1 /* 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2022 Tomohiro Kusumi <tkusumi@netbsd.org> 5 * Copyright (c) 2011-2022 The DragonFly Project. All rights reserved. 6 * 7 * This code is derived from software contributed to The DragonFly Project 8 * by Matthew Dillon <dillon@dragonflybsd.org> 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 3. Neither the name of The DragonFly Project nor the names of its 21 * contributors may be used to endorse or promote products derived 22 * from this software without specific, prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 27 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 28 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 29 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 30 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 31 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 32 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 34 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 /* 38 * Kernel Filesystem interface 39 * 40 * NOTE! local ipdata pointers must be reloaded on any modifying operation 41 * to the inode as its underlying chain may have changed. 42 */ 43 44 /* 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/fcntl.h> 49 #include <sys/buf.h> 50 #include <sys/proc.h> 51 #include <sys/mount.h> 52 #include <sys/vnode.h> 53 #include <sys/mountctl.h> 54 #include <sys/dirent.h> 55 #include <sys/uio.h> 56 #include <sys/objcache.h> 57 #include <sys/event.h> 58 #include <sys/file.h> 59 #include <vfs/fifofs/fifo.h> 60 */ 61 62 #include "hammer2.h" 63 64 /* 65 static int hammer2_read_file(hammer2_inode_t *ip, struct uio *uio, 66 int seqcount); 67 */ 68 static int hammer2_write_file(hammer2_inode_t *ip, struct uio *uio, 69 int ioflag, int seqcount); 70 static void hammer2_extend_file(hammer2_inode_t *ip, hammer2_key_t nsize); 71 static void hammer2_truncate_file(hammer2_inode_t *ip, hammer2_key_t nsize); 72 73 /* 74 * Last reference to a vnode is going away but it is still cached. 75 */ 76 static 77 int 78 hammer2_vop_inactive(struct vop_inactive_args *ap) 79 { 80 #if 0 81 hammer2_inode_t *ip; 82 struct vnode *vp; 83 84 vp = ap->a_vp; 85 ip = VTOI(vp); 86 87 /* 88 * Degenerate case 89 */ 90 if (ip == NULL) { 91 vrecycle(vp); 92 return (0); 93 } 94 95 /* 96 * Aquire the inode lock to interlock against vp updates via 97 * the inode path and file deletions and such (which can be 98 * namespace-only operations that might not hold the vnode). 99 */ 100 hammer2_inode_lock(ip, 0); 101 if (ip->flags & HAMMER2_INODE_ISUNLINKED) { 102 hammer2_key_t lbase; 103 int nblksize; 104 105 /* 106 * If the inode has been unlinked we can throw away all 107 * buffers (dirty or not) and clean the file out. 108 * 109 * Because vrecycle() calls are not guaranteed, try to 110 * dispose of the inode as much as possible right here. 111 */ 112 nblksize = hammer2_calc_logical(ip, 0, &lbase, NULL); 113 nvtruncbuf(vp, 0, nblksize, 0, 0); 114 115 /* 116 * Delete the file on-media. 117 */ 118 if ((ip->flags & HAMMER2_INODE_DELETING) == 0) { 119 atomic_set_int(&ip->flags, HAMMER2_INODE_DELETING); 120 hammer2_inode_delayed_sideq(ip); 121 } 122 hammer2_inode_unlock(ip); 123 124 /* 125 * Recycle immediately if possible 126 */ 127 vrecycle(vp); 128 } else { 129 hammer2_inode_unlock(ip); 130 } 131 return (0); 132 #endif 133 return (EOPNOTSUPP); 134 } 135 136 /* 137 * Reclaim a vnode so that it can be reused; after the inode is 138 * disassociated, the filesystem must manage it alone. 139 */ 140 static 141 int 142 hammer2_vop_reclaim(struct vop_reclaim_args *ap) 143 { 144 hammer2_inode_t *ip; 145 hammer2_pfs_t *pmp; 146 struct vnode *vp; 147 148 vp = ap->a_vp; 149 ip = VTOI(vp); 150 if (ip == NULL) 151 return(0); 152 153 pmp = ip->pmp; 154 155 /* 156 * NOTE! We do not attempt to flush chains here, flushing is 157 * really fragile and could also deadlock. 158 */ 159 vclrisdirty(vp); 160 161 /* 162 * The inode lock is required to disconnect it. 163 */ 164 hammer2_inode_lock(ip, 0); 165 vp->v_data = NULL; 166 ip->vp = NULL; 167 168 /* 169 * Delete the file on-media. This should have been handled by the 170 * inactivation. The operation is likely still queued on the inode 171 * though so only complain if the stars don't align. 172 */ 173 if ((ip->flags & (HAMMER2_INODE_ISUNLINKED | HAMMER2_INODE_DELETING)) == 174 HAMMER2_INODE_ISUNLINKED) 175 { 176 assert(0); 177 atomic_set_int(&ip->flags, HAMMER2_INODE_DELETING); 178 hammer2_inode_delayed_sideq(ip); 179 kprintf("hammer2: vp=%p ip=%p unlinked but not disposed\n", 180 vp, ip); 181 } 182 hammer2_inode_unlock(ip); 183 184 /* 185 * Modified inodes will already be on SIDEQ or SYNCQ, no further 186 * action is needed. 187 * 188 * We cannot safely synchronize the inode from inside the reclaim 189 * due to potentially deep locks held as-of when the reclaim occurs. 190 * Interactions and potential deadlocks abound. We also can't do it 191 * here without desynchronizing from the related directory entrie(s). 192 */ 193 hammer2_inode_drop(ip); /* vp ref */ 194 195 /* 196 * XXX handle background sync when ip dirty, kernel will no longer 197 * notify us regarding this inode because there is no longer a 198 * vnode attached to it. 199 */ 200 201 return (0); 202 } 203 204 int 205 hammer2_reclaim(struct vnode *vp) 206 { 207 struct vop_reclaim_args ap = { 208 .a_vp = vp, 209 }; 210 211 return hammer2_vop_reclaim(&ap); 212 } 213 214 /* 215 * Currently this function synchronizes the front-end inode state to the 216 * backend chain topology, then flushes the inode's chain and sub-topology 217 * to backend media. This function does not flush the root topology down to 218 * the inode. 219 */ 220 static 221 int 222 hammer2_vop_fsync(struct vop_fsync_args *ap) 223 { 224 #if 0 225 hammer2_inode_t *ip; 226 struct vnode *vp; 227 int error1; 228 int error2; 229 230 vp = ap->a_vp; 231 ip = VTOI(vp); 232 error1 = 0; 233 234 hammer2_trans_init(ip->pmp, 0); 235 236 /* 237 * Flush dirty buffers in the file's logical buffer cache. 238 * It is best to wait for the strategy code to commit the 239 * buffers to the device's backing buffer cache before 240 * then trying to flush the inode. 241 * 242 * This should be quick, but certain inode modifications cached 243 * entirely in the hammer2_inode structure may not trigger a 244 * buffer read until the flush so the fsync can wind up also 245 * doing scattered reads. 246 */ 247 vfsync(vp, ap->a_waitfor, 1, NULL, NULL); 248 bio_track_wait(&vp->v_track_write, 0, 0); 249 250 /* 251 * Flush any inode changes 252 */ 253 hammer2_inode_lock(ip, 0); 254 if (ip->flags & (HAMMER2_INODE_RESIZED|HAMMER2_INODE_MODIFIED)) 255 error1 = hammer2_inode_chain_sync(ip); 256 257 /* 258 * Flush dirty chains related to the inode. 259 * 260 * NOTE! We are not in a flush transaction. The inode remains on 261 * the sideq so the filesystem syncer can synchronize it to 262 * the volume root. 263 */ 264 error2 = hammer2_inode_chain_flush(ip, HAMMER2_XOP_INODE_STOP); 265 if (error2) 266 error1 = error2; 267 268 /* 269 * We may be able to clear the vnode dirty flag. The 270 * hammer2_pfs_moderate() code depends on this usually working. 271 */ 272 if ((ip->flags & (HAMMER2_INODE_MODIFIED | 273 HAMMER2_INODE_RESIZED | 274 HAMMER2_INODE_DIRTYDATA)) == 0 && 275 RB_EMPTY(&vp->v_rbdirty_tree) && 276 !bio_track_active(&vp->v_track_write)) { 277 vclrisdirty(vp); 278 } 279 hammer2_inode_unlock(ip); 280 hammer2_trans_done(ip->pmp, 0); 281 282 return (error1); 283 #endif 284 return (EOPNOTSUPP); 285 } 286 287 /* 288 * No lock needed, just handle ip->update 289 */ 290 static 291 int 292 hammer2_vop_access(struct vop_access_args *ap) 293 { 294 #if 0 295 hammer2_inode_t *ip = VTOI(ap->a_vp); 296 uid_t uid; 297 gid_t gid; 298 mode_t mode; 299 uint32_t uflags; 300 int error; 301 int update; 302 303 retry: 304 update = spin_access_start(&ip->cluster_spin); 305 306 /*hammer2_inode_lock(ip, HAMMER2_RESOLVE_SHARED);*/ 307 uid = hammer2_to_unix_xid(&ip->meta.uid); 308 gid = hammer2_to_unix_xid(&ip->meta.gid); 309 mode = ip->meta.mode; 310 uflags = ip->meta.uflags; 311 /*hammer2_inode_unlock(ip);*/ 312 313 if (__predict_false(spin_access_end(&ip->cluster_spin, update))) 314 goto retry; 315 316 error = vop_helper_access(ap, uid, gid, mode, uflags); 317 318 return (error); 319 #endif 320 return (EOPNOTSUPP); 321 } 322 323 static 324 int 325 hammer2_vop_getattr(struct vop_getattr_args *ap) 326 { 327 #if 0 328 hammer2_pfs_t *pmp; 329 hammer2_inode_t *ip; 330 struct vnode *vp; 331 struct vattr *vap; 332 int update; 333 334 vp = ap->a_vp; 335 vap = ap->a_vap; 336 337 ip = VTOI(vp); 338 pmp = ip->pmp; 339 340 retry: 341 update = spin_access_start(&ip->cluster_spin); 342 343 vap->va_fsid = pmp->mp->mnt_stat.f_fsid.val[0]; 344 vap->va_fileid = ip->meta.inum; 345 vap->va_mode = ip->meta.mode; 346 vap->va_nlink = ip->meta.nlinks; 347 vap->va_uid = hammer2_to_unix_xid(&ip->meta.uid); 348 vap->va_gid = hammer2_to_unix_xid(&ip->meta.gid); 349 vap->va_rmajor = 0; 350 vap->va_rminor = 0; 351 vap->va_size = ip->meta.size; /* protected by shared lock */ 352 vap->va_blocksize = HAMMER2_PBUFSIZE; 353 vap->va_flags = ip->meta.uflags; 354 hammer2_time_to_timespec(ip->meta.ctime, &vap->va_ctime); 355 hammer2_time_to_timespec(ip->meta.mtime, &vap->va_mtime); 356 hammer2_time_to_timespec(ip->meta.mtime, &vap->va_atime); 357 vap->va_gen = 1; 358 vap->va_bytes = 0; 359 if (ip->meta.type == HAMMER2_OBJTYPE_DIRECTORY) { 360 /* 361 * Can't really calculate directory use sans the files under 362 * it, just assume one block for