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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2012-02-17 12:59:20 +08:00
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/*
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* Name : qnx6_fs.h
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* Author : Kai Bankett
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* Function : qnx6 global filesystem definitions
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* History : 17-01-2012 created
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*/
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#ifndef _LINUX_QNX6_FS_H
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#define _LINUX_QNX6_FS_H
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#include <linux/types.h>
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#include <linux/magic.h>
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#define QNX6_ROOT_INO 1
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/* for di_status */
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#define QNX6_FILE_DIRECTORY 0x01
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#define QNX6_FILE_DELETED 0x02
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#define QNX6_FILE_NORMAL 0x03
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#define QNX6_SUPERBLOCK_SIZE 0x200 /* superblock always is 512 bytes */
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#define QNX6_SUPERBLOCK_AREA 0x1000 /* area reserved for superblock */
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#define QNX6_BOOTBLOCK_SIZE 0x2000 /* heading bootblock area */
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#define QNX6_DIR_ENTRY_SIZE 0x20 /* dir entry size of 32 bytes */
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#define QNX6_INODE_SIZE 0x80 /* each inode is 128 bytes */
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#define QNX6_INODE_SIZE_BITS 7 /* inode entry size shift */
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#define QNX6_NO_DIRECT_POINTERS 16 /* 16 blockptrs in sbl/inode */
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#define QNX6_PTR_MAX_LEVELS 5 /* maximum indirect levels */
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/* for filenames */
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#define QNX6_SHORT_NAME_MAX 27
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#define QNX6_LONG_NAME_MAX 510
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/* list of mount options */
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#define QNX6_MOUNT_MMI_FS 0x010000 /* mount as Audi MMI 3G fs */
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/*
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* This is the original qnx6 inode layout on disk.
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* Each inode is 128 byte long.
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*/
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struct qnx6_inode_entry {
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__fs64 di_size;
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__fs32 di_uid;
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__fs32 di_gid;
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__fs32 di_ftime;
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__fs32 di_mtime;
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__fs32 di_atime;
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__fs32 di_ctime;
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__fs16 di_mode;
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__fs16 di_ext_mode;
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__fs32 di_block_ptr[QNX6_NO_DIRECT_POINTERS];
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__u8 di_filelevels;
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__u8 di_status;
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__u8 di_unknown2[2];
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__fs32 di_zero2[6];
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};
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/*
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* Each directory entry is maximum 32 bytes long.
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* If more characters or special characters required it is stored
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* in the longfilenames structure.
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*/
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struct qnx6_dir_entry {
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__fs32 de_inode;
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__u8 de_size;
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char de_fname[QNX6_SHORT_NAME_MAX];
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};
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/*
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* Longfilename direntries have a different structure
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*/
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struct qnx6_long_dir_entry {
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__fs32 de_inode;
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__u8 de_size;
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__u8 de_unknown[3];
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__fs32 de_long_inode;
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__fs32 de_checksum;
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};
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struct qnx6_long_filename {
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__fs16 lf_size;
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__u8 lf_fname[QNX6_LONG_NAME_MAX];
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};
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struct qnx6_root_node {
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__fs64 size;
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__fs32 ptr[QNX6_NO_DIRECT_POINTERS];
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__u8 levels;
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__u8 mode;
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__u8 spare[6];
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};
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struct qnx6_super_block {
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__fs32 sb_magic;
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__fs32 sb_checksum;
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__fs64 sb_serial;
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__fs32 sb_ctime; /* time the fs was created */
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__fs32 sb_atime; /* last access time */
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__fs32 sb_flags;
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__fs16 sb_version1; /* filesystem version information */
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__fs16 sb_version2; /* filesystem version information */
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__u8 sb_volumeid[16];
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__fs32 sb_blocksize;
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__fs32 sb_num_inodes;
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__fs32 sb_free_inodes;
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__fs32 sb_num_blocks;
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__fs32 sb_free_blocks;
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__fs32 sb_allocgroup;
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struct qnx6_root_node Inode;
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struct qnx6_root_node Bitmap;
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struct qnx6_root_node Longfile;
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struct qnx6_root_node Unknown;
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};
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/* Audi MMI 3G superblock layout is different to plain qnx6 */
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struct qnx6_mmi_super_block {
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__fs32 sb_magic;
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__fs32 sb_checksum;
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__fs64 sb_serial;
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__u8 sb_spare0[12];
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__u8 sb_id[12];
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__fs32 sb_blocksize;
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__fs32 sb_num_inodes;
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__fs32 sb_free_inodes;
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__fs32 sb_num_blocks;
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__fs32 sb_free_blocks;
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__u8 sb_spare1[4];
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struct qnx6_root_node Inode;
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struct qnx6_root_node Bitmap;
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struct qnx6_root_node Longfile;
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struct qnx6_root_node Unknown;
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};
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#endif
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