sys/vfs/smbfs/smbfs_vnops.c

   1 /*
   2  * Copyright (c) 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: src/sys/fs/smbfs/smbfs_vnops.c,v 1.2.2.8 2003/04/04 08:57:23 tjr Exp $
  33  * $DragonFly: src/sys/vfs/smbfs/smbfs_vnops.c,v 1.37 2007/01/29 07:10:01 dillon Exp $
  34  */
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/proc.h>
  39 #include <sys/namei.h>
  40 #include <sys/fcntl.h>
  41 #include <sys/mount.h>
  42 #include <sys/unistd.h>
  43 #include <sys/vnode.h>
  44 #include <sys/lockf.h>
  45
  46 #include <vm/vm.h>
  47 #include <vm/vm_extern.h>
  48 #include <vm/vm_zone.h>
  49
  50
  51 #include <netproto/smb/smb.h>
  52 #include <netproto/smb/smb_conn.h>
  53 #include <netproto/smb/smb_subr.h>
  54
  55 #include "smbfs.h"
  56 #include "smbfs_node.h"
  57 #include "smbfs_subr.h"
  58
  59 #include <sys/buf.h>
  60
  61 /*
  62  * Prototypes for SMBFS vnode operations
  63  */
  64 static int smbfs_create(struct vop_old_create_args *);
  65 static int smbfs_mknod(struct vop_old_mknod_args *);
  66 static int smbfs_open(struct vop_open_args *);
  67 static int smbfs_closel(struct vop_close_args *);
  68 static int smbfs_access(struct vop_access_args *);
  69 static int smbfs_getattr(struct vop_getattr_args *);
  70 static int smbfs_setattr(struct vop_setattr_args *);
  71 static int smbfs_read(struct vop_read_args *);
  72 static int smbfs_write(struct vop_write_args *);
  73 static int smbfs_fsync(struct vop_fsync_args *);
  74 static int smbfs_remove(struct vop_old_remove_args *);
  75 static int smbfs_link(struct vop_old_link_args *);
  76 static int smbfs_lookup(struct vop_old_lookup_args *);
  77 static int smbfs_rename(struct vop_old_rename_args *);
  78 static int smbfs_mkdir(struct vop_old_mkdir_args *);
  79 static int smbfs_rmdir(struct vop_old_rmdir_args *);
  80 static int smbfs_symlink(struct vop_old_symlink_args *);
  81 static int smbfs_readdir(struct vop_readdir_args *);
  82 static int smbfs_bmap(struct vop_bmap_args *);
  83 static int smbfs_strategy(struct vop_strategy_args *);
  84 static int smbfs_print(struct vop_print_args *);
  85 static int smbfs_pathconf(struct vop_pathconf_args *ap);
  86 static int smbfs_advlock(struct vop_advlock_args *);
  87 static int smbfs_getextattr(struct vop_getextattr_args *ap);
  88
  89 struct vop_ops smbfs_vnode_vops = {
  90         .vop_default =          vop_defaultop,
  91         .vop_access =           smbfs_access,
  92         .vop_advlock =          smbfs_advlock,
  93         .vop_bmap =             smbfs_bmap,
  94         .vop_close =            smbfs_closel,
  95         .vop_old_create =       smbfs_create,
  96         .vop_fsync =            smbfs_fsync,
  97         .vop_getattr =          smbfs_getattr,
  98         .vop_getpages =         smbfs_getpages,
  99         .vop_inactive =         smbfs_inactive,
 100         .vop_ioctl =            smbfs_ioctl,
 101         .vop_old_link =         smbfs_link,
 102         .vop_old_lookup =       smbfs_lookup,
 103         .vop_old_mkdir =        smbfs_mkdir,
 104         .vop_old_mknod =        smbfs_mknod,
 105         .vop_open =             smbfs_open,
 106         .vop_pathconf =         smbfs_pathconf,
 107         .vop_print =            smbfs_print,
 108         .vop_putpages =         smbfs_putpages,
 109         .vop_read =             smbfs_read,
 110         .vop_readdir =          smbfs_readdir,
 111         .vop_reclaim =          smbfs_reclaim,
 112         .vop_old_remove =       smbfs_remove,
 113         .vop_old_rename =       smbfs_rename,
 114         .vop_old_rmdir =        smbfs_rmdir,
 115         .vop_setattr =          smbfs_setattr,
 116         .vop_strategy =         smbfs_strategy,
 117         .vop_old_symlink =      smbfs_symlink,
 118         .vop_write =            smbfs_write,
 119         .vop_getextattr =       smbfs_getextattr
 120 /*      .vop_setextattr =       smbfs_setextattr */
 121 };
 122
 123 /*
 124  * smbfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
 125  *              struct thread *a_td)
 126  */
 127 static int
 128 smbfs_access(struct vop_access_args *ap)
 129 {
 130         struct vnode *vp = ap->a_vp;
 131         struct ucred *cred = ap->a_cred;
 132         u_int mode = ap->a_mode;
 133         struct smbmount *smp = VTOSMBFS(vp);
 134         int error = 0;
 135
 136         SMBVDEBUG("\n");
 137         if ((mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) {
 138                 switch (vp->v_type) {
 139                     case VREG: case VDIR: case VLNK:
 140                         return EROFS;
 141                     default:
 142                         break;
 143                 }
 144         }
 145         if (cred->cr_uid == 0)
 146                 return 0;
