bsd/nfs/nfsmount.h

   1 /*
   2  * Copyright (c) 2000-2011 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  29 /*
  30  * Copyright (c) 1989, 1993
  31  *      The Regents of the University of California.  All rights reserved.
  32  *
  33  * This code is derived from software contributed to Berkeley by
  34  * Rick Macklem at The University of Guelph.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  *      This product includes software developed by the University of
  47  *      California, Berkeley and its contributors.
  48  * 4. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)nfsmount.h  8.3 (Berkeley) 3/30/95
  65  * FreeBSD-Id: nfsmount.h,v 1.13 1997/08/16 19:16:05 wollman Exp $
  66  */
  67
  68
  69 #ifndef _NFS_NFSMOUNT_H_
  70 #define _NFS_NFSMOUNT_H_
  71
  72 #include <sys/appleapiopts.h>
  73
  74 #ifdef __APPLE_API_PRIVATE
  75
  76 /*
  77  * NFS mount file system attributes
  78  */
  79 struct nfs_fsattr {
  80         uint32_t        nfsa_flags;             /* file system flags */
  81         uint32_t        nfsa_lease;             /* lease time in seconds */
  82         uint32_t        nfsa_maxname;           /* maximum filename size */
  83         uint32_t        nfsa_maxlink;           /* maximum # links */
  84         uint32_t        nfsa_bsize;             /* block size */
  85         uint32_t        nfsa_pad;               /* UNUSED */
  86         uint64_t        nfsa_maxfilesize;       /* maximum file size */
  87         uint64_t        nfsa_maxread;           /* maximum read size */
  88         uint64_t        nfsa_maxwrite;          /* maximum write size */
  89         uint64_t        nfsa_files_avail;       /* file slots available */
  90         uint64_t        nfsa_files_free;        /* file slots free */
  91         uint64_t        nfsa_files_total;       /* file slots total */
  92         uint64_t        nfsa_space_avail;       /* disk space available */
  93         uint64_t        nfsa_space_free;        /* disk space free */
  94         uint64_t        nfsa_space_total;       /* disk space total */
  95         uint32_t        nfsa_supp_attr[NFS_ATTR_BITMAP_LEN]; /* attributes supported on this file system */
  96         uint32_t        nfsa_bitmap[NFS_ATTR_BITMAP_LEN]; /* valid attributes */
  97 };
  98 #define NFS_FSFLAG_LINK                 0x00000001
  99 #define NFS_FSFLAG_SYMLINK              0x00000002
 100 #define NFS_FSFLAG_UNIQUE_FH            0x00000004
 101 #define NFS_FSFLAG_ACL                  0x00000008
 102 #define NFS_FSFLAG_SET_TIME             0x00000010
 103 #define NFS_FSFLAG_CASE_INSENSITIVE     0x00000020
 104 #define NFS_FSFLAG_CASE_PRESERVING      0x00000040
 105 #define NFS_FSFLAG_CHOWN_RESTRICTED     0x00000080
 106 #define NFS_FSFLAG_HOMOGENEOUS          0x00000100
 107 #define NFS_FSFLAG_NO_TRUNC             0x00000200
 108 #define NFS_FSFLAG_NAMED_ATTR           0x00000400
 109 #define NFS_FSFLAG_FHTYPE_MASK          0xFF000000
 110 #define NFS_FSFLAG_FHTYPE_SHIFT         24
 111
 112 /*
 113  * NFS file system location structures
 114  */
 115 struct nfs_fs_server {
 116         char *                  ns_name;                /* name of server */
 117         char **                 ns_addresses;           /* array of addresses for server */
 118         uint32_t                ns_addrcount;           /* # of addresses */
 119 };
 120 struct nfs_fs_path {
 121         char **                 np_components;          /* array of component pointers */
 122         uint32_t                np_compcount;           /* # components in path */
 123 };
 124 struct nfs_fs_location {
 125         struct nfs_fs_server ** nl_servers;             /* array of server pointers */
 126         struct nfs_fs_path      nl_path;                /* file system path */
 127         uint32_t                nl_servcount;           /* # of servers */
 128 };
 129
 130 struct nfs_location_index {
