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_vfsops.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  * 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  * $FreeBSD$
   33  */
   34 
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/proc.h>
   38 #include <sys/bio.h>
   39 #include <sys/buf.h>
   40 #include <sys/kernel.h>
   41 #include <sys/sysctl.h>
   42 #include <sys/vnode.h>
   43 #include <sys/mount.h>
   44 #include <sys/stat.h>
   45 #include <sys/malloc.h>
   46 #include <sys/module.h>
   47 #include <sys/sx.h>
   48 
   49 
   50 #include <netsmb/smb.h>
   51 #include <netsmb/smb_conn.h>
   52 #include <netsmb/smb_subr.h>
   53 #include <netsmb/smb_dev.h>
   54 
   55 #include <fs/smbfs/smbfs.h>
   56 #include <fs/smbfs/smbfs_node.h>
   57 #include <fs/smbfs/smbfs_subr.h>
   58 
   59 static int smbfs_debuglevel = 0;
   60 
   61 static int smbfs_version = SMBFS_VERSION;
   62 
   63 #ifdef SMBFS_USEZONE
   64 #include <vm/vm.h>
   65 #include <vm/vm_extern.h>
   66 
   67 vm_zone_t smbfsmount_zone;
   68 #endif
   69 
   70 SYSCTL_NODE(_vfs, OID_AUTO, smbfs, CTLFLAG_RW, 0, "SMB/CIFS filesystem");
   71 SYSCTL_INT(_vfs_smbfs, OID_AUTO, version, CTLFLAG_RD, &smbfs_version, 0, "");
   72 SYSCTL_INT(_vfs_smbfs, OID_AUTO, debuglevel, CTLFLAG_RW, &smbfs_debuglevel, 0, "");
   73 
   74 static MALLOC_DEFINE(M_SMBFSHASH, "smbfs_hash", "SMBFS hash table");
   75 
   76 static vfs_init_t       smbfs_init;
   77 static vfs_uninit_t     smbfs_uninit;
   78 static vfs_cmount_t     smbfs_cmount;
   79 static vfs_mount_t      smbfs_mount;
   80 static vfs_root_t       smbfs_root;
   81 static vfs_quotactl_t   smbfs_quotactl;
   82 static vfs_statfs_t     smbfs_statfs;
   83 static vfs_unmount_t    smbfs_unmount;
   84 
   85 static struct vfsops smbfs_vfsops = {
   86         .vfs_init =             smbfs_init,
   87         .vfs_cmount =           smbfs_cmount,
   88         .vfs_mount =            smbfs_mount,
   89         .vfs_quotactl =         smbfs_quotactl,
   90         .vfs_root =             smbfs_root,
   91         .vfs_statfs =           smbfs_statfs,
   92         .vfs_sync =             vfs_stdsync,
   93         .vfs_uninit =           smbfs_uninit,
   94         .vfs_unmount =          smbfs_unmount,
   95 };
   96 
   97 
   98 VFS_SET(smbfs_vfsops, smbfs, VFCF_NETWORK);
   99 
  100 MODULE_DEPEND(smbfs, netsmb, NSMB_VERSION, NSMB_VERSION, NSMB_VERSION);
  101 MODULE_DEPEND(smbfs, libiconv, 1, 1, 2);
  102 MODULE_DEPEND(smbfs, libmchain, 1, 1, 1);
  103 
  104 int smbfs_pbuf_freecnt = -1;    /* start out unlimited */
  105 
  106 static int
  107 smbfs_cmount(struct mntarg *ma, void * data, int flags, struct thread *td)
  108 {
  109         struct smbfs_args args;
  110         int error;
  111 
  112         error = copyin(data, &args, sizeof(struct smbfs_args));
  113         if (error)
  114                 return error;
  115 
  116         if (args.version != SMBFS_VERSION) {
  117                 printf("mount version mismatch: kernel=%d, mount=%d\n",
  118                     SMBFS_VERSION, args.version);
  119                 return EINVAL;
  120         }
  121         ma = mount_argf(ma, "dev", "%d", args.dev);
  122         ma = mount_argb(ma, args.flags & SMBFS_MOUNT_SOFT, "nosoft");
  123         ma = mount_argb(ma, args.flags & SMBFS_MOUNT_INTR, "nointr");
  124         ma = mount_argb(ma, args.flags & SMBFS_MOUNT_STRONG, "nostrong");
  125         ma = mount_argb(ma, args.flags & SMBFS_MOUNT_HAVE_NLS, "nohave_nls");
