The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/nfs/nfs.h

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /*      $NetBSD: nfs.h,v 1.44.2.1 2005/01/11 06:39:46 jmc Exp $ */
    2 /*
    3  * Copyright (c) 1989, 1993, 1995
    4  *      The Regents of the University of California.  All rights reserved.
    5  *
    6  * This code is derived from software contributed to Berkeley by
    7  * Rick Macklem at The University of Guelph.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. Neither the name of the University nor the names of its contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  *
   33  *      @(#)nfs.h       8.4 (Berkeley) 5/1/95
   34  */
   35 
   36 #ifndef _NFS_NFS_H_
   37 #define _NFS_NFS_H_
   38 
   39 /*
   40  * Tunable constants for nfs
   41  */
   42 
   43 #define NFS_MAXIOVEC    34
   44 #define NFS_TICKINTVL   5               /* Desired time for a tick (msec) */
   45 #define NFS_HZ          (hz / nfs_ticks) /* Ticks/sec */
   46 #define NFS_TIMEO       (3 * NFS_HZ)    /* Default timeout = 3 seconds */
   47 #define NFS_MINTIMEO    (1 * NFS_HZ)    /* Min timeout to use */
   48 #define NFS_MAXTIMEO    (60 * NFS_HZ)   /* Max timeout to backoff to */
   49 #define NFS_MINIDEMTIMEO (5 * NFS_HZ)   /* Min timeout for non-idempotent ops*/
   50 #define NFS_MAXREXMIT   100             /* Stop counting after this many */
   51 #define NFS_MAXWINDOW   1024            /* Max number of outstanding requests */
   52 #define NFS_RETRANS     10              /* Num of retrans for soft mounts */
   53 #define NFS_MAXGRPS     16              /* Max. size of groups list */
   54 #ifndef NFS_MINATTRTIMO
   55 #define NFS_MINATTRTIMO 5               /* Attribute cache timeout in sec */
   56 #endif
   57 #ifndef NFS_MAXATTRTIMO
   58 #define NFS_MAXATTRTIMO 60
   59 #endif
   60 #define NFS_TRYLATERDEL 1               /* Initial try later delay (sec) */
   61 #define NFS_TRYLATERDELMAX (1*60)       /* Maximum try later delay (sec) */
   62 #define NFS_TRYLATERDELMUL 2            /* Exponential backoff multiplier */
   63 
   64 /*
   65  * These can be overridden through <machine/param.h>, included via
   66  * <sys/param.h>. This means that <sys/param.h> should always be
   67  * included before this file.
   68  */
   69 #ifndef NFS_WSIZE
   70 #define NFS_WSIZE       8192            /* Def. write data size */
   71 #endif
   72 #ifndef NFS_RSIZE
   73 #define NFS_RSIZE       8192            /* Def. read data size */
   74 #endif
   75 #ifndef NFS_READDIRSIZE
   76 #define NFS_READDIRSIZE 8192            /* Def. readdir size */
   77 #endif
   78 
   79 /*
   80  * NFS client IO daemon threads. May be overridden by config options.
   81  */
   82 #ifndef NFS_MAXASYNCDAEMON
   83 #define NFS_MAXASYNCDAEMON      128     /* Max. number async_daemons runable */
   84 #endif
   85 
   86 /*
   87  * NFS client read-ahead. May be overridden by config options.
   88  * Should be no more than NFS_MAXASYNCDAEMON as each read-ahead operation
   89  * requires one IO thread.
   90  */
   91 #ifndef NFS_MAXRAHEAD
   92 #define NFS_MAXRAHEAD   32              /* Max. read ahead # blocks */
   93 #endif
   94 #define NFS_DEFRAHEAD   2               /* Def. read ahead # blocks */
   95 
   96 #define NFS_MAXUIDHASH  64              /* Max. # of hashed uid entries/mp */
   97 
   98 #ifdef _KERNEL
   99 extern int nfs_niothreads;              /* Number of async_daemons desired */
  100 #ifndef NFS_DEFAULT_NIOTHREADS
  101 #define NFS_DEFAULT_NIOTHREADS 4
  102 #endif
  103 #endif
  104 #define NFS_MAXGATHERDELAY      100     /* Max. write gather delay (msec) */
  105 #ifndef NFS_GATHERDELAY
  106 #define NFS_GATHERDELAY         10      /* Default write gather delay (msec) */
  107 #endif
  108 
  109 /*
  110  * NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for
  111  * NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount
  112  * of data in those buffers, and thus the minimum amount of data
  113  * that you can request. NFS_DIRFRAGSIZ should be no smaller than
  114  * DIRBLKSIZ.
