1 /* $NetBSD: linux_socket.h,v 1.25 2021/09/23 06:56:27 ryo 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 dependent on Linux */ 78 #define LINUX_SOL_IP 0 79 #define LINUX_SOL_TCP 6 80 #define LINUX_SOL_UDP 17 81 #define LINUX_SOL_IPV6 41 82 /* Unused for now: */ 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 dependent. 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_HDRINCL 3 107 #define LINUX_IP_RECVERR 11 108 #define LINUX_IP_MULTICAST_IF 32 109 #define LINUX_IP_MULTICAST_TTL 33 110 #define LINUX_IP_MULTICAST_LOOP 34 111 #define LINUX_IP_ADD_MEMBERSHIP 35 112 #define LINUX_IP_DROP_MEMBERSHIP 36 113 114 /* 115 * Options for [gs]etsockopt(2), IPV6 level. 116 */ 117 118 #define LINUX_IPV6_V6ONLY 26 119 120 /* 121 * Options for [gs]etsockopt(2), TCP level. 122 */ 123 124 #define LINUX_TCP_NODELAY 1 125 #define LINUX_TCP_MAXSEG 2 126 127 /* "Socket"-level control message types: */ 128 #define LINUX_SCM_RIGHTS 1 /* same as SCM_RIGHTS */ 129 #define LINUX_SCM_CREDENTIALS 2 /* accepts ucred rather than sockcred */ 130 #define LINUX_SCM_CONNECT 3 /* not supported in NetBSD */ 131 #define LINUX_SCM_TIMESTAMP LINUX_SO_TIMESTAMP 132 /* not actually implemented in Linux 2.5.15? */ 133 134 struct linux_msghdr { 135 void *msg_name; 136 int msg_namelen; 137 struct iovec *msg_iov; 138 size_t msg_iovlen; 139 void *msg_control; 140 size_t msg_controllen; 141 unsigned int msg_flags; 142 }; 143 144 struct linux_mmsghdr { 145 struct linux_msghdr msg_hdr; 146 unsigned int msg_len; 147 }; 148 149 /* 150 * Message flags (for sendmsg/recvmsg) 151 */ 152 #define LINUX_MSG_OOB 0x001 153 #define LINUX_MSG_PEEK 0x002 154 #define LINUX_MSG_DONTROUTE 0x004 155 #define LINUX_MSG_TRYHARD 0x004 156 #define LINUX_MSG_CTRUNC 0x008 157 #define LINUX_MSG_PROBE 0x010 /* Don't send, only probe path */ 158 #define LINUX_MSG_TRUNC 0x020 159 #define LINUX_MSG_DONTWAIT 0x040 /* this msg should be nonblocking */ 160 #define LINUX_MSG_EOR 0x080 /* data completes record */ 161 #define LINUX_MSG_WAITALL 0x100 /* wait for full request or error */ 162 #define LINUX_MSG_FIN 0x200 163 #define LINUX_MSG_EOF LINUX_MSG_FIN 164 #define LINUX_MSG_SYN 0x400 165 #define LINUX_MSG_CONFIRM 0x800 /* Confirm path validity */ 166 #define LINUX_MSG_RST 0x1000 167 #define LINUX_MSG_ERRQUEUE 0x2000 /* fetch message from error queue */ 168 #define LINUX_MSG_NOSIGNAL 0x4000 /* do not generate SIGPIPE */ 169 #define LINUX_MSG_MORE 0x8000 /* Sender will send more */ 170 171 /* 172 * Linux alignment requirement for CMSG struct manipulation. 173 * Linux aligns on (size_t) boundary on all architectures. 174 * Fortunately for linux, linux_cmsghdr is always size_t aligned ! 175 * since no padding is added between the header and data. 176 * XXX: this code isn't right for the compat32 code. 177 */ 178 struct linux_cmsghdr { 179 size_t cmsg_len; /* NB not socklen_t */ 180 int cmsg_level; 181 int cmsg_type; 182 /* unsigned char __cmsg_data[0]; */ 183 }; 184 185 #define LINUX_CMSG_ALIGN(n) \ 186 (((n) + sizeof(size_t)-1) & ~(sizeof(size_t)-1)) 187 /* Linux either uses this, or &((cmsg)->__cmsg_data) */ 188 #define LINUX_CMSG_DATA(cmsg) \ 189 ((u_char *)((struct linux_cmsghdr *)(cmsg) + 1)) 190 #define LINUX_CMSG_NXTHDR(mhdr, ucmsg, kcmsg) \ 191 ((((char *)(ucmsg) + LINUX_CMSG_ALIGN((kcmsg)->cmsg_len) + \ 192 sizeof(*(ucmsg))) > \ 193 (((char *)(mhdr)->msg_control) + (mhdr)->msg_controllen)) ? \ 194 (struct linux_cmsghdr *)NULL : \ 195 (struct linux_cmsghdr *)((char *)(ucmsg) + \ 196 LINUX_CMSG_ALIGN((kcmsg)->cmsg_len))) 197 /* This the number of bytes removed from each item (excl. final padding) */ 198 #define LINUX_CMSG_ALIGN_DELTA \ 199 (CMSG_ALIGN(sizeof(struct cmsghdr)) - sizeof(struct linux_cmsghdr)) 200 201 #define LINUX_CMSG_FIRSTHDR(mhdr) \ 202 ((mhdr)->msg_controllen >= sizeof(struct linux_cmsghdr) ? \ 203 (struct linux_cmsghdr *)(mhdr)->msg_control : NULL) 204 205 #define LINUX_CMSG_SPACE(l) \ 206 (sizeof(struct linux_cmsghdr) + LINUX_CMSG_ALIGN(l)) 207 #define LINUX_CMSG_LEN(l) \ 208 (sizeof(struct linux_cmsghdr) + (l)) 209 210 /* 211 * Machine specific definitions. 212 */ 213 #if defined(__i386__) 214 #include <compat/linux/arch/i386/linux_socket.h> 215 #elif defined(__m68k__) 216 #include <compat/linux/arch/m68k/linux_socket.h> 217 #elif defined(__alpha__) 218 #include <compat/linux/arch/alpha/linux_socket.h> 219 #elif defined(__powerpc__) 220 #include <compat/linux/arch/powerpc/linux_socket.h> 221 #elif defined(__mips__) 222 #include <compat/linux/arch/mips/linux_socket.h> 223 #elif defined(__aarch64__) 224 #include <compat/linux/arch/aarch64/linux_socket.h> 225 #elif defined(__arm__) 226 #include <compat/linux/arch/arm/linux_socket.h> 227 #elif defined(__amd64__) 228 #include <compat/linux/arch/amd64/linux_socket.h> 229 #else 230 #error Undefined linux_socket.h machine type. 231 #endif 232 233 /* 234 * Flags for socket(). 235 * These are provided in the "type" parameter. 236 */ 237 238 #define LINUX_SOCK_TYPE_MASK 0xf 239 #define LINUX_SOCK_CLOEXEC LINUX_O_CLOEXEC 240 #ifndef LINUX_SOCK_NONBLOCK 241 #define LINUX_SOCK_NONBLOCK LINUX_O_NONBLOCK 242 #endif 243 244 #endif /* !_LINUX_SOCKET_H */ 245