368 lines
15 KiB
C
368 lines
15 KiB
C
/* $NetBSD: nfs_var.h,v 1.94 2015/07/15 03:28:55 manu Exp $ */
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/*-
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* Copyright (c) 1996 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* XXX needs <nfs/rpcv2.h> and <nfs/nfs.h> because of typedefs
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*/
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#ifdef _KERNEL
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#include <sys/mallocvar.h>
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#include <sys/pool.h>
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struct vnode;
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struct uio;
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struct proc;
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struct buf;
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struct nfs_diskless;
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struct sockaddr_in;
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struct nfs_dlmount;
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struct vnode;
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struct nfsd;
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struct mbuf;
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struct file;
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struct nfssvc_sock;
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struct nfsmount;
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struct socket;
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struct nfsreq;
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struct vattr;
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struct nameidata;
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struct nfsnode;
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struct sillyrename;
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struct componentname;
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struct nfsd_srvargs;
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struct nfsrv_descript;
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struct nfs_fattr;
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struct nfsdircache;
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union nethostaddr;
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/* nfs_bio.c */
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int nfs_bioread(struct vnode *, struct uio *, int, kauth_cred_t, int);
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struct buf *nfs_getcacheblk(struct vnode *, daddr_t, int, struct lwp *);
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int nfs_vinvalbuf(struct vnode *, int, kauth_cred_t, struct lwp *, int);
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int nfs_flushstalebuf(struct vnode *, kauth_cred_t, struct lwp *, int);
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#define NFS_FLUSHSTALEBUF_MYWRITE 1 /* assume writes are ours */
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int nfs_asyncio(struct buf *);
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int nfs_doio(struct buf *);
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/* nfs_boot.c */
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/* see nfsdiskless.h */
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/* nfs_kq.c */
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void nfs_kqinit(void);
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void nfs_kqfini(void);
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/* nfs_node.c */
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void nfs_node_init(void);
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void nfs_node_done(void);
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int nfs_nget1(struct mount *, nfsfh_t *, int, struct nfsnode **, int);
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#define nfs_nget(mp, fhp, fhsize, npp) \
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nfs_nget1((mp), (fhp), (fhsize), (npp), 0)
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/* nfs_vnops.c */
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int nfs_null(struct vnode *, kauth_cred_t, struct lwp *);
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int nfs_setattrrpc(struct vnode *, struct vattr *, kauth_cred_t, struct lwp *);
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int nfs_readlinkrpc(struct vnode *, struct uio *, kauth_cred_t);
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int nfs_readrpc(struct vnode *, struct uio *);
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int nfs_writerpc(struct vnode *, struct uio *, int *, bool, bool *);
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int nfs_mknodrpc(struct vnode *, struct vnode **, struct componentname *,
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struct vattr *);
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int nfs_removeit(struct sillyrename *);
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int nfs_removerpc(struct vnode *, const char *, int, kauth_cred_t,
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struct lwp *);
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int nfs_renameit(struct vnode *, struct componentname *, struct sillyrename *);
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int nfs_renamerpc(struct vnode *, const char *, int, struct vnode *,
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const char *, int, kauth_cred_t, struct lwp *);
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int nfs_readdirrpc(struct vnode *, struct uio *, kauth_cred_t);
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int nfs_readdirplusrpc(struct vnode *, struct uio *, kauth_cred_t);
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int nfs_sillyrename(struct vnode *, struct vnode *, struct componentname *,
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bool);
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int nfs_lookitup(struct vnode *, const char *, int, kauth_cred_t,
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struct lwp *, struct nfsnode **);
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int nfs_commit(struct vnode *, off_t, uint32_t, struct lwp *);
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int nfs_flush(struct vnode *, kauth_cred_t, int, struct lwp *, int);
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/* nfs_serv.c */
