include/linux/coda.h

   1 /*
   2    You may distribute this file under either of the two licenses that
   3    follow at your discretion.
   4 */
   5
   6 /* BLURB lgpl
   7
   8                            Coda File System
   9                               Release 5
  10
  11           Copyright (c) 1987-1999 Carnegie Mellon University
  12                   Additional copyrights listed below
  13
  14 This code is distributed "AS IS" without warranty of any kind under
  15 the terms of the GNU Library General Public Licence Version 2, as
  16 shown in the file LICENSE, or under the license shown below. The
  17 technical and financial contributors to Coda are listed in the file
  18 CREDITS.
  19
  20                         Additional copyrights
  21 */
  22
  23 /*
  24
  25             Coda: an Experimental Distributed File System
  26                              Release 4.0
  27
  28           Copyright (c) 1987-1999 Carnegie Mellon University
  29                          All Rights Reserved
  30
  31 Permission  to  use, copy, modify and distribute this software and its
  32 documentation is hereby granted,  provided  that  both  the  copyright
  33 notice  and  this  permission  notice  appear  in  all  copies  of the
  34 software, derivative works or  modified  versions,  and  any  portions
  35 thereof, and that both notices appear in supporting documentation, and
  36 that credit is given to Carnegie Mellon University  in  all  documents
  37 and publicity pertaining to direct or indirect use of this code or its
  38 derivatives.
  39
  40 CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS  KNOWN  TO  HAVE  BUGS,
  41 SOME  OF  WHICH MAY HAVE SERIOUS CONSEQUENCES.  CARNEGIE MELLON ALLOWS
  42 FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION.   CARNEGIE  MELLON
  43 DISCLAIMS  ANY  LIABILITY  OF  ANY  KIND  FOR  ANY  DAMAGES WHATSOEVER
  44 RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE  OR  OF
  45 ANY DERIVATIVE WORK.
  46
  47 Carnegie  Mellon  encourages  users  of  this  software  to return any
  48 improvements or extensions that  they  make,  and  to  grant  Carnegie
  49 Mellon the rights to redistribute these changes without encumbrance.
  50 */
  51
  52 /*
  53  *
  54  * Based on cfs.h from Mach, but revamped for increased simplicity.
  55  * Linux modifications by
  56  * Peter Braam, Aug 1996
  57  */
  58
  59 #ifndef _CODA_HEADER_
  60 #define _CODA_HEADER_
  61
  62
  63
  64 /* Catch new _KERNEL defn for NetBSD and DJGPP/__CYGWIN32__ */
  65 #if defined(__NetBSD__) || \
  66   ((defined(DJGPP) || defined(__CYGWIN32__)) && !defined(KERNEL))
  67 #include <sys/types.h>
  68 #endif
  69
  70 #ifndef CODA_MAXSYMLINKS
  71 #define CODA_MAXSYMLINKS 10
  72 #endif
  73
  74 #if defined(DJGPP) || defined(__CYGWIN32__)
  75 #ifdef KERNEL
  76 typedef unsigned long u_long;
  77 typedef unsigned int u_int;
  78 typedef unsigned short u_short;
  79 typedef u_long ino_t;
  80 typedef u_long dev_t;
  81 typedef void * caddr_t;
  82 #ifdef DOS
  83 typedef unsigned __int64 u_quad_t;
  84 #else
  85 typedef unsigned long long u_quad_t;
  86 #endif
  87
  88 #define inline
  89
  90 struct timespec {
