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    <sys/termios.h> only defines TIOCNOTTY if !_XOPEN_SOURCE, while
  41    <sys/ttold.h> does so unconditionally.  */
  42 #ifdef __sgi__
  43 #include <sys/bsd_types.h>
  44 #include <sys/ttold.h>
  45 #endif
  46 #include <netinet/tcp.h>
  47 #include <signal.h>
  48 #include <sys/ioctl.h>
  49 #include <termios.h>
  50 #if defined(HAVE_SYSCALL_H)
  51 #include <syscall.h>
  52 #endif
  53 #if defined(HAVE_SYS_SYSCALL_H)
  54 #include <sys/syscall.h>
  55 #endif
  56 #if defined(HAVE_SYS_EPOLL_H)
  57 #include <sys/epoll.h>
  58 #endif
  59 #if defined(HAVE_SYS_MMAN_H)
  60 #include <sys/mman.h>
  61 #endif
  62 #if defined(HAVE_SYS_PTRACE_H)
  63 #include <sys/ptrace.h>
  64 #endif
  65 #include <sys/resource.h>
  66 #include <sys/uio.h>
  67 #include <sys/socket.h>
  68 #include <sys/stat.h>
  69 #include <sys/time.h>
  70 #include <sys/wait.h>
  71 #include <sys/un.h>
  72 #if defined(HAVE_SYS_USER_H)
  73 #include <sys/user.h>
  74 #endif
  75 #if defined(HAVE_SYS_UTSNAME_H)
  76 #include <sys/utsname.h>
  77 #endif
  78 #if defined(HAVE_SYS_SELECT_H)
  79 #include <sys/select.h>
  80 #endif
  81 #include <unistd.h>
  82 #include <netdb.h>
  83 #include <pwd.h>
  84 #if defined(HAVE_LINUX_FILTER_H)
  85 #include <linux/filter.h>
  86 #endif
  87 #if defined(HAVE_LINUX_NETLINK_H)
  88 #include <linux/netlink.h>
  89 #endif
  90 #if defined(HAVE_LINUX_RTNETLINK_H)
  91 #include <linux/rtnetlink.h>
  92 #endif
  93 #if defined(HAVE_NET_IF_H)
  94 #include <net/if.h>
  95 #endif
  96 EOF
  97
  98 ${CC} -fdump-go-spec=gen-sysinfo.go -std=gnu99 -S -o sysinfo.s sysinfo.c
  99
 100 echo 'package syscall' > ${OUT}
 101 echo 'import "unsafe"' >> ${OUT}
 102 echo 'type _ unsafe.Pointer' >> ${OUT}
 103
 104 # Get all the consts and types, skipping ones which could not be
 105 # represented in Go and ones which we need to rewrite.  We also skip
 106 # function declarations, as we don't need them here.  All the symbols
 107 # will all have a leading underscore.
 108 grep -v '^// ' gen-sysinfo.go | \
 109   grep -v '^func' | \
 110   grep -v '^type _timeval ' | \
 111   grep -v '^type _timespec_t ' | \
 112   grep -v '^type _timespec ' | \
 113   grep -v '^type _timestruc_t ' | \
 114   grep -v '^type _epoll_' | \
 115   grep -v 'in6_addr' | \
 116   grep -v 'sockaddr_in6' | \
 117   sed -e 's/\([^a-zA-Z0-9_]\)_timeval\([^a-zA-Z0-9_]\)/\1Timeval\2/g' \
 118       -e 's/\([^a-zA-Z0-9_]\)_timespec_t\([^a-zA-Z0-9_]\)/\1Timespec\2/g' \
 119       -e 's/\([^a-zA-Z0-9_]\)_timespec\([^a-zA-Z0-9_]\)/\1Timespec\2/g' \
 120       -e 's/\([^a-zA-Z0-9_]\)_timestruc_t\([^a-zA-Z0-9_]\)/\1Timestruc\2/g' \
 121     >> ${OUT}
 122
 123 # The errno constants.
