c1ecf66965
shutdown: During an unmount, wake up all the processes which are waiting to lock the socket for receive, and wait for them (and the process blocked in soreceive, if any) to go away before blowing away the socket and the mount structure.
204 lines
8.8 KiB
C
204 lines
8.8 KiB
C
/* $NetBSD: nfsmount.h,v 1.18 1999/07/04 19:56:00 sommerfeld Exp $ */
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)nfsmount.h 8.3 (Berkeley) 3/30/95
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*/
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#ifndef _NFS_NFSMOUNT_H_
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#define _NFS_NFSMOUNT_H_
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/*
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* Arguments to mount NFS
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*/
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#define NFS_ARGSVERSION 3 /* change when nfs_args changes */
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struct nfs_args {
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int version; /* args structure version number */
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struct sockaddr *addr; /* file server address */
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int addrlen; /* length of address */
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int sotype; /* Socket type */
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int proto; /* and Protocol */
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u_char *fh; /* File handle to be mounted */
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int fhsize; /* Size, in bytes, of fh */
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int flags; /* flags */
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int wsize; /* write size in bytes */
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int rsize; /* read size in bytes */
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int readdirsize; /* readdir size in bytes */
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int timeo; /* initial timeout in .1 secs */
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int retrans; /* times to retry send */
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int maxgrouplist; /* Max. size of group list */
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int readahead; /* # of blocks to readahead */
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int leaseterm; /* Term (sec) of lease */
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int deadthresh; /* Retrans threshold */
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char *hostname; /* server's name */
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};
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/*
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* NFS mount option flags (nm_flag)
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*/
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#define NFSMNT_SOFT 0x00000001 /* soft mount (hard is default) */
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#define NFSMNT_WSIZE 0x00000002 /* set write size */
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#define NFSMNT_RSIZE 0x00000004 /* set read size */
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#define NFSMNT_TIMEO 0x00000008 /* set initial timeout */
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#define NFSMNT_RETRANS 0x00000010 /* set number of request retries */
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#define NFSMNT_MAXGRPS 0x00000020 /* set maximum grouplist size */
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#define NFSMNT_INT 0x00000040 /* allow interrupts on hard mount */
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#define NFSMNT_NOCONN 0x00000080 /* Don't Connect the socket */
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#define NFSMNT_NQNFS 0x00000100 /* Use Nqnfs protocol */
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#define NFSMNT_NFSV3 0x00000200 /* Use NFS Version 3 protocol */
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#define NFSMNT_KERB 0x00000400 /* Use Kerberos authentication */
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#define NFSMNT_DUMBTIMR 0x00000800 /* Don't estimate rtt dynamically */
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#define NFSMNT_LEASETERM 0x00001000 /* set lease term (nqnfs) */
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#define NFSMNT_READAHEAD 0x00002000 /* set read ahead */
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#define NFSMNT_DEADTHRESH 0x00004000 /* set dead server retry thresh */
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#define NFSMNT_RESVPORT 0x00008000 /* Allocate a reserved port */
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#define NFSMNT_RDIRPLUS 0x00010000 /* Use Readdirplus for V3 */
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#define NFSMNT_READDIRSIZE 0x00020000 /* Set readdir size */
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#define NFSMNT_XLATECOOKIE 0x00040000 /* 32<->64 dir cookie xlation */
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/*
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* NFS internal flags (nm_iflag) */
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#define NFSMNT_HASWRITEVERF 0x00000001 /* Has write verifier for V3 */
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#define NFSMNT_GOTPATHCONF 0x00000002 /* Got the V3 pathconf info */
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#define NFSMNT_GOTFSINFO 0x00000004 /* Got the V3 fsinfo */
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#define NFSMNT_MNTD 0x00000008 /* Mnt server for mnt point */
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#define NFSMNT_DISMINPROG 0x00000010 /* Dismount in progress */
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#define NFSMNT_DISMNT 0x00000020 /* Dismounted */
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#define NFSMNT_SNDLOCK 0x00000040 /* Send socket lock */
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#define NFSMNT_WANTSND 0x00000080 /* Want above */
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#define NFSMNT_RCVLOCK 0x00000100 /* Rcv socket lock */
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#define NFSMNT_WANTRCV 0x00000200 /* Want above */
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#define NFSMNT_WAITAUTH 0x00000400 /* Wait for authentication */
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#define NFSMNT_HASAUTH 0x00000800 /* Has authenticator */
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#define NFSMNT_WANTAUTH 0x00001000 /* Wants an authenticator */
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#define NFSMNT_AUTHERR 0x00002000 /* Authentication error */
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#define NFSMNT_SWAPCOOKIE 0x00004000 /* XDR encode dir cookies */
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#ifdef _KERNEL
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/*
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* Mount structure.
