Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/nwfs/nwfs_vnops.c
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1 /* 2 * Copyright (c) 1999, 2000 Boris Popov 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Boris Popov. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD$ 33 */ 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/namei.h> 37 #include <sys/kernel.h> 38 #include <sys/buf.h> 39 #include <sys/proc.h> 40 #include <sys/fcntl.h> 41 #include <sys/mount.h> 42 #include <sys/unistd.h> 43 #include <sys/vnode.h> 44 45 #include <vm/vm.h> 46 #include <vm/vm_extern.h> 47 #include <vm/vm_zone.h> 48 49 #include <netncp/ncp.h> 50 #include <netncp/ncp_conn.h> 51 #include <netncp/ncp_subr.h> 52 #include <netncp/nwerror.h> 53 #include <netncp/ncp_nls.h> 54 55 #include <nwfs/nwfs.h> 56 #include <nwfs/nwfs_node.h> 57 #include <nwfs/nwfs_subr.h> 58 59 /* 60 * Prototypes for NWFS vnode operations 61 */ 62 static int nwfs_create(struct vop_create_args *); 63 static int nwfs_mknod(struct vop_mknod_args *); 64 static int nwfs_open(struct vop_open_args *); 65 static int nwfs_close(struct vop_close_args *); 66 static int nwfs_access(struct vop_access_args *); 67 static int nwfs_getattr(struct vop_getattr_args *); 68 static int nwfs_setattr(struct vop_setattr_args *); 69 static int nwfs_read(struct vop_read_args *); 70 static int nwfs_write(struct vop_write_args *); 71 static int nwfs_fsync(struct vop_fsync_args *); 72 static int nwfs_remove(struct vop_remove_args *); 73 static int nwfs_link(struct vop_link_args *); 74 static int nwfs_lookup(struct vop_lookup_args *); 75 static int nwfs_rename(struct vop_rename_args *); 76 static int nwfs_mkdir(struct vop_mkdir_args *); 77 static int nwfs_rmdir(struct vop_rmdir_args *); 78 static int nwfs_symlink(struct vop_symlink_args *); 79 static int nwfs_readdir(struct vop_readdir_args *); 80 static int nwfs_bmap(struct vop_bmap_args *); 81 static int nwfs_strategy(struct vop_strategy_args *); 82 static int nwfs_print(struct vop_print_args *); 83 static int nwfs_pathconf(struct vop_pathconf_args *ap); 84 85 /* Global vfs data structures for nwfs */ 86 vop_t **nwfs_vnodeop_p; 87 static struct vnodeopv_entry_desc nwfs_vnodeop_entries[] = { 88 { &vop_default_desc, (vop_t *) vop_defaultop }, 89 { &vop_access_desc, (vop_t *) nwfs_access }, 90 { &vop_bmap_desc, (vop_t *) nwfs_bmap }, 91 { &vop_open_desc, (vop_t *) nwfs_open }, 92 { &vop_close_desc, (vop_t *) nwfs_close }, 93 { &vop_create_desc, (vop_t *) nwfs_create }, 94 { &vop_fsync_desc, (vop_t *) nwfs_fsync }, 95 { &vop_getattr_desc, (vop_t *) nwfs_getattr }, 96 { &vop_getpages_desc, (vop_t *) nwfs_getpages }, 97 { &vop_putpages_desc, (vop_t *) nwfs_putpages }, 98 { &vop_ioctl_desc, (vop_t *) nwfs_ioctl }, 99 { &vop_inactive_desc, (vop_t *) nwfs_inactive }, 100 { &vop_islocked_desc, (vop_t *) vop_stdislocked }, 101 { &vop_link_desc, (vop_t *) nwfs_link }, 102 { &vop_lock_desc, (vop_t *) vop_stdlock }, 103 { &vop_lookup_desc, (vop_t *) nwfs_lookup }, 104 { &vop_mkdir_desc, (vop_t *) nwfs_mkdir }, 105 { &vop_mknod_desc, (vop_t *) nwfs_mknod }, 106 { &vop_pathconf_desc, (vop_t *) nwfs_pathconf }, 107 { &vop_print_desc, (vop_t *) nwfs_print }, 108 { &vop_read_desc, (vop_t *) nwfs_read }, 109 { &vop_readdir_desc, (vop_t *) nwfs_readdir }, 110 { &vop_reclaim_desc, (vop_t *) nwfs_reclaim }, 111 { &vop_remove_desc, (vop_t *) nwfs_remove }, 112 { &vop_rename_desc, (vop_t *) nwfs_rename }, 113 { &vop_rmdir_desc, (vop_t *) nwfs_rmdir }, 114 { &vop_setattr_desc, (vop_t *) nwfs_setattr }, 115 { &vop_strategy_desc, (vop_t *) nwfs_strategy }, 116 { &vop_symlink_desc, (vop_t *) nwfs_symlink }, 117 { &vop_unlock_desc, (vop_t *) vop_stdunlock }, 118 { &vop_write_desc, (vop_t *) nwfs_write }, 119 { NULL, NULL } 120 }; 121 static struct vnodeopv_desc nwfs_vnodeop_opv_desc = 122 { &nwfs_vnodeop_p, nwfs_vnodeop_entries }; 123 124 VNODEOP_SET(nwfs_vnodeop_opv_desc); 125 126 /* 127 * nwfs_access vnode op 128 * for now just return ok 129 */ 130 static int 131 nwfs_access(ap) 132 struct vop_access_args /* { 133 struct vnode *a_vp; 134 int a_mode; 135 struct ucred *a_cred; 136 struct proc *a_p; 137 } */ *ap; 138 { 139 struct vnode *vp = ap->a_vp; 140 struct ucred *cred = ap->a_cred; 141 u_int mode = ap->a_mode; 142 struct nwmount *nmp = VTONWFS(vp); 143 int error = 0; 144 145 NCPVNDEBUG("\n"); 146 if ((ap->a_mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) { 147 switch (vp->v_type) { 148 case VREG: case VDIR: case VLNK: 149 return (EROFS); 150 default: 151 break; 152 } 153 } 154 if (cred->cr_uid == 0) 155 return 0; 156 if (cred->cr_uid != nmp->m.uid) { 157 mode >>= 3; 158 if (!groupmember(nmp->m.gid, cred)) 159 mode >>= 3; 160 } 161 error = (((vp->v_type == VREG) ? nmp->m.file_mode : nmp->m.dir_mode) & mode) == mode ? 0 : EACCES; 162 return error; 163 } 164 /* 165 * nwfs_open vnode op 166 */ 167 /* ARGSUSED */ 168 static int 169 nwfs_open(ap) 170 struct vop_open_args /* { 171 struct vnode *a_vp; 172 int a_mode; 173 struct ucred *a_cred; 174 struct proc *a_p; 175 } */ *ap; 176 { 177 struct vnode *vp = ap->a_vp; 178 int mode = ap->a_mode; 179 struct nwnode *np = VTONW(vp); 180 struct ncp_open_info no; 181 struct nwmount *nmp = VTONWFS(vp); 182 struct vattr vattr; 183 int error, nwm; 184 185 NCPVNDEBUG("%s,%d\n",np->n_name, np->opened); 186 if (vp->v_type != VREG && vp->v_type != VDIR) { 187 NCPFATAL("open vtype = %d\n", vp->v_type); 188 return (EACCES); 189 } 190 if (vp->v_type == VDIR) return 0; /* nothing to do now */ 191 if (np->n_flag & NMODIFIED) { 192 if ((error = nwfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p, 1)) == EINTR) 193 return (error); 194 np->n_atime = 0; 195 error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p); 196 if (error) return (error); 197 np->n_mtime = vattr.va_mtime.tv_sec; 198 } else { 199 error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p); 200 if (error) return (error); 201 if (np->n_mtime != vattr.va_mtime.tv_sec) { 202 if ((error = nwfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p, 1)) == EINTR) 203 return (error); 204 np->n_mtime = vattr.va_mtime.tv_sec; 205 } 206 } 207 if (np->opened) { 208 np->opened++; 209 return 0; 210 } 211 nwm = AR_READ; 212 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 213 nwm |= AR_WRITE; 214 error = ncp_open_create_file_or_subdir(nmp, vp, 0, NULL, OC_MODE_OPEN, 215 0, nwm, &no, ap->a_p, ap->a_cred); 216 if (error) { 217 if (mode & FWRITE) 218 return EACCES; 219 nwm = AR_READ; 220 error = ncp_open_create_file_or_subdir(nmp, vp, 0, NULL, OC_MODE_OPEN, 0, 221 nwm, &no, ap->a_p,ap->a_cred); 222 } 223 if (!error) { 224 np->opened++; 225 np->n_fh = no.fh; 226 np->n_origfh = no.origfh; 227 } 228 np->n_atime = 0; 229 return (error); 230 } 231 232 static int 233 nwfs_close(ap) 234 struct vop_close_args /* { 235 struct vnodeop_desc *a_desc; 236 struct vnode *a_vp; 237 int a_fflag; 238 struct ucred *a_cred; 239 struct proc *a_p; 240 } */ *ap; 241 { 242 struct vnode *vp = ap->a_vp; 243 struct nwnode *np = VTONW(vp); 244 int error; 245 246 NCPVNDEBUG("name=%s,pid=%d,c=%d\n",np->n_name,ap->a_p->p_pid,np->opened); 247 248 if (vp->v_type == VDIR) return 0; /* nothing to do now */ 249 error = 0; 250 simple_lock(&vp->v_interlock); 251 if (np->opened == 0) { 252 simple_unlock(&vp->v_interlock); 253 return 0; 254 } 255 simple_unlock(&vp->v_interlock); 256 error = nwfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p, 