The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/fs/smbfs/smbfs_vnops.c

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2000-2001 Boris Popov
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 #include <sys/param.h>
   31 #include <sys/systm.h>
   32 #include <sys/namei.h>
   33 #include <sys/kernel.h>
   34 #include <sys/proc.h>
   35 #include <sys/bio.h>
   36 #include <sys/buf.h>
   37 #include <sys/fcntl.h>
   38 #include <sys/mount.h>
   39 #include <sys/unistd.h>
   40 #include <sys/vnode.h>
   41 #include <sys/limits.h>
   42 #include <sys/lockf.h>
   43 #include <sys/stat.h>
   44 
   45 #include <vm/vm.h>
   46 #include <vm/vm_extern.h>
   47 
   48 
   49 #include <netsmb/smb.h>
   50 #include <netsmb/smb_conn.h>
   51 #include <netsmb/smb_subr.h>
   52 
   53 #include <fs/smbfs/smbfs.h>
   54 #include <fs/smbfs/smbfs_node.h>
   55 #include <fs/smbfs/smbfs_subr.h>
   56 
   57 /*
   58  * Prototypes for SMBFS vnode operations
   59  */
   60 static vop_create_t     smbfs_create;
   61 static vop_mknod_t      smbfs_mknod;
   62 static vop_open_t       smbfs_open;
   63 static vop_close_t      smbfs_close;
   64 static vop_access_t     smbfs_access;
   65 static vop_getattr_t    smbfs_getattr;
   66 static vop_setattr_t    smbfs_setattr;
   67 static vop_read_t       smbfs_read;
   68 static vop_write_t      smbfs_write;
   69 static vop_fsync_t      smbfs_fsync;
   70 static vop_remove_t     smbfs_remove;
   71 static vop_link_t       smbfs_link;
   72 static vop_lookup_t     smbfs_lookup;
   73 static vop_rename_t     smbfs_rename;
   74 static vop_mkdir_t      smbfs_mkdir;
   75 static vop_rmdir_t      smbfs_rmdir;
   76 static vop_symlink_t    smbfs_symlink;
   77 static vop_readdir_t    smbfs_readdir;
   78 static vop_strategy_t   smbfs_strategy;
   79 static vop_print_t      smbfs_print;
   80 static vop_pathconf_t   smbfs_pathconf;
   81 static vop_advlock_t    smbfs_advlock;
   82 static vop_getextattr_t smbfs_getextattr;
   83 
   84 struct vop_vector smbfs_vnodeops = {
   85         .vop_default =          &default_vnodeops,
   86 
   87         .vop_access =           smbfs_access,
   88         .vop_advlock =          smbfs_advlock,
   89         .vop_close =            smbfs_close,
   90         .vop_create =           smbfs_create,
   91         .vop_fsync =            smbfs_fsync,
   92         .vop_getattr =          smbfs_getattr,
   93         .vop_getextattr =       smbfs_getextattr,
   94         .vop_getpages =         smbfs_getpages,
   95         .vop_inactive =         smbfs_inactive,
   96         .vop_ioctl =            smbfs_ioctl,
   97         .vop_link =             smbfs_link,
   98         .vop_lookup =           smbfs_lookup,
   99         .vop_mkdir =            smbfs_mkdir,
  100         .vop_mknod =            smbfs_mknod,
  101         .vop_open =             smbfs_open,
  102         .vop_pathconf =         smbfs_pathconf,
  103         .vop_print =            smbfs_print,
  104         .vop_putpages =         smbfs_putpages,
  105         .vop_read =             smbfs_read,
  106         .vop_readdir =          smbfs_readdir,
  107         .vop_reclaim =          smbfs_reclaim,
  108         .vop_remove =           smbfs_remove,
  109         .vop_rename =           smbfs_rename,
  110         .vop_rmdir =            smbfs_rmdir,
  111         .vop_setattr =          smbfs_setattr,
  112 /*      .vop_setextattr =       smbfs_setextattr,*/
  113         .vop_strategy =         smbfs_strategy,
  114         .vop_symlink =          smbfs_symlink,
  115         .vop_write =            smbfs_write,
  116 };
  117 
  118 static int
  119 smbfs_access(ap)
  120         struct vop_access_args /* {
  121                 struct vnode *a_vp;
  122                 accmode_t a_accmode;
  123                 struct ucred *a_cred;
  124                 struct thread *a_td;
  125         } */ *ap;
  126 {
  127         struct vnode *vp = ap->a_vp;
  128         accmode_t accmode = ap->a_accmode;
  129         mode_t mpmode;
  130         struct smbmount *smp = VTOSMBFS(vp);
  131 
  132         SMBVDEBUG("\n");
  133         if ((accmode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) {
  134                 switch (vp->v_type) {
  135                     case VREG: case VDIR: case VLNK:
  136                         return EROFS;
  137                     default:
  138                         break;
  139                 }
  140         }
  141         mpmode = vp->v_type == VREG ? smp->sm_file_mode : smp->sm_dir_mode;
  142         return (vaccess(vp->v_type, mpmode, smp->sm_uid,
  143             smp->sm_gid, ap->a_accmode, ap->a_cred, NULL));
  144 }
  145 
  146 /* ARGSUSED */
  147 static int
  148 smbfs_open(ap)
  149         struct vop_open_args /* {
  150                 struct vnode *a_vp;
  151                 int  a_mode;
  152                 struct ucred *a_cred;
  153                 struct thread *a_td;
  154         } */ *ap;
  155 {
  156         struct vnode *vp = ap->a_vp;
  157         struct smbnode *np = VTOSMB(vp);
  158         struct smb_cred *scred;
  159         struct vattr vattr;
  160         int mode = ap->a_mode;
  161         int error, accmode;
  162 
  163         SMBVDEBUG("%s,%d\n", np->n_name, (np->n_flag & NOPEN) != 0);
  164         if (vp->v_type != VREG && vp->v_type != VDIR) { 
  165                 SMBFSERR("open eacces vtype=%d\n", vp->v_type);
  166                 return EACCES;
  167         }
  168         if (vp->v_type == VDIR) {
  169                 np->n_flag |= NOPEN;
  170                 return 0;
  171         }
  172         if (np->n_flag & NMODIFIED) {
  173                 if ((error = smbfs_vinvalbuf(vp, ap->a_td)) == EINTR)
  174                         return error;
  175                 smbfs_attr_cacheremove(vp);
  176                 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
  177                 if (error)
  178                         return error;
  179                 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
  180         } else {
  181                 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
  182                 if (error)
  183                         return error;
  184                 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) {
  185                         error = smbfs_vinvalbuf(vp, ap->a_td);
  186                         if (error == EINTR)
  187                                 return error;
  188                         np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
  189                 }
  190         }
  191         if ((np->n_flag & NOPEN) != 0)
  192                 return 0;
  193         /*
  194          * Use DENYNONE to give unixy semantics of permitting
  195          * everything not forbidden by permissions.  Ie denial
  196          * is up to server with clients/openers needing to use
  197          * advisory locks for further control.
