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- /* $NetBSD: nfs.h,v 1.8 1995/03/26 20:37:29 jtc Exp $ */
-
- /*
- * 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
- */
-
- /*
- * 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 */
- #define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */
- #define NFS_MAXATTRTIMO 60
- #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 */
- int 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
-
- #endif /* _KERNEL */
-