ulfs_readwrite.c revision 1.13
1 /* $NetBSD: ulfs_readwrite.c,v 1.13 2015/03/28 17:23:42 maxv Exp $ */ 2 /* from NetBSD: ufs_readwrite.c,v 1.105 2013/01/22 09:39:18 dholland Exp */ 3 4 /*- 5 * Copyright (c) 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 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 the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its 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 REGENTS 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 REGENTS 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 * @(#)ufs_readwrite.c 8.11 (Berkeley) 5/8/95 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(1, "$NetBSD: ulfs_readwrite.c,v 1.13 2015/03/28 17:23:42 maxv Exp $"); 37 38 #ifdef LFS_READWRITE 39 #define FS struct lfs 40 #define I_FS i_lfs 41 #define READ lfs_read 42 #define READ_S "lfs_read" 43 #define WRITE lfs_write 44 #define WRITE_S "lfs_write" 45 #define BUFRD lfs_bufrd 46 #define BUFWR lfs_bufwr 47 #define fs_bsize lfs_bsize 48 #define fs_bmask lfs_bmask 49 #else 50 #define FS struct fs 51 #define I_FS i_fs 52 #define READ ffs_read 53 #define READ_S "ffs_read" 54 #define WRITE ffs_write 55 #define WRITE_S "ffs_write" 56 #define BUFRD ffs_bufrd 57 #define BUFWR ffs_bufwr 58 #endif 59 60 static int ulfs_post_read_update(struct vnode *, int, int); 61 static int ulfs_post_write_update(struct vnode *, struct uio *, int, 62 kauth_cred_t, off_t, int, int, int); 63 64 /* 65 * Vnode op for reading. 66 */ 67 /* ARGSUSED */ 68 int 69 READ(void *v) 70 { 71 struct vop_read_args /* { 72 struct vnode *a_vp; 73 struct uio *a_uio; 74 int a_ioflag; 75 kauth_cred_t a_cred; 76 } */ *ap = v; 77 struct vnode *vp; 78 struct inode *ip; 79 struct uio *uio; 80 FS *fs; 81 vsize_t bytelen; 82 int error, ioflag, advice; 83 84 vp = ap->a_vp; 85 ip = VTOI(vp); 86 fs = ip->I_FS; 87 uio = ap->a_uio; 88 ioflag = ap->a_ioflag; 89 error = 0; 90 91 KASSERT(uio->uio_rw == UIO_READ); 92 KASSERT(vp->v_type == VREG || vp->v_type == VDIR); 93 94 /* XXX Eliminate me by refusing directory reads from userland. */ 95 if (vp->v_type == VDIR) 96 return BUFRD(vp, uio, ioflag, ap->a_cred); 97 #ifdef LFS_READWRITE 98 /* XXX Eliminate me by using ufs_bufio in lfs. */ 99 if (vp->v_type == VREG && ip->i_number == LFS_IFILE_INUM) 100 return BUFRD(vp, uio, ioflag, ap->a_cred); 101 #endif 102 if ((u_int64_t)uio->uio_offset > fs->um_maxfilesize) 103 return (EFBIG); 104 if (uio->uio_resid == 0) 105 return (0); 106 107 #ifndef LFS_READWRITE 108 if ((ip->i_flags & (SF_SNAPSHOT | SF_SNAPINVAL)) == SF_SNAPSHOT) 109 return ffs_snapshot_read(vp, uio, ioflag); 110 #endif /* !LFS_READWRITE */ 111 112 fstrans_start(vp->v_mount, FSTRANS_SHARED); 113 114 if (uio->uio_offset >= ip->i_size) 115 goto out; 116 117 KASSERT(vp->v_type == VREG); 118 advice = IO_ADV_DECODE(ap->a_ioflag); 119 while (uio->uio_resid > 0) { 120 if (ioflag & IO_DIRECT) { 121 genfs_directio(vp, uio, ioflag); 122 } 123 bytelen = MIN(ip->i_size - uio->uio_offset, uio->uio_resid); 124 if (bytelen == 0) 125 break; 126 error = ubc_uiomove(&vp->v_uobj, uio, bytelen, advice, 127 UBC_READ | UBC_PARTIALOK | UBC_UNMAP_FLAG(vp)); 128 if (error) 129 break; 130 } 131 132 out: 133 error = ulfs_post_read_update(vp, ap->a_ioflag, error); 134 fstrans_done(vp->v_mount); 135 return (error); 136 } 137 138 /* 139 * UFS op for reading via the buffer cache 140 */ 141 int 142 BUFRD(struct vnode *vp, struct uio *uio, int ioflag, kauth_cred_t cred) 143 { 144 struct inode *ip; 145 FS *fs; 146 struct buf *bp; 147 daddr_t lbn, nextlbn; 148 off_t bytesinfile; 149 long size, xfersize, blkoffset; 150 int error; 151 152 KASSERT(VOP_ISLOCKED(vp)); 153 KASSERT(vp->v_type == VDIR || vp->v_type == VLNK || 154 vp->v_type == VREG); 155 KASSERT(uio->uio_rw == UIO_READ); 156 157 ip = VTOI(vp); 158 fs = ip->I_FS; 159 error = 0; 160 161 KASSERT(vp->v_type != VLNK || ip->i_size < fs->um_maxsymlinklen); 162 KASSERT(vp->v_type != VLNK || fs->um_maxsymlinklen != 0 || 163 DIP(ip, blocks) == 0); 164 KASSERT(vp->v_type != VREG || vp == fs->lfs_ivnode); 165 KASSERT(vp->v_type != VREG || ip->i_number == LFS_IFILE_INUM); 166 167 if (uio->uio_offset > fs->um_maxfilesize) 168 return EFBIG; 169 if (uio->uio_resid == 0) 170 return 0; 171 172 #ifndef LFS_READWRITE 173 KASSERT(!ISSET(ip->i_flags, (SF_SNAPSHOT | SF_SNAPINVAL))); 174 #endif 175 176 fstrans_start(vp->v_mount, FSTRANS_SHARED); 177 178 if (uio->uio_offset >= ip->i_size) 179 goto out; 180 181 for (error = 0, bp = NULL; uio->uio_resid > 0; bp = NULL) { 182 bytesinfile = ip->i_size - uio->uio_offset; 183 if (bytesinfile <= 0) 184 break; 185 lbn = lfs_lblkno(fs, uio->uio_offset); 186 nextlbn = lbn + 1; 187 size = lfs_blksize(fs, ip, lbn); 188 blkoffset = lfs_blkoff(fs, uio->uio_offset); 189 xfersize = MIN(MIN(fs->fs_bsize - blkoffset, uio->uio_resid), 190 bytesinfile); 191 192 if (lfs_lblktosize(fs, nextlbn) >= ip->i_size) 193 error = bread(vp, lbn, size, NOCRED, 0, &bp); 194 else { 195 int nextsize = lfs_blksize(fs, ip, nextlbn); 196 error = breadn(vp, lbn, 197 size, &nextlbn, &nextsize, 1, 0, &bp); 198 } 199 if (error) 200 break; 201 202 /* 203 * We should only get non-zero b_resid when an I/O error 204 * has occurred, which should cause us to break above. 205 * However, if the short read did not cause an error, 206 * then we want to ensure that we do not uiomove bad 207 * or uninitialized data. 208 */ 209 size -= bp->b_resid; 210 if (size < xfersize) { 211 if (size == 0) 212 break; 213 xfersize = size; 214 } 215 error = uiomove((char *)bp->b_data + blkoffset, xfersize, uio); 216 if (error) 217 break; 218 brelse(bp, 0); 219 } 220 if (bp != NULL) 221 brelse(bp, 0); 222 223 out: 224 error = ulfs_post_read_update(vp, ioflag, error); 225 fstrans_done(vp->v_mount); 226 return (error); 227 } 228 229 static int 230 ulfs_post_read_update(struct vnode *vp, int ioflag, int error) 231 { 232 struct inode *ip = VTOI(vp); 233 234 if (!