1 /* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software donated to Berkeley by 6 * Jan-Simon Pendry. 7 * 8 * %sccs.include.redist.c% 9 * 10 * @(#)kernfs_vnops.c 8.14 (Berkeley) 05/21/95 11 */ 12 13 /* 14 * Kernel parameter filesystem (/kern) 15 */ 16 17 #include <sys/param.h> 18 #include <sys/systm.h> 19 #include <sys/kernel.h> 20 #include <sys/vmmeter.h> 21 #include <sys/types.h> 22 #include <sys/time.h> 23 #include <sys/proc.h> 24 #include <sys/vnode.h> 25 #include <sys/malloc.h> 26 #include <sys/file.h> 27 #include <sys/stat.h> 28 #include <sys/mount.h> 29 #include <sys/namei.h> 30 #include <sys/buf.h> 31 #include <sys/dirent.h> 32 #include <miscfs/kernfs/kernfs.h> 33 34 #define KSTRING 256 /* Largest I/O available via this filesystem */ 35 #define UIO_MX 32 36 37 #define READ_MODE (S_IRUSR|S_IRGRP|S_IROTH) 38 #define WRITE_MODE (S_IWUSR|S_IRUSR|S_IRGRP|S_IROTH) 39 #define DIR_MODE (S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) 40 41 struct kern_target { 42 u_char kt_type; 43 u_char kt_namlen; 44 char *kt_name; 45 void *kt_data; 46 #define KTT_NULL 1 47 #define KTT_TIME 5 48 #define KTT_INT 17 49 #define KTT_STRING 31 50 #define KTT_HOSTNAME 47 51 #define KTT_AVENRUN 53 52 #define KTT_DEVICE 71 53 u_char kt_tag; 54 u_char kt_vtype; 55 mode_t kt_mode; 56 } kern_targets[] = { 57 /* NOTE: The name must be less than UIO_MX-16 chars in length */ 58 #define N(s) sizeof(s)-1, s 59 /* name data tag type ro/rw */ 60 { DT_DIR, N("."), 0, KTT_NULL, VDIR, DIR_MODE }, 61 { DT_DIR, N(".."), 0, KTT_NULL, VDIR, DIR_MODE }, 62 { DT_REG, N("boottime"), &boottime.tv_sec, KTT_INT, VREG, READ_MODE }, 63 { DT_REG, N("copyright"), copyright, KTT_STRING, VREG, READ_MODE }, 64 { DT_REG, N("hostname"), 0, KTT_HOSTNAME, VREG, WRITE_MODE }, 65 { DT_REG, N("hz"), &hz, KTT_INT, VREG, READ_MODE }, 66 { DT_REG, N("loadavg"), 0, KTT_AVENRUN, VREG, READ_MODE }, 67 { DT_REG, N("pagesize"), &cnt.v_page_size, KTT_INT, VREG, READ_MODE }, 68 { DT_REG, N("physmem"), &physmem, KTT_INT, VREG, READ_MODE }, 69 #if 0 70 { DT_DIR, N("root"), 0, KTT_NULL, VDIR, DIR_MODE }, 71 #endif 72 { DT_BLK, N("rootdev"), &rootdev, KTT_DEVICE, VBLK, READ_MODE }, 73 { DT_CHR, N("rrootdev"), &rrootdev, KTT_DEVICE, VCHR, READ_MODE }, 74 { DT_REG, N("time"), 0, KTT_TIME, VREG, READ_MODE }, 75 { DT_REG, N("version"), version, KTT_STRING, VREG, READ_MODE }, 76 #undef N 77 }; 78 static int nkern_targets = sizeof(kern_targets) / sizeof(kern_targets[0]); 79 80 static int 81 kernfs_xread(kt, buf, len, lenp) 82 struct kern_target *kt; 83 char *buf; 84 int len; 85 int *lenp; 86 { 87 88 switch (kt->kt_tag) { 89 case KTT_TIME: { 90 struct timeval tv; 91 microtime(&tv); 92 sprintf(buf, "%d %d\n", tv.tv_sec, tv.tv_usec); 93 break; 94 } 95 96 case KTT_INT: { 97 int *ip = kt->kt_data; 98 