1 /* 2 * Copyright (c) 2004-2006 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $DragonFly: src/sys/kern/vfs_jops.c,v 1.36 2007/08/21 17:43:52 dillon Exp $ 35 */ 36 /* 37 * Each mount point may have zero or more independantly configured journals 38 * attached to it. Each journal is represented by a memory FIFO and worker 39 * thread. Journal events are streamed through the FIFO to the thread, 40 * batched up (typically on one-second intervals), and written out by the 41 * thread. 42 * 43 * Journal vnode ops are executed instead of mnt_vn_norm_ops when one or 44 * more journals have been installed on a mount point. It becomes the 45 * responsibility of the journal op to call the underlying normal op as 46 * appropriate. 47 */ 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/buf.h> 51 #include <sys/conf.h> 52 #include <sys/kernel.h> 53 #include <sys/queue.h> 54 #include <sys/lock.h> 55 #include <sys/malloc.h> 56 #include <sys/mount.h> 57 #include <sys/unistd.h> 58 #include <sys/vnode.h> 59 #include <sys/poll.h> 60 #include <sys/mountctl.h> 61 #include <sys/journal.h> 62 #include <sys/file.h> 63 #include <sys/proc.h> 64 #include <sys/msfbuf.h> 65 #include <sys/socket.h> 66 #include <sys/socketvar.h> 67 68 #include <machine/limits.h> 69 70 #include <vm/vm.h> 71 #include <vm/vm_object.h> 72 #include <vm/vm_page.h> 73 #include <vm/vm_pager.h> 74 #include <vm/vnode_pager.h> 75 76 #include <sys/file2.h> 77 #include <sys/thread2.h> 78 79 static int journal_attach(struct mount *mp); 80 static void journal_detach(struct mount *mp); 81 static int journal_install_vfs_journal(struct mount *mp, struct file *fp, 82 const struct mountctl_install_journal *info); 83 static int journal_restart_vfs_journal(struct mount *mp, struct file *fp, 84 const struct mountctl_restart_journal *info); 85 static int journal_remove_vfs_journal(struct mount *mp, 86 const struct mountctl_remove_journal *info); 87 static int journal_restart(struct mount *mp, struct file *fp, 88 struct journal *jo, int flags); 89 static int journal_destroy(struct mount *mp, struct journal *jo, int flags); 90 static int journal_resync_vfs_journal(struct mount *mp, const void *ctl); 91 static int journal_status_vfs_journal(struct mount *mp, 92 const struct mountctl_status_journal *info, 93 struct mountctl_journal_ret_status *rstat, 94 int buflen, int *res); 95 96 static void jrecord_undo_file(struct jrecord *jrec, struct vnode *vp, 97 int jrflags, off_t off, off_t bytes); 98 99 static int journal_setattr(struct vop_setattr_args *ap); 100 static int journal_write(struct vop_write_args *ap); 101 static int journal_fsync(struct vop_fsync_args *ap); 102 static int journal_putpages(struct vop_putpages_args *ap); 103 static int journal_setacl(struct vop_setacl_args *ap); 104 static int journal_setextattr(struct vop_setextattr_args *ap); 105 static int journal_ncreate(struct vop_ncreate_args *ap); 106 static int journal_nmknod(struct vop_nmknod_args *ap); 107 static int journal_nlink(struct vop_nlink_args *ap); 108 static int journal_nsymlink(struct vop_nsymlink_args *ap); 109 static int journal_nwhiteout(struct vop_nwhiteout_args *ap); 110 static int journal_nremove(struct vop_nremove_args *ap); 111 static int journal_nmkdir(struct vop_nmkdir_args *ap); 112 static int journal_nrmdir(struct vop_nrmdir_args *ap); 113 static int journal_nrename(struct vop_nrename_args *ap); 114 115 #define JRUNDO_SIZE 0x00000001 116 #define JRUNDO_UID 0x00000002 117 #define JRUNDO_GID 0x00000004 118 #define JRUNDO_FSID 0x00000008 119 #define JRUNDO_MODES 0x00000010 120 #define JRUNDO_INUM 0x00000020 121 #define JRUNDO_ATIME 0x00000040 122 #define JRUNDO_MTIME 0x00000080 123 #define JRUNDO_CTIME 0x00000100 124 #define JRUNDO_GEN 0x00000200 125 #define JRUNDO_FLAGS 0x00000400 126 #define JRUNDO_UDEV 0x00000800 127 #define JRUNDO_NLINK 0x00001000 128 #define JRUNDO_FILEDATA 0x00010000 129 #define JRUNDO_GETVP 0x00020000 130 #define JRUNDO_CONDLINK 0x00040000 /* write file data if link count 1 */ 131 #define JRUNDO_VATTR (JRUNDO_SIZE|JRUNDO_UID|JRUNDO_GID|JRUNDO_FSID|\ 132 JRUNDO_MODES|JRUNDO_INUM|JRUNDO_ATIME|JRUNDO_MTIME|\ 133 JRUNDO_CTIME|JRUNDO_GEN|JRUNDO_FLAGS|JRUNDO_UDEV|\ 134 JRUNDO_NLINK) 135 #define JRUNDO_ALL (JRUNDO_VATTR|JRUNDO_FILEDATA) 136 137 static struct vop_ops journal_vnode_vops = { 138 .vop_default = vop_journal_operate_ap, 139 .vop_mountctl = journal_mountctl, 140 .vop_setattr = journal_setattr, 141 .vop_write = journal_write, 142 .vop_fsync = journal_fsync, 143 .vop_putpages = journal_putpages, 144 .vop_setacl = journal_setacl, 145 .vop_setextattr = journal_setextattr, 146 .vop_ncreate = journal_ncreate, 147 .vop_nmknod = journal_nmknod, 148 .vop_nlink = journal_nlink, 149 .vop_nsymlink = journal_nsymlink, 150 .vop_nwhiteout = journal_nwhiteout, 151 .vop_nremove = journal_nremove, 152 .vop_nmkdir = journal_nmkdir, 153 .vop_nrmdir = journal_nrmdir, 154 .vop_nrename = journal_nrename 155 }; 156 157 int 158 journal_mountctl(struct vop_mountctl_args *ap) 159 { 160 struct mount *mp; 161 