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int nfsrv3_access(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_getattr(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_setattr(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_lookup(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_readlink(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_read(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_write(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_writegather(struct nfsrv_descript **, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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void nfsrvw_coalesce(struct nfsrv_descript *, struct nfsrv_descript *);
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int nfsrv_create(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_mknod(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_remove(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_rename(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_link(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_symlink(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_mkdir(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_rmdir(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_readdir(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_readdirplus(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_commit(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_statfs(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_fsinfo(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_pathconf(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_null(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_noop(struct nfsrv_descript *, struct nfssvc_sock *,
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struct lwp *, struct mbuf **);
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int nfsrv_access(struct vnode *, int, kauth_cred_t, int, struct lwp *, int);
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/* nfs_socket.c */
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int nfs_connect(struct nfsmount *, struct nfsreq *, struct lwp *);
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int nfs_reconnect(struct nfsreq *);
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void nfs_disconnect(struct nfsmount *);
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void nfs_safedisconnect(struct nfsmount *);
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int nfs_send(struct socket *, struct mbuf *, struct mbuf *, struct nfsreq *,
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struct lwp *);
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int nfs_request(struct nfsnode *, struct mbuf *, int, struct lwp *,
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kauth_cred_t, struct mbuf **, struct mbuf **, char **, int *);
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int nfs_rephead(int, struct nfsrv_descript *, struct nfssvc_sock *,
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int, int, u_quad_t *, struct mbuf **, struct mbuf **, char **);
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void nfs_timer(void *);
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void nfs_timer_init(void);
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void nfs_timer_fini(void);
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void nfs_timer_start(void);
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void nfs_timer_srvinit(bool (*)(void));
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void nfs_timer_srvfini(void);
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int nfs_sigintr(struct nfsmount *, struct nfsreq *, struct lwp *);
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int nfs_getreq(struct nfsrv_descript *, struct nfsd *, int);
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int nfs_msg(struct lwp *, const char *, const char *);
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void nfsrv_soupcall(struct socket *, void *, int, int);
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void nfsrv_rcv(struct nfssvc_sock *);
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int nfsrv_getstream(struct nfssvc_sock *, int);
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int nfsrv_dorec(struct nfssvc_sock *, struct nfsd *, struct nfsrv_descript **,
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bool *);
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void nfsrv_wakenfsd(struct nfssvc_sock *);
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int nfsdsock_lock(struct nfssvc_sock *, bool);
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void nfsdsock_unlock(struct nfssvc_sock *);
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int nfsdsock_drain(struct nfssvc_sock *);
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int nfsdsock_sendreply(struct nfssvc_sock *, struct nfsrv_descript *);
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void nfsdreq_init(void);
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void nfsdreq_fini(void);
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struct nfsrv_descript *nfsdreq_alloc(void);
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void nfsdreq_free(struct nfsrv_descript *);
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bool nfsrv_timer(void);
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int nfs_rcvlock(struct nfsmount *, struct nfsreq *);
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void nfs_rcvunlock(struct nfsmount *);
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void nfsdsock_setbits(struct nfssvc_sock *, int);
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void nfsdsock_clearbits(struct nfssvc_sock *, int);
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bool nfsdsock_testbits(struct nfssvc_sock *, int);
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/*
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* Estimate rto for an nfs rpc sent via. an unreliable datagram.
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* Use the mean and mean deviation of rtt for the appropriate type of rpc
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* for the frequent rpcs and a default for the others.
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* The justification for doing "other" this way is that these rpcs
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* happen so infrequently that timer est. would probably be stale.
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* Also, since many of these rpcs are
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* non-idempotent, a conservative timeout is desired.
