/* * Copyright (c) 1989, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Rick Macklem at The University of Guelph. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)nfs.h 8.1 (Berkeley) 6/10/93 * $Id: nfs.h,v 1.5 1994/10/02 17:26:54 phk Exp $ */ #ifndef _NFS_NFS_H_ #define _NFS_NFS_H_ /* * Tunable constants for nfs */ #define NFS_MAXIOVEC 34 #define NFS_HZ 25 /* Ticks per second for NFS timeouts */ #define NFS_TIMEO (1*NFS_HZ) /* Default timeout = 1 second */ #define NFS_MINTIMEO (1*NFS_HZ) /* Min timeout to use */ #define NFS_MAXTIMEO (60*NFS_HZ) /* Max timeout to backoff to */ #define NFS_MINIDEMTIMEO (5*NFS_HZ) /* Min timeout for non-idempotent ops*/ #define NFS_MAXREXMIT 100 /* Stop counting after this many */ #define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */ #define NFS_RETRANS 10 /* Num of retrans for soft mounts */ #define NFS_MAXGRPS 16 /* Max. size of groups list */ #ifndef NFS_MINATTRTIMO #define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */ #endif #ifndef NFS_MAXATTRTIMO #define NFS_MAXATTRTIMO 60 #endif #define NFS_WSIZE 8192 /* Def. write data size <= 8192 */ #define NFS_RSIZE 8192 /* Def. read data size <= 8192 */ #define NFS_DEFRAHEAD 1 /* Def. read ahead # blocks */ #define NFS_MAXRAHEAD 4 /* Max. read ahead # blocks */ #define NFS_MAXREADDIR NFS_MAXDATA /* Max. size of directory read */ #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ #define NFS_MAXASYNCDAEMON 20 /* Max. number async_daemons runable */ #define NFS_DIRBLKSIZ 1024 /* Size of an NFS directory block */ #define NMOD(a) ((a) % nfs_asyncdaemons) /* * Set the attribute timeout based on how recently the file has been modified. */ #define NFS_ATTRTIMEO(np) \ ((((np)->n_flag & NMODIFIED) || \ (time.tv_sec - (np)->n_mtime) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \ ((time.tv_sec - (np)->n_mtime) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \ (time.tv_sec - (np)->n_mtime) / 10)) /* * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs * should ever try and use it. */ struct nfsd_args { int sock; /* Socket to serve */ caddr_t name; /* Client address for connection based sockets */ int namelen; /* Length of name */ }; struct nfsd_srvargs { struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ uid_t nsd_uid; /* Effective uid mapped to cred */ u_long nsd_haddr; /* Ip address of client */ struct ucred nsd_cr; /* Cred. uid maps to */ int nsd_authlen; /* Length of auth string (ret) */ char *nsd_authstr; /* Auth string (ret) */ }; struct nfsd_cargs { char *ncd_dirp; /* Mount dir path */ uid_t ncd_authuid; /* Effective uid */ int ncd_authtype; /* Type of authenticator */ int ncd_authlen; /* Length of authenticator string */ char *ncd_authstr; /* Authenticator string */ }; /* * Stats structure */ struct nfsstats { int attrcache_hits; int attrcache_misses; int lookupcache_hits; int lookupcache_misses; int direofcache_hits; int direofcache_misses; int biocache_reads; int read_bios; int read_physios; int biocache_writes; int write_bios; int write_physios; int biocache_readlinks; int readlink_bios; int biocache_readdirs; int readdir_bios; int rpccnt[NFS_NPROCS]; int rpcretries; int srvrpccnt[NFS_NPROCS]; int srvrpc_errs; int srv_errs; int rpcrequests; int rpctimeouts; int rpcunexpected; int rpcinvalid; int srvcache_inproghits; int srvcache_idemdonehits; int srvcache_nonidemdonehits; int srvcache_misses; int srvnqnfs_leases; int srvnqnfs_maxleases; int srvnqnfs_getleases; }; /* * Flags for nfssvc() system call. */ #define NFSSVC_BIOD 0x002 #define NFSSVC_NFSD 0x004 #define NFSSVC_ADDSOCK 0x008 #define NFSSVC_AUTHIN 0x010 #define NFSSVC_GOTAUTH 0x040 #define NFSSVC_AUTHINFAIL 0x080 #define