int error = 0; 162 163 mp = ap->a_head.a_ops->head.vv_mount; 164 KKASSERT(mp); 165 166 if (mp->mnt_vn_journal_ops == NULL) { 167 switch(ap->a_op) { 168 case MOUNTCTL_INSTALL_VFS_JOURNAL: 169 error = journal_attach(mp); 170 if (error == 0 && ap->a_ctllen != sizeof(struct mountctl_install_journal)) 171 error = EINVAL; 172 if (error == 0 && ap->a_fp == NULL) 173 error = EBADF; 174 if (error == 0) 175 error = journal_install_vfs_journal(mp, ap->a_fp, ap->a_ctl); 176 if (TAILQ_EMPTY(&mp->mnt_jlist)) 177 journal_detach(mp); 178 break; 179 case MOUNTCTL_RESTART_VFS_JOURNAL: 180 case MOUNTCTL_REMOVE_VFS_JOURNAL: 181 case MOUNTCTL_RESYNC_VFS_JOURNAL: 182 case MOUNTCTL_STATUS_VFS_JOURNAL: 183 error = ENOENT; 184 break; 185 default: 186 error = EOPNOTSUPP; 187 break; 188 } 189 } else { 190 switch(ap->a_op) { 191 case MOUNTCTL_INSTALL_VFS_JOURNAL: 192 if (ap->a_ctllen != sizeof(struct mountctl_install_journal)) 193 error = EINVAL; 194 if (error == 0 && ap->a_fp == NULL) 195 error = EBADF; 196 if (error == 0) 197 error = journal_install_vfs_journal(mp, ap->a_fp, ap->a_ctl); 198 break; 199 case MOUNTCTL_RESTART_VFS_JOURNAL: 200 if (ap->a_ctllen != sizeof(struct mountctl_restart_journal)) 201 error = EINVAL; 202 if (error == 0 && ap->a_fp == NULL) 203 error = EBADF; 204 if (error == 0) 205 error = journal_restart_vfs_journal(mp, ap->a_fp, ap->a_ctl); 206 break; 207 case MOUNTCTL_REMOVE_VFS_JOURNAL: 208 if (ap->a_ctllen != sizeof(struct mountctl_remove_journal)) 209 error = EINVAL; 210 if (error == 0) 211 error = journal_remove_vfs_journal(mp, ap->a_ctl); 212 if (TAILQ_EMPTY(&mp->mnt_jlist)) 213 journal_detach(mp); 214 break; 215 case MOUNTCTL_RESYNC_VFS_JOURNAL: 216 if (ap->a_ctllen != 0) 217 error = EINVAL; 218 error = journal_resync_vfs_journal(mp, ap->a_ctl); 219 break; 220 case MOUNTCTL_STATUS_VFS_JOURNAL: 221 if (ap->a_ctllen != sizeof(struct mountctl_status_journal)) 222 error = EINVAL; 223 if (error == 0) { 224 error = journal_status_vfs_journal(mp, ap->a_ctl, 225 ap->a_buf, ap->a_buflen, ap->a_res); 226 } 227 break; 228 default: 229 error = EOPNOTSUPP; 230 break; 231 } 232 } 233 return (error); 234 } 235 236 /* 237 * High level mount point setup. When a 238 */ 239 static int 240 journal_attach(struct mount *mp) 241 { 242 KKASSERT(mp->mnt_jbitmap == NULL); 243 vfs_add_vnodeops(mp, &journal_vnode_vops, &mp->mnt_vn_journal_ops); 244 mp->mnt_jbitmap = kmalloc(JREC_STREAMID_JMAX/8, M_JOURNAL, M_WAITOK|M_ZERO); 245 mp->mnt_streamid = JREC_STREAMID_JMIN; 246 return(0); 247 } 248 249 static void 250 journal_detach(struct mount *mp) 251 { 252 KKASSERT(mp->mnt_jbitmap != NULL); 253 if (mp->mnt_vn_journal_ops) 254 vfs_rm_vnodeops(mp, &journal_vnode_vops, &mp->mnt_vn_journal_ops); 255 kfree(mp->mnt_jbitmap, M_JOURNAL); 256 mp->mnt_jbitmap = NULL; 257 } 258 259 /* 260 * Install a journal on a mount point. Each journal has an associated worker 261 * thread which is responsible for buffering and spooling the data to the 262 * target. A mount point may have multiple journals attached to it. An 263 * initial start record is generated when the journal is associated. 264 */ 265 static int 266 journal_install_vfs_journal(struct mount *mp, struct file *fp, 267 const struct mountctl_install_journal *info) 268 { 269 struct journal *jo; 270 struct jrecord jrec; 271 int error = 0; 272 int size; 273 274 jo = kmalloc(sizeof(struct journal), M_JOURNAL, M_WAITOK|M_ZERO); 275 bcopy(info->id, jo->id, sizeof(jo->id)); 276 jo->flags = info->flags & ~(MC_JOURNAL_WACTIVE | MC_JOURNAL_RACTIVE | 277 MC_JOURNAL_STOP_REQ); 278 279 /* 280 * Memory FIFO size, round to nearest power of 2 281 */ 282 if (info->membufsize) { 283 if (info->membufsize < 65536) 284 size = 65536; 285 else if (info->membufsize > 128 * 1024 * 1024) 286 size = 128 * 1024 * 1024; 287 else 288 size = (int)info->membufsize; 289 } else { 290 size = 1024 * 1024; 291 } 292 jo->fifo.size = 1; 293 while (jo->fifo.size < size) 294 jo->fifo.size <<= 1; 295 296 /* 297 * Other parameters. If not specified the starting transaction id 298 * will be the current date. 299 */ 300 if (info->transid) { 301 jo->transid = info->transid; 302 } else { 303 struct timespec ts; 304 getnanotime(&ts); 305 jo->transid = ((int64_t)ts.tv_sec << 30) | ts.tv_nsec; 306 } 307 308 jo->fp = fp; 309 310 /* 311 * Allocate the memory FIFO 312 */ 313 jo->fifo.mask = jo->fifo.size - 1; 314 jo->fifo.membase = kmalloc(jo->fifo.size, M_JFIFO, M_WAITOK|M_ZERO|M_NULLOK); 315 if (jo->fifo.membase == NULL) 316 error = ENOMEM; 317 318 /* 319 * Create the worker threads and generate the association record. 320 */ 321 if (error) { 322 kfree(jo, M_JOURNAL); 323 } else { 324 fhold(fp); 325 journal_create_threads(jo); 326 jrecord_init(jo, &jrec, JREC_STREAMID_DISCONT); 327 jrecord_write(&jrec, JTYPE_ASSOCIATE, 0); 328 jrecord_done(&jrec, 0); 329 TAILQ_INSERT_TAIL(&mp->mnt_jlist, jo, jentry); 330 } 331 return(error); 332 } 333 334 /* 335 * Restart a journal with a new descriptor. The existing reader and writer 336 * threads are terminated and a new descriptor is associated with the 337 * journal. The FIFO rindex is reset to xindex and the threads are then 338 * restarted. 