1 #!/usr/bin/env bash 2 # Copyright 2009 The Go Authors. All rights reserved. 3 # Use of this source code is governed by a BSD-style 4 # license that can be found in the LICENSE file. 5 6 # Generate Go code listing errors and other #defined constant 7 # values (ENAMETOOLONG etc.), by asking the preprocessor 8 # about the definitions. 9 10 unset LANG 11 export LC_ALL=C 12 export LC_CTYPE=C 13 14 CC=${CC:-gcc} 15 16 uname=$(uname) 17 18 includes_Darwin=' 19 #define _DARWIN_C_SOURCE 20 #define KERNEL 21 #define _DARWIN_USE_64_BIT_INODE 22 #include <sys/types.h> 23 #include <sys/event.h> 24 #include <sys/ptrace.h> 25 #include <sys/socket.h> 26 #include <sys/sockio.h> 27 #include <sys/sysctl.h> 28 #include <sys/mman.h> 29 #include <sys/wait.h> 30 #include <net/bpf.h> 31 #include <net/if.h> 32 #include <net/if_types.h> 33 #include <net/route.h> 34 #include <netinet/in.h> 35 #include <netinet/ip.h> 36 #include <netinet/ip_mroute.h> 37 #include <termios.h> 38 ' 39 40 includes_DragonFly=' 41 #include <sys/types.h> 42 #include <sys/event.h> 43 #include <sys/socket.h> 44 #include <sys/sockio.h> 45 #include <sys/sysctl.h> 46 #include <sys/mman.h> 47 #include <sys/wait.h> 48 #include <sys/ioctl.h> 49 #include <net/bpf.h> 50 #include <net/if.h> 51 #include <net/if_types.h> 52 #include <net/route.h> 53 #include <netinet/in.h> 54 #include <termios.h> 55 #include <netinet/ip.h> 56 #include <net/ip_mroute/ip_mroute.h> 57 ' 58 59 includes_FreeBSD=' 60 #include <sys/param.h> 61 #include <sys/types.h> 62 #include <sys/event.h> 63 #include <sys/socket.h> 64 #include <sys/sockio.h> 65 #include <sys/sysctl.h> 66 #include <sys/mman.h> 67 #include <sys/wait.h> 68 #include <sys/ioctl.h> 69 #include <net/bpf.h> 70 #include <net/if.h> 71 #include <net/if_types.h> 72 #include <net/route.h> 73 #include <netinet/in.h> 74 #include <termios.h> 75 #include <netinet/ip.h> 76 #include <netinet/ip_mroute.h> 77 78 #if __FreeBSD__ >= 10 79 #define IFT_CARP 0xf8 // IFT_CARP is deprecated in FreeBSD 10 80 #undef SIOCAIFADDR 81 #define SIOCAIFADDR _IOW(105, 26, struct oifaliasreq) // ifaliasreq contains if_data 82 #undef SIOCSIFPHYADDR 83 #define SIOCSIFPHYADDR _IOW(105, 70, struct oifaliasreq) // ifaliasreq contains if_data 84 #endif 85 ' 86 87 includes_Linux=' 88 #define _LARGEFILE_SOURCE 89 #define _LARGEFILE64_SOURCE 90 #ifndef __LP64__ 91 #define _FILE_OFFSET_BITS 64 92 #endif 93 #define _GNU_SOURCE 94 95 #include <bits/sockaddr.h> 96 #include <sys/epoll.h> 97 #include <sys/inotify.h> 98 #include <sys/ioctl.h> 99 #include <sys/mman.h> 100 #include <sys/mount.h> 101 #include <sys/prctl.h> 102 #include <sys/stat.h> 103 #include <sys/types.h> 104 #include <sys/time.h> 105 #include <sys/socket.h> 106 #include <linux/if.h> 107 #include <linux/if_arp.h> 108 #include <linux/if_ether.h> 109 #include <linux/if_tun.h> 110 #include <linux/if_packet.h> 111 #include <linux/if_addr.h> 112 #include <linux/filter.h> 113 #include <linux/netlink.h> 114 #include <linux/reboot.h> 115 #include <linux/rtnetlink.h> 116 #include <linux/ptrace.h> 117 #include <linux/sched.h> 118 #include <linux/wait.h> 119 #include <linux/icmpv6.h> 120 #include <net/route.h> 121 #include <termios.h> 122 123 #ifndef MSG_FASTOPEN 124 #define MSG_FASTOPEN 0x20000000 125 #endif 126 127 #ifndef PTRACE_GETREGS 128 #define PTRACE_GETREGS 0xc 129 #endif 130 131 #ifndef PTRACE_SETREGS 132 #define PTRACE_SETREGS 0xd 133 #endif 134 ' 135 136 includes_NetBSD=' 137 #include <sys/types.h> 138 #include <sys/param.h> 139 #include <sys/event.h> 140 #include <sys/mman.h> 141 #include <sys/socket.h> 142 #include <sys/sockio.h> 143 #include <sys/sysctl.h> 144 #include <sys/termios.h> 145 #include <sys/ttycom.h> 146 #include <sys/wait.h> 147 #include <net/bpf.h> 148 #include <net/if.h> 149 #include <net/if_types.h> 150 #include <net/route.h> 151 #include <netinet/in.h> 152 #include <netinet/in_systm.h> 153 #include <netinet/ip.h> 154 #include <netinet/ip_mroute.h> 155 #include <netinet/if_ether.h> 156 157 // Needed since <sys/param.h> refers to it... 158 #define schedppq 1 159 ' 160 161 includes_OpenBSD=' 162 #include <sys/types.h> 163 #include <sys/param.h> 164 #include <sys/event.h> 165 #include <sys/mman.h> 166 #include <sys/socket.h> 167 #include <sys/sockio.h> 168 #include <sys/sysctl.h> 169 #include <sys/termios.h> 170 #include <sys/ttycom.h> 171 #include <sys/wait.h> 172 #include <net/bpf.h> 173 #include <net/if.h> 174 #include <net/if_types.h> 175 #include <net/if_var.h> 176 #include <net/route.h> 177 #include <netinet/in.h> 178 #include <netinet/in_systm.h> 179 #include <netinet/ip.h> 180 #include <netinet/ip_mroute.h> 181 #include <netinet/if_ether.h> 182 #include <net/if_bridge.h> 183 184 // We keep some constants not supported in OpenBSD 5.5 and beyond for 185 // the promise of compatibility. 186 #define EMUL_ENABLED 0x1 187 #define EMUL_NATIVE 0x2 188 #define IPV6_FAITH 0x1d 189 #define IPV6_OPTIONS 0x1 190 #define IPV6_RTHDR_STRICT 0x1 191 #define IPV6_SOCKOPT_RESERVED1 0x3 192 #define SIOCGIFGENERIC 0xc020693a 193 #define SIOCSIFGENERIC 0x80206939 194 #define WALTSIG 0x4 195 ' 196 197 includes_SunOS=' 198 #include <sys/types.h> 199 #include <sys/socket.h> 200 #include <sys/sockio.h> 201 #include <sys/mman.h> 202 #include <sys/wait.h> 203 #include <sys/ioctl.h> 204 #include <net/bpf.h> 205 #include <net/if.h> 206 #include <net/if_arp.h> 207 #include <net/if_types.h> 208 #include <net/route.h> 209 #include <netinet/in.h> 210 #include <termios.h> 211 #include <netinet/ip.h> 212 #include <netinet/ip_mroute.h> 213 ' 214 215 includes=' 216 #include <sys/types.h> 217 #include <sys/file.h> 218 #include <fcntl.h> 219 #include <dirent.h> 220 #include <sys/socket.h> 221 #include <netinet/in.h> 222 #include <netinet/ip.h> 223 #include <netinet/ip6.h> 224 #include <netinet/tcp.h> 225 #include <errno.h> 226 #include <sys/signal.h> 227 #include <signal.h> 228 #include <sys/resource.h> 229 ' 230 231 ccflags="$@" 232 233 # Write go tool cgo -godefs input. 