The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/fs/smbfs/smbfs_vnops.c

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    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: releng/8.4/sys/fs/smbfs/smbfs_vnops.c 187960 2009-01-31 18:06:34Z bz $
   33  */
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/namei.h>
   37 #include <sys/kernel.h>
   38 #include <sys/proc.h>
   39 #include <sys/bio.h>
   40 #include <sys/buf.h>
   41 #include <sys/fcntl.h>
   42 #include <sys/mount.h>
   43 #include <sys/unistd.h>
   44 #include <sys/vnode.h>
   45 #include <sys/limits.h>
   46 #include <sys/lockf.h>
   47 #include <sys/stat.h>
   48 
   49 #include <vm/vm.h>
   50 #include <vm/vm_extern.h>
   51 
   52 
   53 #include <netsmb/smb.h>
   54 #include <netsmb/smb_conn.h>
   55 #include <netsmb/smb_subr.h>
   56 
   57 #include <fs/smbfs/smbfs.h>
   58 #include <fs/smbfs/smbfs_node.h>
   59 #include <fs/smbfs/smbfs_subr.h>
   60 
   61 /*
   62  * Prototypes for SMBFS vnode operations
   63  */
   64 static vop_create_t     smbfs_create;
   65 static vop_mknod_t      smbfs_mknod;
   66 static vop_open_t       smbfs_open;
   67 static vop_close_t      smbfs_close;
   68 static vop_access_t     smbfs_access;
   69 static vop_getattr_t    smbfs_getattr;
   70 static vop_setattr_t    smbfs_setattr;
   71 static vop_read_t       smbfs_read;
   72 static vop_write_t      smbfs_write;
   73 static vop_fsync_t      smbfs_fsync;
   74 static vop_remove_t     smbfs_remove;
   75 static vop_link_t       smbfs_link;
   76 static vop_lookup_t     smbfs_lookup;
   77 static vop_rename_t     smbfs_rename;
   78 static vop_mkdir_t      smbfs_mkdir;
   79 static vop_rmdir_t      smbfs_rmdir;
   80 static vop_symlink_t    smbfs_symlink;
   81 static vop_readdir_t    smbfs_readdir;
   82 static vop_strategy_t   smbfs_strategy;
   83 static vop_print_t      smbfs_print;
   84 static vop_pathconf_t   smbfs_pathconf;
   85 static vop_advlock_t    smbfs_advlock;
   86 static vop_getextattr_t smbfs_getextattr;
   87 
   88 struct vop_vector smbfs_vnodeops = {
   89         .vop_default =          &default_vnodeops,
   90 
   91         .vop_access =           smbfs_access,
   92         .vop_advlock =          smbfs_advlock,
   93         .vop_close =            smbfs_close,
   94         .vop_create =           smbfs_create,
   95         .vop_fsync =            smbfs_fsync,
   96         .vop_getattr =          smbfs_getattr,
   97         .vop_getextattr =       smbfs_getextattr,
   98         .vop_getpages =         smbfs_getpages,
   99         .vop_inactive =         smbfs_inactive,
  100         .vop_ioctl =            smbfs_ioctl,
  101         .vop_link =             smbfs_link,
  102         .vop_lookup =           smbfs_lookup,
  103         .vop_mkdir =            smbfs_mkdir,
  104         .vop_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_remove =           smbfs_remove,
  113         .vop_rename =           smbfs_rename,
  114         .vop_rmdir =            smbfs_rmdir,
  115         .vop_setattr =          smbfs_setattr,
  116 /*      .vop_setextattr =       smbfs_setextattr,*/
  117         .vop_strategy =         smbfs_strategy,
  118         .vop_symlink =          smbfs_symlink,
  119         .vop_write =            smbfs_write,
  120 };
  121 
  122 static int
  123 smbfs_access(ap)
  124         struct vop_access_args /* {
  125                 struct vnode *a_vp;
  126                 accmode_t a_accmode;
  127                 struct ucred *a_cred;
  128                 struct thread *a_td;
  129         } */ *ap;
  130 {
  131         struct vnode *vp = ap->a_vp;
  132         accmode_t accmode = ap->a_accmode;
  133         mode_t mpmode;
  134         struct smbmount *smp = VTOSMBFS(vp);
  135 
  136         SMBVDEBUG("\n");
  137         if ((accmode & 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         mpmode = vp->v_type == VREG ? smp->sm_file_mode : smp->sm_dir_mode;
  146         return (vaccess(vp->v_type, mpmode, smp->sm_uid,
  147             smp->sm_gid, ap->a_accmode, ap->a_cred, NULL));
  148 }
  149 
  150 /* ARGSUSED */
  151 static int
  152 smbfs_open(ap)
  153         struct vop_open_args /* {
  154                 struct vnode *a_vp;
  155                 int  a_mode;
  156                 struct ucred *a_cred;
  157                 struct thread *a_td;
  158         } */ *ap;
  159 {
  160         struct vnode *vp = ap->a_vp;
  161         struct smbnode *np = VTOSMB(vp);
  162         struct smb_cred scred;
  163         struct vattr vattr;
  164         int mode = ap->a_mode;
  165         int error, accmode;
  166 
  167         SMBVDEBUG("%s,%d\n", np->n_name, (np->n_flag & NOPEN) != 0);
  168         if (vp->v_type != VREG && vp->v_type != VDIR) { 
  169                 SMBFSERR("open eacces vtype=%d\n", vp->v_type);
  170                 return EACCES;
  171         }
  172         if (vp->v_type == VDIR) {
  173                 np->n_flag |= NOPEN;
  174                 return 0;
  175         }
  176         if (np->n_flag & NMODIFIED) {
  177                 if ((error = smbfs_vinvalbuf(vp, ap->a_td)) == EINTR)
  178                         return error;
  179                 smbfs_attr_cacheremove(vp);
  180                 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
  181                 if (error)
  182                         return error;
  183                 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
  184         } else {
  185                 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
  186                 if (error)
  187                         return error;
  188                 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) {
  189                         error = smbfs_vinvalbuf(vp, ap->a_td);
  190                         if (error == EINTR)
  191                                 return error;
  192                         np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
  193                 }
  194         }
  195         if ((np->n_flag & NOPEN) != 0)
  196                 return 0;
  197         /*
  198          * Use DENYNONE to give unixy semantics of permitting
  199          * everything not forbidden by permissions.  Ie denial
  200          * is up to server with clients/openers needing to use
  201          * advisory locks for further control.
