206 lines
8.4 KiB
C
206 lines
8.4 KiB
C
/* $NetBSD: nfsmount.h,v 1.51 2011/01/22 22:26:10 matt 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. 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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#if defined(_KERNEL) && !defined(NFS_ARGS_ONLY)
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#include <sys/condvar.h>
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#include <sys/rwlock.h>
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#include <sys/mutex.h>
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#include <sys/disk.h>
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#include <sys/rbtree.h>
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#endif
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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; /* Ignored; 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 /* Ignored; 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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#define NFSMNT_NOAC 0x00080000 /* Turn off attribute cache */
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#define NFSMNT_BITS "\177\20" \
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"b\00soft\0b\01wsize\0b\02rsize\0b\03timeo\0" \
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"b\04retrans\0b\05maxgrps\0b\06intr\0b\07noconn\0" \
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"b\10nqnfs\0b\11nfsv3\0b\12kerb\0b\13dumbtimr\0" \
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"b\14leaseterm\0b\15readahead\0b\16deadthresh\0b\17resvport\0" \
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"b\20rdirplus\0b\21readdirsize\0b\22xlatecookie\0b\23noac\0"
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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_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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#define NFSMNT_STALEWRITEVERF 0x00008000 /* Write verifier is changing */
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#define NFSMNT_WCCKLUDGE 0x00010000 /* see nfs_check_wccdata() */
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#if defined(_KERNEL) && !defined(NFS_ARGS_ONLY)
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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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kmutex_t nm_lock; /* Lock for this structure */
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krwlock_t nm_rbtlock; /* Lock for the rbtree */
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kcondvar_t nm_rcvcv;
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kcondvar_t nm_sndcv;
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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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struct vnode *nm_vnode;
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struct socket *nm_so; /* Rpc socket */
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struct rb_tree nm_rbtree; /* red/black tree by fh for nfsnode */
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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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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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krwlock_t nm_writeverflock; /* lock for below */
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u_char nm_writeverf[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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int nm_bufqlen; /* number of buffers in queue */
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kcondvar_t nm_aiocv;
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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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kcondvar_t nm_disconcv;
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long nm_wcckludgetime; /* see nfs_check_wccdata() */
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struct io_stats *nm_stats; /* per nfs mount statistics */
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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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VFS_PROTOS(nfs);
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int mountnfs(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 lwp *p);
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void nfs_decode_args(struct nfsmount *, struct nfs_args *,
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struct lwp *l);
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int nfs_fsinfo(struct nfsmount *, struct vnode *, kauth_cred_t,
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struct lwp *);
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void nfs_vfs_init(void);
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void nfs_vfs_done(void);
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#endif /* _KERNEL */
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#endif
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