![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to kernfs_vnops.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Apple XNU] / XNU / bsd / miscfs / kernfs|
Return to kernfs_vnops.c CVS log | Up to [Apple XNU] / XNU / bsd / miscfs / kernfs |
1.1 ! root 1: /* ! 2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. ! 3: * ! 4: * @APPLE_LICENSE_HEADER_START@ ! 5: * ! 6: * The contents of this file constitute Original Code as defined in and ! 7: * are subject to the Apple Public Source License Version 1.1 (the ! 8: * "License"). You may not use this file except in compliance with the ! 9: * License. Please obtain a copy of the License at ! 10: * http://www.apple.com/publicsource and read it before using this file. ! 11: * ! 12: * This Original Code and all software distributed under the License are ! 13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER ! 14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, ! 15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, ! 16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the ! 17: * License for the specific language governing rights and limitations ! 18: * under the License. ! 19: * ! 20: * @APPLE_LICENSE_HEADER_END@ ! 21: */ ! 22: /* $NetBSD: kernfs_vnops.c,v 1.35 1995/02/03 16:18:46 mycroft Exp $ */ ! 23: ! 24: /* ! 25: * Copyright (c) 1992, 1993 ! 26: * The Regents of the University of California. All rights reserved. ! 27: * ! 28: * This code is derived from software donated to Berkeley by ! 29: * Jan-Simon Pendry. ! 30: * ! 31: * Redistribution and use in source and binary forms, with or without ! 32: * modification, are permitted provided that the following conditions ! 33: * are met: ! 34: * 1. Redistributions of source code must retain the above copyright ! 35: * notice, this list of conditions and the following disclaimer. ! 36: * 2. Redistributions in binary form must reproduce the above copyright ! 37: * notice, this list of conditions and the following disclaimer in the ! 38: * documentation and/or other materials provided with the distribution. ! 39: * 3. All advertising materials mentioning features or use of this software ! 40: * must display the following acknowledgement: ! 41: * This product includes software developed by the University of ! 42: * California, Berkeley and its contributors. ! 43: * 4. Neither the name of the University nor the names of its contributors ! 44: * may be used to endorse or promote products derived from this software ! 45: * without specific prior written permission. ! 46: * ! 47: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ! 48: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE ! 49: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ! 50: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE ! 51: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL ! 52: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS ! 53: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ! 54: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT ! 55: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY ! 