From: Ben Pfaff <blp@cs.stanford.edu>
Date: Mon, 30 Aug 2004 22:55:58 +0000 (+0000)
Subject: Add bitmap_read(), bitmap_write().
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af8e2a61dcde1dfb4d25178e2e193861a2173032;p=pintos-anon

Add bitmap_read(), bitmap_write().
---

diff --git a/src/lib/bitmap.c b/src/lib/bitmap.c
index 46235b2..593e509 100644
--- a/src/lib/bitmap.c
+++ b/src/lib/bitmap.c
@@ -4,6 +4,9 @@
 #include "debug.h"
 #include "lib.h"
 #include "malloc.h"
+#ifdef FILESYS
+#include "file.h"
+#endif
 
 #define ELEM_BITS (sizeof (elem_type) * CHAR_BIT)
 #define ELEM_IDX(BIT_IDX) ((BIT_IDX) / ELEM_BITS)
@@ -218,3 +221,17 @@ bitmap_all (const struct bitmap *b)
   else
     return b->bits[i] == ((elem_type) 1 << leftover_bits) - 1;
 }
+
+#ifdef FILESYS
+void
+bitmap_read (struct bitmap *b, struct file *file) 
+{
+  file_read_at (file, b->bits, byte_cnt (b), 0);
+}
+
+void
+bitmap_write (const struct bitmap *b, struct file *file)
+{
+  file_write_at (file, b->bits, byte_cnt (b), 0);
+}
+#endif /* FILESYS */
diff --git a/src/lib/bitmap.h b/src/lib/bitmap.h
index 896a1e8..d3bda40 100644
--- a/src/lib/bitmap.h
+++ b/src/lib/bitmap.h
@@ -39,4 +39,10 @@ bool bitmap_any (const struct bitmap *);
 bool bitmap_none (const struct bitmap *);
 bool bitmap_all (const struct bitmap *);
 
+#ifdef FILESYS
+struct file;
+void bitmap_read (struct bitmap *, struct file *);
+void bitmap_write (const struct bitmap *, struct file *);
+#endif
+
 #endif /* bitmap.h */