  198          */
  199         accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD;
  200         if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0)
  201                 accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW;
  202         scred = smbfs_malloc_scred();
  203         smb_makescred(scred, ap->a_td, ap->a_cred);
  204         error = smbfs_smb_open(np, accmode, scred);
  205         if (error) {
  206                 if (mode & FWRITE)
  207                         return EACCES;
  208                 else if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
  209                         accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD;
  210                         error = smbfs_smb_open(np, accmode, scred);
  211                 }
  212         }
  213         if (error == 0) {
  214                 np->n_flag |= NOPEN;
  215                 vnode_create_vobject(ap->a_vp, vattr.va_size, ap->a_td);
  216         }
  217         smbfs_attr_cacheremove(vp);
  218         smbfs_free_scred(scred);
  219         return error;
  220 }
  221 
  222 static int
  223 smbfs_close(ap)
  224         struct vop_close_args /* {
  225                 struct vnodeop_desc *a_desc;
  226                 struct vnode *a_vp;
  227                 int  a_fflag;
  228                 struct ucred *a_cred;
  229                 struct thread *a_td;
  230         } */ *ap;
  231 {
  232         struct vnode *vp = ap->a_vp;
  233         struct thread *td = ap->a_td;
  234         struct smbnode *np = VTOSMB(vp);
  235         struct smb_cred *scred;
  236 
  237         if (vp->v_type == VDIR && (np->n_flag & NOPEN) != 0 &&
  238             np->n_dirseq != NULL) {
  239                 scred = smbfs_malloc_scred();
  240                 smb_makescred(scred, td, ap->a_cred);
  241                 smbfs_findclose(np->n_dirseq, scred);
  242                 smbfs_free_scred(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         scred = smbfs_malloc_scred();
  273         smb_makescred(scred, curthread, ap->a_cred);
  274         oldsize = np->n_size;
  275         error = smbfs_smb_lookup(np, NULL, 0, &fattr, scred);
  276         if (error) {
  277                 SMBVDEBUG("error %d\n", error);
  278                 smbfs_free_scred(scred);
  279                 return error;
  280         }
  281         smbfs_attr_cacheenter(vp, &fattr);
  282         smbfs_attr_cachelookup(vp, va);
  283         if (np->n_flag & NOPEN)
  284                 np->n_size = oldsize;
  285         smbfs_free_scred(scred);
  286         return 0;
  287 }
  288 
  289 static int
  290 smbfs_setattr(ap)
  291         struct vop_setattr_args /* {
  292                 struct vnode *a_vp;
  293                 struct vattr *a_vap;
  294                 struct ucred *a_cred;
  295         } */ *ap;
  296 {
  297         struct vnode *vp = ap->a_vp;
  298         struct smbnode *np = VTOSMB(vp);
  299         struct vattr *vap = ap->a_vap;
  300         struct timespec *mtime, *atime;
  301         struct smb_cred *scred;
  302         struct smb_share *ssp = np->n_mount->sm_share;
  303         struct smb_vc *vcp = SSTOVC(ssp);
  304         struct thread *td = curthread;
  305         u_quad_t tsize = 0;
  306         int isreadonly, doclose, error = 0;
  307         int old_n_dosattr;
  308 
  309         SMBVDEBUG("\n");
  310         isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY);
  311         /*
  312          * Disallow write attempts if the filesystem is mounted read-only.
  313          */
  314         if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 
  315              vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
  316              vap->va_mode != (mode_t)VNOVAL || vap->va_flags != VNOVAL) &&
  317              isreadonly)
  318                 return EROFS;
  319 
  320         /*
  321          * We only support setting four flags.  Don't allow setting others.
  322          *
  323          * We map UF_READONLY to SMB_FA_RDONLY, unlike the MacOS X version
  324          * of this code, which maps both UF_IMMUTABLE AND SF_IMMUTABLE to
  325          * SMB_FA_RDONLY.  The immutable flags have different semantics
  326          * than readonly, which is the reason for the difference.
