cregit-Linux how code gets into the kernel

Release 4.11 fs/freevxfs/vxfs.h

Directory: fs/freevxfs
/*
 * Copyright (c) 2000-2001 Christoph Hellwig.
 * Copyright (c) 2016 Krzysztof Blaszkowski
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL").
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */
#ifndef _VXFS_SUPER_H_

#define _VXFS_SUPER_H_

/*
 * Veritas filesystem driver - superblock structure.
 *
 * This file contains the definition of the disk and core
 * superblocks of the Veritas Filesystem.
 */
#include <linux/types.h>

/*
 * Superblock magic number (vxfs_super->vs_magic).
 */

#define VXFS_SUPER_MAGIC	0xa501FCF5

/*
 * The root inode.
 */

#define VXFS_ROOT_INO		2

/*
 * Num of entries in free extent array
 */

#define VXFS_NEFREE		32


enum vxfs_byte_order {
	
VXFS_BO_LE,
	
VXFS_BO_BE,
};


typedef __u16 __bitwise __fs16;

typedef __u32 __bitwise __fs32;

typedef __u64 __bitwise __fs64;

/*
 * VxFS superblock (disk).
 */

struct vxfs_sb {
	/*
         * Readonly fields for the version 1 superblock.
         *
         * Lots of this fields are no more used by version 2
         * and never filesystems.
         */
	
