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 [[ "$GOOS" = "linux" ]] && [[ "$GOLANG_SYS_BUILD" != "docker" ]]; then
  21         echo 1>&2 "In the Docker based build system, mkerrors should not be called directly."
  22         echo 1>&2 "See README.md"
  23         exit 1
  24 fi
  25
  26 if [[ "$GOOS" = "aix" ]]; then
  27         CC=${CC:-gcc}
  28 else
  29         CC=${CC:-cc}
  30 fi
  31
  32 if [[ "$GOOS" = "solaris" ]]; then
  33         # Assumes GNU versions of utilities in PATH.
  34         export PATH=/usr/gnu/bin:$PATH
  35 fi
  36
  37 uname=$(uname)
  38
  39 includes_AIX='
  40 #include <net/if.h>
  41 #include <net/netopt.h>
  42 #include <netinet/ip_mroute.h>
  43 #include <sys/protosw.h>
  44 #include <sys/stropts.h>
  45 #include <sys/mman.h>
  46 #include <sys/poll.h>
  47 #include <sys/termio.h>
  48 #include <termios.h>
  49 #include <fcntl.h>
  50
  51 #define AF_LOCAL AF_UNIX
  52 '
  53
  54 includes_Darwin='
  55 #define _DARWIN_C_SOURCE
  56 #define KERNEL
  57 #define _DARWIN_USE_64_BIT_INODE
  58 #include <stdint.h>
  59 #include <sys/attr.h>
  60 #include <sys/types.h>
  61 #include <sys/event.h>
  62 #include <sys/ptrace.h>
  63 #include <sys/socket.h>
  64 #include <sys/sockio.h>
  65 #include <sys/sysctl.h>
  66 #include <sys/mman.h>
  67 #include <sys/mount.h>
  68 #include <sys/utsname.h>
  69 #include <sys/wait.h>
  70 #include <sys/xattr.h>
  71 #include <net/bpf.h>
  72 #include <net/if.h>
  73 #include <net/if_types.h>
  74 #include <net/route.h>
  75 #include <netinet/in.h>
  76 #include <netinet/ip.h>
  77 #include <termios.h>
  78 '
  79
  80 includes_DragonFly='
  81 #include <sys/types.h>
  82 #include <sys/event.h>
  83 #include <sys/socket.h>
  84 #include <sys/sockio.h>
  85 #include <sys/stat.h>
  86 #include <sys/sysctl.h>
  87 #include <sys/mman.h>
  88 #include <sys/mount.h>
  89 #include <sys/wait.h>
  90 #include <sys/ioctl.h>
  91 #include <net/bpf.h>
  92 #include <net/if.h>
  93 #include <net/if_types.h>
  94 #include <net/route.h>
  95 #include <netinet/in.h>
  96 #include <termios.h>
  97 #include <netinet/ip.h>
  98 #include <net/ip_mroute/ip_mroute.h>
  99 '
 100
 101 includes_FreeBSD='
 102 #include <sys/capsicum.h>
 103 #include <sys/param.h>
 104 #include <sys/types.h>
 105 #include <sys/event.h>
 106 #include <sys/socket.h>
 107 #include <sys/sockio.h>
 108 #include <sys/stat.h>
 109 #include <sys/sysctl.h>
 110 #include <sys/mman.h>
 111 #include <sys/mount.h>
 112 #include <sys/wait.h>
 113 #include <sys/ioctl.h>
 114 #include <net/bpf.h>
 115 #include <net/if.h>
 116 #include <net/if_types.h>
 117 #include <net/route.h>
 118 #include <netinet/in.h>
 119 #include <termios.h>
 120 #include <netinet/ip.h>
 121 #include <netinet/ip_mroute.h>
 122 #include <sys/extattr.h>
 123
 124 #if __FreeBSD__ >= 10
 125 #define IFT_CARP        0xf8    // IFT_CARP is deprecated in FreeBSD 10
 126 #undef SIOCAIFADDR
 127 #define SIOCAIFADDR     _IOW(105, 26, struct oifaliasreq)       // ifaliasreq contains if_data
 128 #undef SIOCSIFPHYADDR
 129 #define SIOCSIFPHYADDR  _IOW(105, 70, struct oifaliasreq)       // ifaliasreq contains if_data
 130 #endif
 131 '
 132
 133 includes_Linux='
 134 #define _LARGEFILE_SOURCE
 135 #define _LARGEFILE64_SOURCE
 136 #ifndef __LP64__
 137 #define _FILE_OFFSET_BITS 64
 138 #endif
 139 #define _GNU_SOURCE
 140
 141 // <sys/ioctl.h> is broken on powerpc64, as it fails to include definitions of
 142 // these structures. We just include them copied from <bits/termios.h>.