1); 257 simple_lock(&vp->v_interlock); 258 if (np->opened == 0) { 259 simple_unlock(&vp->v_interlock); 260 return 0; 261 } 262 if (--np->opened == 0) { 263 simple_unlock(&vp->v_interlock); 264 error = ncp_close_file(NWFSTOCONN(VTONWFS(vp)), &np->n_fh, 265 ap->a_p, ap->a_cred); 266 } else 267 simple_unlock(&vp->v_interlock); 268 np->n_atime = 0; 269 return (error); 270 } 271 272 /* 273 * nwfs_getattr call from vfs. 274 */ 275 static int 276 nwfs_getattr(ap) 277 struct vop_getattr_args /* { 278 struct vnode *a_vp; 279 struct vattr *a_vap; 280 struct ucred *a_cred; 281 struct proc *a_p; 282 } */ *ap; 283 { 284 struct vnode *vp = ap->a_vp; 285 struct nwnode *np = VTONW(vp); 286 struct vattr *va=ap->a_vap; 287 struct nwmount *nmp = VTONWFS(vp); 288 struct nw_entry_info fattr; 289 int error; 290 u_int32_t oldsize; 291 292 NCPVNDEBUG("%lx:%d: '%s' %d\n", (long)vp, nmp->n_volume, np->n_name, (vp->v_flag & VROOT) != 0); 293 error = nwfs_attr_cachelookup(vp,va); 294 if (!error) return 0; 295 NCPVNDEBUG("not in cache\n"); 296 oldsize = np->n_size; 297 if (np->n_flag & NVOLUME) { 298 error = ncp_obtain_info(nmp, np->n_fid.f_id, 0, NULL, &fattr, 299 ap->a_p,ap->a_cred); 300 } else { 301 error = ncp_obtain_info(nmp, np->n_fid.f_parent, np->n_nmlen, 302 np->n_name, &fattr, ap->a_p, ap->a_cred); 303 } 304 if (error) { 305 NCPVNDEBUG("error %d\n", error); 306 return error; 307 } 308 nwfs_attr_cacheenter(vp, &fattr); 309 *va = np->n_vattr; 310 if (np->opened) 311 np->n_size = oldsize; 312 return (0); 313 } 314 /* 315 * nwfs_setattr call from vfs. 316 */ 317 static int 318 nwfs_setattr(ap) 319 struct vop_setattr_args /* { 320 struct vnode *a_vp; 321 struct vattr *a_vap; 322 struct ucred *a_cred; 323 struct proc *a_p; 324 } */ *ap; 325 { 326 struct vnode *vp = ap->a_vp; 327 struct nwnode *np = VTONW(vp); 328 struct vattr *vap = ap->a_vap; 329 u_quad_t tsize=0; 330 int error = 0; 331 332 NCPVNDEBUG("\n"); 333 if (vap->va_flags != VNOVAL) 334 return (EOPNOTSUPP); 335 /* 336 * Disallow write attempts if the filesystem is mounted read-only. 337 */ 338 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 339 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 340 vap->va_mode != (mode_t)VNOVAL) &&(vp->v_mount->mnt_flag & MNT_RDONLY)) 341 return (EROFS); 342 if (vap->va_size != VNOVAL) { 343 switch (vp->v_type) { 344 case VDIR: 345 return (EISDIR); 346 case VREG: 347 /* 348 * Disallow write attempts if the filesystem is 349 * mounted read-only. 350 */ 351 if (vp->v_mount->mnt_flag & MNT_RDONLY) 352 return (EROFS); 353 vnode_pager_setsize(vp, (u_long)vap->va_size); 354 tsize = np->n_size; 355 np->n_size = vap->va_size; 356 break; 357 default: 358 return EINVAL; 359 }; 360 } 361 error = ncp_setattr(vp, vap, ap->a_cred, ap->a_p); 362 if (error && vap->va_size != VNOVAL) { 363 np->n_size = tsize; 364 vnode_pager_setsize(vp, (u_long)tsize); 365 } 366 np->n_atime = 0; /* invalidate cache */ 367 VOP_GETATTR(vp, vap, ap->a_cred, ap->a_p); 368 np->n_mtime = vap->va_mtime.tv_sec; 369 return (0); 370 } 371 /* 372 * nwfs_read call. 373 */ 374 static int 375 nwfs_read(ap) 376 struct vop_read_args /* { 377 struct vnode *a_vp; 378 struct uio *a_uio; 379 int a_ioflag; 380 struct ucred *a_cred; 381 } */ *ap; 382 { 383 struct vnode *vp = ap->a_vp; 384 struct uio *uio=ap->a_uio; 385 int error; 386 NCPVNDEBUG("nwfs_read:\n"); 387 388 if (vp->v_type != VREG && vp->v_type != VDIR) 389 return (EPERM); 390 error = nwfs_readvnode(vp, uio, ap->a_cred); 391 return error; 392 } 393 394 static int 395 nwfs_write(ap) 396 struct vop_write_args /* { 397 struct vnode *a_vp; 398 struct uio *a_uio; 399 int a_ioflag; 400 struct ucred *a_cred; 401 } */ *ap; 