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 17:07:57 +03:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2011-03-02 06:20:59 +03:00
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#ifndef __XFS_MESSAGE_H
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#define __XFS_MESSAGE_H 1
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2021-06-28 16:50:06 +03:00
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#include <linux/once_lite.h>
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2011-03-02 06:20:59 +03:00
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struct xfs_mount;
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2011-11-01 04:11:33 +04:00
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extern __printf(2, 3)
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void xfs_emerg(const struct xfs_mount *mp, const char *fmt, ...);
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extern __printf(2, 3)
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void xfs_alert(const struct xfs_mount *mp, const char *fmt, ...);
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extern __printf(3, 4)
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void xfs_alert_tag(const struct xfs_mount *mp, int tag, const char *fmt, ...);
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extern __printf(2, 3)
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void xfs_crit(const struct xfs_mount *mp, const char *fmt, ...);
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extern __printf(2, 3)
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void xfs_err(const struct xfs_mount *mp, const char *fmt, ...);
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extern __printf(2, 3)
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void xfs_warn(const struct xfs_mount *mp, const char *fmt, ...);
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extern __printf(2, 3)
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void xfs_notice(const struct xfs_mount *mp, const char *fmt, ...);
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extern __printf(2, 3)
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void xfs_info(const struct xfs_mount *mp, const char *fmt, ...);
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2011-03-02 06:20:59 +03:00
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#ifdef DEBUG
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2011-11-01 04:11:33 +04:00
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extern __printf(2, 3)
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void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...);
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2011-03-02 06:20:59 +03:00
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#else
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2011-11-01 04:11:33 +04:00
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static inline __printf(2, 3)
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void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...)
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2011-04-02 22:13:40 +04:00
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{
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}
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2011-03-02 06:20:59 +03:00
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#endif
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2020-04-27 21:00:42 +03:00
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#define xfs_printk_ratelimited(func, dev, fmt, ...) \
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2013-03-27 18:26:49 +04:00
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do { \
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static DEFINE_RATELIMIT_STATE(_rs, \
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DEFAULT_RATELIMIT_INTERVAL, \
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DEFAULT_RATELIMIT_BURST); \
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if (__ratelimit(&_rs)) \
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2020-04-27 21:00:42 +03:00
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func(dev, fmt, ##__VA_ARGS__); \
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2013-03-27 18:26:49 +04:00
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} while (0)
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2020-04-27 21:00:42 +03:00
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#define xfs_printk_once(func, dev, fmt, ...) \
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2021-06-28 16:50:06 +03:00
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DO_ONCE_LITE(func, dev, fmt, ##__VA_ARGS__)
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2020-04-27 21:00:42 +03:00
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2013-03-27 18:26:49 +04:00
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#define xfs_emerg_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_emerg, dev, fmt, ##__VA_ARGS__)
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#define xfs_alert_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_alert, dev, fmt, ##__VA_ARGS__)
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#define xfs_crit_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_crit, dev, fmt, ##__VA_ARGS__)
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#define xfs_err_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_err, dev, fmt, ##__VA_ARGS__)
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#define xfs_warn_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_warn, dev, fmt, ##__VA_ARGS__)
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#define xfs_notice_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_notice, dev, fmt, ##__VA_ARGS__)
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#define xfs_info_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_info, dev, fmt, ##__VA_ARGS__)
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#define xfs_debug_ratelimited(dev, fmt, ...) \
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xfs_printk_ratelimited(xfs_debug, dev, fmt, ##__VA_ARGS__)
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2020-04-27 21:00:42 +03:00
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#define xfs_warn_once(dev, fmt, ...) \
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xfs_printk_once(xfs_warn, dev, fmt, ##__VA_ARGS__)
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#define xfs_notice_once(dev, fmt, ...) \
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xfs_printk_once(xfs_notice, dev, fmt, ##__VA_ARGS__)
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xfs: validate extsz hints against rt extent size when rtinherit is set
The RTINHERIT bit can be set on a directory so that newly created
regular files will have the REALTIME bit set to store their data on the
realtime volume. If an extent size hint (and EXTSZINHERIT) are set on
the directory, the hint will also be copied into the new file.
As pointed out in previous patches, for realtime files we require the
extent size hint be an integer multiple of the realtime extent, but we
don't perform the same validation on a directory with both RTINHERIT and
EXTSZINHERIT set, even though the only use-case of that combination is
to propagate extent size hints into new realtime files. This leads to
inode corruption errors when the bad values are propagated.
Because there may be existing filesystems with such a configuration, we
cannot simply amend the inode verifier to trip on these directories and
call it a day because that will cause previously "working" filesystems
to start throwing errors abruptly. Note that it's valid to have
directories with rtinherit set even if there is no realtime volume, in
which case the problem does not manifest because rtinherit is ignored if
there's no realtime device; and it's possible that someone set the flag,
crashed, repaired the filesystem (which clears the hint on the realtime
file) and continued.
Therefore, mitigate this issue in several ways: First, if we try to
write out an inode with both rtinherit/extszinherit set and an unaligned
extent size hint, turn off the hint to correct the error. Second, if
someone tries to misconfigure a directory via the fssetxattr ioctl, fail
the ioctl. Third, reverify both extent size hint values when we
propagate heritable inode attributes from parent to child, to prevent
misconfigurations from spreading.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
2021-05-12 22:51:26 +03:00
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#define xfs_info_once(dev, fmt, ...) \
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xfs_printk_once(xfs_info, dev, fmt, ##__VA_ARGS__)
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2020-04-27 21:00:42 +03:00
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2019-11-02 19:41:19 +03:00
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void assfail(struct xfs_mount *mp, char *expr, char *f, int l);
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void asswarn(struct xfs_mount *mp, char *expr, char *f, int l);
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2011-03-07 02:09:35 +03:00
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2019-11-02 19:40:36 +03:00
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extern void xfs_hex_dump(const void *p, int length);
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2011-03-07 02:09:35 +03:00
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2020-05-06 23:25:21 +03:00
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void xfs_buf_alert_ratelimited(struct xfs_buf *bp, const char *rlmsg,
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const char *fmt, ...);
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2011-03-02 06:20:59 +03:00
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#endif /* __XFS_MESSAGE_H */
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