kernfs_vnops.c revision 1.24
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 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)kernfs_vnops.c 8.6 (Berkeley) 2/10/94 37 * $Id: kernfs_vnops.c,v 1.24 1994/06/15 03:30:44 mycroft Exp $ 38 */ 39 40 /* 41 * Kernel parameter filesystem (/kern) 42 */ 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/vmmeter.h> 48 #include <sys/types.h> 49 #include <sys/time.h> 50 #include <sys/proc.h> 51 #include <sys/vnode.h> 52 #include <sys/malloc.h> 53 #include <sys/file.h> 54 #include <sys/stat.h> 55 #include <sys/mount.h> 56 #include <sys/namei.h> 57 #include <sys/buf.h> 58 #include <sys/dirent.h> 59 #include <miscfs/kernfs/kernfs.h> 60 61 #define KSTRING 256 /* Largest I/O available via this filesystem */ 62 #define UIO_MX 32 63 64 #define READ_MODE (S_IRUSR|S_IRGRP|S_IROTH) 65 #define WRITE_MODE (S_IWUSR|S_IRUSR|S_IRGRP|S_IROTH) 66 #define DIR_MODE (S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) 67 68 struct kern_target { 69 u_char kt_type; 70 u_char kt_namlen; 71 char *kt_name; 72 void *kt_data; 73 #define KTT_NULL 1 74 #define KTT_TIME 5 75 #define KTT_INT 17 76 #define KTT_STRING 31 77 #define KTT_HOSTNAME 47 78 #define KTT_AVENRUN 53 79 #define KTT_DEVICE 71 80 u_char kt_tag; 81 u_char kt_vtype; 82 mode_t kt_mode; 83 } kern_targets[] = { 84 /* NOTE: The name must be less than UIO_MX-16 chars in length */ 85 #define N(s) sizeof(s)-1, s 86 /* name data tag type ro/rw */ 87 { DT_DIR, N("."), 0, KTT_NULL, VDIR, DIR_MODE }, 88 { DT_DIR, N(".."), 0, KTT_NULL, VDIR, DIR_MODE }, 89 { DT_REG, N("boottime"), &boottime.tv_sec, KTT_INT, VREG, READ_MODE }, 90 { DT_REG, N("copyright"), copyright, KTT_STRING, VREG, READ_MODE }, 91 { DT_REG, N("hostname"), 0, KTT_HOSTNAME, VREG, WRITE_MODE }, 92 { DT_REG, N("hz"), &hz, KTT_INT, VREG, READ_MODE }, 93 { DT_REG, N("loadavg"), 0, KTT_AVENRUN, VREG, READ_MODE }, 94 { DT_REG, N("pagesize"), &cnt.v_page_size, KTT_INT, VREG, READ_MODE }, 95 { DT_REG, N("physmem"), &physmem, KTT_INT, VREG, READ_MODE }, 96 #if 0 97 { DT_DIR, N("root"), 0, KTT_NULL, VDIR, DIR_MODE }, 98 #endif 99 { DT_BLK, N("rootdev"), &rootdev, KTT_DEVICE, VBLK, READ_MODE }, 100 { DT_CHR, N("rrootdev"), &rrootdev, KTT_DEVICE, VCHR, READ_MODE }, 101 { DT_REG, N("time"), 0, KTT_TIME, VREG, READ_MODE }, 102 { DT_REG, N("version"), version, KTT_STRING, VREG, READ_MODE }, 103 #undef N 104 }; 105 static int nkern_targets = sizeof(kern_targets) / sizeof(kern_targets[0]); 106 107 static int 108 kernfs_xread(kt, buf, len, lenp) 109 struct kern_target *kt; 110 char *buf; 111 int len; 112 int *lenp; 113 { 114 115 switch (kt->kt_tag) { 116 case KTT_TIME: { 117 struct timeval tv; 118 microtime(&tv); 119 sprintf(buf, "%d %d\n", tv.tv_sec, tv.tv_usec); 120 