[PATCH v6 7/9] tracing: Replace strncpy() with strscpy()

[Justin Stitt]

On Tue, Aug 13, 2024 at 3:19 PM Justin Stitt <justinstitt at google.com> wrote:
>
> Hi,
>
> On Mon, Aug 12, 2024 at 10:29:31AM GMT, Yafang Shao wrote:
> > Using strscpy() to read the task comm ensures that the name is
> > always NUL-terminated, regardless of the source string. This approach also
> > facilitates future extensions to the task comm.
>
> Thanks for sending patches replacing str{n}cpy's!
>
> I believe there's at least two more instances of strncpy in trace.c as
> well as in trace_events_hist.c (for a grand total of 6 instances in the
> files you've touched in this specific patch).
>
> It'd be great if you could replace those instances in this patch as well :>)
>
> This would help greatly with [1].
>

I just saw that Jinjie Ruan sent replacements for these strncpy's too
and tracked down and replaced an instance of strscpy() that was
present in trace.c but was moved to trace_sched_switch.c during a
refactor.

They even used the new 2-argument strscpy which is pretty neat.

See their patch here:
https://lore.kernel.org/all/20240731075058.617588-1-ruanjinjie@huawei.com/

> Link: https://github.com/KSPP/linux/issues/90 [1]
> Link: https://lore.kernel.org/all/CAHk-=whWtUC-AjmGJveAETKOMeMFSTwKwu99v7+b6AyHMmaDFA@mail.gmail.com/ [2]
>
> Thanks
> Justin