now. 363 */ 364 vap->va_bytes += HAMMER2_INODE_BYTES; 365 } else { 366 vap->va_bytes = hammer2_inode_data_count(ip); 367 } 368 vap->va_type = hammer2_get_vtype(ip->meta.type); 369 vap->va_filerev = 0; 370 vap->va_uid_uuid = ip->meta.uid; 371 vap->va_gid_uuid = ip->meta.gid; 372 vap->va_vaflags = VA_UID_UUID_VALID | VA_GID_UUID_VALID | 373 VA_FSID_UUID_VALID; 374 375 if (__predict_false(spin_access_end(&ip->cluster_spin, update))) 376 goto retry; 377 378 return (0); 379 #endif 380 return (EOPNOTSUPP); 381 } 382 383 static 384 int 385 hammer2_vop_getattr_lite(struct vop_getattr_lite_args *ap) 386 { 387 #if 0 388 hammer2_pfs_t *pmp; 389 hammer2_inode_t *ip; 390 struct vnode *vp; 391 struct vattr_lite *lvap; 392 int update; 393 394 vp = ap->a_vp; 395 lvap = ap->a_lvap; 396 397 ip = VTOI(vp); 398 pmp = ip->pmp; 399 400 retry: 401 update = spin_access_start(&ip->cluster_spin); 402 403 #if 0 404 vap->va_fsid = pmp->mp->mnt_stat.f_fsid.val[0]; 405 vap->va_fileid = ip->meta.inum; 406 #endif 407 lvap->va_mode = ip->meta.mode; 408 lvap->va_nlink = ip->meta.nlinks; 409 lvap->va_uid = hammer2_to_unix_xid(&ip->meta.uid); 410 lvap->va_gid = hammer2_to_unix_xid(&ip->meta.gid); 411 #if 0 412 vap->va_rmajor = 0; 413 vap->va_rminor = 0; 414 #endif 415 lvap->va_size = ip->meta.size; 416 #if 0 417 vap->va_blocksize = HAMMER2_PBUFSIZE; 418 #endif 419 lvap->va_flags = ip->meta.uflags; 420 lvap->va_type = hammer2_get_vtype(ip->meta.type); 421 #if 0 422 vap->va_filerev = 0; 423 vap->va_uid_uuid = ip->meta.uid; 424 vap->va_gid_uuid = ip->meta.gid; 425 vap->va_vaflags = VA_UID_UUID_VALID | VA_GID_UUID_VALID | 426 VA_FSID_UUID_VALID; 427 #endif 428 429 if (__predict_false(spin_access_end(&ip->cluster_spin, update))) 430 goto retry; 431 432 return (0); 433 #endif 434 return (EOPNOTSUPP); 435 } 436 437 static 438 int 439 hammer2_vop_setattr(struct vop_setattr_args *ap) 440 { 441 #if 0 442 hammer2_inode_t *ip; 443 struct vnode *vp; 444 struct vattr *vap; 445 int error; 446 int kflags = 0; 447 uint64_t ctime; 448 449 vp = ap->a_vp; 450 vap = ap->a_vap; 451 hammer2_update_time(&ctime); 452 453 ip = VTOI(vp); 454 455 if (ip->pmp->ronly) 456 return (EROFS); 457 458 /* 459 * Normally disallow setattr if there is no space, unless we 460 * are in emergency mode (might be needed to chflags -R noschg 461 * files prior to removal). 462 */ 463 if ((ip->pmp->flags & HAMMER2_PMPF_EMERG) == 0 && 464 hammer2_vfs_enospace(ip, 0, ap->a_cred) > 1) { 465 return (ENOSPC); 466 } 467 468 hammer2_trans_init(ip->pmp, 0); 469 hammer2_inode_lock(ip, 0); 470 error = 0; 471 472 if (vap->va_flags != VNOVAL) { 473 uint32_t flags; 474 475 flags = ip->meta.uflags; 476 error = vop_helper_setattr_flags(&flags, vap->va_flags, 477 hammer2_to_unix_xid(&ip->meta.uid), 478 ap->a_cred); 479 if (error == 0) { 480 if (ip->meta.uflags != flags) { 481 hammer2_inode_modify(ip); 482 hammer2_spin_lock_update(&ip->cluster_spin); 483 ip->meta.uflags = flags; 484 ip->meta.ctime = ctime; 485 hammer2_spin_unlock_update(&ip->cluster_spin); 486 kflags |= NOTE_ATTRIB; 487 } 488 if (ip->meta.uflags & (IMMUTABLE | APPEND)) { 489 error = 0; 490 goto done; 491 } 492 } 493 goto done; 494 } 495 if (ip->meta.uflags & (IMMUTABLE | APPEND)) { 496 error = EPERM; 497 goto done; 498 } 499 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) { 500 mode_t cur_mode = ip->meta.mode; 501 uid_t cur_uid = hammer2_to_unix_xid(&ip->meta.uid); 502 gid_t cur_gid = hammer2_to_unix_xid(&ip->meta.gid); 503 uuid_t uuid_uid; 504 uuid_t uuid_gid; 505 506 error = vop_helper_chown(ap->a_vp, vap->va_uid, vap->va_gid, 507 ap->a_cred, 508 &cur_uid, &cur_gid, &cur_mode); 509 if (error == 0) { 510 hammer2_guid_to_uuid(&uuid_uid, cur_uid); 511 hammer2_guid_to_uuid(&uuid_gid, cur_gid); 512 if (bcmp(&uuid_uid, &ip->meta.uid, sizeof(uuid_uid)) || 513 bcmp(&uuid_gid, &ip->meta.gid, sizeof(uuid_gid)) || 514 ip->meta.mode != cur_mode 515 ) { 516 hammer2_inode_modify(ip); 517 hammer2_spin_lock_update(&ip->cluster_spin); 518 ip->meta.uid = uuid_uid; 519 ip->meta.gid = uuid_gid; 520 ip->meta.mode = cur_mode; 521 ip->meta.ctime = ctime; 522 hammer2_spin_unlock_update(&ip->cluster_spin); 523 } 524 kflags |= NOTE_ATTRIB; 525 } 526 } 527 528 /* 529 * Resize the file 530 */ 531 if (vap->va_size != VNOVAL && ip->meta.size != vap->va_size) { 532 switch(vp->v_type) { 533 case VREG: 534 if (vap->va_size == ip->meta.size) 535 break; 536 if (vap->va_size < ip->meta.size) { 537 hammer2_mtx_ex(&ip->truncate_lock); 538 hammer2_truncate_file(ip, vap->va_size); 539 hammer2_mtx_unlock(&ip->truncate_lock); 540 kflags |= NOTE_WRITE; 541 } else { 542 hammer2_extend_file(ip, vap->va_size); 543 kflags |= NOTE_WRITE | NOTE_EXTEND; 544 } 545 hammer2_inode_modify(ip); 546 ip->meta.mtime = ctime; 547 vclrflags(vp, VLASTWRITETS); 548 break; 549 default: 550 error = EINVAL; 551 goto done; 552 } 553 } 554 #if 0 555 /* atime not supported */ 556 if (vap->va_atime.tv_sec != VNOVAL) { 557 hammer2_inode_modify(ip); 558 ip->meta.atime = hammer2_timespec_to_time(&vap->va_atime); 559 kflags |= NOTE_ATTRIB; 560 } 561 #endif 562 if (vap->va_mode != (mode_t)VNOVAL) { 563 mode_t cur_mode = ip->meta.mode; 564 uid_t cur_uid = hammer2_to_unix_xid(&ip->meta.uid); 565 gid_t cur_gid = hammer2_to_unix_xid(&ip->meta.gid); 566 567 error = vop_helper_chmod(ap->a_vp, vap->va_mode, ap->a_cred, 568 cur_uid, cur_gid, &cur_mode); 569 if (error == 0) { 570 hammer2_inode_modify(ip); 571 hammer2_spin_lock_update(&ip->cluster_spin); 572 ip->meta.mode = cur_mode; 573 ip->meta.ctime = ctime; 574 hammer2_spin_unlock_update(&ip->cluster_spin); 575 kflags |= NOTE_ATTRIB; 576 } 577 } 578 579 if (vap->va_mtime.tv_sec != VNOVAL) { 580 hammer2_inode_modify(ip); 581 ip->meta.mtime = hammer2_timespec_to_time(&vap->va_mtime); 582 kflags |= NOTE_ATTRIB; 583 vclrflags(vp, VLASTWRITETS); 584 } 585 586 done: 587 /* 588 * If a truncation occurred we must call chain_sync() now in order 589 * to trim the related data chains, otherwise a later expansion can 590 * cause havoc. 591 * 592 * If an extend occured that changed the DIRECTDATA state, we must 593 * call inode_chain_sync now in order to prepare the inode's indirect 594 * block table. 595 * 596 * WARNING! This means we are making an adjustment to the inode's 597 * chain outside of sync/fsync, and not just to inode->meta, which 598 * may result in some consistency issues if a crash were to occur 599 * at just the wrong time. 600 */ 601 if (ip->flags & HAMMER2_INODE_RESIZED) 602 hammer2_inode_chain_sync(ip); 603 604 /* 605 * Cleanup. 606 */ 607 hammer2_inode_unlock(ip); 608 hammer2_trans_done(ip->pmp, HAMMER2_TRANS_SIDEQ); 609 hammer2_knote(ip->vp, kflags); 610 611 return (error); 612 #endif 613 return (EOPNOTSUPP); 614 } 615 616 static 617 int 618 hammer2_vop_readdir(struct vop_readdir_args *ap) 619 { 620 #if 0 621 hammer2_xop_readdir_t *xop; 622 hammer2_blockref_t bref; 623 hammer2_inode_t *ip; 624 hammer2_tid_t inum; 625 hammer2_key_t lkey; 626 struct uio *uio; 627 off_t *cookies; 628 off_t saveoff; 629 int cookie_index; 630 int ncookies; 631 int error; 632 int eofflag; 633 int r; 634 635 ip = VTOI(ap->a_vp); 636 uio = ap->a_uio; 637 saveoff = uio->uio_offset; 638 eofflag = 0; 639 error = 0; 640 641 /* 642 * Setup cookies directory entry cookies if requested 643 */ 644 if (ap->a_ncookies) { 645 ncookies = uio->uio_resid / 16 + 1; 646 if (ncookies > 1024) 647 ncookies = 1024; 648 cookies = kmalloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 649 } else { 650 ncookies = -1; 651 cookies = NULL; 652 } 653 cookie_index = 0; 654 655 hammer2_inode_lock(ip, HAMMER2_RESOLVE_SHARED); 656 657 /* 658 * Handle artificial entries. To ensure that only positive 64 bit 659 * quantities are returned to userland we always strip off bit 63. 660 * The hash code is designed such that codes 0x0000-0x7FFF are not 661 * used, allowing us to use these codes for articial entries. 662 * 663 * Entry 0 is used for '.' and entry 1 is used for '..'. Do not 664 * allow '..' to cross the mount point into (e.g.) the super-root. 665 */ 666 if (saveoff == 0) { 667 inum = ip->meta.inum & HAMMER2_DIRHASH_USERMSK; 668 r = vop_write_dirent(&error, uio, inum, DT_DIR, 1, "."); 669 if (r) 670 goto done; 671 if (cookies) 672 cookies[cookie_index] = saveoff; 673 ++saveoff; 674 ++cookie_index; 675 if (cookie_index == ncookies) 676 goto done; 677 } 678 679 if (saveoff == 1) { 680 inum = ip->meta.inum & HAMMER2_DIRHASH_USERMSK; 681 if (ip != ip->pmp->iroot) 682 inum = ip->meta.iparent & HAMMER2_DIRHASH_USERMSK; 683 r = vop_write_dirent(&error, uio, inum, DT_DIR, 2, ".."); 684 if (r) 685 goto done; 686 if (cookies) 687 cookies[cookie_index] = saveoff; 688 ++saveoff; 689 ++cookie_index; 690 if (cookie_index == ncookies) 691 goto done; 692 } 693 694 lkey = saveoff | HAMMER2_DIRHASH_VISIBLE; 695 if (hammer2_debug & 0x0020) 696 kprintf("readdir: lkey %016jx\n", lkey); 697 if (error) 698 goto done; 699 700 /* 701 * Use XOP for cluster scan. 702 * 703 * parent is the inode cluster, already locked for us. Don't 704 * double lock shared locks as this will screw up upgrades. 705 */ 706 xop = hammer2_xop_alloc(ip, 0); 707 xop->lkey = lkey; 708 hammer2_xop_start(&xop->head, &hammer2_readdir_desc); 709 710 for (;;) { 711 const hammer2_inode_data_t *ripdata; 712 const char *dname; 713 int dtype; 714 715 error = hammer2_xop_collect(&xop->head, 0); 716 error = hammer2_error_to_errno(error); 717 if (error) { 718 break; 719 } 720 if (cookie_index == ncookies) 721 break; 722 if (hammer2_debug & 0x0020) 723 kprintf("cluster chain %p %p\n", 724 xop->head.cluster.focus, 725 (xop->head.cluster.focus ? 