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sys/fs/nwfs/nwfs_vnops.c
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1 /*- 2 * Copyright (c) 1999, 2000, 2001 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: releng/5.4/sys/fs/nwfs/nwfs_vnops.c 141090 2005-01-31 23:27:04Z imp $ 33 */ 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/namei.h> 37 #include <sys/kernel.h> 38 #include <sys/bio.h> 39 #include <sys/buf.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 48 #include <machine/mutex.h> 49 50 #include <netncp/ncp.h> 51 #include <netncp/ncp_conn.h> 52 #include <netncp/ncp_subr.h> 53 #include <netncp/nwerror.h> 54 #include <netncp/ncp_nls.h> 55 56 #include <fs/nwfs/nwfs.h> 57 #include <fs/nwfs/nwfs_node.h> 58 #include <fs/nwfs/nwfs_subr.h> 59 60 /* 61 * Prototypes for NWFS vnode operations 62 */ 63 static int nwfs_create(struct vop_create_args *); 64 static int nwfs_mknod(struct vop_mknod_args *); 65 static int nwfs_open(struct vop_open_args *); 66 static int nwfs_close(struct vop_close_args *); 67 static int nwfs_access(struct vop_access_args *); 68 static int nwfs_getattr(struct vop_getattr_args *); 69 static int nwfs_setattr(struct vop_setattr_args *); 70 static int nwfs_read(struct vop_read_args *); 71 static int nwfs_write(struct vop_write_args *); 72 static int nwfs_fsync(struct vop_fsync_args *); 73 static int nwfs_remove(struct vop_remove_args *); 74 static int nwfs_link(struct vop_link_args *); 75 static int nwfs_lookup(struct vop_lookup_args *); 76 static int nwfs_rename(struct vop_rename_args *); 77 static int nwfs_mkdir(struct vop_mkdir_args *); 78 static int nwfs_rmdir(struct vop_rmdir_args *); 79 static int nwfs_symlink(struct vop_symlink_args *); 80 static int nwfs_readdir(struct vop_readdir_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_open_desc, (vop_t *) nwfs_open }, 91 { &vop_close_desc, (vop_t *) nwfs_close }, 92 { &vop_create_desc, (vop_t *) nwfs_create }, 93 { &vop_fsync_desc, (vop_t *) nwfs_fsync }, 94 { &vop_getattr_desc, (vop_t *) nwfs_getattr }, 95 { &vop_getpages_desc, (vop_t *) nwfs_getpages }, 96 { &vop_putpages_desc, (vop_t *) nwfs_putpages }, 97 { &vop_ioctl_desc, (vop_t *) nwfs_ioctl }, 98 { &vop_inactive_desc, (vop_t *) nwfs_inactive }, 99 { &vop_link_desc, (vop_t *) nwfs_link }, 100 { &vop_lookup_desc, (vop_t *) nwfs_lookup }, 101 { &vop_mkdir_desc, (vop_t *) nwfs_mkdir }, 102 { &vop_mknod_desc, (vop_t *) nwfs_mknod }, 103 { &vop_pathconf_desc, (vop_t *) nwfs_pathconf }, 104 { &vop_print_desc, (vop_t *) nwfs_print }, 105 { &vop_read_desc, (vop_t *) nwfs_read }, 106 { &vop_readdir_desc, (vop_t *) nwfs_readdir }, 107 { &vop_reclaim_desc, (vop_t *) nwfs_reclaim }, 108 { &vop_remove_desc, (vop_t *) nwfs_remove }, 109 { &vop_rename_desc, (vop_t *) nwfs_rename }, 110 { &vop_rmdir_desc, (vop_t *) nwfs_rmdir }, 111 { &vop_setattr_desc, (vop_t *) nwfs_setattr }, 112 { &vop_strategy_desc, (vop_t *) nwfs_strategy }, 113 { &vop_symlink_desc, (vop_t *) nwfs_symlink }, 114 { &vop_write_desc, (vop_t *) nwfs_write }, 115 { NULL, NULL } 116 }; 117 static struct vnodeopv_desc nwfs_vnodeop_opv_desc = 118 { &nwfs_vnodeop_p, nwfs_vnodeop_entries }; 119 120 VNODEOP_SET(nwfs_vnodeop_opv_desc); 121 122 /* 123 * nwfs_access vnode op 124 */ 125 static int 126 nwfs_access(ap) 127 struct vop_access_args /* { 128 struct vnode *a_vp; 129 int a_mode; 130 struct ucred *a_cred; 131 struct thread *td; 132 } */ *ap; 133 { 134 struct vnode *vp = ap->a_vp; 135 mode_t mpmode; 136 struct nwmount *nmp = VTONWFS(vp); 137 138 NCPVNDEBUG("\n"); 139 if ((ap->a_mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) { 140 switch (vp->v_type) { 141 case VREG: case VDIR: case VLNK: 142 return (EROFS); 143 default: 144 break; 145 } 146 } 147 mpmode = vp->v_type == VREG ? nmp->m.file_mode : 148 nmp->m.dir_mode; 149 return (vaccess(vp->v_type, mpmode, nmp->m.uid, 150 nmp->m.gid, ap->a_mode, ap->a_cred, NULL)); 151 } 152 /* 153 * nwfs_open vnode op 154 */ 155 /* ARGSUSED */ 156 static int 157 nwfs_open(ap) 158 struct vop_open_args /* { 159 struct vnode *a_vp; 160 int a_mode; 161 struct ucred *a_cred; 162 struct thread *td; 163 } */ *ap; 164 { 165 struct vnode *vp = ap->a_vp; 166 int mode = ap->a_mode; 167 struct nwnode *np = VTONW(vp); 168 struct ncp_open_info no; 169 struct nwmount *nmp = VTONWFS(vp); 170 struct vattr vattr; 171 int error, nwm; 172 173 NCPVNDEBUG("%s,%d\n", np->n_name, np->opened); 174 if (vp->v_type != VREG && vp->v_type != VDIR) { 175 NCPFATAL("open vtype = %d\n", vp->v_type); 176 return (EACCES); 177 } 178 if (vp->v_type == VDIR) return 0; /* nothing to do now */ 179 if (np->n_flag & NMODIFIED) { 180 if ((error = nwfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_td, 1)) == EINTR) 181 return (error); 182 np->n_atime = 0; 183 error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_td); 184 if (error) return (error); 185 np->n_mtime = vattr.va_mtime.tv_sec; 186 } else { 187 error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_td); 188 if (error) return (error); 189 if (np->n_mtime != vattr.va_mtime.tv_sec) { 190 if ((error = nwfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_td, 1)) == EINTR) 191 return (error); 192 np->n_mtime = vattr.va_mtime.tv_sec; 193 } 194 } 195 if (np->opened) { 196 np->opened++; 197 return 0; 198 } 199 nwm = AR_READ; 200 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 201 nwm |= AR_WRITE; 202 error = ncp_open_create_file_or_subdir(nmp, vp, 0, NULL, OC_MODE_OPEN, 203 0, nwm, &no, ap->a_td, ap->a_cred); 204 if (error) { 205 if (mode & FWRITE) 206 return EACCES; 207 nwm = AR_READ; 208 error = ncp_open_create_file_or_subdir(nmp, vp, 0, NULL, OC_MODE_OPEN, 0, 209 nwm, &no, ap->a_td, ap->a_cred); 210 } 211 if (!error) { 212 np->opened++; 213 np->n_fh = no.fh; 214 np->n_origfh = no.origfh; 215 } 216 np->n_atime = 0; 217 return (error); 218 } 219 220 static int 221 nwfs_close(ap) 222 struct vop_close_args /* { 223 struct vnodeop_desc *a_desc; 224 struct vnode *a_vp; 225 int a_fflag; 226 struct ucred *a_cred; 227 struct thread *td; 228 } */ *ap; 229 { 230 struct vnode *vp = ap->a_vp; 231 struct nwnode *np = VTONW(vp); 232 int error; 233 234 NCPVNDEBUG("name=%s,pid=%d,c=%d\n", np->n_name, ap->a_td->td_proc->p_pid, 235 np->opened); 236 237 if (vp->v_type == VDIR) return 0; /* nothing to do now */ 238 error = 0; 239 mtx_lock(&vp->v_interlock); 240 if (np->opened == 0) { 241 mtx_unlock(&vp->v_interlock); 242 return 0; 243 } 244 mtx_unlock(&vp->v_interlock); 245 error = nwfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_td, 1); 246 mtx_lock(&vp->v_interlock); 247 if (np->opened == 0) { 248 mtx_unlock(&vp->v_interlock); 249 return 0; 250 } 251 if (--np->opened == 0) { 252 mtx_unlock(&vp->v_interlock); 253 error = ncp_close_file(NWFSTOCONN(VTONWFS(vp)), &np->n_fh, 254 ap->a_td, ap->a_cred); 255 } else 256 