vendor/golang.org/x/sys/unix/mkerrors.sh

   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 if test -z "$GOARCH" -o -z "$GOOS"; then
  15         echo 1>&2 "GOARCH or GOOS not defined in environment"
  16         exit 1
  17 fi
  18
  19 # Check that we are using the new build system if we should
  20 if [[ "$GOOS" -eq "linux" ]] && [[ "$GOARCH" != "sparc64" ]]; then
  21         if [[ "$GOLANG_SYS_BUILD" -ne "docker" ]]; then
  22                 echo 1>&2 "In the new build system, mkerrors should not be called directly."
  23                 echo 1>&2 "See README.md"
  24                 exit 1
  25         fi
  26 fi
  27
  28 CC=${CC:-cc}
  29
  30 if [[ "$GOOS" -eq "solaris" ]]; then
  31         # Assumes GNU versions of utilities in PATH.
  32         export PATH=/usr/gnu/bin:$PATH
  33 fi
  34
  35 uname=$(uname)
  36
  37 includes_Darwin='
  38 #define _DARWIN_C_SOURCE
  39 #define KERNEL
  40 #define _DARWIN_USE_64_BIT_INODE
  41 #include <sys/types.h>
  42 #include <sys/event.h>
  43 #include <sys/ptrace.h>
  44 #include <sys/socket.h>
  45 #include <sys/sockio.h>
  46 #include <sys/sysctl.h>
  47 #include <sys/mman.h>
  48 #include <sys/wait.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 <netinet/ip.h>
  55 #include <termios.h>
  56 '
  57
  58 includes_DragonFly='
  59 #include <sys/types.h>
  60 #include <sys/event.h>
  61 #include <sys/socket.h>
  62 #include <sys/sockio.h>
  63 #include <sys/sysctl.h>
  64 #include <sys/mman.h>
  65 #include <sys/wait.h>
  66 #include <sys/ioctl.h>
  67 #include <net/bpf.h>
  68 #include <net/if.h>
  69 #include <net/if_types.h>
  70 #include <net/route.h>
  71 #include <netinet/in.h>
  72 #include <termios.h>
  73 #include <netinet/ip.h>
  74 #include <net/ip_mroute/ip_mroute.h>
  75 '
  76
  77 includes_FreeBSD='
  78 #include <sys/param.h>
  79 #include <sys/types.h>
  80 #include <sys/event.h>
  81 #include <sys/socket.h>
  82 #include <sys/sockio.h>
  83 #include <sys/sysctl.h>
  84 #include <sys/mman.h>
  85 #include <sys/wait.h>
  86 #include <sys/ioctl.h>
  87 #include <net/bpf.h>
  88 #include <net/if.h>
  89 #include <net/if_types.h>
  90 #include <net/route.h>
  91 #include <netinet/in.h>
  92 #include <termios.h>
  93 #include <netinet/ip.h>
  94 #include <netinet/ip_mroute.h>
  95 #include <sys/extattr.h>
  96
  97 #if __FreeBSD__ >= 10
  98 #define IFT_CARP        0xf8    // IFT_CARP is deprecated in FreeBSD 10
  99 #undef SIOCAIFADDR
 100 #define SIOCAIFADDR     _IOW(105, 26, struct oifaliasreq)       // ifaliasreq contains if_data
 101 #undef SIOCSIFPHYADDR
 102 #define SIOCSIFPHYADDR  _IOW(105, 70, struct oifaliasreq)       // ifaliasreq contains if_data
 103 #endif
 104 '
 105
 106 includes_Linux='
 107 #define _LARGEFILE_SOURCE
 108 #define _LARGEFILE64_SOURCE
 109 #ifndef __LP64__
 110 #define _FILE_OFFSET_BITS 64
 111 #endif
 112 #define _GNU_SOURCE
 113
 114 // <sys/ioctl.h> is broken on powerpc64, as it fails to include definitions of
 115 // these structures. We just include them copied from <bits/termios.h>.
