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Annotation of src/sys/sys/socket.h, Revision 1.15

1.15    ! neil        1: /*     $NetBSD: socket.h,v 1.14 1996/02/09 18:25:36 christos Exp $     */
1.10      cgd         2:
1.1       cgd         3: /*
1.8       mycroft     4:  * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
                      5:  *     The Regents of the University of California.  All rights reserved.
1.1       cgd         6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  * 3. All advertising materials mentioning features or use of this software
                     16:  *    must display the following acknowledgement:
                     17:  *     This product includes software developed by the University of
                     18:  *     California, Berkeley and its contributors.
                     19:  * 4. Neither the name of the University nor the names of its contributors
                     20:  *    may be used to endorse or promote products derived from this software
                     21:  *    without specific prior written permission.
                     22:  *
                     23:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     24:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     26:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     27:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     28:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     29:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     33:  * SUCH DAMAGE.
                     34:  *
1.9       cgd        35:  *     @(#)socket.h    8.4 (Berkeley) 2/21/94
1.1       cgd        36:  */
                     37:
1.2       mycroft    38: #ifndef _SYS_SOCKET_H_
1.8       mycroft    39: #define        _SYS_SOCKET_H_
1.2       mycroft    40:
1.1       cgd        41: /*
                     42:  * Definitions related to sockets: types, address families, options.
                     43:  */
                     44:
                     45: /*
                     46:  * Types
                     47:  */
                     48: #define        SOCK_STREAM     1               /* stream socket */
                     49: #define        SOCK_DGRAM      2               /* datagram socket */
                     50: #define        SOCK_RAW        3               /* raw-protocol interface */
                     51: #define        SOCK_RDM        4               /* reliably-delivered message */
                     52: #define        SOCK_SEQPACKET  5               /* sequenced packet stream */
                     53:
                     54: /*
                     55:  * Option flags per-socket.
                     56:  */
                     57: #define        SO_DEBUG        0x0001          /* turn on debugging info recording */
                     58: #define        SO_ACCEPTCONN   0x0002          /* socket has had listen() */
                     59: #define        SO_REUSEADDR    0x0004          /* allow local address reuse */
                     60: #define        SO_KEEPALIVE    0x0008          /* keep connections alive */
                     61: #define        SO_DONTROUTE    0x0010          /* just use interface addresses */
                     62: #define        SO_BROADCAST    0x0020          /* permit sending of broadcast msgs */
                     63: #define        SO_USELOOPBACK  0x0040          /* bypass hardware when possible */
                     64: #define        SO_LINGER       0x0080          /* linger on close if data present */
                     65: #define        SO_OOBINLINE    0x0100          /* leave received OOB data in line */
1.8       mycroft    66: #define        SO_REUSEPORT    0x0200          /* allow local address & port reuse */
1.1       cgd        67:
                     68: /*
                     69:  * Additional options, not kept in so_options.
                     70:  */
                     71: #define SO_SNDBUF      0x1001          /* send buffer size */
                     72: #define SO_RCVBUF      0x1002          /* receive buffer size */
                     73: #define SO_SNDLOWAT    0x1003          /* send low-water mark */
                     74: #define SO_RCVLOWAT    0x1004          /* receive low-water mark */
                     75: #define SO_SNDTIMEO    0x1005          /* send timeout */
                     76: #define SO_RCVTIMEO    0x1006          /* receive timeout */
                     77: #define        SO_ERROR        0x1007          /* get error status and clear */
                     78: #define        SO_TYPE         0x1008          /* get socket type */
                     79:
                     80: /*
                     81:  * Structure used for manipulating linger option.
                     82:  */
                     83: struct linger {
                     84:        int     l_onoff;                /* option on/off */
                     85:        int     l_linger;               /* linger time */
                     86: };
                     87:
                     88: /*
                     89:  * Level number for (get/set)sockopt() to apply to socket itself.
                     90:  */
                     91: #define        SOL_SOCKET      0xffff          /* options for socket level */
                     92:
                     93: /*
                     94:  * Address families.
