linux-kernel - Re: [PATCH] bpftool: Fix wrong format output

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Message-ID: <80690ecf-2d21-460c-b031-8133ca571e7c@kernel.org>
Date: Thu, 21 Nov 2024 11:42:06 +0000
From: Quentin Monnet <qmo@...nel.org>
To: liujing <liujing@...s.chinamobile.com>
Cc: ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
 martin.lau@...ux.dev, eddyz87@...il.com, song@...nel.org,
 yonghong.song@...ux.dev, john.fastabend@...il.com, kpsingh@...nel.org,
 sdf@...ichev.me, haoluo@...gle.com, jolsa@...nel.org, bpf@...r.kernel.org,
 linux-kernel@...r.kernel.org, liujing <liujing_yewu@...s.chinamobile.com>
Subject: Re: [PATCH] bpftool: Fix wrong format output

2024-11-21 16:47 UTC+0800 ~ liujing <liujing@...s.chinamobile.com>
> From: liujing <liujing_yewu@...s.chinamobile.com>
> 
> %d in format string requires 'int' but the argument type
> of pf is 'unsigned int'.
> 
> Signed-off-by: liujing <liujing@...s.chinamobile.com>
> 
> diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c
> index 5cd503b763d7..5bc442d93456 100644
> --- a/tools/bpf/bpftool/link.c
> +++ b/tools/bpf/bpftool/link.c
> @@ -699,7 +699,7 @@ void netfilter_dump_plain(const struct bpf_link_info *info)
>  	if (pfname)
>  		printf("\n\t%s", pfname);
>  	else
> -		printf("\n\tpf: %d", pf);
> +		printf("\n\tpf: %u", pf);
>  
>  	if (hookname)
>  		printf(" %s", hookname);


Thanks, but while at it can you also fix the format specifier for the
other two prints of "lines" in the function (via "p_err()"), please?

Quentin