402 { 403 struct vnode *vp = ap->a_vp; 404 struct uio *uio = ap->a_uio; 405 int error; 406 407 NCPVNDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); 408 409 if (vp->v_type != VREG) 410 return (EPERM); 411 error = nwfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag); 412 return(error); 413 } 414 /* 415 * nwfs_create call 416 * Create a regular file. On entry the directory to contain the file being 417 * created is locked. We must release before we return. We must also free 418 * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or 419 * only if the SAVESTART bit in cn_flags is clear on success. 420 */ 421 static int 422 nwfs_create(ap) 423 struct vop_create_args /* { 424 struct vnode *a_dvp; 425 struct vnode **a_vpp; 426 struct componentname *a_cnp; 427 struct vattr *a_vap; 428 } */ *ap; 429 { 430 struct vnode *dvp = ap->a_dvp; 431 struct vattr *vap = ap->a_vap; 432 struct vnode **vpp=ap->a_vpp; 433 struct componentname *cnp = ap->a_cnp; 434 struct vnode *vp = (struct vnode *)0; 435 int error = 0, fmode; 436 struct vattr vattr; 437 struct nwnode *np; 438 struct ncp_open_info no; 439 struct nwmount *nmp=VTONWFS(dvp); 440 ncpfid fid; 441 442 443 NCPVNDEBUG("\n"); 444 *vpp = NULL; 445 if (vap->va_type == VSOCK) 446 return (EOPNOTSUPP); 447 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_proc))) { 448 return (error); 449 } 450 fmode = AR_READ | AR_WRITE; 451 /* if (vap->va_vaflags & VA_EXCLUSIVE) 452 fmode |= AR_DENY_READ | AR_DENY_WRITE;*/ 453 454 error = ncp_open_create_file_or_subdir(nmp,dvp,cnp->cn_namelen,cnp->cn_nameptr, 455 OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE, 456 0, fmode, &no, cnp->cn_proc, cnp->cn_cred); 457 if (!error) { 458 error = ncp_close_file(NWFSTOCONN(nmp), &no.fh, cnp->cn_proc,cnp->cn_cred); 459 fid.f_parent = VTONW(dvp)->n_fid.f_id; 460 fid.f_id = no.fattr.dirEntNum; 461 error = nwfs_nget(VTOVFS(dvp), fid, &no.fattr, dvp, &vp); 462 if (!error) { 463 np = VTONW(vp); 464 np->opened = 0; 465 *vpp = vp; 466 } 467 if (cnp->cn_flags & MAKEENTRY) 468 cache_enter(dvp, vp, cnp); 469 } 470 return (error); 471 } 472 473 /* 474 * nwfs_remove call. It isn't possible to emulate UFS behaivour because 475 * NetWare doesn't allow delete/rename operations on an opened file. 476 */ 477 static int 478 nwfs_remove(ap) 479 struct vop_remove_args /* { 480 struct vnodeop_desc *a_desc; 481 struct vnode * a_dvp; 482 struct vnode * a_vp; 483 struct componentname * a_cnp; 484 } */ *ap; 485 { 486 struct vnode *vp = ap->a_vp; 487 struct vnode *dvp = ap->a_dvp; 488 struct componentname *cnp = ap->a_cnp; 489 struct nwnode *np = VTONW(vp); 490 struct nwmount *nmp = VTONWFS(vp); 491 int error; 492 493 if (vp->v_type == VDIR || np->opened || vp->v_usecount != 1) { 494 error = EPERM; 495 } else if (!ncp_conn_valid(NWFSTOCONN(nmp))) { 496 error = EIO; 497 } else { 498 cache_purge(vp); 499 error = ncp_DeleteNSEntry(nmp, VTONW(dvp)->n_fid.f_id, 500 cnp->cn_namelen,cnp->cn_nameptr,cnp->cn_proc,cnp->cn_cred); 501 if (error == 0) 502 np->n_flag |= NSHOULDFREE; 503 else if (error == 0x899c) 504 error = EACCES; 505 } 506 return (error); 507 } 508 509 /* 510 * nwfs_file rename call 511 */ 512 static int 513 nwfs_rename(ap) 514 struct vop_rename_args /* { 515 struct vnode *a_fdvp; 516 struct vnode *a_fvp; 517 struct componentname *a_fcnp; 518 struct vnode *a_tdvp; 519 struct vnode *a_tvp; 520 struct componentname *a_tcnp; 521 } */ *ap; 522 { 523 struct vnode *fvp = ap->a_fvp; 524 struct vnode *tvp = ap->a_tvp; 525 struct vnode *fdvp = ap->a_fdvp; 526 struct vnode *tdvp = ap->a_tdvp; 527 struct componentname *tcnp = ap->a_tcnp; 528 struct componentname *fcnp = ap->a_fcnp; 529 struct nwmount *nmp=VTONWFS(fvp); 530 