[apple/xnu.git] / bsd / miscfs / devfs / devfs_vfsops.c

/*
 * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*-
 * Copyright 1997,1998 Julian Elischer.  All rights reserved.
 * julian@freebsd.org
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * devfs_vfsops.c
 *
 */
/*
 * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
 * support for mandatory and extensible security protections.  This notice
 * is included in support of clause 2.2 (b) of the Apple Public License,
 * Version 2.0.
 */
/*
 * HISTORY
 *  Dieter Siegmund (dieter@apple.com) Wed Jul 14 13:37:59 PDT 1999
 *  - modified devfs_statfs() to use devfs_stats to calculate the
 *    amount of memory used by devfs
 */


#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/vnode_internal.h>
#include <sys/proc.h>
#include <sys/kauth.h>
#include <sys/mount_internal.h>
#include <sys/malloc.h>
#include <sys/conf.h>
#include <libkern/OSAtomic.h>
#include <atm/atm_internal.h>

#if CONFIG_MACF
#include <security/mac_framework.h>
#endif

#include "devfs.h"
#include "devfsdefs.h"

#if FDESC
#include "fdesc.h"
#endif /* FDESC */


static int devfs_statfs( struct mount *mp, struct vfsstatfs *sbp, vfs_context_t ctx);
static int devfs_vfs_getattr(mount_t mp, struct vfs_attr *fsap, vfs_context_t ctx);

#if CONFIG_DEV_KMEM
extern boolean_t dev_kmem_enabled;
#endif

/*-
 * Called from the generic VFS startups.
 * This is the second stage of DEVFS initialisation.
 * The probed devices have already been loaded and the 
 * basic structure of the DEVFS created.
 * We take the oportunity to mount the hidden DEVFS layer, so that
 * devices from devfs get sync'd.
 */
static int
devfs_init(__unused struct vfsconf *vfsp)
{
	if (devfs_sinit())
		return (ENOTSUP);
	devfs_make_node(makedev(0, 0), DEVFS_CHAR, 
					UID_ROOT, GID_WHEEL, 0622, "console");
	devfs_make_node(makedev(2, 0), DEVFS_CHAR, 
					UID_ROOT, GID_WHEEL, 0666, "tty");
#if CONFIG_DEV_KMEM
	if (dev_kmem_enabled) {
		/* (3,0) reserved for /dev/mem physical memory */
		devfs_make_node(makedev(3, 1), DEVFS_CHAR, 
						UID_ROOT, GID_KMEM, 0640, "kmem");
	}
#endif
	devfs_make_node(makedev(3, 2), DEVFS_CHAR, 
					UID_ROOT, GID_WHEEL, 0666, "null");
	devfs_make_node(makedev(3, 3), DEVFS_CHAR, 
					UID_ROOT, GID_WHEEL, 0666, "zero");
	uint32_t logging_config = atm_get_diagnostic_config();

	devfs_make_node(makedev(6, 0), DEVFS_CHAR,
					UID_ROOT, GID_WHEEL, 0600, "klog");

	if ( !(logging_config & ATM_TRACE_DISABLE) ) {
		devfs_make_node(makedev(7, 0), DEVFS_CHAR,
					UID_ROOT, GID_WHEEL, 0600, "oslog");
		if (cdevsw_setkqueueok(7, (&(cdevsw[7])), 0) == -1) {
			return (ENOTSUP);
		}

		devfs_make_node(makedev(8, 0), DEVFS_CHAR,
					UID_ROOT, GID_WHEEL, 0600, "oslog_stream");
		if (cdevsw_setkqueueok(8, (&(cdevsw[8])), 0) == -1) {
			return (ENOTSUP);
		}
	}


#if  FDESC
	devfs_fdesc_init();
#endif

    return 0;
}

/*-
 *  mp	 - pointer to 'mount' structure
 *  path - addr in user space of mount point (ie /usr or whatever)
 *  data - addr in user space of mount params including the
 *         name of the block special file to treat as a filesystem.
 *         (NOT USED)
 *  ndp  - namei data pointer (NOT USED)
 *  p    - proc pointer
 * devfs is special in that it doesn't require any device to be mounted..
 * It makes up its data as it goes along.
 * it must be mounted during single user.. until it is, only std{in/out/err}
 * and the root filesystem are available.
 */
/*proto*/
int
devfs_mount(struct mount *mp, __unused vnode_t devvp, __unused user_addr_t data, vfs_context_t ctx)
{
	struct devfsmount *devfs_mp_p;	/* devfs specific mount info */
	int error;

	/*-
	 *  If they just want to update, we don't need to do anything.
	 */
	if (mp->mnt_flag & MNT_UPDATE)
	{
		return 0;
	}

	/* Advisory locking should be handled at the VFS layer */
	vfs_setlocklocal(mp);

	/*-
	 *  Well, it's not an update, it's a real mount request.
	 *  Time to get dirty.
	 * HERE we should check to see if we are already mounted here.
	 */

	MALLOC(devfs_mp_p, struct devfsmount *, sizeof(struct devfsmount),
	       M_DEVFSMNT, M_WAITOK);
	if (devfs_mp_p == NULL)
		return (ENOMEM);
	bzero(devfs_mp_p,sizeof(*devfs_mp_p));
	devfs_mp_p->mount = mp;

	/*-
	 *  Fill out some fields
	 */
	__IGNORE_WCASTALIGN(mp->mnt_data = (qaddr_t)devfs_mp_p);
	mp->mnt_vfsstat.f_fsid.val[0] = (int32_t)(uintptr_t)devfs_mp_p;
	mp->mnt_vfsstat.f_fsid.val[1] = vfs_typenum(mp);
	mp->mnt_flag |= MNT_LOCAL;

