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 10unset LANG 11export LC_ALL=C 12export LC_CTYPE=C 13 14CC=${CC:-gcc} 15 16if [[ "$GOOS" -eq "solaris" ]]; then 17 # Assumes GNU versions of utilities in PATH. 18 export PATH=/usr/gnu/bin:$PATH 19fi 20 21uname=$(uname) 22 23includes_AIX=' 24#include <net/if.h> 25#include <net/netopt.h> 26#include <netinet/ip_mroute.h> 27#include <sys/mman.h> 28#include <sys/protosw.h> 29#include <sys/ptrace.h> 30#include <sys/stropts.h> 31#include <termios.h> 32' 33 34includes_Darwin=' 35#define _DARWIN_C_SOURCE 36#define KERNEL 37#define _DARWIN_USE_64_BIT_INODE 38#include <sys/types.h> 39#include <sys/event.h> 40#include <sys/ptrace.h> 41#include <sys/socket.h> 42#include <sys/sockio.h> 43#include <sys/sysctl.h> 44#include <sys/mman.h> 45#include <sys/wait.h> 46#include <net/bpf.h> 47#include <net/if.h> 48#include <net/if_types.h> 49#include <net/route.h> 50#include <netinet/in.h> 51#include <netinet/ip.h> 52#include <netinet/ip_mroute.h> 53#include <termios.h> 54' 55 56includes_DragonFly=' 57#include <sys/types.h> 58#include <sys/event.h> 59#include <sys/socket.h> 60#include <sys/sockio.h> 61#include <sys/sysctl.h> 62#include <sys/mman.h> 63#include <sys/wait.h> 64#include <sys/ioctl.h> 65#include <net/bpf.h> 66#include <net/if.h> 67#include <net/if_types.h> 68#include <net/route.h> 69#include <netinet/in.h> 70#include <termios.h> 71#include <netinet/ip.h> 72#include <net/ip_mroute/ip_mroute.h> 73' 74 75includes_FreeBSD=' 76#include <sys/param.h> 77#include <sys/types.h> 78#include <sys/event.h> 79#include <sys/socket.h> 80#include <sys/sockio.h> 81#include <sys/sysctl.h> 82#include <sys/mman.h> 83#include <sys/wait.h> 84#include <sys/ioctl.h> 85#include <net/bpf.h> 86#include <net/if.h> 87#include <net/if_types.h> 88#include <net/route.h> 89#include <netinet/in.h> 90#include <termios.h> 91#include <netinet/ip.h> 92#include <netinet/ip_mroute.h> 93 94#if __FreeBSD__ >= 10 95#define IFT_CARP 0xf8 // IFT_CARP is deprecated in FreeBSD 10 96#undef SIOCAIFADDR 97#define SIOCAIFADDR _IOW(105, 26, struct oifaliasreq) // ifaliasreq contains if_data 98#undef SIOCSIFPHYADDR 99#define SIOCSIFPHYADDR _IOW(105, 70, struct oifaliasreq) // ifaliasreq contains if_data 100#endif 101' 102 103includes_Linux=' 104#define _LARGEFILE_SOURCE 105#define _LARGEFILE64_SOURCE 106#ifndef __LP64__ 107#define _FILE_OFFSET_BITS 64 108#endif 109#define _GNU_SOURCE 110 111#include <bits/sockaddr.h> 112#include <sys/epoll.h> 113#include <sys/inotify.h> 114#include <sys/ioctl.h> 115#include <sys/mman.h> 116#include <sys/mount.h> 117#include <sys/prctl.h> 118#include <sys/stat.h> 119#include <sys/types.h> 120#include <sys/time.h> 121#include <sys/socket.h> 122#include <linux/if.h> 123#include <linux/if_arp.h> 124#include <linux/if_ether.h> 125#include <linux/if_tun.h> 126#include <linux/if_packet.h> 127#include <linux/if_addr.h> 128#include <linux/filter.h> 129#include <linux/netlink.h> 130#include <linux/reboot.h> 131#include <linux/rtnetlink.h> 132#include <linux/ptrace.h> 133#include <linux/sched.h> 134#include <linux/wait.h> 135#include <linux/icmpv6.h> 136#include <net/route.h> 137#include <termios.h> 138 139#ifndef MSG_FASTOPEN 140#define MSG_FASTOPEN 0x20000000 141#endif 142 143#ifndef PTRACE_GETREGS 144#define PTRACE_GETREGS 0xc 145#endif 146 147#ifndef PTRACE_SETREGS 148#define PTRACE_SETREGS 0xd 149#endif 150' 151 152includes_NetBSD=' 153#include <sys/types.h> 154#include <sys/param.h> 155#include <sys/event.h> 156#include <sys/mman.h> 157#include <sys/socket.h> 158#include <sys/sockio.h> 159#include <sys/sysctl.h> 160#include <sys/termios.h> 161#include <sys/ttycom.h> 162#include <sys/wait.h> 163#include <net/bpf.h> 164#include <net/if.h> 165#include <net/if_types.h> 166#include <net/route.h> 167#include <netinet/in.h> 168#include <netinet/in_systm.h> 169#include <netinet/ip.h> 170#include <netinet/ip_mroute.h> 171#include <netinet/if_ether.h> 172 173// Needed since <sys/param.h> refers to it... 174#define schedppq 1 175' 176 177includes_OpenBSD=' 178#include <sys/types.h> 179#include <sys/param.h> 180#include <sys/event.h> 181#include <sys/mman.h> 182#include <sys/socket.h> 183#include <sys/sockio.h> 184#include <sys/sysctl.h> 185#include <sys/termios.h> 186#include <sys/ttycom.h> 187#include <sys/wait.h> 188#include <net/bpf.h> 189#include <net/if.h> 190#include <net/if_types.h> 191#include <net/if_var.h> 192#include <net/route.h> 193#include <netinet/in.h> 194#include <netinet/in_systm.h> 195#include <netinet/ip.h> 196#include <netinet/ip_mroute.h> 197#include <netinet/if_ether.h> 198#include <net/if_bridge.h> 199 200// We keep some constants not supported in OpenBSD 5.5 and beyond for 201// the promise of compatibility. 202#define EMUL_ENABLED 0x1 203#define EMUL_NATIVE 0x2 204#define IPV6_FAITH 0x1d 205#define IPV6_OPTIONS 0x1 206#define IPV6_RTHDR_STRICT 0x1 207#define IPV6_SOCKOPT_RESERVED1 0x3 208#define SIOCGIFGENERIC 0xc020693a 209#define SIOCSIFGENERIC 0x80206939 210#define WALTSIG 0x4 211' 212 213includes_SunOS=' 214#include <limits.h> 215#include <sys/types.h> 216#include <sys/socket.h> 217#include <sys/sockio.h> 218#include <sys/mman.h> 219#include <sys/wait.h> 220#include <sys/ioctl.h> 221#include <net/bpf.h> 222#include <net/if.h> 223#include <net/if_arp.h> 224#include <net/if_types.h> 225#include <net/route.h> 226#include <netinet/in.h> 227#include <termios.h> 228#include <netinet/ip.h> 229#include <netinet/ip_mroute.h> 230' 231 232includes=' 233#include <sys/types.h> 234#include <sys/file.h> 235#include <fcntl.h> 236#include <dirent.h> 237#include <sys/socket.h> 238#include <netinet/in.h> 239#include <netinet/ip.h> 240#include <netinet/ip6.h> 241#include <netinet/tcp.h> 242#include <errno.h> 243#include <sys/signal.h> 244#include <signal.h> 245#include <sys/resource.h> 246' 247 248ccflags="$@" 249 250# Write go tool cgo -godefs input. 