ufs_vnops.c revision 137035
1/* 2 * Copyright (c) 1982, 1986, 1989, 1993, 1995 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)ufs_vnops.c 8.27 (Berkeley) 5/27/95 35 */ 36 37#include <sys/cdefs.h> 38__FBSDID("$FreeBSD: head/sys/ufs/ufs/ufs_vnops.c 137035 2004-10-29 10:15:56Z phk $"); 39 40#include "opt_mac.h" 41#include "opt_quota.h" 42#include "opt_suiddir.h" 43#include "opt_ufs.h" 44#include "opt_ffs.h" 45 46#include <sys/param.h> 47#include <sys/systm.h> 48#include <sys/malloc.h> 49#include <sys/namei.h> 50#include <sys/kernel.h> 51#include <sys/fcntl.h> 52#include <sys/stat.h> 53#include <sys/bio.h> 54#include <sys/buf.h> 55#include <sys/mount.h> 56#include <sys/unistd.h> 57#include <sys/vnode.h> 58#include <sys/dirent.h> 59#include <sys/lockf.h> 60#include <sys/event.h> 61#include <sys/conf.h> 62#include <sys/acl.h> 63#include <sys/mac.h> 64 65#include <machine/mutex.h> 66 67#include <sys/file.h> /* XXX */ 68 69#include <vm/vm.h> 70#include <vm/vm_extern.h> 71 72#include <fs/fifofs/fifo.h> 73 74#include <ufs/ufs/acl.h> 75#include <ufs/ufs/extattr.h> 76#include <ufs/ufs/quota.h> 77#include <ufs/ufs/inode.h> 78#include <ufs/ufs/dir.h> 79#include <ufs/ufs/ufsmount.h> 80#include <ufs/ufs/ufs_extern.h> 81#ifdef UFS_DIRHASH 82#include <ufs/ufs/dirhash.h> 83#endif 84 85#include <ufs/ffs/ffs_extern.h> 86 87static int ufs_access(struct vop_access_args *); 88static int ufs_advlock(struct vop_advlock_args *); 89static int ufs_chmod(struct vnode *, int, struct ucred *, struct thread *); 90static int ufs_chown(struct vnode *, uid_t, gid_t, struct ucred *, struct thread *); 91static int ufs_close(struct vop_close_args *); 92static int ufs_create(struct vop_create_args *); 93static int ufs_getattr(struct vop_getattr_args *); 94static int ufs_link(struct vop_link_args *); 95static int ufs_makeinode(int mode, struct vnode *, struct vnode **, struct componentname *); 96static int ufs_mkdir(struct vop_mkdir_args *); 97static int ufs_mknod(struct vop_mknod_args *); 98static int ufs_open(struct vop_open_args *); 99static int ufs_pathconf(struct vop_pathconf_args *); 100static int ufs_lock(struct vop_lock_args *); 101static int ufs_print(struct vop_print_args *); 102static int ufs_readlink(struct vop_readlink_args *); 103static int ufs_remove(struct vop_remove_args *); 104static int ufs_rename(struct vop_rename_args *); 105static int ufs_rmdir(struct vop_rmdir_args *); 106static int ufs_setattr(struct vop_setattr_args *); 107static int ufs_strategy(struct vop_strategy_args *); 108static int ufs_symlink(struct vop_symlink_args *); 109static int ufs_whiteout(struct vop_whiteout_args *); 110static int ufsfifo_close(struct vop_close_args *); 111static int ufsfifo_kqfilter(struct vop_kqfilter_args *); 112static int ufsfifo_read(struct vop_read_args *); 113static int ufsfifo_write(struct vop_write_args *); 114static int filt_ufsread(struct knote *kn, long hint); 115static int filt_ufswrite(struct knote *kn, long hint); 116static int filt_ufsvnode(struct knote *kn, long hint); 117static void filt_ufsdetach(struct knote *kn); 118static int ufs_kqfilter(struct vop_kqfilter_args *ap); 119 120/* 121 * A virgin directory (no blushing please). 122 */ 123static struct dirtemplate mastertemplate = { 124 0, 12, DT_DIR, 1, ".", 125 0, DIRBLKSIZ - 12, DT_DIR, 2, ".." 126}; 127static struct odirtemplate omastertemplate = { 128 0, 12, 1, ".", 129 0, DIRBLKSIZ - 12, 2, ".." 130}; 131 132void 133ufs_itimes(vp) 134 struct vnode *vp; 135{ 136 struct inode *ip; 137 struct timespec ts; 138 139 ip = VTOI(vp); 140 if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) == 0) 141 return; 142 if ((vp->v_type == VBLK || vp->v_type == VCHR) && !DOINGSOFTDEP(vp)) 143 ip->i_flag |= IN_LAZYMOD; 144 else 145 ip->i_flag |= IN_MODIFIED; 146 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 147 vfs_timestamp(&ts); 148 if (ip->i_flag & IN_ACCESS) { 149 DIP_SET(ip, i_atime, ts.tv_sec); 150 DIP_SET(ip, i_atimensec, ts.tv_nsec); 151 } 152 if (ip->i_flag & IN_UPDATE) { 153 DIP_SET(ip, i_mtime, ts.tv_sec); 154 DIP_SET(ip, i_mtimensec, ts.tv_nsec); 155 ip->i_modrev++; 156 } 157 if (ip->i_flag & IN_CHANGE) { 158 DIP_SET(ip, i_ctime, ts.tv_sec); 159 DIP_SET(ip, i_ctimensec, ts.tv_nsec); 160 } 161 } 162 ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE); 163} 164 165/* 166 * Create a regular file 167 */ 168static int 169ufs_create(ap) 170 struct vop_create_args /* { 171 struct vnode *a_dvp; 172 struct vnode **a_vpp; 173 struct componentname *a_cnp; 174 struct vattr *a_vap; 175 } */ *ap; 176{ 177 int error; 178 179 error = 180 ufs_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode), 181 ap->a_dvp, ap->a_vpp, ap->a_cnp); 182 if (error) 183 return (error); 184 VN_KNOTE_UNLOCKED(ap->a_dvp, NOTE_WRITE); 185 return (0); 186} 187 188/* 189 * Mknod vnode call 190 */ 191/* ARGSUSED */ 192static int 193ufs_mknod(ap) 194 struct vop_mknod_args /* { 195 struct vnode *a_dvp; 196 struct vnode **a_vpp; 197 struct componentname *a_cnp; 198 struct vattr *a_vap; 199 } */ *ap; 200{ 201 struct vattr *vap = ap->a_vap; 202 struct vnode **vpp = ap->a_vpp; 203 struct inode *ip; 204 ino_t ino; 205 int error; 206 207 error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), 208 ap->a_dvp, vpp, ap->a_cnp); 209 if (error) 210 return (error); 211 VN_KNOTE_UNLOCKED(ap->a_dvp, NOTE_WRITE); 212 ip = VTOI(*vpp); 213 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 214 if (vap->va_rdev != VNOVAL) { 215 /* 216 * Want to be able to use this to make badblock 217 * inodes, so don't truncate the dev number. 218 */ 219 DIP_SET(ip, i_rdev, vap->va_rdev); 220 } 221 /* 222 * Remove inode, then reload it through VFS_VGET so it is 223 * checked to see if it is an alias of an existing entry in 224 * the inode cache. 225 */ 226 vput(*vpp); 227 (*vpp)->v_type = VNON; 228 ino = ip->i_number; /* Save this before vgone() invalidates ip. */ 229 vgone(*vpp); 230 error = VFS_VGET(ap->a_dvp->v_mount, ino, LK_EXCLUSIVE, vpp); 231 if (error) { 232 *vpp = NULL; 233 return (error); 234 } 235 return (0); 236} 237 238/* 239 * Open called. 240 * 241 * Nothing to do. 242 */ 243/* ARGSUSED */ 244static int 245ufs_open(ap) 246 struct vop_open_args /* { 247 struct vnode *a_vp; 248 int a_mode; 249 struct ucred *a_cred; 250 struct thread *a_td; 251 } */ *ap; 252{ 253 254 if (ap->a_vp->v_type == VCHR || ap->a_vp->v_type == VBLK) 255 return (EOPNOTSUPP); 256 257 /* 258 * Files marked append-only must be opened for appending. 259 */ 260 if ((VTOI(ap->a_vp)->i_flags & APPEND) && 261 (ap->a_mode & (FWRITE | O_APPEND)) == FWRITE) 262 return (EPERM); 263 return (0); 264} 265 266/* 267 * Close called. 268 * 269 * Update the times on the inode. 270 */ 271/* ARGSUSED */ 272static int 273ufs_close(ap) 274 struct vop_close_args /* { 275 struct vnode *a_vp; 276 int a_fflag; 277 struct ucred *a_cred; 278 struct thread *a_td; 279 } */ *ap; 280{ 281 struct vnode *vp = ap->a_vp; 282 struct mount *mp; 283 284 VI_LOCK(vp); 285 if (vp->v_usecount > 1) { 286 ufs_itimes(vp); 287 VI_UNLOCK(vp); 288 } else { 289 VI_UNLOCK(vp); 290 /* 291 * If we are closing the last reference to an unlinked 292 * file, then it will be freed by the inactive routine. 293 * Because the freeing causes a the filesystem to be 294 * modified, it must be held up during periods when the 295 * filesystem is suspended. 296 * 297 * XXX - EAGAIN is returned to prevent vn_close from 298 * repeating the vrele operation. 299 */ 300 if (vp->v_type == VREG && VTOI(vp)->i_effnlink == 0) { 301 (void) vn_start_write(vp, &mp, V_WAIT); 302 vrele(vp); 303 vn_finished_write(mp); 304 return (EAGAIN); 305 } 306 } 307 return (0); 308} 309 310static int 311ufs_access(ap) 312 struct vop_access_args /* { 313 struct vnode *a_vp; 314 int a_mode; 315 struct ucred *a_cred; 316 struct thread *a_td; 317 } */ *ap; 318{ 319 struct vnode *vp = ap->a_vp; 320 struct inode *ip = VTOI(vp); 321 mode_t mode = ap->a_mode; 322 int error; 323#ifdef UFS_ACL 324 struct acl *acl; 325#endif 326 327 /* 328 * Disallow write attempts on read-only filesystems; 329 * unless the file is a socket, fifo, or a block or 330 * character device resident on the filesystem. 331 */ 332 if (mode & VWRITE) { 333 switch (vp->v_type) { 334 case VDIR: 335 case VLNK: 336 case VREG: 337 if (vp->v_mount->mnt_flag & MNT_RDONLY) 338 return (EROFS); 339#ifdef QUOTA 340 if ((error = getinoquota(ip)) != 0) 341 return (error); 342#endif 343 break; 344 default: 345 break; 346 } 347 } 348 349 /* If immutable bit set, nobody gets to write it. */ 350 if ((mode & VWRITE) && (ip->i_flags & (IMMUTABLE | SF_SNAPSHOT))) 351 return (EPERM); 352 353#ifdef UFS_ACL 354 if ((vp->v_mount->mnt_flag & MNT_ACLS) != 0) { 355 MALLOC(acl, struct acl *, sizeof(*acl), M_ACL, M_WAITOK); 356 error = VOP_GETACL(vp, ACL_TYPE_ACCESS, acl, ap->a_cred, 357 ap->a_td); 358 switch (error) { 359 case EOPNOTSUPP: 360 error = vaccess(vp->v_type, ip->i_mode, ip->i_uid, 361 ip->i_gid, ap->a_mode, ap->a_cred, NULL); 362 break; 363 case 0: 364 error = vaccess_acl_posix1e(vp->v_type, ip->i_uid, 365 ip->i_gid, acl, ap->a_mode, ap->a_cred, NULL); 366 break; 367 default: 368 printf( 369"ufs_access(): Error retrieving ACL on object (%d).\n", 370 error); 371 /* 372 * XXX: Fall back until debugged. Should 373 * eventually possibly log an error, and return 374 * EPERM for safety. 