coda_vfsops.c revision 46676
1/* 2 * 3 * Coda: an Experimental Distributed File System 4 * Release 3.1 5 * 6 * Copyright (c) 1987-1998 Carnegie Mellon University 7 * All Rights Reserved 8 * 9 * Permission to use, copy, modify and distribute this software and its 10 * documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation, and 14 * that credit is given to Carnegie Mellon University in all documents 15 * and publicity pertaining to direct or indirect use of this code or its 16 * derivatives. 17 * 18 * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS, 19 * SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS 20 * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON 21 * DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER 22 * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF 23 * ANY DERIVATIVE WORK. 24 * 25 * Carnegie Mellon encourages users of this software to return any 26 * improvements or extensions that they make, and to grant Carnegie 27 * Mellon the rights to redistribute these changes without encumbrance. 28 * 29 * @(#) src/sys/cfs/coda_vfsops.c,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $ 30 * $Id: coda_vfsops.c,v 1.11 1999/01/17 20:25:17 peter Exp $ 31 * 32 */ 33 34/* 35 * Mach Operating System 36 * Copyright (c) 1989 Carnegie-Mellon University 37 * All rights reserved. The CMU software License Agreement specifies 38 * the terms and conditions for use and redistribution. 39 */ 40 41/* 42 * This code was written for the Coda file system at Carnegie Mellon 43 * University. Contributers include David Steere, James Kistler, and 44 * M. Satyanarayanan. 45 */ 46 47/* 48 * HISTORY 49 * $Log: coda_vfsops.c,v $ 50 * Revision 1.11 1999/01/17 20:25:17 peter 51 * Clean up the KLD/LKM goop a bit. 52 * 53 * Revision 1.10 1998/12/04 22:54:43 archie 54 * Examine all occurrences of sprintf(), strcat(), and str[n]cpy() 55 * for possible buffer overflow problems. Replaced most sprintf()'s 56 * with snprintf(); for others cases, added terminating NUL bytes where 57 * appropriate, replaced constants like "16" with sizeof(), etc. 58 * 59 * These changes include several bug fixes, but most changes are for 60 * maintainability's sake. Any instance where it wasn't "immediately 61 * obvious" that a buffer overflow could not occur was made safer. 62 * 63 * Reviewed by: Bruce Evans <bde@zeta.org.au> 64 * Reviewed by: Matthew Dillon <dillon@apollo.backplane.com> 65 * Reviewed by: Mike Spengler <mks@networkcs.com> 66 * 67 * Revision 1.9 1998/11/16 19:48:26 rvb 68 * A few bug fixes for Robert Watson 69 * 70 * Revision 1.8 1998/11/03 08:55:06 peter 71 * Support KLD. We register and unregister two modules. "coda" (the vfs) 72 * via VFS_SET(), and "codadev" for the cdevsw entry. From kldstat -v: 73 * 3 1 0xf02c5000 115d8 coda.ko 74 * Contains modules: 75 * Id Name 76 * 2 codadev 77 * 3 coda 78 * 79 * Revision 1.7 1998/09/29 20:19:45 rvb 80 * Fixes for lkm: 81 * 1. use VFS_LKM vs ACTUALLY_LKM_NOT_KERNEL 82 * 2. don't pass -DCODA to lkm build 83 * 84 * Revision 1.6 1998/09/25 17:38:32 rvb 85 * Put "stray" printouts under DIAGNOSTIC. Make