14bff34e3Sthurlow /*
24bff34e3Sthurlow  * Copyright (c) 2000-2001, Boris Popov
34bff34e3Sthurlow  * All rights reserved.
44bff34e3Sthurlow  *
54bff34e3Sthurlow  * Redistribution and use in source and binary forms, with or without
64bff34e3Sthurlow  * modification, are permitted provided that the following conditions
74bff34e3Sthurlow  * are met:
84bff34e3Sthurlow  * 1. Redistributions of source code must retain the above copyright
94bff34e3Sthurlow  *    notice, this list of conditions and the following disclaimer.
104bff34e3Sthurlow  * 2. Redistributions in binary form must reproduce the above copyright
114bff34e3Sthurlow  *    notice, this list of conditions and the following disclaimer in the
124bff34e3Sthurlow  *    documentation and/or other materials provided with the distribution.
134bff34e3Sthurlow  * 3. All advertising materials mentioning features or use of this software
144bff34e3Sthurlow  *    must display the following acknowledgement:
154bff34e3Sthurlow  *    This product includes software developed by Boris Popov.
164bff34e3Sthurlow  * 4. Neither the name of the author nor the names of any co-contributors
174bff34e3Sthurlow  *    may be used to endorse or promote products derived from this software
184bff34e3Sthurlow  *    without specific prior written permission.
194bff34e3Sthurlow  *
204bff34e3Sthurlow  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
214bff34e3Sthurlow  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
224bff34e3Sthurlow  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
234bff34e3Sthurlow  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
244bff34e3Sthurlow  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
254bff34e3Sthurlow  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
264bff34e3Sthurlow  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
274bff34e3Sthurlow  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
284bff34e3Sthurlow  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
294bff34e3Sthurlow  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
304bff34e3Sthurlow  * SUCH DAMAGE.
314bff34e3Sthurlow  *
324bff34e3Sthurlow  * $Id: smbfs_vfsops.c,v 1.73.64.1 2005/05/27 02:35:28 lindak Exp $
334bff34e3Sthurlow  */
344bff34e3Sthurlow 
354bff34e3Sthurlow /*
360fbb751dSJohn Levon  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
378cd81a20SJerry Jelinek  * Copyright 2013, Joyent, Inc. All rights reserved.
3848bbca81SDaniel Hoffman  * Copyright (c) 2016 by Delphix. All rights reserved.
39*8329232eSGordon Ross  * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
404bff34e3Sthurlow  */
414bff34e3Sthurlow 
424bff34e3Sthurlow #include <sys/systm.h>
434bff34e3Sthurlow #include <sys/cred.h>
4402d09e03SGordon Ross #include <sys/time.h>
454bff34e3Sthurlow #include <sys/vfs.h>
464bff34e3Sthurlow #include <sys/vnode.h>
474bff34e3Sthurlow #include <fs/fs_subr.h>
484bff34e3Sthurlow #include <sys/sysmacros.h>
494bff34e3Sthurlow #include <sys/kmem.h>
504bff34e3Sthurlow #include <sys/mkdev.h>
514bff34e3Sthurlow #include <sys/mount.h>
524bff34e3Sthurlow #include <sys/statvfs.h>
534bff34e3Sthurlow #include <sys/errno.h>
544bff34e3Sthurlow #include <sys/debug.h>
554e72ade1SGordon Ross #include <sys/disp.h>
564bff34e3Sthurlow #include <sys/cmn_err.h>
574bff34e3Sthurlow #include <sys/modctl.h>
584bff34e3Sthurlow #include <sys/policy.h>
594bff34e3Sthurlow #include <sys/atomic.h>
604bff34e3Sthurlow #include <sys/zone.h>
614bff34e3Sthurlow #include <sys/vfs_opreg.h>
624bff34e3Sthurlow #include <sys/mntent.h>
634bff34e3Sthurlow #include <sys/priv.h>
644e72ade1SGordon Ross #include <sys/taskq.h>
654bff34e3Sthurlow #include <sys/tsol/label.h>
664bff34e3Sthurlow #include <sys/tsol/tndb.h>
674bff34e3Sthurlow #include <inet/ip.h>
684bff34e3Sthurlow 
694bff34e3Sthurlow #include <netsmb/smb_osdep.h>
704bff34e3Sthurlow #include <netsmb/smb.h>
714bff34e3Sthurlow #include <netsmb/smb_conn.h>
724bff34e3Sthurlow #include <netsmb/smb_subr.h>
734bff34e3Sthurlow #include <netsmb/smb_dev.h>
744bff34e3Sthurlow 
754bff34e3Sthurlow #include <smbfs/smbfs.h>
764bff34e3Sthurlow #include <smbfs/smbfs_node.h>
774bff34e3Sthurlow #include <smbfs/smbfs_subr.h>
784bff34e3Sthurlow 
79*8329232eSGordon Ross #ifndef	_KERNEL
80*8329232eSGordon Ross 
81*8329232eSGordon Ross #include <libfksmbfs.h>
82*8329232eSGordon Ross 
83*8329232eSGordon Ross #define	STRUCT_DECL(s, a) struct s a
84*8329232eSGordon Ross #define	STRUCT_FGET(handle, field) ((handle).field)
85*8329232eSGordon Ross #define	_init(v)	fksmbfs_init(v)
86*8329232eSGordon Ross #define	_fini(v)	fksmbfs_fini(v)
87*8329232eSGordon Ross 
88*8329232eSGordon Ross #endif	/* !_KERNEL */
89*8329232eSGordon Ross 
909005860cSGordon Ross /*
919005860cSGordon Ross  * Should smbfs mount enable "-o acl" by default?  There are good
929005860cSGordon Ross  * arguments for both.  The most common use case is individual users
939005860cSGordon Ross  * accessing files on some SMB server, for which "noacl" is the more
949005860cSGordon Ross  * convenient default.  A less common use case is data migration,
959005860cSGordon Ross  * where the "acl" option might be a desirable default.  We'll make
969005860cSGordon Ross  * the common use case the default.  This default can be changed via
979005860cSGordon Ross  * /etc/system, and/or set per-mount via the "acl" mount option.
989005860cSGordon Ross  */
999005860cSGordon Ross int smbfs_default_opt_acl = 0;
1009005860cSGordon Ross 
1014e72ade1SGordon Ross /*
1024e72ade1SGordon Ross  * How many taskq threads per-mount should we use.
1034e72ade1SGordon Ross  * Just one is fine (until we do more async work).
1044e72ade1SGordon Ross  */
1054e72ade1SGordon Ross int smbfs_tq_nthread = 1;
1064e72ade1SGordon Ross 
1074bff34e3Sthurlow /*
1084bff34e3Sthurlow  * Local functions definitions.
