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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>
116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
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*/
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#ifndef NFSD_EXPORT_H
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#define NFSD_EXPORT_H
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#include <linux/sunrpc/cache.h>
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#include <uapi/linux/nfsd/export.h>
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#include <linux/nfs4.h>
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struct knfsd_fh;
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struct svc_fh;
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struct svc_rqst;
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/*
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* FS Locations
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*/
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#define MAX_FS_LOCATIONS 128
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struct nfsd4_fs_location {
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char *hosts; /* colon separated list of hosts */
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char *path; /* slash separated list of path components */
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};
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struct nfsd4_fs_locations {
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uint32_t locations_count;
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struct nfsd4_fs_location *locations;
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/* If we're not actually serving this data ourselves (only providing a
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* list of replicas that do serve it) then we set "migrated": */
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int migrated;
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};
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/*
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* We keep an array of pseudoflavors with the export, in order from most
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* to least preferred. For the foreseeable future, we don't expect more
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* than the eight pseudoflavors null, unix, krb5, krb5i, krb5p, skpm3,
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* spkm3i, and spkm3p (and using all 8 at once should be rare).
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*/
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#define MAX_SECINFO_LIST 8
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#define EX_UUID_LEN 16
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struct exp_flavor_info {
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u32 pseudoflavor;
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u32 flags;
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};
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struct svc_export {
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struct cache_head h;
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struct auth_domain * ex_client;
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int ex_flags;
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struct path ex_path;
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kuid_t ex_anon_uid;
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kgid_t ex_anon_gid;
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int ex_fsid;
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unsigned char * ex_uuid; /* 16 byte fsid */
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struct nfsd4_fs_locations ex_fslocs;
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uint32_t ex_nflavors;
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struct exp_flavor_info ex_flavors[MAX_SECINFO_LIST];
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u32 ex_layout_types;
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struct nfsd4_deviceid_map *ex_devid_map;
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struct cache_detail *cd;
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};
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/* an "export key" (expkey) maps a filehandlefragement to an
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* svc_export for a given client. There can be several per export,
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* for the different fsid types.
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*/
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struct svc_expkey {
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struct cache_head h;
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struct auth_domain * ek_client;
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int ek_fsidtype;
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u32 ek_fsid[6];
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struct path ek_path;
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};
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#define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC))
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#define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE)
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#define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
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int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp);
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__be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp);
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/*
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* Function declarations
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*/
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int nfsd_export_init(struct net *);
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void nfsd_export_shutdown(struct net *);
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void nfsd_export_flush(struct net *);
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struct svc_export * rqst_exp_get_by_name(struct svc_rqst *,
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struct path *);
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struct svc_export * rqst_exp_parent(struct svc_rqst *,
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struct path *);
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struct svc_export * rqst_find_fsidzero_export(struct svc_rqst *);
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int exp_rootfh(struct net *, struct auth_domain *,
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char *path, struct knfsd_fh *, int maxsize);
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__be32 exp_pseudoroot(struct svc_rqst *, struct svc_fh *);
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__be32 nfserrno(int errno);
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static inline void exp_put(struct svc_export *exp)
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{
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cache_put(&exp->h, exp->cd);
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}
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static inline struct svc_export *exp_get(struct svc_export *exp)
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{
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cache_get(&exp->h);
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return exp;
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}
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struct svc_export * rqst_exp_find(struct svc_rqst *, int, u32 *);
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#endif /* NFSD_EXPORT_H */
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