u_int16_t oldtype = 6; 531 int error=0; 532 533 /* Check for cross-device rename */ 534 if ((fvp->v_mount != tdvp->v_mount) || 535 (tvp && (fvp->v_mount != tvp->v_mount))) { 536 error = EXDEV; 537 goto out; 538 } 539 540 if (tvp && tvp->v_usecount > 1) { 541 error = EBUSY; 542 goto out; 543 } 544 if (tvp && tvp != fvp) { 545 error = ncp_DeleteNSEntry(nmp, VTONW(tdvp)->n_fid.f_id, 546 tcnp->cn_namelen, tcnp->cn_nameptr, 547 tcnp->cn_proc, tcnp->cn_cred); 548 if (error == 0x899c) error = EACCES; 549 if (error) 550 goto out; 551 } 552 if (fvp->v_type == VDIR) { 553 oldtype |= NW_TYPE_SUBDIR; 554 } else if (fvp->v_type == VREG) { 555 oldtype |= NW_TYPE_FILE; 556 } else 557 return EINVAL; 558 error = ncp_nsrename(NWFSTOCONN(nmp), nmp->n_volume, nmp->name_space, 559 oldtype, &nmp->m.nls, 560 VTONW(fdvp)->n_fid.f_id, fcnp->cn_nameptr, fcnp->cn_namelen, 561 VTONW(tdvp)->n_fid.f_id, tcnp->cn_nameptr, tcnp->cn_namelen, 562 tcnp->cn_proc,tcnp->cn_cred); 563 564 if (error == 0x8992) 565 error = EEXIST; 566 if (fvp->v_type == VDIR) { 567 if (tvp != NULL && tvp->v_type == VDIR) 568 cache_purge(tdvp); 569 cache_purge(fdvp); 570 } 571 out: 572 if (tdvp == tvp) 573 vrele(tdvp); 574 else 575 vput(tdvp); 576 if (tvp) 577 vput(tvp); 578 vrele(fdvp); 579 vrele(fvp); 580 nwfs_attr_cacheremove(fdvp); 581 nwfs_attr_cacheremove(tdvp); 582 /* 583 * Need to get rid of old vnodes, because netware will change 584 * file id on rename 585 */ 586 vgone(fvp); 587 if (tvp) 588 vgone(tvp); 589 /* 590 * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry. 591 */ 592 if (error == ENOENT) 593 error = 0; 594 return (error); 595 } 596 597 /* 598 * nwfs hard link create call 599 * Netware filesystems don't know what links are. 600 */ 601 static int 602 nwfs_link(ap) 603 struct vop_link_args /* { 604 struct vnode *a_tdvp; 605 struct vnode *a_vp; 606 struct componentname *a_cnp; 607 } */ *ap; 608 { 609 return EOPNOTSUPP; 610 } 611 612 /* 613 * nwfs_symlink link create call 614 * Netware filesystems don't know what symlinks are. 615 */ 616 static int 617 nwfs_symlink(ap) 618 struct vop_symlink_args /* { 619 struct vnode *a_dvp; 620 struct vnode **a_vpp; 621 struct componentname *a_cnp; 622 struct vattr *a_vap; 623 char *a_target; 624 } */ *ap; 625 { 626 return (EOPNOTSUPP); 627 } 628 629 static int nwfs_mknod(ap) 630 struct vop_mknod_args /* { 631 } */ *ap; 632 { 633 return (EOPNOTSUPP); 634 } 635 636 /* 637 * nwfs_mkdir call 638 */ 639 static int 640 nwfs_mkdir(ap) 641 struct vop_mkdir_args /* { 642 struct vnode *a_dvp; 643 struct vnode **a_vpp; 644 struct componentname *a_cnp; 645 struct vattr *a_vap; 646 } */ *ap; 647 { 648 struct vnode *dvp = ap->a_dvp; 649 /* struct vattr *vap = ap->a_vap;*/ 650 struct componentname *cnp = ap->a_cnp; 651 int len=cnp->cn_namelen; 652 struct ncp_open_info no; 653 struct nwnode *np; 654 struct vnode *newvp = (struct vnode *)0; 655 ncpfid fid; 656 int error = 0; 657 struct vattr vattr; 658 char *name=cnp->cn_nameptr; 659 660 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_proc))) { 661 return (error); 662 } 663 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) { 664 return EEXIST; 665 } 666 if (ncp_open_create_file_or_subdir(VTONWFS(dvp),dvp, cnp->cn_namelen, 667 cnp->cn_nameptr,OC_MODE_CREATE, aDIR, 0xffff, 668 &no, cnp->cn_proc, cnp->cn_cred) != 0) { 669 error = EACCES; 670 } else { 671 error = 0; 672 } 673 if (!error) { 674 fid.f_parent = VTONW(dvp)->n_fid.f_id; 675 fid.f_id = no.fattr.dirEntNum; 676 error = nwfs_nget(VTOVFS(dvp), fid, &no.fattr, dvp, &newvp); 677 if (!error) { 678 np = VTONW(newvp); 679 newvp->v_type = VDIR; 680 *ap->a_vpp = newvp; 681 } 682 } 683 return (error); 684 } 685 686 /* 687 * nwfs_remove