  202          */
  203         accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD;
  204         if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0)
  205                 accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW;
  206         smb_makescred(&scred, ap->a_td, ap->a_cred);
  207         error = smbfs_smb_open(np, accmode, &scred);
  208         if (error) {
  209                 if (mode & FWRITE)
  210                         return EACCES;
  211                 else if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
  212                         accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD;
  213                         error = smbfs_smb_open(np, accmode, &scred);
  214                 }
  215         }
  216         if (error == 0) {
  217                 np->n_flag |= NOPEN;
  218                 vnode_create_vobject(ap->a_vp, vattr.va_size, ap->a_td);
  219         }
  220         smbfs_attr_cacheremove(vp);
  221         return error;
  222 }
  223 
  224 static int
  225 smbfs_close(ap)
  226         struct vop_close_args /* {
  227                 struct vnodeop_desc *a_desc;
  228                 struct vnode *a_vp;
  229                 int  a_fflag;
  230                 struct ucred *a_cred;
  231                 struct thread *a_td;
  232         } */ *ap;
  233 {
  234         struct vnode *vp = ap->a_vp;
  235         struct thread *td = ap->a_td;
  236         struct smbnode *np = VTOSMB(vp);
  237         struct smb_cred scred;
  238 
  239         if (vp->v_type == VDIR && (np->n_flag & NOPEN) != 0 &&
  240             np->n_dirseq != NULL) {
  241                 smb_makescred(&scred, td, ap->a_cred);
  242                 smbfs_findclose(np->n_dirseq, &scred);
  243                 np->n_dirseq = NULL;
  244         }
  245         return 0;
  246 }
  247 
  248 /*
  249  * smbfs_getattr call from vfs.
  250  */
  251 static int
  252 smbfs_getattr(ap)
  253         struct vop_getattr_args /* {
  254                 struct vnode *a_vp;
  255                 struct vattr *a_vap;
  256                 struct ucred *a_cred;
  257         } */ *ap;
  258 {
  259         struct vnode *vp = ap->a_vp;
  260         struct smbnode *np = VTOSMB(vp);
  261         struct vattr *va=ap->a_vap;
  262         struct smbfattr fattr;
  263         struct smb_cred scred;
  264         u_quad_t oldsize;
  265         int error;
  266 
  267         SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_vflag & VV_ROOT) != 0);
  268         error = smbfs_attr_cachelookup(vp, va);
  269         if (!error)
  270                 return 0;
  271         SMBVDEBUG("not in the cache\n");
  272         smb_makescred(&scred, curthread, ap->a_cred);
  273         oldsize = np->n_size;
  274         error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred);
  275         if (error) {
  276                 SMBVDEBUG("error %d\n", error);
  277                 return error;
  278         }
  279         smbfs_attr_cacheenter(vp, &fattr);
  280         smbfs_attr_cachelookup(vp, va);
  281         if (np->n_flag & NOPEN)
  282                 np->n_size = oldsize;
  283         return 0;
  284 }
  285 
  286 static int
  287 smbfs_setattr(ap)
  288         struct vop_setattr_args /* {
  289                 struct vnode *a_vp;
  290                 struct vattr *a_vap;
  291                 struct ucred *a_cred;
  292         } */ *ap;
  293 {
  294         struct vnode *vp = ap->a_vp;
  295         struct smbnode *np = VTOSMB(vp);
  296         struct vattr *vap = ap->a_vap;
  297         struct timespec *mtime, *atime;
  298         struct smb_cred scred;
  299         struct smb_share *ssp = np->n_mount->sm_share;
  300         struct smb_vc *vcp = SSTOVC(ssp);
  301         struct thread *td = curthread;
  302         u_quad_t tsize = 0;
  303         int isreadonly, doclose, error = 0;
  304         int old_n_dosattr;
  305 
  306         SMBVDEBUG("\n");
  307         if (vap->va_flags != VNOVAL)
  308                 return EOPNOTSUPP;
  309         isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY);
  310         /*
  311          * Disallow write attempts if the filesystem is mounted read-only.