  126         ma = mount_argb(ma, !(args.flags & SMBFS_MOUNT_NO_LONG), "nolong");
  127         ma = mount_arg(ma, "rootpath", args.root_path, -1);
  128         ma = mount_argf(ma, "uid", "%d", args.uid);
  129         ma = mount_argf(ma, "gid", "%d", args.gid);
  130         ma = mount_argf(ma, "file_mode", "%d", args.file_mode);
  131         ma = mount_argf(ma, "dir_mode", "%d", args.dir_mode);
  132         ma = mount_argf(ma, "caseopt", "%d", args.caseopt);
  133 
  134         error = kernel_mount(ma, flags);
  135 
  136         return (error);
  137 }
  138 
  139 static const char *smbfs_opts[] = {
  140         "dev", "soft", "intr", "strong", "have_nls", "long",
  141         "mountpoint", "rootpath", "uid", "gid", "file_mode", "dir_mode",
  142         "caseopt", "errmsg", NULL
  143 };
  144 
  145 static int
  146 smbfs_mount(struct mount *mp, struct thread *td)
  147 {
  148         struct smbmount *smp = NULL;
  149         struct smb_vc *vcp;
  150         struct smb_share *ssp = NULL;
  151         struct vnode *vp;
  152         struct smb_cred scred;
  153         int error, v;
  154         char *pc, *pe;
  155 
  156         if (mp->mnt_flag & (MNT_UPDATE | MNT_ROOTFS))
  157                 return EOPNOTSUPP;
  158 
  159         if (vfs_filteropt(mp->mnt_optnew, smbfs_opts)) {
  160                 vfs_mount_error(mp, "%s", "Invalid option");
  161                 return (EINVAL);
  162         }
  163 
  164         smb_makescred(&scred, td, td->td_ucred);
  165         if (1 != vfs_scanopt(mp->mnt_optnew, "dev", "%d", &v)) {
  166                 vfs_mount_error(mp, "No dev option");
  167                 return (EINVAL);
  168         }
  169         error = smb_dev2share(v, SMBM_EXEC, &scred, &ssp);
  170         if (error) {
  171                 printf("invalid device handle %d (%d)\n", v, error);
  172                 vfs_mount_error(mp, "invalid device handle %d (%d)\n", v, error);
  173                 return error;
  174         }
  175         vcp = SSTOVC(ssp);
  176         smb_share_unlock(ssp, 0, td);
  177         mp->mnt_stat.f_iosize = SSTOVC(ssp)->vc_txmax;
  178 
  179 #ifdef SMBFS_USEZONE
  180         smp = zalloc(smbfsmount_zone);
  181 #else
  182         MALLOC(smp, struct smbmount*, sizeof(*smp), M_SMBFSDATA,
  183             M_WAITOK|M_USE_RESERVE);
  184 #endif
  185         if (smp == NULL) {
  186                 printf("could not alloc smbmount\n");
  187                 vfs_mount_error(mp, "could not alloc smbmount", v, error);
  188                 error = ENOMEM;
  189                 goto bad;
  190         }
  191         bzero(smp, sizeof(*smp));
  192         mp->mnt_data = (qaddr_t)smp;
  193         smp->sm_hash = hashinit(desiredvnodes, M_SMBFSHASH, &smp->sm_hashlen);
  194         if (smp->sm_hash == NULL)
  195                 goto bad;
  196         sx_init(&smp->sm_hashlock, "smbfsh");
  197         smp->sm_share = ssp;
  198         smp->sm_root = NULL;
  199         if (1 != vfs_scanopt(mp->mnt_optnew,
  200             "caseopt", "%d", &smp->sm_caseopt)) {
  201                 vfs_mount_error(mp, "Invalid caseopt");
  202                 error = EINVAL;
  203                 goto bad;
  204         }
  205         if (1 != vfs_scanopt(mp->mnt_optnew, "uid", "%d", &v)) {
  206                 vfs_mount_error(mp, "Invalid uid");
  207                 error = EINVAL;
  208                 goto bad;
  209         }
  210         smp->sm_uid = v;