  115  */
  116 
  117 #define NFS_DIRBLKSIZ   8192            /* Must be a multiple of DIRBLKSIZ */
  118 #define NFS_DIRFRAGSIZ   512            /* Same as DIRBLKSIZ, generally */
  119 
  120 /*
  121  * Maximum number of directory entries cached per NFS node, to avoid
  122  * having this grow without bounds on very large directories. The
  123  * minimum size to get reasonable performance for emulated binaries
  124  * is the maximum number of entries that fits in NFS_DIRBLKSIZ.
  125  * For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36.
  126  */
  127 #define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14)
  128 
  129 /*
  130  * Oddballs
  131  */
  132 #define NMOD(a)         ((a) % nfs_asyncdaemons)
  133 #define NFS_CMPFH(n, f, s) \
  134         ((n)->n_fhsize == (s) && !memcmp((caddr_t)(n)->n_fhp,  (caddr_t)(f),  (s)))
  135 #ifdef NFS_V2_ONLY
  136 #define NFS_ISV3(v)     (0)
  137 #else
  138 #define NFS_ISV3(v)     (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3)
  139 #endif
  140 #define NFS_SRVMAXDATA(n) \
  141                 (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \
  142                  NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA)
  143 
  144 /*
  145  * The VA_EXCLUSIVE flag should be added for va_vaflags and set for an
  146  * exclusive create.
  147  */
  148 #if 0
  149 #ifndef VA_EXCLUSIVE
  150 #define VA_EXCLUSIVE    0
  151 #endif
  152 #endif
  153 
  154 /*
  155  * Use the vm_page flag reserved for pager use to indicate pages
  156  * which have been written to the server but not yet committed.
  157  */
  158 #define PG_NEEDCOMMIT PG_PAGER1
  159 
  160 /*
  161  * The IO_METASYNC flag should be implemented for local file systems.
  162  * (Until then, it is nothin at all.)
  163  */
  164 #ifndef IO_METASYNC
  165 #define IO_METASYNC     0
  166 #endif
  167 
  168 /*
  169  * Set the attribute timeout based on how recently the file has been modified.
  170  */
  171 #define NFS_ATTRTIMEO(np) \
  172         ((((np)->n_flag & NMODIFIED) || \
  173          (time.tv_sec - (np)->n_mtime.tv_sec) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \
  174          ((time.tv_sec - (np)->n_mtime.tv_sec) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \
  175           (time.tv_sec - (np)->n_mtime.tv_sec) / 10))
  176 
  177 /*
  178  * Expected allocation sizes for major data structures. If the actual size
  179  * of the structure exceeds these sizes, then malloc() will be allocating
  180  * almost twice the memory required. This is used in nfs_init() to warn
  181  * the sysadmin that the size of a structure should be reduced.
  182  * (These sizes are always a power of 2. If the kernel malloc() changes
  183  *  to one that does not allocate space in powers of 2 size, then this all
  184  *  becomes bunk!)
  185  */
  186 #define NFS_NODEALLOC   256
  187 #define NFS_MNTALLOC    512
  188 #define NFS_SVCALLOC    256
  189 #define NFS_UIDALLOC    128
  190 
  191 /*
  192  * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs
  193  * should ever try and use it.
