vfs_syscalls.c revision 1.31
1 /* $NetBSD: vfs_syscalls.c,v 1.31 1994/06/29 06:34:02 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)vfs_syscalls.c 8.15 (Berkeley) 6/4/94 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/namei.h> 46 #include <sys/filedesc.h> 47 #include <sys/kernel.h> 48 #include <sys/file.h> 49 #include <sys/stat.h> 50 #include <sys/vnode.h> 51 #include <sys/mount.h> 52 #include <sys/proc.h> 53 #include <sys/uio.h> 54 #include <sys/malloc.h> 55 #include <sys/dirent.h> 56 57 #include <vm/vm.h> 58 #include <sys/sysctl.h> 59 60 static int change_dir __P((struct nameidata *ndp, struct proc *p)); 61 62 /* 63 * Virtual File System System Calls 64 */ 65 66 /* 67 * Mount a file system. 68 */ 69 struct mount_args { 70 char *type; 71 char *path; 72 int flags; 73 caddr_t data; 74 }; 75 /* ARGSUSED */ 76 mount(p, uap, retval) 77 struct proc *p; 78 register struct mount_args *uap; 79 int *retval; 80 { 81 register struct vnode *vp; 82 register struct mount *mp; 83 int error, flag; 84 u_long fsindex; 85 char fstypename[MFSNAMELEN]; 86 struct nameidata nd; 87 88 /* 89 * Must be super user 90 */ 91 if (error = suser(p->p_ucred, &p->p_acflag)) 92 return (error); 93 /* 94 * Get vnode to be covered 95 */ 96 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); 97 if (error = namei(&nd)) 98 return (error); 99 vp = nd.ni_vp; 100 if (uap->flags & MNT_UPDATE) { 101 if ((vp->v_flag & VROOT) == 0) { 102 vput(vp); 103 return (EINVAL); 104 } 105 mp = vp->v_mount; 106 flag = mp->mnt_flag; 107 /* 108 * We only allow the filesystem to be reloaded if it 109 * is currently mounted read-only. 110 */ 111 if ((uap->flags & MNT_RELOAD) && 112 ((mp->mnt_flag & MNT_RDONLY) == 0)) { 113 vput(vp); 114 return (EOPNOTSUPP); /* Needs translation */ 115 } 116 mp->mnt_flag |= 117 uap->flags & (MNT_RELOAD | MNT_FORCE | MNT_UPDATE); 118 VOP_UNLOCK(vp); 119 goto update; 120 } 121 if (error = vinvalbuf(vp, V_SAVE, p->p_ucred, p, 0, 0)) 122 return (error); 123 if (vp->v_type != VDIR) { 124 vput(vp); 125 return (ENOTDIR); 126 } 127 if (error = copyin(uap->type, fstypename, MFSNAMELEN)) { 128 #ifdef COMPAT_09 129 goto check_num; 130 #else 131 vput(vp); 132 return (error); 133 #endif 134 } 135 fstypename[MFSNAMELEN] = '\0'; 136 for (fsindex = 0; fsindex < nvfssw; fsindex++) 137 if (vfssw[fsindex] != NULL && 138 !strncmp(vfssw[fsindex]->vfs_name, fstypename, MFSNAMELEN)) 139 break; 140 if (fsindex >= nvfssw) { 141 #ifdef COMPAT_09 142 check_num: 143 fsindex = (unsigned long)uap->type; 144 if (fsindex >= nvfssw || vfssw[fsindex] == NULL) { 145 vput(vp); 146 return (ENODEV); 147 } 148 #else 149 vput(vp); 150 return (ENODEV); 151 #endif 152 } 153 154 /* 155 * Allocate and initialize the file system. 156 */ 157 mp = (struct mount *)malloc((u_long)sizeof(struct mount), 158 M_MOUNT, M_WAITOK); 159 bzero((char *)mp, (u_long)sizeof(struct mount)); 160 mp->mnt_op = vfssw[fsindex]; 161 if (error = vfs_lock(mp)) { 162 free((caddr_t)mp, M_MOUNT); 163 vput(vp); 164 return (error); 165 } 166 if (vp->v_mountedhere != NULL) { 167 vfs_unlock(mp); 168 free((caddr_t)mp, M_MOUNT); 169 vput(vp); 170 return (EBUSY); 171 } 172 vp->v_mountedhere = mp; 173 mp->mnt_vnodecovered = vp; 174 update: 175 /* 176 * Set the mount level flags. 177 */ 178 if (uap->flags & MNT_RDONLY) 179 mp->mnt_flag |= MNT_RDONLY; 180 else if (mp->mnt_flag & MNT_RDONLY) 181 mp->mnt_flag |= MNT_WANTRDWR; 182 mp->mnt_flag &=~ (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | 183 MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC); 184 mp->mnt_flag |= uap->flags & (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | 185 MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC); 186 /* 187 * Mount the filesystem. 188 */ 189 error = VFS_MOUNT(mp, uap->path, uap->data, &nd, p); 190 if (mp->mnt_flag & MNT_UPDATE) { 191 vrele(vp); 192 if (mp->mnt_flag & MNT_WANTRDWR) 193 mp->mnt_flag &= ~MNT_RDONLY; 194 mp->mnt_flag &=~ 195 (MNT_UPDATE | MNT_RELOAD | MNT_FORCE | MNT_WANTRDWR); 196 if (error) 197 mp->mnt_flag = flag; 198 return (error); 199 } 200 /* 201 * Put the new filesystem on the mount list after root. 202 */ 203 cache_purge(vp); 204 if (!error) { 205 TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list); 206 VOP_UNLOCK(vp); 207 vfs_unlock(mp); 208 error = VFS_START(mp, 0, p); 209 } else { 210 mp->mnt_vnodecovered->v_mountedhere = (struct mount *)0; 211 vfs_unlock(mp); 212 free((caddr_t)mp, M_MOUNT); 213 vput(vp); 214 } 215 return (error); 216 } 217 218 /* 219 * Unmount a file system. 220 * 221 * Note: unmount takes a path to the vnode mounted on as argument, 222 * not special file (as before). 223 */ 224 struct unmount_args { 225 char *path; 226 int flags; 227 }; 228 /* ARGSUSED */ 229 unmount(p, uap, retval) 230 struct proc *p; 231 register struct unmount_args *uap; 232 int *retval; 233 { 234 register struct vnode *vp; 235 struct mount *mp; 236 int error; 237 struct nameidata nd; 238 239 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); 240 if (error = namei(&nd)) 241 return (error); 242 vp = nd.ni_vp; 243 244 /* 245 * Unless this is a user mount, then must 246 * have suser privilege. 247 */ 248 if (((vp->v_mount->mnt_flag & MNT_USER) == 0) && 249 (error = suser(p->p_ucred, &p->p_acflag))) { 250 vput(vp); 251 return (error); 252 } 253 254 /* 255 * Must be the root of the filesystem 256 */ 257 if ((vp->v_flag & VROOT) == 0) { 258 vput(vp); 259 return (EINVAL); 260 } 261 mp = vp->v_mount; 262 vput(vp); 263 return (dounmount(mp, uap->flags, p)); 264 } 265 266 /* 267 * Do the actual file system unmount. 268 */ 269 dounmount(mp, flags, p) 270 register struct mount *mp; 271 int flags; 272 struct proc *p; 273 { 274 struct vnode *coveredvp; 275 int error; 276 277 coveredvp = mp->mnt_vnodecovered; 278 if (vfs_busy(mp)) 279 return (EBUSY); 280 mp->mnt_flag |= MNT_UNMOUNT; 281 if (error = vfs_lock(mp)) 282 return (error); 283 284 mp->mnt_flag &=~ MNT_ASYNC; 285 vnode_pager_umount(mp); /* release cached vnodes */ 286 cache_purgevfs(mp); /* remove cache entries for this file sys */ 287 if ((error = VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p)) == 0 || 288 (flags & MNT_FORCE)) 289 error = VFS_UNMOUNT(mp, flags, p); 290 mp->mnt_flag &= ~MNT_UNMOUNT; 291 vfs_unbusy(mp); 292 if (error) { 293 vfs_unlock(mp); 294 } else { 295 vrele(coveredvp); 296 TAILQ_REMOVE(&mountlist, mp, mnt_list); 297 mp->mnt_vnodecovered->v_mountedhere = (struct mount *)0; 298 vfs_unlock(mp); 299 if (mp->mnt_vnodelist.lh_first != NULL) 300 panic("unmount: dangling vnode"); 301 free((caddr_t)mp, M_MOUNT); 302 } 303 return (error); 304 } 305 306 /* 307 * Sync each mounted filesystem. 