  312          */
  313         if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 
  314              vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
  315              vap->va_mode != (mode_t)VNOVAL) && isreadonly)
  316                 return EROFS;
  317         smb_makescred(&scred, td, ap->a_cred);
  318         if (vap->va_size != VNOVAL) {
  319                 switch (vp->v_type) {
  320                     case VDIR:
  321                         return EISDIR;
  322                     case VREG:
  323                         break;
  324                     default:
  325                         return EINVAL;
  326                 };
  327                 if (isreadonly)
  328                         return EROFS;
  329                 doclose = 0;
  330                 vnode_pager_setsize(vp, (u_long)vap->va_size);
  331                 tsize = np->n_size;
  332                 np->n_size = vap->va_size;
  333                 if ((np->n_flag & NOPEN) == 0) {
  334                         error = smbfs_smb_open(np,
  335                                                SMB_SM_DENYNONE|SMB_AM_OPENRW,
  336                                                &scred);
  337                         if (error == 0)
  338                                 doclose = 1;
  339                 }
  340                 if (error == 0)
  341                         error = smbfs_smb_setfsize(np, vap->va_size, &scred);
  342                 if (doclose)
  343                         smbfs_smb_close(ssp, np->n_fid, NULL, &scred);
  344                 if (error) {
  345                         np->n_size = tsize;
  346                         vnode_pager_setsize(vp, (u_long)tsize);
  347                         return error;
  348                 }
  349         }
  350         if (vap->va_mode != (mode_t)VNOVAL) {
  351                 old_n_dosattr = np->n_dosattr;
  352                 if (vap->va_mode & S_IWUSR)
  353                         np->n_dosattr &= ~SMB_FA_RDONLY;
  354                 else
  355                         np->n_dosattr |= SMB_FA_RDONLY;
  356                 if (np->n_dosattr != old_n_dosattr) {
  357                         error = smbfs_smb_setpattr(np, np->n_dosattr, NULL, &scred);
  358                         if (error)
  359                                 return error;
  360                 }
  361         }
  362         mtime = atime = NULL;
  363         if (vap->va_mtime.tv_sec != VNOVAL)
  364                 mtime = &vap->va_mtime;
  365         if (vap->va_atime.tv_sec != VNOVAL)
  366                 atime = &vap->va_atime;
  367         if (mtime != atime) {
  368                 if (vap->va_vaflags & VA_UTIMES_NULL) {
  369                         error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td);
  370                         if (error)
  371                                 error = VOP_ACCESS(vp, VWRITE, ap->a_cred, td);
  372                 } else
  373                         error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td);
  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_flag & NOPEN) == 0) {
  385                         if (vcp->vc_flags & SMBV_WIN95) {
  386                                 error = VOP_OPEN(vp, FWRITE, ap->a_cred, td,
  387                                     NULL);
  388                                 if (!error) {
  389 /*                                      error = smbfs_smb_setfattrNT(np, 0,
  390                                             mtime, atime, &scred);
  391                                         VOP_GETATTR(vp, &vattr, ap->a_cred); */
  392                                         if (mtime)
  393                                                 np->n_mtime = *mtime;
  394                                         VOP_CLOSE(vp, FWRITE, ap->a_cred, td);
  395                                 }
  396                         } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) {
  397                                 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred);
  398 /*                              error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/
  399                         } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) {
  400                                 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred);
  401                         } else {
  402                                 error = smbfs_smb_setpattr(np, 0, mtime, &scred);
  403                         }
  404                 } else {
  405                         if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) {
  406                                 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred);
  407                         } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) {
  408                                 error = smbfs_smb_setftime(np, mtime, atime, &scred);
  409                         } else {
  410                                 /*
  411                                  * I have no idea how to handle this for core
  412                                  * level servers. The possible solution is to
  413                                  * update mtime after file is closed.
  414                                  */
  415                                  SMBERROR("can't update times on an opened file\n");
  416                         }
  417                 }
  418         }
  419         /*
  420          * Invalidate attribute cache in case if server doesn't set
  421          * required attributes.
  422          */
  423         smbfs_attr_cacheremove(vp);     /* invalidate cache */
  424         VOP_GETATTR(vp, vap, ap->a_cred);
  425         np->n_mtime.tv_sec = vap->va_mtime.tv_sec;
  426         return error;
  427 }
  428 /*
  429  * smbfs_read call.
  430  */
  431 static int
  432 smbfs_read(ap)
  433         struct vop_read_args /* {
  434                 struct vnode *a_vp;
  435                 struct uio *a_uio;
  436                 int  a_ioflag;
  437                 struct ucred *a_cred;
  438         } */ *ap;
  439 {
  440         struct vnode *vp = ap->a_vp;
  441         struct uio *uio = ap->a_uio;
  442 
  443         SMBVDEBUG("\n");
  444         if (vp->v_type != VREG && vp->v_type != VDIR)
  445                 return EPERM;
  446         return smbfs_readvnode(vp, uio, ap->a_cred);
  447 }
  448 
  449 static int
  450 smbfs_write(ap)
  451         struct vop_write_args /* {
  452                 struct vnode *a_vp;
  453                 struct uio *a_uio;
  454                 int  a_ioflag;
  455                 struct ucred *a_cred;
  456         } */ *ap;
  457 {
  458         struct vnode *vp = ap->a_vp;
  459         struct uio *uio = ap->a_uio;
  460 
  461         SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid);
  462         if (vp->v_type != VREG)
  463                 return (EPERM);
  464         return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag);
  465 }
  466 /*
  467  * smbfs_create call
  468  * Create a regular file. On entry the directory to contain the file being
  469  * created is locked.  We must release before we return. We must also free
  470  * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or
  471  * only if the SAVESTART bit in cn_flags is clear on success.
