Update build system and packaging

Minimal changes required to integrate the SPL sources in to the
ZFS repository build infrastructure and packaging.

Build system and packaging:
  * Renamed SPL_* autoconf m4 macros to ZFS_*.
  * Removed redundant SPL_* autoconf m4 macros.
  * Updated the RPM spec files to remove SPL package dependency.
  * The zfs package obsoletes the spl package, and the zfs-kmod
    package obsoletes the spl-kmod package.
  * The zfs-kmod-devel* packages were updated to add compatibility
    symlinks under /usr/src/spl-x.y.z until all dependent packages
    can be updated.  They will be removed in a future release.
  * Updated copy-builtin script for in-kernel builds.
  * Updated DKMS package to include the spl.ko.
  * Updated stale AUTHORS file to include all contributors.
  * Updated stale COPYRIGHT and included the SPL as an exception.
  * Renamed README.markdown to README.md
  * Renamed OPENSOLARIS.LICENSE to LICENSE.
  * Renamed DISCLAIMER to NOTICE.

Required code changes:
  * Removed redundant HAVE_SPL macro.
  * Removed _BOOT from nvpairs since it doesn't apply for Linux.
  * Initial header cleanup (removal of empty headers, refactoring).
  * Remove SPL repository clone/build from zimport.sh.
  * Use of DEFINE_RATELIMIT_STATE and DEFINE_SPINLOCK removed due
    to build issues when forcing C99 compilation.
  * Replaced legacy ACCESS_ONCE with READ_ONCE.
  * Include needed headers for `current` and `EXPORT_SYMBOL`.

Reviewed-by: Tony Hutter <[email protected]>
Reviewed-by: Olaf Faaland <[email protected]>
Reviewed-by: Matthew Ahrens <[email protected]>
Reviewed-by: Pavel Zakharov <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
TEST_ZIMPORT_SKIP="yes"
Closes #7556

