libgo/mksysinfo.sh

   1 #!/bin/sh
   2
   3 # Copyright 2009 The Go Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style
   5 # license that can be found in the LICENSE file.
   6
   7 # Create sysinfo.go.
   8
   9 # This shell script creates the sysinfo.go file which holds types and
  10 # constants extracted from the system header files.  This relies on a
  11 # hook in gcc: the -fdump-go-spec option will generate debugging
  12 # information in Go syntax.
  13
  14 # We currently #include all the files at once, which works, but leads
  15 # to exposing some names which ideally should not be exposed, as they
  16 # match grep patterns.  E.g., WCHAR_MIN gets exposed because it starts
  17 # with W, like the wait flags.
  18
  19 CC=${CC:-gcc}
  20 OUT=tmp-sysinfo.go
  21
  22 set -e
  23
  24 rm -f sysinfo.c
  25 cat > sysinfo.c <<EOF
  26 #include "config.h"
  27
  28 #define _GNU_SOURCE
  29 #define _LARGEFILE_SOURCE
  30 #define _FILE_OFFSET_BITS 64
  31
  32 #include <sys/types.h>
  33 #include <dirent.h>
  34 #include <errno.h>
  35 #include <fcntl.h>
  36 #include <netinet/in.h>
  37 /* <netinet/tcp.h> needs u_char/u_short, but <sys/bsd_types> is only
  38    included by <netinet/in.h> if _SGIAPI (i.e. _SGI_SOURCE
  39    && !_XOPEN_SOURCE.  */
  40 #ifdef __sgi__
  41 #include <sys/bsd_types.h>
  42 #endif
  43 #include <netinet/tcp.h>
  44 #include <signal.h>
  45 #if defined(HAVE_SYSCALL_H)
  46 #include <syscall.h>
  47 #endif
  48 #if defined(HAVE_SYS_SYSCALL_H)
  49 #include <sys/syscall.h>
  50 #endif
  51 #if defined(HAVE_SYS_EPOLL_H)
  52 #include <sys/epoll.h>
  53 #endif
  54 #if defined(HAVE_SYS_MMAN_H)
  55 #include <sys/mman.h>
  56 #endif
  57 #if defined(HAVE_SYS_PTRACE_H)
  58 #include <sys/ptrace.h>
  59 #endif
  60 #include <sys/resource.h>
  61 #include <sys/uio.h>
  62 #include <sys/socket.h>
  63 #include <sys/stat.h>
  64 #include <sys/time.h>
  65 #include <sys/wait.h>
  66 #include <sys/un.h>
  67 #if defined(HAVE_SYS_USER_H)
  68 #include <sys/user.h>
  69 #endif
  70 #if defined(HAVE_SYS_UTSNAME_H)
  71 #include <sys/utsname.h>
  72 #endif
  73 #if defined(HAVE_SYS_SELECT_H)
  74 #include <sys/select.h>
  75 #endif
  76 #include <unistd.h>
  77 #include <netdb.h>
  78 #include <pwd.h>
  79 EOF
  80
  81 ${CC} -fdump-go-spec=gen-sysinfo.go -std=gnu99 -S -o sysinfo.s sysinfo.c
  82
  83 echo 'package syscall' > ${OUT}
  84
  85 # Get all the consts and types, skipping ones which could not be
  86 # represented in Go and ones which we need to rewrite.  We also skip
  87 # function declarations, as we don't need them here.  All the symbols
  88 # will all have a leading underscore.