 143 #if defined(__powerpc__)
 144 struct sgttyb {
 145         char    sg_ispeed;
 146         char    sg_ospeed;
 147         char    sg_erase;
 148         char    sg_kill;
 149         short   sg_flags;
 150 };
 151
 152 struct tchars {
 153         char    t_intrc;
 154         char    t_quitc;
 155         char    t_startc;
 156         char    t_stopc;
 157         char    t_eofc;
 158         char    t_brkc;
 159 };
 160
 161 struct ltchars {
 162         char    t_suspc;
 163         char    t_dsuspc;
 164         char    t_rprntc;
 165         char    t_flushc;
 166         char    t_werasc;
 167         char    t_lnextc;
 168 };
 169 #endif
 170
 171 #include <bits/sockaddr.h>
 172 #include <sys/epoll.h>
 173 #include <sys/eventfd.h>
 174 #include <sys/inotify.h>
 175 #include <sys/ioctl.h>
 176 #include <sys/mman.h>
 177 #include <sys/mount.h>
 178 #include <sys/prctl.h>
 179 #include <sys/stat.h>
 180 #include <sys/types.h>
 181 #include <sys/time.h>
 182 #include <sys/signalfd.h>
 183 #include <sys/socket.h>
 184 #include <sys/xattr.h>
 185 #include <linux/errqueue.h>
 186 #include <linux/if.h>
 187 #include <linux/if_alg.h>
 188 #include <linux/if_arp.h>
 189 #include <linux/if_ether.h>
 190 #include <linux/if_ppp.h>
 191 #include <linux/if_tun.h>
 192 #include <linux/if_packet.h>
 193 #include <linux/if_addr.h>
 194 #include <linux/falloc.h>
 195 #include <linux/fanotify.h>
 196 #include <linux/filter.h>
 197 #include <linux/fs.h>
 198 #include <linux/kexec.h>
 199 #include <linux/keyctl.h>
 200 #include <linux/magic.h>
 201 #include <linux/memfd.h>
 202 #include <linux/module.h>
 203 #include <linux/netfilter/nfnetlink.h>
 204 #include <linux/netlink.h>
 205 #include <linux/net_namespace.h>
 206 #include <linux/perf_event.h>
 207 #include <linux/random.h>
 208 #include <linux/reboot.h>
 209 #include <linux/rtnetlink.h>
 210 #include <linux/ptrace.h>
 211 #include <linux/sched.h>
 212 #include <linux/seccomp.h>
 213 #include <linux/sockios.h>
 214 #include <linux/wait.h>
 215 #include <linux/icmpv6.h>
 216 #include <linux/serial.h>
 217 #include <linux/can.h>
 218 #include <linux/vm_sockets.h>
 219 #include <linux/taskstats.h>
 220 #include <linux/genetlink.h>
 221 #include <linux/watchdog.h>
 222 #include <linux/hdreg.h>
 223 #include <linux/rtc.h>
 224 #include <linux/if_xdp.h>
 225 #include <linux/cryptouser.h>
 226 #include <mtd/ubi-user.h>
 227 #include <net/route.h>
 228
 229 #if defined(__sparc__)
 230 // On sparc{,64}, the kernel defines struct termios2 itself which clashes with the
 231 // definition in glibc. As only the error constants are needed here, include the
 232 // generic termibits.h (which is included by termbits.h on sparc).