everything build 86 * with DEBUG on. Add support for lkm. (The macro's don't work 87 * for me; for a good chuckle look at the end of coda_fbsd.c.) 88 * 89 * Revision 1.5 1998/09/13 13:57:59 rvb 90 * Finish conversion of cfs -> coda 91 * 92 * Revision 1.4 1998/09/11 18:50:17 rvb 93 * All the references to cfs, in symbols, structs, and strings 94 * have been changed to coda. (Same for CFS.) 95 * 96 * Revision 1.2 1998/09/02 19:09:53 rvb 97 * Pass2 complete 98 * 99 * Revision 1.1.1.1 1998/08/29 21:14:52 rvb 100 * Very Preliminary Coda 101 * 102 * Revision 1.11 1998/08/28 18:12:22 rvb 103 * Now it also works on FreeBSD -current. This code will be 104 * committed to the FreeBSD -current and NetBSD -current 105 * trees. It will then be tailored to the particular platform 106 * by flushing conditional code. 107 * 108 * Revision 1.10 1998/08/18 17:05:19 rvb 109 * Don't use __RCSID now 110 * 111 * Revision 1.9 1998/08/18 16:31:44 rvb 112 * Sync the code for NetBSD -current; test on 1.3 later 113 * 114 * Revision 1.8 98/02/24 22:22:48 rvb 115 * Fixes up mainly to flush iopen and friends 116 * 117 * Revision 1.7 98/01/23 11:53:45 rvb 118 * Bring RVB_CODA1_1 to HEAD 119 * 120 * Revision 1.6.2.6 98/01/23 11:21:07 rvb 121 * Sync with 2.2.5 122 * 123 * Revision 1.6.2.5 98/01/22 13:05:33 rvb 124 * Move make_coda_node ctlfid later so vfsp is known 125 * 126 * Revision 1.6.2.4 97/12/19 14:26:05 rvb 127 * session id 128 * 129 * Revision 1.6.2.3 97/12/16 12:40:11 rvb 130 * Sync with 1.3 131 * 132 * Revision 1.6.2.2 97/12/10 11:40:25 rvb 133 * No more ody 134 * 135 * Revision 1.6.2.1 97/12/06 17:41:24 rvb 136 * Sync with peters coda.h 137 * 138 * Revision 1.6 97/12/05 10:39:21 rvb 139 * Read CHANGES 140 * 141 * Revision 1.5.14.8 97/11/24 15:44:46 rvb 142 * Final cfs_venus.c w/o macros, but one locking bug 143 * 144 * Revision 1.5.14.7 97/11/21 13:22:03 rvb 145 * Catch a few coda_calls in coda_vfsops.c 146 * 147 * Revision 1.5.14.6 97/11/20 11:46:48 rvb 148 * Capture current cfs_venus 149 * 150 * Revision 1.5.14.5 97/11/18 10:27:17 rvb 151 * cfs_nbsd.c is DEAD!!!; integrated into cfs_vf/vnops.c 152 * cfs_nb_foo and cfs_foo are joined 153 * 154 * Revision 1.5.14.4 97/11/13 22:03:01 rvb 155 * pass2 cfs_NetBSD.h mt 156 * 157 * Revision 1.5.14.3 97/11/12 12:09:40 rvb 158 * reorg pass1 159 * 160 * Revision 1.5.14.2 97/10/29 16:06:28 rvb 161 * Kill DYING 162 * 163 * Revision 1.5.14.1 1997/10/28 23:10:17 rvb 164 * >64Meg; venus can be killed! 165 * 166 * Revision 1.5 1997/01/13 17:11:07 bnoble 167 * Coda statfs needs to return something other than -1 for blocks avail. and 168 * files available for wabi (and other windowsish) programs to install 169 * there correctly. 170 * 171 * Revision 1.4 1996/12/12 22:11:00 bnoble 172 * Fixed the "downcall invokes venus operation" deadlock in all known cases. 173 * There may be more 174 * 175 * Revision 1.3 1996/11/08 18:06:12 bnoble 176 * Minor changes in vnode operation signature, VOP_UPDATE signature, and 177 * some newly defined bits in the include files. 