sys/vfs/nwfs/nwfs_vnops.c

   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: src/sys/nwfs/nwfs_vnops.c,v 1.6.2.3 2001/03/14 11:26:59 bp Exp $
  33  * $DragonFly: src/sys/vfs/nwfs/nwfs_vnops.c,v 1.38 2007/11/20 21:03:50 dillon Exp $
  34  */
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/buf.h>
  39 #include <sys/proc.h>
  40 #include <sys/namei.h>
  41 #include <sys/fcntl.h>
  42 #include <sys/mount.h>
  43 #include <sys/unistd.h>
  44 #include <sys/vnode.h>
  45
  46 #include <vm/vm.h>
  47 #include <vm/vm_extern.h>
  48 #include <vm/vm_zone.h>
  49
  50 #include <netproto/ncp/ncp.h>
  51 #include <netproto/ncp/ncp_conn.h>
  52 #include <netproto/ncp/ncp_subr.h>
  53 #include <netproto/ncp/nwerror.h>
  54 #include <netproto/ncp/ncp_nls.h>
  55
  56 #include "nwfs.h"
  57 #include "nwfs_node.h"
  58 #include "nwfs_subr.h"
  59
  60 /*
  61  * Prototypes for NWFS vnode operations
  62  */
  63 static int nwfs_create(struct vop_old_create_args *);
  64 static int nwfs_mknod(struct vop_old_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_old_remove_args *);
  74 static int nwfs_link(struct vop_old_link_args *);
  75 static int nwfs_lookup(struct vop_old_lookup_args *);
  76 static int nwfs_rename(struct vop_old_rename_args *);
  77 static int nwfs_mkdir(struct vop_old_mkdir_args *);
  78 static int nwfs_rmdir(struct vop_old_rmdir_args *);
  79 static int nwfs_symlink(struct vop_old_symlink_args *);
  80 static int nwfs_readdir(struct vop_readdir_args *);
  81 static int nwfs_bmap(struct vop_bmap_args *);
  82 static int nwfs_strategy(struct vop_strategy_args *);
  83 static int nwfs_print(struct vop_print_args *);
  84 static int nwfs_pathconf(struct vop_pathconf_args *ap);
  85
  86 /* Global vfs data structures for nwfs */
  87 struct vop_ops nwfs_vnode_vops = {
  88         .vop_default =          vop_defaultop,
  89         .vop_access =           nwfs_access,
  90         .vop_bmap =             nwfs_bmap,
  91         .vop_open =             nwfs_open,
  92         .vop_close =            nwfs_close,
  93         .vop_old_create =       nwfs_create,
  94         .vop_fsync =            nwfs_fsync,
  95         .vop_getattr =          nwfs_getattr,
  96         .vop_getpages =         nwfs_getpages,
  97         .vop_putpages =         nwfs_putpages,
  98         .vop_ioctl =            nwfs_ioctl,
  99         .vop_inactive =         nwfs_inactive,
 100         .vop_old_link =         nwfs_link,
 101         .vop_old_lookup =       nwfs_lookup,
 102         .vop_old_mkdir =        nwfs_mkdir,
 103         .vop_old_mknod =        nwfs_mknod,
 104         .vop_pathconf =         nwfs_pathconf,
 105         .vop_print =            nwfs_print,
 106         .vop_read =             nwfs_read,
 107         .vop_readdir =          nwfs_readdir,
 108         .vop_reclaim =          nwfs_reclaim,
 109         .vop_old_remove =       nwfs_remove,
 110         .vop_old_rename =       nwfs_rename,
 111         .vop_old_rmdir =        nwfs_rmdir,
 112         .vop_setattr =          nwfs_setattr,
 113         .vop_strategy =         nwfs_strategy,
 114         .vop_old_symlink =      nwfs_symlink,
 115         .vop_write =            nwfs_write
 116 };
 117
 118 /*
 119  * nwfs_access vnode op
 120  *
 121  * nwfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
 122  */
 123 static int
 124 nwfs_access(struct vop_access_args *ap)
 125 {
 126         struct vnode *vp = ap->a_vp;
 127         struct nwmount *nmp = VTONWFS(vp);
 128         int error;
 129         int mode;
 130
 131         NCPVNDEBUG("\n");
 132         mode = ((vp->v_type == VREG) ?  nmp->m.file_mode : nmp->m.dir_mode);
 133         error = vop_helper_access(ap, nmp->m.uid, nmp->m.gid, mode, 0);
 134         return (error);
 135 }
 136
 137 /*
 138  * nwfs_open vnode op
 139  *
