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


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

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

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 4. Neither the name of the University nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      @(#)socket.h    8.4 (Berkeley) 2/21/94
   30  * $FreeBSD: releng/11.0/sys/sys/socket.h 301038 2016-05-31 13:32:33Z ed $
   31  */
   32 
   33 #ifndef _SYS_SOCKET_H_
   34 #define _SYS_SOCKET_H_
   35 
   36 #include <sys/cdefs.h>
   37 #include <sys/_types.h>
   38 #include <sys/_iovec.h>
   39 #include <machine/_align.h>
   40 
   41 /*
   42  * Definitions related to sockets: types, address families, options.
   43  */
   44 
   45 /*
   46  * Data types.
   47  */
   48 #if __BSD_VISIBLE
   49 #ifndef _GID_T_DECLARED
   50 typedef __gid_t         gid_t;
   51 #define _GID_T_DECLARED
   52 #endif
   53 
   54 #ifndef _OFF_T_DECLARED
   55 typedef __off_t         off_t;
   56 #define _OFF_T_DECLARED
   57 #endif
   58 
   59 #ifndef _PID_T_DECLARED
   60 typedef __pid_t         pid_t;
   61 #define _PID_T_DECLARED
   62 #endif
   63 #endif
   64 
   65 #ifndef _SA_FAMILY_T_DECLARED
   66 typedef __sa_family_t   sa_family_t;
   67 #define _SA_FAMILY_T_DECLARED
   68 #endif
   69 
   70 #ifndef _SOCKLEN_T_DECLARED
   71 typedef __socklen_t     socklen_t;
   72 #define _SOCKLEN_T_DECLARED
   73 #endif
   74  
   75 #ifndef _SSIZE_T_DECLARED
   76 typedef __ssize_t       ssize_t;
   77 #define _SSIZE_T_DECLARED
   78 #endif
   79 
   80 #if __BSD_VISIBLE 
   81 #ifndef _UID_T_DECLARED
   82 typedef __uid_t         uid_t;
   83 #define _UID_T_DECLARED
   84 #endif
   85 #endif
   86 
   87 #ifndef _UINT32_T_DECLARED
   88 typedef __uint32_t      uint32_t;
   89 #define _UINT32_T_DECLARED
   90 #endif
   91 
   92 #ifndef _UINTPTR_T_DECLARED
   93 typedef __uintptr_t     uintptr_t;
   94 #define _UINTPTR_T_DECLARED
   95 #endif
   96 
   97 /*
   98  * Types
   99  */
  100 #define SOCK_STREAM     1               /* stream socket */
  101 #define SOCK_DGRAM      2               /* datagram socket */
  102 #define SOCK_RAW        3               /* raw-protocol interface */
  103 #if __BSD_VISIBLE
  104 #define SOCK_RDM        4               /* reliably-delivered message */
  105 #endif
  106 #define SOCK_SEQPACKET  5               /* sequenced packet stream */
  107 
  108 #if __BSD_VISIBLE
  109 /*
  110  * Creation flags, OR'ed into socket() and socketpair() type argument.
  111  */
  112 #define SOCK_CLOEXEC    0x10000000
  113 #define SOCK_NONBLOCK   0x20000000
  114 #endif
  115 
  116 /*
  117  * Option flags per-socket.
  118  */
  119 #define SO_DEBUG        0x0001          /* turn on debugging info recording */
  120 #define SO_ACCEPTCONN   0x0002          /* socket has had listen() */
  121 #define SO_REUSEADDR    0x0004          /* allow local address reuse */
  122 #define SO_KEEPALIVE    0x0008          /* keep connections alive */
  123 #define SO_DONTROUTE    0x0010          /* just use interface addresses */
  124 #define SO_BROADCAST    0x0020          /* permit sending of broadcast msgs */
  125 #if __BSD_VISIBLE
  126 #define SO_USELOOPBACK  0x0040          /* bypass hardware when possible */
  127 #endif
  128 #define SO_LINGER       0x0080          /* linger on close if data present */
  129 #define SO_OOBINLINE    0x0100          /* leave received OOB data in line */
  130 #if __BSD_VISIBLE
  131 #define SO_REUSEPORT    0x0200          /* allow local address & port reuse */
  132 #define SO_TIMESTAMP    0x0400          /* timestamp received dgram traffic */
  133 #define SO_NOSIGPIPE    0x0800          /* no SIGPIPE from EPIPE */
  134 #define SO_ACCEPTFILTER 0x1000          /* there is an accept filter */
  135 #define SO_BINTIME      0x2000          /* timestamp received dgram traffic */
  136 #endif
  137 #define SO_NO_OFFLOAD   0x4000          /* socket cannot be offloaded */
  138 #define SO_NO_DDP       0x8000          /* disable direct data placement */
  139 
  140 /*
  141  * Additional options, not kept in so_options.
