linux-stable/include/linux/sysv_fs.h

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License cleanup: add SPDX GPL-2.0 license identifier to files with no license 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>
2017-11-01 14:07:57 +00:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_SYSV_FS_H
#define _LINUX_SYSV_FS_H
#define __packed2__ __attribute__((packed, aligned(2)))
#ifndef __KERNEL__
typedef u16 __fs16;
typedef u32 __fs16;
#endif
/* inode numbers are 16 bit */
typedef __fs16 sysv_ino_t;
/* Block numbers are 24 bit, sometimes stored in 32 bit.
On Coherent FS, they are always stored in PDP-11 manner: the least
significant 16 bits come last. */
typedef __fs32 sysv_zone_t;
/* 0 is non-existent */
#define SYSV_BADBL_INO 1 /* inode of bad blocks file */
#define SYSV_ROOT_INO 2 /* inode of root directory */
/* Xenix super-block data on disk */
#define XENIX_NICINOD 100 /* number of inode cache entries */
#define XENIX_NICFREE 100 /* number of free block list chunk entries */
struct xenix_super_block {
__fs16 s_isize; /* index of first data zone */
__fs32 s_fsize __packed2__; /* total number of zones of this fs */
/* the start of the free block list: */
__fs16 s_nfree; /* number of free blocks in s_free, <= XENIX_NICFREE */
sysv_zone_t s_free[XENIX_NICFREE]; /* first free block list chunk */
/* the cache of free inodes: */
__fs16 s_ninode; /* number of free inodes in s_inode, <= XENIX_NICINOD */
sysv_ino_t s_inode[XENIX_NICINOD]; /* some free inodes */
/* locks, not used by Linux: */
char s_flock; /* lock during free block list manipulation */
char s_ilock; /* lock during inode cache manipulation */
char s_fmod; /* super-block modified flag */
char s_ronly; /* flag whether fs is mounted read-only */
__fs32 s_time __packed2__; /* time of last super block update */
__fs32 s_tfree __packed2__; /* total number of free zones */
__fs16 s_tinode; /* total number of free inodes */
__fs16 s_dinfo[4]; /* device information ?? */
char s_fname[6]; /* file system volume name */
char s_fpack[6]; /* file system pack name */
char s_clean; /* set to 0x46 when filesystem is properly unmounted */
char s_fill[371];
s32 s_magic; /* version of file system */
__fs32 s_type; /* type of file system: 1 for 512 byte blocks
2 for 1024 byte blocks
3 for 2048 byte blocks */
};
/*
* SystemV FS comes in two variants:
* sysv2: System V Release 2 (e.g. Microport), structure elements aligned(2).
* sysv4: System V Release 4 (e.g. Consensys), structure elements aligned(4).
*/
#define SYSV_NICINOD 100 /* number of inode cache entries */
#define SYSV_NICFREE 50 /* number of free block list chunk entries */
/* SystemV4 super-block data on disk */
struct sysv4_super_block {
__fs16 s_isize; /* index of first data zone */
u16 s_pad0;
__fs32 s_fsize; /* total number of zones of this fs */
/* the start of the free block list: */
__fs16 s_nfree; /* number of free blocks in s_free, <= SYSV_NICFREE */
u16 s_pad1;
sysv_zone_t s_free[SYSV_NICFREE]; /* first free block list chunk */
/* the cache of free inodes: */
__fs16 s_ninode; /* number of free inodes in s_inode, <= SYSV_NICINOD */
u16 s_pad2;
sysv_ino_t s_inode[SYSV_NICINOD]; /* some free inodes */
/* locks, not used by Linux: */
char s_flock; /* lock during free block list manipulation */
char s_ilock; /* lock during inode cache manipulation */
char s_fmod; /* super-block modified flag */
char s_ronly; /* flag whether fs is mounted read-only */
__fs32 s_time; /* time of last super block update */
__fs16 s_dinfo[4]; /* device information ?? */
__fs32 s_tfree; /* total number of free zones */
__fs16 s_tinode; /* total number of free inodes */
u16 s_pad3;
char s_fname[6]; /* file system volume name */
char s_fpack[6]; /* file system pack name */
s32 s_fill[12];
__fs32 s_state; /* file system state: 0x7c269d38-s_time means clean */
s32 s_magic; /* version of file system */
__fs32 s_type; /* type of file system: 1 for 512 byte blocks
2 for 1024 byte blocks */
};
/* SystemV2 super-block data on disk */
struct sysv2_super_block {
__fs16 s_isize; /* index of first data zone */
__fs32 s_fsize __packed2__; /* total number of zones of this fs */
/* the start of the free block list: */
__fs16 s_nfree; /* number of free blocks in s_free, <= SYSV_NICFREE */
sysv_zone_t s_free[SYSV_NICFREE]; /* first free block list chunk */
/* the cache of free inodes: */
__fs16 s_ninode; /* number of free inodes in s_inode, <= SYSV_NICINOD */
sysv_ino_t s_inode[SYSV_NICINOD]; /* some free inodes */
/* locks, not used by Linux: */
char s_flock; /* lock during free block list manipulation */