251( 252 echo package syscall 253 echo 254 echo '/*' 255 indirect="includes_$(uname)" 256 echo "${!indirect} $includes" 257 echo '*/' 258 echo 'import "C"' 259 echo 260 echo 'const (' 261 262 # The gcc command line prints all the #defines 263 # it encounters while processing the input 264 echo "${!indirect} $includes" | $CC -x c - -E -dM $ccflags | 265 awk ' 266 $1 != "#define" || $2 ~ /\(/ || $3 == "" {next} 267 268 $2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next} # 386 registers 269 $2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next} 270 $2 ~ /^(SCM_SRCRT)$/ {next} 271 $2 ~ /^(MAP_FAILED)$/ {next} 272 $2 ~ /^ELF_.*$/ {next} # <asm/elf.h> contains ELF_ARCH, etc. 273 274 $2 !~ /^ETH_/ && 275 $2 !~ /^EPROC_/ && 276 $2 !~ /^EQUIV_/ && 277 $2 !~ /^EXPR_/ && 278 $2 ~ /^E[A-Z0-9_]+$/ || 279 $2 ~ /^B[0-9_]+$/ || 280 $2 ~ /^V[A-Z0-9]+$/ || 281 $2 ~ /^CS[A-Z0-9]/ || 282 $2 ~ /^I(SIG|CANON|CRNL|EXTEN|MAXBEL|STRIP|UTF8)$/ || 283 $2 ~ /^IGN/ || 284 $2 ~ /^IX(ON|ANY|OFF)$/ || 285 $2 ~ /^IN(LCR|PCK)$/ || 286 $2 ~ /(^FLU?SH)|(FLU?SH$)/ || 287 $2 ~ /^C(LOCAL|READ)$/ || 288 $2 == "BRKINT" || 289 $2 == "HUPCL" || 290 $2 == "PENDIN" || 291 $2 == "TOSTOP" || 292 $2 ~ /^PAR/ || 293 $2 ~ /^SIG[^_]/ || 294 $2 ~ /^O[CNPFP][A-Z]+[^_][A-Z]+$/ || 295 $2 ~ /^IN_/ || 296 $2 ~ /^LOCK_(SH|EX|NB|UN)$/ || 297 $2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|EVFILT|NOTE|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ || 298 $2 == "ICMPV6_FILTER" || 299 $2 == "SOMAXCONN" || 300 $2 == "NAME_MAX" || 301 $2 == "IFNAMSIZ" || 302 $2 ~ /^CTL_(MAXNAME|NET|QUERY)$/ || 303 $2 ~ /^SYSCTL_VERS/ || 304 $2 ~ /^(MS|MNT)_/ || 305 $2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ || 306 $2 ~ /^(O|F|FD|NAME|S|PTRACE|PT)_/ || 307 $2 ~ /^LINUX_REBOOT_CMD_/ || 308 $2 ~ /^LINUX_REBOOT_MAGIC[12]$/ || 309 $2 !~ "NLA_TYPE_MASK" && 310 $2 ~ /^(NETLINK|NLM|NLMSG|NLA|IFA|IFAN|RT|RTCF|RTN|RTPROT|RTNH|ARPHRD|ETH_P)_/ || 311 $2 ~ /^SIOC/ || 312 $2 ~ /^TIOC/ || 313 $2 !~ "RTF_BITS" && 314 $2 ~ /^(IFF|IFT|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ || 315 $2 ~ /^BIOC/ || 316 $2 ~ /^RUSAGE_(SELF|CHILDREN|THREAD)/ || 317 $2 ~ /^RLIMIT_(AS|CORE|CPU|DATA|FSIZE|NOFILE|STACK)|RLIM_INFINITY/ || 318 $2 ~ /^PRIO_(PROCESS|PGRP|USER)/ || 319 $2 ~ /^CLONE_[A-Z_]+/ || 320 $2 !~ /^(BPF_TIMEVAL)$/ && 321 $2 ~ /^(BPF|DLT)_/ || 322 $2 !~ "WMESGLEN" && 323 $2 ~ /^W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", $2, $2)} 324 $2 ~ /^__WCOREFLAG$/ {next} 325 $2 ~ /^__W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", substr($2,3), $2)} 326 327 {next} 328 ' | sort 329 330 echo ')' 331) >_const.go 332 333# Pull out the error names for later. 334errors=$( 335 echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags | 336 awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' | 337 sort 338) 339 340# Pull out the signal names for later. 