  142  */
  143 #define SO_SNDBUF       0x1001          /* send buffer size */
  144 #define SO_RCVBUF       0x1002          /* receive buffer size */
  145 #define SO_SNDLOWAT     0x1003          /* send low-water mark */
  146 #define SO_RCVLOWAT     0x1004          /* receive low-water mark */
  147 #define SO_SNDTIMEO     0x1005          /* send timeout */
  148 #define SO_RCVTIMEO     0x1006          /* receive timeout */
  149 #define SO_ERROR        0x1007          /* get error status and clear */
  150 #define SO_TYPE         0x1008          /* get socket type */
  151 #if __BSD_VISIBLE
  152 #define SO_LABEL        0x1009          /* socket's MAC label */
  153 #define SO_PEERLABEL    0x1010          /* socket's peer's MAC label */
  154 #define SO_LISTENQLIMIT 0x1011          /* socket's backlog limit */
  155 #define SO_LISTENQLEN   0x1012          /* socket's complete queue length */
  156 #define SO_LISTENINCQLEN        0x1013  /* socket's incomplete queue length */
  157 #define SO_SETFIB       0x1014          /* use this FIB to route */
  158 #define SO_USER_COOKIE  0x1015          /* user cookie (dummynet etc.) */
  159 #define SO_PROTOCOL     0x1016          /* get socket protocol (Linux name) */
  160 #define SO_PROTOTYPE    SO_PROTOCOL     /* alias for SO_PROTOCOL (SunOS name) */
  161 #endif
  162 
  163 /*
  164  * Space reserved for new socket options added by third-party vendors.
  165  * This range applies to all socket option levels.  New socket options
  166  * in FreeBSD should always use an option value less than SO_VENDOR.
  167  */
  168 #if __BSD_VISIBLE
  169 #define SO_VENDOR       0x80000000
  170 #endif
  171 
  172 /*
  173  * Structure used for manipulating linger option.
  174  */
  175 struct linger {
  176         int     l_onoff;                /* option on/off */
  177         int     l_linger;               /* linger time */
  178 };
  179 
  180 #if __BSD_VISIBLE
  181 struct accept_filter_arg {
  182         char    af_name[16];
  183         char    af_arg[256-16];
  184 };
  185 #endif
  186 
  187 /*
  188  * Level number for (get/set)sockopt() to apply to socket itself.
  189  */
  190 #define SOL_SOCKET      0xffff          /* options for socket level */
  191 
  192 /*
  193  * Address families.
  194  */
  195 #define AF_UNSPEC       0               /* unspecified */
  196 #if __BSD_VISIBLE
  197 #define AF_LOCAL        AF_UNIX         /* local to host (pipes, portals) */
  198 #endif
  199 #define AF_UNIX         1               /* standardized name for AF_LOCAL */
  200 #define AF_INET         2               /* internetwork: UDP, TCP, etc. */
  201 #if __BSD_VISIBLE
  202 #define AF_IMPLINK      3               /* arpanet imp addresses */
  203 #define AF_PUP          4               /* pup protocols: e.g. BSP */
  204 #define AF_CHAOS        5               /* mit CHAOS protocols */
  205 #define AF_NETBIOS      6               /* SMB protocols */
  206 #define AF_ISO          7               /* ISO protocols */
  207 #define AF_OSI          AF_ISO
  208 #define AF_ECMA         8               /* European computer manufacturers */
  209 #define AF_DATAKIT      9               /* datakit protocols */
  210 #define AF_CCITT        10              /* CCITT protocols, X.25 etc */
  211 #define AF_SNA          11              /* IBM SNA */
  212 #define AF_DECnet       12              /* DECnet */
  213 #define AF_DLI          13              /* DEC Direct data link interface */
  214 #define AF_LAT          14              /* LAT */
  215 #define AF_HYLINK       15              /* NSC Hyperchannel */
  216 #define AF_APPLETALK    16              /* Apple Talk */