 233 #include <asm-generic/termbits.h>
 234 #else
 235 #include <asm/termbits.h>
 236 #endif
 237
 238 #ifndef MSG_FASTOPEN
 239 #define MSG_FASTOPEN    0x20000000
 240 #endif
 241
 242 #ifndef PTRACE_GETREGS
 243 #define PTRACE_GETREGS  0xc
 244 #endif
 245
 246 #ifndef PTRACE_SETREGS
 247 #define PTRACE_SETREGS  0xd
 248 #endif
 249
 250 #ifndef SOL_NETLINK
 251 #define SOL_NETLINK     270
 252 #endif
 253
 254 #ifdef SOL_BLUETOOTH
 255 // SPARC includes this in /usr/include/sparc64-linux-gnu/bits/socket.h
 256 // but it is already in bluetooth_linux.go
 257 #undef SOL_BLUETOOTH
 258 #endif
 259
 260 // Certain constants are missing from the fs/crypto UAPI
 261 #define FS_KEY_DESC_PREFIX              "fscrypt:"
 262 #define FS_KEY_DESC_PREFIX_SIZE         8
 263 #define FS_MAX_KEY_SIZE                 64
 264 '
 265
 266 includes_NetBSD='
 267 #include <sys/types.h>
 268 #include <sys/param.h>
 269 #include <sys/event.h>
 270 #include <sys/extattr.h>
 271 #include <sys/mman.h>
 272 #include <sys/mount.h>
 273 #include <sys/socket.h>
 274 #include <sys/sockio.h>
 275 #include <sys/sysctl.h>
 276 #include <sys/termios.h>
 277 #include <sys/ttycom.h>
 278 #include <sys/wait.h>
 279 #include <net/bpf.h>
 280 #include <net/if.h>
 281 #include <net/if_types.h>
 282 #include <net/route.h>
 283 #include <netinet/in.h>
 284 #include <netinet/in_systm.h>
 285 #include <netinet/ip.h>
 286 #include <netinet/ip_mroute.h>
 287 #include <netinet/if_ether.h>
 288
 289 // Needed since <sys/param.h> refers to it...
 290 #define schedppq 1
 291 '
 292
 293 includes_OpenBSD='
 294 #include <sys/types.h>
 295 #include <sys/param.h>
 296 #include <sys/event.h>
 297 #include <sys/mman.h>
 298 #include <sys/mount.h>
 299 #include <sys/socket.h>
 300 #include <sys/sockio.h>
 301 #include <sys/stat.h>
 302 #include <sys/sysctl.h>
 303 #include <sys/termios.h>
 304 #include <sys/ttycom.h>
 305 #include <sys/unistd.h>
 306 #include <sys/wait.h>
 307 #include <net/bpf.h>
 308 #include <net/if.h>
 309 #include <net/if_types.h>
 310 #include <net/if_var.h>
 311 #include <net/route.h>
 312 #include <netinet/in.h>
 313 #include <netinet/in_systm.h>
 314 #include <netinet/ip.h>
 315 #include <netinet/ip_mroute.h>
 316 #include <netinet/if_ether.h>
 317 #include <net/if_bridge.h>
 318
 319 // We keep some constants not supported in OpenBSD 5.5 and beyond for
 320 // the promise of compatibility.