	DEVFS_LOCK();
	error = dev_dup_plane(devfs_mp_p);
	DEVFS_UNLOCK();

	if (error) {
		mp->mnt_data = (qaddr_t)0;
		FREE((caddr_t)devfs_mp_p, M_DEVFSMNT);
		return (error);
	} else
	        DEVFS_INCR_MOUNTS();

	/*-
	 *  Copy in the name of the directory the filesystem
	 *  is to be mounted on.
	 *  And we clear the remainder of the character strings
	 *  to be tidy.
	 */
	
	bzero(mp->mnt_vfsstat.f_mntfromname, MAXPATHLEN);
	bcopy("devfs",mp->mnt_vfsstat.f_mntfromname, 5);
	(void)devfs_statfs(mp, &mp->mnt_vfsstat, ctx);

	return 0;
}


static int
devfs_start(__unused struct mount *mp, __unused int flags, __unused vfs_context_t ctx)
{
	return 0;
}

/*-
 *  Unmount the filesystem described by mp.
 */
static int
devfs_unmount( struct mount *mp, int mntflags, __unused vfs_context_t ctx)
{
	struct devfsmount *devfs_mp_p = (struct devfsmount *)mp->mnt_data;
	int flags = 0;
	int force = 0;
	int error;
	
	if (mntflags & MNT_FORCE) {
		flags |= FORCECLOSE;
		force = 1;
	}
	error = vflush(mp, NULLVP, flags);
	if (error && !force)
		return error;

	DEVFS_LOCK();
	devfs_free_plane(devfs_mp_p);
	DEVFS_UNLOCK();

	DEVFS_DECR_MOUNTS();

	FREE((caddr_t)devfs_mp_p, M_DEVFSMNT);
	mp->mnt_data = (qaddr_t)0;
	mp->mnt_flag &= ~MNT_LOCAL;

	return 0;
}

/* return the address of the root vnode  in *vpp */
static int
devfs_root(struct mount *mp, struct vnode **vpp, __unused vfs_context_t ctx)
{
	struct devfsmount *devfs_mp_p = (struct devfsmount *)(mp->mnt_data);
	int error;

	DEVFS_LOCK();
	/* last parameter to devfs_dntovn() is ignored */
	error = devfs_dntovn(devfs_mp_p->plane_root->de_dnp, vpp, NULL);
	DEVFS_UNLOCK();

	return error;
}

static int
devfs_statfs( struct mount *mp, struct vfsstatfs *sbp, __unused vfs_context_t ctx)
{
	struct devfsmount *devfs_mp_p = (struct devfsmount *)mp->mnt_data;

	/*-
	 *  Fill in the stat block.
	 */
	//sbp->f_type   = mp->mnt_vfsstat.f_type;
	sbp->f_flags  = 0;		/* XXX */
	sbp->f_bsize  = 512;
	sbp->f_iosize = 512;
	sbp->f_blocks = (devfs_stats.mounts * sizeof(struct devfsmount)
			 + devfs_stats.nodes * sizeof(devnode_t)
			 + devfs_stats.entries * sizeof(devdirent_t)
			 + devfs_stats.stringspace
			 ) / sbp->f_bsize;
	sbp->f_bfree  = 0;
	sbp->f_bavail = 0;
	sbp->f_files  = devfs_stats.nodes;
	sbp->f_ffree  = 0;
	sbp->f_fsid.val[0] = (int32_t)(uintptr_t)devfs_mp_p;
	sbp->f_fsid.val[1] = vfs_typenum(mp);

	return 0;
}

static int
devfs_vfs_getattr(__unused mount_t mp, struct vfs_attr *fsap, __unused vfs_context_t ctx)
{
	VFSATTR_RETURN(fsap, f_objcount, devfs_stats.nodes);
	VFSATTR_RETURN(fsap, f_maxobjcount, devfs_stats.nodes);
	VFSATTR_RETURN(fsap, f_bsize, 512);
	VFSATTR_RETURN(fsap, f_iosize, 512);
	if (VFSATTR_IS_ACTIVE(fsap, f_blocks) || VFSATTR_IS_ACTIVE(fsap, f_bused)) {
		fsap->f_blocks = (devfs_stats.mounts * sizeof(struct devfsmount)
			 + devfs_stats.nodes * sizeof(devnode_t)
			 + devfs_stats.entries * sizeof(devdirent_t)
			 + devfs_stats.stringspace
			 ) / fsap->f_bsize;
		fsap->f_bused = fsap->f_blocks;
		VFSATTR_SET_SUPPORTED(fsap, f_blocks);
		VFSATTR_SET_SUPPORTED(fsap, f_bused);
	}
	VFSATTR_RETURN(fsap, f_bfree, 0);
	VFSATTR_RETURN(fsap, f_bavail, 0);
	VFSATTR_RETURN(fsap, f_files, devfs_stats.nodes);
	VFSATTR_RETURN(fsap, f_ffree, 0);
	VFSATTR_RETURN(fsap, f_fssubtype, 0);
	
	if (VFSATTR_IS_ACTIVE(fsap, f_capabilities)) {
		fsap->f_capabilities.capabilities[VOL_CAPABILITIES_FORMAT] =
			VOL_CAP_FMT_SYMBOLICLINKS |
			VOL_CAP_FMT_HARDLINKS |
			VOL_CAP_FMT_NO_ROOT_TIMES |
			VOL_CAP_FMT_CASE_SENSITIVE |
			VOL_CAP_FMT_CASE_PRESERVING |
			VOL_CAP_FMT_FAST_STATFS |
			VOL_CAP_FMT_2TB_FILESIZE |
			VOL_CAP_FMT_HIDDEN_FILES;
		fsap->f_capabilities.capabilities[VOL_CAPABILITIES_INTERFACES] =
			VOL_CAP_INT_ATTRLIST ;
		fsap->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED1] = 0;
		fsap->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED2] = 0;
		