  472  */
  473 static int
  474 smbfs_create(ap)
  475         struct vop_create_args /* {
  476                 struct vnode *a_dvp;
  477                 struct vnode **a_vpp;
  478                 struct componentname *a_cnp;
  479                 struct vattr *a_vap;
  480         } */ *ap;
  481 {
  482         struct vnode *dvp = ap->a_dvp;
  483         struct vattr *vap = ap->a_vap;
  484         struct vnode **vpp=ap->a_vpp;
  485         struct componentname *cnp = ap->a_cnp;
  486         struct smbnode *dnp = VTOSMB(dvp);
  487         struct vnode *vp;
  488         struct vattr vattr;
  489         struct smbfattr fattr;
  490         struct smb_cred scred;
  491         char *name = cnp->cn_nameptr;
  492         int nmlen = cnp->cn_namelen;
  493         int error;
  494         
  495 
  496         SMBVDEBUG("\n");
  497         *vpp = NULL;
  498         if (vap->va_type != VREG)
  499                 return EOPNOTSUPP;
  500         if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
  501                 return error;
  502         smb_makescred(&scred, cnp->cn_thread, cnp->cn_cred);
  503         
  504         error = smbfs_smb_create(dnp, name, nmlen, &scred);
  505         if (error)
  506                 return error;
  507         error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred);
  508         if (error)
  509                 return error;
  510         error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp);
  511         if (error)
  512                 return error;
  513         *vpp = vp;
  514         if (cnp->cn_flags & MAKEENTRY)
  515                 cache_enter(dvp, vp, cnp);
  516         return error;
  517 }
  518 
  519 static int
  520 smbfs_remove(ap)
  521         struct vop_remove_args /* {
  522                 struct vnodeop_desc *a_desc;
  523                 struct vnode * a_dvp;
  524                 struct vnode * a_vp;
  525                 struct componentname * a_cnp;
  526         } */ *ap;
  527 {
  528         struct vnode *vp = ap->a_vp;
  529 /*      struct vnode *dvp = ap->a_dvp;*/
  530         struct componentname *cnp = ap->a_cnp;
  531         struct smbnode *np = VTOSMB(vp);
  532         struct smb_cred scred;
  533         int error;
  534 
  535         if (vp->v_type == VDIR || (np->n_flag & NOPEN) != 0 || vrefcnt(vp) != 1)
  536                 return EPERM;
  537         smb_makescred(&scred, cnp->cn_thread, cnp->cn_cred);
  538         error = smbfs_smb_delete(np, &scred);
  539         if (error == 0)
  540                 np->n_flag |= NGONE;
  541         cache_purge(vp);
  542         return error;
  543 }
  544 
  545 /*
  546  * smbfs_file rename call
  547  */
  548 static int
  549 smbfs_rename(ap)
  550         struct vop_rename_args  /* {
  551                 struct vnode *a_fdvp;
  552                 struct vnode *a_fvp;
  553                 struct componentname *a_fcnp;
  554                 struct vnode *a_tdvp;
  555                 struct vnode *a_tvp;
  556                 struct componentname *a_tcnp;
  557         } */ *ap;
  558 {
  559         struct vnode *fvp = ap->a_fvp;
  560         struct vnode *tvp = ap->a_tvp;
  561         struct vnode *fdvp = ap->a_fdvp;
  562         struct vnode *tdvp = ap->a_tdvp;
  563         struct componentname *tcnp = ap->a_tcnp;
  564 /*      struct componentname *fcnp = ap->a_fcnp;*/
  565         struct smb_cred scred;
  566         u_int16_t flags = 6;
  567         int error=0;
  568 
  569         /* Check for cross-device rename */
  570         if ((fvp->v_mount != tdvp->v_mount) ||
  571             (tvp && (fvp->v_mount != tvp->v_mount))) {
  572                 error = EXDEV;
  573                 goto out;
  574         }
  575 
  576         if (tvp && vrefcnt(tvp) > 1) {
  577                 error = EBUSY;
  578                 goto out;
  579         }
  580         flags = 0x10;                   /* verify all writes */
  581         if (fvp->v_type == VDIR) {
  582                 flags |= 2;
  583         } else if (fvp->v_type == VREG) {
  584                 flags |= 1;
  585         } else {
  586                 error = EINVAL;
  587                 goto out;
  588         }
  589         smb_makescred(&scred, tcnp->cn_thread, tcnp->cn_cred);
  590         /*
  591          * It seems that Samba doesn't implement SMB_COM_MOVE call...
  592          */
  593 #ifdef notnow
  594         if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) {
  595                 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp),
  596                     tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred);
  597         } else
  598 #endif
  599         {
  600                 /*
  601                  * We have to do the work atomicaly
  602                  */
  603                 if (tvp && tvp != fvp) {
  604                         error = smbfs_smb_delete(VTOSMB(tvp), &scred);
  605                         if (error)
  606                                 goto out_cacherem;
  607                         VTOSMB(fvp)->n_flag |= NGONE;
  608                 }
  609                 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp),
  610                     tcnp->cn_nameptr, tcnp->cn_namelen, &scred);
  611         }
  612 
  613         if (fvp->v_type == VDIR) {
  614                 if (tvp != NULL && tvp->v_type == VDIR)
  615                         cache_purge(tdvp);
  616                 cache_purge(fdvp);
  617         }
  618 
  619 out_cacherem:
  620         smbfs_attr_cacheremove(fdvp);
  621         smbfs_attr_cacheremove(tdvp);
  622 out:
  623         if (tdvp == tvp)
  624                 vrele(tdvp);
  625         else
  626                 vput(tdvp);
  627         if (tvp)
  628                 vput(tvp);
  629         vrele(fdvp);
  630         vrele(fvp);
  631 #ifdef possible_mistake
  632         vgone(fvp);
  633         if (tvp)
  634                 vgone(tvp);
  635 #endif
  636         return error;
  637 }
  638 
  639 /*
  640  * somtime it will come true...