sprintf(buf, "%d\n", *ip); 99 break; 100 } 101 102 case KTT_STRING: { 103 char *cp = kt->kt_data; 104 int xlen = strlen(cp) + 1; 105 106 if (xlen >= len) 107 return (EINVAL); 108 109 bcopy(cp, buf, xlen); 110 break; 111 } 112 113 case KTT_HOSTNAME: { 114 char *cp = hostname; 115 int xlen = hostnamelen; 116 117 if (xlen >= (len-2)) 118 return (EINVAL); 119 120 bcopy(cp, buf, xlen); 121 buf[xlen] = '\n'; 122 buf[xlen+1] = '\0'; 123 break; 124 } 125 126 case KTT_AVENRUN: 127 sprintf(buf, "%ld %ld %ld %ld\n", 128 averunnable.ldavg[0], averunnable.ldavg[1], 129 averunnable.ldavg[2], averunnable.fscale); 130 break; 131 132 default: 133 return (EIO); 134 } 135 136 *lenp = strlen(buf); 137 return (0); 138 } 139 140 static int 141 kernfs_xwrite(kt, buf, len) 142 struct kern_target *kt; 143 char *buf; 144 int len; 145 { 146 147 switch (kt->kt_tag) { 148 case KTT_HOSTNAME: 149 if (buf[len-1] == '\n') 150 --len; 151 bcopy(buf, hostname, len); 152 hostname[len] = '\0'; 153 hostnamelen = len; 154 return (0); 155 156 default: 157 return (EIO); 158 } 159 } 160 161 162 /* 163 * vp is the current namei directory 164 * ndp is the name to locate in that directory... 165 */ 166 kernfs_lookup(ap) 167 struct vop_lookup_args /* { 168 struct vnode * a_dvp; 169 struct vnode ** a_vpp; 170 struct componentname * a_cnp; 171 } */ *ap; 172 { 173 struct componentname *cnp = ap->a_cnp; 174 struct vnode **vpp = ap->a_vpp; 175 struct vnode *dvp = ap->a_dvp; 176 char *pname = cnp->cn_nameptr; 177 struct proc *p = cnp->cn_proc; 178 struct kern_target *kt; 179 struct vnode *fvp; 180 int error, i; 181 182 #ifdef KERNFS_DIAGNOSTIC 183 printf("kernfs_lookup(%x)\n", ap); 184 printf("kernfs_lookup(dp = %x, vpp = %x, cnp = %x)\n", dvp, vpp, ap->a_cnp); 185 printf("kernfs_lookup(%s)\n", pname); 186 #endif 187 188 *vpp = NULLVP; 189 190 if (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME) 191 return (EROFS); 192 193 if (cnp->cn_namelen == 1 && *pname == '.') { 194 *vpp = dvp; 195 VREF(dvp); 196 /*VOP_LOCK(dvp);*/ 197 return (0); 198 } 199 200 #if 0 201 if (cnp->cn_namelen == 4 && bcmp(pname, "root", 4) == 0) { 202 *vpp = rootdir; 203 VREF(rootdir); 204 vn_lock(rootdir, LK_EXCLUSIVE | LK_RETRY, p) 205 return (0); 206 } 207 #endif 208 209 for (kt = kern_targets, i = 0; i < nkern_targets; kt++, i++) { 210 if (cnp->cn_namelen == kt->kt_namlen && 211 bcmp(kt->kt_name, pname, cnp->cn_namelen) == 0) 212 goto found; 213 } 214 215 #ifdef KERNFS_DIAGNOSTIC 216 printf("kernfs_lookup: i = %d, failed", i); 217 #endif 218 219 return (cnp->cn_nameiop == LOOKUP ? ENOENT : EROFS); 220 221 found: 222 if (kt->kt_tag == KTT_DEVICE) { 223 dev_t *dp = kt->kt_data; 224 loop: 225 if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) 226 return (ENOENT); 227 *vpp = fvp; 228 if (vget(fvp, LK_EXCLUSIVE, p)) 