1094bff34e3Sthurlow  */
1104bff34e3Sthurlow int		smbfsinit(int fstyp, char *name);
1114bff34e3Sthurlow void		smbfsfini();
112*8329232eSGordon Ross 
113*8329232eSGordon Ross #ifdef	_KERNEL
1144bff34e3Sthurlow static int	smbfs_mount_label_policy(vfs_t *, void *, int, cred_t *);
115*8329232eSGordon Ross #endif	/* _KERNEL */
1164bff34e3Sthurlow 
11791d632c8Sgwr /*
11891d632c8Sgwr  * SMBFS Mount options table for MS_OPTIONSTR
11991d632c8Sgwr  * Note: These are not all the options.
12091d632c8Sgwr  * Some options come in via MS_DATA.
12191d632c8Sgwr  * Others are generic (see vfs.c)
12291d632c8Sgwr  */
12391d632c8Sgwr static char *intr_cancel[] = { MNTOPT_NOINTR, NULL };
12491d632c8Sgwr static char *nointr_cancel[] = { MNTOPT_INTR, NULL };
125bd7c6f51SGordon Ross static char *acl_cancel[] = { MNTOPT_NOACL, NULL };
126bd7c6f51SGordon Ross static char *noacl_cancel[] = { MNTOPT_ACL, NULL };
12791d632c8Sgwr static char *xattr_cancel[] = { MNTOPT_NOXATTR, NULL };
12891d632c8Sgwr static char *noxattr_cancel[] = { MNTOPT_XATTR, NULL };
12991d632c8Sgwr 
13091d632c8Sgwr static mntopt_t mntopts[] = {
13191d632c8Sgwr /*
13291d632c8Sgwr  *	option name		cancel option	default arg	flags
13391d632c8Sgwr  *		ufs arg flag
13491d632c8Sgwr  */
13591d632c8Sgwr 	{ MNTOPT_INTR,		intr_cancel,	NULL,	MO_DEFAULT, 0 },
13691d632c8Sgwr 	{ MNTOPT_NOINTR,	nointr_cancel,	NULL,	0,	0 },
1379005860cSGordon Ross 	{ MNTOPT_ACL,		acl_cancel,	NULL,	0,	0 },
138bd7c6f51SGordon Ross 	{ MNTOPT_NOACL,		noacl_cancel,	NULL,	0,	0 },
13991d632c8Sgwr 	{ MNTOPT_XATTR,		xattr_cancel,	NULL,	MO_DEFAULT, 0 },
140*8329232eSGordon Ross 	{ MNTOPT_NOXATTR,	noxattr_cancel, NULL,	0,	0 },
141*8329232eSGordon Ross #ifndef	_KERNEL
142*8329232eSGordon Ross 	/* See vfs_optionisset MNTOPT_NOAC below. */
143*8329232eSGordon Ross 	{ MNTOPT_NOAC,		NULL,		NULL,	0,	0 },
144*8329232eSGordon Ross #endif	/* !_KERNEL */
14591d632c8Sgwr };
14691d632c8Sgwr 
14791d632c8Sgwr static mntopts_t smbfs_mntopts = {
14891d632c8Sgwr 	sizeof (mntopts) / sizeof (mntopt_t),
14991d632c8Sgwr 	mntopts
15091d632c8Sgwr };
15191d632c8Sgwr 
152613a2f6bSGordon Ross static const char fs_type_name[FSTYPSZ] = "smbfs";
153613a2f6bSGordon Ross 
1544bff34e3Sthurlow static vfsdef_t vfw = {
1554bff34e3Sthurlow 	VFSDEF_VERSION,
156613a2f6bSGordon Ross 	(char *)fs_type_name,
1574bff34e3Sthurlow 	smbfsinit,		/* init routine */
1588cd81a20SJerry Jelinek 	VSW_HASPROTO|VSW_NOTZONESAFE,	/* flags */
15991d632c8Sgwr 	&smbfs_mntopts			/* mount options table prototype */
1604bff34e3Sthurlow };
1614bff34e3Sthurlow 
162*8329232eSGordon Ross #ifdef	_KERNEL
1634bff34e3Sthurlow static struct modlfs modlfs = {
1644bff34e3Sthurlow 	&mod_fsops,
165613a2f6bSGordon Ross 	"SMBFS filesystem",
1664bff34e3Sthurlow 	&vfw
1674bff34e3Sthurlow };
1684bff34e3Sthurlow 
1694bff34e3Sthurlow static struct modlinkage modlinkage = {
1704bff34e3Sthurlow 	MODREV_1, (void *)&modlfs, NULL
1714bff34e3Sthurlow };
172*8329232eSGordon Ross #endif	/* _KERNEL */
1734bff34e3Sthurlow 
1744bff34e3Sthurlow /*
1754bff34e3Sthurlow  * Mutex to protect the following variables:
1764bff34e3Sthurlow  *	  smbfs_major
1774bff34e3Sthurlow  *	  smbfs_minor
1784bff34e3Sthurlow  */
1794bff34e3Sthurlow extern	kmutex_t	smbfs_minor_lock;
1804bff34e3Sthurlow extern	int		smbfs_major;
1814bff34e3Sthurlow extern	int		smbfs_minor;
1824bff34e3Sthurlow 
1834bff34e3Sthurlow /*
1844bff34e3Sthurlow  * Prevent unloads while we have mounts
1854bff34e3Sthurlow  */
1864bff34e3Sthurlow uint32_t	smbfs_mountcount;
1874bff34e3Sthurlow 
1884bff34e3Sthurlow /*
1894bff34e3Sthurlow  * smbfs vfs operations.
1904bff34e3Sthurlow  */
1914bff34e3Sthurlow static int	smbfs_mount(vfs_t *, vnode_t *, struct mounta *, cred_t *);
1924bff34e3Sthurlow static int	smbfs_unmount(vfs_t *, int, cred_t *);
1934bff34e3Sthurlow static int	smbfs_root(vfs_t *, vnode_t **);
1944bff34e3Sthurlow static int	smbfs_statvfs(vfs_t *, statvfs64_t *);
1954bff34e3Sthurlow static int	smbfs_sync(vfs_t *, short, cred_t *);
1964bff34e3Sthurlow static void	smbfs_freevfs(vfs_t *);
1974bff34e3Sthurlow 
1984bff34e3Sthurlow /*
1994bff34e3Sthurlow  * Module loading
2004bff34e3Sthurlow  */
2014bff34e3Sthurlow 
2024bff34e3Sthurlow /*
2034bff34e3Sthurlow  * This routine is invoked automatically when the kernel module
2044bff34e3Sthurlow  * containing this routine is loaded.  This allows module specific
2054bff34e3Sthurlow  * initialization to be done when the module is loaded.
