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libtpms
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src/tpm2/StateMarshal.c
64 строки
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Stefan Berger
Sync: Move many files to BSD-2-Clause license
13 фев 2026, 17:59
13 фев 2026, 17:59
65b3939
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// SPDX-License-Identifier: BSD-2-Clause // (c) Copyright IBM Corporation 2017,2018. #include <stdlib.h> #include "config.h" #include "StateMarshal.h" #include "Volatile.h" #define TPM_HAVE_TPM2_DECLARATIONS #include "tpm_library_intern.h" #include "tpm_nvfilename.h" #include "tpm_error.h" #include "tpm_memory.h" UINT16 VolatileSave(BYTE **buffer, INT32 *size) { return VolatileState_Save(buffer, size); } TPM_RC VolatileLoad(BOOL *restored) { TPM_RC rc = TPM_RC_SUCCESS; #ifdef TPM_LIBTPMS_CALLBACKS unsigned char *data = NULL; uint32_t length = 0; struct libtpms_callbacks *cbs = TPMLIB_GetCallbacks(); TPM_RESULT ret = TPM_SUCCESS; bool is_empty_state; *restored = FALSE; /* try to get state blob set via TPMLIB_SetState() */ GetCachedState(TPMLIB_STATE_VOLATILE, &data, &length, &is_empty_state); if (is_empty_state) return rc; if (!data && cbs->tpm_nvram_loaddata) { uint32_t tpm_number = 0; const char *name = TPM_VOLATILESTATE_NAME; ret = cbs->tpm_nvram_loaddata(&data, &length, tpm_number, name); } if (data && ret == TPM_SUCCESS) { unsigned char *p = data; rc = VolatileState_Load(&data, (INT32 *)&length); /* * if this failed, VolatileState_Load will have started * failure mode. */ free(p); *restored = (rc == 0); } #endif /* TPM_LIBTPMS_CALLBACKS */ return rc; }