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* getattr, lookup - A+2D
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* read, write - A+4D
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* other - nm_timeo
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*/
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#define NFS_RTO(n, t) \
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((t) == 0 ? (n)->nm_timeo : \
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((t) < 3 ? \
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(((((n)->nm_srtt[t-1] + 3) >> 2) + (n)->nm_sdrtt[t-1] + 1) >> 1) : \
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((((n)->nm_srtt[t-1] + 7) >> 3) + (n)->nm_sdrtt[t-1] + 1)))
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#define NFS_SRTT(r) (r)->r_nmp->nm_srtt[nfs_proct[(r)->r_procnum] - 1]
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#define NFS_SDRTT(r) (r)->r_nmp->nm_sdrtt[nfs_proct[(r)->r_procnum] - 1]
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extern int nfsrtton;
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extern struct nfsrtt nfsrtt;
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extern const int nfs_proct[];
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extern const struct timeval nfs_err_interval;
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extern struct timeval nfs_reply_last_err_time;
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extern struct timeval nfs_timer_last_err_time;
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/* nfs_srvcache.c */
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void nfsrv_initcache(void);
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void nfsrv_finicache(void);
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int nfsrv_getcache(struct nfsrv_descript *, struct nfssvc_sock *,
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struct mbuf **);
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void nfsrv_updatecache(struct nfsrv_descript *, int, struct mbuf *);
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void nfsrv_cleancache(void);
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/* nfs_subs.c */
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struct mbuf *nfsm_reqh(struct nfsnode *, u_long, int, char **);
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struct mbuf *nfsm_rpchead(kauth_cred_t, int, int, int, int, char *, int,
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char *, struct mbuf *, int, struct mbuf **, u_int32_t *);
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int nfsm_mbuftouio(struct mbuf **, struct uio *, int, char **);
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int nfsm_uiotombuf(struct uio *, struct mbuf **, int, char **);
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int nfsm_disct(struct mbuf **, char **, int, int, char **);
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int nfs_adv(struct mbuf **, char **, int, int);
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int nfsm_strtmbuf(struct mbuf **, char **, const char *, long);
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u_long nfs_dirhash(off_t);
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void nfs_initdircache(struct vnode *);
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void nfs_initdirxlatecookie(struct vnode *);
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struct nfsdircache *nfs_searchdircache(struct vnode *, off_t, int, int *);
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struct nfsdircache *nfs_enterdircache(struct vnode *, off_t, off_t, int,
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daddr_t);
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void nfs_putdircache(struct nfsnode *, struct nfsdircache *);
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void nfs_invaldircache(struct vnode *, int);
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#define NFS_INVALDIRCACHE_FORCE 1
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#define NFS_INVALDIRCACHE_KEEPEOF 2
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void nfs_init(void);
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void nfs_fini(void);
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int nfsm_loadattrcache(struct vnode **, struct mbuf **, char **,
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struct vattr *, int flags);
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int nfs_loadattrcache(struct vnode **, struct nfs_fattr *, struct vattr *,
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int flags);
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int nfs_getattrcache(struct vnode *, struct vattr *);
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void nfs_delayedtruncate(struct vnode *);
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int nfs_check_wccdata(struct nfsnode *, const struct timespec *,
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struct timespec *, bool);
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int nfs_namei(struct nameidata *, nfsrvfh_t *, uint32_t, struct nfssvc_sock *,
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struct mbuf *, struct mbuf **, char **, struct vnode **, struct lwp *,
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int, int);
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void nfs_zeropad(struct mbuf *, int, int);
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void nfsm_srvwcc(struct nfsrv_descript *, int, struct vattr *, int,
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struct vattr *, struct mbuf **, char **);
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void nfsm_srvpostopattr(struct nfsrv_descript *, int, struct vattr *,
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struct mbuf **, char **);
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void nfsm_srvfattr(struct nfsrv_descript *, struct vattr *, struct nfs_fattr *);
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int nfsrv_fhtovp(nfsrvfh_t *, int, struct vnode **, kauth_cred_t,
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struct nfssvc_sock *, struct mbuf *, int *, int, int);
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int nfs_ispublicfh(const nfsrvfh_t *);
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int netaddr_match(int, union nethostaddr *, struct mbuf *);
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time_t nfs_attrtimeo(struct nfsmount *, struct nfsnode *);
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/* flags for nfs_loadattrcache and friends */
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#define NAC_NOTRUNC 1 /* don't truncate file size */