229 goto loop; 230 return (0); 231 } 232 233 #ifdef KERNFS_DIAGNOSTIC 234 printf("kernfs_lookup: allocate new vnode\n"); 235 #endif 236 if (error = getnewvnode(VT_KERNFS, dvp->v_mount, kernfs_vnodeop_p, 237 &fvp)) 238 return (error); 239 240 MALLOC(fvp->v_data, void *, sizeof(struct kernfs_node), M_TEMP, 241 M_WAITOK); 242 VTOKERN(fvp)->kf_kt = kt; 243 fvp->v_type = kt->kt_vtype; 244 *vpp = fvp; 245 246 #ifdef KERNFS_DIAGNOSTIC 247 printf("kernfs_lookup: newvp = %x\n", fvp); 248 #endif 249 return (0); 250 } 251 252 kernfs_open(ap) 253 struct vop_open_args /* { 254 struct vnode *a_vp; 255 int a_mode; 256 struct ucred *a_cred; 257 struct proc *a_p; 258 } */ *ap; 259 { 260 261 /* Only need to check access permissions. */ 262 return (0); 263 } 264 265 static int 266 kernfs_access(ap) 267 struct vop_access_args /* { 268 struct vnode *a_vp; 269 int a_mode; 270 struct ucred *a_cred; 271 struct proc *a_p; 272 } */ *ap; 273 { 274 register struct vnode *vp = ap->a_vp; 275 register struct ucred *cred = ap->a_cred; 276 mode_t amode = ap->a_mode; 277 mode_t fmode = 278 (vp->v_flag & VROOT) ? DIR_MODE : VTOKERN(vp)->kf_kt->kt_mode; 279 mode_t mask = 0; 280 register gid_t *gp; 281 int i; 282 283 /* Some files are simply not modifiable. */ 284 if ((amode & VWRITE) && (fmode & (S_IWUSR|S_IWGRP|S_IWOTH)) == 0) 285 return (EPERM); 286 287 /* Root can do anything else. */ 288 if (cred->cr_uid == 0) 289 return (0); 290 291 /* Check for group 0 (wheel) permissions. */ 292 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 293 if (*gp == 0) { 294 if (amode & VEXEC) 295 mask |= S_IXGRP; 296 if (amode & VREAD) 297 mask |= S_IRGRP; 298 if (amode & VWRITE) 299 mask |= S_IWGRP; 300 return ((fmode & mask) == mask ? 0 : EACCES); 301 } 302 303 /* Otherwise, check everyone else. */ 304 if (amode & VEXEC) 305 mask |= S_IXOTH; 306 if (amode & VREAD) 307 mask |= S_IROTH; 308 if (amode & VWRITE) 309 mask |= S_IWOTH; 310 return ((fmode & mask) == mask ? 0 : EACCES); 311 } 312 313 kernfs_getattr(ap) 314 struct vop_getattr_args /* { 315 struct vnode *a_vp; 316 struct vattr *a_vap; 317 struct ucred *a_cred; 318 struct proc *a_p; 319 } */ *ap; 320 { 321 struct vnode *vp = ap->a_vp; 322 struct vattr *vap = ap->a_vap; 323 struct timeval tv; 324 int error = 0; 325 char strbuf[KSTRING]; 326 327 bzero((caddr_t) vap, sizeof(*vap)); 328 vattr_null(vap); 329 vap->va_uid = 0; 330 vap->va_gid = 0; 331 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 332 vap->va_size = 0; 333 vap->va_blocksize = DEV_BSIZE; 334 microtime(&tv); 335 TIMEVAL_TO_TIMESPEC(&tv, &vap->va_atime); 336 vap->va_mtime = vap->va_atime; 337 vap->va_ctime = vap->va_ctime; 338 vap->va_gen = 0; 339 vap->va_flags = 0; 340 vap->va_rdev = 0; 341 vap->va_bytes = 0; 342 343 if (vp->v_flag & VROOT) { 344 #ifdef