308 */ 309 #ifdef DEBUG 310 int syncprt = 0; 311 struct ctldebug debug0 = { "syncprt", &syncprt }; 312 #endif 313 314 /* ARGSUSED */ 315 sync(p, uap, retval) 316 struct proc *p; 317 void *uap; 318 int *retval; 319 { 320 register struct mount *mp, *nmp; 321 int asyncflag; 322 323 for (mp = mountlist.tqh_first; mp != NULL; mp = nmp) { 324 nmp = mp->mnt_list.tqe_next; 325 /* 326 * The lock check below is to avoid races with mount 327 * and unmount. 328 */ 329 if ((mp->mnt_flag & (MNT_MLOCK|MNT_RDONLY|MNT_MPBUSY)) == 0 && 330 !vfs_busy(mp)) { 331 asyncflag = mp->mnt_flag & MNT_ASYNC; 332 mp->mnt_flag &= ~MNT_ASYNC; 333 VFS_SYNC(mp, MNT_NOWAIT, p->p_ucred, p); 334 if (asyncflag) 335 mp->mnt_flag |= MNT_ASYNC; 336 vfs_unbusy(mp); 337 } 338 } 339 #ifdef DEBUG 340 if (syncprt) 341 vfs_bufstats(); 342 #endif /* DEBUG */ 343 return (0); 344 } 345 346 /* 347 * Change filesystem quotas. 348 */ 349 struct quotactl_args { 350 char *path; 351 int cmd; 352 int uid; 353 caddr_t arg; 354 }; 355 /* ARGSUSED */ 356 quotactl(p, uap, retval) 357 struct proc *p; 358 register struct quotactl_args *uap; 359 int *retval; 360 { 361 register struct mount *mp; 362 int error; 363 struct nameidata nd; 364 365 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); 366 if (error = namei(&nd)) 367 return (error); 368 mp = nd.ni_vp->v_mount; 369 vrele(nd.ni_vp); 370 return (VFS_QUOTACTL(mp, uap->cmd, uap->uid, uap->arg, p)); 371 } 372 373 /* 374 * Get filesystem statistics. 375 */ 376 struct statfs_args { 377 char *path; 378 struct statfs *buf; 379 }; 380 /* ARGSUSED */ 381 statfs(p, uap, retval) 382 struct proc *p; 383 register struct statfs_args *uap; 384 int *retval; 385 { 386 register struct mount *mp; 387 register struct statfs *sp; 388 int error; 389 struct nameidata nd; 390 391 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); 392 if (error = namei(&nd)) 393 return (error); 394 mp = nd.ni_vp->v_mount; 395 sp = &mp->mnt_stat; 396 vrele(nd.ni_vp); 397 if (error = VFS_STATFS(mp, sp, p)) 398 return (error); 399 sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 400 return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); 401 } 402 403 /* 404 * Get filesystem statistics. 405 */ 406 struct fstatfs_args { 407 int fd; 408 struct statfs *buf; 409 }; 410 /* ARGSUSED */ 411 fstatfs(p, uap, retval) 412 struct proc *p; 413 register struct fstatfs_args *uap; 414 int *retval; 415 { 416 struct file *fp; 417 struct mount *mp; 418 register struct statfs *sp; 419 int error; 420 421 if (error = getvnode(p->p_fd, uap->fd, &fp)) 422 return (error); 423 mp = ((struct vnode *)fp->f_data)->v_mount; 424 sp = &mp->mnt_stat; 425 if (error = VFS_STATFS(mp, sp, p)) 426 return (error); 427 sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 428 return (copyout((caddr_t)sp, (caddr_t)uap->buf, sizeof(*sp))); 429 } 430 431 /* 432 * Get statistics on all filesystems. 433 */ 434 struct getfsstat_args { 435 struct statfs *buf; 436 long bufsize; 437 int flags; 438 }; 439 getfsstat(p, uap, retval) 440 struct proc *p; 441 register struct getfsstat_args *uap; 442 int *retval; 443 { 444 register struct mount *mp, *nmp; 445 register struct statfs *sp; 446 caddr_t sfsp; 447 long count, maxcount, error; 448 449 maxcount = uap->bufsize / sizeof(struct statfs); 450 sfsp = (caddr_t)uap->buf; 451 for (count = 0, mp = mountlist.tqh_first; mp != NULL; mp = nmp) { 452 nmp = mp->mnt_list.tqe_next; 453 if (sfsp && count < maxcount && 454 ((mp->mnt_flag & MNT_MLOCK) == 0)) { 455 sp = &mp->mnt_stat; 456 /* 457 * If MNT_NOWAIT is specified, do not refresh the 458 * fsstat cache. MNT_WAIT overrides MNT_NOWAIT. 459 */ 460 if (((uap->flags & MNT_NOWAIT) == 0 || 461 (uap->flags & MNT_WAIT)) && 462 (error = VFS_STATFS(mp, sp, p))) 463 continue; 464 sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK; 465 if (error = copyout((caddr_t)sp, sfsp, sizeof(*sp))) 466 return (error); 467 sfsp += sizeof(*sp); 468 } 469 count++; 470 } 471 if (sfsp && count > maxcount) 472 *retval = maxcount; 473 else 474 *retval = count; 475 return (0); 476 } 477 478 /* 479 * Change current working directory to a given file descriptor. 480 */ 481 struct fchdir_args { 482 int fd; 483 }; 484 /* ARGSUSED */ 485 fchdir(p, uap, retval) 486 struct proc *p; 487 struct fchdir_args *uap; 488 int *retval; 489 { 490 register struct filedesc *fdp = p->p_fd; 491 register struct vnode *vp; 492 struct file *fp; 493 int error; 494 495 if (error = getvnode(fdp, uap->fd, &fp)) 496 return (error); 497 vp = (struct vnode *)fp->f_data; 498 VOP_LOCK(vp); 499 if (vp->v_type != VDIR) 500 error = ENOTDIR; 501 else 502 error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); 503 VOP_UNLOCK(vp); 504 if (error) 505 return (error); 506 VREF(vp); 507 vrele(fdp->fd_cdir); 508 fdp->fd_cdir = vp; 509 return (0); 510 } 511 512 /* 513 * Change current working directory (``.''). 514 */ 515 struct chdir_args { 516 char *path; 517 }; 518 /* ARGSUSED */ 519 chdir(p, uap, retval) 520 struct proc *p; 521 struct chdir_args *uap; 522 int *retval; 523 { 524 register struct filedesc *fdp = p->p_fd; 525 int error; 526 struct nameidata nd; 527 528 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); 529 if (error = change_dir(&nd, p)) 530 return (error); 531 vrele(fdp->fd_cdir); 532 fdp->fd_cdir = nd.ni_vp; 533 return (0); 534 } 535 536 /* 537 * Change notion of root (``/'') directory. 538 */ 539 struct chroot_args { 540 char *path; 541 }; 542 /* ARGSUSED */ 543 chroot(p, uap, retval) 544 struct proc *p; 545 struct chroot_args *uap; 546 int *retval; 547 { 548 register struct filedesc *fdp = p->p_fd; 549 int error; 550 struct nameidata nd; 551 552 if (error = suser(p->p_ucred, &p->p_acflag)) 553 return (error); 554 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); 555 if (error = change_dir(&nd, p)) 556 return (error); 557 if (fdp->fd_rdir != NULL) 558 vrele(fdp->fd_rdir); 559 fdp->fd_rdir = nd.ni_vp; 560 return (0); 561 } 562 563 /* 564 * Common routine for chroot and chdir. 