Re: [PATCH] grub-probe -t prefix, -t all

[Robert Millan]

On Mon, Oct 29, 2007 at 09:20:00PM +0100, Christian Franke wrote:
> This patch adds '-t prefix', '-t all', and allows multiple -t options to 
> be specified.
> 
> '-t prefix' was initially added to test grub_get_prefix() on Cygwin, but 
> may be useful in scripts.

What does -t prefix do?  Is it the same as
make_system_path_relative_to_its_root () ?  Sounds like I screwed up then :-/

> +#define PRINT_FS     0x01
> +#define PRINT_DRIVE  0x02
> +#define PRINT_PREFIX 0x04
> +#define PRINT_DEVICE 0x08
> +#define PRINT_PARTMAP        0x10

In general, GRUB bitmasks are declared as (1 << 0), (1 << 1), etc.  It'd be
nice to keep this consistent.
 
>    drive_name = grub_util_get_grub_dev (device_name);
>    if (! drive_name)
>      grub_util_error ("cannot find a GRUB drive for %s.\n", device_name);

This check (and possibly others) is an abort condition.  Before your change,
if we reached this point we knew we wanted to abort, but this may not be
true anymore.  Did you check this?

> +  -t, --target=(fs|drive|prefix|device|partmap|all)\n\
> +                            print filesystem module, GRUB drive, path 
> prefix, system device\n\
> +                            or partition map module [default=fs]\n\

Uhm what's the purpose of `-t all' ?  grub-probe is only intended to be
called by scripts.

-- 
Robert Millan

<GPLv2> I know my rights; I want my phone call!
<DRM> What use is a phone call, if you are unable to speak?
(as seen on /.)