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1 #ifndef _LINUX_SOCKET_H |
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2 #define _LINUX_SOCKET_H |
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3 |
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4 /* |
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5 * Desired design of maximum size and alignment (see RFC2553) |
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6 */ |
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7 #define _K_SS_MAXSIZE 128 /* Implementation specific max size */ |
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8 #define _K_SS_ALIGNSIZE (__alignof__ (struct sockaddr *)) |
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9 /* Implementation specific desired alignment */ |
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10 |
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11 struct __kernel_sockaddr_storage { |
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12 unsigned short ss_family; /* address family */ |
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13 /* Following field(s) are implementation specific */ |
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14 char __data[_K_SS_MAXSIZE - sizeof(unsigned short)]; |
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15 /* space to achieve desired size, */ |
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16 /* _SS_MAXSIZE value minus size of ss_family */ |
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17 } __attribute__ ((aligned(_K_SS_ALIGNSIZE))); /* force desired alignment */ |
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18 |
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19 #if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) |
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20 |
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21 #include <asm/socket.h> /* arch-dependent defines */ |
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22 #include <linux/sockios.h> /* the SIOCxxx I/O controls */ |
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23 #include <linux/uio.h> /* iovec support */ |
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24 #include <linux/types.h> /* pid_t */ |
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25 #include <linux/compiler.h> /* __user */ |
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26 |
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27 #ifdef CONFIG_PROC_FS |
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28 struct seq_file; |
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29 extern void socket_seq_show(struct seq_file *seq); |
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30 #endif |
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31 |
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32 typedef unsigned short sa_family_t; |
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33 |
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34 /* |
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35 * 1003.1g requires sa_family_t and that sa_data is char. |
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36 */ |
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37 |
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38 struct sockaddr { |
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39 sa_family_t sa_family; /* address family, AF_xxx */ |
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40 char sa_data[14]; /* 14 bytes of protocol address */ |
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41 }; |
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42 |
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43 struct linger { |
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44 int l_onoff; /* Linger active */ |
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45 int l_linger; /* How long to linger for */ |
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46 }; |
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47 |
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48 #define sockaddr_storage __kernel_sockaddr_storage |
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49 |
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50 /* |
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51 * As we do 4.4BSD message passing we use a 4.4BSD message passing |
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52 * system, not 4.3. Thus msg_accrights(len) are now missing. They |
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53 * belong in an obscure libc emulation or the bin. |
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54 */ |
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55 |
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56 struct msghdr { |
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57 void * msg_name; /* Socket name */ |
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58 int msg_namelen; /* Length of name */ |
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59 struct iovec * msg_iov; /* Data blocks */ |
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60 __kernel_size_t msg_iovlen; /* Number of blocks */ |
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61 void * msg_control; /* Per protocol magic (eg BSD file descriptor passing) */ |
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62 __kernel_size_t msg_controllen; /* Length of cmsg list */ |
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63 unsigned msg_flags; |
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64 }; |
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65 |
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66 /* |
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67 * POSIX 1003.1g - ancillary data object information |
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68 * Ancillary data consits of a sequence of pairs of |
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69 * (cmsghdr, cmsg_data[]) |
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70 */ |
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71 |
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72 struct cmsghdr { |
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73 __kernel_size_t cmsg_len; /* data byte count, including hdr */ |
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74 int cmsg_level; /* originating protocol */ |
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75 int cmsg_type; /* protocol-specific type */ |
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76 }; |
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77 |
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78 /* |
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79 * Ancilliary data object information MACROS |
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80 * Table 5-14 of POSIX 1003.1g |
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81 */ |
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82 |
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83 #define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg)) |