565 */ 566 static int 567 change_dir(ndp, p) 568 register struct nameidata *ndp; 569 struct proc *p; 570 { 571 struct vnode *vp; 572 int error; 573 574 if (error = namei(ndp)) 575 return (error); 576 vp = ndp->ni_vp; 577 if (vp->v_type != VDIR) 578 error = ENOTDIR; 579 else 580 error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); 581 VOP_UNLOCK(vp); 582 if (error) 583 vrele(vp); 584 return (error); 585 } 586 587 /* 588 * Check permissions, allocate an open file structure, 589 * and call the device open routine if any. 590 */ 591 struct open_args { 592 char *path; 593 int flags; 594 int mode; 595 }; 596 open(p, uap, retval) 597 struct proc *p; 598 register struct open_args *uap; 599 int *retval; 600 { 601 register struct filedesc *fdp = p->p_fd; 602 register struct file *fp; 603 register struct vnode *vp; 604 int flags, cmode; 605 struct file *nfp; 606 int type, indx, error; 607 struct flock lf; 608 struct nameidata nd; 609 extern struct fileops vnops; 610 611 if (error = falloc(p, &nfp, &indx)) 612 return (error); 613 fp = nfp; 614 flags = FFLAGS(uap->flags); 615 cmode = ((uap->mode &~ fdp->fd_cmask) & ALLPERMS) &~ S_ISTXT; 616 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); 617 p->p_dupfd = -indx - 1; /* XXX check for fdopen */ 618 if (error = vn_open(&nd, flags, cmode)) { 619 ffree(fp); 620 if ((error == ENODEV || error == ENXIO) && 621 p->p_dupfd >= 0 && /* XXX from fdopen */ 622 (error = 623 dupfdopen(fdp, indx, p->p_dupfd, flags, error)) == 0) { 624 *retval = indx; 625 return (0); 626 } 627 if (error == ERESTART) 628 error = EINTR; 629 fdp->fd_ofiles[indx] = NULL; 630 return (error); 631 } 632 p->p_dupfd = 0; 633 vp = nd.ni_vp; 634 fp->f_flag = flags & FMASK; 635 fp->f_type = DTYPE_VNODE; 636 fp->f_ops = &vnops; 637 fp->f_data = (caddr_t)vp; 638 if (flags & (O_EXLOCK | O_SHLOCK)) { 639 lf.l_whence = SEEK_SET; 640 lf.l_start = 0; 641 lf.l_len = 0; 642 if (flags & O_EXLOCK) 643 lf.l_type = F_WRLCK; 644 else 645 lf.l_type = F_RDLCK; 646 type = F_FLOCK; 647 if ((flags & FNONBLOCK) == 0) 648 type |= F_WAIT; 649 VOP_UNLOCK(vp); 650 if (error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, type)) { 651 (void) vn_close(vp, fp->f_flag, fp->f_cred, p); 652 ffree(fp); 653 fdp->fd_ofiles[indx] = NULL; 654 return (error); 655 } 656 VOP_LOCK(vp); 657 fp->f_flag |= FHASLOCK; 658 } 659 VOP_UNLOCK(vp); 660 *retval = indx; 661 return (0); 662 } 663 664 #ifdef COMPAT_43 665 /* 666 * Create a file. 667 */ 668 struct ocreat_args { 669 char *path; 670 int mode; 671 }; 672 ocreat(p, uap, retval) 673 struct proc *p; 674 register struct ocreat_args *uap; 675 int *retval; 676 { 677 struct open_args openuap; 678 679 openuap.path = uap->path; 680 openuap.mode = uap->mode; 681 openuap.flags = O_WRONLY | O_CREAT | O_TRUNC; 682 return (open(p, &openuap, retval)); 683 } 684 #endif /* COMPAT_43 */ 685 686 /* 687 * Create a special file. 688 */ 689 struct mknod_args { 690 char *path; 691 int mode; 692 int dev; 693 }; 694 /* ARGSUSED */ 695 mknod(p, uap, retval) 696 struct proc *p; 697 register struct mknod_args *uap; 698 int *retval; 699 { 700 register struct vnode *vp; 701 struct vattr vattr; 702 int error; 703 struct nameidata nd; 704 705 if (error = suser(p->p_ucred, &p->p_acflag)) 706 return (error); 707 NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); 708 if (error = namei(&nd)) 709 return (error); 710 vp = nd.ni_vp; 711 if (vp != NULL) { 712 error = EEXIST; 713 goto bad; 714 } 715 VATTR_NULL(&vattr); 716 vattr.va_mode = (uap->mode & ALLPERMS) &~ p->p_fd->fd_cmask; 717 vattr.va_rdev = uap->dev; 718 719 switch (uap->mode & S_IFMT) { 720 case S_IFMT: /* used by badsect to flag bad sectors */ 721 vattr.va_type = VBAD; 722 break; 723 case S_IFCHR: 724 vattr.va_type = VCHR; 725 break; 726 case S_IFBLK: 727 vattr.va_type = VBLK; 728 break; 729 default: 730 error = EINVAL; 731 goto bad; 732 } 733 LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); 734 return (VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr)); 735 bad: 736 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); 737 if (nd.ni_dvp == vp) 738 vrele(nd.ni_dvp); 739 else 740 vput(nd.ni_dvp); 741 if (vp) 742 vrele(vp); 743 return (error); 744 } 745 746 /* 747 * Create a named pipe. 748 */ 749 struct mkfifo_args { 750 char *path; 751 int mode; 752 }; 753 /* ARGSUSED */ 754 mkfifo(p, uap, retval) 755 struct proc *p; 756 register struct mkfifo_args *uap; 757 int *retval; 758 { 759 struct vattr vattr; 760 int error; 761 struct nameidata nd; 762 763 #ifndef FIFO 764 return (EOPNOTSUPP); 765 #else 766 NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); 767 if (error = namei(&nd)) 768 return (error); 769 if (nd.ni_vp != NULL) { 770 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); 771 if (nd.ni_dvp == nd.ni_vp) 772 vrele(nd.ni_dvp); 773 else 774 vput(nd.ni_dvp); 775 vrele(nd.ni_vp); 776 return (EEXIST); 777 } 778 VATTR_NULL(&vattr); 779 vattr.va_type = VFIFO; 780 vattr.va_mode = (uap->mode & ALLPERMS) &~ p->p_fd->fd_cmask; 781 LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); 782 return (VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr)); 783 #endif /* FIFO */ 784 } 785 786 /* 787 * Make a hard file link. 788 */ 789 struct link_args { 790 char *path; 791 char *link; 792 }; 793 /* ARGSUSED */ 794 link(p, uap, retval) 795 struct proc *p; 796 register struct link_args *uap; 797 int *retval; 798 { 799 register struct vnode *vp; 800 struct nameidata nd; 801 int error; 802 803 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); 804 if (error = namei(&nd)) 805 return (error); 806 vp = nd.ni_vp; 807 if (vp->v_type == VDIR && 808 (error = suser(p->p_ucred, &p->p_acflag))) 809 goto bad1; 810 nd.ni_cnd.cn_nameiop = CREATE; 811 nd.ni_cnd.cn_flags = LOCKPARENT; 812 nd.ni_dirp = uap->link; 813 if (error = namei(&nd)) 814 goto bad1; 815 if (nd.ni_vp != NULL) { 816 error = EEXIST; 817 goto bad2; 818 } 819 LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); 820 LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); 821 error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd); 822 vrele(vp); 823 return (error); 824 bad2: 825 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); 826 if (nd.ni_dvp == nd.ni_vp) 827 vrele(nd.ni_dvp); 828 else 829 vput(nd.ni_dvp); 830 if (nd.ni_vp) 831 vrele(nd.ni_vp); 832 bad1: 833 vrele(vp); 834 return (error); 835 } 836 837 /* 838 * Make a symbolic link. 839 */ 840 struct symlink_args { 841 char *path; 842 char *link; 843 }; 844 /* ARGSUSED */ 845 symlink(p, uap, retval) 846 struct proc *p; 847 register struct symlink_args *uap; 848 int *retval; 849 { 850 struct vattr vattr; 851 char *path; 852 int error; 853 struct nameidata nd; 854 855 MALLOC(path, char *, MAXPATHLEN, M_NAMEI, M_WAITOK); 856 if (error = copyinstr(uap->path, path, MAXPATHLEN, (u_int*)0)) 857 goto bad; 858 NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->link, p); 859 if (error = namei(&nd)) 860 goto bad; 861 if (nd.ni_vp) { 862 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); 863 if (nd.ni_dvp == nd.ni_vp) 864 vrele(nd.ni_dvp); 865 else 866 vput(nd.ni_dvp); 867 vrele(nd.ni_vp); 868 error = EEXIST; 869 goto bad; 870 } 871 VATTR_NULL(&vattr); 872 vattr.va_mode = ACCESSPERMS &~ p->p_fd->fd_cmask; 873 LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); 874 error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr, path); 875 bad: 876 FREE(path, M_NAMEI); 877 return (error); 878 } 879 880 /* 881 * Delete a name from the filesystem. 