1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef _SYS_NETEXPORT_H_ 38 #define _SYS_NETEXPORT_H_ 39 40 /* 41 * This file must be included after net/radix.h so that "struct radix_node" 42 * is defined. 43 */ 44 #ifdef _KERNEL 45 /* 46 * Network address lookup element 47 */ 48 struct netcred { 49 struct radix_node netc_rnodes[2]; 50 uint64_t netc_exflags; 51 struct ucred *netc_anon; 52 int netc_numsecflavors; 53 int netc_secflavors[MAXSECFLAVORS]; 54 }; 55 56 /* 57 * Network export information 58 * ne_defexported - Protected by mnt_explock. 59 * ne4 - Protected by mnt_explock. 60 * ne6 - Protected by mnt_explock. 61 * The following fields are used by the pNFS server's replenisher process. 62 * ne_pnfsnumfile - Protected by the ne_mtx mutex. 63 * ne_pnfsnextfile - Protected by the vnode lock for the numfiles directory. 64 * ne_pnfsnumcnt - Handled as an atomic. 65 * (Although this value doesn't need to be exact, so using 66 * an atomic is not really necessary.) 67 */ 68 struct netexport { 69 #define ne_startzero ne_defexported 70 struct netcred ne_defexported; /* Default export */ 71 struct radix_node_head *ne4; 72 struct radix_node_head *ne6; 73 #define ne_endzero ne_mtx 74 struct mtx ne_mtx; /* For ne_pnfsnumfile. */ 75 struct vnode *ne_pnfsnumfile; 76 uint64_t ne_pnfsnextfile; 77 u_int ne_ref; /* Refcount for structure */ 78 u_int ne_pnfsnumcnt; /* For stats, not protected. */ 79 }; 80 81 #define MNTEXP_LOCK(n) mtx_lock(&(n)->ne_mtx) 82 #define MNTEXP_UNLOCK(n) mtx_unlock(&(n)->ne_mtx) 83 #define MNTEXP_MTX(n) (&(n)->ne_mtx) 84 85 #define PNFSD_START ((struct vnode *)-1) 86 #define PNFSD_STOP ((struct vnode *)-2) 87 #define PNFSD_STOPPED ((struct vnode *)-3) 88 89 #endif /* _KERNEL */ 90 91 #endif /* !_SYS_NETEXPORT_H_ */ 92