  91         long       ts_sec;
  92         long       ts_nsec;
  93 };
  94 #else  /* DJGPP but not KERNEL */
  95 #include <sys/time.h>
  96 typedef unsigned long long u_quad_t;
  97 #endif /* !KERNEL */
  98 #endif /* !DJGPP */
  99
 100
 101 #if defined(__linux__)
 102 #define cdev_t u_quad_t
 103 #ifndef __KERNEL__
 104 #if !defined(_UQUAD_T_) && (!defined(__GLIBC__) || __GLIBC__ < 2)
 105 #define _UQUAD_T_ 1
 106 typedef unsigned long long u_quad_t;
 107 #endif
 108 #else /*__KERNEL__ */
 109 typedef unsigned long long u_quad_t;
 110 #endif /* __KERNEL__ */
 111 #else
 112 #define cdev_t dev_t
 113 #endif
 114
 115 #ifdef __CYGWIN32__
 116 struct timespec {
 117         time_t  tv_sec;         /* seconds */
 118         long    tv_nsec;        /* nanoseconds */
 119 };
 120 #endif
 121
 122 #ifndef __BIT_TYPES_DEFINED__
 123 #define __BIT_TYPES_DEFINED__
 124 typedef signed char           int8_t;
 125 typedef unsigned char       u_int8_t;
 126 typedef short                int16_t;
 127 typedef unsigned short     u_int16_t;
 128 typedef int                  int32_t;
 129 typedef unsigned int       u_int32_t;
 130 #endif
 131
 132
 133 /*
 134  * Cfs constants
 135  */
 136 #define CODA_MAXNAMLEN   255
 137 #define CODA_MAXPATHLEN  1024
 138 #define CODA_MAXSYMLINK  10
 139
 140 /* these are Coda's version of O_RDONLY etc combinations
 141  * to deal with VFS open modes
 142  */
 143 #define C_O_READ        0x001
 144 #define C_O_WRITE       0x002
 145 #define C_O_TRUNC       0x010
 146 #define C_O_EXCL        0x100
 147 #define C_O_CREAT       0x200
 148
 149 /* these are to find mode bits in Venus */
 150 #define C_M_READ  00400
 151 #define C_M_WRITE 00200
 152
 153 /* for access Venus will use */
 154 #define C_A_C_OK    8               /* Test for writing upon create.  */
 155 #define C_A_R_OK    4               /* Test for read permission.  */
 156 #define C_A_W_OK    2               /* Test for write permission.  */
 157 #define C_A_X_OK    1               /* Test for execute permission.  */
 158 #define C_A_F_OK    0               /* Test for existence.  */
 159
 160
 161
 162 #ifndef _VENUS_DIRENT_T_
 163 #define _VENUS_DIRENT_T_ 1
 164 struct venus_dirent {
 165         unsigned long   d_fileno;               /* file number of entry */
 166         unsigned short  d_reclen;               /* length of this record */
 167         unsigned char   d_type;                 /* file type, see below */
 168         unsigned char   d_namlen;               /* length of string in d_name */
 169         char            d_name[CODA_MAXNAMLEN + 1];/* name must be no longer than this */
 170 };
 171 #undef DIRSIZ
 172 #define DIRSIZ(dp)      ((sizeof (struct venus_dirent) - (CODA_MAXNAMLEN+1)) + \
 173                          (((dp)->d_namlen+1 + 3) &~ 3))
 174
 175 /*
 176  * File types
 177  */
 178 #define CDT_UNKNOWN      0
 179 #define CDT_FIFO         1
 180 #define CDT_CHR          2
 181 #define CDT_DIR          4
 182 #define CDT_BLK          6
 183 #define CDT_REG          8
 184 #define CDT_LNK         10
 185 #define CDT_SOCK        12
 186 #define CDT_WHT         14
 187
 188 /*
 189  * Convert between stat structure types and directory types.
