bsd/sys/socketvar.h

   1 /*
   2  * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
  29 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  30 /*-
  31  * Copyright (c) 1982, 1986, 1990, 1993
  32  *      The Regents of the University of California.  All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. All advertising materials mentioning features or use of this software
  43  *    must display the following acknowledgement:
  44  *      This product includes software developed by the University of
  45  *      California, Berkeley and its contributors.
  46  * 4. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)socketvar.h 8.3 (Berkeley) 2/19/95
  63  * $FreeBSD: src/sys/sys/socketvar.h,v 1.46.2.6 2001/08/31 13:45:49 jlemon Exp $
  64  */
  65 /*
  66  * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
  67  * support for mandatory and extensible security protections.  This notice
  68  * is included in support of clause 2.2 (b) of the Apple Public License,
  69  * Version 2.0.
  70  */
  71
  72 #ifndef _SYS_SOCKETVAR_H_
  73 #define _SYS_SOCKETVAR_H_
  74
  75 #include <sys/appleapiopts.h>
  76 #include <sys/queue.h>                  /* for TAILQ macros */
  77 #include <sys/select.h>                 /* for struct selinfo */
  78 #include <net/kext_net.h>
  79 #include <sys/ev.h>
  80 #include <sys/cdefs.h>
  81
  82 /*
  83  * Hacks to get around compiler complaints
  84  */
  85 struct mbuf;
  86 struct socket_filter_entry;
  87 struct protosw;
  88 struct sockif;
  89 struct sockutil;
  90
  91 #ifdef KERNEL_PRIVATE
  92 /* strings for sleep message: */
  93 extern  char netio[], netcon[], netcls[];
  94 #define SOCKET_CACHE_ON
  95 #define SO_CACHE_FLUSH_INTERVAL 1       /* Seconds */
  96 #define SO_CACHE_TIME_LIMIT     (120/SO_CACHE_FLUSH_INTERVAL) /* Seconds */
  97 #define SO_CACHE_MAX_FREE_BATCH 50
  98 #define MAX_CACHED_SOCKETS      60000
  99 #define TEMPDEBUG               0
 100
 101 /*
 102  * Kernel structure per socket.
 103  * Contains send and receive buffer queues,
 104  * handle on protocol and pointer to protocol
 105  * private data and error information.
 106  */
 107 #endif /* KERNEL_PRIVATE */
 108
 109 typedef u_quad_t so_gen_t;
 110
 111 #ifdef KERNEL_PRIVATE
 112 #ifndef __APPLE__
 113 /* We don't support BSD style socket filters */
 114 struct accept_filter;
 115 #endif
 116
 117 struct socket {
 118         int     so_zone;                /* zone we were allocated from */
 119         short   so_type;                /* generic type, see socket.h */
 120         short   so_options;             /* from socket call, see socket.h */
 121         short   so_linger;              /* time to linger while closing */
 122         short   so_state;               /* internal state flags SS_*, below */
 123         caddr_t so_pcb;                 /* protocol control block */
 124         struct  protosw *so_proto;      /* protocol handle */
 125         /*
 126          * Variables for connection queueing.
 127          * Socket where accepts occur is so_head in all subsidiary sockets.
 128          * If so_head is 0, socket is not related to an accept.
 129          * For head socket so_incomp queues partially completed connections,
 130          * while so_comp is a queue of connections ready to be accepted.
 131          * If a connection is aborted and it has so_head set, then
 132          * it has to be pulled out of either so_incomp or so_comp.
 133          * We allow connections to queue up based on current queue lengths
 134          * and limit on number of queued connections for this socket.
 135          */
 136         struct  socket *so_head;        /* back pointer to accept socket */
 137         TAILQ_HEAD(, socket) so_incomp; /* q of partially unaccepted conns */
 138         TAILQ_HEAD(, socket) so_comp;   /* q of complete unaccepted conns */
 139         TAILQ_ENTRY(socket) so_list;    /* list of unaccepted connections */
 140         short   so_qlen;                /* number of unaccepted connections */
 141         short   so_incqlen;             /* number of unaccepted incomplete
 142                                            connections */
 143         short   so_qlimit;              /* max number queued connections */
 144         short   so_timeo;               /* connection timeout */
 145         u_short so_error;               /* error affecting connection */
 146         pid_t   so_pgid;                /* pgid for signals */
 147         u_long  so_oobmark;             /* chars to oob mark */
 148 #ifndef __APPLE__
 149         /* We don't support AIO ops */
 150         TAILQ_HEAD(, aiocblist) so_aiojobq; /* AIO ops waiting on socket */
 151 #endif
 152         /*
 153          * Variables for socket buffering.
