Changeset 23b56ca in mainline

Timestamp:

2008-10-26T17:26:32Z (16 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

8bc6fcf

Parents:

700eaa9

Message:

Implementation of fat_mark_cluster().

File:

• uspace/srv/fs/fat/fat_fat.c (modified) (1 diff)

uspace/srv/fs/fat/fat_fat.c

@@ -214 +214 @@
     fat_cluster_t value)
 {
-        /* TODO */
+        block_t *bb, *blk;
+        uint16_t bps;
+        uint16_t rscnt;
+        uint16_t sf;
+        uint8_t fatcnt;
+        fat_cluster_t *cp;
+
+        bb = block_get(dev_handle, BS_BLOCK, BS_SIZE);
+        bps = uint16_t_le2host(FAT_BS(bb)->bps);
+        rscnt = uint16_t_le2host(FAT_BS(bb)->rscnt);
+        sf = uint16_t_le2host(FAT_BS(bb)->sec_per_fat);
+        fatcnt = FAT_BS(bb)->fatcnt;
+        block_put(bb);
+
+        assert(fatno < fatcnt);
+        blk = block_get(dev_handle, rscnt + sf * fatno +
+            (clst * sizeof(fat_cluster_t)) / bps, bps);
+        cp = (fat_cluster_t *)blk->data + clst % (bps / sizeof(fat_cluster_t));
+        *cp = host2uint16_t_le(value);
+        blk->dirty = true;              /* need to sync block */
+        block_put(blk);
 }