  194  */
  195 struct nfsd_args {
  196         int     sock;           /* Socket to serve */
  197         caddr_t name;           /* Client addr for connection based sockets */
  198         int     namelen;        /* Length of name */
  199 };
  200 
  201 struct nfsd_srvargs {
  202         struct nfsd     *nsd_nfsd;      /* Pointer to in kernel nfsd struct */
  203         uid_t           nsd_uid;        /* Effective uid mapped to cred */
  204         u_int32_t       nsd_haddr;      /* Ip address of client */
  205         struct uucred   nsd_cr;         /* Cred. uid maps to */
  206         int             nsd_authlen;    /* Length of auth string (ret) */
  207         u_char          *nsd_authstr;   /* Auth string (ret) */
  208         int             nsd_verflen;    /* and the verfier */
  209         u_char          *nsd_verfstr;
  210         struct timeval  nsd_timestamp;  /* timestamp from verifier */
  211         u_int32_t       nsd_ttl;        /* credential ttl (sec) */
  212         NFSKERBKEY_T    nsd_key;        /* Session key */
  213 };
  214 
  215 struct nfsd_cargs {
  216         char            *ncd_dirp;      /* Mount dir path */
  217         uid_t           ncd_authuid;    /* Effective uid */
  218         int             ncd_authtype;   /* Type of authenticator */
  219         u_int           ncd_authlen;    /* Length of authenticator string */
  220         u_char          *ncd_authstr;   /* Authenticator string */
  221         u_int           ncd_verflen;    /* and the verifier */
  222         u_char          *ncd_verfstr;
  223         NFSKERBKEY_T    ncd_key;        /* Session key */
  224 };
  225 
  226 /*
  227  * Stats structure
  228  */
  229 struct nfsstats {
  230         int     attrcache_hits;
  231         int     attrcache_misses;
  232         int     lookupcache_hits;
  233         int     lookupcache_misses;
  234         int     direofcache_hits;
  235         int     direofcache_misses;
  236         int     biocache_reads;
  237         int     read_bios;
  238         int     read_physios;
  239         int     biocache_writes;
  240         int     write_bios;
  241         int     write_physios;
  242         int     biocache_readlinks;
  243         int     readlink_bios;
  244         int     biocache_readdirs;
  245         int     readdir_bios;
  246         int     rpccnt[NFS_NPROCS];
  247         int     rpcretries;
  248         int     srvrpccnt[NFS_NPROCS];
  249         int     srvrpc_errs;
  250         int     srv_errs;
  251         int     rpcrequests;
  252         int     rpctimeouts;
  253         int     rpcunexpected;
  254         int     rpcinvalid;
  255         int     srvcache_inproghits;
  256         int     srvcache_idemdonehits;
  257         int     srvcache_nonidemdonehits;
  258         int     srvcache_misses;
  259         int     srvnqnfs_leases;
  260         int     srvnqnfs_maxleases;
  261         int     srvnqnfs_getleases;
  262         int     srvvop_writes;
  263 };
  264 
  265 /*
  266  * Flags for nfssvc() system call.
  267  */
  268 #define NFSSVC_BIOD     0x002
  269 #define NFSSVC_NFSD     0x004
  270 #define NFSSVC_ADDSOCK  0x008
  271 #define NFSSVC_AUTHIN   0x010
  272 #define NFSSVC_GOTAUTH  0x040
  273 #define NFSSVC_AUTHINFAIL 0x080
  274 #define NFSSVC_MNTD     0x100
  275 
  276 /*
  277  * fs.nfs sysctl(3) identifiers
  278  */
  279 #define NFS_NFSSTATS    1               /* struct: struct nfsstats */
  280 #define NFS_IOTHREADS   2               /* number of io threads */
  281 #define NFS_MAXID       3
  282 
  283 #define NFS_NAMES { \
  284         { 0, 0 }, \
  285         { "nfsstats", CTLTYPE_STRUCT }, \
  286         { "iothreads", CTLTYPE_INT }, \
  287 }
  288 
  289 /*
  290  * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
  291  * What should be in this set is open to debate, but I believe that since
  292  * I/O system calls on ufs are never interrupted by signals the set should
  293  * be minimal. My reasoning is that many current programs that use signals
  294  * such as SIGALRM will not expect file I/O system calls to be interrupted
  295  * by them and break.
  296  */
  297 #ifdef _KERNEL
  298 
  299 struct uio; struct buf; struct vattr; struct nameidata; /* XXX */
  300 
  301 /*
  302  * Socket errors ignored for connectionless sockets??
