X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fio%2Fkblock.c;h=117c3e9b48ef3b9b51b43f134778580c87ea2df6;hb=d86a921be38f9dfe999bfd36bc3a8e76a2ad929f;hp=616e7bcd00232b254ced0cc6c732f54255f13820;hpb=04800615c9d06d85adc7c7b1487ad4e3007c6e67;p=bertos.git

diff --git a/bertos/io/kblock.c b/bertos/io/kblock.c
index 616e7bcd..117c3e9b 100644
--- a/bertos/io/kblock.c
+++ b/bertos/io/kblock.c
@@ -100,7 +100,6 @@ INLINE void kblock_setDirty(struct KBlock *b, bool dirty)
 }
 
 
-
 size_t kblock_read(struct KBlock *b, block_idx_t idx, void *buf, size_t offset, size_t size)
 {
 	ASSERT(b);
@@ -150,6 +149,23 @@ static bool kblock_loadPage(struct KBlock *b, block_idx_t idx)
 }
 
 
+int kblock_trim(struct KBlock *b, block_idx_t start, block_idx_t count)
+{
+	ASSERT(start + count <= b->blk_cnt);
+
+	if (kblock_buffered(b))
+	{
+		if (!kblock_loadPage(b, start))
+			return EOF;
+	}
+
+	b->priv.blk_start += start;
+	b->priv.curr_blk = 0; // adjust logical address
+	b->blk_cnt = count;
+	return 0;
+}
+
+
 size_t kblock_write(struct KBlock *b, block_idx_t idx, const void *buf, size_t offset, size_t size)
 {
 	ASSERT(b);
@@ -258,3 +274,8 @@ size_t kblock_swWriteBuf(struct KBlock *b, const void *buf, size_t offset, size_
 	memcpy((uint8_t *)b->priv.buf + offset, buf, size);
 	return size;
 }
+
+int kblock_swClose(UNUSED_ARG(struct KBlock, *b))
+{
+	return 0;
+}