kernfs_vnops.c revision 1.31
1 /* $NetBSD: kernfs_vnops.c,v 1.31 1994/12/01 10:16:53 mycroft Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software donated to Berkeley by 8 * Jan-Simon Pendry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)kernfs_vnops.c 8.9 (Berkeley) 6/15/94 39 */ 40 41 /* 42 * Kernel parameter filesystem (/kern) 43 */ 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/vmmeter.h> 49 #include <sys/types.h> 50 #include <sys/time.h> 51 #include <sys/proc.h> 52 #include <sys/vnode.h> 53 #include <sys/malloc.h> 54 #include <sys/file.h> 55 #include <sys/stat.h> 56 #include <sys/mount.h> 57 #include <sys/namei.h> 58 #include <sys/buf.h> 59 #include <sys/dirent.h> 60 #include <sys/msgbuf.h> 61 #include <miscfs/kernfs/kernfs.h> 62 63 #define KSTRING 256 /* Largest I/O available via this filesystem */ 64 #define UIO_MX 32 65 66 #define READ_MODE (S_IRUSR|S_IRGRP|S_IROTH) 67 #define WRITE_MODE (S_IWUSR|S_IRUSR|S_IRGRP|S_IROTH) 68 #define DIR_MODE (S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) 69 70 struct kern_target { 71 u_char kt_type; 72 u_char kt_namlen; 73 char *kt_name; 74 void *kt_data; 75 #define KTT_NULL 1 76 #define KTT_TIME 5 77 #define KTT_INT 17 78 #define KTT_STRING 31 79 #define KTT_HOSTNAME 47 80 #define KTT_AVENRUN 53 81 #define KTT_DEVICE 71 82 #define KTT_MSGBUF 89 83 u_char kt_tag; 84 u_char kt_vtype; 85 mode_t kt_mode; 86 } kern_targets[] = { 87 /* NOTE: The name must be less than UIO_MX-16 chars in length */ 88 #define N(s) sizeof(s)-1, s 89 /* name data tag type ro/rw */ 90 { DT_DIR, N("."), 0, KTT_NULL, VDIR, DIR_MODE }, 91 { DT_DIR, N(".."), 0, KTT_NULL, VDIR, DIR_MODE }, 92 { DT_REG, N("boottime"), &boottime.tv_sec, KTT_INT, VREG, READ_MODE }, 93 { DT_REG, N("copyright"), copyright, KTT_STRING, VREG, READ_MODE }, 94 { DT_REG, N("hostname"), 0, KTT_HOSTNAME, VREG, WRITE_MODE }, 95 { DT_REG, N("hz"), &hz, KTT_INT, VREG, READ_MODE }, 96 { DT_REG, N("loadavg"), 0, KTT_AVENRUN, VREG, READ_MODE }, 97 { DT_REG, N("msgbuf"), 0, KTT_MSGBUF, VREG, READ_MODE }, 98 { DT_REG, N("pagesize"), &cnt.v_page_size, KTT_INT, VREG, READ_MODE }, 99 { DT_REG, N("physmem"), &physmem, KTT_INT, VREG, READ_MODE }, 100 #if 0 101 { DT_DIR, N("root"), 0, KTT_NULL, VDIR, DIR_MODE }, 102 #endif 103 { DT_BLK, N("rootdev"), &rootdev, KTT_DEVICE, VBLK, READ_MODE }, 104 { DT_CHR, N("rrootdev"), &rrootdev, KTT_DEVICE, VCHR, READ_MODE }, 105 { DT_REG, N("time"), 0, KTT_TIME, VREG, READ_MODE }, 106 { DT_REG, N("version"), version, KTT_STRING, VREG, READ_MODE }, 107 #undef N 108 }; 109 static int nkern_targets = sizeof(kern_targets) / sizeof(kern_targets[0]); 110 111 int 112 kernfs_xread(kt, off, bufp, len) 113 struct kern_target *kt; 114 int off; 115 char **bufp; 116 int len; 117 { 118 119 switch (kt->kt_tag) { 120 case KTT_TIME: { 121 struct timeval tv; 122 123 microtime(&tv); 124 sprintf(*bufp, "%d %d\n", tv.tv_sec, tv.tv_usec); 125 break; 126 } 127 128 case KTT_INT: { 129 int *ip = kt->kt_data; 130 131 sprintf(*bufp, "%d\n", *ip); 132 break; 133 } 134 135 case KTT_STRING: { 136 char *cp = kt->kt_data; 137 138 *bufp = cp; 139 break; 140 } 141 142 case KTT_MSGBUF: { 143 extern struct msgbuf *msgbufp; 144 long n; 145 146 if (off >= MSG_BSIZE) 147 return (0); 148 n = msgbufp->msg_bufx + off; 149 if (n >= MSG_BSIZE) 150 n -= MSG_BSIZE; 151 len = min(MSG_BSIZE - n, MSG_BSIZE - off); 152 *bufp = msgbufp->msg_bufc + n; 153 return (len); 154 } 155 156 case KTT_HOSTNAME: { 157 char *cp = hostname; 158 int xlen = hostnamelen; 159 160 if (xlen >= (len-2)) 161 return (EINVAL); 162 163 bcopy(cp, *bufp, xlen); 164 (*bufp)[xlen] = '\n'; 165 (*bufp)[xlen+1] = '\0'; 166 break; 167 } 168 169 case KTT_AVENRUN: 170 averunnable.fscale = FSCALE; 171 sprintf(*bufp, "%ld %ld %ld %ld\n", 172 averunnable.ldavg[0], averunnable.ldavg[1], 173 averunnable.ldavg[2], averunnable.fscale); 174 break; 175 176 default: 177 return (0); 178 } 179 180 len = strlen(*bufp); 181 if (len <= off) 182 return (0); 183 *bufp += off; 184 return (len - off); 185 } 186 187 int 188 kernfs_xwrite(kt, buf, len) 189 struct kern_target *kt; 190 char *buf; 191 int len; 192 { 193 194 switch (kt->kt_tag) { 195 case KTT_HOSTNAME: 196 if (buf[len-1] == '\n') 197 --len; 198 bcopy(buf, hostname, len); 199 hostname[len] = '\0'; 200 hostnamelen = len; 201 return (0); 202 203 default: 204 return (EIO); 205 } 206 } 207 208 209 /* 210 * vp is the current namei directory 211 * ndp is the name to locate in that directory... 212 */ 213 kernfs_lookup(ap) 214 struct vop_lookup_args /* { 215 struct vnode * a_dvp; 216 struct vnode ** a_vpp; 217 struct componentname * a_cnp; 218 } */ *ap; 219 { 220 struct componentname *cnp = ap->a_cnp; 221 struct vnode **vpp = ap->a_vpp; 222 struct vnode *dvp = ap->a_dvp; 223 char *pname = cnp->cn_nameptr; 224 struct kern_target *kt; 225 struct vnode *fvp; 226 int error, i; 227 228 #ifdef KERNFS_DIAGNOSTIC 229 printf("kernfs_lookup(%x)\n", ap); 230 printf("kernfs_lookup(dp = %x, vpp = %x, cnp = %x)\n", dvp, vpp, ap->a_cnp); 231 printf("kernfs_lookup(%s)\n", pname); 232 #endif 233 234 if (cnp->cn_namelen == 1 && *pname == '.') { 235 *vpp = dvp; 236 VREF(dvp); 237 /*VOP_LOCK(dvp);*/ 238 return (0); 239 } 240 241 #if 0 242 if (cnp->cn_namelen == 4 && bcmp(pname, "root", 4) == 0) { 243 *vpp = rootdir; 244 VREF(rootdir); 245 VOP_LOCK(rootdir); 246 return (0); 247 } 248 #endif 249 250 *vpp = NULLVP; 251 252 for (error = ENOENT, kt = kern_targets, i = 0; i < nkern_targets; 253 kt++, i++) { 254 if (cnp->cn_namelen == kt->kt_namlen && 255 bcmp(kt->kt_name, pname, cnp->cn_namelen) == 0) { 256 error = 0; 257 break; 258 } 259 } 260 261 #ifdef KERNFS_DIAGNOSTIC 262 printf("kernfs_lookup: i = %d, error = %d\n", i, error); 263 #endif 264 265 if (error) 