  217 #define AF_ROUTE        17              /* Internal Routing Protocol */
  218 #define AF_LINK         18              /* Link layer interface */
  219 #define pseudo_AF_XTP   19              /* eXpress Transfer Protocol (no AF) */
  220 #define AF_COIP         20              /* connection-oriented IP, aka ST II */
  221 #define AF_CNT          21              /* Computer Network Technology */
  222 #define pseudo_AF_RTIP  22              /* Help Identify RTIP packets */
  223 #define AF_IPX          23              /* Novell Internet Protocol */
  224 #define AF_SIP          24              /* Simple Internet Protocol */
  225 #define pseudo_AF_PIP   25              /* Help Identify PIP packets */
  226 #define AF_ISDN         26              /* Integrated Services Digital Network*/
  227 #define AF_E164         AF_ISDN         /* CCITT E.164 recommendation */
  228 #define pseudo_AF_KEY   27              /* Internal key-management function */
  229 #endif
  230 #define AF_INET6        28              /* IPv6 */
  231 #if __BSD_VISIBLE
  232 #define AF_NATM         29              /* native ATM access */
  233 #define AF_ATM          30              /* ATM */
  234 #define pseudo_AF_HDRCMPLT 31           /* Used by BPF to not rewrite headers
  235                                          * in interface output routine
  236                                          */
  237 #define AF_NETGRAPH     32              /* Netgraph sockets */
  238 #define AF_SLOW         33              /* 802.3ad slow protocol */
  239 #define AF_SCLUSTER     34              /* Sitara cluster protocol */
  240 #define AF_ARP          35
  241 #define AF_BLUETOOTH    36              /* Bluetooth sockets */
  242 #define AF_IEEE80211    37              /* IEEE 802.11 protocol */
  243 #define AF_INET_SDP     40              /* OFED Socket Direct Protocol ipv4 */
  244 #define AF_INET6_SDP    42              /* OFED Socket Direct Protocol ipv6 */
  245 #define AF_MAX          42
  246 /*
  247  * When allocating a new AF_ constant, please only allocate
  248  * even numbered constants for FreeBSD until 134 as odd numbered AF_
  249  * constants 39-133 are now reserved for vendors.
  250  */
  251 #define AF_VENDOR00 39
  252 #define AF_VENDOR01 41
  253 #define AF_VENDOR02 43
  254 #define AF_VENDOR03 45
  255 #define AF_VENDOR04 47
  256 #define AF_VENDOR05 49
  257 #define AF_VENDOR06 51
  258 #define AF_VENDOR07 53
  259 #define AF_VENDOR08 55
  260 #define AF_VENDOR09 57
  261 #define AF_VENDOR10 59
  262 #define AF_VENDOR11 61
  263 #define AF_VENDOR12 63
  264 #define AF_VENDOR13 65
  265 #define AF_VENDOR14 67
  266 #define AF_VENDOR15 69
  267 #define AF_VENDOR16 71
  268 #define AF_VENDOR17 73
  269 #define AF_VENDOR18 75
  270 #define AF_VENDOR19 77
  271 #define AF_VENDOR20 79
  272 #define AF_VENDOR21 81
  273 #define AF_VENDOR22 83
  274 #define AF_VENDOR23 85
  275 #define AF_VENDOR24 87
  276 #define AF_VENDOR25 89
  277 #define AF_VENDOR26 91
  278 #define AF_VENDOR27 93
  279 #define AF_VENDOR28 95
  280 #define AF_VENDOR29 97
  281 #define AF_VENDOR30 99
  282 #define AF_VENDOR31 101
  283 #define AF_VENDOR32 103
  284 #define AF_VENDOR33 105
  285 #define AF_VENDOR34 107
  286 #define AF_VENDOR35 109
  287 #define AF_VENDOR36 111
  288 #define AF_VENDOR37 113
  289 #define AF_VENDOR38 115
  290 #define AF_VENDOR39 117
  291 #define AF_VENDOR40 119
  292 #define AF_VENDOR41 121
  293 #define AF_VENDOR42 123
  294 #define AF_VENDOR43 125
  295 #define AF_VENDOR44 127
  296 #define AF_VENDOR45 129
  297 #define AF_VENDOR46 131
  298 #define AF_VENDOR47 133
  299 #endif
  300 
  301 /*
  302  * Structure used by kernel to store most
  303  * addresses.