12 files changed, 40 insertions, 206 deletions

diff --git a/lib/libspl/include/Makefile.am b/lib/libspl/include/Makefile.am
index 7882c1b9c..7f4098a16 100644
--- a/lib/libspl/include/Makefile.am
+++ b/lib/libspl/include/Makefile.am
@@ -4,19 +4,16 @@ libspldir = $(includedir)/libspl
 libspl_HEADERS = \
 	$(top_srcdir)/lib/libspl/include/assert.h \
 	$(top_srcdir)/lib/libspl/include/atomic.h \
-	$(top_srcdir)/lib/libspl/include/attr.h \
 	$(top_srcdir)/lib/libspl/include/devid.h \
 	$(top_srcdir)/lib/libspl/include/libdevinfo.h \
 	$(top_srcdir)/lib/libspl/include/libgen.h \
 	$(top_srcdir)/lib/libspl/include/libshare.h \
 	$(top_srcdir)/lib/libspl/include/limits.h \
 	$(top_srcdir)/lib/libspl/include/locale.h \
-	$(top_srcdir)/lib/libspl/include/note.h \
 	$(top_srcdir)/lib/libspl/include/statcommon.h \
 	$(top_srcdir)/lib/libspl/include/stdio.h \
 	$(top_srcdir)/lib/libspl/include/stdlib.h \
 	$(top_srcdir)/lib/libspl/include/string.h \
-	$(top_srcdir)/lib/libspl/include/strings.h \
 	$(top_srcdir)/lib/libspl/include/stropts.h \
 	$(top_srcdir)/lib/libspl/include/synch.h \
 	$(top_srcdir)/lib/libspl/include/thread.h \
diff --git a/lib/libspl/include/attr.h b/lib/libspl/include/attr.h
deleted file mode 100644
index da1671a75..000000000
--- a/lib/libspl/include/attr.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * 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
- */
-
-#ifndef _LIBSPL_ATTR_H
-#define	_LIBSPL_ATTR_H
-
-#endif /* _LIBSPL_ATTR_H */
diff --git a/lib/libspl/include/note.h b/lib/libspl/include/note.h
deleted file mode 100644
index cb6b33e1d..000000000
--- a/lib/libspl/include/note.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * 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 (c) 1994 by Sun Microsystems, Inc.
- */
-
-/*
- * note.h:      interface for annotating source with info for tools
- *
- * NOTE is the default interface, but if the identifier NOTE is in use for
- * some other purpose, you may prepare a similar header file using your own
- * identifier, mapping that identifier to _NOTE.  Also, exported header
- * files should *not* use NOTE, since the name may already be in use in
- * a program's namespace.  Rather, exported header files should include
- * sys/note.h directly and use _NOTE.  For consistency, all kernel source
- * should use _NOTE.
- */
-
-#ifndef _NOTE_H
-#define	_NOTE_H
-
-#include <sys/note.h>
-
-#ifdef  __cplusplus
-extern "C" {
-#endif
-
-#define	NOTE	_NOTE
-
-#ifdef  __cplusplus
-}
-#endif
-
-#endif  /* _NOTE_H */
diff --git a/lib/libspl/include/sys/Makefile.am b/lib/libspl/include/sys/Makefile.am
index 9c67e14b0..e7af317e0 100644
--- a/lib/libspl/include/sys/Makefile.am
+++ b/lib/libspl/include/sys/Makefile.am
@@ -8,7 +8,6 @@ libspl_HEADERS = \
 	$(top_srcdir)/lib/libspl/include/sys/byteorder.h \
 	$(top_srcdir)/lib/libspl/include/sys/callb.h \
 	$(top_srcdir)/lib/libspl/include/sys/cmn_err.h \
-	$(top_srcdir)/lib/libspl/include/sys/compress.h \
 	$(top_srcdir)/lib/libspl/include/sys/cred.h \
 	$(top_srcdir)/lib/libspl/include/sys/debug.h \
 	$(top_srcdir)/lib/libspl/include/sys/dkio.h \
@@ -28,7 +27,6 @@ libspl_HEADERS = \
 	$(top_srcdir)/lib/libspl/include/sys/mkdev.h \
 	$(top_srcdir)/lib/libspl/include/sys/mnttab.h \
 	$(top_srcdir)/lib/libspl/include/sys/mount.h \
-	$(top_srcdir)/lib/libspl/include/sys/note.h \
 	$(top_srcdir)/lib/libspl/include/sys/param.h \
 	$(top_srcdir)/lib/libspl/include/sys/policy.h \
 	$(top_srcdir)/lib/libspl/include/sys/poll.h \
@@ -37,11 +35,12 @@ libspl_HEADERS = \
 	$(top_srcdir)/lib/libspl/include/sys/signal.h \
 	$(top_srcdir)/lib/libspl/include/sys/stack.h \
 	$(top_srcdir)/lib/libspl/include/sys/stat.h \
+	$(top_srcdir)/lib/libspl/include/sys/stdtypes.h \
+	$(top_srcdir)/lib/libspl/include/sys/strings.h \
 	$(top_srcdir)/lib/libspl/include/sys/stropts.h \
 	$(top_srcdir)/lib/libspl/include/sys/sunddi.h \
 	$(top_srcdir)/lib/libspl/include/sys/sysmacros.h \
 	$(top_srcdir)/lib/libspl/include/sys/systeminfo.h \
-	$(top_srcdir)/lib/libspl/include/sys/systm.h \
 	$(top_srcdir)/lib/libspl/include/sys/time.h \
 	$(top_srcdir)/lib/libspl/include/sys/types32.h \
 	$(top_srcdir)/lib/libspl/include/sys/types.h \
diff --git a/lib/libspl/include/sys/compress.h b/lib/libspl/include/sys/compress.h
deleted file mode 100644
index 282f178ba..000000000
--- a/lib/libspl/include/sys/compress.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * 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 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
-
-#ifndef _LIBSPL_SYS_COMPRESS_H
-#define	_LIBSPL_SYS_COMPRESS_H
-
-#endif /* _LIBSPL_SYS_COMPRESS_H */
diff --git a/lib/libspl/include/sys/note.h b/lib/libspl/include/sys/note.h
deleted file mode 100644
index 6625b68d9..000000000
--- a/lib/libspl/include/sys/note.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * 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 (c) 1994 by Sun Microsystems, Inc.
- */
-
-/*
- * sys/note.h:	interface for annotating source with info for tools
- *
- * This is the underlying interface; NOTE (/usr/include/note.h) is the
- * preferred interface, but all exported header files should include this
- * file directly and use _NOTE so as not to take "NOTE" from the user's
- * namespace.  For consistency, *all* kernel source should use _NOTE.
- *
- * By default, annotations expand to nothing.  This file implements
- * that.  Tools using annotations will interpose a different version
- * of this file that will expand annotations as needed.
- */
-
-#ifndef	_SYS_NOTE_H
-#define	_SYS_NOTE_H
-
-#ifdef	__cplusplus
-extern "C" {
-#endif
-
-#ifndef _NOTE
-#define	_NOTE(s)
-#endif
-
-#ifdef	__cplusplus
-}
-#endif
-
-#endif	/* _SYS_NOTE_H */
diff --git a/lib/libspl/include/sys/systm.h b/lib/libspl/include/sys/stdtypes.h
index 1ed031d4e..c26e2dc96 100644
--- a/lib/libspl/include/sys/systm.h
+++ b/lib/libspl/include/sys/stdtypes.h
@@ -19,12 +19,36 @@
  *
  * CDDL HEADER END
  */
-/*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
 
