1 /* 2 * Copyright (c) 2011-2015 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@dragonflybsd.org> 6 * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org> 7 * by Daniel Flores (GSOC 2013 - mentored by Matthew Dillon, compression) 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 3. Neither the name of The DragonFly Project nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific, prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 26 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 27 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 29 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 31 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 33 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 /* 37 * Kernel Filesystem interface 38 * 39 * NOTE! local ipdata pointers must be reloaded on any modifying operation 40 * to the inode as its underlying chain may have changed. 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/fcntl.h> 47 #include <sys/buf.h> 48 #include <sys/proc.h> 49 #include <sys/namei.h> 50 #include <sys/mount.h> 51 #include <sys/vnode.h> 52 #include <sys/mountctl.h> 53 #include <sys/dirent.h> 54 #include <sys/uio.h> 55 #include <sys/objcache.h> 56 #include <sys/event.h> 57 #include <sys/file.h> 58 #include <vfs/fifofs/fifo.h> 59 60 #include "hammer2.h" 61 62 static int hammer2_read_file(hammer2_inode_t *ip, struct uio *uio, 63 int seqcount); 64 static int hammer2_write_file(hammer2_inode_t *ip, struct uio *uio, 65 int ioflag, int seqcount); 66 static void hammer2_extend_file(hammer2_inode_t *ip, hammer2_key_t nsize); 67 static void hammer2_truncate_file(hammer2_inode_t *ip, hammer2_key_t nsize); 68 69 struct objcache *cache_xops; 70 71 static __inline 72 void 73 hammer2_knote(struct vnode *vp, int flags) 74 { 75 if (flags) 76 KNOTE(&vp->v_pollinfo.vpi_kqinfo.ki_note, flags); 77 } 78 79 /* 80 * Last reference to a vnode is going away but it is still cached. 81 */ 82 static 83 int 84 hammer2_vop_inactive(struct vop_inactive_args *ap) 85 { 86 hammer2_inode_t *ip; 87 struct vnode *vp; 88 89 LOCKSTART; 90 vp = ap->a_vp; 91 ip = VTOI(vp); 92 93 /* 94 * Degenerate case 95 */ 96 if (ip == NULL) { 97 vrecycle(vp); 98 LOCKSTOP; 99 return (0); 100 } 101 102 /* 103 * Check for deleted inodes and recycle immediately on the last 104 * release. Be sure to destroy any left-over buffer cache buffers 105 * so we do not waste time trying to flush them. 106 * 107 * Note that deleting the file block chains under the inode chain 108 * would just be a waste of energy, so don't do it. 109 * 110 * WARNING: nvtruncbuf() can only be safely called without the inode 111 * lock held due to the way our write thread works. 112 */ 113 if (ip->flags & HAMMER2_INODE_ISUNLINKED) { 114 hammer2_key_t lbase; 115 int nblksize; 116 117 /* 118 * Detect updates to the embedded data which may be 119 * synchronized by the strategy code. Simply mark the 120 * inode modified so it gets picked up by our normal flush. 121 */ 122 nblksize = hammer2_calc_logical(ip, 0, &lbase, NULL); 123 nvtruncbuf(vp, 0, nblksize, 0, 0); 124 vrecycle(vp); 125 } 126 LOCKSTOP; 127 return (0); 128 } 129 130 /* 131 * Reclaim a vnode so that it can be reused; after the inode is 132 * disassociated, the filesystem must manage it alone. 133 */ 134 static 135 int 136 hammer2_vop_reclaim(struct vop_reclaim_args *ap) 137 { 138 hammer2_inode_t *ip; 139 hammer2_pfs_t *pmp; 140 struct vnode *vp; 141 142 LOCKSTART; 143 vp = ap->a_vp; 144 ip = VTOI(vp); 145 if (ip == NULL) { 146 LOCKSTOP; 147 return(0); 148 } 149 pmp = ip->pmp; 150 151 /* 152 * The final close of a deleted file or directory marks it for 153 * destruction. The DELETED flag allows the flusher to shortcut 154 * any modified blocks still unflushed (that is, just ignore them). 155 * 156 * HAMMER2 usually does not try to optimize the freemap by returning 157 * deleted blocks to it as it does not usually know how many snapshots 158 * might be referencing portions of the file/dir. 159 */ 160 vp->v_data = NULL; 161 ip->vp = NULL; 162 163 /* 164 * NOTE! We do not attempt to flush chains here, flushing is 165 * really fragile and could also deadlock. 166 */ 167 vclrisdirty(vp); 168 169 /* 170 * An unlinked inode may have been relinked to the ihidden directory. 171 * This occurs if the inode was unlinked while open. Reclamation of 172 * these inodes requires processing we cannot safely do here so add 173 * the inode to the sideq in that situation. 174 * 175 * A modified inode may require chain synchronization which will no 176 * longer be driven by a sync or fsync without the vnode, also use 177 * the sideq for that. 178 * 179 * A reclaim can occur at any time so we cannot safely start a 180 * transaction to handle reclamation of unlinked files. Instead, 181 * the ip is left with a reference and placed on a linked list and 182 * handled later on. 183 */ 184 if ((ip->flags & (HAMMER2_INODE_ISUNLINKED | 185 HAMMER2_INODE_MODIFIED | 186 HAMMER2_INODE_RESIZED)) && 187 (ip->flags & HAMMER2_INODE_ISDELETED) == 0) { 188 hammer2_inode_sideq_t *ipul; 189 190 ipul = kmalloc(sizeof(*ipul), pmp->minode, M_WAITOK | M_ZERO); 191 ipul->ip = ip; 192 193 hammer2_spin_ex(&pmp->list_spin); 194 if ((ip->flags & HAMMER2_INODE_ONSIDEQ) == 0) { 195 /* ref -> sideq */ 196 atomic_set_int(&ip->flags, HAMMER2_INODE_ONSIDEQ); 197 TAILQ_INSERT_TAIL(&pmp->sideq, ipul, entry); 198 hammer2_spin_unex(&pmp->list_spin); 199 } else { 200 hammer2_spin_unex(&pmp->list_spin); 201 kfree(ipul, pmp->minode); 202 hammer2_inode_drop(ip); /* vp ref */ 203 } 204 /* retain ref from vp for ipul */ 205 } else { 206 hammer2_inode_drop(ip); /* vp ref */ 207 } 208 209 /* 210 * XXX handle background sync when ip dirty, kernel will no longer 211 * notify us regarding this inode because there is no longer a 212 * vnode attached to it. 213 */ 214 215 LOCKSTOP; 216 return (0); 217 } 218 219 static 220 int 221 hammer2_vop_fsync(struct vop_fsync_args *ap) 222 { 223 hammer2_inode_t *ip; 224 struct vnode *vp; 225 226 LOCKSTART; 227 vp = ap->a_vp; 228 ip = VTOI(vp); 229 230 #if 0 231 /* XXX can't do this yet */ 232 hammer2_trans_init(ip->pmp, HAMMER2_TRANS_ISFLUSH); 233 vfsync(vp, ap->a_waitfor, 1, NULL, NULL); 234 #endif 235 hammer2_trans_init(ip->pmp, 0); 236 vfsync(vp, ap->a_waitfor, 1, NULL, NULL); 237 238 /* 239 * Calling chain_flush here creates a lot of duplicative 240 * COW operations due to non-optimal vnode ordering. 241 * 242 * Only do it for an actual fsync() syscall. The other forms 243 * which call this function will eventually call chain_flush 244 * on the volume root as a catch-all, which is far more optimal. 