coda_vfsops.c revision 1.1
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 30 /* $Header: /tank/opengrok/rsync2/NetBSD/src/sys/coda/coda_vfsops.c,v 1.1 1998/08/29 21:26:45 rvb Exp $ */ 31 32 /* 33 * Mach Operating System 34 * Copyright (c) 1989 Carnegie-Mellon University 35 * All rights reserved. The CMU software License Agreement specifies 36 * the terms and conditions for use and redistribution. 37 */ 38 39 /* 40 * This code was written for the Coda file system at Carnegie Mellon 41 * University. Contributers include David Steere, James Kistler, and 42 * M. Satyanarayanan. 43 */ 44 45 /* 46 * HISTORY 47 * $Log: coda_vfsops.c,v $ 48 * Revision 1.1 1998/08/29 21:26:45 rvb 49 * Initial revision 50 * 51 * Revision 1.11 1998/08/28 18:12:22 rvb 52 * Now it also works on FreeBSD -current. This code will be 53 * committed to the FreeBSD -current and NetBSD -current 54 * trees. It will then be tailored to the particular platform 55 * by flushing conditional code. 56 * 57 * Revision 1.10 1998/08/18 17:05:19 rvb 58 * Don't use __RCSID now 59 * 60 * Revision 1.9 1998/08/18 16:31:44 rvb 61 * Sync the code for NetBSD -current; test on 1.3 later 62 * 63 * Revision 1.8 98/02/24 22:22:48 rvb 64 * Fixes up mainly to flush iopen and friends 65 * 66 * Revision 1.7 98/01/23 11:53:45 rvb 67 * Bring RVB_CFS1_1 to HEAD 68 * 69 * Revision 1.6.2.6 98/01/23 11:21:07 rvb 70 * Sync with 2.2.5 71 * 72 * Revision 1.6.2.5 98/01/22 13:05:33 rvb 73 * Move makecfsnode ctlfid later so vfsp is known 74 * 75 * Revision 1.6.2.4 97/12/19 14:26:05 rvb 76 * session id 77 * 78 * Revision 1.6.2.3 97/12/16 12:40:11 rvb 79 * Sync with 1.3 80 * 81 * Revision 1.6.2.2 97/12/10 11:40:25 rvb 82 * No more ody 83 * 84 * Revision 1.6.2.1 97/12/06 17:41:24 rvb 85 * Sync with peters coda.h 86 * 87 * Revision 1.6 97/12/05 10:39:21 rvb 88 * Read CHANGES 89 * 90 * Revision 1.5.14.8 97/11/24 15:44:46 rvb 91 * Final cfs_venus.c w/o macros, but one locking bug 92 * 93 * Revision 1.5.14.7 97/11/21 13:22:03 rvb 94 * Catch a few cfscalls in cfs_vfsops.c 95 * 96 * Revision 1.5.14.6 97/11/20 11:46:48 rvb 97 * Capture current cfs_venus 98 * 99 * Revision 1.5.14.5 97/11/18 10:27:17 rvb 100 * cfs_nbsd.c is DEAD!!!; integrated into cfs_vf/vnops.c 101 * cfs_nb_foo and cfs_foo are joined 102 * 103 * Revision 1.5.14.4 97/11/13 22:03:01 rvb 104 * pass2 cfs_NetBSD.h mt 105 * 106 * Revision 1.5.14.3 97/11/12 12:09:40 rvb 107 * reorg pass1 108 * 109 * Revision 1.5.14.2 97/10/29 16:06:28 rvb 110 * Kill DYING 111 * 112 * Revision 1.5.14.1 1997/10/28 23:10:17 rvb 113 * >64Meg; venus can be killed! 114 * 115 * Revision 1.5 1997/01/13 17:11:07 bnoble 116 * Coda statfs needs to return something other than -1 for blocks avail. and 117 * files available for wabi (and other windowsish) programs to install 118 * there correctly. 