  327          */
  328         if (vap->va_flags != VNOVAL) {
  329                 if (vap->va_flags & ~(UF_HIDDEN|UF_SYSTEM|UF_ARCHIVE|
  330                                       UF_READONLY))
  331                         return EINVAL;
  332         }
  333 
  334         scred = smbfs_malloc_scred();
  335         smb_makescred(scred, td, ap->a_cred);
  336         if (vap->va_size != VNOVAL) {
  337                 switch (vp->v_type) {
  338                     case VDIR:
  339                         error = EISDIR;
  340                         goto out;
  341                     case VREG:
  342                         break;
  343                     default:
  344                         error = EINVAL;
  345                         goto out;
  346                 }
  347                 if (isreadonly) {
  348                         error = EROFS;
  349                         goto out;
  350                 }
  351                 doclose = 0;
  352                 vnode_pager_setsize(vp, (u_long)vap->va_size);
  353                 tsize = np->n_size;
  354                 np->n_size = vap->va_size;
  355                 if ((np->n_flag & NOPEN) == 0) {
  356                         error = smbfs_smb_open(np,
  357                                                SMB_SM_DENYNONE|SMB_AM_OPENRW,
  358                                                scred);
  359                         if (error == 0)
  360                                 doclose = 1;
  361                 }
  362                 if (error == 0)
  363                         error = smbfs_smb_setfsize(np,
  364                             (int64_t)vap->va_size, scred);
  365                 if (doclose)
  366                         smbfs_smb_close(ssp, np->n_fid, NULL, scred);
  367                 if (error) {
  368                         np->n_size = tsize;
  369                         vnode_pager_setsize(vp, (u_long)tsize);
  370                         goto out;
  371                 }
  372         }
  373         if ((vap->va_flags != VNOVAL) || (vap->va_mode != (mode_t)VNOVAL)) {
  374                 old_n_dosattr = np->n_dosattr;
  375 
  376                 if (vap->va_mode != (mode_t)VNOVAL) {
  377                         if (vap->va_mode & S_IWUSR)
  378                                 np->n_dosattr &= ~SMB_FA_RDONLY;
  379                         else
  380                                 np->n_dosattr |= SMB_FA_RDONLY;
  381                 }
  382 
  383                 if (vap->va_flags != VNOVAL) {
  384                         if (vap->va_flags & UF_HIDDEN)
  385                                 np->n_dosattr |= SMB_FA_HIDDEN;
  386                         else
  387                                 np->n_dosattr &= ~SMB_FA_HIDDEN;
  388 
  389                         if (vap->va_flags & UF_SYSTEM)
  390                                 np->n_dosattr |= SMB_FA_SYSTEM;
  391                         else
  392                                 np->n_dosattr &= ~SMB_FA_SYSTEM;
  393 
  394                         if (vap->va_flags & UF_ARCHIVE)
  395                                 np->n_dosattr |= SMB_FA_ARCHIVE;
  396                         else
  397                                 np->n_dosattr &= ~SMB_FA_ARCHIVE;
  398 
  399                         /*
  400                          * We only support setting the immutable / readonly
  401                          * bit for regular files.  According to comments in
  402                          * the MacOS X version of this code, supporting the
  403                          * readonly bit on directories doesn't do the same
  404                          * thing in Windows as in Unix.
  405                          */
  406                         if (vp->v_type == VREG) {
  407                                 if (vap->va_flags & UF_READONLY)
  408                                         np->n_dosattr |= SMB_FA_RDONLY;
  409                                 else
  410                                         np->n_dosattr &= ~SMB_FA_RDONLY;
  411                         }
  412                 }
  413 
  414                 if (np->n_dosattr != old_n_dosattr) {
  415                         error = smbfs_smb_setpattr(np, np->n_dosattr, NULL, scred);
  416                         if (error)
  417                                 goto out;
  418                 }
  419         }
  420         mtime = atime = NULL;
  421         if (vap->va_mtime.tv_sec != VNOVAL)
  422                 mtime = &vap->va_mtime;
  423         if (vap->va_atime.tv_sec != VNOVAL)
  424                 atime = &vap->va_atime;
  425         if (mtime != atime) {
  426                 if (vap->va_vaflags & VA_UTIMES_NULL) {
  427                         error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td);
  428                         if (error)
  429                                 error = VOP_ACCESS(vp, VWRITE, ap->a_cred, td);
  430                 } else
  431                         error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td);
  432 #if 0
  433                 if (mtime == NULL)
  434                         mtime = &np->n_mtime;
  435                 if (atime == NULL)
  436                         atime = &np->n_atime;
  437 #endif
  438                 /*
  439                  * If file is opened, then we can use handle based calls.
  440                  * If not, use path based ones.
  441                  */
  442                 if ((np->n_flag & NOPEN) == 0) {
  443                         if (vcp->vc_flags & SMBV_WIN95) {
  444                                 error = VOP_OPEN(vp, FWRITE, ap->a_cred, td,
  445                                     NULL);
  446                                 if (!error) {
  447 /*                                      error = smbfs_smb_setfattrNT(np, 0,
  448                                             mtime, atime, scred);
  449                                         VOP_GETATTR(vp, &vattr, ap->a_cred); */
  450                                         if (mtime)
  451                                                 np->n_mtime = *mtime;
  452                                         VOP_CLOSE(vp, FWRITE, ap->a_cred, td);
  453                                 }
  454                         } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) {
  455                                 error = smbfs_smb_setptime2(np, mtime, atime, 0, scred);
  456 /*                              error = smbfs_smb_setpattrNT(np, 0, mtime, atime, scred);*/
  457                         } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) {
  458                                 error = smbfs_smb_setptime2(np, mtime, atime, 0, scred);
  459                         } else {
  460                                 error = smbfs_smb_setpattr(np, 0, mtime, scred);
  461                         }
  462                 } else {
  463                         if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) {
  464                                 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, scred);
  465                         } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) {
  466                                 error = smbfs_smb_setftime(np, mtime, atime, scred);
  467                         } else {
  468                                 /*
  469                                  * I have no idea how to handle this for core
  470                                  * level servers. The possible solution is to
  471                                  * update mtime after file is closed.
  472                                  */
  473                                  SMBERROR("can't update times on an opened file\n");
  474                         }
  475                 }
  476         }
  477         /*
  478          * Invalidate attribute cache in case if server doesn't set
  479          * required attributes.
  480          */
  481         smbfs_attr_cacheremove(vp);     /* invalidate cache */
  482         VOP_GETATTR(vp, vap, ap->a_cred);
  483         np->n_mtime.tv_sec = vap->va_mtime.tv_sec;
  484 out:
  485         smbfs_free_scred(scred);
  486         return error;
  487 }
  488 /*
  489  * smbfs_read call.
  490  */
  491 static int
  492 smbfs_read(ap)
  493         struct vop_read_args /* {
  494                 struct vnode *a_vp;
  495                 struct uio *a_uio;
  496                 int  a_ioflag;
  497                 struct ucred *a_cred;
  498         } */ *ap;
  499 {
  500         struct vnode *vp = ap->a_vp;
  501         struct uio *uio = ap->a_uio;
  502 
  503         SMBVDEBUG("\n");
  504         if (vp->v_type != VREG && vp->v_type != VDIR)
  505                 return EPERM;
  506         return smbfs_readvnode(vp, uio, ap->a_cred);
  507 }
  508 
  509 static int
  510 smbfs_write(ap)
  511         struct vop_write_args /* {
  512                 struct vnode *a_vp;
  513                 struct uio *a_uio;
  514                 int  a_ioflag;
  515                 struct ucred *a_cred;
  516         } */ *ap;
  517 {
  518         struct vnode *vp = ap->a_vp;
  519         struct uio *uio = ap->a_uio;
  520 
  521         SMBVDEBUG("%d,ofs=%jd,sz=%zd\n",vp->v_type, (intmax_t)uio->uio_offset, 
  522             uio->uio_resid);
  523         if (vp->v_type != VREG)
  524                 return (EPERM);
  525         return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag);
  526 }
  527 /*
  528  * smbfs_create call
  529  * Create a regular file. On entry the directory to contain the file being
  530  * created is locked.  We must release before we return. We must also free
  531  * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or
  532  * only if the SAVESTART bit in cn_flags is clear on success.
