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  * for now just return ok
 121  *
 122  * nwfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
 123  */
 124 static int
 125 nwfs_access(struct vop_access_args *ap)
 126 {
 127         struct vnode *vp = ap->a_vp;
 128         struct ucred *cred = ap->a_cred;
 129         u_int mode = ap->a_mode;
 130         struct nwmount *nmp = VTONWFS(vp);
 131         int error = 0;
 132
 133         NCPVNDEBUG("\n");
 134         if ((ap->a_mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) {
 135                 switch (vp->v_type) {
 136                     case VREG: case VDIR: case VLNK:
 137                         return (EROFS);
 138                     default:
 139                         break;
 140                 }
 141         }
 142         if (cred->cr_uid == 0)
 143                 return 0;
 144         if (cred->cr_uid != nmp->m.uid) {
 145                 mode >>= 3;
 146                 if (!groupmember(nmp->m.gid, cred))
 147                         mode >>= 3;
 148         }
 149         error = (((vp->v_type == VREG) ? nmp->m.file_mode : nmp->m.dir_mode) & mode) == mode ? 0 : EACCES;
 150         return error;
 151 }
 152 /*
 153  * nwfs_open vnode op
 154  *
 155  * nwfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
 156  *           struct file *a_fp)
 157  */
 158 /* ARGSUSED */
 159 static int
 160 nwfs_open(struct vop_open_args *ap)
 161 {
 162         thread_t td = curthread; /* XXX */
 163         struct vnode *vp = ap->a_vp;
 164         int mode = ap->a_mode;
 165         struct nwnode *np = VTONW(vp);
 166         struct ncp_open_info no;
 167         struct nwmount *nmp = VTONWFS(vp);
 168         struct vattr vattr;
 169         int error, nwm;
 170
 171         NCPVNDEBUG("%s,%d\n",np->n_name, np->opened);
 172         if (vp->v_type != VREG && vp->v_type != VDIR) {
 173                 NCPFATAL("open vtype = %d\n", vp->v_type);
 174                 return (EACCES);
 175         }
 176         if (vp->v_type == VDIR) return 0;       /* nothing to do now */
 177         if (np->n_flag & NMODIFIED) {
 178                 if ((error = nwfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR)
 179                         return (error);
 180                 np->n_atime = 0;
 181                 error = VOP_GETATTR(vp, &vattr);
 182                 if (error)
 183                         return (error);
 184                 np->n_mtime = vattr.va_mtime.tv_sec;
 185         } else {
 186                 error = VOP_GETATTR(vp, &vattr);
 187                 if (error)
 188                         return (error);
 189                 if (np->n_mtime != vattr.va_mtime.tv_sec) {
 190                         if ((error = nwfs_vinvalbuf(vp, V_SAVE, 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 (vop_stdopen(ap));
 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, 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, td, ap->a_cred);
 210         }
 211         np->n_atime = 0;
 212         if (error == 0) {
 213                 np->opened++;
 214                 np->n_fh = no.fh;
 215                 np->n_origfh = no.origfh;
 216                 error = vop_stdopen(ap);
 217         }
 218         return (error);
 219 }
 220
 221 /*
 222  * nwfs_close(struct vnode *a_vp, int a_fflag)
 223  */
 224 static int
 225 nwfs_close(struct vop_close_args *ap)
 226 {
 227         thread_t td = curthread; /* XXX */
 228         struct vnode *vp = ap->a_vp;
 229         struct nwnode *np = VTONW(vp);
 230         int error;
 231
 232         NCPVNDEBUG("name=%s,td=%p,c=%d\n",np->n_name,ap->a_td,np->opened);
 233
 234         error = 0;
 235         if (vp->v_type == VDIR)
 236                 goto done;
 237         if (np->opened == 0)
 238                 goto done;
 239         error = nwfs_vinvalbuf(vp, V_SAVE, 1);
 240         if (np->opened == 0) {
 241                 error = 0;      /* huh? */
 242                 goto done;
 243         }
 244         if (--np->opened == 0) {
 245                 error = ncp_close_file(NWFSTOCONN(VTONWFS(vp)), &np->n_fh,
 246                    td, proc0.p_ucred);
 247         }
 248         np->n_atime = 0;
 249 done:
 250         vop_stdclose(ap);
 251         return (error);
 252 }
 253
 254 /*
 255  * nwfs_getattr call from vfs.