726 xop->head.cluster.focus->data : (void *)-1)); 727 hammer2_cluster_bref(&xop->head.cluster, &bref); 728 729 if (bref.type == HAMMER2_BREF_TYPE_INODE) { 730 ripdata = &hammer2_xop_gdata(&xop->head)->ipdata; 731 dtype = hammer2_get_dtype(ripdata->meta.type); 732 saveoff = bref.key & HAMMER2_DIRHASH_USERMSK; 733 r = vop_write_dirent(&error, uio, 734 ripdata->meta.inum & 735 HAMMER2_DIRHASH_USERMSK, 736 dtype, 737 ripdata->meta.name_len, 738 ripdata->filename); 739 hammer2_xop_pdata(&xop->head); 740 if (r) 741 break; 742 if (cookies) 743 cookies[cookie_index] = saveoff; 744 ++cookie_index; 745 } else if (bref.type == HAMMER2_BREF_TYPE_DIRENT) { 746 uint16_t namlen; 747 748 dtype = hammer2_get_dtype(bref.embed.dirent.type); 749 saveoff = bref.key & HAMMER2_DIRHASH_USERMSK; 750 namlen = bref.embed.dirent.namlen; 751 if (namlen <= sizeof(bref.check.buf)) { 752 dname = bref.check.buf; 753 } else { 754 dname = hammer2_xop_gdata(&xop->head)->buf; 755 } 756 r = vop_write_dirent(&error, uio, 757 bref.embed.dirent.inum, dtype, 758 namlen, dname); 759 if (namlen > sizeof(bref.check.buf)) 760 hammer2_xop_pdata(&xop->head); 761 if (r) 762 break; 763 if (cookies) 764 cookies[cookie_index] = saveoff; 765 ++cookie_index; 766 } else { 767 /* XXX chain error */ 768 kprintf("bad chain type readdir %d\n", bref.type); 769 } 770 } 771 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP); 772 if (error == ENOENT) { 773 error = 0; 774 eofflag = 1; 775 saveoff = (hammer2_key_t)-1; 776 } else { 777 saveoff = bref.key & HAMMER2_DIRHASH_USERMSK; 778 } 779 done: 780 hammer2_inode_unlock(ip); 781 if (ap->a_eofflag) 782 *ap->a_eofflag = eofflag; 783 if (hammer2_debug & 0x0020) 784 kprintf("readdir: done at %016jx\n", saveoff); 785 uio->uio_offset = saveoff & ~HAMMER2_DIRHASH_VISIBLE; 786 if (error && cookie_index == 0) { 787 if (cookies) { 788 kfree(cookies, M_TEMP); 789 *ap->a_ncookies = 0; 790 *ap->a_cookies = NULL; 791 } 792 } else { 793 if (cookies) { 794 *ap->a_ncookies = cookie_index; 795 *ap->a_cookies = cookies; 796 } 797 } 798 return (error); 799 #endif 800 return (EOPNOTSUPP); 801 } 802 803 /* 804 * hammer2_vop_readlink { vp, uio, cred } 805 */ 806 static 807 int 808 hammer2_vop_readlink(struct vop_readlink_args *ap) 809 { 810 #if 0 811 struct vnode *vp; 812 hammer2_inode_t *ip; 813 int error; 814 815 vp = ap->a_vp; 816 if (vp->v_type != VLNK) 817 return (EINVAL); 818 ip = VTOI(vp); 819 820 error = hammer2_read_file(ip, ap->a_uio, 0); 821 return (error); 822 #endif 823 return (EOPNOTSUPP); 824 } 825 826 static 827 int 828 hammer2_vop_read(struct vop_read_args *ap) 829 { 830 #if 0 831 struct vnode *vp; 832 hammer2_inode_t *ip; 833 struct uio *uio; 834 int error; 835 int seqcount; 836 int bigread; 837 838 /* 839 * Read operations supported on this vnode? 840 */ 841 vp = ap->a_vp; 842 if (vp->v_type == VDIR) 843 return (EISDIR); 844 if (vp->v_type != VREG) 845 return (EINVAL); 846 847 /* 848 * Misc 849 */ 850 ip = VTOI(vp); 851 uio = ap->a_uio; 852 error = 0; 853 854 seqcount = ap->a_ioflag >> IO_SEQSHIFT; 855 bigread = (uio->uio_resid > 100 * 1024 * 1024); 856 857 error = hammer2_read_file(ip, uio, seqcount); 858 return (error); 859 #endif 860 return (EOPNOTSUPP); 861 } 862 863 static 864 int 865 hammer2_vop_write(struct vop_write_args *ap) 866 { 867 hammer2_inode_t *ip; 868 //thread_t td; 869 struct vnode *vp; 870 struct uio *uio; 871 int error; 872 int seqcount; 873 int ioflag; 874 875 /* 876 * Read operations supported on this vnode? 877 */ 878 vp = ap->a_vp; 879 if (vp->v_type != VREG) 880 return (EINVAL); 881 882 /* 883 * Misc 884 */ 885 ip = VTOI(vp); 886 ioflag = ap->a_ioflag; 887 uio = ap->a_uio; 888 error = 0; 889 if (ip->pmp->ronly || (ip->pmp->flags & HAMMER2_PMPF_EMERG)) 890 return (EROFS); 891 switch (hammer2_vfs_enospace(ip, uio->uio_resid, ap->a_cred)) { 892 case 2: 893 return (ENOSPC); 894 case 1: 895 ioflag |= IO_DIRECT; /* semi-synchronous */ 896 /* fall through */ 897 default: 898 break; 899 } 900 901 seqcount = ioflag >> IO_SEQSHIFT; 902 903 /* 904 * Check resource limit 905 */ 906 /* 907 if (uio->uio_resid > 0 && (td = uio->uio_td) != NULL && td->td_proc && 908 uio->uio_offset + uio->uio_resid > 909 td->td_proc->p_rlimit[RLIMIT_FSIZE].rlim_cur) { 910 lwpsignal(td->td_proc, td->td_lwp, SIGXFSZ); 911 return (EFBIG); 912 } 913 */ 914 915 /* 916 * The transaction interlocks against flush initiations 917 * (note: but will run concurrently with the actual flush). 918 * 919 * To avoid deadlocking against the VM system, we must flag any 920 * transaction related to the buffer cache or other direct 921 * VM page manipulation. 922 */ 923 if (uio->uio_segflg == UIO_NOCOPY) { 924 assert(0); /* no UIO_NOCOPY in makefs */ 925 hammer2_trans_init(ip->pmp, HAMMER2_TRANS_BUFCACHE); 926 } else { 927 hammer2_trans_init(ip->pmp, 0); 928 } 929 error = hammer2_write_file(ip, uio, ioflag, seqcount); 930 if (uio->uio_segflg == UIO_NOCOPY) { 931 assert(0); /* no UIO_NOCOPY in makefs */ 932 hammer2_trans_done(ip->pmp, HAMMER2_TRANS_BUFCACHE | 933 HAMMER2_TRANS_SIDEQ); 934 } else 935 hammer2_trans_done(ip->pmp, HAMMER2_TRANS_SIDEQ); 936 937 return (error); 938 } 939 940 int 941 hammer2_write(struct vnode *vp, void *buf, size_t size, off_t offset) 942 { 943 assert(buf); 944 assert(size > 0); 945 assert(size <= HAMMER2_PBUFSIZE); 946 947 struct iovec iov = { 948 .iov_base = buf, 949 .iov_len = size, 950 }; 951 struct uio uio = { 952 .uio_iov = &iov, 953 .uio_iovcnt = 1, 954 .uio_offset = offset, 955 .uio_resid = size, 956 .uio_segflg = UIO_USERSPACE, 957 .uio_rw = UIO_WRITE, 958 .uio_td = NULL, 959 }; 960 struct vop_write_args ap = { 961 .a_vp = vp, 962 .a_uio = &uio, 963 .a_ioflag = 0, 964 .a_cred = NULL, 965 }; 966 967 return hammer2_vop_write(&ap); 968 } 969 970 #if 0 971 /* 972 * Perform read operations on a file or symlink given an UNLOCKED 973 * inode and uio. 974 * 975 * The passed ip is not locked. 976 */ 977 static 978 int 979 hammer2_read_file(hammer2_inode_t *ip, struct uio *uio, int seqcount) 980 { 981 hammer2_off_t size; 982 struct buf *bp; 983 int error; 984 985 error = 0; 986 987 /* 988 * UIO read loop. 989 * 990 * WARNING! Assumes that the kernel interlocks size changes at the 991 * vnode level. 992 */ 993 hammer2_mtx_sh(&ip->lock); 994 hammer2_mtx_sh(&ip->truncate_lock); 995 size = ip->meta.size; 996 hammer2_mtx_unlock(&ip->lock); 997 998 while (uio->uio_resid > 0 && uio->uio_offset < size) { 999 hammer2_key_t lbase; 1000 hammer2_key_t leof; 1001 int lblksize; 1002 int loff; 1003 int n; 1004 1005 lblksize = hammer2_calc_logical(ip, uio->uio_offset, 1006 &lbase, &leof); 1007 1008 #if 1 1009 bp = NULL; 1010 error = cluster_readx(ip->vp, leof, lbase, lblksize, 1011 B_NOTMETA | B_KVABIO, 1012 uio->uio_resid, 1013 seqcount * MAXBSIZE, 1014 &bp); 1015 #else 1016 if (uio->uio_segflg == UIO_NOCOPY) { 1017 bp = getblk(ip->vp, lbase, lblksize, 1018 GETBLK_BHEAVY | GETBLK_KVABIO, 0); 1019 if (bp->b_flags & B_CACHE) { 1020 int i; 1021 int j = 0; 1022 if (bp->b_xio.xio_npages != 16) 1023 kprintf("NPAGES BAD\n"); 1024 for (i = 0; i < bp->b_xio.xio_npages; ++i) { 1025 vm_page_t m; 1026 m = bp->b_xio.xio_pages[i]; 1027 if (m == NULL || m->valid == 0) { 1028 kprintf("bp %016jx %016jx pg %d inv", 1029 lbase, leof, i); 1030 if (m) 1031 kprintf("m->object %p/%p", m->object, ip->vp->v_object); 1032 kprintf("\n"); 1033 j = 1; 1034 } 1035 } 1036 if (j) 1037 kprintf("b_flags %08x, b_error %d\n", bp->b_flags, bp->b_error); 1038 } 1039 bqrelse(bp); 1040 } 1041 error = bread_kvabio(ip->vp, lbase, lblksize, &bp); 1042 #endif 1043 if (error) { 1044 brelse(bp); 1045 break; 1046 } 1047 bkvasync(bp); 1048 loff = (int)(uio->uio_offset - lbase); 1049 n = lblksize - loff; 1050 if (n > uio->uio_resid) 1051 n = uio->uio_resid; 1052 if (n > size - uio->uio_offset) 1053 n = (int)(size - uio->uio_offset); 1054 bp->b_flags |= B_AGE; 1055 uiomovebp(bp, (char *)bp->b_data + loff, n, uio); 1056 bqrelse(bp); 1057 } 1058 hammer2_mtx_unlock(&ip->truncate_lock); 1059 1060 return (error); 1061 } 1062 #endif 1063 1064 /* 1065 * Write to the file represented by the inode via the logical buffer cache. 1066 * The inode may represent a regular file or a symlink. 1067 * 1068 * The inode must not be locked. 1069 */ 1070 static 1071 int 1072 hammer2_write_file(hammer2_inode_t *ip, struct uio *uio, 1073 int ioflag, int seqcount) 1074 { 1075 hammer2_key_t old_eof; 1076 hammer2_key_t new_eof; 1077 struct buf *bp; 1078 int kflags; 1079 int error; 1080 int modified; 1081 1082 /* 1083 * Setup if append 1084 * 1085 * WARNING! Assumes that the kernel interlocks size changes at the 1086 * vnode level. 1087 */ 1088 hammer2_mtx_ex(&ip->lock); 1089 hammer2_mtx_sh(&ip->truncate_lock); 1090 if (ioflag & IO_APPEND) 1091 uio->uio_offset = ip->meta.size; 1092 old_eof = ip->meta.size; 1093 1094 /* 1095 * Extend the file if necessary. If the write fails at some point 1096 * we will truncate it back down to cover as much as we were able 1097 * to write. 1098 * 1099 * Doing this now makes it easier to calculate buffer sizes in 1100 * the loop. 1101 */ 1102 kflags = 0; 1103 error = 0; 1104 modified = 0; 1105 1106 if (uio->uio_offset + uio->uio_resid > old_eof) { 1107 new_eof = uio->uio_offset + uio->uio_resid; 1108 modified = 1; 1109 hammer2_extend_file(ip, new_eof); 1110 kflags |= NOTE_EXTEND; 1111 } else { 1112 new_eof = old_eof; 1113 } 1114 hammer2_mtx_unlock(&ip->lock); 1115 1116 /* 1117 * UIO write loop 1118 */ 1119 while (uio->uio_resid > 0) { 1120 hammer2_key_t lbase; 1121 int trivial; 1122 int endofblk; 1123 int lblksize; 1124 int loff; 1125 int n; 1126 1127 /* 1128 * Don't allow the buffer build to blow out the buffer 1129 * cache. 