From b24413180f5600bcb3bb70fbed5cf186b60864bd Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 1 Nov 2017 15:07:57 +0100 Subject: License cleanup: add SPDX GPL-2.0 license identifier to files with no license Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is 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. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman --- net/wireless/Makefile | 1 + net/wireless/ap.c | 1 + net/wireless/chan.c | 1 + net/wireless/core.h | 1 + net/wireless/debugfs.h | 1 + net/wireless/ethtool.c | 1 + net/wireless/ibss.c | 1 + net/wireless/mesh.c | 1 + net/wireless/mlme.c | 1 + net/wireless/nl80211.h | 1 + net/wireless/rdev-ops.h | 1 + net/wireless/scan.c | 1 + net/wireless/sme.c | 1 + net/wireless/sysfs.h | 1 + net/wireless/trace.h | 1 + net/wireless/util.c | 1 + net/wireless/wext-compat.c | 1 + net/wireless/wext-sme.c | 1 + 18 files changed, 18 insertions(+) (limited to 'net/wireless') diff --git a/net/wireless/Makefile b/net/wireless/Makefile index d06e5015751a..b7c0300e0b08 100644 --- a/net/wireless/Makefile +++ b/net/wireless/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_CFG80211) += cfg80211.o obj-$(CONFIG_LIB80211) += lib80211.o obj-$(CONFIG_LIB80211_CRYPT_WEP) += lib80211_crypt_wep.o diff --git a/net/wireless/ap.c b/net/wireless/ap.c index 25666d3009be..63682176c96c 100644 --- a/net/wireless/ap.c +++ b/net/wireless/ap.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #include #include #include diff --git a/net/wireless/chan.c b/net/wireless/chan.c index b8aa5a7d5c77..fad1b5baf8ff 100644 --- a/net/wireless/chan.c +++ b/net/wireless/chan.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * This file contains helper code to handle channel * settings and keeping track of what is possible at diff --git a/net/wireless/core.h b/net/wireless/core.h index 6e809325af3b..705835047f98 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Wireless configuration interface internals. * diff --git a/net/wireless/debugfs.h b/net/wireless/debugfs.h index 74fdd3811427..a8a135d94ab5 100644 --- a/net/wireless/debugfs.h +++ b/net/wireless/debugfs.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __CFG80211_DEBUGFS_H #define __CFG80211_DEBUGFS_H diff --git a/net/wireless/ethtool.c b/net/wireless/ethtool.c index e9e91298c70d..a9c0f368db5d 100644 --- a/net/wireless/ethtool.c +++ b/net/wireless/ethtool.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #include #include #include "core.h" diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c index 10bf040a0982..413d4f4e6334 100644 --- a/net/wireless/ibss.c +++ b/net/wireless/ibss.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Some IBSS support code for cfg80211. * diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c index 421a6b80ec62..51aa55618ef7 100644 --- a/net/wireless/mesh.c +++ b/net/wireless/mesh.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #include #include #include diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index d8df7a5180a0..e7c64a8dce54 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * cfg80211 MLME SAP interface * diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h index b96933322077..fc415c8f7aac 100644 --- a/net/wireless/nl80211.h +++ b/net/wireless/nl80211.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __NET_WIRELESS_NL80211_H #define __NET_WIRELESS_NL80211_H diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h index ce23d7d49960..0c06240d25af 100644 --- a/net/wireless/rdev-ops.h +++ b/net/wireless/rdev-ops.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __CFG80211_RDEV_OPS #define __CFG80211_RDEV_OPS diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 9f0901f3e42b..f6c5fe482506 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * cfg80211 scan result handling * diff --git a/net/wireless/sme.c b/net/wireless/sme.c index 0a49b88070d0..37cea4d98879 100644 --- a/net/wireless/sme.c +++ b/net/wireless/sme.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * SME code for cfg80211 * both driver SME event handling and the SME implementation diff --git a/net/wireless/sysfs.h b/net/wireless/sysfs.h index b533ed71daff..7b454c2de9b7 100644 --- a/net/wireless/sysfs.h +++ b/net/wireless/sysfs.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __WIRELESS_SYSFS_H #define __WIRELESS_SYSFS_H diff --git a/net/wireless/trace.h b/net/wireless/trace.h index 0f8db41eaddb..f3353fe5b35b 100644 --- a/net/wireless/trace.h +++ b/net/wireless/trace.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #undef TRACE_SYSTEM #define TRACE_SYSTEM cfg80211 diff --git a/net/wireless/util.c b/net/wireless/util.c index bcb1284c3415..c1238d582fd1 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Wireless utility functions * diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index 5d4a02c7979b..7ca04a7de85a 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * cfg80211 - wext compat code * diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c index c434f193f39a..c67d7a82ab13 100644 --- a/net/wireless/wext-sme.c +++ b/net/wireless/wext-sme.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * cfg80211 wext compat for managed mode. * -- cgit v1.2.3-59-g8ed1b