Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 943 insertions, 0 deletions

diff --git a/include/linux/ufs_fs.h b/include/linux/ufs_fs.h
new file mode 100644
index 000000000000..7a6babeca256
--- /dev/null
+++ b/include/linux/ufs_fs.h
@@ -0,0 +1,943 @@
+/*
+ *  linux/include/linux/ufs_fs.h
+ *
+ * Copyright (C) 1996
+ * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
+ * Laboratory for Computer Science Research Computing Facility
+ * Rutgers, The State University of New Jersey
+ *
+ * Clean swab support by Fare <fare@tunes.org>
+ * just hope no one is using NNUUXXI on __?64 structure elements
+ * 64-bit clean thanks to Maciej W. Rozycki <macro@ds2.pg.gda.pl>
+ *
+ * 4.4BSD (FreeBSD) support added on February 1st 1998 by
+ * Niels Kristian Bech Jensen <nkbj@image.dk> partially based
+ * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
+ *
+ * NeXTstep support added on February 5th 1998 by
+ * Niels Kristian Bech Jensen <nkbj@image.dk>.
+ *
+ * Write support by Daniel Pirkl <daniel.pirkl@email.cz>
+ *
+ * HP/UX hfs filesystem support added by
+ * Martin K. Petersen <mkp@mkp.net>, August 1999
+ *
+ * UFS2 (of FreeBSD 5.x) support added by
+ * Niraj Kumar <niraj17@iitbombay.org>  , Jan 2004
+ *
+ */
+
+#ifndef __LINUX_UFS_FS_H
+#define __LINUX_UFS_FS_H
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/time.h>
+#include <linux/stat.h>
+#include <linux/fs.h>
+
+#ifndef __KERNEL__
+typedef __u64 __fs64;
+typedef __u32 __fs32;
+typedef __u16 __fs16;
+#else
+typedef __u64 __bitwise __fs64;
+typedef __u32 __bitwise __fs32;
+typedef __u16 __bitwise __fs16;
+#endif
+
+#include <linux/ufs_fs_i.h>
+#include <linux/ufs_fs_sb.h>
+
+#define UFS_BBLOCK 0
+#define UFS_BBSIZE 8192
+#define UFS_SBLOCK 8192
+#define UFS_SBSIZE 8192
+
+#define UFS_SECTOR_SIZE 512
+#define UFS_SECTOR_BITS 9
+#define UFS_MAGIC  0x00011954
+#define UFS2_MAGIC 0x19540119
+#define UFS_CIGAM  0x54190100 /* byteswapped MAGIC */
+
+/* Copied from FreeBSD */
+/*
+ * Each disk drive contains some number of filesystems.
+ * A filesystem consists of a number of cylinder groups.
+ * Each cylinder group has inodes and data.
+ *
+ * A filesystem is described by its super-block, which in turn
+ * describes the cylinder groups.  The super-block is critical
+ * data and is replicated in each cylinder group to protect against
+ * catastrophic loss.  This is done at `newfs' time and the critical
+ * super-block data does not change, so the copies need not be
+ * referenced further unless disaster strikes.
+ *
+ * For filesystem fs, the offsets of the various blocks of interest
+ * are given in the super block as:
+ *      [fs->fs_sblkno]         Super-block
+ *      [fs->fs_cblkno]         Cylinder group block
+ *      [fs->fs_iblkno]         Inode blocks
+ *      [fs->fs_dblkno]         Data blocks
+ * The beginning of cylinder group cg in fs, is given by
+ * the ``cgbase(fs, cg)'' macro.
+ *
+ * Depending on the architecture and the media, the superblock may
+ * reside in any one of four places. For tiny media where every block
+ * counts, it is placed at the very front of the partition. Historically,
+ * UFS1 placed it 8K from the front to leave room for the disk label and
+ * a small bootstrap. For UFS2 it got moved to 64K from the front to leave
+ * room for the disk label and a bigger bootstrap, and for really piggy
+ * systems we check at 256K from the front if the first three fail. In
+ * all cases the size of the superblock will be SBLOCKSIZE. All values are
+ * given in byte-offset form, so they do not imply a sector size. The
+ * SBLOCKSEARCH specifies the order in which the locations should be searched.
+ */
+#define SBLOCK_FLOPPY        0
+#define SBLOCK_UFS1       8192
+#define SBLOCK_UFS2      65536
+#define SBLOCK_PIGGY    262144
+#define SBLOCKSIZE        8192
+#define SBLOCKSEARCH \
+        { SBLOCK_UFS2, SBLOCK_UFS1, SBLOCK_FLOPPY, SBLOCK_PIGGY, -1 }
+
+
+/* HP specific MAGIC values */
+
+#define UFS_MAGIC_LFN   0x00095014 /* fs supports filenames > 14 chars */
+#define UFS_CIGAM_LFN   0x14500900 /* srahc 41 < semanelif stroppus sf */
+
+#define UFS_MAGIC_SEC   0x00612195 /* B1 security fs */
+#define UFS_CIGAM_SEC   0x95216100
+
+#define UFS_MAGIC_FEA   0x00195612 /* fs_featurebits supported */
+#define UFS_CIGAM_FEA   0x12561900
+
+#define UFS_MAGIC_4GB   0x05231994 /* fs > 4 GB && fs_featurebits */
+#define UFS_CIGAM_4GB   0x94192305
+
+/* Seems somebody at HP goofed here. B1 and lfs are both 0x2 !?! */
+#define UFS_FSF_LFN     0x00000001 /* long file names */
+#define UFS_FSF_B1      0x00000002 /* B1 security */
+#define UFS_FSF_LFS     0x00000002 /* large files */
+#define UFS_FSF_LUID    0x00000004 /* large UIDs */
+
+/* End of HP stuff */
+
+
+#define UFS_BSIZE       8192
+#define UFS_MINBSIZE    4096
+#define UFS_FSIZE       1024
+#define UFS_MAXFRAG     (UFS_BSIZE / UFS_FSIZE)