  533  */
  534 static int
  535 smbfs_create(ap)
  536         struct vop_create_args /* {
  537                 struct vnode *a_dvp;
  538                 struct vnode **a_vpp;
  539                 struct componentname *a_cnp;
  540                 struct vattr *a_vap;
  541         } */ *ap;
  542 {
  543         struct vnode *dvp = ap->a_dvp;
  544         struct vattr *vap = ap->a_vap;
  545         struct vnode **vpp=ap->a_vpp;
  546         struct componentname *cnp = ap->a_cnp;
  547         struct smbnode *dnp = VTOSMB(dvp);
  548         struct vnode *vp;
  549         struct vattr vattr;
  550         struct smbfattr fattr;
  551         struct smb_cred *scred;
  552         char *name = cnp->cn_nameptr;
  553         int nmlen = cnp->cn_namelen;
  554         int error;
  555         
  556 
  557         SMBVDEBUG("\n");
  558         *vpp = NULL;
  559         if (vap->va_type != VREG)
  560                 return EOPNOTSUPP;
  561         if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
  562                 return error;
  563         scred = smbfs_malloc_scred();
  564         smb_makescred(scred, cnp->cn_thread, cnp->cn_cred);
  565         
  566         error = smbfs_smb_create(dnp, name, nmlen, scred);
  567         if (error)
  568                 goto out;
  569         error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, scred);
  570         if (error)
  571                 goto out;
  572         error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp);
  573         if (error)
  574                 goto out;
  575         *vpp = vp;
  576         if (cnp->cn_flags & MAKEENTRY)
  577                 cache_enter(dvp, vp, cnp);
  578 out:
  579         smbfs_free_scred(scred);
  580         return error;
  581 }
  582 
  583 static int
  584 smbfs_remove(ap)
  585         struct vop_remove_args /* {
  586                 struct vnodeop_desc *a_desc;
  587                 struct vnode * a_dvp;
  588                 struct vnode * a_vp;
  589                 struct componentname * a_cnp;
  590         } */ *ap;
  591 {
  592         struct vnode *vp = ap->a_vp;
  593 /*      struct vnode *dvp = ap->a_dvp;*/
  594         struct componentname *cnp = ap->a_cnp;
  595         struct smbnode *np = VTOSMB(vp);
  596         struct smb_cred *scred;
  597         int error;
  598 
  599         if (vp->v_type == VDIR || (np->n_flag & NOPEN) != 0 || vrefcnt(vp) != 1)
  600                 return EPERM;
  601         scred = smbfs_malloc_scred();
  602         smb_makescred(scred, cnp->cn_thread, cnp->cn_cred);
  603         error = smbfs_smb_delete(np, scred);
  604         if (error == 0)
  605                 np->n_flag |= NGONE;
  606         cache_purge(vp);
  607         smbfs_free_scred(scred);
  608         return error;
  609 }
  610 
  611 /*
  612  * smbfs_file rename call
  613  */
  614 static int
  615 smbfs_rename(ap)
  616         struct vop_rename_args  /* {
  617                 struct vnode *a_fdvp;
  618                 struct vnode *a_fvp;
  619                 struct componentname *a_fcnp;
  620                 struct vnode *a_tdvp;
  621                 struct vnode *a_tvp;
  622                 struct componentname *a_tcnp;
  623         } */ *ap;
  624 {
  625         struct vnode *fvp = ap->a_fvp;
  626         struct vnode *tvp = ap->a_tvp;
  627         struct vnode *fdvp = ap->a_fdvp;
  628         struct vnode *tdvp = ap->a_tdvp;
  629         struct componentname *tcnp = ap->a_tcnp;
  630 /*      struct componentname *fcnp = ap->a_fcnp;*/
  631         struct smb_cred *scred;
  632         u_int16_t flags = 6;
  633         int error=0;
  634 
  635         scred = NULL;
  636         /* Check for cross-device rename */
  637         if ((fvp->v_mount != tdvp->v_mount) ||
  638             (tvp && (fvp->v_mount != tvp->v_mount))) {
  639                 error = EXDEV;
  640                 goto out;
  641         }
  642 
  643         if (tvp && vrefcnt(tvp) > 1) {
  644                 error = EBUSY;
  645                 goto out;
  646         }
  647         flags = 0x10;                   /* verify all writes */
  648         if (fvp->v_type == VDIR) {
  649                 flags |= 2;
  650         } else if (fvp->v_type == VREG) {
  651                 flags |= 1;
  652         } else {
  653                 return EINVAL;
  654         }
  655         scred = smbfs_malloc_scred();
  656         smb_makescred(scred, tcnp->cn_thread, tcnp->cn_cred);
  657         /*
  658          * It seems that Samba doesn't implement SMB_COM_MOVE call...
  659          */
  660 #ifdef notnow
  661         if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) {
  662                 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp),
  663                     tcnp->cn_nameptr, tcnp->cn_namelen, flags, scred);
  664         } else
  665 #endif
  666         {
  667                 /*
  668                  * We have to do the work atomicaly
  669                  */
  670                 if (tvp && tvp != fvp) {
  671                         error = smbfs_smb_delete(VTOSMB(tvp), scred);
  672                         if (error)
  673                                 goto out_cacherem;
  674                         VTOSMB(fvp)->n_flag |= NGONE;
  675                 }
  676                 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp),
  677                     tcnp->cn_nameptr, tcnp->cn_namelen, scred);
  678         }
  679 
  680         if (fvp->v_type == VDIR) {
  681                 if (tvp != NULL && tvp->v_type == VDIR)
  682                         cache_purge(tdvp);
  683                 cache_purge(fdvp);
  684         }
  685 
  686 out_cacherem:
  687         smbfs_attr_cacheremove(fdvp);
  688         smbfs_attr_cacheremove(tdvp);
  689 out:
  690         smbfs_free_scred(scred);
  691         if (tdvp == tvp)
  692                 vrele(tdvp);
  693         else
  694                 vput(tdvp);
  695         if (tvp)
  696                 vput(tvp);
  697         vrele(fdvp);
  698         vrele(fvp);
  699 #ifdef possible_mistake
  700         vgone(fvp);
  701         if (tvp)
  702                 vgone(tvp);
  703 #endif
  704         return error;
  705 }
  706 
  707 /*
  708  * somtime it will come true...
