Beispiel #1
0
static int
nsmb_close2(smb_dev_t *sdp, cred_t *cr)
{
	struct smb_vc *vcp;
	struct smb_share *ssp;
	struct smb_cred scred;

	smb_credinit(&scred, cr);
	ssp = sdp->sd_share;
	if (ssp != NULL)
		smb_share_rele(ssp);
	vcp = sdp->sd_vc;
	if (vcp != NULL) {
		/*
		 * If this dev minor was opened by smbiod,
		 * mark this VC as "dead" because it now
		 * will have no IOD to service it.
		 */
		if (sdp->sd_flags & NSMBFL_IOD)
			smb_iod_disconnect(vcp);
		smb_vc_rele(vcp);
	}

	smb_credrele(&scred);
	return (0);
}
Beispiel #2
0
/*
 * Get file system statistics.
 */
static int
smbfs_statvfs(vfs_t *vfsp, statvfs64_t *sbp)
{
	int		error;
	smbmntinfo_t	*smi = VFTOSMI(vfsp);
	smb_share_t	*ssp = smi->smi_share;
	statvfs64_t	stvfs;
	hrtime_t now;
	smb_cred_t	scred;

	if (curproc->p_zone != smi->smi_zone_ref.zref_zone)
		return (EPERM);

	if (smi->smi_flags & SMI_DEAD || vfsp->vfs_flag & VFS_UNMOUNTED)
		return (EIO);

	mutex_enter(&smi->smi_lock);

	/*
	 * Use cached result if still valid.
	 */
recheck:
	now = gethrtime();
	if (now < smi->smi_statfstime) {
		error = 0;
		goto cache_hit;
	}

	/*
	 * FS attributes are stale, so someone
	 * needs to do an OTW call to get them.
	 * Serialize here so only one thread
	 * does the OTW call.
	 */
	if (smi->smi_status & SM_STATUS_STATFS_BUSY) {
		smi->smi_status |= SM_STATUS_STATFS_WANT;
		if (!cv_wait_sig(&smi->smi_statvfs_cv, &smi->smi_lock)) {
			mutex_exit(&smi->smi_lock);
			return (EINTR);
		}
		/* Hope status is valid now. */
		goto recheck;
	}
	smi->smi_status |= SM_STATUS_STATFS_BUSY;
	mutex_exit(&smi->smi_lock);

	/*
	 * Do the OTW call.  Note: lock NOT held.
	 */
	smb_credinit(&scred, NULL);
	bzero(&stvfs, sizeof (stvfs));
	error = smbfs_smb_statfs(ssp, &stvfs, &scred);
	smb_credrele(&scred);
	if (error) {
		SMBVDEBUG("statfs error=%d\n", error);
	} else {

		/*
		 * Set a few things the OTW call didn't get.
		 */
		stvfs.f_frsize = stvfs.f_bsize;
		stvfs.f_favail = stvfs.f_ffree;
		stvfs.f_fsid = (unsigned long)vfsp->vfs_fsid.val[0];
		bcopy(fs_type_name, stvfs.f_basetype, FSTYPSZ);
		stvfs.f_flag	= vf_to_stf(vfsp->vfs_flag);
		stvfs.f_namemax	= smi->smi_fsa.fsa_maxname;

		/*
		 * Save the result, update lifetime
		 */
		now = gethrtime();
		smi->smi_statfstime = now +
		    (SM_MAX_STATFSTIME * (hrtime_t)NANOSEC);
		smi->smi_statvfsbuf = stvfs; /* struct assign! */
	}

	mutex_enter(&smi->smi_lock);
	if (smi->smi_status & SM_STATUS_STATFS_WANT)
		cv_broadcast(&smi->smi_statvfs_cv);
	smi->smi_status &= ~(SM_STATUS_STATFS_BUSY | SM_STATUS_STATFS_WANT);

	/*
	 * Copy the statvfs data to caller's buf.
	 * Note: struct assignment
	 */
cache_hit:
	if (error == 0)
		*sbp = smi->smi_statvfsbuf;
	mutex_exit(&smi->smi_lock);
	return (error);
}
Beispiel #3
0
/*
 * smbfs mount vfsop
 * Set up mount info record and attach it to vfs struct.
 */
static int
smbfs_mount(vfs_t *vfsp, vnode_t *mvp, struct mounta *uap, cred_t *cr)
{
	char		*data = uap->dataptr;
	int		error;
	smbnode_t 	*rtnp = NULL;	/* root of this fs */
	smbmntinfo_t 	*smi = NULL;
	dev_t 		smbfs_dev;
	int 		version;
	int 		devfd;
	zone_t		*zone = curproc->p_zone;
	zone_t		*mntzone = NULL;
	smb_share_t 	*ssp = NULL;
	smb_cred_t 	scred;
	int		flags, sec;

	STRUCT_DECL(smbfs_args, args);		/* smbfs mount arguments */

	if ((error = secpolicy_fs_mount(cr, mvp, vfsp)) != 0)
		return (error);

	if (mvp->v_type != VDIR)
		return (ENOTDIR);