 256  *
 257  * nwfs_getattr(struct vnode *a_vp, struct vattr *a_vap)
 258  */
 259 static int
 260 nwfs_getattr(struct vop_getattr_args *ap)
 261 {
 262         thread_t td = curthread; /* XXX */
 263         struct vnode *vp = ap->a_vp;
 264         struct nwnode *np = VTONW(vp);
 265         struct vattr *va=ap->a_vap;
 266         struct nwmount *nmp = VTONWFS(vp);
 267         struct nw_entry_info fattr;
 268         int error;
 269         u_int32_t oldsize;
 270
 271         NCPVNDEBUG("%lx:%d: '%s' %d\n", (long)vp, nmp->n_volume, np->n_name, (vp->v_flag & VROOT) != 0);
 272         error = nwfs_attr_cachelookup(vp,va);
 273         if (!error) return 0;
 274         NCPVNDEBUG("not in cache\n");
 275         oldsize = np->n_size;
 276         if (np->n_flag & NVOLUME) {
 277                 error = ncp_obtain_info(nmp, np->n_fid.f_id, 0, NULL, &fattr,
 278                     td,proc0.p_ucred);
 279         } else {
 280                 error = ncp_obtain_info(nmp, np->n_fid.f_parent, np->n_nmlen,
 281                     np->n_name, &fattr, td, proc0.p_ucred);
 282         }
 283         if (error) {
 284                 NCPVNDEBUG("error %d\n", error);
 285                 return error;
 286         }
 287         nwfs_attr_cacheenter(vp, &fattr);
 288         *va = np->n_vattr;
 289         if (np->opened)
 290                 np->n_size = oldsize;
 291         return (0);
 292 }
 293 /*
 294  * nwfs_setattr call from vfs.
 295  *
 296  * nwfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred)
 297  */
 298 static int
 299 nwfs_setattr(struct vop_setattr_args *ap)
 300 {
 301         thread_t td = curthread; /* XXX */
 302         struct vnode *vp = ap->a_vp;
 303         struct nwnode *np = VTONW(vp);
 304         struct vattr *vap = ap->a_vap;
 305         u_quad_t tsize=0;
 306         int error = 0;
 307
 308         NCPVNDEBUG("\n");
 309         if (vap->va_flags != VNOVAL)
 310                 return (EOPNOTSUPP);
 311         /*
 312          * Disallow write attempts if the filesystem is mounted read-only.
 313          */
 314         if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL ||
 315              vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
 316              vap->va_mode != (mode_t)VNOVAL) &&(vp->v_mount->mnt_flag & MNT_RDONLY))
 317                 return (EROFS);
 318         if (vap->va_size != VNOVAL) {
 319                 switch (vp->v_type) {
 320                 case VDIR:
 321                         return (EISDIR);
 322                 case VREG:
 323                         /*
 324                          * Disallow write attempts if the filesystem is
 325                          * mounted read-only.
 326                          */
 327                         if (vp->v_mount->mnt_flag & MNT_RDONLY)
 328                                 return (EROFS);
 329                         vnode_pager_setsize(vp, (u_long)vap->va_size);
 330                         tsize = np->n_size;
 331                         np->n_size = vap->va_size;
 332                         break;
 333                 default:
 334                         return EINVAL;
 335                 };
 336         }
 337         error = ncp_setattr(vp, vap, ap->a_cred, td);
 338         if (error && vap->va_size != VNOVAL) {
 339                 np->n_size = tsize;
 340                 vnode_pager_setsize(vp, (u_long)tsize);
 341         }
 342         np->n_atime = 0;        /* invalidate cache */
 343         VOP_GETATTR(vp, vap);
 344         np->n_mtime = vap->va_mtime.tv_sec;
 345         return (0);
 346 }
 347
 348 /*
 349  * nwfs_read call.
