[pve-devel] [PATCH 3/9] add find_loopdev sub

[Wolfgang Bumiller]

Somehow I missed this before, but this looks like a generic "find key
for value" function.
If getting the first element of
    grep { $hash->{$_} eq $key } keys %$hash
is too much typing work, maybe a generic find in Tools might be called
for? (The only difference to grep is that it's only looking for a single
key, while grep returns a list.)

On Sun, Aug 16, 2015 at 07:43:00PM +0200, Alexandre Derumier wrote:
> Signed-off-by: Alexandre Derumier <aderumier at odiso.com>
> ---
>  src/PVE/LXC.pm | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/src/PVE/LXC.pm b/src/PVE/LXC.pm
> index fbdc5bb..10a89f2 100644
> --- a/src/PVE/LXC.pm
> +++ b/src/PVE/LXC.pm
> @@ -1800,4 +1800,11 @@ sub blockdevices_list {
>      return $bdevs;
>  }
>  
> +sub find_loopdev {
> +    my ($loopdevs, $path) = @_;
> +
> +    foreach my $dev (keys %$loopdevs){
> +	return $dev if $loopdevs->{$dev} eq $path;
> +    }
> +}
>  1;
> -- 
> 2.1.4
> 
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