From 88ff6a98323a78ee3334a55c2eac6de17cb10316 Mon Sep 17 00:00:00 2001
From: Alex Stratford <alexander3.stratford@live.uwe.ac.uk>
Date: Wed, 4 Dec 2019 15:56:53 +0000
Subject: [PATCH] Fixed other issues
---
userprog/syscall.c | 3 +++
userprog/system_calls.h | 5 +++++
2 files changed, 8 insertions(+)
diff --git a/userprog/syscall.c b/userprog/syscall.c
index a104087..e6abc56 100644
--- a/userprog/syscall.c
+++ b/userprog/syscall.c
@@ -79,6 +79,9 @@ syscall_handler (struct intr_frame *f UNUSED)
case SYSCALL_OPEN:
syscall_open(f);
break;
+ case SYSCALL_FILESIZE:
+ syscall_filesize(f);
+ break;
default:
printf ("WARNING: Invalid Syscall (%d)\n", syscall_number);
thread_exit ();
diff --git a/userprog/system_calls.h b/userprog/system_calls.h
index 8dc87c9..ce7ae18 100644
--- a/userprog/system_calls.h
+++ b/userprog/system_calls.h
@@ -49,6 +49,11 @@ void syscall_write(struct intr_frame *f);
*/
void syscall_open(struct intr_frame *f);
+/*
+ * Returns the size, in bytes, of the file open as fd.
+ */
+void syscall_filesize(struct intr_frame *f);
+
/*
* Deletes the file called file. Returns true if successful, false otherwise.
* A file may be removed regardless of whether it is open or closed, and
--
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