	/*
	 * get arguments
	 *
	 * uap->datalen might be different from sizeof (args)
	 * in a compatible situation.
	 */
	STRUCT_INIT(args, get_udatamodel());
	bzero(STRUCT_BUF(args), SIZEOF_STRUCT(smbfs_args, DATAMODEL_NATIVE));
	if (copyin(data, STRUCT_BUF(args), MIN(uap->datalen,
	    SIZEOF_STRUCT(smbfs_args, DATAMODEL_NATIVE))))
		return (EFAULT);

	/*
	 * Check mount program version
	 */
	version = STRUCT_FGET(args, version);
	if (version != SMBFS_VERSION) {
		cmn_err(CE_WARN, "mount version mismatch:"
		    " kernel=%d, mount=%d\n",
		    SMBFS_VERSION, version);
		return (EINVAL);
	}

	/*
	 * Deal with re-mount requests.
	 */
	if (uap->flags & MS_REMOUNT) {
		cmn_err(CE_WARN, "MS_REMOUNT not implemented");
		return (ENOTSUP);
	}

	/*
	 * Check for busy
	 */
	mutex_enter(&mvp->v_lock);
	if (!(uap->flags & MS_OVERLAY) &&
	    (mvp->v_count != 1 || (mvp->v_flag & VROOT))) {
		mutex_exit(&mvp->v_lock);
		return (EBUSY);
	}
	mutex_exit(&mvp->v_lock);

	/*
	 * Get the "share" from the netsmb driver (ssp).
	 * It is returned with a "ref" (hold) for us.
	 * Release this hold: at errout below, or in
	 * smbfs_freevfs().
	 */
	devfd = STRUCT_FGET(args, devfd);
	error = smb_dev2share(devfd, &ssp);
	if (error) {
		cmn_err(CE_WARN, "invalid device handle %d (%d)\n",
		    devfd, error);
		return (error);
	}

	/*
	 * Use "goto errout" from here on.
	 * See: ssp, smi, rtnp, mntzone
	 */

	/*
	 * Determine the zone we're being mounted into.
	 */
	zone_hold(mntzone = zone);		/* start with this assumption */
	if (getzoneid() == GLOBAL_ZONEID) {
		zone_rele(mntzone);
		mntzone = zone_find_by_path(refstr_value(vfsp->vfs_mntpt));
		ASSERT(mntzone != NULL);
		if (mntzone != zone) {
			error = EBUSY;
			goto errout;
		}
	}

	/*
	 * Stop the mount from going any further if the zone is going away.
	 */
	if (zone_status_get(mntzone) >= ZONE_IS_SHUTTING_DOWN) {
		error = EBUSY;
		goto errout;
	}

	/*
	 * On a Trusted Extensions client, we may have to force read-only
	 * for read-down mounts.
	 */
	if (is_system_labeled()) {
		void *addr;
		int ipvers = 0;
		struct smb_vc *vcp;

		vcp = SSTOVC(ssp);
		addr = smb_vc_getipaddr(vcp, &ipvers);
		error = smbfs_mount_label_policy(vfsp, addr, ipvers, cr);

		if (error > 0)
			goto errout;

		if (error == -1) {
			/* change mount to read-only to prevent write-down */
			vfs_setmntopt(vfsp, MNTOPT_RO, NULL, 0);
		}
	}

	/* Prevent unload. */
	atomic_inc_32(&smbfs_mountcount);

	/*
	 * Create a mount record and link it to the vfs struct.
	 * No more possiblities for errors from here on.
	 * Tear-down of this stuff is in smbfs_free_smi()
	 *
	 * Compare with NFS: nfsrootvp()
	 */
	smi = kmem_zalloc(sizeof (*smi), KM_SLEEP);

	mutex_init(&smi->smi_lock, NULL, MUTEX_DEFAULT, NULL);
	cv_init(&smi->smi_statvfs_cv, NULL, CV_DEFAULT, NULL);

	rw_init(&smi->smi_hash_lk, NULL, RW_DEFAULT, NULL);
	smbfs_init_hash_avl(&smi->smi_hash_avl);

	smi->smi_share = ssp;
	ssp = NULL;

	/*
	 * Convert the anonymous zone hold acquired via zone_hold() above
	 * into a zone reference.
	 */
	zone_init_ref(&smi->smi_zone_ref);
	zone_hold_ref(mntzone, &smi->smi_zone_ref, ZONE_REF_SMBFS);
	zone_rele(mntzone);
	mntzone = NULL;

	/*
	 * Initialize option defaults
	 */
	smi->smi_flags	= SMI_LLOCK;
	smi->smi_acregmin = SEC2HR(SMBFS_ACREGMIN);
	smi->smi_acregmax = SEC2HR(SMBFS_ACREGMAX);
	smi->smi_acdirmin = SEC2HR(SMBFS_ACDIRMIN);
	smi->smi_acdirmax = SEC2HR(SMBFS_ACDIRMAX);

	/*
	 * All "generic" mount options have already been
	 * handled in vfs.c:domount() - see mntopts stuff.
	 * Query generic options using vfs_optionisset().
	 */
	if (vfs_optionisset(vfsp, MNTOPT_INTR, NULL))
		smi->smi_flags |= SMI_INT;
	if (vfs_optionisset(vfsp, MNTOPT_ACL, NULL))
		smi->smi_flags |= SMI_ACL;