 190  */
 191 #define IFTOCDT(mode)   (((mode) & 0170000) >> 12)
 192 #define CDTTOIF(dirtype)        ((dirtype) << 12)
 193
 194 #endif
 195
 196 #ifndef _FID_T_
 197 #define _FID_T_ 1
 198 typedef u_long VolumeId;
 199 typedef u_long VnodeId;
 200 typedef u_long Unique_t;
 201 typedef u_long FileVersion;
 202 #endif
 203
 204 #ifndef _VICEFID_T_
 205 #define _VICEFID_T_     1
 206 typedef struct ViceFid {
 207     VolumeId Volume;
 208     VnodeId Vnode;
 209     Unique_t Unique;
 210 } ViceFid;
 211 #endif  /* VICEFID */
 212
 213
 214 #ifdef __linux__
 215 static __inline__ ino_t  coda_f2i(struct ViceFid *fid)
 216 {
 217         if ( ! fid )
 218                 return 0;
 219         if (fid->Vnode == 0xfffffffe || fid->Vnode == 0xffffffff)
 220                 return ((fid->Volume << 20) | (fid->Unique & 0xfffff));
 221         else
 222                 return (fid->Unique + (fid->Vnode<<10) + (fid->Volume<<20));
 223 }
 224
 225 #else
 226 #define coda_f2i(fid)\
 227         ((fid) ? ((fid)->Unique + ((fid)->Vnode<<10) + ((fid)->Volume<<20)) : 0)
 228 #endif
 229
 230
 231 #ifndef _VUID_T_
 232 #define _VUID_T_
 233 typedef u_int32_t vuid_t;
 234 typedef u_int32_t vgid_t;
 235 #endif /*_VUID_T_ */
 236
 237 #ifndef _CODACRED_T_
 238 #define _CODACRED_T_
 239 struct coda_cred {
 240     vuid_t cr_uid, cr_euid, cr_suid, cr_fsuid; /* Real, efftve, set, fs uid*/
 241     vgid_t cr_groupid,     cr_egid, cr_sgid, cr_fsgid; /* same for groups */
 242 };
 243 #endif
 244
 245 #ifndef _VENUS_VATTR_T_
 246 #define _VENUS_VATTR_T_
 247 /*
 248  * Vnode types.  VNON means no type.
 249  */
 250 enum coda_vtype { C_VNON, C_VREG, C_VDIR, C_VBLK, C_VCHR, C_VLNK, C_VSOCK, C_VFIFO, C_VBAD };
 251
 252 struct coda_vattr {
 253         long            va_type;        /* vnode type (for create) */
 254         u_short         va_mode;        /* files access mode and type */
 255         short           va_nlink;       /* number of references to file */
 256         vuid_t          va_uid;         /* owner user id */
 257         vgid_t          va_gid;         /* owner group id */
 258         long            va_fileid;      /* file id */
 259         u_quad_t        va_size;        /* file size in bytes */
 260         long            va_blocksize;   /* blocksize preferred for i/o */
 261         struct timespec va_atime;       /* time of last access */
 262         struct timespec va_mtime;       /* time of last modification */
 263         struct timespec va_ctime;       /* time file changed */
 264         u_long          va_gen;         /* generation number of file */
 265         u_long          va_flags;       /* flags defined for file */
 266         cdev_t          va_rdev;        /* device special file represents */
 267         u_quad_t        va_bytes;       /* bytes of disk space held by file */
 268         u_quad_t        va_filerev;     /* file modification number */
 269 };
 270
 271 #endif
 272
 273 /* structure used by CODA_STATFS for getting cache information from venus */
 274 struct coda_statfs {
 275     int32_t f_blocks;
 276     int32_t f_bfree;
 277     int32_t f_bavail;
 278     int32_t f_files;
 279     int32_t f_ffree;
 280 };
 281
 282 /*
 283  * Kernel <--> Venus communications.