 154          */
 155         struct  sockbuf {
 156                 u_long  sb_cc;          /* actual chars in buffer */
 157                 u_long  sb_hiwat;       /* max actual char count */
 158                 u_long  sb_mbcnt;       /* chars of mbufs used */
 159                 u_long  sb_mbmax;       /* max chars of mbufs to use */
 160                 u_long  sb_ctl;         /* non-data chars in buffer */
 161                 u_long  sb_lowat;       /* low water mark */
 162                 struct  mbuf *sb_mb;    /* the mbuf chain */
 163                 struct  mbuf *sb_mbtail; /* the last mbuf in the chain */
 164                 struct  mbuf *sb_lastrecord; /* first mbuf of last record */
 165 #if __APPLE__
 166                 struct  socket *sb_so;  /* socket back ptr for kexts */
 167 #endif
 168                 struct  selinfo sb_sel; /* process selecting read/write */
 169                 short   sb_flags;       /* flags, see below */
 170                 struct timeval sb_timeo; /* timeout for read/write */
 171                 u_int   sb_maxused;     /* max char count ever used in sockbuf */
 172                 void    *reserved1[4];  /* for future use */
 173         } so_rcv, so_snd;
 174 #define SB_MAX          (8192*1024)     /* default for max chars in sockbuf */
 175 #define SB_LOCK         0x01            /* lock on data queue */
 176 #define SB_WANT         0x02            /* someone is waiting to lock */
 177 #define SB_WAIT         0x04            /* someone is waiting for data/space */
 178 #define SB_SEL          0x08            /* someone is selecting */
 179 #define SB_ASYNC        0x10            /* ASYNC I/O, need signals */
 180 #define SB_UPCALL       0x20            /* someone wants an upcall */
 181 #define SB_NOINTR       0x40            /* operations not interruptible */
 182 #define SB_KNOTE        0x100           /* kernel note attached */
 183 #define SB_USRSIZE      0x200           /* user specified sbreserve */
 184 #ifndef __APPLE__
 185 #define SB_AIO          0x80            /* AIO operations queued */
 186 #else
 187 #define SB_NOTIFY       (SB_WAIT|SB_SEL|SB_ASYNC)
 188 #define SB_DROP         0x400           /* does not accept any more data */
 189 #define SB_UNIX         0x800           /* UNIX domain socket buffer */
 190 #define SB_RECV         0x8000          /* this is rcv sb */
 191
 192         caddr_t so_tpcb;        /* Wisc. protocol control block - XXX unused? */
 193 #endif
 194
 195         void    (*so_upcall)(struct socket *so, caddr_t arg, int waitf);
 196         caddr_t so_upcallarg;           /* Arg for above */
 197         uid_t   so_uid;                 /* who opened the socket */
 198         /* NB: generation count must not be first; easiest to make it last. */
 199         so_gen_t so_gencnt;             /* generation count */
 200 #ifndef __APPLE__
 201         void    *so_emuldata;           /* private data for emulators */
 202         struct so_accf {
 203                 struct  accept_filter *so_accept_filter;
 204                 void    *so_accept_filter_arg;  /* saved filter args */
 205                 char    *so_accept_filter_str;  /* saved user args */
 206         } *so_accf;
 207 #else
 208         TAILQ_HEAD(, eventqelt) so_evlist;
 209         int     cached_in_sock_layer;   /* bundled with pcb/pcb.inp_ppcb? */
 210         struct  socket  *cache_next;
 211         struct  socket  *cache_prev;
 212         u_long          cache_timestamp;
 213         caddr_t         so_saved_pcb;   /* Saved pcb when cacheing */
 214         struct  mbuf *so_temp;          /* Holding area for outbound frags */
 215         /* Plug-in support - make the socket interface overridable */
 216         struct  mbuf *so_tail;