882 */ 883 struct unlink_args { 884 char *path; 885 }; 886 /* ARGSUSED */ 887 unlink(p, uap, retval) 888 struct proc *p; 889 struct unlink_args *uap; 890 int *retval; 891 { 892 register struct vnode *vp; 893 int error; 894 struct nameidata nd; 895 896 NDINIT(&nd, DELETE, LOCKPARENT, UIO_USERSPACE, uap->path, p); 897 if (error = namei(&nd)) 898 return (error); 899 vp = nd.ni_vp; 900 LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); 901 VOP_LOCK(vp); 902 903 if (vp->v_type == VDIR && 904 (error = suser(p->p_ucred, &p->p_acflag))) 905 goto bad; 906 /* 907 * The root of a mounted filesystem cannot be deleted. 908 */ 909 if (vp->v_flag & VROOT) { 910 error = EBUSY; 911 goto bad; 912 } 913 (void)vnode_pager_uncache(vp); 914 LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); 915 return (VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd)); 916 bad: 917 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); 918 if (nd.ni_dvp == vp) 919 vrele(nd.ni_dvp); 920 else 921 vput(nd.ni_dvp); 922 vput(vp); 923 return (error); 924 } 925 926 /* 927 * Reposition read/write file offset. 928 */ 929 struct lseek_args { 930 int fd; 931 int pad; 932 off_t offset; 933 int whence; 934 }; 935 lseek(p, uap, retval) 936 struct proc *p; 937 register struct lseek_args *uap; 938 int *retval; 939 { 940 struct ucred *cred = p->p_ucred; 941 register struct filedesc *fdp = p->p_fd; 942 register struct file *fp; 943 struct vattr vattr; 944 int error; 945 946 if ((u_int)uap->fd >= fdp->fd_nfiles || 947 (fp = fdp->fd_ofiles[uap->fd]) == NULL) 948 return (EBADF); 949 if (fp->f_type != DTYPE_VNODE) 950 return (ESPIPE); 951 switch (uap->whence) { 952 case L_INCR: 953 fp->f_offset += uap->offset; 954 break; 955 case L_XTND: 956 if (error = 957 VOP_GETATTR((struct vnode *)fp->f_data, &vattr, cred, p)) 958 return (error); 959 fp->f_offset = uap->offset + vattr.va_size; 960 break; 961 case L_SET: 962 fp->f_offset = uap->offset; 963 break; 964 default: 965 return (EINVAL); 966 } 967 *(off_t *)retval = fp->f_offset; 968 return (0); 969 } 970 971 #if defined(COMPAT_43) || defined(COMPAT_SUNOS) 972 /* 973 * Reposition read/write file offset. 974 */ 975 struct olseek_args { 976 int fd; 977 long offset; 978 int whence; 979 }; 980 olseek(p, uap, retval) 981 struct proc *p; 982 register struct olseek_args *uap; 983 int *retval; 984 { 985 struct lseek_args nuap; 986 off_t qret; 987 int error; 988 989 nuap.fd = uap->fd; 990 nuap.offset = uap->offset; 991 nuap.whence = uap->whence; 992 error = lseek(p, &nuap, &qret); 993 *(long *)retval = qret; 994 return (error); 995 } 996 #endif /* COMPAT_43 || COMPAT_SUNOS */ 997 998 /* 999 * Check access permissions. 1000 */ 1001 struct access_args { 1002 char *path; 1003 int flags; 1004 }; 1005 access(p, uap, retval) 1006 struct proc *p; 1007 register struct access_args *uap; 1008 int *retval; 1009 { 1010 register struct ucred *cred = p->p_ucred; 1011 register struct vnode *vp; 1012 int error, flags, t_gid, t_uid; 1013 struct nameidata nd; 1014 1015 t_uid = cred->cr_uid; 1016 t_gid = cred->cr_groups[0]; 1017 cred->cr_uid = p->p_cred->p_ruid; 1018 cred->cr_groups[0] = p->p_cred->p_rgid; 1019 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); 1020 if (error = namei(&nd)) 1021 goto out1; 1022 vp = nd.ni_vp; 1023 1024 /* Flags == 0 means only check for existence. */ 1025 if (uap->flags) { 1026 flags = 0; 1027 if (uap->flags & R_OK) 1028 flags |= VREAD; 1029 if (uap->flags & W_OK) 1030 flags |= VWRITE; 1031 if (uap->flags & X_OK) 1032 flags |= VEXEC; 1033 if ((flags & VWRITE) == 0 || (error = vn_writechk(vp)) == 0) 1034 error = VOP_ACCESS(vp, flags, cred, p); 1035 } 1036 vput(vp); 1037 out1: 1038 cred->cr_uid = t_uid; 1039 cred->cr_groups[0] = t_gid; 1040 return (error); 1041 } 1042 1043 #if defined(COMPAT_43) || defined(COMPAT_SUNOS) 1044 /* 1045 * Get file status; this version follows links. 1046 */ 1047 struct ostat_args { 1048 char *path; 1049 struct ostat *ub; 1050 }; 1051 /* ARGSUSED */ 1052 ostat(p, uap, retval) 1053 struct proc *p; 1054 register struct ostat_args *uap; 1055 int *retval; 1056 { 1057 struct stat sb; 1058 struct ostat osb; 1059 int error; 1060 struct nameidata nd; 1061 1062 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); 1063 if (error = namei(&nd)) 1064 return (error); 1065 error = vn_stat(nd.ni_vp, &sb, p); 1066 vput(nd.ni_vp); 1067 if (error) 1068 return (error); 1069 cvtstat(&sb, &osb); 1070 error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); 1071 return (error); 1072 } 1073 1074 /* 1075 * Get file status; this version does not follow links. 1076 */ 1077 struct olstat_args { 1078 char *path; 1079 struct ostat *ub; 1080 }; 1081 /* ARGSUSED */ 1082 olstat(p, uap, retval) 1083 struct proc *p; 1084 register struct olstat_args *uap; 1085 int *retval; 1086 { 1087 struct stat sb; 1088 struct ostat osb; 1089 int error; 1090 struct nameidata nd; 1091 1092 NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); 1093 if (error = namei(&nd)) 1094 return (error); 1095 error = vn_stat(nd.ni_vp, &sb, p); 1096 vput(nd.ni_vp); 1097 if (error) 1098 return (error); 1099 cvtstat(&sb, &osb); 1100 error = copyout((caddr_t)&osb, (caddr_t)uap->ub, sizeof (osb)); 1101 return (error); 1102 } 1103 1104 /* 1105 * Convert from an old to a new stat structure. 1106 */ 1107 cvtstat(st, ost) 1108 struct stat *st; 1109 struct ostat *ost; 1110 { 1111 1112 ost->st_dev = st->st_dev; 1113 ost->st_ino = st->st_ino; 1114 ost->st_mode = st->st_mode; 1115 ost->st_nlink = st->st_nlink; 1116 ost->st_uid = st->st_uid; 1117 ost->st_gid = st->st_gid; 1118 ost->st_rdev = st->st_rdev; 1119 if (st->st_size < (quad_t)1 << 32) 1120 ost->st_size = st->st_size; 1121 else 1122 ost->st_size = -2; 1123 ost->st_atime = st->st_atime; 1124 ost->st_mtime = st->st_mtime; 1125 ost->st_ctime = st->st_ctime; 1126 ost->st_blksize = st->st_blksize; 1127 ost->st_blocks = st->st_blocks; 1128 ost->st_flags = st->st_flags; 1129 ost->st_gen = st->st_gen; 1130 } 1131 #endif /* COMPAT_43 || COMPAT_SUNOS */ 1132 1133 /* 1134 * Get file status; this version follows links. 