KERNFS_DIAGNOSTIC 345 printf("kernfs_getattr: stat rootdir\n"); 346 #endif 347 vap->va_type = VDIR; 348 vap->va_mode = DIR_MODE; 349 vap->va_nlink = 2; 350 vap->va_fileid = 2; 351 vap->va_size = DEV_BSIZE; 352 } else { 353 struct kern_target *kt = VTOKERN(vp)->kf_kt; 354 int nbytes; 355 #ifdef KERNFS_DIAGNOSTIC 356 printf("kernfs_getattr: stat target %s\n", kt->kt_name); 357 #endif 358 vap->va_type = kt->kt_vtype; 359 vap->va_mode = kt->kt_mode; 360 vap->va_nlink = 1; 361 vap->va_fileid = 1 + (kt - kern_targets) / sizeof(*kt); 362 error = kernfs_xread(kt, strbuf, sizeof(strbuf), &nbytes); 363 vap->va_size = nbytes; 364 } 365 366 #ifdef KERNFS_DIAGNOSTIC 367 printf("kernfs_getattr: return error %d\n", error); 368 #endif 369 return (error); 370 } 371 372 kernfs_setattr(ap) 373 struct vop_setattr_args /* { 374 struct vnode *a_vp; 375 struct vattr *a_vap; 376 struct ucred *a_cred; 377 struct proc *a_p; 378 } */ *ap; 379 { 380 381 /* 382 * Silently ignore attribute changes. 383 * This allows for open with truncate to have no 384 * effect until some data is written. I want to 385 * do it this way because all writes are atomic. 386 */ 387 return (0); 388 } 389 390 static int 391 kernfs_read(ap) 392 struct vop_read_args /* { 393 struct vnode *a_vp; 394 struct uio *a_uio; 395 int a_ioflag; 396 struct ucred *a_cred; 397 } */ *ap; 398 { 399 struct vnode *vp = ap->a_vp; 400 struct uio *uio = ap->a_uio; 401 struct kern_target *kt; 402 char strbuf[KSTRING]; 403 int off = uio->uio_offset; 404 int error, len; 405 char *cp; 406 407 if (vp->v_type == VDIR) 408 return (EOPNOTSUPP); 409 410 kt = VTOKERN(vp)->kf_kt; 411 412 #ifdef KERNFS_DIAGNOSTIC 413 printf("kern_read %s\n", kt->kt_name); 414 #endif 415 416 len = 0; 417 if (error = kernfs_xread(kt, strbuf, sizeof(strbuf), &len)) 418 return (error); 419 if (len <= off) 420 return (0); 421 return (uiomove(&strbuf[off], len - off, uio)); 422 } 423 424 static int 425 kernfs_write(ap) 426 struct vop_write_args /* { 427 struct vnode *a_vp; 428 struct uio *a_uio; 429 int a_ioflag; 430 struct ucred *a_cred; 431 } */ *ap; 432 { 433 struct vnode *vp = ap->a_vp; 434 struct uio *uio = ap->a_uio; 435 struct kern_target *kt; 436 int error, xlen; 437 char strbuf[KSTRING]; 438 439 if (vp->v_type == VDIR) 440 return (EOPNOTSUPP); 441 442 kt = VTOKERN(vp)->kf_kt; 443 444 if (uio->uio_offset != 0) 445 return (EINVAL); 446 447 xlen = min(uio->uio_resid, KSTRING-1); 448 if (error = uiomove(strbuf, xlen, uio)) 449 return (error); 450 451 if (uio->uio_resid != 0) 452 return (EIO); 453 454 strbuf[xlen] = '\0'; 455 xlen = strlen(strbuf); 456 return (kernfs_xwrite(kt, strbuf, xlen)); 457 } 458 459 kernfs_readdir(ap) 460 struct vop_readdir_args /* { 461 struct vnode *a_vp; 462 struct uio *a_uio; 463 struct ucred *a_cred; 464 int *a_eofflag; 465 u_long *a_cookies; 466 int a_ncookies; 467 } */ *ap; 468 { 469 int error, i; 470 struct uio *uio = ap->a_uio; 471 struct kern_target *kt; 472 struct dirent d; 473 474 if (ap->a_vp->v_type != VDIR) 475 return (ENOTDIR); 476 477 /* 478 * We don't allow exporting kernfs mounts, and currently local 479 * requests do not need cookies. 