  641  */
  642 static int
  643 smbfs_link(ap)
  644         struct vop_link_args /* {
  645                 struct vnode *a_tdvp;
  646                 struct vnode *a_vp;
  647                 struct componentname *a_cnp;
  648         } */ *ap;
  649 {
  650         return EOPNOTSUPP;
  651 }
  652 
  653 /*
  654  * smbfs_symlink link create call.
  655  * Sometime it will be functional...
  656  */
  657 static int
  658 smbfs_symlink(ap)
  659         struct vop_symlink_args /* {
  660                 struct vnode *a_dvp;
  661                 struct vnode **a_vpp;
  662                 struct componentname *a_cnp;
  663                 struct vattr *a_vap;
  664                 char *a_target;
  665         } */ *ap;
  666 {
  667         return EOPNOTSUPP;
  668 }
  669 
  670 static int
  671 smbfs_mknod(ap) 
  672         struct vop_mknod_args /* {
  673         } */ *ap;
  674 {
  675         return EOPNOTSUPP;
  676 }
  677 
  678 static int
  679 smbfs_mkdir(ap)
  680         struct vop_mkdir_args /* {
  681                 struct vnode *a_dvp;
  682                 struct vnode **a_vpp;
  683                 struct componentname *a_cnp;
  684                 struct vattr *a_vap;
  685         } */ *ap;
  686 {
  687         struct vnode *dvp = ap->a_dvp;
  688 /*      struct vattr *vap = ap->a_vap;*/
  689         struct vnode *vp;
  690         struct componentname *cnp = ap->a_cnp;
  691         struct smbnode *dnp = VTOSMB(dvp);
  692         struct vattr vattr;
  693         struct smb_cred scred;
  694         struct smbfattr fattr;
  695         char *name = cnp->cn_nameptr;
  696         int len = cnp->cn_namelen;
  697         int error;
  698 
  699         if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred))) {
  700                 return error;
  701         }       
  702         if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.'))))
  703                 return EEXIST;
  704         smb_makescred(&scred, cnp->cn_thread, cnp->cn_cred);
  705         error = smbfs_smb_mkdir(dnp, name, len, &scred);
  706         if (error)
  707                 return error;
  708         error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred);
  709         if (error)
  710                 return error;
  711         error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp);
  712         if (error)
  713                 return error;
  714         *ap->a_vpp = vp;
  715         return 0;
  716 }
  717 
  718 /*
  719  * smbfs_remove directory call
  720  */
  721 static int
  722 smbfs_rmdir(ap)
  723         struct vop_rmdir_args /* {
  724                 struct vnode *a_dvp;
  725                 struct vnode *a_vp;
  726                 struct componentname *a_cnp;
  727         } */ *ap;
  728 {
  729         struct vnode *vp = ap->a_vp;
  730         struct vnode *dvp = ap->a_dvp;
  731         struct componentname *cnp = ap->a_cnp;
  732 /*      struct smbmount *smp = VTOSMBFS(vp);*/
  733         struct smbnode *dnp = VTOSMB(dvp);
  734         struct smbnode *np = VTOSMB(vp);
  735         struct smb_cred scred;
  736         int error;
  737 
  738         if (dvp == vp)
  739                 return EINVAL;
  740 
  741         smb_makescred(&scred, cnp->cn_thread, cnp->cn_cred);
  742         error = smbfs_smb_rmdir(np, &scred);
  743         if (error == 0)
  744                 np->n_flag |= NGONE;
  745         dnp->n_flag |= NMODIFIED;
  746         smbfs_attr_cacheremove(dvp);
  747 /*      cache_purge(dvp);*/
  748         cache_purge(vp);
  749         return error;
  750 }
  751 
  752 /*
  753  * smbfs_readdir call
  754  */
  755 static int
  756 smbfs_readdir(ap)
  757         struct vop_readdir_args /* {
  758                 struct vnode *a_vp;
  759                 struct uio *a_uio;
  760                 struct ucred *a_cred;
  761                 int *a_eofflag;
  762                 u_long *a_cookies;
  763                 int a_ncookies;
  764         } */ *ap;
  765 {
  766         struct vnode *vp = ap->a_vp;
  767         struct uio *uio = ap->a_uio;
  768         int error;
  769 
  770         if (vp->v_type != VDIR)
  771                 return (EPERM);
  772 #ifdef notnow
  773         if (ap->a_ncookies) {
  774                 printf("smbfs_readdir: no support for cookies now...");
  775                 return (EOPNOTSUPP);
  776         }
  777 #endif
  778         error = smbfs_readvnode(vp, uio, ap->a_cred);
  779         return error;
  780 }
  781 
  782 /* ARGSUSED */
  783 static int
  784 smbfs_fsync(ap)
  785         struct vop_fsync_args /* {
  786                 struct vnodeop_desc *a_desc;
  787                 struct vnode * a_vp;
  788                 struct ucred * a_cred;
  789                 int  a_waitfor;
  790                 struct thread * a_td;
  791         } */ *ap;
  792 {
  793 /*      return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));*/
  794     return (0);
  795 }
  796 
  797 static 
  798 int smbfs_print (ap) 
  799         struct vop_print_args /* {
  800         struct vnode *a_vp;