		fsap->f_capabilities.valid[VOL_CAPABILITIES_FORMAT] =
			VOL_CAP_FMT_PERSISTENTOBJECTIDS |
			VOL_CAP_FMT_SYMBOLICLINKS |
			VOL_CAP_FMT_HARDLINKS |
			VOL_CAP_FMT_JOURNAL |
			VOL_CAP_FMT_JOURNAL_ACTIVE |
			VOL_CAP_FMT_NO_ROOT_TIMES |
			VOL_CAP_FMT_SPARSE_FILES |
			VOL_CAP_FMT_ZERO_RUNS |
			VOL_CAP_FMT_CASE_SENSITIVE |
			VOL_CAP_FMT_CASE_PRESERVING |
			VOL_CAP_FMT_FAST_STATFS |
			VOL_CAP_FMT_2TB_FILESIZE |
			VOL_CAP_FMT_OPENDENYMODES |
			VOL_CAP_FMT_HIDDEN_FILES |
			VOL_CAP_FMT_PATH_FROM_ID |
			VOL_CAP_FMT_NO_VOLUME_SIZES;
		fsap->f_capabilities.valid[VOL_CAPABILITIES_INTERFACES] =
			VOL_CAP_INT_SEARCHFS |
			VOL_CAP_INT_ATTRLIST |
			VOL_CAP_INT_NFSEXPORT |
			VOL_CAP_INT_READDIRATTR |
			VOL_CAP_INT_EXCHANGEDATA |
			VOL_CAP_INT_COPYFILE |
			VOL_CAP_INT_ALLOCATE |
			VOL_CAP_INT_VOL_RENAME |
			VOL_CAP_INT_ADVLOCK |
			VOL_CAP_INT_FLOCK |
			VOL_CAP_INT_EXTENDED_SECURITY |
			VOL_CAP_INT_USERACCESS |
			VOL_CAP_INT_MANLOCK |
			VOL_CAP_INT_EXTENDED_ATTR |
			VOL_CAP_INT_NAMEDSTREAMS;
		fsap->f_capabilities.valid[VOL_CAPABILITIES_RESERVED1] = 0;
		fsap->f_capabilities.valid[VOL_CAPABILITIES_RESERVED2] = 0;
		
		VFSATTR_SET_SUPPORTED(fsap, f_capabilities);
	}
	
	if (VFSATTR_IS_ACTIVE(fsap, f_attributes)) {
		fsap->f_attributes.validattr.commonattr =
			ATTR_CMN_NAME | ATTR_CMN_DEVID | ATTR_CMN_FSID |
			ATTR_CMN_OBJTYPE | ATTR_CMN_OBJTAG | ATTR_CMN_OBJID |
			ATTR_CMN_PAROBJID |
			ATTR_CMN_MODTIME | ATTR_CMN_CHGTIME | ATTR_CMN_ACCTIME |
			ATTR_CMN_OWNERID | ATTR_CMN_GRPID | ATTR_CMN_ACCESSMASK |
			ATTR_CMN_FLAGS | ATTR_CMN_USERACCESS | ATTR_CMN_FILEID;
		fsap->f_attributes.validattr.volattr =
			ATTR_VOL_FSTYPE | ATTR_VOL_SIZE | ATTR_VOL_SPACEFREE |
			ATTR_VOL_SPACEAVAIL | ATTR_VOL_MINALLOCATION |
			ATTR_VOL_OBJCOUNT | ATTR_VOL_MAXOBJCOUNT |
			ATTR_VOL_MOUNTPOINT | ATTR_VOL_MOUNTFLAGS |
			ATTR_VOL_MOUNTEDDEVICE | ATTR_VOL_CAPABILITIES |
			ATTR_VOL_ATTRIBUTES;
		fsap->f_attributes.validattr.dirattr =
			ATTR_DIR_LINKCOUNT | ATTR_DIR_MOUNTSTATUS;
		fsap->f_attributes.validattr.fileattr =
			ATTR_FILE_LINKCOUNT | ATTR_FILE_TOTALSIZE |
			ATTR_FILE_IOBLOCKSIZE | ATTR_FILE_DEVTYPE |
			ATTR_FILE_DATALENGTH;
		fsap->f_attributes.validattr.forkattr = 0;
		
		fsap->f_attributes.nativeattr.commonattr =
			ATTR_CMN_NAME | ATTR_CMN_DEVID | ATTR_CMN_FSID |
			ATTR_CMN_OBJTYPE | ATTR_CMN_OBJTAG | ATTR_CMN_OBJID |
			ATTR_CMN_PAROBJID |
			ATTR_CMN_MODTIME | ATTR_CMN_CHGTIME | ATTR_CMN_ACCTIME |
			ATTR_CMN_OWNERID | ATTR_CMN_GRPID | ATTR_CMN_ACCESSMASK |
			ATTR_CMN_FLAGS | ATTR_CMN_USERACCESS | ATTR_CMN_FILEID;
		fsap->f_attributes.nativeattr.volattr =
			ATTR_VOL_FSTYPE | ATTR_VOL_SIZE | ATTR_VOL_SPACEFREE |
			ATTR_VOL_SPACEAVAIL | ATTR_VOL_MINALLOCATION |
			ATTR_VOL_OBJCOUNT | ATTR_VOL_MAXOBJCOUNT |
			ATTR_VOL_MOUNTPOINT | ATTR_VOL_MOUNTFLAGS |
			ATTR_VOL_MOUNTEDDEVICE | ATTR_VOL_CAPABILITIES |
			ATTR_VOL_ATTRIBUTES;
		fsap->f_attributes.nativeattr.dirattr =
			ATTR_DIR_MOUNTSTATUS;
		fsap->f_attributes.nativeattr.fileattr =
			ATTR_FILE_LINKCOUNT | ATTR_FILE_TOTALSIZE |
			ATTR_FILE_IOBLOCKSIZE | ATTR_FILE_DEVTYPE |
			ATTR_FILE_DATALENGTH;
		fsap->f_attributes.nativeattr.forkattr = 0;

