From: Stefan Berger <stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Cc: linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH v6 1/3] tpm: Introduce flag TPM_TRANSMIT_RAW
Date: Wed, 24 May 2017 17:39:39 -0400 [thread overview]
Message-ID: <1495661981-27249-2-git-send-email-stefanb@linux.vnet.ibm.com> (raw)
In-Reply-To: <1495661981-27249-1-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
Introduce the flag TPM_TRANSMIT_RAW that allows us to transmit
a command without recursing into the requesting of locality.
Signed-off-by: Stefan Berger <stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
drivers/char/tpm/tpm-interface.c | 3 ++-
drivers/char/tpm/tpm.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 4ed08ab..2eacda2 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -416,7 +416,8 @@ ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space,
/* Store the decision as chip->locality will be changed. */
need_locality = chip->locality == -1;
- if (need_locality && chip->ops->request_locality) {
+ if (!(flags & TPM_TRANSMIT_RAW) &&
+ need_locality && chip->ops->request_locality) {
rc = chip->ops->request_locality(chip, 0);
if (rc < 0)
goto out_no_locality;
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index e81d8c7..25d9858 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -525,6 +525,7 @@ extern struct idr dev_nums_idr;
enum tpm_transmit_flags {
TPM_TRANSMIT_UNLOCKED = BIT(0),
+ TPM_TRANSMIT_RAW = BIT(1),
};
ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space,
--
2.4.3
------------------------------------------------------------------------------
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next prev parent reply other threads:[~2017-05-24 21:39 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-24 21:39 [PATCH v6 0/3] Extend the vTPM proxy driver to pass locality Stefan Berger
[not found] ` <1495661981-27249-1-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-05-24 21:39 ` Stefan Berger [this message]
2017-05-24 22:18 ` [PATCH v6 1/3] tpm: Introduce flag TPM_TRANSMIT_RAW Jarkko Sakkinen
2017-05-24 22:59 ` Stefan Berger
2017-05-24 21:39 ` [PATCH v6 2/3] tpm: vtpm_proxy: Implement request_locality function Stefan Berger
2017-05-24 22:21 ` Jarkko Sakkinen
2017-05-24 23:03 ` Stefan Berger
2017-05-25 0:09 ` Jarkko Sakkinen
2017-06-02 0:34 ` Stefan Berger
2017-06-04 15:43 ` Jarkko Sakkinen
[not found] ` <20170604154332.blhrcj43xgcswxvu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-06-04 16:27 ` Jarkko Sakkinen
2017-06-04 20:09 ` Stefan Berger
2017-05-24 21:39 ` [PATCH v6 3/3] tpm: vtpm_proxy: Prevent userspace from sending driver command Stefan Berger
2017-05-24 22:22 ` Jarkko Sakkinen
[not found] ` <20170524222211.bweuzimsy2vm2lym-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-05-25 0:10 ` Jarkko Sakkinen
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