mtx_unlock(&vp->v_interlock); 257 np->n_atime = 0; 258 return (error); 259 } 260 261 /* 262 * nwfs_getattr call from vfs. 263 */ 264 static int 265 nwfs_getattr(ap) 266 struct vop_getattr_args /* { 267 struct vnode *a_vp; 268 struct vattr *a_vap; 269 struct ucred *a_cred; 270 struct thread *td; 271 } */ *ap; 272 { 273 struct vnode *vp = ap->a_vp; 274 struct nwnode *np = VTONW(vp); 275 struct vattr *va=ap->a_vap; 276 struct nwmount *nmp = VTONWFS(vp); 277 struct nw_entry_info fattr; 278 int error; 279 u_int32_t oldsize; 280 281 NCPVNDEBUG("%lx:%d: '%s' %d\n", (long)vp, nmp->n_volume, np->n_name, (vp->v_vflag & VV_ROOT) != 0); 282 error = nwfs_attr_cachelookup(vp, va); 283 if (!error) return 0; 284 NCPVNDEBUG("not in cache\n"); 285 oldsize = np->n_size; 286 if (np->n_flag & NVOLUME) { 287 error = ncp_obtain_info(nmp, np->n_fid.f_id, 0, NULL, &fattr, 288 ap->a_td, ap->a_cred); 289 } else { 290 error = ncp_obtain_info(nmp, np->n_fid.f_parent, np->n_nmlen, 291 np->n_name, &fattr, ap->a_td, ap->a_cred); 292 } 293 if (error) { 294 NCPVNDEBUG("error %d\n", error); 295 return error; 296 } 297 nwfs_attr_cacheenter(vp, &fattr); 298 *va = np->n_vattr; 299 if (np->opened) 300 np->n_size = oldsize; 301 return (0); 302 } 303 /* 304 * nwfs_setattr call from vfs. 305 */ 306 static int 307 nwfs_setattr(ap) 308 struct vop_setattr_args /* { 309 struct vnode *a_vp; 310 struct vattr *a_vap; 311 struct ucred *a_cred; 312 struct thread *td; 313 } */ *ap; 314 { 315 struct vnode *vp = ap->a_vp; 316 struct nwnode *np = VTONW(vp); 317 struct vattr *vap = ap->a_vap; 318 u_quad_t tsize=0; 319 int error = 0; 320 321 NCPVNDEBUG("\n"); 322 if (vap->va_flags != VNOVAL) 323 return (EOPNOTSUPP); 324 /* 325 * Disallow write attempts if the filesystem is mounted read-only. 326 */ 327 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 328 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 329 vap->va_mode != (mode_t)VNOVAL) &&(vp->v_mount->mnt_flag & MNT_RDONLY)) 330 return (EROFS); 331 if (vap->va_size != VNOVAL) { 332 switch (vp->v_type) { 333 case VDIR: 334 return (EISDIR); 335 case VREG: 336 /* 337 * Disallow write attempts if the filesystem is 338 * mounted read-only. 339 */ 340 if (vp->v_mount->mnt_flag & MNT_RDONLY) 341 return (EROFS); 342 vnode_pager_setsize(vp, (u_long)vap->va_size); 343 tsize = np->n_size; 344 np->n_size = vap->va_size; 345 break; 346 default: 347 return EINVAL; 348 }; 349 } 350 error = ncp_setattr(vp, vap, ap->a_cred, ap->a_td); 351 if (error && vap->va_size != VNOVAL) { 352 np->n_size = tsize; 353 vnode_pager_setsize(vp, (u_long)tsize); 354 } 355 np->n_atime = 0; /* invalidate cache */ 356 VOP_GETATTR(vp, vap, ap->a_cred, ap->a_td); 357 np->n_mtime = vap->va_mtime.tv_sec; 358 return (0); 359 } 360 /* 361 * nwfs_read call. 362 */ 363 static int 364 nwfs_read(ap) 365 struct vop_read_args /* { 366 struct vnode *a_vp; 367 struct uio *a_uio; 368 int a_ioflag; 369 struct ucred *a_cred; 370 } */ *ap; 371 { 372 struct vnode *vp = ap->a_vp; 373 struct uio *uio=ap->a_uio; 374 int error; 375 NCPVNDEBUG("nwfs_read:\n"); 376 377 if (vp->v_type != VREG && vp->v_type != VDIR) 378 return (EPERM); 379 error = nwfs_readvnode(vp, uio, ap->a_cred); 380 return error; 381 } 382 383 static int 384 nwfs_write(ap) 385 struct vop_write_args /* { 386 struct vnode *a_vp; 387 struct uio *a_uio; 388 int a_ioflag; 389 struct ucred *a_cred; 390 } */ *ap; 391 { 392 struct vnode *vp = ap->a_vp; 393 struct uio *uio = ap->a_uio; 394 int error; 395 396 NCPVNDEBUG("%d,ofs=%d,sz=%d\n", vp->v_type, (int)uio->uio_offset, uio->uio_resid); 397 398 if (vp->v_type != VREG) 399 return (EPERM); 400 error = nwfs_writevnode(vp, uio, ap->a_cred, ap->a_ioflag); 401 return(error); 402 } 403 /* 404 * nwfs_create call 405 * Create a regular file. On entry the directory to contain the file being 406 * created is locked. We must release before we return. We must also free 407 * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or 408 * only if the SAVESTART bit in cn_flags is clear on success. 409 */ 410 static int 411 nwfs_create(ap) 412 struct vop_create_args /* { 413 struct vnode *a_dvp; 414 struct vnode **a_vpp; 415 struct componentname *a_cnp; 416 struct vattr *a_vap; 417 } */ *ap; 418 { 419 struct vnode *dvp = ap->a_dvp; 420 struct vattr *vap = ap->a_vap; 421 struct vnode **vpp=ap->a_vpp; 422 struct componentname *cnp = ap->a_cnp; 423 struct vnode *vp = (struct vnode *)0; 424 int error = 0, fmode; 425 struct vattr vattr; 426 struct nwnode *np; 427 struct ncp_open_info no; 428 struct nwmount *nmp=VTONWFS(dvp); 429 ncpfid fid; 430 431 432 NCPVNDEBUG("\n"); 433 *vpp = NULL; 434 if (vap->va_type == VSOCK) 435 return (EOPNOTSUPP); 436 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_thread))) { 437 return (error); 438 } 439 fmode = AR_READ | AR_WRITE; 440 /* if (vap->va_vaflags & VA_EXCLUSIVE) 441 fmode |= AR_DENY_READ | AR_DENY_WRITE;*/ 442 443 error = ncp_open_create_file_or_subdir(nmp, dvp, cnp->cn_namelen, cnp->cn_nameptr, 444 OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE, 445 0, fmode, &no, cnp->cn_thread, cnp->cn_cred); 446 if (!error) { 447 error = ncp_close_file(NWFSTOCONN(nmp), &no.fh, cnp->cn_thread, cnp->cn_cred); 448 fid.f_parent = VTONW(dvp)->n_fid.f_id; 449 fid.f_id = no.fattr.dirEntNum; 450 error = nwfs_nget(VTOVFS(dvp), fid, &no.fattr, dvp, &vp); 451 if (!error) { 452 np = VTONW(vp); 453 np->opened = 0; 454 *vpp = vp; 455 } 456 if (cnp->cn_flags & MAKEENTRY) 457 cache_enter(dvp, vp, cnp); 458 } 459 return (error); 460 } 461 462 /* 463 * nwfs_remove call. It isn't possible to emulate UFS behaivour because 464 * NetWare doesn't allow delete/rename operations on an opened file. 465 */ 466 static int 467 nwfs_remove(ap) 468 struct vop_remove_args /* { 469 struct vnodeop_desc *a_desc; 470 struct vnode * a_dvp; 471 struct vnode * a_vp; 472 struct componentname * a_cnp; 473 } */ *ap; 474 { 475 struct vnode *vp = ap->a_vp; 476 struct vnode *dvp = ap->a_dvp; 477 struct componentname *cnp = ap->a_cnp; 478 struct nwnode *np = VTONW(vp); 479 struct nwmount *nmp = VTONWFS(vp); 480 int error; 481 482 if (vp->v_type == VDIR || np->opened || vrefcnt(vp) != 1) 483 return EPERM; 484 cache_purge(vp); 485 error = ncp_DeleteNSEntry(nmp, VTONW(dvp)->n_fid.f_id, 486 cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_thread, cnp->cn_cred); 487 if (error == 0) 488 np->n_flag |= NSHOULDFREE; 489 else if (error == 0x899c) 490 error = EACCES; 491 return (error); 492 } 493 494 /* 495 * nwfs_file rename call 496 */ 497 static int 498 nwfs_rename(ap) 499 struct vop_rename_args /* { 500 struct vnode *a_fdvp; 501 struct vnode *a_fvp; 502 struct componentname *a_fcnp; 503 struct vnode *a_tdvp; 504 struct vnode *a_tvp; 505 struct componentname *a_tcnp; 506 } */ *ap; 507 { 508 struct vnode *fvp = ap->a_fvp; 509 struct vnode *tvp = ap->a_tvp; 