 147         if (cred->cr_uid != smp->sm_args.uid) {
 148                 mode >>= 3;
 149                 if (!groupmember(smp->sm_args.gid, cred))
 150                         mode >>= 3;
 151         }
 152         error = (((vp->v_type == VREG) ? smp->sm_args.file_mode : smp->sm_args.dir_mode) & mode) == mode ? 0 : EACCES;
 153         return error;
 154 }
 155
 156 /*
 157  * smbfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
 158  *            struct thread *a_td)
 159  */
 160 /* ARGSUSED */
 161 static int
 162 smbfs_open(struct vop_open_args *ap)
 163 {
 164         struct vnode *vp = ap->a_vp;
 165         struct smbnode *np = VTOSMB(vp);
 166         struct smb_cred scred;
 167         struct vattr vattr;
 168         int mode = ap->a_mode;
 169         int error, accmode;
 170
 171         SMBVDEBUG("%s,%d\n", np->n_name, np->n_opencount);
 172         if (vp->v_type != VREG && vp->v_type != VDIR) {
 173                 SMBFSERR("open eacces vtype=%d\n", vp->v_type);
 174                 return EACCES;
 175         }
 176         if (vp->v_type == VDIR) {
 177                 if (np->n_opencount == 0)
 178                         np->n_cached_cred = crhold(ap->a_cred);
 179                 np->n_opencount++;
 180                 return (vop_stdopen(ap));
 181         }
 182         if (np->n_flag & NMODIFIED) {
 183                 if ((error = smbfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR)
 184                         return error;
 185                 smbfs_attr_cacheremove(vp);
 186                 error = VOP_GETATTR(vp, &vattr);
 187                 if (error)
 188                         return error;
 189                 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
 190         } else {
 191                 error = VOP_GETATTR(vp, &vattr);
 192                 if (error)
 193                         return error;
 194                 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) {
 195                         error = smbfs_vinvalbuf(vp, V_SAVE, 1);
 196                         if (error == EINTR)
 197                                 return error;
 198                         np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
 199                 }
 200         }
 201         if (np->n_opencount) {
 202                 np->n_opencount++;
 203                 return (vop_stdopen(ap));
 204         }
 205         accmode = SMB_AM_OPENREAD;
 206         if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0)
 207                 accmode = SMB_AM_OPENRW;
 208         smb_makescred(&scred, curthread, ap->a_cred);
 209         error = smbfs_smb_open(np, accmode, &scred);
 210         if (error) {
 211                 if (mode & FWRITE)
 212                         return EACCES;
 213                 accmode = SMB_AM_OPENREAD;
 214                 error = smbfs_smb_open(np, accmode, &scred);
 215         }
 216         if (!error) {
 217                 np->n_cached_cred = crhold(ap->a_cred);
 218                 np->n_opencount++;
 219         }
 220         smbfs_attr_cacheremove(vp);
 221         if (error == 0)
 222                 vop_stdopen(ap);
 223         return error;
 224 }
 225
 226 static int
 227 smbfs_closel(struct vop_close_args *ap)
 228 {
 229         struct vnode *vp = ap->a_vp;
 230         struct smbnode *np = VTOSMB(vp);
 231         struct smb_cred scred;
 232         struct vattr vattr;
 233         int error;
 234
 235         SMBVDEBUG("name=%s, pid=%d, c=%d\n",np->n_name, p->p_pid, np->n_opencount);
 236
 237         smb_makescred(&scred, curthread, proc0.p_ucred);
 238         error = 0;
 239
 240         if (np->n_opencount == 0) {
 241                 if (vp->v_type != VDIR)
 242                         SMBERROR("Negative opencount\n");
 243                 goto done;
 244         }
 245         np->n_opencount--;
 246         if (vp->v_type == VDIR) {
 247                 if (np->n_opencount)
 248                         goto done;
 249                 if (np->n_dirseq) {
 250                         smbfs_findclose(np->n_dirseq, &scred);
 251                         np->n_dirseq = NULL;
 252                 }
 253         } else {
 254                 error = smbfs_vinvalbuf(vp, V_SAVE, 1);
 255                 if (np->n_opencount)
 256                         goto done;
 257                 VOP_GETATTR(vp, &vattr);
 258                 error = smbfs_smb_close(np->n_mount->sm_share, np->n_fid,
 259                            &np->n_mtime, &scred);
 260         }
 261         crfree(np->n_cached_cred);
 262         np->n_cached_cred = NULL;
 263         smbfs_attr_cacheremove(vp);
 264 done:
 265         vop_stdclose(ap);
 266         return error;
 267 }
 268
 269 /*
 270  * smbfs_getattr call from vfs.