 140  * nwfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
 141  *           struct file *a_fp)
 142  */
 143 /* ARGSUSED */
 144 static int
 145 nwfs_open(struct vop_open_args *ap)
 146 {
 147         thread_t td = curthread; /* XXX */
 148         struct vnode *vp = ap->a_vp;
 149         int mode = ap->a_mode;
 150         struct nwnode *np = VTONW(vp);
 151         struct ncp_open_info no;
 152         struct nwmount *nmp = VTONWFS(vp);
 153         struct vattr vattr;
 154         int error, nwm;
 155
 156         NCPVNDEBUG("%s,%d\n",np->n_name, np->opened);
 157         if (vp->v_type != VREG && vp->v_type != VDIR) {
 158                 NCPFATAL("open vtype = %d\n", vp->v_type);
 159                 return (EACCES);
 160         }
 161         if (vp->v_type == VDIR) return 0;       /* nothing to do now */
 162         if (np->n_flag & NMODIFIED) {
 163                 if ((error = nwfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR)
 164                         return (error);
 165                 np->n_atime = 0;
 166                 error = VOP_GETATTR(vp, &vattr);
 167                 if (error)
 168                         return (error);
 169                 np->n_mtime = vattr.va_mtime.tv_sec;
 170         } else {
 171                 error = VOP_GETATTR(vp, &vattr);
 172                 if (error)
 173                         return (error);
 174                 if (np->n_mtime != vattr.va_mtime.tv_sec) {
 175                         if ((error = nwfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR)
 176                                 return (error);
 177                         np->n_mtime = vattr.va_mtime.tv_sec;
 178                 }
 179         }
 180         if (np->opened) {
 181                 np->opened++;
 182                 return (vop_stdopen(ap));
 183         }
 184         nwm = AR_READ;
 185         if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0)
 186                 nwm |= AR_WRITE;
 187         error = ncp_open_create_file_or_subdir(nmp, vp, 0, NULL, OC_MODE_OPEN,
 188                                                0, nwm, &no, td, ap->a_cred);
 189         if (error) {
 190                 if (mode & FWRITE)
 191                         return EACCES;
 192                 nwm = AR_READ;
 193                 error = ncp_open_create_file_or_subdir(nmp, vp, 0, NULL, OC_MODE_OPEN, 0,
 194                                                    nwm, &no, td, ap->a_cred);
 195         }
 196         np->n_atime = 0;
 197         if (error == 0) {
 198                 np->opened++;
 199                 np->n_fh = no.fh;
 200                 np->n_origfh = no.origfh;
 201                 error = vop_stdopen(ap);
 202         }
 203         return (error);
 204 }
 205
 206 /*
 207  * nwfs_close(struct vnode *a_vp, int a_fflag)
 208  */
 209 static int
 210 nwfs_close(struct vop_close_args *ap)
 211 {
 212         thread_t td = curthread; /* XXX */
 213         struct vnode *vp = ap->a_vp;
 214         struct nwnode *np = VTONW(vp);
 215         int error;
 216
 217         NCPVNDEBUG("name=%s,td=%p,c=%d\n",np->n_name,ap->a_td,np->opened);
 218
 219         error = 0;
 220         if (vp->v_type == VDIR)
 221                 goto done;
 222         if (np->opened == 0)
 223                 goto done;
 224         error = nwfs_vinvalbuf(vp, V_SAVE, 1);
 225         if (np->opened == 0) {
 226                 error = 0;      /* huh? */
 227                 goto done;
 228         }
 229         if (--np->opened == 0) {
 230                 error = ncp_close_file(NWFSTOCONN(VTONWFS(vp)), &np->n_fh,
 231                    td, proc0.p_ucred);
 232         }
 233         np->n_atime = 0;
 234 done:
 235         vop_stdclose(ap);
 236         return (error);
 237 }
 238
 239 /*
 240  * nwfs_getattr call from vfs.
