kernfs_vnops.c revision 1.1.1.2
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 * @(#)kernfs_vnops.c 8.15 (Berkeley) 5/21/95 37 */ 38 39 /* 40 * Kernel parameter filesystem (/kern) 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/vmmeter.h> 47 #include <sys/types.h> 48 #include <sys/time.h> 49 #include <sys/proc.h> 50 #include <sys/vnode.h> 51 #include <sys/malloc.h> 52 #include <sys/file.h> 53 #include <sys/stat.h> 54 #include <sys/mount.h> 55 #include <sys/namei.h> 56 #include <sys/buf.h> 57 #include <sys/dirent.h> 58 #include <miscfs/kernfs/kernfs.h> 59 60 #define KSTRING 256 /* Largest I/O available via this filesystem */ 61 #define UIO_MX 32 62 63 #define READ_MODE (S_IRUSR|S_IRGRP|S_IROTH) 64 #define WRITE_MODE (S_IWUSR|S_IRUSR|S_IRGRP|S_IROTH) 65 #define DIR_MODE (S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) 66 67 struct kern_target { 68 u_char kt_type; 69 u_char kt_namlen; 70 char *kt_name; 71 void *kt_data; 72 #define KTT_NULL 1 73 #define KTT_TIME 5 74 #define KTT_INT 17 75 #define KTT_STRING 31 76 #define KTT_HOSTNAME 47 77 #define KTT_AVENRUN 53 78 #define KTT_DEVICE 71 79 u_char kt_tag; 80 u_char kt_vtype; 81 mode_t kt_mode; 82 } kern_targets[] = { 83 /* NOTE: The name must be less than UIO_MX-16 chars in length */ 84 #define N(s) sizeof(s)-1, s 85 /* name data tag type ro/rw */ 86 { DT_DIR, N("."), 0, KTT_NULL, VDIR, DIR_MODE }, 87 { DT_DIR, N(".."), 0, KTT_NULL, VDIR, DIR_MODE }, 88 { DT_REG, N("boottime"), &boottime.tv_sec, KTT_INT, VREG, READ_MODE }, 89 { DT_REG, N("copyright"), copyright, KTT_STRING, VREG, READ_MODE }, 90 { DT_REG, N("hostname"), 0, KTT_HOSTNAME, VREG, WRITE_MODE }, 91 { DT_REG, N("hz"), &hz, KTT_INT, VREG, READ_MODE }, 92 { DT_REG, N("loadavg"), 0, KTT_AVENRUN, VREG, READ_MODE }, 93 { DT_REG, N("pagesize"), &cnt.v_page_size, KTT_INT, VREG, READ_MODE }, 94 { DT_REG, N("physmem"), &physmem, KTT_INT, VREG, READ_MODE }, 95 #if 0 96 { DT_DIR, N("root"), 0, KTT_NULL, VDIR, DIR_MODE }, 97 #endif 98 { DT_BLK, N("rootdev"), &rootdev, KTT_DEVICE, VBLK, READ_MODE }, 99 { DT_CHR, N("rrootdev"), &rrootdev, KTT_DEVICE, VCHR, READ_MODE }, 100 { DT_REG, N("time"), 0, KTT_TIME, VREG, READ_MODE }, 101 { DT_REG, N("version"), version, KTT_STRING, VREG, READ_MODE }, 102 #undef N 103 }; 104 static int nkern_targets = sizeof(kern_targets) / sizeof(kern_targets[0]); 105 106 static int 107 kernfs_xread(kt, buf, len, lenp) 108 struct kern_target *kt; 109 char *buf; 110 int len; 111 int *lenp; 112 { 113 114 switch (kt->kt_tag) { 115 case KTT_TIME: { 116 struct timeval tv; 117 microtime(&tv); 118 sprintf(buf, "%d %d\n", tv.tv_sec, tv.tv_usec); 119 break; 120 } 121 122 case KTT_INT: { 123 int *ip = kt->kt_data; 124 sprintf(buf, "%d\n", *ip); 125 break; 126 } 127 128 case KTT_STRING: { 129 char *cp = kt->kt_data; 130 int xlen = strlen(cp) + 1; 131 132 if (xlen >= len) 133 return (EINVAL); 134 135 bcopy(cp, buf, xlen); 136 break; 137 } 138 139 case KTT_HOSTNAME: { 140 char *cp = hostname; 141 int xlen = hostnamelen; 142 143 if (xlen >= (len-2)) 144 return (EINVAL); 145 146 bcopy(cp, buf, xlen); 147 buf[xlen] = '\n'; 148 buf[xlen+1] = '\0'; 149 break; 150 } 151 152 case KTT_AVENRUN: 153 sprintf(buf, "%ld %ld %ld %ld\n", 154 averunnable.ldavg[0], averunnable.ldavg[1], 155 averunnable.ldavg[2], averunnable.fscale); 156 break; 157 158 default: 159 return (EIO); 160 } 161 162 *lenp = strlen(buf); 163 return (0); 164 } 165 166 static int 167 kernfs_xwrite(kt, buf, len) 168 struct kern_target *kt; 169 char *buf; 170 int len; 171 { 172 173 switch (kt->kt_tag) { 174 case KTT_HOSTNAME: 175 if (buf[len-1] == '\n') 176 --len; 177 bcopy(buf, hostname, len); 178 hostname[len] = '\0'; 179 hostnamelen = len; 180 return (0); 181 182 default: 183 return (EIO); 184 } 185 } 186 187 188 /* 189 * vp is the current namei directory 190 * ndp is the name to locate in that directory... 191 */ 192 kernfs_lookup(ap) 193 struct vop_lookup_args /* { 194 struct vnode * a_dvp; 195 struct vnode ** a_vpp; 196 struct componentname * a_cnp; 197 } */ *ap; 198 { 199 struct componentname *cnp = ap->a_cnp; 200 struct vnode **vpp = ap->a_vpp; 201 struct vnode *dvp = ap->a_dvp; 202 char *pname = cnp->cn_nameptr; 203 struct proc *p = cnp->cn_proc; 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 *vpp = NULLVP; 215 216 if (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME) 217 return (EROFS); 218 219 VOP_UNLOCK(dvp, 0, p); 220 if (cnp->cn_namelen == 1 && *pname == '.') { 221 *vpp = dvp; 222 VREF(dvp); 223 vn_lock(dvp, LK_SHARED | LK_RETRY, p); 224 return (0); 225 } 226 227 #if 0 228 if (cnp->cn_namelen == 4 && bcmp(pname, "root", 4) == 0) { 229 *vpp = rootdir; 230 VREF(rootdir); 231 vn_lock(rootdir, LK_SHARED | LK_RETRY, p) 232 return (0); 233 } 234 #endif 235 236 for (kt = kern_targets, i = 0; i < nkern_targets; kt++, i++) { 237 if (cnp->cn_namelen == kt->kt_namlen && 238 bcmp(kt->kt_name, pname, cnp->cn_namelen) == 0) 239 goto found; 240 } 241 242 #ifdef KERNFS_DIAGNOSTIC 243 printf("kernfs_lookup: i = %d, failed", i); 244 #endif 245 246 vn_lock(dvp, LK_SHARED | LK_RETRY, p); 247 return (cnp->cn_nameiop == LOOKUP ? ENOENT : EROFS); 248 249 found: 250 if (kt->kt_tag == KTT_DEVICE) { 251 dev_t *dp = kt->kt_data; 252 loop: 253 if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) { 254 vn_lock(dvp, LK_SHARED | LK_RETRY, p); 255 return (ENOENT); 256 } 257 *vpp = fvp; 258 if (vget(fvp, LK_EXCLUSIVE, p)) 259 goto loop; 260 return (0); 261 } 262 263 #ifdef KERNFS_DIAGNOSTIC 264 printf("kernfs_lookup: allocate new vnode\n"); 265 #endif 266 if (error = getnewvnode(VT_KERNFS, dvp->v_mount, kernfs_vnodeop_p, 267 &fvp)) { 268 vn_lock(dvp, LK_SHARED | LK_RETRY, p); 269 return (error); 270 } 271 272 MALLOC(fvp->v_data, void *, sizeof(struct kernfs_node), M_TEMP, 273 M_WAITOK); 274 VTOKERN(fvp)->kf_kt = kt; 275 fvp->v_type = kt->kt_vtype; 276 vn_lock(fvp, LK_SHARED | LK_RETRY, p); 277 *vpp = fvp; 278 279 #ifdef KERNFS_DIAGNOSTIC 280 printf("kernfs_lookup: newvp = %x\n", fvp); 281 #endif 282 return (0); 283 } 284 285 kernfs_open(ap) 286 struct vop_open_args /* { 287 struct vnode *a_vp; 288 int a_mode; 289 struct ucred *a_cred; 290 struct proc *a_p; 291 } */ *ap; 292 { 293 294 /* Only need to check access permissions. */ 295 return (0); 296 } 297 298 static int 299 kernfs_access(ap) 300 struct vop_access_args /* { 301 struct vnode *a_vp; 302 int a_mode; 303 struct ucred *a_cred; 304 struct proc *a_p; 305 } */ *ap; 306 { 307 register struct vnode *vp = ap->a_vp; 308 register struct ucred *cred = ap->a_cred; 309 mode_t amode = ap->a_mode; 310 mode_t fmode = 311 (vp->v_flag & VROOT) ? DIR_MODE : VTOKERN(vp)->kf_kt->kt_mode; 312 mode_t mask = 0; 313 register gid_t *gp; 314 int i; 315 316 /* Some files are simply not modifiable. */ 317 if ((amode & VWRITE) && (fmode & (S_IWUSR|S_IWGRP|S_IWOTH)) == 0) 318 return (EPERM); 319 320 /* Root can do anything else. */ 321 if (cred->cr_uid == 0) 322 return (0); 323 324 /* Check for group 0 (wheel) permissions. */ 325 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) 326 if (*gp == 0) { 327 if (amode & VEXEC) 328 mask |= S_IXGRP; 329 if (amode & VREAD) 330 mask |= S_IRGRP; 331 if (amode & VWRITE) 332 mask |= S_IWGRP; 333 return ((fmode & mask) == mask ? 0 : EACCES); 334 } 335 336 /* Otherwise, check everyone else. */ 337 if (amode & VEXEC) 338 mask |= S_IXOTH; 339 if (amode & VREAD) 340 mask |= S_IROTH; 341 if (amode & VWRITE) 342 mask |= S_IWOTH; 343 return ((fmode & mask) == mask ? 0 : EACCES); 344 } 345 346 kernfs_getattr(ap) 347 struct vop_getattr_args /* { 348 struct vnode *a_vp; 349 struct vattr *a_vap; 350 struct ucred *a_cred; 351 struct proc *a_p; 352 } */ *ap; 353 { 354 struct vnode *vp = ap->a_vp; 355 struct vattr *vap = ap->a_vap; 356 struct timeval tv; 357 int error = 0; 358 char strbuf[KSTRING]; 359 360 bzero((caddr_t) vap, sizeof(*vap)); 361 vattr_null(vap); 362 vap->va_uid = 0; 363 vap->va_gid = 0; 364 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 365 vap->va_size = 0; 366 vap->va_blocksize = DEV_BSIZE; 367 microtime(&tv); 368 TIMEVAL_TO_TIMESPEC(&tv, &vap->va_atime); 369 vap->va_mtime = vap->va_atime; 370 vap->va_ctime = vap->va_ctime; 371 vap->va_gen = 0; 372 vap->va_flags = 0; 373 vap->va_rdev = 0; 374 vap->va_bytes = 0; 375 376 if (vp->v_flag & VROOT) { 377 #ifdef KERNFS_DIAGNOSTIC 378 printf("kernfs_getattr: stat rootdir\n"); 379 #endif 