2064bff34e3Sthurlow  */
2074bff34e3Sthurlow int
_init(void)2084bff34e3Sthurlow _init(void)
2094bff34e3Sthurlow {
21002d09e03SGordon Ross 	int		error;
2114bff34e3Sthurlow 
2124bff34e3Sthurlow 	/*
2134bff34e3Sthurlow 	 * Check compiled-in version of "nsmb"
2144bff34e3Sthurlow 	 * that we're linked with.  (paranoid)
2154bff34e3Sthurlow 	 */
2164bff34e3Sthurlow 	if (nsmb_version != NSMB_VERSION) {
2174bff34e3Sthurlow 		cmn_err(CE_WARN, "_init: nsmb version mismatch");
2184bff34e3Sthurlow 		return (ENOTTY);
2194bff34e3Sthurlow 	}
2204bff34e3Sthurlow 
2214bff34e3Sthurlow 	smbfs_mountcount = 0;
2224bff34e3Sthurlow 
22302d09e03SGordon Ross 	/*
22402d09e03SGordon Ross 	 * NFS calls these two in _clntinit
22502d09e03SGordon Ross 	 * Easier to follow this way.
22602d09e03SGordon Ross 	 */
22702d09e03SGordon Ross 	if ((error = smbfs_subrinit()) != 0) {
22802d09e03SGordon Ross 		cmn_err(CE_WARN, "_init: smbfs_subrinit failed");
22902d09e03SGordon Ross 		return (error);
23002d09e03SGordon Ross 	}
23102d09e03SGordon Ross 
23202d09e03SGordon Ross 	if ((error = smbfs_vfsinit()) != 0) {
23302d09e03SGordon Ross 		cmn_err(CE_WARN, "_init: smbfs_vfsinit failed");
23402d09e03SGordon Ross 		smbfs_subrfini();
23502d09e03SGordon Ross 		return (error);
23602d09e03SGordon Ross 	}
23702d09e03SGordon Ross 
23802d09e03SGordon Ross 	if ((error = smbfs_clntinit()) != 0) {
2394bff34e3Sthurlow 		cmn_err(CE_WARN, "_init: smbfs_clntinit failed");
24002d09e03SGordon Ross 		smbfs_vfsfini();
24102d09e03SGordon Ross 		smbfs_subrfini();
24202d09e03SGordon Ross 		return (error);
2434bff34e3Sthurlow 	}
2444bff34e3Sthurlow 
245*8329232eSGordon Ross #ifdef	_KERNEL
24602d09e03SGordon Ross 	error = mod_install((struct modlinkage *)&modlinkage);
247*8329232eSGordon Ross #else	/* _KERNEL */
248*8329232eSGordon Ross 	error = fake_installfs(&vfw);
249*8329232eSGordon Ross #endif	/* _KERNEL */
250*8329232eSGordon Ross 
25102d09e03SGordon Ross 	return (error);
2524bff34e3Sthurlow }
2534bff34e3Sthurlow 
2544bff34e3Sthurlow /*
2554bff34e3Sthurlow  * Free kernel module resources that were allocated in _init
2564bff34e3Sthurlow  * and remove the linkage information into the kernel
2574bff34e3Sthurlow  */
2584bff34e3Sthurlow int
_fini(void)2594bff34e3Sthurlow _fini(void)
2604bff34e3Sthurlow {
2614bff34e3Sthurlow 	int	error;
2624bff34e3Sthurlow 
2634bff34e3Sthurlow 	/*
2644bff34e3Sthurlow 	 * If a forcedly unmounted instance is still hanging around,
2654bff34e3Sthurlow 	 * we cannot allow the module to be unloaded because that would
2664bff34e3Sthurlow 	 * cause panics once the VFS framework decides it's time to call
2674bff34e3Sthurlow 	 * into VFS_FREEVFS().
2684bff34e3Sthurlow 	 */
2694bff34e3Sthurlow 	if (smbfs_mountcount)
2704bff34e3Sthurlow 		return (EBUSY);
2714bff34e3Sthurlow 
272*8329232eSGordon Ross #ifdef	_KERNEL
2734bff34e3Sthurlow 	error = mod_remove(&modlinkage);
274*8329232eSGordon Ross #else	/* _KERNEL */
275*8329232eSGordon Ross 	error = fake_removefs(&vfw);
276*8329232eSGordon Ross #endif	/* _KERNEL */
2774bff34e3Sthurlow 	if (error)
2784bff34e3Sthurlow 		return (error);
2794bff34e3Sthurlow 
2804bff34e3Sthurlow 	/*
2814bff34e3Sthurlow 	 * Free the allocated smbnodes, etc.
2824bff34e3Sthurlow 	 */
2834bff34e3Sthurlow 	smbfs_clntfini();
2844bff34e3Sthurlow 
28502d09e03SGordon Ross 	/* NFS calls these two in _clntfini */
28602d09e03SGordon Ross 	smbfs_vfsfini();
28702d09e03SGordon Ross 	smbfs_subrfini();
28802d09e03SGordon Ross 
2894bff34e3Sthurlow 	/*
2904bff34e3Sthurlow 	 * Free the ops vectors
2914bff34e3Sthurlow 	 */
2924bff34e3Sthurlow 	smbfsfini();
2934bff34e3Sthurlow 	return (0);
2944bff34e3Sthurlow }
2954bff34e3Sthurlow 
2964bff34e3Sthurlow /*
2974bff34e3Sthurlow  * Return information about the module
2984bff34e3Sthurlow  */
299*8329232eSGordon Ross #ifdef	_KERNEL
3004bff34e3Sthurlow int
_info(struct modinfo * modinfop)3014bff34e3Sthurlow _info(struct modinfo *modinfop)
3024bff34e3Sthurlow {
3034bff34e3Sthurlow 	return (mod_info((struct modlinkage *)&modlinkage, modinfop));
3044bff34e3Sthurlow }
305*8329232eSGordon Ross #endif	/* _KERNEL */
3064bff34e3Sthurlow 
3074bff34e3Sthurlow /*
3084bff34e3Sthurlow  * Initialize the vfs structure
3094bff34e3Sthurlow  */
3104bff34e3Sthurlow 
311*8329232eSGordon Ross int smbfs_fstyp;
3124bff34e3Sthurlow vfsops_t *smbfs_vfsops = NULL;
3134bff34e3Sthurlow 
3144bff34e3Sthurlow static const fs_operation_def_t smbfs_vfsops_template[] = {
3154bff34e3Sthurlow 	{ VFSNAME_MOUNT, { .vfs_mount = smbfs_mount } },
3164bff34e3Sthurlow 	{ VFSNAME_UNMOUNT, { .vfs_unmount = smbfs_unmount } },
3174bff34e3Sthurlow 	{ VFSNAME_ROOT,	{ .vfs_root = smbfs_root } },
3184bff34e3Sthurlow 	{ VFSNAME_STATVFS, { .vfs_statvfs = smbfs_statvfs } },
3194bff34e3Sthurlow 	{ VFSNAME_SYNC,	{ .vfs_sync = smbfs_sync } },
