1 /*- 2 * Copyright (c) 2011-2013 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/nlookup.h> 38 #include <sys/vnode.h> 39 #include <sys/mount.h> 40 #include <sys/fcntl.h> 41 #include <sys/buf.h> 42 #include <sys/uuid.h> 43 #include <sys/vfsops.h> 44 #include <sys/sysctl.h> 45 #include <sys/socket.h> 46 47 #include "hammer2.h" 48 #include "hammer2_disk.h" 49 #include "hammer2_mount.h" 50 51 #define REPORT_REFS_ERRORS 1 /* XXX remove me */ 52 53 struct hammer2_sync_info { 54 hammer2_trans_t trans; 55 int error; 56 int waitfor; 57 }; 58 59 TAILQ_HEAD(hammer2_mntlist, hammer2_mount); 60 static struct hammer2_mntlist hammer2_mntlist; 61 static struct lock hammer2_mntlk; 62 63 int hammer2_debug; 64 int hammer2_cluster_enable = 1; 65 int hammer2_hardlink_enable = 1; 66 long hammer2_iod_file_read; 67 long hammer2_iod_meta_read; 68 long hammer2_iod_indr_read; 69 long hammer2_iod_file_write; 70 long hammer2_iod_meta_write; 71 long hammer2_iod_indr_write; 72 long hammer2_iod_fmap_write; 73 long hammer2_iod_volu_write; 74 long hammer2_ioa_file_read; 75 long hammer2_ioa_meta_read; 76 long hammer2_ioa_indr_read; 77 long hammer2_ioa_fmap_write; 78 long hammer2_ioa_file_write; 79 long hammer2_ioa_meta_write; 80 long hammer2_ioa_indr_write; 81 long hammer2_ioa_volu_write; 82 83 SYSCTL_NODE(_vfs, OID_AUTO, hammer2, CTLFLAG_RW, 0, "HAMMER2 filesystem"); 84 85 SYSCTL_INT(_vfs_hammer2, OID_AUTO, debug, CTLFLAG_RW, 86 &hammer2_debug, 0, ""); 87 SYSCTL_INT(_vfs_hammer2, OID_AUTO, cluster_enable, CTLFLAG_RW, 88 &hammer2_cluster_enable, 0, ""); 89 SYSCTL_INT(_vfs_hammer2, OID_AUTO, hardlink_enable, CTLFLAG_RW, 90 &hammer2_hardlink_enable, 0, ""); 91 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, iod_file_read, CTLFLAG_RW, 92 &hammer2_iod_file_read, 0, ""); 93 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, iod_meta_read, CTLFLAG_RW, 94 &hammer2_iod_meta_read, 0, ""); 95 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, iod_indr_read, CTLFLAG_RW, 96 &hammer2_iod_indr_read, 0, ""); 97 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, iod_file_write, CTLFLAG_RW, 98 &hammer2_iod_file_write, 0, ""); 99 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, iod_meta_write, CTLFLAG_RW, 100 &hammer2_iod_meta_write, 0, ""); 101 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, iod_indr_write, CTLFLAG_RW, 102 &hammer2_iod_indr_write, 0, ""); 103 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, iod_volu_write, CTLFLAG_RW, 104 &hammer2_iod_volu_write, 0, ""); 105 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, ioa_file_read, CTLFLAG_RW, 106 &hammer2_ioa_file_read, 0, ""); 107 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, ioa_meta_read, CTLFLAG_RW, 108 &hammer2_ioa_meta_read, 0, ""); 109 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, ioa_indr_read, CTLFLAG_RW, 110 &hammer2_ioa_indr_read, 0, ""); 111 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, ioa_file_write, CTLFLAG_RW, 112 &hammer2_ioa_file_write, 0, ""); 113 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, ioa_meta_write, CTLFLAG_RW, 114 &hammer2_ioa_meta_write, 0, ""); 115 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, ioa_indr_write, CTLFLAG_RW, 116 &hammer2_ioa_indr_write, 0, ""); 117 SYSCTL_LONG(_vfs_hammer2, OID_AUTO, ioa_volu_write, CTLFLAG_RW, 118 &hammer2_ioa_volu_write, 0, ""); 119 120 static int hammer2_vfs_init(struct vfsconf *conf); 121 static int hammer2_vfs_mount(struct mount *mp, char *path, caddr_t data, 122 struct ucred *cred); 123 static int hammer2_remount(struct mount *, char *, struct vnode *, 124 struct ucred *); 125 static int hammer2_vfs_unmount(struct mount *mp, int mntflags); 126 static int hammer2_vfs_root(struct mount *mp, struct vnode **vpp); 127 static int hammer2_vfs_statfs(struct mount *mp, struct statfs *sbp, 128 struct ucred *cred); 129 static int hammer2_vfs_statvfs(struct mount *mp, struct statvfs *sbp, 130 struct ucred *cred); 131 static int hammer2_vfs_sync(struct mount *mp, int waitfor); 132 static int hammer2_vfs_vget(struct mount *mp, struct vnode *dvp, 133 ino_t ino, struct vnode **vpp); 134 static int hammer2_vfs_fhtovp(struct mount *mp, struct vnode *rootvp, 135 struct fid *fhp, struct vnode **vpp); 136 static int hammer2_vfs_vptofh(struct vnode *vp, struct fid *fhp); 137 static int hammer2_vfs_checkexp(struct mount *mp, struct sockaddr *nam, 138 int *exflagsp, struct ucred **credanonp); 139 140 static int hammer2_install_volume_header(hammer2_mount_t *hmp); 141 static int hammer2_sync_scan1(struct mount *mp, struct vnode *vp, void *data); 142 static int hammer2_sync_scan2(struct mount *mp, struct vnode *vp, void *data); 143 144 static int hammer2_rcvdmsg(kdmsg_msg_t *msg); 145 static void hammer2_autodmsg(kdmsg_msg_t *msg); 146 147 /* 148 * HAMMER2 vfs operations. 