kernfs_vnops.c revision 1.23
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 1.23 1994/06/08 11:33:21 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 if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) 249 return (ENXIO); 250 *vpp = fvp; 251 VREF(fvp); 252 VOP_LOCK(fvp); 253 return (0); 254 } 255 256 #ifdef KERNFS_DIAGNOSTIC 257 printf("kernfs_lookup: allocate new vnode\n"); 258 #endif 259 if (error = getnewvnode(VT_KERNFS, dvp->v_mount, kernfs_vnodeop_p, 260 &fvp)) 261 return (error); 262 263 MALLOC(fvp->v_data, void *, sizeof(struct kernfs_node), M_TEMP, 264 M_WAITOK); 265 VTOKERN(fvp)->kf_kt = kt; 266 fvp->v_type = kt->kt_vtype; 267 *vpp = fvp; 268 269 #ifdef KERNFS_DIAGNOSTIC 270 printf("kernfs_lookup: newvp = %x\n", fvp); 271 #endif 272 return (0); 273 } 274 275 kernfs_open(ap) 276 struct vop_open_args /* { 277 struct vnode *a_vp; 278 int a_mode; 279 struct ucred *a_cred; 280 struct proc *a_p; 281 } */ *ap; 282 { 283 284 /* Only need to check access permissions. */ 285 return (0); 286 } 287 288 static int 289 kernfs_access(ap) 290 struct vop_access_args /* { 291 struct vnode *a_vp; 292 int a_mode; 293 struct ucred *a_cred; 294 struct proc *a_p; 295 } */ *ap; 296 { 297 register struct vnode *vp = ap->a_vp; 298 register struct ucred *cred = ap->a_cred; 299 mode_t amode = ap->a_mode; 300 mode_t fmode = 301 (vp->v_flag & VROOT) ? DIR_MODE : VTOKERN(vp)->kf_kt->kt_mode; 302 mode_t mask = 0; 303 register gid_t *gp; 304 int i; 305 306 /* Some files are simply not modifiable. */ 307 if ((amode & VWRITE) && (fmode & (S_IWUSR|S_IWGRP|S_IWOTH)) == 0) 308 return (EPERM); 309 310 /* Root can do anything else. */ 311 if (cred->cr_uid == 0) 312 return (0); 313 314 /* Check for group 0 (wheel) permissions. */ 315 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 316 if (*gp == 0) { 317 if (amode & VEXEC) 318 mask |= S_IXGRP; 319 if (amode & VREAD) 320 mask |= S_IRGRP; 321 if (amode & VWRITE) 322 mask |= S_IWGRP; 323 return ((fmode & mask) == mask ? 0 : EACCES); 324 } 325 326 /* Otherwise, check everyone else. */ 327 if (amode & VEXEC) 328 mask |= S_IXOTH; 329 if (amode & VREAD) 330 mask |= S_IROTH; 331 if (amode & VWRITE) 332 mask |= S_IWOTH; 333 return ((fmode & mask) == mask ? 0 : EACCES); 334 } 335 336 kernfs_getattr(ap) 337 struct vop_getattr_args /* { 338 struct vnode *a_vp; 339 struct vattr *a_vap; 340 struct ucred *a_cred; 341 struct proc *a_p; 342 } */ *ap; 343 { 344 struct vnode *vp = ap->a_vp; 345 struct vattr *vap = ap->a_vap; 346 int error = 0; 347 char strbuf[KSTRING]; 348 349 bzero((caddr_t) vap, sizeof(*vap)); 350 vattr_null(vap); 351 vap->va_uid = 0; 352 vap->va_gid = 0; 353 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 354 vap->va_size = 0; 355 vap->va_blocksize = DEV_BSIZE; 356 microtime(&vap->va_atime); 357 vap->va_mtime = vap->va_atime; 358 vap->va_ctime = vap->va_ctime; 359 vap->va_gen = 0; 360 vap->va_flags = 0; 361 vap->va_rdev = 0; 362 vap->va_bytes = 0; 363 364 if (vp->v_flag & VROOT) { 365 #ifdef KERNFS_DIAGNOSTIC 366 printf("kernfs_getattr: stat rootdir\n"); 367 #endif 368 vap->va_type = VDIR; 369 vap->va_mode = DIR_MODE; 370 vap->va_nlink = 2; 371 vap->va_fileid = 2; 372 vap->va_size = DEV_BSIZE; 373 } else { 374 struct kern_target *kt = VTOKERN(vp)->kf_kt; 375 int nbytes; 376 #ifdef KERNFS_DIAGNOSTIC 377 printf("kernfs_getattr: stat target %s\n", kt->kt_name); 378 #endif 379 vap->va_type = kt->kt_vtype; 380 vap->va_mode = kt->kt_mode; 381 vap->va_nlink = 1; 382 vap->va_fileid = 1 + (kt - kern_targets) / sizeof(*kt); 383 error = kernfs_xread(kt, strbuf, sizeof(strbuf), &nbytes); 384 vap->va_size = nbytes; 385 } 386 387 #ifdef KERNFS_DIAGNOSTIC 388 printf("kernfs_getattr: return error %d\n", error); 389 #endif 390 return (error); 391 } 392 393 kernfs_setattr(ap) 394 struct vop_setattr_args /* { 395 struct vnode *a_vp; 396 struct vattr *a_vap; 397 struct ucred *a_cred; 398 struct proc *a_p; 399 } */ *ap; 400 { 401 402 /* 403 * Silently ignore attribute changes. 404 * This allows for open with truncate to have no 405 * effect until some data is written. I want to 406 * do it this way because all writes are atomic. 407 */ 408 return (0); 409 } 410 411 static int 412 kernfs_read(ap) 413 struct vop_read_args /* { 414 struct vnode *a_vp; 415 struct uio *a_uio; 416 int a_ioflag; 417 struct ucred *a_cred; 418 } */ *ap; 419 { 420 struct vnode *vp = ap->a_vp; 421 struct uio *uio = ap->a_uio; 422 struct kern_target *kt; 423 char strbuf[KSTRING]; 424 int off = uio->uio_offset; 425 int error, len; 426 char *cp; 427 428 if (vp->v_type == VDIR) 429 return (EOPNOTSUPP); 430 431 kt = VTOKERN(vp)->kf_kt; 432 433 #ifdef KERNFS_DIAGNOSTIC 434 printf("kern_read %s\n", kt->kt_name); 435 #endif 436 437 len = 0; 438 if (error = kernfs_xread(kt, strbuf, sizeof(strbuf), &len)) 439 return (error); 440 if (len <= off) 441 return (0); 442 return (uiomove(&strbuf[off], len - off, uio)); 443 } 444 445 static int 446 kernfs_write(ap) 447 struct vop_write_args /* { 448 struct vnode *a_vp; 449 struct uio *a_uio; 450 int a_ioflag; 451 struct ucred *a_cred; 452 } */ *ap; 453 { 454 struct vnode *vp = ap->a_vp; 455 struct uio *uio = ap->a_uio; 456 struct kern_target *kt; 457 int error, xlen; 458 char strbuf[KSTRING]; 459 460 if (vp->v_type == VDIR) 461 return (EOPNOTSUPP); 462 463 kt = VTOKERN(vp)->kf_kt; 464 465 if (uio->uio_offset != 0) 466 return (EINVAL); 467 468 xlen = min(uio->uio_resid, KSTRING-1); 469 if (error = uiomove(strbuf, xlen, uio)) 470 return (error); 471 472 if (uio->uio_resid != 0) 473 return (EIO); 474 475 strbuf[xlen] = '\0'; 476 xlen = strlen(strbuf); 477 return (kernfs_xwrite(kt, strbuf, xlen)); 478 } 479 480 kernfs_readdir(ap) 481 struct vop_readdir_args /* { 482 struct vnode *a_vp; 483 struct uio *a_uio; 484 struct ucred *a_cred; 485 } */ *ap; 486 { 487 struct uio *uio = ap->a_uio; 488 register struct kern_target *kt; 489 struct dirent d; 490 int i; 491 int error; 492 493 if (ap->a_vp->v_type != VDIR) 494 return (ENOTDIR); 495 496 i = uio->uio_offset / UIO_MX; 497 error = 0; 498 for (kt = &kern_targets[i]; 499 uio->uio_resid >= UIO_MX && i < nkern_targets; kt++, i++) { 500 register struct dirent *dp = &d; 501 #ifdef KERNFS_DIAGNOSTIC 502 printf("kernfs_readdir: i = %d\n", i); 503 #endif 504 if (kt->kt_tag == KTT_DEVICE) { 505 register dev_t *dp = kt->kt_data; 506 struct vnode *fvp; 507 if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) 508 continue; 509 } 510 bzero((caddr_t)dp, UIO_MX); 511 dp->d_namlen = kt->kt_namlen; 512 bcopy(kt->kt_name, dp->d_name, kt->kt_namlen + 1); 513 #ifdef KERNFS_DIAGNOSTIC 514 printf("kernfs_readdir: name = %s, len = %d\n", 515 dp->d_name, dp->d_namlen); 516 #endif 517 /* 518 * Fill in the remaining fields 519 */ 520 dp->d_reclen = UIO_MX; 521 dp->d_fileno = i + 3; 522 dp->d_type = kt->kt_type; 523 /* 524 * And ship to userland 525 */ 526 if (error = uiomove((caddr_t)dp, UIO_MX, uio)) 527 break; 528 } 529 530 uio->uio_offset = i * UIO_MX; 531 532 return (error); 533 } 534 535 kernfs_inactive(ap) 536 struct vop_inactive_args /* { 537 struct vnode *a_vp; 538 } */ *ap; 539 { 540 struct vnode *vp = ap->a_vp; 541 542 #ifdef KERNFS_DIAGNOSTIC 543 printf("kernfs_inactive(%x)\n", vp); 544 #endif 545 /* 546 * Clear out the v_type field to avoid 547 * nasty things happening in vgone(). 548 */ 549 vp->v_type = VNON; 550 return (0); 551 } 552 553 kernfs_reclaim(ap) 554 struct vop_reclaim_args /* { 555 struct vnode *a_vp; 556 } */ *ap; 557 { 558 struct vnode *vp = ap->a_vp; 559 560 #ifdef KERNFS_DIAGNOSTIC 561 printf("kernfs_reclaim(%x)\n", vp); 562 #endif 563 if (vp->v_data) { 564 FREE(vp->v_data, M_TEMP); 565 vp->v_data = 0; 566 } 567 return (0); 568 } 569 570 /* 571 * Return POSIX pathconf information applicable to special devices. 572 */ 573 kernfs_pathconf(ap) 574 struct vop_pathconf_args /* { 575 struct vnode *a_vp; 576 int a_name; 577 int *a_retval; 578 } */ *ap; 579 { 580 581 switch (ap->a_name) { 582 case _PC_LINK_MAX: 583 *ap->a_retval = LINK_MAX; 584 return (0); 585 case _PC_MAX_CANON: 586 *ap->a_retval = MAX_CANON; 587 return (0); 588 case _PC_MAX_INPUT: 589 *ap->a_retval = MAX_INPUT; 590 return (0); 591 case _PC_PIPE_BUF: 592 *ap->a_retval = PIPE_BUF; 593 return (0); 594 case _PC_CHOWN_RESTRICTED: 595 *ap->a_retval = 1; 596 return (0); 597 case _PC_VDISABLE: 598 *ap->a_retval = _POSIX_VDISABLE; 599 return (0); 600 default: 601 return (EINVAL); 602 } 603 /* NOTREACHED */ 604 } 605 606 /* 607 * Print out the contents of a /dev/fd vnode. 