  303  * For now, ignore them all
  304  */
  305 #define NFSIGNORE_SOERROR(s, e) \
  306                 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \
  307                 ((s) & PR_CONNREQUIRED) == 0)
  308 
  309 /*
  310  * Nfs outstanding request list element
  311  */
  312 struct nfsreq {
  313         TAILQ_ENTRY(nfsreq) r_chain;
  314         struct mbuf     *r_mreq;
  315         struct mbuf     *r_mrep;
  316         struct mbuf     *r_md;
  317         caddr_t         r_dpos;
  318         struct nfsmount *r_nmp;
  319         u_int32_t       r_xid;
  320         int             r_flags;        /* flags on request, see below */
  321         int             r_retry;        /* max retransmission count */
  322         int             r_rexmit;       /* current retrans count */
  323         int             r_timer;        /* tick counter on reply */
  324         u_int32_t       r_procnum;      /* NFS procedure number */
  325         int             r_rtt;          /* RTT for rpc */
  326         struct proc     *r_procp;       /* Proc that did I/O system call */
  327 };
  328 
  329 /*
  330  * Queue head for nfsreq's
  331  */
  332 extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq;
  333 
  334 /* Flag values for r_flags */
  335 #define R_TIMING        0x01            /* timing request (in mntp) */
  336 #define R_SENT          0x02            /* request has been sent */
  337 #define R_SOFTTERM      0x04            /* soft mnt, too many retries */
  338 #define R_INTR          0x08            /* intr mnt, signal pending */
  339 #define R_SOCKERR       0x10            /* Fatal error on socket */
  340 #define R_TPRINTFMSG    0x20            /* Did a tprintf msg. */
  341 #define R_MUSTRESEND    0x40            /* Must resend request */
  342 #define R_GETONEREP     0x80            /* Probe for one reply only */
  343 #define R_REXMITTED     0x100           /* retransmitted after reconnect */
  344 
  345 /*
  346  * A list of nfssvc_sock structures is maintained with all the sockets
  347  * that require service by the nfsd.
  348  * The nfsuid structs hang off of the nfssvc_sock structs in both lru
  349  * and uid hash lists.
  350  */
  351 #ifndef NFS_UIDHASHSIZ
  352 #define NFS_UIDHASHSIZ  29      /* Tune the size of nfssvc_sock with this */
  353 #endif
  354 #define NUIDHASH(sock, uid) \
  355         (&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ])
  356 #ifndef NFS_WDELAYHASHSIZ
  357 #define NFS_WDELAYHASHSIZ 16    /* and with this */
  358 #endif
  359 #define NWDELAYHASH(sock, f) \
  360         (&(sock)->ns_wdelayhashtbl[(*((u_int32_t *)(f))) % NFS_WDELAYHASHSIZ])
  361 #ifndef NFS_MUIDHASHSIZ
  362 #define NFS_MUIDHASHSIZ 63      /* Tune the size of nfsmount with this */
  363 #endif
  364 #define NMUIDHASH(nmp, uid) \
  365         (&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ])
  366 #define NFSNOHASH(fhsum) ((fhsum) & nfsnodehash)
  367 
  368 #ifndef NFS_DIRHASHSIZ
  369 #define NFS_DIRHASHSIZ 64
  370 #endif
  371 #define NFSDIRHASH(np, off) \
  372         (&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)])
  373 
  374 /*
  375  * Macros for storing/retrieving cookies into directory buffers.
  376  */
  377 #define NFS_STASHCOOKIE(dp,off) \
  378         *((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t))) = off
  379 #define NFS_GETCOOKIE(dp) \
  380         (*((off_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t))))
  381 #define NFS_STASHCOOKIE32(dp, val) \
  382         *((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \
  383             sizeof (int))) = val
  384 #define NFS_GETCOOKIE32(dp) \
  385         (*((u_int32_t *)((caddr_t)(dp) + (dp)->d_reclen - sizeof (off_t) - \
  386             sizeof (int))))
  387 
  388 /*
  389  * Flags passed to nfs_bioread().