375 */ 376 error = vaccess(vp->v_type, ip->i_mode, ip->i_uid, 377 ip->i_gid, ap->a_mode, ap->a_cred, NULL); 378 } 379 FREE(acl, M_ACL); 380 } else 381#endif /* !UFS_ACL */ 382 error = vaccess(vp->v_type, ip->i_mode, ip->i_uid, ip->i_gid, 383 ap->a_mode, ap->a_cred, NULL); 384 return (error); 385} 386 387/* ARGSUSED */ 388static int 389ufs_getattr(ap) 390 struct vop_getattr_args /* { 391 struct vnode *a_vp; 392 struct vattr *a_vap; 393 struct ucred *a_cred; 394 struct thread *a_td; 395 } */ *ap; 396{ 397 struct vnode *vp = ap->a_vp; 398 struct inode *ip = VTOI(vp); 399 struct vattr *vap = ap->a_vap; 400 401 ufs_itimes(vp); 402 /* 403 * Copy from inode table 404 */ 405 vap->va_fsid = dev2udev(ip->i_dev); 406 vap->va_fileid = ip->i_number; 407 vap->va_mode = ip->i_mode & ~IFMT; 408 vap->va_nlink = ip->i_effnlink; 409 vap->va_uid = ip->i_uid; 410 vap->va_gid = ip->i_gid; 411 if (ip->i_ump->um_fstype == UFS1) { 412 vap->va_rdev = ip->i_din1->di_rdev; 413 vap->va_size = ip->i_din1->di_size; 414 vap->va_atime.tv_sec = ip->i_din1->di_atime; 415 vap->va_atime.tv_nsec = ip->i_din1->di_atimensec; 416 vap->va_mtime.tv_sec = ip->i_din1->di_mtime; 417 vap->va_mtime.tv_nsec = ip->i_din1->di_mtimensec; 418 vap->va_ctime.tv_sec = ip->i_din1->di_ctime; 419 vap->va_ctime.tv_nsec = ip->i_din1->di_ctimensec; 420 vap->va_birthtime.tv_sec = 0; 421 vap->va_birthtime.tv_nsec = 0; 422 vap->va_bytes = dbtob((u_quad_t)ip->i_din1->di_blocks); 423 } else { 424 vap->va_rdev = ip->i_din2->di_rdev; 425 vap->va_size = ip->i_din2->di_size; 426 vap->va_atime.tv_sec = ip->i_din2->di_atime; 427 vap->va_atime.tv_nsec = ip->i_din2->di_atimensec; 428 vap->va_mtime.tv_sec = ip->i_din2->di_mtime; 429 vap->va_mtime.tv_nsec = ip->i_din2->di_mtimensec; 430 vap->va_ctime.tv_sec = ip->i_din2->di_ctime; 431 vap->va_ctime.tv_nsec = ip->i_din2->di_ctimensec; 432 vap->va_birthtime.tv_sec = ip->i_din2->di_birthtime; 433 vap->va_birthtime.tv_nsec = ip->i_din2->di_birthnsec; 434 vap->va_bytes = dbtob((u_quad_t)ip->i_din2->di_blocks); 435 } 436 vap->va_flags = ip->i_flags; 437 vap->va_gen = ip->i_gen; 438 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; 439 vap->va_type = IFTOVT(ip->i_mode); 440 vap->va_filerev = ip->i_modrev; 441 return (0); 442} 443 444/* 445 * Set attribute vnode op. called from several syscalls 446 */ 447static int 448ufs_setattr(ap) 449 struct vop_setattr_args /* { 450 struct vnode *a_vp; 451 struct vattr *a_vap; 452 struct ucred *a_cred; 453 struct thread *a_td; 454 } */ *ap; 455{ 456 struct vattr *vap = ap->a_vap; 457 struct vnode *vp = ap->a_vp; 458 struct inode *ip = VTOI(vp); 459 struct ucred *cred = ap->a_cred; 460 struct thread *td = ap->a_td; 461 int error; 462 463 /* 464 * Check for unsettable attributes. 465 */ 466 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || 467 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || 468 (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || 469 ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { 470 return (EINVAL); 471 } 472 if (vap->va_flags != VNOVAL) { 473 if (vp->v_mount->mnt_flag & MNT_RDONLY) 474 return (EROFS); 475 /* 476 * Callers may only modify the file flags on objects they 477 * have VADMIN rights for. 478 */ 479 if ((error = VOP_ACCESS(vp, VADMIN, cred, td))) 480 return (error); 481 /* 482 * Unprivileged processes and privileged processes in 483 * jail() are not permitted to unset system flags, or 484 * modify flags if any system flags are set. 485 * Privileged non-jail processes may not modify system flags 486 * if securelevel > 0 and any existing system flags are set. 487 */ 488 if (!suser_cred(cred, 0)) { 489 if (ip->i_flags 490 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND)) { 491 error = securelevel_gt(cred, 0); 492 if (error) 493 return (error); 494 } 495 /* Snapshot flag cannot be set or cleared */ 496 if (((vap->va_flags & SF_SNAPSHOT) != 0 && 497 (ip->i_flags & SF_SNAPSHOT) == 0) || 498 ((vap->va_flags & SF_SNAPSHOT) == 0 && 499 (ip->i_flags & SF_SNAPSHOT) != 0)) 500 return (EPERM); 501 ip->i_flags = vap->va_flags; 502 DIP_SET(ip, i_flags, vap->va_flags); 503 } else { 504 if (ip->i_flags 505 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND) || 506 (vap->va_flags & UF_SETTABLE) != vap->va_flags) 507 return (EPERM); 508 ip->i_flags &= SF_SETTABLE; 509 ip->i_flags |= (vap->va_flags & UF_SETTABLE); 510 DIP_SET(ip, i_flags, ip->i_flags); 511 } 512 ip->i_flag |= IN_CHANGE; 513 if (vap->va_flags & (IMMUTABLE | APPEND)) 514 return (0); 515 } 516 if (ip->i_flags & (IMMUTABLE | APPEND)) 517 return (EPERM); 518 /* 519 * Go through the fields and update iff not VNOVAL. 520 */ 521 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) { 522 if (vp->v_mount->mnt_flag & MNT_RDONLY) 523 return (EROFS); 524 if ((error = ufs_chown(vp, vap->va_uid, vap->va_gid, cred, 525 td)) != 0) 526 return (error); 527 } 528 if (vap->va_size != VNOVAL) { 529 /* 530 * Disallow write attempts on read-only filesystems; 531 * unless the file is a socket, fifo, or a block or 532 * character device resident on the filesystem. 533 */ 534 switch (vp->v_type) { 535 case VDIR: 536 return (EISDIR); 537 case VLNK: 538 case VREG: 539 if (vp->v_mount->mnt_flag & MNT_RDONLY) 540 return (EROFS); 541 if ((ip->i_flags & SF_SNAPSHOT) != 0) 542 return (EPERM); 543 break; 544 default: 545 break; 546 } 547 if ((error = UFS_TRUNCATE(vp, vap->va_size, IO_NORMAL, 548 cred, td)) != 0) 549 return (error); 550 } 551 if (vap->va_atime.tv_sec != VNOVAL || 552 vap->va_mtime.tv_sec != VNOVAL || 553 vap->va_birthtime.tv_sec != VNOVAL) { 554 if (vp->v_mount->mnt_flag & MNT_RDONLY) 555 return (EROFS); 556 if ((ip->i_flags & SF_SNAPSHOT) != 0) 557 return (EPERM); 558 /* 559 * From utimes(2): 560 * If times is NULL, ... The caller must be the owner of 561 * the file, have permission to write the file, or be the 562 * super-user. 563 * If times is non-NULL, ... The caller must be the owner of 564 * the file or be the super-user. 565 */ 566 if ((error = VOP_ACCESS(vp, VADMIN, cred, td)) && 567 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 568 (error = VOP_ACCESS(vp, VWRITE, cred, td)))) 569 return (error); 570 if (vap->va_atime.tv_sec != VNOVAL) 571 ip->i_flag |= IN_ACCESS; 572 if (vap->va_mtime.tv_sec != VNOVAL) 573 ip->i_flag |= IN_CHANGE | IN_UPDATE; 574 if (vap->va_birthtime.tv_sec != VNOVAL && 575 ip->i_ump->um_fstype == UFS2) 576 ip->i_flag |= IN_MODIFIED; 577 ufs_itimes(vp); 578 if (vap->va_atime.tv_sec != VNOVAL) { 579 DIP_SET(ip, i_atime, vap->va_atime.tv_sec); 580 DIP_SET(ip, i_atimensec, vap->va_atime.tv_nsec); 581 } 582 if (vap->va_mtime.tv_sec != VNOVAL) { 583 DIP_SET(ip, i_mtime, vap->va_mtime.tv_sec); 584 DIP_SET(ip, i_mtimensec, vap->va_mtime.tv_nsec); 585 } 586 if (vap->va_birthtime.tv_sec != VNOVAL && 587 ip->i_ump->um_fstype == UFS2) { 588 ip->i_din2->di_birthtime = vap->va_birthtime.tv_sec; 589 ip->i_din2->di_birthnsec = vap->va_birthtime.tv_nsec; 590 } 591 error = UFS_UPDATE(vp, 0); 592 if (error) 593 return (error); 594 } 595 error = 0; 596 if (vap->va_mode != (mode_t)VNOVAL) { 597 if (vp->v_mount->mnt_flag & MNT_RDONLY) 598 return (EROFS); 599 if ((ip->i_flags & SF_SNAPSHOT) != 0 && (vap->va_mode & 600 (S_IXUSR | S_IWUSR | S_IXGRP | S_IWGRP | S_IXOTH | S_IWOTH))) 601 return (EPERM); 602 error = ufs_chmod(vp, (int)vap->va_mode, cred, td); 603 } 604 VN_KNOTE_UNLOCKED(vp, NOTE_ATTRIB); 605 return (error); 606} 607 608/* 609 * Change the mode on a file. 610 * Inode must be locked before calling. 611 */ 612static int 613ufs_chmod(vp, mode, cred, td) 614 struct vnode *vp; 615 int mode; 616 struct ucred *cred; 617 struct thread *td; 618{ 619 struct inode *ip = VTOI(vp); 620 int error; 621 622 /* 623 * To modify the permissions on a file, must possess VADMIN 624 * for that file. 625 */ 626 if ((error = VOP_ACCESS(vp, VADMIN, cred, td))) 627 return (error); 628 /* 629 * Privileged processes may set the sticky bit on non-directories, 630 * as well as set the setgid bit on a file with a group that the 631 * process is not a member of. Both of these are allowed in 632 * jail(8). 633 */ 634 if (vp->v_type != VDIR && (mode & S_ISTXT)) { 635 if (suser_cred(cred, SUSER_ALLOWJAIL)) 636 return (EFTYPE); 637 } 638 if (!groupmember(ip->i_gid, cred) && (mode & ISGID)) { 639 error = suser_cred(cred, SUSER_ALLOWJAIL); 640 if (error) 641 return (error); 642 } 643 ip->i_mode &= ~ALLPERMS; 644 ip->i_mode |= (mode & ALLPERMS); 645 DIP_SET(ip, i_mode, ip->i_mode); 646 ip->i_flag |= IN_CHANGE; 647 return (0); 648} 649 650/* 651 * Perform chown operation on inode ip; 652 * inode must be locked prior to call. 653 */ 654static int 655ufs_chown(vp, uid, gid, cred, td) 656 struct vnode *vp; 657 uid_t uid; 658 gid_t gid; 659 struct ucred *cred; 660 struct thread *td; 661{ 662 struct inode *ip = VTOI(vp); 663 uid_t ouid; 664 gid_t ogid; 665 int error = 0; 666#ifdef QUOTA 667 int i; 668 ufs2_daddr_t change; 669#endif 670 671 if (uid == (uid_t)VNOVAL) 672 uid = ip->i_uid; 673 if (gid == (gid_t)VNOVAL) 674 gid = ip->i_gid; 675 /* 676 * To modify the ownership of a file, must possess VADMIN 677 * for that file. 678 */ 679 if ((error = VOP_ACCESS(vp, VADMIN, cred, td))) 680 return (error); 681 /* 682 * To change the owner of a file, or change the group of a file 683 * to a group of which we are not a member, the caller must 684 * have privilege. 