d2ce00e9a6
This was originally allowed by3cea29603d(2011). But it got broken by693957f886(2016) and apparently nobody noticed. MFC after: 1 week Sponsored by: Axcient Reviewed by: rmacklem, ken Differential Revision: https://reviews.freebsd.org/D37589
154 lines
4.9 KiB
C
154 lines
4.9 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Rick Macklem at The University of Guelph.
|
|
*
|
|
* 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.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS 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.
|
|
*
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_nfs.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/sysproto.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/priv.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/module.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/syscall.h>
|
|
#include <sys/sysproto.h>
|
|
|
|
#include <security/audit/audit.h>
|
|
|
|
#include <nfs/nfssvc.h>
|
|
|
|
static struct syscall_helper_data nfssvc_syscalls[] = {
|
|
SYSCALL_INIT_HELPER(nfssvc),
|
|
SYSCALL_INIT_LAST
|
|
};
|
|
|
|
/*
|
|
* This tiny module simply handles the nfssvc() system call. The other
|
|
* nfs modules that use the system call register themselves by setting
|
|
* the nfsd_call_xxx function pointers non-NULL.
|
|
*/
|
|
|
|
int (*nfsd_call_nfsserver)(struct thread *, struct nfssvc_args *) = NULL;
|
|
int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *) = NULL;
|
|
int (*nfsd_call_nfscl)(struct thread *, struct nfssvc_args *) = NULL;
|
|
int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *) = NULL;
|
|
|
|
/*
|
|
* Nfs server pseudo system call for the nfsd's
|
|
*/
|
|
int
|
|
sys_nfssvc(struct thread *td, struct nfssvc_args *uap)
|
|
{
|
|
int error;
|
|
|
|
KASSERT(!mtx_owned(&Giant), ("nfssvc(): called with Giant"));
|
|
|
|
AUDIT_ARG_CMD(uap->flag);
|
|
|
|
/* Allow anyone to get the stats. */
|
|
if ((uap->flag & ~(NFSSVC_GETSTATS | NFSSVC_NEWSTRUCT)) != 0) {
|
|
error = priv_check(td, PRIV_NFS_DAEMON);
|
|
if (error != 0)
|
|
return (error);
|
|
}
|
|
error = EINVAL;
|
|
if ((uap->flag & (NFSSVC_ADDSOCK | NFSSVC_OLDNFSD | NFSSVC_NFSD)) &&
|
|
nfsd_call_nfsserver != NULL)
|
|
error = (*nfsd_call_nfsserver)(td, uap);
|
|
else if ((uap->flag & (NFSSVC_CBADDSOCK | NFSSVC_NFSCBD |
|
|
NFSSVC_DUMPMNTOPTS | NFSSVC_FORCEDISM)) && nfsd_call_nfscl != NULL)
|
|
error = (*nfsd_call_nfscl)(td, uap);
|
|
else if ((uap->flag & (NFSSVC_IDNAME | NFSSVC_GETSTATS |
|
|
NFSSVC_GSSDADDPORT | NFSSVC_GSSDADDFIRST | NFSSVC_GSSDDELETEALL |
|
|
NFSSVC_NFSUSERDPORT | NFSSVC_NFSUSERDDELPORT)) &&
|
|
nfsd_call_nfscommon != NULL)
|
|
error = (*nfsd_call_nfscommon)(td, uap);
|
|
else if ((uap->flag & (NFSSVC_NFSDNFSD | NFSSVC_NFSDADDSOCK |
|
|
NFSSVC_PUBLICFH | NFSSVC_V4ROOTEXPORT | NFSSVC_NOPUBLICFH |
|
|
NFSSVC_STABLERESTART | NFSSVC_ADMINREVOKE |
|
|
NFSSVC_DUMPCLIENTS | NFSSVC_DUMPLOCKS | NFSSVC_BACKUPSTABLE |
|
|
NFSSVC_SUSPENDNFSD | NFSSVC_RESUMENFSD | NFSSVC_PNFSDS)) &&
|
|
nfsd_call_nfsd != NULL)
|
|
error = (*nfsd_call_nfsd)(td, uap);
|
|
if (error == EINTR || error == ERESTART)
|
|
error = 0;
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Called once to initialize data structures...
|
|
*/
|
|
static int
|
|
nfssvc_modevent(module_t mod, int type, void *data)
|
|
{
|
|
int error = 0;
|
|
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
error = syscall_helper_register(nfssvc_syscalls,
|
|
SY_THR_STATIC_KLD);
|
|
break;
|
|
|
|
case MOD_UNLOAD:
|
|
if (nfsd_call_nfsserver != NULL || nfsd_call_nfscommon != NULL
|
|
|| nfsd_call_nfscl != NULL || nfsd_call_nfsd != NULL) {
|
|
error = EBUSY;
|
|
break;
|
|
}
|
|
syscall_helper_unregister(nfssvc_syscalls);
|
|
break;
|
|
default:
|
|
error = EOPNOTSUPP;
|
|
break;
|
|
}
|
|
return error;
|
|
}
|
|
static moduledata_t nfssvc_mod = {
|
|
"nfssvc",
|
|
nfssvc_modevent,
|
|
NULL,
|
|
};
|
|
DECLARE_MODULE(nfssvc, nfssvc_mod, SI_SUB_VFS, SI_ORDER_ANY);
|
|
|
|
/* So that loader and kldload(2) can find us, wherever we are.. */
|
|
MODULE_VERSION(nfssvc, 1);
|