static void
/*ARGSUSED*/
pty_getvattr(struct mount *mp, struct lwp *l, struct vattr *vattr)
{
vattr_null(vattr);
/* get real uid */
vattr->va_uid = kauth_cred_getuid(l->l_cred);
vattr->va_gid = TTY_GID;
vattr->va_mode = TTY_PERM;
}
/*
* Invent attributes for ptyfsnode (vp) and store
* them in (vap).
* Directories lengths are returned as zero since
* any real length would require the genuine size
* to be computed, and nothing cares anyway.
*
* this is relatively minimal for ptyfs.
*/
int
ptyfs_getattr(void *v)
{
struct vop_getattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
kauth_cred_t a_cred;
} */ *ap = v;
struct ptyfsnode *ptyfs = VTOPTYFS(ap->a_vp);
struct vattr *vap = ap->a_vap;
PTYFS_ITIMES(ptyfs, NULL, NULL, NULL);
/* start by zeroing out the attributes */
vattr_null(vap);
/* next do all the common fields */
vap->va_type = ap->a_vp->v_type;
vap->va_fsid = ap->a_vp->v_mount->mnt_stat.f_fsidx.__fsid_val[0];
vap->va_fileid = ptyfs->ptyfs_fileno;
vap->va_gen = 0;
vap->va_flags = 0;
vap->va_blocksize = PAGE_SIZE;
vap->va_atime = ptyfs->ptyfs_atime;
vap->va_mtime = ptyfs->ptyfs_mtime;
vap->va_ctime = ptyfs->ptyfs_ctime;
vap->va_birthtime = ptyfs->ptyfs_birthtime;
vap->va_mode = ptyfs->ptyfs_mode;
vap->va_flags = ptyfs->ptyfs_flags;
vap->va_uid = ptyfs->ptyfs_uid;
vap->va_gid = ptyfs->ptyfs_gid;
switch (ptyfs->ptyfs_type) {
case PTYFSpts:
case PTYFSptc:
if (pty_isfree(ptyfs->ptyfs_pty, 1))
return ENOENT;
vap->va_bytes = vap->va_size = 0;
vap->va_rdev = ap->a_vp->v_rdev;
vap->va_nlink = 1;
break;
case PTYFSroot:
vap->va_rdev = 0;
vap->va_bytes = vap->va_size = DEV_BSIZE;
vap->va_nlink = 2;
break;
default:
return EOPNOTSUPP;
}
return 0;
}
static int
puffs_vnop_getattr(struct vop_getattr_args *ap)
{
PUFFS_MSG_VARS(vn, getattr);
struct vnode *vp = ap->a_vp;
struct mount *mp = vp->v_mount;
struct puffs_mount *pmp = MPTOPUFFSMP(mp);
struct vattr *vap, *rvap;
struct puffs_node *pn = VPTOPP(vp);
int error = 0;
if (vp->v_type == VBLK || vp->v_type == VCHR)
return ENOTSUP;
vap = ap->a_vap;
PUFFS_MSG_ALLOC(vn, getattr);
vattr_null(&getattr_msg->pvnr_va);
puffs_credcvt(&getattr_msg->pvnr_cred, curproc->p_ucred);
puffs_msg_setinfo(park_getattr, PUFFSOP_VN,
PUFFS_VN_GETATTR, VPTOPNC(vp));
PUFFS_MSG_ENQUEUEWAIT2(pmp, park_getattr, vp->v_data, NULL, error);
error = checkerr(pmp, error, __func__);
if (error)
goto out;
rvap = &getattr_msg->pvnr_va;
(void) memcpy(vap, rvap, sizeof(struct vattr));
vap->va_fsid = mp->mnt_stat.f_fsid.val[0];
if (pn->pn_stat & PNODE_METACACHE_ATIME)
vap->va_atime = pn->pn_mc_atime;
if (pn->pn_stat & PNODE_METACACHE_CTIME)
vap->va_ctime = pn->pn_mc_ctime;
if (pn->pn_stat & PNODE_METACACHE_MTIME)
vap->va_mtime = pn->pn_mc_mtime;
if (pn->pn_stat & PNODE_METACACHE_SIZE) {
vap->va_size = pn->pn_mc_size;
} else {
if (rvap->va_size != VNOVAL
&& vp->v_type != VBLK && vp->v_type != VCHR) {