685 */ 686 if ((uid != ip->i_uid || 687 (gid != ip->i_gid && !groupmember(gid, cred))) && 688 (error = suser_cred(cred, SUSER_ALLOWJAIL))) 689 return (error); 690 ogid = ip->i_gid; 691 ouid = ip->i_uid; 692#ifdef QUOTA 693 if ((error = getinoquota(ip)) != 0) 694 return (error); 695 if (ouid == uid) { 696 dqrele(vp, ip->i_dquot[USRQUOTA]); 697 ip->i_dquot[USRQUOTA] = NODQUOT; 698 } 699 if (ogid == gid) { 700 dqrele(vp, ip->i_dquot[GRPQUOTA]); 701 ip->i_dquot[GRPQUOTA] = NODQUOT; 702 } 703 change = DIP(ip, i_blocks); 704 (void) chkdq(ip, -change, cred, CHOWN); 705 (void) chkiq(ip, -1, cred, CHOWN); 706 for (i = 0; i < MAXQUOTAS; i++) { 707 dqrele(vp, ip->i_dquot[i]); 708 ip->i_dquot[i] = NODQUOT; 709 } 710#endif 711 ip->i_gid = gid; 712 DIP_SET(ip, i_gid, gid); 713 ip->i_uid = uid; 714 DIP_SET(ip, i_uid, uid); 715#ifdef QUOTA 716 if ((error = getinoquota(ip)) == 0) { 717 if (ouid == uid) { 718 dqrele(vp, ip->i_dquot[USRQUOTA]); 719 ip->i_dquot[USRQUOTA] = NODQUOT; 720 } 721 if (ogid == gid) { 722 dqrele(vp, ip->i_dquot[GRPQUOTA]); 723 ip->i_dquot[GRPQUOTA] = NODQUOT; 724 } 725 if ((error = chkdq(ip, change, cred, CHOWN)) == 0) { 726 if ((error = chkiq(ip, 1, cred, CHOWN)) == 0) 727 goto good; 728 else 729 (void) chkdq(ip, -change, cred, CHOWN|FORCE); 730 } 731 for (i = 0; i < MAXQUOTAS; i++) { 732 dqrele(vp, ip->i_dquot[i]); 733 ip->i_dquot[i] = NODQUOT; 734 } 735 } 736 ip->i_gid = ogid; 737 DIP_SET(ip, i_gid, ogid); 738 ip->i_uid = ouid; 739 DIP_SET(ip, i_uid, ouid); 740 if (getinoquota(ip) == 0) { 741 if (ouid == uid) { 742 dqrele(vp, ip->i_dquot[USRQUOTA]); 743 ip->i_dquot[USRQUOTA] = NODQUOT; 744 } 745 if (ogid == gid) { 746 dqrele(vp, ip->i_dquot[GRPQUOTA]); 747 ip->i_dquot[GRPQUOTA] = NODQUOT; 748 } 749 (void) chkdq(ip, change, cred, FORCE|CHOWN); 750 (void) chkiq(ip, 1, cred, FORCE|CHOWN); 751 (void) getinoquota(ip); 752 } 753 return (error); 754good: 755 if (getinoquota(ip)) 756 panic("ufs_chown: lost quota"); 757#endif /* QUOTA */ 758 ip->i_flag |= IN_CHANGE; 759 if (suser_cred(cred, SUSER_ALLOWJAIL) && (ouid != uid || ogid != gid)) { 760 ip->i_mode &= ~(ISUID | ISGID); 761 DIP_SET(ip, i_mode, ip->i_mode); 762 } 763 return (0); 764} 765 766static int 767ufs_remove(ap) 768 struct vop_remove_args /* { 769 struct vnode *a_dvp; 770 struct vnode *a_vp; 771 struct componentname *a_cnp; 772 } */ *ap; 773{ 774 struct inode *ip; 775 struct vnode *vp = ap->a_vp; 776 struct vnode *dvp = ap->a_dvp; 777 int error; 778 779 ip = VTOI(vp); 780 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) || 781 (VTOI(dvp)->i_flags & APPEND)) { 782 error = EPERM; 783 goto out; 784 } 785 error = ufs_dirremove(dvp, ip, ap->a_cnp->cn_flags, 0); 786 if (ip->i_nlink <= 0) 787 vp->v_vflag |= VV_NOSYNC; 788 VN_KNOTE_UNLOCKED(vp, NOTE_DELETE); 789 VN_KNOTE_UNLOCKED(dvp, NOTE_WRITE); 790out: 791 return (error); 792} 793 794/* 795 * link vnode call 796 */ 797static int 798ufs_link(ap) 799 struct vop_link_args /* { 800 struct vnode *a_tdvp; 801 struct vnode *a_vp; 802 struct componentname *a_cnp; 803 } */ *ap; 804{ 805 struct vnode *vp = ap->a_vp; 806 struct vnode *tdvp = ap->a_tdvp; 807 struct componentname *cnp = ap->a_cnp; 808 struct inode *ip; 809 struct direct newdir; 810 int error; 811 812#ifdef DIAGNOSTIC 813 if ((cnp->cn_flags & HASBUF) == 0) 814 panic("ufs_link: no name"); 815#endif 816 if (tdvp->v_mount != vp->v_mount) { 817 error = EXDEV; 818 goto out; 819 } 820 ip = VTOI(vp); 821 if ((nlink_t)ip->i_nlink >= LINK_MAX) { 822 error = EMLINK; 823 goto out; 824 } 825 if (ip->i_flags & (IMMUTABLE | APPEND)) { 826 error = EPERM; 827 goto out; 828 } 829 ip->i_effnlink++; 830 ip->i_nlink++; 831 DIP_SET(ip, i_nlink, ip->i_nlink); 832 ip->i_flag |= IN_CHANGE; 833 if (DOINGSOFTDEP(vp)) 834 softdep_change_linkcnt(ip); 835 error = UFS_UPDATE(vp, !(DOINGSOFTDEP(vp) | DOINGASYNC(vp))); 836 if (!error) { 837 ufs_makedirentry(ip, cnp, &newdir); 838 error = ufs_direnter(tdvp, vp, &newdir, cnp, NULL); 839 } 840 841 if (error) { 842 ip->i_effnlink--; 843 ip->i_nlink--; 844 DIP_SET(ip, i_nlink, ip->i_nlink); 845 ip->i_flag |= IN_CHANGE; 846 if (DOINGSOFTDEP(vp)) 847 softdep_change_linkcnt(ip); 848 } 849out: 850 VN_KNOTE_UNLOCKED(vp, NOTE_LINK); 851 VN_KNOTE_UNLOCKED(tdvp, NOTE_WRITE); 852 return (error); 853} 854 855/* 856 * whiteout vnode call 857 */ 858static int 859ufs_whiteout(ap) 860 struct vop_whiteout_args /* { 861 struct vnode *a_dvp; 862 struct componentname *a_cnp; 863 int a_flags; 864 } */ *ap; 865{ 866 struct vnode *dvp = ap->a_dvp; 867 struct componentname *cnp = ap->a_cnp; 868 struct direct newdir; 869 int error = 0; 870 871 switch (ap->a_flags) { 872 case LOOKUP: 873 /* 4.4 format directories support whiteout operations */ 874 if (dvp->v_mount->mnt_maxsymlinklen > 0) 875 return (0); 876 return (EOPNOTSUPP); 877 878 case CREATE: 879 /* create a new directory whiteout */ 880#ifdef DIAGNOSTIC 881 if ((cnp->cn_flags & SAVENAME) == 0) 882 panic("ufs_whiteout: missing name"); 883 if (dvp->v_mount->mnt_maxsymlinklen <= 0) 884 panic("ufs_whiteout: old format filesystem"); 885#endif 886 887 newdir.d_ino = WINO; 888 newdir.d_namlen = cnp->cn_namelen; 889 bcopy(cnp->cn_nameptr, newdir.d_name, (unsigned)cnp->cn_namelen + 1); 890 newdir.d_type = DT_WHT; 891 error = ufs_direnter(dvp, NULL, &newdir, cnp, NULL); 892 break; 893 894 case DELETE: 895 /* remove an existing directory whiteout */ 896#ifdef DIAGNOSTIC 897 if (dvp->v_mount->mnt_maxsymlinklen <= 0) 898 panic("ufs_whiteout: old format filesystem"); 899#endif 900 901 cnp->cn_flags &= ~DOWHITEOUT; 902 error = ufs_dirremove(dvp, NULL, cnp->cn_flags, 0); 903 break; 904 default: 905 panic("ufs_whiteout: unknown op"); 906 } 907 return (error); 908} 909 910/* 911 * Rename system call. 912 * rename("foo", "bar"); 913 * is essentially 914 * unlink("bar"); 915 * link("foo", "bar"); 916 * unlink("foo"); 917 * but ``atomically''. Can't do full commit without saving state in the 918 * inode on disk which isn't feasible at this time. Best we can do is 919 * always guarantee the target exists. 920 * 921 * Basic algorithm is: 922 * 923 * 1) Bump link count on source while we're linking it to the 924 * target. This also ensure the inode won't be deleted out 925 * from underneath us while we work (it may be truncated by 926 * a concurrent `trunc' or `open' for creation). 927 * 2) Link source to destination. If destination already exists, 928 * delete it first. 929 * 3) Unlink source reference to inode if still around. If a 930 * directory was moved and the parent of the destination 931 * is different from the source, patch the ".." entry in the 932 * directory. 933 */ 934static int 935ufs_rename(ap) 936 struct vop_rename_args /* { 937 struct vnode *a_fdvp; 938 struct vnode *a_fvp; 939 struct componentname *a_fcnp; 940 struct vnode *a_tdvp; 941 struct vnode *a_tvp; 942 struct componentname *a_tcnp; 943 } */ *ap; 944{ 945 struct vnode *tvp = ap->a_tvp; 946 struct vnode *tdvp = ap->a_tdvp; 947 struct vnode *fvp = ap->a_fvp; 948 struct vnode *fdvp = ap->a_fdvp; 949 struct componentname *tcnp = ap->a_tcnp; 950 struct componentname *fcnp = ap->a_fcnp; 951 struct thread *td = fcnp->cn_thread; 952 struct inode *ip, *xp, *dp; 953 struct direct newdir; 954 int doingdirectory = 0, oldparent = 0, newparent = 0; 955 int error = 0, ioflag; 956 957#ifdef DIAGNOSTIC 958 if ((tcnp->cn_flags & HASBUF) == 0 || 959 (fcnp->cn_flags & HASBUF) == 0) 960 panic("ufs_rename: no name"); 961#endif 962 /* 963 * Check for cross-device rename. 964 */ 965 if ((fvp->v_mount != tdvp->v_mount) || 966 (tvp && (fvp->v_mount != tvp->v_mount))) { 967 error = EXDEV; 968abortit: 969 if (tdvp == tvp) 970 vrele(tdvp); 971 else 972 vput(tdvp); 973 if (tvp) 974 vput(tvp); 975 vrele(fdvp); 976 vrele(fvp); 977 return (error); 978 } 979 980 if (tvp && ((VTOI(tvp)->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) || 981 (VTOI(tdvp)->i_flags & APPEND))) { 982 error = EPERM; 983 goto abortit; 984 } 985 986 /* 987 * Renaming a file to itself has no effect. The upper layers should 988 * not call us in that case. Temporarily just warn if they do. 989 */ 990 if (fvp == tvp) { 991 printf("ufs_rename: fvp == tvp (can't happen)\n"); 992 error = 0; 993 goto abortit; 994 } 995 996 if ((error = vn_lock(fvp, LK_EXCLUSIVE, td)) != 0) 997 goto abortit; 998 dp = VTOI(fdvp); 999 ip = VTOI(fvp); 1000 if (ip->i_nlink >= LINK_MAX) { 1001 VOP_UNLOCK(fvp, 0, td); 1002 error = EMLINK; 1003 goto abortit; 1004 } 1005 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) 1006 || (dp->i_flags & APPEND)) { 1007 VOP_UNLOCK(fvp, 0, td); 1008 error = EPERM; 1009 goto abortit; 1010 } 1011 if ((ip->i_mode & IFMT) == IFDIR) { 1012 /* 1013 * Avoid ".", "..", and aliases of "." for obvious reasons. 1014 */ 1015 if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') || 1016 dp == ip || (fcnp->cn_flags | tcnp->cn_flags) & ISDOTDOT || 1017 (ip->i_flag & IN_RENAME)) { 1018 VOP_UNLOCK(fvp, 0, td); 1019 error = EINVAL; 1020 goto abortit; 1021 } 1022 ip->i_flag |= IN_RENAME; 1023 oldparent = dp->i_number; 1024 doingdirectory = 1; 1025 } 1026 VN_KNOTE_UNLOCKED(fdvp, NOTE_WRITE); /* XXX right place? */ 1027 vrele(fdvp); 1028 1029 /* 1030 * When the target exists, both the directory 1031 * and target vnodes are returned locked. 