 217         struct socket_filter_entry *so_filt;    /* NKE hook */
 218         u_long  so_flags;       /* Flags */
 219 #define SOF_NOSIGPIPE   0x1
 220 #define SOF_NOADDRAVAIL 0x2     /* EADDRNOTAVAIL if src addr is gone */
 221 #define SOF_PCBCLEARING 0x4     /* pru_disconnect done; don't call pru_detach */
 222 #define SOF_DEFUNCT     0x8     /* accepted socket marked as inactive */
 223 #define SOF_CLOSEWAIT   0x10    /* blocked in close awaiting some events */
 224 #define SOF_UPCALLINUSE 0x20    /* socket upcall is currently in progress */
 225 #define SOF_REUSESHAREUID       0x40    /* Allows SO_REUSEADDR/SO_REUSEPORT for multiple so_uid */
 226 #define SOF_MULTIPAGES  0x80    /* jumbo clusters may be used for sosend */
 227 #define SOF_ABORTED     0x100   /* soabort was already called once on the socket */
 228 #define SOF_OVERFLOW 0x200      /* socket was dropped as overflow of listen queue */
 229 #ifdef __APPLE_API_PRIVATE
 230 #define SOF_NOTIFYCONFLICT 0x400        /* notify that a bind was done on a port already in use */
 231 #endif
 232 #define SOF_UPCALLCLOSEWAIT 0x800 /* block on close until an upcall returns  */
 233         int     so_usecount;    /* refcounting of socket use */;
 234         int     so_retaincnt;
 235         u_int32_t so_filteruse; /* usecount for the socket filters */
 236         u_int32_t       so_traffic_mgt_flags;   /* traffic_mgt socket config */
 237         thread_t        so_send_filt_thread;
 238         u_int32_t       so_restrictions;
 239
 240 /* for debug pruposes */
 241 #define SO_LCKDBG_MAX 4 /* number of debug locking Link Registers recorded */
 242         u_int32_t lock_lr[SO_LCKDBG_MAX];       /* locking calling history */
 243         int     next_lock_lr;
 244         u_int32_t unlock_lr[SO_LCKDBG_MAX];     /* unlocking caller history */
 245         int     next_unlock_lr;
 246         void *reserved; /* reserved for future use */
 247 #endif /* __APPLE__ */
 248
 249         struct  label *so_label;        /* MAC label for socket */
 250         struct  label *so_peerlabel;    /* cached MAC label for socket peer */
 251         thread_t        so_background_thread;   /* thread that marked this socket background */
 252 };
 253 #endif /* KERNEL_PRIVATE */
 254
 255 /*
 256  * Socket state bits.
 257  */
 258 #define SS_NOFDREF              0x0001  /* no file table ref any more */
 259 #define SS_ISCONNECTED          0x0002  /* socket connected to a peer */
 260 #define SS_ISCONNECTING         0x0004  /* in process of connecting to peer */
 261 #define SS_ISDISCONNECTING      0x0008  /* in process of disconnecting */
 262 #define SS_CANTSENDMORE         0x0010  /* can't send more data to peer */
 263 #define SS_CANTRCVMORE          0x0020  /* can't receive more data from peer */
 264 #define SS_RCVATMARK            0x0040  /* at mark on input */
 265
 266 #define SS_PRIV                 0x0080  /* privileged for broadcast, raw... */
 267 #define SS_NBIO                 0x0100  /* non-blocking ops */
 268 #define SS_ASYNC                0x0200  /* async i/o notify */
 269 #define SS_ISCONFIRMING         0x0400  /* deciding to accept connection req */
 270 #define SS_INCOMP               0x0800  /* Unaccepted, incomplete connection */
 271 #define SS_COMP                 0x1000  /* unaccepted, complete connection */
 272 #define SS_ISDISCONNECTED       0x2000  /* socket disconnected from peer */
 273 #define SS_DRAINING             0x4000  /* close waiting for blocked system
 274                                            calls to drain */
 275
 276 #if defined(__LP64__)
 277 #define _XSOCKET_PTR(x)         u_int32_t
 278 #else
 279 #define _XSOCKET_PTR(x)         x
 280 #endif
 281
 282 #pragma pack(4)
 283
 284 /*
 285  * Externalized form of struct socket used by the sysctl(3) interface.