1135 */ 1136 struct stat_args { 1137 char *path; 1138 struct stat *ub; 1139 }; 1140 /* ARGSUSED */ 1141 stat(p, uap, retval) 1142 struct proc *p; 1143 register struct stat_args *uap; 1144 int *retval; 1145 { 1146 struct stat sb; 1147 int error; 1148 struct nameidata nd; 1149 1150 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); 1151 if (error = namei(&nd)) 1152 return (error); 1153 error = vn_stat(nd.ni_vp, &sb, p); 1154 vput(nd.ni_vp); 1155 if (error) 1156 return (error); 1157 error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); 1158 return (error); 1159 } 1160 1161 /* 1162 * Get file status; this version does not follow links. 1163 */ 1164 struct lstat_args { 1165 char *path; 1166 struct stat *ub; 1167 }; 1168 /* ARGSUSED */ 1169 lstat(p, uap, retval) 1170 struct proc *p; 1171 register struct lstat_args *uap; 1172 int *retval; 1173 { 1174 int error; 1175 struct vnode *vp, *dvp; 1176 struct stat sb, sb1; 1177 struct nameidata nd; 1178 1179 NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKPARENT, UIO_USERSPACE, 1180 uap->path, p); 1181 if (error = namei(&nd)) 1182 return (error); 1183 /* 1184 * For symbolic links, always return the attributes of its 1185 * containing directory, except for mode, size, and links. 1186 */ 1187 vp = nd.ni_vp; 1188 dvp = nd.ni_dvp; 1189 if (vp->v_type != VLNK) { 1190 if (dvp == vp) 1191 vrele(dvp); 1192 else 1193 vput(dvp); 1194 error = vn_stat(vp, &sb, p); 1195 vput(vp); 1196 if (error) 1197 return (error); 1198 } else { 1199 error = vn_stat(dvp, &sb, p); 1200 vput(dvp); 1201 if (error) { 1202 vput(vp); 1203 return (error); 1204 } 1205 error = vn_stat(vp, &sb1, p); 1206 vput(vp); 1207 if (error) 1208 return (error); 1209 sb.st_mode &= ~S_IFDIR; 1210 sb.st_mode |= S_IFLNK; 1211 sb.st_nlink = sb1.st_nlink; 1212 sb.st_size = sb1.st_size; 1213 sb.st_blocks = sb1.st_blocks; 1214 } 1215 error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb)); 1216 return (error); 1217 } 1218 1219 /* 1220 * Get configurable pathname variables. 1221 */ 1222 struct pathconf_args { 1223 char *path; 1224 int name; 1225 }; 1226 /* ARGSUSED */ 1227 pathconf(p, uap, retval) 1228 struct proc *p; 1229 register struct pathconf_args *uap; 1230 int *retval; 1231 { 1232 int error; 1233 struct nameidata nd; 1234 1235 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); 1236 if (error = namei(&nd)) 1237 return (error); 1238 error = VOP_PATHCONF(nd.ni_vp, uap->name, retval); 1239 vput(nd.ni_vp); 1240 return (error); 1241 } 1242 1243 /* 1244 * Return target name of a symbolic link. 1245 */ 1246 struct readlink_args { 1247 char *path; 1248 char *buf; 1249 int count; 1250 }; 1251 /* ARGSUSED */ 1252 readlink(p, uap, retval) 1253 struct proc *p; 1254 register struct readlink_args *uap; 1255 int *retval; 1256 { 1257 register struct vnode *vp; 1258 struct iovec aiov; 1259 struct uio auio; 1260 int error; 1261 struct nameidata nd; 1262 1263 NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE, uap->path, p); 1264 if (error = namei(&nd)) 1265 return (error); 1266 vp = nd.ni_vp; 1267 if (vp->v_type != VLNK) 1268 error = EINVAL; 1269 else { 1270 aiov.iov_base = uap->buf; 1271 aiov.iov_len = uap->count; 1272 auio.uio_iov = &aiov; 1273 auio.uio_iovcnt = 1; 1274 auio.uio_offset = 0; 1275 auio.uio_rw = UIO_READ; 1276 auio.uio_segflg = UIO_USERSPACE; 1277 auio.uio_procp = p; 1278 auio.uio_resid = uap->count; 1279 error = VOP_READLINK(vp, &auio, p->p_ucred); 1280 } 1281 vput(vp); 1282 *retval = uap->count - auio.uio_resid; 1283 return (error); 1284 } 1285 1286 /* 1287 * Change flags of a file given a path name. 1288 */ 1289 struct chflags_args { 1290 char *path; 1291 int flags; 1292 }; 1293 /* ARGSUSED */ 1294 chflags(p, uap, retval) 1295 struct proc *p; 1296 register struct chflags_args *uap; 1297 int *retval; 1298 { 1299 register struct vnode *vp; 1300 struct vattr vattr; 1301 int error; 1302 struct nameidata nd; 1303 1304 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); 1305 if (error = namei(&nd)) 1306 return (error); 1307 vp = nd.ni_vp; 1308 LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); 1309 VOP_LOCK(vp); 1310 if (vp->v_mount->mnt_flag & MNT_RDONLY) 1311 error = EROFS; 1312 else { 1313 VATTR_NULL(&vattr); 1314 vattr.va_flags = uap->flags; 1315 error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); 1316 } 1317 vput(vp); 1318 return (error); 1319 } 1320 1321 /* 1322 * Change flags of a file given a file descriptor. 1323 */ 1324 struct fchflags_args { 1325 int fd; 1326 int flags; 1327 }; 1328 /* ARGSUSED */ 1329 fchflags(p, uap, retval) 1330 struct proc *p; 1331 register struct fchflags_args *uap; 1332 int *retval; 1333 { 1334 struct vattr vattr; 1335 struct vnode *vp; 1336 struct file *fp; 1337 int error; 1338 1339 if (error = getvnode(p->p_fd, uap->fd, &fp)) 1340 return (error); 1341 vp = (struct vnode *)fp->f_data; 1342 LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); 1343 VOP_LOCK(vp); 1344 if (vp->v_mount->mnt_flag & MNT_RDONLY) 1345 error = EROFS; 1346 else { 1347 VATTR_NULL(&vattr); 1348 vattr.va_flags = uap->flags; 1349 error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); 1350 } 1351 VOP_UNLOCK(vp); 1352 return (error); 1353 } 1354 1355 /* 1356 * Change mode of a file given path name. 1357 */ 1358 struct chmod_args { 1359 char *path; 1360 int mode; 1361 }; 1362 /* ARGSUSED */ 1363 chmod(p, uap, retval) 1364 struct proc *p; 1365 register struct chmod_args *uap; 1366 int *retval; 1367 { 1368 register struct vnode *vp; 1369 struct vattr vattr; 1370 int error; 1371 struct nameidata nd; 1372 1373 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); 1374 if (error = namei(&nd)) 1375 return (error); 1376 vp = nd.ni_vp; 1377 LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); 1378 VOP_LOCK(vp); 1379 if (vp->v_mount->mnt_flag & MNT_RDONLY) 1380 error = EROFS; 1381 else { 1382 VATTR_NULL(&vattr); 1383 vattr.va_mode = uap->mode & ALLPERMS; 1384 error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); 1385 } 1386 vput(vp); 1387 return (error); 1388 } 1389 1390 /* 1391 * Change mode of a file given a file descriptor. 