Function Ext2AddBlockExtent

Ext4Fsd/memory.c:1024–1055

BOOLEAN
Ext2AddBlockExtent(
    IN PEXT2_VCB    Vcb,
    IN PEXT2_MCB    Mcb,
    IN ULONG        Start,
    IN ULONG        Block,
    IN ULONG        Number
)
{
    LONGLONG    Vbn = 0;
    LONGLONG    Lbn = 0;
    LONGLONG    Length = 0;

    Vbn = ((LONGLONG) Start) << BLOCK_BITS;
    Lbn = ((LONGLONG) Block) << BLOCK_BITS;
    Length = ((LONGLONG)Number << BLOCK_BITS);

    if (Mcb) {
#if EXT2_DEBUG
        ULONG   _block = 0, _mapped = 0;
        BOOLEAN _rc = Ext2LookupBlockExtent(Vcb, Mcb, Start, &_block, &_mapped);
        if (_rc && _block != 0 && (_block != Block)) {
            DbgBreak();
        }
#endif
        return Ext2AddMcbExtent(Vcb, Mcb, Vbn, Lbn, Length);

    }

    ASSERT(Start == Block);
    return Ext2AddVcbExtent(Vcb, Vbn, Length);
}


BOOLEAN