pn->pn_serversize = rvap->va_size;
if (vp->v_type == VREG)
puffs_meta_setsize(vp, rvap->va_size, 0);
}
}
out:
PUFFS_MSG_RELEASE(getattr);
return error;
}
static void
zfs_init_vattr(vattr_t *vap, uint64_t mask, uint64_t mode,
uint64_t uid, uint64_t gid, uint64_t rdev, uint64_t nodeid)
{
vattr_null(vap);
vap->va_mask = (uint_t)mask;
if (mask & AT_TYPE)
vap->va_type = IFTOVT(mode);
if (mask & AT_MODE)
vap->va_mode = mode & MODEMASK;
if (mask & AT_UID)
vap->va_uid = (uid_t)(IS_EPHEMERAL(uid)) ? -1 : uid;
if (mask & AT_GID)
vap->va_gid = (gid_t)(IS_EPHEMERAL(gid)) ? -1 : gid;
vap->va_rdev = zfs_cmpldev(rdev);
vap->va_nodeid = nodeid;
}
static void
fuse_vnode_init(struct vnode *vp, struct fuse_vnode_data *fvdat,
uint64_t nodeid, enum vtype vtyp)
{
int i;
fvdat->nid = nodeid;
vattr_null(&fvdat->cached_attrs);
if (nodeid == FUSE_ROOT_ID) {
vp->v_vflag |= VV_ROOT;
}
vp->v_type = vtyp;
vp->v_data = fvdat;
for (i = 0; i < FUFH_MAXTYPE; i++)
fvdat->fufh[i].fh_type = FUFH_INVALID;
atomic_add_acq_int(&fuse_node_count, 1);
}
static int
flushvncache(struct vnode *vp, int waitfor)
{
struct puffs_node *pn = VPTOPP(vp);
struct vattr va;
int error = 0;
/* flush out information from our metacache, see vop_setattr */
if (pn->pn_stat & PNODE_METACACHE_MASK
&& (pn->pn_stat & PNODE_DYING) == 0) {
vattr_null(&va);
error = dosetattr(vp, &va, FSCRED, SETATTR_CHSIZE |
(waitfor == MNT_NOWAIT ? 0 : SETATTR_ASYNC));
if (error)
return error;
}
/*
* flush pages to avoid being overly dirty
*/
vfsync(vp, waitfor, 0, NULL, NULL);
return error;
}
int
adosfs_getattr(void *v)
{
struct vop_getattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
kauth_cred_t a_cred;
} */ *sp = v;
struct vattr *vap;
struct adosfsmount *amp;
struct anode *ap;
u_long fblks;
#ifdef ADOSFS_DIAGNOSTIC
advopprint(sp);
#endif
vap = sp->a_vap;
ap = VTOA(sp->a_vp);
amp = ap->amp;
vattr_null(vap);
vap->va_uid = ap->uid;
vap->va_gid = ap->gid;
vap->va_fsid = sp->a_vp->v_mount->mnt_stat.f_fsidx.__fsid_val[0];
vap->va_atime.tv_sec = vap->va_mtime.tv_sec = vap->va_ctime.tv_sec =
ap->mtime.days * 24 * 60 * 60 + ap->mtime.mins * 60 +
ap->mtime.ticks / 50 + (8 * 365 + 2) * 24 * 60 * 60;
vap->va_atime.tv_nsec = vap->va_mtime.tv_nsec = vap->va_ctime.tv_nsec = 0;
vap->va_gen = 0;
vap->va_flags = 0;
vap->va_rdev = NODEV;
vap->va_fileid = ap->block;
vap->va_type = sp->a_vp->v_type;
vap->va_mode = adunixprot(ap->adprot) & amp->mask;
if (sp->a_vp->v_type == VDIR) {
vap->va_nlink = 1; /* XXX bogus, oh well */
vap->va_bytes = amp->bsize;
vap->va_size = amp->bsize;
} else {
/*
* XXX actually we can track this if we were to walk the list
* of links if it exists.
* XXX for now, just set nlink to 2 if this is a hard link
* to a file, or a file with a hard link.
*/
vap->va_nlink = 1 + (ap->linkto != 0);
/*
* round up to nearest blocks add number of file list
* blocks needed and mutiply by number of bytes per block.
