reorganize file structure to match the upstream requirements

1 files changed, 29 insertions, 0 deletions

diff --git a/filesys/file.h b/filesys/file.h
new file mode 100644
index 0000000..a33c5af
--- /dev/null
+++ b/filesys/file.h
@@ -0,0 +1,29 @@
+#ifndef FILESYS_FILE_H
+#define FILESYS_FILE_H
+
+#include "filesys/off_t.h"
+
+struct inode;
+
+/* Opening and closing files. */
+struct file *file_open (struct inode *);
+struct file *file_reopen (struct file *);
+void file_close (struct file *);
+struct inode *file_get_inode (struct file *);
+
+/* Reading and writing. */
+off_t file_read (struct file *, void *, off_t);
+off_t file_read_at (struct file *, void *, off_t size, off_t start);
+off_t file_write (struct file *, const void *, off_t);
+off_t file_write_at (struct file *, const void *, off_t size, off_t start);
+
+/* Preventing writes. */
+void file_deny_write (struct file *);
+void file_allow_write (struct file *);
+
+/* File position. */
+void file_seek (struct file *, off_t);
+off_t file_tell (struct file *);
+off_t file_length (struct file *);
+
+#endif /* filesys/file.h */