Function Ext2WriteSymlink

Ext4Fsd/fsctl.c:1516–1567

NTSTATUS
Ext2WriteSymlink (
    IN PEXT2_IRP_CONTEXT    IrpContext,
    IN PEXT2_VCB            Vcb,
    IN PEXT2_MCB            Mcb,
    IN PVOID                Buffer,
    IN ULONG                Size,
    OUT PULONG              BytesWritten
)
{
    NTSTATUS Status = STATUS_SUCCESS;
    PUCHAR   Data = (PUCHAR)(&Mcb->Inode.i_block[0]);

    if (Size >= EXT2_LINKLEN_IN_INODE) {

        /* initialize inode i_block[] */
        if (0 == Mcb->Inode.i_blocks) {
            memset(Data, 0, EXT2_LINKLEN_IN_INODE);
            ClearFlag(Mcb->Inode.i_flags, EXT4_EXTENTS_FL);
            Ext2SaveInode(IrpContext, Vcb, &Mcb->Inode);
        }

        Status = Ext2WriteInode(IrpContext, Vcb, Mcb,
                                0, Buffer, Size,
                                FALSE, BytesWritten);
        if (!NT_SUCCESS(Status)) {
            goto out;
        }

    } else {

        /* free inode blocks before writing in line */
        if (Mcb->Inode.i_blocks) {
            LARGE_INTEGER Zero = {0, 0};
            Ext2TruncateFile(IrpContext, Vcb, Mcb, &Zero);
        }

        ClearFlag(Mcb->Inode.i_flags, EXT4_EXTENTS_FL);
        memset(Data, 0, EXT2_LINKLEN_IN_INODE);
        RtlCopyMemory(Data, Buffer, Size);
    }

    Mcb->Inode.i_size = Size;
    Ext2SaveInode(IrpContext, Vcb, &Mcb->Inode);

    if (BytesWritten) {
        *BytesWritten = Size;
    }

out:
    return Status;
}

NTSTATUS
Ext2SetReparsePoint (IN PEXT2_IRP_CONTEXT IrpContext)