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 <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>
2017-11-01 22:07:57 +08:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2011-03-07 17:20:08 +08:00
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#ifndef GENL_MAGIC_STRUCT_H
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#define GENL_MAGIC_STRUCT_H
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#ifndef GENL_MAGIC_FAMILY
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# error "you need to define GENL_MAGIC_FAMILY before inclusion"
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#endif
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#ifndef GENL_MAGIC_VERSION
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# error "you need to define GENL_MAGIC_VERSION before inclusion"
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#endif
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#ifndef GENL_MAGIC_INCLUDE_FILE
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# error "you need to define GENL_MAGIC_INCLUDE_FILE before inclusion"
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#endif
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#include <linux/genetlink.h>
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#include <linux/types.h>
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#define CONCAT__(a,b) a ## b
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#define CONCAT_(a,b) CONCAT__(a,b)
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extern int CONCAT_(GENL_MAGIC_FAMILY, _genl_register)(void);
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extern void CONCAT_(GENL_MAGIC_FAMILY, _genl_unregister)(void);
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/*
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* Extension of genl attribute validation policies {{{2
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*/
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2011-05-19 23:39:28 +08:00
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/*
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* @DRBD_GENLA_F_MANDATORY: By default, netlink ignores attributes it does not
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* know about. This flag can be set in nlattr->nla_type to indicate that this
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* attribute must not be ignored.
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2011-03-07 17:20:08 +08:00
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*
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2011-05-19 23:39:28 +08:00
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* We check and remove this flag in drbd_nla_check_mandatory() before
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* validating the attribute types and lengths via nla_parse_nested().
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*/
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#define DRBD_GENLA_F_MANDATORY (1 << 14)
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/*
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* Flags specific to drbd and not visible at the netlink layer, used in
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* <struct>_from_attrs and <struct>_to_skb:
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2011-03-07 17:20:08 +08:00
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*
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2011-05-19 23:39:28 +08:00
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* @DRBD_F_REQUIRED: Attribute is required; a request without this attribute is
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* invalid.
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2011-03-07 17:20:08 +08:00
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*
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2011-05-19 23:39:28 +08:00
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* @DRBD_F_SENSITIVE: Attribute includes sensitive information and must not be
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* included in unpriviledged get requests or broadcasts.
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2011-03-07 17:20:08 +08:00
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*
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2011-05-19 23:39:28 +08:00
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* @DRBD_F_INVARIANT: Attribute is set when an object is initially created, but
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* cannot subsequently be changed.
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2011-03-07 17:20:08 +08:00
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*/
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2011-05-19 23:39:28 +08:00
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#define DRBD_F_REQUIRED (1 << 0)
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#define DRBD_F_SENSITIVE (1 << 1)
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#define DRBD_F_INVARIANT (1 << 2)
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2011-03-07 17:20:08 +08:00
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2011-05-19 23:39:28 +08:00
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#define __nla_type(x) ((__u16)((x) & NLA_TYPE_MASK & ~DRBD_GENLA_F_MANDATORY))
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2011-03-07 17:20:08 +08:00
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/* }}}1
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* MAGIC
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* multi-include macro expansion magic starts here
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*/
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/* MAGIC helpers {{{2 */
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2016-05-09 17:40:20 +08:00
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static inline int nla_put_u64_0pad(struct sk_buff *skb, int attrtype, u64 value)
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{
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return nla_put_64bit(skb, attrtype, sizeof(u64), &value, 0);
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}
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2011-03-07 17:20:08 +08:00
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/* possible field types */
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#define __flg_field(attr_nr, attr_flag, name) \
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2011-05-04 22:06:51 +08:00
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__field(attr_nr, attr_flag, name, NLA_U8, char, \
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2012-07-12 02:36:03 +08:00
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nla_get_u8, nla_put_u8, false)
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2011-03-07 17:20:08 +08:00
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#define __u8_field(attr_nr, attr_flag, name) \
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__field(attr_nr, attr_flag, name, NLA_U8, unsigned char, \
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2012-07-12 02:36:03 +08:00
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nla_get_u8, nla_put_u8, false)
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2011-03-07 17:20:08 +08:00
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#define __u16_field(attr_nr, attr_flag, name) \
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__field(attr_nr, attr_flag, name, NLA_U16, __u16, \