		VFSATTR_SET_SUPPORTED(fsap, f_attributes);
	}
	
	return 0;
}

static int
devfs_sync(__unused struct mount *mp, __unused int waitfor, __unused vfs_context_t ctx)
{
    return (0);
}


static int
devfs_vget(__unused struct mount *mp, __unused ino64_t ino, __unused struct vnode **vpp, __unused vfs_context_t ctx)
{
	return ENOTSUP;
}

/*************************************************************
 * The concept of exporting a kernel generated devfs is stupid
 * So don't handle filehandles
 */

static int
devfs_fhtovp (__unused struct mount *mp, __unused int fhlen, __unused unsigned char *fhp, __unused struct vnode **vpp, __unused vfs_context_t ctx)
{
	return (EINVAL);
}


static int
devfs_vptofh (__unused struct vnode *vp, __unused int *fhlenp, __unused unsigned char *fhp, __unused vfs_context_t ctx)
{
	return (EINVAL);
}

static int
devfs_sysctl(__unused int *name, __unused u_int namelen, __unused user_addr_t oldp, 
             __unused size_t *oldlenp, __unused user_addr_t newp, 
             __unused size_t newlen, __unused vfs_context_t ctx)
{
    return (ENOTSUP);
}

#include <sys/namei.h>

/*
 * Function: devfs_kernel_mount
 * Purpose:
 *   Mount devfs at the given mount point from within the kernel.
 */
int
devfs_kernel_mount(char * mntname)
{
	int error;
	vfs_context_t ctx = vfs_context_kernel();
	char fsname[] = "devfs";

	error = kernel_mount(fsname, NULLVP, NULLVP, mntname, NULL, 0, MNT_DONTBROWSE, KERNEL_MOUNT_NOAUTH, ctx);
	if (error) {
		printf("devfs_kernel_mount: kernel_mount failed: %d\n", error);
		return (error);
	}

