Add support for devices which can partial write a block.

[bertos.git] / bertos / io / kblock_file.c

diff --git a/bertos/io/kblock_file.c b/bertos/io/kblock_file.c
index ae680815ade31890bcd18693a2f3bf405819e18a..cd18431d101c6b141804d0651a721d2f05efa7b2 100644 (file)
--- a/bertos/io/kblock_file.c
+++ b/bertos/io/kblock_file.c
@@ -79,13 +79,13 @@ static size_t kblockfile_writeBuf(struct KBlock *b, const void *buf, size_t offs
        return size;
 }
 
-static int kblockfile_writeBlock(struct KBlock *b, block_idx_t index, const void *buf)
+static size_t kblockfile_writeDirect(struct KBlock *b, block_idx_t index, const void *buf, size_t offset, size_t size)
 {
        KBlockFile *f = KBLOCKFILE_CAST(b);
        ASSERT(buf);
        ASSERT(index < b->blk_cnt);
-       fseek(f->fp, index * b->blk_size, SEEK_SET);
-       return (fwrite(f->b.priv.buf, 1, b->blk_size, f->fp) == b->blk_size) ? 0 : EOF;
+       fseek(f->fp, index * b->blk_size + offset, SEEK_SET);
+       return fwrite(buf, 1, size, f->fp);
 }
 
 static int kblockfile_error(struct KBlock *b)
@@ -119,7 +119,7 @@ static const KBlockVTable kblockfile_hwbuffered_vt =
        .writeBuf = kblockfile_writeBuf,
        .load = kblockfile_load,
        .store = kblockfile_store,
-       
+
        .error = kblockfile_error,
        .clearerr = kblockfile_claererr,
        .close = kblockfile_close,
@@ -128,13 +128,13 @@ static const KBlockVTable kblockfile_hwbuffered_vt =
 static const KBlockVTable kblockfile_swbuffered_vt =
 {
        .readDirect = kblockfile_readDirect,
-       .writeBlock =kblockfile_writeBlock,
-       
+       .writeDirect =kblockfile_writeDirect,
+
        .readBuf = kblock_swReadBuf,
        .writeBuf = kblock_swWriteBuf,
        .load = kblock_swLoad,
        .store = kblock_swStore,
-       
+
        .error = kblockfile_error,
        .clearerr = kblockfile_claererr,
        .close = kblockfile_close,
@@ -143,7 +143,7 @@ static const KBlockVTable kblockfile_swbuffered_vt =
 static const KBlockVTable kblockfile_unbuffered_vt =
 {
        .readDirect = kblockfile_readDirect,
-       .writeBlock =kblockfile_writeBlock,
+       .writeDirect =kblockfile_writeDirect,
 
        .error = kblockfile_error,
        .clearerr = kblockfile_claererr,
@@ -165,7 +165,8 @@ void kblockfile_init(KBlockFile *f, FILE *fp, bool hwbuf, void *buf, size_t bloc
        f->fp = fp;
        f->b.blk_size = block_size;
        f->b.blk_cnt = block_count;
-       
+
+       f->b.priv.flags |= KB_PARTIAL_WRITE;
        if (buf)
        {
                f->b.priv.flags |= KB_BUFFERED;