 124 grep '^const _E' gen-sysinfo.go | \
 125   sed -e 's/^\(const \)_\(E[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 126
 127 # The O_xxx flags.
 128 egrep '^const _(O|F|FD)_' gen-sysinfo.go | \
 129   sed -e 's/^\(const \)_\([^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 130 if ! grep '^const O_ASYNC' ${OUT} >/dev/null 2>&1; then
 131   echo "const O_ASYNC = 0" >> ${OUT}
 132 fi
 133 if ! grep '^const O_CLOEXEC' ${OUT} >/dev/null 2>&1; then
 134   echo "const O_CLOEXEC = 0" >> ${OUT}
 135 fi
 136
 137 # The signal numbers.
 138 grep '^const _SIG[^_]' gen-sysinfo.go | \
 139   grep -v '^const _SIGEV_' | \
 140   sed -e 's/^\(const \)_\(SIG[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 141
 142 # The syscall numbers.  We force the names to upper case.
 143 grep '^const _SYS_' gen-sysinfo.go | \
 144   sed -e 's/const _\(SYS_[^= ]*\).*$/\1/' | \
 145   while read sys; do
 146     sup=`echo $sys | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
 147     echo "const $sup = _$sys" >> ${OUT}
 148   done
 149
 150 # Stat constants.
 151 grep '^const _S_' gen-sysinfo.go | \
 152   sed -e 's/^\(const \)_\(S_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 153
 154 # Mmap constants.
 155 grep '^const _PROT_' gen-sysinfo.go | \
 156   sed -e 's/^\(const \)_\(PROT_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 157 grep '^const _MAP_' gen-sysinfo.go | \
 158   sed -e 's/^\(const \)_\(MAP_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 159
 160 # Process status constants.
 161 grep '^const _W' gen-sysinfo.go |
 162   sed -e 's/^\(const \)_\(W[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 163 # WSTOPPED was introduced in glibc 2.3.4.
 164 if ! grep '^const _WSTOPPED = ' gen-sysinfo.go >/dev/null 2>&1; then
 165   if grep '^const _WUNTRACED = ' gen-sysinfo.go > /dev/null 2>&1; then
 166     echo 'const WSTOPPED = _WUNTRACED' >> ${OUT}
 167   else
 168     echo 'const WSTOPPED = 2' >> ${OUT}
 169   fi
 170 fi
 171 if grep '^const ___WALL = ' gen-sysinfo.go >/dev/null 2>&1 \
 172    && ! grep '^const _WALL = ' gen-sysinfo.go >/dev/null 2>&1; then
 173   echo 'const WALL = ___WALL' >> ${OUT}
 174 fi
 175
 176 # Networking constants.
 177 egrep '^const _(AF|SOCK|SOL|SO|IPPROTO|TCP|IP|IPV6)_' gen-sysinfo.go |
 178   sed -e 's/^\(const \)_\([^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 179 grep '^const _SOMAXCONN' gen-sysinfo.go |
 180   sed -e 's/^\(const \)_\(SOMAXCONN[^= ]*\)\(.*\)$/\1\2 = _\2/' \
 181     >> ${OUT}
 182 grep '^const _SHUT_' gen-sysinfo.go |
 183   sed -e 's/^\(const \)_\(SHUT[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 184
 185 # The net package requires a definition for IPV6ONLY.
 186 if ! grep '^const IPV6_V6ONLY ' ${OUT} >/dev/null 2>&1; then
 187   echo "const IPV6_V6ONLY = 0" >> ${OUT}
 188 fi
 189
 190 # pathconf constants.
 191 grep '^const __PC' gen-sysinfo.go |
 192   sed -e 's/^\(const \)__\(PC[^= ]*\)\(.*\)$/\1\2 = __\2/' >> ${OUT}
 193
 194 # The epoll constants were picked up by the errno constants, but we
 195 # need to be sure the EPOLLRDHUP is defined.