119 * 120 * Revision 1.4 1996/12/12 22:11:00 bnoble 121 * Fixed the "downcall invokes venus operation" deadlock in all known cases. 122 * There may be more 123 * 124 * Revision 1.3 1996/11/08 18:06:12 bnoble 125 * Minor changes in vnode operation signature, VOP_UPDATE signature, and 126 * some newly defined bits in the include files. 127 * 128 * Revision 1.2 1996/01/02 16:57:04 bnoble 129 * Added support for Coda MiniCache and raw inode calls (final commit) 130 * 131 * Revision 1.1.2.1 1995/12/20 01:57:32 bnoble 132 * Added CFS-specific files 133 * 134 * Revision 3.1.1.1 1995/03/04 19:08:02 bnoble 135 * Branch for NetBSD port revisions 136 * 137 * Revision 3.1 1995/03/04 19:08:01 bnoble 138 * Bump to major revision 3 to prepare for NetBSD port 139 * 140 * Revision 2.4 1995/02/17 16:25:22 dcs 141 * These versions represent several changes: 142 * 1. Allow venus to restart even if outstanding references exist. 143 * 2. Have only one ctlvp per client, as opposed to one per mounted cfs device.d 144 * 3. Allow ody_expand to return many members, not just one. 145 * 146 * Revision 2.3 94/10/14 09:58:21 dcs 147 * Made changes 'cause sun4s have braindead compilers 148 * 149 * Revision 2.2 94/10/12 16:46:33 dcs 150 * Cleaned kernel/venus interface by removing XDR junk, plus 151 * so cleanup to allow this code to be more easily ported. 152 * 153 * Revision 1.3 93/05/28 16:24:29 bnoble 154 * *** empty log message *** 155 * 156 * Revision 1.2 92/10/27 17:58:24 lily 157 * merge kernel/latest and alpha/src/cfs 158 * 159 * Revision 2.3 92/09/30 14:16:32 mja 160 * Added call to cfs_flush to cfs_unmount. 161 * [90/12/15 dcs] 162 * 163 * Added contributors blurb. 164 * [90/12/13 jjk] 165 * 166 * Revision 2.2 90/07/05 11:26:40 mrt 167 * Created for the Coda File System. 168 * [90/05/23 dcs] 169 * 170 * Revision 1.3 90/05/31 17:01:42 dcs 171 * Prepare for merge with facilities kernel. 172 * 173 * 174 */ 175 #include <vcfs.h> 176 177 #include <sys/param.h> 178 #include <sys/systm.h> 179 #include <sys/malloc.h> 180 #include <sys/conf.h> 181 #include <sys/namei.h> 182 #include <sys/mount.h> 183 #include <sys/proc.h> 184 #include <sys/select.h> 185 186 #include <cfs/coda.h> 187 #include <cfs/cnode.h> 188 #include <cfs/cfs_vfsops.h> 189 #include <cfs/cfs_venus.h> 190 #include <cfs/cfs_subr.h> 191 #include <cfs/coda_opstats.h> 192 /* for VN_RDEV */ 193 #include <miscfs/specfs/specdev.h> 194 195 #ifdef __FreeBSD__ 196 #ifdef __FreeBSD_version 197 MALLOC_DEFINE(M_CFS, "CFS storage", "Various Coda Structures"); 198 #endif 199 #endif 200 201 int cfsdebug = 0; 202 203 int cfs_vfsop_print_entry = 0; 204 #ifdef __GNUC__ 205 #define ENTRY \ 206 if(cfs_vfsop_print_entry) myprintf(("Entered %s\n",__FUNCTION__)) 207 #else 208 #define ENTRY 209 #endif 210 211 212 struct vnode *cfs_ctlvp; 213 struct cfs_mntinfo cfs_mnttbl[NVCFS]; /* indexed