56: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF ! 57: * SUCH DAMAGE. ! 58: * ! 59: * @(#)kernfs_vnops.c 8.9 (Berkeley) 6/15/94 ! 60: */ ! 61: ! 62: /* ! 63: * Kernel parameter filesystem (/kern) ! 64: */ ! 65: ! 66: #include <sys/param.h> ! 67: #include <sys/systm.h> ! 68: #include <sys/kernel.h> ! 69: #include <sys/vmmeter.h> ! 70: #include <sys/types.h> ! 71: #include <sys/time.h> ! 72: #include <sys/proc.h> ! 73: #include <sys/vnode.h> ! 74: #include <sys/malloc.h> ! 75: #include <sys/file.h> ! 76: #include <sys/stat.h> ! 77: #include <sys/mount.h> ! 78: #include <sys/namei.h> ! 79: #include <sys/buf.h> ! 80: #include <sys/dirent.h> ! 81: #include <sys/msgbuf.h> ! 82: #include <vfs/vfs_support.h> ! 83: #include <miscfs/kernfs/kernfs.h> ! 84: ! 85: #define KSTRING 256 /* Largest I/O available via this filesystem */ ! 86: #define UIO_MX 32 ! 87: ! 88: #define READ_MODE (S_IRUSR|S_IRGRP|S_IROTH) ! 89: #define WRITE_MODE (S_IWUSR|S_IRUSR|S_IRGRP|S_IROTH) ! 90: #define DIR_MODE (S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) ! 91: ! 92: struct kern_target { ! 93: u_char kt_type; ! 94: u_char kt_namlen; ! 95: char *kt_name; ! 96: void *kt_data; ! 97: #define KTT_NULL 1 ! 98: #define KTT_TIME 5 ! 99: #define KTT_INT 17 ! 100: #define KTT_STRING 31 ! 101: #define KTT_HOSTNAME 47 ! 102: #define KTT_AVENRUN 53 ! 103: #define KTT_DEVICE 71 ! 104: #define KTT_MSGBUF 89 ! 105: u_char kt_tag; ! 106: u_char kt_vtype; ! 107: mode_t kt_mode; ! 108: } kern_targets[] = { ! 109: /* NOTE: The name must be less than UIO_MX-16 chars in length */ ! 110: #define N(s) sizeof(s)-1, s ! 111: /* name data tag type ro/rw */ ! 112: { DT_DIR, N("."), 0, KTT_NULL, VDIR, DIR_MODE }, ! 113: { DT_DIR, N(".."), 0, KTT_NULL, VDIR, DIR_MODE }, ! 114: { DT_REG, N("boottime"), &boottime.tv_sec, KTT_INT, VREG, READ_MODE }, ! 115: { DT_REG, N("copyright"), copyright, KTT_STRING, VREG, READ_MODE }, ! 116: { DT_REG, N("hostname"), 0, KTT_HOSTNAME, VREG, WRITE_MODE }, ! 117: { DT_REG, N("hz"), &hz, KTT_INT, VREG, READ_MODE }, ! 118: { DT_REG, N("loadavg"), 0, KTT_AVENRUN, VREG, READ_MODE }, ! 119: { DT_REG, N("msgbuf"), 0, KTT_MSGBUF, VREG, READ_MODE }, ! 120: { DT_REG, N("pagesize"), &cnt.v_page_size, KTT_INT, VREG, READ_MODE }, ! 121: { DT_REG, N("physmem"), &physmem, KTT_INT, VREG, READ_MODE }, ! 122: #if 0 ! 123: { DT_DIR, N("root"), 0, KTT_NULL, VDIR, DIR_MODE }, ! 124: #endif ! 125: { DT_BLK, N("rootdev"), &rootdev, KTT_DEVICE, VBLK, READ_MODE }, ! 126: { DT_CHR, N("rrootdev"), &rrootdev, KTT_DEVICE, VCHR, READ_MODE }, ! 127: { DT_REG, N("time"), 0, KTT_TIME, VREG, READ_MODE }, ! 128: { DT_REG, N("version"), version, KTT_STRING, VREG, READ_MODE }, ! 129: #undef N ! 130: }; ! 131: static int nkern_targets = sizeof(kern_targets) / sizeof(kern_targets[0]); ! 132: ! 133: int ! 134: kernfs_xread(kt, off, bufp, len) ! 135: struct kern_target *kt; ! 136: int off; ! 137: char **bufp; ! 138: int len; ! 139: { ! 140: ! 141: switch (kt->kt_tag) { ! 142: case KTT_TIME: { ! 143: struct timeval tv; ! 144: ! 145: microtime(&tv); ! 