	return (0);
}

struct vfsops devfs_vfsops = {
	.vfs_mount   = devfs_mount,
	.vfs_start   = devfs_start,
	.vfs_unmount = devfs_unmount,
	.vfs_root    = devfs_root,
	.vfs_getattr = devfs_vfs_getattr,
	.vfs_sync    = devfs_sync,
	.vfs_vget    = devfs_vget,
	.vfs_fhtovp  = devfs_fhtovp,
	.vfs_vptofh  = devfs_vptofh,
	.vfs_init    = devfs_init,
	.vfs_sysctl  = devfs_sysctl,
	// There are other VFS ops that we do not support
};
Commit	Line	Data
1c79356b	1	/*
6d2010ae	2	* Copyright (c) 2000-2010 Apple Inc. All rights reserved.
5d5c5d0d	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*-
	29	* Copyright 1997,1998 Julian Elischer. All rights reserved.
	30	* julian@freebsd.org
	31	*
	32	* Redistribution and use in source and binary forms, with or without
	33	* modification, are permitted provided that the following conditions are
	34	* met:
	35	* 1. Redistributions of source code must retain the above copyright
	36	* notice, this list of conditions and the following disclaimer.
	37	* 2. Redistributions in binary form must reproduce the above copyright notice,
	38	* this list of conditions and the following disclaimer in the documentation
	39	* and/or other materials provided with the distribution.
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ``AS IS'' AND ANY EXPRESS
	42	* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	43	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	44	* DISCLAIMED. IN NO EVENT SHALL THE HOLDER OR CONTRIBUTORS BE LIABLE FOR
	45	* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	47	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
	48	* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* devfs_vfsops.c
	54	*
	55	*/
2d21ac55 A	56	/*
	57	* NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
	58	* support for mandatory and extensible security protections. This notice
	59	* is included in support of clause 2.2 (b) of the Apple Public License,
	60	* Version 2.0.
	61	*/
1c79356b A	62	/*
	63	* HISTORY
	64	* Dieter Siegmund (dieter@apple.com) Wed Jul 14 13:37:59 PDT 1999
	65	* - modified devfs_statfs() to use devfs_stats to calculate the
	66	* amount of memory used by devfs
	67	*/
	68
	69
	70	#include <sys/param.h>
	71	#include <sys/systm.h>
	72	#include <sys/kernel.h>
91447636	73	#include <sys/vnode_internal.h>
1c79356b	74	#include <sys/proc.h>
91447636 A	75	#include <sys/kauth.h>
91447636 A	76	#include <sys/mount_internal.h>
1c79356b	77	#include <sys/malloc.h>
39037602	78	#include <sys/conf.h>
2d21ac55	79	#include <libkern/OSAtomic.h>
39037602	80	#include <atm/atm_internal.h>
2d21ac55 A	81
	82	#if CONFIG_MACF
	83	#include <security/mac_framework.h>
	84	#endif
	85
1c79356b A	86	#include "devfs.h"
	87	#include "devfsdefs.h"
	88
b0d623f7 A	89	#if FDESC
	90	#include "fdesc.h"
	91	#endif /* FDESC */
	92
	93
2d21ac55 A	94	static int devfs_statfs( struct mount mp, struct vfsstatfs sbp, vfs_context_t ctx);
2d21ac55 A	95	static int devfs_vfs_getattr(mount_t mp, struct vfs_attr *fsap, vfs_context_t ctx);
1c79356b	96
fe8ab488 A	97	#if CONFIG_DEV_KMEM
fe8ab488 A	98	extern boolean_t dev_kmem_enabled;
6d2010ae	99	#endif
1c79356b A	100
	101	/*-
	102	* Called from the generic VFS startups.
	103	* This is the second stage of DEVFS initialisation.
	104	* The probed devices have already been loaded and the
	105	* basic structure of the DEVFS created.
	106	* We take the oportunity to mount the hidden DEVFS layer, so that
	107	* devices from devfs get sync'd.
	108	*/
	109	static int
b0d623f7	110	devfs_init(__unused struct vfsconf *vfsp)
1c79356b	111	{
fe8ab488 A	112	if (devfs_sinit())
	113	return (ENOTSUP);
	114	devfs_make_node(makedev(0, 0), DEVFS_CHAR,
	115	UID_ROOT, GID_WHEEL, 0622, "console");
	116	devfs_make_node(makedev(2, 0), DEVFS_CHAR,
	117	UID_ROOT, GID_WHEEL, 0666, "tty");
	118	#if CONFIG_DEV_KMEM
	119	if (dev_kmem_enabled) {
	120	/* (3,0) reserved for /dev/mem physical memory */
	121	devfs_make_node(makedev(3, 1), DEVFS_CHAR,
	122	UID_ROOT, GID_KMEM, 0640, "kmem");
	123	}
6d2010ae	124	#endif
fe8ab488 A	125	devfs_make_node(makedev(3, 2), DEVFS_CHAR,
	126	UID_ROOT, GID_WHEEL, 0666, "null");
	127	devfs_make_node(makedev(3, 3), DEVFS_CHAR,
	128	UID_ROOT, GID_WHEEL, 0666, "zero");
39037602 A	129	uint32_t logging_config = atm_get_diagnostic_config();
39037602 A	130
cc8bc92a	131	devfs_make_node(makedev(6, 0), DEVFS_CHAR,
fe8ab488	132	UID_ROOT, GID_WHEEL, 0600, "klog");
39037602 A	133