 286  */
 287 struct  xsocket {
 288         u_int32_t       xso_len;                /* length of this structure */
 289         _XSOCKET_PTR(struct socket *) xso_so;   /* makes a convenient handle */
 290         short           so_type;
 291         short           so_options;
 292         short           so_linger;
 293         short           so_state;
 294         _XSOCKET_PTR(caddr_t)   so_pcb;         /* another convenient handle */
 295         int             xso_protocol;
 296         int             xso_family;
 297         short           so_qlen;
 298         short           so_incqlen;
 299         short           so_qlimit;
 300         short           so_timeo;
 301         u_short         so_error;
 302         pid_t           so_pgid;
 303         u_int32_t       so_oobmark;
 304         struct  xsockbuf {
 305                 u_int32_t       sb_cc;
 306                 u_int32_t       sb_hiwat;
 307                 u_int32_t       sb_mbcnt;
 308                 u_int32_t       sb_mbmax;
 309                 int32_t         sb_lowat;
 310                 short           sb_flags;
 311                 short           sb_timeo;
 312         } so_rcv, so_snd;
 313         uid_t           so_uid;         /* XXX */
 314 };
 315
 316 #pragma pack()
 317
 318 #ifdef KERNEL_PRIVATE
 319 /*
 320  * Macros for sockets and socket buffering.
 321  */
 322
 323 #define sbtoso(sb) (sb->sb_so)
 324
 325 /*
 326  * Functions for sockets and socket buffering.
 327  * These are macros on FreeBSD. On Darwin the
 328  * implementation is in bsd/kern/uipc_socket2.c
 329  */
 330
 331 __BEGIN_DECLS
 332 int     sb_notify(struct sockbuf *sb);
 333 long    sbspace(struct sockbuf *sb);
 334 int     sosendallatonce(struct socket *so);
 335 int     soreadable(struct socket *so);
 336 int     sowriteable(struct socket *so);
 337 void    sballoc(struct sockbuf *sb, struct mbuf *m);
 338 void    sbfree(struct sockbuf *sb, struct mbuf *m);
 339 int     sblock(struct sockbuf *sb, int wf);
 340 void    sbunlock(struct sockbuf *sb, int locked);
 341 void    sorwakeup(struct socket *so);
 342 void    sowwakeup(struct socket *so);
 343 __END_DECLS
 344
 345 /*
 346  * Socket extension mechanism: control block hooks:
 347  * This is the "head" of any control block for an extenstion
 348  * Note: we separate intercept function dispatch vectors from
 349  *  the NFDescriptor to permit selective replacement during
 350  *  operation, e.g., to disable some functions.
 351  */
 352 struct kextcb {
 353         struct kextcb *e_next;          /* Next kext control block */
 354         void *e_fcb;                    /* Real filter control block */
 355         struct NFDescriptor *e_nfd;     /* NKE Descriptor */
 356         /* Plug-in support - intercept functions */
 357         struct sockif *e_soif;          /* Socket functions */
 358         struct sockutil *e_sout;        /* Sockbuf utility functions */
 359 };
 360 #define EXT_NULL        0x0             /* STATE: Not in use */
 361 #define sotokextcb(so) (so ? so->so_ext : 0)
 362
 363 #ifdef KERNEL
 364
 365 #define SO_FILT_HINT_LOCKED 0x1
 366
 367 /*
 368  * Argument structure for sosetopt et seq.  This is in the KERNEL
 369  * section because it will never be visible to user code.