*/
fblks = howmany(ap->fsize, amp->dbsize);
fblks += howmany(fblks, ANODENDATBLKENT(ap));
vap->va_bytes = fblks * amp->dbsize;
vap->va_size = ap->fsize;
vap->va_blocksize = amp->dbsize;
}
#ifdef ADOSFS_DIAGNOSTIC
printf(" 0)");
#endif
return(0);
}
/*
* Routine: macx_swapon
* Function:
* Syscall interface to add a file to backing store
*/
int
macx_swapon(
char *filename,
int flags,
long size,
long priority)
{
struct vnode *vp = 0;
struct nameidata nd, *ndp;
struct proc *p = current_proc();
pager_file_t pf;
register int error;
kern_return_t kr;
mach_port_t backing_store;
memory_object_default_t default_pager;
int i;
boolean_t funnel_state;
struct vattr vattr;
AUDIT_MACH_SYSCALL_ENTER(AUE_SWAPON);
AUDIT_ARG(value, priority);
funnel_state = thread_funnel_set(kernel_flock, TRUE);
ndp = &nd;
if ((error = suser(p->p_ucred, &p->p_acflag)))
goto swapon_bailout;
if(default_pager_init_flag == 0) {
start_def_pager(NULL);
default_pager_init_flag = 1;
}
/*
* Get a vnode for the paging area.
*/
NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNPATH1, UIO_USERSPACE,
filename, p);
if ((error = namei(ndp)))
goto swapon_bailout;
vp = ndp->ni_vp;
if (vp->v_type != VREG) {
error = EINVAL;
VOP_UNLOCK(vp, 0, p);
goto swapon_bailout;
}
UBCINFOCHECK("macx_swapon", vp);
if (error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) {
VOP_UNLOCK(vp, 0, p);
goto swapon_bailout;
}
if (vattr.va_size < (u_quad_t)size) {
vattr_null(&vattr);
vattr.va_size = (u_quad_t)size;
error = VOP_SETATTR(vp, &vattr, p->p_ucred, p);
if (error) {
VOP_UNLOCK(vp, 0, p);
goto swapon_bailout;
}
}
/* add new backing store to list */
i = 0;
while(bs_port_table[i].vp != 0) {
if(i == MAX_BACKING_STORE)
break;
i++;
}
if(i == MAX_BACKING_STORE) {
error = ENOMEM;
VOP_UNLOCK(vp, 0, p);
goto swapon_bailout;
}
/* remember the vnode. This vnode has namei() reference */
bs_port_table[i].vp = vp;
/*
* Look to see if we are already paging to this file.
*/
/* make certain the copy send of kernel call will work */
default_pager = MEMORY_OBJECT_DEFAULT_NULL;
kr = host_default_memory_manager(host_priv_self(), &default_pager, 0);
if(kr != KERN_SUCCESS) {
error = EAGAIN;
VOP_UNLOCK(vp, 0, p);
bs_port_table[i].vp = 0;
goto swapon_bailout;
}
kr = default_pager_backing_store_create(default_pager,
-1, /* default priority */
0, /* default cluster size */
&backing_store);
memory_object_default_deallocate(default_pager);
if(kr != KERN_SUCCESS) {
error = ENOMEM;
VOP_UNLOCK(vp, 0, p);
bs_port_table[i].vp = 0;
goto swapon_bailout;
}
/*
* NOTE: we are able to supply PAGE_SIZE here instead of
* an actual record size or block number because:
* a: we do not support offsets from the beginning of the
* file (allowing for non page size/record modulo offsets.
* b: because allow paging will be done modulo page size
*/
VOP_UNLOCK(vp, 0, p);
kr = default_pager_add_file(backing_store, vp, PAGE_SIZE,
((int)vattr.va_size)/PAGE_SIZE);
if(kr != KERN_SUCCESS) {
bs_port_table[i].vp = 0;
if(kr == KERN_INVALID_ARGUMENT)
error = EINVAL;
else
error = ENOMEM;
goto swapon_bailout;
}
bs_port_table[i].bs = (void *)backing_store;
error = 0;
if (!ubc_hold(vp))
panic("macx_swapon: hold");
/* Mark this vnode as being used for swapfile */
SET(vp->v_flag, VSWAP);
ubc_setcred(vp, p);
/*
* take an extra reference on the vnode to keep
* vnreclaim() away from this vnode.