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void nfs_clearcommit(struct mount *);
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void nfs_merge_commit_ranges(struct vnode *);
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int nfs_in_committed_range(struct vnode *, off_t, off_t);
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int nfs_in_tobecommitted_range(struct vnode *, off_t, off_t);
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void nfs_add_committed_range(struct vnode *, off_t, off_t);
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void nfs_del_committed_range(struct vnode *, off_t, off_t);
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void nfs_add_tobecommitted_range(struct vnode *, off_t, off_t);
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void nfs_del_tobecommitted_range(struct vnode *, off_t, off_t);
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int nfsrv_errmap(struct nfsrv_descript *, int);
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void nfs_cookieheuristic(struct vnode *, int *, struct lwp *, kauth_cred_t);
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u_int32_t nfs_getxid(void);
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void nfs_renewxid(struct nfsreq *);
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int nfsrv_composefh(struct vnode *, nfsrvfh_t *, bool);
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int nfsrv_comparefh(const nfsrvfh_t *, const nfsrvfh_t *);
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void nfsrv_copyfh(nfsrvfh_t *, const nfsrvfh_t *);
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extern const enum vtype nv2tov_type[8];
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extern const enum vtype nv3tov_type[8];
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extern u_int32_t rpc_reply, rpc_msgdenied, rpc_mismatch, rpc_vers,
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rpc_auth_unix, rpc_msgaccepted, rpc_call, rpc_autherr,
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rpc_auth_kerb;
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extern u_int32_t nfs_prog;
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extern const int nfsv3_procid[NFS_NPROCS];
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extern int nfs_ticks;
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/* nfs_syscalls.c */
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struct sys_getfh_args;
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struct sys_nfssvc_args;
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int sys_getfh(struct lwp *, const struct sys_getfh_args *, register_t *);
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int sys_nfssvc(struct lwp *, const struct sys_nfssvc_args *, register_t *);
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int nfssvc_addsock(struct file *, struct mbuf *);
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void nfsrv_zapsock(struct nfssvc_sock *);
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void nfsrv_slpderef(struct nfssvc_sock *);
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void nfsrv_init(int);
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void nfsrv_fini(void);
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void nfs_iodinit(void);
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void nfs_iodfini(void);
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int nfs_iodbusy(struct nfsmount *);
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int nfs_set_niothreads(int);
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int nfs_getauth(struct nfsmount *, struct nfsreq *, kauth_cred_t, char **,
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int *, char *, int *, NFSKERBKEY_T);
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int nfs_getnickauth(struct nfsmount *, kauth_cred_t, char **, int *, char *,
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int);
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int nfs_savenickauth(struct nfsmount *, kauth_cred_t, int, NFSKERBKEY_T,
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struct mbuf **, char **, struct mbuf *);
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/*
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* Backend copyin/out functions for nfssvc(2), so that netbsd32 can
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* easily access NFS. Each operation either must perform a copyin or
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* copyout of the right data for the emulation. exp_in() takes a count
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* of the number of export_args to copyin, and order arguments for
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* func(dst, src).
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*/
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struct nfssvc_copy_ops {
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int (*addsock_in)(struct nfsd_args *, const void *);
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int (*setexports_in)(struct mountd_exports_list *, const void *);
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int (*nsd_in)(struct nfsd_srvargs *, const void *);
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int (*nsd_out)(void *, const struct nfsd_srvargs *);
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int (*exp_in)(struct export_args *, const void *, size_t);
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};
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int do_nfssvc(struct nfssvc_copy_ops *, struct lwp *, int, void *, register_t *);
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/* nfs_export.c */
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extern struct nfs_public nfs_pub;
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int mountd_set_exports_list(const struct mountd_exports_list *, struct lwp *,
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struct mount *);
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int netexport_check(const fsid_t *, struct mbuf *, struct mount **, int *,
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kauth_cred_t *);
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void netexport_rdlock(void);
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void netexport_rdunlock(void);
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void netexport_init(void);
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void netexport_fini(void);
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bool netexport_hasexports(void);
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#endif /* _KERNEL */
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