1 /* 2 * Copyright (c) 2000-2001, Boris Popov 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Boris Popov. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD$ 33 * 34 */ 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/resourcevar.h> /* defines plimit structure in proc struct */ 38 #include <sys/kernel.h> 39 #include <sys/proc.h> 40 #include <sys/fcntl.h> 41 #include <sys/bio.h> 42 #include <sys/buf.h> 43 #include <sys/mount.h> 44 #include <sys/namei.h> 45 #include <sys/vnode.h> 46 #include <sys/dirent.h> 47 #include <sys/signalvar.h> 48 #include <sys/sysctl.h> 49 50 #include <vm/vm.h> 51 #if __FreeBSD_version < 400000 52 #include <vm/vm_prot.h> 53 #endif 54 #include <vm/vm_page.h> 55 #include <vm/vm_extern.h> 56 #include <vm/vm_object.h> 57 #include <vm/vm_pager.h> 58 #include <vm/vnode_pager.h> 59 /* 60 #include <sys/ioccom.h> 61 */ 62 #include <netsmb/smb.h> 63 #include <netsmb/smb_conn.h> 64 #include <netsmb/smb_subr.h> 65 66 #include <fs/smbfs/smbfs.h> 67 #include <fs/smbfs/smbfs_node.h> 68 #include <fs/smbfs/smbfs_subr.h> 69 70 /*#define SMBFS_RWGENERIC*/ 71 72 extern int smbfs_pbuf_freecnt; 73 74 static int smbfs_fastlookup = 1; 75 76 SYSCTL_DECL(_vfs_smbfs); 77 SYSCTL_INT(_vfs_smbfs, OID_AUTO, fastlookup, CTLFLAG_RW, &smbfs_fastlookup, 0, ""); 78 79 80 #define DE_SIZE (sizeof(struct dirent)) 81 82 static int 83 smbfs_readvdir(struct vnode *vp, struct uio *uio, struct ucred *cred) 84 { 85 struct dirent de; 86 struct componentname cn; 87 struct smb_cred scred; 88 struct smbfs_fctx *ctx; 89 struct vnode *newvp; 90 struct smbnode *np = VTOSMB(vp); 91 int error/*, *eofflag = ap->a_eofflag*/; 92 long offset, limit; 93 94 np = VTOSMB(vp); 95 SMBVDEBUG("dirname='%s'\n", np->n_name); 96 smb_makescred(&scred, uio->uio_procp, cred); 97 offset = uio->uio_offset / DE_SIZE; /* offset in the directory */ 98 limit = uio->uio_resid / DE_SIZE; 99 if (uio->uio_resid < DE_SIZE || uio->uio_offset < 0) 100 return EINVAL; 101 while (limit && offset < 2) { 102 limit--; 103 bzero((caddr_t)&de, DE_SIZE); 104 de.d_reclen = DE_SIZE; 105 de.d_fileno = (offset == 0) ? np->n_ino : 106 (np->n_parent ? np->n_parent->n_ino : 2); 107 if (de.d_fileno == 0) 108 de.d_fileno = 0x7ffffffd + offset; 109 de.d_namlen = offset + 1; 110 de.d_name[0] = '.'; 111 de.d_name[1] = '.'; 112 de.d_name[offset + 1] = '\0'; 113 de.d_type = DT_DIR; 114 error = uiomove((caddr_t)&de, DE_SIZE, uio); 115 if (error) 116 return error; 117 offset++; 118 uio->uio_offset += DE_SIZE; 119 } 120 if (limit == 0) 121 return 0; 122 if (offset != np->n_dirofs || np->n_dirseq == NULL) { 123 SMBVDEBUG("Reopening search %ld:%ld\n", offset, np->n_dirofs); 124 if (np->n_dirseq) { 125 smbfs_findclose(np->n_dirseq, &scred); 126 np->n_dirseq = NULL; 127 } 128 np->n_dirofs = 2; 129 error = smbfs_findopen(np, "*", 1, 130 SMB_FA_SYSTEM | SMB_FA_HIDDEN | SMB_FA_DIR, 131 &scred, &ctx); 132 if (error) { 133 SMBVDEBUG("can not open search, error = %d", error); 134 return error; 135 } 136 np->n_dirseq = ctx; 137 } else 138 ctx = np->n_dirseq; 139 while (np->n_dirofs < offset) { 140 error = smbfs_findnext(ctx, offset - np->n_dirofs++, &scred); 141 if (error) { 142 smbfs_findclose(np->n_dirseq, &scred); 143 np->n_dirseq = NULL; 144 return error == ENOENT ? 