From patchwork Mon Apr 29 20:27:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Bottomley X-Patchwork-Id: 13647655 Received: from bedivere.hansenpartnership.com (bedivere.hansenpartnership.com [96.44.175.130]) (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 66B7413AA5D; Mon, 29 Apr 2024 20:28:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=96.44.175.130 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714422518; cv=none; b=Ye9m9mxE3gSo82ou5JZwlGsQfz30xrd2W3ZqanWj/7v4LgYjI1Vq291MgsQQ/+IqESeyiye9+G9paPDv8Uw/+jvNJV6nKoKbEmwrSBr4hByLnla/pZYP37bPNzXGkHHHbs8zJ/iufC21qhMd0o1dY9i4tIKH1nJzBI/URpheILI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714422518; c=relaxed/simple; bh=Wyr9ED2k1aUHQpzYMoWHKIOFQOSaFOeR+LbNUxV2M34=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=PXUQaY2XjlFnhxfX9qxZG+3lt+6qQb/eRjiHw0zmrh5LIb86vl5/ZEdyvsxxRJtqG4HP5e5FCU16l5f0LupDRx6X6PJXG+StT//sJ/CjtghoQshRcYBKsh7/Up5atln9KjjYhU81S4RkLoAp1NHG+c/E4MKoWixnQO+dN7OBdaA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=HansenPartnership.com; spf=pass smtp.mailfrom=HansenPartnership.com; dkim=pass (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b=pPL41kRr; arc=none smtp.client-ip=96.44.175.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=HansenPartnership.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=HansenPartnership.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b="pPL41kRr" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=hansenpartnership.com; s=20151216; t=1714422516; bh=Wyr9ED2k1aUHQpzYMoWHKIOFQOSaFOeR+LbNUxV2M34=; h=From:To:Subject:Date:Message-Id:In-Reply-To:References:From; b=pPL41kRrTjK68lUz4vYG+a7nqwuamXRFFya4XyyAXwYi143gr7QpFNBpHi8Rg5ScX dSQsbXC4K/x3Zzqxcyo4urfZbGBrva9oIIUmxHF0sffHKa/ywT7DdkhOefhhjkA8nH sLbD2VZ1kSi1RdNZxJZOCuNaEyX6oRBK88M3gCkg= Received: from localhost (localhost [127.0.0.1]) by bedivere.hansenpartnership.com (Postfix) with ESMTP id C80A71281D87; Mon, 29 Apr 2024 16:28:36 -0400 (EDT) Received: from bedivere.hansenpartnership.com ([127.0.0.1]) by localhost (bedivere.hansenpartnership.com [127.0.0.1]) (amavis, port 10024) with ESMTP id 5ToJYGgs_Si0; Mon, 29 Apr 2024 16:28:36 -0400 (EDT) Received: from lingrow.int.hansenpartnership.com (unknown [153.66.160.227]) by bedivere.hansenpartnership.com (Postfix) with ESMTP id 33D1612819F3; Mon, 29 Apr 2024 16:28:35 -0400 (EDT) From: James Bottomley To: linux-integrity@vger.kernel.org Cc: Jarkko Sakkinen , keyrings@vger.kernel.org, Ard Biesheuvel Subject: [PATCH v8 02/22] tpm: Remove tpm_send() Date: Mon, 29 Apr 2024 16:27:51 -0400 Message-Id: <20240429202811.13643-3-James.Bottomley@HansenPartnership.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240429202811.13643-1-James.Bottomley@HansenPartnership.com> References: <20240429202811.13643-1-James.Bottomley@HansenPartnership.com> Precedence: bulk X-Mailing-List: linux-integrity@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Jarkko Sakkinen Open code the last remaining call site for tpm_send(). Signed-off-by: Jarkko Sakkinen Signed-off-by: James Bottomley --- drivers/char/tpm/tpm-interface.c | 25 ----------------------- include/linux/tpm.h | 5 ----- security/keys/trusted-keys/trusted_tpm1.c | 14 +++++++++++-- 3 files changed, 12 insertions(+), 32 deletions(-) diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index 757336324c90..f940045a014e 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -342,31 +342,6 @@ int tpm_pcr_extend(struct tpm_chip *chip, u32 pcr_idx, } EXPORT_SYMBOL_GPL(tpm_pcr_extend); -/** - * tpm_send - send a TPM command - * @chip: a &struct tpm_chip instance, %NULL for the default chip - * @cmd: a TPM command buffer - * @buflen: the length of the TPM command buffer - * - * Return: same as with tpm_transmit_cmd() - */ -int tpm_send(struct tpm_chip *chip, void *cmd, size_t buflen) -{ - struct tpm_buf buf; - int rc; - - chip = tpm_find_get_ops(chip); - if (!chip) - return -ENODEV; - - buf.data = cmd; - rc = tpm_transmit_cmd(chip, &buf, 0, "attempting to a send a command"); - - tpm_put_ops(chip); - return rc; -} -EXPORT_SYMBOL_GPL(tpm_send); - int tpm_auto_startup(struct tpm_chip *chip) { int rc; diff --git a/include/linux/tpm.h b/include/linux/tpm.h index 6588ca87cf93..d9d645e9c52c 100644 --- a/include/linux/tpm.h +++ b/include/linux/tpm.h @@ -422,7 +422,6 @@ extern int tpm_pcr_read(struct tpm_chip *chip, u32 pcr_idx, struct tpm_digest *digest); extern int tpm_pcr_extend(struct tpm_chip *chip, u32 pcr_idx, struct tpm_digest *digests); -extern int tpm_send(struct tpm_chip *chip, void *cmd, size_t buflen); extern int tpm_get_random(struct tpm_chip *chip, u8 *data, size_t max); extern struct tpm_chip *tpm_default_chip(void); void tpm2_flush_context(struct tpm_chip *chip, u32 handle); @@ -443,10 +442,6 @@ static inline int tpm_pcr_extend(struct tpm_chip *chip, u32 pcr_idx, return -ENODEV; } -static inline int tpm_send(struct tpm_chip *chip, void *cmd, size_t buflen) -{ - return -ENODEV; -} static inline int tpm_get_random(struct tpm_chip *chip, u8 *data, size_t max) { return -ENODEV; diff --git a/security/keys/trusted-keys/trusted_tpm1.c b/security/keys/trusted-keys/trusted_tpm1.c index aa108bea6739..37bce84eef99 100644 --- a/security/keys/trusted-keys/trusted_tpm1.c +++ b/security/keys/trusted-keys/trusted_tpm1.c @@ -356,17 +356,27 @@ static int TSS_checkhmac2(unsigned char *buffer, */ int trusted_tpm_send(unsigned char *cmd, size_t buflen) { + struct tpm_buf buf; int rc; if (!chip) return -ENODEV; + rc = tpm_try_get_ops(chip); + if (rc) + return rc; + + buf.flags = 0; + buf.data = cmd; dump_tpm_buf(cmd); - rc = tpm_send(chip, cmd, buflen); + rc = tpm_transmit_cmd(chip, &buf, 4, "sending data"); dump_tpm_buf(cmd); + if (rc > 0) - /* Can't return positive return codes values to keyctl */ + /* TPM error */ rc = -EPERM; + + tpm_put_ops(chip); return rc; } EXPORT_SYMBOL_GPL(trusted_tpm_send);