+
+#define UFS_NDADDR 12
+#define UFS_NINDIR 3
+
+#define UFS_IND_BLOCK   (UFS_NDADDR + 0)
+#define UFS_DIND_BLOCK  (UFS_NDADDR + 1)
+#define UFS_TIND_BLOCK  (UFS_NDADDR + 2)
+
+#define UFS_NDIR_FRAGMENT (UFS_NDADDR << uspi->s_fpbshift)
+#define UFS_IND_FRAGMENT (UFS_IND_BLOCK << uspi->s_fpbshift)
+#define UFS_DIND_FRAGMENT (UFS_DIND_BLOCK << uspi->s_fpbshift)
+#define UFS_TIND_FRAGMENT (UFS_TIND_BLOCK << uspi->s_fpbshift)
+
+#define UFS_ROOTINO 2
+#define UFS_FIRST_INO (UFS_ROOTINO + 1)
+
+#define UFS_USEEFT  ((__u16)65535)
+
+#define UFS_FSOK      0x7c269d38
+#define UFS_FSACTIVE  ((char)0x00)
+#define UFS_FSCLEAN   ((char)0x01)
+#define UFS_FSSTABLE  ((char)0x02)
+#define UFS_FSOSF1    ((char)0x03)      /* is this correct for DEC OSF/1? */
+#define UFS_FSBAD     ((char)0xff)
+
+/* From here to next blank line, s_flags for ufs_sb_info */
+/* directory entry encoding */
+#define UFS_DE_MASK             0x00000010      /* mask for the following */
+#define UFS_DE_OLD              0x00000000
+#define UFS_DE_44BSD            0x00000010
+/* uid encoding */
+#define UFS_UID_MASK            0x00000060      /* mask for the following */
+#define UFS_UID_OLD             0x00000000
+#define UFS_UID_44BSD           0x00000020
+#define UFS_UID_EFT             0x00000040
+/* superblock state encoding */
+#define UFS_ST_MASK             0x00000700      /* mask for the following */
+#define UFS_ST_OLD              0x00000000
+#define UFS_ST_44BSD            0x00000100
+#define UFS_ST_SUN              0x00000200
+#define UFS_ST_SUNx86           0x00000400
+/*cylinder group encoding */
+#define UFS_CG_MASK             0x00003000      /* mask for the following */
+#define UFS_CG_OLD              0x00000000
+#define UFS_CG_44BSD            0x00002000
+#define UFS_CG_SUN              0x00001000
+/* filesystem type encoding */
+#define UFS_TYPE_MASK           0x00010000      /* mask for the following */
+#define UFS_TYPE_UFS1           0x00000000
+#define UFS_TYPE_UFS2           0x00010000
+
+
+/* fs_inodefmt options */
+#define UFS_42INODEFMT  -1
+#define UFS_44INODEFMT  2
+
+/* mount options */
+#define UFS_MOUNT_ONERROR               0x0000000F
+#define UFS_MOUNT_ONERROR_PANIC         0x00000001
+#define UFS_MOUNT_ONERROR_LOCK          0x00000002
+#define UFS_MOUNT_ONERROR_UMOUNT        0x00000004
+#define UFS_MOUNT_ONERROR_REPAIR        0x00000008
+
+#define UFS_MOUNT_UFSTYPE               0x0000FFF0
+#define UFS_MOUNT_UFSTYPE_OLD           0x00000010
+#define UFS_MOUNT_UFSTYPE_44BSD         0x00000020
+#define UFS_MOUNT_UFSTYPE_SUN           0x00000040
+#define UFS_MOUNT_UFSTYPE_NEXTSTEP      0x00000080
+#define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD   0x00000100
+#define UFS_MOUNT_UFSTYPE_OPENSTEP      0x00000200
+#define UFS_MOUNT_UFSTYPE_SUNx86        0x00000400
+#define UFS_MOUNT_UFSTYPE_HP            0x00000800
+#define UFS_MOUNT_UFSTYPE_UFS2          0x00001000
+
+#define ufs_clear_opt(o,opt)    o &= ~UFS_MOUNT_##opt
+#define ufs_set_opt(o,opt)      o |= UFS_MOUNT_##opt
+#define ufs_test_opt(o,opt)     ((o) & UFS_MOUNT_##opt)
+
+/*
+ * MINFREE gives the minimum acceptable percentage of file system
+ * blocks which may be free. If the freelist drops below this level
+ * only the superuser may continue to allocate blocks. This may
+ * be set to 0 if no reserve of free blocks is deemed necessary,
+ * however throughput drops by fifty percent if the file system
+ * is run at between 95% and 100% full; thus the minimum default
+ * value of fs_minfree is 5%. However, to get good clustering
+ * performance, 10% is a better choice. hence we use 10% as our
+ * default value. With 10% free space, fragmentation is not a
+ * problem, so we choose to optimize for time.
+ */
+#define UFS_MINFREE         5
+#define UFS_DEFAULTOPT      UFS_OPTTIME
+            
+/*
+ * Turn file system block numbers into disk block addresses.
+ * This maps file system blocks to device size blocks.
+ */
+#define ufs_fsbtodb(uspi, b)    ((b) << (uspi)->s_fsbtodb)
+#define ufs_dbtofsb(uspi, b)    ((b) >> (uspi)->s_fsbtodb)
+
+/*
+ * Cylinder group macros to locate things in cylinder groups.
+ * They calc file system addresses of cylinder group data structures.
+ */
+#define ufs_cgbase(c)   (uspi->s_fpg * (c))
+#define ufs_cgstart(c)  ((uspi)->fs_magic == UFS2_MAGIC ?  ufs_cgbase(c) : \
+        (ufs_cgbase(c)  + uspi->s_cgoffset * ((c) & ~uspi->s_cgmask)))
+#define ufs_cgsblock(c) (ufs_cgstart(c) + uspi->s_sblkno)       /* super blk */
+#define ufs_cgcmin(c)   (ufs_cgstart(c) + uspi->s_cblkno)       /* cg block */
+#define ufs_cgimin(c)   (ufs_cgstart(c) + uspi->s_iblkno)       /* inode blk */
+#define ufs_cgdmin(c)   (ufs_cgstart(c) + uspi->s_dblkno)       /* 1st data */
+
+/*
+ * Macros for handling inode numbers:
+ *     inode number to file system block offset.