 241  *
 242  * nwfs_getattr(struct vnode *a_vp, struct vattr *a_vap)
 243  */
 244 static int
 245 nwfs_getattr(struct vop_getattr_args *ap)
 246 {
 247         thread_t td = curthread; /* XXX */
 248         struct vnode *vp = ap->a_vp;
 249         struct nwnode *np = VTONW(vp);
 250         struct vattr *va=ap->a_vap;
 251         struct nwmount *nmp = VTONWFS(vp);
 252         struct nw_entry_info fattr;
 253         int error;
 254         u_int32_t oldsize;
 255
 256         NCPVNDEBUG("%lx:%d: '%s' %d\n", (long)vp, nmp->n_volume, np->n_name, (vp->v_flag & VROOT) != 0);
 257         error = nwfs_attr_cachelookup(vp,va);
 258         if (!error) return 0;
 259         NCPVNDEBUG("not in cache\n");
 260         oldsize = np->n_size;
 261         if (np->n_flag & NVOLUME) {
 262                 error = ncp_obtain_info(nmp, np->n_fid.f_id, 0, NULL, &fattr,
 263                     td,proc0.p_ucred);
 264         } else {
 265                 error = ncp_obtain_info(nmp, np->n_fid.f_parent, np->n_nmlen,
 266                     np->n_name, &fattr, td, proc0.p_ucred);
 267         }
 268         if (error) {
 269                 NCPVNDEBUG("error %d\n", error);
 270                 return error;
 271         }
 272         nwfs_attr_cacheenter(vp, &fattr);
 273         *va = np->n_vattr;
 274         if (np->opened)
 275                 np->n_size = oldsize;
 276         return (0);
 277 }
 278 /*
 279  * nwfs_setattr call from vfs.
 280  *
 281  * nwfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred)
 282  */
 283 static int
 284 nwfs_setattr(struct vop_setattr_args *ap)
 285 {
 286         thread_t td = curthread; /* XXX */
 287         struct vnode *vp = ap->a_vp;
 288         struct nwnode *np = VTONW(vp);
 289         struct vattr *vap = ap->a_vap;
 290         u_quad_t tsize=0;
 291         int error = 0;
 292
 293         NCPVNDEBUG("\n");
 294         if (vap->va_flags != VNOVAL)
 295                 return (EOPNOTSUPP);
 296         /*
 297          * Disallow write attempts if the filesystem is mounted read-only.
 298          */
 299         if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL ||
 300              vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
 301              vap->va_mode != (mode_t)VNOVAL) &&(vp->v_mount->mnt_flag & MNT_RDONLY))
 302                 return (EROFS);
 303         if (vap->va_size != VNOVAL) {
 304                 switch (vp->v_type) {
 305                 case VDIR:
 306                         return (EISDIR);
 307                 case VREG:
 308                         /*
 309                          * Disallow write attempts if the filesystem is
 310                          * mounted read-only.
 311                          */
 312                         if (vp->v_mount->mnt_flag & MNT_RDONLY)
 313                                 return (EROFS);
 314                         vnode_pager_setsize(vp, (u_long)vap->va_size);
 315                         tsize = np->n_size;
 316                         np->n_size = vap->va_size;
 317                         break;
 318                 default:
 319                         return EINVAL;
 320                 };
 321         }
 322         error = ncp_setattr(vp, vap, ap->a_cred, td);
 323         if (error && vap->va_size != VNOVAL) {
 324                 np->n_size = tsize;
 325                 vnode_pager_setsize(vp, (u_long)tsize);
 326         }
 327         np->n_atime = 0;        /* invalidate cache */
 328         VOP_GETATTR(vp, vap);
 329         np->n_mtime = vap->va_mtime.tv_sec;
 330         return (0);
 331 }
 332
 333 /*
 334  * nwfs_read call.
 335  *
 336  * nwfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
 337  *           struct ucred *a_cred)
 338  */
 339 static int
 340 nwfs_read(struct vop_read_args *ap)
 341 {
 342         struct vnode *vp = ap->a_vp;
 343         struct uio *uio=ap->a_uio;
 344         int error;
 345         NCPVNDEBUG("nwfs_read:\n");
 346
 347         if (vp->v_type != VREG && vp->v_type != VDIR)
 348                 return (EPERM);
 349         error = nwfs_readvnode(vp, uio, ap->a_cred);
 350         return error;
 351 }
 352
 353 /*
 354  * nwfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
 355  *            struct ucred *a_cred)
 356  */
 357 static int
 358 nwfs_write(struct vop_write_args *ap)
 359 {
 360         struct vnode *vp = ap->a_vp;
 361         struct uio *uio = ap->a_uio;
 362         int error;
 363
 364         NCPVNDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid);
 365
 366         if (vp->v_type != VREG)
 367                 return (EPERM);
 368         error = nwfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag);
 369         return(error);
 370 }
 371 /*
 372  * nwfs_create call
 373  * Create a regular file. On entry the directory to contain the file being
 374  * created is locked.  We must release before we return.