149 */ 150 static struct vfsops hammer2_vfsops = { 151 .vfs_init = hammer2_vfs_init, 152 .vfs_sync = hammer2_vfs_sync, 153 .vfs_mount = hammer2_vfs_mount, 154 .vfs_unmount = hammer2_vfs_unmount, 155 .vfs_root = hammer2_vfs_root, 156 .vfs_statfs = hammer2_vfs_statfs, 157 .vfs_statvfs = hammer2_vfs_statvfs, 158 .vfs_vget = hammer2_vfs_vget, 159 .vfs_vptofh = hammer2_vfs_vptofh, 160 .vfs_fhtovp = hammer2_vfs_fhtovp, 161 .vfs_checkexp = hammer2_vfs_checkexp 162 }; 163 164 MALLOC_DEFINE(M_HAMMER2, "HAMMER2-mount", ""); 165 166 VFS_SET(hammer2_vfsops, hammer2, 0); 167 MODULE_VERSION(hammer2, 1); 168 169 static 170 int 171 hammer2_vfs_init(struct vfsconf *conf) 172 { 173 int error; 174 175 error = 0; 176 177 if (HAMMER2_BLOCKREF_BYTES != sizeof(struct hammer2_blockref)) 178 error = EINVAL; 179 if (HAMMER2_INODE_BYTES != sizeof(struct hammer2_inode_data)) 180 error = EINVAL; 181 if (HAMMER2_VOLUME_BYTES != sizeof(struct hammer2_volume_data)) 182 error = EINVAL; 183 184 if (error) 185 kprintf("HAMMER2 structure size mismatch; cannot continue.\n"); 186 187 lockinit(&hammer2_mntlk, "mntlk", 0, 0); 188 TAILQ_INIT(&hammer2_mntlist); 189 190 return (error); 191 } 192 193 /* 194 * Mount or remount HAMMER2 fileystem from physical media 195 * 196 * mountroot 197 * mp mount point structure 198 * path NULL 199 * data <unused> 200 * cred <unused> 201 * 202 * mount 203 * mp mount point structure 204 * path path to mount point 205 * data pointer to argument structure in user space 206 * volume volume path (device@LABEL form) 207 * hflags user mount flags 208 * cred user credentials 209 * 210 * RETURNS: 0 Success 211 * !0 error number 212 */ 213 static 214 int 215 hammer2_vfs_mount(struct mount *mp, char *path, caddr_t data, 216 struct ucred *cred) 217 { 218 struct hammer2_mount_info info; 219 hammer2_pfsmount_t *pmp; 220 hammer2_mount_t *hmp; 221 hammer2_key_t lhc; 222 struct vnode *devvp; 223 struct nlookupdata nd; 224 hammer2_chain_t *parent; 225 hammer2_chain_t *schain; 226 hammer2_chain_t *rchain; 227 struct file *fp; 228 char devstr[MNAMELEN]; 229 size_t size; 230 size_t done; 231 char *dev; 232 char *label; 233 int ronly = 1; 234 int create_hmp; 235 int error; 236 237 hmp = NULL; 238 pmp = NULL; 239 dev = NULL; 240 label = NULL; 241 devvp = NULL; 242 243 kprintf("hammer2_mount\n"); 244 245 if (path == NULL) { 246 /* 247 * Root mount 248 */ 249 bzero(&info, sizeof(info)); 250 info.cluster_fd = -1; 251 return (EOPNOTSUPP); 252 } else { 253 /* 254 * Non-root mount or updating a mount 255 */ 256 error = copyin(data, &info, sizeof(info)); 257 if (error) 258 return (error); 259 260 error = copyinstr(info.volume, devstr, MNAMELEN - 1, &done); 261 if (error) 262 return (error); 263 264 /* Extract device and label */ 265 dev = devstr; 266 label = strchr(devstr, '@'); 267 if (label == NULL || 268 ((label + 1) - dev) > done) { 269 return (EINVAL); 270 } 271 *label = '\0'; 272 label++; 273 if (*label == '\0') 274 return (EINVAL); 275 276 if (mp->mnt_flag & MNT_UPDATE) { 277 /* Update mount */ 278 /* HAMMER2 implements NFS export via mountctl */ 279 hmp = MPTOHMP(mp); 280 devvp = hmp->devvp; 281 error = hammer2_remount(mp, path, devvp, cred); 282 return error; 283 } 284 } 285 286 /* 287 * PFS mount 288 * 289 * Lookup name and verify it refers to a block device. 290 */ 291 error = nlookup_init(&nd, dev, UIO_SYSSPACE, NLC_FOLLOW); 292 if (error == 0) 293 error = nlookup(&nd); 294 if (error == 0) 295 error = cache_vref(&nd.nl_nch, nd.nl_cred, &devvp); 296 nlookup_done(&nd); 297 298 if (error == 0) { 299 if (vn_isdisk(devvp, &error)) 300 error = vfs_mountedon(devvp); 301 } 302 303 /* 304 * Determine if the device has already been mounted. After this 305 * check hmp will be non-NULL if we are doing the second or more 306 * hammer2 mounts from the same device. 