/*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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:
* 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
* 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
#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"
-static int devfs_statfs( struct mount *mp, struct vfsstatfs *sbp, vfs_context_t context);
-static int devfs_vfs_getattr(mount_t mp, struct vfs_attr *fsap, vfs_context_t context);
+#if FDESC
+#include "fdesc.h"
+#endif /* FDESC */
-static struct vfstable * devfs_vfsp = 0;
-extern int setup_kmem;
+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
+ * 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(struct vfsconf *vfsp)
-{
- devfs_vfsp = (struct vfstable *)vfsp; /* remember this for devfs_kernel_mount below */
-
- 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 (setup_kmem) {
- devfs_setup_kmem();
- }
- 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");
- devfs_make_node(makedev(6, 0), DEVFS_CHAR,
- UID_ROOT, GID_WHEEL, 0600, "klog");
- return 0;
-}
-
-__private_extern__ void
-devfs_setup_kmem(void)
+devfs_init(__unused struct vfsconf *vfsp)
{
- devfs_make_node(makedev(3, 0), DEVFS_CHAR,
- UID_ROOT, GID_KMEM, 0640, "mem");
- devfs_make_node(makedev(3, 1), DEVFS_CHAR,
+ 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
*/
/*proto*/
int
-devfs_mount(struct mount *mp, __unused vnode_t devvp, __unused user_addr_t data, vfs_context_t context)
+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 */
+ 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)
- {
+ if (mp->mnt_flag & MNT_UPDATE) {
return 0;
}
*/
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));
+ 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
*/
- mp->mnt_data = (qaddr_t)devfs_mp_p;
- mp->mnt_vfsstat.f_fsid.val[0] = (int32_t)(void *)devfs_mp_p;
+ __IGNORE_WCASTALIGN(mp->mnt_data = (qaddr_t)devfs_mp_p);
+ mp->mnt_vfsstat.f_fsid.val[0] = (int32_t)VM_KERNEL_ADDRHASH(devfs_mp_p);
mp->mnt_vfsstat.f_fsid.val[1] = vfs_typenum(mp);
mp->mnt_flag |= MNT_LOCAL;
if (error) {
mp->mnt_data = (qaddr_t)0;
- FREE((caddr_t)devfs_mp_p, M_DEVFSMNT);
- return (error);
- } else
- DEVFS_INCR_MOUNTS();
+ FREE(devfs_mp_p, M_DEVFSMNT);
+ return error;
+ } else {
+ DEVFS_INCR_MOUNTS();
+ }
/*-
* Copy in the name of the directory the filesystem
* 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, context);
+ 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 context)
+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 context)
+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)
+ if (error && !force) {
return error;
+ }
DEVFS_LOCK();
devfs_free_plane(devfs_mp_p);
DEVFS_DECR_MOUNTS();
- FREE((caddr_t)devfs_mp_p, M_DEVFSMNT);
+ FREE(devfs_mp_p, M_DEVFSMNT);
mp->mnt_data = (qaddr_t)0;
mp->mnt_flag &= ~MNT_LOCAL;
/* return the address of the root vnode in *vpp */
static int
-devfs_root(struct mount *mp, struct vnode **vpp, vfs_context_t context)
+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();
- error = devfs_dntovn(devfs_mp_p->plane_root->de_dnp, vpp, context->vc_proc);
+ /* 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 context)
+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_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;
+ + 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)(void *)devfs_mp_p;
+ sbp->f_fsid.val[0] = (int32_t)VM_KERNEL_ADDRHASH(devfs_mp_p);
sbp->f_fsid.val[1] = vfs_typenum(mp);
return 0;
}
static int
-devfs_vfs_getattr(mount_t mp, struct vfs_attr *fsap, vfs_context_t context)
+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_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;
+ + 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_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 context)
+devfs_sync(__unused struct mount *mp, __unused int waitfor, __unused vfs_context_t ctx)
{
- return (0);
+ return 0;
}
static int
-devfs_vget(__unused struct mount *mp, __unused ino64_t ino, __unused struct vnode **vpp, __unused vfs_context_t context)