 350  *
 351  * nwfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
 352  *           struct ucred *a_cred)
 353  */
 354 static int
 355 nwfs_read(struct vop_read_args *ap)
 356 {
 357         struct vnode *vp = ap->a_vp;
 358         struct uio *uio=ap->a_uio;
 359         int error;
 360         NCPVNDEBUG("nwfs_read:\n");
 361
 362         if (vp->v_type != VREG && vp->v_type != VDIR)
 363                 return (EPERM);
 364         error = nwfs_readvnode(vp, uio, ap->a_cred);
 365         return error;
 366 }
 367
 368 /*
 369  * nwfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
 370  *            struct ucred *a_cred)
 371  */
 372 static int
 373 nwfs_write(struct vop_write_args *ap)
 374 {
 375         struct vnode *vp = ap->a_vp;
 376         struct uio *uio = ap->a_uio;
 377         int error;
 378
 379         NCPVNDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid);
 380
 381         if (vp->v_type != VREG)
 382                 return (EPERM);
 383         error = nwfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag);
 384         return(error);
 385 }
 386 /*
 387  * nwfs_create call
 388  * Create a regular file. On entry the directory to contain the file being
 389  * created is locked.  We must release before we return.
 390  *
 391  * nwfs_create(struct vnode *a_dvp, struct vnode **a_vpp,
 392  *              struct componentname *a_cnpl, struct vattr *a_vap)
 393  */
 394 static int
 395 nwfs_create(struct vop_old_create_args *ap)
 396 {
 397         struct vnode *dvp = ap->a_dvp;
 398         struct vattr *vap = ap->a_vap;
 399         struct vnode **vpp=ap->a_vpp;
 400         struct componentname *cnp = ap->a_cnp;
 401         struct vnode *vp = (struct vnode *)0;
 402         int error = 0, fmode;
 403         struct vattr vattr;
 404         struct nwnode *np;
 405         struct ncp_open_info no;
 406         struct nwmount *nmp=VTONWFS(dvp);
 407         ncpfid fid;
 408
 409
 410         NCPVNDEBUG("\n");
 411         *vpp = NULL;
 412         if (vap->va_type == VSOCK)
 413                 return (EOPNOTSUPP);
 414         if ((error = VOP_GETATTR(dvp, &vattr))) {
 415                 return (error);
 416         }
 417         fmode = AR_READ | AR_WRITE;
 418 /*      if (vap->va_vaflags & VA_EXCLUSIVE)
 419                 fmode |= AR_DENY_READ | AR_DENY_WRITE;*/
 420
 421         error = ncp_open_create_file_or_subdir(nmp,dvp,cnp->cn_namelen,cnp->cn_nameptr,
 422                            OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE,
 423                            0, fmode, &no, cnp->cn_td, cnp->cn_cred);
 424         if (!error) {
 425                 error = ncp_close_file(NWFSTOCONN(nmp), &no.fh, cnp->cn_td,cnp->cn_cred);
 426                 fid.f_parent = VTONW(dvp)->n_fid.f_id;
 427                 fid.f_id = no.fattr.dirEntNum;
 428                 error = nwfs_nget(VTOVFS(dvp), fid, &no.fattr, dvp, &vp);
 429                 if (!error) {
 430                         np = VTONW(vp);
 431                         np->opened = 0;
 432                         *vpp = vp;
 433                 }
 434         }
 435         return (error);
 436 }
 437
 438 /*
 439  * nwfs_remove call. It isn't possible to emulate UFS behaivour because
 440  * NetWare doesn't allow delete/rename operations on an opened file.