3204bff34e3Sthurlow 	{ VFSNAME_VGET,	{ .error = fs_nosys } },
3214bff34e3Sthurlow 	{ VFSNAME_MOUNTROOT, { .error = fs_nosys } },
3224bff34e3Sthurlow 	{ VFSNAME_FREEVFS, { .vfs_freevfs = smbfs_freevfs } },
3234bff34e3Sthurlow 	{ NULL, NULL }
3244bff34e3Sthurlow };
3254bff34e3Sthurlow 
326*8329232eSGordon Ross /*
327*8329232eSGordon Ross  * This is the VFS switch initialization routine, normally called
328*8329232eSGordon Ross  * via vfssw[x].vsw_init by vfsinit() or mod_install
329*8329232eSGordon Ross  */
3304bff34e3Sthurlow int
smbfsinit(int fstyp,char * name)3314bff34e3Sthurlow smbfsinit(int fstyp, char *name)
3324bff34e3Sthurlow {
3334bff34e3Sthurlow 	int		error;
3344bff34e3Sthurlow 
3354bff34e3Sthurlow 	error = vfs_setfsops(fstyp, smbfs_vfsops_template, &smbfs_vfsops);
3364bff34e3Sthurlow 	if (error != 0) {
337*8329232eSGordon Ross 		cmn_err(CE_WARN,
3384bff34e3Sthurlow 		    "smbfsinit: bad vfs ops template");
3394bff34e3Sthurlow 		return (error);
3404bff34e3Sthurlow 	}
3414bff34e3Sthurlow 
3424bff34e3Sthurlow 	error = vn_make_ops(name, smbfs_vnodeops_template, &smbfs_vnodeops);
3434bff34e3Sthurlow 	if (error != 0) {
3444bff34e3Sthurlow 		(void) vfs_freevfsops_by_type(fstyp);
345*8329232eSGordon Ross 		cmn_err(CE_WARN,
3464bff34e3Sthurlow 		    "smbfsinit: bad vnode ops template");
3474bff34e3Sthurlow 		return (error);
3484bff34e3Sthurlow 	}
3494bff34e3Sthurlow 
350*8329232eSGordon Ross 	smbfs_fstyp = fstyp;
3514bff34e3Sthurlow 
3524bff34e3Sthurlow 	return (0);
3534bff34e3Sthurlow }
3544bff34e3Sthurlow 
3554bff34e3Sthurlow void
smbfsfini()3564bff34e3Sthurlow smbfsfini()
3574bff34e3Sthurlow {
3584bff34e3Sthurlow 	if (smbfs_vfsops) {
359*8329232eSGordon Ross 		(void) vfs_freevfsops_by_type(smbfs_fstyp);
3604bff34e3Sthurlow 		smbfs_vfsops = NULL;
3614bff34e3Sthurlow 	}
3624bff34e3Sthurlow 	if (smbfs_vnodeops) {
3634bff34e3Sthurlow 		vn_freevnodeops(smbfs_vnodeops);
3644bff34e3Sthurlow 		smbfs_vnodeops = NULL;
3654bff34e3Sthurlow 	}
3664bff34e3Sthurlow }
3674bff34e3Sthurlow 
3684bff34e3Sthurlow void
smbfs_free_smi(smbmntinfo_t * smi)3694bff34e3Sthurlow smbfs_free_smi(smbmntinfo_t *smi)
3704bff34e3Sthurlow {
37102d09e03SGordon Ross 	if (smi == NULL)
37202d09e03SGordon Ross 		return;
37302d09e03SGordon Ross 
374*8329232eSGordon Ross #ifdef	_KERNEL
375a19609f8Sjv 	if (smi->smi_zone_ref.zref_zone != NULL)
376a19609f8Sjv 		zone_rele_ref(&smi->smi_zone_ref, ZONE_REF_SMBFS);
377*8329232eSGordon Ross #endif	/* _KERNEL */
37802d09e03SGordon Ross 
37902d09e03SGordon Ross 	if (smi->smi_share != NULL)
38002d09e03SGordon Ross 		smb_share_rele(smi->smi_share);
38102d09e03SGordon Ross 
38202d09e03SGordon Ross 	avl_destroy(&smi->smi_hash_avl);
38302d09e03SGordon Ross 	rw_destroy(&smi->smi_hash_lk);
38402d09e03SGordon Ross 	cv_destroy(&smi->smi_statvfs_cv);
38502d09e03SGordon Ross 	mutex_destroy(&smi->smi_lock);
38602d09e03SGordon Ross 
38702d09e03SGordon Ross 	kmem_free(smi, sizeof (smbmntinfo_t));
3884bff34e3Sthurlow }
3894bff34e3Sthurlow 
3904bff34e3Sthurlow /*
3914bff34e3Sthurlow  * smbfs mount vfsop
3924bff34e3Sthurlow  * Set up mount info record and attach it to vfs struct.
3934bff34e3Sthurlow  */
3944bff34e3Sthurlow static int
smbfs_mount(vfs_t * vfsp,vnode_t * mvp,struct mounta * uap,cred_t * cr)3954bff34e3Sthurlow smbfs_mount(vfs_t *vfsp, vnode_t *mvp, struct mounta *uap, cred_t *cr)
3964bff34e3Sthurlow {
3974bff34e3Sthurlow 	char		*data = uap->dataptr;
3984bff34e3Sthurlow 	int		error;
3995f4fc069Sjilinxpd 	smbnode_t	*rtnp = NULL;	/* root of this fs */
4005f4fc069Sjilinxpd 	smbmntinfo_t	*smi = NULL;
4015f4fc069Sjilinxpd 	dev_t		smbfs_dev;
4025f4fc069Sjilinxpd 	int		version;
4035f4fc069Sjilinxpd 	int		devfd;
404*8329232eSGordon Ross 	zone_t		*zone = curzone;
405*8329232eSGordon Ross #ifdef	_KERNEL
4064bff34e3Sthurlow 	zone_t		*mntzone = NULL;
407*8329232eSGordon Ross #else	/* _KERNEL */
408*8329232eSGordon Ross 	short		minclsyspri = MINCLSYSPRI;
409*8329232eSGordon Ross #endif	/* _KERNEL */
4105f4fc069Sjilinxpd 	smb_share_t	*ssp = NULL;
4115f4fc069Sjilinxpd 	smb_cred_t	scred;
41202d09e03SGordon Ross 	int		flags, sec;
4134bff34e3Sthurlow 	STRUCT_DECL(smbfs_args, args);		/* smbfs mount arguments */
4144bff34e3Sthurlow 
415*8329232eSGordon Ross #ifdef	_KERNEL
4164bff34e3Sthurlow 	if ((error = secpolicy_fs_mount(cr, mvp, vfsp)) != 0)
4174bff34e3Sthurlow 		return (error);
418*8329232eSGordon Ross #endif	/* _KERNEL */
4194bff34e3Sthurlow 
4204bff34e3Sthurlow 	if (mvp->v_type != VDIR)
4214bff34e3Sthurlow 		return (ENOTDIR);
4224bff34e3Sthurlow 
4234bff34e3Sthurlow 	/*
4244bff34e3Sthurlow 	 * get arguments
4254bff34e3Sthurlow 	 *
4264bff34e3Sthurlow 	 * uap->datalen might be different from sizeof (args)
4274bff34e3Sthurlow 	 * in a compatible situation.