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84 #define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg)) |
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85 |
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86 #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) ) |
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87 |
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88 #define CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr)))) |
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89 #define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(len)) |
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90 #define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len)) |
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91 |
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92 #define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \ |
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93 (struct cmsghdr *)(ctl) : \ |
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94 (struct cmsghdr *)NULL) |
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95 #define CMSG_FIRSTHDR(msg) __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen) |
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96 #define CMSG_OK(mhdr, cmsg) ((cmsg)->cmsg_len >= sizeof(struct cmsghdr) && \ |
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97 (cmsg)->cmsg_len <= (unsigned long) \ |
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98 ((mhdr)->msg_controllen - \ |
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99 ((char *)(cmsg) - (char *)(mhdr)->msg_control))) |
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100 |
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101 /* |
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102 * This mess will go away with glibc |
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103 */ |
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104 |
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105 #ifdef __KERNEL__ |
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106 #define __KINLINE static inline |
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107 #elif defined(__GNUC__) |
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108 #define __KINLINE static __inline__ |
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109 #elif defined(__cplusplus) |
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110 #define __KINLINE static inline |
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111 #else |
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112 #define __KINLINE static |
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113 #endif |
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114 |
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115 |
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116 /* |
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117 * Get the next cmsg header |
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118 * |
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119 * PLEASE, do not touch this function. If you think, that it is |
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120 * incorrect, grep kernel sources and think about consequences |
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121 * before trying to improve it. |
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122 * |
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123 * Now it always returns valid, not truncated ancillary object |
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124 * HEADER. But caller still MUST check, that cmsg->cmsg_len is |
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125 * inside range, given by msg->msg_controllen before using |
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126 * ancillary object DATA. --ANK (980731) |
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127 */ |
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128 |
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129 __KINLINE struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size, |
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130 struct cmsghdr *__cmsg) |
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131 { |
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132 struct cmsghdr * __ptr; |
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133 |
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134 __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) + CMSG_ALIGN(__cmsg->cmsg_len)); |
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135 if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size) |
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136 return (struct cmsghdr *)0; |
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137 |
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138 return __ptr; |
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139 } |
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140 |
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141 __KINLINE struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg) |
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142 { |
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143 return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg); |
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144 } |
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145 |
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146 /* "Socket"-level control message types: */ |
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147 |
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148 #define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */ |
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149 #define SCM_CREDENTIALS 0x02 /* rw: struct ucred */ |
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150 #define SCM_SECURITY 0x03 /* rw: security label */ |
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151 |
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152 struct ucred { |
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153 __u32 pid; |
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154 __u32 uid; |
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155 __u32 gid; |
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156 }; |
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157 |
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158 /* Supported address families. */ |
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159 #define AF_UNSPEC 0 |
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160 #define AF_UNIX 1 /* Unix domain sockets */ |
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161 #define AF_LOCAL 1 /* POSIX name for AF_UNIX */ |
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162 #define AF_INET 2 /* Internet IP Protocol */ |
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163 #define AF_AX25 3 /* Amateur Radio AX.25 */ |
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164 #define AF_IPX 4 /* Novell IPX */ |