178 * 179 * Revision 1.2 1996/01/02 16:57:04 bnoble 180 * Added support for Coda MiniCache and raw inode calls (final commit) 181 * 182 * Revision 1.1.2.1 1995/12/20 01:57:32 bnoble 183 * Added CODA-specific files 184 * 185 * Revision 3.1.1.1 1995/03/04 19:08:02 bnoble 186 * Branch for NetBSD port revisions 187 * 188 * Revision 3.1 1995/03/04 19:08:01 bnoble 189 * Bump to major revision 3 to prepare for NetBSD port 190 * 191 * Revision 2.4 1995/02/17 16:25:22 dcs 192 * These versions represent several changes: 193 * 1. Allow venus to restart even if outstanding references exist. 194 * 2. Have only one ctlvp per client, as opposed to one per mounted cfs device.d 195 * 3. Allow ody_expand to return many members, not just one. 196 * 197 * Revision 2.3 94/10/14 09:58:21 dcs 198 * Made changes 'cause sun4s have braindead compilers 199 * 200 * Revision 2.2 94/10/12 16:46:33 dcs 201 * Cleaned kernel/venus interface by removing XDR junk, plus 202 * so cleanup to allow this code to be more easily ported. 203 * 204 * Revision 1.3 93/05/28 16:24:29 bnoble 205 * *** empty log message *** 206 * 207 * Revision 1.2 92/10/27 17:58:24 lily 208 * merge kernel/latest and alpha/src/cfs 209 * 210 * Revision 2.3 92/09/30 14:16:32 mja 211 * Added call to coda_flush to coda_unmount. 212 * [90/12/15 dcs] 213 * 214 * Added contributors blurb. 215 * [90/12/13 jjk] 216 * 217 * Revision 2.2 90/07/05 11:26:40 mrt 218 * Created for the Coda File System. 219 * [90/05/23 dcs] 220 * 221 * Revision 1.3 90/05/31 17:01:42 dcs 222 * Prepare for merge with facilities kernel. 223 * 224 * 225 */ 226 227#include <vcoda.h> 228 229#include <sys/param.h> 230#include <sys/systm.h> 231#include <sys/kernel.h> 232#include <sys/proc.h> 233#include <sys/malloc.h> 234#include <sys/conf.h> 235#include <sys/namei.h> 236#include <sys/mount.h> 237#include <sys/select.h> 238 239#include <coda/coda.h> 240#include <coda/cnode.h> 241#include <coda/coda_vfsops.h> 242#include <coda/coda_venus.h> 243#include <coda/coda_subr.h> 244#include <coda/coda_opstats.h> 245 246#include <miscfs/specfs/specdev.h> 247 248MALLOC_DEFINE(M_CODA, "CODA storage", "Various Coda Structures"); 249 250int codadebug = 0; 251int coda_vfsop_print_entry = 0; 252#define ENTRY if(coda_vfsop_print_entry) myprintf(("Entered %s\n",__FUNCTION__)) 253 254struct vnode *coda_ctlvp; 255struct coda_mntinfo coda_mnttbl[NVCODA]; /* indexed by minor device number */ 256 257/* structure to keep statistics of internally generated/satisfied calls */ 258 259struct coda_op_stats coda_vfsopstats[CODA_VFSOPS_SIZE]; 260 261#define MARK_ENTRY(op) (coda_vfsopstats[op].entries++) 262#define MARK_INT_SAT(op) (coda_vfsopstats[op].sat_intrn++) 263#define MARK_INT_FAIL(op) (coda_vfsopstats[op].unsat_intrn++) 264#define MRAK_INT_GEN(op) (coda_vfsopstats[op].gen_intrn++) 265 266extern int coda_nc_initialized; /* Set if cache has been initialized */ 267extern int vc_nb_open __P((dev_t, int, int, struct proc *)); 268 269int 270coda_vfsopstats_init(void) 271{ 272 register int i; 273 274 for (i=0;i<CODA_VFSOPS_SIZE;i++) { 275 coda_vfsopstats[i].opcode = i; 276 coda_vfsopstats[i].entries = 0; 277 coda_vfsopstats[i].sat_intrn = 0; 278 coda_vfsopstats[i].unsat_intrn = 0; 279 coda_vfsopstats[i].gen_intrn = 0; 280 } 281 282 return 0; 283} 284 285/* 286 * cfs mount vfsop 287 * Set up mount info record and attach it to vfs struct. 