146: sprintf(*bufp, "%d %d\n", tv.tv_sec, tv.tv_usec); ! 147: break; ! 148: } ! 149: ! 150: case KTT_INT: { ! 151: int *ip = kt->kt_data; ! 152: ! 153: sprintf(*bufp, "%d\n", *ip); ! 154: break; ! 155: } ! 156: ! 157: case KTT_STRING: { ! 158: char *cp = kt->kt_data; ! 159: ! 160: *bufp = cp; ! 161: break; ! 162: } ! 163: ! 164: case KTT_MSGBUF: { ! 165: extern struct msgbuf *msgbufp; ! 166: long n; ! 167: ! 168: if (off >= MSG_BSIZE) ! 169: return (0); ! 170: n = msgbufp->msg_bufx + off; ! 171: if (n >= MSG_BSIZE) ! 172: n -= MSG_BSIZE; ! 173: len = min(MSG_BSIZE - n, MSG_BSIZE - off); ! 174: *bufp = msgbufp->msg_bufc + n; ! 175: return (len); ! 176: } ! 177: ! 178: case KTT_HOSTNAME: { ! 179: char *cp = hostname; ! 180: int xlen = hostnamelen; ! 181: ! 182: if (xlen >= (len-2)) ! 183: return (EINVAL); ! 184: ! 185: bcopy(cp, *bufp, xlen); ! 186: (*bufp)[xlen] = '\n'; ! 187: (*bufp)[xlen+1] = '\0'; ! 188: break; ! 189: } ! 190: ! 191: case KTT_AVENRUN: ! 192: averunnable.fscale = FSCALE; ! 193: sprintf(*bufp, "%ld %ld %ld %ld\n", ! 194: averunnable.ldavg[0], averunnable.ldavg[1], ! 195: averunnable.ldavg[2], averunnable.fscale); ! 196: break; ! 197: ! 198: default: ! 199: return (0); ! 200: } ! 201: ! 202: len = strlen(*bufp); ! 203: if (len <= off) ! 204: return (0); ! 205: *bufp += off; ! 206: return (len - off); ! 207: } ! 208: ! 209: int ! 210: kernfs_xwrite(kt, buf, len) ! 211: struct kern_target *kt; ! 212: char *buf; ! 213: int len; ! 214: { ! 215: ! 216: switch (kt->kt_tag) { ! 217: case KTT_HOSTNAME: ! 218: if (buf[len-1] == '\n') ! 219: --len; ! 220: bcopy(buf, hostname, len); ! 221: hostname[len] = '\0'; ! 222: hostnamelen = len; ! 223: return (0); ! 224: ! 225: default: ! 226: return (EIO); ! 227: } ! 228: } ! 229: ! 230: ! 231: /* ! 232: * vp is the current namei directory ! 233: * ndp is the name to locate in that directory... ! 234: */ ! 235: kernfs_lookup(ap) ! 236: struct vop_lookup_args /* { ! 237: struct vnode * a_dvp; ! 238: struct vnode ** a_vpp; ! 239: struct componentname * a_cnp; ! 240: } */ *ap; ! 241: { ! 242: struct componentname *cnp = ap->a_cnp; ! 243: struct vnode **vpp = ap->a_vpp; ! 244: struct vnode *dvp = ap->a_dvp; ! 245: char *pname = cnp->cn_nameptr; ! 246: struct kern_target *kt; ! 247: struct vnode *fvp; ! 248: int error, i; ! 249: struct kernfs_node *kp; ! 250: ! 251: #ifdef KERNFS_DIAGNOSTIC ! 252: printf("kernfs_lookup(%x)\n", ap); ! 253: printf("kernfs_lookup(dp = %x, vpp = %x, cnp = %x)\n", dvp, vpp, ap->a_cnp); ! 254: printf("kernfs_lookup(%s)\n", pname); ! 255: #endif ! 256: ! 257: *vpp = NULLVP; ! 258: ! 259: if (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME) ! 260: return (EROFS); ! 261: ! 262: if (cnp->cn_namelen == 1 && *pname == '.') { ! 263: *vpp = dvp; ! 264: VREF(dvp); ! 265: /*VOP_LOCK(dvp);*/ ! 266: return (0); ! 267: } ! 268: ! 269: #if 0 ! 270: if (cnp->cn_namelen == 4 && bcmp(pname, "root", 4) == 0) { ! 271: *vpp = rootdir; ! 272: VREF(rootdir); ! 273: VOP_LOCK(rootdir); ! 274: return (0); ! 275: } ! 276: #endif ! 277: ! 278: for (kt = kern_targets, i = 0; i < nkern_targets; kt++, i++) { ! 