+ *     inode number to cylinder group number.
+ *     inode number to file system block address.
+ */
+#define ufs_inotocg(x)          ((x) / uspi->s_ipg)
+#define ufs_inotocgoff(x)       ((x) % uspi->s_ipg)
+#define ufs_inotofsba(x)        (ufs_cgimin(ufs_inotocg(x)) + ufs_inotocgoff(x) / uspi->s_inopf)
+#define ufs_inotofsbo(x)        ((x) % uspi->s_inopf)
+
+/*
+ * Give cylinder group number for a file system block.
+ * Give cylinder group block number for a file system block.
+ */
+#define ufs_dtog(d)     ((d) / uspi->s_fpg)
+#define ufs_dtogd(d)    ((d) % uspi->s_fpg)
+
+/*
+ * Compute the cylinder and rotational position of a cyl block addr.
+ */
+#define ufs_cbtocylno(bno) \
+        ((bno) * uspi->s_nspf / uspi->s_spc)
+#define ufs_cbtorpos(bno) \
+        ((((bno) * uspi->s_nspf % uspi->s_spc / uspi->s_nsect \
+        * uspi->s_trackskew + (bno) * uspi->s_nspf % uspi->s_spc \
+        % uspi->s_nsect * uspi->s_interleave) % uspi->s_nsect \
+        * uspi->s_nrpos) / uspi->s_npsect)
+
+/*
+ * The following macros optimize certain frequently calculated
+ * quantities by using shifts and masks in place of divisions
+ * modulos and multiplications.
+ */
+#define ufs_blkoff(loc)         ((loc) & uspi->s_qbmask)
+#define ufs_fragoff(loc)        ((loc) & uspi->s_qfmask)
+#define ufs_lblktosize(blk)     ((blk) << uspi->s_bshift)
+#define ufs_lblkno(loc)         ((loc) >> uspi->s_bshift)
+#define ufs_numfrags(loc)       ((loc) >> uspi->s_fshift)
+#define ufs_blkroundup(size)    (((size) + uspi->s_qbmask) & uspi->s_bmask)
+#define ufs_fragroundup(size)   (((size) + uspi->s_qfmask) & uspi->s_fmask)
+#define ufs_fragstoblks(frags)  ((frags) >> uspi->s_fpbshift)
+#define ufs_blkstofrags(blks)   ((blks) << uspi->s_fpbshift)
+#define ufs_fragnum(fsb)        ((fsb) & uspi->s_fpbmask)
+#define ufs_blknum(fsb)         ((fsb) & ~uspi->s_fpbmask)
+
+#define UFS_MAXNAMLEN 255
+#define UFS_MAXMNTLEN 512
+#define UFS2_MAXMNTLEN 468
+#define UFS2_MAXVOLLEN 32
+/* #define UFS_MAXCSBUFS 31 */
+#define UFS_LINK_MAX 32000
+/*
+#define UFS2_NOCSPTRS   ((128 / sizeof(void *)) - 4)
+*/
+#define UFS2_NOCSPTRS   28
+
+/*
+ * UFS_DIR_PAD defines the directory entries boundaries
+ * (must be a multiple of 4)
+ */
+#define UFS_DIR_PAD                     4
+#define UFS_DIR_ROUND                   (UFS_DIR_PAD - 1)
+#define UFS_DIR_REC_LEN(name_len)       (((name_len) + 1 + 8 + UFS_DIR_ROUND) & ~UFS_DIR_ROUND)
+
+struct ufs_timeval {
+        __fs32  tv_sec;
+        __fs32  tv_usec;
+};
+
+struct ufs_dir_entry {
+        __fs32  d_ino;                  /* inode number of this entry */
+        __fs16  d_reclen;               /* length of this entry */
+        union {
+                __fs16  d_namlen;               /* actual length of d_name */
+                struct {
+                        __u8    d_type;         /* file type */
+                        __u8    d_namlen;       /* length of string in d_name */
+                } d_44;
+        } d_u;
+        __u8    d_name[UFS_MAXNAMLEN + 1];      /* file name */
+};
+
+struct ufs_csum {
+        __fs32  cs_ndir;        /* number of directories */
+        __fs32  cs_nbfree;      /* number of free blocks */
+        __fs32  cs_nifree;      /* number of free inodes */
+        __fs32  cs_nffree;      /* number of free frags */
+};
+struct ufs2_csum_total {
+        __fs64  cs_ndir;        /* number of directories */
+        __fs64  cs_nbfree;      /* number of free blocks */
+        __fs64  cs_nifree;      /* number of free inodes */
+        __fs64  cs_nffree;      /* number of free frags */
+        __fs64   cs_numclusters;        /* number of free clusters */
+        __fs64   cs_spare[3];   /* future expansion */
+};
+
+/*
+ * This is the actual superblock, as it is laid out on the disk.