directory call 688 */ 689 static int 690 nwfs_rmdir(ap) 691 struct vop_rmdir_args /* { 692 struct vnode *a_dvp; 693 struct vnode *a_vp; 694 struct componentname *a_cnp; 695 } */ *ap; 696 { 697 struct vnode *vp = ap->a_vp; 698 struct vnode *dvp = ap->a_dvp; 699 struct componentname *cnp = ap->a_cnp; 700 struct nwnode *np = VTONW(vp); 701 struct nwmount *nmp = VTONWFS(vp); 702 struct nwnode *dnp = VTONW(dvp); 703 int error = EIO; 704 705 if (dvp == vp) 706 return EINVAL; 707 708 error = ncp_DeleteNSEntry(nmp, dnp->n_fid.f_id, 709 cnp->cn_namelen, cnp->cn_nameptr,cnp->cn_proc,cnp->cn_cred); 710 if (error == 0) 711 np->n_flag |= NSHOULDFREE; 712 else if (error == NWE_DIR_NOT_EMPTY) 713 error = ENOTEMPTY; 714 dnp->n_flag |= NMODIFIED; 715 nwfs_attr_cacheremove(dvp); 716 cache_purge(dvp); 717 cache_purge(vp); 718 return (error); 719 } 720 721 /* 722 * nwfs_readdir call 723 */ 724 static int 725 nwfs_readdir(ap) 726 struct vop_readdir_args /* { 727 struct vnode *a_vp; 728 struct uio *a_uio; 729 struct ucred *a_cred; 730 int *a_eofflag; 731 u_long *a_cookies; 732 int a_ncookies; 733 } */ *ap; 734 { 735 struct vnode *vp = ap->a_vp; 736 struct uio *uio = ap->a_uio; 737 int error; 738 739 if (vp->v_type != VDIR) 740 return (EPERM); 741 if (ap->a_ncookies) { 742 printf("nwfs_readdir: no support for cookies now..."); 743 return (EOPNOTSUPP); 744 } 745 746 error = nwfs_readvnode(vp, uio, ap->a_cred); 747 return error; 748 } 749 /* ARGSUSED */ 750 static int 751 nwfs_fsync(ap) 752 struct vop_fsync_args /* { 753 struct vnodeop_desc *a_desc; 754 struct vnode * a_vp; 755 struct ucred * a_cred; 756 int a_waitfor; 757 struct proc * a_p; 758 } */ *ap; 759 { 760 /* return (nfs_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_p, 1));*/ 761 return (0); 762 } 763 764 /* ARGSUSED */ 765 static 766 int nwfs_print (ap) 767 struct vop_print_args /* { 768 struct vnode *a_vp; 769 } */ *ap; 770 { 771 struct vnode *vp = ap->a_vp; 772 struct nwnode *np = VTONW(vp); 773 774 printf("nwfs node: name = '%s', fid = %d, pfid = %d\n", 775 np->n_name, np->n_fid.f_id, np->n_fid.f_parent); 776 return (0); 777 } 778 779 static int nwfs_pathconf (ap) 780 struct vop_pathconf_args /* { 781 struct vnode *vp; 782 int name; 783 register_t *retval; 784 } */ *ap; 785 { 786 int name=ap->a_name, error=0; 787 register_t *retval=ap->a_retval; 788 789 switch(name){ 790 case _PC_LINK_MAX: 791 *retval=0; 792 break; 793 case _PC_NAME_MAX: 794 *retval=NCP_MAX_FILENAME; /* XXX from nwfsnode */ 795 break; 796 case _PC_PATH_MAX: 797 *retval=NCP_MAXPATHLEN; /* XXX from nwfsnode */ 798 break; 799 default: 800 error=EINVAL; 801 } 802 return(error); 803 } 804 805 static int nwfs_strategy (ap) 806 struct vop_strategy_args /* { 807 struct buf *a_bp 808 } */ *ap; 809 { 810 struct buf *bp=ap->a_bp; 811 struct ucred *cr; 812 struct proc *p; 813 int error = 0; 814 815 NCPVNDEBUG("\n"); 816 if (bp->b_flags & B_PHYS) 817 panic("nwfs physio"); 818 if (bp->b_flags & B_ASYNC) 819 p = (struct proc *)0; 820 else 821 p = curproc; /* XXX */ 822 if (bp->b_flags & B_READ) 823 cr = bp->b_rcred; 824 else 825 cr = bp->b_wcred; 826 /* 827 * If the op is asynchronous and an i/o daemon is waiting 828 * queue the request, wake it up and wait for completion 829 * otherwise just do it ourselves. 