 441  *
 442  * nwfs_remove(struct vnode *a_dvp,
 443  *             struct vnode *a_vp, struct componentname *a_cnp)
 444  */
 445 static int
 446 nwfs_remove(struct vop_old_remove_args *ap)
 447 {
 448         struct vnode *vp = ap->a_vp;
 449         struct vnode *dvp = ap->a_dvp;
 450         struct componentname *cnp = ap->a_cnp;
 451         struct nwnode *np = VTONW(vp);
 452         struct nwmount *nmp = VTONWFS(vp);
 453         int error;
 454
 455         if (vp->v_type == VDIR || np->opened || vp->v_sysref.refcnt > 1) {
 456                 error = EPERM;
 457         } else if (!ncp_conn_valid(NWFSTOCONN(nmp))) {
 458                 error = EIO;
 459         } else {
 460                 error = ncp_DeleteNSEntry(nmp, VTONW(dvp)->n_fid.f_id,
 461                     cnp->cn_namelen,cnp->cn_nameptr,cnp->cn_td,cnp->cn_cred);
 462                 if (error == 0)
 463                         np->n_flag |= NSHOULDFREE;
 464                 else if (error == 0x899c)
 465                         error = EACCES;
 466         }
 467         return (error);
 468 }
 469
 470 /*
 471  * nwfs_file rename call
 472  *
 473  * nwfs_rename(struct vnode *a_fdvp, struct vnode *a_fvp,
 474  *              struct componentname *a_fcnp, struct vnode *a_tdvp,
 475  *              struct vnode *a_tvp, struct componentname *a_tcnp)
 476  */
 477 static int
 478 nwfs_rename(struct vop_old_rename_args *ap)
 479 {
 480         struct vnode *fvp = ap->a_fvp;
 481         struct vnode *tvp = ap->a_tvp;
 482         struct vnode *fdvp = ap->a_fdvp;
 483         struct vnode *tdvp = ap->a_tdvp;
 484         struct componentname *tcnp = ap->a_tcnp;
 485         struct componentname *fcnp = ap->a_fcnp;
 486         struct nwmount *nmp=VTONWFS(fvp);
 487         u_int16_t oldtype = 6;
 488         int error=0;
 489
 490         /* Check for cross-device rename */
 491         if ((fvp->v_mount != tdvp->v_mount) ||
 492             (tvp && (fvp->v_mount != tvp->v_mount))) {
 493                 error = EXDEV;
 494                 goto out;
 495         }
 496
 497         if (tvp && tvp->v_sysref.refcnt > 1) {
 498                 error = EBUSY;
 499                 goto out;
 500         }
 501         if (tvp && tvp != fvp) {
 502                 error = ncp_DeleteNSEntry(nmp, VTONW(tdvp)->n_fid.f_id,
 503                     tcnp->cn_namelen, tcnp->cn_nameptr,
 504                     tcnp->cn_td, tcnp->cn_cred);
 505                 if (error == 0x899c) error = EACCES;
 506                 if (error)
 507                         goto out;
 508         }
 509         if (fvp->v_type == VDIR) {
 510                 oldtype |= NW_TYPE_SUBDIR;
 511         } else if (fvp->v_type == VREG) {
 512                 oldtype |= NW_TYPE_FILE;
 513         } else
 514                 return EINVAL;
 515         error = ncp_nsrename(NWFSTOCONN(nmp), nmp->n_volume, nmp->name_space,
 516                 oldtype, &nmp->m.nls,
 517                 VTONW(fdvp)->n_fid.f_id, fcnp->cn_nameptr, fcnp->cn_namelen,
 518                 VTONW(tdvp)->n_fid.f_id, tcnp->cn_nameptr, tcnp->cn_namelen,
 519                 tcnp->cn_td,tcnp->cn_cred);
 520
 521         if (error == 0x8992)
 522                 error = EEXIST;
 523 out:
 524         if (tdvp == tvp)
 525                 vrele(tdvp);
 526         else
 527                 vput(tdvp);
 528         if (tvp)
 529                 vput(tvp);
 530         vrele(fdvp);
 531         vrele(fvp);
 532         nwfs_attr_cacheremove(fdvp);
 533         nwfs_attr_cacheremove(tdvp);
 534         /*
 535          * Need to get rid of old vnodes, because netware will change
 536          * file id on rename
 537          */
 538         vgone_vxlocked(fvp);
 539         if (tvp)
 540                 vgone_vxlocked(tvp);
 541         /*
 542          * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry.
 543          */
 544         if (error == ENOENT)
 545                 error = 0;
 546         return (error);
 547 }
 548
 549 /*
 550  * nwfs hard link create call
 551  * Netware filesystems don't know what links are.
