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freebsd-dev/sys/fs/hpfs/hpfs.h

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/*-
* Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org)
* 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.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 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.
*
* $FreeBSD$
*/
/*#define HPFS_DEBUG 10*/
typedef u_int32_t lsn_t; /* Logical Sector Number */
typedef struct {
lsn_t lsn1;
lsn_t lsn2;
} rsp_t; /* Redundant Sector Pointer */
typedef struct {
u_int32_t cnt;
lsn_t lsn;
} sptr_t; /* Storage Pointer */
#define SUBLOCK 0x10
#define SUSIZE DEV_BSIZE
#define SPBLOCK 0x11
#define SPSIZE DEV_BSIZE
#define BMSIZE (4 * DEV_BSIZE)
#define HPFS_MAXFILENAME 255
#define SU_MAGIC ((u_int64_t)0xFA53E9C5F995E849)
struct sublock {
u_int64_t su_magic;
u_int8_t su_hpfsver;
u_int8_t su_fnctver;
u_int16_t unused;
lsn_t su_rootfno; /* Root Fnode */
u_int32_t su_btotal; /* Total blocks */
u_int32_t su_badbtotal; /* Bad Sectors total */
rsp_t su_bitmap;
rsp_t su_badbl;
u_long su_chkdskdate;
u_long su_dskoptdate;
u_int32_t su_dbbsz; /* Sectors in DirBlock Band */
lsn_t su_dbbstart;
lsn_t su_dbbend;
lsn_t su_dbbbitmap;
char su_volname[0x20];
lsn_t su_uidt; /* Ptr to User ID Table (8 sect) */
};
#define SP_MAGIC ((u_int64_t)0xFA5229C5F9911849)
#define SP_DIRTY 0x0001
#define SP_SPDBINUSE 0x0002
#define SP_HFINUSE 0x0004
#define SP_BADSECT 0x0008
#define SP_BADBMBL 0x0010
#define SP_FASTFRMT 0x0020
#define SP_OLDHPFS 0x0080
#define SP_IDASD 0x0100
#define SP_RDASD 0x0200
#define SP_DASD 0x0400
#define SP_MMACTIVE 0x0800
#define SP_DCEACLS 0x1000
#define SP_DSADDIRTY 0x2000
struct spblock {
u_int64_t sp_magic;
u_int16_t sp_flag;
u_int8_t sp_mmcontf;
u_int8_t unused;
lsn_t sp_hf; /* HotFix list */
u_int32_t sp_hfinuse; /* HotFixes in use */
u_int32_t sp_hfavail; /* HotFixes available */
u_int32_t sp_spdbavail; /* Spare DirBlocks available */
u_int32_t sp_spdbmax; /* Spare DirBlocks maximum */
lsn_t sp_cpi;
u_int32_t sp_cpinum;
u_int32_t sp_suchecksum;
u_int32_t sp_spchecksum;
u_int8_t reserved[0x3C];
lsn_t sp_spdb[0x65];
};
#define DE_SPECIAL 0x0001
#define DE_ACL 0x0002
#define DE_DOWN 0x0004
#define DE_END 0x0008
#define DE_EALIST 0x0010
#define DE_EPERM 0x0020
#define DE_EXPLACL 0x0040
#define DE_NEEDEA 0x0080
#define DE_RONLY 0x0100
#define DE_HIDDEN 0x0200
#define DE_SYSTEM 0x0400
#define DE_VOLLABEL 0x0800
#define DE_DIR 0x1000
#define DE_ARCHIV 0x2000
#define DE_DOWNLSN(dep) (*(lsn_t *)((caddr_t)(dep) + (dep)->de_reclen - sizeof(lsn_t)))
#define DE_NEXTDE(dep) ((struct hpfsdirent *)((caddr_t)(dep) + (dep)->de_reclen))
typedef struct hpfsdirent {
u_int16_t de_reclen;
u_int16_t de_flag;
lsn_t de_fnode;
u_long de_mtime;
u_int32_t de_size;
u_long de_atime;
u_long de_ctime;
u_int32_t de_ealen;
u_int8_t de_flexflag;
u_int8_t de_cpid;
u_int8_t de_namelen;
char de_name[1];
/* ... de_flex; */
/* lsn_t de_down; */
} hpfsdirent_t;
#define D_BSIZE (DEV_BSIZE*4)
#define D_MAGIC 0x77E40AAE
#define D_DIRENT(dbp) ((hpfsdirent_t *)((caddr_t)dbp + sizeof(dirblk_t)))
#define D_DE(dbp, deoff) ((hpfsdirent_t *)((caddr_t)dbp + sizeof(dirblk_t) + (deoff)))
