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 spin_init(&pmp->inum_spin); 359 RB_INIT(&pmp->inum_tree); 360 361 kmalloc_create(&pmp->mmsg, "HAMMER2-pfsmsg"); 362 kdmsg_iocom_init(&pmp->iocom, pmp, 363 KDMSG_IOCOMF_AUTOCONN | 364 KDMSG_IOCOMF_AUTOSPAN | 365 KDMSG_IOCOMF_AUTOCIRC, 366 pmp->mmsg, hammer2_rcvdmsg); 367 368 if (create_hmp) { 369 hmp = kmalloc(sizeof(*hmp), M_HAMMER2, M_WAITOK | M_ZERO); 370 hmp->ronly = ronly; 371 hmp->devvp = devvp; 372 kmalloc_create(&hmp->minode, "HAMMER2-inodes"); 373 kmalloc_create(&hmp->mchain, "HAMMER2-chains"); 374 TAILQ_INSERT_TAIL(&hammer2_mntlist, hmp, mntentry); 375 } 376 ccms_domain_init(&pmp->ccms_dom); 377 pmp->hmp = hmp; 378 ++hmp->pmp_count; 379 lockmgr(&hammer2_mntlk, LK_RELEASE); 380 kprintf("hammer2_mount hmp=%p pmpcnt=%d\n", hmp, hmp->pmp_count); 381 382 mp->mnt_flag = MNT_LOCAL; 383 mp->mnt_kern_flag |= MNTK_ALL_MPSAFE; /* all entry pts are SMP */ 384 385 if (create_hmp) { 386 /* 387 * Presetup 388 */ 389 lockinit(&hmp->alloclk, "h2alloc", 0, 0); 390 lockinit(&hmp->voldatalk, "voldata", 0, LK_CANRECURSE); 391 TAILQ_INIT(&hmp->transq); 392 393 /* 394 * vchain setup. vchain.data is special cased to NULL. 395 * vchain.refs is initialized and will never drop to 0. 396 */ 397 hmp->vchain.hmp = hmp; 398 hmp->vchain.refs = 1; 399 hmp->vchain.data = (void *)&hmp->voldata; 400 hmp->vchain.bref.type = HAMMER2_BREF_TYPE_VOLUME; 401 hmp->vchain.bref.data_off = 0 | HAMMER2_PBUFRADIX; 402 hammer2_chain_core_alloc(&hmp->vchain, NULL); 403 /* hmp->vchain.u.xxx is left NULL */ 404 405 /* 406 * Install the volume header 407 */ 408 error = hammer2_install_volume_header(hmp); 409 if (error) { 410 hammer2_vfs_unmount(mp, MNT_FORCE); 411 return error; 412 } 413 } 414 415 /* 416 * required mount structure initializations 417 */ 418 mp->mnt_stat.f_iosize = HAMMER2_PBUFSIZE; 419 mp->mnt_stat.f_bsize = HAMMER2_PBUFSIZE; 420 421 mp->mnt_vstat.f_frsize = HAMMER2_PBUFSIZE; 422 mp->mnt_vstat.f_bsize = HAMMER2_PBUFSIZE; 423 424 /* 425 * Optional fields 426 */ 427 mp->mnt_iosize_max = MAXPHYS; 428 429 /* 430 * First locate the super-root inode, which is key 0 relative to the 431 * volume header's blockset. 432 * 433 * Then locate the root inode by scanning the directory keyspace 434 * represented by the label. 435 */ 436 if (create_hmp) { 437 parent = hammer2_chain_lookup_init(&hmp->vchain, 0); 438 schain = hammer2_chain_lookup(&parent, 439 HAMMER2_SROOT_KEY, HAMMER2_SROOT_KEY, 0); 440 hammer2_chain_lookup_done(parent); 441 if (schain == NULL) { 442 kprintf("hammer2_mount: invalid super-root\n"); 443 hammer2_vfs_unmount(mp, MNT_FORCE); 444 return EINVAL; 445 } 446 hammer2_chain_ref(schain); /* for hmp->schain */ 447 hmp->schain = schain; /* left locked for inode_get */ 448 hmp->sroot = hammer2_inode_get(hmp, NULL, NULL, schain); 449 hammer2_inode_ref(hmp->sroot); /* for hmp->sroot */ 450 hammer2_inode_unlock_ex(hmp->sroot); /* eats schain lock */ 451 } else { 452 schain = hmp->schain; 453 } 454 455 /* 456 * schain only has 1 ref now for its hmp->schain assignment. 457 * Setup for lookup (which will lock it). 