 552  *
 553  * nwfs_link(struct vnode *a_tdvp, struct vnode *a_vp,
 554  *           struct componentname *a_cnp)
 555  */
 556 static int
 557 nwfs_link(struct vop_old_link_args *ap)
 558 {
 559         return EOPNOTSUPP;
 560 }
 561
 562 /*
 563  * nwfs_symlink link create call
 564  * Netware filesystems don't know what symlinks are.
 565  *
 566  * nwfs_symlink(struct vnode *a_dvp, struct vnode **a_vpp,
 567  *              struct componentname *a_cnp, struct vattr *a_vap,
 568  *              char *a_target)
 569  */
 570 static int
 571 nwfs_symlink(struct vop_old_symlink_args *ap)
 572 {
 573         return (EOPNOTSUPP);
 574 }
 575
 576 static int nwfs_mknod(struct vop_old_mknod_args *ap)
 577 {
 578         return (EOPNOTSUPP);
 579 }
 580
 581 /*
 582  * nwfs_mkdir call
 583  *
 584  * nwfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp,
 585  *              struct componentname *a_cnp, struct vattr *a_vap)
 586  */
 587 static int
 588 nwfs_mkdir(struct vop_old_mkdir_args *ap)
 589 {
 590         struct vnode *dvp = ap->a_dvp;
 591 /*      struct vattr *vap = ap->a_vap;*/
 592         struct componentname *cnp = ap->a_cnp;
 593         int len=cnp->cn_namelen;
 594         struct ncp_open_info no;
 595         struct nwnode *np;
 596         struct vnode *newvp = (struct vnode *)0;
 597         ncpfid fid;
 598         int error = 0;
 599         struct vattr vattr;
 600         char *name=cnp->cn_nameptr;
 601
 602         if ((error = VOP_GETATTR(dvp, &vattr))) {
 603                 return (error);
 604         }
 605         if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) {
 606                 return EEXIST;
 607         }
 608         if (ncp_open_create_file_or_subdir(VTONWFS(dvp),dvp, cnp->cn_namelen,
 609                         cnp->cn_nameptr,OC_MODE_CREATE, aDIR, 0xffff,
 610                         &no, cnp->cn_td, cnp->cn_cred) != 0) {
 611                 error = EACCES;
 612         } else {
 613                 error = 0;
 614         }
 615         if (!error) {
 616                 fid.f_parent = VTONW(dvp)->n_fid.f_id;
 617                 fid.f_id = no.fattr.dirEntNum;
 618                 error = nwfs_nget(VTOVFS(dvp), fid, &no.fattr, dvp, &newvp);
 619                 if (!error) {
 620                         np = VTONW(newvp);
 621                         newvp->v_type = VDIR;
 622                         *ap->a_vpp = newvp;
 623                 }
 624         }
 625         return (error);
 626 }
 627
 628 /*
 629  * nwfs_remove directory call
 630  *
 631  * nwfs_rmdir(struct vnode *a_dvp, struct vnode *a_vp,
 632  *            struct componentname *a_cnp)
 633  */
 634 static int
 635 nwfs_rmdir(struct vop_old_rmdir_args *ap)
 636 {
 637         struct vnode *vp = ap->a_vp;
 638         struct vnode *dvp = ap->a_dvp;
 639         struct componentname *cnp = ap->a_cnp;
 640         struct nwnode *np = VTONW(vp);
 641         struct nwmount *nmp = VTONWFS(vp);
 642         struct nwnode *dnp = VTONW(dvp);
 643         int error = EIO;
 644
 645         if (dvp == vp)
 646                 return EINVAL;
 647
 648         error = ncp_DeleteNSEntry(nmp, dnp->n_fid.f_id,
 649                 cnp->cn_namelen, cnp->cn_nameptr,cnp->cn_td,cnp->cn_cred);
 650         if (error == 0)