 284  */
 285
 286 #define CODA_ROOT       2
 287 #define CODA_OPEN_BY_FD 3
 288 #define CODA_OPEN       4
 289 #define CODA_CLOSE      5
 290 #define CODA_IOCTL      6
 291 #define CODA_GETATTR    7
 292 #define CODA_SETATTR    8
 293 #define CODA_ACCESS     9
 294 #define CODA_LOOKUP     10
 295 #define CODA_CREATE     11
 296 #define CODA_REMOVE     12
 297 #define CODA_LINK       13
 298 #define CODA_RENAME     14
 299 #define CODA_MKDIR      15
 300 #define CODA_RMDIR      16
 301 #define CODA_SYMLINK    18
 302 #define CODA_READLINK   19
 303 #define CODA_FSYNC      20
 304 #define CODA_VGET       22
 305 #define CODA_SIGNAL     23
 306 #define CODA_REPLACE     24 /* DOWNCALL */
 307 #define CODA_FLUSH       25 /* DOWNCALL */
 308 #define CODA_PURGEUSER   26 /* DOWNCALL */
 309 #define CODA_ZAPFILE     27 /* DOWNCALL */
 310 #define CODA_ZAPDIR      28 /* DOWNCALL */
 311 #define CODA_PURGEFID    30 /* DOWNCALL */
 312 #define CODA_OPEN_BY_PATH 31
 313 #define CODA_RESOLVE     32
 314 #define CODA_REINTEGRATE 33
 315 #define CODA_STATFS      34
 316 #define CODA_NCALLS 35
 317
 318 #define DOWNCALL(opcode) (opcode >= CODA_REPLACE && opcode <= CODA_PURGEFID)
 319
 320 #define VC_MAXDATASIZE      8192
 321 #define VC_MAXMSGSIZE      sizeof(union inputArgs)+sizeof(union outputArgs) +\
 322                             VC_MAXDATASIZE
 323
 324 #define CIOC_KERNEL_VERSION _IOWR('c', 10, sizeof (int))
 325
 326 #if 0
 327 #define CODA_KERNEL_VERSION 0 /* don't care about kernel version number */
 328 #define CODA_KERNEL_VERSION 1 /* The old venus 4.6 compatible interface */
 329 #endif
 330 #define CODA_KERNEL_VERSION 2 /* venus_lookup gets an extra parameter */
 331
 332 /*
 333  *        Venus <-> Coda  RPC arguments
 334  */
 335 struct coda_in_hdr {
 336     unsigned long opcode;
 337     unsigned long unique;           /* Keep multiple outstanding msgs distinct */
 338     u_short pid;                    /* Common to all */
 339     u_short pgid;                   /* Common to all */
 340     u_short sid;                    /* Common to all */
 341     struct coda_cred cred;          /* Common to all */
 342 };
 343
 344 /* Really important that opcode and unique are 1st two fields! */
 345 struct coda_out_hdr {
 346     unsigned long opcode;
 347     unsigned long unique;
 348     unsigned long result;
 349 };
 350
 351 /* coda_root: NO_IN */
 352 struct coda_root_out {
 353     struct coda_out_hdr oh;
 354     ViceFid VFid;
 355 };
 356
 357 struct coda_root_in {
 358     struct coda_in_hdr in;
 359 };
 360
 361 /* coda_open: */
 362 struct coda_open_in {
 363     struct coda_in_hdr ih;
 364     ViceFid     VFid;
 365     int flags;
 366 };
 367
 368 struct coda_open_out {
 369     struct coda_out_hdr oh;
 370     cdev_t      dev;
 371     ino_t       inode;
 372 };
 373
 374
 375 /* coda_close: */
 376 struct coda_close_in {
 377     struct coda_in_hdr ih;
 378     ViceFid     VFid;
 379     int flags;
 380 };
 381
 382 struct coda_close_out {
 383     struct coda_out_hdr out;
 384 };
 385
 386 /* coda_ioctl: */
 387 struct coda_ioctl_in {
 388     struct coda_in_hdr ih;
 389     ViceFid VFid;
 390     int cmd;
 391     int len;
 392     int rwflag;
 393     char *data;                 /* Place holder for data. */
 394 };
 395
