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linux_socket.h revision 1.17
      1 /*	$NetBSD: linux_socket.h,v 1.17 2009/06/16 23:17:02 njoly Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Frank van der Linden and Eric Haszlakiewicz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _LINUX_SOCKET_H
     33 #define _LINUX_SOCKET_H
     34 
     35 /*
     36  * Various Linux socket defines. Everything that is not re-defined here
     37  * is the same as in NetBSD.
     38  *
     39  * COMPAT_43 is assumed, and the osockaddr struct is used (it is what
     40  * Linux uses)
     41  */
     42 
     43 /*
     44  * Address families. There are fewer of them, and they're numbered
     45  * a bit different
     46  */
     47 
     48 #define LINUX_AF_UNSPEC		0
     49 #define LINUX_AF_UNIX		1
     50 #define LINUX_AF_INET		2
     51 #define LINUX_AF_AX25		3
     52 #define LINUX_AF_IPX		4
     53 #define LINUX_AF_APPLETALK	5
     54 #define LINUX_AF_NETROM		6
     55 #define LINUX_AF_BRIDGE		7
     56 #define LINUX_AF_ATMPVC		8
     57 #define LINUX_AF_X25		9
     58 #define LINUX_AF_INET6		10
     59 #define LINUX_AF_ROSE		11
     60 #define LINUX_AF_DECnet		12
     61 #define LINUX_AF_NETBEUI	13
     62 #define LINUX_AF_SECURITY	14
     63 #define LINUX_pseudo_AF_KEY	15
     64 #define LINUX_AF_NETLINK	16
     65 #define LINUX_AF_PACKET		17
     66 #define LINUX_AF_ASH		18
     67 #define LINUX_AF_ECONET		19
     68 #define	LINUX_AF_ATMSVC		20
     69 #define	LINUX_AF_SNA		22
     70 #define LINUX_AF_MAX		32
     71 
     72 /*
     73  * Option levels for [gs]etsockopt(2). Only SOL_SOCKET is different,
     74  * the rest matches IPPROTO_XXX
     75  */
     76 
     77 /* SOL_SOCKET is machine dependant on Linux */
     78 #define LINUX_SOL_IP		0
     79 #define LINUX_SOL_TCP		6
     80 #define LINUX_SOL_UDP		17
     81 /* Unused for now: */
     82 #define LINUX_SOL_IPV6		41
     83 #define LINUX_SOL_ICMPV6	58
     84 #define LINUX_SOL_RAW		255
     85 #define LINUX_SOL_IPX		256
     86 #define LINUX_SOL_AX25		257
     87 #define LINUX_SOL_ATALK		258
     88 #define LINUX_SOL_NETROM	259
     89 #define LINUX_SOL_ROSE		260
     90 #define LINUX_SOL_DECNET	261
     91 #define LINUX_SOL_X25		262
     92 #define LINUX_SOL_PACKET	263
     93 #define LINUX_SOL_ATM		264
     94 #define LINUX_SOL_AAL		265
     95 
     96 /*
     97  * Options for [gs]etsockopt(2), socket level are machine dependant.
     98  */
     99 
    100 /*
    101  * Options for [gs]etsockopt(2), IP level.
    102  */
    103 
    104 #define LINUX_IP_TOS		1
    105 #define LINUX_IP_TTL		2
    106 #define	LINUX_IP_MULTICAST_IF	32
    107 #define	LINUX_IP_MULTICAST_TTL	33
    108 #define	LINUX_IP_MULTICAST_LOOP	34
    109 #define	LINUX_IP_ADD_MEMBERSHIP	35
    110 #define	LINUX_IP_DROP_MEMBERSHIP 36
    111 
    112 /*
    113  * Options for [gs]etsockopt(2), TCP level.