 271  *
 272  * smbfs_getattr(struct vnode *a_vp, struct vattr *a_vap, struct thread *a_td)
 273  */
 274 static int
 275 smbfs_getattr(struct vop_getattr_args *ap)
 276 {
 277         struct vnode *vp = ap->a_vp;
 278         struct smbnode *np = VTOSMB(vp);
 279         struct vattr *va=ap->a_vap;
 280         struct smbfattr fattr;
 281         struct smb_cred scred;
 282         u_quad_t oldsize;
 283         int error;
 284
 285         SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_flag & VROOT) != 0);
 286         error = smbfs_attr_cachelookup(vp, va);
 287         if (!error)
 288                 return 0;
 289         SMBVDEBUG("not in the cache\n");
 290         smb_makescred(&scred, curthread, proc0.p_ucred);
 291         oldsize = np->n_size;
 292         error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred);
 293         if (error) {
 294                 SMBVDEBUG("error %d\n", error);
 295                 return error;
 296         }
 297         smbfs_attr_cacheenter(vp, &fattr);
 298         smbfs_attr_cachelookup(vp, va);
 299         if (np->n_opencount)
 300                 np->n_size = oldsize;
 301         return 0;
 302 }
 303
 304 /*
 305  * smbfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred,
 306  *               struct thread *a_td)
 307  */
 308 static int
 309 smbfs_setattr(struct vop_setattr_args *ap)
 310 {
 311         struct vnode *vp = ap->a_vp;
 312         struct smbnode *np = VTOSMB(vp);
 313         struct vattr *vap = ap->a_vap;
 314         struct timespec *mtime, *atime;
 315         struct smb_cred scred;
 316         struct smb_share *ssp = np->n_mount->sm_share;
 317         struct smb_vc *vcp = SSTOVC(ssp);
 318         u_quad_t tsize = 0;
 319         int isreadonly, doclose, error = 0;
 320
 321         SMBVDEBUG("\n");
 322         if (vap->va_flags != VNOVAL)
 323                 return EOPNOTSUPP;
 324         isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY);
 325         /*
 326          * Disallow write attempts if the filesystem is mounted read-only.
 327          */
 328         if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL ||
 329              vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
 330              vap->va_mode != (mode_t)VNOVAL) && isreadonly)
 331                 return EROFS;
 332         smb_makescred(&scred, curthread, ap->a_cred);
 333         if (vap->va_size != VNOVAL) {
 334                 switch (vp->v_type) {
 335                     case VDIR:
 336                         return EISDIR;
 337                     case VREG:
 338                         break;
 339                     default:
 340                         return EINVAL;
 341                 };
 342                 if (isreadonly)
 343                         return EROFS;
 344                 doclose = 0;
 345                 vnode_pager_setsize(vp, (u_long)vap->va_size);
 346                 tsize = np->n_size;
 347                 np->n_size = vap->va_size;
 348                 if (np->n_opencount == 0) {
 349                         error = smbfs_smb_open(np, SMB_AM_OPENRW, &scred);
 350                         if (error == 0)
 351                                 doclose = 1;
 352                 }
 353                 if (error == 0)
 354                         error = smbfs_smb_setfsize(np, vap->va_size, &scred);
 355                 if (doclose)
 356                         smbfs_smb_close(ssp, np->n_fid, NULL, &scred);
 357                 if (error) {
 358                         np->n_size = tsize;
 359                         vnode_pager_setsize(vp, (u_long)tsize);
 360                         return error;
 361                 }
 362         }
 363         mtime = atime = NULL;
 364         if (vap->va_mtime.tv_sec != VNOVAL)
 365                 mtime = &vap->va_mtime;
 366         if (vap->va_atime.tv_sec != VNOVAL)
 367                 atime = &vap->va_atime;
 368         if (mtime != atime) {
 369                 if (ap->a_cred->cr_uid != VTOSMBFS(vp)->sm_args.uid &&
 370                     (error = suser_cred(ap->a_cred, PRISON_ROOT)) &&
 371                     ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
 372                     (error = VOP_ACCESS(vp, VWRITE, ap->a_cred))))
 373                         return (error);
 374 #if 0
 375                 if (mtime == NULL)
 376                         mtime = &np->n_mtime;
 377                 if (atime == NULL)
 378                         atime = &np->n_atime;
 379 #endif
 380                 /*
 381                  * If file is opened, then we can use handle based calls.
 382                  * If not, use path based ones.
 383                  */
 384                 if (np->n_opencount == 0) {
 385                         if (vcp->vc_flags & SMBV_WIN95) {
 386                                 error = VOP_OPEN(vp, FWRITE, ap->a_cred, NULL);
 387                                 if (!error) {
 388 /*                              error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred);
 389                                 VOP_GETATTR(vp, &vattr);*/
 390                                 if (mtime)
 391                                         np->n_mtime = *mtime;
 392                                 VOP_CLOSE(vp, FWRITE);
 393                                 }
 394                         } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) {
 395                                 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred);
 396 /*                              error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/
 397                         } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) {
 398                                 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred);
 399                         } else {
 400                                 error = smbfs_smb_setpattr(np, 0, mtime, &scred);
 401                         }
 402                 } else {
 403                         if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) {
 404                                 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred);
 405                         } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) {
 406                                 error = smbfs_smb_setftime(np, mtime, atime, &scred);
 407                         } else {
 408                                 /*
 409                                  * I have no idea how to handle this for core
 410                                  * level servers. The possible solution is to
 411                                  * update mtime after file is closed.
 412                                  */
 413                                  SMBERROR("can't update times on an opened file\n");
 414                         }
 415                 }
 416         }
 417         /*
 418          * Invalidate attribute cache in case if server doesn't set
 419          * required attributes.