 370  */
 371 enum sopt_dir { SOPT_GET, SOPT_SET };
 372 struct sockopt {
 373         enum    sopt_dir sopt_dir; /* is this a get or a set? */
 374         int     sopt_level;     /* second arg of [gs]etsockopt */
 375         int     sopt_name;      /* third arg of [gs]etsockopt */
 376         user_addr_t sopt_val;   /* fourth arg of [gs]etsockopt */
 377         size_t  sopt_valsize;   /* (almost) fifth arg of [gs]etsockopt */
 378         struct  proc *sopt_p;   /* calling process or null if kernel */
 379 };
 380
 381 #if SENDFILE
 382 struct sf_buf {
 383         SLIST_ENTRY(sf_buf) free_list;  /* list of free buffer slots */
 384         int             refcnt;         /* reference count */
 385         struct          vm_page *m;     /* currently mapped page */
 386         vm_offset_t     kva;            /* va of mapping */
 387 };
 388 #endif
 389
 390 #ifdef MALLOC_DECLARE
 391 MALLOC_DECLARE(M_PCB);
 392 MALLOC_DECLARE(M_SONAME);
 393 #endif
 394
 395 extern int      maxsockets;
 396 extern u_long   sb_max;
 397 extern int socket_zone;
 398 extern so_gen_t so_gencnt;
 399 extern int      socket_debug;
 400 extern int sosendjcl;
 401 extern int sosendjcl_ignore_capab;
 402 extern int somaxconn;
 403
 404 struct file;
 405 struct filedesc;
 406 struct mbuf;
 407 struct sockaddr;
 408 struct stat;
 409 struct ucred;
 410 struct uio;
 411 struct knote;
 412
 413 #define SBLASTRECORDCHK(sb, s)  \
 414         if (socket_debug) sblastrecordchk(sb, s);
 415
 416 #define SBLASTMBUFCHK(sb, s)    \
 417         if (socket_debug) sblastmbufchk(sb, s);
 418
 419 #define SB_EMPTY_FIXUP(sb) {                    \
 420         if ((sb)->sb_mb == NULL) {              \
 421                 (sb)->sb_mbtail = NULL;         \
 422                 (sb)->sb_lastrecord = NULL;     \
 423         }                                       \
 424 }
 425
 426 /*
 427  * From uipc_socket and friends
 428  */
 429 __BEGIN_DECLS
 430 /* Not exported */
 431 extern void socketinit(void) __attribute__((section("__TEXT, initcode")));
 432
 433 /* Exported */
 434 extern struct sockaddr *dup_sockaddr(struct sockaddr *sa, int canwait);
 435 extern int getsock(struct filedesc *fdp, int fd, struct file **fpp);
 436 extern int sockargs(struct mbuf **mp, user_addr_t data, int buflen, int type);
 437
 438 extern int sbappend(struct sockbuf *sb, struct mbuf *m);
 439 extern int sbappendstream(struct sockbuf *sb, struct mbuf *m);
 440 extern int sbappendaddr(struct sockbuf *sb, struct sockaddr *asa,
 441     struct mbuf *m0, struct mbuf *control, int *error_out);
 442 extern int sbappendcontrol(struct sockbuf *sb, struct mbuf *m0,
 443     struct mbuf *control, int *error_out);
 444 extern int sbappendrecord(struct sockbuf *sb, struct mbuf *m0);
 445 extern void sbcheck(struct sockbuf *sb);
 446 extern void sblastmbufchk(struct sockbuf *, const char *);
 447 extern void sblastrecordchk(struct sockbuf *, const char *);
 448 extern struct mbuf *sbcreatecontrol(caddr_t p, int size, int type, int level);
 449 extern void sbdrop(struct sockbuf *sb, int len);
 450 extern void sbdroprecord(struct sockbuf *sb);
 451 extern void sbflush(struct sockbuf *sb);
 452 extern int sbinsertoob(struct sockbuf *sb, struct mbuf *m0);
 453 extern void sbrelease(struct sockbuf *sb);
 454 extern int sbreserve(struct sockbuf *sb, u_long cc);
 455 extern void sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb);
 456 extern int sbwait(struct sockbuf *sb);
 457 extern int sb_lock(struct sockbuf *sb);
 458 extern void sb_empty_assert(struct sockbuf *, const char *);
 459
 460 extern int soabort(struct socket *so);
 461 extern int soaccept(struct socket *so, struct sockaddr **nam);
 462 extern int soacceptlock(struct socket *so, struct sockaddr **nam, int dolock);