608 */ 609 /* ARGSUSED */ 610 kernfs_print(ap) 611 struct vop_print_args /* { 612 struct vnode *a_vp; 613 } */ *ap; 614 { 615 616 printf("tag VT_KERNFS, kernfs vnode\n"); 617 return (0); 618 } 619 620 /*void*/ 621 kernfs_vfree(ap) 622 struct vop_vfree_args /* { 623 struct vnode *a_pvp; 624 ino_t a_ino; 625 int a_mode; 626 } */ *ap; 627 { 628 629 return (0); 630 } 631 632 /* 633 * /dev/fd vnode unsupported operation 634 */ 635 kernfs_enotsupp() 636 { 637 638 return (EOPNOTSUPP); 639 } 640 641 /* 642 * /dev/fd "should never get here" operation 643 */ 644 kernfs_badop() 645 { 646 647 panic("kernfs: bad op"); 648 /* NOTREACHED */ 649 } 650 651 /* 652 * kernfs vnode null operation 653 */ 654 kernfs_nullop() 655 { 656 657 return (0); 658 } 659 660 #define kernfs_create ((int (*) __P((struct vop_create_args *)))kernfs_enotsupp) 661 #define kernfs_mknod ((int (*) __P((struct vop_mknod_args *)))kernfs_enotsupp) 662 #define kernfs_close ((int (*) __P((struct vop_close_args *)))nullop) 663 #define kernfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))kernfs_enotsupp) 664 #define kernfs_select ((int (*) __P((struct vop_select_args *)))kernfs_enotsupp) 665 #define kernfs_mmap ((int (*) __P((struct vop_mmap_args *)))kernfs_enotsupp) 666 #define kernfs_fsync ((int (*) __P((struct vop_fsync_args *)))nullop) 667 #define kernfs_seek ((int (*) __P((struct vop_seek_args *)))nullop) 668 #define kernfs_remove ((int (*) __P((struct vop_remove_args *)))kernfs_enotsupp) 669 #define kernfs_link ((int (*) __P((struct vop_link_args *)))kernfs_enotsupp) 670 #define kernfs_rename ((int (*) __P((struct vop_rename_args *)))kernfs_enotsupp) 671 #define kernfs_mkdir ((int (*) __P((struct vop_mkdir_args *)))kernfs_enotsupp) 672 #define kernfs_rmdir ((int (*) __P((struct vop_rmdir_args *)))kernfs_enotsupp) 673 #define kernfs_symlink ((int (*) __P((struct vop_symlink_args *)))kernfs_enotsupp) 674 #define kernfs_readlink \ 675 ((int (*) __P((struct vop_readlink_args *)))kernfs_enotsupp) 676 #define kernfs_abortop ((int (*) __P((struct vop_abortop_args *)))nullop) 677 #define kernfs_lock ((int (*) __P((struct vop_lock_args *)))nullop) 678 #define kernfs_unlock ((int (*) __P((struct vop_unlock_args *)))nullop) 679 #define kernfs_bmap ((int (*) __P((struct vop_bmap_args *)))kernfs_badop) 680 #define kernfs_strategy ((int (*) __P((struct vop_strategy_args *)))kernfs_badop) 681 #define kernfs_islocked ((int (*) __P((struct vop_islocked_args *)))nullop) 682 #define kernfs_advlock ((int (*) __P((struct vop_advlock_args *)))kernfs_enotsupp) 683 #define kernfs_blkatoff \ 684 ((int (*) __P((struct vop_blkatoff_args *)))kernfs_enotsupp) 685 #define kernfs_valloc ((int(*) __P(( \ 686 struct vnode *pvp, \ 687 int mode, \ 688 struct ucred *cred, \ 689 