by minor device number */ 214 215 /* structure to keep statistics of internally generated/satisfied calls */ 216 217 struct cfs_op_stats cfs_vfsopstats[CFS_VFSOPS_SIZE]; 218 219 #define MARK_ENTRY(op) (cfs_vfsopstats[op].entries++) 220 #define MARK_INT_SAT(op) (cfs_vfsopstats[op].sat_intrn++) 221 #define MARK_INT_FAIL(op) (cfs_vfsopstats[op].unsat_intrn++) 222 #define MRAK_INT_GEN(op) (cfs_vfsopstats[op].gen_intrn++) 223 224 extern int cfsnc_initialized; /* Set if cache has been initialized */ 225 extern int vc_nb_open __P((dev_t, int, int, struct proc *)); 226 #ifdef __NetBSD__ 227 extern struct cdevsw cdevsw[]; /* For sanity check in cfs_mount */ 228 #endif 229 /* NetBSD interface to statfs */ 230 231 #if defined(__NetBSD__) && defined(NetBSD1_3) && (NetBSD1_3 >= 5) 232 extern struct vnodeopv_desc cfs_vnodeop_opv_desc; 233 234 struct vnodeopv_desc *cfs_vnodeopv_descs[] = { 235 &cfs_vnodeop_opv_desc, 236 NULL, 237 }; 238 239 struct vfsops cfs_vfsops = { 240 MOUNT_CFS, 241 cfs_mount, 242 cfs_start, 243 cfs_unmount, 244 cfs_root, 245 cfs_quotactl, 246 cfs_nb_statfs, 247 cfs_sync, 248 cfs_vget, 249 (int (*) (struct mount *, struct fid *, struct mbuf *, struct vnode **, 250 int *, struct ucred **)) 251 eopnotsupp, 252 (int (*) (struct vnode *, struct fid *)) eopnotsupp, 253 cfs_init, 254 #if (NetBSD1_3 >= 7) 255 cfs_sysctl, 256 #endif 257 (int (*)(void)) eopnotsupp, 258 cfs_vnodeopv_descs, 259 0 260 }; 261 #elif defined(__NetBSD__) 262 struct vfsops cfs_vfsops = { 263 MOUNT_CFS, 264 cfs_mount, 265 cfs_start, 266 cfs_unmount, 267 cfs_root, 268 cfs_quotactl, 269 cfs_nb_statfs, 270 cfs_sync, 271 cfs_vget, 272 (int (*) (struct mount *, struct fid *, struct mbuf *, struct vnode **, 273 int *, struct ucred **)) 274 eopnotsupp, 275 (int (*) (struct vnode *, struct fid *)) eopnotsupp, 276 cfs_init, 277 #ifdef NetBSD1_3 278 (int (*)(void)) eopnotsupp, 279 #endif 280 0 281 }; 282 283 #elif defined(__FreeBSD__) 284 #ifdef __FreeBSD_version 285 struct vfsops cfs_vfsops = { 286 cfs_mount, 287 cfs_start, 288 cfs_unmount, 289 cfs_root, 290 cfs_quotactl, 291 cfs_nb_statfs, 292 cfs_sync, 293 cfs_vget, 294 (int (*) (struct mount *, struct fid *, struct sockaddr *, struct vnode **, 295 int *, struct ucred **)) 296 eopnotsupp, 297 (int (*) (struct vnode *, struct fid *)) eopnotsupp, 298 cfs_init, 299 }; 300 301 #else 302 struct vfsops cfs_vfsops = { 303 cfs_mount, 304 cfs_start, 305 cfs_unmount, 306 cfs_root, 307 cfs_quotactl, 308 cfs_nb_statfs, 309 cfs_sync, 310 cfs_vget, 311 (int (*) (struct mount *, struct fid *, struct mbuf *, struct vnode **, 312 int *, struct ucred **)) 313 eopnotsupp, 314 (int (*) (struct vnode *, struct fid *)) eopnotsupp, 315 cfs_init, 316 }; 317 318 #endif 319 320 321 #include <sys/kernel.h> 322 VFS_SET(cfs_vfsops, cfs, MOUNT_CFS, VFCF_NETWORK); 323 #endif 324 325 int 326 cfs_vfsopstats_init(void) 327 { 328 register int i; 329 330 for (i=0;i<CFS_VFSOPS_SIZE;i++) { 331 cfs_vfsopstats[i].opcode = i; 332 cfs_vfsopstats[i].entries = 0; 333 cfs_vfsopstats[i].sat_intrn = 0; 334 cfs_vfsopstats[i].unsat_intrn = 0; 335 cfs_vfsopstats[i].gen_intrn = 0; 336 } 337 338 return 0; 339 } 340 341 342 /* 343 * cfs mount vfsop 344 * Set up mount info record and attach it to vfs struct. 