339 */ 340 static int 341 journal_restart_vfs_journal(struct mount *mp, struct file *fp, 342 const struct mountctl_restart_journal *info) 343 { 344 struct journal *jo; 345 int error; 346 347 TAILQ_FOREACH(jo, &mp->mnt_jlist, jentry) { 348 if (bcmp(jo->id, info->id, sizeof(jo->id)) == 0) 349 break; 350 } 351 if (jo) 352 error = journal_restart(mp, fp, jo, info->flags); 353 else 354 error = EINVAL; 355 return (error); 356 } 357 358 static int 359 journal_restart(struct mount *mp, struct file *fp, 360 struct journal *jo, int flags) 361 { 362 /* 363 * XXX lock the jo 364 */ 365 366 #if 0 367 /* 368 * Record the fact that we are doing a restart in the journal. 369 * XXX it isn't safe to do this if the journal is being restarted 370 * because it was locked up and the writer thread has already exited. 371 */ 372 jrecord_init(jo, &jrec, JREC_STREAMID_RESTART); 373 jrecord_write(&jrec, JTYPE_DISASSOCIATE, 0); 374 jrecord_done(&jrec, 0); 375 #endif 376 377 /* 378 * Stop the reader and writer threads and clean up the current 379 * descriptor. 380 */ 381 kprintf("RESTART WITH FP %p KILLING %p\n", fp, jo->fp); 382 journal_destroy_threads(jo, flags); 383 384 if (jo->fp) 385 fdrop(jo->fp); 386 387 /* 388 * Associate the new descriptor, reset the FIFO index, and recreate 389 * the threads. 390 */ 391 fhold(fp); 392 jo->fp = fp; 393 jo->fifo.rindex = jo->fifo.xindex; 394 journal_create_threads(jo); 395 396 return(0); 397 } 398 399 /* 400 * Disassociate a journal from a mount point and terminate its worker thread. 401 * A final termination record is written out before the file pointer is 402 * dropped. 403 */ 404 static int 405 journal_remove_vfs_journal(struct mount *mp, 406 const struct mountctl_remove_journal *info) 407 { 408 struct journal *jo; 409 int error; 410 411 TAILQ_FOREACH(jo, &mp->mnt_jlist, jentry) { 412 if (bcmp(jo->id, info->id, sizeof(jo->id)) == 0) 413 break; 414 } 415 if (jo) 416 error = journal_destroy(mp, jo, info->flags); 417 else 418 error = EINVAL; 419 return (error); 420 } 421 422 /* 423 * Remove all journals associated with a mount point. Usually called 424 * by the umount code. 425 */ 426 void 427 journal_remove_all_journals(struct mount *mp, int flags) 428 { 429 struct journal *jo; 430 431 while ((jo = TAILQ_FIRST(&mp->mnt_jlist)) != NULL) { 432 journal_destroy(mp, jo, flags); 433 } 434 } 435 436 static int 437 journal_destroy(struct mount *mp, struct journal *jo, int flags) 438 { 439 struct jrecord jrec; 440 441 TAILQ_REMOVE(&mp->mnt_jlist, jo, jentry); 442 443 jrecord_init(jo, &jrec, JREC_STREAMID_DISCONT); 444 jrecord_write(&jrec, JTYPE_DISASSOCIATE, 0); 445 jrecord_done(&jrec, 0); 446 447 journal_destroy_threads(jo, flags); 448 449 if (jo->fp) 450 fdrop(jo->fp); 451 if (jo->fifo.membase) 452 kfree(jo->fifo.membase, M_JFIFO); 453 kfree(jo, M_JOURNAL); 454 455 return(0); 456 } 457 458 static int 459 journal_resync_vfs_journal(struct mount *mp, const void *ctl) 460 { 461 return(EINVAL); 462 } 463 464 static int 465 journal_status_vfs_journal(struct mount *mp, 466 const struct mountctl_status_journal *info, 467 struct mountctl_journal_ret_status *rstat, 468 int buflen, int *res) 469 { 470 struct journal *jo; 471 int error = 0; 472 int index; 473 474 index = 0; 475 *res = 0; 476 TAILQ_FOREACH(jo, &mp->mnt_jlist, jentry) { 477 if (info->index == MC_JOURNAL_INDEX_ID) { 478 if (bcmp(jo->id, info->id, sizeof(jo->id)) != 0) 479 continue; 480 } else if (info->index >= 0) { 481 if (info->index < index) 482 continue; 483 } else if (info->index != MC_JOURNAL_INDEX_ALL) { 484 continue; 485 } 486 if (buflen < sizeof(*rstat)) { 487 if (*res) 488 rstat[-1].flags |= MC_JOURNAL_STATUS_MORETOCOME; 489 else 490 error = EINVAL; 491 break; 492 } 493 bzero(rstat, sizeof(*rstat)); 494 rstat->recsize = sizeof(*rstat); 495 bcopy(jo->id, rstat->id, sizeof(jo->id)); 496 rstat->index = index; 497 rstat->membufsize = jo->fifo.size; 498 rstat->membufused = jo->fifo.windex - jo->fifo.xindex; 499 rstat->membufunacked = jo->fifo.rindex - jo->fifo.xindex; 500 rstat->bytessent = jo->total_acked; 501 rstat->fifostalls = jo->fifostalls; 502 ++rstat; 503 ++index; 504 *res += sizeof(*rstat); 505 buflen -= sizeof(*rstat); 506 } 507 return(error); 508 } 509 510 /************************************************************************ 511 * PARALLEL TRANSACTION SUPPORT ROUTINES * 512 ************************************************************************ 513 * 514 * JRECLIST_*() - routines which create and iterate over jrecord structures, 515 * because a mount point may have multiple attached journals. 516 */ 517 518 /* 519 * Initialize the passed jrecord_list and create a jrecord for each 520 * journal we need to write to. Unnecessary mallocs are avoided by 521 * using the passed jrecord structure as the first jrecord in the list. 522 * A starting transaction is pushed for each jrecord. 523 * 524 * Returns non-zero if any of the journals require undo records. 