License cleanup: add SPDX license identifier to uapi header files with no license

Many user space API headers are missing licensing information, which
makes it hard for compliance tools to determine the correct license.

By default are files without license information under the default
license of the kernel, which is GPLV2.  Marking them GPLV2 would exclude
them from being included in non GPLV2 code, which is obviously not
intended. The user space API headers fall under the syscall exception
which is in the kernels COPYING file:

   NOTE! This copyright does *not* cover user programs that use kernel
   services by normal system calls - this is merely considered normal use
   of the kernel, and does *not* fall under the heading of "derived work".

otherwise syscall usage would not be possible.

Update the files which contain no license information with an SPDX
license identifier.  The chosen identifier is 'GPL-2.0 WITH
Linux-syscall-note' which is the officially assigned identifier for the
Linux syscall exception.  SPDX license identifiers are a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.  See the previous patch in this series for the
methodology of how this patch was researched.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

8 files changed, 8 insertions, 0 deletions

diff --git a/include/uapi/linux/netfilter_ipv4/ip_tables.h b/include/uapi/linux/netfilter_ipv4/ip_tables.h
index d0da53d96d93..6aaeb14bfce1 100644
--- a/include/uapi/linux/netfilter_ipv4/ip_tables.h
+++ b/include/uapi/linux/netfilter_ipv4/ip_tables.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 /*
  * 25-Jul-1998 Major changes to allow for ip chain table
  *
diff --git a/include/uapi/linux/netfilter_ipv4/ipt_CLUSTERIP.h b/include/uapi/linux/netfilter_ipv4/ipt_CLUSTERIP.h
index eac0f6548f47..ff6599494fe6 100644
--- a/include/uapi/linux/netfilter_ipv4/ipt_CLUSTERIP.h
+++ b/include/uapi/linux/netfilter_ipv4/ipt_CLUSTERIP.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 #ifndef _IPT_CLUSTERIP_H_target
 #define _IPT_CLUSTERIP_H_target
 
diff --git a/include/uapi/linux/netfilter_ipv4/ipt_LOG.h b/include/uapi/linux/netfilter_ipv4/ipt_LOG.h
index 5d8152077d71..6dec14ba851b 100644
--- a/include/uapi/linux/netfilter_ipv4/ipt_LOG.h
+++ b/include/uapi/linux/netfilter_ipv4/ipt_LOG.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 #ifndef _IPT_LOG_H
 #define _IPT_LOG_H
 
diff --git a/include/uapi/linux/netfilter_ipv4/ipt_REJECT.h b/include/uapi/linux/netfilter_ipv4/ipt_REJECT.h
index 4293a1ad1b01..ae61ddd328b0 100644
--- a/include/uapi/linux/netfilter_ipv4/ipt_REJECT.h
+++ b/include/uapi/linux/netfilter_ipv4/ipt_REJECT.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 #ifndef _IPT_REJECT_H
 #define _IPT_REJECT_H
 
diff --git a/include/uapi/linux/netfilter_ipv4/ipt_TTL.h b/include/uapi/linux/netfilter_ipv4/ipt_TTL.h
index f6ac169d92f9..57d2fc67a943 100644
--- a/include/uapi/linux/netfilter_ipv4/ipt_TTL.h
+++ b/include/uapi/linux/netfilter_ipv4/ipt_TTL.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 /* TTL modification module for IP tables
  * (C) 2000 by Harald Welte <laforge@netfilter.org> */
 
diff --git a/include/uapi/linux/netfilter_ipv4/ipt_ah.h b/include/uapi/linux/netfilter_ipv4/ipt_ah.h
index 4e02bb0119e3..606ce90dbf83 100644
--- a/include/uapi/linux/netfilter_ipv4/ipt_ah.h
+++ b/include/uapi/linux/netfilter_ipv4/ipt_ah.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 #ifndef _IPT_AH_H
 #define _IPT_AH_H
 
diff --git a/include/uapi/linux/netfilter_ipv4/ipt_ecn.h b/include/uapi/linux/netfilter_ipv4/ipt_ecn.h
index 0e0c063dbf60..8121bec47026 100644
--- a/include/uapi/linux/netfilter_ipv4/ipt_ecn.h
+++ b/include/uapi/linux/netfilter_ipv4/ipt_ecn.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 #ifndef _IPT_ECN_H
 #define _IPT_ECN_H
 
diff --git a/include/uapi/linux/netfilter_ipv4/ipt_ttl.h b/include/uapi/linux/netfilter_ipv4/ipt_ttl.h
index 37bee4442486..ad0226a8629b 100644
--- a/include/uapi/linux/netfilter_ipv4/ipt_ttl.h
+++ b/include/uapi/linux/netfilter_ipv4/ipt_ttl.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 /* IP tables module for matching the value of the TTL
  * (C) 2000 by Harald Welte <laforge@gnumonks.org> */