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swtpm_cuse: Implement support for --flags startup-xyz options

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Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
This commit is contained in:
Stefan Berger 2020-10-12 18:09:27 -04:00 committed by Stefan Berger
parent 7eb2c29187
commit 6559a90269
1 changed files with 35 additions and 5 deletions
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40
src/swtpm/cuse_tpm.c
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@ -221,9 +221,10 @@ static const char *usage =
" instead;\n" " instead;\n"
" mode allows a user to set the file mode bits of the state\n" " mode allows a user to set the file mode bits of the state\n"
" files; the default mode is 0640;\n" " files; the default mode is 0640;\n"
"--flags [not-need-init]\n" "--flags [not-need-init][,startup-clear|startup-state|startup-deactivated|startup-none]\n"
" : not-need-init: commands can be sent without needing to\n" " : not-need-init: commands can be sent without needing to\n"
" send an INIT via control channel;\n" " send an INIT via control channel;\n"
" startup-...: send Startup command with this type;\n"
"-r|--runas <user> : after creating the CUSE device, change to the given\n" "-r|--runas <user> : after creating the CUSE device, change to the given\n"
" user\n" " user\n"
"--tpm2 : choose TPM2 functionality\n" "--tpm2 : choose TPM2 functionality\n"
@ -490,6 +491,35 @@ static void ptm_write_fatal_error_response(TPMLIB_TPMVersion l_tpmversion)
l_tpmversion); l_tpmversion);
} }
/*
* ptm_send_startup: Send a TPM/TPM2_Startup
*/
static int ptm_send_startup(uint16_t startupType, TPMLIB_TPMVersion l_tpmversion)
{
uint32_t command_length;
unsigned char command[sizeof(struct tpm_startup)];
uint32_t max_command_length = sizeof(command);
int ret = 0;
TPM_RESULT rc = TPM_SUCCESS;
command_length = tpmlib_create_startup_cmd(
startupType,
tpmversion,
command, max_command_length);
if (command_length > 0)
rc = TPMLIB_Process(&ptm_response, &ptm_res_len, &ptm_res_tot,
(unsigned char *)command, command_length);
if (rc || command_length == 0) {
if (rc) {
logprintf(STDERR_FILENO, "Could not send Startup: 0x%x\n", rc);
ret = -1;
}
}
return ret;
}
/************************************ read() support ***************************/ /************************************ read() support ***************************/
/* /*
@ -1640,10 +1670,10 @@ int swtpm_cuse_main(int argc, char **argv, const char *prgname, const char *ifac
} }
if (param.startupType != _TPM_ST_NONE) { if (param.startupType != _TPM_ST_NONE) {
logprintf(STDERR_FILENO, if (ptm_send_startup(param.startupType, tpmversion) < 0) {
"--flags with startup types are not supported\n"); ret = -1;
ret = -1; goto exit;
goto exit; }
} }
#if GLIB_MINOR_VERSION >= 32 #if GLIB_MINOR_VERSION >= 32