245 */ 246 hammer2_inode_lock(ip, 0); 247 if (ip->flags & HAMMER2_INODE_MODIFIED) 248 hammer2_inode_chain_sync(ip); 249 hammer2_inode_unlock(ip); 250 hammer2_trans_done(ip->pmp); 251 252 LOCKSTOP; 253 return (0); 254 } 255 256 static 257 int 258 hammer2_vop_access(struct vop_access_args *ap) 259 { 260 hammer2_inode_t *ip = VTOI(ap->a_vp); 261 uid_t uid; 262 gid_t gid; 263 int error; 264 265 LOCKSTART; 266 hammer2_inode_lock(ip, HAMMER2_RESOLVE_SHARED); 267 uid = hammer2_to_unix_xid(&ip->meta.uid); 268 gid = hammer2_to_unix_xid(&ip->meta.gid); 269 error = vop_helper_access(ap, uid, gid, ip->meta.mode, ip->meta.uflags); 270 hammer2_inode_unlock(ip); 271 272 LOCKSTOP; 273 return (error); 274 } 275 276 static 277 int 278 hammer2_vop_getattr(struct vop_getattr_args *ap) 279 { 280 hammer2_pfs_t *pmp; 281 hammer2_inode_t *ip; 282 struct vnode *vp; 283 struct vattr *vap; 284 hammer2_chain_t *chain; 285 int i; 286 287 LOCKSTART; 288 vp = ap->a_vp; 289 vap = ap->a_vap; 290 291 ip = VTOI(vp); 292 pmp = ip->pmp; 293 294 hammer2_inode_lock(ip, HAMMER2_RESOLVE_SHARED); 295 296 vap->va_fsid = pmp->mp->mnt_stat.f_fsid.val[0]; 297 vap->va_fileid = ip->meta.inum; 298 vap->va_mode = ip->meta.mode; 299 vap->va_nlink = ip->meta.nlinks; 300 vap->va_uid = hammer2_to_unix_xid(&ip->meta.uid); 301 vap->va_gid = hammer2_to_unix_xid(&ip->meta.gid); 302 vap->va_rmajor = 0; 303 vap->va_rminor = 0; 304 vap->va_size = ip->meta.size; /* protected by shared lock */ 305 vap->va_blocksize = HAMMER2_PBUFSIZE; 306 vap->va_flags = ip->meta.uflags; 307 hammer2_time_to_timespec(ip->meta.ctime, &vap->va_ctime); 308 hammer2_time_to_timespec(ip->meta.mtime, &vap->va_mtime); 309 hammer2_time_to_timespec(ip->meta.mtime, &vap->va_atime); 310 vap->va_gen = 1; 311 vap->va_bytes = 0; 312 if (ip->meta.type == HAMMER2_OBJTYPE_DIRECTORY) { 313 /* 314 * Can't really calculate directory use sans the files under 315 * it, just assume one block for now. 316 */ 317 vap->va_bytes += HAMMER2_INODE_BYTES; 318 } else { 319 for (i = 0; i < ip->cluster.nchains; ++i) { 320 if ((chain = ip->cluster.array[i].chain) != NULL) { 321 if (vap->va_bytes < chain->bref.data_count) 322 vap->va_bytes = chain->bref.data_count; 323 } 324 } 325 } 326 vap->va_type = hammer2_get_vtype(ip->meta.type); 327 vap->va_filerev = 0; 328 vap->va_uid_uuid = ip->meta.uid; 329 vap->va_gid_uuid = ip->meta.gid; 330 vap->va_vaflags = VA_UID_UUID_VALID | VA_GID_UUID_VALID | 331 VA_FSID_UUID_VALID; 332 333 hammer2_inode_unlock(ip); 334 335 LOCKSTOP; 336 return (0); 337 } 338 339 static 340 int 341 hammer2_vop_setattr(struct vop_setattr_args *ap) 342 { 343 hammer2_inode_t *ip; 344 struct vnode *vp; 345 struct vattr *vap; 346 int error; 347 int kflags = 0; 348 uint64_t ctime; 349 350 LOCKSTART; 351 vp = ap->a_vp; 352 vap = ap->a_vap; 353 hammer2_update_time(&ctime); 354 355 ip = VTOI(vp); 356 357 if (ip->pmp->ronly) { 358 LOCKSTOP; 359 return(EROFS); 360 } 361 362 hammer2_pfs_memory_wait(ip->pmp); 363 hammer2_trans_init(ip->pmp, 0); 364 hammer2_inode_lock(ip, 0); 365 error = 0; 366 367 if (vap->va_flags != VNOVAL) { 368 u_int32_t flags; 369 370 flags = ip->meta.uflags; 371 error = vop_helper_setattr_flags(&flags, vap->va_flags, 372 hammer2_to_unix_xid(&ip->meta.uid), 373 ap->a_cred); 374 if (error == 0) { 375 if (ip->meta.uflags != flags) { 376 hammer2_inode_modify(ip); 377 ip->meta.uflags = flags; 378 ip->meta.ctime = ctime; 379 kflags |= NOTE_ATTRIB; 380 } 381 if (ip->meta.uflags & (IMMUTABLE | APPEND)) { 382 error = 0; 383 goto done; 384 } 385 } 386 goto done; 387 } 388 if (ip->meta.uflags & (IMMUTABLE | APPEND)) { 389 error = EPERM; 390 goto done; 391 } 392 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) { 393 mode_t cur_mode = ip->meta.mode; 394 uid_t cur_uid = hammer2_to_unix_xid(&ip->meta.uid); 395 gid_t cur_gid = hammer2_to_unix_xid(&ip->meta.gid); 396 uuid_t uuid_uid; 397 uuid_t uuid_gid; 398 399 error = vop_helper_chown(ap->a_vp, vap->va_uid, vap->va_gid, 400 ap->a_cred, 401 &cur_uid, &cur_gid, &cur_mode); 402 if (error == 0) { 403 hammer2_guid_to_uuid(&uuid_uid, cur_uid); 404 hammer2_guid_to_uuid(&uuid_gid, cur_gid); 405 if (bcmp(&uuid_uid, &ip->meta.uid, sizeof(uuid_uid)) || 406 bcmp(&uuid_gid, &ip->meta.gid, sizeof(uuid_gid)) || 407 ip->meta.mode != cur_mode 408 ) { 409 hammer2_inode_modify(ip); 410 ip->meta.uid = uuid_uid; 411 ip->meta.gid = uuid_gid; 412 ip->meta.mode = cur_mode; 413 ip->meta.ctime = ctime; 414 } 415 kflags |= NOTE_ATTRIB; 416 } 417 } 418 419 /* 420 * Resize the file 421 */ 422 if (vap->va_size != VNOVAL && ip->meta.size != vap->va_size) { 423 switch(vp->v_type) { 424 case VREG: 425 if (vap->va_size == ip->meta.size) 426 break; 427 if (vap->va_size < ip->meta.size) { 428 hammer2_truncate_file(ip, vap->va_size); 429 } else { 430 hammer2_extend_file(ip, vap->va_size); 431 } 432 hammer2_inode_modify(ip); 433 ip->meta.mtime = ctime; 434 break; 435 default: 436 error = EINVAL; 437 goto done; 438 } 439 } 440 #if 0 441 /* atime not supported */ 442 if (vap->va_atime.tv_sec != VNOVAL) { 443 hammer2_inode_modify(ip); 444 ip->meta.atime = hammer2_timespec_to_time(&vap->va_atime); 445 kflags |= NOTE_ATTRIB; 446 } 447 #endif 448 if (vap->va_mode != (mode_t)VNOVAL) { 449 mode_t cur_mode = ip->meta.mode; 450 uid_t cur_uid = hammer2_to_unix_xid(&ip->meta.uid); 451 gid_t cur_gid = hammer2_to_unix_xid(&ip->meta.gid); 452 453 error = vop_helper_chmod(ap->a_vp, vap->va_mode, ap->a_cred, 454 cur_uid, cur_gid, &cur_mode); 455 if (error == 0 && ip->meta.mode != cur_mode) { 456 hammer2_inode_modify(ip); 457 ip->meta.mode = cur_mode; 458 ip->meta.ctime = ctime; 459 kflags |= NOTE_ATTRIB; 460 } 461 } 462 463 if (vap->va_mtime.tv_sec != VNOVAL) { 464 hammer2_inode_modify(ip); 465 ip->meta.mtime = hammer2_timespec_to_time(&vap->va_mtime); 466 kflags |= NOTE_ATTRIB; 467 } 468 469 done: 470 /* 471 * If a truncation occurred we must call inode_fsync() now in order 472 * to trim the related data chains, otherwise a later expansion can 473 * cause havoc. 474 * 475 * If an extend occured that changed the DIRECTDATA state, we must 476 * call inode_fsync now in order to prepare the inode's indirect 477 * block table. 478 */ 479 if (ip->flags & HAMMER2_INODE_RESIZED) 480 hammer2_inode_chain_sync(ip); 481 482 /* 483 * Cleanup. 484 */ 485 hammer2_inode_unlock(ip); 486 hammer2_trans_done(ip->pmp); 487 hammer2_knote(ip->vp, kflags); 488 489 LOCKSTOP; 490 return (error); 491 } 492 493 static 494 int 495 hammer2_vop_readdir(struct vop_readdir_args *ap) 496 { 497 hammer2_xop_readdir_t *xop; 498 hammer2_blockref_t bref; 499 hammer2_inode_t *ip; 500 hammer2_tid_t inum; 501 hammer2_key_t lkey; 502 struct uio *uio; 503 off_t *cookies; 504 off_t saveoff; 505 int cookie_index; 506 int ncookies; 507 int error; 508 int eofflag; 509 int dtype; 510 int r; 511 512 LOCKSTART; 513 ip = VTOI(ap->a_vp); 514 uio = ap->a_uio; 515 saveoff = uio->uio_offset; 516 eofflag = 0; 517 error = 0; 518 519 /* 520 * Setup cookies directory entry cookies if requested 521 */ 522 if (ap->a_ncookies) { 523 ncookies = uio->uio_resid / 16 + 1; 524 if (ncookies > 1024) 525 ncookies = 1024; 526 cookies = kmalloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 527 } else { 528 ncookies = -1; 529 cookies = NULL; 530 } 531 cookie_index = 0; 532 533 hammer2_inode_lock(ip, HAMMER2_RESOLVE_SHARED); 534 535 /* 536 * Handle artificial entries. To ensure that only positive 64 bit 537 * quantities are returned to userland we always strip off bit 63. 538 * The hash code is designed such that codes 0x0000-0x7FFF are not 539 * used, allowing us to use these codes for articial entries. 540 * 541 * Entry 0 is used for '.' and entry 1 is used for '..'