 420          */
 421         smbfs_attr_cacheremove(vp);     /* invalidate cache */
 422         VOP_GETATTR(vp, vap);
 423         np->n_mtime.tv_sec = vap->va_mtime.tv_sec;
 424         return error;
 425 }
 426 /*
 427  * smbfs_read call.
 428  *
 429  * smbfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
 430  *            struct ucred *a_cred)
 431  */
 432 static int
 433 smbfs_read(struct vop_read_args *ap)
 434 {
 435         struct vnode *vp = ap->a_vp;
 436         struct uio *uio = ap->a_uio;
 437
 438         SMBVDEBUG("\n");
 439         if (vp->v_type != VREG && vp->v_type != VDIR)
 440                 return EPERM;
 441         return smbfs_readvnode(vp, uio, ap->a_cred);
 442 }
 443
 444 /*
 445  * smbfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
 446  *             struct ucred *a_cred)
 447  */
 448 static int
 449 smbfs_write(struct vop_write_args *ap)
 450 {
 451         struct vnode *vp = ap->a_vp;
 452         struct uio *uio = ap->a_uio;
 453
 454         SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid);
 455         if (vp->v_type != VREG)
 456                 return (EPERM);
 457         return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag);
 458 }
 459 /*
 460  * smbfs_create call
 461  * Create a regular file. On entry the directory to contain the file being
 462  * created is locked.  We must release before we return.
 463  *
 464  * smbfs_create(struct vnode *a_dvp, struct vnode **a_vpp,
 465  *              struct componentname *a_cnp, struct vattr *a_vap)
 466  */
 467 static int
 468 smbfs_create(struct vop_old_create_args *ap)
 469 {
 470         struct vnode *dvp = ap->a_dvp;
 471         struct vattr *vap = ap->a_vap;
 472         struct vnode **vpp=ap->a_vpp;
 473         struct componentname *cnp = ap->a_cnp;
 474         struct smbnode *dnp = VTOSMB(dvp);
 475         struct vnode *vp;
 476         struct vattr vattr;
 477         struct smbfattr fattr;
 478         struct smb_cred scred;
 479         char *name = cnp->cn_nameptr;
 480         int nmlen = cnp->cn_namelen;
 481         int error;
 482
 483
 484         SMBVDEBUG("\n");
 485         *vpp = NULL;
 486         if (vap->va_type != VREG)
 487                 return EOPNOTSUPP;
 488         if ((error = VOP_GETATTR(dvp, &vattr)))
 489                 return error;
 490         smb_makescred(&scred, cnp->cn_td, cnp->cn_cred);
 491
 492         error = smbfs_smb_create(dnp, name, nmlen, &scred);
 493         if (error)
 494                 return error;
 495         error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred);
 496         if (error)
 497                 return error;
 498         error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp);
 499         if (error)
 500                 return error;
 501         *vpp = vp;
 502         return error;
 503 }
 504
 505 /*
 506  * smbfs_remove(struct vnode *a_dvp, struct vnode *a_vp,
 507  *              struct componentname *a_cnp)
 508  */
 509 static int
 510 smbfs_remove(struct vop_old_remove_args *ap)
 511 {
 512         struct vnode *vp = ap->a_vp;
 513 /*      struct vnode *dvp = ap->a_dvp;*/
 514         struct componentname *cnp = ap->a_cnp;
 515         struct smbnode *np = VTOSMB(vp);
 516         struct smb_cred scred;
 517         int error;
 518
 519         if (vp->v_type == VDIR || np->n_opencount || vp->v_usecount != 1)
 520                 return EPERM;
 521         smb_makescred(&scred, cnp->cn_td, cnp->cn_cred);
 522         error = smbfs_smb_delete(np, &scred);
 523         return error;
 524 }
 525
 526 /*
 527  * smbfs_file rename call
 528  *
 529  * smbfs_rename(struct vnode *a_fdvp, struct vnode *a_fvp,
 530  *              struct componentname *a_fcnp, struct vnode *a_tdvp,
 531  *              struct vnode *a_tvp, struct componentname *a_tcnp)
 532  */
 533 static int
 534 smbfs_rename(struct vop_old_rename_args *ap)
 535 {
 536         struct vnode *fvp = ap->a_fvp;
 537         struct vnode *tvp = ap->a_tvp;
 538         struct vnode *fdvp = ap->a_fdvp;
 539         struct vnode *tdvp = ap->a_tdvp;
 540         struct componentname *tcnp = ap->a_tcnp;
 541 /*      struct componentname *fcnp = ap->a_fcnp;*/
 542         struct smb_cred scred;
 543         u_int16_t flags = 6;
 544         int error=0;
 545
 546         /* Check for cross-device rename */
 547         if ((fvp->v_mount != tdvp->v_mount) ||
 548             (tvp && (fvp->v_mount != tvp->v_mount))) {
 549                 error = EXDEV;
 550                 goto out;
 551         }
 552
 553         if (tvp && tvp->v_usecount > 1) {
 554                 error = EBUSY;
 555                 goto out;
 556         }
 557         flags = 0x10;                   /* verify all writes */
 558         if (fvp->v_type == VDIR) {
 559                 flags |= 2;
 560         } else if (fvp->v_type == VREG) {
 561                 flags |= 1;
 562         } else {
 563                 error = EINVAL;
 564                 goto out;
 565         }
 566         smb_makescred(&scred, tcnp->cn_td, tcnp->cn_cred);
 567         /*
 568          * It seems that Samba doesn't implement SMB_COM_MOVE call...