307 */ 308 lockmgr(&hammer2_mntlk, LK_EXCLUSIVE); 309 TAILQ_FOREACH(hmp, &hammer2_mntlist, mntentry) { 310 if (hmp->devvp == devvp) 311 break; 312 } 313 314 /* 315 * Open the device if this isn't a secondary mount 316 */ 317 if (hmp) { 318 create_hmp = 0; 319 } else { 320 create_hmp = 1; 321 if (error == 0 && vcount(devvp) > 0) 322 error = EBUSY; 323 324 /* 325 * Now open the device 326 */ 327 if (error == 0) { 328 ronly = ((mp->mnt_flag & MNT_RDONLY) != 0); 329 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 330 error = vinvalbuf(devvp, V_SAVE, 0, 0); 331 if (error == 0) { 332 error = VOP_OPEN(devvp, 333 ronly ? FREAD : FREAD | FWRITE, 334 FSCRED, NULL); 335 } 336 vn_unlock(devvp); 337 } 338 if (error && devvp) { 339 vrele(devvp); 340 devvp = NULL; 341 } 342 if (error) { 343 lockmgr(&hammer2_mntlk, LK_RELEASE); 344 return error; 345 } 346 } 347 348 /* 349 * Block device opened successfully, finish initializing the 350 * mount structure. 351 * 352 * From this point on we have to call hammer2_unmount() on failure. 353 */ 354 pmp = kmalloc(sizeof(*pmp), M_HAMMER2, M_WAITOK | M_ZERO); 355 mp->mnt_data = (qaddr_t)pmp; 356 pmp->mp = mp; 357 358 kmalloc_create(&pmp->mmsg, "HAMMER2-pfsmsg"); 359 kdmsg_iocom_init(&pmp->iocom, pmp, 360 KDMSG_IOCOMF_AUTOCONN | 361 KDMSG_IOCOMF_AUTOSPAN | 362 KDMSG_IOCOMF_AUTOCIRC, 363 pmp->mmsg, hammer2_rcvdmsg); 364 365 if (create_hmp) { 366 hmp = kmalloc(sizeof(*hmp), M_HAMMER2, M_WAITOK | M_ZERO); 367 hmp->ronly = ronly; 368 hmp->devvp = devvp; 369 kmalloc_create(&hmp->minode, "HAMMER2-inodes"); 370 kmalloc_create(&hmp->mchain, "HAMMER2-chains"); 371 TAILQ_INSERT_TAIL(&hammer2_mntlist, hmp, mntentry); 372 } 373 ccms_domain_init(&pmp->ccms_dom); 374 pmp->hmp = hmp; 375 ++hmp->pmp_count; 376 lockmgr(&hammer2_mntlk, LK_RELEASE); 377 kprintf("hammer2_mount hmp=%p pmpcnt=%d\n", hmp, hmp->pmp_count); 378 379 mp->mnt_flag = MNT_LOCAL; 380 mp->mnt_kern_flag |= MNTK_ALL_MPSAFE; /* all entry pts are SMP */ 381 382 if (create_hmp) { 383 /* 384 * Presetup 385 */ 386 lockinit(&hmp->alloclk, "h2alloc", 0, 0); 387 lockinit(&hmp->voldatalk, "voldata", 0, LK_CANRECURSE); 388 389 /* 390 * vchain setup. vchain.data is special cased to NULL. 391 * vchain.refs is initialized and will never drop to 0. 392 */ 393 hmp->vchain.hmp = hmp; 394 hmp->vchain.refs = 1; 395 hmp->vchain.data = (void *)&hmp->voldata; 396 hmp->vchain.bref.type = HAMMER2_BREF_TYPE_VOLUME; 397 hmp->vchain.bref.data_off = 0 | HAMMER2_PBUFRADIX; 398 hammer2_chain_core_alloc(&hmp->vchain, NULL); 399 /* hmp->vchain.u.xxx is left NULL */ 400 401 /* 402 * Install the volume header 403 */ 404 error = hammer2_install_volume_header(hmp); 405 if (error) { 406 hammer2_vfs_unmount(mp, MNT_FORCE); 407 return error; 408 } 409 } 410 411 /* 412 * required mount structure initializations 413 */ 414 mp->mnt_stat.f_iosize = HAMMER2_PBUFSIZE; 415 mp->mnt_stat.f_bsize = HAMMER2_PBUFSIZE; 416 417 mp->mnt_vstat.f_frsize = HAMMER2_PBUFSIZE; 418 mp->mnt_vstat.f_bsize = HAMMER2_PBUFSIZE; 419 420 /* 421 * Optional fields 422 */ 423 mp->mnt_iosize_max = MAXPHYS; 424 425 /* 426 * First locate the super-root inode, which is key 0 relative to the 427 * volume header's blockset. 428 * 429 * Then locate the root inode by scanning the directory keyspace 430 * represented by the label. 431 */ 432 if (create_hmp) { 433 parent = hammer2_chain_lookup_init(&hmp->vchain, 0); 434 schain = hammer2_chain_lookup(&parent, 435 HAMMER2_SROOT_KEY, HAMMER2_SROOT_KEY, 0); 436 hammer2_chain_lookup_done(parent); 437 if (schain == NULL) { 438 kprintf("hammer2_mount: invalid super-root\n"); 439 hammer2_vfs_unmount(mp, MNT_FORCE); 440 return EINVAL; 441 } 442 hammer2_chain_ref(schain); /* for hmp->schain */ 443 hmp->schain = schain; /* left locked for inode_get */ 444 hmp->sroot = hammer2_inode_get(hmp, NULL, NULL, schain); 445 hammer2_inode_ref(hmp->sroot); /* for hmp->sroot */ 446 hammer2_inode_unlock_ex(hmp->sroot); /* eats schain lock */ 447 } else { 448 schain = hmp->schain; 449 } 450 451 /* 452 * schain only has 1 ref now for its hmp->schain assignment. 453 * Setup for lookup (which will lock it). 