1130 */ 1131 if ((ioflag & IO_RECURSE) == 0) 1132 bwillwrite(HAMMER2_PBUFSIZE); 1133 1134 /* 1135 * This nominally tells us how much we can cluster and 1136 * what the logical buffer size needs to be. Currently 1137 * we don't try to cluster the write and just handle one 1138 * block at a time. 1139 */ 1140 lblksize = hammer2_calc_logical(ip, uio->uio_offset, 1141 &lbase, NULL); 1142 loff = (int)(uio->uio_offset - lbase); 1143 1144 KKASSERT(lblksize <= MAXBSIZE); 1145 1146 /* 1147 * Calculate bytes to copy this transfer and whether the 1148 * copy completely covers the buffer or not. 1149 */ 1150 trivial = 0; 1151 n = lblksize - loff; 1152 if (n > uio->uio_resid) { 1153 n = uio->uio_resid; 1154 if (loff == lbase && uio->uio_offset + n == new_eof) 1155 trivial = 1; 1156 endofblk = 0; 1157 } else { 1158 if (loff == 0) 1159 trivial = 1; 1160 endofblk = 1; 1161 } 1162 if (lbase >= new_eof) 1163 trivial = 1; 1164 trivial = 1; /* force trivial for makefs */ 1165 1166 /* 1167 * Get the buffer 1168 */ 1169 if (uio->uio_segflg == UIO_NOCOPY) { 1170 assert(0); /* no UIO_NOCOPY in makefs */ 1171 /* 1172 * Issuing a write with the same data backing the 1173 * buffer. Instantiate the buffer to collect the 1174 * backing vm pages, then read-in any missing bits. 1175 * 1176 * This case is used by vop_stdputpages(). 1177 */ 1178 bp = getblkx(ip->vp, lbase, lblksize, 1179 GETBLK_BHEAVY | GETBLK_KVABIO, 0); 1180 /* 1181 if ((bp->b_flags & B_CACHE) == 0) { 1182 bqrelse(bp); 1183 error = bread_kvabio(ip->vp, lbase, 1184 lblksize, &bp); 1185 } 1186 */ 1187 } else if (trivial) { 1188 /* 1189 * Even though we are entirely overwriting the buffer 1190 * we may still have to zero it out to avoid a 1191 * mmap/write visibility issue. 1192 */ 1193 bp = getblkx(ip->vp, lbase, lblksize, 1194 GETBLK_BHEAVY | GETBLK_KVABIO, 0); 1195 /* 1196 if ((bp->b_flags & B_CACHE) == 0) 1197 vfs_bio_clrbuf(bp); 1198 */ 1199 } else { 1200 assert(0); /* no partial write in makefs */ 1201 /* 1202 * Partial overwrite, read in any missing bits then 1203 * replace the portion being written. 1204 * 1205 * (The strategy code will detect zero-fill physical 1206 * blocks for this case). 1207 */ 1208 error = bread_kvabio(ip->vp, lbase, lblksize, &bp); 1209 if (error == 0) 1210 bheavy(bp); 1211 } 1212 1213 if (error) { 1214 brelse(bp); 1215 break; 1216 } 1217 1218 /* 1219 * Ok, copy the data in 1220 */ 1221 bkvasync(bp); 1222 error = uiomovebp(bp, bp->b_data + loff, n, uio); 1223 kflags |= NOTE_WRITE; 1224 modified = 1; 1225 if (error) { 1226 brelse(bp); 1227 break; 1228 } 1229 1230 /* 1231 * WARNING: Pageout daemon will issue UIO_NOCOPY writes 1232 * with IO_SYNC or IO_ASYNC set. These writes 1233 * must be handled as the pageout daemon expects. 1234 * 1235 * NOTE! H2 relies on cluster_write() here because it 1236 * cannot preallocate disk blocks at the logical 1237 * level due to not knowing what the compression 1238 * size will be at this time. 1239 * 1240 * We must use cluster_write() here and we depend 1241 * on the write-behind feature to flush buffers 1242 * appropriately. If we let the buffer daemons do 1243 * it the block allocations will be all over the 1244 * map. 1245 */ 1246 if (1) { 1247 bp->b_cmd = BUF_CMD_WRITE; 1248 1249 struct bio bio; 1250 bio.bio_buf = bp; 1251 bio.bio_offset = lbase; 1252 1253 struct vop_strategy_args ap; 1254 ap.a_vp = ip->vp; 1255 ap.a_bio = &bio; 1256 1257 error = hammer2_vop_strategy(&ap); 1258 assert(!error); 1259 1260 brelse(bp); 1261 } else if (ioflag & IO_SYNC) { 1262 assert(0); 1263 bwrite(bp); 1264 } else if ((ioflag & IO_DIRECT) && endofblk) { 1265 assert(0); 1266 bawrite(bp); 1267 } else if (ioflag & IO_ASYNC) { 1268 assert(0); 1269 bawrite(bp); 1270 } else if (0 /*ip->vp->v_mount->mnt_flag & MNT_NOCLUSTERW*/) { 1271 assert(0); 1272 bdwrite(bp); 1273 } else { 1274 assert(0); 1275 #if 0 1276 #if 1 1277 bp->b_flags |= B_CLUSTEROK; 1278 cluster_write(bp, new_eof, lblksize, seqcount); 1279 #else 1280 bp->b_flags |= B_CLUSTEROK; 1281 bdwrite(bp); 1282 #endif 1283 #endif 1284 } 1285 } 1286 1287 /* 1288 * Cleanup. If we extended the file EOF but failed to write through 1289 * the entire write is a failure and we have to back-up. 1290 */ 1291 if (error && new_eof != old_eof) { 1292 hammer2_mtx_unlock(&ip->truncate_lock); 1293 hammer2_mtx_ex(&ip->lock); /* note lock order */ 1294 hammer2_mtx_ex(&ip->truncate_lock); /* note lock order */ 1295 hammer2_truncate_file(ip, old_eof); 1296 if (ip->flags & HAMMER2_INODE_MODIFIED) 1297 hammer2_inode_chain_sync(ip); 1298 hammer2_mtx_unlock(&ip->lock); 1299 } else if (modified) { 1300 struct vnode *vp = ip->vp; 1301 1302 hammer2_mtx_ex(&ip->lock); 1303 hammer2_inode_modify(ip); 1304 if (uio->uio_segflg == UIO_NOCOPY) { 1305 assert(0); /* no UIO_NOCOPY in makefs */ 1306 /* 1307 if (vp->v_flag & VLASTWRITETS) { 1308 ip->meta.mtime = 1309 (unsigned long)vp->v_lastwrite_ts.tv_sec * 1310 1000000 + 1311 vp->v_lastwrite_ts.tv_nsec / 1000; 1312 } 1313 */ 1314 } else { 1315 hammer2_update_time(&ip->meta.mtime); 1316 vclrflags(vp, VLASTWRITETS); 1317 } 1318 1319 #if 0 1320 /* 1321 * REMOVED - handled by hammer2_extend_file(). Do not issue 1322 * a chain_sync() outside of a sync/fsync except for DIRECTDATA 1323 * state changes. 1324 * 1325 * Under normal conditions we only issue a chain_sync if 1326 * the inode's DIRECTDATA state changed. 1327 */ 1328 if (ip->flags & HAMMER2_INODE_RESIZED) 1329 hammer2_inode_chain_sync(ip); 1330 #endif 1331 hammer2_mtx_unlock(&ip->lock); 1332 hammer2_knote(ip->vp, kflags); 1333 } 1334 hammer2_trans_assert_strategy(ip->pmp); 1335 hammer2_mtx_unlock(&ip->truncate_lock); 1336 1337 return error; 1338 } 1339 1340 /* 1341 * Truncate the size of a file. The inode must be locked. 1342 * 1343 * We must unconditionally set HAMMER2_INODE_RESIZED to properly 1344 * ensure that any on-media data beyond the new file EOF has been destroyed. 1345 * 1346 * WARNING: nvtruncbuf() can only be safely called without the inode lock 1347 * held due to the way our write thread works. If the truncation 1348 * occurs in the middle of a buffer, nvtruncbuf() is responsible 1349 * for dirtying that buffer and zeroing out trailing bytes. 1350 * 1351 * WARNING! Assumes that the kernel interlocks size changes at the 1352 * vnode level. 1353 * 1354 * WARNING! Caller assumes responsibility for removing dead blocks 1355 * if INODE_RESIZED is set. 1356 */ 1357 static 1358 void 1359 hammer2_truncate_file(hammer2_inode_t *ip, hammer2_key_t nsize) 1360 { 1361 hammer2_key_t lbase; 1362 int nblksize; 1363 1364 hammer2_mtx_unlock(&ip->lock); 1365 if (ip->vp) { 1366 nblksize = hammer2_calc_logical(ip, nsize, &lbase, NULL); 1367 nvtruncbuf(ip->vp, nsize, 1368 nblksize, (int)nsize & (nblksize - 1), 1369 0); 1370 } 1371 hammer2_mtx_ex(&ip->lock); 1372 KKASSERT((ip->flags & HAMMER2_INODE_RESIZED) == 0); 1373 ip->osize = ip->meta.size; 1374 ip->meta.size = nsize; 1375 atomic_set_int(&ip->flags, HAMMER2_INODE_RESIZED); 1376 hammer2_inode_modify(ip); 1377 } 1378 1379 /* 1380 * Extend the size of a file. The inode must be locked. 1381 * 1382 * Even though the file size is changing, we do not have to set the 1383 * INODE_RESIZED bit unless the file size crosses the EMBEDDED_BYTES 1384 * boundary. When this occurs a hammer2_inode_chain_sync() is required 1385 * to prepare the inode cluster's indirect block table, otherwise 1386 * async execution of the strategy code will implode on us. 1387 * 1388 * WARNING! Assumes that the kernel interlocks size changes at the 1389 * vnode level. 1390 * 1391 * WARNING! Caller assumes responsibility for transitioning out 1392 * of the inode DIRECTDATA mode if INODE_RESIZED is set. 1393 */ 1394 static 1395 void 1396 hammer2_extend_file(hammer2_inode_t *ip, hammer2_key_t nsize) 1397 { 1398 hammer2_key_t lbase; 1399 hammer2_key_t osize; 1400 int oblksize; 1401 int nblksize; 1402 int error; 1403 1404 KKASSERT((ip->flags & HAMMER2_INODE_RESIZED) == 0); 1405 hammer2_inode_modify(ip); 1406 osize = ip->meta.size; 1407 ip->osize = osize; 1408 ip->meta.size = nsize; 1409 1410 /* 1411 * We must issue a chain_sync() when the DIRECTDATA state changes 1412 * to prevent confusion between the flush code and the in-memory 1413 * state. This is not perfect because we are doing it outside of 1414 * a sync/fsync operation, so it might not be fully synchronized 1415 * with the meta-data topology flush. 1416 * 1417 * We must retain and re-dirty the buffer cache buffer containing 1418 * the direct data so it can be written to a real block. It should 1419 * not be possible for a bread error to occur since the original data 1420 * is extracted from the inode structure directly. 1421 */ 1422 if (osize <= HAMMER2_EMBEDDED_BYTES && nsize > HAMMER2_EMBEDDED_BYTES) { 1423 if (osize) { 1424 assert(0); /* no such transition in makefs */ 1425 struct buf *bp; 1426 1427 oblksize = hammer2_calc_logical(ip, 0, NULL, NULL); 1428 error = bread_kvabio(ip->vp, 0, oblksize, &bp); 1429 atomic_set_int(&ip->flags, HAMMER2_INODE_RESIZED); 1430 hammer2_inode_chain_sync(ip); 1431 if (error == 0) { 1432 bheavy(bp); 1433 bdwrite(bp); 1434 } else { 1435 brelse(bp); 1436 } 1437 } else { 1438 atomic_set_int(&ip->flags, HAMMER2_INODE_RESIZED); 1439 hammer2_inode_chain_sync(ip); 1440 } 1441 } 1442 hammer2_mtx_unlock(&ip->lock); 1443 if (ip->vp) { 1444 oblksize = hammer2_calc_logical(ip, osize, &lbase, NULL); 1445 nblksize = hammer2_calc_logical(ip, nsize, &lbase, NULL); 1446 nvextendbuf(ip->vp, 1447 osize, nsize, 1448 oblksize, nblksize, 1449 -1, -1, 0); 1450 } 1451 hammer2_mtx_ex(&ip->lock); 1452 } 1453 1454 static 1455 int 1456 hammer2_vop_nresolve(struct vop_nresolve_args *ap) 1457 { 1458 hammer2_xop_nresolve_t *xop; 1459 hammer2_inode_t *ip; 1460 hammer2_inode_t *dip; 1461 struct namecache *ncp; 1462 struct vnode *vp; 1463 int error; 1464 1465 dip = VTOI(ap->a_dvp); 1466 xop = hammer2_xop_alloc(dip, 0); 1467 1468 ncp = ap->a_nch->ncp; 1469 hammer2_xop_setname(&xop->head, ncp->nc_name, ncp->nc_nlen); 1470 1471 /* 1472 * Note: In DragonFly the kernel handles '.' and '..'