xnu-6153.61.1.tar.gz

[apple/xnu.git] / bsd / nfs / nfs.h

diff --git a/bsd/nfs/nfs.h b/bsd/nfs/nfs.h
index 4ff6d43f72401dfa6ff056dd3abf823a6a47abe2..dcb9647e8e8d1fa9a24dd54fbdea38b35c6b4075 100644 (file)
--- a/bsd/nfs/nfs.h
+++ b/bsd/nfs/nfs.h
@@ -1,8 +1,8 @@
 /*
 /*

- * Copyright (c) 2000-2007 Apple Inc.  All rights reserved.
+ * Copyright (c) 2000-2018 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

- * 
+ *

  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in


@@ -11,10 +11,10 @@
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.

- * 
+ *

  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.

- * 
+ *

  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,


@@ -22,7 +22,7 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.

- * 
+ *

  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */


@@ -76,66 +76,65 @@
  * Tunable constants for nfs
  */
 
  * Tunable constants for nfs
  */
 

-#define NFS_TICKINTVL  5               /* Desired time for a tick (msec) */
-#define NFS_HZ         (hz / nfs_ticks) /* Ticks/sec */
-__private_extern__ int nfs_ticks;
-#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_RETRANS     10              /* Num of retrans for soft mounts */
-#define        NFS_TRYLATERDEL 4               /* Initial try later delay (sec) */
-#define        NFS_MAXGRPS     16              /* Max. size of groups list */
-#define        NFS_MINATTRTIMO 5               /* Attribute cache timeout in sec */
-#define        NFS_MAXATTRTIMO 60
-#define        NFS_MINDIRATTRTIMO 5            /* directory attribute cache timeout in sec */
-#define        NFS_MAXDIRATTRTIMO 60
-#define        NFS_IOSIZE      (1024 * 1024)   /* suggested I/O size */
-#define        NFS_RWSIZE      32768           /* Def. read/write data size <= 32K */
-#define        NFS_WSIZE       NFS_RWSIZE      /* Def. write data size <= 32K */
-#define        NFS_RSIZE       NFS_RWSIZE      /* Def. read data size <= 32K */
-#define        NFS_DGRAM_WSIZE 8192            /* UDP Def. write data size <= 8K */
-#define        NFS_DGRAM_RSIZE 8192            /* UDP Def. read data size <= 8K */
-#define NFS_READDIRSIZE        8192            /* Def. readdir size */
-#define        NFS_DEFRAHEAD   16              /* Def. read ahead # blocks */
-#define        NFS_MAXRAHEAD   128             /* Max. read ahead # blocks */
-#define        NFS_DEFMAXASYNCWRITES   128     /* Def. max # concurrent async write RPCs */
-#define        NFS_DEFASYNCTHREAD      16      /* Def. # nfsiod threads */
-#define        NFS_MAXASYNCTHREAD      64      /* max # nfsiod threads */
-#define        NFS_ASYNCTHREADMAXIDLE  60      /* Seconds before idle nfsiods are reaped */
-#define        NFS_DEFSTATFSRATELIMIT  10      /* Def. max # statfs RPCs per second */
-#define NFS_REQUESTDELAY       10      /* ms interval to check request queue */
-#define NFSRV_DEADSOCKDELAY    5       /* Seconds before dead sockets are reaped */
-#define NFSRV_MAXWGATHERDELAY  100     /* Max. write gather delay (msec) */
+#define NFS_TICKINTVL   5               /* Desired time for a tick (msec) */
+#define NFS_HZ          (hz / nfs_ticks) /* Ticks/sec */
+extern int nfs_ticks;
+#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_RETRANS     10              /* Num of retrans for soft mounts */
+#define NFS_TRYLATERDEL 4               /* Initial try later delay (sec) */
+#define NFS_MAXGRPS     16U             /* Max. size of groups list */
+#define NFS_MINATTRTIMO 5               /* Attribute cache timeout in sec */
+#define NFS_MAXATTRTIMO 60
+#define NFS_MINDIRATTRTIMO 5            /* directory attribute cache timeout in sec */
+#define NFS_MAXDIRATTRTIMO 60
+#define NFS_IOSIZE      (1024 * 1024)   /* suggested I/O size */
+#define NFS_RWSIZE      32768           /* Def. read/write data size <= 32K */
+#define NFS_WSIZE       NFS_RWSIZE      /* Def. write data size <= 32K */
+#define NFS_RSIZE       NFS_RWSIZE      /* Def. read data size <= 32K */
+#define NFS_DGRAM_WSIZE 8192            /* UDP Def. write data size <= 8K */
+#define NFS_DGRAM_RSIZE 8192            /* UDP Def. read data size <= 8K */
+#define NFS_READDIRSIZE 32768           /* Def. readdir size */
+#define NFS_DEFRAHEAD   16              /* Def. read ahead # blocks */
+#define NFS_MAXRAHEAD   128             /* Max. read ahead # blocks */
+#define NFS_DEFMAXASYNCWRITES   128     /* Def. max # concurrent async write RPCs */
+#define NFS_DEFASYNCTHREAD      16      /* Def. # nfsiod threads */
+#define NFS_MAXASYNCTHREAD      64      /* max # nfsiod threads */
+#define NFS_ASYNCTHREADMAXIDLE  60      /* Seconds before idle nfsiods are reaped */
+#define NFS_DEFSTATFSRATELIMIT  10      /* Def. max # statfs RPCs per second */
+#define NFS_REQUESTDELAY        10      /* ms interval to check request queue */
+#define NFSRV_MAXWGATHERDELAY   100     /* Max. write gather delay (msec) */

 #ifndef NFSRV_WGATHERDELAY
 #ifndef NFSRV_WGATHERDELAY

-#define NFSRV_WGATHERDELAY     1       /* Default write gather delay (msec) */
+#define NFSRV_WGATHERDELAY      1       /* Default write gather delay (msec) */

 #endif
 #endif

-#define        NFS_DIRBLKSIZ   4096            /* Must be a multiple of DIRBLKSIZ */
+#define NFS_DIRBLKSIZ   4096            /* size of NFS directory buffers */

 #if defined(KERNEL) && !defined(DIRBLKSIZ)
 #if defined(KERNEL) && !defined(DIRBLKSIZ)

-#define        DIRBLKSIZ       512             /* XXX we used to use ufs's DIRBLKSIZ */
-                                       /* can't be larger than NFS_FABLKSIZE */
+#define DIRBLKSIZ       512             /* XXX we used to use ufs's DIRBLKSIZ */
+                                        /* can't be larger than NFS_FABLKSIZE */

 #endif
 
 /* default values for unresponsive mount timeouts */
 #endif
 
 /* default values for unresponsive mount timeouts */

-#define NFS_TPRINTF_INITIAL_DELAY      12
-#define NFS_TPRINTF_DELAY              30
+#define NFS_TPRINTF_INITIAL_DELAY       5
+#define NFS_TPRINTF_DELAY               30

 
 /*
  * Oddballs
  */
 #define NFS_CMPFH(n, f, s) \
        ((n)->n_fhsize == (s) && !bcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s)))
 
 /*
  * Oddballs
  */
 #define NFS_CMPFH(n, f, s) \
        ((n)->n_fhsize == (s) && !bcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s)))

-#define NFS_SRVMAXDATA(n) \
-               (((n)->nd_vers == NFS_VER3) ? (((n)->nd_nam2) ? \
-                NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA)
+#define NFSRV_NDMAXDATA(n) \
+               (((n)->nd_vers == NFS_VER3) ? (((n)->nd_nam2) ? \
+                NFS_MAXDGRAMDATA : NFSRV_MAXDATA) : NFS_V2MAXDATA)

 
 /*
  * The IO_METASYNC flag should be implemented for local file systems.
  * (Until then, it is nothin at all.)
  */
 #ifndef IO_METASYNC
 
 /*
  * The IO_METASYNC flag should be implemented for local file systems.
  * (Until then, it is nothin at all.)
  */
 #ifndef IO_METASYNC

-#define IO_METASYNC    0
+#define IO_METASYNC     0

 #endif
 
 /*
 #endif
 
 /*


@@ -146,89 +145,150 @@ __private_extern__ int nfs_ticks;
  * (These sizes are always a power of 2. If the kernel malloc() changes
  *  to one that does not allocate space in powers of 2 size, then this all
  *  becomes bunk!).
  * (These sizes are always a power of 2. If the kernel malloc() changes
  *  to one that does not allocate space in powers of 2 size, then this all
  *  becomes bunk!).

- * Note that some of these structures come out of there own nfs zones.
-*/
-#define NFS_NODEALLOC  512
-#define NFS_MNTALLOC   512
-#define NFS_SVCALLOC   256
+ * Note that some of these structures come out of their own nfs zones.
+ */
+#define NFS_NODEALLOC   1024
+#define NFS_MNTALLOC    1024
+#define NFS_SVCALLOC    512
+
+#define NFS_ARGSVERSION_XDR     88      /* NFS mount args are in XDR format */
+
+#define NFS_XDRARGS_VERSION_0   0
+#define NFS_MATTR_BITMAP_LEN    1               /* length of mount attributes bitmap */
+#define NFS_MFLAG_BITMAP_LEN    1               /* length of mount flags bitmap */
+
+/* NFS mount attributes */
+#define NFS_MATTR_FLAGS                 0       /* mount flags (NFS_MATTR_*) */
+#define NFS_MATTR_NFS_VERSION           1       /* NFS protocol version */
+#define NFS_MATTR_NFS_MINOR_VERSION     2       /* NFS protocol minor version */
+#define NFS_MATTR_READ_SIZE             3       /* READ RPC size */
+#define NFS_MATTR_WRITE_SIZE            4       /* WRITE RPC size */
+#define NFS_MATTR_READDIR_SIZE          5       /* READDIR RPC size */
+#define NFS_MATTR_READAHEAD             6       /* block readahead count */
+#define NFS_MATTR_ATTRCACHE_REG_MIN     7       /* minimum attribute cache time */
+#define NFS_MATTR_ATTRCACHE_REG_MAX     8       /* maximum attribute cache time */
+#define NFS_MATTR_ATTRCACHE_DIR_MIN     9       /* minimum attribute cache time for dirs */
+#define NFS_MATTR_ATTRCACHE_DIR_MAX     10      /* maximum attribute cache time for dirs */
+#define NFS_MATTR_LOCK_MODE             11      /* advisory file locking mode (NFS_LOCK_MODE_*) */
+#define NFS_MATTR_SECURITY              12      /* RPC security flavors to use */
+#define NFS_MATTR_MAX_GROUP_LIST        13      /* max # of RPC AUTH_SYS groups */
+#define NFS_MATTR_SOCKET_TYPE           14      /* socket transport type as a netid-like string */
+#define NFS_MATTR_NFS_PORT              15      /* port # to use for NFS protocol */
+#define NFS_MATTR_MOUNT_PORT            16      /* port # to use for MOUNT protocol */
+#define NFS_MATTR_REQUEST_TIMEOUT       17      /* initial RPC request timeout value */
+#define NFS_MATTR_SOFT_RETRY_COUNT      18      /* max RPC retransmissions for soft mounts */
+#define NFS_MATTR_DEAD_TIMEOUT          19      /* how long until unresponsive mount is considered dead */
+#define NFS_MATTR_FH                    20      /* file handle for mount directory */
+#define NFS_MATTR_FS_LOCATIONS          21      /* list of locations for the file system */
+#define NFS_MATTR_MNTFLAGS              22      /* VFS mount flags (MNT_*) */
+#define NFS_MATTR_MNTFROM               23      /* fixed string to use for "f_mntfromname" */
+#define NFS_MATTR_REALM                 24      /* Realm to authenticate with */
+#define NFS_MATTR_PRINCIPAL             25      /* GSS principal to authenticate with */
+#define NFS_MATTR_SVCPRINCIPAL          26      /* GSS principal to authenticate to, the server principal */
+#define NFS_MATTR_NFS_VERSION_RANGE     27      /* Packed version range to try */
+#define NFS_MATTR_KERB_ETYPE            28      /* Enctype to use for kerberos mounts */
+#define NFS_MATTR_LOCAL_NFS_PORT        29      /* Unix domain socket for NFS protocol */
+#define NFS_MATTR_LOCAL_MOUNT_PORT      30      /* Unix domain socket for MOUNT protocol */
+#define NFS_MATTR_SET_MOUNT_OWNER       31      /* Set owner of mount point */
+
+/* NFS mount flags */
+#define NFS_MFLAG_SOFT                  0       /* soft mount (requests fail if unresponsive) */
+#define NFS_MFLAG_INTR                  1       /* allow operations to be interrupted */
+#define NFS_MFLAG_RESVPORT              2       /* use a reserved port */
+#define NFS_MFLAG_NOCONNECT             3       /* don't connect the socket (UDP) */
+#define NFS_MFLAG_DUMBTIMER             4       /* don't estimate RTT dynamically */
+#define NFS_MFLAG_CALLUMNT              5       /* call MOUNTPROC_UMNT on unmount */
+#define NFS_MFLAG_RDIRPLUS              6       /* request additional info when reading directories */
+#define NFS_MFLAG_NONEGNAMECACHE        7       /* don't do negative name caching */
+#define NFS_MFLAG_MUTEJUKEBOX           8       /* don't treat jukebox errors as unresponsive */
+#define NFS_MFLAG_EPHEMERAL             9       /* ephemeral (mirror) mount */
+#define NFS_MFLAG_NOCALLBACK            10      /* don't provide callback RPC service */
+#define NFS_MFLAG_NAMEDATTR             11      /* don't use named attributes */
+#define NFS_MFLAG_NOACL                 12      /* don't support ACLs */
+#define NFS_MFLAG_ACLONLY               13      /* only support ACLs - not mode */
+#define NFS_MFLAG_NFC                   14      /* send NFC strings */
+#define NFS_MFLAG_NOQUOTA               15      /* don't support QUOTA requests */
+#define NFS_MFLAG_MNTUDP                16      /* MOUNT protocol should use UDP */
+#define NFS_MFLAG_MNTQUICK              17      /* use short timeouts while mounting */
+/*                                      18         reserved */
+#define NFS_MFLAG_NOOPAQUE_AUTH         19      /* don't make the mount AUTH_OPAQUE. Used by V3 */
+
+/* Macros for packing and unpacking packed versions */
+#define PVER2MAJOR(M) ((uint32_t)(((M) >> 16) & 0xffff))
+#define PVER2MINOR(m) ((uint32_t)((m) & 0xffff))
+#define VER2PVER(M, m) ((uint32_t)((M) << 16) | ((m) & 0xffff))
+
+/* NFS advisory file locking modes */
+#define NFS_LOCK_MODE_ENABLED           0       /* advisory file locking enabled */
+#define NFS_LOCK_MODE_DISABLED          1       /* do not support advisory file locking */
+#define NFS_LOCK_MODE_LOCAL             2       /* perform advisory file locking locally */
+
+
+/* Supported encryption types for kerberos session keys */
+typedef enum  nfs_supported_kerberos_etypes {
+       NFS_DES3_CBC_SHA1_KD = 16,
+       NFS_AES128_CTS_HMAC_SHA1_96 = 17,
+       NFS_AES256_CTS_HMAC_SHA1_96 = 18
+} nfs_supported_kerberos_etypes;
+
+/* Structure to hold an array of kerberos enctypes to allow on a mount */
+#define NFS_MAX_ETYPES 3
+struct nfs_etype {
+       uint32_t count;
+       uint32_t selected;  /* index in etypes that is being used. Set to count if nothing has been selected */
+       nfs_supported_kerberos_etypes etypes[NFS_MAX_ETYPES];
+};

 
 /*
 
 /*

- * Arguments to mount NFS
+ * Old-style arguments to mount NFS

  */
  */

-#define NFS_ARGSVERSION        5               /* change when nfs_args changes */
+#define NFS_ARGSVERSION 6               /* change when nfs_args changes */

 struct nfs_args {
 struct nfs_args {

-       int             version;        /* args structure version number */
-       struct sockaddr *addr;          /* file server address */
-       int             addrlen;        /* length of address */
-       int             sotype;         /* Socket type */
-       int             proto;          /* and Protocol */
-       u_char          *fh;            /* File handle to be mounted */
-       int             fhsize;         /* Size, in bytes, of fh */
-       int             flags;          /* flags */
-       int             wsize;          /* write size in bytes */
-       int             rsize;          /* read size in bytes */
-       int             readdirsize;    /* readdir size in bytes */
-       int             timeo;          /* initial timeout in .1 secs */
-       int             retrans;        /* times to retry send */
-       int             maxgrouplist;   /* Max. size of group list */
-       int             readahead;      /* # of blocks to readahead */
-       int             leaseterm;      /* obsolete: Term (sec) of lease */
-       int             deadthresh;     /* obsolete: Retrans threshold */
-       char            *hostname;      /* server's name */
+       int             version;        /* args structure version number */
+#ifdef KERNEL
+       user32_addr_t addr;             /* file server address */
+#else
+       struct sockaddr *addr;          /* file server address */
+#endif
+       int             addrlen;        /* length of address */
+       int             sotype;         /* Socket type */
+       int             proto;          /* and Protocol */
+#ifdef KERNEL
+       user32_addr_t fh;               /* File handle to be mounted */
+#else
+       u_char          *fh;            /* File handle to be mounted */
+#endif
+       int             fhsize;         /* Size, in bytes, of fh */
+       int             flags;          /* flags */
+       int             wsize;          /* write size in bytes */
+       int             rsize;          /* read size in bytes */
+       int             readdirsize;    /* readdir size in bytes */
+       int             timeo;          /* initial timeout in .1 secs */
+       int             retrans;        /* times to retry send */
+       int             maxgrouplist;   /* Max. size of group list */
+       int             readahead;      /* # of blocks to readahead */
+       int             leaseterm;      /* obsolete: Term (sec) of lease */
+       int             deadthresh;     /* obsolete: Retrans threshold */
+#ifdef KERNEL
+       user32_addr_t hostname; /* server's name */
+#else
+       char            *hostname;      /* server's name */
+#endif