 131         uint8_t                 nli_flags;              /* misc flags */
 132         uint8_t                 nli_loc;                /* location index */
 133         uint8_t                 nli_serv;               /* server index */
 134         uint8_t                 nli_addr;               /* address index */
 135 };
 136 #define NLI_VALID       0x01    /* index is valid */
 137
 138 struct nfs_fs_locations {
 139         struct nfs_fs_path      nl_root;                /* current server's root file system path */
 140         uint32_t                nl_numlocs;             /* # of locations */
 141         struct nfs_location_index nl_current;           /* index of current location/server/address */
 142         struct nfs_fs_location **nl_locations;          /* array of fs locations */
 143 };
 144
 145 /*
 146  * RPC record marker parsing state
 147  */
 148 struct nfs_rpc_record_state {
 149         mbuf_t                  nrrs_m;                 /* mbufs for current record */
 150         mbuf_t                  nrrs_mlast;
 151         uint16_t                nrrs_lastfrag;          /* last fragment of record */
 152         uint16_t                nrrs_markerleft;        /* marker bytes remaining */
 153         uint32_t                nrrs_fragleft;          /* fragment bytes remaining */
 154         uint32_t                nrrs_reclen;            /* length of RPC record */
 155 };
 156
 157 /*
 158  * NFS socket structures
 159  */
 160 struct nfs_socket {
 161         lck_mtx_t               nso_lock;               /* nfs socket lock */
 162         TAILQ_ENTRY(nfs_socket) nso_link;               /* list of sockets */
 163         struct sockaddr *       nso_saddr;              /* socket address */
 164         struct sockaddr *       nso_saddr2;             /* additional socket address */
 165         void *                  nso_wake;               /* address to wake up */
 166         time_t                  nso_timestamp;
 167         time_t                  nso_reqtimestamp;       /* last request sent */
 168         socket_t                nso_so;                 /* socket */
 169         uint8_t                 nso_sotype;             /* Type of socket */
 170         uint16_t                nso_flags;              /* NSO_* flags */
 171         struct nfs_location_index nso_location;         /* location index */
 172         uint32_t                nso_protocol;           /* RPC protocol */
 173         uint32_t                nso_version;            /* RPC protocol version */
 174         uint32_t                nso_pingxid;            /* RPC XID of NULL ping request */
 175         int                     nso_error;              /* saved error/status */
 176         struct nfs_rpc_record_state nso_rrs;            /* RPC record parsing state (TCP) */
 177 };
 178 TAILQ_HEAD(nfssocketlist, nfs_socket);
 179 /* nso_flags */
 180 #define NSO_UPCALL              0x0001                  /* socket upcall in progress */
 181 #define NSO_DEAD                0x0002                  /* socket is dead */
 182 #define NSO_CONNECTING          0x0004                  /* socket is being connected */
 183 #define NSO_CONNECTED           0x0008                  /* socket connection complete */
 184 #define NSO_PINGING             0x0010                  /* socket is being tested */
 185 #define NSO_VERIFIED            0x0020                  /* socket appears functional */
 186 #define NSO_DISCONNECTING       0x0040                  /* socket is being disconnected */
 187
 188 /* NFS connect socket search state */
 189 struct nfs_socket_search {
 190         struct nfs_location_index nss_startloc;         /* starting location index */
 191         struct nfs_location_index nss_nextloc;          /* next location index */
 192         struct nfssocketlist    nss_socklist;           /* list of active sockets */
 193         time_t                  nss_timestamp;          /* search start time */