288 */ 289/*ARGSUSED*/ 290int 291coda_mount(vfsp, path, data, ndp, p) 292 struct mount *vfsp; /* Allocated and initialized by mount(2) */ 293 char *path; /* path covered: ignored by the fs-layer */ 294 caddr_t data; /* Need to define a data type for this in netbsd? */ 295 struct nameidata *ndp; /* Clobber this to lookup the device name */ 296 struct proc *p; /* The ever-famous proc pointer */ 297{ 298 struct vnode *dvp; 299 struct cnode *cp; 300 dev_t dev; 301 struct coda_mntinfo *mi; 302 struct vnode *rootvp; 303 ViceFid rootfid; 304 ViceFid ctlfid; 305 int error; 306 307 ENTRY; 308 309 coda_vfsopstats_init(); 310 coda_vnodeopstats_init(); 311 312 MARK_ENTRY(CODA_MOUNT_STATS); 313 if (CODA_MOUNTED(vfsp)) { 314 MARK_INT_FAIL(CODA_MOUNT_STATS); 315 return(EBUSY); 316 } 317 318 /* Validate mount device. Similar to getmdev(). */ 319 320 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, data, p); 321 error = namei(ndp); 322 dvp = ndp->ni_vp; 323 324 if (error) { 325 MARK_INT_FAIL(CODA_MOUNT_STATS); 326 return (error); 327 } 328 if (dvp->v_type != VCHR) { 329 MARK_INT_FAIL(CODA_MOUNT_STATS); 330 vrele(dvp); 331 return(ENXIO); 332 } 333 dev = dvp->v_specinfo->si_rdev; 334 vrele(dvp); 335 if (major(dev) >= nchrdev || major(dev) < 0) { 336 MARK_INT_FAIL(CODA_MOUNT_STATS); 337 return(ENXIO); 338 } 339 340 /* 341 * See if the device table matches our expectations. 342 */ 343 if (devsw(dev)->d_open != vc_nb_open) 344 { 345 MARK_INT_FAIL(CODA_MOUNT_STATS); 346 return(ENXIO); 347 } 348 349 if (minor(dev) >= NVCODA || minor(dev) < 0) { 350 MARK_INT_FAIL(CODA_MOUNT_STATS); 351 return(ENXIO); 352 } 353 354 /* 355 * Initialize the mount record and link it to the vfs struct 356 */ 357 mi = &coda_mnttbl[minor(dev)]; 358 359 if (!VC_OPEN(&mi->mi_vcomm)) { 360 MARK_INT_FAIL(CODA_MOUNT_STATS); 361 return(ENODEV); 362 } 363 364 /* No initialization (here) of mi_vcomm! */ 365 vfsp->mnt_data = (qaddr_t)mi; 366 vfs_getnewfsid (vfsp); 367 368 mi->mi_vfsp = vfsp; 369 370 /* 371 * Make a root vnode to placate the Vnode interface, but don't 372 * actually make the CODA_ROOT call to venus until the first call 373 * to coda_root in case a server is down while venus is starting. 374 */ 375 rootfid.Volume = 0; 376 rootfid.Vnode = 0; 377 rootfid.Unique = 0; 378 cp = make_coda_node(&rootfid, vfsp, VDIR); 379 rootvp = CTOV(cp); 380 rootvp->v_flag |= VROOT; 381 382 ctlfid.Volume = CTL_VOL; 383 ctlfid.Vnode = CTL_VNO; 384 ctlfid.Unique = CTL_UNI; 385/* cp = make_coda_node(&ctlfid, vfsp, VCHR); 386 The above code seems to cause a loop in the cnode links. 387 I don't totally understand when it happens, it is caught 388 when closing down the system. 