 321 #define EMUL_ENABLED            0x1
 322 #define EMUL_NATIVE             0x2
 323 #define IPV6_FAITH              0x1d
 324 #define IPV6_OPTIONS            0x1
 325 #define IPV6_RTHDR_STRICT       0x1
 326 #define IPV6_SOCKOPT_RESERVED1  0x3
 327 #define SIOCGIFGENERIC          0xc020693a
 328 #define SIOCSIFGENERIC          0x80206939
 329 #define WALTSIG                 0x4
 330 '
 331
 332 includes_SunOS='
 333 #include <limits.h>
 334 #include <sys/types.h>
 335 #include <sys/socket.h>
 336 #include <sys/sockio.h>
 337 #include <sys/stat.h>
 338 #include <sys/mman.h>
 339 #include <sys/wait.h>
 340 #include <sys/ioctl.h>
 341 #include <sys/mkdev.h>
 342 #include <net/bpf.h>
 343 #include <net/if.h>
 344 #include <net/if_arp.h>
 345 #include <net/if_types.h>
 346 #include <net/route.h>
 347 #include <netinet/in.h>
 348 #include <termios.h>
 349 #include <netinet/ip.h>
 350 #include <netinet/ip_mroute.h>
 351 '
 352
 353
 354 includes='
 355 #include <sys/types.h>
 356 #include <sys/file.h>
 357 #include <fcntl.h>
 358 #include <dirent.h>
 359 #include <sys/socket.h>
 360 #include <netinet/in.h>
 361 #include <netinet/ip.h>
 362 #include <netinet/ip6.h>
 363 #include <netinet/tcp.h>
 364 #include <errno.h>
 365 #include <sys/signal.h>
 366 #include <signal.h>
 367 #include <sys/resource.h>
 368 #include <time.h>
 369 '
 370 ccflags="$@"
 371
 372 # Write go tool cgo -godefs input.
 373 (
 374         echo package unix
 375         echo
 376         echo '/*'
 377         indirect="includes_$(uname)"
 378         echo "${!indirect} $includes"
 379         echo '*/'
 380         echo 'import "C"'
 381         echo 'import "syscall"'
 382         echo
 383         echo 'const ('
 384
 385         # The gcc command line prints all the #defines
 386         # it encounters while processing the input
 387         echo "${!indirect} $includes" | $CC -x c - -E -dM $ccflags |
 388         awk '
 389                 $1 != "#define" || $2 ~ /\(/ || $3 == "" {next}
 390
 391                 $2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next}  # 386 registers
 392                 $2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
 393                 $2 ~ /^(SCM_SRCRT)$/ {next}
 394                 $2 ~ /^(MAP_FAILED)$/ {next}
 395                 $2 ~ /^ELF_.*$/ {next}# <asm/elf.h> contains ELF_ARCH, etc.
 396
 397                 $2 ~ /^EXTATTR_NAMESPACE_NAMES/ ||
 398                 $2 ~ /^EXTATTR_NAMESPACE_[A-Z]+_STRING/ {next}
 399
 400                 $2 !~ /^ECCAPBITS/ &&
 401                 $2 !~ /^ETH_/ &&
 402                 $2 !~ /^EPROC_/ &&
 403                 $2 !~ /^EQUIV_/ &&
 404                 $2 !~ /^EXPR_/ &&
 405                 $2 ~ /^E[A-Z0-9_]+$/ ||
 406                 $2 ~ /^B[0-9_]+$/ ||
 407                 $2 ~ /^(OLD|NEW)DEV$/ ||
 408                 $2 == "BOTHER" ||
 409                 $2 ~ /^CI?BAUD(EX)?$/ ||
 410                 $2 == "IBSHIFT" ||
 411                 $2 ~ /^V[A-Z0-9]+$/ ||
 412                 $2 ~ /^CS[A-Z0-9]/ ||
 413                 $2 ~ /^I(SIG|CANON|CRNL|UCLC|EXTEN|MAXBEL|STRIP|UTF8)$/ ||