 116 #if defined(__powerpc__)
 117 struct sgttyb {
 118         char    sg_ispeed;
 119         char    sg_ospeed;
 120         char    sg_erase;
 121         char    sg_kill;
 122         short   sg_flags;
 123 };
 124
 125 struct tchars {
 126         char    t_intrc;
 127         char    t_quitc;
 128         char    t_startc;
 129         char    t_stopc;
 130         char    t_eofc;
 131         char    t_brkc;
 132 };
 133
 134 struct ltchars {
 135         char    t_suspc;
 136         char    t_dsuspc;
 137         char    t_rprntc;
 138         char    t_flushc;
 139         char    t_werasc;
 140         char    t_lnextc;
 141 };
 142 #endif
 143
 144 #include <bits/sockaddr.h>
 145 #include <sys/epoll.h>
 146 #include <sys/inotify.h>
 147 #include <sys/ioctl.h>
 148 #include <sys/mman.h>
 149 #include <sys/mount.h>
 150 #include <sys/prctl.h>
 151 #include <sys/stat.h>
 152 #include <sys/types.h>
 153 #include <sys/time.h>
 154 #include <sys/socket.h>
 155 #include <linux/if.h>
 156 #include <linux/if_alg.h>
 157 #include <linux/if_arp.h>
 158 #include <linux/if_ether.h>
 159 #include <linux/if_tun.h>
 160 #include <linux/if_packet.h>
 161 #include <linux/if_addr.h>
 162 #include <linux/falloc.h>
 163 #include <linux/filter.h>
 164 #include <linux/fs.h>
 165 #include <linux/netlink.h>
 166 #include <linux/random.h>
 167 #include <linux/reboot.h>
 168 #include <linux/rtnetlink.h>
 169 #include <linux/ptrace.h>
 170 #include <linux/sched.h>
 171 #include <linux/wait.h>
 172 #include <linux/icmpv6.h>
 173 #include <linux/serial.h>
 174 #include <linux/can.h>
 175 #include <linux/vm_sockets.h>
 176 #include <net/route.h>
 177 #include <asm/termbits.h>
 178
 179 #ifndef MSG_FASTOPEN
 180 #define MSG_FASTOPEN    0x20000000
 181 #endif
 182
 183 #ifndef PTRACE_GETREGS
 184 #define PTRACE_GETREGS  0xc
 185 #endif
 186
 187 #ifndef PTRACE_SETREGS
 188 #define PTRACE_SETREGS  0xd
 189 #endif
 190
 191 #ifndef SOL_NETLINK
 192 #define SOL_NETLINK     270
 193 #endif
 194
 195 #ifdef SOL_BLUETOOTH
 196 // SPARC includes this in /usr/include/sparc64-linux-gnu/bits/socket.h
 197 // but it is already in bluetooth_linux.go
 198 #undef SOL_BLUETOOTH
 199 #endif
 200
 201 // Certain constants are missing from the fs/crypto UAPI
 202 #define FS_KEY_DESC_PREFIX              "fscrypt:"
 203 #define FS_KEY_DESC_PREFIX_SIZE         8
 204 #define FS_MAX_KEY_SIZE                 64
 205 '
 206
 207 includes_NetBSD='
 208 #include <sys/types.h>
 209 #include <sys/param.h>
 210 #include <sys/event.h>
 211 #include <sys/mman.h>
 212 #include <sys/socket.h>
 213 #include <sys/sockio.h>
 214 #include <sys/sysctl.h>
 215 #include <sys/termios.h>
 216 #include <sys/ttycom.h>
 217 #include <sys/wait.h>
 218 #include <net/bpf.h>
 219 #include <net/if.h>
 220 #include <net/if_types.h>
 221 #include <net/route.h>
 222 #include <netinet/in.h>
 223 #include <netinet/in_systm.h>
 224 #include <netinet/ip.h>
 225 #include <netinet/ip_mroute.h>
 226 #include <netinet/if_ether.h>
 227
 228 // Needed since <sys/param.h> refers to it...
 229 #define schedppq 1
 230 '
 231
 232 includes_OpenBSD='
 233 #include <sys/types.h>
 234 #include <sys/param.h>
 235 #include <sys/event.h>
 236 #include <sys/mman.h>
 237 #include <sys/socket.h>
 238 #include <sys/sockio.h>
 239 #include <sys/sysctl.h>
 240 #include <sys/termios.h>
 241 #include <sys/ttycom.h>
 242 #include <sys/wait.h>
 243 #include <net/bpf.h>
 244 #include <net/if.h>
 245 #include <net/if_types.h>
 246 #include <net/if_var.h>
 247 #include <net/route.h>
 248 #include <netinet/in.h>
 249 #include <netinet/in_systm.h>
 250 #include <netinet/ip.h>
 251 #include <netinet/ip_mroute.h>
 252 #include <netinet/if_ether.h>
 253 #include <net/if_bridge.h>
 254
 255 // We keep some constants not supported in OpenBSD 5.5 and beyond for
 256 // the promise of compatibility.
