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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2007-04-17 13:28:32 +08:00
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#define XANBOO 0
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#define BELKIN_VIDEOBUS_II 1
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#define BELKIN_VIDEOBUS 2
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#define BELKIN_USB_VIDEOBUS_II 3
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#define ECHOFX_INTERVIEW_LITE 4
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#define USBGEAR_USBG_V1 5
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#define D_LINK_V100 6
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#define X10_USB_CAMERA 7
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#define HPG_WINTV_LIVE_PAL_BG 8
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#define HPG_WINTV_LIVE_PRO_NTSC_MN 9
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#define ZORAN_PMD_NOGATECH 10
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#define NOGATECH_USB_TV_NTSC_FM 11
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#define PNY_USB_TV_NTSC_FM 12
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#define PV_PLAYTV_USB_PRO_PAL_FM 13
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#define ZT_721 14
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#define HPG_WINTV_NTSC_MN 15
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#define HPG_WINTV_PAL_BG 16
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#define HPG_WINTV_PAL_I 17
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#define HPG_WINTV_PAL_SECAM_L 18
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#define HPG_WINTV_PAL_D_K 19
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#define HPG_WINTV_NTSC_FM 20
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#define HPG_WINTV_PAL_BG_FM 21
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#define HPG_WINTV_PAL_I_FM 22
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#define HPG_WINTV_PAL_D_K_FM 23
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#define HPG_WINTV_PRO_NTSC_MN 24
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#define HPG_WINTV_PRO_NTSC_MN_V2 25
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#define HPG_WINTV_PRO_PAL 26
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#define HPG_WINTV_PRO_NTSC_MN_V3 27
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#define HPG_WINTV_PRO_PAL_BG 28
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#define HPG_WINTV_PRO_PAL_I 29
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#define HPG_WINTV_PRO_PAL_SECAM_L 30
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#define HPG_WINTV_PRO_PAL_D_K 31
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#define HPG_WINTV_PRO_PAL_SECAM 32
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#define HPG_WINTV_PRO_PAL_SECAM_V2 33
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#define HPG_WINTV_PRO_PAL_BG_V2 34
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#define HPG_WINTV_PRO_PAL_BG_D_K 35
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#define HPG_WINTV_PRO_PAL_I_D_K 36
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#define HPG_WINTV_PRO_NTSC_MN_FM 37
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#define HPG_WINTV_PRO_PAL_BG_FM 38
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#define HPG_WINTV_PRO_PAL_I_FM 39
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#define HPG_WINTV_PRO_PAL_D_K_FM 40
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#define HPG_WINTV_PRO_TEMIC_PAL_FM 41
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#define HPG_WINTV_PRO_TEMIC_PAL_BG_FM 42
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#define HPG_WINTV_PRO_PAL_FM 43
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#define HPG_WINTV_PRO_NTSC_MN_FM_V2 44
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#define CAMTEL_TVB330 45
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#define DIGITAL_VIDEO_CREATOR_I 46
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#define GLOBAL_VILLAGE_GV_007_NTSC 47
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#define DAZZLE_DVC_50_REV_1_NTSC 48
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#define DAZZLE_DVC_80_REV_1_PAL 49
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#define DAZZLE_DVC_90_REV_1_SECAM 50
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#define ESKAPE_LABS_MYTV2GO 51
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#define PINNA_PCTV_USB_PAL 52
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#define PINNA_PCTV_USB_SECAM 53
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#define PINNA_PCTV_USB_PAL_FM 54
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#define MIRO_PCTV_USB 55
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#define PINNA_PCTV_USB_NTSC_FM 56
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#define PINNA_PCTV_USB_PAL_FM_V2 57
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#define PINNA_PCTV_USB_NTSC_FM_V2 58
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#define PINNA_PCTV_USB_PAL_FM_V3 59
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#define PINNA_LINX_VD_IN_CAB_NTSC 60
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#define PINNA_LINX_VD_IN_CAB_PAL 61
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#define PINNA_PCTV_BUNGEE_PAL_FM 62
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#define HPG_WINTV 63
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2008-01-10 04:33:53 +08:00
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#define PINNA_PCTV_USB_NTSC_FM_V3 64
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2011-04-28 04:36:05 +08:00
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#define MICROCAM_NTSC 65
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#define MICROCAM_PAL 66
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2007-04-15 02:17:35 +08:00
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extern const int usbvision_device_data_size;
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