266 return (error); 267 268 if (kt->kt_tag == KTT_DEVICE) { 269 dev_t *dp = kt->kt_data; 270 loop: 271 if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) 272 return (ENOENT); 273 *vpp = fvp; 274 if (vget(fvp, 1)) 275 goto loop; 276 return (0); 277 } 278 279 #ifdef KERNFS_DIAGNOSTIC 280 printf("kernfs_lookup: allocate new vnode\n"); 281 #endif 282 if (error = getnewvnode(VT_KERNFS, dvp->v_mount, kernfs_vnodeop_p, 283 &fvp)) 284 return (error); 285 286 MALLOC(fvp->v_data, void *, sizeof(struct kernfs_node), M_TEMP, 287 M_WAITOK); 288 VTOKERN(fvp)->kf_kt = kt; 289 fvp->v_type = kt->kt_vtype; 290 *vpp = fvp; 291 292 #ifdef KERNFS_DIAGNOSTIC 293 printf("kernfs_lookup: newvp = %x\n", fvp); 294 #endif 295 return (0); 296 } 297 298 kernfs_open(ap) 299 struct vop_open_args /* { 300 struct vnode *a_vp; 301 int a_mode; 302 struct ucred *a_cred; 303 struct proc *a_p; 304 struct file *a_fp; 305 } */ *ap; 306 { 307 308 /* Only need to check access permissions. */ 309 return (0); 310 } 311 312 int 313 kernfs_access(ap) 314 struct vop_access_args /* { 315 struct vnode *a_vp; 316 int a_mode; 317 struct ucred *a_cred; 318 struct proc *a_p; 319 } */ *ap; 320 { 321 struct vnode *vp = ap->a_vp; 322 struct ucred *cred = ap->a_cred; 323 mode_t amode = ap->a_mode; 324 mode_t fmode = 325 (vp->v_flag & VROOT) ? DIR_MODE : VTOKERN(vp)->kf_kt->kt_mode; 326 mode_t mask = 0; 327 gid_t *gp; 328 int i; 329 330 /* Some files are simply not modifiable. */ 331 if ((amode & VWRITE) && (fmode & (S_IWUSR|S_IWGRP|S_IWOTH)) == 0) 332 return (EPERM); 333 334 /* Root can do anything else. */ 335 if (cred->cr_uid == 0) 336 return (0); 337 338 /* Check for group 0 (wheel) permissions. */ 339 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 340 if (*gp == 0) { 341 if (amode & VEXEC) 342 mask |= S_IXGRP; 343 if (amode & VREAD) 344 mask |= S_IRGRP; 345 if (amode & VWRITE) 346 mask |= S_IWGRP; 347 return ((fmode & mask) == mask ? 0 : EACCES); 348 } 349 350 /* Otherwise, check everyone else. */ 351 if (amode & VEXEC) 352 mask |= S_IXOTH; 353 if (amode & VREAD) 354 mask |= S_IROTH; 355 if (amode & VWRITE) 356 mask |= S_IWOTH; 357 return ((fmode & mask) == mask ? 0 : EACCES); 358 } 359 360 kernfs_getattr(ap) 361 struct vop_getattr_args /* { 362 struct vnode *a_vp; 363 struct vattr *a_vap; 364 struct ucred *a_cred; 365 struct proc *a_p; 366 } */ *ap; 367 { 368 struct vnode *vp = ap->a_vp; 369 struct vattr *vap = ap->a_vap; 370 int error = 0; 371 char strbuf[KSTRING], *buf; 372 373 bzero((caddr_t) vap, sizeof(*vap)); 374 vattr_null(vap); 375 vap->va_uid = 0; 376 vap->va_gid = 0; 377 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 378 vap->va_size = 0; 379 vap->va_blocksize = DEV_BSIZE; 380 microtime(&vap->va_atime); 381 vap->va_mtime = vap->va_atime; 382 vap->va_ctime = vap->va_ctime; 383 vap->va_gen = 0; 384 vap->va_flags = 0; 385 vap->va_rdev = 