 194         time_t                  nss_last;               /* timestamp of last socket */
 195         struct nfs_socket *     nss_sock;               /* found socket */
 196         uint8_t                 nss_sotype;             /* TCP/UDP */
 197         uint8_t                 nss_sockcnt;            /* # of active sockets */
 198         in_port_t               nss_port;               /* port # to connect to */
 199         uint32_t                nss_protocol;           /* RPC protocol */
 200         uint32_t                nss_version;            /* RPC protocol version */
 201         uint32_t                nss_flags;              /* (see below) */
 202         int                     nss_timeo;              /* how long we are willing to wait */
 203         int                     nss_error;              /* best error we've gotten so far */
 204 };
 205 /* nss_flags */
 206 #define NSS_VERBOSE             0x00000001              /* OK to log info about socket search */
 207 #define NSS_WARNED              0x00000002              /* logged warning about socket search taking a while */
 208
 209 /*
 210  * function table for calling version-specific NFS functions
 211  */
 212 struct nfs_funcs {
 213         int     (*nf_mount)(struct nfsmount *, vfs_context_t, nfsnode_t *);
 214         int     (*nf_update_statfs)(struct nfsmount *, vfs_context_t);
 215         int     (*nf_getquota)(struct nfsmount *, vfs_context_t, uid_t, int, struct dqblk *);
 216         int     (*nf_access_rpc)(nfsnode_t, u_int32_t *, vfs_context_t);
 217         int     (*nf_getattr_rpc)(nfsnode_t, mount_t, u_char *, size_t, int, vfs_context_t, struct nfs_vattr *, u_int64_t *);
 218         int     (*nf_setattr_rpc)(nfsnode_t, struct vnode_attr *, vfs_context_t);
 219         int     (*nf_read_rpc_async)(nfsnode_t, off_t, size_t, thread_t, kauth_cred_t, struct nfsreq_cbinfo *, struct nfsreq **);
 220         int     (*nf_read_rpc_async_finish)(nfsnode_t, struct nfsreq *, uio_t, size_t *, int *);
 221         int     (*nf_readlink_rpc)(nfsnode_t, char *, uint32_t *, vfs_context_t);
 222         int     (*nf_write_rpc_async)(nfsnode_t, uio_t, size_t, thread_t, kauth_cred_t, int, struct nfsreq_cbinfo *, struct nfsreq **);
 223         int     (*nf_write_rpc_async_finish)(nfsnode_t, struct nfsreq *, int *, size_t *, uint64_t *);
 224         int     (*nf_commit_rpc)(nfsnode_t, uint64_t, uint64_t, kauth_cred_t, uint64_t);
 225         int     (*nf_lookup_rpc_async)(nfsnode_t, char *, int, vfs_context_t, struct nfsreq **);
 226         int     (*nf_lookup_rpc_async_finish)(nfsnode_t, char *, int, vfs_context_t, struct nfsreq *, u_int64_t *, fhandle_t *, struct nfs_vattr *);
 227         int     (*nf_remove_rpc)(nfsnode_t, char *, int, thread_t, kauth_cred_t);
 228         int     (*nf_rename_rpc)(nfsnode_t, char *, int, nfsnode_t, char *, int, vfs_context_t);
 229         int     (*nf_setlock_rpc)(nfsnode_t, struct nfs_open_file *, struct nfs_file_lock *, int, int, thread_t, kauth_cred_t);
 230         int     (*nf_unlock_rpc)(nfsnode_t, struct nfs_lock_owner *, int, uint64_t, uint64_t, int, thread_t, kauth_cred_t);
 231         int     (*nf_getlock_rpc)(nfsnode_t, struct nfs_lock_owner *, struct flock *, uint64_t, uint64_t, vfs_context_t);
 232 };
 233
 234 /*
 235  * The long form of the NFSv4 client ID.
 236  */
 237 struct nfs_client_id {
 238         TAILQ_ENTRY(nfs_client_id)      nci_link;       /* list of client IDs */
 239         char                            *nci_id;        /* client id buffer */
 240         int                             nci_idlen;      /* length of client id buffer */
 241 };
 242 TAILQ_HEAD(nfsclientidlist, nfs_client_id);
 243 __private_extern__ struct nfsclientidlist nfsclientids;
 244
 245 /*
 246  * Mount structure.
 247  * One allocated on every NFS mount.
 248  * Holds NFS specific information for mount.