454 */ 455 parent = hammer2_chain_lookup_init(schain, 0); 456 lhc = hammer2_dirhash(label, strlen(label)); 457 rchain = hammer2_chain_lookup(&parent, 458 lhc, lhc + HAMMER2_DIRHASH_LOMASK, 459 0); 460 while (rchain) { 461 if (rchain->bref.type == HAMMER2_BREF_TYPE_INODE && 462 strcmp(label, rchain->data->ipdata.filename) == 0) { 463 break; 464 } 465 rchain = hammer2_chain_next(&parent, rchain, 466 lhc, lhc + HAMMER2_DIRHASH_LOMASK, 467 0); 468 } 469 hammer2_chain_lookup_done(parent); 470 if (rchain == NULL) { 471 kprintf("hammer2_mount: PFS label not found\n"); 472 hammer2_vfs_unmount(mp, MNT_FORCE); 473 return EINVAL; 474 } 475 if (rchain->flags & HAMMER2_CHAIN_MOUNTED) { 476 hammer2_chain_unlock(rchain); 477 kprintf("hammer2_mount: PFS label already mounted!\n"); 478 hammer2_vfs_unmount(mp, MNT_FORCE); 479 return EBUSY; 480 } 481 atomic_set_int(&rchain->flags, HAMMER2_CHAIN_MOUNTED); 482 483 /* 484 * NOTE: *_get() integrates chain's lock into the inode lock. 485 */ 486 hammer2_chain_ref(rchain); /* for pmp->rchain */ 487 pmp->rchain = rchain; /* left held & unlocked */ 488 pmp->iroot = hammer2_inode_get(hmp, pmp, NULL, rchain); 489 hammer2_inode_ref(pmp->iroot); /* ref for pmp->iroot */ 490 hammer2_inode_unlock_ex(pmp->iroot); /* iroot & its chain */ 491 492 kprintf("iroot %p\n", pmp->iroot); 493 494 /* 495 * Ref the cluster management messaging descriptor. The mount 496 * program deals with the other end of the communications pipe. 497 */ 498 fp = holdfp(curproc->p_fd, info.cluster_fd, -1); 499 if (fp == NULL) { 500 kprintf("hammer2_mount: bad cluster_fd!\n"); 501 hammer2_vfs_unmount(mp, MNT_FORCE); 502 return EBADF; 503 } 504 hammer2_cluster_reconnect(pmp, fp); 505 506 /* 507 * Finish setup 508 */ 509 vfs_getnewfsid(mp); 510 vfs_add_vnodeops(mp, &hammer2_vnode_vops, &mp->mnt_vn_norm_ops); 511 vfs_add_vnodeops(mp, &hammer2_spec_vops, &mp->mnt_vn_spec_ops); 512 vfs_add_vnodeops(mp, &hammer2_fifo_vops, &mp->mnt_vn_fifo_ops); 513 514 copyinstr(info.volume, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size); 515 bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 516 bzero(mp->mnt_stat.f_mntonname, sizeof(mp->mnt_stat.f_mntonname)); 517 copyinstr(path, mp->mnt_stat.f_mntonname, 518 sizeof(mp->mnt_stat.f_mntonname) - 1, 519 &size); 520 521 /* 522 * Initial statfs to prime mnt_stat. 523 */ 524 hammer2_vfs_statfs(mp, &mp->mnt_stat, cred); 525 526 return 0; 527 } 528 529 static 530 int 531 hammer2_remount(struct mount *mp, char *path, struct vnode *devvp, 532 struct ucred *cred) 533 { 534 return (0); 535 } 536 537 static 538 int 539 hammer2_vfs_unmount(struct mount *mp, int mntflags) 540 { 541 hammer2_pfsmount_t *pmp; 542 hammer2_mount_t *hmp; 543 int flags; 544 int error = 0; 545 int ronly = ((mp->mnt_flag & MNT_RDONLY) != 0); 546 struct vnode *devvp; 547 548 pmp = MPTOPMP(mp); 549 hmp = pmp->hmp; 550 flags = 0; 551 552 if (mntflags & MNT_FORCE) 553 flags |= FORCECLOSE; 554 555 hammer2_mount_exlock(hmp); 556 557 /* 558 * If mount initialization proceeded far enough we must flush 559 * its vnodes. 560 */ 561 if (pmp->iroot) 562 error = vflush(mp, 0, flags); 563 564 if (error) 565 return error; 566 567 lockmgr(&hammer2_mntlk, LK_EXCLUSIVE); 568 --hmp->pmp_count; 569 kprintf("hammer2_unmount hmp=%p pmpcnt=%d\n", hmp, hmp->pmp_count); 570 571 /* 572 * Flush any left over chains. The voldata lock is only used 573 * to synchronize against HAMMER2_CHAIN_MODIFIED_AUX. 574 */ 575 hammer2_voldata_lock(hmp); 576 if (hmp->vchain.flags & (HAMMER2_CHAIN_MODIFIED | 577 HAMMER2_CHAIN_SUBMODIFIED)) { 578 hammer2_voldata_unlock(hmp, 0); 579 hammer2_vfs_sync(mp, MNT_WAIT); 580 } else { 581 hammer2_voldata_unlock(hmp, 0); 582 } 583 if (hmp->pmp_count == 0) { 584 if (hmp->vchain.flags & (HAMMER2_CHAIN_MODIFIED | 585 HAMMER2_CHAIN_SUBMODIFIED)) { 586 kprintf("hammer2_unmount: chains left over after " 587 "final sync\n"); 588 if (hammer2_debug & 0x0010) 589 Debugger("entered debugger"); 590 } 591 } 592 593 /* 594 * Cleanup the root and super-root chain elements (which should be 595 * clean). 596 */ 597 if (pmp->iroot) { 598 hammer2_inode_lock_ex(pmp->iroot); 599 hammer2_inode_put(pmp->iroot); 600 /* lock destroyed by the put */ 601 #if REPORT_REFS_ERRORS 602 if (pmp->iroot->refs != 1) 603 kprintf("PMP->IROOT %p REFS WRONG %d\n", 604 pmp->iroot, pmp->iroot->refs); 605 #else 606 KKASSERT(pmp->iroot->refs == 1); 607 #endif 608 hammer2_inode_drop(pmp->iroot); /* ref for pmp->iroot */ 609 pmp->iroot = NULL; 610 } 611 if (pmp->rchain) { 612 atomic_clear_int(&pmp->rchain->flags, HAMMER2_CHAIN_MOUNTED); 613 #if REPORT_REFS_ERRORS 614 if (pmp->rchain->refs != 1) 615 kprintf("PMP->RCHAIN %p REFS WRONG %d\n", 616 pmp->rchain, pmp->rchain->refs); 617 #else 618 KKASSERT(pmp->rchain->refs == 1); 619 #endif 620 hammer2_chain_drop(pmp->rchain); 621 pmp->rchain = NULL; 622 } 623 ccms_domain_uninit(&pmp->ccms_dom); 624 625 /* 626 * Kill cluster controller 627 */ 628 kdmsg_iocom_uninit(&pmp->iocom); 629 630 /* 631 * If no PFS's left drop the master hammer2_mount for the device. 