510 struct vnode *fdvp = ap->a_fdvp; 511 struct vnode *tdvp = ap->a_tdvp; 512 struct componentname *tcnp = ap->a_tcnp; 513 struct componentname *fcnp = ap->a_fcnp; 514 struct nwmount *nmp=VTONWFS(fvp); 515 u_int16_t oldtype = 6; 516 int error=0; 517 518 /* Check for cross-device rename */ 519 if ((fvp->v_mount != tdvp->v_mount) || 520 (tvp && (fvp->v_mount != tvp->v_mount))) { 521 error = EXDEV; 522 goto out; 523 } 524 525 if (tvp && vrefcnt(tvp) > 1) { 526 error = EBUSY; 527 goto out; 528 } 529 if (fvp->v_type == VDIR) { 530 oldtype |= NW_TYPE_SUBDIR; 531 } else if (fvp->v_type == VREG) { 532 oldtype |= NW_TYPE_FILE; 533 } else { 534 error = EINVAL; 535 goto out; 536 } 537 if (tvp && tvp != fvp) { 538 error = ncp_DeleteNSEntry(nmp, VTONW(tdvp)->n_fid.f_id, 539 tcnp->cn_namelen, tcnp->cn_nameptr, 540 tcnp->cn_thread, tcnp->cn_cred); 541 if (error == 0x899c) error = EACCES; 542 if (error) 543 goto out_cacherem; 544 } 545 error = ncp_nsrename(NWFSTOCONN(nmp), nmp->n_volume, nmp->name_space, 546 oldtype, &nmp->m.nls, 547 VTONW(fdvp)->n_fid.f_id, fcnp->cn_nameptr, fcnp->cn_namelen, 548 VTONW(tdvp)->n_fid.f_id, tcnp->cn_nameptr, tcnp->cn_namelen, 549 tcnp->cn_thread, tcnp->cn_cred); 550 551 if (error == 0x8992) 552 error = EEXIST; 553 if (fvp->v_type == VDIR) { 554 if (tvp != NULL && tvp->v_type == VDIR) 555 cache_purge(tdvp); 556 cache_purge(fdvp); 557 } 558 out_cacherem: 559 nwfs_attr_cacheremove(fdvp); 560 nwfs_attr_cacheremove(tdvp); 561 nwfs_attr_cacheremove(fvp); 562 out: 563 if (tdvp == tvp) 564 vrele(tdvp); 565 else 566 vput(tdvp); 567 if (tvp) 568 vput(tvp); 569 vrele(fdvp); 570 vrele(fvp); 571 if (tvp) 572 nwfs_attr_cacheremove(tvp); 573 /* 574 * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry. 575 */ 576 if (error == ENOENT) 577 error = 0; 578 return (error); 579 } 580 581 /* 582 * nwfs hard link create call 583 * Netware filesystems don't know what links are. 584 */ 585 static int 586 nwfs_link(ap) 587 struct vop_link_args /* { 588 struct vnode *a_tdvp; 589 struct vnode *a_vp; 590 struct componentname *a_cnp; 591 } */ *ap; 592 { 593 return EOPNOTSUPP; 594 } 595 596 /* 597 * nwfs_symlink link create call 598 * Netware filesystems don't know what symlinks are. 599 */ 600 static int 601 nwfs_symlink(ap) 602 struct vop_symlink_args /* { 603 struct vnode *a_dvp; 604 struct vnode **a_vpp; 605 struct componentname *a_cnp; 606 struct vattr *a_vap; 607 char *a_target; 608 } */ *ap; 609 { 610 return (EOPNOTSUPP); 611 } 612 613 static int nwfs_mknod(ap) 614 struct vop_mknod_args /* { 615 } */ *ap; 616 { 617 return (EOPNOTSUPP); 618 } 619 620 /* 621 * nwfs_mkdir call 622 */ 623 static int 624 nwfs_mkdir(ap) 625 struct vop_mkdir_args /* { 626 struct vnode *a_dvp; 627 struct vnode **a_vpp; 628 struct componentname *a_cnp; 629 struct vattr *a_vap; 630 } */ *ap; 631 { 632 struct vnode *dvp = ap->a_dvp; 633 /* struct vattr *vap = ap->a_vap;*/ 634 struct componentname *cnp = ap->a_cnp; 635 int len=cnp->cn_namelen; 636 struct ncp_open_info no; 637 struct nwnode *np; 638 struct vnode *newvp = (struct vnode *)0; 639 ncpfid fid; 640 int error = 0; 641 struct vattr vattr; 642 char *name=cnp->cn_nameptr; 643 644 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_thread))) { 645 return (error); 646 } 647 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) { 648 return EEXIST; 649 } 650 if (ncp_open_create_file_or_subdir(VTONWFS(dvp), dvp, cnp->cn_namelen, 