+ */
+struct ufs_super_block {
+        __fs32  fs_link;        /* UNUSED */
+        __fs32  fs_rlink;       /* UNUSED */
+        __fs32  fs_sblkno;      /* addr of super-block in filesys */
+        __fs32  fs_cblkno;      /* offset of cyl-block in filesys */
+        __fs32  fs_iblkno;      /* offset of inode-blocks in filesys */
+        __fs32  fs_dblkno;      /* offset of first data after cg */
+        __fs32  fs_cgoffset;    /* cylinder group offset in cylinder */
+        __fs32  fs_cgmask;      /* used to calc mod fs_ntrak */
+        __fs32  fs_time;        /* last time written -- time_t */
+        __fs32  fs_size;        /* number of blocks in fs */
+        __fs32  fs_dsize;       /* number of data blocks in fs */
+        __fs32  fs_ncg;         /* number of cylinder groups */
+        __fs32  fs_bsize;       /* size of basic blocks in fs */
+        __fs32  fs_fsize;       /* size of frag blocks in fs */
+        __fs32  fs_frag;        /* number of frags in a block in fs */
+/* these are configuration parameters */
+        __fs32  fs_minfree;     /* minimum percentage of free blocks */
+        __fs32  fs_rotdelay;    /* num of ms for optimal next block */
+        __fs32  fs_rps;         /* disk revolutions per second */
+/* these fields can be computed from the others */
+        __fs32  fs_bmask;       /* ``blkoff'' calc of blk offsets */
+        __fs32  fs_fmask;       /* ``fragoff'' calc of frag offsets */
+        __fs32  fs_bshift;      /* ``lblkno'' calc of logical blkno */
+        __fs32  fs_fshift;      /* ``numfrags'' calc number of frags */
+/* these are configuration parameters */
+        __fs32  fs_maxcontig;   /* max number of contiguous blks */
+        __fs32  fs_maxbpg;      /* max number of blks per cyl group */
+/* these fields can be computed from the others */
+        __fs32  fs_fragshift;   /* block to frag shift */
+        __fs32  fs_fsbtodb;     /* fsbtodb and dbtofsb shift constant */
+        __fs32  fs_sbsize;      /* actual size of super block */
+        __fs32  fs_csmask;      /* csum block offset */
+        __fs32  fs_csshift;     /* csum block number */
+        __fs32  fs_nindir;      /* value of NINDIR */
+        __fs32  fs_inopb;       /* value of INOPB */
+        __fs32  fs_nspf;        /* value of NSPF */
+/* yet another configuration parameter */
+        __fs32  fs_optim;       /* optimization preference, see below */
+/* these fields are derived from the hardware */
+        union {
+                struct {
+                        __fs32  fs_npsect;      /* # sectors/track including spares */
+                } fs_sun;
+                struct {
+                        __fs32  fs_state;       /* file system state time stamp */
+                } fs_sunx86;
+        } fs_u1;
+        __fs32  fs_interleave;  /* hardware sector interleave */
+        __fs32  fs_trackskew;   /* sector 0 skew, per track */
+/* a unique id for this filesystem (currently unused and unmaintained) */
+/* In 4.3 Tahoe this space is used by fs_headswitch and fs_trkseek */
+/* Neither of those fields is used in the Tahoe code right now but */
+/* there could be problems if they are.                            */
+        __fs32  fs_id[2];       /* file system id */
+/* sizes determined by number of cylinder groups and their sizes */
+        __fs32  fs_csaddr;      /* blk addr of cyl grp summary area */
+        __fs32  fs_cssize;      /* size of cyl grp summary area */
+        __fs32  fs_cgsize;      /* cylinder group size */
+/* these fields are derived from the hardware */
+        __fs32  fs_ntrak;       /* tracks per cylinder */
+        __fs32  fs_nsect;       /* sectors per track */
+        __fs32  fs_spc;         /* sectors per cylinder */
+/* this comes from the disk driver partitioning */
+        __fs32  fs_ncyl;        /* cylinders in file system */
+/* these fields can be computed from the others */
+        __fs32  fs_cpg;         /* cylinders per group */
+        __fs32  fs_ipg;         /* inodes per cylinder group */
+        __fs32  fs_fpg;         /* blocks per group * fs_frag */
+/* this data must be re-computed after crashes */
+        struct ufs_csum fs_cstotal;     /* cylinder summary information */
+/* these fields are cleared at mount time */
+        __s8    fs_fmod;        /* super block modified flag */
+        __s8    fs_clean;       /* file system is clean flag */
+        __s8    fs_ronly;       /* mounted read-only flag */
+        __s8    fs_flags;       /* currently unused flag */
+        union {
+                struct {
+                        __s8    fs_fsmnt[UFS_MAXMNTLEN];/* name mounted on */
+                        __fs32  fs_cgrotor;     /* last cg searched */
+                        __fs32  fs_csp[UFS_MAXCSBUFS];/*list of fs_cs info buffers */
+                        __fs32  fs_maxcluster;
+                        __fs32  fs_cpc;         /* cyl per cycle in postbl */
+                        __fs16  fs_opostbl[16][8]; /* old rotation block list head */
+                } fs_u1;
+                struct {
+                        __s8  fs_fsmnt[UFS2_MAXMNTLEN]; /* name mounted on */
+                        __u8   fs_volname[UFS2_MAXVOLLEN]; /* volume name */
+                        __fs64  fs_swuid;               /* system-wide uid */
+                        __fs32  fs_pad; /* due to alignment of fs_swuid */
+                        __fs32   fs_cgrotor;     /* last cg searched */
+                        __fs32   fs_ocsp[UFS2_NOCSPTRS]; /*list of fs_cs info buffers */
+                        __fs32   fs_contigdirs;/*# of contiguously allocated dirs */
+                        __fs32   fs_csp;        /* cg summary info buffer for fs_cs */
+                        __fs32   fs_maxcluster;
+                        __fs32   fs_active;/* used by snapshots to track fs */