 196 if ! grep '^const EPOLLRDHUP' ${OUT} >/dev/null 2>&1; then
 197   echo "const EPOLLRDHUP = 0x2000" >> ${OUT}
 198 fi
 199
 200 # Ptrace constants.  We don't expose all the PTRACE flags, just the
 201 # PTRACE_O_xxx and PTRACE_EVENT_xxx ones.
 202 grep '^const _PTRACE_O' gen-sysinfo.go |
 203   sed -e 's/^\(const \)_\(PTRACE_O[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 204 grep '^const _PTRACE_EVENT' gen-sysinfo.go |
 205   sed -e 's/^\(const \)_\(PTRACE_EVENT[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 206 # We need PTRACE_SETOPTIONS and PTRACE_GETEVENTMSG, but they are not
 207 # defined in older versions of glibc.
 208 if ! grep '^const _PTRACE_SETOPTIONS' ${OUT} > /dev/null 2>&1; then
 209   echo "const _PTRACE_SETOPTIONS = 0x4200" >> ${OUT}
 210 fi
 211 if ! grep '^const PTRACE_O_TRACESYSGOOD' ${OUT} > /dev/null 2>&1; then
 212   echo "const PTRACE_O_TRACESYSGOOD = 0x1" >> ${OUT}
 213 fi
 214 if ! grep '^const PTRACE_O_TRACEFORK' ${OUT} > /dev/null 2>&1; then
 215   echo "const PTRACE_O_TRACEFORK = 0x2" >> ${OUT}
 216 fi
 217 if ! grep '^const PTRACE_O_TRACEVFORK' ${OUT} > /dev/null 2>&1; then
 218   echo "const PTRACE_O_TRACEVFORK = 0x4" >> ${OUT}
 219 fi
 220 if ! grep '^const PTRACE_O_TRACECLONE' ${OUT} > /dev/null 2>&1; then
 221   echo "const PTRACE_O_TRACECLONE = 0x8" >> ${OUT}
 222 fi
 223 if ! grep '^const PTRACE_O_TRACEEXEC' ${OUT} > /dev/null 2>&1; then
 224   echo "const PTRACE_O_TRACEEXEC = 0x10" >> ${OUT}
 225 fi
 226 if ! grep '^const PTRACE_O_TRACEVFORKDONE' ${OUT} > /dev/null 2>&1; then
 227   echo "const PTRACE_O_TRACEVFORKDONE = 0x20" >> ${OUT}
 228 fi
 229 if ! grep '^const PTRACE_O_TRACEEXIT' ${OUT} > /dev/null 2>&1; then
 230   echo "const PTRACE_O_TRACEEXIT = 0x40" >> ${OUT}
 231 fi
 232 if ! grep '^const PTRACE_O_MASK' ${OUT} > /dev/null 2>&1; then
 233   echo "const PTRACE_O_MASK = 0x7f" >> ${OUT}
 234 fi
 235 if ! grep '^const _PTRACE_GETEVENTMSG' ${OUT} > /dev/null 2>&1; then
 236   echo "const _PTRACE_GETEVENTMSG = 0x4201" >> ${OUT}
 237 fi
 238 if ! grep '^const PTRACE_EVENT_FORK' ${OUT} > /dev/null 2>&1; then
 239   echo "const PTRACE_EVENT_FORK = 1" >> ${OUT}
 240 fi
 241 if ! grep '^const PTRACE_EVENT_VFORK' ${OUT} > /dev/null 2>&1; then
 242   echo "const PTRACE_EVENT_VFORK = 2" >> ${OUT}
 243 fi
 244 if ! grep '^const PTRACE_EVENT_CLONE' ${OUT} > /dev/null 2>&1; then
 245   echo "const PTRACE_EVENT_CLONE = 3" >> ${OUT}
 246 fi
 247 if ! grep '^const PTRACE_EVENT_EXEC' ${OUT} > /dev/null 2>&1; then
 248   echo "const PTRACE_EVENT_EXEC = 4" >> ${OUT}
 249 fi
 250 if ! grep '^const PTRACE_EVENT_VFORK_DONE' ${OUT} > /dev/null 2>&1; then
 251   echo "const PTRACE_EVENT_VFORK_DONE = 5" >> ${OUT}
 252 fi
 253 if ! grep '^const PTRACE_EVENT_EXIT' ${OUT} > /dev/null 2>&1; then
 254   echo "const PTRACE_EVENT_EXIT = 6" >> ${OUT}
 255 fi
 256 if ! grep '^const _PTRACE_TRACEME' ${OUT} > /dev/null 2>&1; then
 257   echo "const _PTRACE_TRACEME = 0" >> ${OUT}
 258 fi
 259
 260 # The registers returned by PTRACE_GETREGS.  This is probably
 261 # GNU/Linux specific; it should do no harm if there is no
 262 # _user_regs_struct.