525 */ 526 static 527 int 528 jreclist_init(struct mount *mp, struct jrecord_list *jreclist, 529 struct jrecord *jreccache, int16_t rectype) 530 { 531 struct journal *jo; 532 struct jrecord *jrec; 533 int wantrev; 534 int count; 535 int16_t streamid; 536 537 TAILQ_INIT(&jreclist->list); 538 539 /* 540 * Select the stream ID to use for the transaction. We must select 541 * a stream ID that is not currently in use by some other parallel 542 * transaction. 543 * 544 * Don't bother calculating the next streamid when reassigning 545 * mnt_streamid, since parallel transactions are fairly rare. This 546 * also allows someone observing the raw records to clearly see 547 * when parallel transactions occur. 548 */ 549 streamid = mp->mnt_streamid; 550 count = 0; 551 while (mp->mnt_jbitmap[streamid >> 3] & (1 << (streamid & 7))) { 552 if (++streamid == JREC_STREAMID_JMAX) 553 streamid = JREC_STREAMID_JMIN; 554 if (++count == JREC_STREAMID_JMAX - JREC_STREAMID_JMIN) { 555 kprintf("jreclist_init: all streamid's in use! sleeping\n"); 556 tsleep(jreclist, 0, "jsidfl", hz * 10); 557 count = 0; 558 } 559 } 560 mp->mnt_jbitmap[streamid >> 3] |= 1 << (streamid & 7); 561 mp->mnt_streamid = streamid; 562 jreclist->streamid = streamid; 563 564 /* 565 * Now initialize a stream on each journal. 566 */ 567 count = 0; 568 wantrev = 0; 569 TAILQ_FOREACH(jo, &mp->mnt_jlist, jentry) { 570 if (count == 0) 571 jrec = jreccache; 572 else 573 jrec = kmalloc(sizeof(*jrec), M_JOURNAL, M_WAITOK); 574 jrecord_init(jo, jrec, streamid); 575 jrec->user_save = jrecord_push(jrec, rectype); 576 TAILQ_INSERT_TAIL(&jreclist->list, jrec, user_entry); 577 if (jo->flags & MC_JOURNAL_WANT_REVERSABLE) 578 wantrev = 1; 579 ++count; 580 } 581 return(wantrev); 582 } 583 584 /* 585 * Terminate the journaled transactions started by jreclist_init(). If 586 * an error occured, the transaction records will be aborted. 587 */ 588 static 589 void 590 jreclist_done(struct mount *mp, struct jrecord_list *jreclist, int error) 591 { 592 struct jrecord *jrec; 593 int count; 594 595 /* 596 * Cleanup the jrecord state on each journal. 597 */ 598 TAILQ_FOREACH(jrec, &jreclist->list, user_entry) { 599 jrecord_pop(jrec, jrec->user_save); 600 jrecord_done(jrec, error); 601 } 602 603 /* 604 * Free allocated jrec's (the first is always supplied) 605 */ 606 count = 0; 607 while ((jrec = TAILQ_FIRST(&jreclist->list)) != NULL) { 608 TAILQ_REMOVE(&jreclist->list, jrec, user_entry); 609 if (count) 610 kfree(jrec, M_JOURNAL); 611 ++count; 612 } 613 614 /* 615 * Clear the streamid so it can be reused. 616 */ 617 mp->mnt_jbitmap[jreclist->streamid >> 3] &= ~(1 << (jreclist->streamid & 7)); 618 } 619 620 /* 621 * This procedure writes out UNDO records for available reversable 622 * journals. 623 * 624 * XXX could use improvement. There is no need to re-read the file 625 * for each journal. 626 */ 627 static 628 void 629 jreclist_undo_file(struct jrecord_list *jreclist, struct vnode *vp, 630 int jrflags, off_t off, off_t bytes) 631 { 632 struct jrecord *jrec; 633 int error; 634 635 error = 0; 636 if (jrflags & JRUNDO_GETVP) 637 error = vget(vp, LK_SHARED); 638 if (error == 0) { 639 TAILQ_FOREACH(jrec, &jreclist->list, user_entry) { 640 if (jrec->jo->flags & MC_JOURNAL_WANT_REVERSABLE) { 641 jrecord_undo_file(jrec, vp, jrflags, off, bytes); 642 } 643 } 644 } 645 if (error == 0 && jrflags & JRUNDO_GETVP) 646 vput(vp); 647 } 648 649 /************************************************************************ 650 * LOW LEVEL UNDO SUPPORT ROUTINE * 651 ************************************************************************ 652 * 653 * This function is used to support UNDO records. It will generate an 654 * appropriate record with the requested portion of the file data. Note 655 * that file data is only recorded if JRUNDO_FILEDATA is passed. If bytes 656 * is -1, it will be set to the size of the file. 657 */ 658 static void 659 jrecord_undo_file(struct jrecord *jrec, struct vnode *vp, int jrflags, 660 off_t off, off_t bytes) 661 { 662 struct vattr attr; 663 void *save1; /* warning, save pointers do not always remain valid */ 664 void *save2; 665 int error; 666 667 /* 668 * Setup. Start the UNDO record, obtain a shared lock on the vnode, 669 * and retrieve attribute info. 670 */ 671 save1 = jrecord_push(jrec, JTYPE_UNDO); 672 error = VOP_GETATTR(vp, &attr); 673 if (error) 674 goto done; 675 676 /* 677 * Generate UNDO records as requested. 