  211 
  212         if (1 != vfs_scanopt(mp->mnt_optnew, "gid", "%d", &v)) {
  213                 vfs_mount_error(mp, "Invalid gid");
  214                 error = EINVAL;
  215                 goto bad;
  216         }
  217         smp->sm_gid = v;
  218 
  219         if (1 != vfs_scanopt(mp->mnt_optnew, "file_mode", "%d", &v)) {
  220                 vfs_mount_error(mp, "Invalid file_mode");
  221                 error = EINVAL;
  222                 goto bad;
  223         }
  224         smp->sm_file_mode = (v & (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
  225 
  226         if (1 != vfs_scanopt(mp->mnt_optnew, "dir_mode", "%d", &v)) {
  227                 vfs_mount_error(mp, "Invalid dir_mode");
  228                 error = EINVAL;
  229                 goto bad;
  230         }
  231         smp->sm_dir_mode  = (v & (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
  232 
  233         vfs_flagopt(mp->mnt_optnew,
  234             "nolong", &smp->sm_flags, SMBFS_MOUNT_NO_LONG);
  235 
  236 /*      simple_lock_init(&smp->sm_npslock);*/
  237         pc = mp->mnt_stat.f_mntfromname;
  238         pe = pc + sizeof(mp->mnt_stat.f_mntfromname);
  239         bzero(pc, MNAMELEN);
  240         *pc++ = '/';
  241         *pc++ = '/';
  242         pc=index(strncpy(pc, vcp->vc_username, pe - pc - 2), 0);
  243         if (pc < pe-1) {
  244                 *(pc++) = '@';
  245                 pc = index(strncpy(pc, vcp->vc_srvname, pe - pc - 2), 0);
  246                 if (pc < pe - 1) {
  247                         *(pc++) = '/';
  248                         strncpy(pc, ssp->ss_name, pe - pc - 2);
  249                 }
  250         }
  251         vfs_getnewfsid(mp);
  252         error = smbfs_root(mp, LK_EXCLUSIVE, &vp, td);
  253         if (error) {
  254                 vfs_mount_error(mp, "smbfs_root error: %d", error);
  255                 goto bad;
  256         }
  257         VOP_UNLOCK(vp, 0, td);
  258         SMBVDEBUG("root.v_usecount = %d\n", vrefcnt(vp));
  259 
  260 #ifdef DIAGNOSTICS
  261         SMBERROR("mp=%p\n", mp);
  262 #endif
  263         return error;
  264 bad:
  265         if (smp) {
  266                 if (smp->sm_hash)
  267                         free(smp->sm_hash, M_SMBFSHASH);
  268                 sx_destroy(&smp->sm_hashlock);
  269 #ifdef SMBFS_USEZONE
  270                 zfree(smbfsmount_zone, smp);
  271 #else
  272                 free(smp, M_SMBFSDATA);
  273 #endif
  274         }
  275         if (ssp)
  276                 smb_share_put(ssp, &scred);
  277         return error;
  278 }
  279 
  280 /* Unmount the filesystem described by mp. */
  281 static int
  282 smbfs_unmount(struct mount *mp, int mntflags, struct thread *td)
  283 {
  284         struct smbmount *smp = VFSTOSMBFS(mp);
  285         struct smb_cred scred;
  286         int error, flags;
  287 
  288         SMBVDEBUG("smbfs_unmount: flags=%04x\n", mntflags);
  289         flags = 0;
  290         if (mntflags & MNT_FORCE)
  291                 flags |= FORCECLOSE;
  292         /*
  293          * Keep trying to flush the vnode list for the mount while 
  294          * some are still busy and we are making progress towards
  295          * making them not busy. This is needed because smbfs vnodes
  296          * reference their parent directory but may appear after their
  297          * parent in the list; one pass over the vnode list is not
  298          * sufficient in this case.