                     95:  */
                     96: #define        AF_UNSPEC       0               /* unspecified */
1.8       mycroft    97: #define        AF_LOCAL        1               /* local to host (pipes, portals) */
                     98: #define        AF_UNIX         AF_LOCAL        /* backward compatibility */
1.1       cgd        99: #define        AF_INET         2               /* internetwork: UDP, TCP, etc. */
                    100: #define        AF_IMPLINK      3               /* arpanet imp addresses */
                    101: #define        AF_PUP          4               /* pup protocols: e.g. BSP */
                    102: #define        AF_CHAOS        5               /* mit CHAOS protocols */
                    103: #define        AF_NS           6               /* XEROX NS protocols */
                    104: #define        AF_ISO          7               /* ISO protocols */
                    105: #define        AF_OSI          AF_ISO
                    106: #define        AF_ECMA         8               /* european computer manufacturers */
                    107: #define        AF_DATAKIT      9               /* datakit protocols */
                    108: #define        AF_CCITT        10              /* CCITT protocols, X.25 etc */
                    109: #define        AF_SNA          11              /* IBM SNA */
                    110: #define AF_DECnet      12              /* DECnet */
                    111: #define AF_DLI         13              /* DEC Direct data link interface */
                    112: #define AF_LAT         14              /* LAT */
                    113: #define        AF_HYLINK       15              /* NSC Hyperchannel */
                    114: #define        AF_APPLETALK    16              /* Apple Talk */
                    115: #define        AF_ROUTE        17              /* Internal Routing Protocol */
                    116: #define        AF_LINK         18              /* Link layer interface */
                    117: #define        pseudo_AF_XTP   19              /* eXpress Transfer Protocol (no AF) */
1.8       mycroft   118: #define        AF_COIP         20              /* connection-oriented IP, aka ST II */
                    119: #define        AF_CNT          21              /* Computer Network Technology */
                    120: #define pseudo_AF_RTIP 22              /* Help Identify RTIP packets */
                    121: #define        AF_IPX          23              /* Novell Internet Protocol */
                    122: #define        AF_SIP          24              /* Simple Internet Protocol */
                    123: #define pseudo_AF_PIP  25              /* Help Identify PIP packets */
1.1       cgd       124:
1.8       mycroft   125: #define        AF_MAX          26
1.1       cgd       126:
                    127: /*
                    128:  * Structure used by kernel to store most
                    129:  * addresses.
                    130:  */
                    131: struct sockaddr {
                    132:        u_char  sa_len;                 /* total length */
                    133:        u_char  sa_family;              /* address family */
                    134:        char    sa_data[14];            /* actually longer; address value */
                    135: };
                    136:
                    137: /*
                    138:  * Structure used by kernel to pass protocol
                    139:  * information in raw sockets.
                    140:  */
                    141: struct sockproto {
                    142:        u_short sp_family;              /* address family */
                    143:        u_short sp_protocol;            /* protocol */
                    144: };
                    145:
                    146: /*
                    147:  * Protocol families, same as address families for now.
                    148:  */
                    149: #define        PF_UNSPEC       AF_UNSPEC
1.8       mycroft   150: #define        PF_LOCAL        AF_LOCAL
                    151: #define        PF_UNIX         PF_LOCAL        /* backward compatibility */
1.1       cgd       152: #define        PF_INET         AF_INET
                    153: #define        PF_IMPLINK      AF_IMPLINK
                    154: #define        PF_PUP          AF_PUP
                    155: #define        PF_CHAOS        AF_CHAOS
                    156: #define        PF_NS           AF_NS
                    157: #define        PF_ISO          AF_ISO
                    158: #define        PF_OSI          AF_ISO
                    159: #define        PF_ECMA         AF_ECMA
                    160: #define        PF_DATAKIT      AF_DATAKIT
                    161: #define        PF_CCITT        AF_CCITT
                    162: #define        PF_SNA          AF_SNA
                    163: #define PF_DECnet      AF_DECnet
                    164: #define PF_DLI         AF_DLI
                    165: #define PF_LAT         AF_LAT
                    166: #define        PF_HYLINK       AF_HYLINK
                    167: #define        PF_APPLETALK    AF_APPLETALK
                    168: #define        PF_ROUTE        AF_ROUTE
                    169: #define        PF_LINK         AF_LINK
                    170: #define        PF_XTP          pseudo_AF_XTP   /* really just proto family, no AF */
1.8       mycroft   171: #define        PF_COIP         AF_COIP
                    172: #define        PF_CNT          AF_CNT
                    173: #define        PF_SIP          AF_SIP
                    174: #define        PF_IPX          AF_IPX          /* same format as AF_NS */
                    175: #define PF_RTIP                pseudo_AF_FTIP  /* same format as AF_INET */
                    176: #define PF_PIP         pseudo_AF_PIP
1.1       cgd       177:
                    178: #define        PF_MAX          AF_MAX
                    179:
                    180: /*
1.8       mycroft   181:  * Definitions for network related sysctl, CTL_NET.
                    182:  *
                    183:  * Second level is protocol family.
