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>
391 lines
10 KiB
C
391 lines
10 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Definitions for diskquota-operations. When diskquota is configured these
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* macros expand to the right source-code.
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*
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* Author: Marco van Wieringen <mvw@planets.elm.net>
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*/
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#ifndef _LINUX_QUOTAOPS_
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#define _LINUX_QUOTAOPS_
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#include <linux/fs.h>
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#define DQUOT_SPACE_WARN 0x1
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#define DQUOT_SPACE_RESERVE 0x2
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#define DQUOT_SPACE_NOFAIL 0x4
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static inline struct quota_info *sb_dqopt(struct super_block *sb)
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{
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return &sb->s_dquot;
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}
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/* i_mutex must being held */
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static inline bool is_quota_modification(struct inode *inode, struct iattr *ia)
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{
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return (ia->ia_valid & ATTR_SIZE && ia->ia_size != inode->i_size) ||
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(ia->ia_valid & ATTR_UID && !uid_eq(ia->ia_uid, inode->i_uid)) ||
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(ia->ia_valid & ATTR_GID && !gid_eq(ia->ia_gid, inode->i_gid));
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}
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#if defined(CONFIG_QUOTA)
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#define quota_error(sb, fmt, args...) \
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__quota_error((sb), __func__, fmt , ## args)
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extern __printf(3, 4)
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void __quota_error(struct super_block *sb, const char *func,
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const char *fmt, ...);
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/*
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* declaration of quota_function calls in kernel.
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*/
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int dquot_initialize(struct inode *inode);
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bool dquot_initialize_needed(struct inode *inode);
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void dquot_drop(struct inode *inode);
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struct dquot *dqget(struct super_block *sb, struct kqid qid);
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static inline struct dquot *dqgrab(struct dquot *dquot)
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{
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/* Make sure someone else has active reference to dquot */
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WARN_ON_ONCE(!atomic_read(&dquot->dq_count));
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WARN_ON_ONCE(!test_bit(DQ_ACTIVE_B, &dquot->dq_flags));
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atomic_inc(&dquot->dq_count);
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return dquot;
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}
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void dqput(struct dquot *dquot);
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int dquot_scan_active(struct super_block *sb,
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int (*fn)(struct dquot *dquot, unsigned long priv),
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unsigned long priv);
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struct dquot *dquot_alloc(struct super_block *sb, int type);
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void dquot_destroy(struct dquot *dquot);
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int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags);
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void __dquot_free_space(struct inode *inode, qsize_t number, int flags);
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int dquot_alloc_inode(struct inode *inode);
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int dquot_claim_space_nodirty(struct inode *inode, qsize_t number);
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void dquot_free_inode(struct inode *inode);
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void dquot_reclaim_space_nodirty(struct inode *inode, qsize_t number);
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int dquot_disable(struct super_block *sb, int type, unsigned int flags);
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/* Suspend quotas on remount RO */
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static inline int dquot_suspend(struct super_block *sb, int type)
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{
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return dquot_disable(sb, type, DQUOT_SUSPENDED);
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}
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int dquot_resume(struct super_block *sb, int type);
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int dquot_commit(struct dquot *dquot);
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int dquot_acquire(struct dquot *dquot);
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int dquot_release(struct dquot *dquot);
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int dquot_commit_info(struct super_block *sb, int type);
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int dquot_get_next_id(struct super_block *sb, struct kqid *qid);
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int dquot_mark_dquot_dirty(struct dquot *dquot);
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int dquot_file_open(struct inode *inode, struct file *file);
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int dquot_enable(struct inode *inode, int type, int format_id,
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unsigned int flags);
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int dquot_quota_on(struct super_block *sb, int type, int format_id,
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const struct path *path);
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int dquot_quota_on_mount(struct super_block *sb, char *qf_name,
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int format_id, int type);
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int dquot_quota_off(struct super_block *sb, int type);
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int dquot_writeback_dquots(struct super_block *sb, int type);
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int dquot_quota_sync(struct super_block *sb, int type);
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int dquot_get_state(struct super_block *sb, struct qc_state *state);
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int dquot_set_dqinfo(struct super_block *sb, int type, struct qc_info *ii);
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int dquot_get_dqblk(struct super_block *sb, struct kqid id,
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struct qc_dqblk *di);
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int dquot_get_next_dqblk(struct super_block *sb, struct kqid *id,
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struct qc_dqblk *di);
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int dquot_set_dqblk(struct super_block *sb, struct kqid id,
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struct qc_dqblk *di);
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int __dquot_transfer(struct inode *inode, struct dquot **transfer_to);
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int dquot_transfer(struct inode *inode, struct iattr *iattr);
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static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type)
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{
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return sb_dqopt(sb)->info + type;
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}
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/*
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* Functions for checking status of quota
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*/