0 : error; 145 } 146 } 147 error = 0; 148 for (; limit; limit--, offset++) { 149 error = smbfs_findnext(ctx, limit, &scred); 150 if (error) 151 break; 152 np->n_dirofs++; 153 bzero((caddr_t)&de, DE_SIZE); 154 de.d_reclen = DE_SIZE; 155 de.d_fileno = ctx->f_attr.fa_ino; 156 de.d_type = (ctx->f_attr.fa_attr & SMB_FA_DIR) ? DT_DIR : DT_REG; 157 de.d_namlen = ctx->f_nmlen; 158 bcopy(ctx->f_name, de.d_name, de.d_namlen); 159 de.d_name[de.d_namlen] = '\0'; 160 if (smbfs_fastlookup) { 161 error = smbfs_nget(vp->v_mount, vp, ctx->f_name, 162 ctx->f_nmlen, &ctx->f_attr, &newvp); 163 if (!error) { 164 cn.cn_nameptr = de.d_name; 165 cn.cn_namelen = de.d_namlen; 166 cache_enter(vp, newvp, &cn); 167 vput(newvp); 168 } 169 } 170 error = uiomove((caddr_t)&de, DE_SIZE, uio); 171 if (error) 172 break; 173 } 174 if (error == ENOENT) 175 error = 0; 176 uio->uio_offset = offset * DE_SIZE; 177 return error; 178 } 179 180 int 181 smbfs_readvnode(struct vnode *vp, struct uio *uiop, struct ucred *cred) 182 { 183 struct smbmount *smp = VFSTOSMBFS(vp->v_mount); 184 struct smbnode *np = VTOSMB(vp); 185 struct proc *p; 186 struct vattr vattr; 187 struct smb_cred scred; 188 int error, lks; 189 190 if (vp->v_type != VREG && vp->v_type != VDIR) { 191 SMBFSERR("vn types other than VREG or VDIR are unsupported !\n"); 192 return EIO; 193 } 194 if (uiop->uio_resid == 0) 195 return 0; 196 if (uiop->uio_offset < 0) 197 return EINVAL; 198 /* if (uiop->uio_offset + uiop->uio_resid > smp->nm_maxfilesize) 199 return EFBIG;*/ 200 p = uiop->uio_procp; 201 if (vp->v_type == VDIR) { 202 lks = LK_EXCLUSIVE;/*lockstatus(&vp->v_lock, p);*/ 203 if (lks == LK_SHARED) 204 vn_lock(vp, LK_UPGRADE | LK_RETRY, p); 205 error = smbfs_readvdir(vp, uiop, cred); 206 if (lks == LK_SHARED) 207 vn_lock(vp, LK_DOWNGRADE | LK_RETRY, p); 208 return error; 209 } 210 211 /* biosize = SSTOCN(smp->sm_share)->sc_txmax;*/ 212 if (np->n_flag & NMODIFIED) { 213 smbfs_attr_cacheremove(vp); 214 error = VOP_GETATTR(vp, &vattr, cred, p); 215 if (error) 216 return error; 217 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 218 } else { 219 error = VOP_GETATTR(vp, &vattr, cred, p); 220 if (error) 221 return error; 222 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { 223 error = smbfs_vinvalbuf(vp, V_SAVE, cred, p, 1); 224 if (error) 225 return error; 226 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 227 } 228 } 229 smb_makescred(&scred, p, cred); 230 return smb_read(smp->sm_share, np->n_fid, uiop, &scred); 231 } 232 233 int 234 smbfs_writevnode(struct vnode *vp, struct uio *uiop, 235 struct ucred *cred, int ioflag) 236 { 237 struct smbmount *smp = VTOSMBFS(vp); 238 struct smbnode *np = VTOSMB(vp); 239 struct smb_cred scred; 240 struct proc *p; 241 int error = 0; 242 243 if (vp->v_type != VREG) { 244 SMBERROR("vn types other than VREG unsupported !