632 */ 633 if (hmp->pmp_count == 0) { 634 if (hmp->sroot) { 635 hammer2_inode_drop(hmp->sroot); 636 hmp->sroot = NULL; 637 } 638 if (hmp->schain) { 639 #if REPORT_REFS_ERRORS 640 if (hmp->schain->refs != 1) 641 kprintf("HMP->SCHAIN %p REFS WRONG %d\n", 642 hmp->schain, hmp->schain->refs); 643 #else 644 KKASSERT(hmp->schain->refs == 1); 645 #endif 646 hammer2_chain_drop(hmp->schain); 647 hmp->schain = NULL; 648 } 649 650 /* 651 * Finish up with the device vnode 652 */ 653 if ((devvp = hmp->devvp) != NULL) { 654 vinvalbuf(devvp, (ronly ? 0 : V_SAVE), 0, 0); 655 hmp->devvp = NULL; 656 VOP_CLOSE(devvp, (ronly ? FREAD : FREAD|FWRITE)); 657 vrele(devvp); 658 devvp = NULL; 659 } 660 } 661 hammer2_mount_unlock(hmp); 662 663 /* 664 * Final drop of embedded volume root chain to clean up 665 * vchain.core (vchain structure is not flagged ALLOCATED 666 * so it is cleaned out and then left). 667 */ 668 hammer2_chain_drop(&hmp->vchain); 669 670 pmp->mp = NULL; 671 pmp->hmp = NULL; 672 mp->mnt_data = NULL; 673 674 kmalloc_destroy(&pmp->mmsg); 675 676 kfree(pmp, M_HAMMER2); 677 if (hmp->pmp_count == 0) { 678 TAILQ_REMOVE(&hammer2_mntlist, hmp, mntentry); 679 kmalloc_destroy(&hmp->minode); 680 kmalloc_destroy(&hmp->mchain); 681 kfree(hmp, M_HAMMER2); 682 } 683 lockmgr(&hammer2_mntlk, LK_RELEASE); 684 return (error); 685 } 686 687 static 688 int 689 hammer2_vfs_vget(struct mount *mp, struct vnode *dvp, 690 ino_t ino, struct vnode **vpp) 691 { 692 kprintf("hammer2_vget\n"); 693 return (EOPNOTSUPP); 694 } 695 696 static 697 int 698 hammer2_vfs_root(struct mount *mp, struct vnode **vpp) 699 { 700 hammer2_pfsmount_t *pmp; 701 hammer2_mount_t *hmp; 702 int error; 703 struct vnode *vp; 704 705 pmp = MPTOPMP(mp); 706 hmp = pmp->hmp; 707 hammer2_mount_exlock(hmp); 708 if (pmp->iroot == NULL) { 709 *vpp = NULL; 710 error = EINVAL; 711 } else { 712 hammer2_inode_lock_sh(pmp->iroot); 713 vp = hammer2_igetv(pmp->iroot, &error); 714 hammer2_inode_unlock_sh(pmp->iroot); 715 *vpp = vp; 716 if (vp == NULL) 717 kprintf("vnodefail\n"); 718 } 719 hammer2_mount_unlock(hmp); 720 721 return (error); 722 } 723 724 /* 725 * Filesystem status 726 * 727 * XXX incorporate ipdata->inode_quota and data_quota 728 */ 729 static 730 int 731 hammer2_vfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred) 732 { 733 hammer2_pfsmount_t *pmp; 734 hammer2_mount_t *hmp; 735 736 pmp = MPTOPMP(mp); 737 hmp = MPTOHMP(mp); 738 739 mp->mnt_stat.f_files = pmp->inode_count; 740 mp->mnt_stat.f_ffree = 0; 741 mp->mnt_stat.f_blocks = hmp->voldata.allocator_size / HAMMER2_PBUFSIZE; 742 mp->mnt_stat.f_bfree = (hmp->voldata.allocator_size - 743 hmp->voldata.allocator_beg) / HAMMER2_PBUFSIZE; 744 mp->mnt_stat.f_bavail = mp->mnt_stat.f_bfree; 745 746 *sbp = mp->mnt_stat; 747 return (0); 748 } 749 750 static 751 int 752 hammer2_vfs_statvfs(struct mount *mp, struct statvfs *sbp, struct ucred *cred) 753 { 754 hammer2_pfsmount_t *pmp; 755 hammer2_mount_t *hmp; 756 757 pmp = MPTOPMP(mp); 758 hmp = MPTOHMP(mp); 759 760 mp->mnt_vstat.f_bsize = HAMMER2_PBUFSIZE; 761 mp->mnt_vstat.f_files = pmp->inode_count; 762 mp->mnt_vstat.f_ffree = 0; 763 mp->mnt_vstat.f_blocks = hmp->voldata.allocator_size / HAMMER2_PBUFSIZE; 764 mp->mnt_vstat.f_bfree = (hmp->voldata.allocator_size - 765 hmp->voldata.allocator_beg) / HAMMER2_PBUFSIZE; 766 mp->mnt_vstat.f_bavail = mp->mnt_vstat.f_bfree; 767 768 *sbp = mp->mnt_vstat; 769 return (0); 770 } 771 772 /* 773 * Sync the entire filesystem; this is called from the filesystem syncer 774 * process periodically and whenever a user calls sync(1) on the hammer 775 * mountpoint. 776 * 777 * Currently is actually called from the syncer! \o/ 778 * 779 * This task will have to snapshot the state of the dirty inode chain. 780 * From that, it will have to make sure all of the inodes on the dirty 781 * chain have IO initiated. We make sure that io is initiated for the root 782 * block. 783 * 784 * If waitfor is set, we wait for media to acknowledge the new rootblock. 