1392 */ 1393 struct fchmod_args { 1394 int fd; 1395 int mode; 1396 }; 1397 /* ARGSUSED */ 1398 fchmod(p, uap, retval) 1399 struct proc *p; 1400 register struct fchmod_args *uap; 1401 int *retval; 1402 { 1403 struct vattr vattr; 1404 struct vnode *vp; 1405 struct file *fp; 1406 int error; 1407 1408 if (error = getvnode(p->p_fd, uap->fd, &fp)) 1409 return (error); 1410 vp = (struct vnode *)fp->f_data; 1411 LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); 1412 VOP_LOCK(vp); 1413 if (vp->v_mount->mnt_flag & MNT_RDONLY) 1414 error = EROFS; 1415 else { 1416 VATTR_NULL(&vattr); 1417 vattr.va_mode = uap->mode & ALLPERMS; 1418 error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); 1419 } 1420 VOP_UNLOCK(vp); 1421 return (error); 1422 } 1423 1424 /* 1425 * Set ownership given a path name. 1426 */ 1427 struct chown_args { 1428 char *path; 1429 int uid; 1430 int gid; 1431 }; 1432 /* ARGSUSED */ 1433 chown(p, uap, retval) 1434 struct proc *p; 1435 register struct chown_args *uap; 1436 int *retval; 1437 { 1438 register struct vnode *vp; 1439 struct vattr vattr; 1440 int error; 1441 struct nameidata nd; 1442 1443 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); 1444 if (error = namei(&nd)) 1445 return (error); 1446 vp = nd.ni_vp; 1447 LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); 1448 VOP_LOCK(vp); 1449 if (vp->v_mount->mnt_flag & MNT_RDONLY) 1450 error = EROFS; 1451 else { 1452 VATTR_NULL(&vattr); 1453 vattr.va_uid = uap->uid; 1454 vattr.va_gid = uap->gid; 1455 error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); 1456 } 1457 vput(vp); 1458 return (error); 1459 } 1460 1461 /* 1462 * Set ownership given a file descriptor. 1463 */ 1464 struct fchown_args { 1465 int fd; 1466 int uid; 1467 int gid; 1468 }; 1469 /* ARGSUSED */ 1470 fchown(p, uap, retval) 1471 struct proc *p; 1472 register struct fchown_args *uap; 1473 int *retval; 1474 { 1475 struct vattr vattr; 1476 struct vnode *vp; 1477 struct file *fp; 1478 int error; 1479 1480 if (error = getvnode(p->p_fd, uap->fd, &fp)) 1481 return (error); 1482 vp = (struct vnode *)fp->f_data; 1483 LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); 1484 VOP_LOCK(vp); 1485 if (vp->v_mount->mnt_flag & MNT_RDONLY) 1486 error = EROFS; 1487 else { 1488 VATTR_NULL(&vattr); 1489 vattr.va_uid = uap->uid; 1490 vattr.va_gid = uap->gid; 1491 error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); 1492 } 1493 VOP_UNLOCK(vp); 1494 return (error); 1495 } 1496 1497 /* 1498 * Set the access and modification times of a file. 1499 */ 1500 struct utimes_args { 1501 char *path; 1502 struct timeval *tptr; 1503 }; 1504 /* ARGSUSED */ 1505 utimes(p, uap, retval) 1506 struct proc *p; 1507 register struct utimes_args *uap; 1508 int *retval; 1509 { 1510 register struct vnode *vp; 1511 struct timeval tv[2]; 1512 struct vattr vattr; 1513 int error; 1514 struct nameidata nd; 1515 1516 VATTR_NULL(&vattr); 1517 if (uap->tptr == NULL) { 1518 microtime(&tv[0]); 1519 tv[1] = tv[0]; 1520 vattr.va_vaflags |= VA_UTIMES_NULL; 1521 } else if (error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv))) 1522 return (error); 1523 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); 1524 if (error = namei(&nd)) 1525 return (error); 1526 vp = nd.ni_vp; 1527 LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); 1528 VOP_LOCK(vp); 1529 if (vp->v_mount->mnt_flag & MNT_RDONLY) 1530 error = EROFS; 1531 else { 1532 vattr.va_atime.ts_sec = tv[0].tv_sec; 1533 vattr.va_atime.ts_nsec = tv[0].tv_usec * 1000; 1534 vattr.va_mtime.ts_sec = tv[1].tv_sec; 1535 vattr.va_mtime.ts_nsec = tv[1].tv_usec * 1000; 1536 error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); 1537 } 1538 vput(vp); 1539 return (error); 1540 } 1541 1542 /* 1543 * Truncate a file given its path name. 1544 */ 1545 struct truncate_args { 1546 char *path; 1547 int pad; 1548 off_t length; 1549 }; 1550 /* ARGSUSED */ 1551 truncate(p, uap, retval) 1552 struct proc *p; 1553 register struct truncate_args *uap; 1554 int *retval; 1555 { 1556 register struct vnode *vp; 1557 struct vattr vattr; 1558 int error; 1559 struct nameidata nd; 1560 1561 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); 1562 if (error = namei(&nd)) 1563 return (error); 1564 vp = nd.ni_vp; 1565 LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); 1566 VOP_LOCK(vp); 1567 if (vp->v_type == VDIR) 1568 error = EISDIR; 1569 else if ((error = vn_writechk(vp)) == 0 && 1570 (error = VOP_ACCESS(vp, VWRITE, p->p_ucred, p)) == 0) { 1571 VATTR_NULL(&vattr); 1572 vattr.va_size = uap->length; 1573 error = VOP_SETATTR(vp, &vattr, p->p_ucred, p); 1574 } 1575 vput(vp); 1576 return (error); 1577 } 1578 1579 /* 1580 * Truncate a file given a file descriptor. 1581 */ 1582 struct ftruncate_args { 1583 int fd; 1584 int pad; 1585 off_t length; 1586 }; 1587 /* ARGSUSED */ 1588 ftruncate(p, uap, retval) 1589 struct proc *p; 1590 register struct ftruncate_args *uap; 1591 int *retval; 1592 { 1593 struct vattr vattr; 1594 struct vnode *vp; 1595 struct file *fp; 1596 int error; 1597 1598 if (error = getvnode(p->p_fd, uap->fd, &fp)) 1599 return (error); 1600 if ((fp->f_flag & FWRITE) == 0) 1601 return (EINVAL); 1602 vp = (struct vnode *)fp->f_data; 1603 LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); 1604 VOP_LOCK(vp); 1605 if (vp->v_type == VDIR) 1606 error = EISDIR; 1607 else if ((error = vn_writechk(vp)) == 0) { 1608 VATTR_NULL(&vattr); 1609 vattr.va_size = uap->length; 1610 error = VOP_SETATTR(vp, &vattr, fp->f_cred, p); 1611 } 1612 VOP_UNLOCK(vp); 1613 return (error); 1614 } 1615 1616 #if defined(COMPAT_43) || defined(COMPAT_SUNOS) 1617 /* 1618 * Truncate a file given its path name. 1619 */ 1620 struct otruncate_args { 1621 char *path; 1622 long length; 1623 }; 1624 /* ARGSUSED */ 1625 otruncate(p, uap, retval) 1626 struct proc *p; 1627 register struct otruncate_args *uap; 1628 int *retval; 1629 { 1630 struct truncate_args nuap; 1631 1632 nuap.path = uap->path; 1633 nuap.length = uap->length; 1634 return (truncate(p, &nuap, retval)); 1635 } 1636 1637 /* 1638 * Truncate a file given a file descriptor. 1639 */ 1640 struct oftruncate_args { 1641 int fd; 1642 long length; 1643 }; 1644 /* ARGSUSED */ 1645 oftruncate(p, uap, retval) 1646 struct proc *p; 1647 register struct oftruncate_args *uap; 1648 int *retval; 1649 { 1650 struct ftruncate_args nuap; 1651 1652 nuap.fd = uap->fd; 1653 nuap.length = uap->length; 1654 return (ftruncate(p, &nuap, retval)); 1655 } 1656 #endif /* COMPAT_43 || COMPAT_SUNOS */ 1657 1658 /* 1659 * Sync an open file. 1660 */ 1661 struct fsync_args { 1662 int fd; 1663 }; 1664 /* ARGSUSED */ 1665 fsync(p, uap, retval) 1666 struct proc *p; 1667 struct fsync_args *uap; 1668 int *retval; 1669 { 1670 register struct vnode *vp; 1671 struct file *fp; 1672 int error; 1673 1674 if (error = getvnode(p->p_fd, uap->fd, &fp)) 1675 return (error); 1676 vp = (struct vnode *)fp->f_data; 1677 VOP_LOCK(vp); 1678 error = VOP_FSYNC(vp, fp->f_cred, MNT_WAIT, p); 1679 VOP_UNLOCK(vp); 1680 return (error); 1681 } 1682 1683 /* 1684 * Rename files. Source and destination must either both be directories, 1685 * or both not be directories. If target is a directory, it must be empty. 