(vp->v_mount->mnt_flag & MNT_NOATIME)) { 235 ip->i_flag |= IN_ACCESS; 236 if ((ioflag & IO_SYNC) == IO_SYNC) { 237 error = lfs_update(vp, NULL, NULL, UPDATE_WAIT); 238 } 239 } 240 241 return error; 242 } 243 244 /* 245 * Vnode op for writing. 246 */ 247 int 248 WRITE(void *v) 249 { 250 struct vop_write_args /* { 251 struct vnode *a_vp; 252 struct uio *a_uio; 253 int a_ioflag; 254 kauth_cred_t a_cred; 255 } */ *ap = v; 256 struct vnode *vp; 257 struct uio *uio; 258 struct inode *ip; 259 FS *fs; 260 kauth_cred_t cred; 261 off_t osize, origoff, oldoff, preallocoff, endallocoff, nsize; 262 int blkoffset, error, flags, ioflag, resid; 263 int aflag; 264 int extended=0; 265 vsize_t bytelen; 266 bool async; 267 268 cred = ap->a_cred; 269 ioflag = ap->a_ioflag; 270 uio = ap->a_uio; 271 vp = ap->a_vp; 272 ip = VTOI(vp); 273 274 KASSERT(vp->v_size == ip->i_size); 275 KASSERT(uio->uio_rw == UIO_WRITE); 276 KASSERT(vp->v_type == VREG); 277 278 if (ioflag & IO_APPEND) 279 uio->uio_offset = ip->i_size; 280 if ((ip->i_flags & APPEND) && uio->uio_offset != ip->i_size) 281 return (EPERM); 282 283 fs = ip->I_FS; 284 if (uio->uio_offset < 0 || 285 (u_int64_t)uio->uio_offset + uio->uio_resid > fs->um_maxfilesize) 286 return (EFBIG); 287 #ifdef LFS_READWRITE 288 /* Disallow writes to the Ifile, even if noschg flag is removed */ 289 /* XXX can this go away when the Ifile is no longer in the namespace? */ 290 if (vp == fs->lfs_ivnode) 291 return (EPERM); 292 #endif 293 if (uio->uio_resid == 0) 294 return (0); 295 296 fstrans_start(vp->v_mount, FSTRANS_SHARED); 297 298 flags = ioflag & IO_SYNC ? B_SYNC : 0; 299 async = vp->v_mount->mnt_flag & MNT_ASYNC; 300 origoff = uio->uio_offset; 301 resid = uio->uio_resid; 302 osize = ip->i_size; 303 error = 0; 304 305 KASSERT(vp->v_type == VREG); 306 307 #ifdef LFS_READWRITE 308 async = true; 309 lfs_availwait(fs, lfs_btofsb(fs, uio->uio_resid)); 310 lfs_check(vp, LFS_UNUSED_LBN, 0); 311 #endif /* !LFS_READWRITE */ 312 313 preallocoff = round_page(lfs_blkroundup(fs, MAX(osize, uio->uio_offset))); 314 aflag = ioflag & IO_SYNC ? B_SYNC : 0; 315 nsize = MAX(osize, uio->uio_offset + uio->uio_resid); 316 endallocoff = nsize - lfs_blkoff(fs, nsize); 317 318 /* 319 * if we're increasing the file size, deal with expanding 320 * the fragment if there is one. 321 */ 322 323 if (nsize > osize && lfs_lblkno(fs, osize) < ULFS_NDADDR && 324 lfs_lblkno(fs, osize) != lfs_lblkno(fs, nsize) && 325 lfs_blkroundup(fs, osize) != osize) { 326 off_t eob; 327 328 eob = lfs_blkroundup(fs, osize); 329 uvm_vnp_setwritesize(vp, eob); 330 error = ulfs_balloc_range(vp, osize, eob - osize, cred, aflag); 331 if (error) 332 goto out; 333 if (flags & B_SYNC) { 334 mutex_enter(vp->v_interlock); 335 VOP_PUTPAGES(vp, trunc_page(osize & fs->fs_bmask), 336 round_page(eob), 337 PGO_CLEANIT | PGO_SYNCIO | PGO_JOURNALLOCKED); 338 } 339 } 340 341 while (uio->uio_resid > 0) { 342 int ubc_flags = UBC_WRITE; 343 bool overwrite; /* if we're overwrite a whole block */ 344 off_t newoff; 345 346 if (ioflag & IO_DIRECT) { 347 genfs_directio(vp, uio, ioflag | IO_JOURNALLOCKED); 348 } 349 350 oldoff = uio->uio_offset; 351 blkoffset = lfs_blkoff(fs, uio->uio_offset); 352 bytelen = MIN(fs->fs_bsize - blkoffset, uio->uio_resid); 353 if (bytelen == 0) { 354 break; 355 } 356 357 /* 358 * if we're filling in a hole, allocate the blocks now and 359 * initialize the pages first. if we're extending the file, 360 * we can safely allocate blocks without initializing pages 361 * since the new blocks will be inaccessible until the write 362 * is complete. 363 */ 364 overwrite = uio->uio_offset >= preallocoff && 365 uio->uio_offset < endallocoff; 366 if (!overwrite && (vp->v_vflag & VV_MAPPED) == 0 && 367 lfs_blkoff(fs, uio->uio_offset) == 0 && 368 (uio->uio_offset & PAGE_MASK) == 0) { 369 vsize_t len; 370 371 len = trunc_page(bytelen); 372 len -= lfs_blkoff(fs, len); 373 if (len > 0) { 374 overwrite = true; 375 bytelen = len; 376 } 377 } 378 379 newoff = oldoff + bytelen; 380 if (vp->v_size < newoff) { 381 uvm_vnp_setwritesize(vp, newoff); 382 } 383 384 if (!overwrite) { 385 error = ulfs_balloc_range(vp, uio->uio_offset, bytelen, 386 cred, aflag); 387 if (error) 388 break; 389 } else { 390 genfs_node_wrlock(vp); 391 error = GOP_ALLOC(vp, uio->uio_offset, bytelen, 392 aflag, cred); 393 genfs_node_unlock(vp); 394 if (error) 395 break; 396 ubc_flags |= UBC_FAULTBUSY; 397 } 398 399 /* 400 * copy the data. 401 */ 402 403 error = ubc_uiomove(&vp->v_uobj, uio, bytelen, 404 IO_ADV_DECODE(ioflag), ubc_flags | UBC_UNMAP_FLAG(vp)); 405 406 /* 407 * update UVM's notion of the size now that we've 408 * copied the data into the vnode's pages. 409 * 410 * we should update the size even when uiomove failed. 411 */ 412 413 if (vp->v_size < newoff) { 414 uvm_vnp_setsize(vp, newoff); 415 extended = 1; 416 } 417 418 if (error) 419 break; 420 421 /* 422 * flush what we just wrote if necessary. 423 * XXXUBC simplistic async flushing. 424 */ 425 426 #ifndef LFS_READWRITE 427 if (!async && oldoff >> 16 != uio->uio_offset >> 16) { 428 mutex_enter(vp->v_interlock); 429 error = VOP_PUTPAGES(vp, (oldoff >> 16) << 16, 430 (uio->uio_offset >> 16) << 16, 431 PGO_CLEANIT | PGO_JOURNALLOCKED | PGO_LAZY); 432 if (error) 433 break; 434 } 435 #else 436 __USE(async); 437 #endif 438 } 439 if (error == 0 && ioflag & IO_SYNC) { 440 mutex_enter(vp->v_interlock); 441 error = VOP_PUTPAGES(vp, trunc_page(origoff & fs->fs_bmask), 442 round_page(lfs_blkroundup(fs, uio->uio_offset)), 443 PGO_CLEANIT | PGO_SYNCIO | PGO_JOURNALLOCKED); 444 } 445 446 out: 447 error = ulfs_post_write_update(vp, uio, ioflag, cred, osize, resid, 448 extended, error); 449 fstrans_done(vp->v_mount); 450 451 return (error); 452 } 453 454 /* 455 * UFS op for writing via the buffer cache 456 */ 457 int 458 BUFWR(struct vnode *vp, struct uio *uio, int ioflag, kauth_cred_t cred) 459 { 460 struct inode *ip; 461 FS *fs; 462 int flags; 463 struct buf *bp; 464 off_t osize, origoff; 465 int resid, xfersize, size, blkoffset; 466 daddr_t lbn; 467 int extended=0; 468 int error; 469 #ifdef LFS_READWRITE 470 bool need_unreserve = false; 471 #endif 472 473 KASSERT(ISSET(ioflag, IO_NODELOCKED)); 474 KASSERT(VOP_ISLOCKED(vp) == LK_EXCLUSIVE); 475 KASSERT(vp->v_type == VDIR || vp->v_type == VLNK); 476 KASSERT(vp->v_type != VDIR || ISSET(ioflag, IO_SYNC)); 477 KASSERT(uio->uio_rw == UIO_WRITE); 478 479 ip = VTOI(vp); 480 fs = ip->I_FS; 481 482 KASSERT(vp->v_size == ip->i_size); 483 484 if (uio->uio_offset < 0 || 485 uio->uio_resid > fs->um_maxfilesize || 486 uio->uio_offset > (fs->um_maxfilesize - uio->uio_resid)) 487 return EFBIG; 488 #ifdef LFS_READWRITE 489 KASSERT(vp != fs->lfs_ivnode); 490 #endif 491 if (uio->uio_resid == 0) 492 return 0; 493 494 fstrans_start(vp->v_mount, FSTRANS_SHARED); 495 496 flags = ioflag & IO_SYNC ? B_SYNC : 0; 497 origoff = uio->uio_offset; 498 resid = uio->uio_resid; 499 osize = ip->i_size; 500 error = 0; 501 502 KASSERT(vp->v_type != VREG); 503 504 #ifdef LFS_READWRITE 505 lfs_availwait(fs, lfs_btofsb(fs, uio->uio_resid)); 506 lfs_check(vp, LFS_UNUSED_LBN, 0); 507 #endif /* !LFS_READWRITE */ 508 509 /* XXX Should never have pages cached here. */ 510 mutex_enter(vp->v_interlock); 511 VOP_PUTPAGES(vp, trunc_page(origoff), round_page(origoff + resid), 512 PGO_CLEANIT | PGO_FREE | PGO_SYNCIO | PGO_JOURNALLOCKED); 513 while (uio->uio_resid > 0) { 514 lbn = lfs_lblkno(fs, uio->uio_offset); 515 blkoffset = lfs_blkoff(fs, uio->uio_offset); 516 xfersize = MIN(fs->fs_bsize - blkoffset, uio->uio_resid); 517 if (fs->fs_bsize > xfersize) 518 flags |= B_CLRBUF; 519 else 520 flags &= ~B_CLRBUF; 521 522 #ifdef LFS_READWRITE 523 error = lfs_reserve(fs, vp, NULL, 524 lfs_btofsb(fs, (ULFS_NIADDR + 1) << fs->lfs_bshift)); 525 if (error) 526 break; 527 need_unreserve = true; 528 #endif 529 error = lfs_balloc(vp, uio->uio_offset, xfersize, cred, flags, 530 &bp); 531 532 if (error) 533 break; 534 if (uio->uio_offset + xfersize > ip->i_size) { 535 ip->i_size = uio->uio_offset + xfersize; 536 DIP_ASSIGN(ip, size, ip->i_size); 537 uvm_vnp_setsize(vp, ip->i_size); 538 extended = 1; 539 } 540 size = lfs_blksize(fs, ip, lbn) - bp->b_resid; 541 if (xfersize > size) 542 xfersize = size; 543 544 error = uiomove((char *)bp->b_data + blkoffset, xfersize, uio); 545 546 /* 547 * if we didn't clear the block and the uiomove failed, 548 * the buf will now contain part of some other file, 549 * so we need to invalidate it. 550 */ 551 if (error && (flags & B_CLRBUF) == 0) { 552 brelse(bp, BC_INVAL); 553 break; 554 } 555 #ifdef LFS_READWRITE 556 (void)VOP_BWRITE(bp->b_vp, bp); 557 lfs_reserve(fs, vp, NULL, 558 -lfs_btofsb(fs, (ULFS_NIADDR + 1) << fs->lfs_bshift)); 559 need_unreserve = false; 560 #else 561 if (ioflag & IO_SYNC) 562 (void)bwrite(bp); 563 else if (xfersize + blkoffset == fs->fs_bsize) 564 bawrite(bp); 565 else 566 bdwrite(bp); 567 #endif 568 if (error || xfersize == 0) 569 break; 570 } 571 #ifdef LFS_READWRITE 572 if (need_unreserve) { 573 lfs_reserve(fs, vp, NULL, 574 -lfs_btofsb(fs, (ULFS_NIADDR + 1) << fs->lfs_bshift)); 575 } 576 #endif 577 578 error = ulfs_post_write_update(vp, uio, ioflag, cred, osize, resid, 579 extended, error); 580 fstrans_done(vp->v_mount); 581 582 return (error); 583 } 584 585 static int 586 ulfs_post_write_update(struct vnode *vp, struct uio *uio, int ioflag, 587 kauth_cred_t cred, off_t osize, int resid, int extended, int error) 588 { 589 struct inode *ip = VTOI(vp); 590 591 /* Trigger ctime and mtime updates, and atime if MNT_RELATIME. */ 592 ip->i_flag |= IN_CHANGE | IN_UPDATE; 593 if (vp->v_mount->mnt_flag & MNT_RELATIME) 594 ip->i_flag |= IN_ACCESS; 595 596 /* 597 * If we successfully wrote any data and we are not the superuser, 598 * we clear the setuid and setgid bits as a precaution against 599 * tampering. 600 */ 601 if (resid > uio->uio_resid && cred) { 602 if (ip->i_mode & ISUID) { 603 if (kauth_authorize_vnode(cred, 604 KAUTH_VNODE_RETAIN_SUID, vp, NULL, EPERM) != 0) { 605 ip->i_mode &= ~ISUID; 606 DIP_ASSIGN(ip, mode, ip->i_mode); 607 } 608 } 609 610 if (ip->i_mode & ISGID) { 611 if (kauth_authorize_vnode(cred, 612 KAUTH_VNODE_RETAIN_SGID, vp, NULL, EPERM) != 0) { 613 ip->i_mode &= ~ISGID; 614 DIP_ASSIGN(ip, mode, ip->i_mode); 615 } 616 } 617 } 618 619 /* If we successfully wrote anything, notify kevent listeners. */ 620 if (resid > uio->uio_resid) 621 VN_KNOTE(vp, NOTE_WRITE | (extended ? NOTE_EXTEND : 0)); 622 623 /* 624 * Update the size on disk: truncate back to original size on 625 * error, or reflect the new size on success. 626 */ 627 if (error) { 628 (void) lfs_truncate(vp, osize, ioflag & IO_SYNC, cred); 629 uio->uio_offset -= resid - uio->uio_resid; 630 uio->uio_resid = resid; 631 } else if (resid > uio->uio_resid && (ioflag & IO_SYNC) == IO_SYNC) { 632 error = lfs_update(vp, NULL, NULL, UPDATE_WAIT); 633 } else { 634 /* nothing */ 635 } 636 637 /* Make sure the vnode uvm size matches the inode file size. */ 638 KASSERT(vp->v_size == ip->i_size); 639 640 return error; 641 } 642
Indexes created Tue Sep 30 20:09:53 GMT 2025