 375  *
 376  * nwfs_create(struct vnode *a_dvp, struct vnode **a_vpp,
 377  *              struct componentname *a_cnpl, struct vattr *a_vap)
 378  */
 379 static int
 380 nwfs_create(struct vop_old_create_args *ap)
 381 {
 382         struct vnode *dvp = ap->a_dvp;
 383         struct vattr *vap = ap->a_vap;
 384         struct vnode **vpp=ap->a_vpp;
 385         struct componentname *cnp = ap->a_cnp;
 386         struct vnode *vp = NULL;
 387         int error = 0, fmode;
 388         struct vattr vattr;
 389         struct nwnode *np;
 390         struct ncp_open_info no;
 391         struct nwmount *nmp=VTONWFS(dvp);
 392         ncpfid fid;
 393
 394
 395         NCPVNDEBUG("\n");
 396         *vpp = NULL;
 397         if (vap->va_type == VSOCK)
 398                 return (EOPNOTSUPP);
 399         if ((error = VOP_GETATTR(dvp, &vattr))) {
 400                 return (error);
 401         }
 402         fmode = AR_READ | AR_WRITE;
 403 /*      if (vap->va_vaflags & VA_EXCLUSIVE)
 404                 fmode |= AR_DENY_READ | AR_DENY_WRITE;*/
 405
 406         error = ncp_open_create_file_or_subdir(nmp,dvp,cnp->cn_namelen,cnp->cn_nameptr,
 407                            OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE,
 408                            0, fmode, &no, cnp->cn_td, cnp->cn_cred);
 409         if (!error) {
 410                 error = ncp_close_file(NWFSTOCONN(nmp), &no.fh, cnp->cn_td,cnp->cn_cred);
 411                 fid.f_parent = VTONW(dvp)->n_fid.f_id;
 412                 fid.f_id = no.fattr.dirEntNum;
 413                 error = nwfs_nget(VTOVFS(dvp), fid, &no.fattr, dvp, &vp);
 414                 if (!error) {
 415                         np = VTONW(vp);
 416                         np->opened = 0;
 417                         *vpp = vp;
 418                 }
 419         }
 420         return (error);
 421 }
 422
 423 /*
 424  * nwfs_remove call. It isn't possible to emulate UFS behaivour because
 425  * NetWare doesn't allow delete/rename operations on an opened file.
 426  *
 427  * nwfs_remove(struct vnode *a_dvp,
 428  *             struct vnode *a_vp, struct componentname *a_cnp)
 429  */
 430 static int
 431 nwfs_remove(struct vop_old_remove_args *ap)
 432 {
 433         struct vnode *vp = ap->a_vp;
 434         struct vnode *dvp = ap->a_dvp;
 435         struct componentname *cnp = ap->a_cnp;
 436         struct nwnode *np = VTONW(vp);
 437         struct nwmount *nmp = VTONWFS(vp);
 438         int error;
 439
 440         if (vp->v_type == VDIR || np->opened || vp->v_sysref.refcnt > 1) {
 441                 error = EPERM;
 442         } else if (!ncp_conn_valid(NWFSTOCONN(nmp))) {
 443                 error = EIO;
 444         } else {
 445                 error = ncp_DeleteNSEntry(nmp, VTONW(dvp)->n_fid.f_id,
 446                     cnp->cn_namelen,cnp->cn_nameptr,cnp->cn_td,cnp->cn_cred);
 447                 if (error == 0)
 448                         np->n_flag |= NSHOULDFREE;
 449                 else if (error == 0x899c)
 450                         error = EACCES;
 451         }
 452         return (error);
 453 }
 454
 455 /*
 456  * nwfs_file rename call
 457  *
 458  * nwfs_rename(struct vnode *a_fdvp, struct vnode *a_fvp,
 459  *              struct componentname *a_fcnp, struct vnode *a_tdvp,
 460  *              struct vnode *a_tvp, struct componentname *a_tcnp)
 461  */
 462 static int
 463 nwfs_rename(struct vop_old_rename_args *ap)
 464 {
 465         struct vnode *fvp = ap->a_fvp;
 466         struct vnode *tvp = ap->a_tvp;
 467         struct vnode *fdvp = ap->a_fdvp;
 468         struct vnode *tdvp = ap->a_tdvp;
 469         struct componentname *tcnp = ap->a_tcnp;
 470         struct componentname *fcnp = ap->a_fcnp;
 471         struct nwmount *nmp=VTONWFS(fvp);
 472         u_int16_t oldtype = 6;
 473         int error=0;
 474
 475         /* Check for cross-device rename */
 476         if ((fvp->v_mount != tdvp->v_mount) ||
 477             (tvp && (fvp->v_mount != tvp->v_mount))) {
 478                 error = EXDEV;
 479                 goto out;
 480         }
 481
 482         if (tvp && tvp->v_sysref.refcnt > 1) {
 483                 error = EBUSY;
