ulfs_vnops.c revision 1.11
1 /* $NetBSD: ulfs_vnops.c,v 1.11 2013/06/08 21:40:27 dholland Exp $ */ 2 /* from NetBSD: ufs_vnops.c,v 1.213 2013/06/08 05:47:02 kardel Exp */ 3 4 /*- 5 * Copyright (c) 2008 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Wasabi Systems, Inc. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1982, 1986, 1989, 1993, 1995 35 * The Regents of the University of California. All rights reserved. 36 * (c) UNIX System Laboratories, Inc. 37 * All or some portions of this file are derived from material licensed 38 * to the University of California by American Telephone and Telegraph 39 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 40 * the permission of UNIX System Laboratories, Inc. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)ufs_vnops.c 8.28 (Berkeley) 7/31/95 67 */ 68 69 #include <sys/cdefs.h> 70 __KERNEL_RCSID(0, "$NetBSD: ulfs_vnops.c,v 1.11 2013/06/08 21:40:27 dholland Exp $"); 71 72 #if defined(_KERNEL_OPT) 73 #include "opt_lfs.h" 74 #include "opt_quota.h" 75 #endif 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/namei.h> 80 #include <sys/resourcevar.h> 81 #include <sys/kernel.h> 82 #include <sys/file.h> 83 #include <sys/stat.h> 84 #include <sys/buf.h> 85 #include <sys/proc.h> 86 #include <sys/mount.h> 87 #include <sys/vnode.h> 88 #include <sys/kmem.h> 89 #include <sys/malloc.h> 90 #include <sys/dirent.h> 91 #include <sys/lockf.h> 92 #include <sys/kauth.h> 93 #include <sys/wapbl.h> 94 #include <sys/fstrans.h> 95 96 #include <miscfs/specfs/specdev.h> 97 #include <miscfs/fifofs/fifo.h> 98 #include <miscfs/genfs/genfs.h> 99 100 #include <ufs/lfs/ulfs_inode.h> 101 #include <ufs/lfs/ulfs_dir.h> 102 #include <ufs/lfs/ulfsmount.h> 103 #include <ufs/lfs/ulfs_bswap.h> 104 #include <ufs/lfs/ulfs_extern.h> 105 #include <ufs/lfs/ulfs_wapbl.h> 106 #ifdef LFS_DIRHASH 107 #include <ufs/lfs/ulfs_dirhash.h> 108 #endif 109 #include <ufs/lfs/lfs_extern.h> 110 #include <ufs/lfs/lfs.h> 111 112 #include <uvm/uvm.h> 113 114 static int ulfs_chmod(struct vnode *, int, kauth_cred_t, struct lwp *); 115 static int ulfs_chown(struct vnode *, uid_t, gid_t, kauth_cred_t, 116 struct lwp *); 117 118 /* 119 * A virgin directory (no blushing please). 120 */ 121 static const struct lfs_dirtemplate mastertemplate = { 122 0, 12, LFS_DT_DIR, 1, ".", 123 0, LFS_DIRBLKSIZ - 12, LFS_DT_DIR, 2, ".." 124 }; 125 126 /* 127 * Create a regular file 128 */ 129 int 130 ulfs_create(void *v) 131 { 132 struct vop_create_args /* { 133 struct vnode *a_dvp; 134 struct vnode **a_vpp; 135 struct componentname *a_cnp; 136 struct vattr *a_vap; 137 } */ *ap = v; 138 int error; 139 struct vnode *dvp = ap->a_dvp; 140 struct ulfs_lookup_results *ulr; 141 142 /* XXX should handle this material another way */ 143 ulr = &VTOI(dvp)->i_crap; 144 ULFS_CHECK_CRAPCOUNTER(VTOI(dvp)); 145 146 /* 147 * ULFS_WAPBL_BEGIN1(dvp->v_mount, dvp) performed by successful 148 * ulfs_makeinode 149 */ 150 fstrans_start(dvp->v_mount, FSTRANS_SHARED); 151 error = 152 ulfs_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode), 153 dvp, ulr, ap->a_vpp, ap->a_cnp); 154 if (error) { 155 fstrans_done(dvp->v_mount); 156 return (error); 157 } 158 ULFS_WAPBL_END1(dvp->v_mount, dvp); 159 fstrans_done(dvp->v_mount); 160 VN_KNOTE(dvp, NOTE_WRITE); 161 return (0); 162 } 163 164 /* 165 * Mknod vnode call 166 */ 167 /* ARGSUSED */ 168 int 169 ulfs_mknod(void *v) 170 { 171 struct vop_mknod_args /* { 172 struct vnode *a_dvp; 173 struct vnode **a_vpp; 174 struct componentname *a_cnp; 175 struct vattr *a_vap; 176 } */ *ap = v; 177 struct vattr *vap; 178 struct vnode **vpp; 179 struct inode *ip; 180 int error; 181 struct mount *mp; 182 ino_t ino; 183 struct ulfs_lookup_results *ulr; 184 185 vap = ap->a_vap; 186 vpp = ap->a_vpp; 187 188 /* XXX should handle this material another way */ 189 ulr = &VTOI(ap->a_dvp)->i_crap; 190 ULFS_CHECK_CRAPCOUNTER(VTOI(ap->a_dvp)); 191 192 /* 193 * ULFS_WAPBL_BEGIN1(dvp->v_mount, dvp) performed by successful 194 * ulfs_makeinode 195 */ 196 fstrans_start(ap->a_dvp->v_mount, FSTRANS_SHARED); 197 if ((error = 198 ulfs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 199 ap->a_dvp, ulr, vpp, ap->a_cnp)) != 0) 200 goto out; 201 VN_KNOTE(ap->a_dvp, NOTE_WRITE); 202 ip = VTOI(*vpp); 203 mp = (*vpp)->v_mount; 204 ino = ip->i_number; 205 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 206 if (vap->va_rdev != VNOVAL) { 207 struct ulfsmount *ump = ip->i_ump; 208 /* 209 * Want to be able to use this to make badblock 210 * inodes, so don't truncate the dev number. 211 */ 212 if (ump->um_fstype == ULFS1) 213 ip->i_ffs1_rdev = ulfs_rw32(vap->va_rdev, 214 ULFS_MPNEEDSWAP(ump)); 215 else 216 ip->i_ffs2_rdev = ulfs_rw64(vap->va_rdev, 217 ULFS_MPNEEDSWAP(ump)); 218 } 219 ULFS_WAPBL_UPDATE(*vpp, NULL, NULL, 0); 220 ULFS_WAPBL_END1(ap->a_dvp->v_mount, ap->a_dvp); 221 /* 222 * Remove inode so that it will be reloaded by VFS_VGET and 223 * checked to see if it is an alias of an existing entry in 224 * the inode cache. 225 */ 226 (*vpp)->v_type = VNON; 227 VOP_UNLOCK(*vpp); 228 vgone(*vpp); 229 error = VFS_VGET(mp, ino, vpp); 230 out: 231 fstrans_done(ap->a_dvp->v_mount); 232 if (error != 0) { 233 *vpp = NULL; 234 return (error); 235 } 236 return (0); 237 } 238 239 /* 240 * Open called. 241 * 242 * Nothing to do. 243 */ 244 /* ARGSUSED */ 245 int 246 ulfs_open(void *v) 247 { 248 struct vop_open_args /* { 249 struct vnode *a_vp; 250 int a_mode; 251 kauth_cred_t a_cred; 252 } */ *ap = v; 253 254 /* 255 * Files marked append-only must be opened for appending. 256 */ 257 if ((VTOI(ap->a_vp)->i_flags & APPEND) && 258 (ap->a_mode & (FWRITE | O_APPEND)) == FWRITE) 259 return (EPERM); 260 return (0); 261 } 262 263 /* 264 * Close called. 265 * 266 * Update the times on the inode. 267 */ 268 /* ARGSUSED */ 269 int 270 ulfs_close(void *v) 271 { 272 struct vop_close_args /* { 273 struct vnode *a_vp; 274 int a_fflag; 275 kauth_cred_t a_cred; 276 } */ *ap = v; 277 struct vnode *vp; 278 struct inode *ip; 279 280 vp = ap->a_vp; 281 ip = VTOI(vp); 282 fstrans_start(vp->v_mount, FSTRANS_SHARED); 283 if (vp->v_usecount > 1) 284 ULFS_ITIMES(vp, NULL, NULL, NULL); 285 fstrans_done(vp->v_mount); 286 return (0); 287 } 288 289 static int 290 ulfs_check_possible(struct vnode *vp, struct inode *ip, mode_t mode, 291 kauth_cred_t cred) 292 { 293 #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) 294 int error; 295 #endif 296 297 /* 298 * Disallow write attempts on read-only file systems; 299 * unless the file is a socket, fifo, or a block or 300 * character device resident on the file system. 