Changeset 5f116e7 in mainline

Timestamp:

2009-08-12T20:44:42Z (15 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

d290ef4

Parents:

b713492b

Message:

Introduce fat_zero_cluster().

Location:

uspace/srv/fs/fat

Files:

• fat_fat.c (modified) (1 diff)
• fat_fat.h (modified) (1 diff)
• fat_ops.c (modified) (1 diff)

uspace/srv/fs/fat/fat_fat.c

@@ -451 +451 @@
 }
 
+void
+fat_zero_cluster(struct fat_bs *bs, dev_handle_t dev_handle, fat_cluster_t c)
+{
+        int i;
+        block_t *b;
+        unsigned bps;
+
+        bps = uint16_t_le2host(bs->bps);
+        
+        for (i = 0; i < bs->spc; i++) {
+                b = _fat_block_get(bs, dev_handle, c, i, BLOCK_FLAGS_NOREAD);
+                memset(b->data, 0, bps);
+                b->dirty = true;
+                block_put(b);
+        }
+}
+
 /**
  * @}

uspace/srv/fs/fat/fat_fat.h

@@ -84 +84 @@
 extern void fat_fill_gap(struct fat_bs *, struct fat_node *, fat_cluster_t,
     off_t);
+extern void fat_zero_cluster(struct fat_bs *, dev_handle_t, fat_cluster_t);
 
 #endif

uspace/srv/fs/fat/fat_ops.c

@@ -332 +332 @@
         /* idxp->lock held */
         if (flags & L_DIRECTORY) {
-                int i;
-                block_t *b;
-
-                /*
-                 * Populate the new cluster with unused dentries.
-                 */
-                for (i = 0; i < bs->spc; i++) {
-                        b = _fat_block_get(bs, dev_handle, mcl, i,
-                            BLOCK_FLAGS_NOREAD);
-                        /* mark all dentries as never-used */
-                        memset(b->data, 0, bps);
-                        b->dirty = true;
-                        block_put(b);
-                }
+                /* Populate the new cluster with unused dentries. */
+                fat_zero_cluster(bs, dev_handle, mcl);
                 nodep->type = FAT_DIRECTORY;
                 nodep->firstc = mcl;