 263 regs=`grep '^type _user_regs_struct struct' gen-sysinfo.go || true`
 264 if test "$regs" != ""; then
 265   regs=`echo $regs | sed -e 's/type _user_regs_struct struct //' -e 's/[{}]//g'`
 266   regs=`echo $regs | sed -e s'/^ *//'`
 267   nregs=
 268   while test -n "$regs"; do
 269     field=`echo $regs | sed -e 's/^\([^;]*\);.*$/\1/'`
 270     regs=`echo $regs | sed -e 's/^[^;]*; *\(.*\)$/\1/'`
 271     # Capitalize the first character of the field.
 272     f=`echo $field | sed -e 's/^\(.\).*$/\1/'`
 273     r=`echo $field | sed -e 's/^.\(.*\)$/\1/'`
 274     f=`echo $f | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
 275     field="$f$r"
 276     nregs="$nregs $field;"
 277   done
 278   echo "type PtraceRegs struct {$nregs }" >> ${OUT}
 279 fi
 280
 281 # Some basic types.
 282 echo 'type Size_t _size_t' >> ${OUT}
 283 echo "type Ssize_t _ssize_t" >> ${OUT}
 284 if grep '^const _HAVE_OFF64_T = ' gen-sysinfo.go > /dev/null 2>&1; then
 285   echo "type Offset_t _off64_t" >> ${OUT}
 286 else
 287   echo "type Offset_t _off_t" >> ${OUT}
 288 fi
 289 echo "type Mode_t _mode_t" >> ${OUT}
 290 echo "type Pid_t _pid_t" >> ${OUT}
 291 echo "type Uid_t _uid_t" >> ${OUT}
 292 echo "type Gid_t _gid_t" >> ${OUT}
 293 echo "type Socklen_t _socklen_t" >> ${OUT}
 294
 295 # The long type, needed because that is the type that ptrace returns.
 296 sizeof_long=`grep '^const ___SIZEOF_LONG__ = ' gen-sysinfo.go | sed -e 's/.*= //'`
 297 if test "$sizeof_long" = "4"; then
 298   echo "type _C_long int32" >> ${OUT}
 299 elif test "$sizeof_long" = "8"; then
 300   echo "type _C_long int64" >> ${OUT}
 301 else
 302   echo 1>&2 "mksysinfo.sh: could not determine size of long (got $sizeof_long)"
 303   exit 1
 304 fi
 305
 306 # Solaris 2 needs _u?pad128_t, but its default definition in terms of long
 307 # double is commented by -fdump-go-spec.
 308 if grep "^// type _pad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 309   echo "type _pad128_t struct { _l [4]int32; }" >> ${OUT}
 310 fi
 311 if grep "^// type _upad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 312   echo "type _upad128_t struct { _l [4]uint32; }" >> ${OUT}
 313 fi
 314
 315 # The time structures need special handling: we need to name the
 316 # types, so that we can cast integers to the right types when
 317 # assigning to the structures.