. Do not 542 * allow '..' to cross the mount point into (e.g.) the super-root. 543 */ 544 if (saveoff == 0) { 545 inum = ip->meta.inum & HAMMER2_DIRHASH_USERMSK; 546 r = vop_write_dirent(&error, uio, inum, DT_DIR, 1, "."); 547 if (r) 548 goto done; 549 if (cookies) 550 cookies[cookie_index] = saveoff; 551 ++saveoff; 552 ++cookie_index; 553 if (cookie_index == ncookies) 554 goto done; 555 } 556 557 if (saveoff == 1) { 558 /* 559 * Be careful with lockorder when accessing ".." 560 * 561 * (ip is the current dir. xip is the parent dir). 562 */ 563 inum = ip->meta.inum & HAMMER2_DIRHASH_USERMSK; 564 if (ip->pip && ip != ip->pmp->iroot) 565 inum = ip->pip->meta.inum & HAMMER2_DIRHASH_USERMSK; 566 r = vop_write_dirent(&error, uio, inum, DT_DIR, 2, ".."); 567 if (r) 568 goto done; 569 if (cookies) 570 cookies[cookie_index] = saveoff; 571 ++saveoff; 572 ++cookie_index; 573 if (cookie_index == ncookies) 574 goto done; 575 } 576 577 lkey = saveoff | HAMMER2_DIRHASH_VISIBLE; 578 if (hammer2_debug & 0x0020) 579 kprintf("readdir: lkey %016jx\n", lkey); 580 if (error) 581 goto done; 582 583 /* 584 * Use XOP for cluster scan. 585 * 586 * parent is the inode cluster, already locked for us. Don't 587 * double lock shared locks as this will screw up upgrades. 588 */ 589 xop = hammer2_xop_alloc(ip, 0); 590 xop->lkey = lkey; 591 hammer2_xop_start(&xop->head, hammer2_xop_readdir); 592 593 for (;;) { 594 const hammer2_inode_data_t *ripdata; 595 596 error = hammer2_xop_collect(&xop->head, 0); 597 if (error) 598 break; 599 if (cookie_index == ncookies) 600 break; 601 if (hammer2_debug & 0x0020) 602 kprintf("cluster chain %p %p\n", 603 xop->head.cluster.focus, 604 (xop->head.cluster.focus ? 605 xop->head.cluster.focus->data : (void *)-1)); 606 ripdata = &hammer2_cluster_rdata(&xop->head.cluster)->ipdata; 607 hammer2_cluster_bref(&xop->head.cluster, &bref); 608 if (bref.type == HAMMER2_BREF_TYPE_INODE) { 609 dtype = hammer2_get_dtype(ripdata); 610 saveoff = bref.key & HAMMER2_DIRHASH_USERMSK; 611 r = vop_write_dirent(&error, uio, 612 ripdata->meta.inum & 613 HAMMER2_DIRHASH_USERMSK, 614 dtype, 615 ripdata->meta.name_len, 616 ripdata->filename); 617 if (r) 618 break; 619 if (cookies) 620 cookies[cookie_index] = saveoff; 621 ++cookie_index; 622 } else { 623 /* XXX chain error */ 624 kprintf("bad chain type readdir %d\n", bref.type); 625 } 626 } 627 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP); 628 if (error == ENOENT) { 629 error = 0; 630 eofflag = 1; 631 saveoff = (hammer2_key_t)-1; 632 } else { 633 saveoff = bref.key & HAMMER2_DIRHASH_USERMSK; 634 } 635 done: 636 hammer2_inode_unlock(ip); 637 if (ap->a_eofflag) 638 *ap->a_eofflag = eofflag; 639 if (hammer2_debug & 0x0020) 640 kprintf("readdir: done at %016jx\n", saveoff); 641 uio->uio_offset = saveoff & ~HAMMER2_DIRHASH_VISIBLE; 642 if (error && cookie_index == 0) { 643 if (cookies) { 644 kfree(cookies, M_TEMP); 645 *ap->a_ncookies = 0; 646 *ap->a_cookies = NULL; 647 } 648 } else { 649 if (cookies) { 650 *ap->a_ncookies = cookie_index; 651 *ap->a_cookies = cookies; 652 } 653 } 654 LOCKSTOP; 655 return (error); 656 } 657 658 /* 659 * hammer2_vop_readlink { vp, uio, cred } 660 */ 661 static 662 int 663 hammer2_vop_readlink(struct vop_readlink_args *ap) 664 { 665 struct vnode *vp; 666 hammer2_inode_t *ip; 667 int error; 668 669 vp = ap->a_vp; 670 if (vp->v_type != VLNK) 671 return (EINVAL); 672 ip = VTOI(vp); 673 674 error = hammer2_read_file(ip, ap->a_uio, 0); 675 return (error); 676 } 677 678 static 679 int 680 hammer2_vop_read(struct vop_read_args *ap) 681 { 682 struct vnode *vp; 683 hammer2_inode_t *ip; 684 struct uio *uio; 685 int error; 686 int seqcount; 687 int bigread; 688 689 /* 690 * Read operations supported on this vnode? 691 */ 692 vp = ap->a_vp; 693 if (vp->v_type != VREG) 694 return (EINVAL); 695 696 /* 697 * Misc 698 */ 699 ip = VTOI(vp); 700 uio = ap->a_uio; 701 error = 0; 702 703 seqcount = ap->a_ioflag >> 16; 704 bigread = (uio->uio_resid > 100 * 1024 * 1024); 705 706 error = hammer2_read_file(ip, uio, seqcount); 707 return (error); 708 } 709 710 static 711 int 712 hammer2_vop_write(struct vop_write_args *ap) 713 { 714 hammer2_inode_t *ip; 715 thread_t td; 716 struct vnode *vp; 717 struct uio *uio; 718 int error; 719 int seqcount; 720 721 /* 722 * Read operations supported on this vnode? 723 */ 724 vp = ap->a_vp; 725 if (vp->v_type != VREG) 726 return (EINVAL); 727 728 /* 729 * Misc 730 */ 731 ip = VTOI(vp); 732 uio = ap->a_uio; 733 error = 0; 734 if (ip->pmp->ronly) { 735 return (EROFS); 736 } 737 738 seqcount = ap->a_ioflag >> 16; 739 740 /* 741 * Check resource limit 742 */ 743 if (uio->uio_resid > 0 && (td = uio->uio_td) != NULL && td->td_proc && 744 uio->uio_offset + uio->uio_resid > 745 td->td_proc->p_rlimit[RLIMIT_FSIZE].rlim_cur) { 746 lwpsignal(td->td_proc, td->td_lwp, SIGXFSZ); 747 return (EFBIG); 748 } 749 750 /* 751 * The transaction interlocks against flushes initiations 752 * (note: but will run concurrently with the actual flush). 753 */ 754 hammer2_trans_init(ip->pmp, 0); 755 error = hammer2_write_file(ip, uio, ap->a_ioflag, seqcount); 756 hammer2_trans_done(ip->pmp); 757 758 return (error); 759 } 760 761 /* 762 * Perform read operations on a file or symlink given an UNLOCKED 763 * inode and uio. 764 * 765 * The passed ip is not locked. 766 */ 767 static 768 int 769 hammer2_read_file(hammer2_inode_t *ip, struct uio *uio, int seqcount) 770 { 771 hammer2_off_t size; 772 struct buf *bp; 773 int error; 774 775 error = 0; 776 777 /* 778 * UIO read loop. 779 * 780 * WARNING! Assumes that the kernel interlocks size changes at the 781 * vnode level. 782 */ 783 hammer2_mtx_sh(&ip->lock); 784 size = ip->meta.size; 785 hammer2_mtx_unlock(&ip->lock); 786 787 while (uio->uio_resid > 0 && uio->uio_offset < size) { 788 hammer2_key_t lbase; 789 hammer2_key_t leof; 790 int lblksize; 791 int loff; 792 int n; 793 794 lblksize = hammer2_calc_logical(ip, uio->uio_offset, 795 &lbase, &leof); 796 797 error = cluster_read(ip->vp, leof, lbase, lblksize, 798 uio->uio_resid, seqcount * BKVASIZE, 799 &bp); 800 801 if (error) 802 break; 803 loff = (int)(uio->uio_offset - lbase); 804 n = lblksize - loff; 805 if (n > uio->uio_resid) 806 n = uio->uio_resid; 807 if (n > size - uio->uio_offset) 808 n = (int)(size - uio->uio_offset); 809 bp->b_flags |= B_AGE; 810 uiomove((char *)bp->b_data + loff, n, uio); 811 bqrelse(bp); 812 } 813 return (error); 814 } 815 816 /* 817 * Write to the file represented by the inode via the logical buffer cache. 818 * The inode may represent a regular file or a symlink. 819 * 820 * The inode must not be locked. 821 */ 822 static 823 int 824 hammer2_write_file(hammer2_inode_t *ip, struct uio *uio, 825 int ioflag, int seqcount) 826 { 827 hammer2_key_t old_eof; 828 hammer2_key_t new_eof; 829 struct buf *bp; 830 int kflags; 831 int error; 832 int modified; 833 834 /* 835 * Setup if append 836 * 837 * WARNING! Assumes that the kernel interlocks size changes at the 838 * vnode level. 839 */ 840 hammer2_mtx_ex(&ip->lock); 841 if (ioflag & IO_APPEND) 842 uio->uio_offset = ip->meta.size; 843 old_eof = ip->meta.size; 844 845 /* 846 * Extend the file if necessary. If the write fails at some point 847 * we will truncate it back down to cover as much as we were able 848 * to write. 