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From: Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Cc: open list <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH 2/6] tpm: export tpm2_flush_context_cmd
Date: Wed,  8 Feb 2017 13:07:04 +0200	[thread overview]
Message-ID: <20170208110713.14070-3-jarkko.sakkinen@linux.intel.com> (raw)
In-Reply-To: <20170208110713.14070-1-jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 drivers/char/tpm/tpm.h      |  2 ++
 drivers/char/tpm/tpm2-cmd.c | 62 +++++++++++++++++++++------------------------
 2 files changed, 31 insertions(+), 33 deletions(-)

diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 4f21e42..ba483f1 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -554,6 +554,8 @@ int tpm2_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf);
 int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, u32 count,
 		    struct tpm2_digest *digests);
 int tpm2_get_random(struct tpm_chip *chip, u8 *out, size_t max);
+void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
+			    unsigned int flags);
 int tpm2_seal_trusted(struct tpm_chip *chip,
 		      struct trusted_key_payload *payload,
 		      struct trusted_key_options *options);
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index fe57fce..86565a9 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -419,6 +419,35 @@ static const struct tpm_input_header tpm2_get_tpm_pt_header = {
 };
 
 /**
+ * tpm2_flush_context_cmd() - execute a TPM2_FlushContext command
+ * @chip: TPM chip to use
+ * @payload: the key data in clear and encrypted form
+ * @options: authentication values and other options
+ *
+ * Return: same as with tpm_transmit_cmd
+ */
+void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
+			    unsigned int flags)
+{
+	struct tpm_buf buf;
+	int rc;
+
+	rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_FLUSH_CONTEXT);
+	if (rc) {
+		dev_warn(&chip->dev, "0x%08x was not flushed, out of memory\n",
+			 handle);
+		return;
+	}
+
+	tpm_buf_append_u32(&buf, handle);
+
+	(void) tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, 0, flags,
+				"flushing context");
+
+	tpm_buf_destroy(&buf);
+}
+
+/**
  * tpm_buf_append_auth() - append TPMS_AUTH_COMMAND to the buffer.
  *
  * @buf: an allocated tpm_buf instance
@@ -628,39 +657,6 @@ static int tpm2_load_cmd(struct tpm_chip *chip,
 }
 
 /**
- * tpm2_flush_context_cmd() - execute a TPM2_FlushContext command
- *
- * @chip: TPM chip to use
- * @handle: the key data in clear and encrypted form
- * @flags: tpm transmit flags
- *
- * Return: Same as with tpm_transmit_cmd.
- */
-static void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
-				   unsigned int flags)
-{
-	struct tpm_buf buf;
-	int rc;
-
-	rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_FLUSH_CONTEXT);
-	if (rc) {
-		dev_warn(&chip->dev, "0x%08x was not flushed, out of memory\n",
-			 handle);
-		return;
-	}
-
-	tpm_buf_append_u32(&buf, handle);
-
-	rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, 0, flags,
-			      "flushing context");
-	if (rc)
-		dev_warn(&chip->dev, "0x%08x was not flushed, rc=%d\n", handle,
-			 rc);
-
-	tpm_buf_destroy(&buf);
-}
-
-/**
  * tpm2_unseal_cmd() - execute a TPM2_Unload command
  *
  * @chip: TPM chip to use
-- 
2.9.3


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  parent reply	other threads:[~2017-02-08 11:07 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-08 11:07 [PATCH 0/6] in-kernel resource manager Jarkko Sakkinen
     [not found] ` <20170208110713.14070-1-jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-02-08 11:07   ` [PATCH 1/6] tpm: validate TPM 2.0 commands Jarkko Sakkinen
2017-02-08 11:07   ` Jarkko Sakkinen [this message]
     [not found]     ` <20170208110713.14070-3-jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-02-08 17:58       ` [PATCH 2/6] tpm: export tpm2_flush_context_cmd Jason Gunthorpe
     [not found]         ` <20170208175830.GA31571-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-02-10  7:42           ` Jarkko Sakkinen
2017-02-08 11:07   ` [PATCH 3/6] tpm: infrastructure for TPM spaces Jarkko Sakkinen
     [not found]     ` <20170208110713.14070-4-jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-03-23 15:40       ` [PATCH linux-next] tmp2: fix an off by one bug Vincent Stehlé
     [not found]         ` <20170323154029.27816-1-vincent.stehle-QFKgK+z4sOrR7s880joybQ@public.gmane.org>
2017-03-23 18:15           ` Jarkko Sakkinen
2017-02-08 11:07   ` [PATCH 4/6] tpm: split out tpm-dev.c into tpm-dev.c and tpm-common-dev.c Jarkko Sakkinen
2017-02-08 11:07   ` [PATCH 5/6] tpm: expose spaces via a device link /dev/tpms<n> Jarkko Sakkinen
2017-02-08 11:07   ` [PATCH 6/6] tpm2: add session handle context saving and restoring to the space code Jarkko Sakkinen
     [not found]     ` <20170208110713.14070-7-jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-02-10  8:52       ` Jarkko Sakkinen
     [not found]         ` <20170210085256.eqhnrmdug2fcz4ql-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-02-10 16:11           ` James Bottomley
2017-02-10 19:07             ` [PATCH 6/6] tpm2: add session handle context saving and restoring to the space code' Jarkko Sakkinen
2017-02-10 12:32       ` [PATCH 6/6] tpm2: add session handle context saving and restoring to the space code Jarkko Sakkinen
     [not found]         ` <20170210123249.nrppoez2kdr2q4nw-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-02-10 16:17           ` James Bottomley
     [not found]             ` <1486743431.2502.6.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-02-10 19:10               ` Jarkko Sakkinen
     [not found]                 ` <20170210191004.yv5hgnd3h5scj5zt-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-02-10 19:12                   ` James Bottomley
2017-02-10 22:48                     ` [tpmdd-devel] " Jarkko Sakkinen
2017-02-10  8:53   ` [PATCH 0/6] in-kernel resource manager Jarkko Sakkinen

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