 651                 np->n_flag |= NSHOULDFREE;
 652         else if (error == NWE_DIR_NOT_EMPTY)
 653                 error = ENOTEMPTY;
 654         dnp->n_flag |= NMODIFIED;
 655         nwfs_attr_cacheremove(dvp);
 656         return (error);
 657 }
 658
 659 /*
 660  * nwfs_readdir call
 661  *
 662  * nwfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred,
 663  *              int *a_eofflag, off_t *a_cookies, int a_ncookies)
 664  */
 665 static int
 666 nwfs_readdir(struct vop_readdir_args *ap)
 667 {
 668         struct vnode *vp = ap->a_vp;
 669         struct uio *uio = ap->a_uio;
 670         int error;
 671
 672         if (vp->v_type != VDIR)
 673                 return (EPERM);
 674         if (ap->a_ncookies) {
 675                 kprintf("nwfs_readdir: no support for cookies now...");
 676                 return (EOPNOTSUPP);
 677         }
 678         if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) != 0)
 679                 return (error);
 680         error = nwfs_readvnode(vp, uio, ap->a_cred);
 681         vn_unlock(vp);
 682         return error;
 683 }
 684
 685 /*
 686  * nwfs_fsync(struct vnode *a_vp, int a_waitfor)
 687  */
 688 /* ARGSUSED */
 689 static int
 690 nwfs_fsync(struct vop_fsync_args *ap)
 691 {
 692 /*      return (nfs_flush(ap->a_vp, ap->a_waitfor, curthread, 1));*/
 693     return (0);
 694 }
 695
 696 /*
 697  * nwfs_print(struct vnode *a_vp)
 698  */
 699 /* ARGSUSED */
 700 static int
 701 nwfs_print(struct vop_print_args *ap)
 702 {
 703         struct vnode *vp = ap->a_vp;
 704         struct nwnode *np = VTONW(vp);
 705
 706         kprintf("nwfs node: name = '%s', fid = %d, pfid = %d\n",
 707             np->n_name, np->n_fid.f_id, np->n_fid.f_parent);
 708         return (0);
 709 }
 710
 711 /*
 712  * nwfs_pathconf(struct vnode *vp, int name, register_t *retval)
 713  */
 714 static int
 715 nwfs_pathconf(struct vop_pathconf_args *ap)
 716 {
 717         int name=ap->a_name, error=0;
 718         register_t *retval=ap->a_retval;
 719
 720         switch(name){
 721                 case _PC_LINK_MAX:
 722                         *retval=0;
 723                         break;
 724                 case _PC_NAME_MAX:
 725                         *retval=NCP_MAX_FILENAME; /* XXX from nwfsnode */
 726                         break;
 727                 case _PC_PATH_MAX:
 728                         *retval=NCP_MAXPATHLEN; /* XXX from nwfsnode */
 729                         break;
 730                 default:
 731                         error=EINVAL;
 732         }
 733         return(error);
 734 }
 735
 736 /*
 737  * nwfs_strategy(struct vnode *a_vp, struct bio *a_bio)
 738  */
 739 static int
 740 nwfs_strategy(struct vop_strategy_args *ap)
 741 {
 742         struct bio *bio = ap->a_bio;
 743         struct buf *bp = bio->bio_buf;
 744         int error = 0;
 745         struct thread *td = NULL;
 746
 747         NCPVNDEBUG("\n");
 748         if ((bp->b_flags & B_ASYNC) == 0)
 749                 td = curthread;         /* YYY dunno if this is legal */
 750         /*
 751          * If the op is asynchronous and an i/o daemon is waiting
 752          * queue the request, wake it up and wait for completion
 753          * otherwise just do it ourselves.