4284bff34e3Sthurlow 	 */
429*8329232eSGordon Ross #ifdef	_KERNEL
4304bff34e3Sthurlow 	STRUCT_INIT(args, get_udatamodel());
4314bff34e3Sthurlow 	bzero(STRUCT_BUF(args), SIZEOF_STRUCT(smbfs_args, DATAMODEL_NATIVE));
4324bff34e3Sthurlow 	if (copyin(data, STRUCT_BUF(args), MIN(uap->datalen,
4334bff34e3Sthurlow 	    SIZEOF_STRUCT(smbfs_args, DATAMODEL_NATIVE))))
4344bff34e3Sthurlow 		return (EFAULT);
435*8329232eSGordon Ross #else	/* _KERNEL */
436*8329232eSGordon Ross 	bzero(&args, sizeof (args));
437*8329232eSGordon Ross 	if (copyin(data, &args, MIN(uap->datalen, sizeof (args))))
438*8329232eSGordon Ross 		return (EFAULT);
439*8329232eSGordon Ross #endif	/* _KERNEL */
4404bff34e3Sthurlow 
4414bff34e3Sthurlow 	/*
4424bff34e3Sthurlow 	 * Check mount program version
4434bff34e3Sthurlow 	 */
4444bff34e3Sthurlow 	version = STRUCT_FGET(args, version);
4454bff34e3Sthurlow 	if (version != SMBFS_VERSION) {
4464bff34e3Sthurlow 		cmn_err(CE_WARN, "mount version mismatch:"
4474bff34e3Sthurlow 		    " kernel=%d, mount=%d\n",
4484bff34e3Sthurlow 		    SMBFS_VERSION, version);
4494bff34e3Sthurlow 		return (EINVAL);
4504bff34e3Sthurlow 	}
4514bff34e3Sthurlow 
45202d09e03SGordon Ross 	/*
45302d09e03SGordon Ross 	 * Deal with re-mount requests.
45402d09e03SGordon Ross 	 */
4554bff34e3Sthurlow 	if (uap->flags & MS_REMOUNT) {
4564bff34e3Sthurlow 		cmn_err(CE_WARN, "MS_REMOUNT not implemented");
4574bff34e3Sthurlow 		return (ENOTSUP);
4584bff34e3Sthurlow 	}
4594bff34e3Sthurlow 
4604bff34e3Sthurlow 	/*
4614bff34e3Sthurlow 	 * Check for busy
4624bff34e3Sthurlow 	 */
4634bff34e3Sthurlow 	mutex_enter(&mvp->v_lock);
4644bff34e3Sthurlow 	if (!(uap->flags & MS_OVERLAY) &&
4654bff34e3Sthurlow 	    (mvp->v_count != 1 || (mvp->v_flag & VROOT))) {
4664bff34e3Sthurlow 		mutex_exit(&mvp->v_lock);
4674bff34e3Sthurlow 		return (EBUSY);
4684bff34e3Sthurlow 	}
4694bff34e3Sthurlow 	mutex_exit(&mvp->v_lock);
4704bff34e3Sthurlow 
4714bff34e3Sthurlow 	/*
4724bff34e3Sthurlow 	 * Get the "share" from the netsmb driver (ssp).
4734bff34e3Sthurlow 	 * It is returned with a "ref" (hold) for us.
4744bff34e3Sthurlow 	 * Release this hold: at errout below, or in
4754bff34e3Sthurlow 	 * smbfs_freevfs().
4764bff34e3Sthurlow 	 */
4774bff34e3Sthurlow 	devfd = STRUCT_FGET(args, devfd);
4784bff34e3Sthurlow 	error = smb_dev2share(devfd, &ssp);
4794bff34e3Sthurlow 	if (error) {
4804bff34e3Sthurlow 		cmn_err(CE_WARN, "invalid device handle %d (%d)\n",
4814bff34e3Sthurlow 		    devfd, error);
4824bff34e3Sthurlow 		return (error);
4834bff34e3Sthurlow 	}
4844bff34e3Sthurlow 
4854bff34e3Sthurlow 	/*
4864bff34e3Sthurlow 	 * Use "goto errout" from here on.
48702d09e03SGordon Ross 	 * See: ssp, smi, rtnp, mntzone
4884bff34e3Sthurlow 	 */
4894bff34e3Sthurlow 
490*8329232eSGordon Ross #ifdef	_KERNEL
4914bff34e3Sthurlow 	/*
4924bff34e3Sthurlow 	 * Determine the zone we're being mounted into.
4934bff34e3Sthurlow 	 */
4944bff34e3Sthurlow 	zone_hold(mntzone = zone);		/* start with this assumption */
4954bff34e3Sthurlow 	if (getzoneid() == GLOBAL_ZONEID) {
4964bff34e3Sthurlow 		zone_rele(mntzone);
4974bff34e3Sthurlow 		mntzone = zone_find_by_path(refstr_value(vfsp->vfs_mntpt));
4984bff34e3Sthurlow 		ASSERT(mntzone != NULL);
4994bff34e3Sthurlow 		if (mntzone != zone) {
5004bff34e3Sthurlow 			error = EBUSY;
5014bff34e3Sthurlow 			goto errout;
5024bff34e3Sthurlow 		}
5034bff34e3Sthurlow 	}
5044bff34e3Sthurlow 
5054bff34e3Sthurlow 	/*
5064bff34e3Sthurlow 	 * Stop the mount from going any further if the zone is going away.
5074bff34e3Sthurlow 	 */
5084bff34e3Sthurlow 	if (zone_status_get(mntzone) >= ZONE_IS_SHUTTING_DOWN) {
5094bff34e3Sthurlow 		error = EBUSY;
5104bff34e3Sthurlow 		goto errout;
5114bff34e3Sthurlow 	}
5124bff34e3Sthurlow 
5134bff34e3Sthurlow 	/*
5144bff34e3Sthurlow 	 * On a Trusted Extensions client, we may have to force read-only
5154bff34e3Sthurlow 	 * for read-down mounts.