458 */ 459 parent = hammer2_chain_lookup_init(schain, 0); 460 lhc = hammer2_dirhash(label, strlen(label)); 461 rchain = hammer2_chain_lookup(&parent, 462 lhc, lhc + HAMMER2_DIRHASH_LOMASK, 463 0); 464 while (rchain) { 465 if (rchain->bref.type == HAMMER2_BREF_TYPE_INODE && 466 strcmp(label, rchain->data->ipdata.filename) == 0) { 467 break; 468 } 469 rchain = hammer2_chain_next(&parent, rchain, 470 lhc, lhc + HAMMER2_DIRHASH_LOMASK, 471 0); 472 } 473 hammer2_chain_lookup_done(parent); 474 if (rchain == NULL) { 475 kprintf("hammer2_mount: PFS label not found\n"); 476 hammer2_vfs_unmount(mp, MNT_FORCE); 477 return EINVAL; 478 } 479 if (rchain->flags & HAMMER2_CHAIN_MOUNTED) { 480 hammer2_chain_unlock(rchain); 481 kprintf("hammer2_mount: PFS label already mounted!\n"); 482 hammer2_vfs_unmount(mp, MNT_FORCE); 483 return EBUSY; 484 } 485 atomic_set_int(&rchain->flags, HAMMER2_CHAIN_MOUNTED); 486 487 /* 488 * NOTE: *_get() integrates chain's lock into the inode lock. 489 */ 490 hammer2_chain_ref(rchain); /* for pmp->rchain */ 491 pmp->rchain = rchain; /* left held & unlocked */ 492 pmp->iroot = hammer2_inode_get(hmp, pmp, NULL, rchain); 493 hammer2_inode_ref(pmp->iroot); /* ref for pmp->iroot */ 494 hammer2_inode_unlock_ex(pmp->iroot); /* iroot & its chain */ 495 496 kprintf("iroot %p\n", pmp->iroot); 497 498 /* 499 * Ref the cluster management messaging descriptor. The mount 500 * program deals with the other end of the communications pipe. 501 */ 502 fp = holdfp(curproc->p_fd, info.cluster_fd, -1); 503 if (fp == NULL) { 504 kprintf("hammer2_mount: bad cluster_fd!\n"); 505 hammer2_vfs_unmount(mp, MNT_FORCE); 506 return EBADF; 507 } 508 hammer2_cluster_reconnect(pmp, fp); 509 510 /* 511 * Finish setup 512 */ 513 vfs_getnewfsid(mp); 514 vfs_add_vnodeops(mp, &hammer2_vnode_vops, &mp->mnt_vn_norm_ops); 515 vfs_add_vnodeops(mp, &hammer2_spec_vops, &mp->mnt_vn_spec_ops); 516 vfs_add_vnodeops(mp, &hammer2_fifo_vops, &mp->mnt_vn_fifo_ops); 517 518 copyinstr(info.volume, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size); 519 bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 520 bzero(mp->mnt_stat.f_mntonname, sizeof(mp->mnt_stat.f_mntonname)); 521 copyinstr(path, mp->mnt_stat.f_mntonname, 522 sizeof(mp->mnt_stat.f_mntonname) - 1, 523 &size); 524 525 /* 526 * Initial statfs to prime mnt_stat. 527 */ 528 hammer2_vfs_statfs(mp, &mp->mnt_stat, cred); 529 530 return 0; 531 } 532 533 static 534 int 535 hammer2_remount(struct mount *mp, char *path, struct vnode *devvp, 536 struct ucred *cred) 537 { 538 return (0); 539 } 540 541 static 542 int 543 hammer2_vfs_unmount(struct mount *mp, int mntflags) 544 { 545 hammer2_pfsmount_t *pmp; 546 hammer2_mount_t *hmp; 547 int flags; 548 int error = 0; 549 int ronly = ((mp->mnt_flag & MNT_RDONLY) != 0); 550 int dumpcnt; 551 struct vnode *devvp; 552 553 pmp = MPTOPMP(mp); 554 hmp = pmp->hmp; 555 flags = 0; 556 557 if (mntflags & MNT_FORCE) 558 flags |= FORCECLOSE; 559 560 hammer2_mount_exlock(hmp); 561 562 /* 563 * If mount initialization proceeded far enough we must flush 564 * its vnodes. 565 */ 566 if (pmp->iroot) 567 error = vflush(mp, 0, flags); 568 569 if (error) 570 return error; 571 572 lockmgr(&hammer2_mntlk, LK_EXCLUSIVE); 573 --hmp->pmp_count; 574 kprintf("hammer2_unmount hmp=%p pmpcnt=%d\n", hmp, hmp->pmp_count); 575 576 /* 577 * Flush any left over chains. The voldata lock is only used 578 * to synchronize against HAMMER2_CHAIN_MODIFIED_AUX. 579 */ 580 hammer2_voldata_lock(hmp); 581 if (hmp->vchain.flags & (HAMMER2_CHAIN_MODIFIED | 582 HAMMER2_CHAIN_SUBMODIFIED)) { 583 hammer2_voldata_unlock(hmp, 0); 584 hammer2_vfs_sync(mp, MNT_WAIT); 585 } else { 586 hammer2_voldata_unlock(hmp, 0); 587 } 588 if (hmp->pmp_count == 0) { 589 if (hmp->vchain.flags & (HAMMER2_CHAIN_MODIFIED | 590 HAMMER2_CHAIN_SUBMODIFIED)) { 591 kprintf("hammer2_unmount: chains left over after " 592 "final sync\n"); 593 if (hammer2_debug & 0x0010) 594 Debugger("entered debugger"); 595 } 596 } 597 598 /* 599 * Cleanup the root and super-root chain elements (which should be 600 * clean). 