Working backdoor filesystem implementation.

[pintos-anon] / src / filesys / filesys.c

diff --git a/src/filesys/filesys.c b/src/filesys/filesys.c
index 6b7710aa493b77c2df62e42adfdc7b7829ef0d87..f8348ed2a2eaf4f17182507a9aebce1c47564966 100644 (file)
--- a/src/filesys/filesys.c
+++ b/src/filesys/filesys.c
@@ -1,37 +1,90 @@
 #include "filesys.h"
 
+
 #ifdef FILESYS_STUB
+#include <stdint.h>
+#include "debug.h"
+#include "filesys-stub.h"
+#include "lib.h"
+
 void
 filesys_init (bool reformat) 
 {
   if (reformat)
     printk ("filesystem stubs don't support formatting\n");
+  filesys_stub_init ();
 }
 
 bool
 filesys_create (const char *name) 
 {
-  bool success = false;
-  filesys_stub_send ("s'create' s", name);
-  filesys_stub_receive ("s'create' b", &success);
+  bool success;
+
+  filesys_stub_lock ();
+  filesys_stub_put_string ("create");
+  filesys_stub_put_string (name);
+  filesys_stub_match_string ("create");
+  success = filesys_stub_get_bool ();
+  filesys_stub_unlock ();
+
   return success;
 }
 
 struct file *
 filesys_open (const char *name) 
 {
-  int32_t handle = -1;
-  filesys_stub_stub ("s'open' i", name);
-  filesys_stub_receive ("s'open' i", &handle);
-  return handle == -1 ? NULL : (struct file *) handle;
+  struct file *file;
+
+  filesys_stub_lock ();
+  filesys_stub_put_string ("open");
+  filesys_stub_put_string (name);
+  filesys_stub_match_string ("open");
+  file = filesys_stub_get_file ();
+  filesys_stub_unlock ();
+  
+  return file;
 }
 
 bool
 filesys_remove (const char *name) 
 {
-  bool success = false;
-  filesys_stub_send ("s'create' s", name);
-  filesys_stub_receive ("s'create' b", &success);
+  bool success;
+
+  filesys_stub_lock ();
+  filesys_stub_put_string ("remove");
+  filesys_stub_put_string (name);
+  filesys_stub_match_string ("remove");
+  success = filesys_stub_get_bool ();
+  filesys_stub_unlock ();
+
   return success;
 }
 #endif /* FILESYS_STUB */
+
+#undef NDEBUG
+#include "debug.h"
+#include "file.h"
+
+void
+filesys_self_test (void)
+{
+  static const char s[] = "This is a test string.";
+  struct file *file;
+  char s2[sizeof s];
+
+  ASSERT (filesys_create ("foo"));
+  ASSERT ((file = filesys_open ("foo")) != NULL);
+  ASSERT (file_write (file, s, sizeof s) == sizeof s);
+  ASSERT (file_tell (file) == sizeof s);
+  ASSERT (file_length (file) == sizeof s);
+  file_close (file);
+
+  ASSERT ((file = filesys_open ("foo")) != NULL);
+  ASSERT (file_read (file, s2, sizeof s2) == sizeof s2);
+  ASSERT (memcmp (s, s2, sizeof s) == 0);
+  ASSERT (file_tell (file) == sizeof s2);
+  ASSERT (file_length (file) == sizeof s2);
+  file_close (file);
+
+  ASSERT (filesys_remove ("foo"));
+}