diff options
| author | James Bottomley <James.Bottomley@HansenPartnership.com> | 2024-04-29 16:27:59 -0400 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko@kernel.org> | 2024-05-09 22:30:51 +0300 |
| commit | 11189d6828ba4aa77916fdf4fcaebc304b349b51 (patch) | |
| tree | e1e357848f976075125b9b7eaee3beea36e1adaa /include/linux | |
| parent | f135440447af5156de91272ee52ccedcf0796e94 (diff) | |
tpm: add buffer function to point to returned parameters
Replace all instances of &buf.data[TPM_HEADER_SIZE] with a new
function tpm_buf_parameters() because encryption sessions change
where the return parameters are located in the buffer since if a
return session is present they're 4 bytes beyond the header with those
4 bytes giving the parameter length. If there is no return session,
then they're in the usual place immediately after the header.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/tpm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/tpm.h b/include/linux/tpm.h index e8172f81c562..6be263509e81 100644 --- a/include/linux/tpm.h +++ b/include/linux/tpm.h @@ -344,6 +344,8 @@ u8 tpm_buf_read_u8(struct tpm_buf *buf, off_t *offset); u16 tpm_buf_read_u16(struct tpm_buf *buf, off_t *offset); u32 tpm_buf_read_u32(struct tpm_buf *buf, off_t *offset); +u8 *tpm_buf_parameters(struct tpm_buf *buf); + /* * Check if TPM device is in the firmware upgrade mode. */ |