 249  */
 250 struct nfsmount {
 251         lck_mtx_t nm_lock;              /* nfs mount lock */
 252         char *  nm_args;                /* NFS mount args (XDR) */
 253         uint32_t nm_mattrs[NFS_MATTR_BITMAP_LEN]; /* mount attributes in mount args */
 254         uint32_t nm_mflags_mask[NFS_MFLAG_BITMAP_LEN]; /* mount flags mask in mount args */
 255         uint32_t nm_mflags[NFS_MFLAG_BITMAP_LEN]; /* mount flags in mount args */
 256         uint32_t nm_flags[NFS_MFLAG_BITMAP_LEN]; /* current mount flags (soft, intr, etc...) */
 257         int     nm_state;               /* Internal state flags */
 258         int     nm_vers;                /* NFS version */
 259         struct nfs_funcs *nm_funcs;     /* version-specific functions */
 260         kauth_cred_t nm_mcred;          /* credential used for the mount (v4) */
 261         mount_t nm_mountp;              /* VFS structure for this filesystem */
 262         nfsnode_t nm_dnp;               /* root directory nfsnode pointer */
 263         struct nfs_fs_locations nm_locations; /* file system locations */
 264         uint32_t nm_numgrps;            /* Max. size of groupslist */
 265         TAILQ_HEAD(, nfs_gss_clnt_ctx) nm_gsscl; /* GSS user contexts */
 266         int     nm_timeo;               /* Init timer for NFSMNT_DUMBTIMR */
 267         int     nm_retry;               /* Max retries */
 268         uint32_t nm_rsize;              /* Max size of read rpc */
 269         uint32_t nm_wsize;              /* Max size of write rpc */
 270         uint32_t nm_biosize;            /* buffer I/O size */
 271         uint32_t nm_readdirsize;        /* Size of a readdir rpc */
 272         uint32_t nm_readahead;          /* Num. of blocks to readahead */
 273         uint32_t nm_acregmin;           /* reg file min attr cache timeout */
 274         uint32_t nm_acregmax;           /* reg file max attr cache timeout */
 275         uint32_t nm_acdirmin;           /* dir min attr cache timeout */
 276         uint32_t nm_acdirmax;           /* dir max attr cache timeout */
 277         uint32_t nm_auth;               /* security mechanism flavor being used */
 278         uint32_t nm_writers;            /* Number of nodes open for writing */
 279         uint32_t nm_mappers;            /* Number of nodes that have mmapped */
 280         struct nfs_sec nm_sec;          /* acceptable security mechanism flavors */
 281         struct nfs_sec nm_servsec;      /* server's acceptable security mechanism flavors */
 282         fhandle_t *nm_fh;               /* initial file handle */
 283         uint8_t  nm_lockmode;           /* advisory file locking mode */
 284         /* mount info */
 285         uint32_t nm_fsattrstamp;        /* timestamp for fs attrs */
 286         struct nfs_fsattr nm_fsattr;    /* file system attributes */
 287         uint64_t nm_verf;               /* v3/v4 write verifier */
 288         union {
 289             struct {                    /* v2/v3 specific fields */
 290                 TAILQ_ENTRY(nfsmount) ldlink; /* chain of mounts registered for lockd use */
 291                 int udp_sent;           /* UDP request send count */
 292                 int udp_cwnd;           /* UDP request congestion window */
 293                 struct nfs_reqqhead udp_cwndq; /* requests waiting on cwnd */
 294                 struct sockaddr *rqsaddr;/* cached rquota socket address */
 295                 uint32_t rqsaddrstamp;  /* timestamp of rquota socket address */
 296             } v3;
 297             struct {                    /* v4 specific fields */
 298                 struct nfs_client_id *longid; /* client ID, long form */
 299                 uint64_t mounttime;     /* used as client ID verifier */