 396 struct coda_ioctl_out {
 397     struct coda_out_hdr oh;
 398     int len;
 399     caddr_t     data;           /* Place holder for data. */
 400 };
 401
 402
 403 /* coda_getattr: */
 404 struct coda_getattr_in {
 405     struct coda_in_hdr ih;
 406     ViceFid VFid;
 407 };
 408
 409 struct coda_getattr_out {
 410     struct coda_out_hdr oh;
 411     struct coda_vattr attr;
 412 };
 413
 414
 415 /* coda_setattr: NO_OUT */
 416 struct coda_setattr_in {
 417     struct coda_in_hdr ih;
 418     ViceFid VFid;
 419     struct coda_vattr attr;
 420 };
 421
 422 struct coda_setattr_out {
 423     struct coda_out_hdr out;
 424 };
 425
 426 /* coda_access: NO_OUT */
 427 struct coda_access_in {
 428     struct coda_in_hdr ih;
 429     ViceFid     VFid;
 430     int flags;
 431 };
 432
 433 struct coda_access_out {
 434     struct coda_out_hdr out;
 435 };
 436
 437
 438 /* lookup flags */
 439 #define CLU_CASE_SENSITIVE     0x01
 440 #define CLU_CASE_INSENSITIVE   0x02
 441
 442 /* coda_lookup: */
 443 struct  coda_lookup_in {
 444     struct coda_in_hdr ih;
 445     ViceFid     VFid;
 446     int         name;           /* Place holder for data. */
 447     int         flags;
 448 };
 449
 450 struct coda_lookup_out {
 451     struct coda_out_hdr oh;
 452     ViceFid VFid;
 453     int vtype;
 454 };
 455
 456
 457 /* coda_create: */
 458 struct coda_create_in {
 459     struct coda_in_hdr ih;
 460     ViceFid VFid;
 461     struct coda_vattr attr;
 462     int excl;
 463     int mode;
 464     int         name;           /* Place holder for data. */
 465 };
 466
 467 struct coda_create_out {
 468     struct coda_out_hdr oh;
 469     ViceFid VFid;
 470     struct coda_vattr attr;
 471 };
 472
 473
 474 /* coda_remove: NO_OUT */
 475 struct coda_remove_in {
 476     struct coda_in_hdr ih;
 477     ViceFid     VFid;
 478     int name;           /* Place holder for data. */
 479 };
 480
 481 struct coda_remove_out {
 482     struct coda_out_hdr out;
 483 };
 484
 485 /* coda_link: NO_OUT */
 486 struct coda_link_in {
 487     struct coda_in_hdr ih;
 488     ViceFid sourceFid;          /* cnode to link *to* */
 489     ViceFid destFid;            /* Directory in which to place link */
 490     int tname;          /* Place holder for data. */
 491 };
 492
 493 struct coda_link_out {
 494     struct coda_out_hdr out;
 495 };
 496
 497
 498 /* coda_rename: NO_OUT */
 499 struct coda_rename_in {
 500     struct coda_in_hdr ih;
 501     ViceFid     sourceFid;
 502     int         srcname;
 503     ViceFid destFid;
 504     int         destname;
 505 };
 506
 507 struct coda_rename_out {
 508     struct coda_out_hdr out;
 509 };
 510
 511 /* coda_mkdir: */
 512 struct coda_mkdir_in {
 513     struct coda_in_hdr ih;
 514     ViceFid     VFid;
 515     struct coda_vattr attr;
 516     int    name;                /* Place holder for data. */
 517 };
 518
 519 struct coda_mkdir_out {
 520     struct coda_out_hdr oh;
 521     ViceFid VFid;
 522     struct coda_vattr attr;
 523 };
 524
 525
 526 /* coda_rmdir: NO_OUT */
 527 struct coda_rmdir_in {
 528     struct coda_in_hdr ih;
 529     ViceFid     VFid;
 530     int name;           /* Place holder for data. */
 531 };
 532
 533 struct coda_rmdir_out {
 534     struct coda_out_hdr out;
 535 };
 536
 537 /* coda_symlink: NO_OUT */
