Eric Blake wrote:
> struct msghdr msg;
> -# if HAVE_UNIXSOCKET_SCM_RIGHTS_BSD44_WAY
> +# ifdef CMSG_FIRSTHDR
> struct cmsghdr *cmsg;
So that we don't forget which code applies to which platforms, let me add
some comments:
2011-04-30 Bruno Haible <br...@clisp.org>
passfd: Add comments.
* lib/passfd.c: Add comments about platforms.
--- lib/passfd.c.orig Sat Apr 30 14:04:08 2011
+++ lib/passfd.c Sat Apr 30 14:03:10 2011
@@ -30,6 +30,12 @@
#include "cloexec.h"
+/* The code that uses CMSG_FIRSTHDR is enabled on
+ Linux, MacOS X, FreeBSD, OpenBSD, NetBSD, AIX, OSF/1, Cygwin.
+ The code that uses HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS is enabled on
+ HP-UX, IRIX, Solaris. */
+
+/* MSG_CMSG_CLOEXEC is defined only on Linux, as of 2011. */
#ifndef MSG_CMSG_CLOEXEC
# define MSG_CMSG_CLOEXEC 0
#endif
--
In memoriam Casey Jones <http://en.wikipedia.org/wiki/Casey_Jones>