        /* NFS_ARGSVERSION 3 ends here */
        /* NFS_ARGSVERSION 3 ends here */

-       int             acregmin;       /* reg file min attr cache timeout */
-       int             acregmax;       /* reg file max attr cache timeout */
-       int             acdirmin;       /* dir min attr cache timeout */
-       int             acdirmax;       /* dir max attr cache timeout */
+       int             acregmin;       /* reg file min attr cache timeout */
+       int             acregmax;       /* reg file max attr cache timeout */
+       int             acdirmin;       /* dir min attr cache timeout */
+       int             acdirmax;       /* dir max attr cache timeout */

        /* NFS_ARGSVERSION 4 ends here */
        /* NFS_ARGSVERSION 4 ends here */

-       uint32_t        auth;           /* security mechanism flavor */
-};
-struct nfs_args4 {
-       int             version;        /* args structure version number */
-       struct sockaddr *addr;          /* file server address */
-       int             addrlen;        /* length of address */
-       int             sotype;         /* Socket type */
-       int             proto;          /* and Protocol */
-       u_char          *fh;            /* File handle to be mounted */
-       int             fhsize;         /* Size, in bytes, of fh */
-       int             flags;          /* flags */
-       int             wsize;          /* write size in bytes */
-       int             rsize;          /* read size in bytes */
-       int             readdirsize;    /* readdir size in bytes */
-       int             timeo;          /* initial timeout in .1 secs */
-       int             retrans;        /* times to retry send */
-       int             maxgrouplist;   /* Max. size of group list */
-       int             readahead;      /* # of blocks to readahead */
-       int             leaseterm;      /* obsolete: Term (sec) of lease */
-       int             deadthresh;     /* obsolete: Retrans threshold */
-       char            *hostname;      /* server's name */
-       /* NFS_ARGSVERSION 3 ends here */
-       int             acregmin;       /* reg file min attr cache timeout */
-       int             acregmax;       /* reg file max attr cache timeout */
-       int             acdirmin;       /* dir min attr cache timeout */
-       int             acdirmax;       /* dir max attr cache timeout */
+       uint32_t        auth;           /* security mechanism flavor */
+       /* NFS_ARGSVERSION 5 ends here */
+       uint32_t        deadtimeout;    /* secs until unresponsive mount considered dead */

 };
 
 };
 

-struct nfs_args3 {
-       int             version;        /* args structure version number */
-       struct sockaddr *addr;          /* file server address */
-       int             addrlen;        /* length of address */
-       int             sotype;         /* Socket type */
-       int             proto;          /* and Protocol */
-       u_char          *fh;            /* File handle to be mounted */
-       int             fhsize;         /* Size, in bytes, of fh */
-       int             flags;          /* flags */
-       int             wsize;          /* write size in bytes */
-       int             rsize;          /* read size in bytes */
-       int             readdirsize;    /* readdir size in bytes */
-       int             timeo;          /* initial timeout in .1 secs */
-       int             retrans;        /* times to retry send */
-       int             maxgrouplist;   /* Max. size of group list */
-       int             readahead;      /* # of blocks to readahead */
-       int             leaseterm;      /* obsolete: Term (sec) of lease */
-       int             deadthresh;     /* obsolete: Retrans threshold */
-       char            *hostname;      /* server's name */
-};
+/* incremental size additions in each version of nfs_args */
+#define NFS_ARGSVERSION4_INCSIZE        (4 * sizeof(int))
+#define NFS_ARGSVERSION5_INCSIZE        (sizeof(uint32_t))
+#define NFS_ARGSVERSION6_INCSIZE        (sizeof(uint32_t))

 
 #ifdef KERNEL
 /* LP64 version of nfs_args.  all pointers and longs
 
 #ifdef KERNEL
 /* LP64 version of nfs_args.  all pointers and longs


@@ -236,118 +296,100 @@ struct nfs_args3 {
  * WARNING - keep in sync with nfs_args
  */
 struct user_nfs_args {
  * WARNING - keep in sync with nfs_args
  */
 struct user_nfs_args {

-       int             version;        /* args structure version number */
-       user_addr_t     addr __attribute((aligned(8)));         /* file server address */
-       int             addrlen;        /* length of address */
-       int             sotype;         /* Socket type */
-       int             proto;          /* and Protocol */
-       user_addr_t     fh __attribute((aligned(8)));           /* File handle to be mounted */
-       int             fhsize;         /* Size, in bytes, of fh */
-       int             flags;          /* flags */
-       int             wsize;          /* write size in bytes */
-       int             rsize;          /* read size in bytes */
-       int             readdirsize;    /* readdir size in bytes */
-       int             timeo;          /* initial timeout in .1 secs */
-       int             retrans;        /* times to retry send */
-       int             maxgrouplist;   /* Max. size of group list */
-       int             readahead;      /* # of blocks to readahead */
-       int             leaseterm;      /* obsolete: Term (sec) of lease */
-       int             deadthresh;     /* obsolete: Retrans threshold */
-       user_addr_t     hostname __attribute((aligned(8)));     /* server's name */
+       int             version;        /* args structure version number */
+       user_addr_t     addr __attribute((aligned(8)));         /* file server address */
+       int             addrlen;        /* length of address */
+       int             sotype;         /* Socket type */
+       int             proto;          /* and Protocol */
+       user_addr_t     fh __attribute((aligned(8)));           /* File handle to be mounted */
+       int             fhsize;         /* Size, in bytes, of fh */
+       int             flags;          /* flags */
+       int             wsize;          /* write size in bytes */
+       int             rsize;          /* read size in bytes */
+       int             readdirsize;    /* readdir size in bytes */
+       int             timeo;          /* initial timeout in .1 secs */
+       int             retrans;        /* times to retry send */
+       int             maxgrouplist;   /* Max. size of group list */
+       int             readahead;      /* # of blocks to readahead */
+       int             leaseterm;      /* obsolete: Term (sec) of lease */
+       int             deadthresh;     /* obsolete: Retrans threshold */
+       user_addr_t     hostname __attribute((aligned(8)));     /* server's name */

        /* NFS_ARGSVERSION 3 ends here */
        /* NFS_ARGSVERSION 3 ends here */

-       int             acregmin;       /* reg file min attr cache timeout */
-       int             acregmax;       /* reg file max attr cache timeout */
-       int             acdirmin;       /* dir min attr cache timeout */
-       int             acdirmax;       /* dir max attr cache timeout */
+       int             acregmin;       /* reg file min attr cache timeout */
+       int             acregmax;       /* reg file max attr cache timeout */
+       int             acdirmin;       /* dir min attr cache timeout */
+       int             acdirmax;       /* dir max attr cache timeout */

        /* NFS_ARGSVERSION 4 ends here */
        /* NFS_ARGSVERSION 4 ends here */

-       uint32_t        auth;           /* security mechanism flavor */
-};
-struct user_nfs_args4 {
-       int             version;        /* args structure version number */
-       user_addr_t     addr __attribute((aligned(8)));         /* file server address */
-       int             addrlen;        /* length of address */
-       int             sotype;         /* Socket type */
-       int             proto;          /* and Protocol */
-       user_addr_t     fh __attribute((aligned(8)));           /* File handle to be mounted */
-       int             fhsize;         /* Size, in bytes, of fh */
-       int             flags;          /* flags */
-       int             wsize;          /* write size in bytes */
-       int             rsize;          /* read size in bytes */
-       int             readdirsize;    /* readdir size in bytes */
-       int             timeo;          /* initial timeout in .1 secs */
-       int             retrans;        /* times to retry send */
-       int             maxgrouplist;   /* Max. size of group list */
-       int             readahead;      /* # of blocks to readahead */
-       int             leaseterm;      /* obsolete: Term (sec) of lease */
-       int             deadthresh;     /* obsolete: Retrans threshold */
-       user_addr_t     hostname __attribute((aligned(8)));     /* server's name */
-       /* NFS_ARGSVERSION 3 ends here */
-       int             acregmin;       /* reg file min attr cache timeout */
-       int             acregmax;       /* reg file max attr cache timeout */
-       int             acdirmin;       /* dir min attr cache timeout */
-       int             acdirmax;       /* dir max attr cache timeout */
-};
-struct user_nfs_args3 {
-       int             version;        /* args structure version number */
-       user_addr_t     addr __attribute((aligned(8)));         /* file server address */
-       int             addrlen;        /* length of address */
-       int             sotype;         /* Socket type */
-       int             proto;          /* and Protocol */
-       user_addr_t     fh __attribute((aligned(8)));           /* File handle to be mounted */
-       int             fhsize;         /* Size, in bytes, of fh */
-       int             flags;          /* flags */
-       int             wsize;          /* write size in bytes */
-       int             rsize;          /* read size in bytes */
-       int             readdirsize;    /* readdir size in bytes */
-       int             timeo;          /* initial timeout in .1 secs */
-       int             retrans;        /* times to retry send */
-       int             maxgrouplist;   /* Max. size of group list */
-       int             readahead;      /* # of blocks to readahead */
-       int             leaseterm;      /* obsolete: Term (sec) of lease */
-       int             deadthresh;     /* obsolete: Retrans threshold */
-       user_addr_t     hostname __attribute((aligned(8)));     /* server's name */
+       uint32_t        auth;           /* security mechanism flavor */
+       /* NFS_ARGSVERSION 5 ends here */
+       uint32_t        deadtimeout;    /* secs until unresponsive mount considered dead */

 };
 };

-

 #endif // KERNEL
 
 /*
 #endif // KERNEL
 
 /*

- * NFS mount option flags
+ * Old-style NFS mount option flags

  */
  */

-#define        NFSMNT_SOFT             0x00000001  /* soft mount (hard is default) */
-#define        NFSMNT_WSIZE            0x00000002  /* set write size */
-#define        NFSMNT_RSIZE            0x00000004  /* set read size */
-#define        NFSMNT_TIMEO            0x00000008  /* set initial timeout */
-#define        NFSMNT_RETRANS          0x00000010  /* set number of request retries */
-#define        NFSMNT_MAXGRPS          0x00000020  /* set maximum grouplist size */
-#define        NFSMNT_INT              0x00000040  /* allow interrupts on hard mount */
-#define        NFSMNT_NOCONN           0x00000080  /* Don't Connect the socket */
-#define        NFSMNT_NONEGNAMECACHE   0x00000100  /* Don't do negative name caching */
-#define        NFSMNT_NFSV3            0x00000200  /* Use NFS Version 3 protocol */
-#define        NFSMNT_NFSV4            0x00000400  /* Use NFS Version 4 protocol */
-#define        NFSMNT_DUMBTIMR         0x00000800  /* Don't estimate rtt dynamically */
-// #define     NFSMNT_UNUSED   0x00001000  /* unused */
-#define        NFSMNT_READAHEAD        0x00002000  /* set read ahead */
-// #define     NFSMNT_UNUSED   0x00004000  /* unused */
-#define        NFSMNT_RESVPORT         0x00008000  /* Allocate a reserved port */
-#define        NFSMNT_RDIRPLUS         0x00010000  /* Use Readdirplus for V3 */
-#define        NFSMNT_READDIRSIZE      0x00020000  /* Set readdir size */
-#define        NFSMNT_NOLOCKS          0x00040000  /* don't support file locking */
-#define        NFSMNT_LOCALLOCKS       0x00080000  /* do file locking locally on client */
-#define        NFSMNT_ACREGMIN         0x00100000  /* reg min attr cache timeout */
-#define        NFSMNT_ACREGMAX         0x00200000  /* reg max attr cache timeout */
-#define        NFSMNT_ACDIRMIN         0x00400000  /* dir min attr cache timeout */
-#define        NFSMNT_ACDIRMAX         0x00800000  /* dir max attr cache timeout */
-#define        NFSMNT_SECFLAVOR        0x01000000  /* Use security flavor */
-#define        NFSMNT_SECGIVEN         0x02000000  /* A sec= mount option was given */
+#define NFSMNT_SOFT             0x00000001  /* soft mount (hard is default) */
+#define NFSMNT_WSIZE            0x00000002  /* set write size */
+#define NFSMNT_RSIZE            0x00000004  /* set read size */
+#define NFSMNT_TIMEO            0x00000008  /* set initial timeout */
+#define NFSMNT_RETRANS          0x00000010  /* set number of request retries */
+#define NFSMNT_MAXGRPS          0x00000020  /* set maximum grouplist size */
+#define NFSMNT_INT              0x00000040  /* allow interrupts on hard mount */
+#define NFSMNT_NOCONN           0x00000080  /* Don't Connect the socket */
+#define NFSMNT_NONEGNAMECACHE   0x00000100  /* Don't do negative name caching */
+#define NFSMNT_NFSV3            0x00000200  /* Use NFS Version 3 protocol */
+#define NFSMNT_NFSV4            0x00000400  /* Use NFS Version 4 protocol */
+#define NFSMNT_DUMBTIMR         0x00000800  /* Don't estimate rtt dynamically */
+#define NFSMNT_DEADTIMEOUT      0x00001000  /* unmount after a period of unresponsiveness */
+#define NFSMNT_READAHEAD        0x00002000  /* set read ahead */
+#define NFSMNT_CALLUMNT         0x00004000  /* call MOUNTPROC_UMNT on unmount */
+#define NFSMNT_RESVPORT         0x00008000  /* Allocate a reserved port */
+#define NFSMNT_RDIRPLUS         0x00010000  /* Use Readdirplus for V3 */
+#define NFSMNT_READDIRSIZE      0x00020000  /* Set readdir size */
+#define NFSMNT_NOLOCKS          0x00040000  /* don't support file locking */
+#define NFSMNT_LOCALLOCKS       0x00080000  /* do file locking locally on client */
+#define NFSMNT_ACREGMIN         0x00100000  /* reg min attr cache timeout */
+#define NFSMNT_ACREGMAX         0x00200000  /* reg max attr cache timeout */
+#define NFSMNT_ACDIRMIN         0x00400000  /* dir min attr cache timeout */
+#define NFSMNT_ACDIRMAX         0x00800000  /* dir max attr cache timeout */
+#define NFSMNT_SECFLAVOR        0x01000000  /* Use security flavor */
+#define NFSMNT_SECSYSOK         0x02000000  /* Server can support auth sys */
+#define NFSMNT_MUTEJUKEBOX      0x04000000  /* don't treat jukebox errors as unresponsive */
+#define NFSMNT_NOQUOTA          0x08000000  /* don't support QUOTA requests */
+
+
+/*
+ * fs.nfs sysctl(3) NFS_MOUNTINFO defines
+ */
+#define NFS_MOUNT_INFO_VERSION  0       /* nfsstat mount information version */
+#define NFS_MIATTR_BITMAP_LEN   1       /* length of mount info attributes bitmap */
+#define NFS_MIFLAG_BITMAP_LEN   1       /* length of mount info flags bitmap */
+
+/* NFS mount info attributes */
+#define NFS_MIATTR_FLAGS                0       /* mount info flags bitmap (MIFLAG_*) */
+#define NFS_MIATTR_ORIG_ARGS            1       /* original mount args passed into mount call */
+#define NFS_MIATTR_CUR_ARGS             2       /* current mount args values */
+#define NFS_MIATTR_CUR_LOC_INDEX        3       /* current fs location index */
+
+/* NFS mount info flags */
+#define NFS_MIFLAG_DEAD         0       /* mount is dead */
+#define NFS_MIFLAG_NOTRESP      1       /* server is unresponsive */
+#define NFS_MIFLAG_RECOVERY     2       /* mount in recovery */
+

 
 /*
  * Structures for the nfssvc(2) syscall. Not that anyone but nfsd
  * should ever try and use it.
  */
 struct nfsd_args {
 
 /*
  * Structures for the nfssvc(2) syscall. Not that anyone but nfsd
  * should ever try and use it.
  */
 struct nfsd_args {

-       int     sock;           /* Socket to serve */
-       caddr_t name;           /* Client addr for connection based sockets */
-       int     namelen;        /* Length of name */
+       int     sock;           /* Socket to serve */
+#ifdef KERNEL
+       user32_addr_t   name;           /* Client addr for connection based sockets */
+#else
+       caddr_t name;           /* Client addr for connection based sockets */
+#endif
+       int     namelen;        /* Length of name */

 };
 
 #ifdef KERNEL
 };
 
 #ifdef KERNEL


@@ -356,9 +398,9 @@ struct nfsd_args {
  * WARNING - keep in sync with nfsd_args
  */
 struct user_nfsd_args {
  * WARNING - keep in sync with nfsd_args
  */
 struct user_nfsd_args {

-       int             sock;           /* Socket to serve */
-       user_addr_t     name __attribute((aligned(8)));         /* Client addr for connection based sockets */
-       int             namelen;        /* Length of name */
+       int             sock;           /* Socket to serve */
+       user_addr_t     name __attribute((aligned(8)));         /* Client addr for connection based sockets */
+       int             namelen;        /* Length of name */

 };
 
 #endif // KERNEL
 };
 
