sys/vfs/hpfs/hpfs.h

   1 /*-
   2  * Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org)
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/fs/hpfs/hpfs.h,v 1.1 1999/12/09 19:09:58 semenu Exp $
  27  */
  28
  29 /*#define HPFS_DEBUG 10*/
  30 typedef u_int32_t lsn_t;        /* Logical Sector Number */
  31 typedef struct {
  32         lsn_t   lsn1;
  33         lsn_t   lsn2;
  34 } rsp_t;                        /* Redundant Sector Pointer */
  35 typedef struct {
  36         u_int32_t cnt;
  37         lsn_t   lsn;
  38 } sptr_t;                       /* Storage Pointer */
  39
  40 #define SUBLOCK 0x10
  41 #define SUSIZE  DEV_BSIZE
  42 #define SPBLOCK 0x11
  43 #define SPSIZE  DEV_BSIZE
  44 #define BMSIZE  (4 * DEV_BSIZE)
  45 #define HPFS_MAXFILENAME        255
  46
  47 #define SU_MAGIC        ((u_int64_t)0xFA53E9C5F995E849ULL)
  48 struct sublock {
  49         u_int64_t       su_magic;
  50         u_int8_t        su_hpfsver;
  51         u_int8_t        su_fnctver;
  52         u_int16_t       unused;
  53         lsn_t           su_rootfno;     /* Root Fnode */
  54         u_int32_t       su_btotal;      /* Total blocks */
  55         u_int32_t       su_badbtotal;   /* Bad Sectors total */
  56         rsp_t           su_bitmap;
  57         rsp_t           su_badbl;
  58         u_long          su_chkdskdate;
  59         u_long          su_dskoptdate;
  60         u_int32_t       su_dbbsz;       /* Sectors in DirBlock Band */
  61         lsn_t           su_dbbstart;
  62         lsn_t           su_dbbend;
  63         lsn_t           su_dbbbitmap;
  64         char            su_volname[0x20];
  65         lsn_t           su_uidt;        /* Ptr to User ID Table (8 sect) */
  66 };
  67
  68 #define SP_MAGIC        ((u_int64_t)0xFA5229C5F9911849ULL)
  69 #define SP_DIRTY        0x0001
  70 #define SP_SPDBINUSE    0x0002
  71 #define SP_HFINUSE      0x0004
  72 #define SP_BADSECT      0x0008
  73 #define SP_BADBMBL      0x0010
  74 #define SP_FASTFRMT     0x0020
  75 #define SP_OLDHPFS      0x0080
  76 #define SP_IDASD        0x0100
  77 #define SP_RDASD        0x0200
  78 #define SP_DASD         0x0400
  79 #define SP_MMACTIVE     0x0800
  80 #define SP_DCEACLS      0x1000
  81 #define SP_DSADDIRTY    0x2000
  82 struct spblock {
  83         u_int64_t       sp_magic;
  84         u_int16_t       sp_flag;
  85         u_int8_t        sp_mmcontf;
  86         u_int8_t        unused;
  87         lsn_t           sp_hf;          /* HotFix list */
  88         u_int32_t       sp_hfinuse;     /* HotFixes in use */
  89         u_int32_t       sp_hfavail;     /* HotFixes available */
  90         u_int32_t       sp_spdbavail;   /* Spare DirBlocks available */
  91         u_int32_t       sp_spdbmax;     /* Spare DirBlocks maximum */
  92         lsn_t           sp_cpi;
  93         u_int32_t       sp_cpinum;
  94         u_int32_t       sp_suchecksum;
  95         u_int32_t       sp_spchecksum;
  96         u_int8_t        reserved[0x3C];
  97         lsn_t           sp_spdb[0x65];
  98 };
  99
 100 #define DE_SPECIAL      0x0001
 101 #define DE_ACL          0x0002
 102 #define DE_DOWN         0x0004
 103 #define DE_END          0x0008
 104 #define DE_EALIST       0x0010
 105 #define DE_EPERM        0x0020
 106 #define DE_EXPLACL      0x0040
 107 #define DE_NEEDEA       0x0080
 108 #define DE_RONLY        0x0100
 109 #define DE_HIDDEN       0x0200
 110 #define DE_SYSTEM       0x0400
 111 #define DE_VOLLABEL     0x0800
 112 #define DE_DIR          0x1000
 113 #define DE_ARCHIV       0x2000
 114 #define DE_DOWNLSN(dep) (*(lsn_t *)((caddr_t)(dep) + (dep)->de_reclen - sizeof(lsn_t)))
 115 #define DE_NEXTDE(dep)  ((struct hpfsdirent *)((caddr_t)(dep) + (dep)->de_reclen))
 116 typedef struct hpfsdirent {
 117         u_int16_t       de_reclen;
 118         u_int16_t       de_flag;