345 */ 346 /*ARGSUSED*/ 347 int 348 cfs_mount(vfsp, path, data, ndp, p) 349 struct mount *vfsp; /* Allocated and initialized by mount(2) */ 350 #ifdef NetBSD1_3 351 const char *path; /* path covered: ignored by the fs-layer */ 352 void *data; /* Need to define a data type for this in netbsd? */ 353 #else 354 char *path; /* path covered: ignored by the fs-layer */ 355 caddr_t data; /* Need to define a data type for this in netbsd? */ 356 #endif 357 struct nameidata *ndp; /* Clobber this to lookup the device name */ 358 struct proc *p; /* The ever-famous proc pointer */ 359 { 360 struct vnode *dvp; 361 struct cnode *cp; 362 dev_t dev; 363 struct cfs_mntinfo *mi; 364 struct vnode *rootvp; 365 ViceFid rootfid; 366 ViceFid ctlfid; 367 int error; 368 369 ENTRY; 370 371 cfs_vfsopstats_init(); 372 cfs_vnodeopstats_init(); 373 374 MARK_ENTRY(CFS_MOUNT_STATS); 375 if (CFS_MOUNTED(vfsp)) { 376 MARK_INT_FAIL(CFS_MOUNT_STATS); 377 return(EBUSY); 378 } 379 380 /* Validate mount device. Similar to getmdev(). */ 381 382 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, data, p); 383 error = namei(ndp); 384 dvp = ndp->ni_vp; 385 386 if (error) { 387 MARK_INT_FAIL(CFS_MOUNT_STATS); 388 return (error); 389 } 390 if (dvp->v_type != VCHR) { 391 MARK_INT_FAIL(CFS_MOUNT_STATS); 392 vrele(dvp); 393 return(ENXIO); 394 } 395 dev = dvp->v_specinfo->si_rdev; 396 vrele(dvp); 397 if (major(dev) >= nchrdev || major(dev) < 0) { 398 MARK_INT_FAIL(CFS_MOUNT_STATS); 399 return(ENXIO); 400 } 401 402 /* 403 * See if the device table matches our expectations. 404 */ 405 #ifdef __NetBSD__ 406 if (cdevsw[major(dev)].d_open != vc_nb_open) 407 #elif defined(__FreeBSD__) 408 if (cdevsw[major(dev)]->d_open != vc_nb_open) 409 #endif 410 { 411 MARK_INT_FAIL(CFS_MOUNT_STATS); 412 return(ENXIO); 413 } 414 415 if (minor(dev) >= NVCFS || minor(dev) < 0) { 416 MARK_INT_FAIL(CFS_MOUNT_STATS); 417 return(ENXIO); 418 } 419 420 /* 421 * Initialize the mount record and link it to the vfs struct 422 */ 423 mi = &cfs_mnttbl[minor(dev)]; 424 425 if (!VC_OPEN(&mi->mi_vcomm)) { 426 MARK_INT_FAIL(CFS_MOUNT_STATS); 427 return(ENODEV); 428 } 429 430 /* No initialization (here) of mi_vcomm! */ 431 vfsp->mnt_data = (qaddr_t)mi; 432 #ifdef __NetBSD__ 433 vfsp->mnt_stat.f_fsid.val[0] = 0; 434 vfsp->mnt_stat.f_fsid.val[1] = makefstype(MOUNT_CFS); 435 #elif defined(__FreeBSD__) && defined(__FreeBSD_version) 436 437 vfs_getnewfsid (vfsp); 438 439 #elif defined(__FreeBSD__) 440 /* Seems a bit overkill, since usualy /coda is the only mount point 441 * for cfs. 442 */ 443 getnewfsid (vfsp, MOUNT_CFS); 444 #endif 445 mi->mi_vfsp = vfsp; 446 447 /* 448 * Make a root vnode to placate the Vnode interface, but don't 449 * actually make the CFS_ROOT call to venus until the first call 450 * to cfs_root in case a server is down while venus is starting. 