 #endif // KERNEL


@@ -368,32 +410,32 @@ struct user_nfsd_args {
  */
 
 /* NFS export handle identifies which NFS export */
  */
 
 /* NFS export handle identifies which NFS export */

-#define        NFS_FH_VERSION  0x4e580000              /* 'NX00' */
+#define NFS_FH_VERSION  0x4e580000              /* 'NX00' */

 struct nfs_exphandle {
 struct nfs_exphandle {

-       uint32_t        nxh_version;            /* data structure version */
-       uint32_t        nxh_fsid;               /* File System Export ID */
-       uint32_t        nxh_expid;              /* Export ID */
-       uint16_t        nxh_flags;              /* export handle flags */
-       uint8_t         nxh_reserved;           /* future use */
-       uint8_t         nxh_fidlen;             /* length of File ID */
+       uint32_t        nxh_version;            /* data structure version */
+       uint32_t        nxh_fsid;               /* File System Export ID */
+       uint32_t        nxh_expid;              /* Export ID */
+       uint16_t        nxh_flags;              /* export handle flags */
+       uint8_t         nxh_reserved;           /* future use */
+       uint8_t         nxh_fidlen;             /* length of File ID */

 };
 
 /* nxh_flags */
 };
 
 /* nxh_flags */

-#define NXHF_INVALIDFH         0x0001          /* file handle is invalid */
+#define NXHF_INVALIDFH          0x0001          /* file handle is invalid */

 
 

-#define        NFS_MAX_FID_SIZE        (NFS_MAX_FH_SIZE - sizeof(struct nfs_exphandle))
-#define        NFSV4_MAX_FID_SIZE      (NFSV4_MAX_FH_SIZE - sizeof(struct nfs_exphandle))
-#define        NFSV3_MAX_FID_SIZE      (NFSV3_MAX_FH_SIZE - sizeof(struct nfs_exphandle))
-#define        NFSV2_MAX_FID_SIZE      (NFSV2_MAX_FH_SIZE - sizeof(struct nfs_exphandle))
+#define NFS_MAX_FID_SIZE        (NFS_MAX_FH_SIZE - sizeof(struct nfs_exphandle))
+#define NFSV4_MAX_FID_SIZE      (NFSV4_MAX_FH_SIZE - sizeof(struct nfs_exphandle))
+#define NFSV3_MAX_FID_SIZE      (NFSV3_MAX_FH_SIZE - sizeof(struct nfs_exphandle))
+#define NFSV2_MAX_FID_SIZE      (NFSV2_MAX_FH_SIZE - sizeof(struct nfs_exphandle))

 
 /* NFS server internal view of fhandle_t */
 /* The first sizeof(fhandle_t) bytes must match what goes into fhandle_t. */
 /* (fhp is used to allow use of an external buffer) */
 struct nfs_filehandle {
 
 /* NFS server internal view of fhandle_t */
 /* The first sizeof(fhandle_t) bytes must match what goes into fhandle_t. */
 /* (fhp is used to allow use of an external buffer) */
 struct nfs_filehandle {

-       uint32_t                nfh_len;        /* total length of file handle */
-       struct nfs_exphandle    nfh_xh;         /* export handle */
-       unsigned char           nfh_fid[NFS_MAX_FID_SIZE]; /* File ID */
-       unsigned char           *nfh_fhp;       /* pointer to file handle */
+       uint32_t                nfh_len;        /* total length of file handle */
+       struct nfs_exphandle    nfh_xh;         /* export handle */
+       unsigned char           nfh_fid[NFS_MAX_FID_SIZE]; /* File ID */
+       unsigned char           *nfh_fhp;       /* pointer to file handle */

 };
 
 /*
 };
 
 /*


@@ -405,100 +447,109 @@ struct nfs_filehandle {
 struct nfs_sec {
        int count;
        uint32_t flavors[NX_MAX_SEC_FLAVORS];
 struct nfs_sec {
        int count;
        uint32_t flavors[NX_MAX_SEC_FLAVORS];

-}; 
+};

 
 struct nfs_export_net_args {
 
 struct nfs_export_net_args {

-       uint32_t                nxna_flags;     /* export flags */
-       struct xucred           nxna_cred;      /* mapped credential for root/all user */
-       struct sockaddr_storage nxna_addr;      /* net address to which exported */
-       struct sockaddr_storage nxna_mask;      /* mask for net address */
-       struct nfs_sec          nxna_sec;       /* security mechanism flavors */
+       uint32_t                nxna_flags;     /* export flags */
+       struct xucred           nxna_cred;      /* mapped credential for root/all user */
+       struct sockaddr_storage nxna_addr;      /* net address to which exported */
+       struct sockaddr_storage nxna_mask;      /* mask for net address */
+       struct nfs_sec          nxna_sec;       /* security mechanism flavors */

 };
 
 struct nfs_export_args {
 };
 
 struct nfs_export_args {

-       uint32_t                nxa_fsid;       /* export FS ID */
-       uint32_t                nxa_expid;      /* export ID */
-       char                    *nxa_fspath;    /* export FS path */
-       char                    *nxa_exppath;   /* export sub-path */
-       uint32_t                nxa_flags;      /* export arg flags */
-       uint32_t                nxa_netcount;   /* #entries in ex_nets array */
-       struct nfs_export_net_args *nxa_nets;   /* array of net args */
+       uint32_t                nxa_fsid;       /* export FS ID */
+       uint32_t                nxa_expid;      /* export ID */
+#ifdef KERNEL
+       user32_addr_t           nxa_fspath;     /* export FS path */
+       user32_addr_t           nxa_exppath;    /* export sub-path */
+#else
+       char                    *nxa_fspath;    /* export FS path */
+       char                    *nxa_exppath;   /* export sub-path */
+#endif
+       uint32_t                nxa_flags;      /* export arg flags */
+       uint32_t                nxa_netcount;   /* #entries in ex_nets array */
+#ifdef KERNEL
+       user32_addr_t           nxa_nets;       /* array of net args */
+#else
+       struct nfs_export_net_args *nxa_nets;   /* array of net args */
+#endif

 };
 
 #ifdef KERNEL
 /* LP64 version of export_args */
 
 struct user_nfs_export_args {
 };
 
 #ifdef KERNEL
 /* LP64 version of export_args */
 
 struct user_nfs_export_args {

-       uint32_t                nxa_fsid;       /* export FS ID */
-       uint32_t                nxa_expid;      /* export ID */
-       user_addr_t             nxa_fspath;     /* export FS path */
-       user_addr_t             nxa_exppath;    /* export sub-path */
-       uint32_t                nxa_flags;      /* export arg flags */
-       uint32_t                nxa_netcount;   /* #entries in ex_nets array */
-       user_addr_t             nxa_nets;       /* array of net args */
+       uint32_t                nxa_fsid;       /* export FS ID */
+       uint32_t                nxa_expid;      /* export ID */
+       user_addr_t             nxa_fspath;     /* export FS path */
+       user_addr_t             nxa_exppath;    /* export sub-path */
+       uint32_t                nxa_flags;      /* export arg flags */
+       uint32_t                nxa_netcount;   /* #entries in ex_nets array */
+       user_addr_t             nxa_nets;       /* array of net args */

 };
 
 #endif /* KERNEL */
 
 /* nfs export arg flags */
 };
 
 #endif /* KERNEL */
 
 /* nfs export arg flags */

-#define NXA_DELETE             0x0001  /* delete the specified export(s) */
-#define NXA_ADD                        0x0002  /* add the specified export(s) */
-#define NXA_REPLACE            0x0003  /* delete and add the specified export(s) */
-#define NXA_DELETE_ALL         0x0004  /* delete all exports */
-#define NXA_OFFLINE            0x0008  /* export is offline */
+#define NXA_DELETE              0x0001  /* delete the specified export(s) */
+#define NXA_ADD                 0x0002  /* add the specified export(s) */
+#define NXA_REPLACE             0x0003  /* delete and add the specified export(s) */
+#define NXA_DELETE_ALL          0x0004  /* delete all exports */
+#define NXA_OFFLINE             0x0008  /* export is offline */
+#define NXA_CHECK               0x0010  /* check if exportable */

 
 /* export option flags */
 
 /* export option flags */

-#define NX_READONLY            0x0001  /* exported read-only */
-#define NX_DEFAULTEXPORT       0x0002  /* exported to the world */
-#define NX_MAPROOT             0x0004  /* map root access to anon credential */
-#define NX_MAPALL              0x0008  /* map all access to anon credential */
-#define NX_32BITCLIENTS                0x0020  /* restrict directory cookies to 32 bits */
-#define NX_OFFLINE             0x0040  /* export is offline */
+#define NX_READONLY             0x0001  /* exported read-only */
+#define NX_DEFAULTEXPORT        0x0002  /* exported to the world */
+#define NX_MAPROOT              0x0004  /* map root access to anon credential */
+#define NX_MAPALL               0x0008  /* map all access to anon credential */
+#define NX_32BITCLIENTS         0x0020  /* restrict directory cookies to 32 bits */
+#define NX_OFFLINE              0x0040  /* export is offline */
+#define NX_MANGLEDNAMES         0x0080  /* export will return mangled names for names > 255 bytes */

 
 /*
  * fs.nfs sysctl(3) export stats record structures
  */
 
 /*
  * fs.nfs sysctl(3) export stats record structures
  */

-#define NFS_EXPORT_STAT_REC_VERSION 1  /* export stat record version */
+#define NFS_EXPORT_STAT_REC_VERSION 1   /* export stat record version */

 #define NFS_USER_STAT_REC_VERSION 1     /* active user list record version */
 
 /* descriptor describing following records */
 #define NFS_USER_STAT_REC_VERSION 1     /* active user list record version */
 
 /* descriptor describing following records */

-struct nfs_export_stat_desc
-{
-       uint32_t rec_vers;              /* version of export stat records */
-       uint32_t rec_count;             /* total record count */
+struct nfs_export_stat_desc {
+       uint32_t rec_vers;              /* version of export stat records */
+       uint32_t rec_count;             /* total record count */

 }__attribute__((__packed__));
 
 /* export stat record containing path and stat counters */
 struct nfs_export_stat_rec {
        char     path[RPCMNT_PATHLEN + 1];
 }__attribute__((__packed__));
 
 /* export stat record containing path and stat counters */
 struct nfs_export_stat_rec {
        char     path[RPCMNT_PATHLEN + 1];

-       uint64_t ops;           /* Count of NFS Requests received for this export */
-       uint64_t bytes_read;    /* Count of bytes read from this export */
-       uint64_t bytes_written; /* Count of bytes written to this export */
+       uint64_t ops;           /* Count of NFS Requests received for this export */
+       uint64_t bytes_read;    /* Count of bytes read from this export */
+       uint64_t bytes_written; /* Count of bytes written to this export */

 }__attribute__((__packed__));
 
 /* Active user list stat buffer descriptor */
 }__attribute__((__packed__));
 
 /* Active user list stat buffer descriptor */

-struct nfs_user_stat_desc
-{
-       uint32_t rec_vers;      /* version of active user stat records */
-       uint32_t rec_count;     /* total record count */
+struct nfs_user_stat_desc {
+       uint32_t rec_vers;      /* version of active user stat records */
+       uint32_t rec_count;     /* total record count */

 }__attribute__((__packed__));
 
 /* Active user list user stat record format */
 struct nfs_user_stat_user_rec {
 }__attribute__((__packed__));
 
 /* Active user list user stat record format */
 struct nfs_user_stat_user_rec {

-       u_char                  rec_type;
-       uid_t                   uid;
-       struct sockaddr_storage sock;
-       uint64_t                ops;
-       uint64_t                bytes_read;
-       uint64_t                bytes_written;
-       uint32_t                tm_start;
-       uint32_t                tm_last;
+       u_char                  rec_type;
+       uid_t                   uid;
+       struct sockaddr_storage sock;
+       uint64_t                ops;
+       uint64_t                bytes_read;
+       uint64_t                bytes_written;
+       uint32_t                tm_start;
+       uint32_t                tm_last;

 }__attribute__((__packed__));
 
 /* Active user list path record format */
 struct nfs_user_stat_path_rec {
 }__attribute__((__packed__));
 
 /* Active user list path record format */
 struct nfs_user_stat_path_rec {

-       u_char  rec_type;
-       char    path[RPCMNT_PATHLEN + 1];
+       u_char  rec_type;
+       char    path[RPCMNT_PATHLEN + 1];

 }__attribute__((__packed__));
 
 /* Defines for rec_type field of
 }__attribute__((__packed__));
 
 /* Defines for rec_type field of


@@ -513,15 +564,15 @@ struct nfs_user_stat_path_rec {
 struct nfs_exportfs;
 
 struct nfs_export_options {
 struct nfs_exportfs;
 
 struct nfs_export_options {

-       uint32_t                nxo_flags;      /* export options */
-       kauth_cred_t            nxo_cred;       /* mapped credential */
-       struct nfs_sec          nxo_sec;        /* security mechanism flavors */
+       uint32_t                nxo_flags;      /* export options */
+       kauth_cred_t            nxo_cred;       /* mapped credential */
+       struct nfs_sec          nxo_sec;        /* security mechanism flavors */

 };
 
 /* Network address lookup element and individual export options */
 struct nfs_netopt {
 };
 
 /* Network address lookup element and individual export options */
 struct nfs_netopt {

-       struct radix_node               no_rnodes[2];   /* radix tree glue */
-       struct nfs_export_options       no_opt;         /* export options */
+       struct radix_node               no_rnodes[2];   /* radix tree glue */
+       struct nfs_export_options       no_opt;         /* export options */

 };
 
 /* statistic counters for each exported directory
 };
 
 /* statistic counters for each exported directory


@@ -531,53 +582,53 @@ struct nfs_netopt {
  * atomic operations
  */
 typedef struct nfsstatcount64 {
  * atomic operations
  */
 typedef struct nfsstatcount64 {

-       uint32_t        hi;
-       uint32_t        lo;
+       uint32_t        hi;
+       uint32_t        lo;

 } nfsstatcount64;
 
 struct nfs_export_stat_counters {
 } nfsstatcount64;
 
 struct nfs_export_stat_counters {

-       struct nfsstatcount64 ops;              /* Count of NFS Requests received for this export  */
-       struct nfsstatcount64 bytes_read;       /* Count of bytes read from this export */
-       struct nfsstatcount64 bytes_written;    /* Count of bytes written to his export */
-}__attribute__((__packed__));
+       struct nfsstatcount64 ops;              /* Count of NFS Requests received for this export  */
+       struct nfsstatcount64 bytes_read;       /* Count of bytes read from this export */
+       struct nfsstatcount64 bytes_written;    /* Count of bytes written to his export */
+};

 
 /* Macro for updating nfs export stat counters */
 #define NFSStatAdd64(PTR, VAL) \
        do { \
 
 /* Macro for updating nfs export stat counters */
 #define NFSStatAdd64(PTR, VAL) \
        do { \

-               uint32_t NFSSA_OldValue = \
-               OSAddAtomic((VAL), (SInt32*)&(PTR)->lo); \
-               if ((NFSSA_OldValue + (VAL)) < NFSSA_OldValue) \
-                       OSAddAtomic(1, (SInt32*)&(PTR)->hi); \
+               uint32_t NFSSA_OldValue = \
+               OSAddAtomic((VAL), &(PTR)->lo); \
+               if ((NFSSA_OldValue + (VAL)) < NFSSA_OldValue) \
+                       OSAddAtomic(1, &(PTR)->hi); \

        } while (0)
 
 /* Some defines for dealing with active user list stats */
        } while (0)
 
 /* Some defines for dealing with active user list stats */

-#define NFSRV_USER_STAT_DEF_MAX_NODES 1024     /* default active user list size limit */
-#define NFSRV_USER_STAT_DEF_IDLE_SEC  7200     /* default idle seconds (node no longer considered active) */
+#define NFSRV_USER_STAT_DEF_MAX_NODES 1024      /* default active user list size limit */
+#define NFSRV_USER_STAT_DEF_IDLE_SEC  7200      /* default idle seconds (node no longer considered active) */

 
 /* active user list globals */
 
 /* active user list globals */

-__private_extern__ uint32_t nfsrv_user_stat_enabled;           /* enable/disable active user list */
-__private_extern__ uint32_t nfsrv_user_stat_node_count;                /* current count of user stat nodes */
-__private_extern__ uint32_t nfsrv_user_stat_max_idle_sec;      /* idle seconds (node no longer considered active) */
-__private_extern__ uint32_t nfsrv_user_stat_max_nodes;         /* active user list size limit */
-__private_extern__ lck_grp_t *nfsrv_active_user_mutex_group;
+extern uint32_t nfsrv_user_stat_enabled;                /* enable/disable active user list */
+extern uint32_t nfsrv_user_stat_node_count;             /* current count of user stat nodes */
+extern uint32_t nfsrv_user_stat_max_idle_sec;   /* idle seconds (node no longer considered active) */
+extern uint32_t nfsrv_user_stat_max_nodes;              /* active user list size limit */
+extern lck_grp_t *nfsrv_active_user_mutex_group;

 
 /* An active user node represented in the kernel */
 struct nfs_user_stat_node {
 
 /* An active user node represented in the kernel */
 struct nfs_user_stat_node {

-       TAILQ_ENTRY(nfs_user_stat_node) lru_link;
-       LIST_ENTRY(nfs_user_stat_node)  hash_link;
-       uid_t                   uid;
-       struct sockaddr_storage sock;
-       uint64_t                ops;
-       uint64_t                bytes_read;
-       uint64_t                bytes_written;
-       uint32_t                tm_start;
-       uint32_t                tm_last;
+       TAILQ_ENTRY(nfs_user_stat_node) lru_link;
+       LIST_ENTRY(nfs_user_stat_node)  hash_link;
+       uid_t                   uid;
+       struct sockaddr_storage sock;
+       uint64_t                ops;
+       uint64_t                bytes_read;
+       uint64_t                bytes_written;
+       uint32_t                tm_start;
+       uint32_t                tm_last;

 };
 
 /* Hash table for active user nodes */
 };
 