 318 timeval=`grep '^type _timeval ' gen-sysinfo.go`
 319 timeval_sec=`echo $timeval | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
 320 timeval_usec=`echo $timeval | sed -n -e 's/^.*tv_usec \([^ ]*\);.*$/\1/p'`
 321 echo "type Timeval_sec_t $timeval_sec" >> ${OUT}
 322 echo "type Timeval_usec_t $timeval_usec" >> ${OUT}
 323 echo $timeval | \
 324   sed -e 's/type _timeval /type Timeval /' \
 325       -e 's/tv_sec *[a-zA-Z0-9_]*/Sec Timeval_sec_t/' \
 326       -e 's/tv_usec *[a-zA-Z0-9_]*/Usec Timeval_usec_t/' >> ${OUT}
 327 timespec=`grep '^type _timespec ' gen-sysinfo.go || true`
 328 if test "$timespec" = ""; then
 329   # IRIX 6.5 has __timespec instead.
 330   timespec=`grep '^type ___timespec ' gen-sysinfo.go || true`
 331 fi
 332 timespec_sec=`echo $timespec | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
 333 timespec_nsec=`echo $timespec | sed -n -e 's/^.*tv_nsec \([^ ]*\);.*$/\1/p'`
 334 echo "type Timespec_sec_t $timespec_sec" >> ${OUT}
 335 echo "type Timespec_nsec_t $timespec_nsec" >> ${OUT}
 336 echo $timespec | \
 337   sed -e 's/^type ___timespec /type Timespec /' \
 338       -e 's/^type _timespec /type Timespec /' \
 339       -e 's/tv_sec *[a-zA-Z0-9_]*/Sec Timespec_sec_t/' \
 340       -e 's/tv_nsec *[a-zA-Z0-9_]*/Nsec Timespec_nsec_t/' >> ${OUT}
 341
 342 timestruc=`grep '^type _timestruc_t ' gen-sysinfo.go || true`
 343 if test "$timestruc" != ""; then
 344   timestruc_sec=`echo $timestruc | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
 345   timestruc_nsec=`echo $timestruc | sed -n -e 's/^.*tv_nsec \([^ ]*\);.*$/\1/p'`
 346   echo "type Timestruc_sec_t $timestruc_sec" >> ${OUT}
 347   echo "type Timestruc_nsec_t $timestruc_nsec" >> ${OUT}
 348   echo $timestruc | \
 349     sed -e 's/^type _timestruc_t /type Timestruc /' \
 350         -e 's/tv_sec *[a-zA-Z0-9_]*/Sec Timestruc_sec_t/' \
 351         -e 's/tv_nsec *[a-zA-Z0-9_]*/Nsec Timestruc_nsec_t/' >> ${OUT}
 352 fi
 353
 354 # The stat type.
 355 # Prefer largefile variant if available.
 356 stat=`grep '^type _stat64 ' gen-sysinfo.go || true`
 357 if test "$stat" != ""; then
 358   grep '^type _stat64 ' gen-sysinfo.go
 359 else
 360   grep '^type _stat ' gen-sysinfo.go
 361 fi | sed -e 's/type _stat64/type Stat_t/' \
 362          -e 's/type _stat/type Stat_t/' \
 363          -e 's/st_dev/Dev/' \
 364          -e 's/st_ino/Ino/g' \
 365          -e 's/st_nlink/Nlink/' \
 366          -e 's/st_mode/Mode/' \
 367          -e 's/st_uid/Uid/' \
 368          -e 's/st_gid/Gid/' \
 369          -e 's/st_rdev/Rdev/' \
 370          -e 's/st_size/Size/' \
 371          -e 's/st_blksize/Blksize/' \
 372          -e 's/st_blocks/Blocks/' \
 373          -e 's/st_atim/Atime/' \
 374          -e 's/st_mtim/Mtime/' \
 375          -e 's/st_ctim/Ctime/' \
 376          -e 's/\([^a-zA-Z0-9_]\)_timeval\([^a-zA-Z0-9_]\)/\1Timeval\2/g' \
 377          -e 's/\([^a-zA-Z0-9_]\)_timespec_t\([^a-zA-Z0-9_]\)/\1Timespec\2/g' \
 378          -e 's/\([^a-zA-Z0-9_]\)_timespec\([^a-zA-Z0-9_]\)/\1Timespec\2/g' \
 379          -e 's/\([^a-zA-Z0-9_]\)_timestruc_t\([^a-zA-Z0-9_]\)/\1Timestruc\2/g' \
 380          -e 's/Godump_[0-9] struct { \([^;]*;\) };/\1/g' \
 381        >> ${OUT}
 382
 383 # The directory searching types.