389 */ 390 cp = make_coda_node(&ctlfid, 0, VCHR); 391 392 coda_ctlvp = CTOV(cp); 393 394 /* Add vfs and rootvp to chain of vfs hanging off mntinfo */ 395 mi->mi_vfsp = vfsp; 396 mi->mi_rootvp = rootvp; 397 398 /* set filesystem block size */ 399 vfsp->mnt_stat.f_bsize = 8192; /* XXX -JJK */ 400 401 /* Set f_iosize. XXX -- inamura@isl.ntt.co.jp. 402 For vnode_pager_haspage() references. The value should be obtained 403 from underlying UFS. */ 404 /* Checked UFS. iosize is set as 8192 */ 405 vfsp->mnt_stat.f_iosize = 8192; 406 407 /* error is currently guaranteed to be zero, but in case some 408 code changes... */ 409 CODADEBUG(1, 410 myprintf(("coda_mount returned %d\n",error));); 411 if (error) 412 MARK_INT_FAIL(CODA_MOUNT_STATS); 413 else 414 MARK_INT_SAT(CODA_MOUNT_STATS); 415 416 return(error); 417} 418 419int 420coda_start(vfsp, flags, p) 421 struct mount *vfsp; 422 int flags; 423 struct proc *p; 424{ 425 ENTRY; 426 return (0); 427} 428 429int 430coda_unmount(vfsp, mntflags, p) 431 struct mount *vfsp; 432 int mntflags; 433 struct proc *p; 434{ 435 struct coda_mntinfo *mi = vftomi(vfsp); 436 int active, error = 0; 437 438 ENTRY; 439 MARK_ENTRY(CODA_UMOUNT_STATS); 440 if (!CODA_MOUNTED(vfsp)) { 441 MARK_INT_FAIL(CODA_UMOUNT_STATS); 442 return(EINVAL); 443 } 444 445 if (mi->mi_vfsp == vfsp) { /* We found the victim */ 446 if (!IS_UNMOUNTING(VTOC(mi->mi_rootvp))) 447 return (EBUSY); /* Venus is still running */ 448 449#ifdef DEBUG 450 printf("coda_unmount: ROOT: vp %p, cp %p\n", mi->mi_rootvp, VTOC(mi->mi_rootvp)); 451#endif 452 vrele(mi->mi_rootvp); 453 454 active = coda_kill(vfsp, NOT_DOWNCALL); 455 mi->mi_rootvp->v_flag &= ~VROOT; 456 error = vflush(mi->mi_vfsp, NULLVP, FORCECLOSE); 457 printf("coda_unmount: active = %d, vflush active %d\n", active, error); 458 error = 0; 459 /* I'm going to take this out to allow lookups to go through. I'm 460 * not sure it's important anyway. -- DCS 2/2/94 461 */ 462 /* vfsp->VFS_DATA = NULL; */ 463 464 /* No more vfsp's to hold onto */ 465 mi->mi_vfsp = NULL; 466 mi->mi_rootvp = NULL; 467 468 if (error) 469 MARK_INT_FAIL(CODA_UMOUNT_STATS); 470 else 471 MARK_INT_SAT(CODA_UMOUNT_STATS); 472 473 return(error); 474 } 475 return (EINVAL); 476} 477 478/* 479 * find root of cfs 480 */ 481int 482coda_root(vfsp, vpp) 483 struct mount *vfsp; 484 struct vnode **vpp; 485{ 486 struct coda_mntinfo *mi = vftomi(vfsp); 487 struct vnode **result; 488 int error; 489 struct proc *p = curproc; /* XXX - bnoble */ 490 ViceFid VFid; 491 492 ENTRY; 493 MARK_ENTRY(CODA_ROOT_STATS); 494 result = NULL; 495 496 if (vfsp == mi->mi_vfsp) { 497 if ((VTOC(mi->mi_rootvp)->c_fid.Volume != 0) || 498 (VTOC(mi->mi_rootvp)->c_fid.Vnode != 0) || 499 (VTOC(mi->mi_rootvp)->c_fid.Unique != 0)) 500 { /* Found valid root. */ 501 *vpp = mi->mi_rootvp; 502 /* On Mach, this is vref. On NetBSD, VOP_LOCK */ 503#if 1 504 vref(*vpp); 505 vn_lock(*vpp, LK_EXCLUSIVE, p); 506#else 507 vget(*vpp, LK_EXCLUSIVE, p); 508#endif 509 MARK_INT_SAT(CODA_ROOT_STATS); 510 return(0); 511 } 512 } 513 514 error = venus_root(vftomi(vfsp), p->p_cred->pc_ucred, p, &VFid); 515 516 if (!error) { 517 /* 518 * Save the new rootfid in the cnode, and rehash the cnode into the 519 * cnode hash with the new fid key. 520 */ 521 coda_unsave(VTOC(mi->mi_rootvp)); 522 VTOC(mi->mi_rootvp)->c_fid = VFid; 523 coda_save(VTOC(mi->mi_rootvp)); 