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![Greg Kroah-Hartman](/assets/img/avatar_default.png)
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>
175 lines
3.7 KiB
C
175 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* tape device discipline for 3590 tapes.
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*
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* Copyright IBM Corp. 2001, 2006
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* Author(s): Stefan Bader <shbader@de.ibm.com>
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* Michael Holzheu <holzheu@de.ibm.com>
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* Martin Schwidefsky <schwidefsky@de.ibm.com>
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*/
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#ifndef _TAPE_3590_H
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#define _TAPE_3590_H
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#define MEDIUM_SENSE 0xc2
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#define READ_PREVIOUS 0x0a
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#define MODE_SENSE 0xcf
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#define PERFORM_SS_FUNC 0x77
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#define READ_SS_DATA 0x3e
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#define PREP_RD_SS_DATA 0x18
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#define RD_ATTMSG 0x3
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#define SENSE_BRA_PER 0
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#define SENSE_BRA_CONT 1
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#define SENSE_BRA_RE 2
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#define SENSE_BRA_DRE 3
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#define SENSE_FMT_LIBRARY 0x23
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#define SENSE_FMT_UNSOLICITED 0x40
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#define SENSE_FMT_COMMAND_REJ 0x41
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#define SENSE_FMT_COMMAND_EXEC0 0x50
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#define SENSE_FMT_COMMAND_EXEC1 0x51
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#define SENSE_FMT_EVENT0 0x60
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#define SENSE_FMT_EVENT1 0x61
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#define SENSE_FMT_MIM 0x70
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#define SENSE_FMT_SIM 0x71
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#define MSENSE_UNASSOCIATED 0x00
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#define MSENSE_ASSOCIATED_MOUNT 0x01
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#define MSENSE_ASSOCIATED_UMOUNT 0x02
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#define MSENSE_CRYPT_MASK 0x00000010
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#define TAPE_3590_MAX_MSG 0xb0
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/* Datatypes */
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struct tape_3590_disc_data {
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struct tape390_crypt_info crypt_info;
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int read_back_op;
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};
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#define TAPE_3590_CRYPT_INFO(device) \
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((struct tape_3590_disc_data*)(device->discdata))->crypt_info
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#define TAPE_3590_READ_BACK_OP(device) \
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((struct tape_3590_disc_data*)(device->discdata))->read_back_op
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struct tape_3590_sense {
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unsigned int command_rej:1;
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unsigned int interv_req:1;
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unsigned int bus_out_check:1;
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unsigned int eq_check:1;
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unsigned int data_check:1;
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unsigned int overrun:1;
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unsigned int def_unit_check:1;
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unsigned int assgnd_elsew:1;
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unsigned int locate_fail:1;
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unsigned int inst_online:1;
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unsigned int reserved:1;
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unsigned int blk_seq_err:1;
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unsigned int begin_part:1;
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unsigned int wr_mode:1;
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unsigned int wr_prot:1;
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unsigned int not_cap:1;
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unsigned int bra:2;
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unsigned int lc:3;
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unsigned int vlf_active:1;
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unsigned int stm:1;
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unsigned int med_pos:1;
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unsigned int rac:8;
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unsigned int rc_rqc:16;
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unsigned int mc:8;
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unsigned int sense_fmt:8;
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union {
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struct {
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unsigned int emc:4;
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unsigned int smc:4;
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unsigned int sev:2;
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unsigned int reserved:6;
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unsigned int md:8;
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unsigned int refcode:8;
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unsigned int mid:16;
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unsigned int mp:16;
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unsigned char volid[6];
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unsigned int fid:8;
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} f70;
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struct {
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unsigned int emc:4;
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unsigned int smc:4;
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unsigned int sev:2;
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unsigned int reserved1:5;
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unsigned int mdf:1;
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unsigned char md[3];
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unsigned int simid:8;
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unsigned int uid:16;
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unsigned int refcode1:16;
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unsigned int refcode2:16;
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unsigned int refcode3:16;
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unsigned int reserved2:8;
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} f71;
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unsigned char data[14];
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} fmt;
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unsigned char pad[10];
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} __attribute__ ((packed));
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struct tape_3590_med_sense {
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unsigned int macst:4;
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unsigned int masst:4;
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char pad1[7];
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unsigned int flags;
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char pad2[116];
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} __attribute__ ((packed));
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struct tape_3590_rdc_data {
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char data[64];
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} __attribute__ ((packed));
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/* Datastructures for 3592 encryption support */
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struct tape3592_kekl {
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__u8 flags;
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char label[64];
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} __attribute__ ((packed));
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struct tape3592_kekl_pair {
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__u8 count;
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struct tape3592_kekl kekl[2];
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} __attribute__ ((packed));
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struct tape3592_kekl_query_data {
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__u16 len;
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__u8 fmt;
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__u8 mc;
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__u32 id;
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__u8 flags;
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struct tape3592_kekl_pair kekls;
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char reserved[116];
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} __attribute__ ((packed));
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struct tape3592_kekl_query_order {
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__u8 code;
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__u8 flags;
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char reserved1[2];
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__u8 max_count;
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char reserved2[35];
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} __attribute__ ((packed));
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struct tape3592_kekl_set_order {
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__u8 code;
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__u8 flags;
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char reserved1[2];
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__u8 op;
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struct tape3592_kekl_pair kekls;
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char reserved2[120];
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} __attribute__ ((packed));
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#endif /* _TAPE_3590_H */
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