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, 97 insertions, 0 deletions

diff --git a/include/sys/vdev_disk.h b/include/sys/vdev_disk.h
new file mode 100644
index 000000000..986c33624
--- /dev/null
+++ b/include/sys/vdev_disk.h
@@ -0,0 +1,97 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (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 (C) 2008-2010 Lawrence Livermore National Security, LLC.
+ * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ * Written by Brian Behlendorf <[email protected]>.
+ * LLNL-CODE-403049.
+ */
+
+#ifndef _SYS_VDEV_DISK_H
+#define _SYS_VDEV_DISK_H
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#ifdef _KERNEL
+#include <sys/vdev.h>
+#include <sys/ddi.h>
+#include <sys/sunldi.h>
+#include <sys/sunddi.h>
+
+typedef struct vdev_disk {
+	ddi_devid_t		vd_devid;
+	char			*vd_minor;
+	struct block_device	*vd_bdev;
+} vdev_disk_t;
+
+extern int vdev_disk_physio(struct block_device *, caddr_t,
+			    size_t, uint64_t, int);
+extern int vdev_disk_read_rootlabel(char *, char *, nvlist_t **);
+
+/* 2.6.24 API change */
+#ifdef HAVE_2ARGS_BIO_END_IO_T
+# define BIO_END_IO_PROTO(fn, x, y, z)	static void fn(struct bio *x, int z)
+# define BIO_END_IO_RETURN(rc)		return
+#else
+# define BIO_END_IO_PROTO(fn, x, y, z)	static int fn(struct bio *x, \
+					              unsigned int y, int z)
+# define BIO_END_IO_RETURN(rc)		return rc
+#endif /* HAVE_2ARGS_BIO_END_IO_T */
+
+/* 2.6.29 API change */
+#ifdef HAVE_BIO_RW_SYNCIO
+# define DIO_RW_SYNCIO			BIO_RW_SYNCIO
+#else
+# define DIO_RW_SYNCIO			BIO_RW_SYNC
+#endif /* HAVE_BIO_RW_SYNCIO */
+
+/* 2.6.28 API change */
+#ifdef HAVE_OPEN_BDEV_EXCLUSIVE
+# define vdev_bdev_open(path, md, hld)	open_bdev_exclusive(path, md, hld)
+# define vdev_bdev_close(bdev, md)	close_bdev_exclusive(bdev, md)
+#else
+# define vdev_bdev_open(path, md, hld)	open_bdev_excl(path, md, hld)
+# define vdev_bdev_close(bdev, md)	close_bdev_excl(bdev)
+#endif /* HAVE_OPEN_BDEV_EXCLUSIVE */
+
+/* 2.6.22 API change */
+#ifdef HAVE_1ARG_INVALIDATE_BDEV
+# define vdev_bdev_invalidate(bdev)	invalidate_bdev(bdev)
+#else
+# define vdev_bdev_invalidate(bdev)	invalidate_bdev(bdev, 1)
+#endif /* HAVE_1ARG_INVALIDATE_BDEV */
+
+/* 2.6.30 API change */
+#ifdef HAVE_BDEV_LOGICAL_BLOCK_SIZE
+# define vdev_bdev_block_size(bdev)	bdev_logical_block_size(bdev)
+#else
+# define vdev_bdev_block_size(bdev)	bdev_hardsect_size(bdev)
+#endif
+
+#endif /* _KERNEL */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* _SYS_VDEV_DISK_H */