524 525 *vpp = mi->mi_rootvp; 526#if 1 527 vref(*vpp); 528 vn_lock(*vpp, LK_EXCLUSIVE, p); 529#else 530 vget(*vpp, LK_EXCLUSIVE, p); 531#endif 532 533 MARK_INT_SAT(CODA_ROOT_STATS); 534 goto exit; 535 } else if (error == ENODEV || error == EINTR) { 536 /* Gross hack here! */ 537 /* 538 * If Venus fails to respond to the CODA_ROOT call, coda_call returns 539 * ENODEV. Return the uninitialized root vnode to allow vfs 540 * operations such as unmount to continue. Without this hack, 541 * there is no way to do an unmount if Venus dies before a 542 * successful CODA_ROOT call is done. All vnode operations 543 * will fail. 544 */ 545 *vpp = mi->mi_rootvp; 546#if 1 547 vref(*vpp); 548 vn_lock(*vpp, LK_EXCLUSIVE, p); 549#else 550 vget(*vpp, LK_EXCLUSIVE, p); 551#endif 552 553 MARK_INT_FAIL(CODA_ROOT_STATS); 554 error = 0; 555 goto exit; 556 } else { 557 CODADEBUG( CODA_ROOT, myprintf(("error %d in CODA_ROOT\n", error)); ); 558 MARK_INT_FAIL(CODA_ROOT_STATS); 559 560 goto exit; 561 } 562 563 exit: 564 return(error); 565} 566 567int 568coda_quotactl(vfsp, cmd, uid, arg, p) 569 struct mount *vfsp; 570 int cmd; 571 uid_t uid; 572 caddr_t arg; 573 struct proc *p; 574{ 575 ENTRY; 576 return (EOPNOTSUPP); 577} 578 579/* 580 * Get file system statistics. 581 */ 582int 583coda_nb_statfs(vfsp, sbp, p) 584 register struct mount *vfsp; 585 struct statfs *sbp; 586 struct proc *p; 587{ 588 ENTRY; 589/* MARK_ENTRY(CODA_STATFS_STATS); */ 590 if (!CODA_MOUNTED(vfsp)) { 591/* MARK_INT_FAIL(CODA_STATFS_STATS);*/ 592 return(EINVAL); 593 } 594 595 bzero(sbp, sizeof(struct statfs)); 596 /* XXX - what to do about f_flags, others? --bnoble */ 597 /* Below This is what AFS does 598 #define NB_SFS_SIZ 0x895440 599 */ 600 /* Note: Normal fs's have a bsize of 0x400 == 1024 */ 601 sbp->f_type = vfsp->mnt_vfc->vfc_typenum; 602 sbp->f_bsize = 8192; /* XXX */ 603 sbp->f_iosize = 8192; /* XXX */ 604#define NB_SFS_SIZ 0x8AB75D 605 sbp->f_blocks = NB_SFS_SIZ; 606 sbp->f_bfree = NB_SFS_SIZ; 607 sbp->f_bavail = NB_SFS_SIZ; 608 sbp->f_files = NB_SFS_SIZ; 609 sbp->f_ffree = NB_SFS_SIZ; 610 bcopy((caddr_t)&(vfsp->mnt_stat.f_fsid), (caddr_t)&(sbp->f_fsid), sizeof (fsid_t)); 611 snprintf(sbp->f_mntonname, sizeof(sbp->f_mntonname), "/coda"); 612 snprintf(sbp->f_mntfromname, sizeof(sbp->f_mntfromname), "CODA"); 613/* MARK_INT_SAT(CODA_STATFS_STATS); */ 614 return(0); 615} 616 617/* 618 * Flush any pending I/O. 619 */ 620int 621coda_sync(vfsp, waitfor, cred, p) 622 struct mount *vfsp; 623 int waitfor; 624 struct ucred *cred; 625 struct proc *p; 626{ 627 ENTRY; 628 MARK_ENTRY(CODA_SYNC_STATS); 629 MARK_INT_SAT(CODA_SYNC_STATS); 630 return(0); 631} 632 633int 634coda_vget(vfsp, ino, vpp) 635 struct mount *vfsp; 636 ino_t ino; 637 struct vnode **vpp; 638{ 639 ENTRY; 640 return (EOPNOTSUPP); 641} 642 643/* 644 * fhtovp is now what vget used to be in 4.3-derived systems. For 645 * some silly reason, vget is now keyed by a 32 bit ino_t, rather than 646 * a type-specific fid. 647 */ 648int 649coda_fhtovp(vfsp, fhp, nam, vpp, exflagsp, creadanonp) 650 register struct mount *vfsp; 651 struct