__fs32		vs_magic;		/* Magic number */
	
__fs32		vs_version;		/* VxFS version */
	
__fs32		vs_ctime;		/* create time - secs */
	
__fs32		vs_cutime;		/* create time - usecs */
	
__fs32		__unused1;		/* unused */
	
__fs32		__unused2;		/* unused */
	
__fs32		vs_old_logstart;	/* obsolete */
	
__fs32		vs_old_logend;		/* obsolete */
	
__fs32		vs_bsize;		/* block size */
	
__fs32		vs_size;		/* number of blocks */
	
__fs32		vs_dsize;		/* number of data blocks */
	
__fs32		vs_old_ninode;		/* obsolete */
	
__fs32		vs_old_nau;		/* obsolete */
	
__fs32		__unused3;		/* unused */
	
__fs32		vs_old_defiextsize;	/* obsolete */
	
__fs32		vs_old_ilbsize;		/* obsolete */
	
__fs32		vs_immedlen;		/* size of immediate data area */
	
__fs32		vs_ndaddr;		/* number of direct extentes */
	
__fs32		vs_firstau;		/* address of first AU */
	
__fs32		vs_emap;		/* offset of extent map in AU */
	
__fs32		vs_imap;		/* offset of inode map in AU */
	
__fs32		vs_iextop;		/* offset of ExtOp. map in AU */
	
__fs32		vs_istart;		/* offset of inode list in AU */
	
__fs32		vs_bstart;		/* offset of fdblock in AU */
	
__fs32		vs_femap;		/* aufirst + emap */
	
__fs32		vs_fimap;		/* aufirst + imap */
	
__fs32		vs_fiextop;		/* aufirst + iextop */
	
__fs32		vs_fistart;		/* aufirst + istart */
	
__fs32		vs_fbstart;		/* aufirst + bstart */
	
__fs32		vs_nindir;		/* number of entries in indir */
	
__fs32		vs_aulen;		/* length of AU in blocks */
	
__fs32		vs_auimlen;		/* length of imap in blocks */
	
__fs32		vs_auemlen;		/* length of emap in blocks */
	
__fs32		vs_auilen;		/* length of ilist in blocks */
	
__fs32		vs_aupad;		/* length of pad in blocks */
	
__fs32		vs_aublocks;		/* data blocks in AU */
	
__fs32		vs_maxtier;		/* log base 2 of aublocks */
	
__fs32		vs_inopb;		/* number of inodes per blk */
	
__fs32		vs_old_inopau;		/* obsolete */
	
__fs32		vs_old_inopilb;		/* obsolete */
	
__fs32		vs_old_ndiripau;	/* obsolete */
	
__fs32		vs_iaddrlen;		/* size of indirect addr ext. */
	
__fs32		vs_bshift;		/* log base 2 of bsize */
	
__fs32		vs_inoshift;		/* log base 2 of inobp */
	
__fs32		vs_bmask;		/* ~( bsize - 1 ) */
	
__fs32		vs_boffmask;		/* bsize - 1 */
	
__fs32		vs_old_inomask;		/* old_inopilb - 1 */
	
__fs32		vs_checksum;		/* checksum of V1 data */
	
	/*
         * Version 1, writable
         */
	
__fs32		vs_free;		/* number of free blocks */
	
__fs32		vs_ifree;		/* number of free inodes */
	
__fs32		vs_efree[VXFS_NEFREE];	/* number of free extents by size */
	
__fs32		vs_flags;		/* flags ?!? */
	
__u8		vs_mod;			/* filesystem has been changed */
	
__u8		vs_clean;		/* clean FS */
	
__fs16		__unused4;		/* unused */
	
__fs32		vs_firstlogid;		/* mount time log ID */
	
__fs32		vs_wtime;		/* last time written - sec */
	
__fs32		vs_wutime;		/* last time written - usec */
	
__u8		vs_fname[6];		/* FS name */
	
__u8		vs_fpack[6];		/* FS pack name */
	
__fs32		vs_logversion;		/* log format version */
	
__u32		__unused5;		/* unused */
	
	/*
         * Version 2, Read-only
         */
	
__fs32		vs_oltext[2];		/* OLT extent and replica */
	
__fs32		vs_oltsize;		/* OLT extent size */
	
__fs32		vs_iauimlen;		/* size of inode map */
	
__fs32		vs_iausize;		/* size of IAU in blocks */
	
__fs32		vs_dinosize;		/* size of inode in bytes */
	
__fs32		vs_old_dniaddr;		/* indir levels per inode */
	
__fs32		vs_checksum2;		/* checksum of V2 RO */

	/*
         * Actually much more...
         */
};


/*
 * In core superblock filesystem private data for VxFS.
 */

struct vxfs_sb_info {
	
struct vxfs_sb		*vsi_raw;	/* raw (on disk) superblock */
	
struct buffer_head	*vsi_bp;	/* buffer for raw superblock*/
	
struct inode		*vsi_fship;	/* fileset header inode */
	
struct inode		*vsi_ilist;	/* inode list inode */
	
struct inode		*vsi_stilist;	/* structural inode list inode */
	
u_long			vsi_iext;	/* initial inode list */
	
ino_t			vsi_fshino;	/* fileset header inode */
	
daddr_t			vsi_oltext;	/* OLT extent */
	
daddr_t			vsi_oltsize;	/* OLT size */
	
enum vxfs_byte_order	byte_order;
};


static inline u16 fs16_to_cpu(struct vxfs_sb_info *sbi, __fs16 a) { if (sbi->byte_order == VXFS_BO_BE) return be16_to_cpu((__force __be16)a); else return le16_to_cpu((__force __le16)a); }

Contributors

PersonTokensPropCommitsCommitProp
Krzysztof Błaszkowski44100.00%1100.00%
Total44100.00%1100.00%


static inline u32 fs32_to_cpu(struct vxfs_sb_info *sbi, __fs32 a) { if (sbi->byte_order == VXFS_BO_BE) return be32_to_cpu((__force __be32)a); else return le32_to_cpu((__force __le32)a); }

Contributors

PersonTokensPropCommitsCommitProp
Krzysztof Błaszkowski44100.00%1100.00%
Total44100.00%1100.00%


static inline u64 fs64_to_cpu(struct vxfs_sb_info *sbi, __fs64 a) { if (sbi->byte_order == VXFS_BO_BE) return be64_to_cpu((__force __be64)a); else return le64_to_cpu((__force __le64)a); }

Contributors

PersonTokensPropCommitsCommitProp
Krzysztof Błaszkowski44100.00%1100.00%
Total44100.00%1100.00%

