From: Mimi Zohar Subject: [PATCH v1.4 3/5] key: add tpm_send command Date: Thu, 18 Nov 2010 17:42:44 -0500 Message-ID: <1290120166-3132-4-git-send-email-zohar@linux.vnet.ibm.com> References: <1290120166-3132-1-git-send-email-zohar@linux.vnet.ibm.com> Cc: Mimi Zohar , linux-security-module@vger.kernel.org, keyrings@linux-nfs.org, linux-crypto@vger.kernel.org, David Howells , Jason Gunthorpe , James Morris , David Safford , Rajiv Andrade , Mimi Zohar To: linux-kernel@vger.kernel.org Return-path: In-Reply-To: <1290120166-3132-1-git-send-email-zohar@linux.vnet.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org Add internal kernel tpm_send() command used to seal/unseal keys. Changelog: - replaced module_put in tpm_send() with new tpm_chip_put() wrapper (suggested by David Howells) - Make tpm_send() cmd argument a 'void *' (suggested by David Howells) Signed-off-by: David Safford Signed-off-by: Mimi Zohar --- drivers/char/tpm/tpm.c | 16 ++++++++++++++++ include/linux/tpm.h | 4 ++++ 2 files changed, 20 insertions(+), 0 deletions(-) diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index 26c09f3..b737cf3 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -780,6 +780,22 @@ int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash) } EXPORT_SYMBOL_GPL(tpm_pcr_extend); +int tpm_send(u32 chip_num, void *cmd, int buflen) +{ + struct tpm_chip *chip; + int rc; + + chip = tpm_chip_find_get(chip_num); + if (chip == NULL) + return -ENODEV; + + rc = transmit_cmd(chip, cmd, buflen, "attempting tpm_cmd"); + + tpm_chip_put(chip); + return rc; +} +EXPORT_SYMBOL_GPL(tpm_send); + ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr, char *buf) { diff --git a/include/linux/tpm.h b/include/linux/tpm.h index ac5d1c1..a25ab8f 100644 --- a/include/linux/tpm.h +++ b/include/linux/tpm.h @@ -31,6 +31,7 @@ extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf); extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash); +extern int tpm_send(u32 chip_num, void *cmd, int buflen); #else static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) { return -ENODEV; @@ -38,5 +39,8 @@ static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) { static inline int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash) { return -ENODEV; } +static inline int tpm_send(u32 chip_num, void *cmd, int buflen) { + return -ENODEV; +} #endif #endif -- 1.7.2.2