added isc_buffer_putmem()

lib/isc/buffer.c

@@ -384,6 +384,19 @@ isc_buffer_putuint32(isc_buffer_t *b, isc_uint32_t val)
 	cp[3] = (unsigned char)(val & 0x000000ff);
 }
 
+void
+isc_buffer_putmem(isc_buffer_t *b, unsigned char *base, unsigned int length)
+{
+	unsigned char *cp;
+
+	REQUIRE(ISC_BUFFER_VALID(b));
+	REQUIRE(b->used + length <= b->length);
+
+	cp = b->base + b->used;
+	memcpy(cp, base, length);
+	b->used += length;
+}	
+
 isc_result_t
 isc_buffer_copyregion(isc_buffer_t *b, isc_region_t *r) {
 	unsigned char *base;

lib/isc/include/isc/buffer.h

@@ -539,6 +539,23 @@ isc_buffer_putuint32(isc_buffer_t *b, isc_uint32_t val);
  *	The used pointer in 'b' is advanced by 4.
  */
 
+void
+isc_buffer_putmem(isc_buffer_t *b, unsigned char *base, unsigned int length);
+/*
+ * Copy 'length' bytes of memory at 'base' into 'b'.
+ *
+ * Requires:
+ *	'b' is a valid buffer.
+ *
+ *	'base' points to 'length' bytes of valid memory.
+ *
+ * Returns:
+ *
+ *	ISC_R_SUCCESS
+ *	ISC_R_NOSPACE			The available region of 'b' is not
+ *					big enough.
+ */
+
 isc_result_t
 isc_buffer_copyregion(isc_buffer_t *b, isc_region_t *r);
 /*
@@ -556,6 +573,7 @@ isc_buffer_copyregion(isc_buffer_t *b, isc_region_t *r);
  *					big enough.
  */
 
+
 ISC_LANG_ENDDECLS
 
 #endif /* ISC_BUFFER_H */