849 * 850 * Doing this now makes it easier to calculate buffer sizes in 851 * the loop. 852 */ 853 kflags = 0; 854 error = 0; 855 modified = 0; 856 857 if (uio->uio_offset + uio->uio_resid > old_eof) { 858 new_eof = uio->uio_offset + uio->uio_resid; 859 modified = 1; 860 hammer2_extend_file(ip, new_eof); 861 kflags |= NOTE_EXTEND; 862 } else { 863 new_eof = old_eof; 864 } 865 hammer2_mtx_unlock(&ip->lock); 866 867 /* 868 * UIO write loop 869 */ 870 while (uio->uio_resid > 0) { 871 hammer2_key_t lbase; 872 int trivial; 873 int endofblk; 874 int lblksize; 875 int loff; 876 int n; 877 878 /* 879 * Don't allow the buffer build to blow out the buffer 880 * cache. 881 */ 882 if ((ioflag & IO_RECURSE) == 0) 883 bwillwrite(HAMMER2_PBUFSIZE); 884 885 /* 886 * This nominally tells us how much we can cluster and 887 * what the logical buffer size needs to be. Currently 888 * we don't try to cluster the write and just handle one 889 * block at a time. 890 */ 891 lblksize = hammer2_calc_logical(ip, uio->uio_offset, 892 &lbase, NULL); 893 loff = (int)(uio->uio_offset - lbase); 894 895 KKASSERT(lblksize <= 65536); 896 897 /* 898 * Calculate bytes to copy this transfer and whether the 899 * copy completely covers the buffer or not. 900 */ 901 trivial = 0; 902 n = lblksize - loff; 903 if (n > uio->uio_resid) { 904 n = uio->uio_resid; 905 if (loff == lbase && uio->uio_offset + n == new_eof) 906 trivial = 1; 907 endofblk = 0; 908 } else { 909 if (loff == 0) 910 trivial = 1; 911 endofblk = 1; 912 } 913 914 /* 915 * Get the buffer 916 */ 917 if (uio->uio_segflg == UIO_NOCOPY) { 918 /* 919 * Issuing a write with the same data backing the 920 * buffer. Instantiate the buffer to collect the 921 * backing vm pages, then read-in any missing bits. 922 * 923 * This case is used by vop_stdputpages(). 924 */ 925 bp = getblk(ip->vp, lbase, lblksize, GETBLK_BHEAVY, 0); 926 if ((bp->b_flags & B_CACHE) == 0) { 927 bqrelse(bp); 928 error = bread(ip->vp, lbase, lblksize, &bp); 929 } 930 } else if (trivial) { 931 /* 932 * Even though we are entirely overwriting the buffer 933 * we may still have to zero it out to avoid a 934 * mmap/write visibility issue. 935 */ 936 bp = getblk(ip->vp, lbase, lblksize, GETBLK_BHEAVY, 0); 937 if ((bp->b_flags & B_CACHE) == 0) 938 vfs_bio_clrbuf(bp); 939 } else { 940 /* 941 * Partial overwrite, read in any missing bits then 942 * replace the portion being written. 943 * 944 * (The strategy code will detect zero-fill physical 945 * blocks for this case). 946 */ 947 error = bread(ip->vp, lbase, lblksize, &bp); 948 if (error == 0) 949 bheavy(bp); 950 } 951 952 if (error) { 953 brelse(bp); 954 break; 955 } 956 957 /* 958 * Ok, copy the data in 959 */ 960 error = uiomove(bp->b_data + loff, n, uio); 961 kflags |= NOTE_WRITE; 962 modified = 1; 963 if (error) { 964 brelse(bp); 965 break; 966 } 967 968 /* 969 * WARNING: Pageout daemon will issue UIO_NOCOPY writes 970 * with IO_SYNC or IO_ASYNC set. These writes 971 * must be handled as the pageout daemon expects. 972 */ 973 if (ioflag & IO_SYNC) { 974 bwrite(bp); 975 } else if ((ioflag & IO_DIRECT) && endofblk) { 976 bawrite(bp); 977 } else if (ioflag & IO_ASYNC) { 978 bawrite(bp); 979 } else { 980 bdwrite(bp); 981 } 982 } 983 984 /* 985 * Cleanup. If we extended the file EOF but failed to write through 986 * the entire write is a failure and we have to back-up. 987 */ 988 if (error && new_eof != old_eof) { 989 hammer2_mtx_ex(&ip->lock); 990 hammer2_truncate_file(ip, old_eof); 991 if (ip->flags & HAMMER2_INODE_MODIFIED) 992 hammer2_inode_chain_sync(ip); 993 hammer2_mtx_unlock(&ip->lock); 994 } else if (modified) { 995 hammer2_mtx_ex(&ip->lock); 996 hammer2_inode_modify(ip); 997 hammer2_update_time(&ip->meta.mtime); 998 if (ip->flags & HAMMER2_INODE_MODIFIED) 999 hammer2_inode_chain_sync(ip); 1000 hammer2_mtx_unlock(&ip->lock); 1001 hammer2_knote(ip->vp, kflags); 1002 } 1003 hammer2_trans_assert_strategy(ip->pmp); 1004 1005 return error; 1006 } 1007 1008 /* 1009 * Truncate the size of a file. The inode must not be locked. 1010 * 1011 * We must unconditionally set HAMMER2_INODE_RESIZED to properly 1012 * ensure that any on-media data beyond the new file EOF has been destroyed. 1013 * 1014 * WARNING: nvtruncbuf() can only be safely called without the inode lock 1015 * held due to the way our write thread works. If the truncation 1016 * occurs in the middle of a buffer, nvtruncbuf() is responsible 1017 * for dirtying that buffer and zeroing out trailing bytes. 1018 * 1019 * WARNING! Assumes that the kernel interlocks size changes at the 1020 * vnode level. 1021 * 1022 * WARNING! Caller assumes responsibility for removing dead blocks 1023 * if INODE_RESIZED is set. 1024 */ 1025 static 1026 void 1027 hammer2_truncate_file(hammer2_inode_t *ip, hammer2_key_t nsize) 1028 { 1029 hammer2_key_t lbase; 1030 int nblksize; 1031 1032 LOCKSTART; 1033 hammer2_mtx_unlock(&ip->lock); 1034 if (ip->vp) { 1035 nblksize = hammer2_calc_logical(ip, nsize, &lbase, NULL); 1036 nvtruncbuf(ip->vp, nsize, 1037 nblksize, (int)nsize & (nblksize - 1), 1038 0); 1039 } 1040 hammer2_mtx_ex(&ip->lock); 1041 KKASSERT((ip->flags & HAMMER2_INODE_RESIZED) == 0); 1042 ip->osize = ip->meta.size; 1043 ip->meta.size = nsize; 1044 atomic_set_int(&ip->flags, HAMMER2_INODE_MODIFIED | 1045 HAMMER2_INODE_RESIZED); 1046 LOCKSTOP; 1047 } 1048 1049 /* 1050 * Extend the size of a file. The inode must not be locked. 1051 * 1052 * Even though the file size is changing, we do not have to set the 1053 * INODE_RESIZED bit unless the file size crosses the EMBEDDED_BYTES 1054 * boundary. When this occurs a hammer2_inode_chain_sync() is required 1055 * to prepare the inode cluster's indirect block table, otherwise 1056 * async execution of the strategy code will implode on us. 1057 * 1058 * WARNING! Assumes that the kernel interlocks size changes at the 1059 * vnode level. 1060 * 1061 * WARNING! Caller assumes responsibility for transitioning out 1062 * of the inode DIRECTDATA mode if INODE_RESIZED is set. 1063 */ 1064 static 1065 void 1066 hammer2_extend_file(hammer2_inode_t *ip, hammer2_key_t nsize) 1067 { 1068 hammer2_key_t lbase; 1069 hammer2_key_t osize; 1070 int oblksize; 1071 int nblksize; 1072 1073 LOCKSTART; 1074 1075 KKASSERT((ip->flags & HAMMER2_INODE_RESIZED) == 0); 1076 osize = ip->meta.size; 1077 ip->osize = osize; 1078 ip->meta.size = nsize; 1079 atomic_set_int(&ip->flags, HAMMER2_INODE_MODIFIED); 1080 1081 if (osize <= HAMMER2_EMBEDDED_BYTES && nsize > HAMMER2_EMBEDDED_BYTES) { 1082 atomic_set_int(&ip->flags, HAMMER2_INODE_RESIZED); 1083 hammer2_inode_chain_sync(ip); 1084 } 1085 1086 hammer2_mtx_unlock(&ip->lock); 1087 if (ip->vp) { 1088 oblksize = hammer2_calc_logical(ip, osize, &lbase, NULL); 1089 nblksize = hammer2_calc_logical(ip, nsize, &lbase, NULL); 1090 nvextendbuf(ip->vp, 1091 osize, nsize, 1092 oblksize, nblksize, 1093 -1, -1, 0); 1094 } 1095 hammer2_mtx_ex(&ip->lock); 1096 1097 LOCKSTOP; 1098 } 1099 1100 static 1101 int 1102 hammer2_vop_nresolve(struct vop_nresolve_args *ap) 1103 { 1104 hammer2_xop_nresolve_t *xop; 1105 hammer2_inode_t *ip; 1106 hammer2_inode_t *dip; 1107 struct namecache *ncp; 1108 struct vnode *vp; 1109 int error; 1110 1111 LOCKSTART; 1112 dip = VTOI(ap->a_dvp); 1113 xop = hammer2_xop_alloc(dip, 0); 1114 1115 ncp = ap->a_nch->ncp; 1116 hammer2_xop_setname(&xop->head, ncp->nc_name, ncp->nc_nlen); 1117 1118 /* 1119 * Note: In DragonFly the kernel handles '.' and '..'