 414                 $2 ~ /^IGN/ ||
 415                 $2 ~ /^IX(ON|ANY|OFF)$/ ||
 416                 $2 ~ /^IN(LCR|PCK)$/ ||
 417                 $2 !~ "X86_CR3_PCID_NOFLUSH" &&
 418                 $2 ~ /(^FLU?SH)|(FLU?SH$)/ ||
 419                 $2 ~ /^C(LOCAL|READ|MSPAR|RTSCTS)$/ ||
 420                 $2 == "BRKINT" ||
 421                 $2 == "HUPCL" ||
 422                 $2 == "PENDIN" ||
 423                 $2 == "TOSTOP" ||
 424                 $2 == "XCASE" ||
 425                 $2 == "ALTWERASE" ||
 426                 $2 == "NOKERNINFO" ||
 427                 $2 ~ /^PAR/ ||
 428                 $2 ~ /^SIG[^_]/ ||
 429                 $2 ~ /^O[CNPFPL][A-Z]+[^_][A-Z]+$/ ||
 430                 $2 ~ /^(NL|CR|TAB|BS|VT|FF)DLY$/ ||
 431                 $2 ~ /^(NL|CR|TAB|BS|VT|FF)[0-9]$/ ||
 432                 $2 ~ /^O?XTABS$/ ||
 433                 $2 ~ /^TC[IO](ON|OFF)$/ ||
 434                 $2 ~ /^IN_/ ||
 435                 $2 ~ /^LOCK_(SH|EX|NB|UN)$/ ||
 436                 $2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|EVFILT|NOTE|EV|SHUT|PROT|MAP|MFD|T?PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ ||
 437                 $2 ~ /^TP_STATUS_/ ||
 438                 $2 ~ /^FALLOC_/ ||
 439                 $2 == "ICMPV6_FILTER" ||
 440                 $2 == "SOMAXCONN" ||
 441                 $2 == "NAME_MAX" ||
 442                 $2 == "IFNAMSIZ" ||
 443                 $2 ~ /^CTL_(HW|KERN|MAXNAME|NET|QUERY)$/ ||
 444                 $2 ~ /^KERN_(HOSTNAME|OS(RELEASE|TYPE)|VERSION)$/ ||
 445                 $2 ~ /^HW_MACHINE$/ ||
 446                 $2 ~ /^SYSCTL_VERS/ ||
 447                 $2 !~ "MNT_BITS" &&
 448                 $2 ~ /^(MS|MNT|UMOUNT)_/ ||
 449                 $2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ ||
 450                 $2 ~ /^(O|F|[ES]?FD|NAME|S|PTRACE|PT)_/ ||
 451                 $2 ~ /^KEXEC_/ ||
 452                 $2 ~ /^LINUX_REBOOT_CMD_/ ||
 453                 $2 ~ /^LINUX_REBOOT_MAGIC[12]$/ ||
 454                 $2 ~ /^MODULE_INIT_/ ||
 455                 $2 !~ "NLA_TYPE_MASK" &&
 456                 $2 ~ /^(NETLINK|NLM|NLMSG|NLA|IFA|IFAN|RT|RTC|RTCF|RTN|RTPROT|RTNH|ARPHRD|ETH_P|NETNSA)_/ ||
 457                 $2 ~ /^SIOC/ ||
 458                 $2 ~ /^TIOC/ ||
 459                 $2 ~ /^TCGET/ ||
 460                 $2 ~ /^TCSET/ ||
 461                 $2 ~ /^TC(FLSH|SBRKP?|XONC)$/ ||
 462                 $2 !~ "RTF_BITS" &&
 463                 $2 ~ /^(IFF|IFT|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ ||
 464                 $2 ~ /^BIOC/ ||
 465                 $2 ~ /^RUSAGE_(SELF|CHILDREN|THREAD)/ ||
 466                 $2 ~ /^RLIMIT_(AS|CORE|CPU|DATA|FSIZE|LOCKS|MEMLOCK|MSGQUEUE|NICE|NOFILE|NPROC|RSS|RTPRIO|RTTIME|SIGPENDING|STACK)|RLIM_INFINITY/ ||
 467                 $2 ~ /^PRIO_(PROCESS|PGRP|USER)/ ||
 468                 $2 ~ /^CLONE_[A-Z_]+/ ||
 469                 $2 !~ /^(BPF_TIMEVAL)$/ &&
 470                 $2 ~ /^(BPF|DLT)_/ ||
 471                 $2 ~ /^(CLOCK|TIMER)_/ ||
 472                 $2 ~ /^CAN_/ ||