301 */ 302 if (mode & VWRITE) { 303 switch (vp->v_type) { 304 case VDIR: 305 case VLNK: 306 case VREG: 307 if (vp->v_mount->mnt_flag & MNT_RDONLY) 308 return (EROFS); 309 #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) 310 fstrans_start(vp->v_mount, FSTRANS_SHARED); 311 error = lfs_chkdq(ip, 0, cred, 0); 312 fstrans_done(vp->v_mount); 313 if (error != 0) 314 return error; 315 #endif 316 break; 317 case VBAD: 318 case VBLK: 319 case VCHR: 320 case VSOCK: 321 case VFIFO: 322 case VNON: 323 default: 324 break; 325 } 326 } 327 328 /* If it is a snapshot, nobody gets access to it. */ 329 if ((ip->i_flags & SF_SNAPSHOT)) 330 return (EPERM); 331 /* If immutable bit set, nobody gets to write it. */ 332 if ((mode & VWRITE) && (ip->i_flags & IMMUTABLE)) 333 return (EPERM); 334 335 return 0; 336 } 337 338 static int 339 ulfs_check_permitted(struct vnode *vp, struct inode *ip, mode_t mode, 340 kauth_cred_t cred) 341 { 342 343 return kauth_authorize_vnode(cred, KAUTH_ACCESS_ACTION(mode, vp->v_type, 344 ip->i_mode & ALLPERMS), vp, NULL, genfs_can_access(vp->v_type, 345 ip->i_mode & ALLPERMS, ip->i_uid, ip->i_gid, mode, cred)); 346 } 347 348 int 349 ulfs_access(void *v) 350 { 351 struct vop_access_args /* { 352 struct vnode *a_vp; 353 int a_mode; 354 kauth_cred_t a_cred; 355 } */ *ap = v; 356 struct vnode *vp; 357 struct inode *ip; 358 mode_t mode; 359 int error; 360 361 vp = ap->a_vp; 362 ip = VTOI(vp); 363 mode = ap->a_mode; 364 365 error = ulfs_check_possible(vp, ip, mode, ap->a_cred); 366 if (error) 367 return error; 368 369 error = ulfs_check_permitted(vp, ip, mode, ap->a_cred); 370 371 return error; 372 } 373 374 /* ARGSUSED */ 375 int 376 ulfs_getattr(void *v) 377 { 378 struct vop_getattr_args /* { 379 struct vnode *a_vp; 380 struct vattr *a_vap; 381 kauth_cred_t a_cred; 382 } */ *ap = v; 383 struct vnode *vp; 384 struct inode *ip; 385 struct vattr *vap; 386 387 vp = ap->a_vp; 388 ip = VTOI(vp); 389 vap = ap->a_vap; 390 fstrans_start(vp->v_mount, FSTRANS_SHARED); 391 ULFS_ITIMES(vp, NULL, NULL, NULL); 392 393 /* 394 * Copy from inode table 395 */ 396 vap->va_fsid = ip->i_dev; 397 vap->va_fileid = ip->i_number; 398 vap->va_mode = ip->i_mode & ALLPERMS; 399 vap->va_nlink = ip->i_nlink; 400 vap->va_uid = ip->i_uid; 401 vap->va_gid = ip->i_gid; 402 vap->va_size = vp->v_size; 403 if (ip->i_ump->um_fstype == ULFS1) { 404 vap->va_rdev = (dev_t)ulfs_rw32(ip->i_ffs1_rdev, 405 ULFS_MPNEEDSWAP(ip->i_ump)); 406 vap->va_atime.tv_sec = ip->i_ffs1_atime; 407 vap->va_atime.tv_nsec = ip->i_ffs1_atimensec; 408 vap->va_mtime.tv_sec = ip->i_ffs1_mtime; 409 vap->va_mtime.tv_nsec = ip->i_ffs1_mtimensec; 410 vap->va_ctime.tv_sec = ip->i_ffs1_ctime; 411 vap->va_ctime.tv_nsec = ip->i_ffs1_ctimensec; 412 vap->va_birthtime.tv_sec = 0; 413 vap->va_birthtime.tv_nsec = 0; 414 vap->va_bytes = dbtob((u_quad_t)ip->i_ffs1_blocks); 415 } else { 416 vap->va_rdev = (dev_t)ulfs_rw64(ip->i_ffs2_rdev, 417 ULFS_MPNEEDSWAP(ip->i_ump)); 418 vap->va_atime.tv_sec = ip->i_ffs2_atime; 419 vap->va_atime.tv_nsec = ip->i_ffs2_atimensec; 420 vap->va_mtime.tv_sec = ip->i_ffs2_mtime; 421 vap->va_mtime.tv_nsec = ip->i_ffs2_mtimensec; 422 vap->va_ctime.tv_sec = ip->i_ffs2_ctime; 423 vap->va_ctime.tv_nsec = ip->i_ffs2_ctimensec; 424 vap->va_birthtime.tv_sec = ip->i_ffs2_birthtime; 425 vap->va_birthtime.tv_nsec = ip->i_ffs2_birthnsec; 426 vap->va_bytes = dbtob(ip->i_ffs2_blocks); 427 } 428 vap->va_gen = ip->i_gen; 429 vap->va_flags = ip->i_flags; 430 431 /* this doesn't belong here */ 432 if (vp->v_type == VBLK) 433 vap->va_blocksize = BLKDEV_IOSIZE; 434 else if (vp->v_type == VCHR) 435 vap->va_blocksize = MAXBSIZE; 436 else 437 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 438 vap->va_type = vp->v_type; 439 vap->va_filerev = ip->i_modrev; 440 fstrans_done(vp->v_mount); 441 return (0); 442 } 443 444 /* 445 * Set attribute vnode op. called from several syscalls 446 */ 447 int 448 ulfs_setattr(void *v) 449 { 450 struct vop_setattr_args /* { 451 struct vnode *a_vp; 452 struct vattr *a_vap; 453 kauth_cred_t a_cred; 454 } */ *ap = v; 455 struct vattr *vap; 456 struct vnode *vp; 457 struct inode *ip; 458 kauth_cred_t cred; 459 struct lwp *l; 460 int error; 461 kauth_action_t action; 462 bool changing_sysflags; 463 464 vap = ap->a_vap; 465 vp = ap->a_vp; 466 ip = VTOI(vp); 467 cred = ap->a_cred; 468 l = curlwp; 469 action = KAUTH_VNODE_WRITE_FLAGS; 470 changing_sysflags = false; 471 472 /* 473 * Check for unsettable attributes. 474 */ 475 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || 476 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || 477 (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || 478 ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { 479 return (EINVAL); 480 } 481 482 fstrans_start(vp->v_mount, FSTRANS_SHARED); 483 484 if (vap->va_flags != VNOVAL) { 485 if (vp->v_mount->mnt_flag & MNT_RDONLY) { 486 error = EROFS; 487 goto out; 488 } 489 490 /* Snapshot flag cannot be set or cleared */ 491 if ((vap->va_flags & (SF_SNAPSHOT | SF_SNAPINVAL)) != 492 (ip->i_flags & (SF_SNAPSHOT | SF_SNAPINVAL))) { 493 error = EPERM; 494 goto out; 495 } 496 497 if (ip->i_flags & (SF_IMMUTABLE | SF_APPEND)) { 498 action |= KAUTH_VNODE_HAS_SYSFLAGS; 499 } 500 501 if ((vap->va_flags & SF_SETTABLE) != (ip->i_flags & SF_SETTABLE)) { 502 action |= KAUTH_VNODE_WRITE_SYSFLAGS; 503 changing_sysflags = true; 504 } 505 506 error = kauth_authorize_vnode(cred, action, vp, NULL, 507 genfs_can_chflags(cred, vp->v_type, ip->i_uid, 508 changing_sysflags)); 509 if (error) 510 goto out; 511 512 if (changing_sysflags) { 513 error = ULFS_WAPBL_BEGIN(vp->v_mount); 514 if (error) 515 goto out; 516 ip->i_flags = vap->va_flags; 517 DIP_ASSIGN(ip, flags, ip->i_flags); 518 } else { 519 error = ULFS_WAPBL_BEGIN(vp->v_mount); 520 if (error) 521 goto out; 522 ip->i_flags &= SF_SETTABLE; 523 ip->i_flags |= (vap->va_flags & UF_SETTABLE); 524 DIP_ASSIGN(ip, flags, ip->i_flags); 525 } 526 ip->i_flag |= IN_CHANGE; 527 ULFS_WAPBL_UPDATE(vp, NULL, NULL, 0); 528 ULFS_WAPBL_END(vp->v_mount); 529 if (vap->va_flags & (IMMUTABLE | APPEND)) { 530 error = 0; 531 goto out; 532 } 533 } 534 if (ip->i_flags & (IMMUTABLE | APPEND)) { 535 error = EPERM; 536 goto out; 537 } 538 /* 539 * Go through the fields and update iff not VNOVAL. 