Changeset 8a06c1b in mainline

Timestamp:

2011-08-15T17:19:23Z (13 years ago)

Author:

Oleg Romanenko <romanenko.oleg@…>

Branches:

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

Children:

7d78d163

Parents:

d9aeab3

Message:

exFAT: implement exfat_zero_cluster

Location:

uspace/srv/fs/exfat

Files:

• exfat_fat.c (modified) (2 diffs)
• exfat_fat.h (modified) (1 diff)

uspace/srv/fs/exfat/exfat_fat.c

@@ -194 +194 @@
         int rc;
 
-        if (fcl < EXFAT_CLST_FIRST)
+        if (fcl < EXFAT_CLST_FIRST || fcl > DATA_CNT(bs)+2)
                 return ELIMIT;
 
@@ -476 +476 @@
 }
 
+int
+exfat_zero_cluster(exfat_bs_t *bs, devmap_handle_t devmap_handle, exfat_cluster_t c)
+{
+        size_t i;
+        block_t *b;
+        int rc;
+
+        for (i = 0; i < SPC(bs); i++) {
+                rc = exfat_block_get_by_clst(&b, bs, devmap_handle, false, c, NULL, i,
+                    BLOCK_FLAGS_NOREAD);
+                if (rc != EOK)
+                        return rc;
+                memset(b->data, 0, BPS(bs));
+                b->dirty = true;
+                rc = block_put(b);
+                if (rc != EOK)
+                        return rc;
+        }
+
+        return EOK;
+}
+
 /** Perform basic sanity checks on the file system.
  *

uspace/srv/fs/exfat/exfat_fat.h

@@ -83 +83 @@
     exfat_cluster_t *, exfat_cluster_t *);
 extern int exfat_free_clusters(struct exfat_bs *, devmap_handle_t, exfat_cluster_t);
-
+extern int exfat_zero_cluster(struct exfat_bs * bs, devmap_handle_t devmap_handle, 
+    exfat_cluster_t mcl);
 
 #endif