480 */ 481 if (ap->a_ncookies != NULL) 482 panic("kernfs_readdir: not hungry"); 483 484 i = uio->uio_offset / UIO_MX; 485 error = 0; 486 for (kt = &kern_targets[i]; 487 uio->uio_resid >= UIO_MX && i < nkern_targets; kt++, i++) { 488 struct dirent *dp = &d; 489 #ifdef KERNFS_DIAGNOSTIC 490 printf("kernfs_readdir: i = %d\n", i); 491 #endif 492 493 if (kt->kt_tag == KTT_DEVICE) { 494 dev_t *dp = kt->kt_data; 495 struct vnode *fvp; 496 497 if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) 498 continue; 499 } 500 501 bzero((caddr_t)dp, UIO_MX); 502 dp->d_namlen = kt->kt_namlen; 503 bcopy(kt->kt_name, dp->d_name, kt->kt_namlen+1); 504 505 #ifdef KERNFS_DIAGNOSTIC 506 printf("kernfs_readdir: name = %s, len = %d\n", 507 dp->d_name, dp->d_namlen); 508 #endif 509 /* 510 * Fill in the remaining fields 511 */ 512 dp->d_reclen = UIO_MX; 513 dp->d_fileno = i + 3; 514 dp->d_type = kt->kt_type; 515 /* 516 * And ship to userland 517 */ 518 if (error = uiomove((caddr_t)dp, UIO_MX, uio)) 519 break; 520 } 521 522 uio->uio_offset = i * UIO_MX; 523 524 return (error); 525 } 526 527 kernfs_inactive(ap) 528 struct vop_inactive_args /* { 529 struct vnode *a_vp; 530 struct proc *a_p; 531 } */ *ap; 532 { 533 struct vnode *vp = ap->a_vp; 534 535 #ifdef KERNFS_DIAGNOSTIC 536 printf("kernfs_inactive(%x)\n", vp); 537 #endif 538 /* 539 * Clear out the v_type field to avoid 540 * nasty things happening in vgone(). 541 */ 542 VOP_UNLOCK(vp, 0, ap->a_p); 543 vp->v_type = VNON; 544 return (0); 545 } 546 547 kernfs_reclaim(ap) 548 struct vop_reclaim_args /* { 549 struct vnode *a_vp; 550 } */ *ap; 551 { 552 struct vnode *vp = ap->a_vp; 553 554 #ifdef KERNFS_DIAGNOSTIC 555 printf("kernfs_reclaim(%x)\n", vp); 556 #endif 557 if (vp->v_data) { 558 FREE(vp->v_data, M_TEMP); 559 vp->v_data = 0; 560 } 561 return (0); 562 } 563 564 /* 565 * Return POSIX pathconf information applicable to special devices. 566 */ 567 kernfs_pathconf(ap) 568 struct vop_pathconf_args /* { 569 struct vnode *a_vp; 570 int a_name; 571 int *a_retval; 572 } */ *ap; 573 { 574 575 switch (ap->a_name) { 576 case _PC_LINK_MAX: 577 *ap->a_retval = LINK_MAX; 578 return (0); 579 case _PC_MAX_CANON: 580 *ap->a_retval = MAX_CANON; 581 return (0); 582 case _PC_MAX_INPUT: 583 *ap->a_retval = MAX_INPUT; 584 return (0); 585 case _PC_PIPE_BUF: 586 *ap->a_retval = PIPE_BUF; 587 return (0); 588 case _PC_CHOWN_RESTRICTED: 589 *ap->a_retval = 1; 590 return (0); 591 case _PC_VDISABLE: 592 *ap->a_retval = _POSIX_VDISABLE; 593 return (0); 594 default: 595 return (EINVAL); 596 } 597 /* NOTREACHED */ 598 } 599 600 /* 601 * Print out the contents of a /dev/fd vnode. 