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static inline bool sb_has_quota_usage_enabled(struct super_block *sb, int type)
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{
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return sb_dqopt(sb)->flags &
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dquot_state_flag(DQUOT_USAGE_ENABLED, type);
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}
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static inline bool sb_has_quota_limits_enabled(struct super_block *sb, int type)
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{
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return sb_dqopt(sb)->flags &
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dquot_state_flag(DQUOT_LIMITS_ENABLED, type);
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}
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static inline bool sb_has_quota_suspended(struct super_block *sb, int type)
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{
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return sb_dqopt(sb)->flags &
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dquot_state_flag(DQUOT_SUSPENDED, type);
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}
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static inline unsigned sb_any_quota_suspended(struct super_block *sb)
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{
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return dquot_state_types(sb_dqopt(sb)->flags, DQUOT_SUSPENDED);
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}
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/* Does kernel know about any quota information for given sb + type? */
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static inline bool sb_has_quota_loaded(struct super_block *sb, int type)
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{
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/* Currently if anything is on, then quota usage is on as well */
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return sb_has_quota_usage_enabled(sb, type);
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}
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static inline unsigned sb_any_quota_loaded(struct super_block *sb)
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{
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return dquot_state_types(sb_dqopt(sb)->flags, DQUOT_USAGE_ENABLED);
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}
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static inline bool sb_has_quota_active(struct super_block *sb, int type)
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{
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return sb_has_quota_loaded(sb, type) &&
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!sb_has_quota_suspended(sb, type);
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}
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/*
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* Operations supported for diskquotas.
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*/
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extern const struct dquot_operations dquot_operations;
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extern const struct quotactl_ops dquot_quotactl_sysfile_ops;
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#else
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static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type)
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{
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return 0;
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}
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static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type)
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{
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return 0;
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}
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static inline int sb_has_quota_suspended(struct super_block *sb, int type)
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{
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return 0;
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}
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static inline int sb_any_quota_suspended(struct super_block *sb)
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{
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return 0;
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}
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/* Does kernel know about any quota information for given sb + type? */
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static inline int sb_has_quota_loaded(struct super_block *sb, int type)
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{
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return 0;
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}
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static inline int sb_any_quota_loaded(struct super_block *sb)
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{
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return 0;
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}
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static inline int sb_has_quota_active(struct super_block *sb, int type)
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{
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return 0;
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}
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static inline int dquot_initialize(struct inode *inode)
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{
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return 0;
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}
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static inline bool dquot_initialize_needed(struct inode *inode)
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{
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return false;
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}
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static inline void dquot_drop(struct inode *inode)
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{
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}
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static inline int dquot_alloc_inode(struct inode *inode)
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{
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return 0;
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}
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static inline void dquot_free_inode(struct inode *inode)
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{
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}
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static inline int dquot_transfer(struct inode *inode, struct iattr *iattr)
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{
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return 0;
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}
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static inline int __dquot_alloc_space(struct inode *inode, qsize_t number,
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int flags)
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{
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if (!(flags & DQUOT_SPACE_RESERVE))
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inode_add_bytes(inode, number);
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return 0;
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}
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static inline void __dquot_free_space(struct inode *inode, qsize_t number,
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int flags)
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{
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if (!(flags & DQUOT_SPACE_RESERVE))
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inode_sub_bytes(inode, number);
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}
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static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number)
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{
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inode_add_bytes(inode, number);
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return 0;
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}
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static inline int dquot_reclaim_space_nodirty(struct inode *inode,
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qsize_t number)
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{
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inode_sub_bytes(inode, number);