  801         } */ *ap;
  802 {
  803         struct vnode *vp = ap->a_vp;
  804         struct smbnode *np = VTOSMB(vp);
  805 
  806         if (np == NULL) {
  807                 printf("no smbnode data\n");
  808                 return (0);
  809         }
  810         printf("\tname = %s, parent = %p, open = %d\n", np->n_name,
  811             np->n_parent ? np->n_parent : NULL, (np->n_flag & NOPEN) != 0);
  812         return (0);
  813 }
  814 
  815 static int
  816 smbfs_pathconf (ap)
  817         struct vop_pathconf_args  /* {
  818         struct vnode *vp;
  819         int name;
  820         register_t *retval;
  821         } */ *ap;
  822 {
  823         struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp));
  824         struct smb_vc *vcp = SSTOVC(smp->sm_share);
  825         register_t *retval = ap->a_retval;
  826         int error = 0;
  827         
  828         switch (ap->a_name) {
  829             case _PC_LINK_MAX:
  830                 *retval = 0;
  831                 break;
  832             case _PC_NAME_MAX:
  833                 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12;
  834                 break;
  835             case _PC_PATH_MAX:
  836                 *retval = 800;  /* XXX: a correct one ? */
  837                 break;
  838             default:
  839                 error = EINVAL;
  840         }
  841         return error;
  842 }
  843 
  844 static int
  845 smbfs_strategy (ap) 
  846         struct vop_strategy_args /* {
  847         struct buf *a_bp
  848         } */ *ap;
  849 {
  850         struct buf *bp=ap->a_bp;
  851         struct ucred *cr;
  852         struct thread *td;
  853 
  854         SMBVDEBUG("\n");
  855         if (bp->b_flags & B_ASYNC)
  856                 td = (struct thread *)0;
  857         else
  858                 td = curthread; /* XXX */
  859         if (bp->b_iocmd == BIO_READ)
  860                 cr = bp->b_rcred;
  861         else
  862                 cr = bp->b_wcred;
  863 
  864         if ((bp->b_flags & B_ASYNC) == 0 )
  865                 (void)smbfs_doio(ap->a_vp, bp, cr, td);
  866         return (0);
  867 }
  868 
  869 int
  870 smbfs_ioctl(ap)
  871         struct vop_ioctl_args /* {
  872                 struct vnode *a_vp;
  873                 u_long a_command;
  874                 caddr_t a_data;
  875                 int fflag;
  876                 struct ucred *cred;
  877                 struct thread *td;
  878         } */ *ap;
  879 {
  880         return ENOTTY;
  881 }
  882 
  883 static char smbfs_atl[] = "rhsvda";
  884 static int
  885 smbfs_getextattr(struct vop_getextattr_args *ap)
  886 /* {
  887         IN struct vnode *a_vp;
  888         IN char *a_name;
  889         INOUT struct uio *a_uio;
  890         IN struct ucred *a_cred;
  891         IN struct thread *a_td;
  892 };
  893 */
  894 {
  895         struct vnode *vp = ap->a_vp;
  896         struct thread *td = ap->a_td;
  897         struct ucred *cred = ap->a_cred;
  898         struct uio *uio = ap->a_uio;
  899         const char *name = ap->a_name;
  900         struct smbnode *np = VTOSMB(vp);
  901         struct vattr vattr;
  902         char buf[10];
  903         int i, attr, error;
  904 
  905         error = VOP_ACCESS(vp, VREAD, cred, td);
  906         if (error)
  907                 return error;
  908         error = VOP_GETATTR(vp, &vattr, cred);
  909         if (error)
  910                 return error;
  911         if (strcmp(name, "dosattr") == 0) {
  912                 attr = np->n_dosattr;
  913                 for (i = 0; i < 6; i++, attr >>= 1)
  914                         buf[i] = (attr & 1) ? smbfs_atl[i] : '-';
  915                 buf[i] = 0;
  916                 error = uiomove(buf, i, uio);
  917                 
  918         } else
  919                 error = EINVAL;
  920         return error;
  921 }
  922 
  923 /*
  924  * Since we expected to support F_GETLK (and SMB protocol has no such function),
  925  * it is necessary to use lf_advlock(). It would be nice if this function had
  926  * a callback mechanism because it will help to improve a level of consistency.
  927  */
  928 int
  929 smbfs_advlock(ap)
  930         struct vop_advlock_args /* {
  931                 struct vnode *a_vp;
  932                 caddr_t  a_id;
  933                 int  a_op;
  934                 struct flock *a_fl;
  935                 int  a_flags;
  936         } */ *ap;
  937 {
  938         struct vnode *vp = ap->a_vp;
  939         struct smbnode *np = VTOSMB(vp);
  940         struct flock *fl = ap->a_fl;
  941         caddr_t id = (caddr_t)1 /* ap->a_id */;
  942 /*      int flags = ap->a_flags;*/
  943         struct thread *td = curthread;
  944         struct smb_cred scred;
  945         u_quad_t size;
  946         off_t start, end, oadd;
  947         int error, lkop;
  948 
  949         if (vp->v_type == VDIR) {
  950                 /*
  951                  * SMB protocol have no support for directory locking.