678 */ 679 if (jrflags & JRUNDO_VATTR) { 680 save2 = jrecord_push(jrec, JTYPE_VATTR); 681 jrecord_leaf(jrec, JLEAF_VTYPE, &attr.va_type, sizeof(attr.va_type)); 682 if ((jrflags & JRUNDO_NLINK) && attr.va_nlink != VNOVAL) 683 jrecord_leaf(jrec, JLEAF_NLINK, &attr.va_nlink, sizeof(attr.va_nlink)); 684 if ((jrflags & JRUNDO_SIZE) && attr.va_size != VNOVAL) 685 jrecord_leaf(jrec, JLEAF_SIZE, &attr.va_size, sizeof(attr.va_size)); 686 if ((jrflags & JRUNDO_UID) && attr.va_uid != VNOVAL) 687 jrecord_leaf(jrec, JLEAF_UID, &attr.va_uid, sizeof(attr.va_uid)); 688 if ((jrflags & JRUNDO_GID) && attr.va_gid != VNOVAL) 689 jrecord_leaf(jrec, JLEAF_GID, &attr.va_gid, sizeof(attr.va_gid)); 690 if ((jrflags & JRUNDO_FSID) && attr.va_fsid != VNOVAL) 691 jrecord_leaf(jrec, JLEAF_FSID, &attr.va_fsid, sizeof(attr.va_fsid)); 692 if ((jrflags & JRUNDO_MODES) && attr.va_mode != (mode_t)VNOVAL) 693 jrecord_leaf(jrec, JLEAF_MODES, &attr.va_mode, sizeof(attr.va_mode)); 694 if ((jrflags & JRUNDO_INUM) && attr.va_fileid != VNOVAL) 695 jrecord_leaf(jrec, JLEAF_INUM, &attr.va_fileid, sizeof(attr.va_fileid)); 696 if ((jrflags & JRUNDO_ATIME) && attr.va_atime.tv_sec != VNOVAL) 697 jrecord_leaf(jrec, JLEAF_ATIME, &attr.va_atime, sizeof(attr.va_atime)); 698 if ((jrflags & JRUNDO_MTIME) && attr.va_mtime.tv_sec != VNOVAL) 699 jrecord_leaf(jrec, JLEAF_MTIME, &attr.va_mtime, sizeof(attr.va_mtime)); 700 if ((jrflags & JRUNDO_CTIME) && attr.va_ctime.tv_sec != VNOVAL) 701 jrecord_leaf(jrec, JLEAF_CTIME, &attr.va_ctime, sizeof(attr.va_ctime)); 702 if ((jrflags & JRUNDO_GEN) && attr.va_gen != VNOVAL) 703 jrecord_leaf(jrec, JLEAF_GEN, &attr.va_gen, sizeof(attr.va_gen)); 704 if ((jrflags & JRUNDO_FLAGS) && attr.va_flags != VNOVAL) 705 jrecord_leaf(jrec, JLEAF_FLAGS, &attr.va_flags, sizeof(attr.va_flags)); 706 if ((jrflags & JRUNDO_UDEV) && attr.va_rmajor != VNOVAL) { 707 udev_t rdev = makeudev(attr.va_rmajor, attr.va_rminor); 708 jrecord_leaf(jrec, JLEAF_UDEV, &rdev, sizeof(rdev)); 709 jrecord_leaf(jrec, JLEAF_UMAJOR, &attr.va_rmajor, sizeof(attr.va_rmajor)); 710 jrecord_leaf(jrec, JLEAF_UMINOR, &attr.va_rminor, sizeof(attr.va_rminor)); 711 } 712 jrecord_pop(jrec, save2); 713 } 714 715 /* 716 * Output the file data being overwritten by reading the file and 717 * writing it out to the journal prior to the write operation. We 718 * do not need to write out data past the current file EOF. 719 * 720 * XXX support JRUNDO_CONDLINK - do not write out file data for files 721 * with a link count > 1. The undo code needs to locate the inode and 722 * regenerate the hardlink. 723 */ 724 if ((jrflags & JRUNDO_FILEDATA) && attr.va_type == VREG) { 725 if (attr.va_size != VNOVAL) { 726 if (bytes == -1) 727 bytes = attr.va_size - off; 728 if (off + bytes > attr.va_size) 729 bytes = attr.va_size - off; 730 if (bytes > 0) 731 jrecord_file_data(jrec, vp, off, bytes); 732 } else { 733 error = EINVAL; 734 } 735 } 736 if ((jrflags & JRUNDO_FILEDATA) && attr.va_type == VLNK) { 737 struct iovec aiov; 738 struct uio auio; 739 char *buf; 740 741 buf = kmalloc(PATH_MAX, M_JOURNAL, M_WAITOK); 742 aiov.iov_base = buf; 743 aiov.iov_len = PATH_MAX; 744 auio.uio_iov = &aiov; 745 auio.uio_iovcnt = 1; 746 auio.uio_offset = 0; 747 auio.uio_rw = UIO_READ; 748 auio.uio_segflg = UIO_SYSSPACE; 749 auio.uio_td = curthread; 750 auio.uio_resid = PATH_MAX; 751 error = VOP_READLINK(vp, &auio, proc0.p_ucred); 752 if (error == 0) { 753 jrecord_leaf(jrec, JLEAF_SYMLINKDATA, buf, 754 PATH_MAX - auio.uio_resid); 755 } 756 kfree(buf, M_JOURNAL); 757 } 758 done: 759 if (error) 760 jrecord_leaf(jrec, JLEAF_ERROR, &error, sizeof(error)); 761 jrecord_pop(jrec, save1); 762 } 763 764 /************************************************************************ 765 * JOURNAL VNOPS * 766 ************************************************************************ 767 * 768 * These are function shims replacing the normal filesystem ops. We become 769 * responsible for calling the underlying filesystem ops. We have the choice 770 * of executing the underlying op first and then generating the journal entry, 771 * or starting the journal entry, executing the underlying op, and then 772 * either completing or aborting it. 773 * 774 * The journal is supposed to be a high-level entity, which generally means 775 * identifying files by name rather then by inode. Supplying both allows 776 * the journal to be used both for inode-number-compatible 'mirrors' and 777 * for simple filesystem replication. 778 * 779 * Writes are particularly difficult to deal with because a single write may 780 * represent a hundred megabyte buffer or more, and both writes and truncations 781 * require the 'old' data to be written out as well as the new data if the 782 * log is reversable. Other issues: 783 * 784 * - How to deal with operations on unlinked files (no path available), 785 * but which may still be filesystem visible due to hard links. 786 * 787 * - How to deal with modifications made via a memory map. 788 * 789 * - Future cache coherency support will require cache coherency API calls 790 * both prior to and after the call to the underlying VFS. 791 * 792 * ALSO NOTE: We do not have to shim compatibility VOPs like MKDIR which have 793 * new VFS equivalents (NMKDIR). 