fid *fhp; 652 struct mbuf *nam; 653 struct vnode **vpp; 654 int *exflagsp; 655 struct ucred **creadanonp; 656{ 657 struct cfid *cfid = (struct cfid *)fhp; 658 struct cnode *cp = 0; 659 int error; 660 struct proc *p = curproc; /* XXX -mach */ 661 ViceFid VFid; 662 int vtype; 663 664 ENTRY; 665 666 MARK_ENTRY(CODA_VGET_STATS); 667 /* Check for vget of control object. */ 668 if (IS_CTL_FID(&cfid->cfid_fid)) { 669 *vpp = coda_ctlvp; 670 vref(coda_ctlvp); 671 MARK_INT_SAT(CODA_VGET_STATS); 672 return(0); 673 } 674 675 error = venus_fhtovp(vftomi(vfsp), &cfid->cfid_fid, p->p_cred->pc_ucred, p, &VFid, &vtype); 676 677 if (error) { 678 CODADEBUG(CODA_VGET, myprintf(("vget error %d\n",error));) 679 *vpp = (struct vnode *)0; 680 } else { 681 CODADEBUG(CODA_VGET, 682 myprintf(("vget: vol %lx vno %lx uni %lx type %d result %d\n", 683 VFid.Volume, VFid.Vnode, VFid.Unique, vtype, error)); ) 684 685 cp = make_coda_node(&VFid, vfsp, vtype); 686 *vpp = CTOV(cp); 687 } 688 return(error); 689} 690 691int 692coda_vptofh(vnp, fidp) 693 struct vnode *vnp; 694 struct fid *fidp; 695{ 696 ENTRY; 697 return (EOPNOTSUPP); 698} 699 700int 701coda_init(struct vfsconf *vfsp) 702{ 703 ENTRY; 704 return 0; 705} 706 707/* 708 * To allow for greater ease of use, some vnodes may be orphaned when 709 * Venus dies. Certain operations should still be allowed to go 710 * through, but without propagating ophan-ness. So this function will 711 * get a new vnode for the file from the current run of Venus. */ 712 713int 714getNewVnode(vpp) 715 struct vnode **vpp; 716{ 717 struct cfid cfid; 718 struct coda_mntinfo *mi = vftomi((*vpp)->v_mount); 719 720 ENTRY; 721 722 cfid.cfid_len = (short)sizeof(ViceFid); 723 cfid.cfid_fid = VTOC(*vpp)->c_fid; /* Structure assignment. */ 724 /* XXX ? */ 725 726 /* We're guessing that if set, the 1st element on the list is a 727 * valid vnode to use. If not, return ENODEV as venus is dead. 728 */ 729 if (mi->mi_vfsp == NULL) 730 return ENODEV; 731 732 return coda_fhtovp(mi->mi_vfsp, (struct fid*)&cfid, NULL, vpp, 733 NULL, NULL); 734} 735 736#include <ufs/ufs/quota.h> 737#include <ufs/ufs/ufsmount.h> 738/* get the mount structure corresponding to a given device. Assume 739 * device corresponds to a UFS. Return NULL if no device is found. 740 */ 741struct mount *devtomp(dev) 742 dev_t dev; 743{ 744 struct mount *mp, *nmp; 745 746 for (mp = mountlist.cqh_first; mp != (void*)&mountlist; mp = nmp) { 747 nmp = mp->mnt_list.cqe_next; 748 if (((VFSTOUFS(mp))->um_dev == (dev_t) dev)) { 749 /* mount corresponds to UFS and the device matches one we want */ 750 return(mp); 751 } 752 } 753 /* mount structure wasn't found */ 754 return(NULL); 755} 756 757struct vfsops coda_vfsops = { 758 coda_mount, 759 coda_start, 760 coda_unmount, 761 coda_root, 762 coda_quotactl, 763 coda_nb_statfs, 764 coda_sync, 765 coda_vget, 766 (int (*) (struct mount *, struct fid *, struct sockaddr *, struct vnode **, 767 int *, struct ucred **)) 768 eopnotsupp, 769 (int (*) (struct vnode *, struct fid *)) eopnotsupp, 770 coda_init, 771}; 772 773VFS_SET(coda_vfsops, coda, VFCF_NETWORK); 774