	134	if ( !(logging_config & ATM_TRACE_DISABLE) ) {
	135	devfs_make_node(makedev(7, 0), DEVFS_CHAR,
	136	UID_ROOT, GID_WHEEL, 0600, "oslog");
	137	if (cdevsw_setkqueueok(7, (&(cdevsw[7])), 0) == -1) {
	138	return (ENOTSUP);
	139	}
	140
	141	devfs_make_node(makedev(8, 0), DEVFS_CHAR,
	142	UID_ROOT, GID_WHEEL, 0600, "oslog_stream");
	143	if (cdevsw_setkqueueok(8, (&(cdevsw[8])), 0) == -1) {
	144	return (ENOTSUP);
	145	}
	146	}
	147
b0d623f7 A	148
b0d623f7 A	149	#if FDESC
fe8ab488	150	devfs_fdesc_init();
b0d623f7 A	151	#endif
b0d623f7 A	152
1c79356b A	153	return 0;
	154	}
	155
	156	/*-
	157	* mp - pointer to 'mount' structure
	158	* path - addr in user space of mount point (ie /usr or whatever)
	159	* data - addr in user space of mount params including the
	160	* name of the block special file to treat as a filesystem.
	161	* (NOT USED)
	162	* ndp - namei data pointer (NOT USED)
	163	* p - proc pointer
	164	* devfs is special in that it doesn't require any device to be mounted..
	165	* It makes up its data as it goes along.
	166	* it must be mounted during single user.. until it is, only std{in/out/err}
	167	* and the root filesystem are available.
	168	*/
	169	/proto/
	170	int
2d21ac55	171	devfs_mount(struct mount *mp, __unused vnode_t devvp, __unused user_addr_t data, vfs_context_t ctx)
1c79356b A	172	{
	173	struct devfsmount devfs_mp_p; / devfs specific mount info */
	174	int error;
1c79356b A	175
	176	/*-
	177	* If they just want to update, we don't need to do anything.
	178	*/
	179	if (mp->mnt_flag & MNT_UPDATE)
	180	{
	181	return 0;
	182	}
	183
91447636 A	184	/* Advisory locking should be handled at the VFS layer */
	185	vfs_setlocklocal(mp);
	186
1c79356b A	187	/*-
	188	* Well, it's not an update, it's a real mount request.
	189	* Time to get dirty.
	190	* HERE we should check to see if we are already mounted here.
	191	*/
	192
	193	MALLOC(devfs_mp_p, struct devfsmount *, sizeof(struct devfsmount),
	194	M_DEVFSMNT, M_WAITOK);
	195	if (devfs_mp_p == NULL)
	196	return (ENOMEM);
	197	bzero(devfs_mp_p,sizeof(*devfs_mp_p));
	198	devfs_mp_p->mount = mp;
	199
	200	/*-
	201	* Fill out some fields
	202	*/
3e170ce0	203	__IGNORE_WCASTALIGN(mp->mnt_data = (qaddr_t)devfs_mp_p);
b0d623f7	204	mp->mnt_vfsstat.f_fsid.val[0] = (int32_t)(uintptr_t)devfs_mp_p;
91447636	205	mp->mnt_vfsstat.f_fsid.val[1] = vfs_typenum(mp);
1c79356b A	206	mp->mnt_flag \|= MNT_LOCAL;
1c79356b A	207
91447636	208	DEVFS_LOCK();
1c79356b	209	error = dev_dup_plane(devfs_mp_p);
91447636 A	210	DEVFS_UNLOCK();
91447636 A	211
1c79356b A	212	if (error) {
	213	mp->mnt_data = (qaddr_t)0;
	214	FREE((caddr_t)devfs_mp_p, M_DEVFSMNT);
	215	return (error);
91447636 A	216	} else
91447636 A	217	DEVFS_INCR_MOUNTS();
1c79356b A	218
	219	/*-
	220	* Copy in the name of the directory the filesystem
	221	* is to be mounted on.
	222	* And we clear the remainder of the character strings
	223	* to be tidy.
	224	*/
	225
91447636 A	226	bzero(mp->mnt_vfsstat.f_mntfromname, MAXPATHLEN);
91447636 A	227	bcopy("devfs",mp->mnt_vfsstat.f_mntfromname, 5);
2d21ac55	228	(void)devfs_statfs(mp, &mp->mnt_vfsstat, ctx);
91447636	229
1c79356b A	230	return 0;
	231	}
	232
	233
	234	static int
2d21ac55	235	devfs_start(__unused struct mount *mp, __unused int flags, __unused vfs_context_t ctx)
1c79356b A	236	{
	237	return 0;
	238	}
	239
	240	/*-
	241	* Unmount the filesystem described by mp.
	242	*/
	243	static int
2d21ac55	244	devfs_unmount( struct mount *mp, int mntflags, __unused vfs_context_t ctx)
1c79356b A	245	{
	246	struct devfsmount devfs_mp_p = (struct devfsmount )mp->mnt_data;
	247	int flags = 0;
9bccf70c	248	int force = 0;
1c79356b A	249	int error;
	250
	251	if (mntflags & MNT_FORCE) {
	252	flags \|= FORCECLOSE;
9bccf70c	253	force = 1;
1c79356b A	254	}
1c79356b A	255	error = vflush(mp, NULLVP, flags);
9bccf70c	256	if (error && !force)
1c79356b A	257	return error;
1c79356b A	258
91447636	259	DEVFS_LOCK();
1c79356b	260	devfs_free_plane(devfs_mp_p);
91447636 A	261	DEVFS_UNLOCK();
91447636 A	262
1c79356b	263	DEVFS_DECR_MOUNTS();
91447636 A	264
91447636 A	265	FREE((caddr_t)devfs_mp_p, M_DEVFSMNT);
1c79356b A	266	mp->mnt_data = (qaddr_t)0;
	267	mp->mnt_flag &= ~MNT_LOCAL;
	268
	269	return 0;
	270	}
	271
	272	/* return the address of the root vnode in vpp /
	273	static int
2d21ac55	274	devfs_root(struct mount mp, struct vnode *vpp, __unused vfs_context_t ctx)
1c79356b A	275	{
	276	struct devfsmount devfs_mp_p = (struct devfsmount )(mp->mnt_data);