 569          */
 570 #ifdef notnow
 571         if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) {
 572                 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp),
 573                     tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred);
 574         } else
 575 #endif
 576         {
 577                 /*
 578                  * We have to do the work atomicaly
 579                  */
 580                 if (tvp && tvp != fvp) {
 581                         error = smbfs_smb_delete(VTOSMB(tvp), &scred);
 582                         if (error)
 583                                 goto out_cacherem;
 584                 }
 585                 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp),
 586                     tcnp->cn_nameptr, tcnp->cn_namelen, &scred);
 587         }
 588
 589 out_cacherem:
 590         smbfs_attr_cacheremove(fdvp);
 591         smbfs_attr_cacheremove(tdvp);
 592 out:
 593         if (tdvp == tvp)
 594                 vrele(tdvp);
 595         else
 596                 vput(tdvp);
 597         if (tvp)
 598                 vput(tvp);
 599         vrele(fdvp);
 600         vrele(fvp);
 601 #ifdef possible_mistake
 602 #error x
 603         vgone(fvp);
 604         if (tvp)
 605                 vgone(tvp);
 606 #endif
 607         return error;
 608 }
 609
 610 /*
 611  * somtime it will come true...
 612  *
 613  * smbfs_link(struct vnode *a_tdvp, struct vnode *a_vp,
 614  *            struct componentname *a_cnp)
 615  */
 616 static int
 617 smbfs_link(struct vop_old_link_args *ap)
 618 {
 619         return EOPNOTSUPP;
 620 }
 621
 622 /*
 623  * smbfs_symlink link create call.
 624  * Sometime it will be functional...
 625  *
 626  * smbfs_symlink(struct vnode *a_dvp, struct vnode **a_vpp,
 627  *               struct componentname *a_cnp, struct vattr *a_vap,
 628  *               char *a_target)
 629  */
 630 static int
 631 smbfs_symlink(struct vop_old_symlink_args *ap)
 632 {
 633         return EOPNOTSUPP;
 634 }
 635
 636 static int
 637 smbfs_mknod(struct vop_old_mknod_args *ap)
 638 {
 639         return EOPNOTSUPP;
 640 }
 641
 642 /*
 643  * smbfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp,
 644  *              struct componentname *a_cnp, struct vattr *a_vap)
 645  */
 646 static int
 647 smbfs_mkdir(struct vop_old_mkdir_args *ap)
 648 {
 649         struct vnode *dvp = ap->a_dvp;
 650 /*      struct vattr *vap = ap->a_vap;*/
 651         struct vnode *vp;
 652         struct componentname *cnp = ap->a_cnp;
 653         struct smbnode *dnp = VTOSMB(dvp);
 654         struct vattr vattr;
 655         struct smb_cred scred;
 656         struct smbfattr fattr;
 657         char *name = cnp->cn_nameptr;
 658         int len = cnp->cn_namelen;
 659         int error;
 660
 661         if ((error = VOP_GETATTR(dvp, &vattr))) {
 662                 return error;
 663         }
 664         if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.'))))
 665                 return EEXIST;
 666         smb_makescred(&scred, cnp->cn_td, cnp->cn_cred);
 667         error = smbfs_smb_mkdir(dnp, name, len, &scred);
 668         if (error)
 669                 return error;
 670         error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred);
 671         if (error)
 672                 return error;
 673         error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp);
 674         if (error)
 675                 return error;
 676         *ap->a_vpp = vp;
 677         return 0;
 678 }
 679
 680 /*
 681  * smbfs_remove directory call
 682  *
 683  * smbfs_rmdir(struct vnode *a_dvp, struct vnode *a_vp,
 684  *              struct componentname *a_cnp)
 685  */
 686 static int
 687 smbfs_rmdir(struct vop_old_rmdir_args *ap)
 688 {
 689         struct vnode *vp = ap->a_vp;
 690         struct vnode *dvp = ap->a_dvp;
 691         struct componentname *cnp = ap->a_cnp;
 692 /*      struct smbmount *smp = VTOSMBFS(vp);*/
 693         struct smbnode *dnp = VTOSMB(dvp);
 694         struct smbnode *np = VTOSMB(vp);
 695         struct smb_cred scred;
 696         int error;
 697
 698         if (dvp == vp)
 699                 return EINVAL;
 700
 701         smb_makescred(&scred, cnp->cn_td, cnp->cn_cred);
 702         error = smbfs_smb_rmdir(np, &scred);
 703         dnp->n_flag |= NMODIFIED;
 704         smbfs_attr_cacheremove(dvp);
 705         return error;
 706 }
 707
 708 /*
 709  * smbfs_readdir call
 710  *
 711  * smbfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred,
 712  *               int *a_eofflag, u_long *a_cookies, int a_ncookies)
 713  */
 714 static int
 715 smbfs_readdir(struct vop_readdir_args *ap)
 716 {
 717         struct vnode *vp = ap->a_vp;
 718         struct uio *uio = ap->a_uio;
 719         int error;
 720
 721         if (vp->v_type != VDIR)
 722                 return (EPERM);
 723 #ifdef notnow
 724         if (ap->a_ncookies) {
 725                 kprintf("smbfs_readdir: no support for cookies now...");
 726                 return (EOPNOTSUPP);
 727         }
 728 #endif