380 vap->va_type = VDIR; 381 vap->va_mode = DIR_MODE; 382 vap->va_nlink = 2; 383 vap->va_fileid = 2; 384 vap->va_size = DEV_BSIZE; 385 } else { 386 struct kern_target *kt = VTOKERN(vp)->kf_kt; 387 int nbytes; 388 #ifdef KERNFS_DIAGNOSTIC 389 printf("kernfs_getattr: stat target %s\n", kt->kt_name); 390 #endif 391 vap->va_type = kt->kt_vtype; 392 vap->va_mode = kt->kt_mode; 393 vap->va_nlink = 1; 394 vap->va_fileid = 1 + (kt - kern_targets) / sizeof(*kt); 395 error = kernfs_xread(kt, strbuf, sizeof(strbuf), &nbytes); 396 vap->va_size = nbytes; 397 } 398 399 #ifdef KERNFS_DIAGNOSTIC 400 printf("kernfs_getattr: return error %d\n", error); 401 #endif 402 return (error); 403 } 404 405 kernfs_setattr(ap) 406 struct vop_setattr_args /* { 407 struct vnode *a_vp; 408 struct vattr *a_vap; 409 struct ucred *a_cred; 410 struct proc *a_p; 411 } */ *ap; 412 { 413 414 /* 415 * Silently ignore attribute changes. 416 * This allows for open with truncate to have no 417 * effect until some data is written. I want to 418 * do it this way because all writes are atomic. 419 */ 420 return (0); 421 } 422 423 static int 424 kernfs_read(ap) 425 struct vop_read_args /* { 426 struct vnode *a_vp; 427 struct uio *a_uio; 428 int a_ioflag; 429 struct ucred *a_cred; 430 } */ *ap; 431 { 432 struct vnode *vp = ap->a_vp; 433 struct uio *uio = ap->a_uio; 434 struct kern_target *kt; 435 char strbuf[KSTRING]; 436 int off = uio->uio_offset; 437 int error, len; 438 char *cp; 439 440 if (vp->v_type == VDIR) 441 return (EOPNOTSUPP); 442 443 kt = VTOKERN(vp)->kf_kt; 444 445 #ifdef KERNFS_DIAGNOSTIC 446 printf("kern_read %s\n", kt->kt_name); 447 #endif 448 449 len = 0; 450 if (error = kernfs_xread(kt, strbuf, sizeof(strbuf), &len)) 451 return (error); 452 if (len <= off) 453 return (0); 454 return (uiomove(&strbuf[off], len - off, uio)); 455 } 456 457 static int 458 kernfs_write(ap) 459 struct vop_write_args /* { 460 struct vnode *a_vp; 461 struct uio *a_uio; 462 int a_ioflag; 463 struct ucred *a_cred; 464 } */ *ap; 465 { 466 struct vnode *vp = ap->a_vp; 467 struct uio *uio = ap->a_uio; 468 struct kern_target *kt; 469 int error, xlen; 470 char strbuf[KSTRING]; 471 472 if (vp->v_type == VDIR) 473 return (EOPNOTSUPP); 474 475 kt = VTOKERN(vp)->kf_kt; 476 477 if (uio->uio_offset != 0) 478 return (EINVAL); 479 480 xlen = min(uio->uio_resid, KSTRING-1); 481 if (error = uiomove(strbuf, xlen, uio)) 482 return (error); 483 484 if (uio->uio_resid != 0) 485 return (EIO); 486 487 strbuf[xlen] = '\0'; 488 xlen = strlen(strbuf); 489 return (kernfs_xwrite(kt, strbuf, xlen)); 490 } 491 492 kernfs_readdir(ap) 493 struct vop_readdir_args /* { 494 struct vnode *a_vp; 495 struct uio *a_uio; 496 struct ucred *a_cred; 497 int *a_eofflag; 498 u_long *a_cookies; 499 int a_ncookies; 500 } */ *ap; 501 { 502 int error, i; 503 struct uio *uio = ap->a_uio; 504 struct kern_target *kt; 505 struct dirent d; 506 507 if (ap->a_vp->v_type != VDIR) 508 return (ENOTDIR); 509 510 /* 511 * We don't allow exporting kernfs mounts, and currently local 512 * requests do not need cookies. 