implement create()

1 files changed, 12 insertions, 2 deletions

diff --git a/src/userprog/syscall.c b/src/userprog/syscall.c
index d53c1bd..5e5a6f1 100644
--- a/src/userprog/syscall.c
+++ b/src/userprog/syscall.c
@@ -1,10 +1,13 @@
 #include "userprog/syscall.h"
 #include <stdio.h>
 #include <syscall-nr.h>
-#include "threads/init.h"
 #include "threads/interrupt.h"
 #include "threads/thread.h"
 
+#include "threads/init.h"
+#include "filesys/filesys.h"
+#include "filesys/off_t.h"
+
 static void syscall_handler (struct intr_frame *);
 
 void
@@ -30,6 +33,14 @@ syscall_handler (struct intr_frame *f UNUSED)
       break;
     case 4:
       // create
+      ; // empty statement because c-grammar doesn't allow declarations following labels
+      printf("kernel: create\n");
+      char *filename = INTR_ESP(1, char *);
+      printf("create: read filename '%s'\n", filename);
+      off_t initial_size = INTR_ESP(2, off_t);
+      printf("create: read initial_size '%d'\n", initial_size);
+      f->eax = filesys_create(filename, initial_size);
+      printf("create: result (%d) put in f->eax\n", f->eax);
       break;
     case 6:
       // open
@@ -48,5 +59,4 @@ syscall_handler (struct intr_frame *f UNUSED)
       printf ("kernel: unknown syscall '%d'\n", syscall_number);
       break;
   }
-  thread_exit ();
 }