[Qemu-devel] [PATCH v2 4/7] tpm: Implement tpm_sized_buffer_reset

[Stefan Berger]

Signed-off-by: Stefan Berger <stef...@linux.vnet.ibm.com>
---
 hw/tpm/tpm_tis.c  | 5 -----
 hw/tpm/tpm_util.c | 7 +++++++
 hw/tpm/tpm_util.h | 7 +++++++
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c
index 90dca4e..60887c3 100644
--- a/hw/tpm/tpm_tis.c
+++ b/hw/tpm/tpm_tis.c
@@ -48,11 +48,6 @@ typedef enum {
     TPM_TIS_STATE_RECEPTION,
 } TPMTISState;
 
-typedef struct TPMSizedBuffer {
-    uint32_t size;
-    uint8_t  *buffer;
-} TPMSizedBuffer;
-
 /* locality data  -- all fields are persisted */
 typedef struct TPMLocality {
     TPMTISState state;
diff --git a/hw/tpm/tpm_util.c b/hw/tpm/tpm_util.c
index daf1faa..6132a14 100644
--- a/hw/tpm/tpm_util.c
+++ b/hw/tpm/tpm_util.c
@@ -151,3 +151,10 @@ int tpm_util_test_tpmdev(int tpm_fd, TPMVersion 
*tpm_version)
 
     return 1;
 }
+
+void tpm_sized_buffer_reset(TPMSizedBuffer *tsb)
+{
+    g_free(tsb->buffer);
+    tsb->buffer = NULL;
+    tsb->size = 0;
+}
diff --git a/hw/tpm/tpm_util.h b/hw/tpm/tpm_util.h
index aca10c9..4c0d596 100644
--- a/hw/tpm/tpm_util.h
+++ b/hw/tpm/tpm_util.h
@@ -36,4 +36,11 @@ static inline uint32_t tpm_cmd_get_size(const void *b)
     return be32_to_cpu(*(const uint32_t *)(b + 2));
 }
 
+typedef struct TPMSizedBuffer {
+    uint32_t size;
+    uint8_t  *buffer;
+} TPMSizedBuffer;
+
+void tpm_sized_buffer_reset(TPMSizedBuffer *tsb);
+
 #endif /* TPM_TPM_UTIL_H */
-- 
2.5.5