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return 0;
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}
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static inline int dquot_disable(struct super_block *sb, int type,
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unsigned int flags)
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{
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return 0;
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}
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static inline int dquot_suspend(struct super_block *sb, int type)
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{
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return 0;
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}
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static inline int dquot_resume(struct super_block *sb, int type)
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{
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return 0;
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}
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#define dquot_file_open generic_file_open
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static inline int dquot_writeback_dquots(struct super_block *sb, int type)
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{
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return 0;
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}
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#endif /* CONFIG_QUOTA */
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static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr)
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{
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return __dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN);
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}
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static inline void dquot_alloc_space_nofail(struct inode *inode, qsize_t nr)
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{
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__dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN|DQUOT_SPACE_NOFAIL);
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mark_inode_dirty_sync(inode);
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}
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static inline int dquot_alloc_space(struct inode *inode, qsize_t nr)
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{
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int ret;
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ret = dquot_alloc_space_nodirty(inode, nr);
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if (!ret) {
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/*
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* Mark inode fully dirty. Since we are allocating blocks, inode
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* would become fully dirty soon anyway and it reportedly
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* reduces lock contention.
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*/
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mark_inode_dirty(inode);
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}
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return ret;
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}
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static inline int dquot_alloc_block_nodirty(struct inode *inode, qsize_t nr)
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{
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return dquot_alloc_space_nodirty(inode, nr << inode->i_blkbits);
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}
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static inline void dquot_alloc_block_nofail(struct inode *inode, qsize_t nr)
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{
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dquot_alloc_space_nofail(inode, nr << inode->i_blkbits);
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}
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static inline int dquot_alloc_block(struct inode *inode, qsize_t nr)
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{
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return dquot_alloc_space(inode, nr << inode->i_blkbits);
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}
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static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr)
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{
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return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0);
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}
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static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr)
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{
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int ret;
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ret = dquot_prealloc_block_nodirty(inode, nr);
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if (!ret)
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mark_inode_dirty_sync(inode);
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return ret;
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}
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static inline int dquot_reserve_block(struct inode *inode, qsize_t nr)
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{
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return __dquot_alloc_space(inode, nr << inode->i_blkbits,
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DQUOT_SPACE_WARN|DQUOT_SPACE_RESERVE);
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}
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static inline int dquot_claim_block(struct inode *inode, qsize_t nr)
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{
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int ret;
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ret = dquot_claim_space_nodirty(inode, nr << inode->i_blkbits);
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if (!ret)
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mark_inode_dirty_sync(inode);
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return ret;
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}
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static inline void dquot_reclaim_block(struct inode *inode, qsize_t nr)
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{
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dquot_reclaim_space_nodirty(inode, nr << inode->i_blkbits);
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mark_inode_dirty_sync(inode);
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}
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static inline void dquot_free_space_nodirty(struct inode *inode, qsize_t nr)
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{
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__dquot_free_space(inode, nr, 0);
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}
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static inline void dquot_free_space(struct inode *inode, qsize_t nr)
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{
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dquot_free_space_nodirty(inode, nr);
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mark_inode_dirty_sync(inode);
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}
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static inline void dquot_free_block_nodirty(struct inode *inode, qsize_t nr)
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{
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dquot_free_space_nodirty(inode, nr << inode->i_blkbits);
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}
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static inline void dquot_free_block(struct inode *inode, qsize_t nr)
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{
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dquot_free_space(inode, nr << inode->i_blkbits);
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}
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static inline void dquot_release_reservation_block(struct inode *inode,
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qsize_t nr)
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{
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__dquot_free_space(inode, nr << inode->i_blkbits, DQUOT_SPACE_RESERVE);
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}
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unsigned int qtype_enforce_flag(int type);
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#endif /* _LINUX_QUOTAOPS_ */
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