  952                  * Although locks can be processed on local machine, I don't
  953                  * think that this is a good idea, because some programs
  954                  * can work wrong assuming directory is locked. So, we just
  955                  * return 'operation not supported
  956                  */
  957                  return EOPNOTSUPP;
  958         }
  959         size = np->n_size;
  960         switch (fl->l_whence) {
  961 
  962         case SEEK_SET:
  963         case SEEK_CUR:
  964                 start = fl->l_start;
  965                 break;
  966 
  967         case SEEK_END:
  968                 if (size > OFF_MAX ||
  969                     (fl->l_start > 0 && size > OFF_MAX - fl->l_start))
  970                         return EOVERFLOW;
  971                 start = size + fl->l_start;
  972                 break;
  973 
  974         default:
  975                 return EINVAL;
  976         }
  977         if (start < 0)
  978                 return EINVAL;
  979         if (fl->l_len < 0) {
  980                 if (start == 0)
  981                         return EINVAL;
  982                 end = start - 1;
  983                 start += fl->l_len;
  984                 if (start < 0)
  985                         return EINVAL;
  986         } else if (fl->l_len == 0)
  987                 end = -1;
  988         else {
  989                 oadd = fl->l_len - 1;
  990                 if (oadd > OFF_MAX - start)
  991                         return EOVERFLOW;
  992                 end = start + oadd;
  993         }
  994         smb_makescred(&scred, td, td->td_ucred);
  995         switch (ap->a_op) {
  996             case F_SETLK:
  997                 switch (fl->l_type) {
  998                     case F_WRLCK:
  999                         lkop = SMB_LOCK_EXCL;
 1000                         break;
 1001                     case F_RDLCK:
 1002                         lkop = SMB_LOCK_SHARED;
 1003                         break;
 1004                     case F_UNLCK:
 1005                         lkop = SMB_LOCK_RELEASE;
 1006                         break;
 1007                     default:
 1008                         return EINVAL;
 1009                 }
 1010                 error = lf_advlock(ap, &vp->v_lockf, size);
 1011                 if (error)
 1012                         break;
 1013                 lkop = SMB_LOCK_EXCL;
 1014                 error = smbfs_smb_lock(np, lkop, id, start, end, &scred);
 1015                 if (error) {
 1016                         int oldtype = fl->l_type;
 1017                         fl->l_type = F_UNLCK;
 1018                         ap->a_op = F_UNLCK;
 1019                         lf_advlock(ap, &vp->v_lockf, size);
 1020                         fl->l_type = oldtype;
 1021                 }
 1022                 break;
 1023             case F_UNLCK:
 1024                 lf_advlock(ap, &vp->v_lockf, size);
 1025                 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred);
 1026                 break;
 1027             case F_GETLK:
 1028                 error = lf_advlock(ap, &vp->v_lockf, size);
 1029                 break;
 1030             default:
 1031                 return EINVAL;
 1032         }
 1033         return error;
 1034 }
 1035 
 1036 static int
 1037 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop)
 1038 {
 1039         static const char *badchars = "*/:<>;?";
 1040         static const char *badchars83 = " +|,[]=";
 1041         const char *cp;
 1042         int i, error;
 1043 
 1044         /*
 1045          * Backslash characters, being a path delimiter, are prohibited
 1046          * within a path component even for LOOKUP operations.
 1047          */
 1048         if (index(name, '\\') != NULL)
 1049                 return ENOENT;
 1050 
 1051         if (nameiop == LOOKUP)
 1052                 return 0;
 1053         error = ENOENT;
 1054         if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) {
 1055                 /*
 1056                  * Name should conform 8.3 format
 1057                  */
 1058                 if (nmlen > 12)
 1059                         return ENAMETOOLONG;
 1060                 cp = index(name, '.');
 1061                 if (cp == NULL)
 1062                         return error;
 1063                 if (cp == name || (cp - name) > 8)
 1064                         return error;
 1065                 cp = index(cp + 1, '.');
 1066                 if (cp != NULL)
 1067                         return error;
 1068                 for (cp = name, i = 0; i < nmlen; i++, cp++)
 1069                         if (index(badchars83, *cp) != NULL)
 1070                                 return error;
 1071         }
 1072         for (cp = name, i = 0; i < nmlen; i++, cp++)
 1073                 if (index(badchars, *cp) != NULL)
 1074                         return error;
 1075         return 0;
 1076 }
 1077 
 1078 /*
 1079  * Things go even weird without fixed inode numbers...
 1080  */
 1081 int
 1082 smbfs_lookup(ap)
 1083         struct vop_lookup_args /* {
 1084                 struct vnodeop_desc *a_desc;
 1085                 struct vnode *a_dvp;
 1086                 struct vnode **a_vpp;
 1087                 struct componentname *a_cnp;
 1088         } */ *ap;
 1089 {
 1090         struct componentname *cnp = ap->a_cnp;
 1091         struct thread *td = cnp->cn_thread;
 1092         struct vnode *dvp = ap->a_dvp;
 1093         struct vnode **vpp = ap->a_vpp;
 1094         struct vnode *vp;
 1095         struct smbmount *smp;
 1096         struct mount *mp = dvp->v_mount;
 1097         struct smbnode *dnp;
 1098         struct smbfattr fattr, *fap;
 1099         struct smb_cred scred;
 1100         char *name = cnp->cn_nameptr;
 1101         int flags = cnp->cn_flags;
 1102         int nameiop = cnp->cn_nameiop;
 1103         int nmlen = cnp->cn_namelen;
 1104         int error, islastcn, isdot;
 1105         int killit;
 1106         
 1107         SMBVDEBUG("\n");
 1108         if (dvp->v_type != VDIR)
 1109                 return ENOTDIR;
 1110         if ((flags & ISDOTDOT) && (dvp->v_vflag & VV_ROOT)) {
 1111                 SMBFSERR("invalid '..'\n");
 1112                 return EIO;
 1113         }
 1114 #ifdef SMB_VNODE_DEBUG
 1115         {
 1116                 char *cp, c;
 1117 
 1118                 cp = name + nmlen;
 1119                 c = *cp;
 1120                 *cp = 0;
 1121                 SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name, 
 1122                         VTOSMB(dvp)->n_name);
 1123                 *cp = c;
 1124         }
 1125 #endif
 1126         islastcn = flags & ISLASTCN;
 1127         if (islastcn && (mp->mnt_flag & MNT_RDONLY) && (nameiop != LOOKUP))
 1128                 return EROFS;
 1129         if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, td)) != 0)
 1130                 return error;
 1131         smp = VFSTOSMBFS(mp);
 1132         dnp = VTOSMB(dvp);
 1133         isdot = (nmlen == 1 && name[0] == '.');
 1134 
 1135         error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop);
 1136 
 1137         if (error) 
 1138                 return ENOENT;
 1139 
 1140         error = cache_lookup(dvp, vpp, cnp);
 1141         SMBVDEBUG("cache_lookup returned %d\n", error);
 1142         if (error > 0)
 1143                 return error;
 1144         if (error) {            /* name was found */
 1145                 struct vattr vattr;
 1146 
 1147                 killit = 0;
 1148                 vp = *vpp;
 1149                 error = VOP_GETATTR(vp, &vattr, cnp->cn_cred);
 1150                 /*
 1151                  * If the file type on the server is inconsistent
 1152                  * with what it was when we created the vnode,
 1153                  * kill the bogus vnode now and fall through to
 1154                  * the code below to create a new one with the
 1155                  * right type.
