1 /* 2 * Copyright (c) 1989 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. 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 * from: @(#)nfsmount.h 7.7 (Berkeley) 4/16/91 37 * $Id: nfsmount.h,v 1.2 1993/05/20 03:19:09 cgd Exp $ 38 */ 39 40 #ifndef _NFS_NFSMOUNT_H_ 41 #define _NFS_NFSMOUNT_H_ 42 43 /* 44 * Mount structure. 45 * One allocated on every NFS mount. 46 * Holds NFS specific information for mount. 47 */ 48 struct nfsmount { 49 int nm_flag; /* Flags for soft/hard... */ 50 struct mount *nm_mountp; /* Vfs structure for this filesystem */ 51 nfsv2fh_t nm_fh; /* File handle of root dir */ 52 struct socket *nm_so; /* Rpc socket */ 53 int nm_sotype; /* Type of socket */ 54 int nm_soproto; /* and protocol */ 55 int nm_soflags; /* pr_flags for socket protocol */ 56 struct mbuf *nm_nam; /* Addr of server */ 57 short nm_retry; /* Max retry count */ 58 short nm_rexmit; /* Rexmit on previous request */ 59 short nm_rtt; /* Round trip timer ticks @ NFS_HZ */ 60 short nm_rto; /* Current timeout */ 61 short nm_srtt; /* Smoothed round trip time */ 62 short nm_rttvar; /* RTT variance */ 63 short nm_currto; /* Current rto of any nfsmount */ 64 short nm_currexmit; /* Max rexmit count of nfsmounts */ 65 short nm_sent; /* Request send count */ 66 short nm_window; /* Request send window (max) */ 67 short nm_winext; /* Window incremental value */ 68 short nm_ssthresh; /* Slowstart threshold */ 69 short nm_salen; /* Actual length of nm_sockaddr */ 70 int nm_rsize; /* Max size of read rpc */ 71 int nm_wsize; /* Max size of write rpc */ 72 }; 73 74 #ifdef KERNEL 75 /* 76 * Convert mount ptr to nfsmount ptr. 77 */ 78 #define VFSTONFS(mp) ((struct nfsmount *)((mp)->mnt_data)) 79 #endif /* KERNEL */ 80 81 /* 82 * Prototypes for NFS mount operations 83 */ 84 int nfs_mount __P(( 85 struct mount *mp, 86 char *path, 87 caddr_t data, 88 struct nameidata *ndp, 89 struct proc *p)); 90 int nfs_start __P(( 91 struct mount *mp, 92 int flags, 93 struct proc *p)); 94 int nfs_unmount __P(( 95 struct mount *mp, 96 int mntflags, 97 struct proc *p)); 98 int nfs_root __P(( 99 struct mount *mp, 100 struct vnode **vpp)); 101 int nfs_quotactl __P(( 102 struct mount *mp, 103 int cmds, 104 int uid, /* should be uid_t */ 105 caddr_t arg, 106 struct proc *p)); 107 int nfs_statfs __P(( 108 struct mount *mp, 109 struct statfs *sbp, 110 struct proc *p)); 111 int nfs_sync __P(( 112 struct mount *mp, 113 int waitfor)); 114 int nfs_fhtovp __P(( 115 struct mount *mp, 116 struct fid *fhp, 117 struct vnode **vpp)); 118 int nfs_vptofh __P(( 119 struct vnode *vp, 120 struct fid *fhp)); 121 int nfs_init __P(()); 122 123 #endif /* !_NFS_NFSMOUNT_H_ */ 124