 473                 $2 ~ /^CAP_/ ||
 474                 $2 ~ /^ALG_/ ||
 475                 $2 ~ /^FS_(POLICY_FLAGS|KEY_DESC|ENCRYPTION_MODE|[A-Z0-9_]+_KEY_SIZE|IOC_(GET|SET)_ENCRYPTION)/ ||
 476                 $2 ~ /^GRND_/ ||
 477                 $2 ~ /^RND/ ||
 478                 $2 ~ /^KEY_(SPEC|REQKEY_DEFL)_/ ||
 479                 $2 ~ /^KEYCTL_/ ||
 480                 $2 ~ /^PERF_EVENT_IOC_/ ||
 481                 $2 ~ /^SECCOMP_MODE_/ ||
 482                 $2 ~ /^SPLICE_/ ||
 483                 $2 ~ /^SYNC_FILE_RANGE_/ ||
 484                 $2 !~ /^AUDIT_RECORD_MAGIC/ &&
 485                 $2 !~ /IOC_MAGIC/ &&
 486                 $2 ~ /^[A-Z][A-Z0-9_]+_MAGIC2?$/ ||
 487                 $2 ~ /^(VM|VMADDR)_/ ||
 488                 $2 ~ /^IOCTL_VM_SOCKETS_/ ||
 489                 $2 ~ /^(TASKSTATS|TS)_/ ||
 490                 $2 ~ /^CGROUPSTATS_/ ||
 491                 $2 ~ /^GENL_/ ||
 492                 $2 ~ /^STATX_/ ||
 493                 $2 ~ /^RENAME/ ||
 494                 $2 ~ /^UBI_IOC[A-Z]/ ||
 495                 $2 ~ /^UTIME_/ ||
 496                 $2 ~ /^XATTR_(CREATE|REPLACE|NO(DEFAULT|FOLLOW|SECURITY)|SHOWCOMPRESSION)/ ||
 497                 $2 ~ /^ATTR_(BIT_MAP_COUNT|(CMN|VOL|FILE)_)/ ||
 498                 $2 ~ /^FSOPT_/ ||
 499                 $2 ~ /^WDIOC_/ ||
 500                 $2 ~ /^NFN/ ||
 501                 $2 ~ /^XDP_/ ||
 502                 $2 ~ /^(HDIO|WIN|SMART)_/ ||
 503                 $2 ~ /^CRYPTO_/ ||
 504                 $2 !~ "WMESGLEN" &&
 505                 $2 ~ /^W[A-Z0-9]+$/ ||
 506                 $2 ~/^PPPIOC/ ||
 507                 $2 ~ /^FAN_|FANOTIFY_/ ||
 508                 $2 ~ /^BLK[A-Z]*(GET$|SET$|BUF$|PART$|SIZE)/ {printf("\t%s = C.%s\n", $2, $2)}
 509                 $2 ~ /^__WCOREFLAG$/ {next}
 510                 $2 ~ /^__W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", substr($2,3), $2)}
 511
 512                 {next}
 513         ' | sort
 514
 515         echo ')'
 516 ) >_const.go
 517
 518 # Pull out the error names for later.
 519 errors=$(
 520         echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
 521         awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' |
 522         sort
 523 )
 524
 525 # Pull out the signal names for later.
 526 signals=$(
 527         echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 528         awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
 529         egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
 530         sort
 531 )
 532
 533 # Again, writing regexps to a file.
 534 echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
 535         awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print "^\t" $2 "[ \t]*=" }' |
 536         sort >_error.grep
 537 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 538         awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
 539         egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
 540         sort >_signal.grep
 541
 542 echo '// mkerrors.sh' "$@"
 543 echo '// Code generated by the command above; see README.md. DO NOT EDIT.'