	/*
	 * Get the mount options that come in as smbfs_args,
	 * starting with args.flags (SMBFS_MF_xxx)
	 */
	flags = STRUCT_FGET(args, flags);
	smi->smi_uid 	= STRUCT_FGET(args, uid);
	smi->smi_gid 	= STRUCT_FGET(args, gid);
	smi->smi_fmode	= STRUCT_FGET(args, file_mode) & 0777;
	smi->smi_dmode	= STRUCT_FGET(args, dir_mode) & 0777;

	/*
	 * Hande the SMBFS_MF_xxx flags.
	 */
	if (flags & SMBFS_MF_NOAC)
		smi->smi_flags |= SMI_NOAC;
	if (flags & SMBFS_MF_ACREGMIN) {
		sec = STRUCT_FGET(args, acregmin);
		if (sec < 0 || sec > SMBFS_ACMINMAX)
			sec = SMBFS_ACMINMAX;
		smi->smi_acregmin = SEC2HR(sec);
	}
	if (flags & SMBFS_MF_ACREGMAX) {
		sec = STRUCT_FGET(args, acregmax);
		if (sec < 0 || sec > SMBFS_ACMAXMAX)
			sec = SMBFS_ACMAXMAX;
		smi->smi_acregmax = SEC2HR(sec);
	}
	if (flags & SMBFS_MF_ACDIRMIN) {
		sec = STRUCT_FGET(args, acdirmin);
		if (sec < 0 || sec > SMBFS_ACMINMAX)
			sec = SMBFS_ACMINMAX;
		smi->smi_acdirmin = SEC2HR(sec);
	}
	if (flags & SMBFS_MF_ACDIRMAX) {
		sec = STRUCT_FGET(args, acdirmax);
		if (sec < 0 || sec > SMBFS_ACMAXMAX)
			sec = SMBFS_ACMAXMAX;
		smi->smi_acdirmax = SEC2HR(sec);
	}

	/*
	 * Get attributes of the remote file system,
	 * i.e. ACL support, named streams, etc.
	 */
	smb_credinit(&scred, cr);
	error = smbfs_smb_qfsattr(smi->smi_share, &smi->smi_fsa, &scred);
	smb_credrele(&scred);
	if (error) {
		SMBVDEBUG("smbfs_smb_qfsattr error %d\n", error);
	}

	/*
	 * We enable XATTR by default (via smbfs_mntopts)
	 * but if the share does not support named streams,
	 * force the NOXATTR option (also clears XATTR).
	 * Caller will set or clear VFS_XATTR after this.
	 */
	if ((smi->smi_fsattr & FILE_NAMED_STREAMS) == 0)
		vfs_setmntopt(vfsp, MNTOPT_NOXATTR, NULL, 0);

	/*
	 * Ditto ACLs (disable if not supported on this share)
	 */
	if ((smi->smi_fsattr & FILE_PERSISTENT_ACLS) == 0) {
		vfs_setmntopt(vfsp, MNTOPT_NOACL, NULL, 0);
		smi->smi_flags &= ~SMI_ACL;
	}

	/*
	 * Assign a unique device id to the mount
	 */
	mutex_enter(&smbfs_minor_lock);
	do {
		smbfs_minor = (smbfs_minor + 1) & MAXMIN32;
		smbfs_dev = makedevice(smbfs_major, smbfs_minor);
	} while (vfs_devismounted(smbfs_dev));
	mutex_exit(&smbfs_minor_lock);

	vfsp->vfs_dev	= smbfs_dev;
	vfs_make_fsid(&vfsp->vfs_fsid, smbfs_dev, smbfsfstyp);
	vfsp->vfs_data	= (caddr_t)smi;
	vfsp->vfs_fstype = smbfsfstyp;
	vfsp->vfs_bsize = MAXBSIZE;
	vfsp->vfs_bcount = 0;

	smi->smi_vfsp	= vfsp;
	smbfs_zonelist_add(smi);	/* undo in smbfs_freevfs */

	/*
	 * Create the root vnode, which we need in unmount
	 * for the call to smbfs_check_table(), etc.
	 * Release this hold in smbfs_unmount.
	 */
	rtnp = smbfs_node_findcreate(smi, "\\", 1, NULL, 0, 0,
	    &smbfs_fattr0);
	ASSERT(rtnp != NULL);
	rtnp->r_vnode->v_type = VDIR;
	rtnp->r_vnode->v_flag |= VROOT;
	smi->smi_root = rtnp;

	/*
	 * NFS does other stuff here too:
	 *   async worker threads
	 *   init kstats
	 *
	 * End of code from NFS nfsrootvp()
	 */
	return (0);

errout:
	vfsp->vfs_data = NULL;
	if (smi != NULL)
		smbfs_free_smi(smi);

	if (mntzone != NULL)
		zone_rele(mntzone);

	if (ssp != NULL)
		smb_share_rele(ssp);

	return (error);
}