }

k/iso.c

@@ -49,10 +49,7 @@ int open(const char *pathname, int flags)
 
         // we found the file
         if (!length)
-        {
-            return register_fd(curr->data_blk.le, curr->file_size.le,
-                    (curr->type == ISO_FILE_ISDIR));
-        }
+            return register_fd(curr->data_blk.le, curr->file_size.le, 1);
 
         // iteration for one directory
         while (curr->dir_size != 0)
@@ -60,6 +57,8 @@ int open(const char *pathname, int flags)
             if (length == curr->idf_len &&
                     !strncmp(pathname + start, curr->idf, length))
             {
+                if (!(curr->type & ISO_FILE_ISDIR))
+                    return register_fd(curr->data_blk.le, curr->file_size.le, 0);
                 curr = read_block(curr->data_blk.le);
                 found = 1;
                 break;