typedef struct dirblk {
u_int32_t d_magic;
u_int32_t d_freeoff; /* Offset of first free byte */
u_int32_t d_chcnt; /* Change count */
lsn_t d_parent;
lsn_t d_self;
} dirblk_t;
/*
* Allocation Block (ALBLK)
*/
#define AB_HBOFFEO 0x01
#define AB_FNPARENT 0x20
#define AB_SUGGBSCH 0x40
#define AB_NODES 0x80
#define AB_ALLEAF(abp) ((alleaf_t *)((caddr_t)(abp) + sizeof(alblk_t)))
#define AB_ALNODE(abp) ((alnode_t *)((caddr_t)(abp) + sizeof(alblk_t)))
#define AB_FREEALP(abp) ((alleaf_t *)((caddr_t)(abp) + (abp)->ab_freeoff))
#define AB_FREEANP(abp) ((alnode_t *)((caddr_t)(abp) + (abp)->ab_freeoff))
#define AB_LASTALP(abp) (AB_ALLEAF(abp) + (abp)->ab_busycnt - 1)
#define AB_LASTANP(abp) (AB_ALNODE(abp) + (abp)->ab_busycnt - 1)
#define AB_ADDNREC(abp, sz, n) { \
(abp)->ab_busycnt += (n); \
(abp)->ab_freecnt -= (n); \
(abp)->ab_freeoff += (n) * (sz); \
}
#define AB_RMNREC(abp, sz, n) { \
(abp)->ab_busycnt -= (n); \
(abp)->ab_freecnt += (n); \
(abp)->ab_freeoff -= (n) * (sz);\
}
#define AB_ADDAL(abp) AB_ADDNREC(abp,sizeof(alleaf_t), 1)
#define AB_ADDAN(abp) AB_ADDNREC(abp,sizeof(alnode_t), 1)
#define AB_RMAL(abp) AB_RMNREC(abp,sizeof(alleaf_t), 1)
#define AB_RMAN(abp) AB_RMNREC(abp,sizeof(alnode_t), 1)
typedef struct alblk {
u_int8_t ab_flag;
u_int8_t ab_res[3];
u_int8_t ab_freecnt;
u_int8_t ab_busycnt;
u_int16_t ab_freeoff;
} alblk_t;
/*
* FNode
*/
#define FNODESIZE DEV_BSIZE
#define FN_MAGIC 0xF7E40AAE
struct fnode {
u_int32_t fn_magic;
u_int64_t fn_readhist;
u_int8_t fn_namelen;
char fn_name[0xF]; /* First 15 symbols or less */
lsn_t fn_parent;
sptr_t fn_extacl;
u_int16_t fn_acllen;
u_int8_t fn_extaclflag;
u_int8_t fn_histbitcount;
sptr_t fn_extea;
u_int16_t fn_ealen; /* Len of EAs in Fnode */
u_int8_t fn_exteaflag; /* EAs in exteas */
u_int8_t fn_flag;
alblk_t fn_ab;
u_int8_t fn_abd[0x60];
u_int32_t fn_size;
u_int32_t fn_reqea;
u_int8_t fn_uid[0x10];
u_int16_t fn_intoff;
u_int8_t fn_1dasdthr;
u_int8_t fn_dasdthr;
u_int32_t fn_dasdlim;
u_int32_t fn_dasdusage;
u_int8_t fn_int[0x13c];
};
#define EA_NAME(eap) ((char *)(((caddr_t)(eap)) + sizeof(struct ea)))
struct ea {
u_int8_t ea_type; /* 0 - plain val */
/* 1 - sptr to val */
/* 3 - lsn point to AlSec, cont. val */
u_int8_t ea_namelen;
u_int16_t ea_vallen;
/*u_int8_t ea_name[]; */
/*u_int8_t ea_val[]; */
};
/*
* Allocation Block Data (ALNODE)
*
* NOTE: AlNodes are used when there are too many fragments
* to represent the data in the AlBlk
*/
#define AN_SET(anp,nextoff,lsn) { \
(anp)->an_nextoff = (nextoff); \
(anp)->an_lsn = (lsn); \
}
typedef struct alnode {
u_int32_t an_nextoff; /* next node offset in blocks */
lsn_t an_lsn; /* position of AlSec structure */
} alnode_t;
/*
* Allocaion Block Data (ALLEAF)
*
* NOTE: Leaves are used to point at contiguous block of data
* (a fragment or an "extent");
*/
#define AL_SET(alp,off,len,lsn) { \
(alp)->al_off = (off); \
(alp)->al_len = (len); \
(alp)->al_lsn = (lsn); \
}
typedef struct alleaf {
u_int32_t al_off; /* offset in blocks */
u_int32_t al_len; /* len in blocks */
lsn_t al_lsn; /* phys position */
} alleaf_t;
/*
* Allocation Sector
*
* NOTE: AlSecs are not initialized before use, so they ussually
* look full of junk. Use the AlBlk tto validate the data.