601 */ 602 if (pmp->iroot) { 603 hammer2_inode_lock_ex(pmp->iroot); 604 hammer2_inode_put(pmp->iroot); 605 /* lock destroyed by the put */ 606 #if REPORT_REFS_ERRORS 607 if (pmp->iroot->refs != 1) 608 kprintf("PMP->IROOT %p REFS WRONG %d\n", 609 pmp->iroot, pmp->iroot->refs); 610 #else 611 KKASSERT(pmp->iroot->refs == 1); 612 #endif 613 hammer2_inode_drop(pmp->iroot); /* ref for pmp->iroot */ 614 pmp->iroot = NULL; 615 } 616 if (pmp->rchain) { 617 atomic_clear_int(&pmp->rchain->flags, HAMMER2_CHAIN_MOUNTED); 618 #if REPORT_REFS_ERRORS 619 if (pmp->rchain->refs != 1) 620 kprintf("PMP->RCHAIN %p REFS WRONG %d\n", 621 pmp->rchain, pmp->rchain->refs); 622 #else 623 KKASSERT(pmp->rchain->refs == 1); 624 #endif 625 hammer2_chain_drop(pmp->rchain); 626 pmp->rchain = NULL; 627 } 628 ccms_domain_uninit(&pmp->ccms_dom); 629 630 /* 631 * Kill cluster controller 632 */ 633 kdmsg_iocom_uninit(&pmp->iocom); 634 635 /* 636 * If no PFS's left drop the master hammer2_mount for the device. 637 */ 638 if (hmp->pmp_count == 0) { 639 if (hmp->sroot) { 640 hammer2_inode_drop(hmp->sroot); 641 hmp->sroot = NULL; 642 } 643 if (hmp->schain) { 644 #if REPORT_REFS_ERRORS 645 if (hmp->schain->refs != 1) 646 kprintf("HMP->SCHAIN %p REFS WRONG %d\n", 647 hmp->schain, hmp->schain->refs); 648 #else 649 KKASSERT(hmp->schain->refs == 1); 650 #endif 651 hammer2_chain_drop(hmp->schain); 652 hmp->schain = NULL; 653 } 654 655 /* 656 * Finish up with the device vnode 657 */ 658 if ((devvp = hmp->devvp) != NULL) { 659 vinvalbuf(devvp, (ronly ? 0 : V_SAVE), 0, 0); 660 hmp->devvp = NULL; 661 VOP_CLOSE(devvp, (ronly ? FREAD : FREAD|FWRITE)); 662 vrele(devvp); 663 devvp = NULL; 664 } 665 } 666 hammer2_mount_unlock(hmp); 667 668 dumpcnt = 200; 669 hammer2_dump_chain(&hmp->vchain, 0, &dumpcnt); 670 671 /* 672 * Final drop of embedded volume root chain to clean up 673 * vchain.core (vchain structure is not flagged ALLOCATED 674 * so it is cleaned out and then left). 675 */ 676 hammer2_chain_drop(&hmp->vchain); 677 678 pmp->mp = NULL; 679 pmp->hmp = NULL; 680 mp->mnt_data = NULL; 681 682 kmalloc_destroy(&pmp->mmsg); 683 684 kfree(pmp, M_HAMMER2); 685 if (hmp->pmp_count == 0) { 686 TAILQ_REMOVE(&hammer2_mntlist, hmp, mntentry); 687 kmalloc_destroy(&hmp->minode); 688 kmalloc_destroy(&hmp->mchain); 689 kfree(hmp, M_HAMMER2); 690 } 691 lockmgr(&hammer2_mntlk, LK_RELEASE); 692 return (error); 693 } 694 695 static 696 int 697 hammer2_vfs_vget(struct mount *mp, struct vnode *dvp, 698 ino_t ino, struct vnode **vpp) 699 { 700 kprintf("hammer2_vget\n"); 701 return (EOPNOTSUPP); 702 } 703 704 static 705 int 706 hammer2_vfs_root(struct mount *mp, struct vnode **vpp) 707 { 708 hammer2_pfsmount_t *pmp; 709 hammer2_mount_t *hmp; 710 int error; 711 struct vnode *vp; 712 713 pmp = MPTOPMP(mp); 714 hmp = pmp->hmp; 715 hammer2_mount_exlock(hmp); 716 if (pmp->iroot == NULL) { 717 *vpp = NULL; 718 error = EINVAL; 719 } else { 720 hammer2_inode_lock_sh(pmp->iroot); 721 vp = hammer2_igetv(pmp->iroot, &error); 722 hammer2_inode_unlock_sh(pmp->iroot); 723 *vpp = vp; 724 if (vp == NULL) 725 kprintf("vnodefail\n"); 726 } 727 hammer2_mount_unlock(hmp); 728 729 return (error); 730 } 731 732 /* 733 * Filesystem status 734 * 735 * XXX incorporate ipdata->inode_quota and data_quota 736 */ 737 static 738 int 739 hammer2_vfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred) 740 { 741 hammer2_pfsmount_t *pmp; 742 hammer2_mount_t *hmp; 743 744 pmp = MPTOPMP(mp); 745 hmp = MPTOHMP(mp); 746 747 mp->mnt_stat.f_files = pmp->inode_count; 748 mp->mnt_stat.f_ffree = 0; 749 mp->mnt_stat.f_blocks = hmp->voldata.allocator_size / HAMMER2_PBUFSIZE; 750 mp->mnt_stat.f_bfree = (hmp->voldata.allocator_size - 751 hmp->voldata.allocator_beg) / HAMMER2_PBUFSIZE; 752 mp->mnt_stat.f_bavail = mp->mnt_stat.f_bfree; 753 754 *sbp = mp->mnt_stat; 755 return (0); 756 } 757 758 static 759 int 760 hammer2_vfs_statvfs(struct mount *mp, struct statvfs *sbp, struct ucred *cred) 761 { 762 hammer2_pfsmount_t *pmp; 763 hammer2_mount_t *hmp; 764 765 pmp = MPTOPMP(mp); 766 hmp = MPTOHMP(mp); 767 768 mp->mnt_vstat.f_bsize = HAMMER2_PBUFSIZE; 769 mp->mnt_vstat.f_files = pmp->inode_count; 770 mp->mnt_vstat.f_ffree = 0; 771 mp->mnt_vstat.f_blocks = hmp->voldata.allocator_size / HAMMER2_PBUFSIZE; 772 mp->mnt_vstat.f_bfree = (hmp->voldata.allocator_size - 773 hmp->voldata.allocator_beg) / HAMMER2_PBUFSIZE; 774 mp->mnt_vstat.f_bavail = mp->mnt_vstat.f_bfree; 775 776 *sbp = mp->mnt_vstat; 777 return (0); 778 } 779 780 /* 781 * Sync the entire filesystem; this is called from the filesystem syncer 782 * process periodically and whenever a user calls sync(1) on the hammer 783 * mountpoint. 784 * 785 * Currently is actually called from the syncer! \o/ 786 * 787 * This task will have to snapshot the state of the dirty inode chain. 788 * From that, it will have to make sure all of the inodes on the dirty 789 * chain have IO initiated. We make sure that io is initiated for the root 790 * block. 791 * 792 * If waitfor is set, we wait for media to acknowledge the new rootblock. 793 * 794 * THINKS: side A vs side B, to have sync not stall all I/O? 795 */ 796 static 797 int 798 hammer2_vfs_sync(struct mount *mp, int waitfor) 799 { 800 struct hammer2_sync_info info; 801 hammer2_mount_t *hmp; 802 int flags; 803 int error; 804 int i; 805 #if 0 806 int dumpcnt; 807 #endif 808 809 hmp = MPTOHMP(mp); 810 #if 0 811 if ((waitfor & MNT_LAZY) == 0) { 812 dumpcnt = 50; 813 hammer2_dump_chain(&hmp->vchain, 0, &dumpcnt); 814 } 815 #endif 816 817 flags = VMSC_GETVP; 818 if (waitfor & MNT_LAZY) 819 flags |= VMSC_ONEPASS; 820 821 hammer2_trans_init(hmp, &info.trans, HAMMER2_TRANS_ISFLUSH); 822 info.error = 0; 823 info.waitfor = MNT_NOWAIT; 824 vmntvnodescan(mp, flags | VMSC_NOWAIT, 825 hammer2_sync_scan1, 826 hammer2_sync_scan2, &info); 827 if (info.error == 0 && (waitfor & MNT_WAIT)) { 828 info.waitfor = waitfor; 829 vmntvnodescan(mp, flags, 830 hammer2_sync_scan1, 831 hammer2_sync_scan2, &info); 832 833 } 834 #if 0 835 if (waitfor == MNT_WAIT) { 836 /* XXX */ 837 } else { 838 /* XXX */ 839 } 840 #endif 841 hammer2_chain_lock(&hmp->vchain, HAMMER2_RESOLVE_ALWAYS); 842 if (hmp->vchain.flags & (HAMMER2_CHAIN_MODIFIED | 843 HAMMER2_CHAIN_SUBMODIFIED)) { 844 hammer2_chain_flush(&info.trans, &hmp->vchain); 845 } 846 hammer2_chain_unlock(&hmp->vchain); 847 848 error = 0; 849 850 /* 851 * We can't safely flush the volume header until we have 852 * flushed any device buffers which have built up. 853 */ 854 #if 0 855 if ((waitfor & MNT_LAZY) == 0) { 856 waitfor = MNT_NOWAIT; 857 vn_lock(hmp->devvp, LK_EXCLUSIVE | LK_RETRY); 858 error = VOP_FSYNC(hmp->devvp, waitfor, 0); 859 vn_unlock(hmp->devvp); 860 } 861 #endif 862 vn_lock(hmp->devvp, LK_EXCLUSIVE | LK_RETRY); 863 error = VOP_FSYNC(hmp->devvp, MNT_WAIT, 0); 864 vn_unlock(hmp->devvp); 865 866 /* 867 * The flush code sets CHAIN_VOLUMESYNC to indicate that the 868 * volume header needs synchronization via hmp->volsync. 