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tpm: Implement tpm_sized_buffer_reset

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Move the definition of TPMSizedBuffer out of tpm_tis.c into tpm_util.h
and implement tpm_sized_buffer_reset() for the following patches to use.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
This commit is contained in:
Stefan Berger 2017-10-11 10:36:53 -04:00
parent f999d81bc7
commit b86da7dded
3 changed files with 14 additions and 5 deletions
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5
hw/tpm/tpm_tis.c
View File

@ -48,11 +48,6 @@ typedef enum {
TPM_TIS_STATE_RECEPTION, TPM_TIS_STATE_RECEPTION,
} TPMTISState; } TPMTISState;
typedef struct TPMSizedBuffer {
uint32_t size;
uint8_t *buffer;
} TPMSizedBuffer;
/* locality data -- all fields are persisted */ /* locality data -- all fields are persisted */
typedef struct TPMLocality { typedef struct TPMLocality {
TPMTISState state; TPMTISState state;

7
hw/tpm/tpm_util.c
View File

@ -355,3 +355,10 @@ int tpm_util_get_buffer_size(int tpm_fd, TPMVersion tpm_version,
return 0; return 0;
} }
void tpm_sized_buffer_reset(TPMSizedBuffer *tsb)
{
g_free(tsb->buffer);
tsb->buffer = NULL;
tsb->size = 0;
}

7
hw/tpm/tpm_util.h
View File

@ -42,4 +42,11 @@ int tpm_util_get_buffer_size(int tpm_fd, TPMVersion tpm_version,
#define DEFINE_PROP_TPMBE(_n, _s, _f) \ #define DEFINE_PROP_TPMBE(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_tpm, TPMBackend *) DEFINE_PROP(_n, _s, _f, qdev_prop_tpm, TPMBackend *)
typedef struct TPMSizedBuffer {
uint32_t size;
uint8_t *buffer;
} TPMSizedBuffer;
void tpm_sized_buffer_reset(TPMSizedBuffer *tsb);
#endif /* TPM_TPM_UTIL_H */ #endif /* TPM_TPM_UTIL_H */