. 1120 */ 1121 hammer2_inode_lock(dip, HAMMER2_RESOLVE_SHARED); 1122 hammer2_xop_start(&xop->head, hammer2_xop_nresolve); 1123 1124 error = hammer2_xop_collect(&xop->head, 0); 1125 if (error) { 1126 ip = NULL; 1127 } else { 1128 ip = hammer2_inode_get(dip->pmp, dip, &xop->head.cluster, -1); 1129 } 1130 hammer2_inode_unlock(dip); 1131 1132 /* 1133 * Acquire the related vnode 1134 * 1135 * NOTE: For error processing, only ENOENT resolves the namecache 1136 * entry to NULL, otherwise we just return the error and 1137 * leave the namecache unresolved. 1138 * 1139 * NOTE: multiple hammer2_inode structures can be aliased to the 1140 * same chain element, for example for hardlinks. This 1141 * use case does not 'reattach' inode associations that 1142 * might already exist, but always allocates a new one. 1143 * 1144 * WARNING: inode structure is locked exclusively via inode_get 1145 * but chain was locked shared. inode_unlock() 1146 * will handle it properly. 1147 */ 1148 if (ip) { 1149 vp = hammer2_igetv(ip, &error); 1150 if (error == 0) { 1151 vn_unlock(vp); 1152 cache_setvp(ap->a_nch, vp); 1153 } else if (error == ENOENT) { 1154 cache_setvp(ap->a_nch, NULL); 1155 } 1156 hammer2_inode_unlock(ip); 1157 1158 /* 1159 * The vp should not be released until after we've disposed 1160 * of our locks, because it might cause vop_inactive() to 1161 * be called. 1162 */ 1163 if (vp) 1164 vrele(vp); 1165 } else { 1166 error = ENOENT; 1167 cache_setvp(ap->a_nch, NULL); 1168 } 1169 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP); 1170 KASSERT(error || ap->a_nch->ncp->nc_vp != NULL, 1171 ("resolve error %d/%p ap %p\n", 1172 error, ap->a_nch->ncp->nc_vp, ap)); 1173 LOCKSTOP; 1174 1175 return error; 1176 } 1177 1178 static 1179 int 1180 hammer2_vop_nlookupdotdot(struct vop_nlookupdotdot_args *ap) 1181 { 1182 hammer2_inode_t *dip; 1183 hammer2_inode_t *ip; 1184 int error; 1185 1186 LOCKSTART; 1187 dip = VTOI(ap->a_dvp); 1188 1189 if ((ip = dip->pip) == NULL) { 1190 *ap->a_vpp = NULL; 1191 LOCKSTOP; 1192 return ENOENT; 1193 } 1194 hammer2_inode_lock(ip, 0); 1195 *ap->a_vpp = hammer2_igetv(ip, &error); 1196 hammer2_inode_unlock(ip); 1197 1198 LOCKSTOP; 1199 return error; 1200 } 1201 1202 static 1203 int 1204 hammer2_vop_nmkdir(struct vop_nmkdir_args *ap) 1205 { 1206 hammer2_inode_t *dip; 1207 hammer2_inode_t *nip; 1208 struct namecache *ncp; 1209 const uint8_t *name; 1210 size_t name_len; 1211 int error; 1212 1213 LOCKSTART; 1214 dip = VTOI(ap->a_dvp); 1215 if (dip->pmp->ronly) { 1216 LOCKSTOP; 1217 return (EROFS); 1218 } 1219 1220 ncp = ap->a_nch->ncp; 1221 name = ncp->nc_name; 1222 name_len = ncp->nc_nlen; 1223 1224 hammer2_pfs_memory_wait(dip->pmp); 1225 hammer2_trans_init(dip->pmp, 0); 1226 nip = hammer2_inode_create(dip, ap->a_vap, ap->a_cred, 1227 name, name_len, 0, 1228 hammer2_trans_newinum(dip->pmp), 0, 0, 1229 0, &error); 1230 if (error) { 1231 KKASSERT(nip == NULL); 1232 *ap->a_vpp = NULL; 1233 } else { 1234 *ap->a_vpp = hammer2_igetv(nip, &error); 1235 hammer2_inode_unlock(nip); 1236 } 1237 hammer2_trans_done(dip->pmp); 1238 1239 if (error == 0) { 1240 cache_setunresolved(ap->a_nch); 1241 cache_setvp(ap->a_nch, *ap->a_vpp); 1242 } 1243 LOCKSTOP; 1244 return error; 1245 } 1246 1247 static 1248 int 1249 hammer2_vop_open(struct vop_open_args *ap) 1250 { 1251 return vop_stdopen(ap); 1252 } 1253 1254 /* 1255 * hammer2_vop_advlock { vp, id, op, fl, flags } 1256 */ 1257 static 1258 int 1259 hammer2_vop_advlock(struct vop_advlock_args *ap) 1260 { 1261 hammer2_inode_t *ip = VTOI(ap->a_vp); 1262 hammer2_off_t size; 1263 1264 size = ip->meta.size; 1265 return (lf_advlock(ap, &ip->advlock, size)); 1266 } 1267 1268 static 1269 int 1270 hammer2_vop_close(struct vop_close_args *ap) 1271 { 1272 return vop_stdclose(ap); 1273 } 1274 1275 /* 1276 * hammer2_vop_nlink { nch, dvp, vp, cred } 1277 * 1278 * Create a hardlink from (vp) to {dvp, nch}. 1279 */ 1280 static 1281 int 1282 hammer2_vop_nlink(struct vop_nlink_args *ap) 1283 { 1284 hammer2_xop_nlink_t *xop1; 1285 hammer2_inode_t *fdip; /* target directory to create link in */ 1286 hammer2_inode_t *tdip; /* target directory to create link in */ 1287 hammer2_inode_t *cdip; /* common parent directory */ 1288 hammer2_inode_t *ip; /* inode we are hardlinking to */ 1289 struct namecache *ncp; 1290 const uint8_t *name; 1291 size_t name_len; 1292 int error; 1293 1294 LOCKSTART; 1295 tdip = VTOI(ap->a_dvp); 1296 if (tdip->pmp->ronly) { 1297 LOCKSTOP; 1298 return (EROFS); 1299 } 1300 1301 ncp = ap->a_nch->ncp; 1302 name = ncp->nc_name; 1303 name_len = ncp->nc_nlen; 1304 1305 /* 1306 * ip represents the file being hardlinked. The file could be a 1307 * normal file or a hardlink target if it has already been hardlinked. 1308 * If ip is a hardlinked target then ip->pip represents the location 1309 * of the hardlinked target, NOT the location of the hardlink pointer. 1310 * 1311 * Bump nlinks and potentially also create or move the hardlink 1312 * target in the parent directory common to (ip) and (tdip). The 1313 * consolidation code can modify ip->cluster and ip->pip. The 1314 * returned cluster is locked. 1315 */ 1316 ip = VTOI(ap->a_vp); 1317 hammer2_pfs_memory_wait(ip->pmp); 1318 hammer2_trans_init(ip->pmp, 0); 1319 1320 /* 1321 * The common parent directory must be locked first to avoid deadlocks. 1322 * Also note that fdip and/or tdip might match cdip. 1323 */ 1324 fdip = ip->pip; 1325 cdip = hammer2_inode_common_parent(fdip, tdip); 1326 hammer2_inode_lock(cdip, 0); 1327 hammer2_inode_lock(fdip, 0); 1328 hammer2_inode_lock(tdip, 0); 1329 hammer2_inode_lock(ip, 0); 1330 error = 0; 1331 1332 /* 1333 * If ip is not a hardlink target we must convert it to a hardlink. 1334 * If fdip != cdip we must shift the inode to cdip. 1335 */ 1336 if (fdip != cdip || (ip->meta.name_key & HAMMER2_DIRHASH_VISIBLE)) { 1337 xop1 = hammer2_xop_alloc(fdip, HAMMER2_XOP_MODIFYING); 1338 hammer2_xop_setip2(&xop1->head, ip); 1339 hammer2_xop_setip3(&xop1->head, cdip); 1340 1341 hammer2_xop_start(&xop1->head, hammer2_xop_nlink); 1342 error = hammer2_xop_collect(&xop1->head, 0); 1343 hammer2_xop_retire(&xop1->head, HAMMER2_XOPMASK_VOP); 1344 if (error == ENOENT) 1345 error = 0; 1346 } 1347 1348 /* 1349 * Must synchronize original inode whos chains are now a hardlink 1350 * target. We must match what the backend XOP did to the 1351 * chains. 1352 */ 1353 if (error == 0 && (ip->meta.name_key & HAMMER2_DIRHASH_VISIBLE)) { 1354 hammer2_inode_modify(ip); 1355 ip->meta.name_key = ip->meta.inum; 1356 ip->meta.name_len = 18; /* "0x%016jx" */ 1357 } 1358 1359 /* 1360 * Create the hardlink target and bump nlinks. 