RE: [PATCH] capabilities: use logical OR

From: David Laight
Date: Tue May 30 2023 - 10:06:01 EST


From: Min-Hua Chen <minhuadotchen@xxxxxxxxx>
> Sent: 29 May 2023 23:55
>
> Use logical OR to fix the following sparse warnings:
>
> security/commoncap.c:1358:41: sparse: warning: dubious: !x | y
>
> No functional changes intended.

Except it will run just that teeny, weeny bit slower.

David

> Signed-off-by: Min-Hua Chen <minhuadotchen@xxxxxxxxx>
> ---
> security/commoncap.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/security/commoncap.c b/security/commoncap.c
> index 0b3fc2f3afe7..b8e34f6204b2 100644
> --- a/security/commoncap.c
> +++ b/security/commoncap.c
> @@ -1355,7 +1355,7 @@ int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
> return commit_creds(new);
> }
>
> - if (((!cap_valid(arg3)) | arg4 | arg5))
> + if (((!cap_valid(arg3)) || arg4 || arg5))
> return -EINVAL;
>
> if (arg2 == PR_CAP_AMBIENT_IS_SET) {
> --
> 2.34.1

-
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