struct vnode **vpp))) kernfs_enotsupp) 690 #define kernfs_truncate \ 691 ((int (*) __P((struct vop_truncate_args *)))kernfs_enotsupp) 692 #define kernfs_update ((int (*) __P((struct vop_update_args *)))kernfs_enotsupp) 693 #define kernfs_bwrite ((int (*) __P((struct vop_bwrite_args *)))kernfs_enotsupp) 694 695 int (**kernfs_vnodeop_p)(); 696 struct vnodeopv_entry_desc kernfs_vnodeop_entries[] = { 697 { &vop_default_desc, vn_default_error }, 698 { &vop_lookup_desc, kernfs_lookup }, /* lookup */ 699 { &vop_create_desc, kernfs_create }, /* create */ 700 { &vop_mknod_desc, kernfs_mknod }, /* mknod */ 701 { &vop_open_desc, kernfs_open }, /* open */ 702 { &vop_close_desc, kernfs_close }, /* close */ 703 { &vop_access_desc, kernfs_access }, /* access */ 704 { &vop_getattr_desc, kernfs_getattr }, /* getattr */ 705 { &vop_setattr_desc, kernfs_setattr }, /* setattr */ 706 { &vop_read_desc, kernfs_read }, /* read */ 707 { &vop_write_desc, kernfs_write }, /* write */ 708 { &vop_ioctl_desc, kernfs_ioctl }, /* ioctl */ 709 { &vop_select_desc, kernfs_select }, /* select */ 710 { &vop_mmap_desc, kernfs_mmap }, /* mmap */ 711 { &vop_fsync_desc, kernfs_fsync }, /* fsync */ 712 { &vop_seek_desc, kernfs_seek }, /* seek */ 713 { &vop_remove_desc, kernfs_remove }, /* remove */ 714 { &vop_link_desc, kernfs_link }, /* link */ 715 { &vop_rename_desc, kernfs_rename }, /* rename */ 716 { &vop_mkdir_desc, kernfs_mkdir }, /* mkdir */ 717 { &vop_rmdir_desc, kernfs_rmdir }, /* rmdir */ 718 { &vop_symlink_desc, kernfs_symlink }, /* symlink */ 719 { &vop_readdir_desc, kernfs_readdir }, /* readdir */ 720 { &vop_readlink_desc, kernfs_readlink },/* readlink */ 721 { &vop_abortop_desc, kernfs_abortop }, /* abortop */ 722 { &vop_inactive_desc, kernfs_inactive },/* inactive */ 723 { &vop_reclaim_desc, kernfs_reclaim }, /* reclaim */ 724 { &vop_lock_desc, kernfs_lock }, /* lock */ 725 { &vop_unlock_desc, kernfs_unlock }, /* unlock */ 726 { &vop_bmap_desc, kernfs_bmap }, /* bmap */ 727 { &vop_strategy_desc, kernfs_strategy },/* strategy */ 728 { &vop_print_desc, kernfs_print }, /* print */ 729 { &vop_islocked_desc, kernfs_islocked },/* islocked */ 730 { &vop_pathconf_desc, kernfs_pathconf },/* pathconf */ 731 { &vop_advlock_desc, kernfs_advlock }, /* advlock */ 732 { &vop_blkatoff_desc, kernfs_blkatoff },/* blkatoff */ 733 { &vop_valloc_desc, kernfs_valloc }, /* valloc */ 734 { &vop_vfree_desc, kernfs_vfree }, /* vfree */ 735 { &vop_truncate_desc, kernfs_truncate },/* truncate */ 736 { &vop_update_desc, kernfs_update }, /* update */ 737 { &vop_bwrite_desc, kernfs_bwrite }, /* bwrite */ 738 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 739 }; 740 struct vnodeopv_desc kernfs_vnodeop_opv_desc = 741 { &kernfs_vnodeop_p, kernfs_vnodeop_entries }; 742
Indexes created Mon Sep 22 13:09:51 GMT 2025