 538 struct coda_symlink_in {
 539     struct coda_in_hdr ih;
 540     ViceFid     VFid;          /* Directory to put symlink in */
 541     int srcname;
 542     struct coda_vattr attr;
 543     int tname;
 544 };
 545
 546 struct coda_symlink_out {
 547     struct coda_out_hdr out;
 548 };
 549
 550 /* coda_readlink: */
 551 struct coda_readlink_in {
 552     struct coda_in_hdr ih;
 553     ViceFid VFid;
 554 };
 555
 556 struct coda_readlink_out {
 557     struct coda_out_hdr oh;
 558     int count;
 559     caddr_t     data;           /* Place holder for data. */
 560 };
 561
 562
 563 /* coda_fsync: NO_OUT */
 564 struct coda_fsync_in {
 565     struct coda_in_hdr ih;
 566     ViceFid VFid;
 567 };
 568
 569 struct coda_fsync_out {
 570     struct coda_out_hdr out;
 571 };
 572
 573 /* coda_vget: */
 574 struct coda_vget_in {
 575     struct coda_in_hdr ih;
 576     ViceFid VFid;
 577 };
 578
 579 struct coda_vget_out {
 580     struct coda_out_hdr oh;
 581     ViceFid VFid;
 582     int vtype;
 583 };
 584
 585
 586 /* CODA_SIGNAL is out-of-band, doesn't need data. */
 587 /* CODA_INVALIDATE is a venus->kernel call */
 588 /* CODA_FLUSH is a venus->kernel call */
 589
 590 /* coda_purgeuser: */
 591 /* CODA_PURGEUSER is a venus->kernel call */
 592 struct coda_purgeuser_out {
 593     struct coda_out_hdr oh;
 594     struct coda_cred cred;
 595 };
 596
 597 /* coda_zapfile: */
 598 /* CODA_ZAPFILE is a venus->kernel call */
 599 struct coda_zapfile_out {
 600     struct coda_out_hdr oh;
 601     ViceFid CodaFid;
 602 };
 603
 604 /* coda_zapdir: */
 605 /* CODA_ZAPDIR is a venus->kernel call */
 606 struct coda_zapdir_out {
 607     struct coda_out_hdr oh;
 608     ViceFid CodaFid;
 609 };
 610
 611 /* coda_zapnode: */
 612 /* CODA_ZAPVNODE is a venus->kernel call */
 613 struct coda_zapvnode_out {
 614     struct coda_out_hdr oh;
 615     struct coda_cred cred;
 616     ViceFid VFid;
 617 };
 618
 619 /* coda_purgefid: */
 620 /* CODA_PURGEFID is a venus->kernel call */
 621 struct coda_purgefid_out {
 622     struct coda_out_hdr oh;
 623     ViceFid CodaFid;
 624 };
 625
 626 /* coda_replace: */
 627 /* CODA_REPLACE is a venus->kernel call */
 628 struct coda_replace_out { /* coda_replace is a venus->kernel call */
 629     struct coda_out_hdr oh;
 630     ViceFid NewFid;
 631     ViceFid OldFid;
 632 };
 633
 634 /* coda_open_by_fd: */
 635 struct coda_open_by_fd_in {
 636     struct coda_in_hdr ih;
 637     ViceFid    VFid;
 638     int        flags;
 639 };
 640
 641 struct coda_open_by_fd_out {
 642     struct coda_out_hdr oh;
 643     int fd;
 644 };
 645
 646 /* coda_open_by_path: */
 647 struct coda_open_by_path_in {
 648     struct coda_in_hdr ih;
 649     ViceFid     VFid;
 650     int flags;
 651 };
 652
 653 struct coda_open_by_path_out {
 654     struct coda_out_hdr oh;
 655         int path;
 656 };
 657
 658 /* coda_statfs: NO_IN */
 659 struct coda_statfs_in {
 660     struct coda_in_hdr in;
 661 };
 662
 663 struct coda_statfs_out {
 664     struct coda_out_hdr oh;
 665     struct coda_statfs stat;
 666 };
 667
 668 /*
 669  * Occasionally, we don't cache the fid returned by CODA_LOOKUP.
 670  * For instance, if the fid is inconsistent.
 671  * This case is handled by setting the top bit of the type result parameter.
