Improve the ibuf API by adding these functions:

Functions extending ibuf_add to work with more specific data types
  ibuf_add_buf, ibuf_add_zero, ibuf_add_n8, ibuf_add_n16, ibuf_add_n32,
  ibuf_add_n64
Functions replacing ibuf_seek where data at a specific offset is modified
  ibuf_set, ibuf_set_n8, ibuf_set_n16, ibuf_set_n32, ibuf_set_n64
Functions to check, get and set the filedescriptor stored on the ibuf
  ibuf_fd_avail, ibuf_fd_get, ibuf_fd_set
and ibuf_data() to access the data buffer, to be used together with ibuf_size()

On top of this add an optimized imsg_compose_ibuf() where an ibuf is wrapped
into an imsg in an efficent way.

Finally remove msgbuf_drain since it is not used by anything outside of
the ibuf code. Because of this removal bump the major of libutil.

Remove ibuf_data() in iked since the same function is now provided by libutil.
OK tb@

1 files changed, 1 insertions, 7 deletions

diff --git a/sbin/iked/imsg_util.c b/sbin/iked/imsg_util.c
index cf83b5c9848..eab8eea72bc 100644
--- a/sbin/iked/imsg_util.c
+++ b/sbin/iked/imsg_util.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: imsg_util.c,v 1.18 2023/06/12 09:02:32 claudio Exp $	*/
+/*	$OpenBSD: imsg_util.c,v 1.19 2023/06/19 17:19:50 claudio Exp $	*/
 
 /*
  * Copyright (c) 2010-2013 Reyk Floeter <reyk@openbsd.org>
@@ -84,12 +84,6 @@ ibuf_length(struct ibuf *buf)
 }
 
 void *
-ibuf_data(struct ibuf *buf)
-{
-	return (ibuf_seek(buf, 0, 0));
-}
-
-void *
 ibuf_getdata(struct ibuf *buf, size_t len)
 {
 	void	*data;