451 */ 452 rootfid.Volume = 0; 453 rootfid.Vnode = 0; 454 rootfid.Unique = 0; 455 cp = makecfsnode(&rootfid, vfsp, VDIR); 456 rootvp = CTOV(cp); 457 rootvp->v_flag |= VROOT; 458 459 ctlfid.Volume = CTL_VOL; 460 ctlfid.Vnode = CTL_VNO; 461 ctlfid.Unique = CTL_UNI; 462 /* cp = makecfsnode(&ctlfid, vfsp, VCHR); 463 The above code seems to cause a loop in the cnode links. 464 I don't totally understand when it happens, it is caught 465 when closing down the system. 466 */ 467 cp = makecfsnode(&ctlfid, 0, VCHR); 468 469 cfs_ctlvp = CTOV(cp); 470 471 /* Add vfs and rootvp to chain of vfs hanging off mntinfo */ 472 mi->mi_vfsp = vfsp; 473 mi->mi_rootvp = rootvp; 474 475 /* set filesystem block size */ 476 vfsp->mnt_stat.f_bsize = 8192; /* XXX -JJK */ 477 #ifdef __FreeBSD__ 478 /* Set f_iosize. XXX -- inamura (at) isl.ntt.co.jp. 479 For vnode_pager_haspage() references. The value should be obtained 480 from underlying UFS. */ 481 /* Checked UFS. iosize is set as 8192 */ 482 vfsp->mnt_stat.f_iosize = 8192; 483 #endif 484 485 /* error is currently guaranteed to be zero, but in case some 486 code changes... */ 487 CFSDEBUG(1, 488 myprintf(("cfs_mount returned %d\n",error));); 489 if (error) 490 MARK_INT_FAIL(CFS_MOUNT_STATS); 491 else 492 MARK_INT_SAT(CFS_MOUNT_STATS); 493 494 return(error); 495 } 496 497 int 498 cfs_start(vfsp, flags, p) 499 struct mount *vfsp; 500 int flags; 501 struct proc *p; 502 { 503 ENTRY; 504 return (0); 505 } 506 507 int 508 cfs_unmount(vfsp, mntflags, p) 509 struct mount *vfsp; 510 int mntflags; 511 struct proc *p; 512 { 513 struct cfs_mntinfo *mi = vftomi(vfsp); 514 int active, error = 0; 515 516 ENTRY; 517 MARK_ENTRY(CFS_UMOUNT_STATS); 518 if (!CFS_MOUNTED(vfsp)) { 519 MARK_INT_FAIL(CFS_UMOUNT_STATS); 520 return(EINVAL); 521 } 522 523 if (mi->mi_vfsp == vfsp) { /* We found the victim */ 524 if (!IS_UNMOUNTING(VTOC(mi->mi_rootvp))) 525 return (EBUSY); /* Venus is still running */ 526 527 #ifdef DEBUG 528 printf("cfs_unmount: ROOT: vp %p, cp %p\n", mi->mi_rootvp, VTOC(mi->mi_rootvp)); 529 #endif 530 vrele(mi->mi_rootvp); 531 532 #ifdef NetBSD1_3 533 active = cfs_kill(vfsp, NOT_DOWNCALL); 534 535 #if defined(__NetBSD__) && defined(NetBSD1_3) && (NetBSD1_3 >= 7) 536 if (1) 537 #else 538 if ((error = vfs_busy(mi->mi_vfsp)) == 0) 539 #endif 540 { 541 error = vflush(mi->mi_vfsp, NULLVP, FORCECLOSE); 542 printf("cfs_unmount: active = %d, vflush active %d\n", active, error); 