540 */ 541 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) { 542 if (vp->v_mount->mnt_flag & MNT_RDONLY) { 543 error = EROFS; 544 goto out; 545 } 546 error = ULFS_WAPBL_BEGIN(vp->v_mount); 547 if (error) 548 goto out; 549 error = ulfs_chown(vp, vap->va_uid, vap->va_gid, cred, l); 550 ULFS_WAPBL_END(vp->v_mount); 551 if (error) 552 goto out; 553 } 554 if (vap->va_size != VNOVAL) { 555 /* 556 * Disallow write attempts on read-only file systems; 557 * unless the file is a socket, fifo, or a block or 558 * character device resident on the file system. 559 */ 560 switch (vp->v_type) { 561 case VDIR: 562 error = EISDIR; 563 goto out; 564 case VCHR: 565 case VBLK: 566 case VFIFO: 567 break; 568 case VREG: 569 if (vp->v_mount->mnt_flag & MNT_RDONLY) { 570 error = EROFS; 571 goto out; 572 } 573 if ((ip->i_flags & SF_SNAPSHOT) != 0) { 574 error = EPERM; 575 goto out; 576 } 577 error = ULFS_WAPBL_BEGIN(vp->v_mount); 578 if (error) 579 goto out; 580 if (!error) 581 error = ULFS_TRUNCATE(vp, vap->va_size, 0, cred); 582 ULFS_WAPBL_END(vp->v_mount); 583 if (error) 584 goto out; 585 break; 586 default: 587 error = EOPNOTSUPP; 588 goto out; 589 } 590 } 591 ip = VTOI(vp); 592 if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 593 vap->va_birthtime.tv_sec != VNOVAL) { 594 if (vp->v_mount->mnt_flag & MNT_RDONLY) { 595 error = EROFS; 596 goto out; 597 } 598 if ((ip->i_flags & SF_SNAPSHOT) != 0) { 599 error = EPERM; 600 goto out; 601 } 602 error = kauth_authorize_vnode(cred, KAUTH_VNODE_WRITE_TIMES, vp, 603 NULL, genfs_can_chtimes(vp, vap->va_vaflags, ip->i_uid, cred)); 604 if (error) 605 goto out; 606 error = ULFS_WAPBL_BEGIN(vp->v_mount); 607 if (error) 608 goto out; 609 if (vap->va_atime.tv_sec != VNOVAL) 610 if (!(vp->v_mount->mnt_flag & MNT_NOATIME)) 611 ip->i_flag |= IN_ACCESS; 612 if (vap->va_mtime.tv_sec != VNOVAL) { 613 ip->i_flag |= IN_CHANGE | IN_UPDATE; 614 if (vp->v_mount->mnt_flag & MNT_RELATIME) 615 ip->i_flag |= IN_ACCESS; 616 } 617 if (vap->va_birthtime.tv_sec != VNOVAL && 618 ip->i_ump->um_fstype == ULFS2) { 619 ip->i_ffs2_birthtime = vap->va_birthtime.tv_sec; 620 ip->i_ffs2_birthnsec = vap->va_birthtime.tv_nsec; 621 } 622 error = ULFS_UPDATE(vp, &vap->va_atime, &vap->va_mtime, 0); 623 ULFS_WAPBL_END(vp->v_mount); 624 if (error) 625 goto out; 626 } 627 error = 0; 628 if (vap->va_mode != (mode_t)VNOVAL) { 629 if (vp->v_mount->mnt_flag & MNT_RDONLY) { 630 error = EROFS; 631 goto out; 632 } 633 if ((ip->i_flags & SF_SNAPSHOT) != 0 && 634 (vap->va_mode & (S_IXUSR | S_IWUSR | S_IXGRP | S_IWGRP | 635 S_IXOTH | S_IWOTH))) { 636 error = EPERM; 637 goto out; 638 } 639 error = ULFS_WAPBL_BEGIN(vp->v_mount); 640 if (error) 641 goto out; 642 error = ulfs_chmod(vp, (int)vap->va_mode, cred, l); 643 ULFS_WAPBL_END(vp->v_mount); 644 } 645 VN_KNOTE(vp, NOTE_ATTRIB); 646 out: 647 fstrans_done(vp->v_mount); 648 return (error); 649 } 650 651 /* 652 * Change the mode on a file. 653 * Inode must be locked before calling. 654 */ 655 static int 656 ulfs_chmod(struct vnode *vp, int mode, kauth_cred_t cred, struct lwp *l) 657 { 658 struct inode *ip; 659 int error; 660 661 ULFS_WAPBL_JLOCK_ASSERT(vp->v_mount); 662 663 ip = VTOI(vp); 664 665 error = kauth_authorize_vnode(cred, KAUTH_VNODE_WRITE_SECURITY, vp, 666 NULL, genfs_can_chmod(vp->v_type, cred, ip->i_uid, ip->i_gid, mode)); 667 if (error) 668 return (error); 669 670 fstrans_start(vp->v_mount, FSTRANS_SHARED); 671 ip->i_mode &= ~ALLPERMS; 672 ip->i_mode |= (mode & ALLPERMS); 673 ip->i_flag |= IN_CHANGE; 674 DIP_ASSIGN(ip, mode, ip->i_mode); 675 ULFS_WAPBL_UPDATE(vp, NULL, NULL, 0); 676 fstrans_done(vp->v_mount); 677 return (0); 678 } 679 680 /* 681 * Perform chown operation on inode ip; 682 * inode must be locked prior to call. 683 */ 684 static int 685 ulfs_chown(struct vnode *vp, uid_t uid, gid_t gid, kauth_cred_t cred, 686 struct lwp *l) 687 { 688 struct inode *ip; 689 int error = 0; 690 #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) 691 uid_t ouid; 692 gid_t ogid; 693 int64_t change; 694 #endif 695 ip = VTOI(vp); 696 error = 0; 697 698 if (uid == (uid_t)VNOVAL) 699 uid = ip->i_uid; 700 if (gid == (gid_t)VNOVAL) 701 gid = ip->i_gid; 702 703 error = kauth_authorize_vnode(cred, KAUTH_VNODE_CHANGE_OWNERSHIP, vp, 704 NULL, genfs_can_chown(cred, ip->i_uid, ip->i_gid, uid, gid)); 705 if (error) 706 return (error); 707 708 fstrans_start(vp->v_mount, FSTRANS_SHARED); 709 #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) 710 ogid = ip->i_gid; 711 ouid = ip->i_uid; 712 change = DIP(ip, blocks); 713 (void) lfs_chkdq(ip, -change, cred, 0); 714 (void) lfs_chkiq(ip, -1, cred, 0); 715 #endif 716 ip->i_gid = gid; 717 DIP_ASSIGN(ip, gid, gid); 718 ip->i_uid = uid; 719 DIP_ASSIGN(ip, uid, uid); 720 #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) 721 if ((error = lfs_chkdq(ip, change, cred, 0)) == 0) { 722 if ((error = lfs_chkiq(ip, 1, cred, 0)) == 0) 723 goto good; 724 else 725 (void) lfs_chkdq(ip, -change, cred, FORCE); 726 } 727 ip->i_gid = ogid; 728 DIP_ASSIGN(ip, gid, ogid); 729 ip->i_uid = ouid; 730 DIP_ASSIGN(ip, uid, ouid); 731 (void) lfs_chkdq(ip, change, cred, FORCE); 732 (void) lfs_chkiq(ip, 1, cred, FORCE); 733 fstrans_done(vp->v_mount); 734 return (error); 735 good: 736 #endif /* LFS_QUOTA || LFS_QUOTA2 */ 737 ip->i_flag |= IN_CHANGE; 738 ULFS_WAPBL_UPDATE(vp, NULL, NULL, 0); 739 fstrans_done(vp->v_mount); 740 return (0); 741 } 742 743 int 744 ulfs_remove(void *v) 745 { 746 struct vop_remove_args /* { 747 struct vnode *a_dvp; 748 struct vnode *a_vp; 749 struct componentname *a_cnp; 750 } */ *ap = v; 751 struct vnode *vp, *dvp; 752 struct inode *ip; 753 int error; 754 struct ulfs_lookup_results *ulr; 755 756 vp = ap->a_vp; 757 dvp = ap->a_dvp; 758 ip = VTOI(vp); 759 760 /* XXX should handle this