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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2011-11-16 22:46:48 +08:00
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#ifndef TARGET_CORE_BACKEND_H
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#define TARGET_CORE_BACKEND_H
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2016-11-15 07:47:14 +08:00
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#include <linux/types.h>
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2017-05-24 07:48:27 +08:00
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#include <asm/unaligned.h>
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2016-11-15 07:47:14 +08:00
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#include <target/target_core_base.h>
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2017-03-02 13:13:24 +08:00
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#define TRANSPORT_FLAG_PASSTHROUGH 0x1
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/*
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* ALUA commands, state checks and setup operations are handled by the
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* backend module.
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*/
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#define TRANSPORT_FLAG_PASSTHROUGH_ALUA 0x2
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2017-04-22 09:40:50 +08:00
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#define TRANSPORT_FLAG_PASSTHROUGH_PGR 0x4
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2011-11-16 22:46:48 +08:00
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2016-11-15 07:47:14 +08:00
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struct request_queue;
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struct scatterlist;
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2015-05-11 00:14:56 +08:00
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struct target_backend_ops {
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2011-11-16 22:46:48 +08:00
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char name[16];
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2012-10-08 12:03:19 +08:00
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char inquiry_prod[16];
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char inquiry_rev[4];
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2011-11-16 22:46:48 +08:00
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struct module *owner;
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2015-05-20 05:44:41 +08:00
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u8 transport_flags;
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2011-11-16 22:46:48 +08:00
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int (*attach_hba)(struct se_hba *, u32);
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void (*detach_hba)(struct se_hba *);
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int (*pmode_enable_hba)(struct se_hba *, unsigned long);
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2012-10-08 12:03:19 +08:00
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struct se_device *(*alloc_device)(struct se_hba *, const char *);
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int (*configure_device)(struct se_device *);
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2017-06-23 14:18:12 +08:00
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void (*destroy_device)(struct se_device *);
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2012-10-08 12:03:19 +08:00
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void (*free_device)(struct se_device *device);
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ssize_t (*set_configfs_dev_params)(struct se_device *,
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const char *, ssize_t);
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ssize_t (*show_configfs_dev_params)(struct se_device *, char *);
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2012-11-07 04:24:09 +08:00
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sense_reason_t (*parse_cdb)(struct se_cmd *cmd);
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2011-11-16 22:46:48 +08:00
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u32 (*get_device_type)(struct se_device *);
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sector_t (*get_blocks)(struct se_device *);
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2013-11-12 00:59:17 +08:00
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sector_t (*get_alignment_offset_lbas)(struct se_device *);
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/* lbppbe = logical blocks per physical block exponent. see SBC-3 */
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unsigned int (*get_lbppbe)(struct se_device *);
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unsigned int (*get_io_min)(struct se_device *);
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unsigned int (*get_io_opt)(struct se_device *);
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2012-04-24 12:25:06 +08:00
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unsigned char *(*get_sense_buffer)(struct se_cmd *);
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2013-01-30 14:10:06 +08:00
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bool (*get_write_cache)(struct se_device *);
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2013-12-24 04:28:13 +08:00
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int (*init_prot)(struct se_device *);
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int (*format_prot)(struct se_device *);
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void (*free_prot)(struct se_device *);
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2014-11-28 05:59:20 +08:00
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2015-05-11 00:14:56 +08:00
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struct configfs_attribute **tb_dev_attrib_attrs;
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2017-12-19 18:03:57 +08:00
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struct configfs_attribute **tb_dev_action_attrs;
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2011-11-16 22:46:48 +08:00
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};
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2012-10-07 22:55:50 +08:00
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struct sbc_ops {
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2013-08-20 14:57:30 +08:00
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sense_reason_t (*execute_rw)(struct se_cmd *cmd, struct scatterlist *,
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u32, enum dma_data_direction);
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2012-11-07 04:24:09 +08:00
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sense_reason_t (*execute_sync_cache)(struct se_cmd *cmd);
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sense_reason_t (*execute_write_same)(struct se_cmd *cmd);
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2015-06-19 21:10:59 +08:00
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sense_reason_t (*execute_unmap)(struct se_cmd *cmd,
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sector_t lba, sector_t nolb);
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2012-06-18 06:40:52 +08:00
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};