794 */ 795 796 /* 797 * Journal vop_setattr { a_vp, a_vap, a_cred } 798 */ 799 static 800 int 801 journal_setattr(struct vop_setattr_args *ap) 802 { 803 struct jrecord_list jreclist; 804 struct jrecord jreccache; 805 struct jrecord *jrec; 806 struct mount *mp; 807 void *save; 808 int error; 809 810 mp = ap->a_head.a_ops->head.vv_mount; 811 if (jreclist_init(mp, &jreclist, &jreccache, JTYPE_SETATTR)) { 812 jreclist_undo_file(&jreclist, ap->a_vp, JRUNDO_VATTR, 0, 0); 813 } 814 error = vop_journal_operate_ap(&ap->a_head); 815 if (error == 0) { 816 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 817 jrecord_write_cred(jrec, curthread, ap->a_cred); 818 jrecord_write_vnode_ref(jrec, ap->a_vp); 819 save = jrecord_push(jrec, JTYPE_REDO); 820 jrecord_write_vattr(jrec, ap->a_vap); 821 jrecord_pop(jrec, save); 822 } 823 } 824 jreclist_done(mp, &jreclist, error); 825 return (error); 826 } 827 828 /* 829 * Journal vop_write { a_vp, a_uio, a_ioflag, a_cred } 830 */ 831 static 832 int 833 journal_write(struct vop_write_args *ap) 834 { 835 struct jrecord_list jreclist; 836 struct jrecord jreccache; 837 struct jrecord *jrec; 838 struct mount *mp; 839 struct uio uio_copy; 840 struct iovec uio_one_iovec; 841 void *save; 842 int error; 843 844 /* 845 * Special synchronizing writes for VM backing store do not supply any 846 * real data 847 */ 848 if (ap->a_uio->uio_segflg == UIO_NOCOPY) { 849 error = vop_journal_operate_ap(&ap->a_head); 850 return (error); 851 } 852 853 /* 854 * This is really nasty. UIO's don't retain sufficient information to 855 * be reusable once they've gone through the VOP chain. The iovecs get 856 * cleared, so we have to copy the UIO. 857 * 858 * XXX fix the UIO code to not destroy iov's during a scan so we can 859 * reuse the uio over and over again. 860 * 861 * XXX UNDO code needs to journal the old data prior to the write. 862 */ 863 uio_copy = *ap->a_uio; 864 if (uio_copy.uio_iovcnt == 1) { 865 uio_one_iovec = ap->a_uio->uio_iov[0]; 866 uio_copy.uio_iov = &uio_one_iovec; 867 } else { 868 uio_copy.uio_iov = kmalloc(uio_copy.uio_iovcnt * sizeof(struct iovec), 869 M_JOURNAL, M_WAITOK); 870 bcopy(ap->a_uio->uio_iov, uio_copy.uio_iov, 871 uio_copy.uio_iovcnt * sizeof(struct iovec)); 872 } 873 874 /* 875 * Write out undo data. Note that uio_offset is incorrect if 876 * IO_APPEND is set, but fortunately we have no undo file data to 877 * write out in that case. 878 */ 879 mp = ap->a_head.a_ops->head.vv_mount; 880 if (jreclist_init(mp, &jreclist, &jreccache, JTYPE_WRITE)) { 881 if (ap->a_ioflag & IO_APPEND) { 882 jreclist_undo_file(&jreclist, ap->a_vp, JRUNDO_SIZE|JRUNDO_MTIME, 0, 0); 883 } else { 884 jreclist_undo_file(&jreclist, ap->a_vp, 885 JRUNDO_FILEDATA|JRUNDO_SIZE|JRUNDO_MTIME, 886 uio_copy.uio_offset, uio_copy.uio_resid); 887 } 888 } 889 error = vop_journal_operate_ap(&ap->a_head); 890 891 /* 892 * XXX bad hack to figure out the offset for O_APPEND writes (note: 893 * uio field state after the VFS operation). 894 */ 895 uio_copy.uio_offset = ap->a_uio->uio_offset - 896 (uio_copy.uio_resid - ap->a_uio->uio_resid); 897 898 /* 899 * Output the write data to the journal. 900 */ 901 if (error == 0) { 902 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 903 jrecord_write_cred(jrec, NULL, ap->a_cred); 904 jrecord_write_vnode_ref(jrec, ap->a_vp); 905 save = jrecord_push(jrec, JTYPE_REDO); 906 jrecord_write_uio(jrec, JLEAF_FILEDATA, &uio_copy); 907 jrecord_pop(jrec, save); 908 } 909 } 910 jreclist_done(mp, &jreclist, error); 911 912 if (uio_copy.uio_iov != &uio_one_iovec) 913 kfree(uio_copy.uio_iov, M_JOURNAL); 914 return (error); 915 } 916 917 /* 918 * Journal vop_fsync { a_vp, a_waitfor } 919 */ 920 static 921 int 922 journal_fsync(struct vop_fsync_args *ap) 923 { 924 #if 0 925 struct mount *mp; 926 struct journal *jo; 927 #endif 928 int error; 929 930 error = vop_journal_operate_ap(&ap->a_head); 931 #if 0 932 mp = ap->a_head.a_ops->head.vv_mount; 933 if (error == 0) { 934 TAILQ_FOREACH(jo, &mp->mnt_jlist, jentry) { 935 /* XXX synchronize pending journal records */ 936 } 937 } 938 #endif 939 return (error); 940 } 941 942 /* 943 * Journal vop_putpages { a_vp, a_m, a_count, a_sync, a_rtvals, a_offset } 944 * 945 * note: a_count is in bytes. 946 */ 947 static 948 int 949 journal_putpages(struct vop_putpages_args *ap) 950 { 951 struct jrecord_list jreclist; 952 struct jrecord jreccache; 953 struct jrecord *jrec; 954 struct mount *mp; 955 void *save; 956 int error; 957 958 mp = ap->a_head.a_ops->head.vv_mount; 959 if (jreclist_init(mp, &jreclist, &jreccache, JTYPE_PUTPAGES) && 960 ap->a_count > 0 961 ) { 962 jreclist_undo_file(&jreclist, ap->a_vp, 963 JRUNDO_FILEDATA|JRUNDO_SIZE|JRUNDO_MTIME, 964 ap->a_offset, btoc(ap->a_count)); 965 } 966 error = vop_journal_operate_ap(&ap->a_head); 967 if (error == 0 && ap->a_count > 0) { 968 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 969 jrecord_write_vnode_ref(jrec, ap->a_vp); 970 save = jrecord_push(jrec, JTYPE_REDO); 971 jrecord_write_pagelist(jrec, JLEAF_FILEDATA, ap->a_m, ap->a_rtvals, 972 btoc(ap->a_count), ap->a_offset); 973 jrecord_pop(jrec, save); 974 } 975 } 976 jreclist_done(mp, &jreclist, error); 977 return (error); 978 } 979 980 /* 981 * Journal vop_setacl { a_vp, a_type, a_aclp, a_cred } 982 */ 983 static 984 int 985 journal_setacl(struct vop_setacl_args *ap) 986 { 987 struct jrecord_list jreclist; 988 