  89 grep -v '^// ' gen-sysinfo.go | \
  90   grep -v '^func' | \
  91   grep -v '^type _timeval ' | \
  92   grep -v '^type _timespec_t ' | \
  93   grep -v '^type _timespec ' | \
  94   grep -v '^type _timestruc_t ' | \
  95   grep -v '^type _epoll_' | \
  96   grep -v 'in6_addr' | \
  97   grep -v 'sockaddr_in6' | \
  98   sed -e 's/\([^a-zA-Z0-9_]\)_timeval\([^a-zA-Z0-9_]\)/\1Timeval\2/g' \
  99       -e 's/\([^a-zA-Z0-9_]\)_timespec_t\([^a-zA-Z0-9_]\)/\1Timespec\2/g' \
 100       -e 's/\([^a-zA-Z0-9_]\)_timespec\([^a-zA-Z0-9_]\)/\1Timespec\2/g' \
 101       -e 's/\([^a-zA-Z0-9_]\)_timestruc_t\([^a-zA-Z0-9_]\)/\1Timestruc\2/g' \
 102     >> ${OUT}
 103
 104 # The errno constants.
 105 grep '^const _E' gen-sysinfo.go | \
 106   sed -e 's/^\(const \)_\(E[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 107
 108 # The O_xxx flags.
 109 egrep '^const _(O|F|FD)_' gen-sysinfo.go | \
 110   sed -e 's/^\(const \)_\([^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 111 if ! grep '^const O_ASYNC' ${OUT} >/dev/null 2>&1; then
 112   echo "const O_ASYNC = 0" >> ${OUT}
 113 fi
 114 if ! grep '^const O_CLOEXEC' ${OUT} >/dev/null 2>&1; then
 115   echo "const O_CLOEXEC = 0" >> ${OUT}
 116 fi
 117
 118 # The signal numbers.
 119 grep '^const _SIG[^_]' gen-sysinfo.go | \
 120   grep -v '^const _SIGEV_' | \
 121   sed -e 's/^\(const \)_\(SIG[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 122
 123 # The syscall numbers.  We force the names to upper case.
 124 grep '^const _SYS_' gen-sysinfo.go | \
 125   sed -e 's/const _\(SYS_[^= ]*\).*$/\1/' | \
 126   while read sys; do
 127     sup=`echo $sys | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
 128     echo "const $sup = _$sys" >> ${OUT}
 129   done
 130
 131 # Stat constants.
 132 grep '^const _S_' gen-sysinfo.go | \
 133   sed -e 's/^\(const \)_\(S_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 134
 135 # Mmap constants.
 136 grep '^const _PROT_' gen-sysinfo.go | \
 137   sed -e 's/^\(const \)_\(PROT_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 138 grep '^const _MAP_' gen-sysinfo.go | \
 139   sed -e 's/^\(const \)_\(MAP_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 140
 141 # Process status constants.
 142 grep '^const _W' gen-sysinfo.go |
 143   sed -e 's/^\(const \)_\(W[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 144 # WSTOPPED was introduced in glibc 2.3.4.
 145 if ! grep '^const _WSTOPPED = ' gen-sysinfo.go >/dev/null 2>&1; then
 146   if grep '^const _WUNTRACED = ' gen-sysinfo.go > /dev/null 2>&1; then
 147     echo 'const WSTOPPED = _WUNTRACED' >> ${OUT}
 148   else
 149     echo 'const WSTOPPED = 2' >> ${OUT}
 150   fi
 151 fi
 152 if grep '^const ___WALL = ' gen-sysinfo.go >/dev/null 2>&1 \
 153    && ! grep '^const _WALL = ' gen-sysinfo.go >/dev/null 2>&1; then
 154   echo 'const WALL = ___WALL' >> ${OUT}
 155 fi
 156
 157 # Networking constants.
 158 egrep '^const _(AF|SOCK|SOL|SO|IPPROTO|TCP|IP|IPV6)_' gen-sysinfo.go |
 159   sed -e 's/^\(const \)_\([^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 160 grep '^const _SOMAXCONN' gen-sysinfo.go |
 161   sed -e 's/^\(const \)_\(SOMAXCONN[^= ]*\)\(.*\)$/\1\2 = _\2/' \
 162     >> ${OUT}
 163 grep '^const _SHUT_' gen-sysinfo.go |
 164   sed -e 's/^\(const \)_\(SHUT[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 165
 166 # The net package requires a definition for IPV6ONLY.