\n"); 245 return EIO; 246 } 247 SMBVDEBUG("ofs=%d,resid=%d\n",(int)uiop->uio_offset, uiop->uio_resid); 248 if (uiop->uio_offset < 0) 249 return EINVAL; 250 /* if (uiop->uio_offset + uiop->uio_resid > smp->nm_maxfilesize) 251 return (EFBIG);*/ 252 p = uiop->uio_procp; 253 if (ioflag & (IO_APPEND | IO_SYNC)) { 254 if (np->n_flag & NMODIFIED) { 255 smbfs_attr_cacheremove(vp); 256 error = smbfs_vinvalbuf(vp, V_SAVE, cred, p, 1); 257 if (error) 258 return error; 259 } 260 if (ioflag & IO_APPEND) { 261 #if notyet 262 /* 263 * File size can be changed by another client 264 */ 265 smbfs_attr_cacheremove(vp); 266 error = VOP_GETATTR(vp, &vattr, cred, p); 267 if (error) return (error); 268 #endif 269 uiop->uio_offset = np->n_size; 270 } 271 } 272 if (uiop->uio_resid == 0) 273 return 0; 274 if (p && uiop->uio_offset + uiop->uio_resid > p->p_rlimit[RLIMIT_FSIZE].rlim_cur) { 275 psignal(p, SIGXFSZ); 276 return EFBIG; 277 } 278 smb_makescred(&scred, p, cred); 279 error = smb_write(smp->sm_share, np->n_fid, uiop, &scred); 280 SMBVDEBUG("after: ofs=%d,resid=%d\n",(int)uiop->uio_offset, uiop->uio_resid); 281 if (!error) { 282 if (uiop->uio_offset > np->n_size) { 283 np->n_size = uiop->uio_offset; 284 vnode_pager_setsize(vp, np->n_size); 285 } 286 } 287 return error; 288 } 289 290 /* 291 * Do an I/O operation to/from a cache block. 292 */ 293 int 294 smbfs_doio(struct buf *bp, struct ucred *cr, struct proc *p) 295 { 296 struct vnode *vp = bp->b_vp; 297 struct smbmount *smp = VFSTOSMBFS(vp->v_mount); 298 struct smbnode *np = VTOSMB(vp); 299 struct uio uio, *uiop = &uio; 300 struct iovec io; 301 struct smb_cred scred; 302 int error = 0; 303 304 uiop->uio_iov = &io; 305 uiop->uio_iovcnt = 1; 306 uiop->uio_segflg = UIO_SYSSPACE; 307 uiop->uio_procp = p; 308 309 smb_makescred(&scred, p, cr); 310 311 if (bp->b_iocmd == BIO_READ) { 312 io.iov_len = uiop->uio_resid = bp->b_bcount; 313 io.iov_base = bp->b_data; 314 uiop->uio_rw = UIO_READ; 315 switch (vp->v_type) { 316 case VREG: 317 uiop->uio_offset = ((off_t)bp->b_blkno) * DEV_BSIZE; 318 error = smb_read(smp->sm_share, np->n_fid, uiop, &scred); 319 if (error) 320 break; 321 if (uiop->uio_resid) { 322 int left = uiop->uio_resid; 323 int nread = bp->b_bcount - left; 324 if (left > 0) 325 bzero((char *)bp->b_data + nread, left); 326 } 327 break; 328 default: 329 printf("smbfs_doio: type %x unexpected\n",vp->v_type); 330 break; 331 }; 332 if (error) { 333 bp->b_error = error; 334 bp->b_ioflags |= BIO_ERROR; 335 } 336 } else { /* write */ 337 if (((bp->b_blkno * DEV_BSIZE) + bp->b_dirtyend) > np->n_size) 338 bp->b_dirtyend = np->n_size - (bp->b_blkno * DEV_BSIZE); 339 340 if (bp->b_dirtyend > bp->b_dirtyoff) { 341 io.iov_len = uiop->uio_resid = bp->b_dirtyend - bp->b_dirtyoff; 342 uiop->uio_offset = ((off_t)bp->b_blkno) * DEV_BSIZE + bp->b_dirtyoff; 343 io.iov_base = (char *)bp->b_data + bp->b_dirtyoff; 344 uiop->uio_rw = UIO_WRITE; 345 bp->b_flags |= B_WRITEINPROG; 346 error = smb_write(smp->sm_share, np->n_fid, uiop, &scred); 347 bp->b_flags &= ~B_WRITEINPROG; 348 349 /* 350 * For an interrupted write, the buffer is still valid 351 * and the write hasn't been pushed to the server yet, 352 * so we can't set BIO_ERROR and report the interruption 353 * by setting B_EINTR. For the B_ASYNC case, B_EINTR 354 * is not relevant, so the rpc attempt is essentially 355 * a noop. For the case of a V3 write rpc not being 356 * committed to stable storage, the block is still 357 * dirty and requires either a commit rpc or another 358 * write rpc with iomode == NFSV3WRITE_FILESYNC before 359 * the block is reused. This is indicated by setting 360 * the B_DELWRI and B_NEEDCOMMIT flags. 361 */ 362 if (error == EINTR 363 || (!error && (bp->b_flags & B_NEEDCOMMIT))) { 364 int s; 365 366 s = splbio(); 367 bp->b_flags &= ~(B_INVAL|B_NOCACHE); 368 if ((bp->b_flags & B_ASYNC) == 0) 369 bp->b_flags |= B_EINTR; 370 if ((bp->b_flags & B_PAGING) == 0) { 371 bdirty(bp); 372 bp->b_flags &= ~B_DONE; 373 } 374 if ((bp->b_flags & B_ASYNC) == 0) 375 bp->b_flags |= B_EINTR; 376 splx(s); 377 } else { 378 if (error) { 379 bp->b_ioflags |= BIO_ERROR; 380 bp->b_error = error; 381 } 382 bp->b_dirtyoff = bp->b_dirtyend = 0; 383 } 384 } else { 385 bp->b_resid = 0; 386 bufdone(bp); 387 return 0; 388 } 389 } 390 bp->b_resid = uiop->uio_resid; 391 bufdone(bp); 392 return error; 393 } 394 395 /* 396 * Vnode op for VM getpages. 397 * Wish wish .... get rid from multiple IO routines 398 */ 399 int 400 smbfs_getpages(ap) 401 struct vop_getpages_args /* { 402 struct vnode *a_vp; 403 vm_page_t *a_m; 404 int a_count; 405 int a_reqpage; 406 vm_ooffset_t a_offset; 407 } */ *ap; 408 { 409 #ifdef SMBFS_RWGENERIC 410 return vop_stdgetpages(ap); 411 #else 412 int i, error, nextoff, size, toff, npages, count; 413 struct uio uio; 414 struct iovec iov; 415 vm_offset_t kva; 416 struct buf *bp; 417 struct vnode *vp; 418 struct proc *p; 419 struct ucred *cred; 420 struct smbmount *smp; 421 struct smbnode *np; 422 struct smb_cred scred; 423 vm_page_t *pages; 424 425 vp = ap->a_vp; 426 p = curproc; /* XXX */ 427 cred = curproc->p_ucred; /* XXX */ 428 np = VTOSMB(vp); 429 smp = VFSTOSMBFS(vp->v_mount); 430 pages = ap->a_m; 431 count = ap->a_count; 432 433 if (vp->v_object == NULL) { 434 printf("smbfs_getpages: called with non-merged cache vnode??