602 */ 603 /* ARGSUSED */ 604 kernfs_print(ap) 605 struct vop_print_args /* { 606 struct vnode *a_vp; 607 } */ *ap; 608 { 609 610 printf("tag VT_KERNFS, kernfs vnode\n"); 611 return (0); 612 } 613 614 /*void*/ 615 kernfs_vfree(ap) 616 struct vop_vfree_args /* { 617 struct vnode *a_pvp; 618 ino_t a_ino; 619 int a_mode; 620 } */ *ap; 621 { 622 623 return (0); 624 } 625 626 /* 627 * /dev/fd "should never get here" operation 628 */ 629 kernfs_badop() 630 { 631 632 panic("kernfs: bad op"); 633 /* NOTREACHED */ 634 } 635 636 /* 637 * kernfs vnode null operation 638 */ 639 kernfs_nullop() 640 { 641 642 return (0); 643 } 644 645 #define kernfs_create ((int (*) __P((struct vop_create_args *)))eopnotsupp) 646 #define kernfs_mknod ((int (*) __P((struct vop_mknod_args *)))eopnotsupp) 647 #define kernfs_close ((int (*) __P((struct vop_close_args *)))nullop) 648 #define kernfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))eopnotsupp) 649 #define kernfs_select ((int (*) __P((struct vop_select_args *)))eopnotsupp) 650 #define kernfs_revoke vop_revoke 651 #define kernfs_mmap ((int (*) __P((struct vop_mmap_args *)))eopnotsupp) 652 #define kernfs_fsync ((int (*) __P((struct vop_fsync_args *)))nullop) 653 #define kernfs_seek ((int (*) __P((struct vop_seek_args *)))nullop) 654 #define kernfs_remove ((int (*) __P((struct vop_remove_args *)))eopnotsupp) 655 #define kernfs_link ((int (*) __P((struct vop_link_args *)))eopnotsupp) 656 #define kernfs_rename ((int (*) __P((struct vop_rename_args *)))eopnotsupp) 657 #define kernfs_mkdir ((int (*) __P((struct vop_mkdir_args *)))eopnotsupp) 658 #define kernfs_rmdir ((int (*) __P((struct vop_rmdir_args *)))eopnotsupp) 659 #define kernfs_symlink ((int (*) __P((struct vop_symlink_args *)))eopnotsupp) 660 #define kernfs_readlink ((int (*) __P((struct vop_readlink_args *)))eopnotsupp) 661 #define kernfs_abortop ((int (*) __P((struct vop_abortop_args *)))nullop) 662 #define kernfs_lock ((int (*) __P((struct vop_lock_args *)))vop_nolock) 663 #define kernfs_unlock ((int (*) __P((struct vop_unlock_args *)))vop_nounlock) 664 #define kernfs_bmap ((int (*) __P((struct vop_bmap_args *)))kernfs_badop) 665 #define kernfs_strategy \ 666 ((int (*) __P((struct vop_strategy_args *)))kernfs_badop) 667 #define kernfs_islocked \ 668 ((int (*) __P((struct vop_islocked_args *)))vop_noislocked) 669 #define kernfs_advlock ((int (*) __P((struct vop_advlock_args *)))eopnotsupp) 670 #define kernfs_blkatoff ((int (*) __P((struct vop_blkatoff_args *)))eopnotsupp) 671 #define kernfs_valloc ((int(*) __P(( \ 672 struct vnode *pvp, \ 673 int mode, \ 674 struct ucred *cred, \ 675 