 167 if ! grep '^const IPV6_V6ONLY ' ${OUT} >/dev/null 2>&1; then
 168   echo "const IPV6_V6ONLY = 0" >> ${OUT}
 169 fi
 170
 171 # pathconf constants.
 172 grep '^const __PC' gen-sysinfo.go |
 173   sed -e 's/^\(const \)__\(PC[^= ]*\)\(.*\)$/\1\2 = __\2/' >> ${OUT}
 174
 175 # The epoll constants were picked up by the errno constants, but we
 176 # need to be sure the EPOLLRDHUP is defined.
 177 if ! grep '^const EPOLLRDHUP' ${OUT} >/dev/null 2>&1; then
 178   echo "const EPOLLRDHUP = 0x2000" >> ${OUT}
 179 fi
 180
 181 # Ptrace constants.  We don't expose all the PTRACE flags, just the
 182 # PTRACE_O_xxx and PTRACE_EVENT_xxx ones.
 183 grep '^const _PTRACE_O' gen-sysinfo.go |
 184   sed -e 's/^\(const \)_\(PTRACE_O[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 185 grep '^const _PTRACE_EVENT' gen-sysinfo.go |
 186   sed -e 's/^\(const \)_\(PTRACE_EVENT[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 187 # We need PTRACE_SETOPTIONS and PTRACE_GETEVENTMSG, but they are not
 188 # defined in older versions of glibc.
 189 if ! grep '^const _PTRACE_SETOPTIONS' ${OUT} > /dev/null 2>&1; then
 190   echo "const _PTRACE_SETOPTIONS = 0x4200" >> ${OUT}
 191 fi
 192 if ! grep '^const PTRACE_O_TRACESYSGOOD' ${OUT} > /dev/null 2>&1; then
 193   echo "const PTRACE_O_TRACESYSGOOD = 0x1" >> ${OUT}
 194 fi
 195 if ! grep '^const PTRACE_O_TRACEFORK' ${OUT} > /dev/null 2>&1; then
 196   echo "const PTRACE_O_TRACEFORK = 0x2" >> ${OUT}
 197 fi
 198 if ! grep '^const PTRACE_O_TRACEVFORK' ${OUT} > /dev/null 2>&1; then
 199   echo "const PTRACE_O_TRACEVFORK = 0x4" >> ${OUT}
 200 fi
 201 if ! grep '^const PTRACE_O_TRACECLONE' ${OUT} > /dev/null 2>&1; then
 202   echo "const PTRACE_O_TRACECLONE = 0x8" >> ${OUT}
 203 fi
 204 if ! grep '^const PTRACE_O_TRACEEXEC' ${OUT} > /dev/null 2>&1; then
 205   echo "const PTRACE_O_TRACEEXEC = 0x10" >> ${OUT}
 206 fi
 207 if ! grep '^const PTRACE_O_TRACEVFORKDONE' ${OUT} > /dev/null 2>&1; then
 208   echo "const PTRACE_O_TRACEVFORKDONE = 0x20" >> ${OUT}
 209 fi
 210 if ! grep '^const PTRACE_O_TRACEEXIT' ${OUT} > /dev/null 2>&1; then
 211   echo "const PTRACE_O_TRACEEXIT = 0x40" >> ${OUT}
 212 fi
 213 if ! grep '^const PTRACE_O_MASK' ${OUT} > /dev/null 2>&1; then
 214   echo "const PTRACE_O_MASK = 0x7f" >> ${OUT}
 215 fi
 216 if ! grep '^const _PTRACE_GETEVENTMSG' ${OUT} > /dev/null 2>&1; then
 217   echo "const _PTRACE_GETEVENTMSG = 0x4201" >> ${OUT}
 218 fi
