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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>
166 lines
5 KiB
C
166 lines
5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _UFS_UFS_H
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#define _UFS_UFS_H 1
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#ifdef pr_fmt
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#undef pr_fmt
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#endif
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#define UFS_MAX_GROUP_LOADED 8
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#define UFS_CGNO_EMPTY ((unsigned)-1)
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struct ufs_sb_private_info;
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struct ufs_cg_private_info;
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struct ufs_csum;
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struct ufs_sb_info {
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struct ufs_sb_private_info * s_uspi;
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struct ufs_csum * s_csp;
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unsigned s_bytesex;
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unsigned s_flags;
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struct buffer_head ** s_ucg;
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struct ufs_cg_private_info * s_ucpi[UFS_MAX_GROUP_LOADED];
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unsigned s_cgno[UFS_MAX_GROUP_LOADED];
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unsigned short s_cg_loaded;
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unsigned s_mount_opt;
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struct super_block *sb;
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int work_queued; /* non-zero if the delayed work is queued */
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struct delayed_work sync_work; /* FS sync delayed work */
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spinlock_t work_lock; /* protects sync_work and work_queued */
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struct mutex s_lock;
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};
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struct ufs_inode_info {
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union {
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__fs32 i_data[15];
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__u8 i_symlink[2 * 4 * 15];
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__fs64 u2_i_data[15];
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} i_u1;
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__u32 i_flags;
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__u32 i_shadow;
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__u32 i_unused1;
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__u32 i_unused2;
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__u32 i_oeftflag;
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__u16 i_osync;
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__u64 i_lastfrag;
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seqlock_t meta_lock;
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struct mutex truncate_mutex;
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__u32 i_dir_start_lookup;
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struct inode vfs_inode;
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};
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/* mount options */
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#define UFS_MOUNT_ONERROR 0x0000000F
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#define UFS_MOUNT_ONERROR_PANIC 0x00000001
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#define UFS_MOUNT_ONERROR_LOCK 0x00000002
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#define UFS_MOUNT_ONERROR_UMOUNT 0x00000004
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#define UFS_MOUNT_ONERROR_REPAIR 0x00000008
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#define UFS_MOUNT_UFSTYPE 0x0000FFF0
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#define UFS_MOUNT_UFSTYPE_OLD 0x00000010
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#define UFS_MOUNT_UFSTYPE_44BSD 0x00000020
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#define UFS_MOUNT_UFSTYPE_SUN 0x00000040
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#define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080
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#define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100
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#define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200
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#define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400
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#define UFS_MOUNT_UFSTYPE_HP 0x00000800
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#define UFS_MOUNT_UFSTYPE_UFS2 0x00001000
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#define UFS_MOUNT_UFSTYPE_SUNOS 0x00002000
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#define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt
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#define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt
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#define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt)
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/*
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* Debug code
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*/
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#ifdef CONFIG_UFS_DEBUG
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# define UFSD(f, a...) { \
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pr_debug("UFSD (%s, %d): %s:", \
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__FILE__, __LINE__, __func__); \
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pr_debug(f, ## a); \
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}
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#else
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# define UFSD(f, a...) /**/
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#endif
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/* balloc.c */
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extern void ufs_free_fragments (struct inode *, u64, unsigned);
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extern void ufs_free_blocks (struct inode *, u64, unsigned);
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extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
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unsigned, int *, struct page *);
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/* cylinder.c */
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extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
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extern void ufs_put_cylinder (struct super_block *, unsigned);
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/* dir.c */
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extern const struct inode_operations ufs_dir_inode_operations;
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extern int ufs_add_link (struct dentry *, struct inode *);
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extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
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extern int ufs_make_empty(struct inode *, struct inode *);
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extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
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extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
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extern int ufs_empty_dir (struct inode *);
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extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
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extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
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struct page *page, struct inode *inode, bool update_times);
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/* file.c */
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extern const struct inode_operations ufs_file_inode_operations;
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extern const struct file_operations ufs_file_operations;
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extern const struct address_space_operations ufs_aops;
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/* ialloc.c */
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extern void ufs_free_inode (struct inode *inode);
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extern struct inode * ufs_new_inode (struct inode *, umode_t);
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/* inode.c */
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extern struct inode *ufs_iget(struct super_block *, unsigned long);
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extern int ufs_write_inode (struct inode *, struct writeback_control *);
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extern int ufs_sync_inode (struct inode *);
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extern void ufs_evict_inode (struct inode *);
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extern int ufs_setattr(struct dentry *dentry, struct iattr *attr);
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/* namei.c */
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extern const struct file_operations ufs_dir_operations;
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/* super.c */
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extern __printf(3, 4)
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void ufs_warning(struct super_block *, const char *, const char *, ...);
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extern __printf(3, 4)
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void ufs_error(struct super_block *, const char *, const char *, ...);
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extern __printf(3, 4)
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void ufs_panic(struct super_block *, const char *, const char *, ...);
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void ufs_mark_sb_dirty(struct super_block *sb);
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static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
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{
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return sb->s_fs_info;
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}
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static inline struct ufs_inode_info *UFS_I(struct inode *inode)
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{
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return container_of(inode, struct ufs_inode_info, vfs_inode);
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}
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/*
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* Give cylinder group number for a file system block.
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* Give cylinder group block number for a file system block.
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*/
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/* #define ufs_dtog(d) ((d) / uspi->s_fpg) */
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static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
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{
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do_div(b, uspi->s_fpg);
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return b;
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}
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/* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */
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static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
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{
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return do_div(b, uspi->s_fpg);
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}
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#endif /* _UFS_UFS_H */
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