kernfs_vnops.c revision 1.32
1 /* $NetBSD: kernfs_vnops.c,v 1.32 1994/12/14 18:47:42 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 } */ *ap; 305 { 306 307 /* Only need to check access permissions. */ 308 return (0); 309 } 310 311 int 312 kernfs_access(ap) 313 struct vop_access_args /* { 314 struct vnode *a_vp; 315 int a_mode; 316 struct ucred *a_cred; 317 struct proc *a_p; 318 } */ *ap; 319 { 320 struct vnode *vp = ap->a_vp; 321 struct ucred *cred = ap->a_cred; 322 mode_t amode = ap->a_mode; 323 mode_t fmode = 324 (vp->v_flag & VROOT) ? DIR_MODE : VTOKERN(vp)->kf_kt->kt_mode; 325 mode_t mask = 0; 326 gid_t *gp; 327 int i; 328 329 /* Some files are simply not modifiable. */ 330 if ((amode & VWRITE) && (fmode & (S_IWUSR|S_IWGRP|S_IWOTH)) == 0) 331 return (EPERM); 332 333 /* Root can do anything else. */ 334 if (cred->cr_uid == 0) 335 return (0); 336 337 /* Check for group 0 (wheel) permissions. */ 338 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 339 if (*gp == 0) { 340 if (amode & VEXEC) 341 mask |= S_IXGRP; 342 if (amode & VREAD) 343 mask |= S_IRGRP; 344 if (amode & VWRITE) 345 mask |= S_IWGRP; 346 return ((fmode & mask) == mask ? 0 : EACCES); 347 } 348 349 /* Otherwise, check everyone else. */ 350 if (amode & VEXEC) 351 mask |= S_IXOTH; 352 if (amode & VREAD) 353 mask |= S_IROTH; 354 if (amode & VWRITE) 355 mask |= S_IWOTH; 356 return ((fmode & mask) == mask ? 0 : EACCES); 357 } 358 359 kernfs_getattr(ap) 360 struct vop_getattr_args /* { 361 struct vnode *a_vp; 362 struct vattr *a_vap; 363 struct ucred *a_cred; 364 struct proc *a_p; 365 } */ *ap; 366 { 367 struct vnode *vp = ap->a_vp; 368 struct vattr *vap = ap->a_vap; 369 int error = 0; 370 char strbuf[KSTRING], *buf; 371 372 bzero((caddr_t) vap, sizeof(*vap)); 373 vattr_null(vap); 374 vap->va_uid = 0; 375 vap->va_gid = 0; 376 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 377 vap->va_size = 0; 378 vap->va_blocksize = DEV_BSIZE; 379 microtime(&vap->va_atime); 380 vap->va_mtime = vap->va_atime; 381 vap->va_ctime = vap->va_ctime; 382 vap->va_gen = 0; 383 vap->va_flags = 0; 384 vap->va_rdev = 0; 385 vap->va_bytes = 0; 386 387 if (vp->v_flag & VROOT) { 388 #ifdef KERNFS_DIAGNOSTIC 389 printf("kernfs_getattr: stat rootdir\n"); 390 #endif 391 vap->va_type = VDIR; 392 vap->va_mode = DIR_MODE; 393 vap->va_nlink = 2; 394 vap->va_fileid = 2; 395 vap->va_size = DEV_BSIZE; 396 } else { 397 struct kern_target *kt = VTOKERN(vp)->kf_kt; 398 int nbytes, total; 399 #ifdef KERNFS_DIAGNOSTIC 400 printf("kernfs_getattr: stat target %s\n", kt->kt_name); 401 #endif 402 vap->va_type = kt->kt_vtype; 403 vap->va_mode = kt->kt_mode; 404 vap->va_nlink = 1; 405 vap->va_fileid = 1 + (kt - kern_targets) / sizeof(*kt); 406 total = 0; 407 while (buf = strbuf, 408 nbytes = kernfs_xread(kt, total, &buf, sizeof(strbuf))) 409 total += nbytes; 410 vap->va_size = total; 411 } 412 413 #ifdef KERNFS_DIAGNOSTIC 414 printf("kernfs_getattr: return error %d\n", error); 415 #endif 416 return (error); 417 } 418 419 kernfs_setattr(ap) 420 struct vop_setattr_args /* { 421 struct vnode *a_vp; 422 struct vattr *a_vap; 423 struct ucred *a_cred; 424 struct proc *a_p; 425 } */ *ap; 426 { 427 428 /* 429 * Silently ignore attribute changes. 430 * This allows for open with truncate to have no 431 * effect until some data is written. I want to 432 * do it this way because all writes are atomic. 