 300                 uint64_t clientid;      /* client ID, short form */
 301                 thread_call_t renew_timer; /* RENEW timer call */
 302                 nfs_fsid fsid;          /* NFS file system id */
 303                 TAILQ_HEAD(, nfsnode) delegations; /* list of nodes with delegations */
 304                 TAILQ_HEAD(, nfsnode) dreturnq; /* list of nodes with delegations to return */
 305                 TAILQ_ENTRY(nfsmount) cblink; /* chain of mounts registered for callbacks */
 306                 uint32_t cbid;          /* callback channel identifier */
 307                 uint32_t cbrefs;        /* # callbacks using this mount */
 308             } v4;
 309         } nm_un;
 310         /* common state */
 311         TAILQ_HEAD(, nfs_open_owner) nm_open_owners; /* list of open owners */
 312         uint32_t nm_stateinuse;         /* state in use counter */
 313         uint32_t nm_stategenid;         /* state generation counter */
 314         time_t  nm_recover_start;       /* recover start time */
 315         LIST_HEAD(, nfsnode) nm_monlist; /* list of nodes being monitored */
 316         /* async I/O queue */
 317         struct nfs_reqqhead nm_resendq; /* async I/O resend queue */
 318         struct nfs_reqqhead nm_iodq;    /* async I/O request queue */
 319         struct nfsiod *nm_niod;         /* nfsiod processing this mount */
 320         TAILQ_ENTRY(nfsmount) nm_iodlink; /* chain of mounts awaiting nfsiod */
 321         int     nm_asyncwrites;         /* outstanding async I/O writes */
 322         /* socket state */
 323         uint8_t nm_sofamily;            /* (preferred) protocol family of socket */
 324         uint8_t nm_sotype;              /* (preferred) type of socket */
 325         in_port_t       nm_nfsport;     /* NFS protocol port */
 326         in_port_t       nm_mountport;   /* MOUNT protocol port (v2/v3) */
 327         struct nfs_socket_search *nm_nss; /* current socket search structure */
 328         struct nfs_socket *nm_nso;      /* current socket */
 329         struct sockaddr *nm_saddr;      /* Address of server */
 330         u_short nm_sockflags;           /* socket state flags */
 331         time_t  nm_deadto_start;        /* dead timeout start time */
 332         time_t  nm_reconnect_start;     /* reconnect start time */
 333         int     nm_tprintf_initial_delay;       /* delay first "server down" */
 334         int     nm_tprintf_delay;       /* delay between "server down" */
 335         int     nm_deadtimeout;         /* delay between first "server down" and dead set at mount time */
 336         int     nm_curdeadtimeout;      /* current dead timeout. Adjusted by mount state and mobility */
 337         int     nm_srtt[4];             /* Timers for RPCs */
 338         int     nm_sdrtt[4];
 339         int     nm_timeouts;            /* Request timeouts */
 340         int     nm_jbreqs;              /* # R_JBTPRINTFMSG requests */
 341         int     nm_mounterror;          /* status of mount connect */
 342         TAILQ_ENTRY(nfsmount) nm_pokeq; /* mount poke queue chain */
 343         thread_t nm_sockthd;            /* socket thread for this mount */
 344 };
 345
 346 /* macro for checking current mount flags */
 347 #define NMFLAG(NMP, F)          NFS_BITMAP_ISSET((NMP)->nm_flags, NFS_MFLAG_ ## F)
 348 /* macros for checking (original) mount attributes/flags */
 349 #define NM_OMATTR_GIVEN(NMP, F) NFS_BITMAP_ISSET((NMP)->nm_mattrs, NFS_MATTR_ ## F)
 350 #define NM_OMFLAG_GIVEN(NMP, F) NFS_BITMAP_ISSET((NMP)->nm_mflags_mask, NFS_MFLAG_ ## F)
 351 #define NM_OMFLAG(NMP, F)       NFS_BITMAP_ISSET((NMP)->nm_mflags, NFS_MFLAG_ ## F)
 352
 353 /*
 354  * NFS mount state flags (nm_state)
 355  */