 754          */
 755         if ((bp->b_flags & B_ASYNC) == 0 )
 756                 error = nwfs_doio(ap->a_vp, bio, proc0.p_ucred, td);
 757         return (error);
 758 }
 759
 760 /*
 761  * nwfs_bmap(struct vnode *a_vp, off_t a_loffset,
 762  *           off_t *a_doffsetp, int *a_runp, int *a_runb)
 763  */
 764 static int
 765 nwfs_bmap(struct vop_bmap_args *ap)
 766 {
 767         if (ap->a_doffsetp != NULL)
 768                 *ap->a_doffsetp = ap->a_loffset;
 769         if (ap->a_runp != NULL)
 770                 *ap->a_runp = 0;
 771         if (ap->a_runb != NULL)
 772                 *ap->a_runb = 0;
 773         return (0);
 774 }
 775
 776 int
 777 nwfs_nget(struct mount *mp, ncpfid fid, const struct nw_entry_info *fap,
 778           struct vnode *dvp, struct vnode **vpp)
 779 {
 780         int error;
 781         struct nwnode *newnp;
 782         struct vnode *vp;
 783
 784         *vpp = NULL;
 785         error = nwfs_allocvp(mp, fid, &vp);
 786         if (error)
 787                 return error;
 788         newnp = VTONW(vp);
 789         if (fap) {
 790                 newnp->n_attr = fap->attributes;
 791                 vp->v_type = newnp->n_attr & aDIR ? VDIR : VREG;
 792                 nwfs_attr_cacheenter(vp, fap);
 793         }
 794         if (dvp) {
 795                 newnp->n_parent = VTONW(dvp)->n_fid;
 796                 if ((newnp->n_flag & NNEW) && vp->v_type == VDIR) {
 797                         if ((dvp->v_flag & VROOT) == 0) {
 798                                 newnp->n_refparent = 1;
 799                                 vref(dvp);      /* vhold */
 800                         }
 801                 }
 802         } else {
 803                 if ((newnp->n_flag & NNEW) && vp->v_type == VREG)
 804                         kprintf("new vnode '%s' borned without parent ?\n",newnp->n_name);
 805         }
 806         newnp->n_flag &= ~NNEW;
 807         *vpp = vp;
 808         return 0;
 809 }
 810
 811 /*
 812  * How to keep the brain busy ...
 813  * Currently lookup routine can make two lookup for vnode. This can be
 814  * avoided by reorg the code.
 815  *
 816  * nwfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp,
 817  *             struct componentname *a_cnp)
 818  */
 819 int
 820 nwfs_lookup(struct vop_old_lookup_args *ap)
 821 {
 822         struct componentname *cnp = ap->a_cnp;
 823         struct vnode *dvp = ap->a_dvp;
 824         struct vnode **vpp = ap->a_vpp;
 825         int flags = cnp->cn_flags;
 826         struct vnode *vp;
 827         struct nwmount *nmp;
 828         struct mount *mp = dvp->v_mount;
 829         struct nwnode *dnp, *npp;
 830         struct nw_entry_info fattr, *fap;
 831         ncpfid fid;
 832         int nameiop=cnp->cn_nameiop;
 833         int lockparent, wantparent, error = 0, notfound;
 834         struct thread *td = cnp->cn_td;
 835         char _name[cnp->cn_namelen+1];
 836         bcopy(cnp->cn_nameptr,_name,cnp->cn_namelen);
 837         _name[cnp->cn_namelen]=0;
 838
 839         if (dvp->v_type != VDIR)
 840                 return (ENOTDIR);
 841         if ((flags & CNP_ISDOTDOT) && (dvp->v_flag & VROOT)) {
 842                 kprintf("nwfs_lookup: invalid '..'\n");
 843                 return EIO;
 844         }
 845
 846         NCPVNDEBUG("%d '%s' in '%s' id=d\n", nameiop, _name,
 847                 VTONW(dvp)->n_name/*, VTONW(dvp)->n_name*/);
 848
 849         if ((mp->mnt_flag & MNT_RDONLY) && nameiop != NAMEI_LOOKUP)
 850                 return (EROFS);
 851         if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred)))
 852                 return (error);
 853         lockparent = flags & CNP_LOCKPARENT;
 854         wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT);
 855         nmp = VFSTONWFS(mp);
 856         dnp = VTONW(dvp);
 857 /*
 858 kprintf("dvp %d:%d:%d\n", (int)mp, (int)dvp->v_flag & VROOT, (int)flags & CNP_ISDOTDOT);
 859 */
 860         error = ncp_pathcheck(cnp->cn_nameptr, cnp->cn_namelen, &nmp->m.nls,
 861             (nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && (nmp->m.nls.opt & NWHP_NOSTRICT) == 0);
 862         if (error)
 863             return ENOENT;
 864
 865         error = 0;
 866         *vpp = NULLVP;
 867         fap = NULL;
 868         if (flags & CNP_ISDOTDOT) {
 869                 if (NWCMPF(&dnp->n_parent, &nmp->n_rootent)) {
