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 #include <sys/types.h>
  29 #include <dirent.h>
  30 #include <errno.h>
  31 #include <fcntl.h>
  32 #include <netinet/in.h>
  33 /* <netinet/tcp.h> needs u_char/u_short, but <sys/bsd_types> is only
  34    included by <netinet/in.h> if _SGIAPI (i.e. _SGI_SOURCE
  35    && !_XOPEN_SOURCE.
  36    <sys/termios.h> only defines TIOCNOTTY if !_XOPEN_SOURCE, while
  37    <sys/ttold.h> does so unconditionally.  */
  38 #ifdef __sgi__
  39 #include <sys/bsd_types.h>
  40 #include <sys/ttold.h>
  41 #endif
  42 #include <netinet/tcp.h>
  43 #include <signal.h>
  44 #include <sys/ioctl.h>
  45 #include <termios.h>
  46 #if defined(HAVE_SYSCALL_H)
  47 #include <syscall.h>
  48 #endif
  49 #if defined(HAVE_SYS_SYSCALL_H)
  50 #include <sys/syscall.h>
  51 #endif
  52 #if defined(HAVE_SYS_EPOLL_H)
  53 #include <sys/epoll.h>
  54 #endif
  55 #if defined(HAVE_SYS_MMAN_H)
  56 #include <sys/mman.h>
  57 #endif
  58 #if defined(HAVE_SYS_PTRACE_H)
  59 #include <sys/ptrace.h>
  60 #endif
  61 #include <sys/resource.h>
  62 #include <sys/uio.h>
  63 #include <sys/socket.h>
  64 #include <sys/stat.h>
  65 #include <sys/time.h>
  66 #include <sys/wait.h>
  67 #include <sys/un.h>
  68 #if defined(HAVE_SYS_USER_H)
  69 #include <sys/user.h>
  70 #endif
  71 #if defined(HAVE_SYS_UTSNAME_H)
  72 #include <sys/utsname.h>
  73 #endif
  74 #if defined(HAVE_SYS_SELECT_H)
  75 #include <sys/select.h>
  76 #endif
  77 #include <unistd.h>
  78 #include <netdb.h>
  79 #include <pwd.h>
  80 #if defined(HAVE_LINUX_FILTER_H)
  81 #include <linux/filter.h>
  82 #endif
  83 #if defined(HAVE_LINUX_NETLINK_H)
  84 #include <linux/netlink.h>
  85 #endif
  86 #if defined(HAVE_LINUX_RTNETLINK_H)
  87 #include <linux/rtnetlink.h>
  88 #endif
  89 #if defined(HAVE_NET_IF_H)
  90 #include <net/if.h>
  91 #endif
  92 EOF
  93
  94 ${CC} -fdump-go-spec=gen-sysinfo.go -std=gnu99 -S -o sysinfo.s sysinfo.c
  95
  96 echo 'package syscall' > ${OUT}
  97 echo 'import "unsafe"' >> ${OUT}
  98 echo 'type _ unsafe.Pointer' >> ${OUT}
  99
 100 # Get all the consts and types, skipping ones which could not be
 101 # represented in Go and ones which we need to rewrite.  We also skip
 102 # function declarations, as we don't need them here.  All the symbols
 103 # will all have a leading underscore.
 104 grep -v '^// ' gen-sysinfo.go | \
 105   grep -v '^func' | \
 106   grep -v '^type _timeval ' | \
 107   grep -v '^type _timespec_t ' | \
 108   grep -v '^type _timespec ' | \
 109   grep -v '^type _timestruc_t ' | \
 110   grep -v '^type _epoll_' | \
 111   grep -v 'in6_addr' | \
 112   grep -v 'sockaddr_in6' | \
 113   sed -e 's/\([^a-zA-Z0-9_]\)_timeval\([^a-zA-Z0-9_]\)/\1Timeval\2/g' \
 114       -e 's/\([^a-zA-Z0-9_]\)_timespec_t\([^a-zA-Z0-9_]\)/\1Timespec\2/g' \
 115       -e 's/\([^a-zA-Z0-9_]\)_timespec\([^a-zA-Z0-9_]\)/\1Timespec\2/g' \
 116       -e 's/\([^a-zA-Z0-9_]\)_timestruc_t\([^a-zA-Z0-9_]\)/\1Timestruc\2/g' \
 117     >> ${OUT}
 118
 119 # The errno constants.  These get type Errno.
 120 echo '#include <errno.h>' | ${CC} -x c - -E -dM | \
 121   egrep '#define E[A-Z0-9_]+ ' | \
 122   sed -e 's/^#define \(E[A-Z0-9_]*\) .*$/const \1 = Errno(_\1)/' >> ${OUT}
 123
 124 # The O_xxx flags.
 125 egrep '^const _(O|F|FD)_' gen-sysinfo.go | \
 126   sed -e 's/^\(const \)_\([^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 127 if ! grep '^const O_ASYNC' ${OUT} >/dev/null 2>&1; then
 128   echo "const O_ASYNC = 0" >> ${OUT}
 129 fi
 130 if ! grep '^const O_CLOEXEC' ${OUT} >/dev/null 2>&1; then
 131   echo "const O_CLOEXEC = 0" >> ${OUT}
 132 fi
 133
 134 # The signal numbers.
 135 grep '^const _SIG[^_]' gen-sysinfo.go | \
 136   grep -v '^const _SIGEV_' | \
 137   sed -e 's/^\(const \)_\(SIG[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 138
 139 # The syscall numbers.  We force the names to upper case.