material another way */ 761 ulr = &VTOI(dvp)->i_crap; 762 ULFS_CHECK_CRAPCOUNTER(VTOI(dvp)); 763 764 fstrans_start(dvp->v_mount, FSTRANS_SHARED); 765 if (vp->v_type == VDIR || (ip->i_flags & (IMMUTABLE | APPEND)) || 766 (VTOI(dvp)->i_flags & APPEND)) 767 error = EPERM; 768 else { 769 error = ULFS_WAPBL_BEGIN(dvp->v_mount); 770 if (error == 0) { 771 error = ulfs_dirremove(dvp, ulr, 772 ip, ap->a_cnp->cn_flags, 0); 773 ULFS_WAPBL_END(dvp->v_mount); 774 } 775 } 776 VN_KNOTE(vp, NOTE_DELETE); 777 VN_KNOTE(dvp, NOTE_WRITE); 778 if (dvp == vp) 779 vrele(vp); 780 else 781 vput(vp); 782 vput(dvp); 783 fstrans_done(dvp->v_mount); 784 return (error); 785 } 786 787 /* 788 * ulfs_link: create hard link. 789 */ 790 int 791 ulfs_link(void *v) 792 { 793 struct vop_link_args /* { 794 struct vnode *a_dvp; 795 struct vnode *a_vp; 796 struct componentname *a_cnp; 797 } */ *ap = v; 798 struct vnode *dvp = ap->a_dvp; 799 struct vnode *vp = ap->a_vp; 800 struct componentname *cnp = ap->a_cnp; 801 struct inode *ip; 802 struct lfs_direct *newdir; 803 int error; 804 struct ulfs_lookup_results *ulr; 805 806 KASSERT(dvp != vp); 807 KASSERT(vp->v_type != VDIR); 808 KASSERT(dvp->v_mount == vp->v_mount); 809 810 /* XXX should handle this material another way */ 811 ulr = &VTOI(dvp)->i_crap; 812 ULFS_CHECK_CRAPCOUNTER(VTOI(dvp)); 813 814 fstrans_start(dvp->v_mount, FSTRANS_SHARED); 815 error = vn_lock(vp, LK_EXCLUSIVE); 816 if (error) { 817 VOP_ABORTOP(dvp, cnp); 818 goto out2; 819 } 820 ip = VTOI(vp); 821 if ((nlink_t)ip->i_nlink >= LINK_MAX) { 822 VOP_ABORTOP(dvp, cnp); 823 error = EMLINK; 824 goto out1; 825 } 826 if (ip->i_flags & (IMMUTABLE | APPEND)) { 827 VOP_ABORTOP(dvp, cnp); 828 error = EPERM; 829 goto out1; 830 } 831 error = ULFS_WAPBL_BEGIN(vp->v_mount); 832 if (error) { 833 VOP_ABORTOP(dvp, cnp); 834 goto out1; 835 } 836 ip->i_nlink++; 837 DIP_ASSIGN(ip, nlink, ip->i_nlink); 838 ip->i_flag |= IN_CHANGE; 839 error = ULFS_UPDATE(vp, NULL, NULL, UPDATE_DIROP); 840 if (!error) { 841 newdir = pool_cache_get(ulfs_direct_cache, PR_WAITOK); 842 ulfs_makedirentry(ip, cnp, newdir); 843 error = ulfs_direnter(dvp, ulr, vp, newdir, cnp, NULL); 844 pool_cache_put(ulfs_direct_cache, newdir); 845 } 846 if (error) { 847 ip->i_nlink--; 848 DIP_ASSIGN(ip, nlink, ip->i_nlink); 849 ip->i_flag |= IN_CHANGE; 850 ULFS_WAPBL_UPDATE(vp, NULL, NULL, UPDATE_DIROP); 851 } 852 ULFS_WAPBL_END(vp->v_mount); 853 out1: 854 VOP_UNLOCK(vp); 855 out2: 856 VN_KNOTE(vp, NOTE_LINK); 857 VN_KNOTE(dvp, NOTE_WRITE); 858 vput(dvp); 859 fstrans_done(dvp->v_mount); 860 return (error); 861 } 862 863 /* 864 * whiteout vnode call 865 */ 866 int 867 ulfs_whiteout(void *v) 868 { 869 struct vop_whiteout_args /* { 870 struct vnode *a_dvp; 871 struct componentname *a_cnp; 872 int a_flags; 873 } */ *ap = v; 874 struct vnode *dvp = ap->a_dvp; 875 struct componentname *cnp = ap->a_cnp; 876 struct lfs_direct *newdir; 877 int error; 878 struct ulfsmount *ump = VFSTOULFS(dvp->v_mount); 879 struct ulfs_lookup_results *ulr; 880 881 /* XXX should handle this material another way */ 882 ulr = &VTOI(dvp)->i_crap; 883 ULFS_CHECK_CRAPCOUNTER(VTOI(dvp)); 884 885 error = 0; 886 switch (ap->a_flags) { 887 case LOOKUP: 888 /* 4.4 format directories support whiteout operations */ 889 if (ump->um_maxsymlinklen > 0) 890 return (0); 891 return (EOPNOTSUPP); 892 893 case CREATE: 894 /* create a new directory whiteout */ 895 fstrans_start(dvp->v_mount, FSTRANS_SHARED); 896 error = ULFS_WAPBL_BEGIN(dvp->v_mount); 897 if (error) 898 break; 899 #ifdef DIAGNOSTIC 900 if (ump->um_maxsymlinklen <= 0) 901 panic("ulfs_whiteout: old format filesystem"); 902 #endif 903 904 newdir = pool_cache_get(ulfs_direct_cache, PR_WAITOK); 905 newdir->d_ino = ULFS_WINO; 906 newdir->d_namlen = cnp->cn_namelen; 907 memcpy(newdir->d_name, cnp->cn_nameptr, 908 (size_t)cnp->cn_namelen); 909 newdir->d_name[cnp->cn_namelen] = '\0'; 910 newdir->d_type = LFS_DT_WHT; 911 error = ulfs_direnter(dvp, ulr, NULL, newdir, cnp, NULL); 912 pool_cache_put(ulfs_direct_cache, newdir); 913 break; 914 915 case DELETE: 916 /* remove an existing directory whiteout */ 917 fstrans_start(dvp->v_mount, FSTRANS_SHARED); 918 error = ULFS_WAPBL_BEGIN(dvp->v_mount); 919 if (error) 920 break; 921 #ifdef DIAGNOSTIC 922 if (ump->um_maxsymlinklen <= 0) 923 panic("ulfs_whiteout: old format filesystem"); 924 #endif 925 926 cnp->cn_flags &= ~DOWHITEOUT; 927 error = ulfs_dirremove(dvp, ulr, NULL, cnp->cn_flags, 0); 928 break; 929 default: 930 panic("ulfs_whiteout: unknown op"); 931 /* NOTREACHED */ 932 } 933 ULFS_WAPBL_END(dvp->v_mount); 934 fstrans_done(dvp->v_mount); 935 return (error); 936 } 937 938 int 939 ulfs_mkdir(void *v) 940 { 941 struct vop_mkdir_args /* { 942 struct vnode *a_dvp; 943 struct vnode **a_vpp; 944 struct componentname *a_cnp; 945 struct vattr *a_vap; 946 } */ *ap = v; 947 struct vnode *dvp = ap->a_dvp, *tvp; 948 struct vattr *vap = ap->a_vap; 949 struct componentname *cnp = ap->a_cnp; 950 struct inode *ip, *dp = VTOI(dvp); 951 struct buf *bp; 952 struct lfs_dirtemplate dirtemplate; 953 struct lfs_direct *newdir; 954 int error, dmode; 955 struct ulfsmount *ump = dp->i_ump; 956 int dirblksiz = ump->um_dirblksiz; 957 struct ulfs_lookup_results *ulr; 958 959 fstrans_start(dvp->v_mount, FSTRANS_SHARED); 960 961 /* XXX should handle this material another way */ 962 ulr = &dp->i_crap; 963 ULFS_CHECK_CRAPCOUNTER(dp); 964 965 if ((nlink_t)dp->i_nlink >= LINK_MAX) { 966 error = EMLINK; 967 goto out; 968 } 969 dmode = vap->va_mode & ACCESSPERMS; 970 dmode |= LFS_IFDIR; 971 /* 972 * Must simulate part of ulfs_makeinode here to acquire the inode, 973 * but not have it entered in the parent directory. The entry is 974 * made later after writing "." and ".." entries. 