1361 */ 1362 if (error == 0) { 1363 hammer2_inode_create(tdip, NULL, NULL, 1364 name, name_len, 0, 1365 ip->meta.inum, 1366 HAMMER2_OBJTYPE_HARDLINK, ip->meta.type, 1367 0, &error); 1368 hammer2_inode_modify(ip); 1369 ++ip->meta.nlinks; 1370 } 1371 if (error == 0) { 1372 cache_setunresolved(ap->a_nch); 1373 cache_setvp(ap->a_nch, ap->a_vp); 1374 } 1375 hammer2_inode_unlock(ip); 1376 hammer2_inode_unlock(tdip); 1377 hammer2_inode_unlock(fdip); 1378 hammer2_inode_unlock(cdip); 1379 hammer2_inode_drop(cdip); 1380 hammer2_trans_done(ip->pmp); 1381 1382 LOCKSTOP; 1383 return error; 1384 } 1385 1386 /* 1387 * hammer2_vop_ncreate { nch, dvp, vpp, cred, vap } 1388 * 1389 * The operating system has already ensured that the directory entry 1390 * does not exist and done all appropriate namespace locking. 1391 */ 1392 static 1393 int 1394 hammer2_vop_ncreate(struct vop_ncreate_args *ap) 1395 { 1396 hammer2_inode_t *dip; 1397 hammer2_inode_t *nip; 1398 struct namecache *ncp; 1399 const uint8_t *name; 1400 size_t name_len; 1401 int error; 1402 1403 LOCKSTART; 1404 dip = VTOI(ap->a_dvp); 1405 if (dip->pmp->ronly) { 1406 LOCKSTOP; 1407 return (EROFS); 1408 } 1409 1410 ncp = ap->a_nch->ncp; 1411 name = ncp->nc_name; 1412 name_len = ncp->nc_nlen; 1413 hammer2_pfs_memory_wait(dip->pmp); 1414 hammer2_trans_init(dip->pmp, 0); 1415 1416 nip = hammer2_inode_create(dip, ap->a_vap, ap->a_cred, 1417 name, name_len, 0, 1418 hammer2_trans_newinum(dip->pmp), 0, 0, 1419 0, &error); 1420 if (error) { 1421 KKASSERT(nip == NULL); 1422 *ap->a_vpp = NULL; 1423 } else { 1424 *ap->a_vpp = hammer2_igetv(nip, &error); 1425 hammer2_inode_unlock(nip); 1426 } 1427 hammer2_trans_done(dip->pmp); 1428 1429 if (error == 0) { 1430 cache_setunresolved(ap->a_nch); 1431 cache_setvp(ap->a_nch, *ap->a_vpp); 1432 } 1433 LOCKSTOP; 1434 return error; 1435 } 1436 1437 /* 1438 * Make a device node (typically a fifo) 1439 */ 1440 static 1441 int 1442 hammer2_vop_nmknod(struct vop_nmknod_args *ap) 1443 { 1444 hammer2_inode_t *dip; 1445 hammer2_inode_t *nip; 1446 struct namecache *ncp; 1447 const uint8_t *name; 1448 size_t name_len; 1449 int error; 1450 1451 LOCKSTART; 1452 dip = VTOI(ap->a_dvp); 1453 if (dip->pmp->ronly) { 1454 LOCKSTOP; 1455 return (EROFS); 1456 } 1457 1458 ncp = ap->a_nch->ncp; 1459 name = ncp->nc_name; 1460 name_len = ncp->nc_nlen; 1461 hammer2_pfs_memory_wait(dip->pmp); 1462 hammer2_trans_init(dip->pmp, 0); 1463 1464 nip = hammer2_inode_create(dip, ap->a_vap, ap->a_cred, 1465 name, name_len, 0, 1466 hammer2_trans_newinum(dip->pmp), 0, 0, 1467 0, &error); 1468 if (error) { 1469 KKASSERT(nip == NULL); 1470 *ap->a_vpp = NULL; 1471 } else { 1472 *ap->a_vpp = hammer2_igetv(nip, &error); 1473 hammer2_inode_unlock(nip); 1474 } 1475 hammer2_trans_done(dip->pmp); 1476 1477 if (error == 0) { 1478 cache_setunresolved(ap->a_nch); 1479 cache_setvp(ap->a_nch, *ap->a_vpp); 1480 } 1481 LOCKSTOP; 1482 return error; 1483 } 1484 1485 /* 1486 * hammer2_vop_nsymlink { nch, dvp, vpp, cred, vap, target } 1487 */ 1488 static 1489 int 1490 hammer2_vop_nsymlink(struct vop_nsymlink_args *ap) 1491 { 1492 hammer2_inode_t *dip; 1493 hammer2_inode_t *nip; 1494 struct namecache *ncp; 1495 const uint8_t *name; 1496 size_t name_len; 1497 int error; 1498 1499 dip = VTOI(ap->a_dvp); 1500 if (dip->pmp->ronly) 1501 return (EROFS); 1502 1503 ncp = ap->a_nch->ncp; 1504 name = ncp->nc_name; 1505 name_len = ncp->nc_nlen; 1506 hammer2_pfs_memory_wait(dip->pmp); 1507 hammer2_trans_init(dip->pmp, 0); 1508 1509 ap->a_vap->va_type = VLNK; /* enforce type */ 1510 1511 nip = hammer2_inode_create(dip, ap->a_vap, ap->a_cred, 1512 name, name_len, 0, 1513 hammer2_trans_newinum(dip->pmp), 0, 0, 1514 0, &error); 1515 if (error) { 1516 KKASSERT(nip == NULL); 1517 *ap->a_vpp = NULL; 1518 hammer2_trans_done(dip->pmp); 1519 return error; 1520 } 1521 *ap->a_vpp = hammer2_igetv(nip, &error); 1522 1523 /* 1524 * Build the softlink (~like file data) and finalize the namecache. 1525 */ 1526 if (error == 0) { 1527 size_t bytes; 1528 struct uio auio; 1529 struct iovec aiov; 1530 1531 bytes = strlen(ap->a_target); 1532 1533 hammer2_inode_unlock(nip); 1534 bzero(&auio, sizeof(auio)); 1535 bzero(&aiov, sizeof(aiov)); 1536 auio.uio_iov = &aiov; 1537 auio.uio_segflg = UIO_SYSSPACE; 1538 auio.uio_rw = UIO_WRITE; 1539 auio.uio_resid = bytes; 1540 auio.uio_iovcnt = 1; 1541 auio.uio_td = curthread; 1542 aiov.iov_base = ap->a_target; 1543 aiov.iov_len = bytes; 1544 error = hammer2_write_file(nip, &auio, IO_APPEND, 0); 1545 /* XXX handle error */ 1546 error = 0; 1547 } else { 1548 hammer2_inode_unlock(nip); 1549 } 1550 hammer2_trans_done(dip->pmp); 1551 1552 /* 1553 * Finalize namecache 1554 */ 1555 if (error == 0) { 1556 cache_setunresolved(ap->a_nch); 1557 cache_setvp(ap->a_nch, *ap->a_vpp); 1558 /* hammer2_knote(ap->a_dvp, NOTE_WRITE); */ 1559 } 1560 return error; 1561 } 1562 1563 /* 1564 * hammer2_vop_nremove { nch, dvp, cred } 1565 */ 1566 static 1567 int 1568 hammer2_vop_nremove(struct vop_nremove_args *ap) 1569 { 1570 hammer2_xop_unlink_t *xop; 1571 hammer2_inode_t *dip; 1572 hammer2_inode_t *ip; 1573 struct namecache *ncp; 1574 int error; 1575 int isopen; 1576 1577 LOCKSTART; 1578 dip = VTOI(ap->a_dvp); 1579 if (dip->pmp->ronly) { 1580 LOCKSTOP; 1581 return(EROFS); 1582 } 1583 1584 ncp = ap->a_nch->ncp; 1585 1586 hammer2_pfs_memory_wait(dip->pmp); 1587 hammer2_trans_init(dip->pmp, 0); 1588 hammer2_inode_lock(dip, 0); 1589 1590 /* 1591 * The unlink XOP unlinks the path from the directory and 1592 * locates and returns the cluster associated with the real inode. 1593 * We have to handle nlinks here on the frontend. 1594 */ 1595 xop = hammer2_xop_alloc(dip, HAMMER2_XOP_MODIFYING); 1596 hammer2_xop_setname(&xop->head, ncp->nc_name, ncp->nc_nlen); 1597 isopen = cache_isopen(ap->a_nch); 1598 xop->isdir = 0; 1599 xop->dopermanent = isopen ? 0 : HAMMER2_DELETE_PERMANENT; 1600 hammer2_xop_start(&xop->head, hammer2_xop_unlink); 1601 1602 /* 1603 * Collect the real inode and adjust nlinks, destroy the real 1604 * inode if nlinks transitions to 0 and it was the real inode 1605 * (else it has already been removed). 1606 */ 1607 error = hammer2_xop_collect(&xop->head, 0); 1608 hammer2_inode_unlock(dip); 1609 1610 if (error == 0) { 1611 ip = hammer2_inode_get(dip->pmp, dip, &xop->head.cluster, -1); 1612 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP); 1613 if (ip) { 1614 hammer2_inode_unlink_finisher(ip, isopen); 1615 hammer2_inode_unlock(ip); 1616 } 1617 } else { 1618 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP); 1619 } 1620 1621 hammer2_inode_run_sideq(dip->pmp); 1622 hammer2_trans_done(dip->pmp); 1623 if (error == 0) 1624 cache_unlink(ap->a_nch); 1625 LOCKSTOP; 1626 return (error); 1627 } 1628 1629 /* 1630 * hammer2_vop_nrmdir { nch, dvp, cred } 1631 */ 1632 static 1633 int 1634 hammer2_vop_nrmdir(struct vop_nrmdir_args *ap) 1635 { 1636 hammer2_xop_unlink_t *xop; 1637 hammer2_inode_t *dip; 1638 hammer2_inode_t *ip; 1639 struct namecache *ncp; 1640 int isopen; 1641 int error; 1642 1643 LOCKSTART; 1644 dip = VTOI(ap->a_dvp); 1645 if (dip->pmp->ronly) { 1646 LOCKSTOP; 1647 return(EROFS); 1648 } 1649 1650 hammer2_pfs_memory_wait(dip->pmp); 1651 hammer2_trans_init(dip->pmp, 0); 1652 hammer2_inode_lock(dip, 0); 1653 1654 xop = hammer2_xop_alloc(dip, HAMMER2_XOP_MODIFYING); 1655 1656 ncp = ap->a_nch->ncp; 1657 hammer2_xop_setname(&xop->head, ncp->nc_name, ncp->nc_nlen); 1658 isopen = cache_isopen(ap->a_nch); 1659 xop->isdir = 1; 1660 xop->dopermanent = isopen ? 