char s_ilock; /* lock during inode cache manipulation */
char s_fmod; /* super-block modified flag */
char s_ronly; /* flag whether fs is mounted read-only */
__fs32 s_time __packed2__; /* time of last super block update */
__fs16 s_dinfo[4]; /* device information ?? */
__fs32 s_tfree __packed2__; /* total number of free zones */
__fs16 s_tinode; /* total number of free inodes */
char s_fname[6]; /* file system volume name */
char s_fpack[6]; /* file system pack name */
s32 s_fill[14];
__fs32 s_state; /* file system state: 0xcb096f43 means clean */
s32 s_magic; /* version of file system */
__fs32 s_type; /* type of file system: 1 for 512 byte blocks
2 for 1024 byte blocks */
};
/* V7 super-block data on disk */
#define V7_NICINOD 100 /* number of inode cache entries */
#define V7_NICFREE 50 /* number of free block list chunk entries */
struct v7_super_block {
__fs16 s_isize; /* index of first data zone */
__fs32 s_fsize __packed2__; /* total number of zones of this fs */
/* the start of the free block list: */
__fs16 s_nfree; /* number of free blocks in s_free, <= V7_NICFREE */
sysv_zone_t s_free[V7_NICFREE]; /* first free block list chunk */
/* the cache of free inodes: */
__fs16 s_ninode; /* number of free inodes in s_inode, <= V7_NICINOD */
sysv_ino_t s_inode[V7_NICINOD]; /* some free inodes */
/* locks, not used by Linux or V7: */
char s_flock; /* lock during free block list manipulation */
char s_ilock; /* lock during inode cache manipulation */
char s_fmod; /* super-block modified flag */
char s_ronly; /* flag whether fs is mounted read-only */
__fs32 s_time __packed2__; /* time of last super block update */
/* the following fields are not maintained by V7: */
__fs32 s_tfree __packed2__; /* total number of free zones */
__fs16 s_tinode; /* total number of free inodes */
__fs16 s_m; /* interleave factor */
__fs16 s_n; /* interleave factor */
char s_fname[6]; /* file system name */
char s_fpack[6]; /* file system pack name */
};
/* Constants to aid sanity checking */
/* This is not a hard limit, nor enforced by v7 kernel. It's actually just
* the limit used by Seventh Edition's ls, though is high enough to assume
* that no reasonable file system would have that much entries in root
* directory. Thus, if we see anything higher, we just probably got the
* endiannes wrong. */
#define V7_NFILES 1024
/* The disk addresses are three-byte (despite direct block addresses being
* aligned word-wise in inode). If the most significant byte is non-zero,
* something is most likely wrong (not a filesystem, bad bytesex). */
#define V7_MAXSIZE 0x00ffffff
/* Coherent super-block data on disk */
#define COH_NICINOD 100 /* number of inode cache entries */
#define COH_NICFREE 64 /* number of free block list chunk entries */
struct coh_super_block {
__fs16 s_isize; /* index of first data zone */
__fs32 s_fsize __packed2__; /* total number of zones of this fs */
/* the start of the free block list: */
__fs16 s_nfree; /* number of free blocks in s_free, <= COH_NICFREE */
sysv_zone_t s_free[COH_NICFREE] __packed2__; /* first free block list chunk */
/* the cache of free inodes: */
__fs16 s_ninode; /* number of free inodes in s_inode, <= COH_NICINOD */
sysv_ino_t s_inode[COH_NICINOD]; /* some free inodes */
/* locks, not used by Linux: */
char s_flock; /* lock during free block list manipulation */
char s_ilock; /* lock during inode cache manipulation */
char s_fmod; /* super-block modified flag */
char s_ronly; /* flag whether fs is mounted read-only */
__fs32 s_time __packed2__; /* time of last super block update */
__fs32 s_tfree __packed2__; /* total number of free zones */
__fs16 s_tinode; /* total number of free inodes */
__fs16 s_interleave_m; /* interleave factor */
__fs16 s_interleave_n;
char s_fname[6]; /* file system volume name */
char s_fpack[6]; /* file system pack name */
__fs32 s_unique; /* zero, not used */
};
/* SystemV/Coherent inode data on disk */
struct sysv_inode {
__fs16 i_mode;
__fs16 i_nlink;
__fs16 i_uid;
__fs16 i_gid;
__fs32 i_size;
u8 i_data[3*(10+1+1+1)];
u8 i_gen;
__fs32 i_atime; /* time of last access */
__fs32 i_mtime; /* time of last modification */
__fs32 i_ctime; /* time of creation */
};
/* SystemV/Coherent directory entry on disk */
#define SYSV_NAMELEN 14 /* max size of name in struct sysv_dir_entry */
struct sysv_dir_entry {
sysv_ino_t inode;
char name[SYSV_NAMELEN]; /* up to 14 characters, the rest are zeroes */
};
#define SYSV_DIRSIZE sizeof(struct sysv_dir_entry) /* size of every directory entry */
#endif /* _LINUX_SYSV_FS_H */