break; 121 } 122 123 case KTT_INT: { 124 int *ip = kt->kt_data; 125 sprintf(buf, "%d\n", *ip); 126 break; 127 } 128 129 case KTT_STRING: { 130 char *cp = kt->kt_data; 131 int xlen = strlen(cp) + 1; 132 133 if (xlen >= len) 134 return (EINVAL); 135 136 bcopy(cp, buf, xlen); 137 break; 138 } 139 140 case KTT_HOSTNAME: { 141 char *cp = hostname; 142 int xlen = hostnamelen; 143 144 if (xlen >= (len-2)) 145 return (EINVAL); 146 147 bcopy(cp, buf, xlen); 148 buf[xlen] = '\n'; 149 buf[xlen+1] = '\0'; 150 break; 151 } 152 153 case KTT_AVENRUN: 154 sprintf(buf, "%ld %ld %ld %ld\n", 155 averunnable.ldavg[0], averunnable.ldavg[1], 156 averunnable.ldavg[2], averunnable.fscale); 157 break; 158 159 default: 160 return (EIO); 161 } 162 163 *lenp = strlen(buf); 164 return (0); 165 } 166 167 static int 168 kernfs_xwrite(kt, buf, len) 169 struct kern_target *kt; 170 char *buf; 171 int len; 172 { 173 174 switch (kt->kt_tag) { 175 case KTT_HOSTNAME: 176 if (buf[len-1] == '\n') 177 --len; 178 bcopy(buf, hostname, len); 179 hostname[len] = '\0'; 180 hostnamelen = len; 181 return (0); 182 183 default: 184 return (EIO); 185 } 186 } 187 188 189 /* 190 * vp is the current namei directory 191 * ndp is the name to locate in that directory... 192 */ 193 kernfs_lookup(ap) 194 struct vop_lookup_args /* { 195 struct vnode * a_dvp; 196 struct vnode ** a_vpp; 197 struct componentname * a_cnp; 198 } */ *ap; 199 { 200 struct componentname *cnp = ap->a_cnp; 201 struct vnode **vpp = ap->a_vpp; 202 struct vnode *dvp = ap->a_dvp; 203 char *pname = cnp->cn_nameptr; 204 struct kern_target *kt; 205 struct vnode *fvp; 206 int error, i; 207 208 #ifdef KERNFS_DIAGNOSTIC 209 printf("kernfs_lookup(%x)\n", ap); 210 printf("kernfs_lookup(dp = %x, vpp = %x, cnp = %x)\n", dvp, vpp, ap->a_cnp); 211 printf("kernfs_lookup(%s)\n", pname); 212 #endif 213 214 if (cnp->cn_namelen == 1 && *pname == '.') { 215 *vpp = dvp; 216 VREF(dvp); 217 /*VOP_LOCK(dvp);*/ 218 return (0); 219 } 220 221 #if 0 222 if (cnp->cn_namelen == 4 && bcmp(pname, "root", 4) == 0) { 223 *vpp = rootdir; 224 VREF(rootdir); 225 VOP_LOCK(rootdir); 226 return (0); 227 } 228 #endif 229 230 for (error = ENOENT, kt = kern_targets, i = 0; i < nkern_targets; 231 kt++, i++) { 232 if (cnp->cn_namelen == strlen(kt->kt_name) && 233 bcmp(kt->kt_name, pname, cnp->cn_namelen) == 0) { 234 error = 0; 235 break; 236 } 237 } 238 239 #ifdef KERNFS_DIAGNOSTIC 240 printf("kernfs_lookup: i = %d, error = %d\n", i, error); 241 #endif 242 243 if (error) 244 return (error); 245 246 if (kt->kt_tag == KTT_DEVICE) { 247 dev_t *dp = kt->kt_data; 248 loop: 249 if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) 250 return (ENOENT); 251 *vpp = fvp; 252 if (vget(fvp, 1)) 253 goto loop; 254 return (0); 255 } 256 