. 1473 */ 1474 hammer2_inode_lock(dip, HAMMER2_RESOLVE_SHARED); 1475 hammer2_xop_start(&xop->head, &hammer2_nresolve_desc); 1476 1477 error = hammer2_xop_collect(&xop->head, 0); 1478 error = hammer2_error_to_errno(error); 1479 if (error) { 1480 ip = NULL; 1481 } else { 1482 ip = hammer2_inode_get(dip->pmp, &xop->head, -1, -1); 1483 } 1484 hammer2_inode_unlock(dip); 1485 1486 /* 1487 * Acquire the related vnode 1488 * 1489 * NOTE: For error processing, only ENOENT resolves the namecache 1490 * entry to NULL, otherwise we just return the error and 1491 * leave the namecache unresolved. 1492 * 1493 * NOTE: multiple hammer2_inode structures can be aliased to the 1494 * same chain element, for example for hardlinks. This 1495 * use case does not 'reattach' inode associations that 1496 * might already exist, but always allocates a new one. 1497 * 1498 * WARNING: inode structure is locked exclusively via inode_get 1499 * but chain was locked shared. inode_unlock() 1500 * will handle it properly. 1501 */ 1502 if (ip) { 1503 vp = hammer2_igetv(ip, &error); /* error set to UNIX error */ 1504 if (error == 0) { 1505 vn_unlock(vp); 1506 cache_setvp(ap->a_nch, vp); 1507 *ap->a_vpp = vp; 1508 } else if (error == ENOENT) { 1509 cache_setvp(ap->a_nch, NULL); 1510 } 1511 hammer2_inode_unlock(ip); 1512 1513 /* 1514 * The vp should not be released until after we've disposed 1515 * of our locks, because it might cause vop_inactive() to 1516 * be called. 1517 */ 1518 if (vp) 1519 vrele(vp); 1520 } else { 1521 error = ENOENT; 1522 cache_setvp(ap->a_nch, NULL); 1523 } 1524 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP); 1525 /* 1526 KASSERT(error || ap->a_nch->ncp->nc_vp != NULL, 1527 ("resolve error %d/%p ap %p\n", 1528 error, ap->a_nch->ncp->nc_vp, ap)); 1529 */ 1530 1531 return error; 1532 } 1533 1534 int 1535 hammer2_nresolve(struct vnode *dvp, struct vnode **vpp, char *name, int nlen) 1536 { 1537 *vpp = NULL; 1538 struct namecache nc = { 1539 .nc_name = name, 1540 .nc_nlen = nlen, 1541 }; 1542 struct nchandle nch = { 1543 .ncp = &nc, 1544 }; 1545 struct vop_nresolve_args ap = { 1546 .a_nch = &nch, 1547 .a_dvp = dvp, 1548 .a_vpp = vpp, 1549 }; 1550 1551 return hammer2_vop_nresolve(&ap); 1552 } 1553 1554 static 1555 int 1556 hammer2_vop_nlookupdotdot(struct vop_nlookupdotdot_args *ap) 1557 { 1558 #if 0 1559 hammer2_inode_t *dip; 1560 hammer2_tid_t inum; 1561 int error; 1562 1563 dip = VTOI(ap->a_dvp); 1564 inum = dip->meta.iparent; 1565 *ap->a_vpp = NULL; 1566 1567 if (inum) { 1568 error = hammer2_vfs_vget(ap->a_dvp->v_mount, NULL, 1569 inum, ap->a_vpp); 1570 } else { 1571 error = ENOENT; 1572 } 1573 return error; 1574 #endif 1575 return (EOPNOTSUPP); 1576 } 1577 1578 static 1579 int 1580 hammer2_vop_nmkdir(struct vop_nmkdir_args *ap) 1581 { 1582 hammer2_inode_t *dip; 1583 hammer2_inode_t *nip; 1584 struct namecache *ncp; 1585 const uint8_t *name; 1586 size_t name_len; 1587 hammer2_tid_t inum; 1588 int error; 1589 1590 dip = VTOI(ap->a_dvp); 1591 if (dip->pmp->ronly || (dip->pmp->flags & HAMMER2_PMPF_EMERG)) 1592 return (EROFS); 1593 if (hammer2_vfs_enospace(dip, 0, ap->a_cred) > 1) 1594 return (ENOSPC); 1595 1596 ncp = ap->a_nch->ncp; 1597 name = ncp->nc_name; 1598 name_len = ncp->nc_nlen; 1599 1600 hammer2_trans_init(dip->pmp, 0); 1601 1602 inum = hammer2_trans_newinum(dip->pmp); 1603 1604 /* 1605 * Create the actual inode as a hidden file in the iroot, then 1606 * create the directory entry. The creation of the actual inode 1607 * sets its nlinks to 1 which is the value we desire. 1608 * 1609 * dip must be locked before nip to avoid deadlock. 1610 */ 1611 hammer2_inode_lock(dip, 0); 1612 nip = hammer2_inode_create_normal(dip, ap->a_vap, ap->a_cred, 1613 inum, &error); 1614 if (error) { 1615 error = hammer2_error_to_errno(error); 1616 } else { 1617 error = hammer2_dirent_create(dip, name, name_len, 1618 nip->meta.inum, nip->meta.type); 1619 /* returns UNIX error code */ 1620 } 1621 if (error) { 1622 if (nip) { 1623 hammer2_inode_unlink_finisher(nip, NULL); 1624 hammer2_inode_unlock(nip); 1625 nip = NULL; 1626 } 1627 *ap->a_vpp = NULL; 1628 } else { 1629 /* 1630 * inode_depend() must occur before the igetv() because 1631 * the igetv() can temporarily release the inode lock. 1632 */ 1633 hammer2_inode_depend(dip, nip); /* before igetv */ 1634 *ap->a_vpp = hammer2_igetv(nip, &error); 1635 hammer2_inode_unlock(nip); 1636 } 1637 1638 /* 1639 * Update dip's mtime 1640 * 1641 * We can use a shared inode lock and allow the meta.mtime update 1642 * SMP race. hammer2_inode_modify() is MPSAFE w/a shared lock. 1643 */ 1644 if (error == 0) { 1645 uint64_t mtime; 1646 1647 /*hammer2_inode_lock(dip, HAMMER2_RESOLVE_SHARED);*/ 1648 hammer2_update_time(&mtime); 1649 hammer2_inode_modify(dip); 1650 dip->meta.mtime = mtime; 1651 /*hammer2_inode_unlock(dip);*/ 1652 } 1653 hammer2_inode_unlock(dip); 1654 1655 hammer2_trans_done(dip->pmp, HAMMER2_TRANS_SIDEQ); 1656 1657 if (error == 0) { 1658 cache_setunresolved(ap->a_nch); 1659 cache_setvp(ap->a_nch, *ap->a_vpp); 1660 hammer2_knote(ap->a_dvp, NOTE_WRITE | NOTE_LINK); 1661 } 1662 return error; 1663 } 1664 1665 int 1666 hammer2_nmkdir(struct vnode *dvp, struct vnode **vpp, char *name, int nlen) 1667 { 1668 struct namecache nc = { 1669 .nc_name = name, 1670 .nc_nlen = nlen, 1671 }; 1672 struct nchandle nch = { 1673 .ncp = &nc, 1674 }; 1675 uid_t va_uid = VNOVAL; //getuid(); 1676 uid_t va_gid = VNOVAL; //getgid(); 1677 struct vattr va = { 1678 .va_type = VDIR, 1679 .va_mode = 0755, /* should be tunable */ 1680 .va_uid = va_uid, 1681 .va_gid = va_gid, 1682 }; 1683 struct vop_nmkdir_args ap = { 1684 .a_nch = &nch, 1685 .a_dvp = dvp, 1686 .a_vpp = vpp, 1687 .a_vap = &va, 1688 }; 1689 1690 return hammer2_vop_nmkdir(&ap); 1691 } 1692 1693 static 1694 int 1695 hammer2_vop_open(struct vop_open_args *ap) 1696 { 1697 #if 0 1698 return vop_stdopen(ap); 1699 #endif 1700 return (EOPNOTSUPP); 1701 } 1702 1703 /* 1704 * hammer2_vop_advlock { vp, id, op, fl, flags } 1705 */ 1706 static 1707 int 1708 hammer2_vop_advlock(struct vop_advlock_args *ap) 1709 { 1710 #if 0 1711 hammer2_inode_t *ip = VTOI(ap->a_vp); 1712 hammer2_off_t size; 1713 1714 size = ip->meta.size; 1715 return (lf_advlock(ap, &ip->advlock, size)); 1716 #endif 1717 return (EOPNOTSUPP); 1718 } 1719 1720 static 1721 int 1722 hammer2_vop_close(struct vop_close_args *ap) 1723 { 1724 #if 0 1725 return vop_stdclose(ap); 1726 #endif 1727 return (EOPNOTSUPP); 1728 } 1729 1730 /* 1731 * hammer2_vop_nlink { nch, dvp, vp, cred } 1732 * 1733 * Create a hardlink from (vp) to {dvp, nch}. 1734 */ 1735 static 1736 int 1737 hammer2_vop_nlink(struct vop_nlink_args *ap) 1738 { 1739 hammer2_inode_t *tdip; /* target directory to create link in */ 1740 hammer2_inode_t *ip; /* inode we are hardlinking to */ 1741 struct namecache *ncp; 1742 const uint8_t *name; 1743 size_t name_len; 1744 int error; 1745 uint64_t cmtime; 1746 1747 /* We know it's the same in makefs */ 1748 /* 1749 if (ap->a_dvp->v_mount != ap->a_vp->v_mount) 1750 return(EXDEV); 1751 */ 1752 1753 tdip = VTOI(ap->a_dvp); 1754 if (tdip->pmp->ronly || (tdip->pmp->flags & HAMMER2_PMPF_EMERG)) 1755 return (EROFS); 1756 if (hammer2_vfs_enospace(tdip, 0, ap->a_cred) > 1) 1757 return (ENOSPC); 1758 1759 ncp = ap->a_nch->ncp; 1760 name = ncp->nc_name; 1761 name_len = ncp->nc_nlen; 1762 1763 /* 1764 * ip represents the file being hardlinked. The file could be a 1765 * normal file or a hardlink target if it has already been hardlinked. 1766 * (with the new semantics, it will almost always be a hardlink 1767 * target). 1768 * 1769 * Bump nlinks and potentially also create or move the hardlink 1770 * target in the parent directory common to (ip) and (tdip). The 1771 * consolidation code can modify ip->cluster. The returned cluster 1772 * is locked. 1773 */ 1774 ip = VTOI(ap->a_vp); 1775 KASSERT(ip->pmp, ("ip->pmp is NULL %p %p", ip, ip->pmp)); 1776 hammer2_trans_init(ip->pmp, 0); 1777 1778 /* 1779 * Target should be an indexed inode or there's no way we will ever 1780 * be able to find it! 1781 */ 1782 KKASSERT((ip->meta.name_key & HAMMER2_DIRHASH_VISIBLE) == 0); 1783 1784 error = 0; 1785 1786 /* 1787 * Can return NULL and error == EXDEV if the common parent 1788 * crosses a directory with the xlink flag set. 1789 */ 1790 hammer2_inode_lock4(tdip, ip, NULL, NULL); 1791 1792 hammer2_update_time(&cmtime); 1793 1794 /* 1795 * Create the directory entry and bump nlinks. 1796 * Also update ip's ctime. 