433 */ 434 return (0); 435 } 436 437 int 438 kernfs_read(ap) 439 struct vop_read_args /* { 440 struct vnode *a_vp; 441 struct uio *a_uio; 442 int a_ioflag; 443 struct ucred *a_cred; 444 } */ *ap; 445 { 446 struct vnode *vp = ap->a_vp; 447 struct uio *uio = ap->a_uio; 448 struct kern_target *kt; 449 char strbuf[KSTRING], *buf; 450 int off, len; 451 int error; 452 453 if (vp->v_type == VDIR) 454 return (EOPNOTSUPP); 455 456 kt = VTOKERN(vp)->kf_kt; 457 458 #ifdef KERNFS_DIAGNOSTIC 459 printf("kern_read %s\n", kt->kt_name); 460 #endif 461 462 off = uio->uio_offset; 463 #if 0 464 while (buf = strbuf, 465 #else 466 if (buf = strbuf, 467 #endif 468 len = kernfs_xread(kt, off, &buf, sizeof(strbuf))) { 469 if (error = uiomove(buf, len, uio)) 470 return (error); 471 off += len; 472 } 473 return (0); 474 } 475 476 int 477 kernfs_write(ap) 478 struct vop_write_args /* { 479 struct vnode *a_vp; 480 struct uio *a_uio; 481 int a_ioflag; 482 struct ucred *a_cred; 483 } */ *ap; 484 { 485 struct vnode *vp = ap->a_vp; 486 struct uio *uio = ap->a_uio; 487 struct kern_target *kt; 488 int error, xlen; 489 char strbuf[KSTRING]; 490 491 if (vp->v_type == VDIR) 492 return (EOPNOTSUPP); 493 494 kt = VTOKERN(vp)->kf_kt; 495 496 if (uio->uio_offset != 0) 497 return (EINVAL); 498 499 xlen = min(uio->uio_resid, KSTRING-1); 500 if (error = uiomove(strbuf, xlen, uio)) 501 return (error); 502 503 if (uio->uio_resid != 0) 504 return (EIO); 505 506 strbuf[xlen] = '\0'; 507 xlen = strlen(strbuf); 508 return (kernfs_xwrite(kt, strbuf, xlen)); 509 } 510 511 kernfs_readdir(ap) 512 struct vop_readdir_args /* { 513 struct vnode *a_vp; 514 struct uio *a_uio; 515 struct ucred *a_cred; 516 int *a_eofflag; 517 u_long *a_cookies; 518 int a_ncookies; 519 } */ *ap; 520 { 521 struct uio *uio = ap->a_uio; 522 struct kern_target *kt; 523 struct dirent d; 524 int i; 525 int error; 526 527 if (ap->a_vp->v_type != VDIR) 528 return (ENOTDIR); 529 530 /* 531 * We don't allow exporting kernfs mounts, and currently local 532 * requests do not need cookies. 533 */ 534 if (ap->a_ncookies != NULL) 535 panic("kernfs_readdir: not hungry"); 536 537 i = uio->uio_offset / UIO_MX; 538 error = 0; 539 for (kt = &kern_targets[i]; 540 uio->uio_resid >= UIO_MX && i < nkern_targets; kt++, i++) { 541 struct dirent *dp = &d; 542 #ifdef KERNFS_DIAGNOSTIC 543 printf("kernfs_readdir: i = %d\n", i); 544 #endif 545 546 if (kt->kt_tag == KTT_DEVICE) { 547 dev_t *dp = kt->kt_data; 548 struct vnode *fvp; 549 550 if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) 551 continue; 552 } 553 554 bzero((caddr_t)dp, UIO_MX); 555 dp->d_namlen = kt->kt_namlen; 556 bcopy(kt->kt_name, dp->d_name, kt->kt_namlen+1); 557 558 #ifdef KERNFS_DIAGNOSTIC 559 printf("kernfs_readdir: name = %s, len = %d\n", 560 dp->d_name, dp->d_namlen); 561 #endif 562 /* 563 * Fill in the remaining fields 564 */ 565 dp->d_reclen = UIO_MX; 566 dp->d_fileno = i + 3; 567 dp->d_type = kt->kt_type; 568 /* 569 * And ship to userland 570 */ 571 if (error = uiomove((caddr_t)dp, UIO_MX, uio)) 572 break; 573 } 574 575 uio->uio_offset = i * UIO_MX; 576 577 return (error); 578 } 579 580 kernfs_inactive(ap) 581 struct vop_inactive_args /* { 582 struct vnode *a_vp; 583 } */ *ap; 584 { 585 struct vnode *vp = ap->a_vp; 586 587 #ifdef KERNFS_DIAGNOSTIC 588 printf("kernfs_inactive(%x)\n", vp); 589 #endif 590 /* 591 * Clear out the v_type field to avoid 592 * nasty things happening in vgone(). 