From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 83BFA1C3027 for ; Mon, 4 Aug 2025 11:55:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754308519; cv=none; b=feJ66n4kEkRvjipS63ABkmgkgQAR9EqDcr6faktL4oWZuq01jRbApzn2vH5GSOQIT6EZTwSh94iR3VVF3PJU6YosOFR0bz/SyhdQUqPfMmA/TMHvXkxKyuAkoBelzsJ67xKRhH2DyhkU3EpF/Zf7sUD+IZIvTg4GP7etPtKW9ds= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754308519; c=relaxed/simple; bh=byy5sj418Pv+SR1uG5AnkBMv+z0b8i7J2zYNKGzxR1E=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=R4sRoZ7oa0KPK2OSqy72Kz5WcoRkuvJOifOIdkGhcrLfycVlZuvWtkMspWsPK/m90ypSUFJ2vjg9Agm0rJkljMf0UDPz6KM7UfZNy5UV9PL+6TpWS2ZkQmOWSPmgTvblfCT6H0TgaQfC2SsG6LkbUHgCfi3862qwOqH5qZXNZxo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ksyGZQhk; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ksyGZQhk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8B2A6C4CEE7; Mon, 4 Aug 2025 11:55:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754308518; bh=byy5sj418Pv+SR1uG5AnkBMv+z0b8i7J2zYNKGzxR1E=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=ksyGZQhkGLyvLQePsDlIiYFjtCT68FeAs1ed6gpboKigS2u2bg56hGE/bxRUjQTgD zFWm+BYwCcWbpmXnguf6S2m/gXE8QzKHAZ9Udvw3BOmHjru8GHGg88e+x5Gi32lBJ7 T/BY6bnmSEG0Cpx3DNG4aF1QXx6zwY7X0/U/GEQF1NrgkDfkVaElmKUJSbO60gY0s5 Ofxv8uJ7KOYCLnxIHx5WMGdNgbzxlMu6ksu2Llp8PIDyR+lZPCih9L62jS21R8kjKb 2E6lpEunOvbD12Yb7/sfA71a/vN8d9tPAa9jn0mZt35eFTiyFDyFt01ZEKW/X4Ps3m vUh2P4M+e8ysg== Message-ID: <0067724225d7c5590b840b4bc1c373a1b7973d87.camel@kernel.org> Subject: Re: [PATCH] nfsd: Replace open-coded conversion of bytes to hex From: Jeff Layton To: Eric Biggers , Chuck Lever , linux-nfs@vger.kernel.org Cc: NeilBrown , Olga Kornievskaia , Dai Ngo , Tom Talpey Date: Mon, 04 Aug 2025 07:55:16 -0400 In-Reply-To: <20250803212448.117174-1-ebiggers@kernel.org> References: <20250803212448.117174-1-ebiggers@kernel.org> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV T2h6v8i8YqsATFPwO4nuiTmL6I40ZofxVd+9wdRI4Db8yUNA4ZSP2nqLcLtFjClYRBoJvRWvsv4lm 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sprintf() has conversion to hex built-in via > "%*phN", delete md5_to_hex() and just use that. Also add an explicit > array bound to the dname parameter of nfs4_make_rec_clidname() to make > its size clear. No functional change. >=20 > Signed-off-by: Eric Biggers > --- > fs/nfsd/nfs4recover.c | 18 ++---------------- > 1 file changed, 2 insertions(+), 16 deletions(-) >=20 > diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c > index 2231192ec33f5..54f5e5392ef9d 100644 > --- a/fs/nfsd/nfs4recover.c > +++ b/fs/nfsd/nfs4recover.c > @@ -90,26 +90,12 @@ static void > nfs4_reset_creds(const struct cred *original) > { > put_cred(revert_creds(original)); > } > =20 > -static void > -md5_to_hex(char *out, char *md5) > -{ > - int i; > - > - for (i=3D0; i<16; i++) { > - unsigned char c =3D md5[i]; > - > - *out++ =3D '0' + ((c&0xf0)>>4) + (c>=3D0xa0)*('a'-'9'-1); > - *out++ =3D '0' + (c&0x0f) + ((c&0x0f)>=3D0x0a)*('a'-'9'-1); > - } > - *out =3D '\0'; > -} > - > static int > -nfs4_make_rec_clidname(char *dname, const struct xdr_netobj *clname) > +nfs4_make_rec_clidname(char dname[HEXDIR_LEN], const struct xdr_netobj *= clname) > { > struct xdr_netobj cksum; > struct crypto_shash *tfm; > int status; > =20 > @@ -131,11 +117,11 @@ nfs4_make_rec_clidname(char *dname, const struct xd= r_netobj *clname) > status =3D crypto_shash_tfm_digest(tfm, clname->data, clname->len, > cksum.data); > if (status) > goto out; > =20 > - md5_to_hex(dname, cksum.data); > + sprintf(dname, "%*phN", 16, cksum.data); > =20 > status =3D 0; > out: > kfree(cksum.data); > crypto_free_shash(tfm); >=20 > base-commit: 186f3edfdd41f2ae87fc40a9ccba52a3bf930994 Reviewed-by: Jeff Layton