543 error = 0; 544 } else { 545 printf("cfs_unmount: busy\n"); 546 } 547 #else /* FreeBSD I guess */ 548 active = cfs_kill(vfsp, NOT_DOWNCALL); 549 error = vflush(mi->mi_vfsp, NULLVP, FORCECLOSE); 550 printf("cfs_unmount: active = %d, vflush active %d\n", active, error); 551 error = 0; 552 #endif 553 /* I'm going to take this out to allow lookups to go through. I'm 554 * not sure it's important anyway. -- DCS 2/2/94 555 */ 556 /* vfsp->VFS_DATA = NULL; */ 557 558 /* No more vfsp's to hold onto */ 559 mi->mi_vfsp = NULL; 560 mi->mi_rootvp = NULL; 561 562 if (error) 563 MARK_INT_FAIL(CFS_UMOUNT_STATS); 564 else 565 MARK_INT_SAT(CFS_UMOUNT_STATS); 566 567 return(error); 568 } 569 return (EINVAL); 570 } 571 572 /* 573 * find root of cfs 574 */ 575 int 576 cfs_root(vfsp, vpp) 577 struct mount *vfsp; 578 struct vnode **vpp; 579 { 580 struct cfs_mntinfo *mi = vftomi(vfsp); 581 struct vnode **result; 582 int error; 583 struct proc *p = curproc; /* XXX - bnoble */ 584 ViceFid VFid; 585 586 ENTRY; 587 MARK_ENTRY(CFS_ROOT_STATS); 588 result = NULL; 589 590 if (vfsp == mi->mi_vfsp) { 591 if ((VTOC(mi->mi_rootvp)->c_fid.Volume != 0) || 592 (VTOC(mi->mi_rootvp)->c_fid.Vnode != 0) || 593 (VTOC(mi->mi_rootvp)->c_fid.Unique != 0)) 594 { /* Found valid root. */ 595 *vpp = mi->mi_rootvp; 596 /* On Mach, this is vref. On NetBSD, VOP_LOCK */ 597 vref(*vpp); 598 VOP_X_LOCK(*vpp, LK_EXCLUSIVE); 599 MARK_INT_SAT(CFS_ROOT_STATS); 600 return(0); 601 } 602 } 603 604 error = venus_root(vftomi(vfsp), p->p_cred->pc_ucred, p, &VFid); 605 606 if (!error) { 607 /* 608 * Save the new rootfid in the cnode, and rehash the cnode into the 609 * cnode hash with the new fid key. 610 */ 611 cfs_unsave(VTOC(mi->mi_rootvp)); 612 VTOC(mi->mi_rootvp)->c_fid = VFid; 613 cfs_save(VTOC(mi->mi_rootvp)); 614 615 *vpp = mi->mi_rootvp; 616 vref(*vpp); 617 VOP_X_LOCK(*vpp, LK_EXCLUSIVE); 618 MARK_INT_SAT(CFS_ROOT_STATS); 619 goto exit; 620 } else if (error == ENODEV) { 621 /* Gross hack here! */ 622 /* 623 * If Venus fails to respond to the CFS_ROOT call, cfscall returns 624 * ENODEV. Return the uninitialized root vnode to allow vfs 625 * operations such as unmount to continue. Without this hack, 626 * there is no way to do an unmount if Venus dies before a 627 * successful CFS_ROOT call is done. All vnode operations 628 * will fail. 629 */ 630 *vpp = mi->mi_rootvp; 631 vref(*vpp); 632 VOP_X_LOCK(*vpp, LK_EXCLUSIVE); 633 MARK_INT_FAIL(CFS_ROOT_STATS); 634 error = 0; 635 goto exit; 636 } else { 637 CFSDEBUG( CFS_ROOT, myprintf(("error %d in CFS_ROOT\n", error)); ); 638 MARK_INT_FAIL(CFS_ROOT_STATS); 639 640 goto exit; 641 } 642 exit: 643 return(error); 644 } 645 646 int 647 cfs_quotactl(vfsp, cmd, uid, arg, p) 648 struct mount *vfsp; 649 int cmd; 650 uid_t uid; 651 caddr_t arg; 652 struct proc *p; 653 { 654 ENTRY; 655 return (EOPNOTSUPP); 656 } 657 658 /* 659 * Get file system statistics. 