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[RFC,0/3] powerpc/ps3: refactor strncpy usage

Message ID 20230811-strncpy-arch-powerpc-platforms-ps3-v1-0-301052a5663e@google.com (mailing list archive)
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Series powerpc/ps3: refactor strncpy usage | expand

Message

Justin Stitt Aug. 11, 2023, 9:19 p.m. UTC
Within this RFC-series I want to get some comments on two ideas that I
have for refactoring the current `strncpy` usage in repository.c.

When looking at `make_first_field` we see a u64 is being used to store
up to 8 bytes from a literal string. This is slightly suspect to me but
it works? In regards to `strncpy` here, it makes the code needlessly
complex imo.

Please see my two ideas to change this and let me know if any other
approaches are more reasonable.

Link: https://github.com/KSPP/linux/issues/90
Signed-off-by: Justin Stitt <justinstitt@google.com>
---
Justin Stitt (3):
      [RFC] powerpc/ps3: refactor strncpy usage attempt 1
      [RFC] powerpc/ps3: refactor strncpy usage attempt 2
      [RFC] powerpc/ps3: refactor strncpy usage attempt 2.5

 arch/powerpc/platforms/ps3/repository.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)
---
base-commit: 52a93d39b17dc7eb98b6aa3edb93943248e03b2f
change-id: 20230811-strncpy-arch-powerpc-platforms-ps3-57a1cdb2ad9b

Best regards,
--
Justin Stitt <justinstitt@google.com>

Comments

Justin Stitt Aug. 11, 2023, 9:25 p.m. UTC | #1
On Fri, Aug 11, 2023 at 2:19 PM Justin Stitt <justinstitt@google.com> wrote:
>
> Within this RFC-series I want to get some comments on two ideas that I
> have for refactoring the current `strncpy` usage in repository.c.
>
> When looking at `make_first_field` we see a u64 is being used to store
> up to 8 bytes from a literal string. This is slightly suspect to me but
> it works? In regards to `strncpy` here, it makes the code needlessly
> complex imo.
>
> Please see my two ideas to change this and let me know if any other
> approaches are more reasonable.
>
> Link: https://github.com/KSPP/linux/issues/90
> Signed-off-by: Justin Stitt <justinstitt@google.com>
> ---
> Justin Stitt (3):
>       [RFC] powerpc/ps3: refactor strncpy usage attempt 1
>       [RFC] powerpc/ps3: refactor strncpy usage attempt 2
>       [RFC] powerpc/ps3: refactor strncpy usage attempt 2.5
Errhm, It looks like the diffs after attempt 1 came out poorly and
probably won't apply cleanly because they were inter-diffed with the
first patch. Is there a way to let b4 know I wanted each patch diff'd
against the same SHA and not each other sequentially?

As it stands only attempt 1 is readable.

>
>  arch/powerpc/platforms/ps3/repository.c | 7 +++----
>  1 file changed, 3 insertions(+), 4 deletions(-)
> ---
> base-commit: 52a93d39b17dc7eb98b6aa3edb93943248e03b2f
> change-id: 20230811-strncpy-arch-powerpc-platforms-ps3-57a1cdb2ad9b
>
> Best regards,
> --
> Justin Stitt <justinstitt@google.com>
>
Michael Ellerman Aug. 14, 2023, 12:31 p.m. UTC | #2
Justin Stitt <justinstitt@google.com> writes:
> On Fri, Aug 11, 2023 at 2:19 PM Justin Stitt <justinstitt@google.com> wrote:
>>
>> Within this RFC-series I want to get some comments on two ideas that I
>> have for refactoring the current `strncpy` usage in repository.c.
>>
>> When looking at `make_first_field` we see a u64 is being used to store
>> up to 8 bytes from a literal string. This is slightly suspect to me but
>> it works? In regards to `strncpy` here, it makes the code needlessly
>> complex imo.
>>
>> Please see my two ideas to change this and let me know if any other
>> approaches are more reasonable.
>>
>> Link: https://github.com/KSPP/linux/issues/90
>> Signed-off-by: Justin Stitt <justinstitt@google.com>
>> ---
>> Justin Stitt (3):
>>       [RFC] powerpc/ps3: refactor strncpy usage attempt 1
>>       [RFC] powerpc/ps3: refactor strncpy usage attempt 2
>>       [RFC] powerpc/ps3: refactor strncpy usage attempt 2.5
> Errhm, It looks like the diffs after attempt 1 came out poorly and
> probably won't apply cleanly because they were inter-diffed with the
> first patch. Is there a way to let b4 know I wanted each patch diff'd
> against the same SHA and not each other sequentially?

I don't think there is. It always assumes they're a series.

cheers