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2012-07-12 02:36:03 +08:00
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nla_get_u16, nla_put_u16, false)
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2011-03-07 17:20:08 +08:00
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#define __u32_field(attr_nr, attr_flag, name) \
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__field(attr_nr, attr_flag, name, NLA_U32, __u32, \
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2012-07-12 02:36:03 +08:00
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nla_get_u32, nla_put_u32, false)
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2011-05-04 16:33:52 +08:00
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#define __s32_field(attr_nr, attr_flag, name) \
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__field(attr_nr, attr_flag, name, NLA_U32, __s32, \
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2012-07-12 02:36:03 +08:00
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nla_get_u32, nla_put_u32, true)
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2011-03-07 17:20:08 +08:00
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#define __u64_field(attr_nr, attr_flag, name) \
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__field(attr_nr, attr_flag, name, NLA_U64, __u64, \
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2016-05-09 17:40:20 +08:00
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nla_get_u64, nla_put_u64_0pad, false)
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2011-03-07 17:20:08 +08:00
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#define __str_field(attr_nr, attr_flag, name, maxlen) \
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__array(attr_nr, attr_flag, name, NLA_NUL_STRING, char, maxlen, \
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2020-11-16 01:08:06 +08:00
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nla_strscpy, nla_put, false)
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2011-03-07 17:20:08 +08:00
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#define __bin_field(attr_nr, attr_flag, name, maxlen) \
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__array(attr_nr, attr_flag, name, NLA_BINARY, char, maxlen, \
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2012-07-12 02:36:03 +08:00
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nla_memcpy, nla_put, false)
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2011-03-07 17:20:08 +08:00
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2011-05-03 20:56:09 +08:00
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/* fields with default values */
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#define __flg_field_def(attr_nr, attr_flag, name, default) \
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__flg_field(attr_nr, attr_flag, name)
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#define __u32_field_def(attr_nr, attr_flag, name, default) \
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__u32_field(attr_nr, attr_flag, name)
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2011-05-12 18:02:54 +08:00
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#define __s32_field_def(attr_nr, attr_flag, name, default) \
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__s32_field(attr_nr, attr_flag, name)
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2011-05-03 20:56:09 +08:00
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#define __str_field_def(attr_nr, attr_flag, name, maxlen) \
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__str_field(attr_nr, attr_flag, name, maxlen)
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2011-03-07 17:20:08 +08:00
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#define GENL_op_init(args...) args
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#define GENL_doit(handler) \
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.doit = handler, \
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.flags = GENL_ADMIN_PERM,
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#define GENL_dumpit(handler) \
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.dumpit = handler, \
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.flags = GENL_ADMIN_PERM,
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/* }}}1
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* Magic: define the enum symbols for genl_ops
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* Magic: define the enum symbols for top level attributes
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* Magic: define the enum symbols for nested attributes
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* {{{2
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*/
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#undef GENL_struct
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#define GENL_struct(tag_name, tag_number, s_name, s_fields)
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#undef GENL_mc_group
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#define GENL_mc_group(group)
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#undef GENL_notification
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#define GENL_notification(op_name, op_num, mcast_group, tla_list) \
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op_name = op_num,
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#undef GENL_op
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#define GENL_op(op_name, op_num, handler, tla_list) \
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op_name = op_num,
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enum {
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#include GENL_MAGIC_INCLUDE_FILE
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};
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#undef GENL_notification
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#define GENL_notification(op_name, op_num, mcast_group, tla_list)
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#undef GENL_op
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#define GENL_op(op_name, op_num, handler, attr_list)
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#undef GENL_struct
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#define GENL_struct(tag_name, tag_number, s_name, s_fields) \
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tag_name = tag_number,
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enum {
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#include GENL_MAGIC_INCLUDE_FILE
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};
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#undef GENL_struct
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#define GENL_struct(tag_name, tag_number, s_name, s_fields) \
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enum { \
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s_fields \
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};
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#undef __field
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2011-05-17 19:29:46 +08:00
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#define __field(attr_nr, attr_flag, name, nla_type, type, \
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__get, __put, __is_signed) \
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2011-05-19 23:39:28 +08:00
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T_ ## name = (__u16)(attr_nr | ((attr_flag) & DRBD_GENLA_F_MANDATORY)),