 /* Hash table for active user nodes */

-#define NFS_USER_STAT_HASH_SIZE 16     /* MUST be a power of 2 */
+#define NFS_USER_STAT_HASH_SIZE 16      /* MUST be a power of 2 */

 #define NFS_USER_STAT_HASH(userhashtbl, uid) \
 #define NFS_USER_STAT_HASH(userhashtbl, uid) \

-               &((userhashtbl)[(uid) & (NFS_USER_STAT_HASH_SIZE - 1)])
+               &((userhashtbl)[(uid) & (NFS_USER_STAT_HASH_SIZE - 1)])

 
 TAILQ_HEAD(nfs_user_stat_lru_head, nfs_user_stat_node);
 LIST_HEAD(nfs_user_stat_hashtbl_head, nfs_user_stat_node);
 
 TAILQ_HEAD(nfs_user_stat_lru_head, nfs_user_stat_node);
 LIST_HEAD(nfs_user_stat_hashtbl_head, nfs_user_stat_node);


@@ -585,9 +636,9 @@ LIST_HEAD(nfs_user_stat_hashtbl_head, nfs_user_stat_node);
 /* Active user list data structure */
 /* One per exported directory */
 struct nfs_active_user_list {
 /* Active user list data structure */
 /* One per exported directory */
 struct nfs_active_user_list {

-       struct nfs_user_stat_lru_head           user_lru;
-       struct nfs_user_stat_hashtbl_head       user_hashtbl[NFS_USER_STAT_HASH_SIZE];
-       uint32_t                                node_count;
+       struct nfs_user_stat_lru_head           user_lru;
+       struct nfs_user_stat_hashtbl_head       user_hashtbl[NFS_USER_STAT_HASH_SIZE];
+       uint32_t                                node_count;

        lck_mtx_t user_mutex;
 };
 
        lck_mtx_t user_mutex;
 };
 


@@ -595,59 +646,71 @@ struct nfs_active_user_list {
 /* Network export information */
 /* one of these for each exported directory */
 struct nfs_export {
 /* Network export information */
 /* one of these for each exported directory */
 struct nfs_export {

-       LIST_ENTRY(nfs_export)          nx_next;        /* FS export list */
-       LIST_ENTRY(nfs_export)          nx_hash;        /* export hash chain */
-       struct nfs_export               *nx_parent;     /* parent export */
-       uint32_t                        nx_id;          /* export ID */
-       uint32_t                        nx_flags;       /* export flags */
-       struct nfs_exportfs             *nx_fs;         /* exported file system */
-       char                            *nx_path;       /* exported file system sub-path */
-       struct nfs_filehandle           nx_fh;          /* export root file handle */
-       struct nfs_export_options       nx_defopt;      /* default options */
-       uint32_t                        nx_expcnt;      /* # exports in table */
-       struct radix_node_head          *nx_rtable[AF_MAX+1]; /* table of exports (netopts) */
-       struct nfs_export_stat_counters nx_stats;       /* statistic counters for this exported directory */
-       struct nfs_active_user_list     nx_user_list;   /* Active User List for this exported directory */
-       struct timeval                  nx_exptime;     /* time of export for write verifier */
+       LIST_ENTRY(nfs_export)          nx_next;        /* FS export list */
+       LIST_ENTRY(nfs_export)          nx_hash;        /* export hash chain */
+       struct nfs_export               *nx_parent;     /* parent export */
+       uint32_t                        nx_id;          /* export ID */
+       uint32_t                        nx_flags;       /* export flags */
+       struct nfs_exportfs             *nx_fs;         /* exported file system */
+       char                            *nx_path;       /* exported file system sub-path */
+       struct nfs_filehandle           nx_fh;          /* export root file handle */
+       struct nfs_export_options       nx_defopt;      /* default options */
+       uint32_t                        nx_expcnt;      /* # exports in table */
+       struct radix_node_head          *nx_rtable[AF_MAX + 1]; /* table of exports (netopts) */
+       struct nfs_export_stat_counters nx_stats;       /* statistic counters for this exported directory */
+       struct nfs_active_user_list     nx_user_list;   /* Active User List for this exported directory */
+       struct timeval                  nx_exptime;     /* time of export for write verifier */

 };
 
 /* NFS exported file system info */
 /* one of these for each exported file system */
 struct nfs_exportfs {
 };
 
 /* NFS exported file system info */
 /* one of these for each exported file system */
 struct nfs_exportfs {

-       LIST_ENTRY(nfs_exportfs)        nxfs_next;      /* exported file system list */
-       uint32_t                        nxfs_id;        /* exported file system ID */
-       char                            *nxfs_path;     /* exported file system path */
-       LIST_HEAD(,nfs_export)          nxfs_exports;   /* list of exports for this file system */
+       LIST_ENTRY(nfs_exportfs)        nxfs_next;      /* exported file system list */
+       uint32_t                        nxfs_id;        /* exported file system ID */
+       char                            *nxfs_path;     /* exported file system path */
+       LIST_HEAD(, nfs_export)          nxfs_exports;   /* list of exports for this file system */

 };
 
 };
 

-__private_extern__ LIST_HEAD(nfsrv_expfs_list, nfs_exportfs) nfsrv_exports;
-__private_extern__ lck_rw_t nfsrv_export_rwlock;  // lock for export data structures
-#define        NFSRVEXPHASHVAL(FSID, EXPID)    \
+extern LIST_HEAD(nfsrv_expfs_list, nfs_exportfs) nfsrv_exports;
+extern lck_rw_t nfsrv_export_rwlock;  // lock for export data structures
+#define NFSRVEXPHASHSZ  64
+#define NFSRVEXPHASHVAL(FSID, EXPID)    \

        (((FSID) >> 24) ^ ((FSID) >> 16) ^ ((FSID) >> 8) ^ (EXPID))
        (((FSID) >> 24) ^ ((FSID) >> 16) ^ ((FSID) >> 8) ^ (EXPID))

-#define        NFSRVEXPHASH(FSID, EXPID)       \
+#define NFSRVEXPHASH(FSID, EXPID)       \

        (&nfsrv_export_hashtbl[NFSRVEXPHASHVAL((FSID),(EXPID)) & nfsrv_export_hash])
        (&nfsrv_export_hashtbl[NFSRVEXPHASHVAL((FSID),(EXPID)) & nfsrv_export_hash])

-__private_extern__ LIST_HEAD(nfsrv_export_hashhead, nfs_export) *nfsrv_export_hashtbl;
-__private_extern__ u_long nfsrv_export_hash;
+extern LIST_HEAD(nfsrv_export_hashhead, nfs_export) * nfsrv_export_hashtbl;
+extern u_long nfsrv_export_hash;

 
 

+#if CONFIG_FSE

 /*
  * NFS server file mod fsevents
  */
 struct nfsrv_fmod {
 /*
  * NFS server file mod fsevents
  */
 struct nfsrv_fmod {

-       LIST_ENTRY(nfsrv_fmod)  fm_link;
-       vnode_t                 fm_vp;
-       struct vfs_context      fm_context;
-       uint64_t                fm_deadline;
+       LIST_ENTRY(nfsrv_fmod)  fm_link;
+       vnode_t                 fm_vp;
+       struct vfs_context      fm_context;
+       uint64_t                fm_deadline;

 };
 
 };
 

-#define NFSRVFMODHASHSZ        128
-#define NFSRVFMODHASH(vp) (((u_long) vp) & nfsrv_fmod_hash)
-__private_extern__ LIST_HEAD(nfsrv_fmod_hashhead, nfsrv_fmod) *nfsrv_fmod_hashtbl;
-__private_extern__ u_long nfsrv_fmod_hash;
-__private_extern__ lck_mtx_t *nfsrv_fmod_mutex;
-__private_extern__ int nfsrv_fmod_pending, nfsrv_fsevents_enabled;
-__private_extern__ int nfsrv_async, nfsrv_reqcache_size, nfsrv_sock_max_rec_queue_length;
+#define NFSRVFMODHASHSZ 128
+#define NFSRVFMODHASH(vp) (((uintptr_t) vp) & nfsrv_fmod_hash)
+extern LIST_HEAD(nfsrv_fmod_hashhead, nfsrv_fmod) * nfsrv_fmod_hashtbl;
+extern u_long nfsrv_fmod_hash;
+extern lck_mtx_t *nfsrv_fmod_mutex;
+extern int nfsrv_fmod_pending, nfsrv_fsevents_enabled;
+#endif

 
 

-__private_extern__ struct nfsstats nfsstats;
+extern int nfsrv_async, nfsrv_export_hash_size,
+    nfsrv_reqcache_size, nfsrv_sock_max_rec_queue_length;
+extern uint32_t nfsrv_gss_context_ttl;
+extern struct nfsstats nfsstats;
+#define NFS_UC_Q_DEBUG
+#ifdef NFS_UC_Q_DEBUG
+extern int nfsrv_uc_use_proxy;
+extern uint32_t nfsrv_uc_queue_limit;
+extern uint32_t nfsrv_uc_queue_max_seen;
+extern volatile uint32_t nfsrv_uc_queue_count;
+#endif

 
 #endif // KERNEL
 
 
 #endif // KERNEL
 


@@ -659,63 +722,82 @@ __private_extern__ struct nfsstats nfsstats;
  * Stats structure
  */
 struct nfsstats {
  * 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     srvvop_writes;
-       int pageins;
-       int pageouts;
+       uint64_t        attrcache_hits;
+       uint64_t        attrcache_misses;
+       uint64_t        lookupcache_hits;
+       uint64_t        lookupcache_misses;
+       uint64_t        direofcache_hits;
+       uint64_t        direofcache_misses;
+       uint64_t        biocache_reads;
+       uint64_t        read_bios;
+       uint64_t        read_physios;
+       uint64_t        biocache_writes;
+       uint64_t        write_bios;
+       uint64_t        write_physios;
+       uint64_t        biocache_readlinks;
+       uint64_t        readlink_bios;
+       uint64_t        biocache_readdirs;
+       uint64_t        readdir_bios;
+       uint64_t        rpccnt[NFS_NPROCS];
+       uint64_t        rpcretries;
+       uint64_t        srvrpccnt[NFS_NPROCS];
+       uint64_t        srvrpc_errs;
+       uint64_t        srv_errs;
+       uint64_t        rpcrequests;
+       uint64_t        rpctimeouts;
+       uint64_t        rpcunexpected;
+       uint64_t        rpcinvalid;
+       uint64_t        srvcache_inproghits;
+       uint64_t        srvcache_idemdonehits;
+       uint64_t        srvcache_nonidemdonehits;
+       uint64_t        srvcache_misses;
+       uint64_t        srvvop_writes;
+       uint64_t        pageins;
+       uint64_t        pageouts;

 };
 #endif
 
 /*
  * Flags for nfssvc() system call.
  */
 };
 #endif
 
 /*
  * Flags for nfssvc() system call.
  */

-#define        NFSSVC_NFSD     0x004
-#define        NFSSVC_ADDSOCK  0x008
-#define        NFSSVC_EXPORT   0x200
+#define NFSSVC_NFSD     0x004
+#define NFSSVC_ADDSOCK  0x008
+#define NFSSVC_EXPORT   0x200

 
 /*
  * Flags for nfsclnt() system call.
  */
 
 /*
  * Flags for nfsclnt() system call.
  */

-#define NFSCLNT_LOCKDANS       0x200
+#define NFSCLNT_LOCKDANS        0x200
+#define NFSCLNT_LOCKDNOTIFY     0x400
+#define NFSCLNT_TESTIDMAP       0x001
+
+#include <sys/_types/_guid_t.h> /* for guid_t below */
+#define MAXIDNAMELEN            1024
+struct nfs_testmapid {
+       uint32_t                ntm_lookup;     /* lookup name 2 id or id 2 name */
+       uint32_t                ntm_grpflag;    /* Is this a group or user maping */
+       uint32_t                ntm_id;         /* id to map or return */
+       uint32_t                pad;
+       guid_t                  ntm_guid;       /* intermidiate guid used in conversion */
+       char                    ntm_name[MAXIDNAMELEN]; /* name to map or return */
+};
+
+#define NTM_ID2NAME     0
+#define NTM_NAME2ID     1
+#define NTM_NAME2GUID   2
+#define NTM_GUID2NAME   3

 
 /*
  * fs.nfs sysctl(3) identifiers
  */
 
 /*
  * fs.nfs sysctl(3) identifiers
  */

-#define NFS_NFSSTATS   1       /* struct: struct nfsstats */
-#define NFS_EXPORTSTATS 3      /* gets exported directory stats */
-#define NFS_USERSTATS  4       /* gets exported directory active user stats */
-#define NFS_USERCOUNT  5       /* gets current count of active nfs users */
+#define NFS_NFSSTATS    1       /* struct: struct nfsstats */
+#define NFS_EXPORTSTATS 3       /* gets exported directory stats */
+#define NFS_USERSTATS   4       /* gets exported directory active user stats */
+#define NFS_USERCOUNT   5       /* gets current count of active nfs users */
+#define NFS_MOUNTINFO   6       /* gets information about an NFS mount */

 
 #ifndef NFS_WDELAYHASHSIZ
 
 #ifndef NFS_WDELAYHASHSIZ

-#define        NFS_WDELAYHASHSIZ 16    /* and with this */
+#define NFS_WDELAYHASHSIZ 16    /* and with this */

 #endif
 
 #ifdef KERNEL
 #endif
 
 #ifdef KERNEL


@@ -728,13 +810,13 @@ struct nfsstats {
 /* kernel debug trace macros */
 #define FSDBG(A, B, C, D, E) \
        NFS_KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, (A))) | DBG_FUNC_NONE, \
 /* kernel debug trace macros */
 #define FSDBG(A, B, C, D, E) \
        NFS_KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, (A))) | DBG_FUNC_NONE, \

-               (int)(B), (int)(C), (int)(D), (int)(E), 0)
+               (int)(B), (int)(C), (int)(D), (int)(E), 0)

 #define FSDBG_TOP(A, B, C, D, E) \
        NFS_KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, (A))) | DBG_FUNC_START, \
 #define FSDBG_TOP(A, B, C, D, E) \
        NFS_KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, (A))) | DBG_FUNC_START, \

-               (int)(B), (int)(C), (int)(D), (int)(E), 0)
+               (int)(B), (int)(C), (int)(D), (int)(E), 0)

 #define FSDBG_BOT(A, B, C, D, E) \
        NFS_KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, (A))) | DBG_FUNC_END, \
 #define FSDBG_BOT(A, B, C, D, E) \
        NFS_KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, (A))) | DBG_FUNC_END, \

-               (int)(B), (int)(C), (int)(D), (int)(E), 0)
+               (int)(B), (int)(C), (int)(D), (int)(E), 0)

 
 #ifdef MALLOC_DECLARE
 MALLOC_DECLARE(M_NFSREQ);
 
 #ifdef MALLOC_DECLARE
 MALLOC_DECLARE(M_NFSREQ);


@@ -745,13 +827,23 @@ MALLOC_DECLARE(M_NFSD);
 MALLOC_DECLARE(M_NFSBIGFH);
 #endif
 
 MALLOC_DECLARE(M_NFSBIGFH);
 #endif
 

-struct uio; struct vnode_attr; struct nameidata; struct dqblk; /* XXX */
+struct vnode_attr; struct nameidata; struct dqblk; struct sockaddr_in; /* XXX */

 struct nfsbuf;
 struct nfs_vattr;
 struct nfs_fsattr;
 struct nfsnode;
 typedef struct nfsnode * nfsnode_t;
 struct nfsbuf;
 struct nfs_vattr;
 struct nfs_fsattr;
 struct nfsnode;
 typedef struct nfsnode * nfsnode_t;

+struct nfs_open_owner;
+struct nfs_open_file;
+struct nfs_lock_owner;
+struct nfs_file_lock;

 struct nfsreq;
 struct nfsreq;

+struct nfs_rpc_record_state;
+struct nfs_fs_locations;
+struct nfs_location_index;
+struct nfs_socket;
+struct nfs_socket_search;
+struct nfsrv_uc_arg;

 
 /*
  * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
 
 /*
  * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.