1032 */ 1033 dp = VTOI(tdvp); 1034 xp = NULL; 1035 if (tvp) 1036 xp = VTOI(tvp); 1037 1038 /* 1039 * 1) Bump link count while we're moving stuff 1040 * around. If we crash somewhere before 1041 * completing our work, the link count 1042 * may be wrong, but correctable. 1043 */ 1044 ip->i_effnlink++; 1045 ip->i_nlink++; 1046 DIP_SET(ip, i_nlink, ip->i_nlink); 1047 ip->i_flag |= IN_CHANGE; 1048 if (DOINGSOFTDEP(fvp)) 1049 softdep_change_linkcnt(ip); 1050 if ((error = UFS_UPDATE(fvp, !(DOINGSOFTDEP(fvp) | 1051 DOINGASYNC(fvp)))) != 0) { 1052 VOP_UNLOCK(fvp, 0, td); 1053 goto bad; 1054 } 1055 1056 /* 1057 * If ".." must be changed (ie the directory gets a new 1058 * parent) then the source directory must not be in the 1059 * directory heirarchy above the target, as this would 1060 * orphan everything below the source directory. Also 1061 * the user must have write permission in the source so 1062 * as to be able to change "..". We must repeat the call 1063 * to namei, as the parent directory is unlocked by the 1064 * call to checkpath(). 1065 */ 1066 error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred, tcnp->cn_thread); 1067 VOP_UNLOCK(fvp, 0, td); 1068 if (oldparent != dp->i_number) 1069 newparent = dp->i_number; 1070 if (doingdirectory && newparent) { 1071 if (error) /* write access check above */ 1072 goto bad; 1073 if (xp != NULL) 1074 vput(tvp); 1075 error = ufs_checkpath(ip, dp, tcnp->cn_cred); 1076 if (error) 1077 goto out; 1078 if ((tcnp->cn_flags & SAVESTART) == 0) 1079 panic("ufs_rename: lost to startdir"); 1080 VREF(tdvp); 1081 error = relookup(tdvp, &tvp, tcnp); 1082 if (error) 1083 goto out; 1084 vrele(tdvp); 1085 dp = VTOI(tdvp); 1086 xp = NULL; 1087 if (tvp) 1088 xp = VTOI(tvp); 1089 } 1090 /* 1091 * 2) If target doesn't exist, link the target 1092 * to the source and unlink the source. 1093 * Otherwise, rewrite the target directory 1094 * entry to reference the source inode and 1095 * expunge the original entry's existence. 1096 */ 1097 if (xp == NULL) { 1098 if (dp->i_dev != ip->i_dev) 1099 panic("ufs_rename: EXDEV"); 1100 /* 1101 * Account for ".." in new directory. 1102 * When source and destination have the same 1103 * parent we don't fool with the link count. 1104 */ 1105 if (doingdirectory && newparent) { 1106 if ((nlink_t)dp->i_nlink >= LINK_MAX) { 1107 error = EMLINK; 1108 goto bad; 1109 } 1110 dp->i_effnlink++; 1111 dp->i_nlink++; 1112 DIP_SET(dp, i_nlink, dp->i_nlink); 1113 dp->i_flag |= IN_CHANGE; 1114 if (DOINGSOFTDEP(tdvp)) 1115 softdep_change_linkcnt(dp); 1116 error = UFS_UPDATE(tdvp, !(DOINGSOFTDEP(tdvp) | 1117 DOINGASYNC(tdvp))); 1118 if (error) 1119 goto bad; 1120 } 1121 ufs_makedirentry(ip, tcnp, &newdir); 1122 error = ufs_direnter(tdvp, NULL, &newdir, tcnp, NULL); 1123 if (error) { 1124 if (doingdirectory && newparent) { 1125 dp->i_effnlink--; 1126 dp->i_nlink--; 1127 DIP_SET(dp, i_nlink, dp->i_nlink); 1128 dp->i_flag |= IN_CHANGE; 1129 if (DOINGSOFTDEP(tdvp)) 1130 softdep_change_linkcnt(dp); 1131 (void)UFS_UPDATE(tdvp, 1); 1132 } 1133 goto bad; 1134 } 1135 VN_KNOTE_UNLOCKED(tdvp, NOTE_WRITE); 1136 vput(tdvp); 1137 } else { 1138 if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) 1139 panic("ufs_rename: EXDEV"); 1140 /* 1141 * Short circuit rename(foo, foo). 1142 */ 1143 if (xp->i_number == ip->i_number) 1144 panic("ufs_rename: same file"); 1145 /* 1146 * If the parent directory is "sticky", then the caller 1147 * must possess VADMIN for the parent directory, or the 1148 * destination of the rename. This implements append-only 1149 * directories. 1150 */ 1151 if ((dp->i_mode & S_ISTXT) && 1152 VOP_ACCESS(tdvp, VADMIN, tcnp->cn_cred, td) && 1153 VOP_ACCESS(tvp, VADMIN, tcnp->cn_cred, td)) { 1154 error = EPERM; 1155 goto bad; 1156 } 1157 /* 1158 * Target must be empty if a directory and have no links 1159 * to it. Also, ensure source and target are compatible 1160 * (both directories, or both not directories). 1161 */ 1162 if ((xp->i_mode&IFMT) == IFDIR) { 1163 if ((xp->i_effnlink > 2) || 1164 !ufs_dirempty(xp, dp->i_number, tcnp->cn_cred)) { 1165 error = ENOTEMPTY; 1166 goto bad; 1167 } 1168 if (!doingdirectory) { 1169 error = ENOTDIR; 1170 goto bad; 1171 } 1172 cache_purge(tdvp); 1173 } else if (doingdirectory) { 1174 error = EISDIR; 1175 goto bad; 1176 } 1177 error = ufs_dirrewrite(dp, xp, ip->i_number, 1178 IFTODT(ip->i_mode), 1179 (doingdirectory && newparent) ? newparent : doingdirectory); 1180 if (error) 1181 goto bad; 1182 if (doingdirectory) { 1183 if (!newparent) { 1184 dp->i_effnlink--; 1185 if (DOINGSOFTDEP(tdvp)) 1186 softdep_change_linkcnt(dp); 1187 } 1188 xp->i_effnlink--; 1189 if (DOINGSOFTDEP(tvp)) 1190 softdep_change_linkcnt(xp); 1191 } 1192 if (doingdirectory && !DOINGSOFTDEP(tvp)) { 1193 /* 1194 * Truncate inode. The only stuff left in the directory 1195 * is "." and "..". The "." reference is inconsequential 1196 * since we are quashing it. We have removed the "." 1197 * reference and the reference in the parent directory, 1198 * but there may be other hard links. The soft 1199 * dependency code will arrange to do these operations 1200 * after the parent directory entry has been deleted on 1201 * disk, so when running with that code we avoid doing 1202 * them now. 1203 */ 1204 if (!newparent) { 1205 dp->i_nlink--; 1206 DIP_SET(dp, i_nlink, dp->i_nlink); 1207 dp->i_flag |= IN_CHANGE; 1208 } 1209 xp->i_nlink--; 1210 DIP_SET(xp, i_nlink, xp->i_nlink); 1211 xp->i_flag |= IN_CHANGE; 1212 ioflag = IO_NORMAL; 1213 if (DOINGASYNC(tvp)) 1214 ioflag |= IO_SYNC; 1215 if ((error = UFS_TRUNCATE(tvp, (off_t)0, ioflag, 1216 tcnp->cn_cred, tcnp->cn_thread)) != 0) 1217 goto bad; 1218 } 1219 VN_KNOTE_UNLOCKED(tdvp, NOTE_WRITE); 1220 vput(tdvp); 1221 VN_KNOTE_UNLOCKED(tvp, NOTE_DELETE); 1222 vput(tvp); 1223 xp = NULL; 1224 } 1225 1226 /* 1227 * 3) Unlink the source. 1228 */ 1229 fcnp->cn_flags &= ~MODMASK; 1230 fcnp->cn_flags |= LOCKPARENT | LOCKLEAF; 1231 if ((fcnp->cn_flags & SAVESTART) == 0) 1232 panic("ufs_rename: lost from startdir"); 1233 VREF(fdvp); 1234 error = relookup(fdvp, &fvp, fcnp); 1235 if (error == 0) 1236 vrele(fdvp); 1237 if (fvp != NULL) { 1238 xp = VTOI(fvp); 1239 dp = VTOI(fdvp); 1240 } else { 1241 /* 1242 * From name has disappeared. IN_RENAME is not sufficient 1243 * to protect against directory races due to timing windows, 1244 * so we have to remove the panic. XXX the only real way 1245 * to solve this issue is at a much higher level. By the 1246 * time we hit ufs_rename() it's too late. 1247 */ 1248#if 0 1249 if (doingdirectory) 1250 panic("ufs_rename: lost dir entry"); 1251#endif 1252 vrele(ap->a_fvp); 1253 return (0); 1254 } 1255 /* 1256 * Ensure that the directory entry still exists and has not 1257 * changed while the new name has been entered. If the source is 1258 * a file then the entry may have been unlinked or renamed. In 1259 * either case there is no further work to be done. If the source 1260 * is a directory then it cannot have been rmdir'ed; the IN_RENAME 1261 * flag ensures that it cannot be moved by another rename or removed 1262 * by a rmdir. 1263 */ 1264 if (xp != ip) { 1265 /* 1266 * From name resolves to a different inode. IN_RENAME is 1267 * not sufficient protection against timing window races 1268 * so we can't panic here. XXX the only real way 1269 * to solve this issue is at a much higher level. By the 1270 * time we hit ufs_rename() it's too late. 1271 */ 1272#if 0 1273 if (doingdirectory) 1274 panic("ufs_rename: lost dir entry"); 1275#endif 1276 } else { 1277 /* 1278 * If the source is a directory with a 1279 * new parent, the link count of the old 1280 * parent directory must be decremented 1281 * and ".." set to point to the new parent. 1282 */ 1283 if (doingdirectory && newparent) { 1284 xp->i_offset = mastertemplate.dot_reclen; 1285 ufs_dirrewrite(xp, dp, newparent, DT_DIR, 0); 1286 cache_purge(fdvp); 1287 } 1288 error = ufs_dirremove(fdvp, xp, fcnp->cn_flags, 0); 1289 xp->i_flag &= ~IN_RENAME; 1290 } 1291 VN_KNOTE_UNLOCKED(fvp, NOTE_RENAME); 1292 if (dp) 1293 vput(fdvp); 1294 if (xp) 1295 vput(fvp); 1296 vrele(ap->a_fvp); 1297 return (error); 1298 1299bad: 1300 if (xp) 1301 vput(ITOV(xp)); 1302 vput(ITOV(dp)); 1303out: 1304 if (doingdirectory) 1305 ip->i_flag &= ~IN_RENAME; 1306 if (vn_lock(fvp, LK_EXCLUSIVE, td) == 0) { 1307 ip->i_effnlink--; 1308 ip->i_nlink--; 1309 DIP_SET(ip, i_nlink, ip->i_nlink); 1310 ip->i_flag |= IN_CHANGE; 1311 ip->i_flag &= ~IN_RENAME; 1312 if (DOINGSOFTDEP(fvp)) 1313 softdep_change_linkcnt(ip); 1314 vput(fvp); 1315 } else 1316 vrele(fvp); 1317 return (error); 1318} 1319 1320/* 1321 * Mkdir system call 1322 */ 1323static int 1324ufs_mkdir(ap) 1325 struct vop_mkdir_args /* { 1326 struct vnode *a_dvp; 1327 struct vnode **a_vpp; 1328 struct componentname *a_cnp; 1329 struct vattr *a_vap; 1330 } */ *ap; 1331{ 1332 struct vnode *dvp = ap->a_dvp; 1333 struct vattr *vap = ap->a_vap; 1334 struct componentname *cnp = ap->a_cnp; 1335 struct inode *ip, *dp; 1336 struct vnode *tvp; 1337 struct buf *bp; 1338 struct dirtemplate dirtemplate, *dtp; 1339 struct direct newdir; 1340#ifdef UFS_ACL 1341 struct acl *acl, *dacl; 1342#endif 1343 int error, dmode; 1344 long blkoff; 1345 1346#ifdef DIAGNOSTIC 1347 if ((cnp->cn_flags & HASBUF) == 0) 1348 panic("ufs_mkdir: no name"); 1349#endif 1350 dp = VTOI(dvp); 1351 if ((nlink_t)dp->i_nlink >= LINK_MAX) { 1352 error = EMLINK; 1353 goto out; 1354 } 1355 dmode = vap->va_mode & 0777; 1356 dmode |= IFDIR; 1357 /* 1358 * Must simulate part of ufs_makeinode here to acquire the inode, 1359 * but not have it entered in the parent directory. The entry is 1360 * made later after writing "." and ".." entries. 