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2011-03-07 17:20:08 +08:00
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#undef __array
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2011-05-17 19:29:46 +08:00
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#define __array(attr_nr, attr_flag, name, nla_type, type, \
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maxlen, __get, __put, __is_signed) \
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2011-05-19 23:39:28 +08:00
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T_ ## name = (__u16)(attr_nr | ((attr_flag) & DRBD_GENLA_F_MANDATORY)),
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2011-03-07 17:20:08 +08:00
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#include GENL_MAGIC_INCLUDE_FILE
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/* }}}1
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* Magic: compile time assert unique numbers for operations
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* Magic: -"- unique numbers for top level attributes
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* Magic: -"- unique numbers for nested attributes
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* {{{2
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*/
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#undef GENL_struct
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#define GENL_struct(tag_name, tag_number, s_name, s_fields)
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#undef GENL_op
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#define GENL_op(op_name, op_num, handler, attr_list) \
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case op_name:
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#undef GENL_notification
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#define GENL_notification(op_name, op_num, mcast_group, tla_list) \
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case op_name:
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static inline void ct_assert_unique_operations(void)
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{
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switch (0) {
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#include GENL_MAGIC_INCLUDE_FILE
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2018-12-21 00:23:43 +08:00
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case 0:
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2011-03-07 17:20:08 +08:00
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;
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}
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}
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#undef GENL_op
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#define GENL_op(op_name, op_num, handler, attr_list)
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#undef GENL_notification
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#define GENL_notification(op_name, op_num, mcast_group, tla_list)
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#undef GENL_struct
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#define GENL_struct(tag_name, tag_number, s_name, s_fields) \
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case tag_number:
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static inline void ct_assert_unique_top_level_attributes(void)
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{
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switch (0) {
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#include GENL_MAGIC_INCLUDE_FILE
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2018-12-21 00:23:43 +08:00
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case 0:
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2011-03-07 17:20:08 +08:00
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;
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}
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}
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#undef GENL_struct
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#define GENL_struct(tag_name, tag_number, s_name, s_fields) \
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static inline void ct_assert_unique_ ## s_name ## _attributes(void) \
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{ \
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switch (0) { \
|
2018-12-21 00:23:43 +08:00
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s_fields \
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case 0: \
|
2011-03-07 17:20:08 +08:00
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; \
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} \
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}
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#undef __field
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2011-05-17 19:29:46 +08:00
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#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put, \
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|
|
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|
__is_signed) \
|
2011-03-07 17:20:08 +08:00
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case attr_nr:
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|
#undef __array
|
2011-05-17 19:29:46 +08:00
|
|
|
#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, \
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|
|
|
|
__get, __put, __is_signed) \
|
2011-03-07 17:20:08 +08:00
|
|
|
case attr_nr:
|
|
|
|
|
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|
|
#include GENL_MAGIC_INCLUDE_FILE
|
|
|
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|
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|
|
|
|
/* }}}1
|
|
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|
|
* Magic: declare structs
|
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|
* struct <name> {
|
|
|
|
|
* fields
|
|
|
|
|
* };
|
|
|
|
|
* {{{2
|
|
|
|
|
*/
|
|
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|
#undef GENL_struct
|
|
|
|
|
#define GENL_struct(tag_name, tag_number, s_name, s_fields) \
|
|
|
|
|
struct s_name { s_fields };
|
|
|
|
|
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|
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|
|
#undef __field
|
2011-05-17 19:29:46 +08:00
|
|
|
#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put, \
|
|
|
|
|
__is_signed) \
|
2011-03-07 17:20:08 +08:00
|
|
|
type name;
|
|
|
|
|
|
|
|
|
|
#undef __array
|
2011-05-17 19:29:46 +08:00
|
|
|
#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, \
|
|
|
|
|
__get, __put, __is_signed) \
|
2011-03-07 17:20:08 +08:00
|
|
|
type name[maxlen]; \
|
|
|
|
|
__u32 name ## _len;
|
|
|
|
|
|
|
|
|
|
#include GENL_MAGIC_INCLUDE_FILE
|
|
|
|
|
|
2011-05-17 19:29:46 +08:00
|
|
|
#undef GENL_struct
|
|
|
|
|
#define GENL_struct(tag_name, tag_number, s_name, s_fields) \
|
|
|
|
|
enum { \
|
|
|
|
|
s_fields \
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#undef __field
|
|
|
|
|
#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put, \
|
|
|
|
|
is_signed) \
|
|
|
|
|
F_ ## name ## _IS_SIGNED = is_signed,
|
|
|
|
|
|
|
|
|
|
#undef __array
|
|
|
|
|
#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, \
|
|
|
|
|
__get, __put, is_signed) \
|
|
|
|
|
F_ ## name ## _IS_SIGNED = is_signed,
|
|
|
|
|
|
|
|
|
|
#include GENL_MAGIC_INCLUDE_FILE
|
|
|
|
|
|
2011-03-07 17:20:08 +08:00
|
|
|
/* }}}1 */
|
|
|
|
|
#endif /* GENL_MAGIC_STRUCT_H */
|