1797 */ 1798 if (error == 0) { 1799 error = hammer2_dirent_create(tdip, name, name_len, 1800 ip->meta.inum, ip->meta.type); 1801 hammer2_inode_modify(ip); 1802 ++ip->meta.nlinks; 1803 ip->meta.ctime = cmtime; 1804 } 1805 if (error == 0) { 1806 /* 1807 * Update dip's [cm]time 1808 */ 1809 hammer2_inode_modify(tdip); 1810 tdip->meta.mtime = cmtime; 1811 tdip->meta.ctime = cmtime; 1812 1813 cache_setunresolved(ap->a_nch); 1814 cache_setvp(ap->a_nch, ap->a_vp); 1815 } 1816 hammer2_inode_unlock(ip); 1817 hammer2_inode_unlock(tdip); 1818 1819 hammer2_trans_done(ip->pmp, HAMMER2_TRANS_SIDEQ); 1820 hammer2_knote(ap->a_vp, NOTE_LINK); 1821 hammer2_knote(ap->a_dvp, NOTE_WRITE); 1822 1823 return error; 1824 } 1825 1826 int 1827 hammer2_nlink(struct vnode *dvp, struct vnode *vp, char *name, int nlen) 1828 { 1829 struct namecache nc = { 1830 .nc_name = name, 1831 .nc_nlen = nlen, 1832 }; 1833 struct nchandle nch = { 1834 .ncp = &nc, 1835 }; 1836 struct vop_nlink_args ap = { 1837 .a_nch = &nch, 1838 .a_dvp = dvp, 1839 .a_vp = vp, 1840 }; 1841 1842 return hammer2_vop_nlink(&ap); 1843 } 1844 1845 /* 1846 * hammer2_vop_ncreate { nch, dvp, vpp, cred, vap } 1847 * 1848 * The operating system has already ensured that the directory entry 1849 * does not exist and done all appropriate namespace locking. 1850 */ 1851 static 1852 int 1853 hammer2_vop_ncreate(struct vop_ncreate_args *ap) 1854 { 1855 hammer2_inode_t *dip; 1856 hammer2_inode_t *nip; 1857 struct namecache *ncp; 1858 const uint8_t *name; 1859 size_t name_len; 1860 hammer2_tid_t inum; 1861 int error; 1862 1863 dip = VTOI(ap->a_dvp); 1864 if (dip->pmp->ronly || (dip->pmp->flags & HAMMER2_PMPF_EMERG)) 1865 return (EROFS); 1866 if (hammer2_vfs_enospace(dip, 0, ap->a_cred) > 1) 1867 return (ENOSPC); 1868 1869 ncp = ap->a_nch->ncp; 1870 name = ncp->nc_name; 1871 name_len = ncp->nc_nlen; 1872 hammer2_trans_init(dip->pmp, 0); 1873 1874 inum = hammer2_trans_newinum(dip->pmp); 1875 1876 /* 1877 * Create the actual inode as a hidden file in the iroot, then 1878 * create the directory entry. The creation of the actual inode 1879 * sets its nlinks to 1 which is the value we desire. 1880 * 1881 * dip must be locked before nip to avoid deadlock. 1882 */ 1883 hammer2_inode_lock(dip, 0); 1884 nip = hammer2_inode_create_normal(dip, ap->a_vap, ap->a_cred, 1885 inum, &error); 1886 1887 if (error) { 1888 error = hammer2_error_to_errno(error); 1889 } else { 1890 error = hammer2_dirent_create(dip, name, name_len, 1891 nip->meta.inum, nip->meta.type); 1892 } 1893 if (error) { 1894 if (nip) { 1895 hammer2_inode_unlink_finisher(nip, NULL); 1896 hammer2_inode_unlock(nip); 1897 nip = NULL; 1898 } 1899 *ap->a_vpp = NULL; 1900 } else { 1901 hammer2_inode_depend(dip, nip); /* before igetv */ 1902 *ap->a_vpp = hammer2_igetv(nip, &error); 1903 hammer2_inode_unlock(nip); 1904 } 1905 1906 /* 1907 * Update dip's mtime 1908 */ 1909 if (error == 0) { 1910 uint64_t mtime; 1911 1912 /*hammer2_inode_lock(dip, HAMMER2_RESOLVE_SHARED);*/ 1913 hammer2_update_time(&mtime); 1914 hammer2_inode_modify(dip); 1915 dip->meta.mtime = mtime; 1916 /*hammer2_inode_unlock(dip);*/ 1917 } 1918 hammer2_inode_unlock(dip); 1919 1920 hammer2_trans_done(dip->pmp, HAMMER2_TRANS_SIDEQ); 1921 1922 if (error == 0) { 1923 cache_setunresolved(ap->a_nch); 1924 cache_setvp(ap->a_nch, *ap->a_vpp); 1925 hammer2_knote(ap->a_dvp, NOTE_WRITE); 1926 } 1927 return error; 1928 } 1929 1930 int 1931 hammer2_ncreate(struct vnode *dvp, struct vnode **vpp, char *name, int nlen) 1932 { 1933 struct namecache nc = { 1934 .nc_name = name, 1935 .nc_nlen = nlen, 1936 }; 1937 struct nchandle nch = { 1938 .ncp = &nc, 1939 }; 1940 uid_t va_uid = VNOVAL; //getuid(); 1941 uid_t va_gid = VNOVAL; //getgid(); 1942 struct vattr va = { 1943 .va_type = VREG, 1944 .va_mode = 0644, /* should be tunable */ 1945 .va_uid = va_uid, 1946 .va_gid = va_gid, 1947 }; 1948 struct vop_ncreate_args ap = { 1949 .a_nch = &nch, 1950 .a_dvp = dvp, 1951 .a_vpp = vpp, 1952 .a_vap = &va, 1953 }; 1954 1955 return hammer2_vop_ncreate(&ap); 1956 } 1957 1958 /* 1959 * Make a device node (typically a fifo) 1960 */ 1961 static 1962 int 1963 hammer2_vop_nmknod(struct vop_nmknod_args *ap) 1964 { 1965 #if 0 1966 hammer2_inode_t *dip; 1967 hammer2_inode_t *nip; 1968 struct namecache *ncp; 1969 const uint8_t *name; 1970 size_t name_len; 1971 hammer2_tid_t inum; 1972 int error; 1973 1974 dip = VTOI(ap->a_dvp); 1975 if (dip->pmp->ronly || (dip->pmp->flags & HAMMER2_PMPF_EMERG)) 1976 return (EROFS); 1977 if (hammer2_vfs_enospace(dip, 0, ap->a_cred) > 1) 1978 return (ENOSPC); 1979 1980 ncp = ap->a_nch->ncp; 1981 name = ncp->nc_name; 1982 name_len = ncp->nc_nlen; 1983 hammer2_trans_init(dip->pmp, 0); 1984 1985 /* 1986 * Create the device inode and then create the directory entry. 1987 * 1988 * dip must be locked before nip to avoid deadlock. 1989 */ 1990 inum = hammer2_trans_newinum(dip->pmp); 1991 1992 hammer2_inode_lock(dip, 0); 1993 nip = hammer2_inode_create_normal(dip, ap->a_vap, ap->a_cred, 1994 inum, &error); 1995 if (error == 0) { 1996 error = hammer2_dirent_create(dip, name, name_len, 1997 nip->meta.inum, nip->meta.type); 1998 } 1999 if (error) { 2000 if (nip) { 2001 hammer2_inode_unlink_finisher(nip, NULL); 2002 hammer2_inode_unlock(nip); 2003 nip = NULL; 2004 } 2005 *ap->a_vpp = NULL; 2006 } else { 2007 hammer2_inode_depend(dip, nip); /* before igetv */ 2008 *ap->a_vpp = hammer2_igetv(nip, &error); 2009 hammer2_inode_unlock(nip); 2010 } 2011 2012 /* 2013 * Update dip's mtime 2014 */ 2015 if (error == 0) { 2016 uint64_t mtime; 2017 2018 /*hammer2_inode_lock(dip, HAMMER2_RESOLVE_SHARED);*/ 2019 hammer2_update_time(&mtime); 2020 hammer2_inode_modify(dip); 2021 dip->meta.mtime = mtime; 2022 /*hammer2_inode_unlock(dip);*/ 2023 } 2024 hammer2_inode_unlock(dip); 2025 2026 hammer2_trans_done(dip->pmp, HAMMER2_TRANS_SIDEQ); 2027 2028 if (error == 0) { 2029 cache_setunresolved(ap->a_nch); 2030 cache_setvp(ap->a_nch, *ap->a_vpp); 2031 hammer2_knote(ap->a_dvp, NOTE_WRITE); 2032 } 2033 return error; 2034 #endif 2035 return (EOPNOTSUPP); 2036 } 2037 2038 /* 2039 * hammer2_vop_nsymlink { nch, dvp, vpp, cred, vap, target } 2040 */ 2041 static 2042 int 2043 hammer2_vop_nsymlink(struct vop_nsymlink_args *ap) 2044 { 2045 hammer2_inode_t *dip; 2046 hammer2_inode_t *nip; 2047 struct namecache *ncp; 2048 const uint8_t *name; 2049 size_t name_len; 2050 hammer2_tid_t inum; 2051 int error; 2052 2053 dip = VTOI(ap->a_dvp); 2054 if (dip->pmp->ronly || (dip->pmp->flags & HAMMER2_PMPF_EMERG)) 2055 return (EROFS); 2056 if (hammer2_vfs_enospace(dip, 0, ap->a_cred) > 1) 2057 return (ENOSPC); 2058 2059 ncp = ap->a_nch->ncp; 2060 name = ncp->nc_name; 2061 name_len = ncp->nc_nlen; 2062 hammer2_trans_init(dip->pmp, 0); 2063 2064 ap->a_vap->va_type = VLNK; /* enforce type */ 2065 2066 /* 2067 * Create the softlink as an inode and then create the directory 2068 * entry. 2069 * 2070 * dip must be locked before nip to avoid deadlock. 2071 */ 2072 inum = hammer2_trans_newinum(dip->pmp); 2073 2074 hammer2_inode_lock(dip, 0); 2075 nip = hammer2_inode_create_normal(dip, ap->a_vap, ap->a_cred, 2076 inum, &error); 2077 if (error == 0) { 2078 error = hammer2_dirent_create(dip, name, name_len, 2079 nip->meta.inum, nip->meta.type); 2080 } 2081 if (error) { 2082 if (nip) { 2083 hammer2_inode_unlink_finisher(nip, NULL); 2084 hammer2_inode_unlock(nip); 2085 nip = NULL; 2086 } 2087 *ap->a_vpp = NULL; 2088 hammer2_inode_unlock(dip); 2089 hammer2_trans_done(dip->pmp, HAMMER2_TRANS_SIDEQ); 2090 return error; 2091 } 2092 hammer2_inode_depend(dip, nip); /* before igetv */ 2093 *ap->a_vpp = hammer2_igetv(nip, &error); 2094 2095 /* 2096 * Build the softlink (~like file data) and finalize the namecache. 2097 */ 2098 if (error == 0) { 2099 size_t bytes; 2100 struct uio auio; 2101 struct iovec aiov; 2102 2103 bytes = strlen(ap->a_target); 2104 2105 hammer2_inode_unlock(nip); 2106 bzero(&auio, sizeof(auio)); 2107 bzero(&aiov, sizeof(aiov)); 2108 auio.uio_iov = &aiov; 2109 auio.uio_segflg = UIO_SYSSPACE; 2110 auio.uio_rw = UIO_WRITE; 2111 auio.uio_resid = bytes; 2112 auio.uio_iovcnt = 1; 2113 auio.uio_td = curthread; 2114 aiov.iov_base = ap->a_target; 2115 aiov.iov_len = bytes; 2116 error = hammer2_write_file(nip, &auio, IO_APPEND, 0); 2117 /* XXX handle error */ 2118 error = 0; 2119 } else { 2120 hammer2_inode_unlock(nip); 2121 } 2122 2123 /* 2124 * Update dip's mtime 2125 */ 2126 if (error == 0) { 2127 uint64_t mtime; 2128 2129 /*hammer2_inode_lock(dip, HAMMER2_RESOLVE_SHARED);*/ 2130 hammer2_update_time(&mtime); 2131 hammer2_inode_modify(dip); 2132 dip->meta.mtime = mtime; 2133 /*hammer2_inode_unlock(dip);*/ 2134 } 2135 hammer2_inode_unlock(dip); 2136 2137 hammer2_trans_done(dip->pmp, HAMMER2_TRANS_SIDEQ); 2138 2139 /* 2140 * Finalize namecache 2141 */ 2142 if (error == 0) { 2143 cache_setunresolved(ap->a_nch); 2144 cache_setvp(ap->a_nch, *ap->a_vpp); 2145 hammer2_knote(ap->a_dvp, NOTE_WRITE); 2146 } 2147 return error; 2148 } 2149 2150 int 2151 hammer2_nsymlink(struct vnode *dvp, struct vnode **vpp, char *name, int nlen, 2152 char *target) 2153 { 2154 struct namecache nc = { 2155 .nc_name = name, 2156 .nc_nlen = nlen, 2157 }; 2158 struct nchandle nch = { 2159 .ncp = &nc, 2160 }; 2161 uid_t va_uid = VNOVAL; //getuid(); 2162 uid_t va_gid = VNOVAL; //getgid(); 2163 struct vattr va = { 2164 .va_type = VDIR, 2165 .va_mode = 0755, /* should be tunable */ 2166 .va_uid = va_uid, 2167 .va_gid = va_gid, 2168 }; 2169 struct vop_nsymlink_args ap = { 2170 .a_nch = &nch, 2171 .a_dvp = dvp, 2172 .a_vpp = vpp, 2173 .a_vap = &va, 2174 .a_target = target, 2175 }; 2176 2177 return hammer2_vop_nsymlink(&ap); 2178 } 2179 2180 /* 2181 * hammer2_vop_nremove { nch, dvp, cred } 2182 */ 2183 static 2184 int 2185 hammer2_vop_nremove(struct vop_nremove_args *ap) 2186 { 2187 #if 0 2188 hammer2_xop_unlink_t *xop; 2189 hammer2_inode_t *dip; 2190 hammer2_inode_t *ip; 2191 struct vnode *vprecycle; 2192 struct namecache *ncp; 2193 int error; 2194 2195 dip = VTOI(ap->a_dvp); 2196 if (dip->pmp->ronly) 2197 return (EROFS); 2198 #if 0 2199 /* allow removals, except user to also bulkfree */ 2200 if (hammer2_vfs_enospace(dip, 0, ap->a_cred) > 1) 2201 return (ENOSPC); 2202 #endif 2203 2204 ncp = ap->a_nch->ncp; 2205 2206 if (hammer2_debug_inode && dip->meta.inum == hammer2_debug_inode) { 2207 kprintf("hammer2: attempt to delete inside debug inode: %s\n", 2208 ncp->nc_name); 2209 while (hammer2_debug_inode && 2210 dip->meta.inum == hammer2_debug_inode) { 2211 tsleep(&hammer2_debug_inode, 0, "h2debug", hz*5); 2212 } 2213 } 2214 2215 hammer2_trans_init(dip->pmp, 0); 2216 hammer2_inode_lock(dip, 0); 2217 2218 /* 2219 * The unlink XOP unlinks the path from the directory and 2220 * locates and returns the cluster associated with the real inode. 