1361 */ 1362 error = UFS_VALLOC(dvp, dmode, cnp->cn_cred, &tvp); 1363 if (error) 1364 goto out; 1365 ip = VTOI(tvp); 1366 ip->i_gid = dp->i_gid; 1367 DIP_SET(ip, i_gid, dp->i_gid); 1368#ifdef SUIDDIR 1369 { 1370#ifdef QUOTA 1371 struct ucred ucred, *ucp; 1372 ucp = cnp->cn_cred; 1373#endif 1374 /* 1375 * If we are hacking owners here, (only do this where told to) 1376 * and we are not giving it TO root, (would subvert quotas) 1377 * then go ahead and give it to the other user. 1378 * The new directory also inherits the SUID bit. 1379 * If user's UID and dir UID are the same, 1380 * 'give it away' so that the SUID is still forced on. 1381 */ 1382 if ((dvp->v_mount->mnt_flag & MNT_SUIDDIR) && 1383 (dp->i_mode & ISUID) && dp->i_uid) { 1384 dmode |= ISUID; 1385 ip->i_uid = dp->i_uid; 1386 DIP_SET(ip, i_uid, dp->i_uid); 1387#ifdef QUOTA 1388 if (dp->i_uid != cnp->cn_cred->cr_uid) { 1389 /* 1390 * Make sure the correct user gets charged 1391 * for the space. 1392 * Make a dummy credential for the victim. 1393 * XXX This seems to never be accessed out of 1394 * our context so a stack variable is ok. 1395 */ 1396 ucred.cr_ref = 1; 1397 ucred.cr_uid = ip->i_uid; 1398 ucred.cr_ngroups = 1; 1399 ucred.cr_groups[0] = dp->i_gid; 1400 ucp = &ucred; 1401 } 1402#endif 1403 } else { 1404 ip->i_uid = cnp->cn_cred->cr_uid; 1405 DIP_SET(ip, i_uid, ip->i_uid); 1406 } 1407#ifdef QUOTA 1408 if ((error = getinoquota(ip)) || 1409 (error = chkiq(ip, 1, ucp, 0))) { 1410 UFS_VFREE(tvp, ip->i_number, dmode); 1411 vput(tvp); 1412 return (error); 1413 } 1414#endif 1415 } 1416#else /* !SUIDDIR */ 1417 ip->i_uid = cnp->cn_cred->cr_uid; 1418 DIP_SET(ip, i_uid, ip->i_uid); 1419#ifdef QUOTA 1420 if ((error = getinoquota(ip)) || 1421 (error = chkiq(ip, 1, cnp->cn_cred, 0))) { 1422 UFS_VFREE(tvp, ip->i_number, dmode); 1423 vput(tvp); 1424 return (error); 1425 } 1426#endif 1427#endif /* !SUIDDIR */ 1428 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 1429#ifdef UFS_ACL 1430 acl = dacl = NULL; 1431 if ((dvp->v_mount->mnt_flag & MNT_ACLS) != 0) { 1432 MALLOC(acl, struct acl *, sizeof(*acl), M_ACL, M_WAITOK); 1433 MALLOC(dacl, struct acl *, sizeof(*dacl), M_ACL, M_WAITOK); 1434 1435 /* 1436 * Retrieve default ACL from parent, if any. 1437 */ 1438 error = VOP_GETACL(dvp, ACL_TYPE_DEFAULT, acl, cnp->cn_cred, 1439 cnp->cn_thread); 1440 switch (error) { 1441 case 0: 1442 /* 1443 * Retrieved a default ACL, so merge mode and ACL if 1444 * necessary. If the ACL is empty, fall through to 1445 * the "not defined or available" case. 1446 */ 1447 if (acl->acl_cnt != 0) { 1448 dmode = acl_posix1e_newfilemode(dmode, acl); 1449 ip->i_mode = dmode; 1450 DIP_SET(ip, i_mode, dmode); 1451 *dacl = *acl; 1452 ufs_sync_acl_from_inode(ip, acl); 1453 break; 1454 } 1455 /* FALLTHROUGH */ 1456 1457 case EOPNOTSUPP: 1458 /* 1459 * Just use the mode as-is. 1460 */ 1461 ip->i_mode = dmode; 1462 DIP_SET(ip, i_mode, dmode); 1463 FREE(acl, M_ACL); 1464 FREE(dacl, M_ACL); 1465 dacl = acl = NULL; 1466 break; 1467 1468 default: 1469 UFS_VFREE(tvp, ip->i_number, dmode); 1470 vput(tvp); 1471 FREE(acl, M_ACL); 1472 FREE(dacl, M_ACL); 1473 return (error); 1474 } 1475 } else { 1476#endif /* !UFS_ACL */ 1477 ip->i_mode = dmode; 1478 DIP_SET(ip, i_mode, dmode); 1479#ifdef UFS_ACL 1480 } 1481#endif 1482 tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */ 1483 ip->i_effnlink = 2; 1484 ip->i_nlink = 2; 1485 DIP_SET(ip, i_nlink, 2); 1486 if (DOINGSOFTDEP(tvp)) 1487 softdep_change_linkcnt(ip); 1488 if (cnp->cn_flags & ISWHITEOUT) { 1489 ip->i_flags |= UF_OPAQUE; 1490 DIP_SET(ip, i_flags, ip->i_flags); 1491 } 1492 1493 /* 1494 * Bump link count in parent directory to reflect work done below. 1495 * Should be done before reference is created so cleanup is 1496 * possible if we crash. 1497 */ 1498 dp->i_effnlink++; 1499 dp->i_nlink++; 1500 DIP_SET(dp, i_nlink, dp->i_nlink); 1501 dp->i_flag |= IN_CHANGE; 1502 if (DOINGSOFTDEP(dvp)) 1503 softdep_change_linkcnt(dp); 1504 error = UFS_UPDATE(tvp, !(DOINGSOFTDEP(dvp) | DOINGASYNC(dvp))); 1505 if (error) 1506 goto bad; 1507#ifdef MAC 1508 if (dvp->v_mount->mnt_flag & MNT_MULTILABEL) { 1509 error = mac_create_vnode_extattr(cnp->cn_cred, dvp->v_mount, 1510 dvp, tvp, cnp); 1511 if (error) 1512 goto bad; 1513 } 1514#endif 1515#ifdef UFS_ACL 1516 if (acl != NULL) { 1517 /* 1518 * XXX: If we abort now, will Soft Updates notify the extattr 1519 * code that the EAs for the file need to be released? 1520 */ 1521 error = VOP_SETACL(tvp, ACL_TYPE_ACCESS, acl, cnp->cn_cred, 1522 cnp->cn_thread); 1523 if (error == 0) 1524 error = VOP_SETACL(tvp, ACL_TYPE_DEFAULT, dacl, 1525 cnp->cn_cred, cnp->cn_thread); 1526 switch (error) { 1527 case 0: 1528 break; 1529 1530 case EOPNOTSUPP: 1531 /* 1532 * XXX: This should not happen, as EOPNOTSUPP above 1533 * was supposed to free acl. 1534 */ 1535 printf("ufs_mkdir: VOP_GETACL() but no VOP_SETACL()\n"); 1536 /* 1537 panic("ufs_mkdir: VOP_GETACL() but no VOP_SETACL()"); 1538 */ 1539 break; 1540 1541 default: 1542 FREE(acl, M_ACL); 1543 FREE(dacl, M_ACL); 1544 goto bad; 1545 } 1546 FREE(acl, M_ACL); 1547 FREE(dacl, M_ACL); 1548 } 1549#endif /* !UFS_ACL */ 1550 1551 /* 1552 * Initialize directory with "." and ".." from static template. 1553 */ 1554 if (dvp->v_mount->mnt_maxsymlinklen > 0 1555 ) 1556 dtp = &mastertemplate; 1557 else 1558 dtp = (struct dirtemplate *)&omastertemplate; 1559 dirtemplate = *dtp; 1560 dirtemplate.dot_ino = ip->i_number; 1561 dirtemplate.dotdot_ino = dp->i_number; 1562 if ((error = UFS_BALLOC(tvp, (off_t)0, DIRBLKSIZ, cnp->cn_cred, 1563 BA_CLRBUF, &bp)) != 0) 1564 goto bad; 1565 ip->i_size = DIRBLKSIZ; 1566 DIP_SET(ip, i_size, DIRBLKSIZ); 1567 ip->i_flag |= IN_CHANGE | IN_UPDATE; 1568 vnode_pager_setsize(tvp, (u_long)ip->i_size); 1569 bcopy((caddr_t)&dirtemplate, (caddr_t)bp->b_data, sizeof dirtemplate); 1570 if (DOINGSOFTDEP(tvp)) { 1571 /* 1572 * Ensure that the entire newly allocated block is a 1573 * valid directory so that future growth within the 1574 * block does not have to ensure that the block is 1575 * written before the inode. 1576 */ 1577 blkoff = DIRBLKSIZ; 1578 while (blkoff < bp->b_bcount) { 1579 ((struct direct *) 1580 (bp->b_data + blkoff))->d_reclen = DIRBLKSIZ; 1581 blkoff += DIRBLKSIZ; 1582 } 1583 } 1584 if ((error = UFS_UPDATE(tvp, !(DOINGSOFTDEP(tvp) | 1585 DOINGASYNC(tvp)))) != 0) { 1586 (void)bwrite(bp); 1587 goto bad; 1588 } 1589 /* 1590 * Directory set up, now install its entry in the parent directory. 1591 * 1592 * If we are not doing soft dependencies, then we must write out the 1593 * buffer containing the new directory body before entering the new 1594 * name in the parent. If we are doing soft dependencies, then the 1595 * buffer containing the new directory body will be passed to and 1596 * released in the soft dependency code after the code has attached 1597 * an appropriate ordering dependency to the buffer which ensures that 1598 * the buffer is written before the new name is written in the parent. 1599 */ 1600 if (DOINGASYNC(dvp)) 1601 bdwrite(bp); 1602 else if (!DOINGSOFTDEP(dvp) && ((error = bwrite(bp)))) 1603 goto bad; 1604 ufs_makedirentry(ip, cnp, &newdir); 1605 error = ufs_direnter(dvp, tvp, &newdir, cnp, bp); 1606 1607bad: 1608 if (error == 0) { 1609 VN_KNOTE_UNLOCKED(dvp, NOTE_WRITE | NOTE_LINK); 1610 *ap->a_vpp = tvp; 1611 } else { 1612 dp->i_effnlink--; 1613 dp->i_nlink--; 1614 DIP_SET(dp, i_nlink, dp->i_nlink); 1615 dp->i_flag |= IN_CHANGE; 1616 if (DOINGSOFTDEP(dvp)) 1617 softdep_change_linkcnt(dp); 1618 /* 1619 * No need to do an explicit VOP_TRUNCATE here, vrele will 1620 * do this for us because we set the link count to 0. 1621 */ 1622 ip->i_effnlink = 0; 1623 ip->i_nlink = 0; 1624 DIP_SET(ip, i_nlink, 0); 1625 ip->i_flag |= IN_CHANGE; 1626 if (DOINGSOFTDEP(tvp)) 1627 softdep_change_linkcnt(ip); 1628 vput(tvp); 1629 } 1630out: 1631 return (error); 1632} 1633 1634/* 1635 * Rmdir system call. 1636 */ 1637static int 1638ufs_rmdir(ap) 1639 struct vop_rmdir_args /* { 1640 struct vnode *a_dvp; 1641 struct vnode *a_vp; 1642 struct componentname *a_cnp; 1643 } */ *ap; 1644{ 1645 struct vnode *vp = ap->a_vp; 1646 struct vnode *dvp = ap->a_dvp; 1647 struct componentname *cnp = ap->a_cnp; 1648 struct inode *ip, *dp; 1649 int error, ioflag; 1650 1651 ip = VTOI(vp); 1652 dp = VTOI(dvp); 1653 1654 /* 1655 * Do not remove a directory that is in the process of being renamed. 1656 * Verify the directory is empty (and valid). Rmdir ".." will not be 1657 * valid since ".." will contain a reference to the current directory 1658 * and thus be non-empty. Do not allow the removal of mounted on 1659 * directories (this can happen when an NFS exported filesystem 1660 * tries to remove a locally mounted on directory). 