X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ffilesys%2Ffile.h;h=dc05332f8b3b007d49b99214f20cfa819c3a0d20;hb=400c8c5ba0d309716ad7d347dff067ddb2f99a74;hp=8f2fbc9fb85254e8ccbbd7eb3e07507a0baa5b4a;hpb=3fc16f6e9abc98a3bd5427eb210669860609a224;p=pintos-anon

diff --git a/src/filesys/file.h b/src/filesys/file.h
index 8f2fbc9..dc05332 100644
--- a/src/filesys/file.h
+++ b/src/filesys/file.h
@@ -1,17 +1,28 @@
-#ifndef HEADER_FILE_H
-#define HEADER_FILE_H 1
+#ifndef FILESYS_FILE_H
+#define FILESYS_FILE_H
 
-#include <stdint.h>
-#include <stddef.h>
+#include "filesys/off_t.h"
 
-typedef int32_t off_t;
+struct inode;
 
-struct file;
+/* Opening and closing files. */
+struct file *file_open (struct inode *);
+struct file *file_reopen (struct file *);
 void file_close (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_length (struct file *);
+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 /* file.h */
+#endif /* filesys/file.h */