struct jrecord jreccache; 989 struct jrecord *jrec; 990 struct mount *mp; 991 int error; 992 993 mp = ap->a_head.a_ops->head.vv_mount; 994 jreclist_init(mp, &jreclist, &jreccache, JTYPE_SETACL); 995 error = vop_journal_operate_ap(&ap->a_head); 996 if (error == 0) { 997 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 998 #if 0 999 if ((jo->flags & MC_JOURNAL_WANT_REVERSABLE)) 1000 jrecord_undo_file(jrec, ap->a_vp, JRUNDO_XXX, 0, 0); 1001 #endif 1002 jrecord_write_cred(jrec, curthread, ap->a_cred); 1003 jrecord_write_vnode_ref(jrec, ap->a_vp); 1004 #if 0 1005 save = jrecord_push(jrec, JTYPE_REDO); 1006 /* XXX type, aclp */ 1007 jrecord_pop(jrec, save); 1008 #endif 1009 } 1010 } 1011 jreclist_done(mp, &jreclist, error); 1012 return (error); 1013 } 1014 1015 /* 1016 * Journal vop_setextattr { a_vp, a_name, a_uio, a_cred } 1017 */ 1018 static 1019 int 1020 journal_setextattr(struct vop_setextattr_args *ap) 1021 { 1022 struct jrecord_list jreclist; 1023 struct jrecord jreccache; 1024 struct jrecord *jrec; 1025 struct mount *mp; 1026 void *save; 1027 int error; 1028 1029 mp = ap->a_head.a_ops->head.vv_mount; 1030 jreclist_init(mp, &jreclist, &jreccache, JTYPE_SETEXTATTR); 1031 error = vop_journal_operate_ap(&ap->a_head); 1032 if (error == 0) { 1033 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 1034 #if 0 1035 if ((jo->flags & MC_JOURNAL_WANT_REVERSABLE)) 1036 jrecord_undo_file(jrec, ap->a_vp, JRUNDO_XXX, 0, 0); 1037 #endif 1038 jrecord_write_cred(jrec, curthread, ap->a_cred); 1039 jrecord_write_vnode_ref(jrec, ap->a_vp); 1040 jrecord_leaf(jrec, JLEAF_ATTRNAME, ap->a_name, strlen(ap->a_name)); 1041 save = jrecord_push(jrec, JTYPE_REDO); 1042 jrecord_write_uio(jrec, JLEAF_FILEDATA, ap->a_uio); 1043 jrecord_pop(jrec, save); 1044 } 1045 } 1046 jreclist_done(mp, &jreclist, error); 1047 return (error); 1048 } 1049 1050 /* 1051 * Journal vop_ncreate { a_nch, a_vpp, a_cred, a_vap } 1052 */ 1053 static 1054 int 1055 journal_ncreate(struct vop_ncreate_args *ap) 1056 { 1057 struct jrecord_list jreclist; 1058 struct jrecord jreccache; 1059 struct jrecord *jrec; 1060 struct mount *mp; 1061 void *save; 1062 int error; 1063 1064 mp = ap->a_head.a_ops->head.vv_mount; 1065 jreclist_init(mp, &jreclist, &jreccache, JTYPE_CREATE); 1066 error = vop_journal_operate_ap(&ap->a_head); 1067 if (error == 0) { 1068 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 1069 jrecord_write_cred(jrec, NULL, ap->a_cred); 1070 jrecord_write_path(jrec, JLEAF_PATH1, ap->a_nch->ncp); 1071 if (*ap->a_vpp) 1072 jrecord_write_vnode_ref(jrec, *ap->a_vpp); 1073 save = jrecord_push(jrec, JTYPE_REDO); 1074 jrecord_write_vattr(jrec, ap->a_vap); 1075 jrecord_pop(jrec, save); 1076 } 1077 } 1078 jreclist_done(mp, &jreclist, error); 1079 return (error); 1080 } 1081 1082 /* 1083 * Journal vop_nmknod { a_nch, a_vpp, a_cred, a_vap } 1084 */ 1085 static 1086 int 1087 journal_nmknod(struct vop_nmknod_args *ap) 1088 { 1089 struct jrecord_list jreclist; 1090 struct jrecord jreccache; 1091 struct jrecord *jrec; 1092 struct mount *mp; 1093 void *save; 1094 int error; 1095 1096 mp = ap->a_head.a_ops->head.vv_mount; 1097 jreclist_init(mp, &jreclist, &jreccache, JTYPE_MKNOD); 1098 error = vop_journal_operate_ap(&ap->a_head); 1099 if (error == 0) { 1100 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 1101 jrecord_write_cred(jrec, NULL, ap->a_cred); 1102 jrecord_write_path(jrec, JLEAF_PATH1, ap->a_nch->ncp); 1103 save = jrecord_push(jrec, JTYPE_REDO); 1104 jrecord_write_vattr(jrec, ap->a_vap); 1105 jrecord_pop(jrec, save); 1106 if (*ap->a_vpp) 1107 jrecord_write_vnode_ref(jrec, *ap->a_vpp); 1108 } 1109 } 1110 jreclist_done(mp, &jreclist, error); 1111 return (error); 1112 } 1113 1114 /* 1115 * Journal vop_nlink { a_nch, a_vp, a_cred } 1116 */ 1117 static 1118 int 1119 journal_nlink(struct vop_nlink_args *ap) 1120 { 1121 struct jrecord_list jreclist; 1122 struct jrecord jreccache; 1123 struct jrecord *jrec; 1124 struct mount *mp; 1125 void *save; 1126 int error; 1127 1128 mp = ap->a_head.a_ops->head.vv_mount; 1129 jreclist_init(mp, &jreclist, &jreccache, JTYPE_LINK); 1130 error = vop_journal_operate_ap(&ap->a_head); 1131 if (error == 0) { 1132 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 1133 jrecord_write_cred(jrec, NULL, ap->a_cred); 1134 jrecord_write_path(jrec, JLEAF_PATH1, ap->a_nch->ncp); 1135 /* XXX PATH to VP and inode number */ 1136 /* XXX this call may not record the correct path when 1137 * multiple paths are available */ 1138 save = jrecord_push(jrec, JTYPE_REDO); 1139 jrecord_write_vnode_link(jrec, ap->a_vp, ap->a_nch->ncp); 1140 jrecord_pop(jrec, save); 1141 } 1142 } 1143 jreclist_done(mp, &jreclist, error); 1144 return (error); 1145 } 1146 1147 /* 1148 * Journal vop_symlink { a_nch, a_vpp, a_cred, a_vap, a_target } 1149 */ 1150 static 1151 int 1152 journal_nsymlink(struct vop_nsymlink_args *ap) 1153 { 1154 struct jrecord_list jreclist; 1155 struct jrecord jreccache; 1156 struct jrecord *jrec; 1157 struct mount *mp; 1158 void *save; 1159 int error; 1160 