651 cnp->cn_nameptr, OC_MODE_CREATE, aDIR, 0xffff, 652 &no, cnp->cn_thread, cnp->cn_cred) != 0) { 653 error = EACCES; 654 } else { 655 error = 0; 656 } 657 if (!error) { 658 fid.f_parent = VTONW(dvp)->n_fid.f_id; 659 fid.f_id = no.fattr.dirEntNum; 660 error = nwfs_nget(VTOVFS(dvp), fid, &no.fattr, dvp, &newvp); 661 if (!error) { 662 np = VTONW(newvp); 663 newvp->v_type = VDIR; 664 *ap->a_vpp = newvp; 665 } 666 } 667 return (error); 668 } 669 670 /* 671 * nwfs_remove directory call 672 */ 673 static int 674 nwfs_rmdir(ap) 675 struct vop_rmdir_args /* { 676 struct vnode *a_dvp; 677 struct vnode *a_vp; 678 struct componentname *a_cnp; 679 } */ *ap; 680 { 681 struct vnode *vp = ap->a_vp; 682 struct vnode *dvp = ap->a_dvp; 683 struct componentname *cnp = ap->a_cnp; 684 struct nwnode *np = VTONW(vp); 685 struct nwmount *nmp = VTONWFS(vp); 686 struct nwnode *dnp = VTONW(dvp); 687 int error = EIO; 688 689 if (dvp == vp) 690 return EINVAL; 691 692 error = ncp_DeleteNSEntry(nmp, dnp->n_fid.f_id, 693 cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_thread, cnp->cn_cred); 694 if (error == 0) 695 np->n_flag |= NSHOULDFREE; 696 else if (error == NWE_DIR_NOT_EMPTY) 697 error = ENOTEMPTY; 698 dnp->n_flag |= NMODIFIED; 699 nwfs_attr_cacheremove(dvp); 700 cache_purge(dvp); 701 cache_purge(vp); 702 return (error); 703 } 704 705 /* 706 * nwfs_readdir call 707 */ 708 static int 709 nwfs_readdir(ap) 710 struct vop_readdir_args /* { 711 struct vnode *a_vp; 712 struct uio *a_uio; 713 struct ucred *a_cred; 714 int *a_eofflag; 715 u_long *a_cookies; 716 int a_ncookies; 717 } */ *ap; 718 { 719 struct vnode *vp = ap->a_vp; 720 struct uio *uio = ap->a_uio; 721 int error; 722 723 if (vp->v_type != VDIR) 724 return (EPERM); 725 if (ap->a_ncookies) { 726 printf("nwfs_readdir: no support for cookies now..."); 727 return (EOPNOTSUPP); 728 } 729 730 error = nwfs_readvnode(vp, uio, ap->a_cred); 731 return error; 732 } 733 /* ARGSUSED */ 734 static int 735 nwfs_fsync(ap) 736 struct vop_fsync_args /* { 737 struct vnodeop_desc *a_desc; 738 struct vnode * a_vp; 739 struct ucred * a_cred; 740 int a_waitfor; 741 struct thread *a_td; 742 } */ *ap; 743 { 744 /* return (nfs_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));*/ 745 return (0); 746 } 747 748 /* ARGSUSED */ 749 static 750 int nwfs_print (ap) 751 struct vop_print_args /* { 752 struct vnode *a_vp; 753 } */ *ap; 754 { 755 struct vnode *vp = ap->a_vp; 756 struct nwnode *np = VTONW(vp); 757 758 printf("\tnwfs node: name = '%s', fid = %d, pfid = %d\n", 759 np->n_name, np->n_fid.f_id, np->n_fid.f_parent); 760 return (0); 761 } 762 763 static int nwfs_pathconf (ap) 764 struct vop_pathconf_args /* { 765 struct vnode *vp; 766 int name; 767 register_t *retval; 768 } */ *ap; 769 { 770 int name=ap->a_name, error=0; 771 register_t *retval=ap->a_retval; 772 773 switch(name){ 774 case _PC_LINK_MAX: 775 *retval=0; 776 break; 777 case _PC_NAME_MAX: 778 *retval=NCP_MAX_FILENAME; /* XXX from nwfsnode */ 779 break; 780 case _PC_PATH_MAX: 781 *retval=NCP_MAXPATHLEN; /* XXX from nwfsnode */ 782 break; 783 default: 784 error=EINVAL; 785 } 786 return(error); 787 } 788 789 static int nwfs_strategy (ap) 790 struct vop_strategy_args /* { 791 struct buf *a_bp 792 } */ *ap; 793 { 794 struct buf *bp=ap->a_bp; 795 struct ucred *cr; 796 struct thread *td; 797 int error = 0; 798 799 KASSERT(ap->a_vp == ap->a_bp->b_vp, ("%s(%p != %p)", 800 __func__, ap->a_vp, ap->a_bp->b_vp)); 801 NCPVNDEBUG("\n"); 802 if (bp->b_flags & B_ASYNC) 803 td = (struct thread *)0; 804 else 805 td = curthread; /* XXX */ 806 if (bp->b_iocmd == BIO_READ) 807 cr = bp->b_rcred; 808 else 809 cr = bp->b_wcred; 810 /* 811 * If the op is asynchronous and an i/o daemon is waiting 812 * queue the request, wake it up and wait for completion 813 * otherwise just do it ourselves. 