975 */ 976 if ((error = ULFS_VALLOC(dvp, dmode, cnp->cn_cred, ap->a_vpp)) != 0) 977 goto out; 978 979 tvp = *ap->a_vpp; 980 ip = VTOI(tvp); 981 982 error = ULFS_WAPBL_BEGIN(ap->a_dvp->v_mount); 983 if (error) { 984 ULFS_VFREE(tvp, ip->i_number, dmode); 985 vput(tvp); 986 goto out; 987 } 988 ip->i_uid = kauth_cred_geteuid(cnp->cn_cred); 989 DIP_ASSIGN(ip, uid, ip->i_uid); 990 ip->i_gid = dp->i_gid; 991 DIP_ASSIGN(ip, gid, ip->i_gid); 992 #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) 993 if ((error = lfs_chkiq(ip, 1, cnp->cn_cred, 0))) { 994 ULFS_VFREE(tvp, ip->i_number, dmode); 995 ULFS_WAPBL_END(dvp->v_mount); 996 fstrans_done(dvp->v_mount); 997 vput(tvp); 998 vput(dvp); 999 return (error); 1000 } 1001 #endif 1002 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 1003 ip->i_mode = dmode; 1004 DIP_ASSIGN(ip, mode, dmode); 1005 tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */ 1006 ip->i_nlink = 2; 1007 DIP_ASSIGN(ip, nlink, 2); 1008 if (cnp->cn_flags & ISWHITEOUT) { 1009 ip->i_flags |= UF_OPAQUE; 1010 DIP_ASSIGN(ip, flags, ip->i_flags); 1011 } 1012 1013 /* 1014 * Bump link count in parent directory to reflect work done below. 1015 * Should be done before reference is created so cleanup is 1016 * possible if we crash. 1017 */ 1018 dp->i_nlink++; 1019 DIP_ASSIGN(dp, nlink, dp->i_nlink); 1020 dp->i_flag |= IN_CHANGE; 1021 if ((error = ULFS_UPDATE(dvp, NULL, NULL, UPDATE_DIROP)) != 0) 1022 goto bad; 1023 1024 /* 1025 * Initialize directory with "." and ".." from static template. 1026 */ 1027 dirtemplate = mastertemplate; 1028 dirtemplate.dotdot_reclen = dirblksiz - dirtemplate.dot_reclen; 1029 dirtemplate.dot_ino = ulfs_rw32(ip->i_number, ULFS_MPNEEDSWAP(ump)); 1030 dirtemplate.dotdot_ino = ulfs_rw32(dp->i_number, ULFS_MPNEEDSWAP(ump)); 1031 dirtemplate.dot_reclen = ulfs_rw16(dirtemplate.dot_reclen, 1032 ULFS_MPNEEDSWAP(ump)); 1033 dirtemplate.dotdot_reclen = ulfs_rw16(dirtemplate.dotdot_reclen, 1034 ULFS_MPNEEDSWAP(ump)); 1035 if (ump->um_maxsymlinklen <= 0) { 1036 #if BYTE_ORDER == LITTLE_ENDIAN 1037 if (ULFS_MPNEEDSWAP(ump) == 0) 1038 #else 1039 if (ULFS_MPNEEDSWAP(ump) != 0) 1040 #endif 1041 { 1042 dirtemplate.dot_type = dirtemplate.dot_namlen; 1043 dirtemplate.dotdot_type = dirtemplate.dotdot_namlen; 1044 dirtemplate.dot_namlen = dirtemplate.dotdot_namlen = 0; 1045 } else 1046 dirtemplate.dot_type = dirtemplate.dotdot_type = 0; 1047 } 1048 if ((error = ULFS_BALLOC(tvp, (off_t)0, dirblksiz, cnp->cn_cred, 1049 B_CLRBUF, &bp)) != 0) 1050 goto bad; 1051 ip->i_size = dirblksiz; 1052 DIP_ASSIGN(ip, size, dirblksiz); 1053 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 1054 uvm_vnp_setsize(tvp, ip->i_size); 1055 memcpy((void *)bp->b_data, (void *)&dirtemplate, sizeof dirtemplate); 1056 1057 /* 1058 * Directory set up, now install it's entry in the parent directory. 1059 * We must write out the buffer containing the new directory body 1060 * before entering the new name in the parent. 1061 */ 1062 if ((error = VOP_BWRITE(bp->b_vp, bp)) != 0) 1063 goto bad; 1064 if ((error = ULFS_UPDATE(tvp, NULL, NULL, UPDATE_DIROP)) != 0) { 1065 goto bad; 1066 } 1067 newdir = pool_cache_get(ulfs_direct_cache, PR_WAITOK); 1068 ulfs_makedirentry(ip, cnp, newdir); 1069 error = ulfs_direnter(dvp, ulr, tvp, newdir, cnp, bp); 1070 pool_cache_put(ulfs_direct_cache, newdir); 1071 bad: 1072 if (error == 0) { 1073 VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); 1074 ULFS_WAPBL_END(dvp->v_mount); 1075 } else { 1076 dp->i_nlink--; 1077 DIP_ASSIGN(dp, nlink, dp->i_nlink); 1078 dp->i_flag |= IN_CHANGE; 1079 ULFS_WAPBL_UPDATE(dvp, NULL, NULL, UPDATE_DIROP); 1080 /* 1081 * No need to do an explicit ULFS_TRUNCATE here, vrele will 1082 * do this for us because we set the link count to 0. 1083 */ 1084 ip->i_nlink = 0; 1085 DIP_ASSIGN(ip, nlink, 0); 1086 ip->i_flag |= IN_CHANGE; 1087 /* If IN_ADIROP, account for it */ 1088 ULFS_UNMARK_VNODE(tvp); 1089 ULFS_WAPBL_UPDATE(tvp, NULL, NULL, UPDATE_DIROP); 1090 ULFS_WAPBL_END(dvp->v_mount); 1091 vput(tvp); 1092 } 1093 out: 1094 fstrans_done(dvp->v_mount); 1095 vput(dvp); 1096 return (error); 1097 } 1098 1099 int 1100 ulfs_rmdir(void *v) 1101 { 1102 struct vop_rmdir_args /* { 1103 struct vnode *a_dvp; 1104 struct vnode *a_vp; 1105 struct componentname *a_cnp; 1106 } */ *ap = v; 1107 struct vnode *vp, *dvp; 1108 struct componentname *cnp; 1109 struct inode *ip, *dp; 1110 int error; 1111 struct ulfs_lookup_results *ulr; 1112 1113 vp = ap->a_vp; 1114 dvp = ap->a_dvp; 1115 cnp = ap->a_cnp; 1116 ip = VTOI(vp); 1117 dp = VTOI(dvp); 1118 1119 /* XXX should handle this material another way */ 1120 ulr = &dp->i_crap; 1121 ULFS_CHECK_CRAPCOUNTER(dp); 1122 1123 /* 1124 * No rmdir "." or of mounted directories please. 1125 */ 1126 if (dp == ip || vp->v_mountedhere != NULL) { 1127 if (dp == ip) 1128 vrele(dvp); 1129 else 1130 vput(dvp); 1131 vput(vp); 1132 return (EINVAL); 1133 } 1134 1135 fstrans_start(dvp->v_mount, FSTRANS_SHARED); 1136 1137 /* 1138 * Do not remove a directory that is in the process of being renamed. 1139 * Verify that the directory is empty (and valid). (Rmdir ".." won't 1140 * be valid since ".." will contain a reference to the current 1141 * directory and thus be non-empty.) 1142 */ 1143 error = 0; 1144 if (ip->i_nlink != 2 || 1145 !ulfs_dirempty(ip, dp->i_number, cnp->cn_cred)) { 1146 error = ENOTEMPTY; 1147 goto out; 1148 } 1149 if ((dp->i_flags & APPEND) || 1150 (ip->i_flags & (IMMUTABLE | APPEND))) { 1151 error = EPERM; 1152 goto out; 1153 } 1154 error = ULFS_WAPBL_BEGIN(dvp->v_mount); 1155 if (error) 1156 goto out; 1157 /* 1158 * Delete reference to directory before purging 1159 * inode. If we crash in between, the directory 1160 * will be reattached to lost+found, 1161 */ 1162 error = ulfs_dirremove(dvp, ulr, ip, cnp->cn_flags, 1); 1163 if (error) { 1164 ULFS_WAPBL_END(dvp->v_mount); 1165 goto out; 1166 } 1167 VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); 1168 cache_purge(dvp); 1169 /* 1170 * Truncate inode. The only stuff left in the directory is "." and 1171 * "..". The "." reference is inconsequential since we're quashing 1172 * it. 1173 */ 1174 dp->i_nlink--; 1175 DIP_ASSIGN(dp, nlink, dp->i_nlink); 1176 dp->i_flag |= IN_CHANGE; 1177 ULFS_WAPBL_UPDATE(dvp, NULL, NULL, UPDATE_DIROP); 1178 ip->i_nlink--; 1179 DIP_ASSIGN(ip, nlink, ip->i_nlink); 1180 ip->i_flag |= IN_CHANGE; 1181 error = ULFS_TRUNCATE(vp, (off_t)0, IO_SYNC, cnp->cn_cred); 1182 cache_purge(vp); 1183 /* 1184 * Unlock the log while we still have reference to unlinked 1185 * directory vp so that it will not get locked for recycling 1186 */ 1187 ULFS_WAPBL_END(dvp->v_mount); 1188 #ifdef LFS_DIRHASH 1189 if (ip->i_dirhash != NULL) 1190 ulfsdirhash_free(ip); 1191 #endif 1192 out: 1193 VN_KNOTE(vp, NOTE_DELETE); 1194 vput(vp); 1195 fstrans_done(dvp->v_mount); 1196 vput(dvp); 1197 return (error); 1198 } 1199 1200 /* 1201 * symlink -- make a symbolic link 1202 */ 1203 int 1204 ulfs_symlink(void *v) 1205 { 1206 struct vop_symlink_args /* { 1207 struct vnode *a_dvp; 1208 struct vnode **a_vpp; 1209 struct componentname *a_cnp; 1210 struct vattr *a_vap; 1211 char *a_target; 1212 } */ *ap = v; 1213 struct vnode *vp, **vpp; 1214 struct inode *ip; 1215 int len, error; 1216 struct ulfs_lookup_results *ulr; 1217 1218 vpp = ap->a_vpp; 1219 1220 /* XXX should handle this material another way */ 1221 ulr = &VTOI(ap->a_dvp)->i_crap; 1222 ULFS_CHECK_CRAPCOUNTER(VTOI(ap->a_dvp)); 1223 1224 /* 1225 * ULFS_WAPBL_BEGIN1(dvp->v_mount, dvp) performed by successful 1226 * ulfs_makeinode 1227 */ 1228 fstrans_start(ap->a_dvp->v_mount, FSTRANS_SHARED); 1229 error = ulfs_makeinode(LFS_IFLNK | ap->a_vap->va_mode, ap->a_dvp, ulr, 1230 vpp, ap->a_cnp); 1231 if (error) 1232 goto out; 1233 VN_KNOTE(ap->a_dvp, NOTE_WRITE); 1234 vp = *vpp; 1235 len = strlen(ap->a_target); 1236 ip = VTOI(vp); 1237 if (len < ip->i_ump->um_maxsymlinklen) { 1238 memcpy((char *)SHORTLINK(ip), ap->a_target, len); 1239 ip->i_size = len; 1240 DIP_ASSIGN(ip, size, len); 1241 uvm_vnp_setsize(vp, ip->i_size); 1242 ip->i_flag |= IN_CHANGE | IN_UPDATE; 1243 if (vp->v_mount->mnt_flag & MNT_RELATIME) 1244 ip->i_flag |= IN_ACCESS; 1245 ULFS_WAPBL_UPDATE(vp, NULL, NULL, 0); 1246 } else 1247 error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0, 1248 UIO_SYSSPACE, IO_NODELOCKED | IO_JOURNALLOCKED, 1249 ap->a_cnp->cn_cred, NULL, NULL); 1250 ULFS_WAPBL_END1(ap->a_dvp->v_mount, ap->a_dvp); 1251 if (error) 1252 vput(vp); 1253 out: 1254 fstrans_done(ap->a_dvp->v_mount); 1255 return (error); 1256 } 1257 1258 /* 1259 * Vnode op for reading directories. 1260 * 1261 * This routine handles converting from the on-disk directory format 1262 * "struct lfs_direct" to the in-memory format "struct dirent" as well as 1263 * byte swapping the entries if necessary. 1264 */ 1265 int 1266 ulfs_readdir(void *v) 1267 { 1268 struct vop_readdir_args /* { 1269 struct vnode *a_vp; 1270 struct uio *a_uio; 1271 kauth_cred_t a_cred; 1272 int *a_eofflag; 1273 off_t **a_cookies; 1274 int *ncookies; 1275 } */ *ap = v; 1276 struct vnode *vp = ap->a_vp; 1277 struct lfs_direct *cdp, *ecdp; 1278 struct dirent *ndp; 1279 char *cdbuf, *ndbuf, *endp; 1280 struct uio auio, *uio; 1281 struct iovec aiov; 1282 int error; 1283 size_t count, ccount, rcount, cdbufsz, ndbufsz; 1284 off_t off, *ccp; 1285 off_t startoff; 1286 size_t skipbytes; 1287 struct ulfsmount *ump = VFSTOULFS(vp->v_mount); 1288 int nswap = ULFS_MPNEEDSWAP(ump); 1289 #if BYTE_ORDER == LITTLE_ENDIAN 1290 int needswap = ump->um_maxsymlinklen <= 0 && nswap == 0; 1291 #else 1292 int needswap = ump->um_maxsymlinklen <= 0 && nswap != 0; 1293 #endif 1294 uio = ap->a_uio; 1295 count = uio->uio_resid; 1296 rcount = count - ((uio->uio_offset + count) & (ump->um_dirblksiz - 1)); 1297 1298 if (rcount < _DIRENT_MINSIZE(cdp) || count < _DIRENT_MINSIZE(ndp)) 1299 return EINVAL; 1300 1301 startoff = uio->uio_offset & ~(ump->um_dirblksiz - 1); 1302 skipbytes = uio->uio_offset - startoff; 1303 rcount += skipbytes; 1304 1305 auio.uio_iov = &aiov; 1306 auio.uio_iovcnt = 1; 1307 auio.uio_offset = startoff; 1308 auio.uio_resid = rcount; 1309 UIO_SETUP_SYSSPACE(&auio); 1310 auio.uio_rw = UIO_READ; 1311 cdbufsz = rcount; 1312 cdbuf = kmem_alloc(cdbufsz, KM_SLEEP); 1313 aiov.iov_base = cdbuf; 1314 aiov.iov_len = rcount; 1315 error = VOP_READ(vp, &auio, 0, ap->a_cred); 1316 if (error != 0) { 1317 kmem_free(cdbuf, cdbufsz); 1318 return error; 1319 } 1320 1321 rcount -= auio.uio_resid; 1322 1323 cdp = (struct lfs_direct *)(void *)cdbuf; 1324 ecdp = (struct lfs_direct *)(void *)&cdbuf[rcount]; 1325 1326 ndbufsz = count; 1327 ndbuf = kmem_alloc(ndbufsz, KM_SLEEP); 1328 ndp = (struct dirent *)(void *)ndbuf; 1329 endp = &ndbuf[count]; 1330 1331 off = uio->uio_offset; 1332 if (ap->a_cookies) { 1333 ccount = rcount / _DIRENT_RECLEN(cdp, 1); 1334 ccp = *(ap->a_cookies) = malloc(ccount * sizeof(*ccp), 1335 M_TEMP, M_WAITOK); 1336 } else { 1337 /* XXX: GCC */ 1338 ccount = 0; 1339 ccp = NULL; 1340 } 1341 1342 while (cdp < ecdp) { 1343 cdp->d_reclen = ulfs_rw16(cdp->d_reclen, nswap); 1344 if (skipbytes > 0) { 1345 if (cdp->d_reclen <= skipbytes) { 1346 skipbytes -= cdp->d_reclen; 1347 cdp = _DIRENT_NEXT(cdp); 1348 continue; 1349 } 1350 /* 1351 * invalid cookie. 1352 */ 1353 error = EINVAL; 1354 goto out; 1355 } 1356 if (cdp->d_reclen == 0) { 1357 struct dirent *ondp = ndp; 1358 ndp->d_reclen = _DIRENT_MINSIZE(ndp); 1359 ndp = _DIRENT_NEXT(ndp); 1360 ondp->d_reclen = 0; 1361 cdp = ecdp; 1362 break; 1363 } 1364 if (needswap) { 1365 ndp->d_type = cdp->d_namlen; 1366 ndp->d_namlen = cdp->d_type; 1367 } else { 1368 ndp->d_type = cdp->d_type; 1369 ndp->d_namlen = cdp->d_namlen; 1370 } 1371 ndp->d_reclen = _DIRENT_RECLEN(ndp, ndp->d_namlen); 1372 if ((char *)(void *)ndp + ndp->d_reclen + 1373 _DIRENT_MINSIZE(ndp) > endp) 1374 break; 1375 ndp->d_fileno = ulfs_rw32(cdp->d_ino, nswap); 1376 (void)memcpy(ndp->d_name, cdp->d_name, ndp->d_namlen); 1377 memset(&ndp->d_name[ndp->d_namlen], 0, 1378 ndp->d_reclen - _DIRENT_NAMEOFF(ndp) - ndp->d_namlen); 1379 off += cdp->d_reclen; 1380 if (ap->a_cookies) { 1381 KASSERT(ccp - *(ap->a_cookies) < ccount); 1382 *(ccp++) = off; 1383 } 1384 ndp = _DIRENT_NEXT(ndp); 1385 cdp = _DIRENT_NEXT(cdp); 1386 } 1387 1388 count = ((char *)(void *)ndp - ndbuf); 1389 error = uiomove(ndbuf, count, uio); 1390 out: 1391 if (ap->a_cookies) { 1392 if (error) { 1393 free(*(ap->a_cookies), M_TEMP); 1394 *(ap->a_cookies) = NULL; 1395 *(ap->a_ncookies) = 0; 1396 } else { 1397 *ap->a_ncookies = ccp - *(ap->a_cookies); 1398 } 1399 } 1400 uio->uio_offset = off; 1401 kmem_free(ndbuf, ndbufsz); 1402 kmem_free(cdbuf, cdbufsz); 1403 *ap->a_eofflag = VTOI(vp)->i_size <= uio->uio_offset; 1404 return error; 1405 } 1406 1407 /* 1408 * Return target name of a symbolic link 1409 */ 1410 int 1411 ulfs_readlink(void *v) 1412 { 1413 struct vop_readlink_args /* { 1414 struct vnode *a_vp; 1415 struct uio *a_uio; 1416 kauth_cred_t a_cred; 1417 } */ *ap = v; 1418 struct vnode *vp = ap->a_vp; 1419 struct inode *ip = VTOI(vp); 1420 struct ulfsmount *ump = VFSTOULFS(vp->v_mount); 1421 int isize; 1422 1423 isize = ip->i_size; 1424 if (isize < ump->um_maxsymlinklen || 1425 (ump->um_maxsymlinklen == 0 && DIP(ip, blocks) == 0)) { 1426 uiomove((char *)SHORTLINK(ip), isize, ap->a_uio); 1427 return (0); 1428 } 1429 return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred)); 1430 } 1431 1432 /* 1433 * Calculate the logical to physical mapping if not done already, 1434 * then call the device strategy routine. 