785 * 786 * THINKS: side A vs side B, to have sync not stall all I/O? 787 */ 788 static 789 int 790 hammer2_vfs_sync(struct mount *mp, int waitfor) 791 { 792 struct hammer2_sync_info info; 793 hammer2_mount_t *hmp; 794 int flags; 795 int error; 796 int i; 797 798 hmp = MPTOHMP(mp); 799 800 flags = VMSC_GETVP; 801 if (waitfor & MNT_LAZY) 802 flags |= VMSC_ONEPASS; 803 804 hammer2_trans_init(&info.trans, hmp); 805 info.error = 0; 806 info.waitfor = MNT_NOWAIT; 807 vmntvnodescan(mp, flags | VMSC_NOWAIT, 808 hammer2_sync_scan1, 809 hammer2_sync_scan2, &info); 810 if (info.error == 0 && (waitfor & MNT_WAIT)) { 811 info.waitfor = waitfor; 812 vmntvnodescan(mp, flags, 813 hammer2_sync_scan1, 814 hammer2_sync_scan2, &info); 815 816 } 817 #if 0 818 if (waitfor == MNT_WAIT) { 819 /* XXX */ 820 } else { 821 /* XXX */ 822 } 823 #endif 824 hammer2_chain_lock(&hmp->vchain, HAMMER2_RESOLVE_ALWAYS); 825 if (hmp->vchain.flags & (HAMMER2_CHAIN_MODIFIED | 826 HAMMER2_CHAIN_SUBMODIFIED)) { 827 hammer2_chain_flush(&info.trans, &hmp->vchain); 828 } 829 hammer2_chain_unlock(&hmp->vchain); 830 hammer2_trans_done(&info.trans); 831 832 error = 0; 833 834 /* 835 * We can't safely flush the volume header until we have 836 * flushed any device buffers which have built up. 837 */ 838 #if 0 839 if ((waitfor & MNT_LAZY) == 0) { 840 waitfor = MNT_NOWAIT; 841 vn_lock(hmp->devvp, LK_EXCLUSIVE | LK_RETRY); 842 error = VOP_FSYNC(hmp->devvp, waitfor, 0); 843 vn_unlock(hmp->devvp); 844 } 845 #endif 846 vn_lock(hmp->devvp, LK_EXCLUSIVE | LK_RETRY); 847 error = VOP_FSYNC(hmp->devvp, MNT_WAIT, 0); 848 vn_unlock(hmp->devvp); 849 850 /* 851 * The flush code sets CHAIN_VOLUMESYNC to indicate that the 852 * volume header needs synchronization via hmp->volsync. 853 * 854 * XXX synchronize the flag & data with only this flush XXX 855 */ 856 if (error == 0 && (hmp->vchain.flags & HAMMER2_CHAIN_VOLUMESYNC)) { 857 struct buf *bp; 858 859 /* 860 * Synchronize the disk before flushing the volume 861 * header. 862 */ 863 bp = getpbuf(NULL); 864 bp->b_bio1.bio_offset = 0; 865 bp->b_bufsize = 0; 866 bp->b_bcount = 0; 867 bp->b_cmd = BUF_CMD_FLUSH; 868 bp->b_bio1.bio_done = biodone_sync; 869 bp->b_bio1.bio_flags |= BIO_SYNC; 870 vn_strategy(hmp->devvp, &bp->b_bio1); 871 biowait(&bp->b_bio1, "h2vol"); 872 relpbuf(bp, NULL); 873 874 /* 875 * Then we can safely flush the version of the volume header 876 * synchronized by the flush code. 877 */ 878 i = hmp->volhdrno + 1; 879 if (i >= HAMMER2_NUM_VOLHDRS) 880 i = 0; 881 if (i * HAMMER2_ZONE_BYTES64 + HAMMER2_SEGSIZE > 882 hmp->volsync.volu_size) { 883 i = 0; 884 } 885 kprintf("sync volhdr %d %jd\n", 886 i, (intmax_t)hmp->volsync.volu_size); 887 bp = getblk(hmp->devvp, i * HAMMER2_ZONE_BYTES64, 888 HAMMER2_PBUFSIZE, 0, 0); 889 atomic_clear_int(&hmp->vchain.flags, HAMMER2_CHAIN_VOLUMESYNC); 890 bcopy(&hmp->volsync, bp->b_data, HAMMER2_PBUFSIZE); 891 bawrite(bp); 892 hmp->volhdrno = i; 893 } 894 return (error); 895 } 896 897 /* 898 * Sync passes. 899 * 900 * NOTE: We don't test SUBMODIFIED or MOVED here because the fsync code 901 * won't flush on those flags. The syncer code above will do a 902 * general meta-data flush globally that will catch these flags. 903 */ 904 static int 905 hammer2_sync_scan1(struct mount *mp, struct vnode *vp, void *data) 906 { 907 hammer2_inode_t *ip; 908 909 ip = VTOI(vp); 910 if (vp->v_type == VNON || ip == NULL || 911 ((ip->flags & HAMMER2_INODE_MODIFIED) == 0 && 912 RB_EMPTY(&vp->v_rbdirty_tree))) { 913 return(-1); 914 } 915 return(0); 916 } 917 918 static int 919 hammer2_sync_scan2(struct mount *mp, struct vnode *vp, void *data) 920 { 921 struct hammer2_sync_info *info = data; 922 hammer2_inode_t *ip; 923 int error; 924 925 ip = VTOI(vp); 926 if (vp->v_type == VNON || vp->v_type == VBAD || 927 ((ip->flags & HAMMER2_INODE_MODIFIED) == 0 && 928 RB_EMPTY(&vp->v_rbdirty_tree))) { 929 return(0); 930 } 931 error = VOP_FSYNC(vp, MNT_NOWAIT, 0); 932 if (error) 933 info->error = error; 934 return(0); 935 } 936 937 static 938 int 939 hammer2_vfs_vptofh(struct vnode *vp, struct fid *fhp) 940 { 941 return (0); 942 } 943 944 static 945 int 946 hammer2_vfs_fhtovp(struct mount *mp, struct vnode *rootvp, 947 struct fid *fhp, struct vnode **vpp) 948 { 949 return (0); 950 } 951 952 static 953 int 954 hammer2_vfs_checkexp(struct mount *mp, struct sockaddr *nam, 955 int *exflagsp, struct ucred **credanonp) 956 { 957 return (0); 958 } 959 960 /* 961 * Support code for hammer2_mount(). Read, verify, and install the volume 962 * header into the HMP 963 * 964 * XXX read four volhdrs and use the one with the highest TID whos CRC 965 * matches. 