*/
#define AS_MAGIC 0x37E40AAE
typedef struct alsec {
u_int32_t as_magic;
lsn_t as_self;
lsn_t as_parent;
alblk_t as_ab;
u_int8_t as_abd[0x1E0];
} alsec_t;
/*
* Code Page structures
*/
struct cpdblk {
u_int16_t b_country; /* Country code */
u_int16_t b_cpid; /* CP ID */
u_int16_t b_dbcscnt; /* Count of DBCS ranges in CP */
char b_upcase[0x80]; /* Case conversion table */
u_int16_t b_dbcsrange; /* Start/End DBCS range pairs */
};
#define CPD_MAGIC ((u_int32_t)0x894521F7)
struct cpdsec {
u_int32_t d_magic;
u_int16_t d_cpcnt; /* CP Data count */
u_int16_t d_cpfirst; /* Index of first CP Data */
u_int32_t d_checksum[3]; /* CP Data checksumms */
u_int16_t d_offset[3]; /* Offsets of CP Data blocks */
struct cpdblk d_cpdblk[3]; /* Array of CP Data Blocks */
};
struct cpiblk {
u_int16_t b_country; /* Country code */
u_int16_t b_cpid; /* CP ID */
u_int32_t b_checksum;
lsn_t b_cpdsec; /* Pointer to CP Data Sector */
u_int16_t b_vcpid; /* Volume spec. CP ID */
u_int16_t b_dbcscnt; /* Count of DBCS ranges in CP */
};
#define CPI_MAGIC ((u_int32_t)0x494521F7)
struct cpisec {
u_int32_t s_magic;
u_int32_t s_cpicnt; /* Count of CPI's in this sector */
u_int32_t s_cpifirst; /* Index of first CPI in this sector */
lsn_t s_next; /* Pointer to next CPI Sector */
struct cpiblk s_cpi[0x1F]; /* Array of CPI blocks */
};
struct hpfsmount {
struct sublock hpm_su;
struct spblock hpm_sp;
struct mount * hpm_mp;
struct vnode * hpm_devvp;
dev_t hpm_dev;
uid_t hpm_uid;
gid_t hpm_gid;
mode_t hpm_mode;
lsn_t * hpm_bmind;
struct cpdblk * hpm_cpdblk; /* Array of CP Data Blocks */
u_char hpm_u2d[0x80]; /* Unix to DOS Table*/
u_char hpm_d2u[0x80]; /* DOS to Unix Table*/
u_long hpm_bavail; /* Blocks available */
u_long hpm_dbnum; /* Data Band number */
u_int8_t * hpm_bitmap;
};
#define H_HASHED 0x0001 /* Present in hash */
#define H_PARVALID 0x0002 /* parent info is valid */
#define H_CHANGE 0x0004 /* node date was changed */
#define H_PARCHANGE 0x0008 /* parent node date was changed */
#define H_INVAL 0x0010 /* Invalid node */
struct hpfsnode {
struct lock h_lock; /* Must be first, for std vops */
struct mtx h_interlock;
LIST_ENTRY(hpfsnode) h_hash;
struct hpfsmount *h_hpmp;
struct fnode h_fn;
struct vnode * h_vp;
struct vnode * h_devvp;
dev_t h_dev;
lsn_t h_no;
uid_t h_uid;
gid_t h_gid;
mode_t h_mode;
u_int32_t h_flag;
/* parent dir information */
u_long h_mtime;
u_long h_atime;
u_long h_ctime;
char h_name[HPFS_MAXFILENAME+1]; /* Used to speedup dirent */
int h_namelen; /* lookup */
};
/* This overlays the fid structure (see <sys/mount.h>) */
struct hpfid {
u_int16_t hpfid_len; /* Length of structure. */
u_int16_t hpfid_pad; /* Force 32-bit alignment. */
lsn_t hpfid_ino; /* File number (ino). */
int32_t hpfid_gen; /* Generation number. */
};
#if defined(HPFS_DEBUG)
#define dprintf(a) printf a
#if HPFS_DEBUG > 1
#define ddprintf(a) printf a
#else
#define ddprintf(a)
#endif
#else
#define dprintf(a)
#define ddprintf(a)
#endif
#if __FreeBSD_version >= 300000
MALLOC_DECLARE(M_HPFSMNT);
MALLOC_DECLARE(M_HPFSNO);
#endif
#define VFSTOHPFS(mp) ((struct hpfsmount *)((mp)->mnt_data))
#define VTOHP(v) ((struct hpfsnode *)((v)->v_data))
#define HPTOV(h) ((struct vnode *)((h)->h_vp))
#define FID(f) (*((lsn_t *)(f)->fid_data))
extern vop_t ** hpfs_vnodeop_p;
/* Hash routines, too small to be separate header */
void hpfs_hphashinit __P((void));
void hpfs_hphashdestroy __P((void));
struct hpfsnode *hpfs_hphashlookup __P((dev_t, lsn_t));
struct hpfsnode *hpfs_hphashget __P((dev_t, lsn_t));
struct vnode *hpfs_hphashvget __P((dev_t, lsn_t, struct thread *));
void hpfs_hphashins __P((register struct hpfsnode *));
void hpfs_hphashrem __P((register struct hpfsnode *));
extern struct lock hpfs_hphash_lock;
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