  709  */
  710 static int
  711 smbfs_link(ap)
  712         struct vop_link_args /* {
  713                 struct vnode *a_tdvp;
  714                 struct vnode *a_vp;
  715                 struct componentname *a_cnp;
  716         } */ *ap;
  717 {
  718         return EOPNOTSUPP;
  719 }
  720 
  721 /*
  722  * smbfs_symlink link create call.
  723  * Sometime it will be functional...
  724  */
  725 static int
  726 smbfs_symlink(ap)
  727         struct vop_symlink_args /* {
  728                 struct vnode *a_dvp;
  729                 struct vnode **a_vpp;
  730                 struct componentname *a_cnp;
  731                 struct vattr *a_vap;
  732                 char *a_target;
  733         } */ *ap;
  734 {
  735         return EOPNOTSUPP;
  736 }
  737 
  738 static int
  739 smbfs_mknod(ap) 
  740         struct vop_mknod_args /* {
  741         } */ *ap;
  742 {
  743         return EOPNOTSUPP;
  744 }
  745 
  746 static int
  747 smbfs_mkdir(ap)
  748         struct vop_mkdir_args /* {
  749                 struct vnode *a_dvp;
  750                 struct vnode **a_vpp;
  751                 struct componentname *a_cnp;
  752                 struct vattr *a_vap;
  753         } */ *ap;
  754 {
  755         struct vnode *dvp = ap->a_dvp;
  756 /*      struct vattr *vap = ap->a_vap;*/
  757         struct vnode *vp;
  758         struct componentname *cnp = ap->a_cnp;
  759         struct smbnode *dnp = VTOSMB(dvp);
  760         struct vattr vattr;
  761         struct smb_cred *scred;
  762         struct smbfattr fattr;
  763         char *name = cnp->cn_nameptr;
  764         int len = cnp->cn_namelen;
  765         int error;
  766 
  767         if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred))) {
  768                 return error;
  769         }       
  770         if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.'))))
  771                 return EEXIST;
  772         scred = smbfs_malloc_scred();
  773         smb_makescred(scred, cnp->cn_thread, cnp->cn_cred);
  774         error = smbfs_smb_mkdir(dnp, name, len, scred);
  775         if (error)
  776                 goto out;
  777         error = smbfs_smb_lookup(dnp, name, len, &fattr, scred);
  778         if (error)
  779                 goto out;
  780         error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp);
  781         if (error)
  782                 goto out;
  783         *ap->a_vpp = vp;
  784 out:
  785         smbfs_free_scred(scred);
  786         return error;
  787 }
  788 
  789 /*
  790  * smbfs_remove directory call
  791  */
  792 static int
  793 smbfs_rmdir(ap)
  794         struct vop_rmdir_args /* {
  795                 struct vnode *a_dvp;
  796                 struct vnode *a_vp;
  797                 struct componentname *a_cnp;
  798         } */ *ap;
  799 {
  800         struct vnode *vp = ap->a_vp;
  801         struct vnode *dvp = ap->a_dvp;
  802         struct componentname *cnp = ap->a_cnp;
  803 /*      struct smbmount *smp = VTOSMBFS(vp);*/
  804         struct smbnode *dnp = VTOSMB(dvp);
  805         struct smbnode *np = VTOSMB(vp);
  806         struct smb_cred *scred;
  807         int error;
  808 
  809         if (dvp == vp)
  810                 return EINVAL;
  811 
  812         scred = smbfs_malloc_scred();
  813         smb_makescred(scred, cnp->cn_thread, cnp->cn_cred);
  814         error = smbfs_smb_rmdir(np, scred);
  815         if (error == 0)
  816                 np->n_flag |= NGONE;
  817         dnp->n_flag |= NMODIFIED;
  818         smbfs_attr_cacheremove(dvp);
  819 /*      cache_purge(dvp);*/
  820         cache_purge(vp);
  821         smbfs_free_scred(scred);
  822         return error;
  823 }
  824 
  825 /*
  826  * smbfs_readdir call
  827  */
  828 static int
  829 smbfs_readdir(ap)
  830         struct vop_readdir_args /* {
  831                 struct vnode *a_vp;
  832                 struct uio *a_uio;
  833                 struct ucred *a_cred;
  834                 int *a_eofflag;
  835                 u_long *a_cookies;
  836                 int a_ncookies;
  837         } */ *ap;
  838 {
  839         struct vnode *vp = ap->a_vp;
  840         struct uio *uio = ap->a_uio;
  841         int error;
  842 
  843         if (vp->v_type != VDIR)
  844                 return (EPERM);
  845 #ifdef notnow
  846         if (ap->a_ncookies) {
  847                 printf("smbfs_readdir: no support for cookies now...");
  848                 return (EOPNOTSUPP);
  849         }
  850 #endif
  851         error = smbfs_readvnode(vp, uio, ap->a_cred);
  852         return error;
  853 }
  854 
  855 /* ARGSUSED */
  856 static int
  857 smbfs_fsync(ap)
  858         struct vop_fsync_args /* {
  859                 struct vnodeop_desc *a_desc;
  860                 struct vnode * a_vp;
  861                 struct ucred * a_cred;
  862                 int  a_waitfor;
  863                 struct thread * a_td;
  864         } */ *ap;
  865 {
  866 /*      return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));*/
  867     return (0);
  868 }
  869 
  870 static 
  871 int smbfs_print (ap) 
  872         struct vop_print_args /* {
  873         struct vnode *a_vp;
  874         } */ *ap;
  875 {
  876         struct vnode *vp = ap->a_vp;