257 #ifdef KERNFS_DIAGNOSTIC 258 printf("kernfs_lookup: allocate new vnode\n"); 259 #endif 260 if (error = getnewvnode(VT_KERNFS, dvp->v_mount, kernfs_vnodeop_p, 261 &fvp)) 262 return (error); 263 264 MALLOC(fvp->v_data, void *, sizeof(struct kernfs_node), M_TEMP, 265 M_WAITOK); 266 VTOKERN(fvp)->kf_kt = kt; 267 fvp->v_type = kt->kt_vtype; 268 *vpp = fvp; 269 270 #ifdef KERNFS_DIAGNOSTIC 271 printf("kernfs_lookup: newvp = %x\n", fvp); 272 #endif 273 return (0); 274 } 275 276 kernfs_open(ap) 277 struct vop_open_args /* { 278 struct vnode *a_vp; 279 int a_mode; 280 struct ucred *a_cred; 281 struct proc *a_p; 282 } */ *ap; 283 { 284 285 /* Only need to check access permissions. */ 286 return (0); 287 } 288 289 static int 290 kernfs_access(ap) 291 struct vop_access_args /* { 292 struct vnode *a_vp; 293 int a_mode; 294 struct ucred *a_cred; 295 struct proc *a_p; 296 } */ *ap; 297 { 298 register struct vnode *vp = ap->a_vp; 299 register struct ucred *cred = ap->a_cred; 300 mode_t amode = ap->a_mode; 301 mode_t fmode = 302 (vp->v_flag & VROOT) ? DIR_MODE : VTOKERN(vp)->kf_kt->kt_mode; 303 mode_t mask = 0; 304 register gid_t *gp; 305 int i; 306 307 /* Some files are simply not modifiable. */ 308 if ((amode & VWRITE) && (fmode & (S_IWUSR|S_IWGRP|S_IWOTH)) == 0) 309 return (EPERM); 310 311 /* Root can do anything else. */ 312 if (cred->cr_uid == 0) 313 return (0); 314 315 /* Check for group 0 (wheel) permissions. */ 316 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 317 if (*gp == 0) { 318 if (amode & VEXEC) 319 mask |= S_IXGRP; 320 if (amode & VREAD) 321 mask |= S_IRGRP; 322 if (amode & VWRITE) 323 mask |= S_IWGRP; 324 return ((fmode & mask) == mask ? 0 : EACCES); 325 } 326 327 /* Otherwise, check everyone else. */ 328 if (amode & VEXEC) 329 mask |= S_IXOTH; 330 if (amode & VREAD) 331 mask |= S_IROTH; 332 if (amode & VWRITE) 333 mask |= S_IWOTH; 334 return ((fmode & mask) == mask ? 0 : EACCES); 335 } 336 337 kernfs_getattr(ap) 338 struct vop_getattr_args /* { 339 struct vnode *a_vp; 340 struct vattr *a_vap; 341 struct ucred *a_cred; 342 struct proc *a_p; 343 } */ *ap; 344 { 345 struct vnode *vp = ap->a_vp; 346 struct vattr *vap = ap->a_vap; 347 int error = 0; 348 char strbuf[KSTRING]; 349 350 bzero((caddr_t) vap, sizeof(*vap)); 351 vattr_null(vap); 352 vap->va_uid = 0; 353 vap->va_gid = 0; 354 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 355 vap->va_size = 0; 356 vap->va_blocksize = DEV_BSIZE; 357 microtime(&vap->va_atime); 358 vap->va_mtime = vap->va_atime; 359 vap->va_ctime = vap->va_ctime; 360 vap->va_gen = 0; 361 vap->va_flags = 0; 362 vap->va_rdev = 0; 363 vap->va_bytes = 0; 364 365 if (vp->v_flag & VROOT) { 366 #ifdef KERNFS_DIAGNOSTIC 367 printf("kernfs_getattr: stat rootdir\n"); 