 219 if ! grep '^const PTRACE_EVENT_FORK' ${OUT} > /dev/null 2>&1; then
 220   echo "const PTRACE_EVENT_FORK = 1" >> ${OUT}
 221 fi
 222 if ! grep '^const PTRACE_EVENT_VFORK' ${OUT} > /dev/null 2>&1; then
 223   echo "const PTRACE_EVENT_VFORK = 2" >> ${OUT}
 224 fi
 225 if ! grep '^const PTRACE_EVENT_CLONE' ${OUT} > /dev/null 2>&1; then
 226   echo "const PTRACE_EVENT_CLONE = 3" >> ${OUT}
 227 fi
 228 if ! grep '^const PTRACE_EVENT_EXEC' ${OUT} > /dev/null 2>&1; then
 229   echo "const PTRACE_EVENT_EXEC = 4" >> ${OUT}
 230 fi
 231 if ! grep '^const PTRACE_EVENT_VFORK_DONE' ${OUT} > /dev/null 2>&1; then
 232   echo "const PTRACE_EVENT_VFORK_DONE = 5" >> ${OUT}
 233 fi
 234 if ! grep '^const PTRACE_EVENT_EXIT' ${OUT} > /dev/null 2>&1; then
 235   echo "const PTRACE_EVENT_EXIT = 6" >> ${OUT}
 236 fi
 237 if ! grep '^const _PTRACE_TRACEME' ${OUT} > /dev/null 2>&1; then
 238   echo "const _PTRACE_TRACEME = 0" >> ${OUT}
 239 fi
 240
 241 # The registers returned by PTRACE_GETREGS.  This is probably
 242 # GNU/Linux specific; it should do no harm if there is no
 243 # _user_regs_struct.
 244 regs=`grep '^type _user_regs_struct struct' gen-sysinfo.go || true`
 245 if test "$regs" != ""; then
 246   regs=`echo $regs | sed -e 's/type _user_regs_struct struct //' -e 's/[{}]//g'`
 247   regs=`echo $regs | sed -e s'/^ *//'`
 248   nregs=
 249   while test -n "$regs"; do
 250     field=`echo $regs | sed -e 's/^\([^;]*\);.*$/\1/'`
 251     regs=`echo $regs | sed -e 's/^[^;]*; *\(.*\)$/\1/'`
 252     # Capitalize the first character of the field.
 253     f=`echo $field | sed -e 's/^\(.\).*$/\1/'`
 254     r=`echo $field | sed -e 's/^.\(.*\)$/\1/'`
 255     f=`echo $f | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
 256     field="$f$r"
 257     nregs="$nregs $field;"
 258   done
 259   echo "type PtraceRegs struct {$nregs }" >> ${OUT}
 260 fi
 261
 262 # Some basic types.
 263 echo 'type Size_t _size_t' >> ${OUT}
 264 echo "type Ssize_t _ssize_t" >> ${OUT}
 265 if grep '^const _HAVE_OFF64_T = ' gen-sysinfo.go > /dev/null 2>&1; then
 266   echo "type Offset_t _off64_t" >> ${OUT}
 267 else
 268   echo "type Offset_t _off_t" >> ${OUT}
 269 fi
 270 echo "type Mode_t _mode_t" >> ${OUT}
 271 echo "type Pid_t _pid_t" >> ${OUT}
 272 echo "type Uid_t _uid_t" >> ${OUT}
 273 echo "type Gid_t _gid_t" >> ${OUT}
 274 echo "type Socklen_t _socklen_t" >> ${OUT}
 275
 276 # The long type, needed because that is the type that ptrace returns.