  877         struct smbnode *np = VTOSMB(vp);
  878 
  879         if (np == NULL) {
  880                 printf("no smbnode data\n");
  881                 return (0);
  882         }
  883         printf("\tname = %s, parent = %p, open = %d\n", np->n_name,
  884             np->n_parent ? np->n_parent : NULL, (np->n_flag & NOPEN) != 0);
  885         return (0);
  886 }
  887 
  888 static int
  889 smbfs_pathconf (ap)
  890         struct vop_pathconf_args  /* {
  891         struct vnode *vp;
  892         int name;
  893         register_t *retval;
  894         } */ *ap;
  895 {
  896         struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp));
  897         struct smb_vc *vcp = SSTOVC(smp->sm_share);
  898         long *retval = ap->a_retval;
  899         int error = 0;
  900         
  901         switch (ap->a_name) {
  902             case _PC_FILESIZEBITS:
  903                 if (vcp->vc_sopt.sv_caps & (SMB_CAP_LARGE_READX |
  904                     SMB_CAP_LARGE_WRITEX))
  905                     *retval = 64;
  906                 else
  907                     *retval = 32;
  908                 break;
  909             case _PC_NAME_MAX:
  910                 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12;
  911                 break;
  912             case _PC_PATH_MAX:
  913                 *retval = 800;  /* XXX: a correct one ? */
  914                 break;
  915             case _PC_NO_TRUNC:
  916                 *retval = 1;
  917                 break;
  918             default:
  919                 error = vop_stdpathconf(ap);
  920         }
  921         return error;
  922 }
  923 
  924 static int
  925 smbfs_strategy (ap) 
  926         struct vop_strategy_args /* {
  927         struct buf *a_bp
  928         } */ *ap;
  929 {
  930         struct buf *bp=ap->a_bp;
  931         struct ucred *cr;
  932         struct thread *td;
  933 
  934         SMBVDEBUG("\n");
  935         if (bp->b_flags & B_ASYNC)
  936                 td = (struct thread *)0;
  937         else
  938                 td = curthread; /* XXX */
  939         if (bp->b_iocmd == BIO_READ)
  940                 cr = bp->b_rcred;
  941         else
  942                 cr = bp->b_wcred;
  943 
  944         if ((bp->b_flags & B_ASYNC) == 0 )
  945                 (void)smbfs_doio(ap->a_vp, bp, cr, td);
  946         return (0);
  947 }
  948 
  949 int
  950 smbfs_ioctl(ap)
  951         struct vop_ioctl_args /* {
  952                 struct vnode *a_vp;
  953                 u_long a_command;
  954                 caddr_t a_data;
  955                 int fflag;
  956                 struct ucred *cred;
  957                 struct thread *td;
  958         } */ *ap;
  959 {
  960         return ENOTTY;
  961 }
  962 
  963 static char smbfs_atl[] = "rhsvda";
  964 static int
  965 smbfs_getextattr(struct vop_getextattr_args *ap)
  966 /* {
  967         IN struct vnode *a_vp;
  968         IN char *a_name;
  969         INOUT struct uio *a_uio;
  970         IN struct ucred *a_cred;
  971         IN struct thread *a_td;
  972 };
  973 */
  974 {
  975         struct vnode *vp = ap->a_vp;
  976         struct thread *td = ap->a_td;
  977         struct ucred *cred = ap->a_cred;
  978         struct uio *uio = ap->a_uio;
  979         const char *name = ap->a_name;
  980         struct smbnode *np = VTOSMB(vp);
  981         struct vattr vattr;
  982         char buf[10];
  983         int i, attr, error;
  984 
  985         error = VOP_ACCESS(vp, VREAD, cred, td);
  986         if (error)
  987                 return error;
  988         error = VOP_GETATTR(vp, &vattr, cred);
  989         if (error)
  990                 return error;
  991         if (strcmp(name, "dosattr") == 0) {
  992                 attr = np->n_dosattr;
  993                 for (i = 0; i < 6; i++, attr >>= 1)
  994                         buf[i] = (attr & 1) ? smbfs_atl[i] : '-';
  995                 buf[i] = 0;
  996                 error = uiomove(buf, i, uio);
  997                 
  998         } else
  999                 error = EINVAL;
 1000         return error;
 1001 }
 1002 
 1003 /*
 1004  * Since we expected to support F_GETLK (and SMB protocol has no such function),
 1005  * it is necessary to use lf_advlock(). It would be nice if this function had
 1006  * a callback mechanism because it will help to improve a level of consistency.
 1007  */
 1008 int
 1009 smbfs_advlock(ap)
 1010         struct vop_advlock_args /* {
 1011                 struct vnode *a_vp;
 1012                 caddr_t  a_id;
 1013                 int  a_op;
 1014                 struct flock *a_fl;
 1015                 int  a_flags;
 1016         } */ *ap;
 1017 {
 1018         struct vnode *vp = ap->a_vp;
 1019         struct smbnode *np = VTOSMB(vp);
 1020         struct flock *fl = ap->a_fl;
 1021         caddr_t id = (caddr_t)1 /* ap->a_id */;
 1022 /*      int flags = ap->a_flags;*/
 1023         struct thread *td = curthread;
 1024         struct smb_cred *scred;
 1025         u_quad_t size;
 1026         off_t start, end, oadd;
 1027         int error, lkop;
 1028 
 1029         if (vp->v_type == VDIR) {
 1030                 /*
 1031                  * SMB protocol have no support for directory locking.