279: if (cnp->cn_namelen == kt->kt_namlen && ! 280: bcmp(kt->kt_name, pname, cnp->cn_namelen) == 0) ! 281: goto found; ! 282: } ! 283: ! 284: #ifdef KERNFS_DIAGNOSTIC ! 285: printf("kernfs_lookup: i = %d, failed", i); ! 286: #endif ! 287: ! 288: return (cnp->cn_nameiop == LOOKUP ? ENOENT : EROFS); ! 289: ! 290: found: ! 291: if (kt->kt_tag == KTT_DEVICE) { ! 292: dev_t *dp = kt->kt_data; ! 293: loop: ! 294: if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) ! 295: return (ENOENT); ! 296: *vpp = fvp; ! 297: if (vget(fvp, 1)) ! 298: goto loop; ! 299: return (0); ! 300: } ! 301: ! 302: #ifdef KERNFS_DIAGNOSTIC ! 303: printf("kernfs_lookup: allocate new vnode\n"); ! 304: #endif ! 305: MALLOC(kp, void *, sizeof(struct kernfs_node), M_TEMP, M_WAITOK); ! 306: if (error = getnewvnode(VT_KERNFS, dvp->v_mount, kernfs_vnodeop_p, ! 307: &fvp)) { ! 308: FREE(kp, M_TEMP); ! 309: return (error); ! 310: } ! 311: ! 312: fvp->v_data = kp; ! 313: VTOKERN(fvp)->kf_kt = kt; ! 314: fvp->v_type = kt->kt_vtype; ! 315: *vpp = fvp; ! 316: ! 317: #ifdef KERNFS_DIAGNOSTIC ! 318: printf("kernfs_lookup: newvp = %x\n", fvp); ! 319: #endif ! 320: return (0); ! 321: } ! 322: ! 323: kernfs_open(ap) ! 324: struct vop_open_args /* { ! 325: struct vnode *a_vp; ! 326: int a_mode; ! 327: struct ucred *a_cred; ! 328: struct proc *a_p; ! 329: } */ *ap; ! 330: { ! 331: ! 332: /* Only need to check access permissions. */ ! 333: return (0); ! 334: } ! 335: ! 336: int ! 337: kernfs_access(ap) ! 338: struct vop_access_args /* { ! 339: struct vnode *a_vp; ! 340: int a_mode; ! 341: struct ucred *a_cred; ! 342: struct proc *a_p; ! 343: } */ *ap; ! 344: { ! 345: struct vnode *vp = ap->a_vp; ! 346: mode_t fmode = ! 347: (vp->v_flag & VROOT) ? DIR_MODE : VTOKERN(vp)->kf_kt->kt_mode; ! 348: ! 349: return (vaccess(fmode, (uid_t)0, (gid_t)0, ap->a_mode, ap->a_cred)); ! 350: } ! 351: ! 352: kernfs_getattr(ap) ! 353: struct vop_getattr_args /* { ! 354: struct vnode *a_vp; ! 355: struct vattr *a_vap; ! 356: struct ucred *a_cred; ! 357: struct proc *a_p; ! 358: } */ *ap; ! 359: { ! 360: struct vnode *vp = ap->a_vp; ! 361: struct vattr *vap = ap->a_vap; ! 362: int error = 0; ! 363: char strbuf[KSTRING], *buf; ! 364: ! 365: bzero((caddr_t) vap, sizeof(*vap)); ! 366: vattr_null(vap); ! 367: vap->va_uid = 0; ! 368: vap->va_gid = 0; ! 369: vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; ! 370: vap->va_size = 0; ! 371: vap->va_blocksize = DEV_BSIZE; ! 372: microtime(&vap->va_atime); ! 373: vap->va_mtime = vap->va_atime; ! 374: vap->va_ctime = vap->va_ctime; ! 375: vap->va_gen = 0; ! 376: vap->va_flags = 0; ! 377: vap->va_rdev = 0; ! 378: vap->va_bytes = 0; ! 379: ! 380: if (vp->v_flag & VROOT) { ! 381: #ifdef KERNFS_DIAGNOSTIC ! 382: printf("kernfs_getattr: stat rootdir\n"); ! 383: #endif ! 384: vap->va_type = VDIR; ! 385: vap->va_mode = DIR_MODE; ! 386: vap->va_nlink = 2; ! 387: vap->va_fileid = 2; ! 388: vap->va_size = DEV_BSIZE; ! 389: } else { ! 390: struct kern_target *kt = VTOKERN(vp)->kf_kt; ! 391: int nbytes, total; ! 392: #ifdef KERNFS_DIAGNOSTIC ! 