  304  */
  305 struct sockaddr {
  306         unsigned char   sa_len;         /* total length */
  307         sa_family_t     sa_family;      /* address family */
  308         char            sa_data[14];    /* actually longer; address value */
  309 };
  310 #if __BSD_VISIBLE
  311 #define SOCK_MAXADDRLEN 255             /* longest possible addresses */
  312 
  313 /*
  314  * Structure used by kernel to pass protocol
  315  * information in raw sockets.
  316  */
  317 struct sockproto {
  318         unsigned short  sp_family;              /* address family */
  319         unsigned short  sp_protocol;            /* protocol */
  320 };
  321 #endif
  322 
  323 #include <sys/_sockaddr_storage.h>
  324 
  325 #if __BSD_VISIBLE
  326 /*
  327  * Protocol families, same as address families for now.
  328  */
  329 #define PF_UNSPEC       AF_UNSPEC
  330 #define PF_LOCAL        AF_LOCAL
  331 #define PF_UNIX         PF_LOCAL        /* backward compatibility */
  332 #define PF_INET         AF_INET
  333 #define PF_IMPLINK      AF_IMPLINK
  334 #define PF_PUP          AF_PUP
  335 #define PF_CHAOS        AF_CHAOS
  336 #define PF_NETBIOS      AF_NETBIOS
  337 #define PF_ISO          AF_ISO
  338 #define PF_OSI          AF_ISO
  339 #define PF_ECMA         AF_ECMA
  340 #define PF_DATAKIT      AF_DATAKIT
  341 #define PF_CCITT        AF_CCITT
  342 #define PF_SNA          AF_SNA
  343 #define PF_DECnet       AF_DECnet
  344 #define PF_DLI          AF_DLI
  345 #define PF_LAT          AF_LAT
  346 #define PF_HYLINK       AF_HYLINK
  347 #define PF_APPLETALK    AF_APPLETALK
  348 #define PF_ROUTE        AF_ROUTE
  349 #define PF_LINK         AF_LINK
  350 #define PF_XTP          pseudo_AF_XTP   /* really just proto family, no AF */
  351 #define PF_COIP         AF_COIP
  352 #define PF_CNT          AF_CNT
  353 #define PF_SIP          AF_SIP
  354 #define PF_IPX          AF_IPX
  355 #define PF_RTIP         pseudo_AF_RTIP  /* same format as AF_INET */
  356 #define PF_PIP          pseudo_AF_PIP
  357 #define PF_ISDN         AF_ISDN
  358 #define PF_KEY          pseudo_AF_KEY
  359 #define PF_INET6        AF_INET6
  360 #define PF_NATM         AF_NATM
  361 #define PF_ATM          AF_ATM
  362 #define PF_NETGRAPH     AF_NETGRAPH
  363 #define PF_SLOW         AF_SLOW
  364 #define PF_SCLUSTER     AF_SCLUSTER
  365 #define PF_ARP          AF_ARP
  366 #define PF_BLUETOOTH    AF_BLUETOOTH
  367 #define PF_IEEE80211    AF_IEEE80211
  368 #define PF_INET_SDP     AF_INET_SDP
  369 #define PF_INET6_SDP    AF_INET6_SDP
  370 
  371 #define PF_MAX          AF_MAX
  372 
  373 /*
  374  * Definitions for network related sysctl, CTL_NET.
  375  *
  376  * Second level is protocol family.
  377  * Third level is protocol number.
  378  *
  379  * Further levels are defined by the individual families.
  380  */
  381 
  382 /*
  383  * PF_ROUTE - Routing table
  384  *
  385  * Three additional levels are defined:
  386  *      Fourth: address family, 0 is wildcard
  387  *      Fifth: type of info, defined below
  388  *      Sixth: flag(s) to mask with for NET_RT_FLAGS
  389  */
  390 #define NET_RT_DUMP     1               /* dump; may limit to a.f. */
  391 #define NET_RT_FLAGS    2               /* by flags, e.g. RESOLVING */
  392 #define NET_RT_IFLIST   3               /* survey interface list */
  393 #define NET_RT_IFMALIST 4               /* return multicast address list */
  394 #define NET_RT_IFLISTL  5               /* Survey interface list, using 'l'en
  395                                          * versions of msghdr structs. */
  396 #endif /* __BSD_VISIBLE */
  397 
  398 /*
  399  * Maximum queue length specifiable by listen.