 277 sizeof_long=`grep '^const ___SIZEOF_LONG__ = ' gen-sysinfo.go | sed -e 's/.*= //'`
 278 if test "$sizeof_long" = "4"; then
 279   echo "type _C_long int32" >> ${OUT}
 280 elif test "$sizeof_long" = "8"; then
 281   echo "type _C_long int64" >> ${OUT}
 282 else
 283   echo 1>&2 "mksysinfo.sh: could not determine size of long (got $sizeof_long)"
 284   exit 1
 285 fi
 286
 287 # Solaris 2 needs _u?pad128_t, but its default definition in terms of long
 288 # double is commented by -fdump-go-spec.
 289 if grep "^// type _pad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 290   echo "type _pad128_t struct { _l [4]int32; }" >> ${OUT}
 291 fi
 292 if grep "^// type _upad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 293   echo "type _upad128_t struct { _l [4]uint32; }" >> ${OUT}
 294 fi
 295
 296 # The time structures need special handling: we need to name the
 297 # types, so that we can cast integers to the right types when
 298 # assigning to the structures.
 299 timeval=`grep '^type _timeval ' gen-sysinfo.go`
 300 timeval_sec=`echo $timeval | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
 301 timeval_usec=`echo $timeval | sed -n -e 's/^.*tv_usec \([^ ]*\);.*$/\1/p'`
 302 echo "type Timeval_sec_t $timeval_sec" >> ${OUT}
 303 echo "type Timeval_usec_t $timeval_usec" >> ${OUT}
 304 echo $timeval | \
 305   sed -e 's/type _timeval /type Timeval /' \
 306       -e 's/tv_sec *[a-zA-Z0-9_]*/Sec Timeval_sec_t/' \
 307       -e 's/tv_usec *[a-zA-Z0-9_]*/Usec Timeval_usec_t/' >> ${OUT}
 308 timespec=`grep '^type _timespec ' gen-sysinfo.go || true`
 309 if test "$timespec" = ""; then
 310   # IRIX 6.5 has __timespec instead.
 311   timespec=`grep '^type ___timespec ' gen-sysinfo.go || true`
 312 fi
 313 timespec_sec=`echo $timespec | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
 314 timespec_nsec=`echo $timespec | sed -n -e 's/^.*tv_nsec \([^ ]*\);.*$/\1/p'`
 315 echo "type Timespec_sec_t $timespec_sec" >> ${OUT}
 316 echo "type Timespec_nsec_t $timespec_nsec" >> ${OUT}
 317 echo $timespec | \
 318   sed -e 's/^type ___timespec /type Timespec /' \
 319       -e 's/^type _timespec /type Timespec /' \
 320       -e 's/tv_sec *[a-zA-Z0-9_]*/Sec Timespec_sec_t/' \
 321       -e 's/tv_nsec *[a-zA-Z0-9_]*/Nsec Timespec_nsec_t/' >> ${OUT}
 322
 323 timestruc=`grep '^type _timestruc_t ' gen-sysinfo.go || true`
 324 if test "$timestruc" != ""; then
 325   timestruc_sec=`echo $timestruc | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
 326   timestruc_nsec=`echo $timestruc | sed -n -e 's/^.*tv_nsec \([^ ]*\);.*$/\1/p'`
 327   echo "type Timestruc_sec_t $timestruc_sec" >> ${OUT}
 328   echo "type Timestruc_nsec_t $timestruc_nsec" >> ${OUT}
 329   echo $timestruc | \
 330     sed -e 's/^type _timestruc_t /type Timestruc /' \
 331         -e 's/tv_sec *[a-zA-Z0-9_]*/Sec Timestruc_sec_t/' \
 332         -e 's/tv_nsec *[a-zA-Z0-9_]*/Nsec Timestruc_nsec_t/' >> ${OUT}
 333 fi
 334
 335 # The stat type.
 336 # Prefer largefile variant if available.