814 */ 815 if ((bp->b_flags & B_ASYNC) == 0 ) 816 error = nwfs_doio(bp, cr, td); 817 return (error); 818 } 819 820 821 /* 822 * How to keep the brain busy ... 823 * Currently lookup routine can make two lookup for vnode. This can be 824 * avoided by reorg the code. 825 */ 826 int 827 nwfs_lookup(ap) 828 struct vop_lookup_args /* { 829 struct vnodeop_desc *a_desc; 830 struct vnode *a_dvp; 831 struct vnode **a_vpp; 832 struct componentname *a_cnp; 833 } */ *ap; 834 { 835 struct componentname *cnp = ap->a_cnp; 836 struct vnode *dvp = ap->a_dvp; 837 struct vnode **vpp = ap->a_vpp; 838 int flags = cnp->cn_flags; 839 struct vnode *vp; 840 struct nwmount *nmp; 841 struct mount *mp = dvp->v_mount; 842 struct nwnode *dnp, *npp; 843 struct nw_entry_info fattr, *fap; 844 ncpfid fid; 845 int nameiop=cnp->cn_nameiop, islastcn; 846 int lockparent, wantparent, error = 0, notfound; 847 struct thread *td = cnp->cn_thread; 848 char _name[cnp->cn_namelen+1]; 849 bcopy(cnp->cn_nameptr, _name, cnp->cn_namelen); 850 _name[cnp->cn_namelen]=0; 851 852 if (dvp->v_type != VDIR) 853 return (ENOTDIR); 854 if ((flags & ISDOTDOT) && (dvp->v_vflag & VV_ROOT)) { 855 printf("nwfs_lookup: invalid '..'\n"); 856 return EIO; 857 } 858 859 NCPVNDEBUG("%d '%s' in '%s' id=d\n", nameiop, _name, 860 VTONW(dvp)->n_name/*, VTONW(dvp)->n_name*/); 861 862 islastcn = flags & ISLASTCN; 863 if (islastcn && (mp->mnt_flag & MNT_RDONLY) && (nameiop != LOOKUP)) 864 return (EROFS); 865 if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, td))) 866 return (error); 867 lockparent = flags & LOCKPARENT; 868 wantparent = flags & (LOCKPARENT|WANTPARENT); 869 nmp = VFSTONWFS(mp); 870 dnp = VTONW(dvp); 871 /* 872 printf("dvp %d:%d:%d\n", (int)mp, (int)dvp->v_vflag & VV_ROOT, (int)flags & ISDOTDOT); 873 */ 874 error = ncp_pathcheck(cnp->cn_nameptr, cnp->cn_namelen, &nmp->m.nls, 875 (nameiop == CREATE || nameiop == RENAME) && (nmp->m.nls.opt & NWHP_NOSTRICT) == 0); 876 if (error) 877 return ENOENT; 878 879 error = cache_lookup(dvp, vpp, cnp); 880 NCPVNDEBUG("cache_lookup returned %d\n", error); 881 if (error > 0) 882 return error; 883 if (error) { /* name was found */ 884 struct vattr vattr; 885 int vpid; 886 887 vp = *vpp; 888 vpid = vp->v_id; 889 if (dvp == vp) { /* lookup on current */ 890 vref(vp); 891 error = 0; 892 NCPVNDEBUG("cached '.'"); 893 } else if (flags & ISDOTDOT) { 894 VOP_UNLOCK(dvp, 0, td); /* unlock parent */ 895 error = vget(vp, LK_EXCLUSIVE, td); 896 if (!error && lockparent && islastcn) 897 error = vn_lock(dvp, LK_EXCLUSIVE, td); 898 } else { 899 error = vget(vp, LK_EXCLUSIVE, td); 900 if (!lockparent || error || !islastcn) 901 VOP_UNLOCK(dvp, 0, td); 902 } 903 if (!error) { 904 if (vpid == vp->v_id) { 905 if (!VOP_GETATTR(vp, &vattr, cnp->cn_cred, td) 906 && vattr.va_ctime.tv_sec == VTONW(vp)->n_ctime) { 907 if (nameiop != LOOKUP && islastcn) 908 cnp->cn_flags |= SAVENAME; 909 NCPVNDEBUG("use cached vnode"); 910 return (0); 911 } 912 cache_purge(vp); 913 } 914 vput(vp); 915 