393: printf("kernfs_getattr: stat target %s\n", kt->kt_name); ! 394: #endif ! 395: vap->va_type = kt->kt_vtype; ! 396: vap->va_mode = kt->kt_mode; ! 397: vap->va_nlink = 1; ! 398: vap->va_fileid = 1 + (kt - kern_targets) / sizeof(*kt); ! 399: total = 0; ! 400: while (buf = strbuf, ! 401: nbytes = kernfs_xread(kt, total, &buf, sizeof(strbuf))) ! 402: total += nbytes; ! 403: vap->va_size = total; ! 404: } ! 405: ! 406: #ifdef KERNFS_DIAGNOSTIC ! 407: printf("kernfs_getattr: return error %d\n", error); ! 408: #endif ! 409: return (error); ! 410: } ! 411: ! 412: kernfs_setattr(ap) ! 413: struct vop_setattr_args /* { ! 414: struct vnode *a_vp; ! 415: struct vattr *a_vap; ! 416: struct ucred *a_cred; ! 417: struct proc *a_p; ! 418: } */ *ap; ! 419: { ! 420: ! 421: /* ! 422: * Silently ignore attribute changes. ! 423: * This allows for open with truncate to have no ! 424: * effect until some data is written. I want to ! 425: * do it this way because all writes are atomic. ! 426: */ ! 427: return (0); ! 428: } ! 429: ! 430: int ! 431: kernfs_read(ap) ! 432: struct vop_read_args /* { ! 433: struct vnode *a_vp; ! 434: struct uio *a_uio; ! 435: int a_ioflag; ! 436: struct ucred *a_cred; ! 437: } */ *ap; ! 438: { ! 439: struct vnode *vp = ap->a_vp; ! 440: struct uio *uio = ap->a_uio; ! 441: struct kern_target *kt; ! 442: char strbuf[KSTRING], *buf; ! 443: int off, len; ! 444: int error; ! 445: ! 446: if (vp->v_type == VDIR) ! 447: return (EOPNOTSUPP); ! 448: ! 449: kt = VTOKERN(vp)->kf_kt; ! 450: ! 451: #ifdef KERNFS_DIAGNOSTIC ! 452: printf("kern_read %s\n", kt->kt_name); ! 453: #endif ! 454: ! 455: off = uio->uio_offset; ! 456: #if 0 ! 457: while (buf = strbuf, ! 458: #else ! 459: if (buf = strbuf, ! 460: #endif ! 461: len = kernfs_xread(kt, off, &buf, sizeof(strbuf))) { ! 462: if (error = uiomove(buf, len, uio)) ! 463: return (error); ! 464: off += len; ! 465: } ! 466: return (0); ! 467: } ! 468: ! 469: int ! 470: kernfs_write(ap) ! 471: struct vop_write_args /* { ! 472: struct vnode *a_vp; ! 473: struct uio *a_uio; ! 474: int a_ioflag; ! 475: struct ucred *a_cred; ! 476: } */ *ap; ! 477: { ! 478: struct vnode *vp = ap->a_vp; ! 479: struct uio *uio = ap->a_uio; ! 480: struct kern_target *kt; ! 481: int error, xlen; ! 482: char strbuf[KSTRING]; ! 483: ! 484: if (vp->v_type == VDIR) ! 485: return (EOPNOTSUPP); ! 486: ! 487: kt = VTOKERN(vp)->kf_kt; ! 488: ! 489: if (uio->uio_offset != 0) ! 490: return (EINVAL); ! 491: ! 492: xlen = min(uio->uio_resid, KSTRING-1); ! 493: if (error = uiomove(strbuf, xlen, uio)) ! 494: return (error); ! 495: ! 496: if (uio->uio_resid != 0) ! 497: return (EIO); ! 498: ! 499: strbuf[xlen] = '\0'; ! 500: xlen = strlen(strbuf); ! 501: return (kernfs_xwrite(kt, strbuf, xlen)); ! 502: } ! 503: ! 504: kernfs_readdir(ap) ! 505: struct vop_readdir_args /* { ! 506: struct vnode *a_vp; ! 507: struct uio *a_uio; ! 508: struct ucred *a_cred; ! 509: int *a_eofflag; ! 510: u_long *a_cookies; ! 511: int a_ncookies; ! 512: } */ *ap; ! 513: { ! 514: struct uio *uio = ap->a_uio; ! 515: struct kern_target *kt; ! 