 484                 goto out;
 485         }
 486         if (tvp && tvp != fvp) {
 487                 error = ncp_DeleteNSEntry(nmp, VTONW(tdvp)->n_fid.f_id,
 488                     tcnp->cn_namelen, tcnp->cn_nameptr,
 489                     tcnp->cn_td, tcnp->cn_cred);
 490                 if (error == 0x899c) error = EACCES;
 491                 if (error)
 492                         goto out;
 493         }
 494         if (fvp->v_type == VDIR) {
 495                 oldtype |= NW_TYPE_SUBDIR;
 496         } else if (fvp->v_type == VREG) {
 497                 oldtype |= NW_TYPE_FILE;
 498         } else
 499                 return EINVAL;
 500         error = ncp_nsrename(NWFSTOCONN(nmp), nmp->n_volume, nmp->name_space,
 501                 oldtype, &nmp->m.nls,
 502                 VTONW(fdvp)->n_fid.f_id, fcnp->cn_nameptr, fcnp->cn_namelen,
 503                 VTONW(tdvp)->n_fid.f_id, tcnp->cn_nameptr, tcnp->cn_namelen,
 504                 tcnp->cn_td,tcnp->cn_cred);
 505
 506         if (error == 0x8992)
 507                 error = EEXIST;
 508 out:
 509         if (tdvp == tvp)
 510                 vrele(tdvp);
 511         else
 512                 vput(tdvp);
 513         if (tvp)
 514                 vput(tvp);
 515         vrele(fdvp);
 516         vrele(fvp);
 517         nwfs_attr_cacheremove(fdvp);
 518         nwfs_attr_cacheremove(tdvp);
 519         /*
 520          * Need to get rid of old vnodes, because netware will change
 521          * file id on rename
 522          */
 523         vgone_vxlocked(fvp);
 524         if (tvp)
 525                 vgone_vxlocked(tvp);
 526         /*
 527          * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry.
 528          */
 529         if (error == ENOENT)
 530                 error = 0;
 531         return (error);
 532 }
 533
 534 /*
 535  * nwfs hard link create call
 536  * Netware filesystems don't know what links are.
 537  *
 538  * nwfs_link(struct vnode *a_tdvp, struct vnode *a_vp,
 539  *           struct componentname *a_cnp)
 540  */
 541 static int
 542 nwfs_link(struct vop_old_link_args *ap)
 543 {
 544         return EOPNOTSUPP;
 545 }
 546
 547 /*
 548  * nwfs_symlink link create call
 549  * Netware filesystems don't know what symlinks are.
 550  *
 551  * nwfs_symlink(struct vnode *a_dvp, struct vnode **a_vpp,
 552  *              struct componentname *a_cnp, struct vattr *a_vap,
 553  *              char *a_target)
 554  */
 555 static int
 556 nwfs_symlink(struct vop_old_symlink_args *ap)
 557 {
 558         return (EOPNOTSUPP);
 559 }
 560
 561 static int nwfs_mknod(struct vop_old_mknod_args *ap)
 562 {
 563         return (EOPNOTSUPP);
 564 }
 565
 566 /*
 567  * nwfs_mkdir call
 568  *
 569  * nwfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp,
 570  *              struct componentname *a_cnp, struct vattr *a_vap)
 571  */
 572 static int
 573 nwfs_mkdir(struct vop_old_mkdir_args *ap)
 574 {
 575         struct vnode *dvp = ap->a_dvp;
 576 /*      struct vattr *vap = ap->a_vap;*/
 577         struct componentname *cnp = ap->a_cnp;
 578         int len=cnp->cn_namelen;
 579         struct ncp_open_info no;
 580         struct nwnode *np;
 581         struct vnode *newvp = NULL;
 582         ncpfid fid;
 583         int error = 0;
 584         struct vattr vattr;
 585         char *name=cnp->cn_nameptr;
 586
 587         if ((error = VOP_GETATTR(dvp, &vattr))) {
 588                 return (error);
 589         }
 590         if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) {
 591                 return EEXIST;
 592         }
 593         if (ncp_open_create_file_or_subdir(VTONWFS(dvp),dvp, cnp->cn_namelen,
 594                         cnp->cn_nameptr,OC_MODE_CREATE, aDIR, 0xffff,
 595                         &no, cnp->cn_td, cnp->cn_cred) != 0) {
 596                 error = EACCES;
 597         } else {
 598                 error = 0;
 599         }
 600         if (!error) {
 601                 fid.f_parent = VTONW(dvp)->n_fid.f_id;
 602                 fid.f_id = no.fattr.dirEntNum;
 603                 error = nwfs_nget(VTOVFS(dvp), fid, &no.fattr, dvp, &newvp);
 604                 if (!error) {
 605                         np = VTONW(newvp);