+devfs_vget(__unused struct mount *mp, __unused ino64_t ino, __unused struct vnode **vpp, __unused vfs_context_t ctx)
{
return ENOTSUP;
}
*/
static int
-devfs_fhtovp (__unused struct mount *mp, __unused int fhlen, __unused unsigned char *fhp, __unused struct vnode **vpp, __unused vfs_context_t context)
+devfs_fhtovp(__unused struct mount *mp, __unused int fhlen, __unused unsigned char *fhp, __unused struct vnode **vpp, __unused vfs_context_t ctx)
{
- return (EINVAL);
+ return EINVAL;
}
static int
-devfs_vptofh (__unused struct vnode *vp, __unused int *fhlenp, __unused unsigned char *fhp, __unused vfs_context_t context)
+devfs_vptofh(__unused struct vnode *vp, __unused int *fhlenp, __unused unsigned char *fhp, __unused vfs_context_t ctx)
{
- return (EINVAL);
+ 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 context)
+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);
+ return ENOTSUP;
}
#include <sys/namei.h>
int
devfs_kernel_mount(char * mntname)
{
- struct mount *mp;
int error;
- struct nameidata nd;
- struct vnode * vp;
- struct vfs_context context;
-
- if (devfs_vfsp == NULL) {
- printf("devfs_kernel_mount: devfs_vfsp is NULL\n");
- return (EINVAL);
- }
- context.vc_proc = current_proc();
- context.vc_ucred = kauth_cred_get();
-
- /*
- * Get vnode to be covered
- */
- NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE32,
- CAST_USER_ADDR_T(mntname), &context);
- if ((error = namei(&nd))) {
- printf("devfs_kernel_mount: failed to find directory '%s', %d",
- mntname, error);
- return (error);
- }
- nameidone(&nd);
- vp = nd.ni_vp;
-
- if ((error = VNOP_FSYNC(vp, MNT_WAIT, &context))) {
- printf("devfs_kernel_mount: vnop_fsync failed: %d\n", error);
- vnode_put(vp);
- return (error);
- }
- if ((error = buf_invalidateblks(vp, BUF_WRITE_DATA, 0, 0))) {
- printf("devfs_kernel_mount: buf_invalidateblks failed: %d\n", error);
- vnode_put(vp);
- return (error);
- }
- if (vnode_isdir(vp) == 0) {
- printf("devfs_kernel_mount: '%s' is not a directory\n", mntname);
- vnode_put(vp);
- return (ENOTDIR);
- }
- if ((vnode_mountedhere(vp))) {
- vnode_put(vp);
- return (EBUSY);
- }
-
- /*
- * Allocate and initialize the filesystem.
- */
- MALLOC_ZONE(mp, struct mount *, (u_long)sizeof(struct mount),
- M_MOUNT, M_WAITOK);
- bzero((char *)mp, (u_long)sizeof(struct mount));
-
- /* Initialize the default IO constraints */
- mp->mnt_maxreadcnt = mp->mnt_maxwritecnt = MAXPHYS;
- mp->mnt_segreadcnt = mp->mnt_segwritecnt = 32;
-
- mount_lock_init(mp);
- TAILQ_INIT(&mp->mnt_vnodelist);
- TAILQ_INIT(&mp->mnt_workerqueue);
- TAILQ_INIT(&mp->mnt_newvnodes);
-
- (void)vfs_busy(mp, LK_NOWAIT);
- mp->mnt_op = devfs_vfsp->vfc_vfsops;
- mp->mnt_vtable = devfs_vfsp;
- devfs_vfsp->vfc_refcount++;
- devfs_vfsp->vfc_threadsafe = TRUE;
- devfs_vfsp->vfc_64bitready = TRUE;
- mp->mnt_flag = 0;
- mp->mnt_flag |= devfs_vfsp->vfc_flags & MNT_VISFLAGMASK;
- strncpy(mp->mnt_vfsstat.f_fstypename, devfs_vfsp->vfc_name, MFSTYPENAMELEN);
- vp->v_mountedhere = mp;
- mp->mnt_vnodecovered = vp;
- mp->mnt_vfsstat.f_owner = kauth_cred_getuid(kauth_cred_get());
- (void) copystr(mntname, mp->mnt_vfsstat.f_mntonname, MAXPATHLEN - 1, 0);
-
- error = devfs_mount(mp, NULL, NULL, &context);
+ 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: mount %s failed: %d", mntname, error);
- mp->mnt_vtable->vfc_refcount--;
-
- vfs_unbusy(mp);
-
- mount_lock_destroy(mp);
- FREE_ZONE(mp, sizeof (struct mount), M_MOUNT);
- vnode_put(vp);
- return (error);
+ printf("devfs_kernel_mount: kernel_mount failed: %d\n", error);
+ return error;
}
- vnode_ref(vp);
- vnode_put(vp);
- vfs_unbusy(mp);
- mount_list_add(mp);
- return (0);
+
+ return 0;
}
-struct vfsops devfs_vfsops = {
- devfs_mount,
- devfs_start,
- devfs_unmount,
- devfs_root,
- NULL, /* quotactl */
- devfs_vfs_getattr,
- devfs_sync,
- devfs_vget,
- devfs_fhtovp,
- devfs_vptofh,
- devfs_init,
- devfs_sysctl
+const 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
};
projects / apple / xnu.git / blobdiff