966 * 967 * XXX check iCRCs. 968 * 969 * XXX For filesystems w/ less than 4 volhdrs, make sure to not write to 970 * nonexistant locations. 971 * 972 * XXX Record selected volhdr and ring updates to each of 4 volhdrs 973 */ 974 static 975 int 976 hammer2_install_volume_header(hammer2_mount_t *hmp) 977 { 978 hammer2_volume_data_t *vd; 979 struct buf *bp; 980 hammer2_crc32_t crc0, crc, bcrc0, bcrc; 981 int error_reported; 982 int error; 983 int valid; 984 int i; 985 986 error_reported = 0; 987 error = 0; 988 valid = 0; 989 bp = NULL; 990 991 /* 992 * There are up to 4 copies of the volume header (syncs iterate 993 * between them so there is no single master). We don't trust the 994 * volu_size field so we don't know precisely how large the filesystem 995 * is, so depend on the OS to return an error if we go beyond the 996 * block device's EOF. 997 */ 998 for (i = 0; i < HAMMER2_NUM_VOLHDRS; i++) { 999 error = bread(hmp->devvp, i * HAMMER2_ZONE_BYTES64, 1000 HAMMER2_VOLUME_BYTES, &bp); 1001 if (error) { 1002 brelse(bp); 1003 bp = NULL; 1004 continue; 1005 } 1006 1007 vd = (struct hammer2_volume_data *) bp->b_data; 1008 if ((vd->magic != HAMMER2_VOLUME_ID_HBO) && 1009 (vd->magic != HAMMER2_VOLUME_ID_ABO)) { 1010 brelse(bp); 1011 bp = NULL; 1012 continue; 1013 } 1014 1015 if (vd->magic == HAMMER2_VOLUME_ID_ABO) { 1016 /* XXX: Reversed-endianness filesystem */ 1017 kprintf("hammer2: reverse-endian filesystem detected"); 1018 brelse(bp); 1019 bp = NULL; 1020 continue; 1021 } 1022 1023 crc = vd->icrc_sects[HAMMER2_VOL_ICRC_SECT0]; 1024 crc0 = hammer2_icrc32(bp->b_data + HAMMER2_VOLUME_ICRC0_OFF, 1025 HAMMER2_VOLUME_ICRC0_SIZE); 1026 bcrc = vd->icrc_sects[HAMMER2_VOL_ICRC_SECT1]; 1027 bcrc0 = hammer2_icrc32(bp->b_data + HAMMER2_VOLUME_ICRC1_OFF, 1028 HAMMER2_VOLUME_ICRC1_SIZE); 1029 if ((crc0 != crc) || (bcrc0 != bcrc)) { 1030 kprintf("hammer2 volume header crc " 1031 "mismatch copy #%d %08x/%08x\n", 1032 i, crc0, crc); 1033 error_reported = 1; 1034 brelse(bp); 1035 bp = NULL; 1036 continue; 1037 } 1038 if (valid == 0 || hmp->voldata.mirror_tid < vd->mirror_tid) { 1039 valid = 1; 1040 hmp->voldata = *vd; 1041 hmp->volhdrno = i; 1042 } 1043 brelse(bp); 1044 bp = NULL; 1045 } 1046 if (valid) { 1047 hmp->volsync = hmp->voldata; 1048 error = 0; 1049 if (error_reported || bootverbose || 1) { /* 1/DEBUG */ 1050 kprintf("hammer2: using volume header #%d\n", 1051 hmp->volhdrno); 1052 } 1053 } else { 1054 error = EINVAL; 1055 kprintf("hammer2: no valid volume headers found!\n"); 1056 } 1057 return (error); 1058 } 1059 1060 /* 1061 * Reconnect using the passed file pointer. The caller must ref the 1062 * fp for us. 1063 */ 1064 void 1065 hammer2_cluster_reconnect(hammer2_pfsmount_t *pmp, struct file *fp) 1066 { 1067 hammer2_inode_data_t *ipdata; 1068 size_t name_len; 1069 1070 /* 1071 * Closes old comm descriptor, kills threads, cleans up 1072 * states, then installs the new descriptor and creates 1073 * new threads. 1074 */ 1075 kdmsg_iocom_reconnect(&pmp->iocom, fp, "hammer2"); 1076 1077 /* 1078 * Setup LNK_CONN fields for autoinitiated state machine 1079 */ 1080 hammer2_inode_lock_ex(pmp->iroot); 1081 ipdata = &pmp->iroot->chain->data->ipdata; 1082 pmp->iocom.auto_lnk_conn.pfs_clid = ipdata->pfs_clid; 1083 pmp->iocom.auto_lnk_conn.pfs_fsid = ipdata->pfs_fsid; 1084 pmp->iocom.auto_lnk_conn.pfs_type = ipdata->pfs_type; 1085 pmp->iocom.auto_lnk_conn.proto_version = DMSG_SPAN_PROTO_1; 1086 pmp->iocom.auto_lnk_conn.peer_type = pmp->hmp->voldata.peer_type; 1087 hammer2_inode_unlock_ex(pmp->iroot); 1088 1089 /* 1090 * Filter adjustment. Clients do not need visibility into other 1091 * clients (otherwise millions of clients would present a serious 1092 * problem). The fs_label also serves to restrict the namespace. 