234 ( 235 echo package syscall 236 echo 237 echo '/*' 238 indirect="includes_$(uname)" 239 echo "${!indirect} $includes" 240 echo '*/' 241 echo 'import "C"' 242 echo 243 echo 'const (' 244 245 # The gcc command line prints all the #defines 246 # it encounters while processing the input 247 echo "${!indirect} $includes" | $CC -x c - -E -dM $ccflags | 248 awk ' 249 $1 != "#define" || $2 ~ /\(/ || $3 == "" {next} 250 251 $2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next} # 386 registers 252 $2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next} 253 $2 ~ /^(SCM_SRCRT)$/ {next} 254 $2 ~ /^(MAP_FAILED)$/ {next} 255 $2 ~ /^ELF_.*$/ {next} # <asm/elf.h> contains ELF_ARCH, etc. 256 257 $2 !~ /^ETH_/ && 258 $2 !~ /^EPROC_/ && 259 $2 !~ /^EQUIV_/ && 260 $2 !~ /^EXPR_/ && 261 $2 ~ /^E[A-Z0-9_]+$/ || 262 $2 ~ /^B[0-9_]+$/ || 263 $2 ~ /^V[A-Z0-9]+$/ || 264 $2 ~ /^CS[A-Z0-9]/ || 265 $2 ~ /^I(SIG|CANON|CRNL|EXTEN|MAXBEL|STRIP|UTF8)$/ || 266 $2 ~ /^IGN/ || 267 $2 ~ /^IX(ON|ANY|OFF)$/ || 268 $2 ~ /^IN(LCR|PCK)$/ || 269 $2 ~ /(^FLU?SH)|(FLU?SH$)/ || 270 $2 ~ /^C(LOCAL|READ)$/ || 271 $2 == "BRKINT" || 272 $2 == "HUPCL" || 273 $2 == "PENDIN" || 274 $2 == "TOSTOP" || 275 $2 ~ /^PAR/ || 276 $2 ~ /^SIG[^_]/ || 277 $2 ~ /^O[CNPFP][A-Z]+[^_][A-Z]+$/ || 278 $2 ~ /^IN_/ || 279 $2 ~ /^LOCK_(SH|EX|NB|UN)$/ || 280 $2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|EVFILT|NOTE|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ || 281 $2 == "ICMPV6_FILTER" || 282 $2 == "SOMAXCONN" || 283 $2 == "NAME_MAX" || 284 $2 == "IFNAMSIZ" || 285 $2 ~ /^CTL_(MAXNAME|NET|QUERY)$/ || 286 $2 ~ /^SYSCTL_VERS/ || 287 $2 ~ /^(MS|MNT)_/ || 288 $2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ || 289 $2 ~ /^(O|F|FD|NAME|S|PTRACE|PT)_/ || 290 $2 ~ /^LINUX_REBOOT_CMD_/ || 291 $2 ~ /^LINUX_REBOOT_MAGIC[12]$/ || 292 $2 !~ "NLA_TYPE_MASK" && 293 $2 ~ /^(NETLINK|NLM|NLMSG|NLA|IFA|IFAN|RT|RTCF|RTN|RTPROT|RTNH|ARPHRD|ETH_P)_/ || 294 $2 ~ /^SIOC/ || 295 $2 ~ /^TIOC/ || 296 $2 !~ "RTF_BITS" && 297 $2 ~ /^(IFF|IFT|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ || 298 $2 ~ /^BIOC/ || 299 $2 ~ /^RUSAGE_(SELF|CHILDREN|THREAD)/ || 300 $2 ~ /^RLIMIT_(AS|CORE|CPU|DATA|FSIZE|NOFILE|STACK)|RLIM_INFINITY/ || 301 $2 ~ /^PRIO_(PROCESS|PGRP|USER)/ || 302 $2 ~ /^CLONE_[A-Z_]+/ || 303 $2 !~ /^(BPF_TIMEVAL)$/ && 304 $2 ~ /^(BPF|DLT)_/ || 305 $2 !~ "WMESGLEN" && 306 $2 ~ /^W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", $2, $2)} 307 $2 ~ /^__WCOREFLAG$/ {next} 308 $2 ~ /^__W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", substr($2,3), $2)} 309 310 {next} 311 ' | sort 312 313 echo ')' 314 ) >_const.go 315 316 # Pull out the error names for later. 317 errors=$( 318 echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags | 319 awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' | 320 sort 321 ) 322 323 # Pull out the signal names for later. 