 257 #define EMUL_ENABLED            0x1
 258 #define EMUL_NATIVE             0x2
 259 #define IPV6_FAITH              0x1d
 260 #define IPV6_OPTIONS            0x1
 261 #define IPV6_RTHDR_STRICT       0x1
 262 #define IPV6_SOCKOPT_RESERVED1  0x3
 263 #define SIOCGIFGENERIC          0xc020693a
 264 #define SIOCSIFGENERIC          0x80206939
 265 #define WALTSIG                 0x4
 266 '
 267
 268 includes_SunOS='
 269 #include <limits.h>
 270 #include <sys/types.h>
 271 #include <sys/socket.h>
 272 #include <sys/sockio.h>
 273 #include <sys/mman.h>
 274 #include <sys/wait.h>
 275 #include <sys/ioctl.h>
 276 #include <net/bpf.h>
 277 #include <net/if.h>
 278 #include <net/if_arp.h>
 279 #include <net/if_types.h>
 280 #include <net/route.h>
 281 #include <netinet/in.h>
 282 #include <termios.h>
 283 #include <netinet/ip.h>
 284 #include <netinet/ip_mroute.h>
 285 '
 286
 287
 288 includes='
 289 #include <sys/types.h>
 290 #include <sys/file.h>
 291 #include <fcntl.h>
 292 #include <dirent.h>
 293 #include <sys/socket.h>
 294 #include <netinet/in.h>
 295 #include <netinet/ip.h>
 296 #include <netinet/ip6.h>
 297 #include <netinet/tcp.h>
 298 #include <errno.h>
 299 #include <sys/signal.h>
 300 #include <signal.h>
 301 #include <sys/resource.h>
 302 #include <time.h>
 303 '
 304 ccflags="$@"
 305
 306 # Write go tool cgo -godefs input.
 307 (
 308         echo package unix
 309         echo
 310         echo '/*'
 311         indirect="includes_$(uname)"
 312         echo "${!indirect} $includes"
 313         echo '*/'
 314         echo 'import "C"'
 315         echo 'import "syscall"'
 316         echo
 317         echo 'const ('
 318
 319         # The gcc command line prints all the #defines
 320         # it encounters while processing the input
 321         echo "${!indirect} $includes" | $CC -x c - -E -dM $ccflags |
 322         awk '
 323                 $1 != "#define" || $2 ~ /\(/ || $3 == "" {next}
 324
 325                 $2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next}  # 386 registers
 326                 $2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
 327                 $2 ~ /^(SCM_SRCRT)$/ {next}
 328                 $2 ~ /^(MAP_FAILED)$/ {next}
 329                 $2 ~ /^ELF_.*$/ {next}# <asm/elf.h> contains ELF_ARCH, etc.
