Re: [PATCH] Add the ":" to the allowed_symbols list to work with the latest POSIX changes

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On Tue, 15 Oct 2024 13:35:24 -0400
Laurence Oberman <loberman@xxxxxxxxxx> wrote:

Hello Laurence,
Thanks for the patch.

":" is used internally by native metadata name, we have "hostname:name". We are
searching for it specifically, for that reason I think that I cannot accept it.
Name must stay simple.

If you want this again, I need to full set of mdadm tests that is covering every
scenario and is confirming that we are able to determine hostname (if exists)
and name in every case correctly.

There are some workaround in code for that, I can see that we are not appending
homehost if ":" is in the name. It is not user friendly. I prefer to not
allow ":" to keep in simpler unless you have really good reason to have it back
- there is no reason in commit message.


> Signed-off-by: Laurence Oberman <loberman@xxxxxxxxxx>
> ---
>  lib.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib.c b/lib.c
> index f36ae03a..cb4b6a0f 100644
> --- a/lib.c
> +++ b/lib.c
> @@ -485,7 +485,7 @@ bool is_name_posix_compatible(const char * const name)
>  {
>  	assert(name);
>  
> -	char allowed_symbols[] = "-_.";
> +	char allowed_symbols[] = "-_.:";

Because the function has been made to follow POSIX, this cannot be simply added
here. Please at least explain that in description.

It is not POSIX compatible with this change.


>  	const char *n = name;
>  
>  	if (!is_string_lq(name, NAME_MAX))

Thanks,
Mariusz




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