1435 */ 1436 int 1437 ulfs_strategy(void *v) 1438 { 1439 struct vop_strategy_args /* { 1440 struct vnode *a_vp; 1441 struct buf *a_bp; 1442 } */ *ap = v; 1443 struct buf *bp; 1444 struct vnode *vp; 1445 struct inode *ip; 1446 int error; 1447 1448 bp = ap->a_bp; 1449 vp = ap->a_vp; 1450 ip = VTOI(vp); 1451 if (vp->v_type == VBLK || vp->v_type == VCHR) 1452 panic("ulfs_strategy: spec"); 1453 KASSERT(bp->b_bcount != 0); 1454 if (bp->b_blkno == bp->b_lblkno) { 1455 error = VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, 1456 NULL); 1457 if (error) { 1458 bp->b_error = error; 1459 biodone(bp); 1460 return (error); 1461 } 1462 if (bp->b_blkno == -1) /* no valid data */ 1463 clrbuf(bp); 1464 } 1465 if (bp->b_blkno < 0) { /* block is not on disk */ 1466 biodone(bp); 1467 return (0); 1468 } 1469 vp = ip->i_devvp; 1470 1471 error = VOP_STRATEGY(vp, bp); 1472 if (error) 1473 return error; 1474 1475 return 0; 1476 } 1477 1478 /* 1479 * Print out the contents of an inode. 1480 */ 1481 int 1482 ulfs_print(void *v) 1483 { 1484 struct vop_print_args /* { 1485 struct vnode *a_vp; 1486 } */ *ap = v; 1487 struct vnode *vp; 1488 struct inode *ip; 1489 1490 vp = ap->a_vp; 1491 ip = VTOI(vp); 1492 printf("tag VT_ULFS, ino %llu, on dev %llu, %llu", 1493 (unsigned long long)ip->i_number, 1494 (unsigned long long)major(ip->i_dev), 1495 (unsigned long long)minor(ip->i_dev)); 1496 printf(" flags 0x%x, nlink %d\n", 1497 ip->i_flag, ip->i_nlink); 1498 printf("\tmode 0%o, owner %d, group %d, size %qd", 1499 ip->i_mode, ip->i_uid, ip->i_gid, 1500 (long long)ip->i_size); 1501 if (vp->v_type == VFIFO) 1502 VOCALL(fifo_vnodeop_p, VOFFSET(vop_print), v); 1503 printf("\n"); 1504 return (0); 1505 } 1506 1507 /* 1508 * Read wrapper for special devices. 1509 */ 1510 int 1511 ulfsspec_read(void *v) 1512 { 1513 struct vop_read_args /* { 1514 struct vnode *a_vp; 1515 struct uio *a_uio; 1516 int a_ioflag; 1517 kauth_cred_t a_cred; 1518 } */ *ap = v; 1519 1520 /* 1521 * Set access flag. 1522 */ 1523 if ((ap->a_vp->v_mount->mnt_flag & MNT_NODEVMTIME) == 0) 1524 VTOI(ap->a_vp)->i_flag |= IN_ACCESS; 1525 return (VOCALL (spec_vnodeop_p, VOFFSET(vop_read), ap)); 1526 } 1527 1528 /* 1529 * Write wrapper for special devices. 1530 */ 1531 int 1532 ulfsspec_write(void *v) 1533 { 1534 struct vop_write_args /* { 1535 struct vnode *a_vp; 1536 struct uio *a_uio; 1537 int a_ioflag; 1538 kauth_cred_t a_cred; 1539 } */ *ap = v; 1540 1541 /* 1542 * Set update and change flags. 1543 */ 1544 if ((ap->a_vp->v_mount->mnt_flag & MNT_NODEVMTIME) == 0) 1545 VTOI(ap->a_vp)->i_flag |= IN_MODIFY; 1546 return (VOCALL (spec_vnodeop_p, VOFFSET(vop_write), ap)); 1547 } 1548 1549 /* 1550 * Close wrapper for special devices. 1551 * 1552 * Update the times on the inode then do device close. 1553 */ 1554 int 1555 ulfsspec_close(void *v) 1556 { 1557 struct vop_close_args /* { 1558 struct vnode *a_vp; 1559 int a_fflag; 1560 kauth_cred_t a_cred; 1561 } */ *ap = v; 1562 struct vnode *vp; 1563 struct inode *ip; 1564 1565 vp = ap->a_vp; 1566 ip = VTOI(vp); 1567 if (vp->v_usecount > 1) 1568 ULFS_ITIMES(vp, NULL, NULL, NULL); 1569 return (VOCALL (spec_vnodeop_p, VOFFSET(vop_close), ap)); 1570 } 1571 1572 /* 1573 * Read wrapper for fifo's 1574 */ 1575 int 1576 ulfsfifo_read(void *v) 1577 { 1578 struct vop_read_args /* { 1579 struct vnode *a_vp; 1580 struct uio *a_uio; 1581 int a_ioflag; 1582 kauth_cred_t a_cred; 1583 } */ *ap = v; 1584 1585 /* 1586 * Set access flag. 1587 */ 1588 VTOI(ap->a_vp)->i_flag |= IN_ACCESS; 1589 return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_read), ap)); 1590 } 1591 1592 /* 1593 * Write wrapper for fifo's. 1594 */ 1595 int 1596 ulfsfifo_write(void *v) 1597 { 1598 struct vop_write_args /* { 1599 struct vnode *a_vp; 1600 struct uio *a_uio; 1601 int a_ioflag; 1602 kauth_cred_t a_cred; 1603 } */ *ap = v; 1604 1605 /* 1606 * Set update and change flags. 1607 */ 1608 VTOI(ap->a_vp)->i_flag |= IN_MODIFY; 1609 return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_write), ap)); 1610 } 1611 1612 /* 1613 * Close wrapper for fifo's. 1614 * 1615 * Update the times on the inode then do device close. 1616 */ 1617 int 1618 ulfsfifo_close(void *v) 1619 { 1620 struct vop_close_args /* { 1621 struct vnode *a_vp; 1622 int a_fflag; 1623 kauth_cred_t a_cred; 1624 } */ *ap = v; 1625 struct vnode *vp; 1626 struct inode *ip; 1627 1628 vp = ap->a_vp; 1629 ip = VTOI(vp); 1630 if (ap->a_vp->v_usecount > 1) 1631 ULFS_ITIMES(vp, NULL, NULL, NULL); 1632 return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_close), ap)); 1633 } 1634 1635 /* 1636 * Return POSIX pathconf information applicable to ulfs filesystems. 1637 */ 1638 int 1639 ulfs_pathconf(void *v) 1640 { 1641 struct vop_pathconf_args /* { 1642 struct vnode *a_vp; 1643 int a_name; 1644 register_t *a_retval; 1645 } */ *ap = v; 1646 1647 switch (ap->a_name) { 1648 case _PC_LINK_MAX: 1649 *ap->a_retval = LINK_MAX; 1650 return (0); 1651 case _PC_NAME_MAX: 1652 *ap->a_retval = LFS_MAXNAMLEN; 1653 return (0); 1654 case _PC_PATH_MAX: 1655 *ap->a_retval = PATH_MAX; 1656 return (0); 1657 case _PC_PIPE_BUF: 1658 *ap->a_retval = PIPE_BUF; 1659 return (0); 1660 case _PC_CHOWN_RESTRICTED: 1661 *ap->a_retval = 1; 1662 return (0); 1663 case _PC_NO_TRUNC: 1664 *ap->a_retval = 1; 1665 return (0); 1666 case _PC_SYNC_IO: 1667 *ap->a_retval = 1; 1668 return (0); 1669 case _PC_FILESIZEBITS: 1670 *ap->a_retval = 42; 1671 return (0); 1672 case _PC_SYMLINK_MAX: 1673 *ap->a_retval = MAXPATHLEN; 1674 return (0); 1675 case _PC_2_SYMLINKS: 1676 *ap->a_retval = 1; 1677 return (0); 1678 default: 1679 return (EINVAL); 1680 } 1681 /* NOTREACHED */ 1682 } 1683 1684 /* 1685 * Advisory record locking support 1686 */ 1687 int 1688 ulfs_advlock(void *v) 1689 { 1690 struct vop_advlock_args /* { 1691 struct vnode *a_vp; 1692 void * a_id; 1693 int a_op; 1694 struct flock *a_fl; 1695 int a_flags; 1696 } */ *ap = v; 1697 struct inode *ip; 1698 1699 ip = VTOI(ap->a_vp); 1700 return lf_advlock(ap, &ip->i_lockf, ip->i_size); 1701 } 1702 1703 /* 1704 * Initialize the vnode associated with a new inode, handle aliased 1705 * vnodes. 