struct vnode **vpp))) eopnotsupp) 676 #define kernfs_truncate ((int (*) __P((struct vop_truncate_args *)))eopnotsupp) 677 #define kernfs_update ((int (*) __P((struct vop_update_args *)))eopnotsupp) 678 #define kernfs_bwrite ((int (*) __P((struct vop_bwrite_args *)))eopnotsupp) 679 680 int (**kernfs_vnodeop_p)(); 681 struct vnodeopv_entry_desc kernfs_vnodeop_entries[] = { 682 { &vop_default_desc, vn_default_error }, 683 { &vop_lookup_desc, kernfs_lookup }, /* lookup */ 684 { &vop_create_desc, kernfs_create }, /* create */ 685 { &vop_mknod_desc, kernfs_mknod }, /* mknod */ 686 { &vop_open_desc, kernfs_open }, /* open */ 687 { &vop_close_desc, kernfs_close }, /* close */ 688 { &vop_access_desc, kernfs_access }, /* access */ 689 { &vop_getattr_desc, kernfs_getattr }, /* getattr */ 690 { &vop_setattr_desc, kernfs_setattr }, /* setattr */ 691 { &vop_read_desc, kernfs_read }, /* read */ 692 { &vop_write_desc, kernfs_write }, /* write */ 693 { &vop_ioctl_desc, kernfs_ioctl }, /* ioctl */ 694 { &vop_select_desc, kernfs_select }, /* select */ 695 { &vop_revoke_desc, kernfs_revoke }, /* revoke */ 696 { &vop_mmap_desc, kernfs_mmap }, /* mmap */ 697 { &vop_fsync_desc, kernfs_fsync }, /* fsync */ 698 { &vop_seek_desc, kernfs_seek }, /* seek */ 699 { &vop_remove_desc, kernfs_remove }, /* remove */ 700 { &vop_link_desc, kernfs_link }, /* link */ 701 { &vop_rename_desc, kernfs_rename }, /* rename */ 702 { &vop_mkdir_desc, kernfs_mkdir }, /* mkdir */ 703 { &vop_rmdir_desc, kernfs_rmdir }, /* rmdir */ 704 { &vop_symlink_desc, kernfs_symlink }, /* symlink */ 705 { &vop_readdir_desc, kernfs_readdir }, /* readdir */ 706 { &vop_readlink_desc, kernfs_readlink },/* readlink */ 707 { &vop_abortop_desc, kernfs_abortop }, /* abortop */ 708 { &vop_inactive_desc, kernfs_inactive },/* inactive */ 709 { &vop_reclaim_desc, kernfs_reclaim }, /* reclaim */ 710 { &vop_lock_desc, kernfs_lock }, /* lock */ 711 { &vop_unlock_desc, kernfs_unlock }, /* unlock */ 712 { &vop_bmap_desc, kernfs_bmap }, /* bmap */ 713 { &vop_strategy_desc, kernfs_strategy },/* strategy */ 714 { &vop_print_desc, kernfs_print }, /* print */ 715 { &vop_islocked_desc, kernfs_islocked },/* islocked */ 716 { &vop_pathconf_desc, kernfs_pathconf },/* pathconf */ 717 { &vop_advlock_desc, kernfs_advlock }, /* advlock */ 718 { &vop_blkatoff_desc, kernfs_blkatoff },/* blkatoff */ 719 { &vop_valloc_desc, kernfs_valloc }, /* valloc */ 720 { &vop_vfree_desc, kernfs_vfree }, /* vfree */ 721 { &vop_truncate_desc, kernfs_truncate },/* truncate */ 722 { &vop_update_desc, kernfs_update }, /* update */ 723 { &vop_bwrite_desc, kernfs_bwrite }, /* bwrite */ 724 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 725 }; 726 struct vnodeopv_desc kernfs_vnodeop_opv_desc = 727 { &kernfs_vnodeop_p, kernfs_vnodeop_entries }; 728