Add internal kernel tpm_send() command used to seal/unseal keys.
Signed-off-by: David Safford <safford@xxxxxxxxxxxxxx>
Reviewd-by: Mimi Zohar <zohar@xxxxxxxxxxxxxx>
---
drivers/char/tpm/tpm.c | 17 +++++++++++++++++
include/linux/tpm.h | 3 +++
2 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 05ad4a1..37c16a8 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -770,6 +770,23 @@ 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, char *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, (struct tpm_cmd_t *)cmd, buflen,
+ "attempting tpm_cmd");
+
+ module_put(chip->dev->driver->owner);
+ 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..a0ecaa9 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, char *cmd, int buflen);
#else
static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) {
return -ENODEV;
@@ -38,5 +39,7 @@ 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, char *cmd, int buflen) {
+ return -ENODEV;
#endif
#endif
--
1.7.2.2
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