                    184:  * Third level is protocol number.
                    185:  *
                    186:  * Further levels are defined by the individual families below.
                    187:  */
                    188: #define NET_MAXID      AF_MAX
                    189:
                    190: #define CTL_NET_NAMES { \
                    191:        { 0, 0 }, \
                    192:        { "unix", CTLTYPE_NODE }, \
                    193:        { "inet", CTLTYPE_NODE }, \
                    194:        { "implink", CTLTYPE_NODE }, \
                    195:        { "pup", CTLTYPE_NODE }, \
                    196:        { "chaos", CTLTYPE_NODE }, \
                    197:        { "xerox_ns", CTLTYPE_NODE }, \
                    198:        { "iso", CTLTYPE_NODE }, \
                    199:        { "emca", CTLTYPE_NODE }, \
                    200:        { "datakit", CTLTYPE_NODE }, \
                    201:        { "ccitt", CTLTYPE_NODE }, \
                    202:        { "ibm_sna", CTLTYPE_NODE }, \
                    203:        { "decnet", CTLTYPE_NODE }, \
                    204:        { "dec_dli", CTLTYPE_NODE }, \
                    205:        { "lat", CTLTYPE_NODE }, \
                    206:        { "hylink", CTLTYPE_NODE }, \
                    207:        { "appletalk", CTLTYPE_NODE }, \
                    208:        { "route", CTLTYPE_NODE }, \
                    209:        { "link_layer", CTLTYPE_NODE }, \
                    210:        { "xtp", CTLTYPE_NODE }, \
                    211:        { "coip", CTLTYPE_NODE }, \
                    212:        { "cnt", CTLTYPE_NODE }, \
                    213:        { "rtip", CTLTYPE_NODE }, \
                    214:        { "ipx", CTLTYPE_NODE }, \
                    215:        { "sip", CTLTYPE_NODE }, \
                    216:        { "pip", CTLTYPE_NODE }, \
                    217: }
                    218:
                    219: /*
                    220:  * PF_ROUTE - Routing table
                    221:  *
                    222:  * Three additional levels are defined:
                    223:  *     Fourth: address family, 0 is wildcard
                    224:  *     Fifth: type of info, defined below
                    225:  *     Sixth: flag(s) to mask with for NET_RT_FLAGS
                    226:  */
                    227: #define NET_RT_DUMP    1               /* dump; may limit to a.f. */
                    228: #define NET_RT_FLAGS   2               /* by flags, e.g. RESOLVING */
                    229: #define NET_RT_IFLIST  3               /* survey interface list */
                    230: #define        NET_RT_MAXID    4
                    231:
                    232: #define CTL_NET_RT_NAMES { \
                    233:        { 0, 0 }, \
                    234:        { "dump", CTLTYPE_STRUCT }, \
                    235:        { "flags", CTLTYPE_STRUCT }, \
                    236:        { "iflist", CTLTYPE_STRUCT }, \
                    237: }
                    238:
                    239: /*
1.13      mycroft   240:  * Maximum queue length specifiable by listen(2).
1.1       cgd       241:  */
1.15    ! neil      242: #ifndef SOMAXCONN
1.13      mycroft   243: #define        SOMAXCONN       128
1.15    ! neil      244: #endif
1.1       cgd       245: /*
                    246:  * Message header for recvmsg and sendmsg calls.
                    247:  * Used value-result for recvmsg, value only for sendmsg.
                    248:  */
                    249: struct msghdr {
                    250:        caddr_t msg_name;               /* optional address */
                    251:        u_int   msg_namelen;            /* size of address */
                    252:        struct  iovec *msg_iov;         /* scatter/gather array */
                    253:        u_int   msg_iovlen;             /* # elements in msg_iov */
                    254:        caddr_t msg_control;            /* ancillary data, see below */
                    255:        u_int   msg_controllen;         /* ancillary data buffer len */
                    256:        int     msg_flags;              /* flags on received message */
                    257: };
                    258:
                    259: #define        MSG_OOB         0x1             /* process out-of-band data */
                    260: #define        MSG_PEEK        0x2             /* peek at incoming message */
                    261: #define        MSG_DONTROUTE   0x4             /* send without using routing tables */
                    262: #define        MSG_EOR         0x8             /* data completes record */
                    263: #define        MSG_TRUNC       0x10            /* data discarded before delivery */
                    264: #define        MSG_CTRUNC      0x20            /* control data lost before delivery */
                    265: #define        MSG_WAITALL     0x40            /* wait for full request or error */
1.8       mycroft   266: #define        MSG_DONTWAIT    0x80            /* this message should be nonblocking */
1.1       cgd       267:
                    268: /*
                    269:  * Header for ancillary data objects in msg_control buffer.