 606                         newvp->v_type = VDIR;
 607                         *ap->a_vpp = newvp;
 608                 }
 609         }
 610         return (error);
 611 }
 612
 613 /*
 614  * nwfs_remove directory call
 615  *
 616  * nwfs_rmdir(struct vnode *a_dvp, struct vnode *a_vp,
 617  *            struct componentname *a_cnp)
 618  */
 619 static int
 620 nwfs_rmdir(struct vop_old_rmdir_args *ap)
 621 {
 622         struct vnode *vp = ap->a_vp;
 623         struct vnode *dvp = ap->a_dvp;
 624         struct componentname *cnp = ap->a_cnp;
 625         struct nwnode *np = VTONW(vp);
 626         struct nwmount *nmp = VTONWFS(vp);
 627         struct nwnode *dnp = VTONW(dvp);
 628         int error = EIO;
 629
 630         if (dvp == vp)
 631                 return EINVAL;
 632
 633         error = ncp_DeleteNSEntry(nmp, dnp->n_fid.f_id,
 634                 cnp->cn_namelen, cnp->cn_nameptr,cnp->cn_td,cnp->cn_cred);
 635         if (error == 0)
 636                 np->n_flag |= NSHOULDFREE;
 637         else if (error == NWE_DIR_NOT_EMPTY)
 638                 error = ENOTEMPTY;
 639         dnp->n_flag |= NMODIFIED;
 640         nwfs_attr_cacheremove(dvp);
 641         return (error);
 642 }
 643
 644 /*
 645  * nwfs_readdir call
 646  *
 647  * nwfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred,
 648  *              int *a_eofflag, off_t *a_cookies, int a_ncookies)
 649  */
 650 static int
 651 nwfs_readdir(struct vop_readdir_args *ap)
 652 {
 653         struct vnode *vp = ap->a_vp;
 654         struct uio *uio = ap->a_uio;
 655         int error;
 656
 657         if (vp->v_type != VDIR)
 658                 return (EPERM);
 659         if (ap->a_ncookies) {
 660                 kprintf("nwfs_readdir: no support for cookies now...");
 661                 return (EOPNOTSUPP);
 662         }
 663         if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) != 0)
 664                 return (error);
 665         error = nwfs_readvnode(vp, uio, ap->a_cred);
 666         vn_unlock(vp);
 667         return error;
 668 }
 669
 670 /*
 671  * nwfs_fsync(struct vnode *a_vp, int a_waitfor)
 672  */
 673 /* ARGSUSED */
 674 static int
 675 nwfs_fsync(struct vop_fsync_args *ap)
 676 {
 677 /*      return (nfs_flush(ap->a_vp, ap->a_waitfor, curthread, 1));*/
 678     return (0);
 679 }
 680
 681 /*
 682  * nwfs_print(struct vnode *a_vp)
 683  */
 684 /* ARGSUSED */
 685 static int
 686 nwfs_print(struct vop_print_args *ap)
 687 {
 688         struct vnode *vp = ap->a_vp;
 689         struct nwnode *np = VTONW(vp);
 690
 691         kprintf("nwfs node: name = '%s', fid = %d, pfid = %d\n",
 692             np->n_name, np->n_fid.f_id, np->n_fid.f_parent);
 693         return (0);
 694 }
 695
 696 /*
 697  * nwfs_pathconf(struct vnode *vp, int name, register_t *retval)
 698  */
 699 static int
 700 nwfs_pathconf(struct vop_pathconf_args *ap)
 701 {
 702         int name=ap->a_name, error=0;
 703         register_t *retval=ap->a_retval;
 704
 705         switch(name){
 706                 case _PC_LINK_MAX:
 707                         *retval=0;
 708                         break;
 709                 case _PC_NAME_MAX:
 710                         *retval=NCP_MAX_FILENAME; /* XXX from nwfsnode */
 711                         break;
 712                 case _PC_PATH_MAX:
 713                         *retval=NCP_MAXPATHLEN; /* XXX from nwfsnode */
 714                         break;
 715                 default:
 716                         error=EINVAL;
 717         }
 718         return(error);
 719 }
 720
 721 /*
 722  * nwfs_strategy(struct vnode *a_vp, struct bio *a_bio)
 723  */
 724 static int
 725 nwfs_strategy(struct vop_strategy_args *ap)
 726 {
 727         struct bio *bio = ap->a_bio;
 728         int error = 0;
 729         struct thread *td = NULL;
 730
 731         NCPVNDEBUG("\n");
 732         if ((bio->bio_flags & BIO_SYNC))
 733                 td = curthread;         /* YYY dunno if this is legal */
 734         /*
 735          * If the op is asynchronous and an i/o daemon is waiting
 736          * queue the request, wake it up and wait for completion
 737          * otherwise just do it ourselves.