0; 386 vap->va_bytes = 0; 387 388 if (vp->v_flag & VROOT) { 389 #ifdef KERNFS_DIAGNOSTIC 390 printf("kernfs_getattr: stat rootdir\n"); 391 #endif 392 vap->va_type = VDIR; 393 vap->va_mode = DIR_MODE; 394 vap->va_nlink = 2; 395 vap->va_fileid = 2; 396 vap->va_size = DEV_BSIZE; 397 } else { 398 struct kern_target *kt = VTOKERN(vp)->kf_kt; 399 int nbytes, total; 400 #ifdef KERNFS_DIAGNOSTIC 401 printf("kernfs_getattr: stat target %s\n", kt->kt_name); 402 #endif 403 vap->va_type = kt->kt_vtype; 404 vap->va_mode = kt->kt_mode; 405 vap->va_nlink = 1; 406 vap->va_fileid = 1 + (kt - kern_targets) / sizeof(*kt); 407 total = 0; 408 while (buf = strbuf, 409 nbytes = kernfs_xread(kt, total, &buf, sizeof(strbuf))) 410 total += nbytes; 411 vap->va_size = total; 412 } 413 414 #ifdef KERNFS_DIAGNOSTIC 415 printf("kernfs_getattr: return error %d\n", error); 416 #endif 417 return (error); 418 } 419 420 kernfs_setattr(ap) 421 struct vop_setattr_args /* { 422 struct vnode *a_vp; 423 struct vattr *a_vap; 424 struct ucred *a_cred; 425 struct proc *a_p; 426 } */ *ap; 427 { 428 429 /* 430 * Silently ignore attribute changes. 431 * This allows for open with truncate to have no 432 * effect until some data is written. I want to 433 * do it this way because all writes are atomic. 434 */ 435 return (0); 436 } 437 438 int 439 kernfs_read(ap) 440 struct vop_read_args /* { 441 struct vnode *a_vp; 442 struct uio *a_uio; 443 int a_ioflag; 444 struct ucred *a_cred; 445 } */ *ap; 446 { 447 struct vnode *vp = ap->a_vp; 448 struct uio *uio = ap->a_uio; 449 struct kern_target *kt; 450 char strbuf[KSTRING], *buf; 451 int off, len; 452 int error; 453 454 if (vp->v_type == VDIR) 455 return (EOPNOTSUPP); 456 457 kt = VTOKERN(vp)->kf_kt; 458 459 #ifdef KERNFS_DIAGNOSTIC 460 printf("kern_read %s\n", kt->kt_name); 461 #endif 462 463 off = uio->uio_offset; 464 #if 0 465 while (buf = strbuf, 466 #else 467 if (buf = strbuf, 468 #endif 469 len = kernfs_xread(kt, off, &buf, sizeof(strbuf))) { 470 if (error = uiomove(buf, len, uio)) 471 return (error); 472 off += len; 473 } 474 return (0); 475 } 476 477 int 478 kernfs_write(ap) 479 struct vop_write_args /* { 480 struct vnode *a_vp; 481 struct uio *a_uio; 482 int a_ioflag; 483 struct ucred *a_cred; 484 } */ *ap; 485 { 486 struct vnode *vp = ap->a_vp; 487 struct uio *uio = ap->a_uio; 488 struct kern_target *kt; 489 int error, xlen; 490 char strbuf[KSTRING]; 491 492 if (vp->v_type == VDIR) 493 return (EOPNOTSUPP); 494 495 kt = VTOKERN(vp)->kf_kt; 496 497 if (uio->uio_offset != 0) 498 return (EINVAL); 499 500 xlen = min(uio->uio_resid, KSTRING-1); 501 if (error = uiomove(strbuf, xlen, uio)) 502 return (error); 503 504 if (uio->uio_resid != 0) 505 return (EIO); 506 507 strbuf[xlen] = '\0'; 508 xlen = strlen(strbuf); 509 return (kernfs_xwrite(kt, strbuf, xlen)); 510 } 511 512 kernfs_readdir(ap) 513 struct vop_readdir_args /* { 514 struct vnode *a_vp; 515 struct uio *a_uio; 516 struct ucred *a_cred; 517 int *a_eofflag; 518 u_long *a_cookies; 519 int a_ncookies; 520 } */ *ap; 521 { 522 struct uio *uio = ap->a_uio; 523 struct kern_target *kt; 524 struct dirent d; 525 int i; 526 int error; 527 528 if (ap->a_vp->v_type != VDIR) 529 return (ENOTDIR); 530 531 /* 532 * We don't allow exporting kernfs mounts, and currently local 533 * requests do not need cookies. 534 */ 535 if (ap->a_ncookies != NULL) 536 panic("kernfs_readdir: not hungry"); 537 538 i = uio->uio_offset / UIO_MX; 539 error = 0; 540 for (kt = &kern_targets[i]; 541 uio->uio_resid >= UIO_MX && i < nkern_targets; kt++, i++) { 542 struct dirent *dp = &d; 543 #ifdef KERNFS_DIAGNOSTIC 544 printf("kernfs_readdir: i = %d\n", i); 545 #endif 546 547 if (kt->kt_tag == KTT_DEVICE) { 548 dev_t *dp = kt->kt_data; 549 struct vnode *fvp; 550 551 if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) 552 continue; 553 } 554 555 bzero((caddr_t)dp, UIO_MX); 556 dp->d_namlen = kt->kt_namlen; 557 bcopy(kt->kt_name, dp->d_name, kt->kt_namlen+1); 558 559 #ifdef KERNFS_DIAGNOSTIC 560 printf("kernfs_readdir: name = %s, len = %d\n", 561 dp->d_name, dp->d_namlen); 562 #endif 563 /* 564 * Fill in the remaining fields 565 */ 566 dp->d_reclen = UIO_MX; 567 dp->d_fileno = i + 3; 568 dp->d_type = kt->kt_type; 569 /* 570 * And ship to userland 571 */ 572 if (error = uiomove((caddr_t)dp, UIO_MX, uio)) 573 break; 574 } 575 576 uio->uio_offset = i * UIO_MX; 577 578 return (error); 579 } 580 581 kernfs_inactive(ap) 582 struct vop_inactive_args /* { 583 struct vnode *a_vp; 584 } */ *ap; 585 { 586 struct vnode *vp = ap->a_vp; 587 588 #ifdef KERNFS_DIAGNOSTIC 589 printf("kernfs_inactive(%x)\n", vp); 590 #endif 591 /* 592 * Clear out the v_type field to avoid 593 * nasty things happening in vgone(). 594 */ 595 vp->v_type = VNON; 596 return (0); 597 } 598 599 kernfs_reclaim(ap) 600 struct vop_reclaim_args /* { 601 struct vnode *a_vp; 602 } */ *ap; 603 { 604 struct vnode *vp = ap->a_vp; 605 606 #ifdef KERNFS_DIAGNOSTIC 607 printf("kernfs_reclaim(%x)\n", vp); 608 #endif 609 if (vp->v_data) { 610 FREE(vp->v_data, M_TEMP); 611 vp->v_data = 0; 612 } 613 return (0); 614 } 615 616 /* 617 * Return POSIX pathconf information applicable to special devices. 618 */ 619 kernfs_pathconf(ap) 620 struct vop_pathconf_args /* { 621 struct vnode *a_vp; 622 int a_name; 623 register_t *a_retval; 624 } */ *ap; 625 { 626 627 switch (ap->a_name) { 628 case _PC_LINK_MAX: 629 *ap->a_retval = LINK_MAX; 630 return (0); 631 case _PC_MAX_CANON: 632 *ap->a_retval = MAX_CANON; 633 return (0); 634 case _PC_MAX_INPUT: 635 *ap->a_retval = MAX_INPUT; 636 return (0); 637 case _PC_PIPE_BUF: 638 *ap->a_retval = PIPE_BUF; 639 return (0); 640 case _PC_CHOWN_RESTRICTED: 641 *ap->a_retval = 1; 642 return (0); 643 case _PC_VDISABLE: 644 *ap->a_retval = _POSIX_VDISABLE; 645 return (0); 646 default: 647 return (EINVAL); 648 } 649 /* NOTREACHED */ 650 } 651 652 /* 653 * Print out the contents of a /dev/fd vnode. 