0 : HAMMER2_DELETE_PERMANENT; 1661 hammer2_xop_start(&xop->head, hammer2_xop_unlink); 1662 1663 /* 1664 * Collect the real inode and adjust nlinks, destroy the real 1665 * inode if nlinks transitions to 0 and it was the real inode 1666 * (else it has already been removed). 1667 */ 1668 error = hammer2_xop_collect(&xop->head, 0); 1669 hammer2_inode_unlock(dip); 1670 1671 if (error == 0) { 1672 ip = hammer2_inode_get(dip->pmp, dip, &xop->head.cluster, -1); 1673 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP); 1674 if (ip) { 1675 hammer2_inode_unlink_finisher(ip, isopen); 1676 hammer2_inode_unlock(ip); 1677 } 1678 } else { 1679 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP); 1680 } 1681 hammer2_inode_run_sideq(dip->pmp); 1682 hammer2_trans_done(dip->pmp); 1683 if (error == 0) 1684 cache_unlink(ap->a_nch); 1685 LOCKSTOP; 1686 return (error); 1687 } 1688 1689 /* 1690 * hammer2_vop_nrename { fnch, tnch, fdvp, tdvp, cred } 1691 */ 1692 static 1693 int 1694 hammer2_vop_nrename(struct vop_nrename_args *ap) 1695 { 1696 struct namecache *fncp; 1697 struct namecache *tncp; 1698 hammer2_inode_t *cdip; 1699 hammer2_inode_t *fdip; 1700 hammer2_inode_t *tdip; 1701 hammer2_inode_t *ip; 1702 const uint8_t *fname; 1703 size_t fname_len; 1704 const uint8_t *tname; 1705 size_t tname_len; 1706 int error; 1707 int tnch_error; 1708 hammer2_key_t tlhc; 1709 1710 if (ap->a_fdvp->v_mount != ap->a_tdvp->v_mount) 1711 return(EXDEV); 1712 if (ap->a_fdvp->v_mount != ap->a_fnch->ncp->nc_vp->v_mount) 1713 return(EXDEV); 1714 1715 fdip = VTOI(ap->a_fdvp); /* source directory */ 1716 tdip = VTOI(ap->a_tdvp); /* target directory */ 1717 1718 if (fdip->pmp->ronly) 1719 return(EROFS); 1720 1721 LOCKSTART; 1722 fncp = ap->a_fnch->ncp; /* entry name in source */ 1723 fname = fncp->nc_name; 1724 fname_len = fncp->nc_nlen; 1725 1726 tncp = ap->a_tnch->ncp; /* entry name in target */ 1727 tname = tncp->nc_name; 1728 tname_len = tncp->nc_nlen; 1729 1730 hammer2_pfs_memory_wait(tdip->pmp); 1731 hammer2_trans_init(tdip->pmp, 0); 1732 1733 /* 1734 * ip is the inode being renamed. If this is a hardlink then 1735 * ip represents the actual file and not the hardlink marker. 1736 */ 1737 ip = VTOI(fncp->nc_vp); 1738 1739 /* 1740 * The common parent directory must be locked first to avoid deadlocks. 1741 * Also note that fdip and/or tdip might match cdip. 1742 */ 1743 cdip = hammer2_inode_common_parent(ip->pip, tdip); 1744 hammer2_inode_lock(cdip, 0); 1745 hammer2_inode_lock(fdip, 0); 1746 hammer2_inode_lock(tdip, 0); 1747 hammer2_inode_ref(ip); /* extra ref */ 1748 error = 0; 1749 1750 /* 1751 * If ip is a hardlink target and fdip != cdip we must shift the 1752 * inode to cdip. 1753 */ 1754 if (fdip != cdip && 1755 (ip->meta.name_key & HAMMER2_DIRHASH_VISIBLE) == 0) { 1756 hammer2_xop_nlink_t *xop1; 1757 1758 xop1 = hammer2_xop_alloc(fdip, HAMMER2_XOP_MODIFYING); 1759 hammer2_xop_setip2(&xop1->head, ip); 1760 hammer2_xop_setip3(&xop1->head, cdip); 1761 1762 hammer2_xop_start(&xop1->head, hammer2_xop_nlink); 1763 error = hammer2_xop_collect(&xop1->head, 0); 1764 hammer2_xop_retire(&xop1->head, HAMMER2_XOPMASK_VOP); 1765 } 1766 1767 /* 1768 * Delete the target namespace. 1769 */ 1770 { 1771 hammer2_xop_unlink_t *xop2; 1772 hammer2_inode_t *tip; 1773 int isopen; 1774 1775 /* 1776 * The unlink XOP unlinks the path from the directory and 1777 * locates and returns the cluster associated with the real 1778 * inode. We have to handle nlinks here on the frontend. 1779 */ 1780 xop2 = hammer2_xop_alloc(tdip, HAMMER2_XOP_MODIFYING); 1781 hammer2_xop_setname(&xop2->head, tname, tname_len); 1782 isopen = cache_isopen(ap->a_tnch); 1783 xop2->isdir = -1; 1784 xop2->dopermanent = isopen ? 0 : HAMMER2_DELETE_PERMANENT; 1785 hammer2_xop_start(&xop2->head, hammer2_xop_unlink); 1786 1787 /* 1788 * Collect the real inode and adjust nlinks, destroy the real 1789 * inode if nlinks transitions to 0 and it was the real inode 1790 * (else it has already been removed). 1791 */ 1792 tnch_error = hammer2_xop_collect(&xop2->head, 0); 1793 /* hammer2_inode_unlock(tdip); */ 1794 1795 if (tnch_error == 0) { 1796 tip = hammer2_inode_get(tdip->pmp, NULL, 1797 &xop2->head.cluster, -1); 1798 hammer2_xop_retire(&xop2->head, HAMMER2_XOPMASK_VOP); 1799 if (tip) { 1800 hammer2_inode_unlink_finisher(tip, isopen); 1801 hammer2_inode_unlock(tip); 1802 } 1803 } else { 1804 hammer2_xop_retire(&xop2->head, HAMMER2_XOPMASK_VOP); 1805 } 1806 /* hammer2_inode_lock(tdip, 0); */ 1807 1808 if (tnch_error && tnch_error != ENOENT) { 1809 error = tnch_error; 1810 goto done2; 1811 } 1812 } 1813 1814 /* 1815 * Resolve the collision space for (tdip, tname, tname_len) 1816 * 1817 * tdip must be held exclusively locked to prevent races. 1818 */ 1819 { 1820 hammer2_xop_scanlhc_t *sxop; 1821 hammer2_tid_t lhcbase; 1822 1823 tlhc = hammer2_dirhash(tname, tname_len); 1824 lhcbase = tlhc; 1825 sxop = hammer2_xop_alloc(tdip, HAMMER2_XOP_MODIFYING); 1826 sxop->lhc = tlhc; 1827 hammer2_xop_start(&sxop->head, hammer2_xop_scanlhc); 1828 while ((error = hammer2_xop_collect(&sxop->head, 0)) == 0) { 1829 if (tlhc != sxop->head.cluster.focus->bref.key) 1830 break; 1831 ++tlhc; 1832 } 1833 hammer2_xop_retire(&sxop->head, HAMMER2_XOPMASK_VOP); 1834 1835 if (error) { 1836 if (error != ENOENT) 1837 goto done2; 1838 ++tlhc; 1839 error = 0; 1840 } 1841 if ((lhcbase ^ tlhc) & ~HAMMER2_DIRHASH_LOMASK) { 1842 error = ENOSPC; 1843 goto done2; 1844 } 1845 } 1846 1847 /* 1848 * Everything is setup, do the rename. 1849 * 1850 * We have to synchronize ip->meta to the underlying operation. 1851 * 1852 * NOTE: To avoid deadlocks we cannot lock (ip) while we are 1853 * unlinking elements from their directories. Locking 1854 * the nlinks field does not lock the whole inode. 1855 */ 1856 hammer2_inode_lock(ip, 0); 1857 if (error == 0) { 1858 hammer2_xop_nrename_t *xop4; 1859 1860 xop4 = hammer2_xop_alloc(fdip, HAMMER2_XOP_MODIFYING); 1861 xop4->lhc = tlhc; 1862 xop4->ip_key = ip->meta.name_key; 1863 hammer2_xop_setip2(&xop4->head, ip); 1864 hammer2_xop_setip3(&xop4->head, tdip); 1865 hammer2_xop_setname(&xop4->head, fname, fname_len); 1866 hammer2_xop_setname2(&xop4->head, tname, tname_len); 1867 hammer2_xop_start(&xop4->head, hammer2_xop_nrename); 1868 1869 error = hammer2_xop_collect(&xop4->head, 0); 1870 hammer2_xop_retire(&xop4->head, HAMMER2_XOPMASK_VOP); 1871 1872 if (error == ENOENT) 1873 error = 0; 1874 if (error == 0 && 1875 (ip->meta.name_key & HAMMER2_DIRHASH_VISIBLE)) { 1876 hammer2_inode_modify(ip); 1877 ip->meta.name_len = tname_len; 1878 ip->meta.name_key = tlhc; 1879 1880 } 1881 } 1882 1883 /* 1884 * Fixup ip->pip if we were renaming the actual file and not a 1885 * hardlink pointer. 