516: struct dirent d; ! 517: int i; ! 518: int error; ! 519: ! 520: if (ap->a_vp->v_type != VDIR) ! 521: return (ENOTDIR); ! 522: ! 523: /* ! 524: * We don't allow exporting kernfs mounts, and currently local ! 525: * requests do not need cookies. ! 526: */ ! 527: if (ap->a_ncookies != NULL) ! 528: panic("kernfs_readdir: not hungry"); ! 529: ! 530: i = uio->uio_offset / UIO_MX; ! 531: error = 0; ! 532: for (kt = &kern_targets[i]; ! 533: uio->uio_resid >= UIO_MX && i < nkern_targets; kt++, i++) { ! 534: struct dirent *dp = &d; ! 535: #ifdef KERNFS_DIAGNOSTIC ! 536: printf("kernfs_readdir: i = %d\n", i); ! 537: #endif ! 538: ! 539: if (kt->kt_tag == KTT_DEVICE) { ! 540: dev_t *dp = kt->kt_data; ! 541: struct vnode *fvp; ! 542: ! 543: if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) ! 544: continue; ! 545: } ! 546: ! 547: bzero((caddr_t)dp, UIO_MX); ! 548: dp->d_namlen = kt->kt_namlen; ! 549: bcopy(kt->kt_name, dp->d_name, kt->kt_namlen+1); ! 550: ! 551: #ifdef KERNFS_DIAGNOSTIC ! 552: printf("kernfs_readdir: name = %s, len = %d\n", ! 553: dp->d_name, dp->d_namlen); ! 554: #endif ! 555: /* ! 556: * Fill in the remaining fields ! 557: */ ! 558: dp->d_reclen = UIO_MX; ! 559: dp->d_fileno = i + 3; ! 560: dp->d_type = kt->kt_type; ! 561: /* ! 562: * And ship to userland ! 563: */ ! 564: if (error = uiomove((caddr_t)dp, UIO_MX, uio)) ! 565: break; ! 566: } ! 567: ! 568: uio->uio_offset = i * UIO_MX; ! 569: ! 570: return (error); ! 571: } ! 572: ! 573: kernfs_inactive(ap) ! 574: struct vop_inactive_args /* { ! 575: struct vnode *a_vp; ! 576: } */ *ap; ! 577: { ! 578: struct vnode *vp = ap->a_vp; ! 579: ! 580: #ifdef KERNFS_DIAGNOSTIC ! 581: printf("kernfs_inactive(%x)\n", vp); ! 582: #endif ! 583: /* ! 584: * Clear out the v_type field to avoid ! 585: * nasty things happening in vgone(). ! 586: */ ! 587: vp->v_type = VNON; ! 588: return (0); ! 589: } ! 590: ! 591: kernfs_reclaim(ap) ! 592: struct vop_reclaim_args /* { ! 593: struct vnode *a_vp; ! 594: } */ *ap; ! 595: { ! 596: struct vnode *vp = ap->a_vp; ! 597: ! 598: #ifdef KERNFS_DIAGNOSTIC ! 599: printf("kernfs_reclaim(%x)\n", vp); ! 600: #endif ! 601: if (vp->v_data) { ! 602: FREE(vp->v_data, M_TEMP); ! 603: vp->v_data = 0; ! 604: } ! 605: return (0); ! 606: } ! 607: ! 608: /* ! 609: * Return POSIX pathconf information applicable to special devices. ! 610: */ ! 611: kernfs_pathconf(ap) ! 612: struct vop_pathconf_args /* { ! 613: struct vnode *a_vp; ! 614: int a_name; ! 615: register_t *a_retval; ! 616: } */ *ap; ! 617: { ! 618: ! 619: switch (ap->a_name) { ! 620: case _PC_LINK_MAX: ! 621: *ap->a_retval = LINK_MAX; ! 622: return (0); ! 623: case _PC_MAX_CANON: ! 624: *ap->a_retval = MAX_CANON; ! 625: return (0); ! 626: case _PC_MAX_INPUT: ! 627: *ap->a_retval = MAX_INPUT; ! 628: return (0); ! 629: case _PC_PIPE_BUF: ! 630: *ap->a_retval = PIPE_BUF; ! 631: return (0); ! 632: case _PC_CHOWN_RESTRICTED: ! 633: *ap->a_retval = 1; ! 634: return (0); ! 635: case _PC_VDISABLE: ! 636: *ap->a_retval = _POSIX_VDISABLE; ! 637: return (0); ! 638: default: ! 639: return (EINVAL); ! 