@@ -761,137 +853,171 @@ struct nfsreq;
  * such as SIGALRM will not expect file I/O system calls to be interrupted
  * by them and break.
  */
  * such as SIGALRM will not expect file I/O system calls to be interrupted
  * by them and break.
  */

-#define        NFSINT_SIGMASK  (sigmask(SIGINT)|sigmask(SIGTERM)|sigmask(SIGKILL)| \
-                        sigmask(SIGHUP)|sigmask(SIGQUIT))
+#define NFSINT_SIGMASK  (sigmask(SIGINT)|sigmask(SIGTERM)|sigmask(SIGKILL)| \
+                        sigmask(SIGHUP)|sigmask(SIGQUIT))

 
 

-__private_extern__ size_t nfs_mbuf_mhlen, nfs_mbuf_minclsize;
+extern size_t nfs_mbuf_mhlen, nfs_mbuf_minclsize;

 
 /*
  * NFS mbuf chain structure used for managing the building/dissection of RPCs
  */
 struct nfsm_chain {
 
 /*
  * NFS mbuf chain structure used for managing the building/dissection of RPCs
  */
 struct nfsm_chain {

-       mbuf_t          nmc_mhead;      /* mbuf chain head */
-       mbuf_t          nmc_mcur;       /* current mbuf */
-       caddr_t         nmc_ptr;        /* pointer into current mbuf */
-       uint32_t        nmc_left;       /* bytes remaining in current mbuf */
-       uint32_t        nmc_flags;      /* flags for this nfsm_chain */
+       mbuf_t          nmc_mhead;      /* mbuf chain head */
+       mbuf_t          nmc_mcur;       /* current mbuf */
+       caddr_t         nmc_ptr;        /* pointer into current mbuf */
+       uint32_t        nmc_left;       /* bytes remaining in current mbuf */
+       uint32_t        nmc_flags;      /* flags for this nfsm_chain */

 };
 };

-#define NFSM_CHAIN_FLAG_ADD_CLUSTERS   0x1     /* always add mbuf clusters */
+#define NFSM_CHAIN_FLAG_ADD_CLUSTERS    0x1     /* always add mbuf clusters */

 
 /*
  * Each retransmission of an RPCSEC_GSS request
  * has an additional sequence number.
  */
 struct gss_seq {
 
 /*
  * Each retransmission of an RPCSEC_GSS request
  * has an additional sequence number.
  */
 struct gss_seq {

-       SLIST_ENTRY(gss_seq)    gss_seqnext;
-       uint32_t                gss_seqnum;
+       SLIST_ENTRY(gss_seq)    gss_seqnext;
+       uint32_t                gss_seqnum;

 };
 
 /*
  * async NFS request callback info
  */
 struct nfsreq_cbinfo {
 };
 
 /*
  * async NFS request callback info
  */
 struct nfsreq_cbinfo {

-       void                    (*rcb_func)(struct nfsreq *);   /* async request callback function */
-       struct nfsbuf           *rcb_bp;                        /* buffer I/O RPC is for */
-       uint32_t                rcb_args[2];                    /* additional callback args */
+       void                    (*rcb_func)(struct nfsreq *);   /* async request callback function */
+       struct nfsbuf           *rcb_bp;                        /* buffer I/O RPC is for */
+       uint32_t                rcb_args[3];                    /* additional callback args */

 };
 
 };
 

+/*
+ * Arguments to use if a request needs to call SECINFO to handle a WRONGSEC error
+ *
+ * If only node is set, use the parent file handle and this node's name; otherwise,
+ * use any file handle and name provided.
+ */
+struct nfsreq_secinfo_args {
+       nfsnode_t               rsia_np;                /* the node */
+       const char              *rsia_name;             /* alternate name string */
+       u_char                  *rsia_fh;               /* alternate file handle */
+       uint32_t                rsia_namelen;           /* length of string */
+       uint32_t                rsia_fhsize;            /* length of fh */
+};
+#define NFSREQ_SECINFO_SET(SI, NP, FH, FHSIZE, NAME, NAMELEN) \
+       do { \
+               (SI)->rsia_np = (NP); \
+               (SI)->rsia_fh = (FH); \
+               (SI)->rsia_fhsize = (FHSIZE); \
+               (SI)->rsia_name = (NAME); \
+               (SI)->rsia_namelen = (NAMELEN); \
+       } while (0)
+

 /*
  * NFS outstanding request list element
  */
 struct nfsreq {
 /*
  * NFS outstanding request list element
  */
 struct nfsreq {

-       lck_mtx_t               r_mtx;          /* NFS request mutex */
-       TAILQ_ENTRY(nfsreq)     r_chain;        /* request queue chain */
-       TAILQ_ENTRY(nfsreq)     r_achain;       /* mount's async I/O request queue chain */
-       TAILQ_ENTRY(nfsreq)     r_rchain;       /* mount's async I/O resend queue chain */
-       TAILQ_ENTRY(nfsreq)     r_cchain;       /* mount's cwnd queue chain */
-       mbuf_t                  r_mrest;        /* request body mbufs */
-       mbuf_t                  r_mhead;        /* request header mbufs */
-       struct nfsm_chain       r_nmrep;        /* reply mbufs */
-       nfsnode_t               r_np;           /* NFS node */
-       struct nfsmount         *r_nmp;         /* NFS mount point */
-       uint64_t                r_xid;          /* RPC transaction ID */
-       uint32_t                r_procnum;      /* NFS procedure number */
-       u_long                  r_mreqlen;      /* request length */
-       int                     r_flags;        /* flags on request, see below */
-       int                     r_lflags;       /* flags protected by list mutex, see below */
-       int                     r_refs;         /* # outstanding references */
-       uint8_t                 r_delay;        /* delay to use for jukebox error */
-       uint8_t                 r_retry;        /* max retransmission count */
-       uint8_t                 r_rexmit;       /* current retrans count */
-       int                     r_rtt;          /* RTT for rpc */
-       thread_t                r_thread;       /* thread that did I/O system call */
-       kauth_cred_t            r_cred;         /* credential used for request */
-       long                    r_start;        /* request start time */
-       long                    r_lastmsg;      /* time of last tprintf */
-       long                    r_resendtime;   /* time of next jukebox error resend */
-       struct nfs_gss_clnt_ctx *r_gss_ctx;     /* RPCSEC_GSS context */
-       SLIST_HEAD(, gss_seq)   r_gss_seqlist;  /* RPCSEC_GSS sequence numbers */
-       uint32_t                r_gss_argoff;   /* RPCSEC_GSS offset to args */
-       uint32_t                r_gss_arglen;   /* RPCSEC_GSS arg length */
-       int                     r_error;        /* request error */
-       struct nfsreq_cbinfo    r_callback;     /* callback info */
+       lck_mtx_t               r_mtx;          /* NFS request mutex */
+       TAILQ_ENTRY(nfsreq)     r_chain;        /* request queue chain */
+       TAILQ_ENTRY(nfsreq)     r_achain;       /* mount's async I/O request queue chain */
+       TAILQ_ENTRY(nfsreq)     r_rchain;       /* mount's async I/O resend queue chain */
+       TAILQ_ENTRY(nfsreq)     r_cchain;       /* mount's cwnd queue chain */
+       mbuf_t                  r_mrest;        /* request body mbufs */
+       mbuf_t                  r_mhead;        /* request header mbufs */
+       struct nfsm_chain       r_nmrep;        /* reply mbufs */
+       nfsnode_t               r_np;           /* NFS node */
+       struct nfsmount         *r_nmp;         /* NFS mount point */
+       uint64_t                r_xid;          /* RPC transaction ID */
+       uint32_t                r_procnum;      /* NFS procedure number */
+       uint32_t                r_mreqlen;      /* request length */
+       int                     r_flags;        /* flags on request, see below */
+       int                     r_lflags;       /* flags protected by list mutex, see below */
+       int                     r_refs;         /* # outstanding references */
+       uint8_t                 r_delay;        /* delay to use for jukebox error */
+       uint8_t                 r_retry;        /* max retransmission count */
+       uint8_t                 r_rexmit;       /* current retrans count */
+       int                     r_rtt;          /* RTT for rpc */
+       thread_t                r_thread;       /* thread that did I/O system call */
+       kauth_cred_t            r_cred;         /* credential used for request */
+       time_t                  r_start;        /* request start time */
+       time_t                  r_lastmsg;      /* time of last tprintf */
+       time_t                  r_resendtime;   /* time of next jukebox error resend */
+       struct nfs_gss_clnt_ctx *r_gss_ctx;     /* RPCSEC_GSS context */
+       SLIST_HEAD(, gss_seq)   r_gss_seqlist;  /* RPCSEC_GSS sequence numbers */
+       uint32_t                r_gss_argoff;   /* RPCSEC_GSS offset to args */
+       uint32_t                r_gss_arglen;   /* RPCSEC_GSS arg length */
+       uint32_t                r_auth;         /* security flavor request sent with */
+       uint32_t                *r_wrongsec;    /* wrongsec: other flavors to try */
+       int                     r_error;        /* request error */
+       struct nfsreq_cbinfo    r_callback;     /* callback info */
+       struct nfsreq_secinfo_args r_secinfo;   /* secinfo args */

 };
 
 /*
  * Queue head for nfsreq's
  */
 TAILQ_HEAD(nfs_reqqhead, nfsreq);
 };
 
 /*
  * Queue head for nfsreq's
  */
 TAILQ_HEAD(nfs_reqqhead, nfsreq);

-__private_extern__ struct nfs_reqqhead nfs_reqq;
-__private_extern__ lck_grp_t *nfs_request_grp;
+extern struct nfs_reqqhead nfs_reqq;
+extern lck_grp_t *nfs_request_grp;

 
 

-#define R_XID32(x)     ((x) & 0xffffffff)
+#define R_XID32(x)      ((x) & 0xffffffff)

 
 

-#define NFSREQNOLIST ((struct nfsreq *)0xdeadbeef)     /* sentinel value for nfsreq lists */
+#define NFSNOLIST       ((void *)0x0badcafe)    /* sentinel value for nfs lists */
+#define NFSREQNOLIST    NFSNOLIST               /* sentinel value for nfsreq lists */

 
 /* Flag values for r_flags */
 
 /* Flag values for r_flags */

-#define R_TIMING       0x0001          /* timing request (in mntp) */
-#define R_CWND         0x0002          /* request accounted for in congestion window */
-#define R_SOFTTERM     0x0004          /* request terminated (e.g. soft mnt) */
-#define R_RESTART      0x0008          /* RPC should be restarted. */
-#define R_INITTED      0x0010          /* request has been initialized */
-#define R_TPRINTFMSG   0x0020          /* Did a tprintf msg. */
-#define R_MUSTRESEND   0x0040          /* Must resend request */
-#define R_ALLOCATED    0x0080          /* request was allocated */
-#define R_SENT         0x0100          /* request has been sent */
-#define R_WAITSENT     0x0200          /* someone is waiting for request to be sent */
-#define R_RESENDERR    0x0400          /* resend failed */
-#define R_JBTPRINTFMSG 0x0800          /* Did a tprintf msg for jukebox error */
-#define R_ASYNC                0x1000          /* async request */
-#define R_ASYNCWAIT    0x2000          /* async request now being waited on */
-#define R_RESENDQ      0x4000          /* async request currently on resendq */
-
-#define R_SETUP                0x8000          /* a setup RPC - during (re)connection */
-#define R_OPTMASK      0x8000          /* mask of all RPC option flags */
+#define R_TIMING        0x00000001      /* timing request (in mntp) */
+#define R_CWND          0x00000002      /* request accounted for in congestion window */
+#define R_SOFTTERM      0x00000004      /* request terminated (e.g. soft mnt) */
+#define R_RESTART       0x00000008      /* RPC should be restarted. */
+#define R_INITTED       0x00000010      /* request has been initialized */
+#define R_TPRINTFMSG    0x00000020      /* Did a tprintf msg. */
+#define R_MUSTRESEND    0x00000040      /* Must resend request */
+#define R_ALLOCATED     0x00000080      /* request was allocated */
+#define R_SENT          0x00000100      /* request has been sent */
+#define R_WAITSENT      0x00000200      /* someone is waiting for request to be sent */
+#define R_RESENDERR     0x00000400      /* resend failed */
+#define R_JBTPRINTFMSG  0x00000800      /* Did a tprintf msg for jukebox error */
+#define R_ASYNC         0x00001000      /* async request */
+#define R_ASYNCWAIT     0x00002000      /* async request now being waited on */
+#define R_RESENDQ       0x00004000      /* async request currently on resendq */
+#define R_SENDING       0x00008000      /* request currently being sent */
+#define R_SOFT          0x00010000      /* request is soft - don't retry or reconnect */
+#define R_IOD           0x00020000      /* request is being managed by an IOD */
+
+#define R_NOINTR        0x20000000      /* request should not be interupted by a signal */
+#define R_RECOVER       0x40000000      /* a state recovery RPC - during NFSSTA_RECOVER */
+#define R_SETUP         0x80000000      /* a setup RPC - during (re)connection */
+#define R_OPTMASK       0xe0000000      /* mask of all RPC option flags */

 
 /* Flag values for r_lflags */
 
 /* Flag values for r_lflags */

-#define RL_BUSY                0x0001          /* Locked. */
-#define RL_WAITING     0x0002          /* Someone waiting for lock. */
-#define RL_QUEUED      0x0004          /* request is on the queue */
-
-__private_extern__ u_long nfs_xid, nfs_xidwrap;
-__private_extern__ int nfs_iosize, nfs_access_cache_timeout, nfs_allow_async, nfs_statfs_rate_limit;
-__private_extern__ int nfs_lockd_mounts, nfs_lockd_request_sent;
-__private_extern__ int nfs_tprintf_initial_delay, nfs_tprintf_delay;
-__private_extern__ int nfsiod_thread_count, nfsiod_thread_max, nfs_max_async_writes;
-
-#define NFSIOD_MAX     (MIN(nfsiod_thread_max, NFS_MAXASYNCTHREAD))
+#define RL_BUSY         0x0001          /* Locked. */
+#define RL_WAITING      0x0002          /* Someone waiting for lock. */
+#define RL_QUEUED       0x0004          /* request is on the queue */
+
+extern u_int32_t nfs_xid, nfs_xidwrap;
+extern int nfs_iosize, nfs_allow_async, nfs_statfs_rate_limit;
+extern int nfs_access_cache_timeout, nfs_access_delete, nfs_access_dotzfs, nfs_access_for_getattr;
+extern int nfs_lockd_mounts, nfs_lockd_request_sent;
+extern int nfs_tprintf_initial_delay, nfs_tprintf_delay;
+extern int nfsiod_thread_count, nfsiod_thread_max, nfs_max_async_writes;
+extern int nfs_idmap_ctrl, nfs_callback_port;
+extern int nfs_is_mobile, nfs_readlink_nocache, nfs_root_steals_ctx;
+extern uint32_t nfs_squishy_flags;
+extern uint32_t nfs_debug_ctl;
+
+/* bits for nfs_idmap_ctrl: */
+#define NFS_IDMAP_CTRL_USE_IDMAP_SERVICE                0x00000001 /* use the ID mapping service */
+#define NFS_IDMAP_CTRL_FALLBACK_NO_COMMON_IDS           0x00000002 /* fallback should NOT handle common IDs like "root" and "nobody" */
+#define NFS_IDMAP_CTRL_LOG_FAILED_MAPPINGS              0x00000020 /* log failed ID mapping attempts */
+#define NFS_IDMAP_CTRL_LOG_SUCCESSFUL_MAPPINGS          0x00000040 /* log successful ID mapping attempts */
+
+#define NFSIOD_MAX      (MIN(nfsiod_thread_max, NFS_MAXASYNCTHREAD))

 
 struct nfs_dulookup {
 
 struct nfs_dulookup {

-       int du_flags;                   /* state of ._ lookup */
-#define NFS_DULOOKUP_DOIT      0x1
-#define NFS_DULOOKUP_INPROG    0x2
-       struct componentname du_cn;     /* ._ name being looked up */
-       struct nfsreq du_req;           /* NFS request for lookup */
-       char du_smallname[48];          /* buffer for small names */
-};
-
-/*
- * Network address hash list element
- */
-union nethostaddr {
-       u_long had_inetaddr;
-       mbuf_t had_nam;
+       int du_flags;                   /* state of ._ lookup */
+#define NFS_DULOOKUP_DOIT       0x1
+#define NFS_DULOOKUP_INPROG     0x2
+       struct componentname du_cn;     /* ._ name being looked up */
+       struct nfsreq du_req;           /* NFS request for lookup */
+       char du_smallname[48];          /* buffer for small names */

 };
 
 /*
 };
 
 /*


@@ -899,47 +1025,48 @@ union nethostaddr {
  * server is servicing requests on.
  */
 struct nfsrv_sock {
  * server is servicing requests on.
  */
 struct nfsrv_sock {

-       TAILQ_ENTRY(nfsrv_sock) ns_chain;       /* List of all nfsrv_sock's */
-       TAILQ_ENTRY(nfsrv_sock) ns_svcq;        /* List of sockets needing servicing */
-       TAILQ_ENTRY(nfsrv_sock) ns_wgq;         /* List of sockets with a pending write gather */
-       lck_rw_t        ns_rwlock;              /* lock for most fields */
-       socket_t        ns_so;
-       mbuf_t          ns_nam;
-       mbuf_t          ns_raw;
-       mbuf_t          ns_rawend;
-       mbuf_t          ns_rec;
-       mbuf_t          ns_recend;
-       mbuf_t          ns_frag;
-       int             ns_flag;
-       int             ns_sotype;
-       int             ns_cc;
-       int             ns_reclen;
-       int             ns_reccnt;
-       u_long          ns_sref;
-       time_t          ns_timestamp;           /* socket timestamp */
-       lck_mtx_t       ns_wgmutex;             /* mutex for write gather fields */
-       u_quad_t        ns_wgtime;              /* next Write deadline (usec) */
-       LIST_HEAD(, nfsrv_descript) ns_tq;      /* Write gather lists */
+       TAILQ_ENTRY(nfsrv_sock) ns_chain;       /* List of all nfsrv_sock's */
+       TAILQ_ENTRY(nfsrv_sock) ns_svcq;        /* List of sockets needing servicing */
+       TAILQ_ENTRY(nfsrv_sock) ns_wgq;         /* List of sockets with a pending write gather */
+       struct nfsrv_uc_arg *ns_ua;             /* Opaque pointer to upcall */
+       lck_rw_t        ns_rwlock;              /* lock for most fields */
+       socket_t        ns_so;
+       mbuf_t          ns_nam;
+       mbuf_t          ns_raw;
+       mbuf_t          ns_rawend;
+       mbuf_t          ns_rec;
+       mbuf_t          ns_recend;
+       mbuf_t          ns_frag;
+       int             ns_flag;
+       int             ns_sotype;
+       int             ns_cc;
+       int             ns_reclen;
+       int             ns_reccnt;
+       u_int32_t               ns_sref;
+       time_t          ns_timestamp;           /* socket timestamp */
+       lck_mtx_t       ns_wgmutex;             /* mutex for write gather fields */
+       u_quad_t        ns_wgtime;              /* next Write deadline (usec) */
+       LIST_HEAD(, nfsrv_descript) ns_tq;      /* Write gather lists */