+                        __fs32   fs_old_cpc;    /* cyl per cycle in postbl */
+                        __fs32   fs_maxbsize;/*maximum blocking factor permitted */
+                        __fs64   fs_sparecon64[17];/*old rotation block list head */
+                        __fs64   fs_sblockloc; /* byte offset of standard superblock */
+                        struct  ufs2_csum_total fs_cstotal;/*cylinder summary information*/
+                        struct  ufs_timeval    fs_time;         /* last time written */
+                        __fs64    fs_size;              /* number of blocks in fs */
+                        __fs64    fs_dsize;     /* number of data blocks in fs */
+                        __fs64   fs_csaddr;     /* blk addr of cyl grp summary area */
+                        __fs64    fs_pendingblocks;/* blocks in process of being freed */
+                        __fs32    fs_pendinginodes;/*inodes in process of being freed */
+                } fs_u2;
+        }  fs_u11;
+        union {
+                struct {
+                        __fs32  fs_sparecon[53];/* reserved for future constants */
+                        __fs32  fs_reclaim;
+                        __fs32  fs_sparecon2[1];
+                        __fs32  fs_state;       /* file system state time stamp */
+                        __fs32  fs_qbmask[2];   /* ~usb_bmask */
+                        __fs32  fs_qfmask[2];   /* ~usb_fmask */
+                } fs_sun;
+                struct {
+                        __fs32  fs_sparecon[53];/* reserved for future constants */
+                        __fs32  fs_reclaim;
+                        __fs32  fs_sparecon2[1];
+                        __fs32  fs_npsect;      /* # sectors/track including spares */
+                        __fs32  fs_qbmask[2];   /* ~usb_bmask */
+                        __fs32  fs_qfmask[2];   /* ~usb_fmask */
+                } fs_sunx86;
+                struct {
+                        __fs32  fs_sparecon[50];/* reserved for future constants */
+                        __fs32  fs_contigsumsize;/* size of cluster summary array */
+                        __fs32  fs_maxsymlinklen;/* max length of an internal symlink */
+                        __fs32  fs_inodefmt;    /* format of on-disk inodes */
+                        __fs32  fs_maxfilesize[2];      /* max representable file size */
+                        __fs32  fs_qbmask[2];   /* ~usb_bmask */
+                        __fs32  fs_qfmask[2];   /* ~usb_fmask */
+                        __fs32  fs_state;       /* file system state time stamp */
+                } fs_44;
+        } fs_u2;
+        __fs32  fs_postblformat;        /* format of positional layout tables */
+        __fs32  fs_nrpos;               /* number of rotational positions */
+        __fs32  fs_postbloff;           /* (__s16) rotation block list head */
+        __fs32  fs_rotbloff;            /* (__u8) blocks for each rotation */
+        __fs32  fs_magic;               /* magic number */
+        __u8    fs_space[1];            /* list of blocks for each rotation */
+};
+
+/*
+ * Preference for optimization.
+ */
+#define UFS_OPTTIME     0       /* minimize allocation time */
+#define UFS_OPTSPACE    1       /* minimize disk fragmentation */
+
+/*
+ * Rotational layout table format types
+ */
+#define UFS_42POSTBLFMT         -1      /* 4.2BSD rotational table format */
+#define UFS_DYNAMICPOSTBLFMT    1       /* dynamic rotational table format */
+
+/*
+ * Convert cylinder group to base address of its global summary info.
+ */
+#define fs_cs(indx) \
+        s_csp[(indx) >> uspi->s_csshift][(indx) & ~uspi->s_csmask]
+
+/*
+ * Cylinder group block for a file system.
+ *
+ * Writable fields in the cylinder group are protected by the associated
+ * super block lock fs->fs_lock.
+ */
+#define CG_MAGIC        0x090255
+#define ufs_cg_chkmagic(sb, ucg) \
+        (fs32_to_cpu((sb), (ucg)->cg_magic) == CG_MAGIC)
+
+/*
+ * size of this structure is 172 B
+ */
+struct  ufs_cylinder_group {
+        __fs32  cg_link;                /* linked list of cyl groups */
+        __fs32  cg_magic;               /* magic number */
+        __fs32  cg_time;                /* time last written */
+        __fs32  cg_cgx;                 /* we are the cgx'th cylinder group */
+        __fs16  cg_ncyl;                /* number of cyl's this cg */
+        __fs16  cg_niblk;               /* number of inode blocks this cg */
+        __fs32  cg_ndblk;               /* number of data blocks this cg */
+        struct  ufs_csum cg_cs;         /* cylinder summary information */
+        __fs32  cg_rotor;               /* position of last used block */
+        __fs32  cg_frotor;              /* position of last used frag */
+        __fs32  cg_irotor;              /* position of last used inode */
+        __fs32  cg_frsum[UFS_MAXFRAG];  /* counts of available frags */
+        __fs32  cg_btotoff;             /* (__u32) block totals per cylinder */
+        __fs32  cg_boff;                /* (short) free block positions */
+        __fs32  cg_iusedoff;            /* (char) used inode map */
+        __fs32  cg_freeoff;             /* (u_char) free block map */
+        __fs32  cg_nextfreeoff;         /* (u_char) next available space */
+        union {
+                struct {
+                        __fs32  cg_clustersumoff;       /* (u_int32) counts of avail clusters */
+                        __fs32  cg_clusteroff;          /* (u_int8) free cluster map */
+                        __fs32  cg_nclusterblks;        /* number of clusters this cg */
+                        __fs32  cg_sparecon[13];        /* reserved for future use */
+                } cg_44;
+                struct {
+                        __fs32  cg_clustersumoff;/* (u_int32) counts of avail clusters */
+                        __fs32  cg_clusteroff;  /* (u_int8) free cluster map */
