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Annotation of Net2/nfs/nfsmount.h, revision 1.1

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

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