NFSSVC_MNTD 0x100 /* * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. * What should be in this set is open to debate, but I believe that since * I/O system calls on ufs are never interrupted by signals the set should * be minimal. My reasoning is that many current programs that use signals * such as SIGALRM will not expect file I/O system calls to be interrupted * by them and break. */ #ifdef KERNEL #define NFSINT_SIGMASK (sigmask(SIGINT)|sigmask(SIGTERM)|sigmask(SIGKILL)| \ sigmask(SIGHUP)|sigmask(SIGQUIT)) /* * Socket errors ignored for connectionless sockets?? * For now, ignore them all */ #define NFSIGNORE_SOERROR(s, e) \ ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ ((s) & PR_CONNREQUIRED) == 0) /* * Nfs outstanding request list element */ struct nfsreq { TAILQ_ENTRY(nfsreq) r_chain; struct mbuf *r_mreq; struct mbuf *r_mrep; struct mbuf *r_md; caddr_t r_dpos; struct nfsmount *r_nmp; struct vnode *r_vp; u_long r_xid; int r_flags; /* flags on request, see below */ int r_retry; /* max retransmission count */ int r_rexmit; /* current retrans count */ int r_timer; /* tick counter on reply */ int r_procnum; /* NFS procedure number */ int r_rtt; /* RTT for rpc */ struct proc *r_procp; /* Proc that did I/O system call */ }; /* * Queue head for nfsreq's */ TAILQ_HEAD(, nfsreq) nfs_reqq; /* Flag values for r_flags */ #define R_TIMING 0x01 /* timing request (in mntp) */ #define R_SENT 0x02 /* request has been sent */ #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ #define R_INTR 0x08 /* intr mnt, signal pending */ #define R_SOCKERR 0x10 /* Fatal error on socket */ #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ #define R_MUSTRESEND 0x40 /* Must resend request */ #define R_GETONEREP 0x80 /* Probe for one reply only */ struct nfsstats nfsstats; /* * A list of nfssvc_sock structures is maintained with all the sockets * that require service by the nfsd. * The nfsuid structs hang off of the nfssvc_sock structs in both lru * and uid hash lists. */ #define NUIDHASHSIZ 32 #define NUIDHASH(sock, uid) \ (&(sock)->ns_uidhashtbl[(uid) & (sock)->ns_uidhash]) /* * Network address hash list element */ union nethostaddr { u_long had_inetaddr; struct mbuf *had_nam; }; struct nfsuid { TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */ LIST_ENTRY(nfsuid) nu_hash; /* Hash list */ int nu_flag; /* Flags */ uid_t nu_uid; /* Uid mapped by this entry */ union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ struct ucred nu_cr; /* Cred uid mapped to */ }; #define nu_inetaddr nu_haddr.had_inetaddr #define nu_nam nu_haddr.had_nam /* Bits for nu_flag */ #define NU_INETADDR 0x1 struct nfssvc_sock { TAILQ_ENTRY(nfssvc_sock) ns_chain; /* List of all nfssvc_sock's */ TAILQ_HEAD(, nfsuid) ns_uidlruhead; LIST_HEAD(, nfsuid) *ns_uidhashtbl; u_long ns_uidhash; int ns_flag; u_long ns_sref; struct file *ns_fp; struct socket *ns_so; int ns_solock; struct mbuf *ns_nam; int ns_cc; struct mbuf *ns_raw; struct mbuf *ns_rawend; int ns_reclen; struct mbuf *ns_rec; struct mbuf *ns_recend; int ns_numuids; }; /* Bits for "ns_flag" */ #define SLP_VALID 0x01 #define SLP_DOREC 0x02 #define SLP_NEEDQ 0x04 #define SLP_DISCONN 0x08 #define SLP_GETSTREAM 0x10 #define SLP_ALLFLAGS 0xff TAILQ_HEAD(, nfssvc_sock) nfssvc_sockhead; int nfssvc_sockhead_flag; #define SLP_INIT 0x01 #define SLP_WANTINIT 0x02 /* * One of these structures is allocated for each nfsd. */ struct nfsd { TAILQ_ENTRY(nfsd) nd_chain; /* List of all nfsd's */ int nd_flag; /* NFSD_ flags */ struct nfssvc_sock *nd_slp; /* Current socket */ struct mbuf *nd_nam; /* Client addr for datagram req. */ struct mbuf *nd_mrep; /* Req. mbuf list */ struct mbuf *nd_md; caddr_t