 384 # Prefer largefile variant if available.
 385 dirent=`grep '^type _dirent64 ' gen-sysinfo.go || true`
 386 if test "$dirent" != ""; then
 387   grep '^type _dirent64 ' gen-sysinfo.go
 388 else
 389   grep '^type _dirent ' gen-sysinfo.go
 390 fi | sed -e 's/type _dirent64/type Dirent/' \
 391          -e 's/type _dirent/type Dirent/' \
 392          -e 's/d_name \[0+1\]/d_name [0+256]/' \
 393          -e 's/d_name/Name/' \
 394          -e 's/]int8/]byte/' \
 395          -e 's/d_ino/Ino/' \
 396          -e 's/d_off/Off/' \
 397          -e 's/d_reclen/Reclen/' \
 398          -e 's/d_type/Type/' \
 399       >> ${OUT}
 400 echo "type DIR _DIR" >> ${OUT}
 401
 402 # The rusage struct.
 403 rusage=`grep '^type _rusage struct' gen-sysinfo.go`
 404 if test "$rusage" != ""; then
 405   rusage=`echo $rusage | sed -e 's/type _rusage struct //' -e 's/[{}]//g'`
 406   rusage=`echo $rusage | sed -e 's/^ *//'`
 407   nrusage=
 408   while test -n "$rusage"; do
 409     field=`echo $rusage | sed -e 's/^\([^;]*\);.*$/\1/'`
 410     rusage=`echo $rusage | sed -e 's/^[^;]*; *\(.*\)$/\1/'`
 411     # Drop the leading ru_, capitalize the next character.
 412     field=`echo $field | sed -e 's/^ru_//'`
 413     f=`echo $field | sed -e 's/^\(.\).*$/\1/'`
 414     r=`echo $field | sed -e 's/^.\(.*\)$/\1/'`
 415     f=`echo $f | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
 416     # Fix _timeval _timespec, and _timestruc_t.
 417     r=`echo $r | sed -e s'/ _timeval$/ Timeval/'`
 418     r=`echo $r | sed -e s'/ _timespec$/ Timespec/'`
 419     r=`echo $r | sed -e s'/ _timestruc_t$/ Timestruc/'`
 420     field="$f$r"
 421     nrusage="$nrusage $field;"
 422   done
 423   echo "type Rusage struct {$nrusage }" >> ${OUT}
 424 else
 425   echo "type Rusage struct {}" >> ${OUT}
 426 fi
 427
 428 # The RUSAGE constants.
 429 grep '^const _RUSAGE_' gen-sysinfo.go | \
 430   sed -e 's/^\(const \)_\(RUSAGE_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 431
 432 # The utsname struct.
 433 grep '^type _utsname ' gen-sysinfo.go | \
 434     sed -e 's/_utsname/Utsname/' \
 435       -e 's/sysname/Sysname/' \
 436       -e 's/nodename/Nodename/' \
 437       -e 's/release/Release/' \
 438       -e 's/version/Version/' \
 439       -e 's/machine/Machine/' \
 440       -e 's/domainname/Domainname/' \
 441     >> ${OUT}
 442
 443 # The iovec struct.
 444 iovec=`grep '^type _iovec ' gen-sysinfo.go`
 445 iovec_len=`echo $iovec | sed -n -e 's/^.*iov_len \([^ ]*\);.*$/\1/p'`
 446 echo "type Iovec_len_t $iovec_len" >> ${OUT}
 447 echo $iovec | \
 448     sed -e 's/_iovec/Iovec/' \
 449       -e 's/iov_base/Base/' \
 450       -e 's/iov_len *[a-zA-Z0-9_]*/Len Iovec_len_t/' \
 451     >> ${OUT}
 452
 453 # The msghdr struct.