  400  */
  401 #define SOMAXCONN       128
  402 
  403 /*
  404  * Message header for recvmsg and sendmsg calls.
  405  * Used value-result for recvmsg, value only for sendmsg.
  406  */
  407 struct msghdr {
  408         void            *msg_name;              /* optional address */
  409         socklen_t        msg_namelen;           /* size of address */
  410         struct iovec    *msg_iov;               /* scatter/gather array */
  411         int              msg_iovlen;            /* # elements in msg_iov */
  412         void            *msg_control;           /* ancillary data, see below */
  413         socklen_t        msg_controllen;        /* ancillary data buffer len */
  414         int              msg_flags;             /* flags on received message */
  415 };
  416 
  417 #define MSG_OOB         0x1             /* process out-of-band data */
  418 #define MSG_PEEK        0x2             /* peek at incoming message */
  419 #define MSG_DONTROUTE   0x4             /* send without using routing tables */
  420 #define MSG_EOR         0x8             /* data completes record */
  421 #define MSG_TRUNC       0x10            /* data discarded before delivery */
  422 #define MSG_CTRUNC      0x20            /* control data lost before delivery */
  423 #define MSG_WAITALL     0x40            /* wait for full request or error */
  424 #if __POSIX_VISIBLE >= 200809
  425 #define MSG_NOSIGNAL    0x20000         /* do not generate SIGPIPE on EOF */
  426 #endif
  427 #if __BSD_VISIBLE
  428 #define MSG_DONTWAIT    0x80            /* this message should be nonblocking */
  429 #define MSG_EOF         0x100           /* data completes connection */
  430 #define MSG_NOTIFICATION 0x2000         /* SCTP notification */
  431 #define MSG_NBIO        0x4000          /* FIONBIO mode, used by fifofs */
  432 #define MSG_COMPAT      0x8000          /* used in sendit() */
  433 #define MSG_CMSG_CLOEXEC 0x40000        /* make received fds close-on-exec */
  434 #define MSG_WAITFORONE  0x80000         /* for recvmmsg() */
  435 #endif
  436 #ifdef _KERNEL
  437 #define MSG_SOCALLBCK   0x10000         /* for use by socket callbacks - soreceive (TCP) */
  438 #endif
  439 
  440 /*
  441  * Header for ancillary data objects in msg_control buffer.
  442  * Used for additional information with/about a datagram
  443  * not expressible by flags.  The format is a sequence
  444  * of message elements headed by cmsghdr structures.
  445  */
  446 struct cmsghdr {
  447         socklen_t       cmsg_len;               /* data byte count, including hdr */
  448         int             cmsg_level;             /* originating protocol */
  449         int             cmsg_type;              /* protocol-specific type */
  450 /* followed by  u_char  cmsg_data[]; */
  451 };
  452 
  453 #if __BSD_VISIBLE
  454 /*
  455  * While we may have more groups than this, the cmsgcred struct must
  456  * be able to fit in an mbuf and we have historically supported a
  457  * maximum of 16 groups.
  458 */
  459 #define CMGROUP_MAX 16
  460 
  461 /*
  462  * Credentials structure, used to verify the identity of a peer
  463  * process that has sent us a message. This is allocated by the
  464  * peer process but filled in by the kernel. This prevents the
  465  * peer from lying about its identity. (Note that cmcred_groups[0]
  466  * is the effective GID.)
  467  */
  468 struct cmsgcred {
  469         pid_t   cmcred_pid;             /* PID of sending process */
  470         uid_t   cmcred_uid;             /* real UID of sending process */
  471         uid_t   cmcred_euid;            /* effective UID of sending process */
  472         gid_t   cmcred_gid;             /* real GID of sending process */
  473         short   cmcred_ngroups;         /* number or groups */
  474         gid_t   cmcred_groups[CMGROUP_MAX];     /* groups */
  475 };
  476 
  477 /*
  478  * Socket credentials.
  479  */
  480 struct sockcred {
  481         uid_t   sc_uid;                 /* real user id */
  482         uid_t   sc_euid;                /* effective user id */
  483         gid_t   sc_gid;                 /* real group id */
  484         gid_t   sc_egid;                /* effective group id */
  485         int     sc_ngroups;             /* number of supplemental groups */
  486         gid_t   sc_groups[1];           /* variable length */
  487 };
  488 
  489 /*
  490  * Compute size of a sockcred structure with groups.