        LIST_HEAD(nfsrv_wg_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ];
 };
 
 /* Bits for "ns_flag" */
        LIST_HEAD(nfsrv_wg_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ];
 };
 
 /* Bits for "ns_flag" */

-#define        SLP_VALID       0x0001 /* nfs sock valid */
-#define        SLP_DOREC       0x0002 /* nfs sock has received data to process */
-#define        SLP_NEEDQ       0x0004 /* network socket has data to receive */
-#define        SLP_DISCONN     0x0008 /* socket needs to be zapped */
-#define        SLP_GETSTREAM   0x0010 /* currently in nfsrv_getstream() */
-#define        SLP_LASTFRAG    0x0020 /* on last fragment of RPC record */
-#define        SLP_DOWRITES    0x0040 /* nfs sock has gathered writes to service */
-#define SLP_WORKTODO   0x004e /* mask of all "work to do" flags */
-#define SLP_ALLFLAGS   0x007f
-#define        SLP_WAITQ       0x4000 /* nfs sock is on the wait queue */
-#define        SLP_WORKQ       0x8000 /* nfs sock is on the work queue */
-#define        SLP_QUEUED      0xc000 /* nfs sock is on a queue */
-
-#define SLPNOLIST ((struct nfsrv_sock *)0xdeadbeef)    /* sentinel value for sockets not in the nfsrv_sockwg list */
-
-__private_extern__ struct nfsrv_sock *nfsrv_udpsock;
+#define SLP_VALID       0x0001 /* nfs sock valid */
+#define SLP_DOREC       0x0002 /* nfs sock has received data to process */
+#define SLP_NEEDQ       0x0004 /* network socket has data to receive */
+#define SLP_DISCONN     0x0008 /* socket needs to be zapped */
+#define SLP_GETSTREAM   0x0010 /* currently in nfsrv_getstream() */
+#define SLP_LASTFRAG    0x0020 /* on last fragment of RPC record */
+#define SLP_DOWRITES    0x0040 /* nfs sock has gathered writes to service */
+#define SLP_WORKTODO    0x004e /* mask of all "work to do" flags */
+#define SLP_ALLFLAGS    0x007f
+#define SLP_WAITQ       0x4000 /* nfs sock is on the wait queue */
+#define SLP_WORKQ       0x8000 /* nfs sock is on the work queue */
+#define SLP_QUEUED      0xc000 /* nfs sock is on a queue */
+
+#define SLPNOLIST ((struct nfsrv_sock *)0xdeadbeef)     /* sentinel value for sockets not in the nfsrv_sockwg list */
+
+extern struct nfsrv_sock *nfsrv_udpsock, *nfsrv_udp6sock;

 
 /*
  * global NFS server socket lists:
 
 /*
  * global NFS server socket lists:


@@ -949,255 +1076,478 @@ __private_extern__ struct nfsrv_sock *nfsrv_udpsock;
  * nfsrv_sockwork - sockets being worked on which may have more work to do (ns_svcq)
  * nfsrv_sockwg - sockets with pending write gather input (ns_wgq)
  */
  * nfsrv_sockwork - sockets being worked on which may have more work to do (ns_svcq)
  * nfsrv_sockwg - sockets with pending write gather input (ns_wgq)
  */

-__private_extern__ TAILQ_HEAD(nfsrv_sockhead, nfsrv_sock) nfsrv_socklist, nfsrv_deadsocklist,
-                                               nfsrv_sockwg, nfsrv_sockwait, nfsrv_sockwork;
+extern TAILQ_HEAD(nfsrv_sockhead, nfsrv_sock) nfsrv_socklist, nfsrv_sockwg,
+nfsrv_sockwait, nfsrv_sockwork;

 
 /* lock groups for nfsrv_sock's */
 
 /* lock groups for nfsrv_sock's */

-__private_extern__ lck_grp_t *nfsrv_slp_rwlock_group;
-__private_extern__ lck_grp_t *nfsrv_slp_mutex_group;
+extern lck_grp_t *nfsrv_slp_rwlock_group;
+extern lck_grp_t *nfsrv_slp_mutex_group;

 
 /*
  * One of these structures is allocated for each nfsd.
  */
 struct nfsd {
 
 /*
  * One of these structures is allocated for each nfsd.
  */
 struct nfsd {

-       TAILQ_ENTRY(nfsd)       nfsd_chain;     /* List of all nfsd's */
-       TAILQ_ENTRY(nfsd)       nfsd_queue;     /* List of waiting nfsd's */
-       int                     nfsd_flag;      /* NFSD_ flags */
-       struct nfsrv_sock       *nfsd_slp;      /* Current socket */
-       struct nfsrv_descript   *nfsd_nd;       /* Associated nfsrv_descript */
+       TAILQ_ENTRY(nfsd)       nfsd_chain;     /* List of all nfsd's */
+       TAILQ_ENTRY(nfsd)       nfsd_queue;     /* List of waiting nfsd's */
+       int                     nfsd_flag;      /* NFSD_ flags */
+       struct nfsrv_sock       *nfsd_slp;      /* Current socket */
+       struct nfsrv_descript   *nfsd_nd;       /* Associated nfsrv_descript */

 };
 
 /* Bits for "nfsd_flag" */
 };
 
 /* Bits for "nfsd_flag" */

-#define        NFSD_WAITING    0x01
-#define        NFSD_REQINPROG  0x02
+#define NFSD_WAITING    0x01
+#define NFSD_REQINPROG  0x02

 
 /*
  * This structure is used by the server for describing each request.
  * Some fields are used only when write request gathering is performed.
  */
 struct nfsrv_descript {
 
 /*
  * This structure is used by the server for describing each request.
  * Some fields are used only when write request gathering is performed.
  */
 struct nfsrv_descript {

-       u_quad_t                nd_time;        /* Write deadline (usec) */
-       off_t                   nd_off;         /* Start byte offset */
-       off_t                   nd_eoff;        /* and end byte offset */
-       LIST_ENTRY(nfsrv_descript) nd_hash;     /* Hash list */
-       LIST_ENTRY(nfsrv_descript) nd_tq;       /* and timer list */
-       LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */
-       struct nfsm_chain       nd_nmreq;       /* Request mbuf chain */
-       mbuf_t                  nd_mrep;        /* Reply mbuf list (WG) */
-       mbuf_t                  nd_nam;         /* and socket addr */
-       mbuf_t                  nd_nam2;        /* return socket addr */
-       u_int32_t               nd_procnum;     /* RPC # */
-       int                     nd_stable;      /* storage type */
-       int                     nd_vers;        /* NFS version */
-       int                     nd_len;         /* Length of this write */
-       int                     nd_repstat;     /* Reply status */
-       u_long                  nd_retxid;      /* Reply xid */
-       struct timeval          nd_starttime;   /* Time RPC initiated */
-       struct nfs_filehandle   nd_fh;          /* File handle */
-       uint32_t                nd_sec;         /* Security flavor */
-       struct nfs_gss_svc_ctx  *nd_gss_context;/* RPCSEC_GSS context */
-       uint32_t                nd_gss_seqnum;  /* RPCSEC_GSS seq num */
-       mbuf_t                  nd_gss_mb;      /* RPCSEC_GSS results mbuf */
-       kauth_cred_t            nd_cr;          /* Credentials */
+       u_quad_t                nd_time;        /* Write deadline (usec) */
+       off_t                   nd_off;         /* Start byte offset */
+       off_t                   nd_eoff;        /* and end byte offset */
+       LIST_ENTRY(nfsrv_descript) nd_hash;     /* Hash list */
+       LIST_ENTRY(nfsrv_descript) nd_tq;       /* and timer list */
+       LIST_HEAD(, nfsrv_descript) nd_coalesce; /* coalesced writes */
+       struct nfsm_chain       nd_nmreq;       /* Request mbuf chain */
+       mbuf_t                  nd_mrep;        /* Reply mbuf list (WG) */
+       mbuf_t                  nd_nam;         /* and socket addr */
+       mbuf_t                  nd_nam2;        /* return socket addr */
+       u_int32_t               nd_procnum;     /* RPC # */
+       int                     nd_stable;      /* storage type */
+       int                     nd_vers;        /* NFS version */
+       int                     nd_len;         /* Length of this write */
+       int                     nd_repstat;     /* Reply status */
+       u_int32_t                       nd_retxid;      /* Reply xid */
+       struct timeval          nd_starttime;   /* Time RPC initiated */
+       struct nfs_filehandle   nd_fh;          /* File handle */
+       uint32_t                nd_sec;         /* Security flavor */
+       struct nfs_gss_svc_ctx  *nd_gss_context;/* RPCSEC_GSS context */
+       uint32_t                nd_gss_seqnum;  /* RPCSEC_GSS seq num */
+       mbuf_t                  nd_gss_mb;      /* RPCSEC_GSS results mbuf */
+       kauth_cred_t            nd_cr;          /* Credentials */

 };
 
 };
 

-__private_extern__ TAILQ_HEAD(nfsd_head, nfsd) nfsd_head, nfsd_queue;
+extern TAILQ_HEAD(nfsd_head, nfsd) nfsd_head, nfsd_queue;
+
+typedef int (*nfsrv_proc_t)(struct nfsrv_descript *, struct nfsrv_sock *,
+    vfs_context_t, mbuf_t *);

 
 /* mutex for nfs server */
 
 /* mutex for nfs server */

-__private_extern__ lck_mtx_t *nfsd_mutex;
-__private_extern__ int nfsd_thread_count, nfsd_thread_max;
+extern lck_mtx_t *nfsd_mutex;
+extern int nfsd_thread_count, nfsd_thread_max;

 
 /* request list mutex */
 
 /* request list mutex */

-__private_extern__ lck_mtx_t *nfs_request_mutex;
-__private_extern__ int nfs_request_timer_on;
+extern lck_mtx_t *nfs_request_mutex;
+extern int nfs_request_timer_on;
+
+/* mutex for nfs client globals */
+extern lck_mtx_t *nfs_global_mutex;
+
+#if CONFIG_NFS4
+/* NFSv4 callback globals */
+extern int nfs4_callback_timer_on;
+extern in_port_t nfs4_cb_port, nfs4_cb_port6;
+
+/* nfs 4 default domain for user mapping */
+extern char nfs4_default_domain[MAXPATHLEN];
+/* nfs 4 timer call structure */
+extern thread_call_t    nfs4_callback_timer_call;
+#endif

 
 /* nfs timer call structures */
 
 /* nfs timer call structures */

-__private_extern__ thread_call_t       nfs_request_timer_call;
-__private_extern__ thread_call_t       nfs_buf_timer_call;
-__private_extern__ thread_call_t       nfsrv_deadsock_timer_call;
-__private_extern__ thread_call_t       nfsrv_fmod_timer_call;
+extern thread_call_t    nfs_request_timer_call;
+extern thread_call_t    nfs_buf_timer_call;
+extern thread_call_t    nfsrv_idlesock_timer_call;
+#if CONFIG_FSE
+extern thread_call_t    nfsrv_fmod_timer_call;
+#endif

 
 __BEGIN_DECLS
 
 
 __BEGIN_DECLS
 

-nfstype        vtonfs_type(enum vtype, int);
+nfstype vtonfs_type(enum vtype, int);

 enum vtype nfstov_type(nfstype, int);
 enum vtype nfstov_type(nfstype, int);