869 * 870 * XXX synchronize the flag & data with only this flush XXX 871 */ 872 if (error == 0 && (hmp->vchain.flags & HAMMER2_CHAIN_VOLUMESYNC)) { 873 struct buf *bp; 874 875 /* 876 * Synchronize the disk before flushing the volume 877 * header. 878 */ 879 bp = getpbuf(NULL); 880 bp->b_bio1.bio_offset = 0; 881 bp->b_bufsize = 0; 882 bp->b_bcount = 0; 883 bp->b_cmd = BUF_CMD_FLUSH; 884 bp->b_bio1.bio_done = biodone_sync; 885 bp->b_bio1.bio_flags |= BIO_SYNC; 886 vn_strategy(hmp->devvp, &bp->b_bio1); 887 biowait(&bp->b_bio1, "h2vol"); 888 relpbuf(bp, NULL); 889 890 /* 891 * Then we can safely flush the version of the volume header 892 * synchronized by the flush code. 893 */ 894 i = hmp->volhdrno + 1; 895 if (i >= HAMMER2_NUM_VOLHDRS) 896 i = 0; 897 if (i * HAMMER2_ZONE_BYTES64 + HAMMER2_SEGSIZE > 898 hmp->volsync.volu_size) { 899 i = 0; 900 } 901 kprintf("sync volhdr %d %jd\n", 902 i, (intmax_t)hmp->volsync.volu_size); 903 bp = getblk(hmp->devvp, i * HAMMER2_ZONE_BYTES64, 904 HAMMER2_PBUFSIZE, 0, 0); 905 atomic_clear_int(&hmp->vchain.flags, HAMMER2_CHAIN_VOLUMESYNC); 906 bcopy(&hmp->volsync, bp->b_data, HAMMER2_PBUFSIZE); 907 bawrite(bp); 908 hmp->volhdrno = i; 909 } 910 hammer2_trans_done(&info.trans); 911 return (error); 912 } 913 914 /* 915 * Sync passes. 916 * 917 * NOTE: We don't test SUBMODIFIED or MOVED here because the fsync code 918 * won't flush on those flags. The syncer code above will do a 919 * general meta-data flush globally that will catch these flags. 920 */ 921 static int 922 hammer2_sync_scan1(struct mount *mp, struct vnode *vp, void *data) 923 { 924 hammer2_inode_t *ip; 925 926 ip = VTOI(vp); 927 if (vp->v_type == VNON || ip == NULL || 928 ((ip->flags & (HAMMER2_INODE_MODIFIED | 929 HAMMER2_INODE_DIRTYEMBED)) == 0 && 930 RB_EMPTY(&vp->v_rbdirty_tree))) { 931 return(-1); 932 } 933 return(0); 934 } 935 936 static int 937 hammer2_sync_scan2(struct mount *mp, struct vnode *vp, void *data) 938 { 939 struct hammer2_sync_info *info = data; 940 hammer2_inode_t *ip; 941 int error; 942 943 ip = VTOI(vp); 944 if (vp->v_type == VNON || vp->v_type == VBAD || 945 ((ip->flags & (HAMMER2_INODE_MODIFIED | 946 HAMMER2_INODE_DIRTYEMBED)) == 0 && 947 RB_EMPTY(&vp->v_rbdirty_tree))) { 948 return(0); 949 } 950 951 /* 952 * VOP_FSYNC will start a new transaction so replicate some code 953 * here to do it inline (see hammer2_vop_fsync()). 954 */ 955 hammer2_inode_lock_ex(ip); 956 if (ip->vp) 957 vfsync(ip->vp, MNT_NOWAIT, 1, NULL, NULL); 958 if (ip->flags & HAMMER2_INODE_DIRTYEMBED) { 959 atomic_clear_int(&ip->flags, HAMMER2_INODE_DIRTYEMBED); 960 atomic_set_int(&ip->flags, HAMMER2_INODE_MODIFIED); 961 hammer2_chain_modify_ip(&info->trans, ip, 0); 962 /* ip->chain may have changed */ 963 } 964 hammer2_chain_flush(&info->trans, ip->chain); 965 hammer2_inode_unlock_ex(ip); 966 error = 0; 967 #if 0 968 error = VOP_FSYNC(vp, MNT_NOWAIT, 0); 969 #endif 970 if (error) 971 info->error = error; 972 return(0); 973 } 974 975 static 976 int 977 