5164bff34e3Sthurlow 	 */
5174bff34e3Sthurlow 	if (is_system_labeled()) {
5184bff34e3Sthurlow 		void *addr;
5194bff34e3Sthurlow 		int ipvers = 0;
5204bff34e3Sthurlow 		struct smb_vc *vcp;
5214bff34e3Sthurlow 
5224bff34e3Sthurlow 		vcp = SSTOVC(ssp);
5234bff34e3Sthurlow 		addr = smb_vc_getipaddr(vcp, &ipvers);
5244bff34e3Sthurlow 		error = smbfs_mount_label_policy(vfsp, addr, ipvers, cr);
5254bff34e3Sthurlow 
5264bff34e3Sthurlow 		if (error > 0)
5274bff34e3Sthurlow 			goto errout;
5284bff34e3Sthurlow 
5294bff34e3Sthurlow 		if (error == -1) {
5304bff34e3Sthurlow 			/* change mount to read-only to prevent write-down */
5314bff34e3Sthurlow 			vfs_setmntopt(vfsp, MNTOPT_RO, NULL, 0);
5324bff34e3Sthurlow 		}
5334bff34e3Sthurlow 	}
534*8329232eSGordon Ross #endif	/* _KERNEL */
5354bff34e3Sthurlow 
53602d09e03SGordon Ross 	/* Prevent unload. */
53702d09e03SGordon Ross 	atomic_inc_32(&smbfs_mountcount);
5384bff34e3Sthurlow 
5394bff34e3Sthurlow 	/*
5404bff34e3Sthurlow 	 * Create a mount record and link it to the vfs struct.
54102d09e03SGordon Ross 	 * No more possiblities for errors from here on.
54202d09e03SGordon Ross 	 * Tear-down of this stuff is in smbfs_free_smi()
54302d09e03SGordon Ross 	 *
5444bff34e3Sthurlow 	 * Compare with NFS: nfsrootvp()
5454bff34e3Sthurlow 	 */
54602d09e03SGordon Ross 	smi = kmem_zalloc(sizeof (*smi), KM_SLEEP);
54702d09e03SGordon Ross 
54802d09e03SGordon Ross 	mutex_init(&smi->smi_lock, NULL, MUTEX_DEFAULT, NULL);
54902d09e03SGordon Ross 	cv_init(&smi->smi_statvfs_cv, NULL, CV_DEFAULT, NULL);
5504bff34e3Sthurlow 
55102d09e03SGordon Ross 	rw_init(&smi->smi_hash_lk, NULL, RW_DEFAULT, NULL);
55202d09e03SGordon Ross 	smbfs_init_hash_avl(&smi->smi_hash_avl);
55302d09e03SGordon Ross 
55402d09e03SGordon Ross 	smi->smi_share = ssp;
55502d09e03SGordon Ross 	ssp = NULL;
556a19609f8Sjv 
557*8329232eSGordon Ross #ifdef	_KERNEL
558a19609f8Sjv 	/*
559a19609f8Sjv 	 * Convert the anonymous zone hold acquired via zone_hold() above
560a19609f8Sjv 	 * into a zone reference.
561a19609f8Sjv 	 */
562a19609f8Sjv 	zone_init_ref(&smi->smi_zone_ref);
563a19609f8Sjv 	zone_hold_ref(mntzone, &smi->smi_zone_ref, ZONE_REF_SMBFS);
564a19609f8Sjv 	zone_rele(mntzone);
56502d09e03SGordon Ross 	mntzone = NULL;
566*8329232eSGordon Ross #else	/* _KERNEL */
567*8329232eSGordon Ross 	smi->smi_zone_ref.zref_zone = curzone;
568*8329232eSGordon Ross #endif	/* _KERNEL */
56902d09e03SGordon Ross 
57002d09e03SGordon Ross 	/*
57102d09e03SGordon Ross 	 * Initialize option defaults
57202d09e03SGordon Ross 	 */
57302d09e03SGordon Ross 	smi->smi_acregmin = SEC2HR(SMBFS_ACREGMIN);
57402d09e03SGordon Ross 	smi->smi_acregmax = SEC2HR(SMBFS_ACREGMAX);
57502d09e03SGordon Ross 	smi->smi_acdirmin = SEC2HR(SMBFS_ACDIRMIN);
57602d09e03SGordon Ross 	smi->smi_acdirmax = SEC2HR(SMBFS_ACDIRMAX);
577*8329232eSGordon Ross 	smi->smi_flags	= SMI_LLOCK;
578*8329232eSGordon Ross #ifndef	_KERNEL
579*8329232eSGordon Ross 	/* Always direct IO with fakekernel */
580*8329232eSGordon Ross 	smi->smi_flags	|= SMI_DIRECTIO;
581*8329232eSGordon Ross #endif	/* _KERNEL */
58291d632c8Sgwr 
58391d632c8Sgwr 	/*
58402d09e03SGordon Ross 	 * All "generic" mount options have already been
58502d09e03SGordon Ross 	 * handled in vfs.c:domount() - see mntopts stuff.
58602d09e03SGordon Ross 	 * Query generic options using vfs_optionisset().
5879005860cSGordon Ross 	 * Give ACL an adjustable system-wide default.
58891d632c8Sgwr 	 */
5899005860cSGordon Ross 	if (smbfs_default_opt_acl ||
5909005860cSGordon Ross 	    vfs_optionisset(vfsp, MNTOPT_ACL, NULL))
5919005860cSGordon Ross 		smi->smi_flags |= SMI_ACL;
5929005860cSGordon Ross 	if (vfs_optionisset(vfsp, MNTOPT_NOACL, NULL))
5939005860cSGordon Ross 		smi->smi_flags &= ~SMI_ACL;
59491d632c8Sgwr 	if (vfs_optionisset(vfsp, MNTOPT_INTR, NULL))
59591d632c8Sgwr 		smi->smi_flags |= SMI_INT;
5964bff34e3Sthurlow 
5974bff34e3Sthurlow 	/*
59802d09e03SGordon Ross 	 * Get the mount options that come in as smbfs_args,
59902d09e03SGordon Ross 	 * starting with args.flags (SMBFS_MF_xxx)
60002d09e03SGordon Ross 	 */
60102d09e03SGordon Ross 	flags = STRUCT_FGET(args, flags);
60202d09e03SGordon Ross 	smi->smi_fmode	= STRUCT_FGET(args, file_mode) & 0777;
60302d09e03SGordon Ross 	smi->smi_dmode	= STRUCT_FGET(args, dir_mode) & 0777;
604*8329232eSGordon Ross #ifdef	_KERNEL
605*8329232eSGordon Ross 	smi->smi_uid	= STRUCT_FGET(args, uid);
606*8329232eSGordon Ross 	smi->smi_gid	= STRUCT_FGET(args, gid);
607*8329232eSGordon Ross #else	/* _KERNEL */
608*8329232eSGordon Ross 	/*
609*8329232eSGordon Ross 	 * Need uid/gid to match our fake cred we'll fail in
610*8329232eSGordon Ross 	 * smbfs_access_rwx later.
611*8329232eSGordon Ross 	 */
612*8329232eSGordon Ross 	smi->smi_uid	= crgetuid(cr);
613*8329232eSGordon Ross 	smi->smi_gid	= crgetgid(cr);
614*8329232eSGordon Ross 
615*8329232eSGordon Ross 	/*
616*8329232eSGordon Ross 	 * Our user-level do_mount() passes the mount options sting
617*8329232eSGordon Ross 	 * as-is, where the real mount program would convert some
618*8329232eSGordon Ross 	 * of those options to bits set in smbfs_args.flags.
