Don't use memcpy when grabbing single bytes from the buffer

FreeRADIUS · Nov 10, 2024 · 0f4c7de · 0f4c7de
1 parent a60a9c9
commit 0f4c7de
Showing 1 changed file with 14 additions and 2 deletions.
diff --git a/src/lib/util/dbuff.h b/src/lib/util/dbuff.h
@@ -1770,6 +1770,18 @@ FR_DBUFF_OUT_DEF(uint64)
 FR_DBUFF_OUT_DEF(int16)
 FR_DBUFF_OUT_DEF(int32)
 FR_DBUFF_OUT_DEF(int64)
+
+#define FR_DBUFF_OUT_DEF_NO_SWAP(_type) \
+static inline ssize_t _fr_dbuff_out_##_type(_type##_t *out, uint8_t **pos_p, fr_dbuff_t *in) \
+{ \
+	fr_assert(out); \
+	FR_DBUFF_EXTEND_LOWAT_OR_RETURN(in, sizeof(_type##_t)); \
+	*out = **pos_p; \
+	return _fr_dbuff_set(pos_p, in, (*pos_p) + sizeof(_type##_t)); \
+}
+
+FR_DBUFF_OUT_DEF_NO_SWAP(uint8)
+FR_DBUFF_OUT_DEF_NO_SWAP(int8)
 /** @endcond */
 
 /** Copy data from a dbuff or marker to a fixed sized C type
@@ -1786,11 +1798,11 @@ FR_DBUFF_OUT_DEF(int64)
  */
 #define fr_dbuff_out(_out, _dbuff_or_marker) \
 	_Generic((_out), \
-		uint8_t *	: _fr_dbuff_out_memcpy((uint8_t *)(_out), _fr_dbuff_current_ptr(_dbuff_or_marker), fr_dbuff_ptr(_dbuff_or_marker), 1), \
+		uint8_t *	: _fr_dbuff_out_uint8((uint8_t *)(_out), _fr_dbuff_current_ptr(_dbuff_or_marker), fr_dbuff_ptr(_dbuff_or_marker), 1), \
 		uint16_t *	: _fr_dbuff_out_uint16((uint16_t *)(_out), _fr_dbuff_current_ptr(_dbuff_or_marker), fr_dbuff_ptr(_dbuff_or_marker)), \
 		uint32_t *	: _fr_dbuff_out_uint32((uint32_t *)(_out), _fr_dbuff_current_ptr(_dbuff_or_marker), fr_dbuff_ptr(_dbuff_or_marker)), \
 		uint64_t *	: _fr_dbuff_out_uint64((uint64_t *)(_out), _fr_dbuff_current_ptr(_dbuff_or_marker), fr_dbuff_ptr(_dbuff_or_marker)), \
-		int8_t *	: _fr_dbuff_out_memcpy((uint8_t *)(_out), _fr_dbuff_current_ptr(_dbuff_or_marker), fr_dbuff_ptr(_dbuff_or_marker), 1), \
+		int8_t *	: _fr_dbuff_out_int8((uint8_t *)(_out), _fr_dbuff_current_ptr(_dbuff_or_marker), fr_dbuff_ptr(_dbuff_or_marker), 1), \
 		int16_t *	: _fr_dbuff_out_int16((int16_t *)(_out), _fr_dbuff_current_ptr(_dbuff_or_marker), fr_dbuff_ptr(_dbuff_or_marker)), \
 		int32_t *	: _fr_dbuff_out_int32((int32_t *)(_out), _fr_dbuff_current_ptr(_dbuff_or_marker), fr_dbuff_ptr(_dbuff_or_marker)), \
 		int64_t *	: _fr_dbuff_out_int64((int64_t *)(_out), _fr_dbuff_current_ptr(_dbuff_or_marker), fr_dbuff_ptr(_dbuff_or_marker)), \