341signals=$( 342 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags | 343 awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' | 344 egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' | 345 sort 346) 347 348# Again, writing regexps to a file. 349echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags | 350 awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print "^\t" $2 "[ \t]*=" }' | 351 sort >_error.grep 352echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags | 353 awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' | 354 egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' | 355 sort >_signal.grep 356 357echo '// mkerrors.sh' "$@" 358echo '// Code generated by the command above; DO NOT EDIT.' 359echo 360go tool cgo -godefs -- "$@" _const.go >_error.out 361cat _error.out | grep -vf _error.grep | grep -vf _signal.grep 362echo 363echo '// Errors' 364echo 'const (' 365cat _error.out | grep -f _error.grep | sed 's/=\(.*\)/= Errno(\1)/' 366echo ')' 367 368echo 369echo '// Signals' 370echo 'const (' 371cat _error.out | grep -f _signal.grep | sed 's/=\(.*\)/= Signal(\1)/' 372echo ')' 373 374# Run C program to print error and syscall strings. 375( 376 echo -E " 377#include <stdio.h> 378#include <stdlib.h> 379#include <errno.h> 380#include <ctype.h> 381#include <string.h> 382#include <signal.h> 383 384#define nelem(x) (sizeof(x)/sizeof((x)[0])) 385 386enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below 387 388int errors[] = { 389" 390 for i in $errors 391 do 392 echo -E ' '$i, 393 done 394 395 echo -E " 396}; 397 398int signals[] = { 399" 400 for i in $signals 401 do 402 echo -E ' '$i, 403 done 404 405 # Use -E because on some systems bash builtin interprets \n itself. 406 echo -E ' 407}; 408 409static int 410intcmp(const void *a, const void *b) 411{ 412 return *(int*)a - *(int*)b; 413} 414 415int 416main(void) 417{ 418 int i, j, e; 419 char buf[1024], *p; 420 421 printf("\n\n// Error table\n"); 422 printf("var errors = [...]string {\n"); 423 qsort(errors, nelem(errors), sizeof errors[0], intcmp); 424 for(i=0; i<nelem(errors); i++) { 425 e = errors[i]; 426 if(i > 0 && errors[i-1] == e) 427 continue; 428 strcpy(buf, strerror(e)); 429 // lowercase first letter: Bad -> bad, but STREAM -> STREAM. 430 if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z) 431 buf[0] += a - A; 432 printf("\t%d: \"%s\",\n", e, buf); 433 } 434 printf("}\n\n"); 435 436 printf("\n\n// Signal table\n"); 437 printf("var signals = [...]string {\n"); 438 qsort(signals, nelem(signals), sizeof signals[0], intcmp); 439 for(i=0; i<nelem(signals); i++) { 440 e = signals[i]; 441 if(i > 0 && signals[i-1] == e) 442 continue; 443 strcpy(buf, strsignal(e)); 444 // lowercase first letter: Bad -> bad, but STREAM -> STREAM. 445 if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z) 446 buf[0] += a - A; 447 // cut trailing : number. 448 p = strrchr(buf, ":"[0]); 449 if(p) 450 *p = '\0'; 451 printf("\t%d: \"%s\",\n", e, buf); 452 } 453 printf("}\n\n"); 454 455 return 0; 456} 457 458' 459) >_errors.c 460 461$CC $ccflags -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.go _error.grep _signal.grep _error.out 462