619*8329232eSGordon Ross 	 * To avoid replicating all that conversion code, this
620*8329232eSGordon Ross 	 * uses the generic vfs option support to handle those
621*8329232eSGordon Ross 	 * option flag bits we need, i.e.: "noac"
622*8329232eSGordon Ross 	 */
623*8329232eSGordon Ross 	if (vfs_optionisset(vfsp, MNTOPT_NOAC, NULL))
624*8329232eSGordon Ross 		flags |= SMBFS_MF_NOAC;
625*8329232eSGordon Ross #endif	/* _KERNEL */
62602d09e03SGordon Ross 
62702d09e03SGordon Ross 	/*
62802d09e03SGordon Ross 	 * Hande the SMBFS_MF_xxx flags.
6294bff34e3Sthurlow 	 */
63002d09e03SGordon Ross 	if (flags & SMBFS_MF_NOAC)
63102d09e03SGordon Ross 		smi->smi_flags |= SMI_NOAC;
63202d09e03SGordon Ross 	if (flags & SMBFS_MF_ACREGMIN) {
63302d09e03SGordon Ross 		sec = STRUCT_FGET(args, acregmin);
63402d09e03SGordon Ross 		if (sec < 0 || sec > SMBFS_ACMINMAX)
63502d09e03SGordon Ross 			sec = SMBFS_ACMINMAX;
63602d09e03SGordon Ross 		smi->smi_acregmin = SEC2HR(sec);
63702d09e03SGordon Ross 	}
63802d09e03SGordon Ross 	if (flags & SMBFS_MF_ACREGMAX) {
63902d09e03SGordon Ross 		sec = STRUCT_FGET(args, acregmax);
64002d09e03SGordon Ross 		if (sec < 0 || sec > SMBFS_ACMAXMAX)
64102d09e03SGordon Ross 			sec = SMBFS_ACMAXMAX;
64202d09e03SGordon Ross 		smi->smi_acregmax = SEC2HR(sec);
64302d09e03SGordon Ross 	}
64402d09e03SGordon Ross 	if (flags & SMBFS_MF_ACDIRMIN) {
64502d09e03SGordon Ross 		sec = STRUCT_FGET(args, acdirmin);
64602d09e03SGordon Ross 		if (sec < 0 || sec > SMBFS_ACMINMAX)
64702d09e03SGordon Ross 			sec = SMBFS_ACMINMAX;
64802d09e03SGordon Ross 		smi->smi_acdirmin = SEC2HR(sec);
64902d09e03SGordon Ross 	}
65002d09e03SGordon Ross 	if (flags & SMBFS_MF_ACDIRMAX) {
65102d09e03SGordon Ross 		sec = STRUCT_FGET(args, acdirmax);
65202d09e03SGordon Ross 		if (sec < 0 || sec > SMBFS_ACMAXMAX)
65302d09e03SGordon Ross 			sec = SMBFS_ACMAXMAX;
65402d09e03SGordon Ross 		smi->smi_acdirmax = SEC2HR(sec);
65502d09e03SGordon Ross 	}
6564bff34e3Sthurlow 
65791d632c8Sgwr 	/*
65891d632c8Sgwr 	 * Get attributes of the remote file system,
65991d632c8Sgwr 	 * i.e. ACL support, named streams, etc.
66091d632c8Sgwr 	 */
66102d09e03SGordon Ross 	smb_credinit(&scred, cr);
66202d09e03SGordon Ross 	error = smbfs_smb_qfsattr(smi->smi_share, &smi->smi_fsa, &scred);
66302d09e03SGordon Ross 	smb_credrele(&scred);
6644bff34e3Sthurlow 	if (error) {
6654bff34e3Sthurlow 		SMBVDEBUG("smbfs_smb_qfsattr error %d\n", error);
6664bff34e3Sthurlow 	}
6674bff34e3Sthurlow 
66891d632c8Sgwr 	/*
66991d632c8Sgwr 	 * We enable XATTR by default (via smbfs_mntopts)
67091d632c8Sgwr 	 * but if the share does not support named streams,
67191d632c8Sgwr 	 * force the NOXATTR option (also clears XATTR).
67291d632c8Sgwr 	 * Caller will set or clear VFS_XATTR after this.
67391d632c8Sgwr 	 */
67491d632c8Sgwr 	if ((smi->smi_fsattr & FILE_NAMED_STREAMS) == 0)
67591d632c8Sgwr 		vfs_setmntopt(vfsp, MNTOPT_NOXATTR, NULL, 0);
6764bff34e3Sthurlow 
677bd7c6f51SGordon Ross 	/*
678bd7c6f51SGordon Ross 	 * Ditto ACLs (disable if not supported on this share)
679bd7c6f51SGordon Ross 	 */
680bd7c6f51SGordon Ross 	if ((smi->smi_fsattr & FILE_PERSISTENT_ACLS) == 0) {
681bd7c6f51SGordon Ross 		vfs_setmntopt(vfsp, MNTOPT_NOACL, NULL, 0);
682bd7c6f51SGordon Ross 		smi->smi_flags &= ~SMI_ACL;
683bd7c6f51SGordon Ross 	}
684bd7c6f51SGordon Ross 
6854bff34e3Sthurlow 	/*
6864bff34e3Sthurlow 	 * Assign a unique device id to the mount
6874bff34e3Sthurlow 	 */
6884bff34e3Sthurlow 	mutex_enter(&smbfs_minor_lock);
6894bff34e3Sthurlow 	do {
6904bff34e3Sthurlow 		smbfs_minor = (smbfs_minor + 1) & MAXMIN32;
6914bff34e3Sthurlow 		smbfs_dev = makedevice(smbfs_major, smbfs_minor);
6924bff34e3Sthurlow 	} while (vfs_devismounted(smbfs_dev));
6934bff34e3Sthurlow 	mutex_exit(&smbfs_minor_lock);
6944bff34e3Sthurlow 
6954bff34e3Sthurlow 	vfsp->vfs_dev	= smbfs_dev;
696*8329232eSGordon Ross 	vfs_make_fsid(&vfsp->vfs_fsid, smbfs_dev, smbfs_fstyp);
6974bff34e3Sthurlow 	vfsp->vfs_data	= (caddr_t)smi;
698*8329232eSGordon Ross 	vfsp->vfs_fstype = smbfs_fstyp;
6994bff34e3Sthurlow 	vfsp->vfs_bsize = MAXBSIZE;
7004bff34e3Sthurlow 	vfsp->vfs_bcount = 0;
7014bff34e3Sthurlow 
7024bff34e3Sthurlow 	smi->smi_vfsp	= vfsp;
70302d09e03SGordon Ross 	smbfs_zonelist_add(smi);	/* undo in smbfs_freevfs */
7044bff34e3Sthurlow 
70528162916SGordon Ross 	/* PSARC 2007/227 VFS Feature Registration */
70628162916SGordon Ross 	vfs_set_feature(vfsp, VFSFT_XVATTR);
70728162916SGordon Ross 	vfs_set_feature(vfsp, VFSFT_SYSATTR_VIEWS);
70828162916SGordon Ross 
7094bff34e3Sthurlow 	/*
7104bff34e3Sthurlow 	 * Create the root vnode, which we need in unmount
71102d09e03SGordon Ross 	 * for the call to smbfs_check_table(), etc.