 1032                  * Although locks can be processed on local machine, I don't
 1033                  * think that this is a good idea, because some programs
 1034                  * can work wrong assuming directory is locked. So, we just
 1035                  * return 'operation not supported
 1036                  */
 1037                  return EOPNOTSUPP;
 1038         }
 1039         size = np->n_size;
 1040         switch (fl->l_whence) {
 1041 
 1042         case SEEK_SET:
 1043         case SEEK_CUR:
 1044                 start = fl->l_start;
 1045                 break;
 1046 
 1047         case SEEK_END:
 1048                 if (size > OFF_MAX ||
 1049                     (fl->l_start > 0 && size > OFF_MAX - fl->l_start))
 1050                         return EOVERFLOW;
 1051                 start = size + fl->l_start;
 1052                 break;
 1053 
 1054         default:
 1055                 return EINVAL;
 1056         }
 1057         if (start < 0)
 1058                 return EINVAL;
 1059         if (fl->l_len < 0) {
 1060                 if (start == 0)
 1061                         return EINVAL;
 1062                 end = start - 1;
 1063                 start += fl->l_len;
 1064                 if (start < 0)
 1065                         return EINVAL;
 1066         } else if (fl->l_len == 0)
 1067                 end = -1;
 1068         else {
 1069                 oadd = fl->l_len - 1;
 1070                 if (oadd > OFF_MAX - start)
 1071                         return EOVERFLOW;
 1072                 end = start + oadd;
 1073         }
 1074         scred = smbfs_malloc_scred();
 1075         smb_makescred(scred, td, td->td_ucred);
 1076         switch (ap->a_op) {
 1077             case F_SETLK:
 1078                 switch (fl->l_type) {
 1079                     case F_WRLCK:
 1080                         lkop = SMB_LOCK_EXCL;
 1081                         break;
 1082                     case F_RDLCK:
 1083                         lkop = SMB_LOCK_SHARED;
 1084                         break;
 1085                     case F_UNLCK:
 1086                         lkop = SMB_LOCK_RELEASE;
 1087                         break;
 1088                     default:
 1089                         smbfs_free_scred(scred);
 1090                         return EINVAL;
 1091                 }
 1092                 error = lf_advlock(ap, &vp->v_lockf, size);
 1093                 if (error)
 1094                         break;
 1095                 lkop = SMB_LOCK_EXCL;
 1096                 error = smbfs_smb_lock(np, lkop, id, start, end, scred);
 1097                 if (error) {
 1098                         int oldtype = fl->l_type;
 1099                         fl->l_type = F_UNLCK;
 1100                         ap->a_op = F_UNLCK;
 1101                         lf_advlock(ap, &vp->v_lockf, size);
 1102                         fl->l_type = oldtype;
 1103                 }
 1104                 break;
 1105             case F_UNLCK:
 1106                 lf_advlock(ap, &vp->v_lockf, size);
 1107                 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, scred);
 1108                 break;
 1109             case F_GETLK:
 1110                 error = lf_advlock(ap, &vp->v_lockf, size);
 1111                 break;
 1112             default:
 1113                 smbfs_free_scred(scred);
 1114                 return EINVAL;
 1115         }
 1116         smbfs_free_scred(scred);
 1117         return error;
 1118 }
 1119 
 1120 static int
 1121 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop)
 1122 {
 1123         static const char *badchars = "*/:<>?";
 1124         static const char *badchars83 = " +|,[]=;";
 1125         const char *cp;
 1126         int i, error;
 1127 
 1128         /*
 1129          * Backslash characters, being a path delimiter, are prohibited
 1130          * within a path component even for LOOKUP operations.
 1131          */
 1132         if (strchr(name, '\\') != NULL)
 1133                 return ENOENT;
 1134 
 1135         if (nameiop == LOOKUP)
 1136                 return 0;
 1137         error = ENOENT;
 1138         if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) {
 1139                 /*
 1140                  * Name should conform 8.3 format
 1141                  */
 1142                 if (nmlen > 12)
 1143                         return ENAMETOOLONG;
 1144                 cp = strchr(name, '.');
 1145                 if (cp == NULL)
 1146                         return error;
 1147                 if (cp == name || (cp - name) > 8)
 1148                         return error;
 1149                 cp = strchr(cp + 1, '.');
 1150                 if (cp != NULL)
 1151                         return error;
 1152                 for (cp = name, i = 0; i < nmlen; i++, cp++)
 1153                         if (strchr(badchars83, *cp) != NULL)
 1154                                 return error;
 1155         }
 1156         for (cp = name, i = 0; i < nmlen; i++, cp++)
 1157                 if (strchr(badchars, *cp) != NULL)
 1158                         return error;
 1159         return 0;
 1160 }
 1161 
 1162 /*
 1163  * Things go even weird without fixed inode numbers...
 1164  */
 1165 int
 1166 smbfs_lookup(ap)
 1167         struct vop_lookup_args /* {
 1168                 struct vnodeop_desc *a_desc;
 1169                 struct vnode *a_dvp;
 1170                 struct vnode **a_vpp;
 1171                 struct componentname *a_cnp;
 1172         } */ *ap;
 1173 {
 1174         struct componentname *cnp = ap->a_cnp;
 1175         struct thread *td = cnp->cn_thread;
 1176         struct vnode *dvp = ap->a_dvp;
 1177         struct vnode **vpp = ap->a_vpp;
 1178         struct vnode *vp;
 1179         struct smbmount *smp;
 1180         struct mount *mp = dvp->v_mount;
 1181         struct smbnode *dnp;
 1182         struct smbfattr fattr, *fap;
 1183         struct smb_cred *scred;
 1184         char *name = cnp->cn_nameptr;
 1185         int flags = cnp->cn_flags;
 1186         int nameiop = cnp->cn_nameiop;
 1187         int nmlen = cnp->cn_namelen;
 1188         int error, islastcn, isdot;
 1189         int killit;
 1190         
 1191         SMBVDEBUG("\n");
 1192         if (dvp->v_type != VDIR)
 1193                 return ENOTDIR;
 1194         if ((flags & ISDOTDOT) && (dvp->v_vflag & VV_ROOT)) {
 1195                 SMBFSERR("invalid '..'\n");
 1196                 return EIO;
 1197         }
 1198         islastcn = flags & ISLASTCN;
 1199         if (islastcn && (mp->mnt_flag & MNT_RDONLY) && (nameiop != LOOKUP))
 1200                 return EROFS;
 1201         error = vn_dir_check_exec(dvp, cnp);
 1202         if (error != 0)
 1203                 return error;
 1204         smp = VFSTOSMBFS(mp);
 1205         dnp = VTOSMB(dvp);
 1206         isdot = (nmlen == 1 && name[0] == '.');
 1207 
 1208         error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop);
 1209 
 1210         if (error) 
 1211                 return ENOENT;
 1212 
 1213         error = cache_lookup(dvp, vpp, cnp, NULL, NULL);
 1214         SMBVDEBUG("cache_lookup returned %d\n", error);
 1215         if (error > 0)
 1216                 return error;
 1217         if (error) {            /* name was found */
 1218                 struct vattr vattr;
 1219 
 1220                 killit = 0;
 1221                 vp = *vpp;
 1222                 error = VOP_GETATTR(vp, &vattr, cnp->cn_cred);
 1223                 /*
 1224                  * If the file type on the server is inconsistent
 1225                  * with what it was when we created the vnode,
 1226                  * kill the bogus vnode now and fall through to
 1227                  * the code below to create a new one with the
 1228                  * right type.
