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Ross Philipson
55ba91d4c5
Extract all the functions and definitions for TPM buffer handling and separate them into their own header. Signed-off-by: Ross Philipson <ross.philipson@gmail.com> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Following copyright information was take from the original file
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* <include/linux/tpm.h> where the definitions were moved from:
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*
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* Copyright (C) 2004,2007,2008 IBM Corporation
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*
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* Authors:
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* Leendert van Doorn <leendert@watson.ibm.com>
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* Dave Safford <safford@watson.ibm.com>
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* Reiner Sailer <sailer@watson.ibm.com>
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* Kylene Hall <kjhall@us.ibm.com>
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* Debora Velarde <dvelarde@us.ibm.com>
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*
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* Maintained by: <tpmdd_devel@lists.sourceforge.net>
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*
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* Device driver for TCG/TCPA TPM (trusted platform module).
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* Specifications at www.trustedcomputinggroup.org
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*/
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#ifndef __LINUX_TPM_BUF_H__
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#define __LINUX_TPM_BUF_H__
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#include <linux/types.h>
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#include <linux/bits.h>
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enum tpm_buf_flags {
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/* TPM2B format: */
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TPM_BUF_TPM2B = BIT(0),
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/* The buffer is in invalid and unusable state: */
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TPM_BUF_INVALID = BIT(1),
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};
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/*
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* A buffer for constructing and parsing TPM commands, responses and sized
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* (TPM2B) buffers.
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*/
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struct tpm_buf {
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u8 flags;
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u8 handles;
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u16 length;
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u16 capacity;
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u8 data[];
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};
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void tpm_buf_init(struct tpm_buf *buf, u16 buf_size);
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void tpm_buf_init_sized(struct tpm_buf *buf, u16 buf_size);
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void tpm_buf_reset(struct tpm_buf *buf, u16 tag, u32 ordinal);
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void tpm_buf_reset_sized(struct tpm_buf *buf);
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u16 tpm_buf_length(struct tpm_buf *buf);
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void tpm_buf_append(struct tpm_buf *buf, const u8 *new_data, u16 new_length);
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void tpm_buf_append_u8(struct tpm_buf *buf, const u8 value);
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void tpm_buf_append_u16(struct tpm_buf *buf, const u16 value);
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void tpm_buf_append_u32(struct tpm_buf *buf, const u32 value);
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u8 tpm_buf_read_u8(struct tpm_buf *buf, off_t *offset);
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u16 tpm_buf_read_u16(struct tpm_buf *buf, off_t *offset);
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u32 tpm_buf_read_u32(struct tpm_buf *buf, off_t *offset);
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void tpm_buf_append_handle(struct tpm_buf *buf, u32 handle);
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#endif
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