hammer2_vfs_vptofh(struct vnode *vp, struct fid *fhp) 978 { 979 return (0); 980 } 981 982 static 983 int 984 hammer2_vfs_fhtovp(struct mount *mp, struct vnode *rootvp, 985 struct fid *fhp, struct vnode **vpp) 986 { 987 return (0); 988 } 989 990 static 991 int 992 hammer2_vfs_checkexp(struct mount *mp, struct sockaddr *nam, 993 int *exflagsp, struct ucred **credanonp) 994 { 995 return (0); 996 } 997 998 /* 999 * Support code for hammer2_mount(). Read, verify, and install the volume 1000 * header into the HMP 1001 * 1002 * XXX read four volhdrs and use the one with the highest TID whos CRC 1003 * matches. 1004 * 1005 * XXX check iCRCs. 1006 * 1007 * XXX For filesystems w/ less than 4 volhdrs, make sure to not write to 1008 * nonexistant locations. 1009 * 1010 * XXX Record selected volhdr and ring updates to each of 4 volhdrs 1011 */ 1012 static 1013 int 1014 hammer2_install_volume_header(hammer2_mount_t *hmp) 1015 { 1016 hammer2_volume_data_t *vd; 1017 struct buf *bp; 1018 hammer2_crc32_t crc0, crc, bcrc0, bcrc; 1019 int error_reported; 1020 int error; 1021 int valid; 1022 int i; 1023 1024 error_reported = 0; 1025 error = 0; 1026 valid = 0; 1027 bp = NULL; 1028 1029 /* 1030 * There are up to 4 copies of the volume header (syncs iterate 1031 * between them so there is no single master). We don't trust the 1032 * volu_size field so we don't know precisely how large the filesystem 1033 * is, so depend on the OS to return an error if we go beyond the 1034 * block device's EOF. 1035 */ 1036 for (i = 0; i < HAMMER2_NUM_VOLHDRS; i++) { 1037 error = bread(hmp->devvp, i * HAMMER2_ZONE_BYTES64, 1038 HAMMER2_VOLUME_BYTES, &bp); 1039 if (error) { 1040 brelse(bp); 1041 bp = NULL; 1042 continue; 1043 } 1044 1045 vd = (struct hammer2_volume_data *) bp->b_data; 1046 if ((vd->magic != HAMMER2_VOLUME_ID_HBO) && 1047 (vd->magic != HAMMER2_VOLUME_ID_ABO)) { 1048 brelse(bp); 1049 bp = NULL; 1050 continue; 1051 } 1052 1053 if (vd->magic == HAMMER2_VOLUME_ID_ABO) { 1054 /* XXX: Reversed-endianness filesystem */ 1055 kprintf("hammer2: reverse-endian filesystem detected"); 1056 brelse(bp); 1057 bp = NULL; 1058 continue; 1059 } 1060 1061 crc = vd->icrc_sects[HAMMER2_VOL_ICRC_SECT0]; 1062 crc0 = hammer2_icrc32(bp->b_data + HAMMER2_VOLUME_ICRC0_OFF, 1063 HAMMER2_VOLUME_ICRC0_SIZE); 1064 bcrc = vd->icrc_sects[HAMMER2_VOL_ICRC_SECT1]; 1065 bcrc0 = hammer2_icrc32(bp->b_data + HAMMER2_VOLUME_ICRC1_OFF, 1066 HAMMER2_VOLUME_ICRC1_SIZE); 1067 if ((crc0 != crc) || (bcrc0 != bcrc)) { 1068 kprintf("hammer2 volume header crc " 1069 "mismatch copy #%d %08x/%08x\n", 1070 i, crc0, crc); 1071 error_reported = 1; 1072 brelse(bp); 1073 bp = NULL; 1074 continue; 1075 } 1076 if (valid == 0 || hmp->voldata.mirror_tid < vd->mirror_tid) { 1077 valid = 1; 1078 hmp->voldata = *vd; 1079 hmp->volhdrno = i; 1080 } 1081 brelse(bp); 1082 bp = NULL; 1083 } 1084 if (valid) { 1085 hmp->volsync = hmp->voldata; 1086 error = 0; 1087 if (error_reported || bootverbose || 1) { /* 1/DEBUG */ 1088 kprintf("hammer2: using volume header #%d\n", 1089 hmp->volhdrno); 1090 } 1091 } else { 1092 error = EINVAL; 1093 kprintf("hammer2: no valid volume headers found!\n"); 1094 } 1095 return (error); 1096 } 1097 1098 /* 1099 * Reconnect using the passed file pointer. The caller must ref the 1100 * fp for us. 1101 */ 1102 void 1103 hammer2_cluster_reconnect(hammer2_pfsmount_t *pmp, struct file *fp) 1104 { 1105 hammer2_inode_data_t *ipdata; 1106 size_t name_len; 1107 1108 /* 1109 * Closes old comm descriptor, kills threads, cleans up 1110 * states, then installs the new descriptor and creates 1111 * new threads. 