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* One allocated on every NFS mount.
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* Holds NFS specific information for mount.
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*/
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struct nfsmount {
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int nm_flag; /* Flags for soft/hard... */
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struct mount *nm_mountp; /* Vfs structure for this filesystem */
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int nm_numgrps; /* Max. size of groupslist */
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u_char nm_fh[NFSX_V3FHMAX]; /* File handle of root dir */
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int nm_fhsize; /* Size of root file handle */
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struct socket *nm_so; /* Rpc socket */
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int nm_sotype; /* Type of socket */
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int nm_soproto; /* and protocol */
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int nm_soflags; /* pr_flags for socket protocol */
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struct mbuf *nm_nam; /* Addr of server */
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int nm_timeo; /* Init timer for NFSMNT_DUMBTIMR */
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int nm_retry; /* Max retries */
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int nm_srtt[4]; /* Timers for rpcs */
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int nm_sdrtt[4];
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int nm_sent; /* Request send count */
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int nm_cwnd; /* Request send window */
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int nm_timeouts; /* Request timeouts */
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int nm_deadthresh; /* Threshold of timeouts-->dead server*/
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int nm_rsize; /* Max size of read rpc */
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int nm_wsize; /* Max size of write rpc */
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int nm_readdirsize; /* Size of a readdir rpc */
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int nm_readahead; /* Num. of blocks to readahead */
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int nm_leaseterm; /* Term (sec) for NQNFS lease */
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CIRCLEQ_HEAD(, nfsnode) nm_timerhead; /* Head of lease timer queue */
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struct vnode *nm_inprog; /* Vnode in prog by nqnfs_clientd() */
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uid_t nm_authuid; /* Uid for authenticator */
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int nm_authtype; /* Authenticator type */
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int nm_authlen; /* and length */
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char *nm_authstr; /* Authenticator string */
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char *nm_verfstr; /* and the verifier */
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int nm_verflen;
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u_char nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */
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NFSKERBKEY_T nm_key; /* and the session key */
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int nm_numuids; /* Number of nfsuid mappings */
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TAILQ_HEAD(, nfsuid) nm_uidlruhead; /* Lists of nfsuid mappings */
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LIST_HEAD(, nfsuid) nm_uidhashtbl[NFS_MUIDHASHSIZ];
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TAILQ_HEAD(, buf) nm_bufq; /* async io buffer queue */
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short nm_bufqlen; /* number of buffers in queue */
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short nm_bufqwant; /* process wants to add to the queue */
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int nm_bufqiods; /* number of iods processing queue */
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u_int64_t nm_maxfilesize; /* maximum file size */
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int nm_iflag; /* internal flags */
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int nm_waiters; /* number of waiting listeners.. */
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};
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/*
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* Convert mount ptr to nfsmount ptr.
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*/
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#define VFSTONFS(mp) ((struct nfsmount *)((mp)->mnt_data))
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/*
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* Prototypes for NFS mount operations
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*/
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int nfs_mount __P((struct mount *mp, const char *path, void *data,
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struct nameidata *ndp, struct proc *p));
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int mountnfs __P((struct nfs_args *argp, struct mount *mp,
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struct mbuf *nam, const char *pth, const char *hst,
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struct vnode **vpp, struct proc *p));
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int nfs_mountroot __P((void));
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void nfs_decode_args __P((struct nfsmount *, struct nfs_args *));
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int nfs_start __P((struct mount *mp, int flags, struct proc *p));
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int nfs_unmount __P((struct mount *mp, int mntflags, struct proc *p));
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int nfs_root __P((struct mount *mp, struct vnode **vpp));
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int nfs_quotactl __P((struct mount *mp, int cmds, uid_t uid, caddr_t arg,
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struct proc *p));
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int nfs_statfs __P((struct mount *mp, struct statfs *sbp, struct proc *p));
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int nfs_sync __P((struct mount *mp, int waitfor, struct ucred *cred,
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struct proc *p));
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int nfs_vget __P((struct mount *, ino_t, struct vnode **));
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int nfs_fhtovp __P((struct mount *mp, struct fid *fhp, struct vnode **vpp));
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int nfs_checkexp __P((struct mount *mp, struct mbuf *nam, int *exflagsp,
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struct ucred **credanonp));
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int nfs_vptofh __P((struct vnode *vp, struct fid *fhp));
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int nfs_fsinfo __P((struct nfsmount *, struct vnode *, struct ucred *,
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struct proc *));
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void nfs_vfs_init __P((void));
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/*
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* Prototypes for miscellaneous exported NFS functions.
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*/
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void nfs_init __P((void));
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#endif /* _KERNEL */
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#endif
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