  390  */
  391 #define NFSBIO_CACHECOOKIES     0x0001  /* Cache dir offset cookies */
  392 
  393 /*
  394  * Network address hash list element
  395  */
  396 union nethostaddr {
  397         u_int32_t had_inetaddr;
  398         struct mbuf *had_nam;
  399 };
  400 
  401 struct nfsuid {
  402         TAILQ_ENTRY(nfsuid) nu_lru;     /* LRU chain */
  403         LIST_ENTRY(nfsuid) nu_hash;     /* Hash list */
  404         int             nu_flag;        /* Flags */
  405         union nethostaddr nu_haddr;     /* Host addr. for dgram sockets */
  406         struct ucred    nu_cr;          /* Cred uid mapped to */
  407         int             nu_expire;      /* Expiry time (sec) */
  408         struct timeval  nu_timestamp;   /* Kerb. timestamp */
  409         u_int32_t       nu_nickname;    /* Nickname on server */
  410         NFSKERBKEY_T    nu_key;         /* and session key */
  411 };
  412 
  413 #define nu_inetaddr     nu_haddr.had_inetaddr
  414 #define nu_nam          nu_haddr.had_nam
  415 /* Bits for nu_flag */
  416 #define NU_INETADDR     0x1
  417 #define NU_NAM          0x2
  418 #ifdef INET6
  419 #define NU_NETFAM(u) \
  420         (((u)->nu_flag & NU_INETADDR) ? \
  421         (((u)->nu_flag & NU_NAM) ? AF_INET6 : AF_INET) : AF_ISO)
  422 #else
  423 #define NU_NETFAM(u)    (((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_ISO)
  424 #endif
  425 
  426 struct nfssvc_sock {
  427         TAILQ_ENTRY(nfssvc_sock) ns_chain;      /* List of all nfssvc_sock's */
  428         TAILQ_ENTRY(nfssvc_sock) ns_pending;    /* List of pending sockets */
  429         TAILQ_HEAD(, nfsuid) ns_uidlruhead;
  430         struct file     *ns_fp;
  431         struct socket   *ns_so;
  432         struct mbuf     *ns_nam;
  433         struct mbuf     *ns_raw;
  434         struct mbuf     *ns_rawend;
  435         struct mbuf     *ns_rec;
  436         struct mbuf     *ns_recend;
  437         struct mbuf     *ns_frag;
  438         int             ns_flag;
  439         int             ns_solock;
  440         int             ns_cc;
  441         int             ns_reclen;
  442         int             ns_numuids;
  443         u_int32_t       ns_sref;
  444         LIST_HEAD(, nfsrv_descript) ns_tq;      /* Write gather lists */
  445         LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ];
  446         LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ];
  447 };
  448 
  449 /* Bits for "ns_flag" */
  450 #define SLP_VALID       0x01
  451 #define SLP_DOREC       0x02
  452 #define SLP_NEEDQ       0x04
  453 #define SLP_DISCONN     0x08
  454 #define SLP_GETSTREAM   0x10
  455 #define SLP_LASTFRAG    0x20
  456 #define SLP_ALLFLAGS    0xff
  457 
  458 extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead;
  459 extern struct nfssvc_sockhead nfssvc_sockpending;
  460 extern int nfssvc_sockhead_flag;
  461 #define SLP_INIT        0x01
  462 #define SLP_WANTINIT    0x02
  463 
  464 /*
  465  * One of these structures is allocated for each nfsd.
  466  */
  467 struct nfsd {
  468         TAILQ_ENTRY(nfsd) nfsd_chain;   /* List of all nfsd's */
  469         SLIST_ENTRY(nfsd) nfsd_idle;    /* List of idle nfsd's */
  470         int             nfsd_flag;      /* NFSD_ flags */
  471         struct nfssvc_sock *nfsd_slp;   /* Current socket */
  472         int             nfsd_authlen;   /* Authenticator len */
  473         u_char          nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */
  474         int             nfsd_verflen;   /* and the Verifier */
  475         u_char          nfsd_verfstr[RPCVERF_MAXSIZ];
  476         struct proc     *nfsd_procp;    /* Proc ptr */
  477         struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */
  478 };
  479 
  480 /* Bits for "nfsd_flag" */
  481 #define NFSD_WAITING    0x01
  482 #define NFSD_REQINPROG  0x02
  483 #define NFSD_NEEDAUTH   0x04
  484 #define NFSD_AUTHFAIL   0x08
  485 
  486 /*
  487  * This structure is used by the server for describing each request.
  488  * Some fields are used only when write request gathering is performed.