 356 #define NFSSTA_MOUNT_THREAD     0x00000040  /* nfs_mount_connect_thread running */
 357 #define NFSSTA_MONITOR_SCAN     0x00000080  /* scan of monitored nodes in progress */
 358 #define NFSSTA_UNMOUNTING       0x00000100  /* an unmount attempt is in progress */
 359 #define NFSSTA_NEEDSECINFO      0x00000200  /* need to fetch security info */
 360 #define NFSSTA_CLIENTID         0x00000400  /* short client ID is valid */
 361 #define NFSSTA_BIGCOOKIES       0x00000800  /* have seen >32bit dir cookies */
 362 #define NFSSTA_JUKEBOXTIMEO     0x00001000  /* experienced a jukebox timeout */
 363 #define NFSSTA_LOCKTIMEO        0x00002000  /* experienced a lock req timeout */
 364 #define NFSSTA_MOUNTED          0x00004000  /* completely mounted */
 365 #define NFSSTA_LOCKSWORK        0x00008000  /* lock ops have worked. */
 366 #define NFSSTA_TIMEO            0x00010000  /* experienced a timeout. */
 367 #define NFSSTA_FORCE            0x00020000  /* doing a forced unmount. */
 368 #define NFSSTA_HASWRITEVERF     0x00040000  /* Has write verifier for V3 */
 369 #define NFSSTA_GOTPATHCONF      0x00080000  /* Got the V3 pathconf info */
 370 #define NFSSTA_GOTFSINFO        0x00100000  /* Got the V3 fsinfo */
 371 #define NFSSTA_SENDING          0x00800000  /* Sending on socket */
 372 #define NFSSTA_SNDLOCK          0x01000000  /* Send socket lock */
 373 #define NFSSTA_WANTSND          0x02000000  /* Want above */
 374 #define NFSSTA_DEAD             0x04000000  /* mount is dead */
 375 #define NFSSTA_RECOVER          0x08000000  /* mount state needs to be recovered */
 376 #define NFSSTA_RECOVER_EXPIRED  0x10000000  /* mount state expired */
 377 #define NFSSTA_REVOKE           0x20000000  /* need to scan for revoked nodes */
 378 #define NFSSTA_SQUISHY          0x40000000  /* we can ask to be forcibly unmounted */
 379
 380 /* flags for nm_sockflags */
 381 #define NMSOCK_READY            0x0001  /* socket is ready for use */
 382 #define NMSOCK_CONNECTING       0x0002  /* socket is being connect()ed */
 383 #define NMSOCK_SETUP            0x0004  /* socket/connection is being set up */
 384 #define NMSOCK_UNMOUNT          0x0008  /* unmounted, no more socket activity */
 385 #define NMSOCK_HASCONNECTED     0x0010  /* socket has connected before */
 386 #define NMSOCK_POKE             0x0020  /* socket needs to be poked */
 387 #define NMSOCK_DISCONNECTING    0x0080  /* socket is being disconnected */
 388
 389 /* aliases for version-specific fields */
 390 #define nm_ldlink       nm_un.v3.ldlink
 391 #define nm_sent         nm_un.v3.udp_sent
 392 #define nm_cwnd         nm_un.v3.udp_cwnd
 393 #define nm_cwndq        nm_un.v3.udp_cwndq
 394 #define nm_rqproto      nm_un.v3.rqproto
 395 #define nm_rqsaddr      nm_un.v3.rqsaddr
 396 #define nm_rqsaddrstamp nm_un.v3.rqsaddrstamp
 397 #define nm_longid       nm_un.v4.longid
 398 #define nm_clientid     nm_un.v4.clientid
 399 #define nm_mounttime    nm_un.v4.mounttime
 400 #define nm_fsid         nm_un.v4.fsid
 401 #define nm_renew_timer  nm_un.v4.renew_timer
 402 #define nm_cbid         nm_un.v4.cbid
 403 #define nm_cblink       nm_un.v4.cblink
 404 #define nm_cbrefs       nm_un.v4.cbrefs
 405 #define nm_delegations  nm_un.v4.delegations
 406 #define nm_dreturnq     nm_un.v4.dreturnq
 407
 408 #if defined(KERNEL)
 409 /*
 410  * Macros to convert from various things to mount structures.
 411  */
 412 #define VFSTONFS(mp)    ((mp) ? ((struct nfsmount *)vfs_fsprivate(mp)) : NULL)
 413 #define VTONMP(vp)      VFSTONFS(vnode_mount(vp))
 414 #define NFSTONMP(np)    VTONMP(NFSTOV(np))
 415 #define NFSTOMP(np)     (vnode_mount(NFSTOV(np)))
 416
 417 #endif /* KERNEL */
 418
 419 #endif /* __APPLE_API_PRIVATE */
 420 #endif /* _NFS_NFSMOUNT_H_ */