1661 */ 1662 error = 0; 1663 if (ip->i_flag & IN_RENAME) { 1664 error = EINVAL; 1665 goto out; 1666 } 1667 if (ip->i_effnlink != 2 || 1668 !ufs_dirempty(ip, dp->i_number, cnp->cn_cred)) { 1669 error = ENOTEMPTY; 1670 goto out; 1671 } 1672 if ((dp->i_flags & APPEND) 1673 || (ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))) { 1674 error = EPERM; 1675 goto out; 1676 } 1677 if (vp->v_mountedhere != 0) { 1678 error = EINVAL; 1679 goto out; 1680 } 1681 /* 1682 * Delete reference to directory before purging 1683 * inode. If we crash in between, the directory 1684 * will be reattached to lost+found, 1685 */ 1686 dp->i_effnlink--; 1687 ip->i_effnlink--; 1688 if (DOINGSOFTDEP(vp)) { 1689 softdep_change_linkcnt(dp); 1690 softdep_change_linkcnt(ip); 1691 } 1692 error = ufs_dirremove(dvp, ip, cnp->cn_flags, 1); 1693 if (error) { 1694 dp->i_effnlink++; 1695 ip->i_effnlink++; 1696 if (DOINGSOFTDEP(vp)) { 1697 softdep_change_linkcnt(dp); 1698 softdep_change_linkcnt(ip); 1699 } 1700 goto out; 1701 } 1702 VN_KNOTE_UNLOCKED(dvp, NOTE_WRITE | NOTE_LINK); 1703 cache_purge(dvp); 1704 /* 1705 * Truncate inode. The only stuff left in the directory is "." and 1706 * "..". The "." reference is inconsequential since we are quashing 1707 * it. The soft dependency code will arrange to do these operations 1708 * after the parent directory entry has been deleted on disk, so 1709 * when running with that code we avoid doing them now. 1710 */ 1711 if (!DOINGSOFTDEP(vp)) { 1712 dp->i_nlink--; 1713 DIP_SET(dp, i_nlink, dp->i_nlink); 1714 dp->i_flag |= IN_CHANGE; 1715 ip->i_nlink--; 1716 DIP_SET(ip, i_nlink, ip->i_nlink); 1717 ip->i_flag |= IN_CHANGE; 1718 ioflag = IO_NORMAL; 1719 if (DOINGASYNC(vp)) 1720 ioflag |= IO_SYNC; 1721 error = UFS_TRUNCATE(vp, (off_t)0, ioflag, cnp->cn_cred, 1722 cnp->cn_thread); 1723 } 1724 cache_purge(vp); 1725#ifdef UFS_DIRHASH 1726 /* Kill any active hash; i_effnlink == 0, so it will not come back. */ 1727 if (ip->i_dirhash != NULL) 1728 ufsdirhash_free(ip); 1729#endif 1730out: 1731 VN_KNOTE_UNLOCKED(vp, NOTE_DELETE); 1732 return (error); 1733} 1734 1735/* 1736 * symlink -- make a symbolic link 1737 */ 1738static int 1739ufs_symlink(ap) 1740 struct vop_symlink_args /* { 1741 struct vnode *a_dvp; 1742 struct vnode **a_vpp; 1743 struct componentname *a_cnp; 1744 struct vattr *a_vap; 1745 char *a_target; 1746 } */ *ap; 1747{ 1748 struct vnode *vp, **vpp = ap->a_vpp; 1749 struct inode *ip; 1750 int len, error; 1751 1752 error = ufs_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp, 1753 vpp, ap->a_cnp); 1754 if (error) 1755 return (error); 1756 VN_KNOTE_UNLOCKED(ap->a_dvp, NOTE_WRITE); 1757 vp = *vpp; 1758 len = strlen(ap->a_target); 1759 if (len < vp->v_mount->mnt_maxsymlinklen) { 1760 ip = VTOI(vp); 1761 bcopy(ap->a_target, SHORTLINK(ip), len); 1762 ip->i_size = len; 1763 DIP_SET(ip, i_size, len); 1764 ip->i_flag |= IN_CHANGE | IN_UPDATE; 1765 } else 1766 error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0, 1767 UIO_SYSSPACE, IO_NODELOCKED | IO_NOMACCHECK, 1768 ap->a_cnp->cn_cred, NOCRED, (int *)0, (struct thread *)0); 1769 if (error) 1770 vput(vp); 1771 return (error); 1772} 1773 1774/* 1775 * Vnode op for reading directories. 1776 * 1777 * The routine below assumes that the on-disk format of a directory 1778 * is the same as that defined by <sys/dirent.h>. If the on-disk 1779 * format changes, then it will be necessary to do a conversion 1780 * from the on-disk format that read returns to the format defined 1781 * by <sys/dirent.h>. 1782 */ 1783int 1784ufs_readdir(ap) 1785 struct vop_readdir_args /* { 1786 struct vnode *a_vp; 1787 struct uio *a_uio; 1788 struct ucred *a_cred; 1789 int *a_eofflag; 1790 int *ncookies; 1791 u_long **a_cookies; 1792 } */ *ap; 1793{ 1794 struct uio *uio = ap->a_uio; 1795 int error; 1796 size_t count, lost; 1797 off_t off; 1798 1799 if (ap->a_ncookies != NULL) 1800 /* 1801 * Ensure that the block is aligned. The caller can use 1802 * the cookies to determine where in the block to start. 1803 */ 1804 uio->uio_offset &= ~(DIRBLKSIZ - 1); 1805 off = uio->uio_offset; 1806 count = uio->uio_resid; 1807 /* Make sure we don't return partial entries. */ 1808 if (count <= ((uio->uio_offset + count) & (DIRBLKSIZ -1))) 1809 return (EINVAL); 1810 count -= (uio->uio_offset + count) & (DIRBLKSIZ -1); 1811 lost = uio->uio_resid - count; 1812 uio->uio_resid = count; 1813 uio->uio_iov->iov_len = count; 1814# if (BYTE_ORDER == LITTLE_ENDIAN) 1815 if (ap->a_vp->v_mount->mnt_maxsymlinklen > 0) { 1816 error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred); 1817 } else { 1818 struct dirent *dp, *edp; 1819 struct uio auio; 1820 struct iovec aiov; 1821 caddr_t dirbuf; 1822 int readcnt; 1823 u_char tmp; 1824 1825 auio = *uio; 1826 auio.uio_iov = &aiov; 1827 auio.uio_iovcnt = 1; 1828 auio.uio_segflg = UIO_SYSSPACE; 1829 aiov.iov_len = count; 1830 MALLOC(dirbuf, caddr_t, count, M_TEMP, M_WAITOK); 1831 aiov.iov_base = dirbuf; 1832 error = VOP_READ(ap->a_vp, &auio, 0, ap->a_cred); 1833 if (error == 0) { 1834 readcnt = count - auio.uio_resid; 1835 edp = (struct dirent *)&dirbuf[readcnt]; 1836 for (dp = (struct dirent *)dirbuf; dp < edp; ) { 1837 tmp = dp->d_namlen; 1838 dp->d_namlen = dp->d_type; 1839 dp->d_type = tmp; 1840 if (dp->d_reclen > 0) { 1841 dp = (struct dirent *) 1842 ((char *)dp + dp->d_reclen); 1843 } else { 1844 error = EIO; 1845 break; 1846 } 1847 } 1848 if (dp >= edp) 1849 error = uiomove(dirbuf, readcnt, uio); 1850 } 1851 FREE(dirbuf, M_TEMP); 1852 } 1853# else 1854 error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred); 1855# endif 1856 if (!error && ap->a_ncookies != NULL) { 1857 struct dirent* dpStart; 1858 struct dirent* dpEnd; 1859 struct dirent* dp; 1860 int ncookies; 1861 u_long *cookies; 1862 u_long *cookiep; 1863 1864 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 1865 panic("ufs_readdir: unexpected uio from NFS server"); 1866 dpStart = (struct dirent *) 1867 ((char *)uio->uio_iov->iov_base - (uio->uio_offset - off)); 1868 dpEnd = (struct dirent *) uio->uio_iov->iov_base; 1869 for (dp = dpStart, ncookies = 0; 1870 dp < dpEnd; 1871 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen)) 1872 ncookies++; 1873 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), M_TEMP, 1874 M_WAITOK); 1875 for (dp = dpStart, cookiep = cookies; 1876 dp < dpEnd; 1877 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen)) { 1878 off += dp->d_reclen; 1879 *cookiep++ = (u_long) off; 1880 } 1881 *ap->a_ncookies = ncookies; 1882 *ap->a_cookies = cookies; 1883 } 1884 uio->uio_resid += lost; 1885 if (ap->a_eofflag) 1886 *ap->a_eofflag = VTOI(ap->a_vp)->i_size <= uio->uio_offset; 1887 return (error); 1888} 1889 1890/* 1891 * Return target name of a symbolic link 1892 */ 1893static int 1894ufs_readlink(ap) 1895 struct vop_readlink_args /* { 1896 struct vnode *a_vp; 1897 struct uio *a_uio; 1898 struct ucred *a_cred; 1899 } */ *ap; 1900{ 1901 struct vnode *vp = ap->a_vp; 1902 struct inode *ip = VTOI(vp); 1903 doff_t isize; 1904 1905 isize = ip->i_size; 1906 if ((isize < vp->v_mount->mnt_maxsymlinklen) || 1907 DIP(ip, i_blocks) == 0) { /* XXX - for old fastlink support */ 1908 uiomove(SHORTLINK(ip), isize, ap->a_uio); 1909 return (0); 1910 } 1911 return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred)); 1912} 1913 1914/* 1915 * Calculate the logical to physical mapping if not done already, 1916 * then call the device strategy routine. 1917 * 1918 * In order to be able to swap to a file, the ufs_bmaparray() operation may not 1919 * deadlock on memory. See ufs_bmap() for details. 1920 */ 1921static int 1922ufs_strategy(ap) 1923 struct vop_strategy_args /* { 1924 struct vnode *a_vp; 1925 struct buf *a_bp; 1926 } */ *ap; 1927{ 1928 struct buf *bp = ap->a_bp; 1929 struct vnode *vp = ap->a_vp; 1930 struct bufobj *bo; 1931 struct inode *ip; 1932 ufs2_daddr_t blkno; 1933 int error; 1934 1935 ip = VTOI(vp); 1936 if (bp->b_blkno == bp->b_lblkno) { 1937 error = ufs_bmaparray(vp, bp->b_lblkno, &blkno, bp, NULL, NULL); 1938 bp->b_blkno = blkno; 1939 if (error) { 1940 bp->b_error = error; 1941 bp->b_ioflags |= BIO_ERROR; 1942 bufdone(bp); 1943 return (error); 1944 } 1945 if ((long)bp->b_blkno == -1) 1946 vfs_bio_clrbuf(bp); 1947 } 1948 if ((long)bp->b_blkno == -1) { 1949 bufdone(bp); 1950 return (0); 1951 } 1952 bp->b_iooffset = dbtob(bp->b_blkno); 1953 bo = ip->i_umbufobj; 1954 bo->bo_ops->bop_strategy(bo, bp); 1955 return (0); 1956} 1957 1958/* 1959 * Snapshots require all lock requests to be exclusive. 1960 */ 1961static int 1962ufs_lock(ap) 1963 struct vop_lock_args /* { 1964 struct vnode *a_vp; 1965 int a_flags; 1966 struct thread *a_td; 1967 } */ *ap; 1968{ 1969 struct vnode *vp = ap->a_vp; 1970 int flags = ap->a_flags; 1971 1972 if ((VTOI(vp)->i_flags & SF_SNAPSHOT) && 1973 ((flags & LK_TYPE_MASK) == LK_SHARED)) { 1974 flags &= ~LK_TYPE_MASK; 1975 flags |= LK_EXCLUSIVE; 1976 } 1977#ifndef DEBUG_LOCKS 1978 return (lockmgr(vp->v_vnlock, flags, VI_MTX(vp), ap->a_td)); 1979#else 1980 return (debuglockmgr(vp->v_vnlock, flags, VI_MTX(vp), 1981 ap->a_td, "vop_stdlock", vp->filename, vp->line)); 1982#endif 1983} 1984 1985/* 1986 * Print out the contents of an inode. 