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Diffstat (limited to 'src/tpm2/RunCommand.c')
| -rw-r--r-- | src/tpm2/RunCommand.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/tpm2/RunCommand.c b/src/tpm2/RunCommand.c new file mode 100644 index 0000000..06465b7 --- /dev/null +++ b/src/tpm2/RunCommand.c @@ -0,0 +1,105 @@ +/********************************************************************************/ +/* */ +/* Platform specific entry and fail processing */ +/* Written by Ken Goldman */ +/* IBM Thomas J. Watson Research Center */ +/* $Id: RunCommand.c 1476 2019-06-10 19:32:03Z kgoldman $ */ +/* */ +/* Licenses and Notices */ +/* */ +/* 1. Copyright Licenses: */ +/* */ +/* - Trusted Computing Group (TCG) grants to the user of the source code in */ +/* this specification (the "Source Code") a worldwide, irrevocable, */ +/* nonexclusive, royalty free, copyright license to reproduce, create */ +/* derivative works, distribute, display and perform the Source Code and */ +/* derivative works thereof, and to grant others the rights granted herein. */ +/* */ +/* - The TCG grants to the user of the other parts of the specification */ +/* (other than the Source Code) the rights to reproduce, distribute, */ +/* display, and perform the specification solely for the purpose of */ +/* developing products based on such documents. */ +/* */ +/* 2. Source Code Distribution Conditions: */ +/* */ +/* - Redistributions of Source Code must retain the above copyright licenses, */ +/* this list of conditions and the following disclaimers. */ +/* */ +/* - Redistributions in binary form must reproduce the above copyright */ +/* licenses, this list of conditions and the following disclaimers in the */ +/* documentation and/or other materials provided with the distribution. */ +/* */ +/* 3. Disclaimers: */ +/* */ +/* - THE COPYRIGHT LICENSES SET FORTH ABOVE DO NOT REPRESENT ANY FORM OF */ +/* LICENSE OR WAIVER, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, WITH */ +/* RESPECT TO PATENT RIGHTS HELD BY TCG MEMBERS (OR OTHER THIRD PARTIES) */ +/* THAT MAY BE NECESSARY TO IMPLEMENT THIS SPECIFICATION OR OTHERWISE. */ +/* Contact TCG Administration (admin@trustedcomputinggroup.org) for */ +/* information on specification licensing rights available through TCG */ +/* membership agreements. */ +/* */ +/* - THIS SPECIFICATION IS PROVIDED "AS IS" WITH NO EXPRESS OR IMPLIED */ +/* WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR */ +/* FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, COMPLETENESS, OR */ +/* NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS, OR ANY WARRANTY */ +/* OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. */ +/* */ +/* - Without limitation, TCG and its members and licensors disclaim all */ +/* liability, including liability for infringement of any proprietary */ +/* rights, relating to use of information in this specification and to the */ +/* implementation of this specification, and TCG disclaims all liability for */ +/* cost of procurement of substitute goods or services, lost profits, loss */ +/* of use, loss of data or any incidental, consequential, direct, indirect, */ +/* or special damages, whether under contract, tort, warranty or otherwise, */ +/* arising in any way out of use or reliance upon this specification or any */ +/* information herein. */ +/* */ +/* (c) Copyright IBM Corp. and others, 2016 - 2019 */ +/* */ +/********************************************************************************/ + +/* C.11 RunCommand.c */ +/* C.11.1. Introduction */ +/* This module provides the platform specific entry and fail processing. The _plat__RunCommand() + function is used to call to ExecuteCommand() in the TPM code. This function does whatever + processing is necessary to set up the platform in anticipation of the call to the TPM including + setup for error processing. */ +/* The _plat__Fail() function is called when there is a failure in the TPM. The TPM code will have + set the flag to indicate that the TPM is in failure mode. This call will then recursively call + ExecuteCommand() in order to build the failure mode response. When ExecuteCommand() returns to + _plat__Fail(), the platform will do some platform specif operation to return to the environment + in which the TPM is executing. For a simulator, setjmp/longjmp is used. For an OS, a system exit + to the OS would be appropriate. */ +/* C.11.2. Includes and locals */ +#include "Platform.h" +#include <setjmp.h> +#include "ExecCommand_fp.h" +jmp_buf s_jumpBuffer; +/* C.11.3. Functions */ +/* C.11.3.1. _plat__RunCommand() */ +/* This version of RunCommand() will set up a jum_buf and call ExecuteCommand(). If the command + executes without failing, it will return and RunCommand() will return. If there is a failure in + the command, then _plat__Fail() is called and it will longjump back to RunCommand() which will + call ExecuteCommand() again. However, this time, the TPM will be in failure mode so + ExecuteCommand() will simply build a failure response and return. */ +LIB_EXPORT void +_plat__RunCommand( + uint32_t requestSize, // IN: command buffer size + unsigned char *request, // IN: command buffer + uint32_t *responseSize, // IN/OUT: response buffer size + unsigned char **response // IN/OUT: response buffer + ) +{ + setjmp(s_jumpBuffer); + ExecuteCommand(requestSize, request, responseSize, response); +} +/* C.11.3.2. _plat__Fail() */ +/* This is the platform depended failure exit for the TPM. */ +LIB_EXPORT NORETURN void +_plat__Fail( + void + ) +{ + longjmp(&s_jumpBuffer[0], 1); +} |