  299          */
  300         do {
  301                 smp->sm_didrele = 0;
  302                 /* There is 1 extra root vnode reference from smbfs_mount(). */
  303                 error = vflush(mp, 1, flags, td);
  304         } while (error == EBUSY && smp->sm_didrele != 0);
  305         if (error)
  306                 return error;
  307         smb_makescred(&scred, td, td->td_ucred);
  308         error = smb_share_lock(smp->sm_share, LK_EXCLUSIVE, td);
  309         if (error)
  310                 return error;
  311         smb_share_put(smp->sm_share, &scred);
  312         mp->mnt_data = (qaddr_t)0;
  313 
  314         if (smp->sm_hash)
  315                 free(smp->sm_hash, M_SMBFSHASH);
  316         sx_destroy(&smp->sm_hashlock);
  317 #ifdef SMBFS_USEZONE
  318         zfree(smbfsmount_zone, smp);
  319 #else
  320         free(smp, M_SMBFSDATA);
  321 #endif
  322         MNT_ILOCK(mp);
  323         mp->mnt_flag &= ~MNT_LOCAL;
  324         MNT_IUNLOCK(mp);
  325         return error;
  326 }
  327 
  328 /* 
  329  * Return locked root vnode of a filesystem
  330  */
  331 static int
  332 smbfs_root(struct mount *mp, int flags, struct vnode **vpp, struct thread *td)
  333 {
  334         struct smbmount *smp = VFSTOSMBFS(mp);
  335         struct vnode *vp;
  336         struct smbnode *np;
  337         struct smbfattr fattr;
  338         struct ucred *cred = td->td_ucred;
  339         struct smb_cred scred;
  340         int error;
  341 
  342         if (smp == NULL) {
  343                 SMBERROR("smp == NULL (bug in umount)\n");
  344                 vfs_mount_error(mp, "smp == NULL (bug in umount)");
  345                 return EINVAL;
  346         }
  347         if (smp->sm_root) {
  348                 *vpp = SMBTOV(smp->sm_root);
  349                 return vget(*vpp, LK_EXCLUSIVE | LK_RETRY, td);
  350         }
  351         smb_makescred(&scred, td, cred);
  352         error = smbfs_smb_lookup(NULL, NULL, 0, &fattr, &scred);
  353         if (error)
  354                 return error;
  355         error = smbfs_nget(mp, NULL, "TheRooT", 7, &fattr, &vp);
  356         if (error)
  357                 return error;
  358         ASSERT_VOP_LOCKED(vp, "smbfs_root");
  359         vp->v_vflag |= VV_ROOT;
  360         np = VTOSMB(vp);
  361         smp->sm_root = np;
  362         *vpp = vp;
  363         return 0;
  364 }
  365 
  366 /*
  367  * Do operations associated with quotas, not supported
  368  */
  369 /* ARGSUSED */
  370 static int
  371 smbfs_quotactl(mp, cmd, uid, arg, td)
  372         struct mount *mp;
  373         int cmd;
  374         uid_t uid;
  375         void *arg;
  376         struct thread *td;
  377 {
  378         SMBVDEBUG("return EOPNOTSUPP\n");
  379         return EOPNOTSUPP;
  380 }
  381 
  382 /*ARGSUSED*/
  383 int
  384 smbfs_init(struct vfsconf *vfsp)
  385 {
  386 #ifdef SMBFS_USEZONE
  387         smbfsmount_zone = zinit("SMBFSMOUNT", sizeof(struct smbmount), 0, 0, 1);
  388 #endif
  389         smbfs_pbuf_freecnt = nswbuf / 2 + 1;
  390         SMBVDEBUG("done.\n");
  391         return 0;
  392 }
  393 
  394 /*ARGSUSED*/
  395 int
  396 smbfs_uninit(struct vfsconf *vfsp)
  397 {
  398 
  399         SMBVDEBUG("done.\n");
  400         return 0;
  401 }
  402 
  403 /*
  404  * smbfs_statfs call
  405  */
  406 int
  407 smbfs_statfs(struct mount *mp, struct statfs *sbp, struct thread *td)
  408 {
  409         struct smbmount *smp = VFSTOSMBFS(mp);
  410         struct smbnode *np = smp->sm_root;
  411         struct smb_share *ssp = smp->sm_share;
  412         struct smb_cred scred;
  413         int error = 0;
  414 
  415         if (np == NULL) {
  416                 vfs_mount_error(mp, "np == NULL");
  417                 return EINVAL;
  418         }
  419         
  420         sbp->f_iosize = SSTOVC(ssp)->vc_txmax;          /* optimal transfer block size */
  421         smb_makescred(&scred, td, td->td_ucred);
  422 
  423         if (SMB_DIALECT(SSTOVC(ssp)) >= SMB_DIALECT_LANMAN2_0)
  424                 error = smbfs_smb_statfs2(ssp, sbp, &scred);
  425         else
  426                 error = smbfs_smb_statfs(ssp, sbp, &scred);
  427         if (error)
  428                 return error;
  429         sbp->f_flags = 0;               /* copy of mount exported flags */
  430         return 0;
  431 }

Cache object: 6fbc2acd2dd35b83b7c04f0360ad1281


[ 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.