1886 */ 1887 if (error == 0 && (ip->meta.name_key & HAMMER2_DIRHASH_VISIBLE)) { 1888 hammer2_inode_t *opip; 1889 1890 if (ip->pip != tdip) { 1891 hammer2_inode_ref(tdip); 1892 opip = ip->pip; 1893 ip->pip = tdip; 1894 if (opip) 1895 hammer2_inode_drop(opip); 1896 } 1897 } 1898 hammer2_inode_unlock(ip); 1899 done2: 1900 hammer2_inode_unlock(tdip); 1901 hammer2_inode_unlock(fdip); 1902 hammer2_inode_unlock(cdip); 1903 hammer2_inode_drop(ip); 1904 hammer2_inode_drop(cdip); 1905 hammer2_inode_run_sideq(fdip->pmp); 1906 hammer2_trans_done(tdip->pmp); 1907 1908 /* 1909 * Issue the namecache update after unlocking all the internal 1910 * hammer structures, otherwise we might deadlock. 1911 */ 1912 if (tnch_error == 0) { 1913 cache_unlink(ap->a_tnch); 1914 cache_setunresolved(ap->a_tnch); 1915 } 1916 if (error == 0) 1917 cache_rename(ap->a_fnch, ap->a_tnch); 1918 1919 LOCKSTOP; 1920 return (error); 1921 } 1922 1923 /* 1924 * hammer2_vop_ioctl { vp, command, data, fflag, cred } 1925 */ 1926 static 1927 int 1928 hammer2_vop_ioctl(struct vop_ioctl_args *ap) 1929 { 1930 hammer2_inode_t *ip; 1931 int error; 1932 1933 LOCKSTART; 1934 ip = VTOI(ap->a_vp); 1935 1936 error = hammer2_ioctl(ip, ap->a_command, (void *)ap->a_data, 1937 ap->a_fflag, ap->a_cred); 1938 LOCKSTOP; 1939 return (error); 1940 } 1941 1942 static 1943 int 1944 hammer2_vop_mountctl(struct vop_mountctl_args *ap) 1945 { 1946 struct mount *mp; 1947 hammer2_pfs_t *pmp; 1948 int rc; 1949 1950 LOCKSTART; 1951 switch (ap->a_op) { 1952 case (MOUNTCTL_SET_EXPORT): 1953 mp = ap->a_head.a_ops->head.vv_mount; 1954 pmp = MPTOPMP(mp); 1955 1956 if (ap->a_ctllen != sizeof(struct export_args)) 1957 rc = (EINVAL); 1958 else 1959 rc = vfs_export(mp, &pmp->export, 1960 (const struct export_args *)ap->a_ctl); 1961 break; 1962 default: 1963 rc = vop_stdmountctl(ap); 1964 break; 1965 } 1966 LOCKSTOP; 1967 return (rc); 1968 } 1969 1970 /* 1971 * KQFILTER 1972 */ 1973 static void filt_hammer2detach(struct knote *kn); 1974 static int filt_hammer2read(struct knote *kn, long hint); 1975 static int filt_hammer2write(struct knote *kn, long hint); 1976 static int filt_hammer2vnode(struct knote *kn, long hint); 1977 1978 static struct filterops hammer2read_filtops = 1979 { FILTEROP_ISFD | FILTEROP_MPSAFE, 1980 NULL, filt_hammer2detach, filt_hammer2read }; 1981 static struct filterops hammer2write_filtops = 1982 { FILTEROP_ISFD | FILTEROP_MPSAFE, 1983 NULL, filt_hammer2detach, filt_hammer2write }; 1984 static struct filterops hammer2vnode_filtops = 1985 { FILTEROP_ISFD | FILTEROP_MPSAFE, 1986 NULL, filt_hammer2detach, filt_hammer2vnode }; 1987 1988 static 1989 int 1990 hammer2_vop_kqfilter(struct vop_kqfilter_args *ap) 1991 { 1992 struct vnode *vp = ap->a_vp; 1993 struct knote *kn = ap->a_kn; 1994 1995 switch (kn->kn_filter) { 1996 case EVFILT_READ: 1997 kn->kn_fop = &hammer2read_filtops; 1998 break; 1999 case EVFILT_WRITE: 2000 kn->kn_fop = &hammer2write_filtops; 2001 break; 2002 case EVFILT_VNODE: 2003 kn->kn_fop = &hammer2vnode_filtops; 2004 break; 2005 default: 2006 return (EOPNOTSUPP); 2007 } 2008 2009 kn->kn_hook = (caddr_t)vp; 2010 2011 knote_insert(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn); 2012 2013 return(0); 2014 } 2015 2016 static void 2017 filt_hammer2detach(struct knote *kn) 2018 { 2019 struct vnode *vp = (void *)kn->kn_hook; 2020 2021 knote_remove(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn); 2022 } 2023 2024 static int 2025 filt_hammer2read(struct knote *kn, long hint) 2026 { 2027 struct vnode *vp = (void *)kn->kn_hook; 2028 hammer2_inode_t *ip = VTOI(vp); 2029 off_t off; 2030 2031 if (hint == NOTE_REVOKE) { 2032 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT); 2033 return(1); 2034 } 2035 off = ip->meta.size - kn->kn_fp->f_offset; 2036 kn->kn_data = (off < INTPTR_MAX) ? off : INTPTR_MAX; 2037 if (kn->kn_sfflags & NOTE_OLDAPI) 2038 return(1); 2039 return (kn->kn_data != 0); 2040 } 2041 2042 2043 static int 2044 filt_hammer2write(struct knote *kn, long hint) 2045 { 2046 if (hint == NOTE_REVOKE) 2047 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT); 2048 kn->kn_data = 0; 2049 return (1); 2050 } 2051 2052 static int 2053 filt_hammer2vnode(struct knote *kn, long hint) 2054 { 2055 if (kn->kn_sfflags & hint) 2056 kn->kn_fflags |= hint; 2057 if (hint == NOTE_REVOKE) { 2058 kn->kn_flags |= (EV_EOF | EV_NODATA); 2059 return (1); 2060 } 2061 return (kn->kn_fflags != 0); 2062 } 2063 2064 /* 2065 * FIFO VOPS 2066 */ 2067 static 2068 int 2069 hammer2_vop_markatime(struct vop_markatime_args *ap) 2070 { 2071 hammer2_inode_t *ip; 2072 struct vnode *vp; 2073 2074 vp = ap->a_vp; 2075 ip = VTOI(vp); 2076 2077 if (ip->pmp->ronly) 2078 return(EROFS); 2079 return(0); 2080 } 2081 2082 static 2083 int 2084 hammer2_vop_fifokqfilter(struct vop_kqfilter_args *ap) 2085 { 2086 int error; 2087 2088 error = VOCALL(&fifo_vnode_vops, &ap->a_head); 2089 if (error) 2090 error = hammer2_vop_kqfilter(ap); 2091 return(error); 2092 } 2093 2094 /* 2095 * VOPS vector 2096 */ 2097 struct vop_ops hammer2_vnode_vops = { 2098 .vop_default = vop_defaultop, 2099 .vop_fsync = hammer2_vop_fsync, 2100 .vop_getpages = vop_stdgetpages, 2101 .vop_putpages = vop_stdputpages, 2102 .vop_access = hammer2_vop_access, 2103 .vop_advlock = hammer2_vop_advlock, 2104 .vop_close = hammer2_vop_close, 2105 .vop_nlink = hammer2_vop_nlink, 2106 .vop_ncreate = hammer2_vop_ncreate, 2107 .vop_nsymlink = hammer2_vop_nsymlink, 2108 .vop_nremove = hammer2_vop_nremove, 2109 .vop_nrmdir = hammer2_vop_nrmdir, 2110 .vop_nrename = hammer2_vop_nrename, 2111 .vop_getattr = hammer2_vop_getattr, 2112 .vop_setattr = hammer2_vop_setattr, 2113 .vop_readdir = hammer2_vop_readdir, 2114 .vop_readlink = hammer2_vop_readlink, 2115 .vop_getpages = vop_stdgetpages, 2116 .vop_putpages = vop_stdputpages, 2117 .vop_read = hammer2_vop_read, 2118 .vop_write = hammer2_vop_write, 2119 .vop_open = hammer2_vop_open, 2120 .vop_inactive = hammer2_vop_inactive, 2121 .vop_reclaim = hammer2_vop_reclaim, 2122 .vop_nresolve = hammer2_vop_nresolve, 2123 .vop_nlookupdotdot = hammer2_vop_nlookupdotdot, 2124 .vop_nmkdir = hammer2_vop_nmkdir, 2125 .vop_nmknod = hammer2_vop_nmknod, 2126 .vop_ioctl = hammer2_vop_ioctl, 2127 .vop_mountctl = hammer2_vop_mountctl, 2128 .vop_bmap = hammer2_vop_bmap, 2129 .vop_strategy = hammer2_vop_strategy, 2130 .vop_kqfilter = hammer2_vop_kqfilter 2131 }; 2132 2133 struct vop_ops hammer2_spec_vops = { 2134 .vop_default = vop_defaultop, 2135 .vop_fsync = hammer2_vop_fsync, 2136 .vop_read = vop_stdnoread, 2137 .vop_write = vop_stdnowrite, 2138 .vop_access = hammer2_vop_access, 2139 .vop_close = hammer2_vop_close, 2140 .vop_markatime = hammer2_vop_markatime, 2141 .vop_getattr = hammer2_vop_getattr, 2142 .vop_inactive = hammer2_vop_inactive, 2143 .vop_reclaim = hammer2_vop_reclaim, 2144 .vop_setattr = hammer2_vop_setattr 2145 }; 2146 2147 struct vop_ops hammer2_fifo_vops = { 2148 .vop_default = fifo_vnoperate, 2149 .vop_fsync = hammer2_vop_fsync, 2150 #if 0 2151 .vop_read = hammer2_vop_fiforead, 2152 .vop_write = hammer2_vop_fifowrite, 2153 #endif 2154 .vop_access = hammer2_vop_access, 2155 #if 0 2156 .vop_close = hammer2_vop_fifoclose, 2157 #endif 2158 .vop_markatime = hammer2_vop_markatime, 2159 .vop_getattr = hammer2_vop_getattr, 2160 .vop_inactive = hammer2_vop_inactive, 2161 .vop_reclaim = hammer2_vop_reclaim, 2162 .vop_setattr = hammer2_vop_setattr, 2163 .vop_kqfilter = hammer2_vop_fifokqfilter 2164 }; 2165 2166