*/
VREF(vp);
/* Hold on to the namei reference to the paging file vnode */
vp = 0;
swapon_bailout:
if (vp) {
vrele(vp);
}
(void) thread_funnel_set(kernel_flock, FALSE);
AUDIT_MACH_SYSCALL_EXIT(error);
return(error);
}
/*
* Common code for vnode open operations.
* Check permissions, and call the VOP_OPEN or VOP_CREATE routine.
*/
int
vn_open(struct nameidata *ndp, int fmode, int cmode)
{
struct vnode *vp;
struct lwp *l = curlwp;
kauth_cred_t cred = l->l_cred;
struct vattr va;
int error;
const char *pathstring;
if ((fmode & (O_CREAT | O_DIRECTORY)) == (O_CREAT | O_DIRECTORY))
return EINVAL;
ndp->ni_cnd.cn_flags &= TRYEMULROOT | NOCHROOT;
if (fmode & O_CREAT) {
ndp->ni_cnd.cn_nameiop = CREATE;
ndp->ni_cnd.cn_flags |= LOCKPARENT | LOCKLEAF;
if ((fmode & O_EXCL) == 0 &&
((fmode & O_NOFOLLOW) == 0))
ndp->ni_cnd.cn_flags |= FOLLOW;
} else {
ndp->ni_cnd.cn_nameiop = LOOKUP;
ndp->ni_cnd.cn_flags |= LOCKLEAF;
if ((fmode & O_NOFOLLOW) == 0)
ndp->ni_cnd.cn_flags |= FOLLOW;
}
pathstring = pathbuf_stringcopy_get(ndp->ni_pathbuf);
if (pathstring == NULL) {
return ENOMEM;
}
error = namei(ndp);
if (error)
goto out;
vp = ndp->ni_vp;
#if NVERIEXEC > 0
error = veriexec_openchk(l, ndp->ni_vp, pathstring, fmode);
if (error)
goto bad;
#endif /* NVERIEXEC > 0 */
if (fmode & O_CREAT) {
if (ndp->ni_vp == NULL) {
vattr_null(&va);
va.va_type = VREG;
va.va_mode = cmode;
if (fmode & O_EXCL)
va.va_vaflags |= VA_EXCLUSIVE;
error = VOP_CREATE(ndp->ni_dvp, &ndp->ni_vp,
&ndp->ni_cnd, &va);
vput(ndp->ni_dvp);
if (error)
goto out;
fmode &= ~O_TRUNC;
vp = ndp->ni_vp;
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
} else {
VOP_ABORTOP(ndp->ni_dvp, &ndp->ni_cnd);
if (ndp->ni_dvp == ndp->ni_vp)
vrele(ndp->ni_dvp);
else
vput(ndp->ni_dvp);
ndp->ni_dvp = NULL;
vp = ndp->ni_vp;
if (fmode & O_EXCL) {
error = EEXIST;
goto bad;
}
fmode &= ~O_CREAT;
}
} else {
vp = ndp->ni_vp;
}
if (vp->v_type == VSOCK) {
error = EOPNOTSUPP;
goto bad;
}
if (ndp->ni_vp->v_type == VLNK) {
error = EFTYPE;
goto bad;
}
if ((fmode & O_CREAT) == 0) {
error = vn_openchk(vp, cred, fmode);
if (error != 0)
goto bad;
}
if (fmode & O_TRUNC) {
vattr_null(&va);
va.va_size = 0;
error = VOP_SETATTR(vp, &va, cred);
if (error != 0)
goto bad;
}
if ((error = VOP_OPEN(vp, fmode, cred)) != 0)
goto bad;
if (fmode & FWRITE) {
mutex_enter(vp->v_interlock);
vp->v_writecount++;
mutex_exit(vp->v_interlock);
}
bad:
if (error)
vput(vp);
out:
pathbuf_stringcopy_put(ndp->ni_pathbuf, pathstring);
return (error);
}
/*
* Dump core, into a file named "progname.core" or "core" (depending on the
* value of shortcorename), unless the process was setuid/setgid.