  489  */
  490 struct nfsrv_descript {
  491         u_quad_t                nd_time;        /* Write deadline (usec) */
  492         off_t                   nd_off;         /* Start byte offset */
  493         off_t                   nd_eoff;        /* and end byte offset */
  494         LIST_ENTRY(nfsrv_descript) nd_hash;     /* Hash list */
  495         LIST_ENTRY(nfsrv_descript) nd_tq;               /* and timer list */
  496         LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */
  497         struct mbuf             *nd_mrep;       /* Request mbuf list */
  498         struct mbuf             *nd_md;         /* Current dissect mbuf */
  499         struct mbuf             *nd_mreq;       /* Reply mbuf list */
  500         struct mbuf             *nd_nam;        /* and socket addr */
  501         struct mbuf             *nd_nam2;       /* return socket addr */
  502         caddr_t                 nd_dpos;        /* Current dissect pos */
  503         u_int32_t               nd_procnum;     /* RPC # */
  504         int                     nd_stable;      /* storage type */
  505         int                     nd_flag;        /* nd_flag */
  506         int                     nd_len;         /* Length of this write */
  507         int                     nd_repstat;     /* Reply status */
  508         u_int32_t               nd_retxid;      /* Reply xid */
  509         u_int32_t               nd_duration;    /* Lease duration */
  510         struct timeval          nd_starttime;   /* Time RPC initiated */
  511         fhandle_t               nd_fh;          /* File handle */
  512         struct ucred            nd_cr;          /* Credentials */
  513 };
  514 
  515 /* Bits for "nd_flag" */
  516 #define ND_READ         LEASE_READ
  517 #define ND_WRITE        LEASE_WRITE
  518 #define ND_CHECK        0x04
  519 #define ND_LEASE        (ND_READ | ND_WRITE | ND_CHECK)
  520 #define ND_NFSV3        0x08
  521 #define ND_NQNFS        0x10
  522 #define ND_KERBNICK     0x20
  523 #define ND_KERBFULL     0x40
  524 #define ND_KERBAUTH     (ND_KERBNICK | ND_KERBFULL)
  525 
  526 extern struct simplelock nfsd_slock;
  527 extern TAILQ_HEAD(nfsdhead, nfsd) nfsd_head;
  528 extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head;
  529 extern int nfsd_head_flag;
  530 #define NFSD_CHECKSLP   0x01
  531 
  532 extern struct mowner nfs_mowner;
  533 extern struct nfsstats nfsstats;
  534 extern int nfs_numasync;
  535 
  536 /*
  537  * These macros compare nfsrv_descript structures.
  538  */
  539 #define NFSW_CONTIG(o, n) \
  540                 ((o)->nd_eoff >= (n)->nd_off && \
  541                  !memcmp((caddr_t)&(o)->nd_fh, (caddr_t)&(n)->nd_fh, NFSX_V3FH))
  542 
  543 #define NFSW_SAMECRED(o, n) \
  544         (((o)->nd_flag & ND_KERBAUTH) == ((n)->nd_flag & ND_KERBAUTH) && \
  545          !memcmp((caddr_t)&(o)->nd_cr, (caddr_t)&(n)->nd_cr, \
  546                 sizeof (struct ucred)))
  547 
  548 /*
  549  * Defines for WebNFS
  550  */
  551 
  552 #define WEBNFS_ESC_CHAR         '%'
  553 #define WEBNFS_SPECCHAR_START   0x80
  554 
  555 #define WEBNFS_NATIVE_CHAR      0x80
  556 /*
  557  * ..
  558  * Possibly more here in the future.
  559  */
  560 
  561 /*
  562  * Macro for converting escape characters in WebNFS pathnames.
  563  * Should really be in libkern.
  564  */
  565 
  566 #define HEXTOC(c) \
  567         ((c) >= 'a' ? ((c) - ('a' - 10)) : \
  568             ((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '')))
  569 #define HEXSTRTOI(p) \
  570         ((HEXTOC(p[0]) << 4) + HEXTOC(p[1]))
  571 #endif  /* _KERNEL */
  572 
  573 #endif /* _NFS_NFS_H */

Cache object: cd4c37ea5dba663d7c55c31ab3a1dce4


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.