nd_dpos; /* Position in list */ int nd_procnum; /* RPC procedure number */ u_long nd_retxid; /* RPC xid */ int nd_repstat; /* Reply status value */ struct ucred nd_cr; /* Credentials for req. */ int nd_nqlflag; /* Leasing flag */ u_long nd_duration; /* Lease duration */ int nd_authlen; /* Authenticator len */ u_char nd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ struct proc *nd_procp; /* Proc ptr */ }; /* Bits for "nd_flag" */ #define NFSD_WAITING 0x01 #define NFSD_REQINPROG 0x02 #define NFSD_NEEDAUTH 0x04 #define NFSD_AUTHFAIL 0x08 TAILQ_HEAD(, nfsd) nfsd_head; int nfsd_head_flag; #define NFSD_CHECKSLP 0x01 int nfs_reply __P((struct nfsreq *)); int nfs_getreq __P((struct nfsd *,int)); int nfs_send __P((struct socket *,struct mbuf *,struct mbuf *,struct nfsreq *)); int nfs_rephead __P((int,struct nfsd *,int,int,u_quad_t *,struct mbuf **,struct mbuf **,caddr_t *)); int nfs_sndlock __P((int *,struct nfsreq *)); int nfs_disct __P((struct mbuf **,caddr_t *,int,int,caddr_t *)); int nfs_vinvalbuf __P((struct vnode *,int,struct ucred *,struct proc *,int)); int nfs_readrpc __P((struct vnode *,struct uio *,struct ucred *)); int nfs_writerpc __P((struct vnode *,struct uio *,struct ucred *,int)); int nfs_readdirrpc __P((register struct vnode *,struct uio *,struct ucred *)); int nfs_asyncio __P((struct buf *,struct ucred *)); int nfs_doio __P((struct buf *,struct ucred *,struct proc *)); int nfs_readlinkrpc __P((struct vnode *,struct uio *,struct ucred *)); int nfs_sigintr __P((struct nfsmount *,struct nfsreq *r,struct proc *)); int nfs_readdirlookrpc __P((struct vnode *,register struct uio *,struct ucred *)); int nfsm_disct __P((struct mbuf **,caddr_t *,int,int,caddr_t *)); int nfsrv_fhtovp __P((fhandle_t *,int,struct vnode **,struct ucred *,struct nfssvc_sock *,struct mbuf *,int *)); int nfsrv_access __P((struct vnode *,int,struct ucred *,int,struct proc *)); int netaddr_match __P((int,union nethostaddr *,struct mbuf *)); int nfs_request __P((struct vnode *,struct mbuf *,int,struct proc *,struct ucred *,struct mbuf **,struct mbuf **,caddr_t *)); int nfs_loadattrcache __P((struct vnode **,struct mbuf **,caddr_t *,struct vattr *)); int nfs_namei __P((struct nameidata *,fhandle_t *,int,struct nfssvc_sock *,struct mbuf *,struct mbuf **,caddr_t *,struct proc *)); void nfsm_adj __P((struct mbuf *,int,int)); int nfsm_mbuftouio __P((struct mbuf **,struct uio *,int,caddr_t *)); void nfsrv_initcache __P((void)); int nfs_rcvlock __P((struct nfsreq *)); int nfs_getauth __P((struct nfsmount *,struct nfsreq *,struct ucred *,int *,char **,int *)); int nfs_msg __P((struct proc *,char *,char *)); int nfs_adv __P((struct mbuf **,caddr_t *,int,int)); int nfsrv_getstream __P((struct nfssvc_sock *,int)); void nfs_nhinit __P((void)); void nfs_timer __P((void*)); struct nfsnodehashhead * nfs_hash __P((nfsv2fh_t *)); int nfssvc_iod __P((struct proc *)); int nfssvc_nfsd __P((struct nfsd_srvargs *,caddr_t,struct proc *)); int nfssvc_addsock __P((struct file *,struct mbuf *)); int nfsrv_dorec __P((struct nfssvc_sock *,struct nfsd *)); int nfsrv_getcache __P((struct mbuf *,struct nfsd *,struct mbuf **)); void nfsrv_updatecache __P((struct mbuf *,struct nfsd *,int,struct mbuf *)); int mountnfs __P((struct nfs_args *,struct mount *,struct mbuf *,char *,char *,struct vnode **)); int nfs_connect __P((struct nfsmount *,struct nfsreq *)); int nfs_getattrcache __P((struct vnode *,struct vattr *)); int nfsm_strtmbuf __P((struct mbuf **,char **,char *,long)); int nfs_bioread __P((struct vnode *,struct uio *,int,struct ucred *)); int nfsm_uiotombuf __P((struct uio *,struct mbuf **,int,caddr_t *)); void nfsrv_init __P((int)); #endif /* KERNEL */ #endif