324 signals=$( 325 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags | 326 awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' | 327 egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' | 328 sort 329 ) 330 331 # Again, writing regexps to a file. 332 echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags | 333 awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print "^\t" $2 "[ \t]*=" }' | 334 sort >_error.grep 335 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags | 336 awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' | 337 egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' | 338 sort >_signal.grep 339 340 echo '// mkerrors.sh' "$@" 341 echo '// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT' 342 echo 343 go tool cgo -godefs -- "$@" _const.go >_error.out 344 cat _error.out | grep -vf _error.grep | grep -vf _signal.grep 345 echo 346 echo '// Errors' 347 echo 'const (' 348 cat _error.out | grep -f _error.grep | sed 's/=\(.*\)/= Errno(\1)/' 349 echo ')' 350 351 echo 352 echo '// Signals' 353 echo 'const (' 354 cat _error.out | grep -f _signal.grep | sed 's/=\(.*\)/= Signal(\1)/' 355 echo ')' 356 357 # Run C program to print error and syscall strings. 358 ( 359 echo -E " 360 #include <stdio.h> 361 #include <stdlib.h> 362 #include <errno.h> 363 #include <ctype.h> 364 #include <string.h> 365 #include <signal.h> 366 367 #define nelem(x) (sizeof(x)/sizeof((x)[0])) 368 369 enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below 370 371 int errors[] = { 372 " 373 for i in $errors 374 do 375 echo -E ' '$i, 376 done 377 378 echo -E " 379 }; 380 381 int signals[] = { 382 " 383 for i in $signals 384 do 385 echo -E ' '$i, 386 done 387 388 # Use -E because on some systems bash builtin interprets \n itself. 389 echo -E ' 390 }; 391 392 static int 393 intcmp(const void *a, const void *b) 394 { 395 return *(int*)a - *(int*)b; 396 } 397 398 int 399 main(void) 400 { 401 int i, j, e; 402 char buf[1024], *p; 403 404 printf("\n\n// Error table\n"); 405 printf("var errors = [...]string {\n"); 406 qsort(errors, nelem(errors), sizeof errors[0], intcmp); 407 for(i=0; i<nelem(errors); i++) { 408 e = errors[i]; 409 if(i > 0 && errors[i-1] == e) 410 continue; 411 strcpy(buf, strerror(e)); 412 // lowercase first letter: Bad -> bad, but STREAM -> STREAM. 413 if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z) 414 buf[0] += a - A; 415 printf("\t%d: \"%s\",\n", e, buf); 416 } 417 printf("}\n\n"); 418 419 printf("\n\n// Signal table\n"); 420 printf("var signals = [...]string {\n"); 421 qsort(signals, nelem(signals), sizeof signals[0], intcmp); 422 for(i=0; i<nelem(signals); i++) { 423 e = signals[i]; 424 if(i > 0 && signals[i-1] == e) 425 continue; 426 strcpy(buf, strsignal(e)); 427 // lowercase first letter: Bad -> bad, but STREAM -> STREAM. 428 if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z) 429 buf[0] += a - A; 430 // cut trailing : number. 431 p = strrchr(buf, ":"[0]); 432 if(p) 433 *p = '\0'; 434 printf("\t%d: \"%s\",\n", e, buf); 435 } 436 printf("}\n\n"); 437 438 return 0; 439 } 440 441 ' 442 ) >_errors.c 443 444 $CC $ccflags -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.go _error.grep _signal.grep _error.out 445
