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 14:07:57 +00:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2005-04-16 22:20:36 +00:00
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#ifndef AMIGAFFS_H
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#define AMIGAFFS_H
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#include <linux/types.h>
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#include <asm/byteorder.h>
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#define FS_OFS 0x444F5300
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#define FS_FFS 0x444F5301
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#define FS_INTLOFS 0x444F5302
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#define FS_INTLFFS 0x444F5303
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#define FS_DCOFS 0x444F5304
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#define FS_DCFFS 0x444F5305
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#define MUFS_FS 0x6d754653 /* 'muFS' */
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#define MUFS_OFS 0x6d754600 /* 'muF\0' */
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#define MUFS_FFS 0x6d754601 /* 'muF\1' */
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#define MUFS_INTLOFS 0x6d754602 /* 'muF\2' */
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#define MUFS_INTLFFS 0x6d754603 /* 'muF\3' */
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#define MUFS_DCOFS 0x6d754604 /* 'muF\4' */
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#define MUFS_DCFFS 0x6d754605 /* 'muF\5' */
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#define T_SHORT 2
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#define T_LIST 16
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#define T_DATA 8
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#define ST_LINKFILE -4
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#define ST_FILE -3
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#define ST_ROOT 1
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#define ST_USERDIR 2
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#define ST_SOFTLINK 3
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#define ST_LINKDIR 4
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#define AFFS_ROOT_BMAPS 25
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struct affs_date {
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__be32 days;
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__be32 mins;
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__be32 ticks;
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};
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struct affs_short_date {
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__be16 days;
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__be16 mins;
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__be16 ticks;
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};
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struct affs_root_head {
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__be32 ptype;
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__be32 spare1;
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__be32 spare2;
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__be32 hash_size;
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__be32 spare3;
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__be32 checksum;
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__be32 hashtable[1];
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};
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struct affs_root_tail {
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__be32 bm_flag;
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__be32 bm_blk[AFFS_ROOT_BMAPS];
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__be32 bm_ext;
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struct affs_date root_change;
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u8 disk_name[32];
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__be32 spare1;
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__be32 spare2;
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struct affs_date disk_change;
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struct affs_date disk_create;
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__be32 spare3;
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__be32 spare4;
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__be32 dcache;
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__be32 stype;
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};
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struct affs_head {
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__be32 ptype;
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__be32 key;
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__be32 block_count;
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__be32 spare1;
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__be32 first_data;
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__be32 checksum;
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__be32 table[1];
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};
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struct affs_tail {
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__be32 spare1;
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__be16 uid;
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__be16 gid;
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__be32 protect;
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__be32 size;
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u8 comment[92];
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struct affs_date change;
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u8 name[32];
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__be32 spare2;
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__be32 original;
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__be32 link_chain;
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__be32 spare[5];
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__be32 hash_chain;
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__be32 parent;
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__be32 extension;
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__be32 stype;
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};
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struct slink_front
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{
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__be32 ptype;
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__be32 key;
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__be32 spare1[3];
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__be32 checksum;
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u8 symname[1]; /* depends on block size */
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};
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struct affs_data_head
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{
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__be32 ptype;
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__be32 key;
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__be32 sequence;
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__be32 size;
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__be32 next;
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__be32 checksum;
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u8 data[1]; /* depends on block size */
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};
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/* Permission bits */
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#define FIBF_OTR_READ 0x8000
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#define FIBF_OTR_WRITE 0x4000
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#define FIBF_OTR_EXECUTE 0x2000
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#define FIBF_OTR_DELETE 0x1000
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#define FIBF_GRP_READ 0x0800
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#define FIBF_GRP_WRITE 0x0400
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#define FIBF_GRP_EXECUTE 0x0200
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#define FIBF_GRP_DELETE 0x0100
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#define FIBF_HIDDEN 0x0080
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#define FIBF_SCRIPT 0x0040
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#define FIBF_PURE 0x0020 /* no use under linux */
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#define FIBF_ARCHIVED 0x0010 /* never set, always cleared on write */
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#define FIBF_NOREAD 0x0008 /* 0 means allowed */
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#define FIBF_NOWRITE 0x0004 /* 0 means allowed */
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#define FIBF_NOEXECUTE 0x0002 /* 0 means allowed, ignored under linux */
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#define FIBF_NODELETE 0x0001 /* 0 means allowed */
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#define FIBF_OWNER 0x000F /* Bits pertaining to owner */
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#define FIBF_MASK 0xEE0E /* Bits modified by Linux */
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#endif
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