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2015-05-11 00:14:56 +08:00
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int transport_backend_register(const struct target_backend_ops *);
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void target_backend_unregister(const struct target_backend_ops *);
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2011-11-16 22:46:48 +08:00
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2012-04-23 23:35:33 +08:00
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void target_complete_cmd(struct se_cmd *, u8);
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2014-06-11 02:07:47 +08:00
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void target_complete_cmd_with_length(struct se_cmd *, u8, int);
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2011-11-16 22:46:48 +08:00
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2017-06-01 04:52:39 +08:00
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void transport_copy_sense_to_cmd(struct se_cmd *, unsigned char *);
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2012-11-07 04:24:09 +08:00
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sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
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sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd);
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2012-12-17 16:53:35 +08:00
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sense_reason_t spc_emulate_inquiry_std(struct se_cmd *, unsigned char *);
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sense_reason_t spc_emulate_evpd_83(struct se_cmd *, unsigned char *);
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2012-05-20 23:59:14 +08:00
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2012-11-07 04:24:09 +08:00
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sense_reason_t sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops);
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2012-10-07 22:55:53 +08:00
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u32 sbc_get_device_rev(struct se_device *dev);
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u32 sbc_get_device_type(struct se_device *dev);
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2013-02-23 01:52:57 +08:00
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sector_t sbc_get_write_same_sectors(struct se_cmd *cmd);
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2014-04-03 05:19:09 +08:00
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void sbc_dif_generate(struct se_cmd *);
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2015-04-20 01:27:19 +08:00
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sense_reason_t sbc_dif_verify(struct se_cmd *, sector_t, unsigned int,
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2014-01-08 06:44:57 +08:00
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unsigned int, struct scatterlist *, int);
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2015-04-20 01:27:19 +08:00
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void sbc_dif_copy_prot(struct se_cmd *, unsigned int, bool,
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struct scatterlist *, int);
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2011-11-16 22:46:48 +08:00
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void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
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int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
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int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
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int transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
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2015-05-11 00:14:57 +08:00
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extern struct configfs_attribute *sbc_attrib_attrs[];
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extern struct configfs_attribute *passthrough_attrib_attrs[];
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2011-11-16 22:46:48 +08:00
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/* core helpers also used by command snooping in pscsi */
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2012-01-17 08:57:08 +08:00
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void *transport_kmap_data_sg(struct se_cmd *);
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void transport_kunmap_data_sg(struct se_cmd *);
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2013-08-23 02:58:43 +08:00
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/* core helpers also used by xcopy during internal command setup */
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sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *,
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struct scatterlist *, u32, struct scatterlist *, u32);
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2011-11-16 22:46:48 +08:00
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2015-03-23 11:42:19 +08:00
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bool target_lun_is_rdonly(struct se_cmd *);
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2015-05-20 05:44:40 +08:00
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sense_reason_t passthrough_parse_cdb(struct se_cmd *cmd,
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sense_reason_t (*exec_cmd)(struct se_cmd *cmd));
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2014-11-28 11:15:48 +08:00
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2015-07-16 15:28:05 +08:00
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bool target_sense_desc_format(struct se_device *dev);
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2016-01-19 04:09:27 +08:00
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sector_t target_to_linux_sector(struct se_device *dev, sector_t lb);
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bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib,
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2016-06-03 09:12:37 +08:00
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struct request_queue *q);
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2015-07-16 15:28:05 +08:00
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2018-07-24 03:07:45 +08:00
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static inline bool target_dev_configured(struct se_device *se_dev)
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{
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return !!(se_dev->dev_flags & DF_CONFIGURED);
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}
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2017-05-24 07:48:27 +08:00
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/* Only use get_unaligned_be24() if reading p - 1 is allowed. */
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static inline uint32_t get_unaligned_be24(const uint8_t *const p)
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{
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return get_unaligned_be32(p - 1) & 0xffffffU;
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}
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2011-11-16 22:46:48 +08:00
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#endif /* TARGET_CORE_BACKEND_H */
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