 738          */
 739         if (bio->bio_flags & BIO_SYNC)
 740                 error = nwfs_doio(ap->a_vp, bio, proc0.p_ucred, td);
 741         return (error);
 742 }
 743
 744 /*
 745  * nwfs_bmap(struct vnode *a_vp, off_t a_loffset,
 746  *           off_t *a_doffsetp, int *a_runp, int *a_runb)
 747  */
 748 static int
 749 nwfs_bmap(struct vop_bmap_args *ap)
 750 {
 751         if (ap->a_doffsetp != NULL)
 752                 *ap->a_doffsetp = ap->a_loffset;
 753         if (ap->a_runp != NULL)
 754                 *ap->a_runp = 0;
 755         if (ap->a_runb != NULL)
 756                 *ap->a_runb = 0;
 757         return (0);
 758 }
 759
 760 int
 761 nwfs_nget(struct mount *mp, ncpfid fid, const struct nw_entry_info *fap,
 762           struct vnode *dvp, struct vnode **vpp)
 763 {
 764         int error;
 765         struct nwnode *newnp;
 766         struct vnode *vp;
 767
 768         *vpp = NULL;
 769         error = nwfs_allocvp(mp, fid, &vp);
 770         if (error)
 771                 return error;
 772         newnp = VTONW(vp);
 773         if (fap) {
 774                 newnp->n_attr = fap->attributes;
 775                 vp->v_type = newnp->n_attr & aDIR ? VDIR : VREG;
 776                 nwfs_attr_cacheenter(vp, fap);
 777         }
 778         if (dvp) {
 779                 newnp->n_parent = VTONW(dvp)->n_fid;
 780                 if ((newnp->n_flag & NNEW) && vp->v_type == VDIR) {
 781                         if ((dvp->v_flag & VROOT) == 0) {
 782                                 newnp->n_refparent = 1;
 783                                 vref(dvp);      /* vhold */
 784                         }
 785                 }
 786         } else {
 787                 if ((newnp->n_flag & NNEW) && vp->v_type == VREG)
 788                         kprintf("new vnode '%s' borned without parent ?\n",newnp->n_name);
 789         }
 790         newnp->n_flag &= ~NNEW;
 791         *vpp = vp;
 792         return 0;
 793 }
 794
 795 /*
 796  * How to keep the brain busy ...
 797  * Currently lookup routine can make two lookup for vnode. This can be
 798  * avoided by reorg the code.
 799  *
 800  * nwfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp,
 801  *             struct componentname *a_cnp)
 802  */
 803 int
 804 nwfs_lookup(struct vop_old_lookup_args *ap)
 805 {
 806         struct componentname *cnp = ap->a_cnp;
 807         struct vnode *dvp = ap->a_dvp;
 808         struct vnode **vpp = ap->a_vpp;
 809         int flags = cnp->cn_flags;
 810         struct vnode *vp;
 811         struct nwmount *nmp;
 812         struct mount *mp = dvp->v_mount;
 813         struct nwnode *dnp, *npp;
 814         struct nw_entry_info fattr, *fap;
 815         ncpfid fid;
 816         int nameiop=cnp->cn_nameiop;
 817         int lockparent, wantparent, error = 0, notfound;
 818         struct thread *td = cnp->cn_td;
 819         char _name[cnp->cn_namelen+1];
 820         bcopy(cnp->cn_nameptr,_name,cnp->cn_namelen);
 821         _name[cnp->cn_namelen]=0;
 822
 823         if (dvp->v_type != VDIR)
 824                 return (ENOTDIR);
 825         if ((flags & CNP_ISDOTDOT) && (dvp->v_flag & VROOT)) {
 826                 kprintf("nwfs_lookup: invalid '..'\n");
 827                 return EIO;
 828         }
 829
 830         NCPVNDEBUG("%d '%s' in '%s' id=d\n", nameiop, _name,
 831                 VTONW(dvp)->n_name/*, VTONW(dvp)->n_name*/);
 832
 833         if ((mp->mnt_flag & MNT_RDONLY) && nameiop != NAMEI_LOOKUP)
 834                 return (EROFS);
 835         if ((error = VOP_EACCESS(dvp, VEXEC, cnp->cn_cred)))
 836                 return (error);
 837         lockparent = flags & CNP_LOCKPARENT;
 838         wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT);
 839         nmp = VFSTONWFS(mp);
 840         dnp = VTONW(dvp);
 841 /*
 842 kprintf("dvp %d:%d:%d\n", (int)mp, (int)dvp->v_flag & VROOT, (int)flags & CNP_ISDOTDOT);
 843 */
 844         error = ncp_pathcheck(cnp->cn_nameptr, cnp->cn_namelen, &nmp->m.nls,
 845             (nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && (nmp->m.nls.opt & NWHP_NOSTRICT) == 0);
 846         if (error)
 847             return ENOENT;
 848
 849         error = 0;
 850         *vpp = NULLVP;
 851         fap = NULL;
 852         if (flags & CNP_ISDOTDOT) {
 853                 if (NWCMPF(&dnp->n_parent, &nmp->n_rootent)) {
