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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2005-04-17 06:20:36 +08:00
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/*
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* $Id: kernelcapi.h,v 1.8.6.2 2001/02/07 11:31:31 kai Exp $
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*
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* Kernel CAPI 2.0 Interface for Linux
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*
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* (c) Copyright 1997 by Carsten Paeth (calle@calle.in-berlin.de)
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*
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*/
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#ifndef __KERNELCAPI_H__
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#define __KERNELCAPI_H__
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#include <linux/list.h>
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#include <linux/skbuff.h>
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2006-12-04 12:15:30 +08:00
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#include <linux/workqueue.h>
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2010-02-08 18:12:13 +08:00
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#include <linux/notifier.h>
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2012-10-13 17:46:48 +08:00
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#include <uapi/linux/kernelcapi.h>
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2005-04-17 06:20:36 +08:00
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struct capi20_appl {
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u16 applid;
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capi_register_params rparam;
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void (*recv_message)(struct capi20_appl *ap, struct sk_buff *skb);
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void *private;
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/* internal to kernelcapi.o */
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unsigned long nrecvctlpkt;
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unsigned long nrecvdatapkt;
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unsigned long nsentctlpkt;
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unsigned long nsentdatapkt;
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2007-07-17 19:04:16 +08:00
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struct mutex recv_mtx;
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2005-04-17 06:20:36 +08:00
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struct sk_buff_head recv_queue;
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struct work_struct recv_work;
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int release_in_progress;
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};
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u16 capi20_isinstalled(void);
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u16 capi20_register(struct capi20_appl *ap);
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u16 capi20_release(struct capi20_appl *ap);
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u16 capi20_put_message(struct capi20_appl *ap, struct sk_buff *skb);
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u16 capi20_get_manufacturer(u32 contr, u8 buf[CAPI_MANUFACTURER_LEN]);
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u16 capi20_get_version(u32 contr, struct capi_version *verp);
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u16 capi20_get_serial(u32 contr, u8 serial[CAPI_SERIAL_LEN]);
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u16 capi20_get_profile(u32 contr, struct capi_profile *profp);
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2014-10-11 19:46:30 +08:00
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int capi20_manufacturer(unsigned long cmd, void __user *data);
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2005-04-17 06:20:36 +08:00
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2010-02-08 18:12:13 +08:00
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#define CAPICTR_UP 0
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#define CAPICTR_DOWN 1
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2005-04-17 06:20:36 +08:00
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2010-02-08 18:12:13 +08:00
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int register_capictr_notifier(struct notifier_block *nb);
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int unregister_capictr_notifier(struct notifier_block *nb);
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2005-04-17 06:20:36 +08:00
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#define CAPI_NOERROR 0x0000
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#define CAPI_TOOMANYAPPLS 0x1001
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#define CAPI_LOGBLKSIZETOSMALL 0x1002
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#define CAPI_BUFFEXECEEDS64K 0x1003
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#define CAPI_MSGBUFSIZETOOSMALL 0x1004
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#define CAPI_ANZLOGCONNNOTSUPPORTED 0x1005
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#define CAPI_REGRESERVED 0x1006
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#define CAPI_REGBUSY 0x1007
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#define CAPI_REGOSRESOURCEERR 0x1008
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#define CAPI_REGNOTINSTALLED 0x1009
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#define CAPI_REGCTRLERNOTSUPPORTEXTEQUIP 0x100a
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#define CAPI_REGCTRLERONLYSUPPORTEXTEQUIP 0x100b
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#define CAPI_ILLAPPNR 0x1101
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#define CAPI_ILLCMDORSUBCMDORMSGTOSMALL 0x1102
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#define CAPI_SENDQUEUEFULL 0x1103
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#define CAPI_RECEIVEQUEUEEMPTY 0x1104
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#define CAPI_RECEIVEOVERFLOW 0x1105
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#define CAPI_UNKNOWNNOTPAR 0x1106
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#define CAPI_MSGBUSY 0x1107
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#define CAPI_MSGOSRESOURCEERR 0x1108
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#define CAPI_MSGNOTINSTALLED 0x1109
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#define CAPI_MSGCTRLERNOTSUPPORTEXTEQUIP 0x110a
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#define CAPI_MSGCTRLERONLYSUPPORTEXTEQUIP 0x110b
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typedef enum {
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CapiMessageNotSupportedInCurrentState = 0x2001,
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CapiIllContrPlciNcci = 0x2002,
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CapiNoPlciAvailable = 0x2003,
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CapiNoNcciAvailable = 0x2004,
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CapiNoListenResourcesAvailable = 0x2005,
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CapiNoFaxResourcesAvailable = 0x2006,
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CapiIllMessageParmCoding = 0x2007,
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} RESOURCE_CODING_PROBLEM;
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typedef enum {
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CapiB1ProtocolNotSupported = 0x3001,
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CapiB2ProtocolNotSupported = 0x3002,
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CapiB3ProtocolNotSupported = 0x3003,
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CapiB1ProtocolParameterNotSupported = 0x3004,
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CapiB2ProtocolParameterNotSupported = 0x3005,
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CapiB3ProtocolParameterNotSupported = 0x3006,
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CapiBProtocolCombinationNotSupported = 0x3007,
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CapiNcpiNotSupported = 0x3008,
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CapiCipValueUnknown = 0x3009,
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CapiFlagsNotSupported = 0x300a,
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CapiFacilityNotSupported = 0x300b,
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CapiDataLengthNotSupportedByCurrentProtocol = 0x300c,
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CapiResetProcedureNotSupportedByCurrentProtocol = 0x300d,
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CapiTeiAssignmentFailed = 0x300e,
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} REQUESTED_SERVICES_PROBLEM;
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typedef enum {
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CapiSuccess = 0x0000,
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CapiSupplementaryServiceNotSupported = 0x300e,
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CapiRequestNotAllowedInThisState = 0x3010,
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} SUPPLEMENTARY_SERVICE_INFO;
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typedef enum {
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CapiProtocolErrorLayer1 = 0x3301,
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CapiProtocolErrorLayer2 = 0x3302,
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CapiProtocolErrorLayer3 = 0x3303,
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CapiTimeOut = 0x3303, // SuppServiceReason
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CapiCallGivenToOtherApplication = 0x3304,
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} CAPI_REASON;
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#endif /* __KERNELCAPI_H__ */
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