Re: [PATCH] proc/fd: Remove the initialization of variables in seq_show()

[Tao pilgrim]

> > The variables{files, file} will definitely be assigned,
>
> I find an other specification nicer for these identifiers.
>
>
> > so we don't need to initialize them.
>
> I suggest to recheck programming concerns around the handling
> of the null pointer for the variable âfileâ.
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/fs/proc/fd.c?id=caffb99b6929f41a69edbb5aef3a359bf45f3315#n20
> https://elixir.bootlin.com/linux/v5.7-rc6/source/fs/proc/fd.c#L20

We don't need to initialize the variable âfileâ.
On line 34, if (files) is true,
{file = fcheck_files(files, fd)} will be executed on line 38.
On line 34, if (files) is flse,
{return ret;} will be executed on line 54, and seq_show() will exit directly.
I don't find the programming concerns around the handling of the null
pointer for the variable âfileâ.

If you have other suggestions, please elaborate on the details.

--
Yours,
Kaitao Cheng