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b24413180f
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>
96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _HVSI_H
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#define _HVSI_H
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#define VS_DATA_PACKET_HEADER 0xff
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#define VS_CONTROL_PACKET_HEADER 0xfe
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#define VS_QUERY_PACKET_HEADER 0xfd
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#define VS_QUERY_RESPONSE_PACKET_HEADER 0xfc
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/* control verbs */
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#define VSV_SET_MODEM_CTL 1 /* to service processor only */
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#define VSV_MODEM_CTL_UPDATE 2 /* from service processor only */
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#define VSV_CLOSE_PROTOCOL 3
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/* query verbs */
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#define VSV_SEND_VERSION_NUMBER 1
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#define VSV_SEND_MODEM_CTL_STATUS 2
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/* yes, these masks are not consecutive. */
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#define HVSI_TSDTR 0x01
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#define HVSI_TSCD 0x20
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#define HVSI_MAX_OUTGOING_DATA 12
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#define HVSI_VERSION 1
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struct hvsi_header {
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uint8_t type;
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uint8_t len;
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__be16 seqno;
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} __attribute__((packed));
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struct hvsi_data {
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struct hvsi_header hdr;
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uint8_t data[HVSI_MAX_OUTGOING_DATA];
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} __attribute__((packed));
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struct hvsi_control {
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struct hvsi_header hdr;
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__be16 verb;
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/* optional depending on verb: */
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__be32 word;
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__be32 mask;
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} __attribute__((packed));
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struct hvsi_query {
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struct hvsi_header hdr;
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__be16 verb;
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} __attribute__((packed));
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struct hvsi_query_response {
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struct hvsi_header hdr;
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__be16 verb;
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__be16 query_seqno;
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union {
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uint8_t version;
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__be32 mctrl_word;
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} u;
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} __attribute__((packed));
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/* hvsi lib struct definitions */
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#define HVSI_INBUF_SIZE 255
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struct tty_struct;
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struct hvsi_priv {
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unsigned int inbuf_len; /* data in input buffer */
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unsigned char inbuf[HVSI_INBUF_SIZE];
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unsigned int inbuf_cur; /* Cursor in input buffer */
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unsigned int inbuf_pktlen; /* packet lenght from cursor */
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atomic_t seqno; /* packet sequence number */
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unsigned int opened:1; /* driver opened */
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unsigned int established:1; /* protocol established */
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unsigned int is_console:1; /* used as a kernel console device */
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unsigned int mctrl_update:1; /* modem control updated */
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unsigned short mctrl; /* modem control */
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struct tty_struct *tty; /* tty structure */
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int (*get_chars)(uint32_t termno, char *buf, int count);
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int (*put_chars)(uint32_t termno, const char *buf, int count);
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uint32_t termno;
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};
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/* hvsi lib functions */
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struct hvc_struct;
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extern void hvsilib_init(struct hvsi_priv *pv,
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int (*get_chars)(uint32_t termno, char *buf, int count),
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int (*put_chars)(uint32_t termno, const char *buf,
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int count),
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int termno, int is_console);
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extern int hvsilib_open(struct hvsi_priv *pv, struct hvc_struct *hp);
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extern void hvsilib_close(struct hvsi_priv *pv, struct hvc_struct *hp);
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extern int hvsilib_read_mctrl(struct hvsi_priv *pv);
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extern int hvsilib_write_mctrl(struct hvsi_priv *pv, int dtr);
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extern void hvsilib_establish(struct hvsi_priv *pv);
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extern int hvsilib_get_chars(struct hvsi_priv *pv, char *buf, int count);
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extern int hvsilib_put_chars(struct hvsi_priv *pv, const char *buf, int count);
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#endif /* _HVSI_H */
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