 672  */
 673 #define CODA_NOCACHE          0x80000000
 674
 675 union inputArgs {
 676     struct coda_in_hdr ih;              /* NB: every struct below begins with an ih */
 677     struct coda_open_in coda_open;
 678     struct coda_close_in coda_close;
 679     struct coda_ioctl_in coda_ioctl;
 680     struct coda_getattr_in coda_getattr;
 681     struct coda_setattr_in coda_setattr;
 682     struct coda_access_in coda_access;
 683     struct coda_lookup_in coda_lookup;
 684     struct coda_create_in coda_create;
 685     struct coda_remove_in coda_remove;
 686     struct coda_link_in coda_link;
 687     struct coda_rename_in coda_rename;
 688     struct coda_mkdir_in coda_mkdir;
 689     struct coda_rmdir_in coda_rmdir;
 690     struct coda_symlink_in coda_symlink;
 691     struct coda_readlink_in coda_readlink;
 692     struct coda_fsync_in coda_fsync;
 693     struct coda_vget_in coda_vget;
 694     struct coda_open_by_fd_in coda_open_by_fd;
 695     struct coda_open_by_path_in coda_open_by_path;
 696     struct coda_statfs_in coda_statfs;
 697 };
 698
 699 union outputArgs {
 700     struct coda_out_hdr oh;             /* NB: every struct below begins with an oh */
 701     struct coda_root_out coda_root;
 702     struct coda_open_out coda_open;
 703     struct coda_ioctl_out coda_ioctl;
 704     struct coda_getattr_out coda_getattr;
 705     struct coda_lookup_out coda_lookup;
 706     struct coda_create_out coda_create;
 707     struct coda_mkdir_out coda_mkdir;
 708     struct coda_readlink_out coda_readlink;
 709     struct coda_vget_out coda_vget;
 710     struct coda_purgeuser_out coda_purgeuser;
 711     struct coda_zapfile_out coda_zapfile;
 712     struct coda_zapdir_out coda_zapdir;
 713     struct coda_zapvnode_out coda_zapvnode;
 714     struct coda_purgefid_out coda_purgefid;
 715     struct coda_replace_out coda_replace;
 716     struct coda_open_by_fd_out coda_open_by_fd;
 717     struct coda_open_by_path_out coda_open_by_path;
 718     struct coda_statfs_out coda_statfs;
 719 };
 720
 721 union coda_downcalls {
 722     /* CODA_INVALIDATE is a venus->kernel call */
 723     /* CODA_FLUSH is a venus->kernel call */
 724     struct coda_purgeuser_out purgeuser;
 725     struct coda_zapfile_out zapfile;
 726     struct coda_zapdir_out zapdir;
 727     struct coda_zapvnode_out zapvnode;
 728     struct coda_purgefid_out purgefid;
 729     struct coda_replace_out replace;
 730 };
 731
 732
 733 /*
 734  * Used for identifying usage of "Control" and pioctls
 735  */
 736
 737 #define PIOCPARM_MASK 0x0000ffff
 738 struct ViceIoctl {
 739         caddr_t in, out;        /* Data to be transferred in, or out */
 740         short in_size;          /* Size of input buffer <= 2K */
 741         short out_size;         /* Maximum size of output buffer, <= 2K */
 742 };
 743
 744 struct PioctlData {
 745         const char *path;
 746         int follow;
 747         struct ViceIoctl vi;
 748 };
 749
 750 #define CODA_CONTROL            ".CONTROL"
 751 #define CODA_CONTROLLEN           8
 752 #define CTL_VOL                 -1
 753 #define CTL_VNO                 -1
 754 #define CTL_UNI                 -1
 755 #define CTL_INO                 -1
 756 #define CTL_FILE                "/coda/.CONTROL"
 757
 758
 759 #define IS_CTL_FID(fidp)        ((fidp)->Volume == CTL_VOL &&\
 760                                  (fidp)->Vnode == CTL_VNO &&\
 761                                  (fidp)->Unique == CTL_UNI)
 762
 763 /* Data passed to mount */
 764
 765 #define CODA_MOUNT_VERSION 1
 766
 767 struct coda_mount_data {
 768         int             version;
 769         int             fd;       /* Opened device */
 770 };
 771
 772 #endif
 773