 729         if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) == 0) {
 730                 error = smbfs_readvnode(vp, uio, ap->a_cred);
 731                 vn_unlock(vp);
 732         }
 733         return error;
 734 }
 735
 736 /*
 737  * smbfs_fsync(struct vnode *a_vp, struct ucred *a_cred,
 738  *             int a_waitfor, struct thread *a_td)
 739  */
 740 /* ARGSUSED */
 741 static int
 742 smbfs_fsync(struct vop_fsync_args *ap)
 743 {
 744 /*      return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));*/
 745     return (0);
 746 }
 747
 748 /*
 749  * smbfs_print(struct vnode *a_vp)
 750  */
 751 static int
 752 smbfs_print(struct vop_print_args *ap)
 753 {
 754         struct vnode *vp = ap->a_vp;
 755         struct smbnode *np = VTOSMB(vp);
 756
 757         if (np == NULL) {
 758                 kprintf("no smbnode data\n");
 759                 return (0);
 760         }
 761         kprintf("tag VT_SMBFS, name = %s, parent = %p, opencount = %d",
 762             np->n_name, np->n_parent ? np->n_parent : NULL,
 763             np->n_opencount);
 764         lockmgr_printinfo(&vp->v_lock);
 765         kprintf("\n");
 766         return (0);
 767 }
 768
 769 /*
 770  * smbfs_pathconf(struct vnode *vp, int name, register_t *retval)
 771  */
 772 static int
 773 smbfs_pathconf(struct vop_pathconf_args *ap)
 774 {
 775         struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp));
 776         struct smb_vc *vcp = SSTOVC(smp->sm_share);
 777         register_t *retval = ap->a_retval;
 778         int error = 0;
 779
 780         switch (ap->a_name) {
 781             case _PC_LINK_MAX:
 782                 *retval = 0;
 783                 break;
 784             case _PC_NAME_MAX:
 785                 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12;
 786                 break;
 787             case _PC_PATH_MAX:
 788                 *retval = 800;  /* XXX: a correct one ? */
 789                 break;
 790             default:
 791                 error = EINVAL;
 792         }
 793         return error;
 794 }
 795
 796 /*
 797  * smbfs_strategy(struct vnode *a_vp, struct bio *a_bio)
 798  */
 799 static int
 800 smbfs_strategy(struct vop_strategy_args *ap)
 801 {
 802         struct bio *bio = ap->a_bio;
 803         struct buf *bp = bio->bio_buf;
 804         struct thread *td = NULL;
 805         int error = 0;
 806
 807         SMBVDEBUG("\n");
 808         if ((bp->b_flags & B_ASYNC) == 0)
 809                 td = curthread;         /* XXX */
 810
 811         if ((bp->b_flags & B_ASYNC) == 0 )
 812                 error = smbfs_doio(ap->a_vp, bio, proc0.p_ucred, td);
 813         return error;
 814 }
 815
 816 /*
 817  * smbfs_bmap(struct vnode *a_vp, off_t a_loffset, struct vnode **a_vpp,
 818  *            off_t *a_doffsetp, int *a_runp, int *a_runb)
 819  */
 820 static int
 821 smbfs_bmap(struct vop_bmap_args *ap)
 822 {
 823         struct vnode *vp = ap->a_vp;
 824
 825         if (ap->a_vpp != NULL)
 826                 *ap->a_vpp = vp;
 827         if (ap->a_doffsetp != NULL)
 828                 *ap->a_doffsetp = ap->a_loffset;
 829         if (ap->a_runp != NULL)
 830                 *ap->a_runp = 0;
 831         if (ap->a_runb != NULL)
 832                 *ap->a_runb = 0;
 833         return (0);
 834 }
 835
 836 /*
 837  * smbfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data,
 838  *              int fflag, struct ucred *cred, struct proc *p)
 839  */
 840 int
 841 smbfs_ioctl(struct vop_ioctl_args *ap)
 842 {
 843         return EINVAL;
 844 }
 845
 846 static char smbfs_atl[] = "rhsvda";
 847 static int
 848 smbfs_getextattr(struct vop_getextattr_args *ap)
 849 /* {
 850         IN struct vnode *a_vp;
 851         IN char *a_name;
 852         INOUT struct uio *a_uio;
 853         IN struct ucred *a_cred;
 854         IN struct thread *a_td;
 855 };
 856 */
 857 {
 858         struct vnode *vp = ap->a_vp;
 859         struct ucred *cred = ap->a_cred;
 860         struct uio *uio = ap->a_uio;
 861         const char *name = ap->a_name;
 862         struct smbnode *np = VTOSMB(vp);
 863         struct vattr vattr;
 864         char buf[10];
 865         int i, attr, error;
 866
 867         error = VOP_ACCESS(vp, VREAD, cred);
 868         if (error)
 869                 return error;
 870         error = VOP_GETATTR(vp, &vattr);
 871         if (error)
 872                 return error;
 873         if (strcmp(name, "dosattr") == 0) {
 874                 attr = np->n_dosattr;
 875                 for (i = 0; i < 6; i++, attr >>= 1)
 876                         buf[i] = (attr & 1) ? smbfs_atl[i] : '-';
 877                 buf[i] = 0;
 878                 error = uiomove(buf, i, uio);
 879
 880         } else
 881                 error = EINVAL;
 882         return error;
 883 }
 884
 885 /*
 886  * Since we expected to support F_GETLK (and SMB protocol has no such function),
 887  * it is necessary to use lf_advlock(). It would be nice if this function had
 888  * a callback mechanism because it will help to improve a level of consistency.