1112 */ 1113 kdmsg_iocom_reconnect(&pmp->iocom, fp, "hammer2"); 1114 1115 /* 1116 * Setup LNK_CONN fields for autoinitiated state machine 1117 */ 1118 hammer2_inode_lock_ex(pmp->iroot); 1119 ipdata = &pmp->iroot->chain->data->ipdata; 1120 pmp->iocom.auto_lnk_conn.pfs_clid = ipdata->pfs_clid; 1121 pmp->iocom.auto_lnk_conn.pfs_fsid = ipdata->pfs_fsid; 1122 pmp->iocom.auto_lnk_conn.pfs_type = ipdata->pfs_type; 1123 pmp->iocom.auto_lnk_conn.proto_version = DMSG_SPAN_PROTO_1; 1124 pmp->iocom.auto_lnk_conn.peer_type = pmp->hmp->voldata.peer_type; 1125 hammer2_inode_unlock_ex(pmp->iroot); 1126 1127 /* 1128 * Filter adjustment. Clients do not need visibility into other 1129 * clients (otherwise millions of clients would present a serious 1130 * problem). The fs_label also serves to restrict the namespace. 1131 */ 1132 pmp->iocom.auto_lnk_conn.peer_mask = 1LLU << HAMMER2_PEER_HAMMER2; 1133 pmp->iocom.auto_lnk_conn.pfs_mask = (uint64_t)-1; 1134 switch (ipdata->pfs_type) { 1135 case DMSG_PFSTYPE_CLIENT: 1136 pmp->iocom.auto_lnk_conn.peer_mask &= 1137 ~(1LLU << DMSG_PFSTYPE_CLIENT); 1138 break; 1139 default: 1140 break; 1141 } 1142 1143 name_len = ipdata->name_len; 1144 if (name_len >= sizeof(pmp->iocom.auto_lnk_conn.fs_label)) 1145 name_len = sizeof(pmp->iocom.auto_lnk_conn.fs_label) - 1; 1146 bcopy(ipdata->filename, 1147 pmp->iocom.auto_lnk_conn.fs_label, 1148 name_len); 1149 pmp->iocom.auto_lnk_conn.fs_label[name_len] = 0; 1150 1151 /* 1152 * Setup LNK_SPAN fields for autoinitiated state machine 1153 */ 1154 pmp->iocom.auto_lnk_span.pfs_clid = ipdata->pfs_clid; 1155 pmp->iocom.auto_lnk_span.pfs_fsid = ipdata->pfs_fsid; 1156 pmp->iocom.auto_lnk_span.pfs_type = ipdata->pfs_type; 1157 pmp->iocom.auto_lnk_span.peer_type = pmp->hmp->voldata.peer_type; 1158 pmp->iocom.auto_lnk_span.proto_version = DMSG_SPAN_PROTO_1; 1159 name_len = ipdata->name_len; 1160 if (name_len >= sizeof(pmp->iocom.auto_lnk_span.fs_label)) 1161 name_len = sizeof(pmp->iocom.auto_lnk_span.fs_label) - 1; 1162 bcopy(ipdata->filename, 1163 pmp->iocom.auto_lnk_span.fs_label, 1164 name_len); 1165 pmp->iocom.auto_lnk_span.fs_label[name_len] = 0; 1166 1167 kdmsg_iocom_autoinitiate(&pmp->iocom, hammer2_autodmsg); 1168 } 1169 1170 static int 1171 hammer2_rcvdmsg(kdmsg_msg_t *msg) 1172 { 1173 switch(msg->any.head.cmd & DMSGF_TRANSMASK) { 1174 case DMSG_DBG_SHELL: 1175 /* 1176 * (non-transaction) 1177 * Execute shell command (not supported atm) 1178 */ 1179 kdmsg_msg_reply(msg, DMSG_ERR_NOSUPP); 1180 break; 1181 case DMSG_DBG_SHELL | DMSGF_REPLY: 1182 /* 1183 * (non-transaction) 1184 */ 1185 if (msg->aux_data) { 1186 msg->aux_data[msg->aux_size - 1] = 0; 1187 kprintf("HAMMER2 DBG: %s\n", msg->aux_data); 1188 } 1189 break; 1190 default: 1191 /* 1192 * Unsupported message received. We only need to 1193 * reply if it's a transaction in order to close our end. 1194 * Ignore any one-way messages are any further messages 1195 * associated with the transaction. 1196 * 1197 * NOTE: This case also includes DMSG_LNK_ERROR messages 1198 * which might be one-way, replying to those would 1199 * cause an infinite ping-pong. 1200 */ 1201 if (msg->any.head.cmd & DMSGF_CREATE) 1202 kdmsg_msg_reply(msg, DMSG_ERR_NOSUPP); 1203 break; 1204 } 1205 return(0); 1206 } 1207 1208 /* 1209 * This function is called after KDMSG has automatically handled processing 1210 * of a LNK layer message (typically CONN, SPAN, or CIRC). 