 337 stat=`grep '^type _stat64 ' gen-sysinfo.go || true`
 338 if test "$stat" != ""; then
 339   grep '^type _stat64 ' gen-sysinfo.go
 340 else
 341   grep '^type _stat ' gen-sysinfo.go
 342 fi | sed -e 's/type _stat64/type Stat_t/' \
 343          -e 's/type _stat/type Stat_t/' \
 344          -e 's/st_dev/Dev/' \
 345          -e 's/st_ino/Ino/g' \
 346          -e 's/st_nlink/Nlink/' \
 347          -e 's/st_mode/Mode/' \
 348          -e 's/st_uid/Uid/' \
 349          -e 's/st_gid/Gid/' \
 350          -e 's/st_rdev/Rdev/' \
 351          -e 's/st_size/Size/' \
 352          -e 's/st_blksize/Blksize/' \
 353          -e 's/st_blocks/Blocks/' \
 354          -e 's/st_atim/Atime/' \
 355          -e 's/st_mtim/Mtime/' \
 356          -e 's/st_ctim/Ctime/' \
 357          -e 's/\([^a-zA-Z0-9_]\)_timeval\([^a-zA-Z0-9_]\)/\1Timeval\2/g' \
 358          -e 's/\([^a-zA-Z0-9_]\)_timespec_t\([^a-zA-Z0-9_]\)/\1Timespec\2/g' \
 359          -e 's/\([^a-zA-Z0-9_]\)_timespec\([^a-zA-Z0-9_]\)/\1Timespec\2/g' \
 360          -e 's/\([^a-zA-Z0-9_]\)_timestruc_t\([^a-zA-Z0-9_]\)/\1Timestruc\2/g' \
 361        >> ${OUT}
 362
 363 # The directory searching types.
 364 # Prefer largefile variant if available.
 365 dirent=`grep '^type _dirent64 ' gen-sysinfo.go || true`
 366 if test "$dirent" != ""; then
 367   grep '^type _dirent64 ' gen-sysinfo.go
 368 else
 369   grep '^type _dirent ' gen-sysinfo.go
 370 fi | sed -e 's/type _dirent64/type Dirent/' \
 371          -e 's/type _dirent/type Dirent/' \
 372          -e 's/d_name \[0+1\]/d_name [0+256]/' \
 373          -e 's/d_name/Name/' \
 374          -e 's/]int8/]byte/' \
 375          -e 's/d_ino/Ino/' \
 376          -e 's/d_off/Off/' \
 377          -e 's/d_reclen/Reclen/' \
 378          -e 's/d_type/Type/' \
 379       >> ${OUT}
 380 echo "type DIR _DIR" >> ${OUT}
 381
 382 # The rusage struct.
 383 rusage=`grep '^type _rusage struct' gen-sysinfo.go`
 384 if test "$rusage" != ""; then
 385   rusage=`echo $rusage | sed -e 's/type _rusage struct //' -e 's/[{}]//g'`
 386   rusage=`echo $rusage | sed -e 's/^ *//'`
 387   nrusage=
 388   while test -n "$rusage"; do
 389     field=`echo $rusage | sed -e 's/^\([^;]*\);.*$/\1/'`
 390     rusage=`echo $rusage | sed -e 's/^[^;]*; *\(.*\)$/\1/'`
 391     # Drop the leading ru_, capitalize the next character.
 392     field=`echo $field | sed -e 's/^ru_//'`
 393     f=`echo $field | sed -e 's/^\(.\).*$/\1/'`
 394     r=`echo $field | sed -e 's/^.\(.*\)$/\1/'`
 395     f=`echo $f | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
 396     # Fix _timeval _timespec, and _timestruc_t.
 397     r=`echo $r | sed -e s'/ _timeval$/ Timeval/'`
 398     r=`echo $r | sed -e s'/ _timespec$/ Timespec/'`
 399     r=`echo $r | sed -e s'/ _timestruc_t$/ Timestruc/'`
 400     field="$f$r"
 401     nrusage="$nrusage $field;"
 402   done
 403   echo "type Rusage struct {$nrusage }" >> ${OUT}
 404 else
 405   echo "type Rusage struct {}" >> ${OUT}
 406 fi
 407
 408 # The RUSAGE constants.