+                        __fs32  cg_nclusterblks;/* number of clusters this cg */
+                        __fs32   cg_niblk; /* number of inode blocks this cg */
+                        __fs32   cg_initediblk; /* last initialized inode */
+                        __fs32   cg_sparecon32[3];/* reserved for future use */
+                        __fs64   cg_time;       /* time last written */
+                        __fs64  cg_sparecon[3]; /* reserved for future use */
+                } cg_u2;
+                __fs32  cg_sparecon[16];        /* reserved for future use */
+        } cg_u;
+        __u8    cg_space[1];            /* space for cylinder group maps */
+/* actually longer */
+};
+
+/*
+ * structure of an on-disk inode
+ */
+struct ufs_inode {
+        __fs16  ui_mode;                /*  0x0 */
+        __fs16  ui_nlink;               /*  0x2 */
+        union {
+                struct {
+                        __fs16  ui_suid;        /*  0x4 */
+                        __fs16  ui_sgid;        /*  0x6 */
+                } oldids;
+                __fs32  ui_inumber;             /*  0x4 lsf: inode number */
+                __fs32  ui_author;              /*  0x4 GNU HURD: author */
+        } ui_u1;
+        __fs64  ui_size;                /*  0x8 */
+        struct ufs_timeval ui_atime;    /* 0x10 access */
+        struct ufs_timeval ui_mtime;    /* 0x18 modification */
+        struct ufs_timeval ui_ctime;    /* 0x20 creation */
+        union {
+                struct {
+                        __fs32  ui_db[UFS_NDADDR];/* 0x28 data blocks */
+                        __fs32  ui_ib[UFS_NINDIR];/* 0x58 indirect blocks */
+                } ui_addr;
+                __u8    ui_symlink[4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */
+        } ui_u2;
+        __fs32  ui_flags;               /* 0x64 immutable, append-only... */
+        __fs32  ui_blocks;              /* 0x68 blocks in use */
+        __fs32  ui_gen;                 /* 0x6c like ext2 i_version, for NFS support */
+        union {
+                struct {
+                        __fs32  ui_shadow;      /* 0x70 shadow inode with security data */
+                        __fs32  ui_uid;         /* 0x74 long EFT version of uid */
+                        __fs32  ui_gid;         /* 0x78 long EFT version of gid */
+                        __fs32  ui_oeftflag;    /* 0x7c reserved */
+                } ui_sun;
+                struct {
+                        __fs32  ui_uid;         /* 0x70 File owner */
+                        __fs32  ui_gid;         /* 0x74 File group */
+                        __fs32  ui_spare[2];    /* 0x78 reserved */
+                } ui_44;
+                struct {
+                        __fs32  ui_uid;         /* 0x70 */
+                        __fs32  ui_gid;         /* 0x74 */
+                        __fs16  ui_modeh;       /* 0x78 mode high bits */
+                        __fs16  ui_spare;       /* 0x7A unused */
+                        __fs32  ui_trans;       /* 0x7c filesystem translator */
+                } ui_hurd;
+        } ui_u3;
+};
+
+#define UFS_NXADDR  2            /* External addresses in inode. */
+struct ufs2_inode {
+        __fs16     ui_mode;        /*   0: IFMT, permissions; see below. */
+        __fs16     ui_nlink;       /*   2: File link count. */
+        __fs32     ui_uid;         /*   4: File owner. */
+        __fs32     ui_gid;         /*   8: File group. */
+        __fs32     ui_blksize;     /*  12: Inode blocksize. */
+        __fs64     ui_size;        /*  16: File byte count. */
+        __fs64     ui_blocks;      /*  24: Bytes actually held. */
+        struct ufs_timeval   ui_atime;       /*  32: Last access time. */
+        struct ufs_timeval   ui_mtime;       /*  40: Last modified time. */
+        struct ufs_timeval   ui_ctime;       /*  48: Last inode change time. */
+        struct ufs_timeval   ui_birthtime;   /*  56: Inode creation time. */
+        __fs32     ui_mtimensec;   /*  64: Last modified time. */
+        __fs32     ui_atimensec;   /*  68: Last access time. */
+        __fs32     ui_ctimensec;   /*  72: Last inode change time. */
+        __fs32     ui_birthnsec;   /*  76: Inode creation time. */
+        __fs32     ui_gen;         /*  80: Generation number. */
+        __fs32     ui_kernflags;   /*  84: Kernel flags. */
+        __fs32     ui_flags;       /*  88: Status flags (chflags). */
+        __fs32     ui_extsize;     /*  92: External attributes block. */
+        __fs64     ui_extb[UFS_NXADDR];/*  96: External attributes block. */
+        union {
+                struct {
+                        __fs64     ui_db[UFS_NDADDR]; /* 112: Direct disk blocks. */
+                        __fs64     ui_ib[UFS_NINDIR];/* 208: Indirect disk blocks.*/
+                } ui_addr;
+        __u8    ui_symlink[2*4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */
+        } ui_u2;
+        __fs64     ui_spare[3];    /* 232: Reserved; currently unused */
+};
+
+
+/* FreeBSD has these in sys/stat.h */
+/* ui_flags that can be set by a file owner */
+#define UFS_UF_SETTABLE   0x0000ffff
+#define UFS_UF_NODUMP     0x00000001  /* do not dump */
+#define UFS_UF_IMMUTABLE  0x00000002  /* immutable (can't "change") */
+#define UFS_UF_APPEND     0x00000004  /* append-only */
+#define UFS_UF_OPAQUE     0x00000008  /* directory is opaque (unionfs) */
+#define UFS_UF_NOUNLINK   0x00000010  /* can't be removed or renamed */
+/* ui_flags that only root can set */
+#define UFS_SF_SETTABLE   0xffff0000
+#define UFS_SF_ARCHIVED   0x00010000  /* archived */
+#define UFS_SF_IMMUTABLE  0x00020000  /* immutable (can't "change") */
+#define UFS_SF_APPEND     0x00040000  /* append-only */
+#define UFS_SF_NOUNLINK   0x00100000  /* can't be removed or renamed */
+
+/*
+ * This structure is used for reading disk structures larger
+ * than the size of fragment.