593 */ 594 vp->v_type = VNON; 595 return (0); 596 } 597 598 kernfs_reclaim(ap) 599 struct vop_reclaim_args /* { 600 struct vnode *a_vp; 601 } */ *ap; 602 { 603 struct vnode *vp = ap->a_vp; 604 605 #ifdef KERNFS_DIAGNOSTIC 606 printf("kernfs_reclaim(%x)\n", vp); 607 #endif 608 if (vp->v_data) { 609 FREE(vp->v_data, M_TEMP); 610 vp->v_data = 0; 611 } 612 return (0); 613 } 614 615 /* 616 * Return POSIX pathconf information applicable to special devices. 617 */ 618 kernfs_pathconf(ap) 619 struct vop_pathconf_args /* { 620 struct vnode *a_vp; 621 int a_name; 622 register_t *a_retval; 623 } */ *ap; 624 { 625 626 switch (ap->a_name) { 627 case _PC_LINK_MAX: 628 *ap->a_retval = LINK_MAX; 629 return (0); 630 case _PC_MAX_CANON: 631 *ap->a_retval = MAX_CANON; 632 return (0); 633 case _PC_MAX_INPUT: 634 *ap->a_retval = MAX_INPUT; 635 return (0); 636 case _PC_PIPE_BUF: 637 *ap->a_retval = PIPE_BUF; 638 return (0); 639 case _PC_CHOWN_RESTRICTED: 640 *ap->a_retval = 1; 641 return (0); 642 case _PC_VDISABLE: 643 *ap->a_retval = _POSIX_VDISABLE; 644 return (0); 645 default: 646 return (EINVAL); 647 } 648 /* NOTREACHED */ 649 } 650 651 /* 652 * Print out the contents of a /dev/fd vnode. 653 */ 654 /* ARGSUSED */ 655 kernfs_print(ap) 656 struct vop_print_args /* { 657 struct vnode *a_vp; 658 } */ *ap; 659 { 660 661 printf("tag VT_KERNFS, kernfs vnode\n"); 662 return (0); 663 } 664 665 /*void*/ 666 kernfs_vfree(ap) 667 struct vop_vfree_args /* { 668 struct vnode *a_pvp; 669 ino_t a_ino; 670 int a_mode; 671 } */ *ap; 672 { 673 674 return (0); 675 } 676 677 /* 678 * /dev/fd vnode unsupported operation 679 */ 680 kernfs_enotsupp() 681 { 682 683 return (EOPNOTSUPP); 684 } 685 686 /* 687 * /dev/fd "should never get here" operation 688 */ 689 kernfs_badop() 690 { 691 692 panic("kernfs: bad op"); 693 /* NOTREACHED */ 694 } 695 696 /* 697 * kernfs vnode null operation 698 */ 699 kernfs_nullop() 700 { 701 702 return (0); 703 } 704 705 #define kernfs_create ((int (*) __P((struct vop_create_args *)))kernfs_enotsupp) 706 #define kernfs_mknod ((int (*) __P((struct vop_mknod_args *)))kernfs_enotsupp) 707 #define kernfs_close ((int (*) __P((struct vop_close_args *)))nullop) 708 #define kernfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))kernfs_enotsupp) 709 #define kernfs_select ((int (*) __P((struct vop_select_args *)))kernfs_enotsupp) 710 #define kernfs_mmap ((int (*) __P((struct vop_mmap_args *)))kernfs_enotsupp) 711 #define kernfs_fsync ((int (*) __P((struct vop_fsync_args *)))nullop) 712 #define kernfs_seek ((int (*) __P((struct vop_seek_args *)))nullop) 713 #define kernfs_remove ((int (*) __P((struct vop_remove_args *)))kernfs_enotsupp) 714 #define kernfs_link ((int (*) __P((struct vop_link_args *)))kernfs_enotsupp) 715 #define kernfs_rename ((int (*) __P((struct vop_rename_args *)))kernfs_enotsupp) 716 #define kernfs_mkdir ((int (*) __P((struct vop_mkdir_args *)))kernfs_enotsupp) 717 #define kernfs_rmdir ((int (*) __P((struct vop_rmdir_args *)))kernfs_enotsupp) 718 #define kernfs_symlink ((int (*) __P((struct vop_symlink_args *)))kernfs_enotsupp) 719 #define kernfs_readlink \ 720 ((int (*) __P((struct vop_readlink_args *)))kernfs_enotsupp) 721 #define kernfs_abortop ((int (*) __P((struct vop_abortop_args *)))nullop) 722 #define kernfs_lock ((int (*) __P((struct vop_lock_args *)))nullop) 723 #define kernfs_unlock ((int (*) __P((struct vop_unlock_args *)))nullop) 724 #define kernfs_bmap ((int (*) __P((struct vop_bmap_args *)))kernfs_badop) 725 #define kernfs_strategy ((int (*) __P((struct vop_strategy_args *)))kernfs_badop) 726 #define kernfs_islocked ((int (*) __P((struct vop_islocked_args *)))nullop) 727 #define kernfs_advlock ((int (*) __P((struct vop_advlock_args *)))kernfs_enotsupp) 728 #define kernfs_blkatoff \ 729 ((int (*) __P((struct vop_blkatoff_args *)))kernfs_enotsupp) 730 #define kernfs_valloc ((int(*) __P(( \ 731 struct vnode *pvp, \ 732 int mode, \ 733 struct ucred *cred, \ 734 struct vnode **vpp))) kernfs_enotsupp) 735 #define kernfs_truncate \ 736 ((int (*) __P((struct vop_truncate_args *)))kernfs_enotsupp) 737 #define kernfs_update ((int (*) __P((struct vop_update_args *)))kernfs_enotsupp) 738 #define kernfs_bwrite ((int (*) __P((struct vop_bwrite_args *)))kernfs_enotsupp) 739 740 int (**kernfs_vnodeop_p)(); 741 struct vnodeopv_entry_desc kernfs_vnodeop_entries[] = { 742 { &vop_default_desc, vn_default_error }, 743 { &vop_lookup_desc, kernfs_lookup }, /* lookup */ 744 { &vop_create_desc, kernfs_create }, /* create */ 745 { &vop_mknod_desc, kernfs_mknod }, /* mknod */ 746 { &vop_open_desc, kernfs_open }, /* open */ 747 { &vop_close_desc, kernfs_close }, /* close */ 748 { &vop_access_desc, kernfs_access }, /* access */ 749 { &vop_getattr_desc, kernfs_getattr }, /* getattr */ 750 { &vop_setattr_desc, kernfs_setattr }, /* setattr */ 751 { &vop_read_desc, kernfs_read }, /* read */ 752 { &vop_write_desc, kernfs_write }, /* write */ 753 { &vop_ioctl_desc, kernfs_ioctl }, /* ioctl */ 754 { &vop_select_desc, kernfs_select }, /* select */ 755 { &vop_mmap_desc, kernfs_mmap }, /* mmap */ 756 { &vop_fsync_desc, kernfs_fsync }, /* fsync */ 757 { &vop_seek_desc, kernfs_seek }, /* seek */ 758 { &vop_remove_desc, kernfs_remove }, /* remove */ 759 { &vop_link_desc, kernfs_link }, /* link */ 760 { &vop_rename_desc, kernfs_rename }, /* rename */ 761 { &vop_mkdir_desc, kernfs_mkdir }, /* mkdir */ 762 { &vop_rmdir_desc, kernfs_rmdir }, /* rmdir */ 763 { &vop_symlink_desc, kernfs_symlink }, /* symlink */ 764 { &vop_readdir_desc, kernfs_readdir }, /* readdir */ 765 { &vop_readlink_desc, kernfs_readlink },/* readlink */ 766 { &vop_abortop_desc, kernfs_abortop }, /* abortop */ 767 { &vop_inactive_desc, kernfs_inactive },/* inactive */ 768 { &vop_reclaim_desc, kernfs_reclaim }, /* reclaim */ 769 { &vop_lock_desc, kernfs_lock }, /* lock */ 770 { &vop_unlock_desc, kernfs_unlock }, /* unlock */ 771 { &vop_bmap_desc, kernfs_bmap }, /* bmap */ 772 { &vop_strategy_desc, kernfs_strategy },/* strategy */ 773 { &vop_print_desc, kernfs_print }, /* print */ 774 { &vop_islocked_desc, kernfs_islocked },/* islocked */ 775 { &vop_pathconf_desc, kernfs_pathconf },/* pathconf */ 776 { &vop_advlock_desc, kernfs_advlock }, /* advlock */ 777 { &vop_blkatoff_desc, kernfs_blkatoff },/* blkatoff */ 778 { &vop_valloc_desc, kernfs_valloc }, /* valloc */ 779 { &vop_vfree_desc, kernfs_vfree }, /* vfree */ 780 { &vop_truncate_desc, kernfs_truncate },/* truncate */ 781 { &vop_update_desc, kernfs_update }, /* update */ 782 { &vop_bwrite_desc, kernfs_bwrite }, /* bwrite */ 783 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 784 }; 785 struct vnodeopv_desc kernfs_vnodeop_opv_desc = 786 { &kernfs_vnodeop_p, kernfs_vnodeop_entries }; 787
Indexes created Wed Oct 01 19:09:53 GMT 2025