 854                         fid = nmp->n_rootent;
 855                         fap = NULL;
 856                         notfound = 0;
 857                 } else {
 858                         error = nwfs_lookupnp(nmp, dnp->n_parent, td, &npp);
 859                         if (error) {
 860                                 return error;
 861                         }
 862                         fid = dnp->n_parent;
 863                         fap = &fattr;
 864                         /*np = *npp;*/
 865                         notfound = ncp_obtain_info(nmp, npp->n_dosfid,
 866                             0, NULL, fap, td, cnp->cn_cred);
 867                 }
 868         } else {
 869                 fap = &fattr;
 870                 notfound = ncp_lookup(dvp, cnp->cn_namelen, cnp->cn_nameptr,
 871                         fap, td, cnp->cn_cred);
 872                 fid.f_id = fap->dirEntNum;
 873                 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
 874                         fid.f_parent = dnp->n_fid.f_parent;
 875                 } else
 876                         fid.f_parent = dnp->n_fid.f_id;
 877                 NCPVNDEBUG("call to ncp_lookup returned=%d\n",notfound);
 878         }
 879         if (notfound && notfound < 0x80 )
 880                 return (notfound);      /* hard error */
 881         if (notfound) { /* entry not found */
 882                 /* Handle RENAME or CREATE case... */
 883                 if ((nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && wantparent) {
 884                         if (!lockparent)
 885                                 vn_unlock(dvp);
 886                         return (EJUSTRETURN);
 887                 }
 888                 return ENOENT;
 889         }/* else {
 890                 NCPVNDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum);
 891         }*/
 892         /* handle DELETE case ... */
 893         if (nameiop == NAMEI_DELETE) {  /* delete last component */
 894                 error = VOP_EACCESS(dvp, VWRITE, cnp->cn_cred);
 895                 if (error) return (error);
 896                 if (NWCMPF(&dnp->n_fid, &fid)) {        /* we found ourselfs */
 897                         vref(dvp);
 898                         *vpp = dvp;
 899                         return 0;
 900                 }
 901                 error = nwfs_nget(mp, fid, fap, dvp, &vp);
 902                 if (error) return (error);
 903                 *vpp = vp;
 904                 if (!lockparent) vn_unlock(dvp);
 905                 return (0);
 906         }
 907         if (nameiop == NAMEI_RENAME && wantparent) {
 908                 error = VOP_EACCESS(dvp, VWRITE, cnp->cn_cred);
 909                 if (error) return (error);
 910                 if (NWCMPF(&dnp->n_fid, &fid)) return EISDIR;
 911                 error = nwfs_nget(mp, fid, fap, dvp, &vp);
 912                 if (error) return (error);
 913                 *vpp = vp;
 914                 if (!lockparent)
 915                         vn_unlock(dvp);
 916                 return (0);
 917         }
 918         if (flags & CNP_ISDOTDOT) {
 919                 vn_unlock(dvp); /* race to get the inode */
 920                 error = nwfs_nget(mp, fid, NULL, NULL, &vp);
 921                 if (error) {
 922                         vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
 923                         return (error);
 924                 }
 925                 if (lockparent && (error = vn_lock(dvp, LK_EXCLUSIVE))) {
 926                         vput(vp);
 927                         return (error);
 928                 }
 929                 *vpp = vp;
 930         } else if (NWCMPF(&dnp->n_fid, &fid)) {
 931                 vref(dvp);
 932                 *vpp = dvp;
 933         } else {
 934                 error = nwfs_nget(mp, fid, fap, dvp, &vp);
 935                 if (error) return (error);
 936                 *vpp = vp;
 937                 NCPVNDEBUG("lookup: getnewvp!\n");
 938                 if (!lockparent)
 939                         vn_unlock(dvp);
 940         }
 941 #if 0
 942         /* XXX MOVE TO NREMOVE */
 943         if ((cnp->cn_flags & CNP_MAKEENTRY)) {
 944                 VTONW(*vpp)->n_ctime = VTONW(*vpp)->n_vattr.va_ctime.tv_sec;
 945                 /* XXX */
 946         }
 947 #endif
 948         return (0);
 949 }