513 */ 514 if (ap->a_ncookies != NULL) 515 panic("kernfs_readdir: not hungry"); 516 517 i = uio->uio_offset / UIO_MX; 518 error = 0; 519 for (kt = &kern_targets[i]; 520 uio->uio_resid >= UIO_MX && i < nkern_targets; kt++, i++) { 521 struct dirent *dp = &d; 522 #ifdef KERNFS_DIAGNOSTIC 523 printf("kernfs_readdir: i = %d\n", i); 524 #endif 525 526 if (kt->kt_tag == KTT_DEVICE) { 527 dev_t *dp = kt->kt_data; 528 struct vnode *fvp; 529 530 if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) 531 continue; 532 } 533 534 bzero((caddr_t)dp, UIO_MX); 535 dp->d_namlen = kt->kt_namlen; 536 bcopy(kt->kt_name, dp->d_name, kt->kt_namlen+1); 537 538 #ifdef KERNFS_DIAGNOSTIC 539 printf("kernfs_readdir: name = %s, len = %d\n", 540 dp->d_name, dp->d_namlen); 541 #endif 542 /* 543 * Fill in the remaining fields 544 */ 545 dp->d_reclen = UIO_MX; 546 dp->d_fileno = i + 3; 547 dp->d_type = kt->kt_type; 548 /* 549 * And ship to userland 550 */ 551 if (error = uiomove((caddr_t)dp, UIO_MX, uio)) 552 break; 553 } 554 555 uio->uio_offset = i * UIO_MX; 556 557 return (error); 558 } 559 560 kernfs_inactive(ap) 561 struct vop_inactive_args /* { 562 struct vnode *a_vp; 563 struct proc *a_p; 564 } */ *ap; 565 { 566 struct vnode *vp = ap->a_vp; 567 568 #ifdef KERNFS_DIAGNOSTIC 569 printf("kernfs_inactive(%x)\n", vp); 570 #endif 571 /* 572 * Clear out the v_type field to avoid 573 * nasty things happening in vgone(). 574 */ 575 VOP_UNLOCK(vp, 0, ap->a_p); 576 vp->v_type = VNON; 577 return (0); 578 } 579 580 kernfs_reclaim(ap) 581 struct vop_reclaim_args /* { 582 struct vnode *a_vp; 583 } */ *ap; 584 { 585 struct vnode *vp = ap->a_vp; 586 587 #ifdef KERNFS_DIAGNOSTIC 588 printf("kernfs_reclaim(%x)\n", vp); 589 #endif 590 if (vp->v_data) { 591 FREE(vp->v_data, M_TEMP); 592 vp->v_data = 0; 593 } 594 return (0); 595 } 596 597 /* 598 * Return POSIX pathconf information applicable to special devices. 599 */ 600 kernfs_pathconf(ap) 601 struct vop_pathconf_args /* { 602 struct vnode *a_vp; 603 int a_name; 604 int *a_retval; 605 } */ *ap; 606 { 607 608 switch (ap->a_name) { 609 case _PC_LINK_MAX: 610 *ap->a_retval = LINK_MAX; 611 return (0); 612 case _PC_MAX_CANON: 613 *ap->a_retval = MAX_CANON; 614 return (0); 615 case _PC_MAX_INPUT: 616 *ap->a_retval = MAX_INPUT; 617 return (0); 618 case _PC_PIPE_BUF: 619 *ap->a_retval = PIPE_BUF; 620 return (0); 621 case _PC_CHOWN_RESTRICTED: 622 *ap->a_retval = 1; 623 return (0); 624 case _PC_VDISABLE: 625 *ap->a_retval = _POSIX_VDISABLE; 626 return (0); 627 default: 628 return (EINVAL); 629 } 630 /* NOTREACHED */ 631 } 632 633 /* 634 * Print out the contents of a /dev/fd vnode. 