*/
static int
coredump(struct lwp *l, const char *pattern)
{
struct vnode *vp;
struct proc *p;
struct vmspace *vm;
kauth_cred_t cred;
struct pathbuf *pb;
struct nameidata nd;
struct vattr vattr;
struct coredump_iostate io;
struct plimit *lim;
int error, error1;
char *name, *lastslash;
name = PNBUF_GET();
p = l->l_proc;
vm = p->p_vmspace;
mutex_enter(proc_lock); /* p_session */
mutex_enter(p->p_lock);
/*
* Refuse to core if the data + stack + user size is larger than
* the core dump limit. XXX THIS IS WRONG, because of mapped
* data.
*/
if (USPACE + ctob(vm->vm_dsize + vm->vm_ssize) >=
p->p_rlimit[RLIMIT_CORE].rlim_cur) {
error = EFBIG; /* better error code? */
mutex_exit(p->p_lock);
mutex_exit(proc_lock);
goto done;
}
/*
* It may well not be curproc, so grab a reference to its current
* credentials.
*/
kauth_cred_hold(p->p_cred);
cred = p->p_cred;
/*
* Make sure the process has not set-id, to prevent data leaks,
* unless it was specifically requested to allow set-id coredumps.
*/
if (p->p_flag & PK_SUGID) {
if (!security_setidcore_dump) {
error = EPERM;
mutex_exit(p->p_lock);
mutex_exit(proc_lock);
goto done;
}
pattern = security_setidcore_path;
}
/* Lock, as p_limit and pl_corename might change. */
lim = p->p_limit;
mutex_enter(&lim->pl_lock);
if (pattern == NULL) {
pattern = lim->pl_corename;
}
error = coredump_buildname(p, name, pattern, MAXPATHLEN);
mutex_exit(&lim->pl_lock);
if (error) {
mutex_exit(p->p_lock);
mutex_exit(proc_lock);
goto done;
}
/*
* On a simple filename, see if the filesystem allow us to write
* core dumps there.
*/
lastslash = strrchr(name, '/');
if (!lastslash) {
vp = p->p_cwdi->cwdi_cdir;
if (vp->v_mount == NULL ||
(vp->v_mount->mnt_flag & MNT_NOCOREDUMP) != 0)
error = EPERM;
}
mutex_exit(p->p_lock);
mutex_exit(proc_lock);
if (error)
goto done;
/*
* On a complex filename, see if the filesystem allow us to write
* core dumps there.
*
* XXX: We should have an API that avoids double lookups
*/
if (lastslash) {
char c[2];
if (lastslash - name >= MAXPATHLEN - 2) {
error = EPERM;
goto done;
}
c[0] = lastslash[1];
c[1] = lastslash[2];
lastslash[1] = '.';
lastslash[2] = '\0';
error = namei_simple_kernel(name, NSM_FOLLOW_NOEMULROOT, &vp);
if (error)
goto done;
if (vp->v_mount == NULL ||
(vp->v_mount->mnt_flag & MNT_NOCOREDUMP) != 0)
error = EPERM;
vrele(vp);
if (error)
goto done;
lastslash[1] = c[0];
lastslash[2] = c[1];
}
pb = pathbuf_create(name);
if (pb == NULL) {
error = ENOMEM;
goto done;
}
NDINIT(&nd, LOOKUP, NOFOLLOW, pb);
if ((error = vn_open(&nd, O_CREAT | O_NOFOLLOW | FWRITE,
S_IRUSR | S_IWUSR)) != 0) {
pathbuf_destroy(pb);
goto done;
}
vp = nd.ni_vp;
pathbuf_destroy(pb);
/*
* Don't dump to:
* - non-regular files
* - files with links
* - files we don't own
*/
if (vp->v_type != VREG ||
VOP_GETATTR(vp, &vattr, cred) || vattr.va_nlink != 1 ||
vattr.va_uid != kauth_cred_geteuid(cred)) {
error = EACCES;
goto out;
}
vattr_null(&vattr);
vattr.va_size = 0;
if ((p->p_flag & PK_SUGID) && security_setidcore_dump) {
vattr.va_uid = security_setidcore_owner;
vattr.va_gid = security_setidcore_group;
vattr.va_mode = security_setidcore_mode;
}
VOP_SETATTR(vp, &vattr, cred);
p->p_acflag |= ACORE;
io.io_lwp = l;
io.io_vp = vp;
io.io_cred = cred;
io.io_offset = 0;