 889  *
 890  * smbfs_advlock(struct vnode *a_vp, caddr_t a_id, int a_op,
 891  *               struct flock *a_fl, int a_flags)
 892  */
 893 int
 894 smbfs_advlock(struct vop_advlock_args *ap)
 895 {
 896         struct vnode *vp = ap->a_vp;
 897         struct smbnode *np = VTOSMB(vp);
 898         struct flock *fl = ap->a_fl;
 899         caddr_t id = (caddr_t)1 /* ap->a_id */;
 900 /*      int flags = ap->a_flags;*/
 901         struct thread *td = curthread;          /* XXX */
 902         struct smb_cred scred;
 903         off_t start, end, size;
 904         int error, lkop;
 905
 906         if (vp->v_type == VDIR) {
 907                 /*
 908                  * SMB protocol have no support for directory locking.
 909                  * Although locks can be processed on local machine, I don't
 910                  * think that this is a good idea, because some programs
 911                  * can work wrong assuming directory is locked. So, we just
 912                  * return 'operation not supported
 913                  */
 914                  return EOPNOTSUPP;
 915         }
 916         size = np->n_size;
 917         switch (fl->l_whence) {
 918             case SEEK_SET:
 919             case SEEK_CUR:
 920                 start = fl->l_start;
 921                 break;
 922             case SEEK_END:
 923                 start = fl->l_start + size;
 924             default:
 925                 return EINVAL;
 926         }
 927         if (start < 0)
 928                 return EINVAL;
 929         if (fl->l_len == 0)
 930                 end = -1;
 931         else {
 932                 end = start + fl->l_len - 1;
 933                 if (end < start)
 934                         return EINVAL;
 935         }
 936         smb_makescred(&scred, td, td->td_proc ? td->td_proc->p_ucred : NULL);
 937         switch (ap->a_op) {
 938             case F_SETLK:
 939                 switch (fl->l_type) {
 940                     case F_WRLCK:
 941                         lkop = SMB_LOCK_EXCL;
 942                         break;
 943                     case F_RDLCK:
 944                         lkop = SMB_LOCK_SHARED;
 945                         break;
 946                     case F_UNLCK:
 947                         lkop = SMB_LOCK_RELEASE;
 948                         break;
 949                     default:
 950                         return EINVAL;
 951                 }
 952                 error = lf_advlock(ap, &np->n_lockf, size);
 953                 if (error)
 954                         break;
 955                 lkop = SMB_LOCK_EXCL;
 956                 error = smbfs_smb_lock(np, lkop, id, start, end, &scred);
 957                 if (error) {
 958                         ap->a_op = F_UNLCK;
 959                         lf_advlock(ap, &np->n_lockf, size);
 960                 }
 961                 break;
 962             case F_UNLCK:
 963                 lf_advlock(ap, &np->n_lockf, size);
 964                 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred);
 965                 break;
 966             case F_GETLK:
 967                 error = lf_advlock(ap, &np->n_lockf, size);
 968                 break;
 969             default:
 970                 return EINVAL;
 971         }
 972         return error;
 973 }
 974
 975 static int
 976 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop)
 977 {
 978         static const char *badchars = "*/:<>;?";
 979         static const char *badchars83 = " +|,";
 980         const char *cp;
 981         int i, error;
 982
 983         /*
 984          * Backslash characters, being a path delimiter, are prohibited
 985          * within a path component even for LOOKUP operations.
 986          */
 987         if (index(name, '\\') != NULL)
 988                 return ENOENT;
 989
 990         if (nameiop == NAMEI_LOOKUP)
 991                 return 0;
 992         error = ENOENT;
 993         if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) {
 994                 /*
 995                  * Name should conform 8.3 format
 996                  */
 997                 if (nmlen > 12)
 998                         return ENAMETOOLONG;
 999                 cp = index(name, '.');
1000                 if (cp == NULL)
1001                         return error;
1002                 if (cp == name || (cp - name) > 8)
1003                         return error;
1004                 cp = index(cp + 1, '.');
1005                 if (cp != NULL)
1006                         return error;
1007                 for (cp = name, i = 0; i < nmlen; i++, cp++)
1008                         if (index(badchars83, *cp) != NULL)
1009                                 return error;
1010         }
1011         for (cp = name, i = 0; i < nmlen; i++, cp++)
1012                 if (index(badchars, *cp) != NULL)
1013                         return error;
1014         return 0;
1015 }
1016
1017 /*
1018  * Things go even weird without fixed inode numbers...
