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 * @(#)nfsmount.h 7.7 (Berkeley) 4/16/91 37 */ 38 39 #ifndef _NFS_NFSMOUNT_H_ 40 #define _NFS_NFSMOUNT_H_ 41 42 /* 43 * Mount structure. 44 * One allocated on every NFS mount. 45 * Holds NFS specific information for mount. 46 */ 47 struct nfsmount { 48 int nm_flag; /* Flags for soft/hard... */ 49 struct mount *nm_mountp; /* Vfs structure for this filesystem */ 50 nfsv2fh_t nm_fh; /* File handle of root dir */ 51 struct socket *nm_so; /* Rpc socket */ 52 int nm_sotype; /* Type of socket */ 53 int nm_soproto; /* and protocol */ 54 int nm_soflags; /* pr_flags for socket protocol */ 55 struct mbuf *nm_nam; /* Addr of server */ 56 short nm_retry; /* Max retry count */ 57 short nm_rexmit; /* Rexmit on previous request */ 58 short nm_rtt; /* Round trip timer ticks @ NFS_HZ */ 59 short nm_rto; /* Current timeout */ 60 short nm_srtt; /* Smoothed round trip time */ 61 short nm_rttvar; /* RTT variance */ 62 short nm_currto; /* Current rto of any nfsmount */ 63 short nm_currexmit; /* Max rexmit count of nfsmounts */ 64 short nm_sent; /* Request send count */ 65 short nm_window; /* Request send window (max) */ 66 short nm_winext; /* Window incremental value */ 67 short nm_ssthresh; /* Slowstart threshold */ 68 short nm_salen; /* Actual length of nm_sockaddr */ 69 int nm_rsize; /* Max size of read rpc */ 70 int nm_wsize; /* Max size of write rpc */ 71 }; 72 73 #ifdef KERNEL 74 /* 75 * Convert mount ptr to nfsmount ptr. 76 */ 77 #define VFSTONFS(mp) ((struct nfsmount *)((mp)->mnt_data)) 78 #endif /* KERNEL */ 79 80 /* 81 * Prototypes for NFS mount operations 82 */ 83 int nfs_mount __P(( 84 struct mount *mp, 85 char *path, 86 caddr_t data, 87 struct nameidata *ndp, 88 struct proc *p)); 89 int nfs_start __P(( 90 struct mount *mp, 91 int flags, 92 struct proc *p)); 93 int nfs_unmount __P(( 94 struct mount *mp, 95 int mntflags, 96 struct proc *p)); 97 int nfs_root __P(( 98 struct mount *mp, 99 struct vnode **vpp)); 100 int nfs_quotactl __P(( 101 struct mount *mp, 102 int cmds, 103 int uid, /* should be uid_t */ 104 caddr_t arg, 105 struct proc *p)); 106 int nfs_statfs __P(( 107 struct mount *mp, 108 struct statfs *sbp, 109 struct proc *p)); 110 int nfs_sync __P(( 111 struct mount *mp, 112 int waitfor)); 113 int nfs_fhtovp __P(( 114 struct mount *mp, 115 struct fid *fhp, 116 struct vnode **vpp)); 117 int nfs_vptofh __P(( 118 struct vnode *vp, 119 struct fid *fhp)); 120 int nfs_init __P(()); 121 122 #endif /* !_NFS_NFSMOUNT_H_ */ 123