  491  */
  492 #define SOCKCREDSIZE(ngrps) \
  493         (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))
  494 
  495 #endif /* __BSD_VISIBLE */
  496 
  497 /* given pointer to struct cmsghdr, return pointer to data */
  498 #define CMSG_DATA(cmsg)         ((unsigned char *)(cmsg) + \
  499                                  _ALIGN(sizeof(struct cmsghdr)))
  500 
  501 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
  502 #define CMSG_NXTHDR(mhdr, cmsg) \
  503         ((char *)(cmsg) == (char *)0 ? CMSG_FIRSTHDR(mhdr) : \
  504             ((char *)(cmsg) + _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len) + \
  505           _ALIGN(sizeof(struct cmsghdr)) > \
  506             (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \
  507             (struct cmsghdr *)0 : \
  508             (struct cmsghdr *)(void *)((char *)(cmsg) + \
  509             _ALIGN(((struct cmsghdr *)(cmsg))->cmsg_len)))
  510 
  511 /*
  512  * RFC 2292 requires to check msg_controllen, in case that the kernel returns
  513  * an empty list for some reasons.
  514  */
  515 #define CMSG_FIRSTHDR(mhdr) \
  516         ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
  517          (struct cmsghdr *)(mhdr)->msg_control : \
  518          (struct cmsghdr *)0)
  519 
  520 #if __BSD_VISIBLE
  521 /* RFC 2292 additions */
  522 #define CMSG_SPACE(l)           (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l))
  523 #define CMSG_LEN(l)             (_ALIGN(sizeof(struct cmsghdr)) + (l))
  524 #endif
  525 
  526 #ifdef _KERNEL
  527 #define CMSG_ALIGN(n)   _ALIGN(n)
  528 #endif
  529 
  530 /* "Socket"-level control message types: */
  531 #define SCM_RIGHTS      0x01            /* access rights (array of int) */
  532 #if __BSD_VISIBLE
  533 #define SCM_TIMESTAMP   0x02            /* timestamp (struct timeval) */
  534 #define SCM_CREDS       0x03            /* process creds (struct cmsgcred) */
  535 #define SCM_BINTIME     0x04            /* timestamp (struct bintime) */
  536 #endif
  537 
  538 #if __BSD_VISIBLE
  539 /*
  540  * 4.3 compat sockaddr, move to compat file later
  541  */
  542 struct osockaddr {
  543         unsigned short sa_family;       /* address family */
  544         char    sa_data[14];            /* up to 14 bytes of direct address */
  545 };
  546 
  547 /*
  548  * 4.3-compat message header (move to compat file later).
  549  */
  550 struct omsghdr {
  551         char    *msg_name;              /* optional address */
  552         int     msg_namelen;            /* size of address */
  553         struct  iovec *msg_iov;         /* scatter/gather array */
  554         int     msg_iovlen;             /* # elements in msg_iov */
  555         char    *msg_accrights;         /* access rights sent/received */
  556         int     msg_accrightslen;
  557 };
  558 #endif
  559 
  560 /*
  561  * howto arguments for shutdown(2), specified by Posix.1g.