830 */ 831 if ((bp->b_flags & B_ASYNC) == 0 ) 832 error = nwfs_doio(bp, cr, p); 833 return (error); 834 } 835 836 static int 837 nwfs_bmap(ap) 838 struct vop_bmap_args /* { 839 struct vnode *a_vp; 840 daddr_t a_bn; 841 struct vnode **a_vpp; 842 daddr_t *a_bnp; 843 int *a_runp; 844 int *a_runb; 845 } */ *ap; 846 { 847 struct vnode *vp = ap->a_vp; 848 849 if (ap->a_vpp != NULL) 850 *ap->a_vpp = vp; 851 if (ap->a_bnp != NULL) 852 *ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize); 853 if (ap->a_runp != NULL) 854 *ap->a_runp = 0; 855 if (ap->a_runb != NULL) 856 *ap->a_runb = 0; 857 return (0); 858 } 859 860 int 861 nwfs_nget(struct mount *mp, ncpfid fid, struct nw_entry_info *fap, 862 struct vnode *dvp, struct vnode **vpp) 863 { 864 int error; 865 struct nwnode *newnp; 866 struct vnode *vp; 867 868 *vpp = NULL; 869 error = nwfs_allocvp(mp, fid, &vp); 870 if (error) 871 return error; 872 newnp = VTONW(vp); 873 if (fap) { 874 newnp->n_attr = fap->attributes; 875 vp->v_type = newnp->n_attr & aDIR ? VDIR : VREG; 876 nwfs_attr_cacheenter(vp, fap); 877 } 878 if (dvp) { 879 newnp->n_parent = VTONW(dvp)->n_fid; 880 if ((newnp->n_flag & NNEW) && vp->v_type == VDIR) { 881 if ((dvp->v_flag & VROOT) == 0) { 882 newnp->n_refparent = 1; 883 vref(dvp); /* vhold */ 884 } 885 } 886 } else { 887 if ((newnp->n_flag & NNEW) && vp->v_type == VREG) 888 printf("new vnode '%s' borned without parent ?\n",newnp->n_name); 889 } 890 newnp->n_flag &= ~NNEW; 891 *vpp = vp; 892 return 0; 893 } 894 895 /* 896 * How to keep the brain busy ... 897 * Currently lookup routine can make two lookup for vnode. This can be 898 * avoided by reorg the code. 899 */ 900 int 901 nwfs_lookup(ap) 902 struct vop_lookup_args /* { 903 struct vnodeop_desc *a_desc; 904 struct vnode *a_dvp; 905 struct vnode **a_vpp; 906 struct componentname *a_cnp; 907 } */ *ap; 908 { 909 struct componentname *cnp = ap->a_cnp; 910 struct vnode *dvp = ap->a_dvp; 911 struct vnode **vpp = ap->a_vpp; 912 int flags = cnp->cn_flags; 913 struct vnode *vp; 914 struct nwmount *nmp; 915 struct mount *mp = dvp->v_mount; 916 struct nwnode *dnp, *npp; 917 struct nw_entry_info fattr, *fap; 918 ncpfid fid; 919 int nameiop=cnp->cn_nameiop, islastcn; 920 int lockparent, wantparent, error = 0, notfound; 921 struct proc *p = cnp->cn_proc; 922 char _name[cnp->cn_namelen+1]; 923 bcopy(cnp->cn_nameptr,_name,cnp->cn_namelen); 924 _name[cnp->cn_namelen]=0; 925 926 if (dvp->v_type != VDIR) 927 return (ENOTDIR); 928 if ((flags & ISDOTDOT) && (dvp->v_flag & VROOT)) { 929 printf("nwfs_lookup: invalid '..'\n"); 930 return EIO; 931 } 932 933 NCPVNDEBUG("%d '%s' in '%s' id=d\n", nameiop, _name, 934 VTONW(dvp)->n_name/*, VTONW(dvp)->n_name*/); 935 936 islastcn = flags & ISLASTCN; 937 if (islastcn && (mp->mnt_flag & MNT_RDONLY) && (nameiop != LOOKUP)) 938 return (EROFS); 939 if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, p))) 940 return (error); 941 lockparent = flags & LOCKPARENT; 942 wantparent = flags & (LOCKPARENT|WANTPARENT); 943 nmp = VFSTONWFS(mp); 944 dnp = VTONW(dvp); 945 /* 946 printf("dvp %d:%d:%d\n", (int)mp, (int)dvp->v_flag & VROOT, (int)flags & ISDOTDOT); 947 */ 948 error = ncp_pathcheck(cnp->cn_nameptr, cnp->cn_namelen, &nmp->m.nls, 949 (nameiop == CREATE || nameiop == RENAME) && (nmp->m.nls.opt & NWHP_NOSTRICT) == 0); 950 if (error) 951 return ENOENT; 952 953 error = cache_lookup(dvp, vpp, cnp); 954 NCPVNDEBUG("cache_lookup returned %d\n",error); 955 if (error > 0) 956 return error; 957 if (error) { /* name was found */ 958 struct vattr vattr; 959 int vpid; 960 961 vp = *vpp; 962 vpid = vp->v_id; 963 if (dvp == vp) { /* lookup on current */ 964 vref(vp); 965 error = 0; 966 NCPVNDEBUG("cached '.'"); 967 } else if (flags & ISDOTDOT) { 968 VOP_UNLOCK(dvp, 0, p); /* unlock parent */ 969 error = vget(vp, LK_EXCLUSIVE, p); 970 if (!error && lockparent && islastcn) 971 error = vn_lock(dvp, LK_EXCLUSIVE, p); 972 } else { 973 error = vget(vp, LK_EXCLUSIVE, p); 974 if (!lockparent || error || !islastcn) 975 VOP_UNLOCK(dvp, 0, p); 976 } 977 if (!error) { 978 if (vpid == vp->v_id) { 979 if (!VOP_GETATTR(vp, &vattr, cnp->cn_cred, p) 