1093 */ 1094 pmp->iocom.auto_lnk_conn.peer_mask = 1LLU << HAMMER2_PEER_HAMMER2; 1095 pmp->iocom.auto_lnk_conn.pfs_mask = (uint64_t)-1; 1096 switch (ipdata->pfs_type) { 1097 case DMSG_PFSTYPE_CLIENT: 1098 pmp->iocom.auto_lnk_conn.peer_mask &= 1099 ~(1LLU << DMSG_PFSTYPE_CLIENT); 1100 break; 1101 default: 1102 break; 1103 } 1104 1105 name_len = ipdata->name_len; 1106 if (name_len >= sizeof(pmp->iocom.auto_lnk_conn.fs_label)) 1107 name_len = sizeof(pmp->iocom.auto_lnk_conn.fs_label) - 1; 1108 bcopy(ipdata->filename, 1109 pmp->iocom.auto_lnk_conn.fs_label, 1110 name_len); 1111 pmp->iocom.auto_lnk_conn.fs_label[name_len] = 0; 1112 1113 /* 1114 * Setup LNK_SPAN fields for autoinitiated state machine 1115 */ 1116 pmp->iocom.auto_lnk_span.pfs_clid = ipdata->pfs_clid; 1117 pmp->iocom.auto_lnk_span.pfs_fsid = ipdata->pfs_fsid; 1118 pmp->iocom.auto_lnk_span.pfs_type = ipdata->pfs_type; 1119 pmp->iocom.auto_lnk_span.peer_type = pmp->hmp->voldata.peer_type; 1120 pmp->iocom.auto_lnk_span.proto_version = DMSG_SPAN_PROTO_1; 1121 name_len = ipdata->name_len; 1122 if (name_len >= sizeof(pmp->iocom.auto_lnk_span.fs_label)) 1123 name_len = sizeof(pmp->iocom.auto_lnk_span.fs_label) - 1; 1124 bcopy(ipdata->filename, 1125 pmp->iocom.auto_lnk_span.fs_label, 1126 name_len); 1127 pmp->iocom.auto_lnk_span.fs_label[name_len] = 0; 1128 1129 kdmsg_iocom_autoinitiate(&pmp->iocom, hammer2_autodmsg); 1130 } 1131 1132 static int 1133 hammer2_rcvdmsg(kdmsg_msg_t *msg) 1134 { 1135 switch(msg->any.head.cmd & DMSGF_TRANSMASK) { 1136 case DMSG_DBG_SHELL: 1137 /* 1138 * (non-transaction) 1139 * Execute shell command (not supported atm) 1140 */ 1141 kdmsg_msg_reply(msg, DMSG_ERR_NOSUPP); 1142 break; 1143 case DMSG_DBG_SHELL | DMSGF_REPLY: 1144 /* 1145 * (non-transaction) 1146 */ 1147 if (msg->aux_data) { 1148 msg->aux_data[msg->aux_size - 1] = 0; 1149 kprintf("HAMMER2 DBG: %s\n", msg->aux_data); 1150 } 1151 break; 1152 default: 1153 /* 1154 * Unsupported message received. We only need to 1155 * reply if it's a transaction in order to close our end. 1156 * Ignore any one-way messages are any further messages 1157 * associated with the transaction. 1158 * 1159 * NOTE: This case also includes DMSG_LNK_ERROR messages 1160 * which might be one-way, replying to those would 1161 * cause an infinite ping-pong. 1162 */ 1163 if (msg->any.head.cmd & DMSGF_CREATE) 1164 kdmsg_msg_reply(msg, DMSG_ERR_NOSUPP); 1165 break; 1166 } 1167 return(0); 1168 } 1169 1170 /* 1171 * This function is called after KDMSG has automatically handled processing 1172 * of a LNK layer message (typically CONN, SPAN, or CIRC). 1173 * 1174 * We tag off the LNK_CONN to trigger our LNK_VOLCONF messages which 1175 * advertises all available hammer2 super-root volumes. 1176 */ 1177 static void 1178 hammer2_autodmsg(kdmsg_msg_t *msg) 1179 { 1180 hammer2_pfsmount_t *pmp = msg->iocom->handle; 1181 hammer2_mount_t *hmp = pmp->hmp; 1182 int copyid; 1183 1184 /* 1185 * We only care about replies to our LNK_CONN auto-request. kdmsg 1186 * has already processed the reply, we use this calback as a shim 1187 * to know when we can advertise available super-root volumes. 1188 */ 1189 if ((msg->any.head.cmd & DMSGF_TRANSMASK) != 1190 (DMSG_LNK_CONN | DMSGF_CREATE | DMSGF_REPLY) || 1191 msg->state == NULL) { 1192 return; 1193 } 1194 1195 kprintf("LNK_CONN REPLY RECEIVED CMD %08x\n", msg->any.head.cmd); 1196 1197 if (msg->any.head.cmd & DMSGF_CREATE) { 1198 kprintf("HAMMER2: VOLDATA DUMP\n"); 1199 1200 /* 1201 * Dump the configuration stored in the volume header 1202 */ 1203 hammer2_voldata_lock(hmp); 1204 for (copyid = 0; copyid < HAMMER2_COPYID_COUNT; ++copyid) { 1205 if (hmp->voldata.copyinfo[copyid].copyid == 0) 1206 continue; 1207 hammer2_volconf_update(pmp, copyid); 1208 } 1209 hammer2_voldata_unlock(hmp, 0); 1210 } 1211 if ((msg->any.head.cmd & DMSGF_DELETE) && 1212 msg->state && (msg->state->txcmd & DMSGF_DELETE) == 0) { 1213 kprintf("HAMMER2: CONN WAS TERMINATED\n"); 1214 } 1215 } 1216 1217 /* 1218 * Volume configuration updates are passed onto the userland service 1219 * daemon via the open LNK_CONN transaction. 1220 */ 1221 void 1222 hammer2_volconf_update(hammer2_pfsmount_t *pmp, int index) 1223 { 1224 hammer2_mount_t *hmp = pmp->hmp; 1225 kdmsg_msg_t *msg; 1226 1227 /* XXX interlock against connection state termination */ 1228 kprintf("volconf update %p\n", pmp->iocom.conn_state); 1229 if (pmp->iocom.conn_state) { 1230 kprintf("TRANSMIT VOLCONF VIA OPEN CONN TRANSACTION\n"); 1231 msg = kdmsg_msg_alloc_state(pmp->iocom.conn_state, 1232 DMSG_LNK_VOLCONF, NULL, NULL); 1233 msg->any.lnk_volconf.copy = hmp->voldata.copyinfo[index]; 1234 msg->any.lnk_volconf.mediaid = hmp->voldata.fsid; 1235 msg->any.lnk_volconf.index = index; 1236 kdmsg_msg_write(msg); 1237 } 1238 } 1239