1686 */ 1687 struct rename_args { 1688 char *from; 1689 char *to; 1690 }; 1691 /* ARGSUSED */ 1692 rename(p, uap, retval) 1693 struct proc *p; 1694 register struct rename_args *uap; 1695 int *retval; 1696 { 1697 register struct vnode *tvp, *fvp, *tdvp; 1698 struct nameidata fromnd, tond; 1699 int error; 1700 1701 NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_USERSPACE, 1702 uap->from, p); 1703 if (error = namei(&fromnd)) 1704 return (error); 1705 fvp = fromnd.ni_vp; 1706 NDINIT(&tond, RENAME, LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART, 1707 UIO_USERSPACE, uap->to, p); 1708 if (error = namei(&tond)) { 1709 VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); 1710 vrele(fromnd.ni_dvp); 1711 vrele(fvp); 1712 goto out1; 1713 } 1714 tdvp = tond.ni_dvp; 1715 tvp = tond.ni_vp; 1716 if (tvp != NULL) { 1717 if (fvp->v_type == VDIR && tvp->v_type != VDIR) { 1718 error = ENOTDIR; 1719 goto out; 1720 } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) { 1721 error = EISDIR; 1722 goto out; 1723 } 1724 } 1725 if (fvp == tdvp) 1726 error = EINVAL; 1727 /* 1728 * If source is the same as the destination (that is the 1729 * same inode number with the same name in the same directory), 1730 * then there is nothing to do. 1731 */ 1732 if (fvp == tvp && fromnd.ni_dvp == tdvp && 1733 fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen && 1734 !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr, 1735 fromnd.ni_cnd.cn_namelen)) 1736 error = -1; 1737 out: 1738 if (!error) { 1739 LEASE_CHECK(tdvp, p, p->p_ucred, LEASE_WRITE); 1740 if (fromnd.ni_dvp != tdvp) 1741 LEASE_CHECK(fromnd.ni_dvp, p, p->p_ucred, LEASE_WRITE); 1742 if (tvp) 1743 LEASE_CHECK(tvp, p, p->p_ucred, LEASE_WRITE); 1744 error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd, 1745 tond.ni_dvp, tond.ni_vp, &tond.ni_cnd); 1746 } else { 1747 VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd); 1748 if (tdvp == tvp) 1749 vrele(tdvp); 1750 else 1751 vput(tdvp); 1752 if (tvp) 1753 vput(tvp); 1754 VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd); 1755 vrele(fromnd.ni_dvp); 1756 vrele(fvp); 1757 } 1758 vrele(tond.ni_startdir); 1759 FREE(tond.ni_cnd.cn_pnbuf, M_NAMEI); 1760 out1: 1761 if (fromnd.ni_startdir) 1762 vrele(fromnd.ni_startdir); 1763 FREE(fromnd.ni_cnd.cn_pnbuf, M_NAMEI); 1764 if (error == -1) 1765 return (0); 1766 return (error); 1767 } 1768 1769 /* 1770 * Make a directory file. 1771 */ 1772 struct mkdir_args { 1773 char *path; 1774 int mode; 1775 }; 1776 /* ARGSUSED */ 1777 mkdir(p, uap, retval) 1778 struct proc *p; 1779 register struct mkdir_args *uap; 1780 int *retval; 1781 { 1782 register struct vnode *vp; 1783 struct vattr vattr; 1784 int error; 1785 struct nameidata nd; 1786 1787 NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, uap->path, p); 1788 if (error = namei(&nd)) 1789 return (error); 1790 vp = nd.ni_vp; 1791 if (vp != NULL) { 1792 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); 1793 if (nd.ni_dvp == vp) 1794 vrele(nd.ni_dvp); 1795 else 1796 vput(nd.ni_dvp); 1797 vrele(vp); 1798 return (EEXIST); 1799 } 1800 VATTR_NULL(&vattr); 1801 vattr.va_type = VDIR; 1802 vattr.va_mode = (uap->mode & ACCESSPERMS) &~ p->p_fd->fd_cmask; 1803 LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); 1804 error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr); 1805 if (!error) 1806 vput(nd.ni_vp); 1807 return (error); 1808 } 1809 1810 /* 1811 * Remove a directory file. 1812 */ 1813 struct rmdir_args { 1814 char *path; 1815 }; 1816 /* ARGSUSED */ 1817 rmdir(p, uap, retval) 1818 struct proc *p; 1819 struct rmdir_args *uap; 1820 int *retval; 1821 { 1822 register struct vnode *vp; 1823 int error; 1824 struct nameidata nd; 1825 1826 NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE, uap->path, p); 1827 if (error = namei(&nd)) 1828 return (error); 1829 vp = nd.ni_vp; 1830 if (vp->v_type != VDIR) { 1831 error = ENOTDIR; 1832 goto out; 1833 } 1834 /* 1835 * No rmdir "." please. 1836 */ 1837 if (nd.ni_dvp == vp) { 1838 error = EINVAL; 1839 goto out; 1840 } 1841 /* 1842 * The root of a mounted filesystem cannot be deleted. 1843 */ 1844 if (vp->v_flag & VROOT) 1845 error = EBUSY; 1846 out: 1847 if (!error) { 1848 LEASE_CHECK(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE); 1849 LEASE_CHECK(vp, p, p->p_ucred, LEASE_WRITE); 1850 error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd); 1851 } else { 1852 VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd); 1853 if (nd.ni_dvp == vp) 1854 vrele(nd.ni_dvp); 1855 else 1856 vput(nd.ni_dvp); 1857 vput(vp); 1858 } 1859 return (error); 1860 } 1861 1862 #if defined(COMPAT_43) || defined(COMPAT_HPUX) 1863 /* 1864 * Read a block of directory entries in a file system independent format. 1865 */ 1866 struct ogetdirentries_args { 1867 int fd; 1868 char *buf; 1869 u_int count; 1870 long *basep; 1871 }; 1872 ogetdirentries(p, uap, retval) 1873 struct proc *p; 1874 register struct ogetdirentries_args *uap; 1875 int *retval; 1876 { 1877 register struct vnode *vp; 1878 struct file *fp; 1879 struct uio auio, kuio; 1880 struct iovec aiov, kiov; 1881 struct dirent *dp, *edp; 1882 caddr_t dirbuf; 1883 int error, eofflag, readcnt; 1884 long loff; 1885 1886 if (error = getvnode(p->p_fd, uap->fd, &fp)) 1887 return (error); 1888 if ((fp->f_flag & FREAD) == 0) 1889 return (EBADF); 1890 vp = (struct vnode *)fp->f_data; 1891 unionread: 1892 if (vp->v_type != VDIR) 1893 return (EINVAL); 1894 aiov.iov_base = uap->buf; 1895 aiov.iov_len = uap->count; 1896 auio.uio_iov = &aiov; 1897 auio.uio_iovcnt = 1; 1898 auio.uio_rw = UIO_READ; 1899 auio.uio_segflg = UIO_USERSPACE; 1900 auio.uio_procp = p; 1901 auio.uio_resid = uap->count; 1902 VOP_LOCK(vp); 1903 loff = auio.uio_offset = fp->f_offset; 1904 # if (BYTE_ORDER != LITTLE_ENDIAN) 1905 if (vp->v_mount->mnt_maxsymlinklen <= 0) { 1906 error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, 1907 (u_long *)0, 0); 1908 fp->f_offset = auio.uio_offset; 1909 } else 1910 # endif 1911 { 1912 kuio = auio; 1913 kuio.uio_iov = &kiov; 1914 kuio.uio_segflg = UIO_SYSSPACE; 1915 kiov.iov_len = uap->count; 1916 MALLOC(dirbuf, caddr_t, uap->count, M_TEMP, M_WAITOK); 1917 kiov.iov_base = dirbuf; 1918 error = VOP_READDIR(vp, &kuio, fp->f_cred, &eofflag, 1919 (u_long *)0, 0); 1920 fp->f_offset = kuio.uio_offset; 1921 if (error == 0) { 1922 readcnt = uap->count - kuio.uio_resid; 1923 edp = (struct dirent *)&dirbuf[readcnt]; 1924 for (dp = (struct dirent *)dirbuf; dp < edp; ) { 1925 # if (BYTE_ORDER == LITTLE_ENDIAN) 1926 /* 1927 * The expected low byte of 1928 * dp->d_namlen is our dp->d_type. 1929 * The high MBZ byte of dp->d_namlen 1930 * is our dp->d_namlen. 