 454 msghdr=`grep '^type _msghdr ' gen-sysinfo.go`
 455 msghdr_controllen=`echo $msghdr | sed -n -e 's/^.*msg_controllen \([^ ]*\);.*$/\1/p'`
 456 echo "type Msghdr_controllen_t $msghdr_controllen" >> ${OUT}
 457 echo $msghdr | \
 458     sed -e 's/_msghdr/Msghdr/' \
 459       -e 's/msg_name/Name/' \
 460       -e 's/msg_namelen/Namelen/' \
 461       -e 's/msg_iov/Iov/' \
 462       -e 's/msg_iovlen/Iovlen/' \
 463       -e 's/_iovec/Iovec/' \
 464       -e 's/msg_control/Control/' \
 465       -e 's/msg_controllen *[a-zA-Z0-9_]*/Controllen Msghdr_controllen_t/' \
 466       -e 's/msg_flags/Flags/' \
 467     >> ${OUT}
 468
 469 # The ip_mreq struct
 470 grep '^type _ip_mreq ' gen-sysinfo.go | \
 471     sed -e 's/_ip_mreq/IPMreq/' \
 472       -e 's/imr_multiaddr/Multiaddr/' \
 473       -e 's/imr_interface/Interface/' \
 474       -e 's/_in_addr/[4]byte/g' \
 475     >> ${OUT}
 476
 477 # Try to guess the type to use for fd_set.
 478 fd_set=`grep '^type _fd_set ' gen-sysinfo.go || true`
 479 fds_bits_type="_C_long"
 480 if test "$fd_set" != ""; then
 481     fds_bits_type=`echo $fd_set | sed -e 's/.*[]]\([^;]*\); }$/\1/'`
 482 fi
 483 echo "type fds_bits_type $fds_bits_type" >> ${OUT}
 484
 485 # The addrinfo struct.
 486 grep '^type _addrinfo ' gen-sysinfo.go | \
 487     sed -e 's/_addrinfo/Addrinfo/g' \
 488       -e 's/ ai_/ Ai_/g' \
 489     >> ${OUT}
 490
 491 # The addrinfo flags.
 492 grep '^const _AI_' gen-sysinfo.go | \
 493   sed -e 's/^\(const \)_\(AI_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 494
 495 # The passwd struct.
 496 grep '^type _passwd ' gen-sysinfo.go | \
 497     sed -e 's/_passwd/Passwd/' \
 498       -e 's/ pw_/ Pw_/g' \
 499     >> ${OUT}
 500
 501 # The ioctl flags for the controlling TTY.
 502 grep '^const _TIOC' gen-sysinfo.go | \
 503     sed -e 's/^\(const \)_\(TIOC[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 504
 505 # ioctl constants.  Might fall back to 0 if TIOCNXCL is missing, too, but
 506 # needs handling in syscalls.exec.go.
 507 if ! grep '^const _TIOCSCTTY ' gen-sysinfo.go >/dev/null 2>&1; then
 508   if grep '^const _TIOCNXCL ' gen-sysinfo.go >/dev/null 2>&1; then
 509     echo "const TIOCSCTTY = TIOCNXCL" >> ${OUT}
 510   fi
 511 fi
 512
 513 # The nlmsghdr struct.
 514 grep '^type _nlmsghdr ' gen-sysinfo.go | \
 515     sed -e 's/_nlmsghdr/NlMsghdr/' \
 516       -e 's/nlmsg_len/Len/' \
 517       -e 's/nlmsg_type/Type/' \
 518       -e 's/nlmsg_flags/Flags/' \
 519       -e 's/nlmsg_seq/Seq/' \
 520       -e 's/nlmsg_pid/Pid/' \
 521     >> ${OUT}
 522
 523 # The nlmsg flags and operators.
 524 grep '^const _NLM' gen-sysinfo.go | \
 525     sed -e 's/^\(const \)_\(NLM[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 526
 527 # NLMSG_HDRLEN is defined as an expression using sizeof.