/* Now dump the actual core file. */
error = (*p->p_execsw->es_coredump)(l, &io);
out:
VOP_UNLOCK(vp);
error1 = vn_close(vp, FWRITE, cred);
if (error == 0)
error = error1;
done:
if (name != NULL)
PNBUF_PUT(name);
return error;
}
/* Register a new filesystem type in the global table */
static int
vfs_register(struct vfsconf *vfc)
{
struct sysctl_oid *oidp;
struct vfsops *vfsops;
static int once;
if (!once) {
vattr_null(&va_null);
once = 1;
}
if (vfc->vfc_version != VFS_VERSION) {
printf("ERROR: filesystem %s, unsupported ABI version %x\n",
vfc->vfc_name, vfc->vfc_version);
return (EINVAL);
}
if (vfs_byname(vfc->vfc_name) != NULL)
return EEXIST;
vfc->vfc_typenum = maxvfsconf++;
TAILQ_INSERT_TAIL(&vfsconf, vfc, vfc_list);
/*
* If this filesystem has a sysctl node under vfs
* (i.e. vfs.xxfs), then change the oid number of that node to
* match the filesystem's type number. This allows user code
* which uses the type number to read sysctl variables defined
* by the filesystem to continue working. Since the oids are
* in a sorted list, we need to make sure the order is
* preserved by re-registering the oid after modifying its
* number.
*/
sysctl_lock();
SLIST_FOREACH(oidp, &sysctl__vfs_children, oid_link)
if (strcmp(oidp->oid_name, vfc->vfc_name) == 0) {
sysctl_unregister_oid(oidp);
oidp->oid_number = vfc->vfc_typenum;
sysctl_register_oid(oidp);
break;
}
sysctl_unlock();
/*
* Initialise unused ``struct vfsops'' fields, to use
* the vfs_std*() functions. Note, we need the mount
* and unmount operations, at the least. The check
* for vfsops available is just a debugging aid.
*/
KASSERT(vfc->vfc_vfsops != NULL,
("Filesystem %s has no vfsops", vfc->vfc_name));
/*
* Check the mount and unmount operations.
*/
vfsops = vfc->vfc_vfsops;
KASSERT(vfsops->vfs_mount != NULL,
("Filesystem %s has no mount op", vfc->vfc_name));
KASSERT(vfsops->vfs_unmount != NULL,
("Filesystem %s has no unmount op", vfc->vfc_name));
if (vfsops->vfs_root == NULL)
/* return file system's root vnode */
vfsops->vfs_root = vfs_stdroot;
if (vfsops->vfs_quotactl == NULL)
/* quota control */
vfsops->vfs_quotactl = vfs_stdquotactl;
if (vfsops->vfs_statfs == NULL)
/* return file system's status */
vfsops->vfs_statfs = vfs_stdstatfs;
if (vfsops->vfs_sync == NULL)
/*
* flush unwritten data (nosync)
* file systems can use vfs_stdsync
* explicitly by setting it in the
* vfsop vector.
*/
vfsops->vfs_sync = vfs_stdnosync;
if (vfsops->vfs_vget == NULL)
/* convert an inode number to a vnode */
vfsops->vfs_vget = vfs_stdvget;
if (vfsops->vfs_fhtovp == NULL)
/* turn an NFS file handle into a vnode */
vfsops->vfs_fhtovp = vfs_stdfhtovp;
if (vfsops->vfs_checkexp == NULL)
/* check if file system is exported */
vfsops->vfs_checkexp = vfs_stdcheckexp;
if (vfsops->vfs_init == NULL)
/* file system specific initialisation */
vfsops->vfs_init = vfs_stdinit;
if (vfsops->vfs_uninit == NULL)
/* file system specific uninitialisation */
vfsops->vfs_uninit = vfs_stduninit;
if (vfsops->vfs_extattrctl == NULL)
/* extended attribute control */
vfsops->vfs_extattrctl = vfs_stdextattrctl;
if (vfsops->vfs_sysctl == NULL)
vfsops->vfs_sysctl = vfs_stdsysctl;
/*
* Call init function for this VFS...
*/
(*(vfc->vfc_vfsops->vfs_init))(vfc);
return 0;
}