71202d09e03SGordon Ross 	 * Release this hold in smbfs_unmount.
7134bff34e3Sthurlow 	 */
71402d09e03SGordon Ross 	rtnp = smbfs_node_findcreate(smi, "\\", 1, NULL, 0, 0,
71502d09e03SGordon Ross 	    &smbfs_fattr0);
71602d09e03SGordon Ross 	ASSERT(rtnp != NULL);
71702d09e03SGordon Ross 	rtnp->r_vnode->v_type = VDIR;
71802d09e03SGordon Ross 	rtnp->r_vnode->v_flag |= VROOT;
71902d09e03SGordon Ross 	smi->smi_root = rtnp;
7204bff34e3Sthurlow 
7214e72ade1SGordon Ross 	/*
7224e72ade1SGordon Ross 	 * Create a taskq for async work (i.e. putpage)
7234e72ade1SGordon Ross 	 */
7244e72ade1SGordon Ross 	smi->smi_taskq = taskq_create_proc("smbfs",
7254e72ade1SGordon Ross 	    smbfs_tq_nthread, minclsyspri,
7264e72ade1SGordon Ross 	    smbfs_tq_nthread, smbfs_tq_nthread * 2,
7274e72ade1SGordon Ross 	    zone->zone_zsched, TASKQ_PREPOPULATE);
7284e72ade1SGordon Ross 
7294bff34e3Sthurlow 	/*
7304bff34e3Sthurlow 	 * NFS does other stuff here too:
7314bff34e3Sthurlow 	 *   async worker threads
7324bff34e3Sthurlow 	 *   init kstats
7334bff34e3Sthurlow 	 *
7344bff34e3Sthurlow 	 * End of code from NFS nfsrootvp()
7354bff34e3Sthurlow 	 */
7364bff34e3Sthurlow 	return (0);
7374bff34e3Sthurlow 
738*8329232eSGordon Ross #ifdef	_KERNEL
7394bff34e3Sthurlow errout:
7404bff34e3Sthurlow 	vfsp->vfs_data = NULL;
74102d09e03SGordon Ross 	if (smi != NULL)
7424bff34e3Sthurlow 		smbfs_free_smi(smi);
7434bff34e3Sthurlow 
7444bff34e3Sthurlow 	if (mntzone != NULL)
7454bff34e3Sthurlow 		zone_rele(mntzone);
7464bff34e3Sthurlow 
74702d09e03SGordon Ross 	if (ssp != NULL)
7484bff34e3Sthurlow 		smb_share_rele(ssp);
7494bff34e3Sthurlow 
7504bff34e3Sthurlow 	return (error);
751*8329232eSGordon Ross #endif	/* _KERNEL */
7524bff34e3Sthurlow }
7534bff34e3Sthurlow 
7544bff34e3Sthurlow /*
7554bff34e3Sthurlow  * vfs operations
7564bff34e3Sthurlow  */
7574bff34e3Sthurlow static int
smbfs_unmount(vfs_t * vfsp,int flag,cred_t * cr)7584bff34e3Sthurlow smbfs_unmount(vfs_t *vfsp, int flag, cred_t *cr)
7594bff34e3Sthurlow {
7604bff34e3Sthurlow 	smbmntinfo_t	*smi;
7614bff34e3Sthurlow 	smbnode_t	*rtnp;
7624bff34e3Sthurlow 
7634bff34e3Sthurlow 	smi = VFTOSMI(vfsp);
7644bff34e3Sthurlow 
765*8329232eSGordon Ross #ifdef	_KERNEL
7664bff34e3Sthurlow 	if (secpolicy_fs_unmount(cr, vfsp) != 0)
7674bff34e3Sthurlow 		return (EPERM);
768*8329232eSGordon Ross #endif	/* _KERNEL */
7694bff34e3Sthurlow 
7704bff34e3Sthurlow 	if ((flag & MS_FORCE) == 0) {
7714bff34e3Sthurlow 		smbfs_rflush(vfsp, cr);
7724bff34e3Sthurlow 
7734bff34e3Sthurlow 		/*
7744bff34e3Sthurlow 		 * If there are any active vnodes on this file system,
7754bff34e3Sthurlow 		 * (other than the root vnode) then the file system is
7764bff34e3Sthurlow 		 * busy and can't be umounted.
7774bff34e3Sthurlow 		 */
77802d09e03SGordon Ross 		if (smbfs_check_table(vfsp, smi->smi_root))
7794bff34e3Sthurlow 			return (EBUSY);
7804bff34e3Sthurlow 
7814bff34e3Sthurlow 		/*
7824bff34e3Sthurlow 		 * We normally hold a ref to the root vnode, so
7834bff34e3Sthurlow 		 * check for references beyond the one we expect:
7844bff34e3Sthurlow 		 *   smbmntinfo_t -> smi_root
7854bff34e3Sthurlow 		 * Note that NFS does not hold the root vnode.
7864bff34e3Sthurlow 		 */
7874bff34e3Sthurlow 		if (smi->smi_root &&
7884bff34e3Sthurlow 		    smi->smi_root->r_vnode->v_count > 1)
7894bff34e3Sthurlow 			return (EBUSY);
7904bff34e3Sthurlow 	}
7914bff34e3Sthurlow 
7924bff34e3Sthurlow 	/*
7934bff34e3Sthurlow 	 * common code for both forced and non-forced
7944bff34e3Sthurlow 	 *
7954bff34e3Sthurlow 	 * Setting VFS_UNMOUNTED prevents new operations.
7964bff34e3Sthurlow 	 * Operations already underway may continue,
7974bff34e3Sthurlow 	 * but not for long.
7984bff34e3Sthurlow 	 */
7994bff34e3Sthurlow 	vfsp->vfs_flag |= VFS_UNMOUNTED;
8004bff34e3Sthurlow 
8014bff34e3Sthurlow 	/*
8024bff34e3Sthurlow 	 * If we hold the root VP (and we normally do)
8034bff34e3Sthurlow 	 * then it's safe to release it now.
8044bff34e3Sthurlow 	 */
8054bff34e3Sthurlow 	if (smi->smi_root) {
8064bff34e3Sthurlow 		rtnp = smi->smi_root;
8074bff34e3Sthurlow 		smi->smi_root = NULL;
808