1706 */ 1707 void 1708 ulfs_vinit(struct mount *mntp, int (**specops)(void *), int (**fifoops)(void *), 1709 struct vnode **vpp) 1710 { 1711 struct timeval tv; 1712 struct inode *ip; 1713 struct vnode *vp; 1714 dev_t rdev; 1715 struct ulfsmount *ump; 1716 1717 vp = *vpp; 1718 ip = VTOI(vp); 1719 switch(vp->v_type = IFTOVT(ip->i_mode)) { 1720 case VCHR: 1721 case VBLK: 1722 vp->v_op = specops; 1723 ump = ip->i_ump; 1724 if (ump->um_fstype == ULFS1) 1725 rdev = (dev_t)ulfs_rw32(ip->i_ffs1_rdev, 1726 ULFS_MPNEEDSWAP(ump)); 1727 else 1728 rdev = (dev_t)ulfs_rw64(ip->i_ffs2_rdev, 1729 ULFS_MPNEEDSWAP(ump)); 1730 spec_node_init(vp, rdev); 1731 break; 1732 case VFIFO: 1733 vp->v_op = fifoops; 1734 break; 1735 case VNON: 1736 case VBAD: 1737 case VSOCK: 1738 case VLNK: 1739 case VDIR: 1740 case VREG: 1741 break; 1742 } 1743 if (ip->i_number == ULFS_ROOTINO) 1744 vp->v_vflag |= VV_ROOT; 1745 /* 1746 * Initialize modrev times 1747 */ 1748 getmicrouptime(&tv); 1749 ip->i_modrev = (uint64_t)(uint)tv.tv_sec << 32 1750 | tv.tv_usec * 4294u; 1751 *vpp = vp; 1752 } 1753 1754 /* 1755 * Allocate a new inode. 1756 */ 1757 int 1758 ulfs_makeinode(int mode, struct vnode *dvp, const struct ulfs_lookup_results *ulr, 1759 struct vnode **vpp, struct componentname *cnp) 1760 { 1761 struct inode *ip, *pdir; 1762 struct lfs_direct *newdir; 1763 struct vnode *tvp; 1764 int error; 1765 1766 ULFS_WAPBL_JUNLOCK_ASSERT(dvp->v_mount); 1767 1768 pdir = VTOI(dvp); 1769 1770 if ((mode & LFS_IFMT) == 0) 1771 mode |= LFS_IFREG; 1772 1773 if ((error = ULFS_VALLOC(dvp, mode, cnp->cn_cred, vpp)) != 0) { 1774 vput(dvp); 1775 return (error); 1776 } 1777 tvp = *vpp; 1778 ip = VTOI(tvp); 1779 ip->i_gid = pdir->i_gid; 1780 DIP_ASSIGN(ip, gid, ip->i_gid); 1781 ip->i_uid = kauth_cred_geteuid(cnp->cn_cred); 1782 DIP_ASSIGN(ip, uid, ip->i_uid); 1783 error = ULFS_WAPBL_BEGIN1(dvp->v_mount, dvp); 1784 if (error) { 1785 /* 1786 * Note, we can't VOP_VFREE(tvp) here like we should 1787 * because we can't write to the disk. Instead, we leave 1788 * the vnode dangling from the journal. 1789 */ 1790 vput(tvp); 1791 vput(dvp); 1792 return (error); 1793 } 1794 #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) 1795 if ((error = lfs_chkiq(ip, 1, cnp->cn_cred, 0))) { 1796 ULFS_VFREE(tvp, ip->i_number, mode); 1797 ULFS_WAPBL_END1(dvp->v_mount, dvp); 1798 vput(tvp); 1799 vput(dvp); 1800 return (error); 1801 } 1802 #endif 1803 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 1804 ip->i_mode = mode; 1805 DIP_ASSIGN(ip, mode, mode); 1806 tvp->v_type = IFTOVT(mode); /* Rest init'd in getnewvnode(). */ 1807 ip->i_nlink = 1; 1808 DIP_ASSIGN(ip, nlink, 1); 1809 1810 /* Authorize setting SGID if needed. */ 1811 if (ip->i_mode & ISGID) { 1812 error = kauth_authorize_vnode(cnp->cn_cred, KAUTH_VNODE_WRITE_SECURITY, 1813 tvp, NULL, genfs_can_chmod(tvp->v_type, cnp->cn_cred, ip->i_uid, 1814 ip->i_gid, mode)); 1815 if (error) { 1816 ip->i_mode &= ~ISGID; 1817 DIP_ASSIGN(ip, mode, ip->i_mode); 1818 } 1819 } 1820 1821 if (cnp->cn_flags & ISWHITEOUT) { 1822 ip->i_flags |= UF_OPAQUE; 1823 DIP_ASSIGN(ip, flags, ip->i_flags); 1824 } 1825 1826 /* 1827 * Make sure inode goes to disk before directory entry. 1828 */ 1829 if ((error = ULFS_UPDATE(tvp, NULL, NULL, UPDATE_DIROP)) != 0) 1830 goto bad; 1831 newdir = pool_cache_get(ulfs_direct_cache, PR_WAITOK); 1832 ulfs_makedirentry(ip, cnp, newdir); 1833 error = ulfs_direnter(dvp, ulr, tvp, newdir, cnp, NULL); 1834 pool_cache_put(ulfs_direct_cache, newdir); 1835 if (error) 1836 goto bad; 1837 vput(dvp); 1838 *vpp = tvp; 1839 return (0); 1840 1841 bad: 1842 /* 1843 * Write error occurred trying to update the inode 1844 * or the directory so must deallocate the inode. 1845 */ 1846 ip->i_nlink = 0; 1847 DIP_ASSIGN(ip, nlink, 0); 1848 ip->i_flag |= IN_CHANGE; 1849 /* If IN_ADIROP, account for it */ 1850 ULFS_UNMARK_VNODE(tvp); 1851 ULFS_WAPBL_UPDATE(tvp, NULL, NULL, 0); 1852 tvp->v_type = VNON; /* explodes later if VBLK */ 1853 ULFS_WAPBL_END1(dvp->v_mount, dvp); 1854 vput(tvp); 1855 vput(dvp); 1856 return (error); 1857 } 1858 1859 /* 1860 * Allocate len bytes at offset off. 1861 */ 1862 int 1863 ulfs_gop_alloc(struct vnode *vp, off_t off, off_t len, int flags, 1864 kauth_cred_t cred) 1865 { 1866 struct inode *ip = VTOI(vp); 1867 int error, delta, bshift, bsize; 1868 UVMHIST_FUNC("ulfs_gop_alloc"); UVMHIST_CALLED(ubchist); 1869 1870 error = 0; 1871 bshift = vp->v_mount->mnt_fs_bshift; 1872 bsize = 1 << bshift; 1873 1874 delta = off & (bsize - 1); 1875 off -= delta; 1876 len += delta; 1877 1878 while (len > 0) { 1879 bsize = MIN(bsize, len); 1880 1881 error = ULFS_BALLOC(vp, off, bsize, cred, flags, NULL); 1882 if (error) { 1883 goto out; 1884 } 1885 1886 /* 1887 * increase file size now, ULFS_BALLOC() requires that 1888 * EOF be up-to-date before each call. 1889 */ 1890 1891 if (ip->i_size < off + bsize) { 1892 UVMHIST_LOG(ubchist, "vp %p old 0x%x new 0x%x", 1893 vp, ip->i_size, off + bsize, 0); 1894 ip->i_size = off + bsize; 1895 DIP_ASSIGN(ip, size, ip->i_size); 1896 } 1897 1898 off += bsize; 1899 len -= bsize; 1900 } 1901 1902 out: 1903 ULFS_WAPBL_UPDATE(vp, NULL, NULL, 0); 1904 return error; 1905 } 1906 1907 void 1908 ulfs_gop_markupdate(struct vnode *vp, int flags) 1909 { 1910 u_int32_t mask = 0; 1911 1912 if ((flags & GOP_UPDATE_ACCESSED) != 0) { 1913 mask = IN_ACCESS; 1914 } 1915 if ((flags & GOP_UPDATE_MODIFIED) != 0) { 1916 if (vp->v_type == VREG) { 1917 mask |= IN_CHANGE | IN_UPDATE; 1918 } else { 1919 mask |= IN_MODIFY; 1920 } 1921 } 1922 if (mask) { 1923 struct inode *ip = VTOI(vp); 1924 1925 ip->i_flag |= mask; 1926 } 1927 } 1928
Indexes created Thu Oct 02 01:09:59 GMT 2025