635 */ 636 /* ARGSUSED */ 637 kernfs_print(ap) 638 struct vop_print_args /* { 639 struct vnode *a_vp; 640 } */ *ap; 641 { 642 643 printf("tag VT_KERNFS, kernfs vnode\n"); 644 return (0); 645 } 646 647 /*void*/ 648 kernfs_vfree(ap) 649 struct vop_vfree_args /* { 650 struct vnode *a_pvp; 651 ino_t a_ino; 652 int a_mode; 653 } */ *ap; 654 { 655 656 return (0); 657 } 658 659 /* 660 * /dev/fd "should never get here" operation 661 */ 662 kernfs_badop() 663 { 664 665 panic("kernfs: bad op"); 666 /* NOTREACHED */ 667 } 668 669 /* 670 * kernfs vnode null operation 671 */ 672 kernfs_nullop() 673 { 674 675 return (0); 676 } 677 678 #define kernfs_create ((int (*) __P((struct vop_create_args *)))eopnotsupp) 679 #define kernfs_mknod ((int (*) __P((struct vop_mknod_args *)))eopnotsupp) 680 #define kernfs_close ((int (*) __P((struct vop_close_args *)))nullop) 681 #define kernfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))eopnotsupp) 682 #define kernfs_select ((int (*) __P((struct vop_select_args *)))eopnotsupp) 683 #define kernfs_revoke vop_revoke 684 #define kernfs_mmap ((int (*) __P((struct vop_mmap_args *)))eopnotsupp) 685 #define kernfs_fsync ((int (*) __P((struct vop_fsync_args *)))nullop) 686 #define kernfs_seek ((int (*) __P((struct vop_seek_args *)))nullop) 687 #define kernfs_remove ((int (*) __P((struct vop_remove_args *)))eopnotsupp) 688 #define kernfs_link ((int (*) __P((struct vop_link_args *)))eopnotsupp) 689 #define kernfs_rename ((int (*) __P((struct vop_rename_args *)))eopnotsupp) 690 #define kernfs_mkdir ((int (*) __P((struct vop_mkdir_args *)))eopnotsupp) 691 #define kernfs_rmdir ((int (*) __P((struct vop_rmdir_args *)))eopnotsupp) 692 #define kernfs_symlink ((int (*) __P((struct vop_symlink_args *)))eopnotsupp) 693 #define kernfs_readlink ((int (*) __P((struct vop_readlink_args *)))eopnotsupp) 694 #define kernfs_abortop ((int (*) __P((struct vop_abortop_args *)))nullop) 695 #define kernfs_lock ((int (*) __P((struct vop_lock_args *)))vop_nolock) 696 #define kernfs_unlock ((int (*) __P((struct vop_unlock_args *)))vop_nounlock) 697 #define kernfs_bmap ((int (*) __P((struct vop_bmap_args *)))kernfs_badop) 698 #define kernfs_strategy \ 699 ((int (*) __P((struct vop_strategy_args *)))kernfs_badop) 700 #define kernfs_islocked \ 701 ((int (*) __P((struct vop_islocked_args *)))vop_noislocked) 702 #define kernfs_advlock ((int (*) __P((struct vop_advlock_args *)))eopnotsupp) 703 #define kernfs_blkatoff ((int (*) __P((struct vop_blkatoff_args *)))eopnotsupp) 704 #define kernfs_valloc ((int(*) __P(( \ 705 struct vnode *pvp, \ 706 int mode, \ 707 struct ucred *cred, \ 708 struct vnode **vpp))) eopnotsupp) 709 #define