\n"); 435 return VM_PAGER_ERROR; 436 } 437 smb_makescred(&scred, p, cred); 438 439 #if __FreeBSD_version >= 400000 440 bp = getpbuf(&smbfs_pbuf_freecnt); 441 #else 442 bp = getpbuf(); 443 #endif 444 npages = btoc(count); 445 kva = (vm_offset_t) bp->b_data; 446 pmap_qenter(kva, pages, npages); 447 448 iov.iov_base = (caddr_t) kva; 449 iov.iov_len = count; 450 uio.uio_iov = &iov; 451 uio.uio_iovcnt = 1; 452 uio.uio_offset = IDX_TO_OFF(pages[0]->pindex); 453 uio.uio_resid = count; 454 uio.uio_segflg = UIO_SYSSPACE; 455 uio.uio_rw = UIO_READ; 456 uio.uio_procp = p; 457 458 error = smb_read(smp->sm_share, np->n_fid, &uio, &scred); 459 pmap_qremove(kva, npages); 460 461 #if __FreeBSD_version >= 400000 462 relpbuf(bp, &smbfs_pbuf_freecnt); 463 #else 464 relpbuf(bp); 465 #endif 466 467 if (error && (uio.uio_resid == count)) { 468 printf("smbfs_getpages: error %d\n",error); 469 for (i = 0; i < npages; i++) { 470 if (ap->a_reqpage != i) 471 vm_page_free(pages[i]); 472 } 473 return VM_PAGER_ERROR; 474 } 475 476 size = count - uio.uio_resid; 477 478 for (i = 0, toff = 0; i < npages; i++, toff = nextoff) { 479 vm_page_t m; 480 nextoff = toff + PAGE_SIZE; 481 m = pages[i]; 482 483 m->flags &= ~PG_ZERO; 484 485 if (nextoff <= size) { 486 m->valid = VM_PAGE_BITS_ALL; 487 m->dirty = 0; 488 } else { 489 int nvalid = ((size + DEV_BSIZE - 1) - toff) & ~(DEV_BSIZE - 1); 490 vm_page_set_validclean(m, 0, nvalid); 491 } 492 493 if (i != ap->a_reqpage) { 494 /* 495 * Whether or not to leave the page activated is up in 496 * the air, but we should put the page on a page queue 497 * somewhere (it already is in the object). Result: 498 * It appears that emperical results show that 499 * deactivating pages is best. 500 */ 501 502 /* 503 * Just in case someone was asking for this page we 504 * now tell them that it is ok to use. 505 */ 506 if (!error) { 507 if (m->flags & PG_WANTED) 508 vm_page_activate(m); 509 else 510 vm_page_deactivate(m); 511 vm_page_wakeup(m); 512 } else { 513 vm_page_free(m); 514 } 515 } 516 } 517 return 0; 518 #endif /* SMBFS_RWGENERIC */ 519 } 520 521 /* 522 * Vnode op for VM putpages. 523 * possible bug: all IO done in sync mode 524 * Note that vop_close always invalidate pages before close, so it's 525 * not necessary to open vnode. 526 */ 527 int 528 smbfs_putpages(ap) 529 struct vop_putpages_args /* { 530 struct vnode *a_vp; 531 vm_page_t *a_m; 532 int a_count; 533 int a_sync; 534 int *a_rtvals; 535 vm_ooffset_t a_offset; 536 } */ *ap; 537 { 538 int error; 539 struct vnode *vp = ap->a_vp; 540 struct proc *p; 541 struct ucred *cred; 542 543 #ifdef SMBFS_RWGENERIC 544 p = curproc; /* XXX */ 545 cred = p->p_ucred; /* XXX */ 546 VOP_OPEN(vp, FWRITE, cred, p); 547 error = vop_stdputpages(ap); 548 VOP_CLOSE(vp, FWRITE, cred, p); 549 return error; 550 #else 551 struct uio uio; 552 struct iovec iov; 553 vm_offset_t kva; 554 struct buf *bp; 555 int i, npages, count; 556 int *rtvals; 557 struct smbmount *smp; 558 struct smbnode *np; 559 struct smb_cred scred; 560 vm_page_t *pages; 561 562 p = curproc; /* XXX */ 563 cred = p->p_ucred; /* XXX */ 564 /* VOP_OPEN(vp, FWRITE, cred, p);*/ 565 np = VTOSMB(vp); 566 smp = VFSTOSMBFS(vp->v_mount); 567 pages = ap->a_m; 568 count = ap->a_count; 569 rtvals = ap->a_rtvals; 570 npages = btoc(count); 571 572 for (i = 0; i < npages; i++) { 573 rtvals[i] = VM_PAGER_AGAIN; 574 } 575 576 #if __FreeBSD_version >= 400000 577 bp = getpbuf(&smbfs_pbuf_freecnt); 578 #else 579 bp = getpbuf(); 580 #endif 581 kva = (vm_offset_t) bp->b_data; 582 pmap_qenter(kva, pages, npages); 583 584 iov.iov_base = (caddr_t) kva; 585 iov.iov_len = count; 586 uio.uio_iov = &iov; 587 uio.uio_iovcnt = 1; 588 uio.uio_offset = IDX_TO_OFF(pages[0]->pindex); 589 uio.uio_resid = count; 590 uio.uio_segflg = UIO_SYSSPACE; 591 uio.uio_rw = UIO_WRITE; 592 uio.uio_procp = p; 593 SMBVDEBUG("ofs=%d,resid=%d\n",(int)uio.uio_offset, uio.uio_resid); 594 595 smb_makescred(&scred, p, cred); 596 error = smb_write(smp->sm_share, np->n_fid, &uio, &scred); 597 /* VOP_CLOSE(vp, FWRITE, cred, p);*/ 598 SMBVDEBUG("paged write done: %d\n", error); 599 600 pmap_qremove(kva, npages); 601 #if __FreeBSD_version >= 400000 602 relpbuf(bp, &smbfs_pbuf_freecnt); 603 #else 604 relpbuf(bp); 605 #endif 606 607 if (!error) { 608 int nwritten = round_page(count - uio.uio_resid) / PAGE_SIZE; 609 for (i = 0; i < nwritten; i++) { 610 rtvals[i] = VM_PAGER_OK; 611 pages[i]->dirty = 0; 612 } 613 } 614 return rtvals[0]; 615 #endif /* SMBFS_RWGENERIC */ 616 } 617 618 /* 619 * Flush and invalidate all dirty buffers. If another process is already 620 * doing the flush, just wait for completion. 621 */ 622 int 623 smbfs_vinvalbuf(vp, flags, cred, p, intrflg) 624 struct vnode *vp; 625 int flags; 626 struct ucred *cred; 627 struct proc *p; 628 int intrflg; 629 { 630 struct smbnode *np = VTOSMB(vp); 631 int error = 0, slpflag, slptimeo; 632 633 if (vp->v_flag & VXLOCK) 634 return 0; 635 if (intrflg) { 636 slpflag = PCATCH; 637 slptimeo = 2 * hz; 638 } else { 639 slpflag = 0; 640 slptimeo = 0; 641 } 642 while (np->n_flag & NFLUSHINPROG) { 643 np->n_flag |= NFLUSHWANT; 644 error = tsleep((caddr_t)&np->n_flag, PRIBIO + 2, "smfsvinv", slptimeo); 645 error = smb_proc_intr(p); 646 if (error == EINTR && intrflg) 647 return EINTR; 648 } 649 np->n_flag |= NFLUSHINPROG; 650 error = vinvalbuf(vp, flags, cred, p, slpflag, 0); 651 while (error) { 652 if (intrflg && (error == ERESTART || error == EINTR)) { 653 np->n_flag &= ~NFLUSHINPROG; 654 if (np->n_flag & NFLUSHWANT) { 655 np->n_flag &= ~NFLUSHWANT; 656 wakeup((caddr_t)&np->n_flag); 657 } 658 return EINTR; 659 } 660 error = vinvalbuf(vp, flags, cred, p, slpflag, 0); 661 } 662 np->n_flag &= ~(NMODIFIED | NFLUSHINPROG); 663 if (np->n_flag & NFLUSHWANT) { 664 np->n_flag &= ~NFLUSHWANT; 665 wakeup((caddr_t)&np->n_flag); 666 } 667 return (error); 668 } 669