980 && vattr.va_ctime.tv_sec == VTONW(vp)->n_ctime) { 981 if (nameiop != LOOKUP && islastcn) 982 cnp->cn_flags |= SAVENAME; 983 NCPVNDEBUG("use cached vnode"); 984 return (0); 985 } 986 cache_purge(vp); 987 } 988 vput(vp); 989 if (lockparent && dvp != vp && islastcn) 990 VOP_UNLOCK(dvp, 0, p); 991 } 992 error = vn_lock(dvp, LK_EXCLUSIVE, p); 993 *vpp = NULLVP; 994 if (error) 995 return (error); 996 } 997 /* not in cache, so ... */ 998 error = 0; 999 *vpp = NULLVP; 1000 fap = NULL; 1001 if (flags & ISDOTDOT) { 1002 if (NWCMPF(&dnp->n_parent, &nmp->n_rootent)) { 1003 fid = nmp->n_rootent; 1004 fap = NULL; 1005 notfound = 0; 1006 } else { 1007 error = nwfs_lookupnp(nmp, dnp->n_parent, p, &npp); 1008 if (error) { 1009 return error; 1010 } 1011 fid = dnp->n_parent; 1012 fap = &fattr; 1013 /*np = *npp;*/ 1014 notfound = ncp_obtain_info(nmp, npp->n_dosfid, 1015 0, NULL, fap, p, cnp->cn_cred); 1016 } 1017 } else { 1018 fap = &fattr; 1019 notfound = ncp_lookup(dvp, cnp->cn_namelen, cnp->cn_nameptr, 1020 fap, p, cnp->cn_cred); 1021 fid.f_id = fap->dirEntNum; 1022 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 1023 fid.f_parent = dnp->n_fid.f_parent; 1024 } else 1025 fid.f_parent = dnp->n_fid.f_id; 1026 NCPVNDEBUG("call to ncp_lookup returned=%d\n",notfound); 1027 } 1028 if (notfound && notfound < 0x80 ) 1029 return (notfound); /* hard error */ 1030 if (notfound) { /* entry not found */ 1031 /* Handle RENAME or CREATE case... */ 1032 if ((nameiop == CREATE || nameiop == RENAME) && wantparent && islastcn) { 1033 cnp->cn_flags |= SAVENAME; 1034 if (!lockparent) 1035 VOP_UNLOCK(dvp, 0, p); 1036 return (EJUSTRETURN); 1037 } 1038 return ENOENT; 1039 }/* else { 1040 NCPVNDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 1041 }*/ 1042 /* handle DELETE case ... */ 1043 if (nameiop == DELETE && islastcn) { /* delete last component */ 1044 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, cnp->cn_proc); 1045 if (error) return (error); 1046 if (NWCMPF(&dnp->n_fid, &fid)) { /* we found ourselfs */ 1047 VREF(dvp); 1048 *vpp = dvp; 1049 return 0; 1050 } 1051 error = nwfs_nget(mp, fid, fap, dvp, &vp); 1052 if (error) return (error); 1053 *vpp = vp; 1054 cnp->cn_flags |= SAVENAME; /* I free it later */ 1055 if (!lockparent) VOP_UNLOCK(dvp,0,p); 1056 return (0); 1057 } 1058 if (nameiop == RENAME && islastcn && wantparent) { 1059 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, cnp->cn_proc); 1060 if (error) return (error); 1061 if (NWCMPF(&dnp->n_fid, &fid)) return EISDIR; 1062 error = nwfs_nget(mp, fid, fap, dvp, &vp); 1063 if (error) return (error); 1064 *vpp = vp; 1065 cnp->cn_flags |= SAVENAME; 1066 if (!lockparent) 1067 VOP_UNLOCK(dvp,0,p); 1068 return (0); 1069 } 1070 if (flags & ISDOTDOT) { 1071 VOP_UNLOCK(dvp, 0, p); /* race to get the inode */ 1072 error = nwfs_nget(mp, fid, NULL, NULL, &vp); 1073 if (error) { 1074 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY, p); 1075 return (error); 1076 } 1077 if (lockparent && islastcn && 1078 (error = vn_lock(dvp, LK_EXCLUSIVE, p))) { 1079 vput(vp); 1080 return (error); 1081 } 1082 *vpp = vp; 1083 } else if (NWCMPF(&dnp->n_fid, &fid)) { 1084 vref(dvp); 1085 *vpp = dvp; 1086 } else { 1087 error = nwfs_nget(mp, fid, fap, dvp, &vp); 1088 if (error) return (error); 1089 *vpp = vp; 1090 NCPVNDEBUG("lookup: getnewvp!\n"); 1091 if (!lockparent || !islastcn) 1092 VOP_UNLOCK(dvp, 0, p); 1093 } 1094 if ((cnp->cn_flags & MAKEENTRY)/* && !islastcn*/) { 1095 VTONW(*vpp)->n_ctime = VTONW(*vpp)->n_vattr.va_ctime.tv_sec; 1096 cache_enter(dvp, *vpp, cnp); 1097 } 1098 return (0); 1099 }
Cache object: b8fb96571d5157192549c6652c33858c
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