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165 #define AF_APPLETALK 5 /* AppleTalk DDP */ |
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166 #define AF_NETROM 6 /* Amateur Radio NET/ROM */ |
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167 #define AF_BRIDGE 7 /* Multiprotocol bridge */ |
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168 #define AF_ATMPVC 8 /* ATM PVCs */ |
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169 #define AF_X25 9 /* Reserved for X.25 project */ |
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170 #define AF_INET6 10 /* IP version 6 */ |
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171 #define AF_ROSE 11 /* Amateur Radio X.25 PLP */ |
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172 #define AF_DECnet 12 /* Reserved for DECnet project */ |
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173 #define AF_NETBEUI 13 /* Reserved for 802.2LLC project*/ |
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174 #define AF_SECURITY 14 /* Security callback pseudo AF */ |
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175 #define AF_KEY 15 /* PF_KEY key management API */ |
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176 #define AF_NETLINK 16 |
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177 #define AF_ROUTE AF_NETLINK /* Alias to emulate 4.4BSD */ |
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178 #define AF_PACKET 17 /* Packet family */ |
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179 #define AF_ASH 18 /* Ash */ |
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180 #define AF_ECONET 19 /* Acorn Econet */ |
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181 #define AF_ATMSVC 20 /* ATM SVCs */ |
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182 #define AF_SNA 22 /* Linux SNA Project (nutters!) */ |
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183 #define AF_IRDA 23 /* IRDA sockets */ |
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184 #define AF_PPPOX 24 /* PPPoX sockets */ |
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185 #define AF_WANPIPE 25 /* Wanpipe API Sockets */ |
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186 #define AF_LLC 26 /* Linux LLC */ |
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187 #define AF_CAN 29 /* Controller Area Network */ |
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188 #define AF_TIPC 30 /* TIPC sockets */ |
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189 #define AF_BLUETOOTH 31 /* Bluetooth sockets */ |
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190 #define AF_IUCV 32 /* IUCV sockets */ |
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191 #define AF_RXRPC 33 /* RxRPC sockets */ |
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192 #define AF_ISDN 34 /* mISDN sockets */ |
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193 #define AF_PHONET 35 /* Phonet sockets */ |
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194 #define AF_MAX 36 /* For now.. */ |
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195 |
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196 /* Protocol families, same as address families. */ |
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197 #define PF_UNSPEC AF_UNSPEC |
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198 #define PF_UNIX AF_UNIX |
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199 #define PF_LOCAL AF_LOCAL |
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200 #define PF_INET AF_INET |
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201 #define PF_AX25 AF_AX25 |
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202 #define PF_IPX AF_IPX |
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203 #define PF_APPLETALK AF_APPLETALK |
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204 #define PF_NETROM AF_NETROM |
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205 #define PF_BRIDGE AF_BRIDGE |
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206 #define PF_ATMPVC AF_ATMPVC |
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207 #define PF_X25 AF_X25 |
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208 #define PF_INET6 AF_INET6 |
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209 #define PF_ROSE AF_ROSE |
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210 #define PF_DECnet AF_DECnet |
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211 #define PF_NETBEUI AF_NETBEUI |
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212 #define PF_SECURITY AF_SECURITY |
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213 #define PF_KEY AF_KEY |
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214 #define PF_NETLINK AF_NETLINK |
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215 #define PF_ROUTE AF_ROUTE |
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216 #define PF_PACKET AF_PACKET |
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217 #define PF_ASH AF_ASH |
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218 #define PF_ECONET AF_ECONET |
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219 #define PF_ATMSVC AF_ATMSVC |
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220 #define PF_SNA AF_SNA |
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221 #define PF_IRDA AF_IRDA |
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222 #define PF_PPPOX AF_PPPOX |
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223 #define PF_WANPIPE AF_WANPIPE |
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224 #define PF_LLC AF_LLC |
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225 #define PF_CAN AF_CAN |
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226 #define PF_TIPC AF_TIPC |
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227 #define PF_BLUETOOTH AF_BLUETOOTH |
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228 #define PF_IUCV AF_IUCV |
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229 #define PF_RXRPC AF_RXRPC |
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230 #define PF_ISDN AF_ISDN |
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231 #define PF_PHONET AF_PHONET |
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232 #define PF_MAX AF_MAX |
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233 |
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234 /* Maximum queue length specifiable by listen. */ |
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235 #define SOMAXCONN 128 |
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236 |
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237 /* Flags we can use with send/ and recv. |
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238 Added those for 1003.1g not all are supported yet |
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239 */ |
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240 |
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241 #define MSG_OOB 1 |
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242 #define MSG_PEEK 2 |
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243 #define MSG_DONTROUTE 4 |
