From: Isaac Boukris <ibouk...@gmail.com>
Date: Sat, 29 Oct 2016 22:20:20 +0300
> Abstract unix domain socket may embed null characters,
> these should be translated to '@' when printed out to
> proc the same way the null prefix is currently being
> translated.
>
> This helps for tools such as netstat, lsof and the proc
> based implementation in ss to show all the significant
> bytes of the name (instead of getting cut at the first
> null occurrence).
>
> Signed-off-by: Isaac Boukris <ibouk...@gmail.com>
...
> @@ -2805,14 +2805,19 @@ static int unix_seq_show(struct seq_file *seq, void
> *v)
>
> i = 0;
> len = u->addr->len - sizeof(short);
> - if (!UNIX_ABSTRACT(s))
> + if (!UNIX_ABSTRACT(s)) {
> len--;
> - else {
> + for ( ; i < len; i++)
> + seq_putc(seq,
> + u->addr->name->sun_path[i]);
> + } else {
> seq_putc(seq, '@');
> i++;
> + for ( ; i < len; i++)
> + seq_putc(seq,
> + u->addr->name->sun_path[i] ?:
> + '@');
> }
> - for ( ; i < len; i++)
> - seq_putc(seq, u->addr->name->sun_path[i]);
I think this patch is simpler if you just do the "@" translation
unconditionally, if it'll never trigger for the !UNIX_ABSTRACT case
that is perfectly fine.