+ */
+struct ufs_buffer_head {
+        __u64 fragment;                 /* first fragment */
+        __u64 count;                            /* number of fragments */
+        struct buffer_head * bh[UFS_MAXFRAG];   /* buffers */
+};
+
+struct ufs_cg_private_info {
+        struct ufs_cylinder_group ucg;
+        __u32   c_cgx;          /* number of cylidner group */
+        __u16   c_ncyl;         /* number of cyl's this cg */
+        __u16   c_niblk;        /* number of inode blocks this cg */
+        __u32   c_ndblk;        /* number of data blocks this cg */
+        __u32   c_rotor;        /* position of last used block */
+        __u32   c_frotor;       /* position of last used frag */
+        __u32   c_irotor;       /* position of last used inode */
+        __u32   c_btotoff;      /* (__u32) block totals per cylinder */
+        __u32   c_boff;         /* (short) free block positions */
+        __u32   c_iusedoff;     /* (char) used inode map */
+        __u32   c_freeoff;      /* (u_char) free block map */
+        __u32   c_nextfreeoff;  /* (u_char) next available space */
+        __u32   c_clustersumoff;/* (u_int32) counts of avail clusters */
+        __u32   c_clusteroff;   /* (u_int8) free cluster map */
+        __u32   c_nclusterblks; /* number of clusters this cg */
+};      
+
+struct ufs_sb_private_info {
+        struct ufs_buffer_head s_ubh; /* buffer containing super block */
+        __u32   s_sblkno;       /* offset of super-blocks in filesys */
+        __u32   s_cblkno;       /* offset of cg-block in filesys */
+        __u32   s_iblkno;       /* offset of inode-blocks in filesys */
+        __u32   s_dblkno;       /* offset of first data after cg */
+        __u32   s_cgoffset;     /* cylinder group offset in cylinder */
+        __u32   s_cgmask;       /* used to calc mod fs_ntrak */
+        __u32   s_size;         /* number of blocks (fragments) in fs */
+        __u32   s_dsize;        /* number of data blocks in fs */
+        __u64   s_u2_size;      /* ufs2: number of blocks (fragments) in fs */
+        __u64   s_u2_dsize;     /*ufs2:  number of data blocks in fs */
+        __u32   s_ncg;          /* number of cylinder groups */
+        __u32   s_bsize;        /* size of basic blocks */
+        __u32   s_fsize;        /* size of fragments */
+        __u32   s_fpb;          /* fragments per block */
+        __u32   s_minfree;      /* minimum percentage of free blocks */
+        __u32   s_bmask;        /* `blkoff'' calc of blk offsets */
+        __u32   s_fmask;        /* s_fsize mask */
+        __u32   s_bshift;       /* `lblkno'' calc of logical blkno */
+        __u32   s_fshift;       /* s_fsize shift */
+        __u32   s_fpbshift;     /* fragments per block shift */
+        __u32   s_fsbtodb;      /* fsbtodb and dbtofsb shift constant */
+        __u32   s_sbsize;       /* actual size of super block */
+        __u32   s_csmask;       /* csum block offset */
+        __u32   s_csshift;      /* csum block number */
+        __u32   s_nindir;       /* value of NINDIR */
+        __u32   s_inopb;        /* value of INOPB */
+        __u32   s_nspf;         /* value of NSPF */
+        __u32   s_npsect;       /* # sectors/track including spares */
+        __u32   s_interleave;   /* hardware sector interleave */
+        __u32   s_trackskew;    /* sector 0 skew, per track */
+        __u32   s_csaddr;       /* blk addr of cyl grp summary area */
+        __u32   s_cssize;       /* size of cyl grp summary area */
+        __u32   s_cgsize;       /* cylinder group size */
+        __u32   s_ntrak;        /* tracks per cylinder */
+        __u32   s_nsect;        /* sectors per track */
+        __u32   s_spc;          /* sectors per cylinder */
+        __u32   s_ipg;          /* inodes per cylinder group */
+        __u32   s_fpg;          /* fragments per group */
+        __u32   s_cpc;          /* cyl per cycle in postbl */
+        __s32   s_contigsumsize;/* size of cluster summary array, 44bsd */
+        __s64   s_qbmask;       /* ~usb_bmask */
+        __s64   s_qfmask;       /* ~usb_fmask */
+        __s32   s_postblformat; /* format of positional layout tables */
+        __s32   s_nrpos;        /* number of rotational positions */
+        __s32   s_postbloff;    /* (__s16) rotation block list head */
+        __s32   s_rotbloff;     /* (__u8) blocks for each rotation */
+
+        __u32   s_fpbmask;      /* fragments per block mask */
+        __u32   s_apb;          /* address per block */
+        __u32   s_2apb;         /* address per block^2 */
+        __u32   s_3apb;         /* address per block^3 */
+        __u32   s_apbmask;      /* address per block mask */
+        __u32   s_apbshift;     /* address per block shift */
+        __u32   s_2apbshift;    /* address per block shift * 2 */
+        __u32   s_3apbshift;    /* address per block shift * 3 */
+        __u32   s_nspfshift;    /* number of sector per fragment shift */
+        __u32   s_nspb;         /* number of sector per block */
+        __u32   s_inopf;        /* inodes per fragment */
+        __u32   s_sbbase;       /* offset of NeXTstep superblock */
+        __u32   s_bpf;          /* bits per fragment */
+        __u32   s_bpfshift;     /* bits per fragment shift*/
+        __u32   s_bpfmask;      /* bits per fragment mask */
+
+        __u32   s_maxsymlinklen;/* upper limit on fast symlinks' size */
+        __s32   fs_magic;       /* filesystem magic */
+};
+
+/*
+ * Sizes of this structures are:
+ *      ufs_super_block_first   512
+ *      ufs_super_block_second  512
+ *      ufs_super_block_third   356
+ */
+struct ufs_super_block_first {
+        __fs32  fs_link;
+        __fs32  fs_rlink;
+        __fs32  fs_sblkno;
+        __fs32  fs_cblkno;
+        __fs32  fs_iblkno;
+        __fs32  fs_dblkno;
+        __fs32  fs_cgoffset;
+        __fs32  fs_cgmask;
+        __fs32  fs_time;
+        __fs32  fs_size;
+        __fs32  fs_dsize;
+        __fs32  fs_ncg;
+        __fs32  fs_bsize;
+        __fs32  fs_fsize;