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244 #define MSG_TRYHARD 4 /* Synonym for MSG_DONTROUTE for DECnet */ |
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245 #define MSG_CTRUNC 8 |
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246 #define MSG_PROBE 0x10 /* Do not send. Only probe path f.e. for MTU */ |
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247 #define MSG_TRUNC 0x20 |
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248 #define MSG_DONTWAIT 0x40 /* Nonblocking io */ |
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249 #define MSG_EOR 0x80 /* End of record */ |
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250 #define MSG_WAITALL 0x100 /* Wait for a full request */ |
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251 #define MSG_FIN 0x200 |
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252 #define MSG_SYN 0x400 |
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253 #define MSG_CONFIRM 0x800 /* Confirm path validity */ |
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254 #define MSG_RST 0x1000 |
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255 #define MSG_ERRQUEUE 0x2000 /* Fetch message from error queue */ |
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256 #define MSG_NOSIGNAL 0x4000 /* Do not generate SIGPIPE */ |
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257 #define MSG_MORE 0x8000 /* Sender will send more */ |
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258 |
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259 #define MSG_EOF MSG_FIN |
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260 |
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261 #define MSG_CMSG_CLOEXEC 0x40000000 /* Set close_on_exit for file |
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262 descriptor received through |
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263 SCM_RIGHTS */ |
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264 #if defined(CONFIG_COMPAT) |
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265 #define MSG_CMSG_COMPAT 0x80000000 /* This message needs 32 bit fixups */ |
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266 #else |
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267 #define MSG_CMSG_COMPAT 0 /* We never have 32 bit fixups */ |
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268 #endif |
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269 |
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270 |
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271 /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */ |
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272 #define SOL_IP 0 |
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273 /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */ |
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274 #define SOL_TCP 6 |
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275 #define SOL_UDP 17 |
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276 #define SOL_IPV6 41 |
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277 #define SOL_ICMPV6 58 |
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278 #define SOL_SCTP 132 |
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279 #define SOL_UDPLITE 136 /* UDP-Lite (RFC 3828) */ |
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280 #define SOL_RAW 255 |
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281 #define SOL_IPX 256 |
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282 #define SOL_AX25 257 |
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283 #define SOL_ATALK 258 |
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284 #define SOL_NETROM 259 |
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285 #define SOL_ROSE 260 |
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286 #define SOL_DECNET 261 |
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287 #define SOL_X25 262 |
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288 #define SOL_PACKET 263 |
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289 #define SOL_ATM 264 /* ATM layer (cell level) */ |
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290 #define SOL_AAL 265 /* ATM Adaption Layer (packet level) */ |
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291 #define SOL_IRDA 266 |
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292 #define SOL_NETBEUI 267 |
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293 #define SOL_LLC 268 |
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294 #define SOL_DCCP 269 |
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295 #define SOL_NETLINK 270 |
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296 #define SOL_TIPC 271 |
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297 #define SOL_RXRPC 272 |
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298 #define SOL_PPPOL2TP 273 |
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299 #define SOL_BLUETOOTH 274 |
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300 #define SOL_PNPIPE 275 |
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301 |
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302 /* IPX options */ |
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303 #define IPX_TYPE 1 |
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304 |
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305 #ifdef __KERNEL__ |
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306 extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len); |
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307 extern int memcpy_fromiovecend(unsigned char *kdata, struct iovec *iov, |
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308 int offset, int len); |
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309 extern int csum_partial_copy_fromiovecend(unsigned char *kdata, |
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310 struct iovec *iov, |
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311 int offset, |
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312 unsigned int len, __wsum *csump); |
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313 |
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314 extern int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr *address, int mode); |
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315 extern int memcpy_toiovec(struct iovec *v, unsigned char *kdata, int len); |
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316 extern int move_addr_to_user(struct sockaddr *kaddr, int klen, void __user *uaddr, int __user *ulen); |
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317 extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr); |
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318 extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data); |
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319 |
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320 #endif |
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321 #endif /* not kernel and not glibc */ |
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322 #endif /* _LINUX_SOCKET_H */ |