660 */ 661 int 662 cfs_nb_statfs(vfsp, sbp, p) 663 register struct mount *vfsp; 664 struct statfs *sbp; 665 struct proc *p; 666 { 667 ENTRY; 668 /* MARK_ENTRY(CFS_STATFS_STATS); */ 669 if (!CFS_MOUNTED(vfsp)) { 670 /* MARK_INT_FAIL(CFS_STATFS_STATS);*/ 671 return(EINVAL); 672 } 673 674 bzero(sbp, sizeof(struct statfs)); 675 /* XXX - what to do about f_flags, others? --bnoble */ 676 /* Below This is what AFS does 677 #define NB_SFS_SIZ 0x895440 678 */ 679 /* Note: Normal fs's have a bsize of 0x400 == 1024 */ 680 #ifdef __NetBSD__ 681 sbp->f_type = 0; 682 #elif defined(__FreeBSD__) 683 sbp->f_type = MOUNT_CFS; 684 #endif 685 sbp->f_bsize = 8192; /* XXX */ 686 sbp->f_iosize = 8192; /* XXX */ 687 #define NB_SFS_SIZ 0x8AB75D 688 sbp->f_blocks = NB_SFS_SIZ; 689 sbp->f_bfree = NB_SFS_SIZ; 690 sbp->f_bavail = NB_SFS_SIZ; 691 sbp->f_files = NB_SFS_SIZ; 692 sbp->f_ffree = NB_SFS_SIZ; 693 bcopy((caddr_t)&(vfsp->mnt_stat.f_fsid), (caddr_t)&(sbp->f_fsid), sizeof (fsid_t)); 694 #ifdef __NetBSD__ 695 strncpy(sbp->f_fstypename, MOUNT_CFS, MFSNAMELEN-1); 696 #endif 697 strcpy(sbp->f_mntonname, "/coda"); 698 strcpy(sbp->f_mntfromname, "CFS"); 699 /* MARK_INT_SAT(CFS_STATFS_STATS); */ 700 return(0); 701 } 702 703 /* 704 * Flush any pending I/O. 705 */ 706 int 707 cfs_sync(vfsp, waitfor, cred, p) 708 struct mount *vfsp; 709 int waitfor; 710 struct ucred *cred; 711 struct proc *p; 712 { 713 ENTRY; 714 MARK_ENTRY(CFS_SYNC_STATS); 715 MARK_INT_SAT(CFS_SYNC_STATS); 716 return(0); 717 } 718 719 int 720 cfs_vget(vfsp, ino, vpp) 721 struct mount *vfsp; 722 ino_t ino; 723 struct vnode **vpp; 724 { 725 ENTRY; 726 return (EOPNOTSUPP); 727 } 728 729 /* 730 * fhtovp is now what vget used to be in 4.3-derived systems. For 731 * some silly reason, vget is now keyed by a 32 bit ino_t, rather than 732 * a type-specific fid. 733 */ 734 int 735 cfs_fhtovp(vfsp, fhp, nam, vpp, exflagsp, creadanonp) 736 register struct mount *vfsp; 737 struct fid *fhp; 738 struct mbuf *nam; 739 struct vnode **vpp; 740 int *exflagsp; 741 struct ucred **creadanonp; 742 { 743 struct cfid *cfid = (struct cfid *)fhp; 744 struct cnode *cp = 0; 745 int error; 746 struct proc *p = curproc; /* XXX -mach */ 747 ViceFid VFid; 748 int vtype; 749 750 ENTRY; 751 752 MARK_ENTRY(CFS_VGET_STATS); 753 /* Check for vget of control object. */ 754 if (IS_CTL_FID(&cfid->cfid_fid)) { 755 *vpp = cfs_ctlvp; 756 vref(cfs_ctlvp); 757 MARK_INT_SAT(CFS_VGET_STATS); 758 return(0); 759 } 760 761 error = venus_fhtovp(vftomi(vfsp), &cfid->cfid_fid, p->p_cred->pc_ucred, p, &VFid, &vtype); 762 763 if (error) { 764 CFSDEBUG(CFS_VGET, myprintf(("vget error %d\n",error));) 765 *vpp = (struct vnode *)0; 766 } else { 767 CFSDEBUG(CFS_VGET, 768 myprintf(("vget: vol %lx vno %lx uni %lx type %d result %d\n", 769 VFid.Volume, VFid.Vnode, VFid.Unique, vtype, error)); ) 770 771 cp = makecfsnode(&VFid, vfsp, vtype); 772 *vpp = CTOV(cp); 773 } 774 return(error); 775 } 776 777 int 778 cfs_vptofh(vnp, fidp) 779 struct vnode *vnp; 780 struct fid *fidp; 781 { 782 ENTRY; 783 return (EOPNOTSUPP); 784 } 785 786 #ifdef __NetBSD__ 787 void 788 cfs_init(void) 789 { 790 ENTRY; 791 } 792 #elif defined(__FreeBSD__) 793 #ifdef __FreeBSD_version 794 int 795 cfs_init(struct vfsconf *vfsp) 796 { 797 ENTRY; 798 return 0; 799 } 800 #else 801 int 802 cfs_init(void) 803 { 804 ENTRY; 805 return 0; 806 } 807 #endif 808 #endif 809 810 #if defined(__NetBSD__) && defined(NetBSD1_3) && (NetBSD1_3 >= 7) 811 int 812 cfs_sysctl(name, namelen, oldp, oldlp, newp, newl, p) 813 int *name; 814 u_int namelen; 815 void *oldp; 816 size_t *oldlp; 817 void *newp; 818 size_t newl; 819 struct proc *p; 820 { 821 822 /* all sysctl names at this level are terminal */ 823 if (namelen != 1) 824 return (ENOTDIR); /* overloaded */ 825 826 switch (name[0]) { 827 /* 828 case FFS_CLUSTERREAD: 829 return (sysctl_int(oldp, oldlp, newp, newl, &doclusterread)); 830 */ 831 default: 832 return (EOPNOTSUPP); 833 } 834 /* NOTREACHED */ 835 } 836 #endif 837 838 /* 839 * To allow for greater ease of use, some vnodes may be orphaned when 840 * Venus dies. Certain operations should still be allowed to go 841 * through, but without propagating ophan-ness. So this function will 842 * get a new vnode for the file from the current run of Venus. */ 843 844 int 845 getNewVnode(vpp) 846 struct vnode **vpp; 847 { 848 struct cfid cfid; 849 struct cfs_mntinfo *mi = vftomi((*vpp)->v_mount); 850 851 ENTRY; 852 853 cfid.cfid_len = (short)sizeof(ViceFid); 854 cfid.cfid_fid = VTOC(*vpp)->c_fid; /* Structure assignment. */ 855 /* XXX ? */ 856 857 /* We're guessing that if set, the 1st element on the list is a 858 * valid vnode to use. If not, return ENODEV as venus is dead. 859 */ 860 if (mi->mi_vfsp == NULL) 861 return ENODEV; 862 863 return cfs_fhtovp(mi->mi_vfsp, (struct fid*)&cfid, NULL, vpp, 864 NULL, NULL); 865 } 866 867 #include <ufs/ufs/quota.h> 868 #include <ufs/ufs/ufsmount.h> 869 /* get the mount structure corresponding to a given device. Assume 870 * device corresponds to a UFS. Return NULL if no device is found. 871 */ 872 struct mount *devtomp(dev) 873 dev_t dev; 874 { 875 struct mount *mp, *nmp; 876 877 for (mp = mountlist.cqh_first; mp != (void*)&mountlist; mp = nmp) { 878 nmp = mp->mnt_list.cqe_next; 879 if ( 880 #ifdef __NetBSD__ 881 (!strcmp(mp->mnt_op->vfs_name, MOUNT_UFS)) && 882 #endif 883 ((VFSTOUFS(mp))->um_dev == (dev_t) dev)) { 884 /* mount corresponds to UFS and the device matches one we want */ 885 return(mp); 886 } 887 } 888 /* mount structure wasn't found */ 889 return(NULL); 890 } 891
Indexes created Thu Oct 02 01:09:59 GMT 2025