X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ffilesys%2Ffile.h;h=c3cde121ad0b55ef6189272382019602b55ac0e8;hb=41cc2728b06b5e1eeb4cf5a4979692640049e047;hp=8f2fbc9fb85254e8ccbbd7eb3e07507a0baa5b4a;hpb=3fc16f6e9abc98a3bd5427eb210669860609a224;p=pintos-anon

diff --git a/src/filesys/file.h b/src/filesys/file.h
index 8f2fbc9..c3cde12 100644
--- a/src/filesys/file.h
+++ b/src/filesys/file.h
@@ -1,15 +1,25 @@
 #ifndef HEADER_FILE_H
 #define HEADER_FILE_H 1
 
+#include <stdbool.h>
 #include <stdint.h>
 #include <stddef.h>
+#include "disk.h"
+#include "off_t.h"
 
-typedef int32_t off_t;
+struct file 
+  {
+    struct filehdr *hdr;
+    void *bounce;
+    off_t pos;
+  };
 
-struct file;
+bool file_open (struct file *, disk_sector_t);
 void file_close (struct file *);
 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);
 off_t file_length (struct file *);
 void file_seek (struct file *, off_t);
 off_t file_tell (struct file *);