                    270:  * Used for additional information with/about a datagram
                    271:  * not expressible by flags.  The format is a sequence
                    272:  * of message elements headed by cmsghdr structures.
                    273:  */
                    274: struct cmsghdr {
                    275:        u_int   cmsg_len;               /* data byte count, including hdr */
                    276:        int     cmsg_level;             /* originating protocol */
                    277:        int     cmsg_type;              /* protocol-specific type */
                    278: /* followed by u_char  cmsg_data[]; */
                    279: };
                    280:
1.8       mycroft   281: /* given pointer to struct cmsghdr, return pointer to data */
1.1       cgd       282: #define        CMSG_DATA(cmsg)         ((u_char *)((cmsg) + 1))
                    283:
1.8       mycroft   284: /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
1.1       cgd       285: #define        CMSG_NXTHDR(mhdr, cmsg) \
                    286:        (((caddr_t)(cmsg) + (cmsg)->cmsg_len + sizeof(struct cmsghdr) > \
                    287:            (mhdr)->msg_control + (mhdr)->msg_controllen) ? \
                    288:            (struct cmsghdr *)NULL : \
                    289:            (struct cmsghdr *)((caddr_t)(cmsg) + ALIGN((cmsg)->cmsg_len)))
                    290:
                    291: #define        CMSG_FIRSTHDR(mhdr)     ((struct cmsghdr *)(mhdr)->msg_control)
                    292:
                    293: /* "Socket"-level control message types: */
                    294: #define        SCM_RIGHTS      0x01            /* access rights (array of int) */
                    295:
                    296: /*
                    297:  * 4.3 compat sockaddr, move to compat file later
                    298:  */
                    299: struct osockaddr {
                    300:        u_short sa_family;              /* address family */
                    301:        char    sa_data[14];            /* up to 14 bytes of direct address */
                    302: };
                    303:
                    304: /*
                    305:  * 4.3-compat message header (move to compat file later).
                    306:  */
                    307: struct omsghdr {
                    308:        caddr_t msg_name;               /* optional address */
                    309:        int     msg_namelen;            /* size of address */
                    310:        struct  iovec *msg_iov;         /* scatter/gather array */
                    311:        int     msg_iovlen;             /* # elements in msg_iov */
                    312:        caddr_t msg_accrights;          /* access rights sent/received */
                    313:        int     msg_accrightslen;
                    314: };
                    315:
1.12      briggs    316: #ifndef        _KERNEL
1.1       cgd       317:
                    318: #include <sys/cdefs.h>
                    319:
                    320: __BEGIN_DECLS
                    321: int    accept __P((int, struct sockaddr *, int *));
                    322: int    bind __P((int, const struct sockaddr *, int));
                    323: int    connect __P((int, const struct sockaddr *, int));
                    324: int    getpeername __P((int, struct sockaddr *, int *));
                    325: int    getsockname __P((int, struct sockaddr *, int *));
                    326: int    getsockopt __P((int, int, int, void *, int *));
                    327: int    listen __P((int, int));
1.8       mycroft   328: ssize_t        recv __P((int, void *, size_t, int));
                    329: ssize_t        recvfrom __P((int, void *, size_t, int, struct sockaddr *, int *));
                    330: ssize_t        recvmsg __P((int, struct msghdr *, int));
                    331: ssize_t        send __P((int, const void *, size_t, int));
                    332: ssize_t        sendto __P((int, const void *,
                    333:            size_t, int, const struct sockaddr *, int));
                    334: ssize_t        sendmsg __P((int, const struct msghdr *, int));
1.1       cgd       335: int    setsockopt __P((int, int, int, const void *, int));
                    336: int    shutdown __P((int, int));
                    337: int    socket __P((int, int, int));
                    338: int    socketpair __P((int, int, int, int *));
                    339: __END_DECLS
1.14      christos  340: #else
                    341: # if defined(COMPAT_43) || defined(COMPAT_SUNOS) || defined(COMPAT_LINUX) || \
                    342:      defined(COMPAT_HPUX) || defined(COMPAT_FREEBSD)
                    343: #  define COMPAT_OLDSOCK
                    344: #  define MSG_COMPAT   0x8000
                    345: # endif
                    346: #endif /* !_KERNEL */
1.1       cgd       347:
1.2       mycroft   348: #endif /* !_SYS_SOCKET_H_ */

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