Support custom build directories and move includes

One of the neat tricks an autoconf style project is capable of
is allow configurion/building in a directory other than the
source directory.  The major advantage to this is that you can
build the project various different ways while making changes
in a single source tree.

For example, this project is designed to work on various different
Linux distributions each of which work slightly differently.  This
means that changes need to verified on each of those supported
distributions perferably before the change is committed to the
public git repo.

Using nfs and custom build directories makes this much easier.
I now have a single source tree in nfs mounted on several different
systems each running a supported distribution.  When I make a
change to the source base I suspect may break things I can
concurrently build from the same source on all the systems each
in their own subdirectory.

wget -c http://github.com/downloads/behlendorf/zfs/zfs-x.y.z.tar.gz
tar -xzf zfs-x.y.z.tar.gz
cd zfs-x-y-z

------------------------- run concurrently ----------------------
<ubuntu system>  <fedora system>  <debian system>  <rhel6 system>
mkdir ubuntu     mkdir fedora     mkdir debian     mkdir rhel6
cd ubuntu        cd fedora        cd debian        cd rhel6
../configure     ../configure     ../configure     ../configure
make             make             make             make
make check       make check       make check       make check

This change also moves many of the include headers from individual
incude/sys directories under the modules directory in to a single
top level include directory.  This has the advantage of making
the build rules cleaner and logically it makes a bit more sense.

1 files changed, 73 insertions, 0 deletions

diff --git a/include/sys/nvpair_impl.h b/include/sys/nvpair_impl.h
new file mode 100644
index 000000000..b851ddd54
--- /dev/null
+++ b/include/sys/nvpair_impl.h
@@ -0,0 +1,73 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef	_NVPAIR_IMPL_H
+#define	_NVPAIR_IMPL_H
+
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <sys/nvpair.h>
+
+/*
+ * The structures here provided for information and debugging purposes only
+ * may be changed in the future.
+ */
+
+/*
+ * implementation linked list for pre-packed data
+ */
+typedef struct i_nvp i_nvp_t;
+
+struct i_nvp {
+	union {
+		uint64_t	_nvi_align;	/* ensure alignment */
+		struct {
+			i_nvp_t	*_nvi_next;	/* pointer to next nvpair */
+			i_nvp_t	*_nvi_prev;	/* pointer to prev nvpair */
+		} _nvi;
+	} _nvi_un;
+	nvpair_t nvi_nvp;			/* nvpair */
+};
+#define	nvi_next	_nvi_un._nvi._nvi_next
+#define	nvi_prev	_nvi_un._nvi._nvi_prev
+
+typedef struct {
+	i_nvp_t		*nvp_list;	/* linked list of nvpairs */
+	i_nvp_t		*nvp_last;	/* last nvpair */
+	i_nvp_t		*nvp_curr;	/* current walker nvpair */
+	nv_alloc_t	*nvp_nva;	/* pluggable allocator */
+	uint32_t	nvp_stat;	/* internal state */
+} nvpriv_t;
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* _NVPAIR_IMPL_H */