    114  */
    115 
    116 #define	LINUX_TCP_NODELAY	1
    117 #define	LINUX_TCP_MAXSEG	2
    118 
    119 /* "Socket"-level control message types: */
    120 #define LINUX_SCM_RIGHTS	1	/* same as SCM_RIGHTS */
    121 #define LINUX_SCM_CREDENTIALS	2	/* accepts ucred rather than sockcred */
    122 #define LINUX_SCM_CONNECT	3	/* not supported in NetBSD */
    123 #define LINUX_SCM_TIMESTAMP	LINUX_SO_TIMESTAMP
    124 				/* not actually implemented in Linux 2.5.15? */
    125 
    126 /*
    127  * Message flags (for sendmsg/recvmsg)
    128  */
    129 #define LINUX_MSG_OOB		0x001
    130 #define LINUX_MSG_PEEK		0x002
    131 #define LINUX_MSG_DONTROUTE	0x004
    132 #define LINUX_MSG_TRYHARD	0x004
    133 #define LINUX_MSG_CTRUNC	0x008
    134 #define LINUX_MSG_PROBE		0x010	/* Don't send, only probe path */
    135 #define LINUX_MSG_TRUNC		0x020
    136 #define LINUX_MSG_DONTWAIT	0x040	/* this msg should be nonblocking */
    137 #define LINUX_MSG_EOR		0x080	/* data completes record */
    138 #define LINUX_MSG_WAITALL	0x100	/* wait for full request or error */
    139 #define LINUX_MSG_FIN		0x200
    140 #define LINUX_MSG_EOF		LINUX_MSG_FIN
    141 #define LINUX_MSG_SYN		0x400
    142 #define LINUX_MSG_CONFIRM	0x800	/* Confirm path validity */
    143 #define LINUX_MSG_RST		0x1000
    144 #define LINUX_MSG_ERRQUEUE	0x2000	/* fetch message from error queue */
    145 #define LINUX_MSG_NOSIGNAL	0x4000	/* do not generate SIGPIPE */
    146 #define LINUX_MSG_MORE		0x8000	/* Sender will send more */
    147 
    148 /*
    149  * Linux alignment requirement for CMSG struct manipulation.
    150  * Linux aligns on (size_t) boundary on all architectures.
    151  * Fortunately for linux, linux_cmsghdr is always size_t aligned !
    152  * since no padding is added between the header and data.
    153  * XXX: this code isn't right for the compat32 code.
    154  */
    155 struct linux_cmsghdr {
    156 	size_t	cmsg_len;	/* NB not socklen_t */
    157 	int	cmsg_level;
    158 	int	cmsg_type;
    159     /*	unsigned char __cmsg_data[0]; */
    160 };
    161 
    162 #define LINUX_CMSG_ALIGN(n)	\
    163 	(((n) + sizeof(size_t)-1) & ~(sizeof(size_t)-1))
    164 /* Linux either uses this, or  &((cmsg)->__cmsg_data) */
    165 #define LINUX_CMSG_DATA(cmsg)	\
    166 	((u_char *)((struct linux_cmsghdr *)(cmsg) + 1))
    167 #define	LINUX_CMSG_NXTHDR(mhdr, cmsg)	\
    168 	((((char *)(cmsg) + LINUX_CMSG_ALIGN((cmsg)->cmsg_len) + \
    169 			    sizeof(*(cmsg))) > \
    170 	    (((char *)(mhdr)->msg_control) + (mhdr)->msg_controllen)) ? \
    171 	    (struct linux_cmsghdr *)NULL : \
    172 	    (struct linux_cmsghdr *)((char *)(cmsg) + \
    173 	        LINUX_CMSG_ALIGN((cmsg)->cmsg_len)))
    174 /* This the number of bytes removed from each item (excl. final padding) */
    175 #define LINUX_CMSG_ALIGN_DELTA	\
    176 	(CMSG_ALIGN(sizeof(struct cmsghdr)) - sizeof(struct linux_cmsghdr))
    177 
    178 #define LINUX_CMSG_FIRSTHDR(mhdr) \
    179 	((mhdr)->msg_controllen >= sizeof(struct linux_cmsghdr) ? \
    180 	(struct linux_cmsghdr *)(mhdr)->msg_control : NULL)
    181 
    182 #define LINUX_CMSG_SPACE(l) \
    183 	(sizeof(struct linux_cmsghdr) + LINUX_CMSG_ALIGN(l))
    184 #define LINUX_CMSG_LEN(l) \
    185 	(sizeof(struct linux_cmsghdr) + (l))
    186 
    187 /*
    188  * Machine specific definitions.
    189  */
    190 #if defined(__i386__)
    191 #include <compat/linux/arch/i386/linux_socket.h>
    192 #elif defined(__m68k__)
    193 #include <compat/linux/arch/m68k/linux_socket.h>
    194 #elif defined(__alpha__)
    195 #include <compat/linux/arch/alpha/linux_socket.h>
    196 #elif defined(__powerpc__)
    197 #include <compat/linux/arch/powerpc/linux_socket.h>
    198 #elif defined(__mips__)
    199 #include <compat/linux/arch/mips/linux_socket.h>
    200 #elif defined(__arm__)
    201 #include <compat/linux/arch/arm/linux_socket.h>
    202 #elif defined(__amd64__)
    203 #include <compat/linux/arch/amd64/linux_socket.h>
    204 #else
    205 #error Undefined linux_socket.h machine type.
    206 #endif
    207 
    208 #endif /* !_LINUX_SOCKET_H */
    209