 1156                  */
 1157                 if (error == 0 &&
 1158                    ((vp->v_type == VDIR &&
 1159                    (VTOSMB(vp)->n_dosattr & SMB_FA_DIR) == 0) ||
 1160                    (vp->v_type == VREG &&
 1161                    (VTOSMB(vp)->n_dosattr & SMB_FA_DIR) != 0)))
 1162                    killit = 1;
 1163                 else if (error == 0
 1164              /*    && vattr.va_ctime.tv_sec == VTOSMB(vp)->n_ctime*/) {
 1165                      if (nameiop != LOOKUP && islastcn)
 1166                              cnp->cn_flags |= SAVENAME;
 1167                      SMBVDEBUG("use cached vnode\n");
 1168                      return (0);
 1169                 }
 1170                 cache_purge(vp);
 1171                 /*
 1172                  * XXX This is not quite right, if '.' is
 1173                  * inconsistent, we really need to start the lookup
 1174                  * all over again.  Hopefully there is some other
 1175                  * guarantee that prevents this case from happening.
 1176                  */
 1177                 if (killit && vp != dvp)
 1178                         vgone(vp);
 1179                 if (vp != dvp)
 1180                         vput(vp);
 1181                 else
 1182                         vrele(vp);
 1183                 *vpp = NULLVP;
 1184         }
 1185         /* 
 1186          * entry is not in the cache or has been expired
 1187          */
 1188         error = 0;
 1189         *vpp = NULLVP;
 1190         smb_makescred(&scred, td, cnp->cn_cred);
 1191         fap = &fattr;
 1192         if (flags & ISDOTDOT) {
 1193                 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap,
 1194                     &scred);
 1195                 SMBVDEBUG("result of dotdot lookup: %d\n", error);
 1196         } else {
 1197                 fap = &fattr;
 1198                 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred);
 1199 /*              if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/
 1200                 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error);
 1201         }
 1202         if (error && error != ENOENT)
 1203                 return error;
 1204         if (error) {                    /* entry not found */
 1205                 /*
 1206                  * Handle RENAME or CREATE case...
 1207                  */
 1208                 if ((nameiop == CREATE || nameiop == RENAME) && islastcn) {
 1209                         error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
 1210                         if (error)
 1211                                 return error;
 1212                         cnp->cn_flags |= SAVENAME;
 1213                         return (EJUSTRETURN);
 1214                 }
 1215                 return ENOENT;
 1216         }/* else {
 1217                 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum);
 1218         }*/
 1219         /*
 1220          * handle DELETE case ...
 1221          */
 1222         if (nameiop == DELETE && islastcn) {    /* delete last component */
 1223                 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
 1224                 if (error)
 1225                         return error;
 1226                 if (isdot) {
 1227                         VREF(dvp);
 1228                         *vpp = dvp;
 1229                         return 0;
 1230                 }
 1231                 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
 1232                 if (error)
 1233                         return error;
 1234                 *vpp = vp;
 1235                 cnp->cn_flags |= SAVENAME;
 1236                 return 0;
 1237         }
 1238         if (nameiop == RENAME && islastcn) {
 1239                 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
 1240                 if (error)
 1241                         return error;
 1242                 if (isdot)
 1243                         return EISDIR;
 1244                 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
 1245                 if (error)
 1246                         return error;
 1247                 *vpp = vp;
 1248                 cnp->cn_flags |= SAVENAME;
 1249                 return 0;
 1250         }
 1251         if (flags & ISDOTDOT) {
 1252                 VOP_UNLOCK(dvp, 0);
 1253                 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp);
 1254                 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
 1255                 if (error)
 1256                         return error;
 1257                 *vpp = vp;
 1258         } else if (isdot) {
 1259                 vref(dvp);
 1260                 *vpp = dvp;
 1261         } else {
 1262                 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
 1263                 if (error)
 1264                         return error;
 1265                 *vpp = vp;
 1266                 SMBVDEBUG("lookup: getnewvp!\n");
 1267         }
 1268         if ((cnp->cn_flags & MAKEENTRY)/* && !islastcn*/) {
 1269 /*              VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_vattr.va_ctime.tv_sec;*/
 1270                 cache_enter(dvp, *vpp, cnp);
 1271         }
 1272         return 0;
 1273 }

Cache object: ce244430573d7bca818102c7b66d5b50


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