1161 mp = ap->a_head.a_ops->head.vv_mount; 1162 jreclist_init(mp, &jreclist, &jreccache, JTYPE_SYMLINK); 1163 error = vop_journal_operate_ap(&ap->a_head); 1164 if (error == 0) { 1165 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 1166 jrecord_write_cred(jrec, NULL, ap->a_cred); 1167 jrecord_write_path(jrec, JLEAF_PATH1, ap->a_nch->ncp); 1168 save = jrecord_push(jrec, JTYPE_REDO); 1169 jrecord_leaf(jrec, JLEAF_SYMLINKDATA, 1170 ap->a_target, strlen(ap->a_target)); 1171 jrecord_pop(jrec, save); 1172 if (*ap->a_vpp) 1173 jrecord_write_vnode_ref(jrec, *ap->a_vpp); 1174 } 1175 } 1176 jreclist_done(mp, &jreclist, error); 1177 return (error); 1178 } 1179 1180 /* 1181 * Journal vop_nwhiteout { a_nch, a_cred, a_flags } 1182 */ 1183 static 1184 int 1185 journal_nwhiteout(struct vop_nwhiteout_args *ap) 1186 { 1187 struct jrecord_list jreclist; 1188 struct jrecord jreccache; 1189 struct jrecord *jrec; 1190 struct mount *mp; 1191 int error; 1192 1193 mp = ap->a_head.a_ops->head.vv_mount; 1194 jreclist_init(mp, &jreclist, &jreccache, JTYPE_WHITEOUT); 1195 error = vop_journal_operate_ap(&ap->a_head); 1196 if (error == 0) { 1197 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 1198 jrecord_write_cred(jrec, NULL, ap->a_cred); 1199 jrecord_write_path(jrec, JLEAF_PATH1, ap->a_nch->ncp); 1200 } 1201 } 1202 jreclist_done(mp, &jreclist, error); 1203 return (error); 1204 } 1205 1206 /* 1207 * Journal vop_nremove { a_nch, a_cred } 1208 */ 1209 static 1210 int 1211 journal_nremove(struct vop_nremove_args *ap) 1212 { 1213 struct jrecord_list jreclist; 1214 struct jrecord jreccache; 1215 struct jrecord *jrec; 1216 struct mount *mp; 1217 int error; 1218 1219 mp = ap->a_head.a_ops->head.vv_mount; 1220 if (jreclist_init(mp, &jreclist, &jreccache, JTYPE_REMOVE) && 1221 ap->a_nch->ncp->nc_vp 1222 ) { 1223 jreclist_undo_file(&jreclist, ap->a_nch->ncp->nc_vp, 1224 JRUNDO_ALL|JRUNDO_GETVP|JRUNDO_CONDLINK, 0, -1); 1225 } 1226 error = vop_journal_operate_ap(&ap->a_head); 1227 if (error == 0) { 1228 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 1229 jrecord_write_cred(jrec, NULL, ap->a_cred); 1230 jrecord_write_path(jrec, JLEAF_PATH1, ap->a_nch->ncp); 1231 } 1232 } 1233 jreclist_done(mp, &jreclist, error); 1234 return (error); 1235 } 1236 1237 /* 1238 * Journal vop_nmkdir { a_nch, a_vpp, a_cred, a_vap } 1239 */ 1240 static 1241 int 1242 journal_nmkdir(struct vop_nmkdir_args *ap) 1243 { 1244 struct jrecord_list jreclist; 1245 struct jrecord jreccache; 1246 struct jrecord *jrec; 1247 struct mount *mp; 1248 int error; 1249 1250 mp = ap->a_head.a_ops->head.vv_mount; 1251 jreclist_init(mp, &jreclist, &jreccache, JTYPE_MKDIR); 1252 error = vop_journal_operate_ap(&ap->a_head); 1253 if (error == 0) { 1254 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 1255 #if 0 1256 if (jo->flags & MC_JOURNAL_WANT_AUDIT) { 1257 jrecord_write_audit(jrec); 1258 } 1259 #endif 1260 jrecord_write_path(jrec, JLEAF_PATH1, ap->a_nch->ncp); 1261 jrecord_write_cred(jrec, NULL, ap->a_cred); 1262 jrecord_write_vattr(jrec, ap->a_vap); 1263 jrecord_write_path(jrec, JLEAF_PATH1, ap->a_nch->ncp); 1264 if (*ap->a_vpp) 1265 jrecord_write_vnode_ref(jrec, *ap->a_vpp); 1266 } 1267 } 1268 jreclist_done(mp, &jreclist, error); 1269 return (error); 1270 } 1271 1272 /* 1273 * Journal vop_nrmdir { a_nch, a_cred } 1274 */ 1275 static 1276 int 1277 journal_nrmdir(struct vop_nrmdir_args *ap) 1278 { 1279 struct jrecord_list jreclist; 1280 struct jrecord jreccache; 1281 struct jrecord *jrec; 1282 struct mount *mp; 1283 int error; 1284 1285 mp = ap->a_head.a_ops->head.vv_mount; 1286 if (jreclist_init(mp, &jreclist, &jreccache, JTYPE_RMDIR)) { 1287 jreclist_undo_file(&jreclist, ap->a_nch->ncp->nc_vp, 1288 JRUNDO_VATTR|JRUNDO_GETVP, 0, 0); 1289 } 1290 error = vop_journal_operate_ap(&ap->a_head); 1291 if (error == 0) { 1292 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 1293 jrecord_write_cred(jrec, NULL, ap->a_cred); 1294 jrecord_write_path(jrec, JLEAF_PATH1, ap->a_nch->ncp); 1295 } 1296 } 1297 jreclist_done(mp, &jreclist, error); 1298 return (error); 1299 } 1300 1301 /* 1302 * Journal vop_nrename { a_fnch, a_tnch, a_cred } 1303 */ 1304 static 1305 int 1306 journal_nrename(struct vop_nrename_args *ap) 1307 { 1308 struct jrecord_list jreclist; 1309 struct jrecord jreccache; 1310 struct jrecord *jrec; 1311 struct mount *mp; 1312 int error; 1313 1314 mp = ap->a_head.a_ops->head.vv_mount; 1315 if (jreclist_init(mp, &jreclist, &jreccache, JTYPE_RENAME) && 1316 ap->a_tnch->ncp->nc_vp 1317 ) { 1318 jreclist_undo_file(&jreclist, ap->a_tnch->ncp->nc_vp, 1319 JRUNDO_ALL|JRUNDO_GETVP|JRUNDO_CONDLINK, 0, -1); 1320 } 1321 error = vop_journal_operate_ap(&ap->a_head); 1322 if (error == 0) { 1323 TAILQ_FOREACH(jrec, &jreclist.list, user_entry) { 1324 jrecord_write_cred(jrec, NULL, ap->a_cred); 1325 jrecord_write_path(jrec, JLEAF_PATH1, ap->a_fnch->ncp); 1326 jrecord_write_path(jrec, JLEAF_PATH2, ap->a_tnch->ncp); 1327 } 1328 } 1329 jreclist_done(mp, &jreclist, error); 1330 return (error); 1331 } 1332 1333