 463 extern int soacceptfilter(struct socket *so);
 464 extern struct socket *soalloc(int waitok, int dom, int type);
 465 extern int sobind(struct socket *so, struct sockaddr *nam);
 466 extern void socantrcvmore(struct socket *so);
 467 extern void socantsendmore(struct socket *so);
 468 extern int soclose(struct socket *so);
 469 extern int soconnect(struct socket *so, struct sockaddr *nam);
 470 extern int soconnectlock(struct socket *so, struct sockaddr *nam, int dolock);
 471 extern int soconnect2(struct socket *so1, struct socket *so2);
 472 extern int socreate(int dom, struct socket **aso, int type, int proto);
 473 extern void sodealloc(struct socket *so);
 474 extern int sodisconnect(struct socket *so);
 475 extern int sodisconnectlocked(struct socket *so);
 476 extern void sofree(struct socket *so);
 477 extern void soreference(struct socket *so);
 478 extern void sodereference(struct socket *so);
 479 extern void somultipages(struct socket *, boolean_t);
 480 extern int sogetopt(struct socket *so, struct sockopt *sopt);
 481 extern void sohasoutofband(struct socket *so);
 482 extern void soisconnected(struct socket *so);
 483 extern void soisconnecting(struct socket *so);
 484 extern void soisdisconnected(struct socket *so);
 485 extern void soisdisconnecting(struct socket *so);
 486 extern int solisten(struct socket *so, int backlog);
 487 extern struct socket *sodropablereq(struct socket *head);
 488 extern struct socket *sonewconn(struct socket *head, int connstatus,
 489     const struct sockaddr *from);
 490 extern int sooptcopyin(struct sockopt *sopt, void *data, size_t len,
 491     size_t minlen);
 492 extern int sooptcopyout(struct sockopt *sopt, void *data, size_t len);
 493 extern int socket_lock(struct socket *so, int refcount);
 494 extern int socket_unlock(struct socket *so, int refcount);
 495 extern void sofreelastref(struct socket *, int);
 496
 497 /*
 498  * XXX; prepare mbuf for (__FreeBSD__ < 3) routines.
 499  * Used primarily in IPSec and IPv6 code.
 500  */
 501 extern int soopt_getm(struct sockopt *sopt, struct mbuf **mp);
 502 extern int soopt_mcopyin(struct sockopt *sopt, struct mbuf *m);
 503 extern int soopt_mcopyout(struct sockopt *sopt, struct mbuf *m);
 504
 505 extern int sopoll(struct socket *so, int events, struct ucred *cred, void *wql);
 506 extern int soreceive(struct socket *so, struct sockaddr **paddr,
 507     struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, int *flagsp);
 508 extern int soreserve(struct socket *so, u_long sndcc, u_long rcvcc);
 509 extern void sorflush(struct socket *so);
 510 extern int sosend(struct socket *so, struct sockaddr *addr, struct uio *uio,
 511     struct mbuf *top, struct mbuf *control, int flags);
 512
 513 extern int sosetopt(struct socket *so, struct sockopt *sopt);
 514 extern int soshutdown(struct socket *so, int how);
 515 extern int soshutdownlock(struct socket *so, int how);
 516 extern void sotoxsocket(struct socket *so, struct xsocket *xso);
 517 extern void sowakeup(struct socket *so, struct sockbuf *sb);
 518 extern int soioctl(struct socket *so, u_long cmd, caddr_t data, struct proc *p);
 519
 520 #ifndef __APPLE__
 521 /* accept filter functions */
 522 extern int accept_filt_add(struct accept_filter *filt);
 523 extern int accept_filt_del(char *name);
 524 extern struct accept_filter *accept_filt_get(char *name);
 525 #ifdef ACCEPT_FILTER_MOD
 526 extern int accept_filt_generic_mod_event(module_t mod, int event, void *data);
 527 SYSCTL_DECL(_net_inet_accf);
 528 #endif /* ACCEPT_FILTER_MOD */
 529 #endif /* !defined(__APPLE__) */
 530
 531 __END_DECLS
 532
 533 #endif /* KERNEL */
 534 #endif /* KERNEL_PRIVATE */
 535
 536 #endif /* !_SYS_SOCKETVAR_H_ */