 1229                  */
 1230                 if (error == 0 &&
 1231                    ((vp->v_type == VDIR &&
 1232                    (VTOSMB(vp)->n_dosattr & SMB_FA_DIR) == 0) ||
 1233                    (vp->v_type == VREG &&
 1234                    (VTOSMB(vp)->n_dosattr & SMB_FA_DIR) != 0)))
 1235                    killit = 1;
 1236                 else if (error == 0
 1237              /*    && vattr.va_ctime.tv_sec == VTOSMB(vp)->n_ctime*/) {
 1238                      if (nameiop != LOOKUP && islastcn)
 1239                              cnp->cn_flags |= SAVENAME;
 1240                      SMBVDEBUG("use cached vnode\n");
 1241                      return (0);
 1242                 }
 1243                 cache_purge(vp);
 1244                 /*
 1245                  * XXX This is not quite right, if '.' is
 1246                  * inconsistent, we really need to start the lookup
 1247                  * all over again.  Hopefully there is some other
 1248                  * guarantee that prevents this case from happening.
 1249                  */
 1250                 if (killit && vp != dvp)
 1251                         vgone(vp);
 1252                 if (vp != dvp)
 1253                         vput(vp);
 1254                 else
 1255                         vrele(vp);
 1256                 *vpp = NULLVP;
 1257         }
 1258         /* 
 1259          * entry is not in the cache or has been expired
 1260          */
 1261         error = 0;
 1262         *vpp = NULLVP;
 1263         scred = smbfs_malloc_scred();
 1264         smb_makescred(scred, td, cnp->cn_cred);
 1265         fap = &fattr;
 1266         if (flags & ISDOTDOT) {
 1267                 /*
 1268                  * In the DOTDOT case, don't go over-the-wire
 1269                  * in order to request attributes. We already
 1270                  * know it's a directory and subsequent call to
 1271                  * smbfs_getattr() will restore consistency.
 1272                  *
 1273                  */
 1274                 SMBVDEBUG("smbfs_smb_lookup: dotdot\n");
 1275         } else if (isdot) {
 1276                 error = smbfs_smb_lookup(dnp, NULL, 0, fap, scred);
 1277                 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error);
 1278         }
 1279         else {
 1280                 error = smbfs_smb_lookup(dnp, name, nmlen, fap, scred);
 1281                 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error);
 1282         }
 1283         if (error && error != ENOENT)
 1284                 goto out;
 1285         if (error) {                    /* entry not found */
 1286                 /*
 1287                  * Handle RENAME or CREATE case...
 1288                  */
 1289                 if ((nameiop == CREATE || nameiop == RENAME) && islastcn) {
 1290                         error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
 1291                         if (error)
 1292                                 goto out;
 1293                         cnp->cn_flags |= SAVENAME;
 1294                         error = EJUSTRETURN;
 1295                         goto out;
 1296                 }
 1297                 error = ENOENT;
 1298                 goto out;
 1299         }/* else {
 1300                 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum);
 1301         }*/
 1302         /*
 1303          * handle DELETE case ...
 1304          */
 1305         if (nameiop == DELETE && islastcn) {    /* delete last component */
 1306                 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
 1307                 if (error)
 1308                         goto out;
 1309                 if (isdot) {
 1310                         VREF(dvp);
 1311                         *vpp = dvp;
 1312                         goto out;
 1313                 }
 1314                 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
 1315                 if (error)
 1316                         goto out;
 1317                 *vpp = vp;
 1318                 cnp->cn_flags |= SAVENAME;
 1319                 goto out;
 1320         }
 1321         if (nameiop == RENAME && islastcn) {
 1322                 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
 1323                 if (error)
 1324                         goto out;
 1325                 if (isdot) {
 1326                         error = EISDIR;
 1327                         goto out;
 1328                 }
 1329                 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
 1330                 if (error)
 1331                         goto out;
 1332                 *vpp = vp;
 1333                 cnp->cn_flags |= SAVENAME;
 1334                 goto out;
 1335         }
 1336         if (flags & ISDOTDOT) {
 1337                 mp = dvp->v_mount;
 1338                 error = vfs_busy(mp, MBF_NOWAIT);
 1339                 if (error != 0) {
 1340                         vfs_ref(mp);
 1341                         VOP_UNLOCK(dvp, 0);
 1342                         error = vfs_busy(mp, 0);
 1343                         vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
 1344                         vfs_rel(mp);
 1345                         if (error) {
 1346                                 error = ENOENT;
 1347                                 goto out;
 1348                         }
 1349                         if ((dvp->v_iflag & VI_DOOMED) != 0) {
 1350                                 vfs_unbusy(mp);
 1351                                 error = ENOENT;
 1352                                 goto out;
 1353                         }
 1354                 }       
 1355                 VOP_UNLOCK(dvp, 0);
 1356                 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp);
 1357                 vfs_unbusy(mp);
 1358                 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
 1359                 if ((dvp->v_iflag & VI_DOOMED) != 0) {
 1360                         if (error == 0)
 1361                                 vput(vp);
 1362                         error = ENOENT;
 1363                 }
 1364                 if (error)
 1365                         goto out;
 1366                 *vpp = vp;
 1367         } else if (isdot) {
 1368                 vref(dvp);
 1369                 *vpp = dvp;
 1370         } else {
 1371                 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
 1372                 if (error)
 1373                         goto out;
 1374                 *vpp = vp;
 1375                 SMBVDEBUG("lookup: getnewvp!\n");
 1376         }
 1377         if ((cnp->cn_flags & MAKEENTRY)/* && !islastcn*/) {
 1378 /*              VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_vattr.va_ctime.tv_sec;*/
 1379                 cache_enter(dvp, *vpp, cnp);
 1380         }
 1381 out:
 1382         smbfs_free_scred(scred);
 1383         return (error);
 1384 }

Cache object: a41bedcf8ee1ff66e478f867b427cc4a


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.