 870                         fid = nmp->n_rootent;
 871                         fap = NULL;
 872                         notfound = 0;
 873                 } else {
 874                         error = nwfs_lookupnp(nmp, dnp->n_parent, td, &npp);
 875                         if (error) {
 876                                 return error;
 877                         }
 878                         fid = dnp->n_parent;
 879                         fap = &fattr;
 880                         /*np = *npp;*/
 881                         notfound = ncp_obtain_info(nmp, npp->n_dosfid,
 882                             0, NULL, fap, td, cnp->cn_cred);
 883                 }
 884         } else {
 885                 fap = &fattr;
 886                 notfound = ncp_lookup(dvp, cnp->cn_namelen, cnp->cn_nameptr,
 887                         fap, td, cnp->cn_cred);
 888                 fid.f_id = fap->dirEntNum;
 889                 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
 890                         fid.f_parent = dnp->n_fid.f_parent;
 891                 } else
 892                         fid.f_parent = dnp->n_fid.f_id;
 893                 NCPVNDEBUG("call to ncp_lookup returned=%d\n",notfound);
 894         }
 895         if (notfound && notfound < 0x80 )
 896                 return (notfound);      /* hard error */
 897         if (notfound) { /* entry not found */
 898                 /* Handle RENAME or CREATE case... */
 899                 if ((nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && wantparent) {
 900                         if (!lockparent)
 901                                 vn_unlock(dvp);
 902                         return (EJUSTRETURN);
 903                 }
 904                 return ENOENT;
 905         }/* else {
 906                 NCPVNDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum);
 907         }*/
 908         /* handle DELETE case ... */
 909         if (nameiop == NAMEI_DELETE) {  /* delete last component */
 910                 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred);
 911                 if (error) return (error);
 912                 if (NWCMPF(&dnp->n_fid, &fid)) {        /* we found ourselfs */
 913                         vref(dvp);
 914                         *vpp = dvp;
 915                         return 0;
 916                 }
 917                 error = nwfs_nget(mp, fid, fap, dvp, &vp);
 918                 if (error) return (error);
 919                 *vpp = vp;
 920                 if (!lockparent) vn_unlock(dvp);
 921                 return (0);
 922         }
 923         if (nameiop == NAMEI_RENAME && wantparent) {
 924                 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred);
 925                 if (error) return (error);
 926                 if (NWCMPF(&dnp->n_fid, &fid)) return EISDIR;
 927                 error = nwfs_nget(mp, fid, fap, dvp, &vp);
 928                 if (error) return (error);
 929                 *vpp = vp;
 930                 if (!lockparent)
 931                         vn_unlock(dvp);
 932                 return (0);
 933         }
 934         if (flags & CNP_ISDOTDOT) {
 935                 vn_unlock(dvp); /* race to get the inode */
 936                 error = nwfs_nget(mp, fid, NULL, NULL, &vp);
 937                 if (error) {
 938                         vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
 939                         return (error);
 940                 }
 941                 if (lockparent && (error = vn_lock(dvp, LK_EXCLUSIVE))) {
 942                         vput(vp);
 943                         return (error);
 944                 }
 945                 *vpp = vp;
 946         } else if (NWCMPF(&dnp->n_fid, &fid)) {
 947                 vref(dvp);
 948                 *vpp = dvp;
 949         } else {
 950                 error = nwfs_nget(mp, fid, fap, dvp, &vp);
 951                 if (error) return (error);
 952                 *vpp = vp;
 953                 NCPVNDEBUG("lookup: getnewvp!\n");
 954                 if (!lockparent)
 955                         vn_unlock(dvp);
 956         }
 957 #if 0
 958         /* XXX MOVE TO NREMOVE */
 959         if ((cnp->cn_flags & CNP_MAKEENTRY)) {
 960                 VTONW(*vpp)->n_ctime = VTONW(*vpp)->n_vattr.va_ctime.tv_sec;
 961                 /* XXX */
 962         }
 963 #endif
 964         return (0);
 965 }