kernfs_truncate ((int (*) __P((struct vop_truncate_args *)))eopnotsupp) 710 #define kernfs_update ((int (*) __P((struct vop_update_args *)))eopnotsupp) 711 #define kernfs_bwrite ((int (*) __P((struct vop_bwrite_args *)))eopnotsupp) 712 713 int (**kernfs_vnodeop_p)(); 714 struct vnodeopv_entry_desc kernfs_vnodeop_entries[] = { 715 { &vop_default_desc, vn_default_error }, 716 { &vop_lookup_desc, kernfs_lookup }, /* lookup */ 717 { &vop_create_desc, kernfs_create }, /* create */ 718 { &vop_mknod_desc, kernfs_mknod }, /* mknod */ 719 { &vop_open_desc, kernfs_open }, /* open */ 720 { &vop_close_desc, kernfs_close }, /* close */ 721 { &vop_access_desc, kernfs_access }, /* access */ 722 { &vop_getattr_desc, kernfs_getattr }, /* getattr */ 723 { &vop_setattr_desc, kernfs_setattr }, /* setattr */ 724 { &vop_read_desc, kernfs_read }, /* read */ 725 { &vop_write_desc, kernfs_write }, /* write */ 726 { &vop_ioctl_desc, kernfs_ioctl }, /* ioctl */ 727 { &vop_select_desc, kernfs_select }, /* select */ 728 { &vop_revoke_desc, kernfs_revoke }, /* revoke */ 729 { &vop_mmap_desc, kernfs_mmap }, /* mmap */ 730 { &vop_fsync_desc, kernfs_fsync }, /* fsync */ 731 { &vop_seek_desc, kernfs_seek }, /* seek */ 732 { &vop_remove_desc, kernfs_remove }, /* remove */ 733 { &vop_link_desc, kernfs_link }, /* link */ 734 { &vop_rename_desc, kernfs_rename }, /* rename */ 735 { &vop_mkdir_desc, kernfs_mkdir }, /* mkdir */ 736 { &vop_rmdir_desc, kernfs_rmdir }, /* rmdir */ 737 { &vop_symlink_desc, kernfs_symlink }, /* symlink */ 738 { &vop_readdir_desc, kernfs_readdir }, /* readdir */ 739 { &vop_readlink_desc, kernfs_readlink },/* readlink */ 740 { &vop_abortop_desc, kernfs_abortop }, /* abortop */ 741 { &vop_inactive_desc, kernfs_inactive },/* inactive */ 742 { &vop_reclaim_desc, kernfs_reclaim }, /* reclaim */ 743 { &vop_lock_desc, kernfs_lock }, /* lock */ 744 { &vop_unlock_desc, kernfs_unlock }, /* unlock */ 745 { &vop_bmap_desc, kernfs_bmap }, /* bmap */ 746 { &vop_strategy_desc, kernfs_strategy },/* strategy */ 747 { &vop_print_desc, kernfs_print }, /* print */ 748 { &vop_islocked_desc, kernfs_islocked },/* islocked */ 749 { &vop_pathconf_desc, kernfs_pathconf },/* pathconf */ 750 { &vop_advlock_desc, kernfs_advlock }, /* advlock */ 751 { &vop_blkatoff_desc, kernfs_blkatoff },/* blkatoff */ 752 { &vop_valloc_desc, kernfs_valloc }, /* valloc */ 753 { &vop_vfree_desc, kernfs_vfree }, /* vfree */ 754 { &vop_truncate_desc, kernfs_truncate },/* truncate */ 755 { &vop_update_desc, kernfs_update }, /* update */ 756 { &vop_bwrite_desc, kernfs_bwrite }, /* bwrite */ 757 { (struct vnodeop_desc*)NULL, (int(*)())NULL } 758 }; 759 struct vnodeopv_desc kernfs_vnodeop_opv_desc = 760 { &kernfs_vnodeop_p, kernfs_vnodeop_entries }; 761
Indexes created Wed Oct 01 19:09:53 GMT 2025