-int    vtonfsv2_mode(enum vtype, mode_t);
-
-void   nfs_mbuf_init(void);
-
-void   nfs_nhinit(void);
-void   nfs_nhinit_finish(void);
-u_long nfs_hash(u_char *, int);
-
-int    nfs4_setclientid(struct nfsmount *);
-void   nfs4_renew_timer(void *, void *);
-int    nfs_connect(struct nfsmount *);
-void   nfs_disconnect(struct nfsmount *);
-void   nfs_mount_sock_thread_wake(struct nfsmount *);
-
-int    nfs_getattr(nfsnode_t, struct nfs_vattr *, vfs_context_t, int);
-int    nfs_getattrcache(nfsnode_t, struct nfs_vattr *, int);
-int    nfs_loadattrcache(nfsnode_t, struct nfs_vattr *, u_int64_t *, int);
-int    nfs_attrcachetimeout(nfsnode_t);
-
-int    nfs_buf_page_inval(vnode_t vp, off_t offset);
-int    nfs_vinvalbuf(vnode_t, int, vfs_context_t, int);
-int    nfs_vinvalbuf2(vnode_t, int, thread_t, kauth_cred_t, int);
-
-int    nfs_request_create(nfsnode_t, mount_t, struct nfsm_chain *, int, thread_t, kauth_cred_t, struct nfsreq **);
-void   nfs_request_destroy(struct nfsreq *);
-void   nfs_request_ref(struct nfsreq *, int);
-void   nfs_request_rele(struct nfsreq *);
-int    nfs_request_add_header(struct nfsreq *);
-int    nfs_request_send(struct nfsreq *, int);
-void   nfs_request_wait(struct nfsreq *);
-int    nfs_request_finish(struct nfsreq *, struct nfsm_chain *, int *);
-int    nfs_request(nfsnode_t, mount_t, struct nfsm_chain *, int, vfs_context_t, struct nfsm_chain *, u_int64_t *, int *);
-int    nfs_request2(nfsnode_t, mount_t, struct nfsm_chain *, int, thread_t, kauth_cred_t, int, struct nfsm_chain *, u_int64_t *, int *);
-int    nfs_request_async(nfsnode_t, mount_t, struct nfsm_chain *, int, thread_t, kauth_cred_t, struct nfsreq_cbinfo *cb, struct nfsreq **);
-int    nfs_request_async_finish(struct nfsreq *, struct nfsm_chain *, u_int64_t *, int *);
-void   nfs_request_async_cancel(struct nfsreq *);
-void   nfs_request_timer(void *, void *);
-int    nfs_sigintr(struct nfsmount *, struct nfsreq *, thread_t, int);
-int    nfs_noremotehang(thread_t);
-
-int    nfs_send(struct nfsreq *, int);
-int    nfs_sndlock(struct nfsreq *);
-void   nfs_sndunlock(struct nfsreq *);
-
-int    nfs_lookitup(nfsnode_t, char *, int, vfs_context_t, nfsnode_t *);
-void   nfs_dulookup_init(struct nfs_dulookup *, nfsnode_t, const char *, int);
-void   nfs_dulookup_start(struct nfs_dulookup *, nfsnode_t, vfs_context_t);
-void   nfs_dulookup_finish(struct nfs_dulookup *, nfsnode_t, vfs_context_t);
-
-int    nfs_parsefattr(struct nfsm_chain *, int, struct nfs_vattr *);
-int    nfs4_parsefattr(struct nfsm_chain *, struct nfs_fsattr *, struct nfs_vattr *, fhandle_t *, struct dqblk *);
-void   nfs_vattr_set_supported(uint32_t *, struct vnode_attr *);
-void   nfs3_pathconf_cache(struct nfsmount *, struct nfs_fsattr *);
-int    nfs_node_mode_slot(nfsnode_t, uid_t, int);
-
-int    nfs_vnop_access(struct vnop_access_args *);
-
-int    nfs3_vnop_open(struct vnop_open_args *);
-int    nfs3_vnop_close(struct vnop_close_args *);
-
-int    nfs4_vnop_create(struct vnop_create_args *);
-int    nfs4_vnop_mknod(struct vnop_mknod_args *);
-int    nfs4_vnop_open(struct vnop_open_args *);
-int    nfs4_vnop_close(struct vnop_close_args *);
-int    nfs4_vnop_getattr(struct vnop_getattr_args *);
-int    nfs4_vnop_link(struct vnop_link_args *);
-int    nfs4_vnop_mkdir(struct vnop_mkdir_args *);
-int    nfs4_vnop_rmdir(struct vnop_rmdir_args *);
-int    nfs4_vnop_symlink(struct vnop_symlink_args *);
-int    nfs4_vnop_advlock(struct vnop_advlock_args *ap);
-
-int    nfs_read_rpc(nfsnode_t, struct uio *, vfs_context_t);
-int    nfs_write_rpc(nfsnode_t, struct uio *, vfs_context_t, int *, uint64_t *);
-int    nfs_write_rpc2(nfsnode_t, struct uio *, thread_t, kauth_cred_t, int *, uint64_t *);
-
-int    nfs3_access_rpc(nfsnode_t, u_long *, vfs_context_t);
-int    nfs4_access_rpc(nfsnode_t, u_long *, vfs_context_t);
-int    nfs3_getattr_rpc(nfsnode_t, mount_t, u_char *, size_t, vfs_context_t, struct nfs_vattr *, u_int64_t *);
-int    nfs4_getattr_rpc(nfsnode_t, mount_t, u_char *, size_t, vfs_context_t, struct nfs_vattr *, u_int64_t *);
-int    nfs3_setattr_rpc(nfsnode_t, struct vnode_attr *, vfs_context_t, int);
-int    nfs4_setattr_rpc(nfsnode_t, struct vnode_attr *, vfs_context_t, int);
-int    nfs3_read_rpc_async(nfsnode_t, off_t, size_t, thread_t, kauth_cred_t, struct nfsreq_cbinfo *, struct nfsreq **);
-int    nfs4_read_rpc_async(nfsnode_t, off_t, size_t, thread_t, kauth_cred_t, struct nfsreq_cbinfo *, struct nfsreq **);
-int    nfs3_read_rpc_async_finish(nfsnode_t, struct nfsreq *, struct uio *, size_t *, int *);
-int    nfs4_read_rpc_async_finish(nfsnode_t, struct nfsreq *, struct uio *, size_t *, int *);
-int    nfs3_write_rpc_async(nfsnode_t, struct uio *, size_t, thread_t, kauth_cred_t, int, struct nfsreq_cbinfo *, struct nfsreq **);
-int    nfs4_write_rpc_async(nfsnode_t, struct uio *, size_t, thread_t, kauth_cred_t, int, struct nfsreq_cbinfo *, struct nfsreq **);
-int    nfs3_write_rpc_async_finish(nfsnode_t, struct nfsreq *, int *, size_t *, uint64_t *);
-int    nfs4_write_rpc_async_finish(nfsnode_t, struct nfsreq *, int *, size_t *, uint64_t *);
-int    nfs3_readdir_rpc(nfsnode_t, struct uio *, vfs_context_t);
-int    nfs3_readdirplus_rpc(nfsnode_t, struct uio *, vfs_context_t);
-int    nfs4_readdir_rpc(nfsnode_t, struct uio *, vfs_context_t);
-int    nfs3_readlink_rpc(nfsnode_t, char *, uint32_t *, vfs_context_t);
-int    nfs4_readlink_rpc(nfsnode_t, char *, uint32_t *, vfs_context_t);
-int    nfs3_commit_rpc(nfsnode_t, u_int64_t, u_int64_t, kauth_cred_t);
-int    nfs4_commit_rpc(nfsnode_t, u_int64_t, u_int64_t, kauth_cred_t);
-int    nfs3_lookup_rpc_async(nfsnode_t, char *, int, vfs_context_t, struct nfsreq **);
-int    nfs4_lookup_rpc_async(nfsnode_t, char *, int, vfs_context_t, struct nfsreq **);
-int    nfs3_lookup_rpc_async_finish(nfsnode_t, vfs_context_t, struct nfsreq *, u_int64_t *, fhandle_t *, struct nfs_vattr *);
-int    nfs4_lookup_rpc_async_finish(nfsnode_t, vfs_context_t, struct nfsreq *, u_int64_t *, fhandle_t *, struct nfs_vattr *);
-int    nfs3_remove_rpc(nfsnode_t, char *, int, thread_t, kauth_cred_t);
-int    nfs4_remove_rpc(nfsnode_t, char *, int, thread_t, kauth_cred_t);
-int    nfs3_rename_rpc(nfsnode_t, char *, int, nfsnode_t, char *, int, vfs_context_t);
-int    nfs4_rename_rpc(nfsnode_t, char *, int, nfsnode_t, char *, int, vfs_context_t);
-int    nfs3_pathconf_rpc(nfsnode_t, struct nfs_fsattr *, vfs_context_t);
-int    nfs4_pathconf_rpc(nfsnode_t, struct nfs_fsattr *, vfs_context_t);
-
-void   nfsrv_active_user_list_reclaim(void);
-void   nfsrv_cleancache(void);
-void   nfsrv_cleanup(void);
-int    nfsrv_credcheck(struct nfsrv_descript *, vfs_context_t, struct nfs_export *,
-                       struct nfs_export_options *);
-void   nfsrv_deadsock_timer(void *, void *);
-int    nfsrv_dorec(struct nfsrv_sock *, struct nfsd *, struct nfsrv_descript **);
-int    nfsrv_errmap(struct nfsrv_descript *, int);
-int    nfsrv_export(struct user_nfs_export_args *, vfs_context_t);
-int    nfsrv_fhmatch(struct nfs_filehandle *, struct nfs_filehandle *);
-int    nfsrv_fhtovp(struct nfs_filehandle *, struct nfsrv_descript *, vnode_t *,
-                       struct nfs_export **, struct nfs_export_options **);
-void   nfsrv_fmod_timer(void *, void *);
-int    nfsrv_getcache(struct nfsrv_descript *, struct nfsrv_sock *, mbuf_t *);
-void   nfsrv_group_sort(gid_t *, int);
-void   nfsrv_init(void);
-void   nfsrv_initcache(void);
-int    nfsrv_is_initialized(void);
-int    nfsrv_namei(struct nfsrv_descript *, vfs_context_t, struct nameidata *,
-                       struct nfs_filehandle *, vnode_t *,
-                       struct nfs_export **, struct nfs_export_options **);
-void   nfsrv_rcv(socket_t, caddr_t, int);
-void   nfsrv_rcv_locked(socket_t, struct nfsrv_sock *, int);
-int    nfsrv_rephead(struct nfsrv_descript *, struct nfsrv_sock *, struct nfsm_chain *, size_t);
-int    nfsrv_send(struct nfsrv_sock *, mbuf_t, mbuf_t);
-void   nfsrv_updatecache(struct nfsrv_descript *, int, mbuf_t);
-void   nfsrv_update_user_stat(struct nfs_export *, struct nfsrv_descript *, uid_t, u_int, u_int, u_int);
-int    nfsrv_vptofh(struct nfs_export *, int, struct nfs_filehandle *,
-                       vnode_t, vfs_context_t, struct nfs_filehandle *);
-void   nfsrv_wakenfsd(struct nfsrv_sock *);
-void   nfsrv_wg_timer(void *, void *);
-int    nfsrv_writegather(struct nfsrv_descript **, struct nfsrv_sock *,
-                              vfs_context_t, mbuf_t *);
-
-int    nfsrv_access(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_commit(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_create(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_fsinfo(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_getattr(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_link(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_lookup(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_mkdir(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_mknod(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_noop(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_null(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_pathconf(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_read(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_readdir(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_readdirplus(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_readlink(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_remove(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_rename(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_rmdir(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_setattr(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_statfs(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_symlink(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-int    nfsrv_write(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
-
-void   nfs_interval_timer_start(thread_call_t, int);
-void   nfs_up(struct nfsmount *, thread_t, int, const char *);
-void   nfs_down(struct nfsmount *, thread_t, int, int, const char *);
-
-int    nfs_mountroot(void);
+int     vtonfsv2_mode(enum vtype, mode_t);
+
+void    nfs_mbuf_init(void);
+
+void    nfs_nhinit(void);
+void    nfs_nhinit_finish(void);
+u_long  nfs_hash(u_char *, int);
+
+#if CONFIG_NFS4
+int     nfs4_init_clientid(struct nfsmount *);
+int     nfs4_setclientid(struct nfsmount *);
+int     nfs4_renew(struct nfsmount *, int);
+void    nfs4_renew_timer(void *, void *);
+void    nfs4_mount_callback_setup(struct nfsmount *);
+void    nfs4_mount_callback_shutdown(struct nfsmount *);
+void    nfs4_cb_accept(socket_t, void *, int);
+void    nfs4_cb_rcv(socket_t, void *, int);
+void    nfs4_callback_timer(void *, void *);
+int     nfs4_secinfo_rpc(struct nfsmount *, struct nfsreq_secinfo_args *, kauth_cred_t, uint32_t *, int *);
+int     nfs4_get_fs_locations(struct nfsmount *, nfsnode_t, u_char *, int, const char *, vfs_context_t, struct nfs_fs_locations *);
+void    nfs4_default_attrs_for_referral_trigger(nfsnode_t, char *, int, struct nfs_vattr *, fhandle_t *);
+#endif
+
+void    nfs_fs_locations_cleanup(struct nfs_fs_locations *);
+
+int     nfs_sockaddr_cmp(struct sockaddr *, struct sockaddr *);
+int     nfs_connect(struct nfsmount *, int, int);
+void    nfs_disconnect(struct nfsmount *);
+void    nfs_need_reconnect(struct nfsmount *);
+void    nfs_mount_sock_thread_wake(struct nfsmount *);
+int     nfs_mount_check_dead_timeout(struct nfsmount *);
+int     nfs_mount_gone(struct nfsmount *);
+void    nfs_mount_rele(struct nfsmount *);
+void    nfs_mount_zombie(struct nfsmount *, int);
+void    nfs_mount_make_zombie(struct nfsmount *);
+
+void    nfs_rpc_record_state_init(struct nfs_rpc_record_state *);
+void    nfs_rpc_record_state_cleanup(struct nfs_rpc_record_state *);
+int     nfs_rpc_record_read(socket_t, struct nfs_rpc_record_state *, int, int *, mbuf_t *);
+
+int     nfs_getattr(nfsnode_t, struct nfs_vattr *, vfs_context_t, int);
+int     nfs_getattrcache(nfsnode_t, struct nfs_vattr *, int);
+int     nfs_loadattrcache(nfsnode_t, struct nfs_vattr *, u_int64_t *, int);
+int     nfs_attrcachetimeout(nfsnode_t);
+
+int     nfs_buf_page_inval(vnode_t vp, off_t offset);
+int     nfs_vinvalbuf(vnode_t, int, vfs_context_t, int);
+int     nfs_vinvalbuf2(vnode_t, int, thread_t, kauth_cred_t, int);
+int     nfs_vinvalbuf_internal(nfsnode_t, int, thread_t, kauth_cred_t, int, int);
+void    nfs_wait_bufs(nfsnode_t);
+
+int     nfs_request_create(nfsnode_t, mount_t, struct nfsm_chain *, int, thread_t, kauth_cred_t, struct nfsreq **);
+void    nfs_request_destroy(struct nfsreq *);
+void    nfs_request_ref(struct nfsreq *, int);
+void    nfs_request_rele(struct nfsreq *);
+int     nfs_request_add_header(struct nfsreq *);
+int     nfs_request_send(struct nfsreq *, int);
+void    nfs_request_wait(struct nfsreq *);
+int     nfs_request_finish(struct nfsreq *, struct nfsm_chain *, int *);
+int     nfs_request(nfsnode_t, mount_t, struct nfsm_chain *, int, vfs_context_t, struct nfsreq_secinfo_args *, struct nfsm_chain *, u_int64_t *, int *);
+int     nfs_request2(nfsnode_t, mount_t, struct nfsm_chain *, int, thread_t, kauth_cred_t, struct nfsreq_secinfo_args *, int, struct nfsm_chain *, u_int64_t *, int *);
+int     nfs_request_gss(mount_t, struct nfsm_chain *, thread_t, kauth_cred_t, int, struct nfs_gss_clnt_ctx *, struct nfsm_chain *, int *);
+int     nfs_request_async(nfsnode_t, mount_t, struct nfsm_chain *, int, thread_t, kauth_cred_t, struct nfsreq_secinfo_args *, int, struct nfsreq_cbinfo *, struct nfsreq **);
+int     nfs_request_async_finish(struct nfsreq *, struct nfsm_chain *, u_int64_t *, int *);
+void    nfs_request_async_cancel(struct nfsreq *);
+void    nfs_request_timer(void *, void *);
+int     nfs_request_using_gss(struct nfsreq *);
+void    nfs_get_xid(uint64_t *);
+int     nfs_sigintr(struct nfsmount *, struct nfsreq *, thread_t, int);
+int     nfs_noremotehang(thread_t);
+
+int     nfs_send(struct nfsreq *, int);
+int     nfs_sndlock(struct nfsreq *);
+void    nfs_sndunlock(struct nfsreq *);
+
+int     nfs_uaddr2sockaddr(const char *, struct sockaddr *);
+
+int     nfs_aux_request(struct nfsmount *, thread_t, struct sockaddr *, socket_t, int, mbuf_t, uint32_t, int, int, struct nfsm_chain *);
+int     nfs_portmap_lookup(struct nfsmount *, vfs_context_t, struct sockaddr *, socket_t, uint32_t, uint32_t, uint32_t, int);
+
+void    nfs_location_next(struct nfs_fs_locations *, struct nfs_location_index *);
+int     nfs_location_index_cmp(struct nfs_location_index *, struct nfs_location_index *);
+void    nfs_location_mntfromname(struct nfs_fs_locations *, struct nfs_location_index, char *, int, int);
+int     nfs_socket_create(struct nfsmount *, struct sockaddr *, int, in_port_t, uint32_t, uint32_t, int, struct nfs_socket **);
+void    nfs_socket_destroy(struct nfs_socket *);
+void    nfs_socket_options(struct nfsmount *, struct nfs_socket *);
+void    nfs_connect_upcall(socket_t, void *, int);
+int     nfs_connect_error_class(int);
+int     nfs_connect_search_loop(struct nfsmount *, struct nfs_socket_search *);
+void    nfs_socket_search_update_error(struct nfs_socket_search *, int);
+void    nfs_socket_search_cleanup(struct nfs_socket_search *);
+void    nfs_mount_connect_thread(void *, __unused wait_result_t);
+
+int     nfs_lookitup(nfsnode_t, char *, int, vfs_context_t, nfsnode_t *);
+void    nfs_dulookup_init(struct nfs_dulookup *, nfsnode_t, const char *, int, vfs_context_t);
+void    nfs_dulookup_start(struct nfs_dulookup *, nfsnode_t, vfs_context_t);
+void    nfs_dulookup_finish(struct nfs_dulookup *, nfsnode_t, vfs_context_t);
+int     nfs_dir_buf_cache_lookup(nfsnode_t, nfsnode_t *, struct componentname *, vfs_context_t, int);
+int     nfs_dir_buf_search(struct nfsbuf *, struct componentname *, fhandle_t *, struct nfs_vattr *, uint64_t *, time_t *, daddr64_t *, int);
+void    nfs_name_cache_purge(nfsnode_t, nfsnode_t, struct componentname *, vfs_context_t);
+
+#if CONFIG_NFS4
+uint32_t nfs4_ace_nfstype_to_vfstype(uint32_t, int *);
+uint32_t nfs4_ace_vfstype_to_nfstype(uint32_t, int *);
+uint32_t nfs4_ace_nfsflags_to_vfsflags(uint32_t);
+uint32_t nfs4_ace_vfsflags_to_nfsflags(uint32_t);
+uint32_t nfs4_ace_nfsmask_to_vfsrights(uint32_t);
+uint32_t nfs4_ace_vfsrights_to_nfsmask(uint32_t);
+int nfs4_id2guid(char *, guid_t *, int);
+int nfs4_guid2id(guid_t *, char *, size_t *, int);
+
+int     nfs4_parsefattr(struct nfsm_chain *, struct nfs_fsattr *, struct nfs_vattr *, fhandle_t *, struct dqblk *, struct nfs_fs_locations *);
+#endif
+
+int     nfs_parsefattr(struct nfsmount *nmp, struct nfsm_chain *, int,
+    struct nfs_vattr *);
+void    nfs_vattr_set_supported(uint32_t *, struct vnode_attr *);
+void    nfs_vattr_set_bitmap(struct nfsmount *, uint32_t *, struct vnode_attr *);
+void    nfs3_pathconf_cache(struct nfsmount *, struct nfs_fsattr *);
+int     nfs3_mount_rpc(struct nfsmount *, struct sockaddr *, int, int, char *, vfs_context_t, int, fhandle_t *, struct nfs_sec *);
+void    nfs3_umount_rpc(struct nfsmount *, vfs_context_t, int);
+int     nfs_node_access_slot(nfsnode_t, uid_t, int);
+void    nfs_vnode_notify(nfsnode_t, uint32_t);
+
+void    nfs_avoid_needless_id_setting_on_create(nfsnode_t, struct vnode_attr *, vfs_context_t);
+int     nfs_open_state_set_busy(nfsnode_t, thread_t);
+void    nfs_open_state_clear_busy(nfsnode_t);
+struct nfs_open_owner *nfs_open_owner_find(struct nfsmount *, kauth_cred_t, int);
+void    nfs_open_owner_destroy(struct nfs_open_owner *);
+void    nfs_open_owner_ref(struct nfs_open_owner *);
+void    nfs_open_owner_rele(struct nfs_open_owner *);
+int     nfs_open_owner_set_busy(struct nfs_open_owner *, thread_t);
+void    nfs_open_owner_clear_busy(struct nfs_open_owner *);
+void    nfs_owner_seqid_increment(struct nfs_open_owner *, struct nfs_lock_owner *, int);
+int     nfs_open_file_find(nfsnode_t, struct nfs_open_owner *, struct nfs_open_file **, uint32_t, uint32_t, int);
+int     nfs_open_file_find_internal(nfsnode_t, struct nfs_open_owner *, struct nfs_open_file **, uint32_t, uint32_t, int);
+void    nfs_open_file_destroy(struct nfs_open_file *);
+int     nfs_open_file_set_busy(struct nfs_open_file *, thread_t);
+void    nfs_open_file_clear_busy(struct nfs_open_file *);
+void    nfs_open_file_add_open(struct nfs_open_file *, uint32_t, uint32_t, int);
+void    nfs_open_file_remove_open_find(struct nfs_open_file *, uint32_t, uint32_t, uint32_t *, uint32_t *, int*);
+void    nfs_open_file_remove_open(struct nfs_open_file *, uint32_t, uint32_t);
+void    nfs_get_stateid(nfsnode_t, thread_t, kauth_cred_t, nfs_stateid *);
+int     nfs_check_for_locks(struct nfs_open_owner *, struct nfs_open_file *);
+int     nfs_close(nfsnode_t, struct nfs_open_file *, uint32_t, uint32_t, vfs_context_t);
+
+void    nfs_release_open_state_for_node(nfsnode_t, int);
+void    nfs_revoke_open_state_for_node(nfsnode_t);
+struct nfs_lock_owner *nfs_lock_owner_find(nfsnode_t, proc_t, int);
+void    nfs_lock_owner_destroy(struct nfs_lock_owner *);
+void    nfs_lock_owner_ref(struct nfs_lock_owner *);
+void    nfs_lock_owner_rele(struct nfs_lock_owner *);
+int     nfs_lock_owner_set_busy(struct nfs_lock_owner *, thread_t);
+void    nfs_lock_owner_clear_busy(struct nfs_lock_owner *);
+void    nfs_lock_owner_insert_held_lock(struct nfs_lock_owner *, struct nfs_file_lock *);
+struct nfs_file_lock *nfs_file_lock_alloc(struct nfs_lock_owner *);
+void    nfs_file_lock_destroy(struct nfs_file_lock *);
+int     nfs_file_lock_conflict(struct nfs_file_lock *, struct nfs_file_lock *, int *);
+int     nfs_unlock_rpc(nfsnode_t, struct nfs_lock_owner *, int, uint64_t, uint64_t, thread_t, kauth_cred_t, int);
+int     nfs_advlock_getlock(nfsnode_t, struct nfs_lock_owner *, struct flock *, uint64_t, uint64_t, vfs_context_t);
+int     nfs_advlock_setlock(nfsnode_t, struct nfs_open_file *, struct nfs_lock_owner *, int, uint64_t, uint64_t, int, short, vfs_context_t);
+int     nfs_advlock_unlock(nfsnode_t, struct nfs_open_file *, struct nfs_lock_owner *, uint64_t, uint64_t, int, vfs_context_t);
+
+#if CONFIG_NFS4
+int     nfs4_create_rpc(vfs_context_t, nfsnode_t, struct componentname *, struct vnode_attr *, int, char *, nfsnode_t *);
+int     nfs4_open(nfsnode_t, struct nfs_open_file *, uint32_t, uint32_t, vfs_context_t);
+int     nfs4_open_delegated(nfsnode_t, struct nfs_open_file *, uint32_t, uint32_t, vfs_context_t);
+int     nfs4_reopen(struct nfs_open_file *, thread_t);
+int     nfs4_open_rpc(struct nfs_open_file *, vfs_context_t, struct componentname *, struct vnode_attr *, vnode_t, vnode_t *, int, int, int);
+int     nfs4_open_rpc_internal(struct nfs_open_file *, vfs_context_t, thread_t, kauth_cred_t, struct componentname *, struct vnode_attr *, vnode_t, vnode_t *, int, int, int);
+int     nfs4_open_confirm_rpc(struct nfsmount *, nfsnode_t, u_char *, int, struct nfs_open_owner *, nfs_stateid *, thread_t, kauth_cred_t, struct nfs_vattr *, uint64_t *);
+int     nfs4_open_reopen_rpc(struct nfs_open_file *, thread_t, kauth_cred_t, struct componentname *, vnode_t, vnode_t *, int, int);
+int     nfs4_open_reclaim_rpc(struct nfs_open_file *, int, int);
+int     nfs4_claim_delegated_open_rpc(struct nfs_open_file *, int, int, int);
+int     nfs4_claim_delegated_state_for_open_file(struct nfs_open_file *, int);
+int     nfs4_claim_delegated_state_for_node(nfsnode_t, int);
+int     nfs4_open_downgrade_rpc(nfsnode_t, struct nfs_open_file *, vfs_context_t);
+int     nfs4_close_rpc(nfsnode_t, struct nfs_open_file *, thread_t, kauth_cred_t, int);
+void    nfs4_delegation_return_enqueue(nfsnode_t);
+int     nfs4_delegation_return(nfsnode_t, int, thread_t, kauth_cred_t);
+int     nfs4_lock_rpc(nfsnode_t, struct nfs_open_file *, struct nfs_file_lock *, int, int, thread_t, kauth_cred_t);
+int     nfs4_delegreturn_rpc(struct nfsmount *, u_char *, int, struct nfs_stateid *, int, thread_t, kauth_cred_t);
+
+nfsnode_t nfs4_named_attr_dir_get(nfsnode_t, int, vfs_context_t);
+int     nfs4_named_attr_get(nfsnode_t, struct componentname *, uint32_t, int, vfs_context_t, nfsnode_t *, struct nfs_open_file **);
+int     nfs4_named_attr_remove(nfsnode_t, nfsnode_t, const char *, vfs_context_t);
+#endif
+
+int     nfs_mount_state_in_use_start(struct nfsmount *, thread_t);
+int     nfs_mount_state_in_use_end(struct nfsmount *, int);
+int     nfs_mount_state_error_should_restart(int);
+int     nfs_mount_state_error_delegation_lost(int);
+uint    nfs_mount_state_max_restarts(struct nfsmount *);
+int     nfs_mount_state_wait_for_recovery(struct nfsmount *);
+void    nfs_need_recover(struct nfsmount *nmp, int error);
+void    nfs_recover(struct nfsmount *);
+
+int     nfs_vnop_access(struct vnop_access_args *);
+int     nfs_vnop_remove(struct vnop_remove_args *);
+int     nfs_vnop_read(struct vnop_read_args *);
+int     nfs_vnop_write(struct vnop_write_args *);
+int     nfs_vnop_open(struct vnop_open_args *);
+int     nfs_vnop_close(struct vnop_close_args *);
+int     nfs_vnop_advlock(struct vnop_advlock_args *);
+int     nfs_vnop_mmap(struct vnop_mmap_args *);
+int     nfs_vnop_mnomap(struct vnop_mnomap_args *);
+
+#if CONFIG_NFS4
+int     nfs4_vnop_create(struct vnop_create_args *);
+int     nfs4_vnop_mknod(struct vnop_mknod_args *);
+int     nfs4_vnop_close(struct vnop_close_args *);
+int     nfs4_vnop_getattr(struct vnop_getattr_args *);
+int     nfs4_vnop_link(struct vnop_link_args *);
+int     nfs4_vnop_mkdir(struct vnop_mkdir_args *);
+int     nfs4_vnop_rmdir(struct vnop_rmdir_args *);
+int     nfs4_vnop_symlink(struct vnop_symlink_args *);
+int     nfs4_vnop_getxattr(struct vnop_getxattr_args *);
+int     nfs4_vnop_setxattr(struct vnop_setxattr_args *);
+int     nfs4_vnop_removexattr(struct vnop_removexattr_args *);
+int     nfs4_vnop_listxattr(struct vnop_listxattr_args *);
+#if NAMEDSTREAMS
+int     nfs4_vnop_getnamedstream(struct vnop_getnamedstream_args *);
+int     nfs4_vnop_makenamedstream(struct vnop_makenamedstream_args *);
+int     nfs4_vnop_removenamedstream(struct vnop_removenamedstream_args *);
+#endif
+
+int     nfs4_access_rpc(nfsnode_t, u_int32_t *, int, vfs_context_t);
+int     nfs4_getattr_rpc(nfsnode_t, mount_t, u_char *, size_t, int, vfs_context_t, struct nfs_vattr *, u_int64_t *);
+int     nfs4_setattr_rpc(nfsnode_t, struct vnode_attr *, vfs_context_t);
+int     nfs4_read_rpc_async(nfsnode_t, off_t, size_t, thread_t, kauth_cred_t, struct nfsreq_cbinfo *, struct nfsreq **);
+int     nfs4_read_rpc_async_finish(nfsnode_t, struct nfsreq *, uio_t, size_t *, int *);
+int     nfs4_write_rpc_async(nfsnode_t, uio_t, size_t, thread_t, kauth_cred_t, int, struct nfsreq_cbinfo *, struct nfsreq **);
+int     nfs4_write_rpc_async_finish(nfsnode_t, struct nfsreq *, int *, size_t *, uint64_t *);
+int     nfs4_readdir_rpc(nfsnode_t, struct nfsbuf *, vfs_context_t);
+int     nfs4_readlink_rpc(nfsnode_t, char *, uint32_t *, vfs_context_t);
+int     nfs4_commit_rpc(nfsnode_t, uint64_t, uint64_t, kauth_cred_t, uint64_t);
+int     nfs4_lookup_rpc_async(nfsnode_t, char *, int, vfs_context_t, struct nfsreq **);
+int     nfs4_lookup_rpc_async_finish(nfsnode_t, char *, int, vfs_context_t, struct nfsreq *, u_int64_t *, fhandle_t *, struct nfs_vattr *);
+int     nfs4_remove_rpc(nfsnode_t, char *, int, thread_t, kauth_cred_t);
+int     nfs4_rename_rpc(nfsnode_t, char *, int, nfsnode_t, char *, int, vfs_context_t);
+int     nfs4_pathconf_rpc(nfsnode_t, struct nfs_fsattr *, vfs_context_t);
+int     nfs4_setlock_rpc(nfsnode_t, struct nfs_open_file *, struct nfs_file_lock *, int, int, thread_t, kauth_cred_t);
+int     nfs4_unlock_rpc(nfsnode_t, struct nfs_lock_owner *, int, uint64_t, uint64_t, int, thread_t, kauth_cred_t);
+int     nfs4_getlock_rpc(nfsnode_t, struct nfs_lock_owner *, struct flock *, uint64_t, uint64_t, vfs_context_t);
+#endif
+
+int     nfs_read_rpc(nfsnode_t, uio_t, vfs_context_t);
+int     nfs_write_rpc(nfsnode_t, uio_t, vfs_context_t, int *, uint64_t *);
+int     nfs_write_rpc2(nfsnode_t, uio_t, thread_t, kauth_cred_t, int *, uint64_t *);
+
+int     nfs3_access_rpc(nfsnode_t, u_int32_t *, int, vfs_context_t);
+int     nfs3_getattr_rpc(nfsnode_t, mount_t, u_char *, size_t, int, vfs_context_t, struct nfs_vattr *, u_int64_t *);
+int     nfs3_setattr_rpc(nfsnode_t, struct vnode_attr *, vfs_context_t);
+int     nfs3_read_rpc_async(nfsnode_t, off_t, size_t, thread_t, kauth_cred_t, struct nfsreq_cbinfo *, struct nfsreq **);
+int     nfs3_read_rpc_async_finish(nfsnode_t, struct nfsreq *, uio_t, size_t *, int *);
+int     nfs3_write_rpc_async(nfsnode_t, uio_t, size_t, thread_t, kauth_cred_t, int, struct nfsreq_cbinfo *, struct nfsreq **);
+int     nfs3_write_rpc_async_finish(nfsnode_t, struct nfsreq *, int *, size_t *, uint64_t *);
+int     nfs3_readdir_rpc(nfsnode_t, struct nfsbuf *, vfs_context_t);
+int     nfs3_readlink_rpc(nfsnode_t, char *, uint32_t *, vfs_context_t);
+int     nfs3_commit_rpc(nfsnode_t, uint64_t, uint64_t, kauth_cred_t, uint64_t);
+int     nfs3_lookup_rpc_async(nfsnode_t, char *, int, vfs_context_t, struct nfsreq **);
+int     nfs3_lookup_rpc_async_finish(nfsnode_t, char *, int, vfs_context_t, struct nfsreq *, u_int64_t *, fhandle_t *, struct nfs_vattr *);
+int     nfs3_remove_rpc(nfsnode_t, char *, int, thread_t, kauth_cred_t);
+int     nfs3_rename_rpc(nfsnode_t, char *, int, nfsnode_t, char *, int, vfs_context_t);
+int     nfs3_pathconf_rpc(nfsnode_t, struct nfs_fsattr *, vfs_context_t);
+int     nfs3_setlock_rpc(nfsnode_t, struct nfs_open_file *, struct nfs_file_lock *, int, int, thread_t, kauth_cred_t);
+int     nfs3_unlock_rpc(nfsnode_t, struct nfs_lock_owner *, int, uint64_t, uint64_t, int, thread_t, kauth_cred_t);
+int     nfs3_getlock_rpc(nfsnode_t, struct nfs_lock_owner *, struct flock *, uint64_t, uint64_t, vfs_context_t);
+
+void    nfsrv_active_user_list_reclaim(void);
+void    nfsrv_cleancache(void);
+void    nfsrv_cleanup(void);
+int     nfsrv_credcheck(struct nfsrv_descript *, vfs_context_t, struct nfs_export *,
+    struct nfs_export_options *);
+void    nfsrv_idlesock_timer(void *, void *);
+int     nfsrv_dorec(struct nfsrv_sock *, struct nfsd *, struct nfsrv_descript **);
+int     nfsrv_errmap(struct nfsrv_descript *, int);
+int     nfsrv_export(struct user_nfs_export_args *, vfs_context_t);
+int     nfsrv_fhmatch(struct nfs_filehandle *, struct nfs_filehandle *);
+int     nfsrv_fhtovp(struct nfs_filehandle *, struct nfsrv_descript *, vnode_t *,
+    struct nfs_export **, struct nfs_export_options **);
+int     nfsrv_check_exports_allow_address(mbuf_t);
+#if CONFIG_FSE
+void    nfsrv_fmod_timer(void *, void *);
+#endif
+int     nfsrv_getcache(struct nfsrv_descript *, struct nfsrv_sock *, mbuf_t *);
+void    nfsrv_group_sort(gid_t *, int);
+void    nfsrv_init(void);
+void    nfsrv_initcache(void);
+int     nfsrv_is_initialized(void);
+int     nfsrv_namei(struct nfsrv_descript *, vfs_context_t, struct nameidata *,
+    struct nfs_filehandle *, vnode_t *,
+    struct nfs_export **, struct nfs_export_options **);
+void    nfsrv_rcv(socket_t, void *, int);
+void    nfsrv_rcv_locked(socket_t, struct nfsrv_sock *, int);
+int     nfsrv_rephead(struct nfsrv_descript *, struct nfsrv_sock *, struct nfsm_chain *, size_t);
+int     nfsrv_send(struct nfsrv_sock *, mbuf_t, mbuf_t);
+void    nfsrv_updatecache(struct nfsrv_descript *, int, mbuf_t);
+void    nfsrv_update_user_stat(struct nfs_export *, struct nfsrv_descript *, uid_t, u_int, u_int, u_int);
+int     nfsrv_vptofh(struct nfs_export *, int, struct nfs_filehandle *,
+    vnode_t, vfs_context_t, struct nfs_filehandle *);
+void    nfsrv_wakenfsd(struct nfsrv_sock *);
+void    nfsrv_wg_timer(void *, void *);
+int     nfsrv_writegather(struct nfsrv_descript **, struct nfsrv_sock *,
+    vfs_context_t, mbuf_t *);
+
+int     nfsrv_access(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_commit(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_create(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_fsinfo(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_getattr(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_link(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_lookup(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_mkdir(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_mknod(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_noop(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_null(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_pathconf(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_read(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_readdir(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_readdirplus(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_readlink(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_remove(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_rename(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_rmdir(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_setattr(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_statfs(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_symlink(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+int     nfsrv_write(struct nfsrv_descript *, struct nfsrv_sock *, vfs_context_t, mbuf_t *);
+
+void    nfs_interval_timer_start(thread_call_t, int);
+int     nfs_use_cache(struct nfsmount *);
+void    nfs_up(struct nfsmount *, thread_t, int, const char *);
+void    nfs_down(struct nfsmount *, thread_t, int, int, const char *, int);
+int     nfs_msg(thread_t, const char *, const char *, int);
+
+int     nfs_mountroot(void);