640: } ! 641: /* NOTREACHED */ ! 642: } ! 643: ! 644: /* ! 645: * Print out the contents of a /dev/fd vnode. ! 646: */ ! 647: /* ARGSUSED */ ! 648: kernfs_print(ap) ! 649: struct vop_print_args /* { ! 650: struct vnode *a_vp; ! 651: } */ *ap; ! 652: { ! 653: ! 654: printf("tag VT_KERNFS, kernfs vnode\n"); ! 655: return (0); ! 656: } ! 657: ! 658: /*void*/ ! 659: kernfs_vfree(ap) ! 660: struct vop_vfree_args /* { ! 661: struct vnode *a_pvp; ! 662: ino_t a_ino; ! 663: int a_mode; ! 664: } */ *ap; ! 665: { ! 666: ! 667: return (0); ! 668: } ! 669: ! 670: /* ! 671: * /dev/fd vnode unsupported operation ! 672: */ ! 673: kernfs_enotsupp() ! 674: { ! 675: ! 676: return (EOPNOTSUPP); ! 677: } ! 678: ! 679: /* ! 680: * /dev/fd "should never get here" operation ! 681: */ ! 682: kernfs_badop() ! 683: { ! 684: ! 685: panic("kernfs: bad op"); ! 686: /* NOTREACHED */ ! 687: } ! 688: ! 689: /* ! 690: * kernfs vnode null operation ! 691: */ ! 692: kernfs_nullop() ! 693: { ! 694: ! 695: return (0); ! 696: } ! 697: ! 698: #define kernfs_create ((int (*) __P((struct vop_create_args *)))kernfs_enotsupp) ! 699: #define kernfs_mknod ((int (*) __P((struct vop_mknod_args *)))kernfs_enotsupp) ! 700: #define kernfs_close ((int (*) __P((struct vop_close_args *)))nullop) ! 701: #define kernfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))kernfs_enotsupp) ! 702: #define kernfs_select ((int (*) __P((struct vop_select_args *)))kernfs_enotsupp) ! 703: #define kernfs_mmap ((int (*) __P((struct vop_mmap_args *)))kernfs_enotsupp) ! 704: #define kernfs_fsync ((int (*) __P((struct vop_fsync_args *)))nullop) ! 705: #define kernfs_seek ((int (*) __P((struct vop_seek_args *)))nullop) ! 706: #define kernfs_remove ((int (*) __P((struct vop_remove_args *)))kernfs_enotsupp) ! 707: #define kernfs_link ((int (*) __P((struct vop_link_args *)))kernfs_enotsupp) ! 708: #define kernfs_rename ((int (*) __P((struct vop_rename_args *)))kernfs_enotsupp) ! 709: #define kernfs_mkdir ((int (*) __P((struct vop_mkdir_args *)))kernfs_enotsupp) ! 710: #define kernfs_rmdir ((int (*) __P((struct vop_rmdir_args *)))kernfs_enotsupp) ! 711: #define kernfs_symlink ((int (*) __P((struct vop_symlink_args *)))kernfs_enotsupp) ! 712: #define kernfs_readlink \ ! 713: ((int (*) __P((struct vop_readlink_args *)))kernfs_enotsupp) ! 714: #define kernfs_abortop ((int (*) __P((struct vop_abortop_args *)))nullop) ! 715: #define kernfs_lock ((int (*) __P((struct vop_lock_args *)))nullop) ! 716: #define kernfs_unlock ((int (*) __P((struct vop_unlock_args *)))nullop) ! 717: #define kernfs_bmap ((int (*) __P((struct vop_bmap_args *)))kernfs_badop) ! 718: #define kernfs_strategy ((int (*) __P((struct vop_strategy_args *)))kernfs_badop) ! 719: #define kernfs_islocked ((int (*) __P((struct vop_islocked_args *)))nullop) ! 720: #define kernfs_advlock ((int (*) __P((struct vop_advlock_args *)))kernfs_enotsupp) ! 721: #define kernfs_blkatoff \ ! 722: ((int (*) __P((struct vop_blkatoff_args *)))kernfs_enotsupp) ! 723: #define kernfs_valloc ((int(*) __P(( \ ! 724: struct vnode *pvp, \ ! 