368 #endif 369 vap->va_type = VDIR; 370 vap->va_mode = DIR_MODE; 371 vap->va_nlink = 2; 372 vap->va_fileid = 2; 373 vap->va_size = DEV_BSIZE; 374 } else { 375 struct kern_target *kt = VTOKERN(vp)->kf_kt; 376 int nbytes; 377 #ifdef KERNFS_DIAGNOSTIC 378 printf("kernfs_getattr: stat target %s\n", kt->kt_name); 379 #endif 380 vap->va_type = kt->kt_vtype; 381 vap->va_mode = kt->kt_mode; 382 vap->va_nlink = 1; 383 vap->va_fileid = 1 + (kt - kern_targets) / sizeof(*kt); 384 error = kernfs_xread(kt, strbuf, sizeof(strbuf), &nbytes); 385 vap->va_size = nbytes; 386 } 387 388 #ifdef KERNFS_DIAGNOSTIC 389 printf("kernfs_getattr: return error %d\n", error); 390 #endif 391 return (error); 392 } 393 394 kernfs_setattr(ap) 395 struct vop_setattr_args /* { 396 struct vnode *a_vp; 397 struct vattr *a_vap; 398 struct ucred *a_cred; 399 struct proc *a_p; 400 } */ *ap; 401 { 402 403 /* 404 * Silently ignore attribute changes. 405 * This allows for open with truncate to have no 406 * effect until some data is written. I want to 407 * do it this way because all writes are atomic. 408 */ 409 return (0); 410 } 411 412 static int 413 kernfs_read(ap) 414 struct vop_read_args /* { 415 struct vnode *a_vp; 416 struct uio *a_uio; 417 int a_ioflag; 418 struct ucred *a_cred; 419 } */ *ap; 420 { 421 struct vnode *vp = ap->a_vp; 422 struct uio *uio = ap->a_uio; 423 struct kern_target *kt; 424 char strbuf[KSTRING]; 425 int off = uio->uio_offset; 426 int error, len; 427 char *cp; 428 429 if (vp->v_type == VDIR) 430 return (EOPNOTSUPP); 431 432 kt = VTOKERN(vp)->kf_kt; 433 434 #ifdef KERNFS_DIAGNOSTIC 435 printf("kern_read %s\n", kt->kt_name); 436 #endif 437 438 len = 0; 439 if (error = kernfs_xread(kt, strbuf, sizeof(strbuf), &len)) 440 return (error); 441 if (len <= off) 442 return (0); 443 return (uiomove(&strbuf[off], len - off, uio)); 444 } 445 446 static int 447 kernfs_write(ap) 448 struct vop_write_args /* { 449 struct vnode *a_vp; 450 struct uio *a_uio; 451 int a_ioflag; 452 struct ucred *a_cred; 453 } */ *ap; 454 { 455 struct vnode *vp = ap->a_vp; 456 struct uio *uio = ap->a_uio; 457 struct kern_target *kt; 458 int error, xlen; 459 char strbuf[KSTRING]; 460 461 if (vp->v_type == VDIR) 462 return (EOPNOTSUPP); 463 464 kt = VTOKERN(vp)->kf_kt; 465 466 if (uio->uio_offset != 0) 467 return (EINVAL); 468 469 xlen = min(uio->uio_resid, KSTRING-1); 470 if (error = uiomove(strbuf, xlen, uio)) 471 return (error); 472 473 if (uio->uio_resid != 0) 474 return (EIO); 475 476 strbuf[xlen] = '\0'; 477 xlen = strlen(strbuf); 478 return (kernfs_xwrite(kt, strbuf, xlen)); 479 } 480 481 kernfs_readdir(ap) 482 struct vop_readdir_args /* { 483 struct vnode *a_vp; 484 struct uio *a_uio; 485 struct ucred *a_cred; 486 } */ *ap; 487 { 488 struct