/* * File modes. File types above 0xf000 are vxfs internal only, they should * not be passed back to higher levels of the system. vxfs file types must * never have one of the regular file type bits set. */ enum vxfs_mode { VXFS_ISUID = 0x00000800, /* setuid */ VXFS_ISGID = 0x00000400, /* setgid */ VXFS_ISVTX = 0x00000200, /* sticky bit */ VXFS_IREAD = 0x00000100, /* read */ VXFS_IWRITE = 0x00000080, /* write */ VXFS_IEXEC = 0x00000040, /* exec */ VXFS_IFIFO = 0x00001000, /* Named pipe */ VXFS_IFCHR = 0x00002000, /* Character device */ VXFS_IFDIR = 0x00004000, /* Directory */ VXFS_IFNAM = 0x00005000, /* Xenix device ?? */ VXFS_IFBLK = 0x00006000, /* Block device */ VXFS_IFREG = 0x00008000, /* Regular file */ VXFS_IFCMP = 0x00009000, /* Compressed file ?!? */ VXFS_IFLNK = 0x0000a000, /* Symlink */ VXFS_IFSOC = 0x0000c000, /* Socket */ /* VxFS internal */ VXFS_IFFSH = 0x10000000, /* Fileset header */ VXFS_IFILT = 0x20000000, /* Inode list */ VXFS_IFIAU = 0x30000000, /* Inode allocation unit */ VXFS_IFCUT = 0x40000000, /* Current usage table */ VXFS_IFATT = 0x50000000, /* Attr. inode */ VXFS_IFLCT = 0x60000000, /* Link count table */ VXFS_IFIAT = 0x70000000, /* Indirect attribute file */ VXFS_IFEMR = 0x80000000, /* Extent map reorg file */ VXFS_IFQUO = 0x90000000, /* BSD quota file */ VXFS_IFPTI = 0xa0000000, /* "Pass through" inode */ VXFS_IFLAB = 0x11000000, /* Device label file */ VXFS_IFOLT = 0x12000000, /* OLT file */ VXFS_IFLOG = 0x13000000, /* Log file */ VXFS_IFEMP = 0x14000000, /* Extent map file */ VXFS_IFEAU = 0x15000000, /* Extent AU file */ VXFS_IFAUS = 0x16000000, /* Extent AU summary file */ VXFS_IFDEV = 0x17000000, /* Device config file */ }; #define VXFS_TYPE_MASK 0xfffff000 #define VXFS_IS_TYPE(ip,type) (((ip)->vii_mode & VXFS_TYPE_MASK) == (type)) #define VXFS_ISFIFO(x) VXFS_IS_TYPE((x),VXFS_IFIFO) #define VXFS_ISCHR(x) VXFS_IS_TYPE((x),VXFS_IFCHR) #define VXFS_ISDIR(x) VXFS_IS_TYPE((x),VXFS_IFDIR) #define VXFS_ISNAM(x) VXFS_IS_TYPE((x),VXFS_IFNAM) #define VXFS_ISBLK(x) VXFS_IS_TYPE((x),VXFS_IFBLK) #define VXFS_ISLNK(x) VXFS_IS_TYPE((x),VXFS_IFLNK) #define VXFS_ISREG(x) VXFS_IS_TYPE((x),VXFS_IFREG) #define VXFS_ISCMP(x) VXFS_IS_TYPE((x),VXFS_IFCMP) #define VXFS_ISSOC(x) VXFS_IS_TYPE((x),VXFS_IFSOC) #define VXFS_ISFSH(x) VXFS_IS_TYPE((x),VXFS_IFFSH) #define VXFS_ISILT(x) VXFS_IS_TYPE((x),VXFS_IFILT) /* * Inmode organisation types. */ enum { VXFS_ORG_NONE = 0, /* Inode has *no* format ?!? */ VXFS_ORG_EXT4 = 1, /* Ext4 */ VXFS_ORG_IMMED = 2, /* All data stored in inode */ VXFS_ORG_TYPED = 3, /* Typed extents */ }; #define VXFS_IS_ORG(ip,org) ((ip)->vii_orgtype == (org)) #define VXFS_ISNONE(ip) VXFS_IS_ORG((ip), VXFS_ORG_NONE) #define VXFS_ISEXT4(ip) VXFS_IS_ORG((ip), VXFS_ORG_EXT4) #define VXFS_ISIMMED(ip) VXFS_IS_ORG((ip), VXFS_ORG_IMMED) #define VXFS_ISTYPED(ip) VXFS_IS_ORG((ip), VXFS_ORG_TYPED) /* * Get filesystem private data from VFS superblock. */ #define VXFS_SBI(sbp) \ ((struct vxfs_sb_info *)(sbp)->s_fs_info) #endif /* _VXFS_SUPER_H_ */

Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds63473.21%233.33%
Krzysztof Błaszkowski22926.44%233.33%
Cliff Wickman20.23%116.67%
Brian Gerst10.12%116.67%
Total866100.00%6100.00%
Directory: fs/freevxfs
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