[Libguestfs] [PATCH 06/10] Rearrange and tidy up code in guestfsd.c

[Jim Meyering]

Richard W.M. Jones wrote:
> From: Richard Jones <rjones at trick.home.annexia.org>
>
> This just tidies up the main() function in the daemon.  There is
> no longer a huge fixed-sized buffer used for the kernel command
> line.  Variables are moved closer to where they are used.  Some
> local variables turned out to be unused - these are removed.  Finally
> the part that reads the kernel command line is moved into a separate
> function.
>
> There is only minimal functional change here (it now prints out
> the kernel command line).
...

Nicely improved readability.
ACK

> +  char lenbuf[4];
> +  XDR xdr;
> +  uint32_t len = GUESTFS_LAUNCH_FLAG;
> +  xdrmem_create (&xdr, lenbuf, sizeof lenbuf, XDR_ENCODE);
> +  xdr_uint32_t (&xdr, &len);
>
> -  if (xwrite (sock, buf, xdr_getpos (&xdr)) == -1)
> +  if (xwrite (sock, lenbuf, 4) == -1)

Can you replace that literal 4 ?
maybe with "sizeof lenbuf"