if (lockparent && dvp != vp && islastcn) 916 VOP_UNLOCK(dvp, 0, td); 917 } 918 error = vn_lock(dvp, LK_EXCLUSIVE, td); 919 *vpp = NULLVP; 920 if (error) 921 return (error); 922 } 923 /* not in cache, so ... */ 924 error = 0; 925 *vpp = NULLVP; 926 fap = NULL; 927 if (flags & ISDOTDOT) { 928 if (NWCMPF(&dnp->n_parent, &nmp->n_rootent)) { 929 fid = nmp->n_rootent; 930 fap = NULL; 931 notfound = 0; 932 } else { 933 error = nwfs_lookupnp(nmp, dnp->n_parent, td, &npp); 934 if (error) { 935 return error; 936 } 937 fid = dnp->n_parent; 938 fap = &fattr; 939 /*np = *npp;*/ 940 notfound = ncp_obtain_info(nmp, npp->n_dosfid, 941 0, NULL, fap, td, cnp->cn_cred); 942 } 943 } else { 944 fap = &fattr; 945 notfound = ncp_lookup(dvp, cnp->cn_namelen, cnp->cn_nameptr, 946 fap, td, cnp->cn_cred); 947 fid.f_id = fap->dirEntNum; 948 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 949 fid.f_parent = dnp->n_fid.f_parent; 950 } else 951 fid.f_parent = dnp->n_fid.f_id; 952 NCPVNDEBUG("call to ncp_lookup returned=%d\n", notfound); 953 } 954 if (notfound && notfound < 0x80 ) 955 return (notfound); /* hard error */ 956 if (notfound) { /* entry not found */ 957 /* Handle RENAME or CREATE case... */ 958 if ((nameiop == CREATE || nameiop == RENAME) && wantparent && islastcn) { 959 cnp->cn_flags |= SAVENAME; 960 if (!lockparent) 961 VOP_UNLOCK(dvp, 0, td); 962 return (EJUSTRETURN); 963 } 964 return ENOENT; 965 }/* else { 966 NCPVNDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 967 }*/ 968 /* handle DELETE case ... */ 969 if (nameiop == DELETE && islastcn) { /* delete last component */ 970 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, cnp->cn_thread); 971 if (error) return (error); 972 if (NWCMPF(&dnp->n_fid, &fid)) { /* we found ourselfs */ 973 VREF(dvp); 974 *vpp = dvp; 975 return 0; 976 } 977 error = nwfs_nget(mp, fid, fap, dvp, &vp); 978 if (error) return (error); 979 *vpp = vp; 980 cnp->cn_flags |= SAVENAME; /* I free it later */ 981 if (!lockparent) VOP_UNLOCK(dvp, 0, td); 982 return (0); 983 } 984 if (nameiop == RENAME && islastcn && wantparent) { 985 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, cnp->cn_thread); 986 if (error) return (error); 987 if (NWCMPF(&dnp->n_fid, &fid)) return EISDIR; 988 error = nwfs_nget(mp, fid, fap, dvp, &vp); 989 if (error) return (error); 990 *vpp = vp; 991 cnp->cn_flags |= SAVENAME; 992 if (!lockparent) 993 VOP_UNLOCK(dvp, 0, td); 994 return (0); 995 } 996 if (flags & ISDOTDOT) { 997 VOP_UNLOCK(dvp, 0, td); /* race to get the inode */ 998 error = nwfs_nget(mp, fid, NULL, NULL, &vp); 999 if (error) { 1000 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY, td); 1001 return (error); 1002 } 1003 if (lockparent && islastcn && 1004 (error = vn_lock(dvp, LK_EXCLUSIVE, td))) { 1005 vput(vp); 1006 return (error); 1007 } 1008 *vpp = vp; 1009 } else if (NWCMPF(&dnp->n_fid, &fid)) { 1010 vref(dvp); 1011 *vpp = dvp; 1012 } else { 1013 error = nwfs_nget(mp, fid, fap, dvp, &vp); 1014 if (error) return (error); 1015 *vpp = vp; 1016 NCPVNDEBUG("lookup: getnewvp!\n"); 1017 if (!lockparent || !islastcn) 1018 VOP_UNLOCK(dvp, 0, td); 1019 } 1020 if ((cnp->cn_flags & MAKEENTRY)/* && !islastcn*/) { 1021 VTONW(*vpp)->n_ctime = VTONW(*vpp)->n_vattr.va_ctime.tv_sec; 1022 cache_enter(dvp, *vpp, cnp); 1023 } 1024 return (0); 1025 }
Cache object: 87d42686eae2f9eb5df7e5dda63f45d7
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