 119         lsn_t           de_fnode;
 120         u_long          de_mtime;
 121         u_int32_t       de_size;
 122         u_long          de_atime;
 123         u_long          de_ctime;
 124         u_int32_t       de_ealen;
 125         u_int8_t        de_flexflag;
 126         u_int8_t        de_cpid;
 127         u_int8_t        de_namelen;
 128         char            de_name[1];
 129 /*      ...             de_flex; */
 130 /*      lsn_t           de_down; */
 131 } hpfsdirent_t;
 132
 133 #define D_BSIZE (DEV_BSIZE*4)
 134 #define D_MAGIC 0x77E40AAE
 135 #define D_DIRENT(dbp)   ((hpfsdirent_t *)((caddr_t)dbp + sizeof(dirblk_t)))
 136 #define D_DE(dbp, deoff) ((hpfsdirent_t *)((caddr_t)dbp + sizeof(dirblk_t) + (deoff)))
 137 typedef struct dirblk {
 138         u_int32_t       d_magic;
 139         u_int32_t       d_freeoff;      /* Offset of first free byte */
 140         u_int32_t       d_chcnt;        /* Change count */
 141         lsn_t           d_parent;
 142         lsn_t           d_self;
 143 } dirblk_t;
 144
 145 /*
 146  * Allocation Block (ALBLK)
 147  */
 148 #define AB_HBOFFEO      0x01
 149 #define AB_FNPARENT     0x20
 150 #define AB_SUGGBSCH     0x40
 151 #define AB_NODES        0x80
 152 #define AB_ALLEAF(abp)  ((alleaf_t *)((caddr_t)(abp) + sizeof(alblk_t)))
 153 #define AB_ALNODE(abp)  ((alnode_t *)((caddr_t)(abp) + sizeof(alblk_t)))
 154 #define AB_FREEALP(abp) ((alleaf_t *)((caddr_t)(abp) + (abp)->ab_freeoff))
 155 #define AB_FREEANP(abp) ((alnode_t *)((caddr_t)(abp) + (abp)->ab_freeoff))
 156 #define AB_LASTALP(abp) (AB_ALLEAF(abp) + (abp)->ab_busycnt - 1)
 157 #define AB_LASTANP(abp) (AB_ALNODE(abp) + (abp)->ab_busycnt - 1)
 158 #define AB_ADDNREC(abp, sz, n)  {               \
 159         (abp)->ab_busycnt += (n);               \
 160         (abp)->ab_freecnt -= (n);               \
 161         (abp)->ab_freeoff += (n) * (sz);        \
 162 }
 163 #define AB_RMNREC(abp, sz, n)           {       \
 164         (abp)->ab_busycnt -= (n);               \
 165         (abp)->ab_freecnt += (n);               \
 166         (abp)->ab_freeoff -= (n) * (sz);\
 167 }
 168 #define AB_ADDAL(abp)   AB_ADDNREC(abp,sizeof(alleaf_t), 1)
 169 #define AB_ADDAN(abp)   AB_ADDNREC(abp,sizeof(alnode_t), 1)
 170 #define AB_RMAL(abp)    AB_RMNREC(abp,sizeof(alleaf_t), 1)
 171 #define AB_RMAN(abp)    AB_RMNREC(abp,sizeof(alnode_t), 1)
 172 typedef struct alblk {
 173         u_int8_t        ab_flag;
 174         u_int8_t        ab_res[3];
 175         u_int8_t        ab_freecnt;
 176         u_int8_t        ab_busycnt;
 177         u_int16_t       ab_freeoff;
 178 } alblk_t;
 179
 180 /*
 181  * FNode
 182  */
 183 #define FNODESIZE       DEV_BSIZE
 184 #define FN_MAGIC        0xF7E40AAE
 185 struct fnode {
 186         u_int32_t       fn_magic;
 187         u_int64_t       fn_readhist;
 188         u_int8_t        fn_namelen;
 189         char            fn_name[0xF];           /* First 15 symbols or less */
 190         lsn_t           fn_parent;
 191         sptr_t          fn_extacl;
 192         u_int16_t       fn_acllen;
 193         u_int8_t        fn_extaclflag;
 194         u_int8_t        fn_histbitcount;
 195         sptr_t          fn_extea;
 196         u_int16_t       fn_ealen;               /* Len of EAs in Fnode */
 197         u_int8_t        fn_exteaflag;           /* EAs in exteas */
 198         u_int8_t        fn_flag;
 199         alblk_t         fn_ab;
 200         u_int8_t        fn_abd[0x60];
 201         u_int32_t       fn_size;
 202         u_int32_t       fn_reqea;
 203         u_int8_t        fn_uid[0x10];
 204         u_int16_t       fn_intoff;
 205         u_int8_t        fn_1dasdthr;
 206         u_int8_t        fn_dasdthr;
 207         u_int32_t       fn_dasdlim;
 208         u_int32_t       fn_dasdusage;
 209         u_int8_t        fn_int[0x13c];
