Add dummy proc_diskio implementation for FreeBSD.

sysdeps/freebsd/Makefile.am

@@ -16,6 +16,7 @@ libgtop_sysdeps_suid_2_0_la_SOURCES	= suid_open.c close.c swap.c \
 				  proclist.c procstate.c procuid.c \
 				  proctime.c procmem.c procsignal.c \
 				  prockernel.c procsegment.c procargs.c \
+				  procdiskio.c \
 				  procmap.c netload.c ppp.c
 
 libgtop_sysdeps_suid_2_0_la_LDFLAGS	= $(LT_VERSION_INFO)

sysdeps/freebsd/glibtop_server.h

@@ -47,6 +47,7 @@ G_BEGIN_DECLS
 #define GLIBTOP_SUID_NETLIST		0
 #define GLIBTOP_SUID_PROC_WD		0
 #define GLIBTOP_SUID_PROC_AFFINITY	0
+#define GLIBTOP_SUID_PROC_DISKIO	(1 << GLIBTOP_SYSDEPS_PROC_DISKIO)
 
 G_END_DECLS
 

sysdeps/freebsd/procdiskio.c

@@ -0,0 +1,43 @@
+/* Copyright (C) 2017 Robert Roth
+   This file is part of LibGTop.
+
+   Contributed by Robert Roth <robert.roth.off@gmail.com>, February 2017.
+
+   LibGTop is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License,
+   or (at your option) any later version.
+
+   LibGTop is distributed in the hope that it will be useful, but WITHOUT
+   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+   for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with LibGTop; see the file COPYING. If not, write to the
+   Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+*/
+
+#include <config.h>
+#include <glibtop.h>
+#include <glibtop/procdiskio.h>
+
+static const unsigned long _glibtop_sysdeps_proc_diskio = 0;
+
+/* Init function. */
+
+void
+_glibtop_init_proc_diskio_p (glibtop *server)
+{
+	server->sysdeps.proc_diskio = _glibtop_sysdeps_proc_diskio;
+}
+
+/* Provides detailed information about a process. */
+
+void
+glibtop_get_proc_diskio_p (glibtop *server, glibtop_proc_diskio *buf,
+			 pid_t pid)
+{
+	memset (buf, 0, sizeof (glibtop_proc_diskio));
+}