1211 * 1212 * We tag off the LNK_CONN to trigger our LNK_VOLCONF messages which 1213 * advertises all available hammer2 super-root volumes. 1214 */ 1215 static void 1216 hammer2_autodmsg(kdmsg_msg_t *msg) 1217 { 1218 hammer2_pfsmount_t *pmp = msg->iocom->handle; 1219 hammer2_mount_t *hmp = pmp->hmp; 1220 int copyid; 1221 1222 /* 1223 * We only care about replies to our LNK_CONN auto-request. kdmsg 1224 * has already processed the reply, we use this calback as a shim 1225 * to know when we can advertise available super-root volumes. 1226 */ 1227 if ((msg->any.head.cmd & DMSGF_TRANSMASK) != 1228 (DMSG_LNK_CONN | DMSGF_CREATE | DMSGF_REPLY) || 1229 msg->state == NULL) { 1230 return; 1231 } 1232 1233 kprintf("LNK_CONN REPLY RECEIVED CMD %08x\n", msg->any.head.cmd); 1234 1235 if (msg->any.head.cmd & DMSGF_CREATE) { 1236 kprintf("HAMMER2: VOLDATA DUMP\n"); 1237 1238 /* 1239 * Dump the configuration stored in the volume header 1240 */ 1241 hammer2_voldata_lock(hmp); 1242 for (copyid = 0; copyid < HAMMER2_COPYID_COUNT; ++copyid) { 1243 if (hmp->voldata.copyinfo[copyid].copyid == 0) 1244 continue; 1245 hammer2_volconf_update(pmp, copyid); 1246 } 1247 hammer2_voldata_unlock(hmp, 0); 1248 } 1249 if ((msg->any.head.cmd & DMSGF_DELETE) && 1250 msg->state && (msg->state->txcmd & DMSGF_DELETE) == 0) { 1251 kprintf("HAMMER2: CONN WAS TERMINATED\n"); 1252 } 1253 } 1254 1255 /* 1256 * Volume configuration updates are passed onto the userland service 1257 * daemon via the open LNK_CONN transaction. 1258 */ 1259 void 1260 hammer2_volconf_update(hammer2_pfsmount_t *pmp, int index) 1261 { 1262 hammer2_mount_t *hmp = pmp->hmp; 1263 kdmsg_msg_t *msg; 1264 1265 /* XXX interlock against connection state termination */ 1266 kprintf("volconf update %p\n", pmp->iocom.conn_state); 1267 if (pmp->iocom.conn_state) { 1268 kprintf("TRANSMIT VOLCONF VIA OPEN CONN TRANSACTION\n"); 1269 msg = kdmsg_msg_alloc_state(pmp->iocom.conn_state, 1270 DMSG_LNK_VOLCONF, NULL, NULL); 1271 msg->any.lnk_volconf.copy = hmp->voldata.copyinfo[index]; 1272 msg->any.lnk_volconf.mediaid = hmp->voldata.fsid; 1273 msg->any.lnk_volconf.index = index; 1274 kdmsg_msg_write(msg); 1275 } 1276 } 1277 1278 void 1279 hammer2_dump_chain(hammer2_chain_t *chain, int tab, int *countp) 1280 { 1281 hammer2_chain_t *scan; 1282 1283 --*countp; 1284 if (*countp == 0) { 1285 kprintf("%*.*s...\n", tab, tab, ""); 1286 return; 1287 } 1288 if (*countp < 0) 1289 return; 1290 kprintf("%*.*schain[%d] %p.%d [%08x][core=%p] (%s) dl=%p refs=%d", 1291 tab, tab, "", 1292 chain->index, chain, chain->bref.type, chain->flags, 1293 chain->core, 1294 ((chain->bref.type == HAMMER2_BREF_TYPE_INODE && 1295 chain->data) ? (char *)chain->data->ipdata.filename : "?"), 1296 chain->duplink, chain->refs); 1297 if (chain->core == NULL || RB_EMPTY(&chain->core->rbtree)) 1298 kprintf("\n"); 1299 else 1300 kprintf(" {\n"); 1301 RB_FOREACH(scan, hammer2_chain_tree, &chain->core->rbtree) { 1302 hammer2_dump_chain(scan, tab + 4, countp); 1303 } 1304 if (chain->core && !RB_EMPTY(&chain->core->rbtree)) { 1305 if (chain->bref.type == HAMMER2_BREF_TYPE_INODE && chain->data) 1306 kprintf("%*.*s}(%s)\n", tab, tab, "", 1307 chain->data->ipdata.filename); 1308 else 1309 kprintf("%*.*s}\n", tab, tab, ""); 1310 } 1311 } 1312