 528 if ! grep '^const NLMSG_HDRLEN' ${OUT} > /dev/null 2>&1; then
 529   if grep '^type NlMsghdr ' ${OUT} > /dev/null 2>&1; then
 530     echo 'var NLMSG_HDRLEN = int((unsafe.Sizeof(NlMsghdr{}) + (NLMSG_ALIGNTO-1)) &^ (NLMSG_ALIGNTO-1))' >> ${OUT}
 531   fi
 532 fi
 533
 534 # The rtgenmsg struct.
 535 grep '^type _rtgenmsg ' gen-sysinfo.go | \
 536     sed -e 's/_rtgenmsg/RtGenmsg/' \
 537       -e 's/rtgen_family/Family/' \
 538     >> ${OUT}
 539
 540 # The routing message flags.
 541 grep '^const _RTA' gen-sysinfo.go | \
 542     sed -e 's/^\(const \)_\(RTA[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 543 grep '^const _RTM' gen-sysinfo.go | \
 544     sed -e 's/^\(const \)_\(RTM[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 545
 546 # The size of the rtgenmsg struct.
 547 if grep 'type RtGenmsg ' ${OUT} > /dev/null 2>&1; then
 548   echo 'var SizeofRtGenmsg = int(unsafe.Sizeof(RtGenmsg{}))' >> ${OUT}
 549 fi
 550
 551 # The ifinfomsg struct.
 552 grep '^type _ifinfomsg ' gen-sysinfo.go | \
 553     sed -e 's/_ifinfomsg/IfInfomsg/' \
 554       -e 's/ifi_family/Family/' \
 555       -e 's/ifi_type/Type/' \
 556       -e 's/ifi_index/Index/' \
 557       -e 's/ifi_flags/Flags/' \
 558       -e 's/ifi_change/Change/' \
 559     >> ${OUT}
 560
 561 # The interface information types and flags.
 562 grep '^const _IFA' gen-sysinfo.go | \
 563     sed -e 's/^\(const \)_\(IFA[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 564 grep '^const _IFLA' gen-sysinfo.go | \
 565     sed -e 's/^\(const \)_\(IFLA[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 566 grep '^const _IFF' gen-sysinfo.go | \
 567     sed -e 's/^\(const \)_\(IFF[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 568
 569 # The size of the ifinfomsg struct.
 570 if grep 'type IfInfomsg ' ${OUT} > /dev/null 2>&1; then
 571   echo 'var SizeofIfInfomsg = int(unsafe.Sizeof(IfInfomsg{}))' >> ${OUT}
 572 fi
 573
 574 # The ifaddrmsg struct.
 575 grep '^type _ifaddrmsg ' gen-sysinfo.go | \
 576     sed -e 's/_ifaddrmsg/IfAddrmsg/' \
 577       -e 's/ifa_family/Family/' \
 578       -e 's/ifa_prefixlen/Prefixlen/' \
 579       -e 's/ifa_flags/Flags/' \
 580       -e 's/ifa_scope/Scope/' \
 581       -e 's/ifa_index/Index/' \
 582     >> ${OUT}
 583
 584 # The size of the ifaddrmsg struct.
 585 if grep 'type IfAddrmsg ' ${OUT} > /dev/null 2>&1; then
 586   echo 'var SizeofIfAddrmsg = int(unsafe.Sizeof(IfAddrmsg{}))' >> ${OUT}
 587 fi
 588
 589 # The rtattr struct.
 590 grep '^type _rtattr ' gen-sysinfo.go | \
 591     sed -e 's/_rtattr/RtAttr/' \
 592       -e 's/rta_len/Len/' \
 593       -e 's/rta_type/Type/' \
 594     >> ${OUT}
 595
 596 # The size of the rtattr struct.
 597 if grep 'type RtAttr ' ${OUT} > /dev/null 2>&1; then
 598   echo 'var SizeofRtAttr = int(unsafe.Sizeof(RtAttr{}))' >> ${OUT}
 599 fi
 600
 601 exit $?