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-rw-r--r--cpukit/libfs/src/dosfs/fat_file.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/cpukit/libfs/src/dosfs/fat_file.c b/cpukit/libfs/src/dosfs/fat_file.c
index 0cd5f286db..8452ee8491 100644
--- a/cpukit/libfs/src/dosfs/fat_file.c
+++ b/cpukit/libfs/src/dosfs/fat_file.c
@@ -532,9 +532,10 @@ fat_file_extend(
/* check wether we satisfied request for 'cls2add' clusters */
if (cls2add != cls_added)
- *a_length = new_length -
- ((cls2add - cls_added - 1) << fs_info->vol.bpc_log2) -
- (bytes2add & (fs_info->vol.bpc - 1));
+ {
+ new_length -= bytes2add & (fs_info->vol.bpc - 1);
+ new_length -= (cls2add - cls_added) << fs_info->vol.bpc_log2;
+ }
/* add new chain to the end of existed */
if ( fat_fd->fat_file_size == 0 )
@@ -583,6 +584,7 @@ fat_file_extend(
}
}
+ *a_length = new_length;
fat_fd->fat_file_size = new_length;
return RC_OK;