 330
 331                 $2 ~ /^EXTATTR_NAMESPACE_NAMES/ ||
 332                 $2 ~ /^EXTATTR_NAMESPACE_[A-Z]+_STRING/ {next}
 333
 334                 $2 !~ /^ETH_/ &&
 335                 $2 !~ /^EPROC_/ &&
 336                 $2 !~ /^EQUIV_/ &&
 337                 $2 !~ /^EXPR_/ &&
 338                 $2 ~ /^E[A-Z0-9_]+$/ ||
 339                 $2 ~ /^B[0-9_]+$/ ||
 340                 $2 == "BOTHER" ||
 341                 $2 ~ /^CI?BAUD(EX)?$/ ||
 342                 $2 == "IBSHIFT" ||
 343                 $2 ~ /^V[A-Z0-9]+$/ ||
 344                 $2 ~ /^CS[A-Z0-9]/ ||
 345                 $2 ~ /^I(SIG|CANON|CRNL|UCLC|EXTEN|MAXBEL|STRIP|UTF8)$/ ||
 346                 $2 ~ /^IGN/ ||
 347                 $2 ~ /^IX(ON|ANY|OFF)$/ ||
 348                 $2 ~ /^IN(LCR|PCK)$/ ||
 349                 $2 ~ /(^FLU?SH)|(FLU?SH$)/ ||
 350                 $2 ~ /^C(LOCAL|READ|MSPAR|RTSCTS)$/ ||
 351                 $2 == "BRKINT" ||
 352                 $2 == "HUPCL" ||
 353                 $2 == "PENDIN" ||
 354                 $2 == "TOSTOP" ||
 355                 $2 == "XCASE" ||
 356                 $2 == "ALTWERASE" ||
 357                 $2 == "NOKERNINFO" ||
 358                 $2 ~ /^PAR/ ||
 359                 $2 ~ /^SIG[^_]/ ||
 360                 $2 ~ /^O[CNPFPL][A-Z]+[^_][A-Z]+$/ ||
 361                 $2 ~ /^(NL|CR|TAB|BS|VT|FF)DLY$/ ||
 362                 $2 ~ /^(NL|CR|TAB|BS|VT|FF)[0-9]$/ ||
 363                 $2 ~ /^O?XTABS$/ ||
 364                 $2 ~ /^TC[IO](ON|OFF)$/ ||
 365                 $2 ~ /^IN_/ ||
 366                 $2 ~ /^LOCK_(SH|EX|NB|UN)$/ ||
 367                 $2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|EVFILT|NOTE|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ ||
 368                 $2 ~ /^FALLOC_/ ||
 369                 $2 == "ICMPV6_FILTER" ||
 370                 $2 == "SOMAXCONN" ||
 371                 $2 == "NAME_MAX" ||
 372                 $2 == "IFNAMSIZ" ||
 373                 $2 ~ /^CTL_(MAXNAME|NET|QUERY)$/ ||
 374                 $2 ~ /^SYSCTL_VERS/ ||
 375                 $2 ~ /^(MS|MNT)_/ ||
 376                 $2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ ||
 377                 $2 ~ /^(O|F|FD|NAME|S|PTRACE|PT)_/ ||
 378                 $2 ~ /^LINUX_REBOOT_CMD_/ ||
 379                 $2 ~ /^LINUX_REBOOT_MAGIC[12]$/ ||
 380                 $2 !~ "NLA_TYPE_MASK" &&
 381                 $2 ~ /^(NETLINK|NLM|NLMSG|NLA|IFA|IFAN|RT|RTCF|RTN|RTPROT|RTNH|ARPHRD|ETH_P)_/ ||
 382                 $2 ~ /^SIOC/ ||
 383                 $2 ~ /^TIOC/ ||
 384                 $2 ~ /^TCGET/ ||
 385                 $2 ~ /^TCSET/ ||
 386                 $2 ~ /^TC(FLSH|SBRKP?|XONC)$/ ||
 387                 $2 !~ "RTF_BITS" &&
 388                 $2 ~ /^(IFF|IFT|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ ||
 389                 $2 ~ /^BIOC/ ||
 390                 $2 ~ /^RUSAGE_(SELF|CHILDREN|THREAD)/ ||
 391                 $2 ~ /^RLIMIT_(AS|CORE|CPU|DATA|FSIZE|NOFILE|STACK)|RLIM_INFINITY/ ||
 392                 $2 ~ /^PRIO_(PROCESS|PGRP|USER)/ ||
 393                 $2 ~ /^CLONE_[A-Z_]+/ ||
 394                 $2 !~ /^(BPF_TIMEVAL)$/ &&
 395                 $2 ~ /^(BPF|DLT)_/ ||
 396                 $2 ~ /^CLOCK_/ ||
 397                 $2 ~ /^CAN_/ ||
 398                 $2 ~ /^ALG_/ ||
 399                 $2 ~ /^FS_(POLICY_FLAGS|KEY_DESC|ENCRYPTION_MODE|[A-Z0-9_]+_KEY_SIZE|IOC_(GET|SET)_ENCRYPTION)/ ||
 400                 $2 ~ /^GRND_/ ||
 401                 $2 ~ /^SPLICE_/ ||
 402                 $2 ~ /^(VM|VMADDR)_/ ||
 403                 $2 !~ "WMESGLEN" &&
 404                 $2 ~ /^W[A-Z0-9]+$/ ||
 405                 $2 ~ /^BLK[A-Z]*(GET$|SET$|BUF$|PART$|SIZE)/ {printf("\t%s = C.%s\n", $2, $2)}
 406                 $2 ~ /^__WCOREFLAG$/ {next}
 407                 $2 ~ /^__W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", substr($2,3), $2)}
 408
 409                 {next}
 410         ' | sort
 411
 412         echo ')'
 413 ) >_const.go
 414
 415 # Pull out the error names for later.
