Make license compatibility checks consistent

Apply the license specified in the META file to ensure the
compatibility checks are all performed consistently.

Signed-off-by: Brian Behlendorf <[email protected]>
Issue #2757

6 files changed, 19 insertions, 13 deletions

diff --git a/META b/META
index 2a3cd3cfa..5c82b23f4 100644
--- a/META
+++ b/META
@@ -5,4 +5,4 @@ Version:      0.6.3
 Release:      1
 Release-Tags: relext
 License:      CDDL
-Author:       Sun Microsystems/Oracle, Lawrence Livermore National Laboratory
+Author:       OpenZFS on Linux
diff --git a/config/kernel-acl.m4 b/config/kernel-acl.m4
index a03ee5bff..1cb28b25a 100644
--- a/config/kernel-acl.m4
+++ b/config/kernel-acl.m4
@@ -1,6 +1,6 @@
 dnl #
-dnl # Check if posix_acl_release can be used from a CDDL module,
-dnl # The is_owner_or_cap macro was replaced by
+dnl # Check if posix_acl_release can be used from a ZFS_META_LICENSED
+dnl # module.  The is_owner_or_cap macro was replaced by
 dnl # inode_owner_or_capable
 dnl #
 AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_RELEASE], [
@@ -26,7 +26,7 @@ AC_DEFUN([ZFS_AC_KERNEL_POSIX_ACL_RELEASE], [
 		#include <linux/fs.h>
 		#include <linux/posix_acl.h>
 
-		MODULE_LICENSE("CDDL");
+		MODULE_LICENSE("$ZFS_META_LICENSE");
 	],[
 		struct posix_acl* tmp = posix_acl_alloc(1, 0);
 		posix_acl_release(tmp);
diff --git a/config/kernel-blk-end-request.m4 b/config/kernel-blk-end-request.m4
index ca0a04284..c2980e593 100644
--- a/config/kernel-blk-end-request.m4
+++ b/config/kernel-blk-end-request.m4
@@ -25,7 +25,7 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_END_REQUEST], [
 		#include <linux/module.h>
 		#include <linux/blkdev.h>
 		
-		MODULE_LICENSE("CDDL");
+		MODULE_LICENSE("$ZFS_META_LICENSE");
 	],[
 		struct request *req = NULL;
 		(void) blk_end_request(req, 0, 0);
diff --git a/config/kernel-blk-queue-flush.m4 b/config/kernel-blk-queue-flush.m4
index 261174735..bb74ea1c5 100644
--- a/config/kernel-blk-queue-flush.m4
+++ b/config/kernel-blk-queue-flush.m4
@@ -31,7 +31,7 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_FLUSH], [
 		#include <linux/module.h>
 		#include <linux/blkdev.h>
 
-		MODULE_LICENSE("CDDL");
+		MODULE_LICENSE("$ZFS_META_LICENSE");
 	],[
 		struct request_queue *q = NULL;
 		(void) blk_queue_flush(q, REQ_FLUSH);
diff --git a/config/kernel-blk-rq-bytes.m4 b/config/kernel-blk-rq-bytes.m4
index a95f8a8ea..bedbcc6e3 100644
--- a/config/kernel-blk-rq-bytes.m4
+++ b/config/kernel-blk-rq-bytes.m4
@@ -26,7 +26,7 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_BYTES], [
 		#include <linux/module.h>
 		#include <linux/blkdev.h>
 
-		MODULE_LICENSE("CDDL");
+		MODULE_LICENSE("$ZFS_META_LICENSE");
 	],[
 		struct request *req = NULL;
 		(void) blk_rq_bytes(req);
diff --git a/config/kernel.m4 b/config/kernel.m4
index 67a4ef6d2..909415fd3 100644
--- a/config/kernel.m4
+++ b/config/kernel.m4
@@ -420,8 +420,8 @@ AC_DEFUN([ZFS_AC_SPL], [
 dnl #
 dnl # Basic toolchain sanity check.
 dnl #
-AC_DEFUN([ZFS_AC_TEST_MODULE],
-	[AC_MSG_CHECKING([whether modules can be built])
+AC_DEFUN([ZFS_AC_TEST_MODULE], [
+	AC_MSG_CHECKING([whether modules can be built])
 	ZFS_LINUX_TRY_COMPILE([],[],[
 		AC_MSG_RESULT([yes])
 	],[
@@ -442,10 +442,16 @@ dnl # detected at configure time and cause a build failure.  Otherwise
 dnl # modules may be successfully built that behave incorrectly.
 dnl #
 AC_DEFUN([ZFS_AC_KERNEL_CONFIG], [
-
-	AS_IF([test "$ZFS_META_LICENSE" = GPL], [
-		AC_DEFINE([HAVE_GPL_ONLY_SYMBOLS], [1],
-			[Define to 1 if licensed under the GPL])
+	AC_RUN_IFELSE([
+		AC_LANG_PROGRAM([
+			#include "$LINUX/include/linux/license.h"
+		], [
+			return !license_is_gpl_compatible("$ZFS_META_LICENSE");
+		])
+	], [
+		AC_DEFINE([ZFS_IS_GPL_COMPATIBLE], [1],
+		    [Define to 1 if GPL-only symbols can be used])
+	], [
 	])
 
 	ZFS_AC_KERNEL_CONFIG_DEBUG_LOCK_ALLOC