uio *uio = ap->a_uio; 489 register struct kern_target *kt; 490 struct dirent d; 491 int i; 492 int error; 493 494 if (ap->a_vp->v_type != VDIR) 495 return (ENOTDIR); 496 497 i = uio->uio_offset / UIO_MX; 498 error = 0; 499 for (kt = &kern_targets[i]; 500 uio->uio_resid >= UIO_MX && i < nkern_targets; kt++, i++) { 501 register struct dirent *dp = &d; 502 #ifdef KERNFS_DIAGNOSTIC 503 printf("kernfs_readdir: i = %d\n", i); 504 #endif 505 if (kt->kt_tag == KTT_DEVICE) { 506 register dev_t *dp = kt->kt_data; 507 struct vnode *fvp; 508 if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) 509 continue; 510 } 511 bzero((caddr_t)dp, UIO_MX); 512 dp->d_namlen = kt->kt_namlen; 513 bcopy(kt->kt_name, dp->d_name, kt->kt_namlen + 1); 514 #ifdef KERNFS_DIAGNOSTIC 515 printf("kernfs_readdir: name = %s, len = %d\n", 516 dp->d_name, dp->d_namlen); 517 #endif 518 /* 519 * Fill in the remaining fields 520 */ 521 dp->d_reclen = UIO_MX; 522 dp->d_fileno = i + 3; 523 dp->d_type = kt->kt_type; 524 /* 525 * And ship to userland 526 */ 527 if (error = uiomove((caddr_t)dp, UIO_MX, uio)) 528 break; 529 } 530 531 uio->uio_offset = i * UIO_MX; 532 533 return (error); 534 } 535 536 kernfs_inactive(ap) 537 struct vop_inactive_args /* { 538 struct vnode *a_vp; 539 } */ *ap; 540 { 541 struct vnode *vp = ap->a_vp; 542 543 #ifdef KERNFS_DIAGNOSTIC 544 printf("kernfs_inactive(%x)\n", vp); 545 #endif 546 /* 547 * Clear out the v_type field to avoid 548 * nasty things happening in vgone(). 549 */ 550 vp->v_type = VNON; 551 return (0); 552 } 553 554 kernfs_reclaim(ap) 555 struct vop_reclaim_args /* { 556 struct vnode *a_vp; 557 } */ *ap; 558 { 559 struct vnode *vp = ap->a_vp; 560 561 #ifdef KERNFS_DIAGNOSTIC 562 printf("kernfs_reclaim(%x)\n", vp); 563 #endif 564 if (vp->v_data) { 565 FREE(vp->v_data, M_TEMP); 566 vp->v_data = 0; 567 } 568 return (0); 569 } 570 571 /* 572 * Return POSIX pathconf information applicable to special devices. 573 */ 574 kernfs_pathconf(ap) 575 struct vop_pathconf_args /* { 576 struct vnode *a_vp; 577 int a_name; 578 int *a_retval; 579 } */ *ap; 580 { 581 582 switch (ap->a_name) { 583 case _PC_LINK_MAX: 584 *ap->a_retval = LINK_MAX; 585 return (0); 586 case _PC_MAX_CANON: 587 *ap->a_retval = MAX_CANON; 588 return (0); 589 case _PC_MAX_INPUT: 590 *ap->a_retval = MAX_INPUT; 591 return (0); 592 case _PC_PIPE_BUF: 593 *ap->a_retval = PIPE_BUF; 594 return (0); 595 case _PC_CHOWN_RESTRICTED: 596 *ap->a_retval = 1; 597 return (0); 598 case _PC_VDISABLE: 599 *ap->a_retval = _POSIX_VDISABLE; 600 return (0); 601 default: 602 return (EINVAL); 603 } 604 /* NOTREACHED */ 605 } 606 607 /* 608 * Print out the contents of a /dev/fd vnode. 