 416 errors=$(
 417         echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
 418         awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' |
 419         sort
 420 )
 421
 422 # Pull out the signal names for later.
 423 signals=$(
 424         echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 425         awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
 426         egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
 427         sort
 428 )
 429
 430 # Again, writing regexps to a file.
 431 echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
 432         awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print "^\t" $2 "[ \t]*=" }' |
 433         sort >_error.grep
 434 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 435         awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
 436         egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
 437         sort >_signal.grep
 438
 439 echo '// mkerrors.sh' "$@"
 440 echo '// Code generated by the command above; see README.md. DO NOT EDIT.'
 441 echo
 442 echo "// +build ${GOARCH},${GOOS}"
 443 echo
 444 go tool cgo -godefs -- "$@" _const.go >_error.out
 445 cat _error.out | grep -vf _error.grep | grep -vf _signal.grep
 446 echo
 447 echo '// Errors'
 448 echo 'const ('
 449 cat _error.out | grep -f _error.grep | sed 's/=\(.*\)/= syscall.Errno(\1)/'
 450 echo ')'
 451
 452 echo
 453 echo '// Signals'
 454 echo 'const ('
 455 cat _error.out | grep -f _signal.grep | sed 's/=\(.*\)/= syscall.Signal(\1)/'
 456 echo ')'
 457
 458 # Run C program to print error and syscall strings.
 459 (
 460         echo -E "
 461 #include <stdio.h>
 462 #include <stdlib.h>
 463 #include <errno.h>
 464 #include <ctype.h>
 465 #include <string.h>
 466 #include <signal.h>
 467
 468 #define nelem(x) (sizeof(x)/sizeof((x)[0]))
 469
 470 enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below
 471
 472 int errors[] = {
 473 "
 474         for i in $errors
 475         do
 476                 echo -E '       '$i,
 477         done
 478
 479         echo -E "
 480 };
 481
 482 int signals[] = {
 483 "
 484         for i in $signals
 485         do
 486                 echo -E '       '$i,
 487         done
 488
 489         # Use -E because on some systems bash builtin interprets \n itself.
 490         echo -E '
 491 };
 492
 493 static int
 494 intcmp(const void *a, const void *b)
 495 {
 496         return *(int*)a - *(int*)b;
 497 }
 498
 499 int
 500 main(void)
 501 {
 502         int i, e;
 503         char buf[1024], *p;
 504
 505         printf("\n\n// Error table\n");
 506         printf("var errors = [...]string {\n");
 507         qsort(errors, nelem(errors), sizeof errors[0], intcmp);
 508         for(i=0; i<nelem(errors); i++) {
 509                 e = errors[i];
 510                 if(i > 0 && errors[i-1] == e)
 511                         continue;
 512                 strcpy(buf, strerror(e));
 513                 // lowercase first letter: Bad -> bad, but STREAM -> STREAM.
 514                 if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
 515                         buf[0] += a - A;
 516                 printf("\t%d: \"%s\",\n", e, buf);
 517         }
 518         printf("}\n\n");
 519
 520         printf("\n\n// Signal table\n");
 521         printf("var signals = [...]string {\n");
 522         qsort(signals, nelem(signals), sizeof signals[0], intcmp);
 523         for(i=0; i<nelem(signals); i++) {
 524                 e = signals[i];
 525                 if(i > 0 && signals[i-1] == e)
 526                         continue;
 527                 strcpy(buf, strsignal(e));
 528                 // lowercase first letter: Bad -> bad, but STREAM -> STREAM.
 529                 if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
 530                         buf[0] += a - A;
 531                 // cut trailing : number.
 532                 p = strrchr(buf, ":"[0]);
 533                 if(p)
 534                         *p = '\0';
 535                 printf("\t%d: \"%s\",\n", e, buf);
 536         }
 537         printf("}\n\n");
 538
 539         return 0;
 540 }
 541
 542 '
 543 ) >_errors.c
 544
 545 $CC $ccflags -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.go _error.grep _signal.grep _error.out