 struct nfs_diskless;
 struct nfs_diskless;

-int    nfs_boot_init(struct nfs_diskless *);
-int    nfs_boot_getfh(struct nfs_diskless *, int, int);
+int     nfs_boot_init(struct nfs_diskless *);
+int     nfs_boot_getfh(struct nfs_diskless *, int, int);
+
+#if CONFIG_TRIGGERS
+resolver_result_t nfs_mirror_mount_trigger_resolve(vnode_t, const struct componentname *, enum path_operation, int, void *, vfs_context_t);
+resolver_result_t nfs_mirror_mount_trigger_unresolve(vnode_t, int, void *, vfs_context_t);
+resolver_result_t nfs_mirror_mount_trigger_rearm(vnode_t, int, void *, vfs_context_t);
+int     nfs_mirror_mount_domount(vnode_t, vnode_t, vfs_context_t);
+void    nfs_ephemeral_mount_harvester_start(void);
+void    nfs_ephemeral_mount_harvester(__unused void *arg, __unused wait_result_t wr);
+#endif
+
+/* socket upcall interfaces */
+void nfsrv_uc_init(void);
+void nfsrv_uc_cleanup(void);
+void nfsrv_uc_addsock(struct nfsrv_sock *, int);
+void nfsrv_uc_dequeue(struct nfsrv_sock *);
+
+/* Debug support */
+#define NFS_DEBUG_LEVEL   (nfs_debug_ctl & 0xf)
+#define NFS_DEBUG_FACILITY ((nfs_debug_ctl >> 4) & 0xfff)
+#define NFS_DEBUG_FLAGS ((nfs_debug_ctl >> 16) & 0xf)
+#define NFS_DEBUG_VALUE ((nfs_debug_ctl >> 20) & 0xfff)
+#define NFS_FAC_SOCK    0x001
+#define NFS_FAC_STATE   0x002
+#define NFS_FAC_NODE    0x004
+#define NFS_FAC_VNOP    0x008
+#define NFS_FAC_BIO     0x010
+#define NFS_FAC_GSS     0x020
+#define NFS_FAC_VFS     0x040
+#define NFS_FAC_SRV     0x080
+
+#define NFS_IS_DBG(fac, lev) \
+       (__builtin_expect((NFS_DEBUG_FACILITY & (fac)) && ((lev) <= NFS_DEBUG_LEVEL), 0))
+#define NFS_DBG(fac, lev, fmt, ...)  nfs_printf((fac), (lev), "%s: %d: " fmt, __func__, __LINE__, ## __VA_ARGS__)
+
+void nfs_printf(unsigned int, unsigned int, const char *, ...) __printflike(3, 4);
+void nfs_dump_mbuf(const char *, int, const char *, mbuf_t);
+int  nfs_mountopts(struct nfsmount *, char *, int);

 
 __END_DECLS
 
 
 __END_DECLS
 

-#endif /* KERNEL */
+#endif  /* KERNEL */

 #endif /* __APPLE_API_PRIVATE */
 
 #endif
 #endif /* __APPLE_API_PRIVATE */
 
 #endif