  562  */
  563 #define SHUT_RD         0               /* shut down the reading side */
  564 #define SHUT_WR         1               /* shut down the writing side */
  565 #define SHUT_RDWR       2               /* shut down both sides */
  566 
  567 #if __BSD_VISIBLE
  568 /* for SCTP */
  569 /* we cheat and use the SHUT_XX defines for these */
  570 #define PRU_FLUSH_RD     SHUT_RD
  571 #define PRU_FLUSH_WR     SHUT_WR
  572 #define PRU_FLUSH_RDWR   SHUT_RDWR
  573 #endif
  574 
  575 
  576 #if __BSD_VISIBLE
  577 /*
  578  * sendfile(2) header/trailer struct
  579  */
  580 struct sf_hdtr {
  581         struct iovec *headers;  /* pointer to an array of header struct iovec's */
  582         int hdr_cnt;            /* number of header iovec's */
  583         struct iovec *trailers; /* pointer to an array of trailer struct iovec's */
  584         int trl_cnt;            /* number of trailer iovec's */
  585 };
  586 
  587 /*
  588  * Sendfile-specific flag(s)
  589  */
  590 #define SF_NODISKIO     0x00000001
  591 #define SF_MNOWAIT      0x00000002      /* obsolete */
  592 #define SF_SYNC         0x00000004
  593 #define SF_NOCACHE      0x00000010
  594 #define SF_FLAGS(rh, flags)     (((rh) << 16) | (flags))
  595 
  596 #ifdef _KERNEL
  597 #define SF_READAHEAD(flags)     ((flags) >> 16)
  598 #endif /* _KERNEL */
  599 
  600 /*
  601  * Sendmmsg/recvmmsg specific structure(s)
  602  */
  603 struct mmsghdr {
  604         struct msghdr   msg_hdr;                /* message header */
  605         ssize_t         msg_len;                /* message length */
  606 };
  607 #endif /* __BSD_VISIBLE */
  608 
  609 #ifndef _KERNEL
  610 
  611 #include <sys/cdefs.h>
  612 
  613 __BEGIN_DECLS
  614 int     accept(int, struct sockaddr * __restrict, socklen_t * __restrict);
  615 int     bind(int, const struct sockaddr *, socklen_t);
  616 int     connect(int, const struct sockaddr *, socklen_t);
  617 #if __BSD_VISIBLE
  618 int     accept4(int, struct sockaddr * __restrict, socklen_t * __restrict, int);
  619 int     bindat(int, int, const struct sockaddr *, socklen_t);
  620 int     connectat(int, int, const struct sockaddr *, socklen_t);
  621 #endif
  622 int     getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict);
  623 int     getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict);
  624 int     getsockopt(int, int, int, void * __restrict, socklen_t * __restrict);
  625 int     listen(int, int);
  626 ssize_t recv(int, void *, size_t, int);
  627 ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict);
  628 ssize_t recvmsg(int, struct msghdr *, int);
  629 #if __BSD_VISIBLE
  630 struct timespec;
  631 ssize_t recvmmsg(int, struct mmsghdr * __restrict, size_t, int,
  632     const struct timespec * __restrict);
  633 #endif
  634 ssize_t send(int, const void *, size_t, int);
  635 ssize_t sendto(int, const void *,
  636             size_t, int, const struct sockaddr *, socklen_t);
  637 ssize_t sendmsg(int, const struct msghdr *, int);
  638 #if __BSD_VISIBLE
  639 int     sendfile(int, int, off_t, size_t, struct sf_hdtr *, off_t *, int);
  640 ssize_t sendmmsg(int, struct mmsghdr * __restrict, size_t, int);
  641 int     setfib(int);
  642 #endif
  643 int     setsockopt(int, int, int, const void *, socklen_t);
  644 int     shutdown(int, int);
  645 int     sockatmark(int);
  646 int     socket(int, int, int);
  647 int     socketpair(int, int, int, int *);
  648 __END_DECLS
  649 
  650 #endif /* !_KERNEL */
  651 
  652 #ifdef _KERNEL
  653 struct socket;
  654 
  655 struct tcpcb *so_sototcpcb(struct socket *so);
  656 struct inpcb *so_sotoinpcb(struct socket *so);
  657 struct sockbuf *so_sockbuf_snd(struct socket *);
  658 struct sockbuf *so_sockbuf_rcv(struct socket *);
  659 
  660 int so_state_get(const struct socket *);
  661 void so_state_set(struct socket *, int);
  662 
  663 int so_options_get(const struct socket *);
  664 void so_options_set(struct socket *, int);
  665 
  666 int so_error_get(const struct socket *);
  667 void so_error_set(struct socket *, int);
  668 
  669 int so_linger_get(const struct socket *);
  670 void so_linger_set(struct socket *, int);
  671 
  672 struct protosw *so_protosw_get(const struct socket *);
  673 void so_protosw_set(struct socket *, struct protosw *);
  674 
  675 void so_sorwakeup_locked(struct socket *so);
  676 void so_sowwakeup_locked(struct socket *so);
  677 
  678 void so_sorwakeup(struct socket *so);
  679 void so_sowwakeup(struct socket *so);
  680 
  681 void so_lock(struct socket *so);
  682 void so_unlock(struct socket *so);
  683 
  684 void so_listeners_apply_all(struct socket *so, void (*func)(struct socket *, void *), void *arg);
  685 
  686 #endif
  687 
  688 
  689 #endif /* !_SYS_SOCKET_H_ */

Cache object: 01dd76cb36e188afec922c156debc26c


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


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