725: int mode, \ ! 726: struct ucred *cred, \ ! 727: struct vnode **vpp))) kernfs_enotsupp) ! 728: #define kernfs_truncate \ ! 729: ((int (*) __P((struct vop_truncate_args *)))kernfs_enotsupp) ! 730: #define kernfs_update ((int (*) __P((struct vop_update_args *)))kernfs_enotsupp) ! 731: #define kernfs_bwrite ((int (*) __P((struct vop_bwrite_args *)))kernfs_enotsupp) ! 732: ! 733: int (**kernfs_vnodeop_p)(); ! 734: struct vnodeopv_entry_desc kernfs_vnodeop_entries[] = { ! 735: { &vop_default_desc, vn_default_error }, ! 736: { &vop_lookup_desc, kernfs_lookup }, /* lookup */ ! 737: { &vop_create_desc, kernfs_create }, /* create */ ! 738: { &vop_mknod_desc, kernfs_mknod }, /* mknod */ ! 739: { &vop_open_desc, kernfs_open }, /* open */ ! 740: { &vop_close_desc, kernfs_close }, /* close */ ! 741: { &vop_access_desc, kernfs_access }, /* access */ ! 742: { &vop_getattr_desc, kernfs_getattr }, /* getattr */ ! 743: { &vop_setattr_desc, kernfs_setattr }, /* setattr */ ! 744: { &vop_read_desc, kernfs_read }, /* read */ ! 745: { &vop_write_desc, kernfs_write }, /* write */ ! 746: { &vop_ioctl_desc, kernfs_ioctl }, /* ioctl */ ! 747: { &vop_select_desc, kernfs_select }, /* select */ ! 748: { &vop_mmap_desc, kernfs_mmap }, /* mmap */ ! 749: { &vop_fsync_desc, kernfs_fsync }, /* fsync */ ! 750: { &vop_seek_desc, kernfs_seek }, /* seek */ ! 751: { &vop_remove_desc, kernfs_remove }, /* remove */ ! 752: { &vop_link_desc, kernfs_link }, /* link */ ! 753: { &vop_rename_desc, kernfs_rename }, /* rename */ ! 754: { &vop_mkdir_desc, kernfs_mkdir }, /* mkdir */ ! 755: { &vop_rmdir_desc, kernfs_rmdir }, /* rmdir */ ! 756: { &vop_symlink_desc, kernfs_symlink }, /* symlink */ ! 757: { &vop_readdir_desc, kernfs_readdir }, /* readdir */ ! 758: { &vop_readlink_desc, kernfs_readlink },/* readlink */ ! 759: { &vop_abortop_desc, kernfs_abortop }, /* abortop */ ! 760: { &vop_inactive_desc, kernfs_inactive },/* inactive */ ! 761: { &vop_reclaim_desc, kernfs_reclaim }, /* reclaim */ ! 762: { &vop_lock_desc, kernfs_lock }, /* lock */ ! 763: { &vop_unlock_desc, kernfs_unlock }, /* unlock */ ! 764: { &vop_bmap_desc, kernfs_bmap }, /* bmap */ ! 765: { &vop_strategy_desc, kernfs_strategy },/* strategy */ ! 766: { &vop_print_desc, kernfs_print }, /* print */ ! 767: { &vop_islocked_desc, kernfs_islocked },/* islocked */ ! 768: { &vop_pathconf_desc, kernfs_pathconf },/* pathconf */ ! 769: { &vop_advlock_desc, kernfs_advlock }, /* advlock */ ! 770: { &vop_blkatoff_desc, kernfs_blkatoff },/* blkatoff */ ! 771: { &vop_valloc_desc, kernfs_valloc }, /* valloc */ ! 772: { &vop_vfree_desc, kernfs_vfree }, /* vfree */ ! 773: { &vop_truncate_desc, kernfs_truncate },/* truncate */ ! 774: { &vop_update_desc, kernfs_update }, /* update */ ! 775: { &vop_bwrite_desc, kernfs_bwrite }, /* bwrite */ ! 776: { &vop_copyfile_desc, err_copyfile }, /* Copyfile */ ! 777: { (struct vnodeop_desc*)NULL, (int(*)())NULL } ! 778: }; ! 779: struct vnodeopv_desc kernfs_vnodeop_opv_desc = ! 780: { &kernfs_vnodeop_p, kernfs_vnodeop_entries };
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.