 544 echo
 545 echo "// +build ${GOARCH},${GOOS}"
 546 echo
 547 go tool cgo -godefs -- "$@" _const.go >_error.out
 548 cat _error.out | grep -vf _error.grep | grep -vf _signal.grep
 549 echo
 550 echo '// Errors'
 551 echo 'const ('
 552 cat _error.out | grep -f _error.grep | sed 's/=\(.*\)/= syscall.Errno(\1)/'
 553 echo ')'
 554
 555 echo
 556 echo '// Signals'
 557 echo 'const ('
 558 cat _error.out | grep -f _signal.grep | sed 's/=\(.*\)/= syscall.Signal(\1)/'
 559 echo ')'
 560
 561 # Run C program to print error and syscall strings.
 562 (
 563         echo -E "
 564 #include <stdio.h>
 565 #include <stdlib.h>
 566 #include <errno.h>
 567 #include <ctype.h>
 568 #include <string.h>
 569 #include <signal.h>
 570
 571 #define nelem(x) (sizeof(x)/sizeof((x)[0]))
 572
 573 enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below
 574
 575 struct tuple {
 576         int num;
 577         const char *name;
 578 };
 579
 580 struct tuple errors[] = {
 581 "
 582         for i in $errors
 583         do
 584                 echo -E '       {'$i', "'$i'" },'
 585         done
 586
 587         echo -E "
 588 };
 589
 590 struct tuple signals[] = {
 591 "
 592         for i in $signals
 593         do
 594                 echo -E '       {'$i', "'$i'" },'
 595         done
 596
 597         # Use -E because on some systems bash builtin interprets \n itself.
 598         echo -E '
 599 };
 600
 601 static int
 602 tuplecmp(const void *a, const void *b)
 603 {
 604         return ((struct tuple *)a)->num - ((struct tuple *)b)->num;
 605 }
 606
 607 int
 608 main(void)
 609 {
 610         int i, e;
 611         char buf[1024], *p;
 612
 613         printf("\n\n// Error table\n");
 614         printf("var errorList = [...]struct {\n");
 615         printf("\tnum  syscall.Errno\n");
 616         printf("\tname string\n");
 617         printf("\tdesc string\n");
 618         printf("} {\n");
 619         qsort(errors, nelem(errors), sizeof errors[0], tuplecmp);
 620         for(i=0; i<nelem(errors); i++) {
 621                 e = errors[i].num;
 622                 if(i > 0 && errors[i-1].num == e)
 623                         continue;
 624                 strcpy(buf, strerror(e));
 625                 // lowercase first letter: Bad -> bad, but STREAM -> STREAM.
 626                 if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
 627                         buf[0] += a - A;
 628                 printf("\t{ %d, \"%s\", \"%s\" },\n", e, errors[i].name, buf);
 629         }
 630         printf("}\n\n");
 631
 632         printf("\n\n// Signal table\n");
 633         printf("var signalList = [...]struct {\n");
 634         printf("\tnum  syscall.Signal\n");
 635         printf("\tname string\n");
 636         printf("\tdesc string\n");
 637         printf("} {\n");
 638         qsort(signals, nelem(signals), sizeof signals[0], tuplecmp);
 639         for(i=0; i<nelem(signals); i++) {
 640                 e = signals[i].num;
 641                 if(i > 0 && signals[i-1].num == e)
 642                         continue;
 643                 strcpy(buf, strsignal(e));
 644                 // lowercase first letter: Bad -> bad, but STREAM -> STREAM.
 645                 if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
 646                         buf[0] += a - A;
 647                 // cut trailing : number.
 648                 p = strrchr(buf, ":"[0]);
 649                 if(p)
 650                         *p = '\0';
 651                 printf("\t{ %d, \"%s\", \"%s\" },\n", e, signals[i].name, buf);
 652         }
 653         printf("}\n\n");
 654
 655         return 0;
 656 }
 657
 658 '
 659 ) >_errors.c
 660
 661 $CC $ccflags -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.go _error.grep _signal.grep _error.out