1987 */ 1988static int 1989ufs_print(ap) 1990 struct vop_print_args /* { 1991 struct vnode *a_vp; 1992 } */ *ap; 1993{ 1994 struct vnode *vp = ap->a_vp; 1995 struct inode *ip = VTOI(vp); 1996 1997 printf("\tino %lu, on dev %s (%d, %d)", (u_long)ip->i_number, 1998 devtoname(ip->i_dev), major(ip->i_dev), minor(ip->i_dev)); 1999 if (vp->v_type == VFIFO) 2000 fifo_printinfo(vp); 2001 printf("\n"); 2002 return (0); 2003} 2004 2005/* 2006 * Read wrapper for fifos. 2007 */ 2008static int 2009ufsfifo_read(ap) 2010 struct vop_read_args /* { 2011 struct vnode *a_vp; 2012 struct uio *a_uio; 2013 int a_ioflag; 2014 struct ucred *a_cred; 2015 } */ *ap; 2016{ 2017 int error, resid; 2018 struct inode *ip; 2019 struct uio *uio; 2020 2021 uio = ap->a_uio; 2022 resid = uio->uio_resid; 2023 error = VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), ap); 2024 ip = VTOI(ap->a_vp); 2025 if ((ap->a_vp->v_mount->mnt_flag & MNT_NOATIME) == 0 && ip != NULL && 2026 (uio->uio_resid != resid || (error == 0 && resid != 0))) 2027 ip->i_flag |= IN_ACCESS; 2028 return (error); 2029} 2030 2031/* 2032 * Write wrapper for fifos. 2033 */ 2034static int 2035ufsfifo_write(ap) 2036 struct vop_write_args /* { 2037 struct vnode *a_vp; 2038 struct uio *a_uio; 2039 int a_ioflag; 2040 struct ucred *a_cred; 2041 } */ *ap; 2042{ 2043 int error, resid; 2044 struct inode *ip; 2045 struct uio *uio; 2046 2047 uio = ap->a_uio; 2048 resid = uio->uio_resid; 2049 error = VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), ap); 2050 ip = VTOI(ap->a_vp); 2051 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0))) 2052 ip->i_flag |= IN_CHANGE | IN_UPDATE; 2053 return (error); 2054} 2055 2056/* 2057 * Close wrapper for fifos. 2058 * 2059 * Update the times on the inode then do device close. 2060 */ 2061static int 2062ufsfifo_close(ap) 2063 struct vop_close_args /* { 2064 struct vnode *a_vp; 2065 int a_fflag; 2066 struct ucred *a_cred; 2067 struct thread *a_td; 2068 } */ *ap; 2069{ 2070 struct vnode *vp = ap->a_vp; 2071 2072 VI_LOCK(vp); 2073 if (vp->v_usecount > 1) 2074 ufs_itimes(vp); 2075 VI_UNLOCK(vp); 2076 return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), ap)); 2077} 2078 2079/* 2080 * Kqfilter wrapper for fifos. 2081 * 2082 * Fall through to ufs kqfilter routines if needed 2083 */ 2084static int 2085ufsfifo_kqfilter(ap) 2086 struct vop_kqfilter_args *ap; 2087{ 2088 int error; 2089 2090 error = VOCALL(fifo_vnodeop_p, VOFFSET(vop_kqfilter), ap); 2091 if (error) 2092 error = ufs_kqfilter(ap); 2093 return (error); 2094} 2095 2096/* 2097 * Return POSIX pathconf information applicable to ufs filesystems. 2098 */ 2099static int 2100ufs_pathconf(ap) 2101 struct vop_pathconf_args /* { 2102 struct vnode *a_vp; 2103 int a_name; 2104 int *a_retval; 2105 } */ *ap; 2106{ 2107 int error; 2108 2109 error = 0; 2110 switch (ap->a_name) { 2111 case _PC_LINK_MAX: 2112 *ap->a_retval = LINK_MAX; 2113 break; 2114 case _PC_NAME_MAX: 2115 *ap->a_retval = NAME_MAX; 2116 break; 2117 case _PC_PATH_MAX: 2118 *ap->a_retval = PATH_MAX; 2119 break; 2120 case _PC_PIPE_BUF: 2121 *ap->a_retval = PIPE_BUF; 2122 break; 2123 case _PC_CHOWN_RESTRICTED: 2124 *ap->a_retval = 1; 2125 break; 2126 case _PC_NO_TRUNC: 2127 *ap->a_retval = 1; 2128 break; 2129 case _PC_ACL_EXTENDED: 2130#ifdef UFS_ACL 2131 if (ap->a_vp->v_mount->mnt_flag & MNT_ACLS) 2132 *ap->a_retval = 1; 2133 else 2134 *ap->a_retval = 0; 2135#else 2136 *ap->a_retval = 0; 2137#endif 2138 break; 2139 case _PC_ACL_PATH_MAX: 2140#ifdef UFS_ACL 2141 if (ap->a_vp->v_mount->mnt_flag & MNT_ACLS) 2142 *ap->a_retval = ACL_MAX_ENTRIES; 2143 else 2144 *ap->a_retval = 3; 2145#else 2146 *ap->a_retval = 3; 2147#endif 2148 break; 2149 case _PC_MAC_PRESENT: 2150#ifdef MAC 2151 if (ap->a_vp->v_mount->mnt_flag & MNT_MULTILABEL) 2152 *ap->a_retval = 1; 2153 else 2154 *ap->a_retval = 0; 2155#else 2156 *ap->a_retval = 0; 2157#endif 2158 break; 2159 case _PC_ASYNC_IO: 2160 /* _PC_ASYNC_IO should have been handled by upper layers. */ 2161 KASSERT(0, ("_PC_ASYNC_IO should not get here")); 2162 error = EINVAL; 2163 break; 2164 case _PC_PRIO_IO: 2165 *ap->a_retval = 0; 2166 break; 2167 case _PC_SYNC_IO: 2168 *ap->a_retval = 0; 2169 break; 2170 case _PC_ALLOC_SIZE_MIN: 2171 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_bsize; 2172 break; 2173 case _PC_FILESIZEBITS: 2174 *ap->a_retval = 64; 2175 break; 2176 case _PC_REC_INCR_XFER_SIZE: 2177 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize; 2178 break; 2179 case _PC_REC_MAX_XFER_SIZE: 2180 *ap->a_retval = -1; /* means ``unlimited'' */ 2181 break; 2182 case _PC_REC_MIN_XFER_SIZE: 2183 *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize; 2184 break; 2185 case _PC_REC_XFER_ALIGN: 2186 *ap->a_retval = PAGE_SIZE; 2187 break; 2188 case _PC_SYMLINK_MAX: 2189 *ap->a_retval = MAXPATHLEN; 2190 break; 2191 2192 default: 2193 error = EINVAL; 2194 break; 2195 } 2196 return (error); 2197} 2198 2199/* 2200 * Advisory record locking support 2201 */ 2202static int 2203ufs_advlock(ap) 2204 struct vop_advlock_args /* { 2205 struct vnode *a_vp; 2206 caddr_t a_id; 2207 int a_op; 2208 struct flock *a_fl; 2209 int a_flags; 2210 } */ *ap; 2211{ 2212 struct inode *ip = VTOI(ap->a_vp); 2213 2214 return (lf_advlock(ap, &(ip->i_lockf), ip->i_size)); 2215} 2216 2217/* 2218 * Initialize the vnode associated with a new inode, handle aliased 2219 * vnodes. 2220 */ 2221int 2222ufs_vinit(mntp, fifoops, vpp) 2223 struct mount *mntp; 2224 vop_t **fifoops; 2225 struct vnode **vpp; 2226{ 2227 struct inode *ip; 2228 struct vnode *vp; 2229 2230 vp = *vpp; 2231 ip = VTOI(vp); 2232 vp->v_type = IFTOVT(ip->i_mode); 2233 if (vp->v_type == VFIFO) 2234 vp->v_op = fifoops; 2235 ASSERT_VOP_LOCKED(vp, "ufs_vinit"); 2236 if (ip->i_number == ROOTINO) 2237 vp->v_vflag |= VV_ROOT; 2238 ip->i_modrev = init_va_filerev(); 2239 *vpp = vp; 2240 return (0); 2241} 2242 2243/* 2244 * Allocate a new inode. 2245 * Vnode dvp must be locked. 2246 */ 2247static int 2248ufs_makeinode(mode, dvp, vpp, cnp) 2249 int mode; 2250 struct vnode *dvp; 2251 struct vnode **vpp; 2252 struct componentname *cnp; 2253{ 2254 struct inode *ip, *pdir; 2255 struct direct newdir; 2256 struct vnode *tvp; 2257#ifdef UFS_ACL 2258 struct acl *acl; 2259#endif 2260 int error; 2261 2262 pdir = VTOI(dvp); 2263#ifdef DIAGNOSTIC 2264 if ((cnp->cn_flags & HASBUF) == 0) 2265 panic("ufs_makeinode: no name"); 2266#endif 2267 *vpp = NULL; 2268 if ((mode & IFMT) == 0) 2269 mode |= IFREG; 2270 2271 error = UFS_VALLOC(dvp, mode, cnp->cn_cred, &tvp); 2272 if (error) 2273 return (error); 2274 ip = VTOI(tvp); 2275 ip->i_gid = pdir->i_gid; 2276 DIP_SET(ip, i_gid, pdir->i_gid); 2277#ifdef SUIDDIR 2278 { 2279#ifdef QUOTA 2280 struct ucred ucred, *ucp; 2281 ucp = cnp->cn_cred; 2282#endif 2283 /* 2284 * If we are not the owner of the directory, 2285 * and we are hacking owners here, (only do this where told to) 2286 * and we are not giving it TO root, (would subvert quotas) 2287 * then go ahead and give it to the other user. 2288 * Note that this drops off the execute bits for security. 2289 */ 2290 if ((dvp->v_mount->mnt_flag & MNT_SUIDDIR) && 2291 (pdir->i_mode & ISUID) && 2292 (pdir->i_uid != cnp->cn_cred->cr_uid) && pdir->i_uid) { 2293 ip->i_uid = pdir->i_uid; 2294 DIP_SET(ip, i_uid, ip->i_uid); 2295 mode &= ~07111; 2296#ifdef QUOTA 2297 /* 2298 * Make sure the correct user gets charged 2299 * for the space. 2300 * Quickly knock up a dummy credential for the victim. 2301 * XXX This seems to never be accessed out of our 2302 * context so a stack variable is ok. 2303 */ 2304 ucred.cr_ref = 1; 2305 ucred.cr_uid = ip->i_uid; 2306 ucred.cr_ngroups = 1; 2307 ucred.cr_groups[0] = pdir->i_gid; 2308 ucp = &ucred; 2309#endif 2310 } else { 2311 ip->i_uid = cnp->cn_cred->cr_uid; 2312 DIP_SET(ip, i_uid, ip->i_uid); 2313 } 2314 2315#ifdef QUOTA 2316 if ((error = getinoquota(ip)) || 2317 (error = chkiq(ip, 1, ucp, 0))) { 2318 UFS_VFREE(tvp, ip->i_number, mode); 2319 vput(tvp); 2320 return (error); 2321 } 2322#endif 2323 } 2324#else /* !SUIDDIR */ 2325 ip->i_uid = cnp->cn_cred->cr_uid; 2326 DIP_SET(ip, i_uid, ip->i_uid); 2327#ifdef QUOTA 2328 if ((error = getinoquota(ip)) || 2329 (error = chkiq(ip, 1, cnp->cn_cred, 0))) { 2330 UFS_VFREE(tvp, ip->i_number, mode); 2331 vput(tvp); 2332 return (error); 2333 } 2334#endif 2335#endif /* !SUIDDIR */ 2336 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE; 2337#ifdef UFS_ACL 2338 acl = NULL; 2339 if ((dvp->v_mount->mnt_flag & MNT_ACLS) != 0) { 2340 MALLOC(acl, struct acl *, sizeof(*acl), M_ACL, M_WAITOK); 2341 2342 /* 2343 * Retrieve default ACL for parent, if any. 2344 */ 2345 error = VOP_GETACL(dvp, ACL_TYPE_DEFAULT, acl, cnp->cn_cred, 2346 cnp->cn_thread); 2347 switch (error) { 2348 case 0: 2349 /* 2350 * Retrieved a default ACL, so merge mode and ACL if 2351 * necessary. 