	277	int error;
	278
91447636	279	DEVFS_LOCK();
2d21ac55 A	280	/* last parameter to devfs_dntovn() is ignored */
2d21ac55 A	281	error = devfs_dntovn(devfs_mp_p->plane_root->de_dnp, vpp, NULL);
91447636	282	DEVFS_UNLOCK();
1c79356b	283
91447636	284	return error;
1c79356b A	285	}
	286
	287	static int
2d21ac55	288	devfs_statfs( struct mount mp, struct vfsstatfs sbp, __unused vfs_context_t ctx)
1c79356b A	289	{
	290	struct devfsmount devfs_mp_p = (struct devfsmount )mp->mnt_data;
	291
	292	/*-
	293	* Fill in the stat block.
	294	*/
91447636	295	//sbp->f_type = mp->mnt_vfsstat.f_type;
1c79356b A	296	sbp->f_flags = 0; /* XXX */
	297	sbp->f_bsize = 512;
	298	sbp->f_iosize = 512;
	299	sbp->f_blocks = (devfs_stats.mounts * sizeof(struct devfsmount)
	300	+ devfs_stats.nodes * sizeof(devnode_t)
	301	+ devfs_stats.entries * sizeof(devdirent_t)
	302	+ devfs_stats.stringspace
	303	) / sbp->f_bsize;
	304	sbp->f_bfree = 0;
	305	sbp->f_bavail = 0;
	306	sbp->f_files = devfs_stats.nodes;
	307	sbp->f_ffree = 0;
b0d623f7	308	sbp->f_fsid.val[0] = (int32_t)(uintptr_t)devfs_mp_p;
91447636	309	sbp->f_fsid.val[1] = vfs_typenum(mp);
1c79356b	310
91447636 A	311	return 0;
	312	}
	313
	314	static int
2d21ac55	315	devfs_vfs_getattr(__unused mount_t mp, struct vfs_attr *fsap, __unused vfs_context_t ctx)
91447636 A	316	{
	317	VFSATTR_RETURN(fsap, f_objcount, devfs_stats.nodes);
	318	VFSATTR_RETURN(fsap, f_maxobjcount, devfs_stats.nodes);
	319	VFSATTR_RETURN(fsap, f_bsize, 512);
	320	VFSATTR_RETURN(fsap, f_iosize, 512);
	321	if (VFSATTR_IS_ACTIVE(fsap, f_blocks) \|\| VFSATTR_IS_ACTIVE(fsap, f_bused)) {
	322	fsap->f_blocks = (devfs_stats.mounts * sizeof(struct devfsmount)
	323	+ devfs_stats.nodes * sizeof(devnode_t)
	324	+ devfs_stats.entries * sizeof(devdirent_t)
	325	+ devfs_stats.stringspace
	326	) / fsap->f_bsize;
	327	fsap->f_bused = fsap->f_blocks;
	328	VFSATTR_SET_SUPPORTED(fsap, f_blocks);
	329	VFSATTR_SET_SUPPORTED(fsap, f_bused);
1c79356b	330	}
91447636 A	331	VFSATTR_RETURN(fsap, f_bfree, 0);
	332	VFSATTR_RETURN(fsap, f_bavail, 0);
	333	VFSATTR_RETURN(fsap, f_files, devfs_stats.nodes);
	334	VFSATTR_RETURN(fsap, f_ffree, 0);
	335	VFSATTR_RETURN(fsap, f_fssubtype, 0);
	336
b0d623f7 A	337	if (VFSATTR_IS_ACTIVE(fsap, f_capabilities)) {
	338	fsap->f_capabilities.capabilities[VOL_CAPABILITIES_FORMAT] =
	339	VOL_CAP_FMT_SYMBOLICLINKS \|
	340	VOL_CAP_FMT_HARDLINKS \|
	341	VOL_CAP_FMT_NO_ROOT_TIMES \|
	342	VOL_CAP_FMT_CASE_SENSITIVE \|
	343	VOL_CAP_FMT_CASE_PRESERVING \|
	344	VOL_CAP_FMT_FAST_STATFS \|
	345	VOL_CAP_FMT_2TB_FILESIZE \|
	346	VOL_CAP_FMT_HIDDEN_FILES;
	347	fsap->f_capabilities.capabilities[VOL_CAPABILITIES_INTERFACES] =
	348	VOL_CAP_INT_ATTRLIST ;
	349	fsap->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED1] = 0;
	350	fsap->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED2] = 0;
	351
	352	fsap->f_capabilities.valid[VOL_CAPABILITIES_FORMAT] =
	353	VOL_CAP_FMT_PERSISTENTOBJECTIDS \|
	354	VOL_CAP_FMT_SYMBOLICLINKS \|
	355	VOL_CAP_FMT_HARDLINKS \|
	356	VOL_CAP_FMT_JOURNAL \|
	357	VOL_CAP_FMT_JOURNAL_ACTIVE \|
	358	VOL_CAP_FMT_NO_ROOT_TIMES \|
	359	VOL_CAP_FMT_SPARSE_FILES \|
	360	VOL_CAP_FMT_ZERO_RUNS \|
	361	VOL_CAP_FMT_CASE_SENSITIVE \|
	362	VOL_CAP_FMT_CASE_PRESERVING \|
	363	VOL_CAP_FMT_FAST_STATFS \|
	364	VOL_CAP_FMT_2TB_FILESIZE \|
	365	VOL_CAP_FMT_OPENDENYMODES \|
	366	VOL_CAP_FMT_HIDDEN_FILES \|
	367	VOL_CAP_FMT_PATH_FROM_ID \|
	368	VOL_CAP_FMT_NO_VOLUME_SIZES;
	369	fsap->f_capabilities.valid[VOL_CAPABILITIES_INTERFACES] =
	370	VOL_CAP_INT_SEARCHFS \|
	371	VOL_CAP_INT_ATTRLIST \|
	372	VOL_CAP_INT_NFSEXPORT \|
	373	VOL_CAP_INT_READDIRATTR \|
	374	VOL_CAP_INT_EXCHANGEDATA \|
	375	VOL_CAP_INT_COPYFILE \|
	376	VOL_CAP_INT_ALLOCATE \|
	377	VOL_CAP_INT_VOL_RENAME \|
	378	VOL_CAP_INT_ADVLOCK \|
	379	VOL_CAP_INT_FLOCK \|
	380	VOL_CAP_INT_EXTENDED_SECURITY \|
	381	VOL_CAP_INT_USERACCESS \|
	382	VOL_CAP_INT_MANLOCK \|
	383	VOL_CAP_INT_EXTENDED_ATTR \|
	384	VOL_CAP_INT_NAMEDSTREAMS;
	385	fsap->f_capabilities.valid[VOL_CAPABILITIES_RESERVED1] = 0;
	386	fsap->f_capabilities.valid[VOL_CAPABILITIES_RESERVED2] = 0;
	387
	388	VFSATTR_SET_SUPPORTED(fsap, f_capabilities);
	389	}
	390
	391	if (VFSATTR_IS_ACTIVE(fsap, f_attributes)) {
	392	fsap->f_attributes.validattr.commonattr =
	393	ATTR_CMN_NAME \| ATTR_CMN_DEVID \| ATTR_CMN_FSID \|
	394	ATTR_CMN_OBJTYPE \| ATTR_CMN_OBJTAG \| ATTR_CMN_OBJID \|
	395	ATTR_CMN_PAROBJID \|