 210 };
 211
 212 #define EA_NAME(eap)    ((char *)(((caddr_t)(eap)) + sizeof(struct ea)))
 213 struct ea {
 214         u_int8_t        ea_type;        /* 0 - plain val */
 215                                         /* 1 - sptr to val */
 216                                         /* 3 - lsn point to AlSec, cont. val */
 217         u_int8_t        ea_namelen;
 218         u_int16_t       ea_vallen;
 219         /*u_int8_t      ea_name[]; */
 220         /*u_int8_t      ea_val[]; */
 221 };
 222
 223 /*
 224  * Allocation Block Data (ALNODE)
 225  *
 226  * NOTE: AlNodes are used when there are too many fragments
 227  * to represent the data in the AlBlk
 228  */
 229 #define AN_SET(anp,nextoff,lsn)         {       \
 230         (anp)->an_nextoff = (nextoff);          \
 231         (anp)->an_lsn = (lsn);                  \
 232 }
 233 typedef struct alnode {
 234         u_int32_t       an_nextoff;     /* next node offset in blocks */
 235         lsn_t           an_lsn;         /* position of AlSec structure */
 236 } alnode_t;
 237
 238 /*
 239  * Allocaion  Block Data (ALLEAF)
 240  *
 241  * NOTE: Leaves are used to point at contiguous block of data
 242  * (a fragment or an "extent");
 243  */
 244 #define AL_SET(alp,off,len,lsn)         {       \
 245         (alp)->al_off = (off);                  \
 246         (alp)->al_len = (len);                  \
 247         (alp)->al_lsn = (lsn);                  \
 248 }
 249 typedef struct alleaf {
 250         u_int32_t       al_off;         /* offset in blocks */
 251         u_int32_t       al_len;         /* len in blocks */
 252         lsn_t           al_lsn;         /* phys position */
 253 } alleaf_t;
 254
 255 /*
 256  * Allocation Sector
 257  *
 258  * NOTE: AlSecs  are not  initialized before use, so they ussually
 259  * look full of junk. Use the AlBlk  tto validate the data.
 260  */
 261 #define AS_MAGIC        0x37E40AAE
 262 typedef struct alsec {
 263         u_int32_t       as_magic;
 264         lsn_t           as_self;
 265         lsn_t           as_parent;
 266         alblk_t         as_ab;
 267         u_int8_t        as_abd[0x1E0];
 268 } alsec_t;
 269
 270 /*
 271  * Code Page structures
 272  */
 273 struct cpdblk {
 274         u_int16_t       b_country;      /* Country code */
 275         u_int16_t       b_cpid;         /* CP ID */
 276         u_int16_t       b_dbcscnt;      /* Count of DBCS ranges in CP */
 277         char            b_upcase[0x80]; /* Case conversion table */
 278         u_int16_t       b_dbcsrange;    /* Start/End DBCS range pairs */
 279
 280 };
 281
 282 #define CPD_MAGIC       ((u_int32_t)0x894521F7)
 283 struct cpdsec {
 284         u_int32_t       d_magic;
 285         u_int16_t       d_cpcnt;        /* CP Data count */
 286         u_int16_t       d_cpfirst;      /* Index of first CP Data */
 287         u_int32_t       d_checksum[3];  /* CP Data checksumms */
 288         u_int16_t       d_offset[3];    /* Offsets of CP Data blocks */
 289         struct cpdblk   d_cpdblk[3];    /* Array of CP Data Blocks */
 290 };
 291
 292 struct cpiblk {
 293         u_int16_t       b_country;      /* Country code */
 294         u_int16_t       b_cpid;         /* CP ID */
 295         u_int32_t       b_checksum;
 296         lsn_t           b_cpdsec;       /* Pointer to CP Data Sector */
 297         u_int16_t       b_vcpid;        /* Volume spec. CP ID */
 298         u_int16_t       b_dbcscnt;      /* Count of DBCS ranges in CP */
 299 };
 300
 301 #define CPI_MAGIC       ((u_int32_t)0x494521F7)
 302 struct cpisec {
 303         u_int32_t       s_magic;
 304         u_int32_t       s_cpicnt;       /* Count of CPI's in this sector */
 305         u_int32_t       s_cpifirst;     /* Index of first CPI in this sector */
 306         lsn_t           s_next;         /* Pointer to next CPI Sector */
