Return to nfs.h CVS log

Up to [CSRG BSD Unix] / 43BSDReno / sys / nfs

Annotation of 43BSDReno/sys/nfs/nfs.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1989 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Rick Macklem at The University of Guelph.
        !             7:  *
        !             8:  * Redistribution is only permitted until one year after the first shipment
        !             9:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
        !            10:  * binary forms are permitted provided that: (1) source distributions retain
        !            11:  * this entire copyright notice and comment, and (2) distributions including
        !            12:  * binaries display the following acknowledgement:  This product includes
        !            13:  * software developed by the University of California, Berkeley and its
        !            14:  * contributors'' in the documentation or other materials provided with the
        !            15:  * distribution and in all advertising materials mentioning features or use
        !            16:  * of this software.  Neither the name of the University nor the names of
        !            17:  * its contributors may be used to endorse or promote products derived from
        !            18:  * this software without specific prior written permission.
        !            19:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            20:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            21:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            22:  *
        !            23:  *     @(#)nfs.h       7.9 (Berkeley) 6/28/90
        !            24:  */
        !            25: 
        !            26: /*
        !            27:  * Tunable constants for nfs
        !            28:  */
        !            29: 
        !            30: #define        NFS_MAXIOVEC    34
        !            31: #define NFS_HZ         10              /* Ticks per second for NFS timeouts */
        !            32: #define        NFS_TIMEO       (1*NFS_HZ)      /* Default timeout = 1 second */
        !            33: #define        NFS_MINTIMEO    (NFS_HZ)        /* Min timeout to use */
        !            34: #define        NFS_MAXTIMEO    (60*NFS_HZ)     /* Max timeout to backoff to */
        !            35: #define        NFS_MINIDEMTIMEO (2*NFS_HZ)     /* Min timeout for non-idempotent ops*/
        !            36: #define        NFS_RELIABLETIMEO (5*NFS_HZ)    /* Min timeout on reliable sockets */
        !            37: #define        NFS_MAXREXMIT   100             /* Stop counting after this many */
        !            38: #define        NFS_MAXWINDOW   1024            /* Max number of outstanding requests */
        !            39: #define        NFS_RETRANS     10              /* Num of retrans for soft mounts */
        !            40: #define NFS_FISHY      8               /* Host not responding at this count */
        !            41: #define        NFS_ATTRTIMEO   5               /* Attribute cache timeout in sec */
        !            42: #define        NFS_WSIZE       8192            /* Def. write data size <= 8192 */
        !            43: #define        NFS_RSIZE       8192            /* Def. read data size <= 8192 */
        !            44: #define        NFS_MAXREADDIR  NFS_MAXDATA     /* Max. size of directory read */
        !            45: #define        NFS_MAXASYNCDAEMON 20   /* Max. number async_daemons runable */
        !            46: #define        NMOD(a)         ((a) % nfs_asyncdaemons)
        !            47: 
        !            48: /*
        !            49:  * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
        !            50:  * What should be in this set is open to debate, but I believe that since
        !            51:  * I/O system calls on ufs are never interrupted by signals the set should
        !            52:  * be minimal. My reasoning is that many current programs that use signals
        !            53:  * such as SIGALRM will not expect file I/O system calls to be interrupted
        !            54:  * by them and break.
        !            55:  */
        !            56: #define        NFSINT_SIGMASK  (sigmask(SIGINT)|sigmask(SIGTERM)|sigmask(SIGKILL)| \
        !            57:                         sigmask(SIGHUP)|sigmask(SIGQUIT))
        !            58: 
        !            59: /*
        !            60:  * Socket errors ignored for connectionless sockets??
        !            61:  * For now, ignore them all
        !            62:  */
        !            63: #define        NFSIGNORE_SOERROR(s, e) \
        !            64:                ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \
        !            65:                ((s) & PR_CONNREQUIRED) == 0)
        !            66: 
        !            67: /*
        !            68:  * Nfs outstanding request list element
        !            69:  */
        !            70: struct nfsreq {
        !            71:        struct nfsreq   *r_next;
        !            72:        struct nfsreq   *r_prev;
        !            73:        struct mbuf     *r_mreq;
        !            74:        struct mbuf     *r_mrep;
        !            75:        struct nfsmount *r_nmp;
        !            76:        struct vnode    *r_vp;
        !            77:        u_long          r_xid;
        !            78:        short           r_flags;        /* flags on request, see below */
        !            79:        short           r_retry;        /* max retransmission count */
        !            80:        short           r_rexmit;       /* current retrans count */
        !            81:        short           r_timer;        /* tick counter on reply */
        !            82:        short           r_timerinit;    /* reinit tick counter on reply */
        !            83:        struct proc     *r_procp;       /* Proc that did I/O system call */
        !            84: };
        !            85: 
        !            86: /* Flag values for r_flags */
        !            87: #define R_TIMING       0x01            /* timing request (in mntp) */
        !            88: #define R_SENT         0x02            /* request has been sent */
        !            89: #define        R_SOFTTERM      0x04            /* soft mnt, too many retries */
        !            90: #define        R_INTR          0x08            /* intr mnt, signal pending */
        !            91: #define        R_SOCKERR       0x10            /* Fatal error on socket */
        !            92: #define        R_TPRINTFMSG    0x20            /* Did a tprintf msg. */
        !            93: #define        R_MUSTRESEND    0x40            /* Must resend request */
        !            94: 
        !            95: #ifdef KERNEL
        !            96: /*
        !            97:  * Silly rename structure that hangs off the nfsnode until the name
        !            98:  * can be removed by nfs_inactive()
        !            99:  */
        !           100: struct sillyrename {
        !           101:        int     s_flag;
        !           102:        nfsv2fh_t s_fh;
        !           103:        struct nameidata s_namei;
        !           104: };
        !           105: 
        !           106: /* And its flag values */
        !           107: #define REMOVE         0
        !           108: #define        RMDIR           1
        !           109: #endif /* KERNEL */
        !           110: 
        !           111: /*
        !           112:  * Stats structure
        !           113:  */
        !           114: struct nfsstats {
        !           115:        int     attrcache_hits;
        !           116:        int     attrcache_misses;
        !           117:        int     lookupcache_hits;
        !           118:        int     lookupcache_misses;
        !           119:        int     direofcache_hits;
        !           120:        int     direofcache_misses;
        !           121:        int     biocache_reads;
        !           122:        int     read_bios;
        !           123:        int     read_physios;
        !           124:        int     biocache_writes;
        !           125:        int     write_bios;
        !           126:        int     write_physios;
        !           127:        int     biocache_readlinks;
        !           128:        int     readlink_bios;
        !           129:        int     biocache_readdirs;
        !           130:        int     readdir_bios;
        !           131:        int     rpccnt[NFS_NPROCS];
        !           132:        int     rpcretries;
        !           133:        int     srvrpccnt[NFS_NPROCS];
        !           134:        int     srvrpc_errs;
        !           135:        int     srv_errs;
        !           136:        int     rpcrequests;
        !           137:        int     rpctimeouts;
        !           138:        int     rpcunexpected;
        !           139:        int     rpcinvalid;
        !           140:        int     srvcache_inproghits;
        !           141:        int     srvcache_idemdonehits;
        !           142:        int     srvcache_nonidemdonehits;
        !           143:        int     srvcache_misses;
        !           144: };
        !           145: 
        !           146: #ifdef KERNEL
        !           147: struct nfsstats nfsstats;
        !           148: #endif /* KERNEL */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.