 409 grep '^const _RUSAGE_' gen-sysinfo.go | \
 410   sed -e 's/^\(const \)_\(RUSAGE_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 411
 412 # The utsname struct.
 413 grep '^type _utsname ' gen-sysinfo.go | \
 414     sed -e 's/_utsname/Utsname/' \
 415       -e 's/sysname/Sysname/' \
 416       -e 's/nodename/Nodename/' \
 417       -e 's/release/Release/' \
 418       -e 's/version/Version/' \
 419       -e 's/machine/Machine/' \
 420       -e 's/domainname/Domainname/' \
 421     >> ${OUT}
 422
 423 # The iovec struct.
 424 iovec=`grep '^type _iovec ' gen-sysinfo.go`
 425 iovec_len=`echo $iovec | sed -n -e 's/^.*iov_len \([^ ]*\);.*$/\1/p'`
 426 echo "type Iovec_len_t $iovec_len" >> ${OUT}
 427 echo $iovec | \
 428     sed -e 's/_iovec/Iovec/' \
 429       -e 's/iov_base/Base/' \
 430       -e 's/iov_len *[a-zA-Z0-9_]*/Len Iovec_len_t/' \
 431     >> ${OUT}
 432
 433 # The msghdr struct.
 434 msghdr=`grep '^type _msghdr ' gen-sysinfo.go`
 435 msghdr_controllen=`echo $msghdr | sed -n -e 's/^.*msg_controllen \([^ ]*\);.*$/\1/p'`
 436 echo "type Msghdr_controllen_t $msghdr_controllen" >> ${OUT}
 437 echo $msghdr | \
 438     sed -e 's/_msghdr/Msghdr/' \
 439       -e 's/msg_name/Name/' \
 440       -e 's/msg_namelen/Namelen/' \
 441       -e 's/msg_iov/Iov/' \
 442       -e 's/msg_iovlen/Iovlen/' \
 443       -e 's/_iovec/Iovec/' \
 444       -e 's/msg_control/Control/' \
 445       -e 's/msg_controllen *[a-zA-Z0-9_]*/Controllen Msghdr_controllen_t/' \
 446       -e 's/msg_flags/Flags/' \
 447     >> ${OUT}
 448
 449 # The ip_mreq struct
 450 grep '^type _ip_mreq ' gen-sysinfo.go | \
 451     sed -e 's/_ip_mreq/IpMreq/' \
 452       -e 's/imr_multiaddr/Multiaddr/' \
 453       -e 's/imr_interface/Interface/' \
 454       -e 's/_in_addr/[4]byte/g' \
 455     >> ${OUT}
 456
 457 # Try to guess the type to use for fd_set.
 458 fd_set=`grep '^type _fd_set ' gen-sysinfo.go || true`
 459 fds_bits_type="_C_long"
 460 if test "$fd_set" != ""; then
 461     fds_bits_type=`echo $fd_set | sed -e 's/.*[]]\([^;]*\); }$/\1/'`
 462 fi
 463 echo "type fds_bits_type $fds_bits_type" >> ${OUT}
 464
 465 # The addrinfo struct.
 466 grep '^type _addrinfo ' gen-sysinfo.go | \
 467     sed -e 's/_addrinfo/Addrinfo/g' \
 468       -e 's/ ai_/ Ai_/g' \
 469     >> ${OUT}
 470
 471 # The addrinfo flags.
 472 grep '^const _AI_' gen-sysinfo.go | \
 473   sed -e 's/^\(const \)_\(AI_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 474
 475 # The passwd struct.
 476 grep '^type _passwd ' gen-sysinfo.go | \
 477     sed -e 's/_passwd/Passwd/' \
 478       -e 's/ pw_/ Pw_/g' \
 479     >> ${OUT}
 480
 481 exit $?