 307         struct cpiblk   s_cpi[0x1F];    /* Array of CPI blocks */
 308 };
 309
 310 struct hpfsmount {
 311         struct sublock  hpm_su;
 312         struct spblock  hpm_sp;
 313         struct netexport hpm_export;
 314         struct mount *  hpm_mp;
 315         struct vnode *  hpm_devvp;
 316         cdev_t          hpm_dev;
 317         uid_t           hpm_uid;
 318         gid_t           hpm_gid;
 319         mode_t          hpm_mode;
 320
 321         lsn_t *         hpm_bmind;
 322         struct cpdblk * hpm_cpdblk;     /* Array of CP Data Blocks */
 323         u_char          hpm_u2d[0x80];  /* Unix to DOS Table*/
 324         u_char          hpm_d2u[0x80];  /* DOS to Unix Table*/
 325
 326         u_long          hpm_bavail;     /* Blocks available */
 327         u_long          hpm_dbnum;      /* Data Band number */
 328         u_int8_t *      hpm_bitmap;
 329 };
 330
 331 #define H_HASHED        0x0001          /* Present in hash */
 332 #define H_PARVALID      0x0002          /* parent info is valid */
 333 #define H_CHANGE        0x0004          /* node date was changed */
 334 #define H_PARCHANGE     0x0008          /* parent node date was changed */
 335 #define H_INVAL         0x0010          /* Invalid node */
 336 struct hpfsnode {
 337         struct lwkt_token h_interlock;
 338
 339         LIST_ENTRY(hpfsnode)    h_hash;
 340
 341         struct hpfsmount *h_hpmp;
 342         struct fnode    h_fn;
 343         struct vnode *  h_vp;
 344         struct vnode *  h_devvp;
 345         cdev_t          h_dev;
 346         lsn_t           h_no;
 347         uid_t           h_uid;
 348         gid_t           h_gid;
 349         mode_t          h_mode;
 350         u_int32_t       h_flag;
 351
 352         /* parent dir information */
 353         u_long          h_mtime;
 354         u_long          h_atime;
 355         u_long          h_ctime;
 356         char            h_name[HPFS_MAXFILENAME+1]; /* Used to speedup dirent */
 357         int             h_namelen;                  /* lookup */
 358 };
 359
 360 /* This overlays the fid structure (see <sys/mount.h>) */
 361 struct hpfid {
 362         u_int16_t hpfid_len;     /* Length of structure. */
 363         u_int16_t hpfid_pad;     /* Force 32-bit alignment. */
 364         lsn_t     hpfid_ino;     /* File number (ino). */
 365         int32_t   hpfid_gen;     /* Generation number. */
 366 };
 367
 368 #if defined(HPFS_DEBUG)
 369 #define dprintf(a) kprintf a
 370 #if HPFS_DEBUG > 1
 371 #define ddprintf(a) kprintf a
 372 #else
 373 #define ddprintf(a)
 374 #endif
 375 #else
 376 #define dprintf(a)
 377 #define ddprintf(a)
 378 #endif
 379 #ifdef MALLOC_DECLARE
 380 MALLOC_DECLARE(M_HPFSMNT);
 381 MALLOC_DECLARE(M_HPFSNO);
 382 #endif
 383 #define VFSTOHPFS(mp)   ((struct hpfsmount *)((mp)->mnt_data))
 384 #define VTOHP(v)        ((struct hpfsnode *)((v)->v_data))
 385 #define HPTOV(h)        ((struct vnode *)((h)->h_vp))
 386 #define FID(f)          (*((lsn_t *)(f)->fid_data))
 387 #define dbtodoff(dbn)   ((off_t)(dbn) << DEV_BSHIFT)
 388
 389 #define VOP__LOCK(a, b)         vn_lock((a), (b) | LK_FAILRECLAIM)
 390 #define VOP__UNLOCK(a, b)       vn_unlock((a))
 391 #define VGET(a, b, c)           vget((a), (b))
 392 #define VN_LOCK(a, b)           vn_lock((a), (b))
 393 #define LOCKMGR(a, b)           lockmgr((a), (b))
 394
 395 struct vfsconf;
 396
 397 /* Hash routines, too small to be separate header */
 398 void hpfs_hphashinit (void);
 399 int hpfs_hphash_uninit (struct vfsconf *);
 400 struct hpfsnode *hpfs_hphashlookup (cdev_t, lsn_t);
 401 struct hpfsnode *hpfs_hphashget (cdev_t, lsn_t);
 402 struct vnode *hpfs_hphashvget (cdev_t, lsn_t);
 403 void hpfs_hphashins (struct hpfsnode *);
 404 void hpfs_hphashrem (struct hpfsnode *);
 405 extern struct lock hpfs_hphash_lock;