1019  *
1020  * smbfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp,
1021  *              struct componentname *a_cnp)
1022  */
1023 int
1024 smbfs_lookup(struct vop_old_lookup_args *ap)
1025 {
1026         struct componentname *cnp = ap->a_cnp;
1027         struct thread *td = cnp->cn_td;
1028         struct vnode *dvp = ap->a_dvp;
1029         struct vnode **vpp = ap->a_vpp;
1030         struct vnode *vp;
1031         struct smbmount *smp;
1032         struct mount *mp = dvp->v_mount;
1033         struct smbnode *dnp;
1034         struct smbfattr fattr, *fap;
1035         struct smb_cred scred;
1036         char *name = cnp->cn_nameptr;
1037         int flags = cnp->cn_flags;
1038         int nameiop = cnp->cn_nameiop;
1039         int nmlen = cnp->cn_namelen;
1040         int lockparent, wantparent, error, isdot;
1041
1042         SMBVDEBUG("\n");
1043         cnp->cn_flags &= ~CNP_PDIRUNLOCK;
1044         *vpp = NULL;
1045         if (dvp->v_type != VDIR)
1046                 return ENOTDIR;
1047         if ((flags & CNP_ISDOTDOT) && (dvp->v_flag & VROOT)) {
1048                 SMBFSERR("invalid '..'\n");
1049                 return EIO;
1050         }
1051 #ifdef SMB_VNODE_DEBUG
1052         {
1053                 char *cp, c;
1054
1055                 cp = name + nmlen;
1056                 c = *cp;
1057                 *cp = 0;
1058                 SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name,
1059                         VTOSMB(dvp)->n_name);
1060                 *cp = c;
1061         }
1062 #endif
1063         if ((mp->mnt_flag & MNT_RDONLY) && nameiop != NAMEI_LOOKUP)
1064                 return EROFS;
1065         if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred)) != 0)
1066                 return error;
1067         lockparent = flags & CNP_LOCKPARENT;
1068         wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT);
1069         smp = VFSTOSMBFS(mp);
1070         dnp = VTOSMB(dvp);
1071         isdot = (nmlen == 1 && name[0] == '.');
1072
1073         error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop);
1074
1075         if (error)
1076                 return ENOENT;
1077
1078         error = 0;
1079         smb_makescred(&scred, td, cnp->cn_cred);
1080         fap = &fattr;
1081         if (flags & CNP_ISDOTDOT) {
1082                 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap,
1083                     &scred);
1084                 SMBVDEBUG("result of dotdot lookup: %d\n", error);
1085         } else {
1086                 fap = &fattr;
1087                 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred);
1088 /*              if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/
1089                 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error);
1090         }
1091         if (error && error != ENOENT)
1092                 return error;
1093         if (error) {                    /* entry not found */
1094                 /*
1095                  * Handle RENAME or CREATE case...
1096                  */
1097                 if ((nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && wantparent) {
1098                         error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred);
1099                         if (error)
1100                                 return error;
1101                         if (!lockparent) {
1102                                 vn_unlock(dvp);
1103                                 cnp->cn_flags |= CNP_PDIRUNLOCK;
1104                         }
1105                         return (EJUSTRETURN);
1106                 }
1107                 return ENOENT;
1108         }/* else {
1109                 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum);
1110         }*/
1111         /*
1112          * handle DELETE case ...
1113          */
1114         if (nameiop == NAMEI_DELETE) {  /* delete last component */
1115                 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred);
1116                 if (error)
1117                         return error;
1118                 if (isdot) {
1119                         vref(dvp);
1120                         *vpp = dvp;
1121                         return 0;
1122                 }
1123                 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
1124                 if (error)
1125                         return error;
1126                 *vpp = vp;
1127                 if (!lockparent) {
1128                         vn_unlock(dvp);
1129                         cnp->cn_flags |= CNP_PDIRUNLOCK;
1130                 }
1131                 return 0;
1132         }
1133         if (nameiop == NAMEI_RENAME && wantparent) {
1134                 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred);
1135                 if (error)
1136                         return error;
1137                 if (isdot)
1138                         return EISDIR;
1139                 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
1140                 if (error)
1141                         return error;
1142                 *vpp = vp;
1143                 if (!lockparent) {
1144                         vn_unlock(dvp);
1145                         cnp->cn_flags |= CNP_PDIRUNLOCK;
1146                 }
1147                 return 0;
1148         }
1149         if (flags & CNP_ISDOTDOT) {
1150                 vn_unlock(dvp);
1151                 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp);
1152                 if (error) {
1153                         vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1154                         return error;
1155                 }
1156                 if (lockparent) {
1157                         error = vn_lock(dvp, LK_EXCLUSIVE);
1158                         if (error) {
1159                                 cnp->cn_flags |= CNP_PDIRUNLOCK;
1160                                 vput(vp);
1161                                 return error;
1162                         }
1163                 }
1164                 *vpp = vp;
1165         } else if (isdot) {
1166                 vref(dvp);
1167                 *vpp = dvp;
1168         } else {
1169                 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
1170                 if (error)
1171                         return error;
1172                 *vpp = vp;
1173                 SMBVDEBUG("lookup: getnewvp!\n");
1174                 if (!lockparent) {
1175                         vn_unlock(dvp);
1176                         cnp->cn_flags |= CNP_PDIRUNLOCK;
1177                 }
1178         }
1179         return 0;
1180 }