2221 * We have to handle nlinks here on the frontend. 2222 */ 2223 xop = hammer2_xop_alloc(dip, HAMMER2_XOP_MODIFYING); 2224 hammer2_xop_setname(&xop->head, ncp->nc_name, ncp->nc_nlen); 2225 2226 xop->isdir = 0; 2227 xop->dopermanent = 0; 2228 hammer2_xop_start(&xop->head, &hammer2_unlink_desc); 2229 2230 /* 2231 * Collect the real inode and adjust nlinks, destroy the real 2232 * inode if nlinks transitions to 0 and it was the real inode 2233 * (else it has already been removed). 2234 */ 2235 error = hammer2_xop_collect(&xop->head, 0); 2236 error = hammer2_error_to_errno(error); 2237 vprecycle = NULL; 2238 2239 if (error == 0) { 2240 ip = hammer2_inode_get(dip->pmp, &xop->head, -1, -1); 2241 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP); 2242 if (ip) { 2243 if (hammer2_debug_inode && 2244 ip->meta.inum == hammer2_debug_inode) { 2245 kprintf("hammer2: attempt to delete debug " 2246 "inode!\n"); 2247 while (hammer2_debug_inode && 2248 ip->meta.inum == hammer2_debug_inode) { 2249 tsleep(&hammer2_debug_inode, 0, 2250 "h2debug", hz*5); 2251 } 2252 } 2253 hammer2_inode_unlink_finisher(ip, &vprecycle); 2254 hammer2_inode_depend(dip, ip); /* after modified */ 2255 hammer2_inode_unlock(ip); 2256 } 2257 } else { 2258 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP); 2259 } 2260 2261 /* 2262 * Update dip's mtime 2263 */ 2264 if (error == 0) { 2265 uint64_t mtime; 2266 2267 /*hammer2_inode_lock(dip, HAMMER2_RESOLVE_SHARED);*/ 2268 hammer2_update_time(&mtime); 2269 hammer2_inode_modify(dip); 2270 dip->meta.mtime = mtime; 2271 /*hammer2_inode_unlock(dip);*/ 2272 } 2273 hammer2_inode_unlock(dip); 2274 2275 hammer2_trans_done(dip->pmp, HAMMER2_TRANS_SIDEQ); 2276 if (error == 0) { 2277 cache_unlink(ap->a_nch); 2278 hammer2_knote(ap->a_dvp, NOTE_WRITE); 2279 } 2280 if (vprecycle) 2281 hammer2_inode_vprecycle(vprecycle); 2282 2283 return (error); 2284 #endif 2285 return (EOPNOTSUPP); 2286 } 2287 2288 /* 2289 * hammer2_vop_nrmdir { nch, dvp, cred } 2290 */ 2291 static 2292 int 2293 hammer2_vop_nrmdir(struct vop_nrmdir_args *ap) 2294 { 2295 #if 0 2296 hammer2_xop_unlink_t *xop; 2297 hammer2_inode_t *dip; 2298 hammer2_inode_t *ip; 2299 struct namecache *ncp; 2300 struct vnode *vprecycle; 2301 int error; 2302 2303 dip = VTOI(ap->a_dvp); 2304 if (dip->pmp->ronly) 2305 return (EROFS); 2306 #if 0 2307 /* allow removals, except user to also bulkfree */ 2308 if (hammer2_vfs_enospace(dip, 0, ap->a_cred) > 1) 2309 return (ENOSPC); 2310 #endif 2311 2312 hammer2_trans_init(dip->pmp, 0); 2313 hammer2_inode_lock(dip, 0); 2314 2315 xop = hammer2_xop_alloc(dip, HAMMER2_XOP_MODIFYING); 2316 2317 ncp = ap->a_nch->ncp; 2318 hammer2_xop_setname(&xop->head, ncp->nc_name, ncp->nc_nlen); 2319 xop->isdir = 1; 2320 xop->dopermanent = 0; 2321 hammer2_xop_start(&xop->head, &hammer2_unlink_desc); 2322 2323 /* 2324 * Collect the real inode and adjust nlinks, destroy the real 2325 * inode if nlinks transitions to 0 and it was the real inode 2326 * (else it has already been removed). 2327 */ 2328 error = hammer2_xop_collect(&xop->head, 0); 2329 error = hammer2_error_to_errno(error); 2330 vprecycle = NULL; 2331 2332 if (error == 0) { 2333 ip = hammer2_inode_get(dip->pmp, &xop->head, -1, -1); 2334 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP); 2335 if (ip) { 2336 hammer2_inode_unlink_finisher(ip, &vprecycle); 2337 hammer2_inode_depend(dip, ip); /* after modified */ 2338 hammer2_inode_unlock(ip); 2339 } 2340 } else { 2341 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP); 2342 } 2343 2344 /* 2345 * Update dip's mtime 2346 */ 2347 if (error == 0) { 2348 uint64_t mtime; 2349 2350 /*hammer2_inode_lock(dip, HAMMER2_RESOLVE_SHARED);*/ 2351 hammer2_update_time(&mtime); 2352 hammer2_inode_modify(dip); 2353 dip->meta.mtime = mtime; 2354 /*hammer2_inode_unlock(dip);*/ 2355 } 2356 hammer2_inode_unlock(dip); 2357 2358 hammer2_trans_done(dip->pmp, HAMMER2_TRANS_SIDEQ); 2359 if (error == 0) { 2360 cache_unlink(ap->a_nch); 2361 hammer2_knote(ap->a_dvp, NOTE_WRITE | NOTE_LINK); 2362 } 2363 if (vprecycle) 2364 hammer2_inode_vprecycle(vprecycle); 2365 return (error); 2366 #endif 2367 return (EOPNOTSUPP); 2368 } 2369 2370 /* 2371 * hammer2_vop_nrename { fnch, tnch, fdvp, tdvp, cred } 2372 */ 2373 static 2374 int 2375 hammer2_vop_nrename(struct vop_nrename_args *ap) 2376 { 2377 #if 0 2378 struct namecache *fncp; 2379 struct namecache *tncp; 2380 hammer2_inode_t *fdip; /* source directory */ 2381 hammer2_inode_t *tdip; /* target directory */ 2382 hammer2_inode_t *ip; /* file being renamed */ 2383 hammer2_inode_t *tip; /* replaced target during rename or NULL */ 2384 struct vnode *vprecycle; 2385 const uint8_t *fname; 2386 size_t fname_len; 2387 const uint8_t *tname; 2388 size_t tname_len; 2389 int error; 2390 int update_tdip; 2391 int update_fdip; 2392 hammer2_key_t tlhc; 2393 2394 if (ap->a_fdvp->v_mount != ap->a_tdvp->v_mount) 2395 return(EXDEV); 2396 if (ap->a_fdvp->v_mount != ap->a_fnch->ncp->nc_vp->v_mount) 2397 return(EXDEV); 2398 2399 fdip = VTOI(ap->a_fdvp); /* source directory */ 2400 tdip = VTOI(ap->a_tdvp); /* target directory */ 2401 2402 if (fdip->pmp->ronly || (fdip->pmp->flags & HAMMER2_PMPF_EMERG)) 2403 return (EROFS); 2404 if (hammer2_vfs_enospace(fdip, 0, ap->a_cred) > 1) 2405 return (ENOSPC); 2406 2407 fncp = ap->a_fnch->ncp; /* entry name in source */ 2408 fname = fncp->nc_name; 2409 fname_len = fncp->nc_nlen; 2410 2411 tncp = ap->a_tnch->ncp; /* entry name in target */ 2412 tname = tncp->nc_name; 2413 tname_len = tncp->nc_nlen; 2414 2415 hammer2_trans_init(tdip->pmp, 0); 2416 2417 update_tdip = 0; 2418 update_fdip = 0; 2419 2420 ip = VTOI(fncp->nc_vp); 2421 hammer2_inode_ref(ip); /* extra ref */ 2422 2423 /* 2424 * Lookup the target name to determine if a directory entry 2425 * is being overwritten. We only hold related inode locks 2426 * temporarily, the operating system is expected to protect 2427 * against rename races. 2428 */ 2429 tip = tncp->nc_vp ? VTOI(tncp->nc_vp) : NULL; 2430 if (tip) 2431 hammer2_inode_ref(tip); /* extra ref */ 2432 2433 /* 2434 * Can return NULL and error == EXDEV if the common parent 2435 * crosses a directory with the xlink flag set. 2436 * 2437 * For now try to avoid deadlocks with a simple pointer address 2438 * test. (tip) can be NULL. 2439 */ 2440 error = 0; 2441 { 2442 hammer2_inode_t *ip1 = fdip; 2443 hammer2_inode_t *ip2 = tdip; 2444 hammer2_inode_t *ip3 = ip; 2445 hammer2_inode_t *ip4 = tip; /* may be NULL */ 2446 2447 if (fdip > tdip) { 2448 ip1 = tdip; 2449 ip2 = fdip; 2450 } 2451 if (tip && ip > tip) { 2452 ip3 = tip; 2453 ip4 = ip; 2454 } 2455 hammer2_inode_lock4(ip1, ip2, ip3, ip4); 2456 } 2457 2458 /* 2459 * Resolve the collision space for (tdip, tname, tname_len) 2460 * 2461 * tdip must be held exclusively locked to prevent races since 2462 * multiple filenames can end up in the same collision space. 2463 */ 2464 { 2465 hammer2_xop_scanlhc_t *sxop; 2466 hammer2_tid_t lhcbase; 2467 2468 tlhc = hammer2_dirhash(tname, tname_len); 2469 lhcbase = tlhc; 2470 sxop = hammer2_xop_alloc(tdip, HAMMER2_XOP_MODIFYING); 2471 sxop->lhc = tlhc; 2472 hammer2_xop_start(&sxop->head, &hammer2_scanlhc_desc); 2473 while ((error = hammer2_xop_collect(&sxop->head, 0)) == 0) { 2474 if (tlhc != sxop->head.cluster.focus->bref.key) 2475 break; 2476 ++tlhc; 2477 } 2478 error = hammer2_error_to_errno(error); 2479 hammer2_xop_retire(&sxop->head, HAMMER2_XOPMASK_VOP); 2480 2481 if (error) { 2482 if (error != ENOENT) 2483 goto done2; 2484 ++tlhc; 2485 error = 0; 2486 } 2487 if ((lhcbase ^ tlhc) & ~HAMMER2_DIRHASH_LOMASK) { 2488 error = ENOSPC; 2489 goto done2; 2490 } 2491 } 2492 2493 /* 2494 * Ready to go, issue the rename to the backend. Note that meta-data 2495 * updates to the related inodes occur separately from the rename 2496 * operation. 2497 * 2498 * NOTE: While it is not necessary to update ip->meta.name*, doing 2499 * so aids catastrophic recovery and debugging. 2500 */ 2501 if (error == 0) { 2502 hammer2_xop_nrename_t *xop4; 2503 2504 xop4 = hammer2_xop_alloc(fdip, HAMMER2_XOP_MODIFYING); 2505 xop4->lhc = tlhc; 2506 xop4->ip_key = ip->meta.name_key; 2507 hammer2_xop_setip2(&xop4->head, ip); 2508 hammer2_xop_setip3(&xop4->head, tdip); 2509 if (tip && tip->meta.type == HAMMER2_OBJTYPE_DIRECTORY) 2510 hammer2_xop_setip4(&xop4->head, tip); 2511 hammer2_xop_setname(&xop4->head, fname, fname_len); 2512 hammer2_xop_setname2(&xop4->head, tname, tname_len); 2513 hammer2_xop_start(&xop4->head, &hammer2_nrename_desc); 2514 2515 error = hammer2_xop_collect(&xop4->head, 0); 2516 error = hammer2_error_to_errno(error); 2517 hammer2_xop_retire(&xop4->head, HAMMER2_XOPMASK_VOP); 2518 2519 if (error == ENOENT) 2520 error = 0; 2521 2522 /* 2523 * Update inode meta-data. 2524 * 2525 * WARNING! The in-memory inode (ip) structure does not 2526 * maintain a copy of the inode's filename buffer. 