1931 */ 1932 dp->d_type = dp->d_namlen; 1933 dp->d_namlen = 0; 1934 # else 1935 /* 1936 * The dp->d_type is the high byte 1937 * of the expected dp->d_namlen, 1938 * so must be zero'ed. 1939 */ 1940 dp->d_type = 0; 1941 # endif 1942 if (dp->d_reclen > 0) { 1943 dp = (struct dirent *) 1944 ((char *)dp + dp->d_reclen); 1945 } else { 1946 error = EIO; 1947 break; 1948 } 1949 } 1950 if (dp >= edp) 1951 error = uiomove(dirbuf, readcnt, &auio); 1952 } 1953 FREE(dirbuf, M_TEMP); 1954 } 1955 VOP_UNLOCK(vp); 1956 if (error) 1957 return (error); 1958 1959 #ifdef UNION 1960 { 1961 extern int (**union_vnodeop_p)(); 1962 extern struct vnode *union_lowervp __P((struct vnode *)); 1963 1964 if ((uap->count == auio.uio_resid) && 1965 (vp->v_op == union_vnodeop_p)) { 1966 struct vnode *lvp; 1967 1968 lvp = union_lowervp(vp); 1969 if (lvp != NULLVP) { 1970 VOP_LOCK(lvp); 1971 error = VOP_OPEN(lvp, FREAD, fp->f_cred, p); 1972 VOP_UNLOCK(lvp); 1973 1974 if (error) { 1975 vrele(lvp); 1976 return (error); 1977 } 1978 fp->f_data = (caddr_t) lvp; 1979 fp->f_offset = 0; 1980 error = vn_close(vp, FREAD, fp->f_cred, p); 1981 if (error) 1982 return (error); 1983 vp = lvp; 1984 goto unionread; 1985 } 1986 } 1987 } 1988 #endif /* UNION */ 1989 1990 if ((uap->count == auio.uio_resid) && 1991 (vp->v_flag & VROOT) && 1992 (vp->v_mount->mnt_flag & MNT_UNION)) { 1993 struct vnode *tvp = vp; 1994 vp = vp->v_mount->mnt_vnodecovered; 1995 VREF(vp); 1996 fp->f_data = (caddr_t) vp; 1997 fp->f_offset = 0; 1998 vrele(tvp); 1999 goto unionread; 2000 } 2001 error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); 2002 *retval = uap->count - auio.uio_resid; 2003 return (error); 2004 } 2005 #endif /* COMPAT_43 */ 2006 2007 /* 2008 * Read a block of directory entries in a file system independent format. 2009 */ 2010 struct getdirentries_args { 2011 int fd; 2012 char *buf; 2013 u_int count; 2014 long *basep; 2015 }; 2016 getdirentries(p, uap, retval) 2017 struct proc *p; 2018 register struct getdirentries_args *uap; 2019 int *retval; 2020 { 2021 register struct vnode *vp; 2022 struct file *fp; 2023 struct uio auio; 2024 struct iovec aiov; 2025 long loff; 2026 int error, eofflag; 2027 2028 if (error = getvnode(p->p_fd, uap->fd, &fp)) 2029 return (error); 2030 if ((fp->f_flag & FREAD) == 0) 2031 return (EBADF); 2032 vp = (struct vnode *)fp->f_data; 2033 unionread: 2034 if (vp->v_type != VDIR) 2035 return (EINVAL); 2036 aiov.iov_base = uap->buf; 2037 aiov.iov_len = uap->count; 2038 auio.uio_iov = &aiov; 2039 auio.uio_iovcnt = 1; 2040 auio.uio_rw = UIO_READ; 2041 auio.uio_segflg = UIO_USERSPACE; 2042 auio.uio_procp = p; 2043 auio.uio_resid = uap->count; 2044 VOP_LOCK(vp); 2045 loff = auio.uio_offset = fp->f_offset; 2046 error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, (u_long *)0, 0); 2047 fp->f_offset = auio.uio_offset; 2048 VOP_UNLOCK(vp); 2049 if (error) 2050 return (error); 2051 2052 #ifdef UNION 2053 { 2054 extern int (**union_vnodeop_p)(); 2055 extern struct vnode *union_lowervp __P((struct vnode *)); 2056 2057 if ((uap->count == auio.uio_resid) && 2058 (vp->v_op == union_vnodeop_p)) { 2059 struct vnode *lvp; 2060 2061 lvp = union_lowervp(vp); 2062 if (lvp != NULLVP) { 2063 VOP_LOCK(lvp); 2064 error = VOP_OPEN(lvp, FREAD, fp->f_cred, p); 2065 VOP_UNLOCK(lvp); 2066 2067 if (error) { 2068 vrele(lvp); 2069 return (error); 2070 } 2071 fp->f_data = (caddr_t) lvp; 2072 fp->f_offset = 0; 2073 error = vn_close(vp, FREAD, fp->f_cred, p); 2074 if (error) 2075 return (error); 2076 vp = lvp; 2077 goto unionread; 2078 } 2079 } 2080 } 2081 #endif /* UNION */ 2082 2083 if ((uap->count == auio.uio_resid) && 2084 (vp->v_flag & VROOT) && 2085 (vp->v_mount->mnt_flag & MNT_UNION)) { 2086 struct vnode *tvp = vp; 2087 vp = vp->v_mount->mnt_vnodecovered; 2088 VREF(vp); 2089 fp->f_data = (caddr_t) vp; 2090 fp->f_offset = 0; 2091 vrele(tvp); 2092 goto unionread; 2093 } 2094 error = copyout((caddr_t)&loff, (caddr_t)uap->basep, sizeof(long)); 2095 *retval = uap->count - auio.uio_resid; 2096 return (error); 2097 } 2098 2099 /* 2100 * Set the mode mask for creation of filesystem nodes. 2101 */ 2102 struct umask_args { 2103 int newmask; 2104 }; 2105 mode_t /* XXX */ 2106 umask(p, uap, retval) 2107 struct proc *p; 2108 struct umask_args *uap; 2109 int *retval; 2110 { 2111 register struct filedesc *fdp; 2112 2113 fdp = p->p_fd; 2114 *retval = fdp->fd_cmask; 2115 fdp->fd_cmask = uap->newmask & ALLPERMS; 2116 return (0); 2117 } 2118 2119 /* 2120 * Void all references to file by ripping underlying filesystem 2121 * away from vnode. 2122 */ 2123 struct revoke_args { 2124 char *path; 2125 }; 2126 /* ARGSUSED */ 2127 revoke(p, uap, retval) 2128 struct proc *p; 2129 register struct revoke_args *uap; 2130 int *retval; 2131 { 2132 register struct vnode *vp; 2133 struct vattr vattr; 2134 int error; 2135 struct nameidata nd; 2136 2137 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, p); 2138 if (error = namei(&nd)) 2139 return (error); 2140 vp = nd.ni_vp; 2141 if (vp->v_type != VCHR && vp->v_type != VBLK) { 2142 error = EINVAL; 2143 goto out; 2144 } 2145 if (error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) 2146 goto out; 2147 if (p->p_ucred->cr_uid != vattr.va_uid && 2148 (error = suser(p->p_ucred, &p->p_acflag))) 2149 goto out; 2150 if (vp->v_usecount > 1 || (vp->v_flag & VALIASED)) 2151 vgoneall(vp); 2152 out: 2153 vrele(vp); 2154 return (error); 2155 } 2156 2157 /* 2158 * Convert a user file descriptor to a kernel file entry. 2159 */ 2160 getvnode(fdp, fd, fpp) 2161 struct filedesc *fdp; 2162 struct file **fpp; 2163 int fd; 2164 { 2165 struct file *fp; 2166 2167 if ((u_int)fd >= fdp->fd_nfiles || 2168 (fp = fdp->fd_ofiles[fd]) == NULL) 2169 return (EBADF); 2170 if (fp->f_type != DTYPE_VNODE) 2171 return (EINVAL); 2172 *fpp = fp; 2173 return (0); 2174 } 2175
Indexes created Fri Sep 26 20:09:58 GMT 2025