-#ifndef _LIBSPL_SYS_SYSTM_H
-#define	_LIBSPL_SYS_SYSTM_H
+#ifndef	__SYS_STDTYPES_H
+#define	__SYS_STDTYPES_H
+
+typedef enum {
+	B_FALSE = 0,
+	B_TRUE = 1
+} boolean_t;
+
+typedef unsigned char		uchar_t;
+typedef unsigned short		ushort_t;
+typedef unsigned int		uint_t;
+typedef unsigned long		ulong_t;
+typedef unsigned long long	u_longlong_t;
+typedef long long		longlong_t;
+
+typedef longlong_t		offset_t;
+typedef u_longlong_t		u_offset_t;
+typedef u_longlong_t		len_t;
+typedef longlong_t		diskaddr_t;
+
+typedef ulong_t			pgcnt_t;	/* number of pages */
+typedef long			spgcnt_t;	/* signed number of pages */
+
+typedef short			pri_t;
+typedef ushort_t		o_mode_t;	/* old file attribute type */
+
+typedef int			major_t;
+typedef int			minor_t;
+
+typedef short			index_t;
 
-#endif /* _LIBSPL_SYS_SYSTM_H */
+#endif	/* __SYS_STDTYPES_H */
diff --git a/lib/libspl/include/strings.h b/lib/libspl/include/sys/strings.h
index 3f35af4a4..c142047dc 100644
--- a/lib/libspl/include/strings.h
+++ b/lib/libspl/include/sys/strings.h
@@ -24,10 +24,10 @@
  * Use is subject to license terms.
  */
 
-#ifndef _LIBSPL_STRINGS_H
-#define	_LIBSPL_STRINGS_H
+#ifndef _LIBSPL_SYS_STRINGS_H
+#define	_LIBSPL_SYS_STRINGS_H
 
 #include <string.h>
-#include_next <strings.h>
+#include <strings.h>
 
 #endif
diff --git a/lib/libspl/include/sys/sysmacros.h b/lib/libspl/include/sys/sysmacros.h
index 31f347c6f..22fcb04b9 100644
--- a/lib/libspl/include/sys/sysmacros.h
+++ b/lib/libspl/include/sys/sysmacros.h
@@ -98,4 +98,6 @@
 #define	offsetof(s, m)	((size_t)(&(((s *)0)->m)))
 #endif
 
+#define	_NOTE(x)
+
 #endif /* _LIBSPL_SYS_SYSMACROS_H */
diff --git a/lib/libspl/include/sys/types.h b/lib/libspl/include/sys/types.h
index 7fb53730f..ea02ffac9 100644
--- a/lib/libspl/include/sys/types.h
+++ b/lib/libspl/include/sys/types.h
@@ -38,40 +38,15 @@
 #include_next <sys/types.h>
 #include <sys/types32.h>
 #include <sys/va_list.h>
+#include <sys/stdtypes.h>
 
 #ifndef HAVE_INTTYPES
 #include <inttypes.h>
-
-typedef enum boolean { B_FALSE, B_TRUE } boolean_t;
-
-typedef unsigned char	uchar_t;
-typedef unsigned short	ushort_t;
-typedef unsigned int	uint_t;
-typedef unsigned long	ulong_t;
-
-typedef long long	longlong_t;
-typedef unsigned long long u_longlong_t;
 #endif /* HAVE_INTTYPES */
 
-typedef longlong_t	offset_t;
-typedef u_longlong_t	u_offset_t;
-typedef u_longlong_t	len_t;
-typedef longlong_t	diskaddr_t;
-
-typedef ulong_t		pgcnt_t;	/* number of pages */
-typedef long		spgcnt_t;	/* signed number of pages */
-
-typedef short		pri_t;
-
 typedef int		zoneid_t;
 typedef int		projid_t;
 
-typedef int		major_t;
-typedef int		minor_t;
-
-typedef ushort_t o_mode_t; /* old file attribute type */
-typedef short		index_t;
-
 /*
  * Definitions remaining from previous partial support for 64-bit file
  * offsets.  This partial support for devices greater than 2gb requires
diff --git a/lib/libspl/include/sys/types32.h b/lib/libspl/include/sys/types32.h
index 9ab3b0782..bb41aa34b 100644
--- a/lib/libspl/include/sys/types32.h
+++ b/lib/libspl/include/sys/types32.h
@@ -26,8 +26,6 @@
 #ifndef _SYS_TYPES32_H
 #define	_SYS_TYPES32_H
 
-
-
 #include <sys/inttypes.h>
 
 #ifdef	__cplusplus
diff --git a/lib/libspl/include/umem.h b/lib/libspl/include/umem.h
index 5b10ac801..59dc93144 100644
--- a/lib/libspl/include/umem.h
+++ b/lib/libspl/include/umem.h
@@ -39,6 +39,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 
 #ifdef  __cplusplus
 extern "C" {