2352 */ 2353 if (acl->acl_cnt != 0) { 2354 /* 2355 * Two possible ways for default ACL to not 2356 * be present. First, the EA can be 2357 * undefined, or second, the default ACL can 2358 * be blank. If it's blank, fall through to 2359 * the it's not defined case. 2360 */ 2361 mode = acl_posix1e_newfilemode(mode, acl); 2362 ip->i_mode = mode; 2363 DIP_SET(ip, i_mode, mode); 2364 ufs_sync_acl_from_inode(ip, acl); 2365 break; 2366 } 2367 /* FALLTHROUGH */ 2368 2369 case EOPNOTSUPP: 2370 /* 2371 * Just use the mode as-is. 2372 */ 2373 ip->i_mode = mode; 2374 DIP_SET(ip, i_mode, mode); 2375 FREE(acl, M_ACL); 2376 acl = NULL; 2377 break; 2378 2379 default: 2380 UFS_VFREE(tvp, ip->i_number, mode); 2381 vput(tvp); 2382 FREE(acl, M_ACL); 2383 acl = NULL; 2384 return (error); 2385 } 2386 } else { 2387#endif 2388 ip->i_mode = mode; 2389 DIP_SET(ip, i_mode, mode); 2390#ifdef UFS_ACL 2391 } 2392#endif 2393 tvp->v_type = IFTOVT(mode); /* Rest init'd in getnewvnode(). */ 2394 ip->i_effnlink = 1; 2395 ip->i_nlink = 1; 2396 DIP_SET(ip, i_nlink, 1); 2397 if (DOINGSOFTDEP(tvp)) 2398 softdep_change_linkcnt(ip); 2399 if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) && 2400 suser_cred(cnp->cn_cred, SUSER_ALLOWJAIL)) { 2401 ip->i_mode &= ~ISGID; 2402 DIP_SET(ip, i_mode, ip->i_mode); 2403 } 2404 2405 if (cnp->cn_flags & ISWHITEOUT) { 2406 ip->i_flags |= UF_OPAQUE; 2407 DIP_SET(ip, i_flags, ip->i_flags); 2408 } 2409 2410 /* 2411 * Make sure inode goes to disk before directory entry. 2412 */ 2413 error = UFS_UPDATE(tvp, !(DOINGSOFTDEP(tvp) | DOINGASYNC(tvp))); 2414 if (error) 2415 goto bad; 2416#ifdef MAC 2417 if (dvp->v_mount->mnt_flag & MNT_MULTILABEL) { 2418 error = mac_create_vnode_extattr(cnp->cn_cred, dvp->v_mount, 2419 dvp, tvp, cnp); 2420 if (error) 2421 goto bad; 2422 } 2423#endif 2424#ifdef UFS_ACL 2425 if (acl != NULL) { 2426 /* 2427 * XXX: If we abort now, will Soft Updates notify the extattr 2428 * code that the EAs for the file need to be released? 2429 */ 2430 error = VOP_SETACL(tvp, ACL_TYPE_ACCESS, acl, cnp->cn_cred, 2431 cnp->cn_thread); 2432 switch (error) { 2433 case 0: 2434 break; 2435 2436 case EOPNOTSUPP: 2437 /* 2438 * XXX: This should not happen, as EOPNOTSUPP above was 2439 * supposed to free acl. 2440 */ 2441 printf("ufs_makeinode: VOP_GETACL() but no " 2442 "VOP_SETACL()\n"); 2443 /* panic("ufs_makeinode: VOP_GETACL() but no " 2444 "VOP_SETACL()"); */ 2445 break; 2446 2447 default: 2448 FREE(acl, M_ACL); 2449 goto bad; 2450 } 2451 FREE(acl, M_ACL); 2452 } 2453#endif /* !UFS_ACL */ 2454 ufs_makedirentry(ip, cnp, &newdir); 2455 error = ufs_direnter(dvp, tvp, &newdir, cnp, NULL); 2456 if (error) 2457 goto bad; 2458 *vpp = tvp; 2459 return (0); 2460 2461bad: 2462 /* 2463 * Write error occurred trying to update the inode 2464 * or the directory so must deallocate the inode. 2465 */ 2466 ip->i_effnlink = 0; 2467 ip->i_nlink = 0; 2468 DIP_SET(ip, i_nlink, 0); 2469 ip->i_flag |= IN_CHANGE; 2470 if (DOINGSOFTDEP(tvp)) 2471 softdep_change_linkcnt(ip); 2472 vput(tvp); 2473 return (error); 2474} 2475 2476static struct filterops ufsread_filtops = 2477 { 1, NULL, filt_ufsdetach, filt_ufsread }; 2478static struct filterops ufswrite_filtops = 2479 { 1, NULL, filt_ufsdetach, filt_ufswrite }; 2480static struct filterops ufsvnode_filtops = 2481 { 1, NULL, filt_ufsdetach, filt_ufsvnode }; 2482 2483static int 2484ufs_kqfilter(ap) 2485 struct vop_kqfilter_args /* { 2486 struct vnode *a_vp; 2487 struct knote *a_kn; 2488 } */ *ap; 2489{ 2490 struct vnode *vp = ap->a_vp; 2491 struct knote *kn = ap->a_kn; 2492 2493 switch (kn->kn_filter) { 2494 case EVFILT_READ: 2495 kn->kn_fop = &ufsread_filtops; 2496 break; 2497 case EVFILT_WRITE: 2498 kn->kn_fop = &ufswrite_filtops; 2499 break; 2500 case EVFILT_VNODE: 2501 kn->kn_fop = &ufsvnode_filtops; 2502 break; 2503 default: 2504 return (1); 2505 } 2506 2507 kn->kn_hook = (caddr_t)vp; 2508 2509 if (vp->v_pollinfo == NULL) 2510 v_addpollinfo(vp); 2511 if (vp->v_pollinfo == NULL) 2512 return ENOMEM; 2513 knlist_add(&vp->v_pollinfo->vpi_selinfo.si_note, kn, 0); 2514 2515 return (0); 2516} 2517 2518static void 2519filt_ufsdetach(struct knote *kn) 2520{ 2521 struct vnode *vp = (struct vnode *)kn->kn_hook; 2522 2523 KASSERT(vp->v_pollinfo != NULL, ("Mising v_pollinfo")); 2524 knlist_remove(&vp->v_pollinfo->vpi_selinfo.si_note, kn, 0); 2525} 2526 2527/*ARGSUSED*/ 2528static int 2529filt_ufsread(struct knote *kn, long hint) 2530{ 2531 struct vnode *vp = (struct vnode *)kn->kn_hook; 2532 struct inode *ip = VTOI(vp); 2533 2534 /* 2535 * filesystem is gone, so set the EOF flag and schedule 2536 * the knote for deletion. 2537 */ 2538 if (hint == NOTE_REVOKE) { 2539 kn->kn_flags |= (EV_EOF | EV_ONESHOT); 2540 return (1); 2541 } 2542 2543 kn->kn_data = ip->i_size - kn->kn_fp->f_offset; 2544 return (kn->kn_data != 0); 2545} 2546 2547/*ARGSUSED*/ 2548static int 2549filt_ufswrite(struct knote *kn, long hint) 2550{ 2551 2552 /* 2553 * filesystem is gone, so set the EOF flag and schedule 2554 * the knote for deletion. 2555 */ 2556 if (hint == NOTE_REVOKE) 2557 kn->kn_flags |= (EV_EOF | EV_ONESHOT); 2558 2559 kn->kn_data = 0; 2560 return (1); 2561} 2562 2563static int 2564filt_ufsvnode(struct knote *kn, long hint) 2565{ 2566 2567 if (kn->kn_sfflags & hint) 2568 kn->kn_fflags |= hint; 2569 if (hint == NOTE_REVOKE) { 2570 kn->kn_flags |= EV_EOF; 2571 return (1); 2572 } 2573 return (kn->kn_fflags != 0); 2574} 2575 2576/* Global vfs data structures for ufs. */ 2577static vop_t **ufs_vnodeop_p; 2578static struct vnodeopv_entry_desc ufs_vnodeop_entries[] = { 2579 { &vop_default_desc, (vop_t *) vop_defaultop }, 2580 { &vop_fsync_desc, (vop_t *) vop_panic }, 2581 { &vop_read_desc, (vop_t *) vop_panic }, 2582 { &vop_reallocblks_desc, (vop_t *) vop_panic }, 2583 { &vop_write_desc, (vop_t *) vop_panic }, 2584 { &vop_access_desc, (vop_t *) ufs_access }, 2585 { &vop_advlock_desc, (vop_t *) ufs_advlock }, 2586 { &vop_lock_desc, (vop_t *) ufs_lock }, 2587 { &vop_bmap_desc, (vop_t *) ufs_bmap }, 2588 { &vop_cachedlookup_desc, (vop_t *) ufs_lookup }, 2589 { &vop_close_desc, (vop_t *) ufs_close }, 2590 { &vop_create_desc, (vop_t *) ufs_create }, 2591 { &vop_getattr_desc, (vop_t *) ufs_getattr }, 2592 { &vop_inactive_desc, (vop_t *) ufs_inactive }, 2593 { &vop_link_desc, (vop_t *) ufs_link }, 2594 { &vop_lookup_desc, (vop_t *) vfs_cache_lookup }, 2595 { &vop_mkdir_desc, (vop_t *) ufs_mkdir }, 2596 { &vop_mknod_desc, (vop_t *) ufs_mknod }, 2597 { &vop_open_desc, (vop_t *) ufs_open }, 2598 { &vop_pathconf_desc, (vop_t *) ufs_pathconf }, 2599 { &vop_poll_desc, (vop_t *) vop_stdpoll }, 2600 { &vop_kqfilter_desc, (vop_t *) ufs_kqfilter }, 2601 { &vop_getwritemount_desc, (vop_t *) vop_stdgetwritemount }, 2602 { &vop_print_desc, (vop_t *) ufs_print }, 2603 { &vop_readdir_desc, (vop_t *) ufs_readdir }, 2604 { &vop_readlink_desc, (vop_t *) ufs_readlink }, 2605 { &vop_reclaim_desc, (vop_t *) ufs_reclaim }, 2606 { &vop_remove_desc, (vop_t *) ufs_remove }, 2607 { &vop_rename_desc, (vop_t *) ufs_rename }, 2608 { &vop_rmdir_desc, (vop_t *) ufs_rmdir }, 2609 { &vop_setattr_desc, (vop_t *) ufs_setattr }, 2610#ifdef MAC 2611 { &vop_setlabel_desc, (vop_t *) vop_stdsetlabel_ea }, 2612#endif 2613 { &vop_strategy_desc, (vop_t *) ufs_strategy }, 2614 { &vop_symlink_desc, (vop_t *) ufs_symlink }, 2615 { &vop_whiteout_desc, (vop_t *) ufs_whiteout }, 2616#ifdef UFS_EXTATTR 2617 { &vop_getextattr_desc, (vop_t *) ufs_getextattr }, 2618 { &vop_deleteextattr_desc, (vop_t *) ufs_deleteextattr }, 2619 { &vop_setextattr_desc, (vop_t *) ufs_setextattr }, 2620#endif 2621#ifdef UFS_ACL 2622 { &vop_getacl_desc, (vop_t *) ufs_getacl }, 2623 { &vop_setacl_desc, (vop_t *) ufs_setacl }, 2624 { &vop_aclcheck_desc, (vop_t *) ufs_aclcheck }, 2625#endif 2626 { NULL, NULL } 2627}; 2628static struct vnodeopv_desc ufs_vnodeop_opv_desc = 2629 { &ufs_vnodeop_p, ufs_vnodeop_entries }; 2630 2631static vop_t **ufs_fifoop_p; 2632static struct vnodeopv_entry_desc ufs_fifoop_entries[] = { 2633 { &vop_default_desc, (vop_t *) fifo_vnoperate }, 2634 { &vop_fsync_desc, (vop_t *) vop_panic }, 2635 { &vop_access_desc, (vop_t *) ufs_access }, 2636 { &vop_close_desc, (vop_t *) ufsfifo_close }, 2637 { &vop_getattr_desc, (vop_t *) ufs_getattr }, 2638 { &vop_inactive_desc, (vop_t *) ufs_inactive }, 2639 { &vop_kqfilter_desc, (vop_t *) ufsfifo_kqfilter }, 2640 { &vop_print_desc, (vop_t *) ufs_print }, 2641 { &vop_read_desc, (vop_t *) ufsfifo_read }, 2642 { &vop_reclaim_desc, (vop_t *) ufs_reclaim }, 2643 { &vop_setattr_desc, (vop_t *) ufs_setattr }, 2644#ifdef MAC 2645 { &vop_setlabel_desc, (vop_t *) vop_stdsetlabel_ea }, 2646#endif 2647 { &vop_write_desc, (vop_t *) ufsfifo_write }, 2648#ifdef UFS_EXTATTR 2649 { &vop_getextattr_desc, (vop_t *) ufs_getextattr }, 2650 { &vop_deleteextattr_desc, (vop_t *) ufs_deleteextattr }, 2651 { &vop_setextattr_desc, (vop_t *) ufs_setextattr }, 2652#endif 2653#ifdef UFS_ACL 2654 { &vop_getacl_desc, (vop_t *) ufs_getacl }, 2655 { &vop_setacl_desc, (vop_t *) ufs_setacl }, 2656 { &vop_aclcheck_desc, (vop_t *) ufs_aclcheck }, 2657#endif 2658 { NULL, NULL } 2659}; 2660static struct vnodeopv_desc ufs_fifoop_opv_desc = 2661 { &ufs_fifoop_p, ufs_fifoop_entries }; 2662 2663VNODEOP_SET(ufs_vnodeop_opv_desc); 2664VNODEOP_SET(ufs_fifoop_opv_desc); 2665 2666int 2667ufs_vnoperate(ap) 2668 struct vop_generic_args /* { 2669 struct vnodeop_desc *a_desc; 2670 } */ *ap; 2671{ 2672 return (VOCALL(ufs_vnodeop_p, ap->a_desc->vdesc_offset, ap)); 2673} 2674 2675int 2676ufs_vnoperatefifo(ap) 2677 struct vop_generic_args /* { 2678 struct vnodeop_desc *a_desc; 2679 } */ *ap; 2680{ 2681 return (VOCALL(ufs_fifoop_p, ap->a_desc->vdesc_offset, ap)); 2682} 2683