2527 */ 2528 if (error == 0 && 2529 (ip->meta.name_key & HAMMER2_DIRHASH_VISIBLE)) { 2530 hammer2_inode_modify(ip); 2531 ip->meta.name_len = tname_len; 2532 ip->meta.name_key = tlhc; 2533 } 2534 if (error == 0) { 2535 hammer2_inode_modify(ip); 2536 ip->meta.iparent = tdip->meta.inum; 2537 } 2538 update_fdip = 1; 2539 update_tdip = 1; 2540 } 2541 2542 done2: 2543 /* 2544 * If no error, the backend has replaced the target directory entry. 2545 * We must adjust nlinks on the original replace target if it exists. 2546 */ 2547 vprecycle = NULL; 2548 if (error == 0 && tip) { 2549 hammer2_inode_unlink_finisher(tip, &vprecycle); 2550 } 2551 2552 /* 2553 * Update directory mtimes to represent the something changed. 2554 */ 2555 if (update_fdip || update_tdip) { 2556 uint64_t mtime; 2557 2558 hammer2_update_time(&mtime); 2559 if (update_fdip) { 2560 hammer2_inode_modify(fdip); 2561 fdip->meta.mtime = mtime; 2562 } 2563 if (update_tdip) { 2564 hammer2_inode_modify(tdip); 2565 tdip->meta.mtime = mtime; 2566 } 2567 } 2568 if (tip) { 2569 hammer2_inode_unlock(tip); 2570 hammer2_inode_drop(tip); 2571 } 2572 hammer2_inode_unlock(ip); 2573 hammer2_inode_unlock(tdip); 2574 hammer2_inode_unlock(fdip); 2575 hammer2_inode_drop(ip); 2576 hammer2_trans_done(tdip->pmp, HAMMER2_TRANS_SIDEQ); 2577 2578 /* 2579 * Issue the namecache update after unlocking all the internal 2580 * hammer2 structures, otherwise we might deadlock. 2581 * 2582 * WARNING! The target namespace must be updated atomically, 2583 * and we depend on cache_rename() to handle that for 2584 * us. Do not do a separate cache_unlink() because 2585 * that leaves a small window of opportunity for other 2586 * threads to allocate the target namespace before we 2587 * manage to complete our rename. 2588 * 2589 * WARNING! cache_rename() (and cache_unlink()) will properly 2590 * set VREF_FINALIZE on any attached vnode. Do not 2591 * call cache_setunresolved() manually before-hand as 2592 * this will prevent the flag from being set later via 2593 * cache_rename(). If VREF_FINALIZE is not properly set 2594 * and the inode is no longer in the topology, related 2595 * chains can remain dirty indefinitely. 2596 */ 2597 if (error == 0 && tip) { 2598 /*cache_unlink(ap->a_tnch); see above */ 2599 /*cache_setunresolved(ap->a_tnch); see above */ 2600 } 2601 if (error == 0) { 2602 cache_rename(ap->a_fnch, ap->a_tnch); 2603 hammer2_knote(ap->a_fdvp, NOTE_WRITE); 2604 hammer2_knote(ap->a_tdvp, NOTE_WRITE); 2605 hammer2_knote(fncp->nc_vp, NOTE_RENAME); 2606 } 2607 if (vprecycle) 2608 hammer2_inode_vprecycle(vprecycle); 2609 2610 return (error); 2611 #endif 2612 return (EOPNOTSUPP); 2613 } 2614 2615 /* 2616 * hammer2_vop_ioctl { vp, command, data, fflag, cred } 2617 */ 2618 static 2619 int 2620 hammer2_vop_ioctl(struct vop_ioctl_args *ap) 2621 { 2622 #if 0 2623 hammer2_inode_t *ip; 2624 int error; 2625 2626 ip = VTOI(ap->a_vp); 2627 2628 error = hammer2_ioctl(ip, ap->a_command, (void *)ap->a_data, 2629 ap->a_fflag, ap->a_cred); 2630 return (error); 2631 #endif 2632 return (EOPNOTSUPP); 2633 } 2634 2635 static 2636 int 2637 hammer2_vop_mountctl(struct vop_mountctl_args *ap) 2638 { 2639 #if 0 2640 struct mount *mp; 2641 hammer2_pfs_t *pmp; 2642 int rc; 2643 2644 switch (ap->a_op) { 2645 case (MOUNTCTL_SET_EXPORT): 2646 mp = ap->a_head.a_ops->head.vv_mount; 2647 pmp = MPTOPMP(mp); 2648 2649 if (ap->a_ctllen != sizeof(struct export_args)) 2650 rc = (EINVAL); 2651 else 2652 rc = vfs_export(mp, &pmp->export, 2653 (const struct export_args *)ap->a_ctl); 2654 break; 2655 default: 2656 rc = vop_stdmountctl(ap); 2657 break; 2658 } 2659 return (rc); 2660 #endif 2661 return (EOPNOTSUPP); 2662 } 2663 2664 /* 2665 * KQFILTER 2666 */ 2667 /* 2668 static void filt_hammer2detach(struct knote *kn); 2669 static int filt_hammer2read(struct knote *kn, long hint); 2670 static int filt_hammer2write(struct knote *kn, long hint); 2671 static int filt_hammer2vnode(struct knote *kn, long hint); 2672 2673 static struct filterops hammer2read_filtops = 2674 { FILTEROP_ISFD | FILTEROP_MPSAFE, 2675 NULL, filt_hammer2detach, filt_hammer2read }; 2676 static struct filterops hammer2write_filtops = 2677 { FILTEROP_ISFD | FILTEROP_MPSAFE, 2678 NULL, filt_hammer2detach, filt_hammer2write }; 2679 static struct filterops hammer2vnode_filtops = 2680 { FILTEROP_ISFD | FILTEROP_MPSAFE, 2681 NULL, filt_hammer2detach, filt_hammer2vnode }; 2682 */ 2683 2684 static 2685 int 2686 hammer2_vop_kqfilter(struct vop_kqfilter_args *ap) 2687 { 2688 #if 0 2689 struct vnode *vp = ap->a_vp; 2690 struct knote *kn = ap->a_kn; 2691 2692 switch (kn->kn_filter) { 2693 case EVFILT_READ: 2694 kn->kn_fop = &hammer2read_filtops; 2695 break; 2696 case EVFILT_WRITE: 2697 kn->kn_fop = &hammer2write_filtops; 2698 break; 2699 case EVFILT_VNODE: 2700 kn->kn_fop = &hammer2vnode_filtops; 2701 break; 2702 default: 2703 return (EOPNOTSUPP); 2704 } 2705 2706 kn->kn_hook = (caddr_t)vp; 2707 2708 knote_insert(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn); 2709 2710 return(0); 2711 #endif 2712 return (EOPNOTSUPP); 2713 } 2714 2715 #if 0 2716 static void 2717 filt_hammer2detach(struct knote *kn) 2718 { 2719 struct vnode *vp = (void *)kn->kn_hook; 2720 2721 knote_remove(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn); 2722 } 2723 2724 static int 2725 filt_hammer2read(struct knote *kn, long hint) 2726 { 2727 struct vnode *vp = (void *)kn->kn_hook; 2728 hammer2_inode_t *ip = VTOI(vp); 2729 off_t off; 2730 2731 if (hint == NOTE_REVOKE) { 2732 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT); 2733 return(1); 2734 } 2735 off = ip->meta.size - kn->kn_fp->f_offset; 2736 kn->kn_data = (off < INTPTR_MAX) ? off : INTPTR_MAX; 2737 if (kn->kn_sfflags & NOTE_OLDAPI) 2738 return(1); 2739 return (kn->kn_data != 0); 2740 } 2741 2742 2743 static int 2744 filt_hammer2write(struct knote *kn, long hint) 2745 { 2746 if (hint == NOTE_REVOKE) 2747 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT); 2748 kn->kn_data = 0; 2749 return (1); 2750 } 2751 2752 static int 2753 filt_hammer2vnode(struct knote *kn, long hint) 2754 { 2755 if (kn->kn_sfflags & hint) 2756 kn->kn_fflags |= hint; 2757 if (hint == NOTE_REVOKE) { 2758 kn->kn_flags |= (EV_EOF | EV_NODATA); 2759 return (1); 2760 } 2761 return (kn->kn_fflags != 0); 2762 } 2763 #endif 2764 2765 /* 2766 * FIFO VOPS 2767 */ 2768 static 2769 int 2770 hammer2_vop_markatime(struct vop_markatime_args *ap) 2771 { 2772 #if 0 2773 hammer2_inode_t *ip; 2774 struct vnode *vp; 2775 2776 vp = ap->a_vp; 2777 ip = VTOI(vp); 2778 2779 if (ip->pmp->ronly || (ip->pmp->flags & HAMMER2_PMPF_EMERG)) 2780 return (EROFS); 2781 return(0); 2782 #endif 2783 return (EOPNOTSUPP); 2784 } 2785 2786 static 2787 int 2788 hammer2_vop_fifokqfilter(struct vop_kqfilter_args *ap) 2789 { 2790 #if 0 2791 int error; 2792 2793 error = VOCALL(&fifo_vnode_vops, &ap->a_head); 2794 if (error) 2795 error = hammer2_vop_kqfilter(ap); 2796 return(error); 2797 #endif 2798 return (EOPNOTSUPP); 2799 } 2800 2801 /* 2802 * VOPS vector 2803 */ 2804 struct vop_ops hammer2_vnode_vops = { 2805 .vop_default = vop_defaultop, 2806 .vop_fsync = hammer2_vop_fsync, 2807 .vop_getpages = vop_stdgetpages, 2808 .vop_putpages = vop_stdputpages, 2809 .vop_access = hammer2_vop_access, 2810 .vop_advlock = hammer2_vop_advlock, 2811 .vop_close = hammer2_vop_close, 2812 .vop_nlink = hammer2_vop_nlink, 2813 .vop_ncreate = hammer2_vop_ncreate, 2814 .vop_nsymlink = hammer2_vop_nsymlink, 2815 .vop_nremove = hammer2_vop_nremove, 2816 .vop_nrmdir = hammer2_vop_nrmdir, 2817 .vop_nrename = hammer2_vop_nrename, 2818 .vop_getattr = hammer2_vop_getattr, 2819 .vop_getattr_lite = hammer2_vop_getattr_lite, 2820 .vop_setattr = hammer2_vop_setattr, 2821 .vop_readdir = hammer2_vop_readdir, 2822 .vop_readlink = hammer2_vop_readlink, 2823 .vop_read = hammer2_vop_read, 2824 .vop_write = hammer2_vop_write, 2825 .vop_open = hammer2_vop_open, 2826 .vop_inactive = hammer2_vop_inactive, 2827 .vop_reclaim = hammer2_vop_reclaim, 2828 .vop_nresolve = hammer2_vop_nresolve, 2829 .vop_nlookupdotdot = hammer2_vop_nlookupdotdot, 2830 .vop_nmkdir = hammer2_vop_nmkdir, 2831 .vop_nmknod = hammer2_vop_nmknod, 2832 .vop_ioctl = hammer2_vop_ioctl, 2833 .vop_mountctl = hammer2_vop_mountctl, 2834 .vop_bmap = hammer2_vop_bmap, 2835 .vop_strategy = hammer2_vop_strategy, 2836 .vop_kqfilter = hammer2_vop_kqfilter 2837 }; 2838 2839 struct vop_ops hammer2_spec_vops = { 2840 .vop_default = vop_defaultop, 2841 .vop_fsync = hammer2_vop_fsync, 2842 .vop_read = vop_stdnoread, 2843 .vop_write = vop_stdnowrite, 2844 .vop_access = hammer2_vop_access, 2845 .vop_close = hammer2_vop_close, 2846 .vop_markatime = hammer2_vop_markatime, 2847 .vop_getattr = hammer2_vop_getattr, 2848 .vop_inactive = hammer2_vop_inactive, 2849 .vop_reclaim = hammer2_vop_reclaim, 2850 .vop_setattr = hammer2_vop_setattr 2851 }; 2852 2853 struct vop_ops hammer2_fifo_vops = { 2854 .vop_default = fifo_vnoperate, 2855 .vop_fsync = hammer2_vop_fsync, 2856 #if 0 2857 .vop_read = hammer2_vop_fiforead, 2858 .vop_write = hammer2_vop_fifowrite, 2859 #endif 2860 .vop_access = hammer2_vop_access, 2861 #if 0 2862 .vop_close = hammer2_vop_fifoclose, 2863 #endif 2864 .vop_markatime = hammer2_vop_markatime, 2865 .vop_getattr = hammer2_vop_getattr, 2866 .vop_inactive = hammer2_vop_inactive, 2867 .vop_reclaim = hammer2_vop_reclaim, 2868 .vop_setattr = hammer2_vop_setattr, 2869 .vop_kqfilter = hammer2_vop_fifokqfilter 2870 }; 2871 2872