	396	ATTR_CMN_MODTIME \| ATTR_CMN_CHGTIME \| ATTR_CMN_ACCTIME \|
	397	ATTR_CMN_OWNERID \| ATTR_CMN_GRPID \| ATTR_CMN_ACCESSMASK \|
	398	ATTR_CMN_FLAGS \| ATTR_CMN_USERACCESS \| ATTR_CMN_FILEID;
	399	fsap->f_attributes.validattr.volattr =
	400	ATTR_VOL_FSTYPE \| ATTR_VOL_SIZE \| ATTR_VOL_SPACEFREE \|
401	ATTR_VOL_SPACEAVAIL \| ATTR_VOL_MINALLOCATION \|
402	ATTR_VOL_OBJCOUNT \| ATTR_VOL_MAXOBJCOUNT \|
403	ATTR_VOL_MOUNTPOINT \| ATTR_VOL_MOUNTFLAGS \|
404	ATTR_VOL_MOUNTEDDEVICE \| ATTR_VOL_CAPABILITIES \|
405	ATTR_VOL_ATTRIBUTES;
406	fsap->f_attributes.validattr.dirattr =
407	ATTR_DIR_LINKCOUNT \| ATTR_DIR_MOUNTSTATUS;
408	fsap->f_attributes.validattr.fileattr =
409	ATTR_FILE_LINKCOUNT \| ATTR_FILE_TOTALSIZE \|
410	ATTR_FILE_IOBLOCKSIZE \| ATTR_FILE_DEVTYPE \|
411	ATTR_FILE_DATALENGTH;
412	fsap->f_attributes.validattr.forkattr = 0;
413
414	fsap->f_attributes.nativeattr.commonattr =
415	ATTR_CMN_NAME \| ATTR_CMN_DEVID \| ATTR_CMN_FSID \|
416	ATTR_CMN_OBJTYPE \| ATTR_CMN_OBJTAG \| ATTR_CMN_OBJID \|
417	ATTR_CMN_PAROBJID \|
418	ATTR_CMN_MODTIME \| ATTR_CMN_CHGTIME \| ATTR_CMN_ACCTIME \|
419	ATTR_CMN_OWNERID \| ATTR_CMN_GRPID \| ATTR_CMN_ACCESSMASK \|
420	ATTR_CMN_FLAGS \| ATTR_CMN_USERACCESS \| ATTR_CMN_FILEID;
421	fsap->f_attributes.nativeattr.volattr =
422	ATTR_VOL_FSTYPE \| ATTR_VOL_SIZE \| ATTR_VOL_SPACEFREE \|
423	ATTR_VOL_SPACEAVAIL \| ATTR_VOL_MINALLOCATION \|
424	ATTR_VOL_OBJCOUNT \| ATTR_VOL_MAXOBJCOUNT \|
425	ATTR_VOL_MOUNTPOINT \| ATTR_VOL_MOUNTFLAGS \|
426	ATTR_VOL_MOUNTEDDEVICE \| ATTR_VOL_CAPABILITIES \|
427	ATTR_VOL_ATTRIBUTES;
428	fsap->f_attributes.nativeattr.dirattr =
429	ATTR_DIR_MOUNTSTATUS;
430	fsap->f_attributes.nativeattr.fileattr =
431	ATTR_FILE_LINKCOUNT \| ATTR_FILE_TOTALSIZE \|
432	ATTR_FILE_IOBLOCKSIZE \| ATTR_FILE_DEVTYPE \|
433	ATTR_FILE_DATALENGTH;
434	fsap->f_attributes.nativeattr.forkattr = 0;
435
436	VFSATTR_SET_SUPPORTED(fsap, f_attributes);
437	}
438
1c79356b A	439	return 0;
	440	}
	441
	442	static int
2d21ac55	443	devfs_sync(__unused struct mount *mp, __unused int waitfor, __unused vfs_context_t ctx)
1c79356b A	444	{
	445	return (0);
	446	}
	447
	448
	449	static int
2d21ac55	450	devfs_vget(__unused struct mount mp, __unused ino64_t ino, __unused struct vnode *vpp, __unused vfs_context_t ctx)
1c79356b	451	{
91447636	452	return ENOTSUP;
1c79356b A	453	}
	454
	455	/*************************************************************
	456	* The concept of exporting a kernel generated devfs is stupid
	457	* So don't handle filehandles
	458	*/
	459
	460	static int
2d21ac55	461	devfs_fhtovp (__unused struct mount mp, __unused int fhlen, __unused unsigned char fhp, __unused struct vnode **vpp, __unused vfs_context_t ctx)
1c79356b A	462	{
	463	return (EINVAL);
	464	}
	465
	466
	467	static int
2d21ac55	468	devfs_vptofh (__unused struct vnode vp, __unused int fhlenp, __unused unsigned char *fhp, __unused vfs_context_t ctx)
1c79356b A	469	{
	470	return (EINVAL);
	471	}
	472
	473	static int
91447636 A	474	devfs_sysctl(__unused int *name, __unused u_int namelen, __unused user_addr_t oldp,
91447636 A	475	__unused size_t *oldlenp, __unused user_addr_t newp,
2d21ac55	476	__unused size_t newlen, __unused vfs_context_t ctx)
1c79356b	477	{
91447636	478	return (ENOTSUP);
1c79356b A	479	}
	480
	481	#include <sys/namei.h>
	482
	483	/*
	484	* Function: devfs_kernel_mount
	485	* Purpose:
	486	* Mount devfs at the given mount point from within the kernel.
	487	*/
	488	int
	489	devfs_kernel_mount(char * mntname)
	490	{
1c79356b	491	int error;
2d21ac55	492	vfs_context_t ctx = vfs_context_kernel();
fe8ab488	493	char fsname[] = "devfs";
1c79356b	494
fe8ab488	495	error = kernel_mount(fsname, NULLVP, NULLVP, mntname, NULL, 0, MNT_DONTBROWSE, KERNEL_MOUNT_NOAUTH, ctx);
1c79356b	496	if (error) {
fe8ab488 A	497	printf("devfs_kernel_mount: kernel_mount failed: %d\n", error);
fe8ab488 A	498	return (error);
1c79356b	499	}
fe8ab488	500
1c79356b A	501	return (0);
	502	}
	503
	504	struct vfsops devfs_vfsops = {
39037602 A	505	.vfs_mount = devfs_mount,
	506	.vfs_start = devfs_start,
	507	.vfs_unmount = devfs_unmount,
	508	.vfs_root = devfs_root,
	509	.vfs_getattr = devfs_vfs_getattr,
	510	.vfs_sync = devfs_sync,
	511	.vfs_vget = devfs_vget,
	512	.vfs_fhtovp = devfs_fhtovp,
	513	.vfs_vptofh = devfs_vptofh,
	514	.vfs_init = devfs_init,
	515	.vfs_sysctl = devfs_sysctl,
	516	// There are other VFS ops that we do not support
1c79356b	517	};