+        __fs32  fs_frag;
+        __fs32  fs_minfree;
+        __fs32  fs_rotdelay;
+        __fs32  fs_rps;
+        __fs32  fs_bmask;
+        __fs32  fs_fmask;
+        __fs32  fs_bshift;
+        __fs32  fs_fshift;
+        __fs32  fs_maxcontig;
+        __fs32  fs_maxbpg;
+        __fs32  fs_fragshift;
+        __fs32  fs_fsbtodb;
+        __fs32  fs_sbsize;
+        __fs32  fs_csmask;
+        __fs32  fs_csshift;
+        __fs32  fs_nindir;
+        __fs32  fs_inopb;
+        __fs32  fs_nspf;
+        __fs32  fs_optim;
+        union {
+                struct {
+                        __fs32  fs_npsect;
+                } fs_sun;
+                struct {
+                        __fs32  fs_state;
+                } fs_sunx86;
+        } fs_u1;
+        __fs32  fs_interleave;
+        __fs32  fs_trackskew;
+        __fs32  fs_id[2];
+        __fs32  fs_csaddr;
+        __fs32  fs_cssize;
+        __fs32  fs_cgsize;
+        __fs32  fs_ntrak;
+        __fs32  fs_nsect;
+        __fs32  fs_spc;
+        __fs32  fs_ncyl;
+        __fs32  fs_cpg;
+        __fs32  fs_ipg;
+        __fs32  fs_fpg;
+        struct ufs_csum fs_cstotal;
+        __s8    fs_fmod;
+        __s8    fs_clean;
+        __s8    fs_ronly;
+        __s8    fs_flags;
+        __s8    fs_fsmnt[UFS_MAXMNTLEN - 212];
+
+};
+
+struct ufs_super_block_second {
+        __s8    fs_fsmnt[212];
+        __fs32  fs_cgrotor;
+        __fs32  fs_csp[UFS_MAXCSBUFS];
+        __fs32  fs_maxcluster;
+        __fs32  fs_cpc;
+        __fs16  fs_opostbl[82];
+};      
+
+struct ufs_super_block_third {
+        __fs16  fs_opostbl[46];
+        union {
+                struct {
+                        __fs32  fs_sparecon[53];/* reserved for future constants */
+                        __fs32  fs_reclaim;
+                        __fs32  fs_sparecon2[1];
+                        __fs32  fs_state;       /* file system state time stamp */
+                        __fs32  fs_qbmask[2];   /* ~usb_bmask */
+                        __fs32  fs_qfmask[2];   /* ~usb_fmask */
+                } fs_sun;
+                struct {
+                        __fs32  fs_sparecon[53];/* reserved for future constants */
+                        __fs32  fs_reclaim;
+                        __fs32  fs_sparecon2[1];
+                        __fs32  fs_npsect;      /* # sectors/track including spares */
+                        __fs32  fs_qbmask[2];   /* ~usb_bmask */
+                        __fs32  fs_qfmask[2];   /* ~usb_fmask */
+                } fs_sunx86;
+                struct {
+                        __fs32  fs_sparecon[50];/* reserved for future constants */
+                        __fs32  fs_contigsumsize;/* size of cluster summary array */
+                        __fs32  fs_maxsymlinklen;/* max length of an internal symlink */
+                        __fs32  fs_inodefmt;    /* format of on-disk inodes */
+                        __fs32  fs_maxfilesize[2];      /* max representable file size */
+                        __fs32  fs_qbmask[2];   /* ~usb_bmask */
+                        __fs32  fs_qfmask[2];   /* ~usb_fmask */
+                        __fs32  fs_state;       /* file system state time stamp */
+                } fs_44;
+        } fs_u2;
+        __fs32  fs_postblformat;
+        __fs32  fs_nrpos;
+        __fs32  fs_postbloff;
+        __fs32  fs_rotbloff;
+        __fs32  fs_magic;
+        __u8    fs_space[1];
+};
+
+#ifdef __KERNEL__
+
+/* balloc.c */
+extern void ufs_free_fragments (struct inode *, unsigned, unsigned);
+extern void ufs_free_blocks (struct inode *, unsigned, unsigned);
+extern unsigned ufs_new_fragments (struct inode *, __fs32 *, unsigned, unsigned, unsigned, int *);
+
+/* cylinder.c */
+extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
+extern void ufs_put_cylinder (struct super_block *, unsigned);
+
+/* dir.c */
+extern struct inode_operations ufs_dir_inode_operations;
+extern int ufs_add_link (struct dentry *, struct inode *);
+extern ino_t ufs_inode_by_name(struct inode *, struct dentry *);
+extern int ufs_make_empty(struct inode *, struct inode *);
+extern struct ufs_dir_entry * ufs_find_entry (struct dentry *, struct buffer_head **);
+extern int ufs_delete_entry (struct inode *, struct ufs_dir_entry *, struct buffer_head *);
+extern int ufs_empty_dir (struct inode *);
+extern struct ufs_dir_entry * ufs_dotdot (struct inode *, struct buffer_head **);
+extern void ufs_set_link(struct inode *, struct ufs_dir_entry *, struct buffer_head *, struct inode *);
+
+/* file.c */
+extern struct inode_operations ufs_file_inode_operations;
+extern struct file_operations ufs_file_operations;
+
+extern struct address_space_operations ufs_aops;
+
+/* ialloc.c */
+extern void ufs_free_inode (struct inode *inode);
+extern struct inode * ufs_new_inode (struct inode *, int);
+
+/* inode.c */
+extern u64  ufs_frag_map (struct inode *, sector_t);
+extern void ufs_read_inode (struct inode *);
+extern void ufs_put_inode (struct inode *);
+extern int ufs_write_inode (struct inode *, int);
+extern int ufs_sync_inode (struct inode *);
+extern void ufs_delete_inode (struct inode *);
+extern struct buffer_head * ufs_getfrag (struct inode *, unsigned, int, int *);
+extern struct buffer_head * ufs_bread (struct inode *, unsigned, int, int *);
+
+/* namei.c */
+extern struct file_operations ufs_dir_operations;
+        
+/* super.c */
+extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
+extern void ufs_error (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
+extern void ufs_panic (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
+
+/* symlink.c */
+extern struct inode_operations ufs_fast_symlink_inode_operations;
+
+/* truncate.c */
+extern void ufs_truncate (struct inode *);
+
+static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
+{
+        return sb->s_fs_info;
+}
+
+static inline struct ufs_inode_info *UFS_I(struct inode *inode)
+{
+        return container_of(inode, struct ufs_inode_info, vfs_inode);
+}
+
+#endif  /* __KERNEL__ */
+
+#endif /* __LINUX_UFS_FS_H */