654 */ 655 /* ARGSUSED */ 656 kernfs_print(ap) 657 struct vop_print_args /* { 658 struct vnode *a_vp; 659 } */ *ap; 660 { 661 662 printf("tag VT_KERNFS, kernfs vnode\n"); 663 return (0); 664 } 665 666 /*void*/ 667 kernfs_vfree(ap) 668 struct vop_vfree_args /* { 669 struct vnode *a_pvp; 670 ino_t a_ino; 671 int a_mode; 672 } */ *ap; 673 { 674 675 return (0); 676 } 677 678 /* 679 * /dev/fd vnode unsupported operation 680 */ 681 kernfs_enotsupp() 682 { 683 684 return (EOPNOTSUPP); 685 } 686 687 /* 688 * /dev/fd "should never get here" operation 689 */ 690 kernfs_badop() 691 { 692 693 panic("kernfs: bad op"); 694 /* NOTREACHED */ 695 } 696 697 /* 698 * kernfs vnode null operation 699 */ 700 kernfs_nullop() 701 { 702 703 return (0); 704 } 705 706 #define kernfs_create ((int (*) __P((struct vop_create_args *)))kernfs_enotsupp) 707 #define kernfs_mknod ((int (*) __P((struct vop_mknod_args *)))kernfs_enotsupp) 708 #define kernfs_close ((int (*) __P((struct vop_close_args *)))nullop) 709 #define kernfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))kernfs_enotsupp) 710 #define kernfs_select ((int (*) __P((struct vop_select_args *)))kernfs_enotsupp) 711 #define kernfs_mmap ((int (*) __P((struct vop_mmap_args *)))kernfs_enotsupp) 712 #define kernfs_fsync ((int (*) __P((struct vop_fsync_args *)))nullop) 713 #define kernfs_seek ((int (*) __P((struct vop_seek_args *)))nullop) 714 #define kernfs_remove ((int (*) __P((struct vop_remove_args *)))kernfs_enotsupp) 715 #define kernfs_link ((int (*) __P((struct vop_link_args *)))kernfs_enotsupp) 716 #define kernfs_rename ((int (*) __P((struct vop_rename_args *)))kernfs_enotsupp) 717 #define kernfs_mkdir ((int (*) __P((struct vop_mkdir_args *)))kernfs_enotsupp) 718 #define kernfs_rmdir ((int (*) __P((struct vop_rmdir_args *)))kernfs_enotsupp) 719 #define kernfs_symlink ((int (*) __P((struct vop_symlink_args *)))kernfs_enotsupp) 720 #define kernfs_readlink \ 721 ((int (*) __P((struct vop_readlink_args *)))kernfs_enotsupp) 722 #define kernfs_abortop ((int (*) __P((struct vop_abortop_args *)))nullop) 723 #define kernfs_lock ((int (*) __P((struct vop_lock_args *)))nullop) 724 #define kernfs_unlock ((int (*) __P((struct vop_unlock_args *)))nullop) 725 #define kernfs_bmap ((int (*) __P((struct vop_bmap_args *)))kernfs_badop) 726 #define kernfs_strategy ((int (*) __P((struct vop_strategy_args *)))kernfs_badop) 727 #define kernfs_islocked ((int (*) __P((struct vop_islocked_args *)))nullop) 728 #define kernfs_advlock ((int (*) __P((struct vop_advlock_args *)))kernfs_enotsupp) 729 #define kernfs_blkatoff \ 730 ((int (*) __P((struct vop_blkatoff_args *)))kernfs_enotsupp) 731 #define kernfs_valloc ((int(*) __P(( \ 732 struct vnode *pvp, \ 733 int mode, \ 734 struct ucred *cred, \ 735 struct vnode **vpp))) kernfs_enotsupp) 736 #define kernfs_truncate \ 737 ((int (*) __P((struct vop_truncate_args *)))kernfs_enotsupp) 738 #define kernfs_update ((int (*) __P((struct vop_update_args *)))kernfs_enotsupp) 739 #define kernfs_bwrite ((int (*) __P((struct vop_bwrite_args *)))kernfs_enotsupp) 740 741 int (**kernfs_vnodeop_p)(); 742 struct vnodeopv_entry_desc kernfs_vnodeop_entries[] = { 743 { &vop_default_desc, vn_default_error }, 744 { &vop_lookup_desc, kernfs_lookup }, /* lookup */ 745 { &vop_create_desc, kernfs_create }, /* create */ 746 { &vop_mknod_desc, kernfs_mknod }, /* mknod */ 747 { &vop_open_desc, kernfs_open }, /* open */ 748 { &vop_close_desc, kernfs_close }, /* close */ 749 { &vop_access_desc, kernfs_access }, /* access */ 750 { &vop_getattr_desc, kernfs_getattr }, /* getattr */ 751 { &vop_setattr_desc, kernfs_setattr }, /* setattr */ 752 { &vop_read_desc, kernfs_read }, /* read */ 753 { &vop_write_desc, kernfs_write }, /* write */ 754 { &vop_ioctl_desc, kernfs_ioctl }, /* ioctl */ 755 { &vop_select_desc, kernfs_select }, /* select */ 756 { &vop_mmap_desc, kernfs_mmap }, /* mmap */ 757 { &vop_fsync_desc, kernfs_fsync }, /* fsync */ 758 { &vop_seek_desc, kernfs_seek }, /* seek */ 759 { &vop_remove_desc, kernfs_remove }, /* remove */ 760 { &vop_link_desc, kernfs_link }, /* link */ 761 { &vop_rename_desc, kernfs_rename }, /* rename */ 762 { &vop_mkdir_desc, kernfs_mkdir }, /* mkdir */ 763 { &vop_rmdir_desc, kernfs_rmdir }, /* rmdir */ 764 { &vop_symlink_desc, kernfs_symlink }, /* symlink */ 765 { &vop_readdir_desc, kernfs_readdir }, /* readdir */ 766 { &vop_readlink_desc, kernfs_readlink },/* readlink */ 767 { &vop_abortop_desc, kernfs_abortop }, /* abortop */ 768 { &vop_inactive_desc, kernfs_inactive },/* inactive */ 769 { &vop_reclaim_desc, kernfs_reclaim }, /* reclaim */ 770 { &vop_lock_desc, kernfs_lock }, /* lock */ 771 { &vop_unlock_desc, kernfs_unlock }, /* unlock */ 772 { &vop_bmap_desc, kernfs_bmap }, /* bmap */ 773 { &vop_strategy_desc, kernfs_strategy },/* strategy */ 774 { &vop_print_desc, kernfs_print }, /* print */ 775 { &vop_islocked_desc, kernfs_islocked },/* islocked */ 776 { &vop_pathconf_desc, kernfs_pathconf },/* pathconf */ 777 { &vop_advlock_desc, kernfs_advlock }, /* advlock */ 778 { &vop_blkatoff_desc, kernfs_blkatoff },/* blkatoff */ 779 { &vop_valloc_desc, kernfs_valloc }, /* valloc */ 780 { &vop_vfree_desc, kernfs_vfree }, /* vfree */ 781 { &vop_truncate_desc, kernfs_truncate },/* truncate */ 782 { &vop_update_desc, kernfs_update }, /* update */ 783 { &vop_bwrite_desc, kernfs_bwrite }, /* bwrite */ 784 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 785 }; 786 struct vnodeopv_desc kernfs_vnodeop_opv_desc = 787 { &kernfs_vnodeop_p, kernfs_vnodeop_entries }; 788
Indexes created Wed Oct 01 19:09:53 GMT 2025