netdev - Re: [PATCH v4 bpf-next 2/3] bpf: Support "%c" in bpf_bprintf

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Message-ID: <498d3ae8-bcc9-511d-d8d0-7f5a847123f2@fb.com>
Date:   Tue, 10 Aug 2021 16:32:42 -0700
From:   Yonghong Song <yhs@...com>
To:     Kuniyuki Iwashima <kuniyu@...zon.co.jp>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>
CC:     Benjamin Herrenschmidt <benh@...zon.com>,
        Kuniyuki Iwashima <kuni1840@...il.com>, <bpf@...r.kernel.org>,
        <netdev@...r.kernel.org>
Subject: Re: [PATCH v4 bpf-next 2/3] bpf: Support "%c" in
 bpf_bprintf_prepare().



On 8/10/21 2:28 AM, Kuniyuki Iwashima wrote:
> /proc/net/unix uses "%c" to print a single-byte character to escape '\0' in
> the name of the abstract UNIX domain socket.  The following selftest uses
> it, so this patch adds support for "%c".  Note that it does not support
> wide character ("%lc" and "%llc") for simplicity.
> 
> Signed-off-by: Kuniyuki Iwashima <kuniyu@...zon.co.jp>

Acked-by: Yonghong Song <yhs@...com>