609 */ 610 /* ARGSUSED */ 611 kernfs_print(ap) 612 struct vop_print_args /* { 613 struct vnode *a_vp; 614 } */ *ap; 615 { 616 617 printf("tag VT_KERNFS, kernfs vnode\n"); 618 return (0); 619 } 620 621 /*void*/ 622 kernfs_vfree(ap) 623 struct vop_vfree_args /* { 624 struct vnode *a_pvp; 625 ino_t a_ino; 626 int a_mode; 627 } */ *ap; 628 { 629 630 return (0); 631 } 632 633 /* 634 * /dev/fd vnode unsupported operation 635 */ 636 kernfs_enotsupp() 637 { 638 639 return (EOPNOTSUPP); 640 } 641 642 /* 643 * /dev/fd "should never get here" operation 644 */ 645 kernfs_badop() 646 { 647 648 panic("kernfs: bad op"); 649 /* NOTREACHED */ 650 } 651 652 /* 653 * kernfs vnode null operation 654 */ 655 kernfs_nullop() 656 { 657 658 return (0); 659 } 660 661 #define kernfs_create ((int (*) __P((struct vop_create_args *)))kernfs_enotsupp) 662 #define kernfs_mknod ((int (*) __P((struct vop_mknod_args *)))kernfs_enotsupp) 663 #define kernfs_close ((int (*) __P((struct vop_close_args *)))nullop) 664 #define kernfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))kernfs_enotsupp) 665 #define kernfs_select ((int (*) __P((struct vop_select_args *)))kernfs_enotsupp) 666 #define kernfs_mmap ((int (*) __P((struct vop_mmap_args *)))kernfs_enotsupp) 667 #define kernfs_fsync ((int (*) __P((struct vop_fsync_args *)))nullop) 668 #define kernfs_seek ((int (*) __P((struct vop_seek_args *)))nullop) 669 #define kernfs_remove ((int (*) __P((struct vop_remove_args *)))kernfs_enotsupp) 670 #define kernfs_link ((int (*) __P((struct vop_link_args *)))kernfs_enotsupp) 671 #define kernfs_rename ((int (*) __P((struct vop_rename_args *)))kernfs_enotsupp) 672 #define kernfs_mkdir ((int (*) __P((struct vop_mkdir_args *)))kernfs_enotsupp) 673 #define kernfs_rmdir ((int (*) __P((struct vop_rmdir_args *)))kernfs_enotsupp) 674 #define kernfs_symlink ((int (*) __P((struct vop_symlink_args *)))kernfs_enotsupp) 675 #define kernfs_readlink \ 676 ((int (*) __P((struct vop_readlink_args *)))kernfs_enotsupp) 677 #define kernfs_abortop ((int (*) __P((struct vop_abortop_args *)))nullop) 678 #define kernfs_lock ((int (*) __P((struct vop_lock_args *)))nullop) 679 #define kernfs_unlock ((int (*) __P((struct vop_unlock_args *)))nullop) 680 #define kernfs_bmap ((int (*) __P((struct vop_bmap_args *)))kernfs_badop) 681 #define kernfs_strategy ((int (*) __P((struct vop_strategy_args *)))kernfs_badop) 682 #define kernfs_islocked ((int (*) __P((struct vop_islocked_args *)))nullop) 683 #define kernfs_advlock ((int (*) __P((struct vop_advlock_args *)))kernfs_enotsupp) 684 #define kernfs_blkatoff \ 685 ((int (*) __P((struct vop_blkatoff_args *)))kernfs_enotsupp) 686 #define kernfs_valloc ((int(*) __P(( \ 687 struct vnode *pvp, \ 688 int mode, \ 689 struct ucred *cred, \ 690 struct vnode **vpp))) kernfs_enotsupp) 691 #define kernfs_truncate \ 692 ((int (*) __P((struct vop_truncate_args *)))kernfs_enotsupp) 693 #define kernfs_update ((int (*) __P((struct vop_update_args *)))kernfs_enotsupp) 694 #define kernfs_bwrite ((int (*) __P((struct vop_bwrite_args *)))kernfs_enotsupp) 695 696 int (**kernfs_vnodeop_p)(); 697 struct vnodeopv_entry_desc kernfs_vnodeop_entries[] = { 698 { &vop_default_desc, vn_default_error }, 699 { &vop_lookup_desc, kernfs_lookup }, /* lookup */ 700 { &vop_create_desc, kernfs_create }, /* create */ 701 { &vop_mknod_desc, kernfs_mknod }, /* mknod */ 702 { &vop_open_desc, kernfs_open }, /* open */ 703 { &vop_close_desc, kernfs_close }, /* close */ 704 { &vop_access_desc, kernfs_access }, /* access */ 705 { &vop_getattr_desc, kernfs_getattr }, /* getattr */ 706 { &vop_setattr_desc, kernfs_setattr }, /* setattr */ 707 { &vop_read_desc, kernfs_read }, /* read */ 708 { &vop_write_desc, kernfs_write }, /* write */ 709 { &vop_ioctl_desc, kernfs_ioctl }, /* ioctl */ 710 { &vop_select_desc, kernfs_select }, /* select */ 711 { &vop_mmap_desc, kernfs_mmap }, /* mmap */ 712 { &vop_fsync_desc, kernfs_fsync }, /* fsync */ 713 { &vop_seek_desc, kernfs_seek }, /* seek */ 714 { &vop_remove_desc, kernfs_remove }, /* remove */ 715 { &vop_link_desc, kernfs_link }, /* link */ 716 { &vop_rename_desc, kernfs_rename }, /* rename */ 717 { &vop_mkdir_desc, kernfs_mkdir }, /* mkdir */ 718 { &vop_rmdir_desc, kernfs_rmdir }, /* rmdir */ 719 { &vop_symlink_desc, kernfs_symlink }, /* symlink */ 720 { &vop_readdir_desc, kernfs_readdir }, /* readdir */ 721 { &vop_readlink_desc, kernfs_readlink },/* readlink */ 722 { &vop_abortop_desc, kernfs_abortop }, /* abortop */ 723 { &vop_inactive_desc, kernfs_inactive },/* inactive */ 724 { &vop_reclaim_desc, kernfs_reclaim }, /* reclaim */ 725 { &vop_lock_desc, kernfs_lock }, /* lock */ 726 { &vop_unlock_desc, kernfs_unlock }, /* unlock */ 727 { &vop_bmap_desc, kernfs_bmap }, /* bmap */ 728 { &vop_strategy_desc, kernfs_strategy },/* strategy */ 729 { &vop_print_desc, kernfs_print }, /* print */ 730 { &vop_islocked_desc, kernfs_islocked },/* islocked */ 731 { &vop_pathconf_desc, kernfs_pathconf },/* pathconf */ 732 { &vop_advlock_desc, kernfs_advlock }, /* advlock */ 733 { &vop_blkatoff_desc, kernfs_blkatoff },/* blkatoff */ 734 { &vop_valloc_desc, kernfs_valloc }, /* valloc */ 735 { &vop_vfree_desc, kernfs_vfree }, /* vfree */ 736 { &vop_truncate_desc, kernfs_truncate },/* truncate */ 737 { &vop_update_desc, kernfs_update }, /* update */ 738 { &vop_bwrite_desc, kernfs_bwrite }, /* bwrite */ 739 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 740 }; 741 struct vnodeopv_desc kernfs_vnodeop_opv_desc = 742 { &kernfs_vnodeop_p, kernfs_vnodeop_entries }; 743
Indexes created Wed Oct 01 19:09:53 GMT 2025