 140 grep '^const _SYS_' gen-sysinfo.go | \
 141   sed -e 's/const _\(SYS_[^= ]*\).*$/\1/' | \
 142   while read sys; do
 143     sup=`echo $sys | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
 144     echo "const $sup = _$sys" >> ${OUT}
 145   done
 146
 147 # Stat constants.
 148 grep '^const _S_' gen-sysinfo.go | \
 149   sed -e 's/^\(const \)_\(S_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 150
 151 # Mmap constants.
 152 grep '^const _PROT_' gen-sysinfo.go | \
 153   sed -e 's/^\(const \)_\(PROT_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 154 grep '^const _MAP_' gen-sysinfo.go | \
 155   sed -e 's/^\(const \)_\(MAP_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 156
 157 # Process status constants.
 158 grep '^const _W' gen-sysinfo.go |
 159   sed -e 's/^\(const \)_\(W[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 160 # WSTOPPED was introduced in glibc 2.3.4.
 161 if ! grep '^const _WSTOPPED = ' gen-sysinfo.go >/dev/null 2>&1; then
 162   if grep '^const _WUNTRACED = ' gen-sysinfo.go > /dev/null 2>&1; then
 163     echo 'const WSTOPPED = _WUNTRACED' >> ${OUT}
 164   else
 165     echo 'const WSTOPPED = 2' >> ${OUT}
 166   fi
 167 fi
 168 if grep '^const ___WALL = ' gen-sysinfo.go >/dev/null 2>&1 \
 169    && ! grep '^const _WALL = ' gen-sysinfo.go >/dev/null 2>&1; then
 170   echo 'const WALL = ___WALL' >> ${OUT}
 171 fi
 172
 173 # Networking constants.
 174 egrep '^const _(AF|SOCK|SOL|SO|IPPROTO|TCP|IP|IPV6)_' gen-sysinfo.go |
 175   sed -e 's/^\(const \)_\([^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 176 grep '^const _SOMAXCONN' gen-sysinfo.go |
 177   sed -e 's/^\(const \)_\(SOMAXCONN[^= ]*\)\(.*\)$/\1\2 = _\2/' \
 178     >> ${OUT}
 179 grep '^const _SHUT_' gen-sysinfo.go |
 180   sed -e 's/^\(const \)_\(SHUT[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 181
 182 # The net package requires some const definitions.
 183 for m in IPV6_V6ONLY IPPROTO_IPV6 IPV6_JOIN_GROUP IPV6_LEAVE_GROUP; do
 184   if ! grep "^const $m " ${OUT} >/dev/null 2>&1; then
 185     echo "const $m = 0" >> ${OUT}
 186   fi
 187 done
 188
 189 # pathconf constants.
 190 grep '^const __PC' gen-sysinfo.go |
 191   sed -e 's/^\(const \)__\(PC[^= ]*\)\(.*\)$/\1\2 = __\2/' >> ${OUT}
 192
 193 # epoll constants.
 194 grep '^const _EPOLL' gen-sysinfo.go |
 195   sed -e 's/^\(const \)_\(EPOLL[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 196 # Make sure EPOLLRDHUP is defined.
 197 if ! grep '^const EPOLLRDHUP' ${OUT} >/dev/null 2>&1; then
 198   echo "const EPOLLRDHUP = 0x2000" >> ${OUT}
 199 fi
 200
 201 # Ptrace constants.
 202 grep '^const _PTRACE' gen-sysinfo.go |
 203   sed -e 's/^\(const \)_\(PTRACE[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 204 # We need some ptrace options that are not defined in older versions
 205 # of glibc.
 206 if ! grep '^const PTRACE_SETOPTIONS' ${OUT} > /dev/null 2>&1; then
 207   echo "const PTRACE_SETOPTIONS = 0x4200" >> ${OUT}
 208 fi
 209 if ! grep '^const PTRACE_O_TRACESYSGOOD' ${OUT} > /dev/null 2>&1; then
 210   echo "const PTRACE_O_TRACESYSGOOD = 0x1" >> ${OUT}
 211 fi
 212 if ! grep '^const PTRACE_O_TRACEFORK' ${OUT} > /dev/null 2>&1; then
 213   echo "const PTRACE_O_TRACEFORK = 0x2" >> ${OUT}
 214 fi
 215 if ! grep '^const PTRACE_O_TRACEVFORK' ${OUT} > /dev/null 2>&1; then
 216   echo "const PTRACE_O_TRACEVFORK = 0x4" >> ${OUT}
 217 fi
 218 if ! grep '^const PTRACE_O_TRACECLONE' ${OUT} > /dev/null 2>&1; then
 219   echo "const PTRACE_O_TRACECLONE = 0x8" >> ${OUT}
 220 fi
 221 if ! grep '^const PTRACE_O_TRACEEXEC' ${OUT} > /dev/null 2>&1; then
 222   echo "const PTRACE_O_TRACEEXEC = 0x10" >> ${OUT}
 223 fi
 224 if ! grep '^const PTRACE_O_TRACEVFORKDONE' ${OUT} > /dev/null 2>&1; then
 225   echo "const PTRACE_O_TRACEVFORKDONE = 0x20" >> ${OUT}
 226 fi
 227 if ! grep '^const PTRACE_O_TRACEEXIT' ${OUT} > /dev/null 2>&1; then
 228   echo "const PTRACE_O_TRACEEXIT = 0x40" >> ${OUT}
 229 fi
 230 if ! grep '^const PTRACE_O_MASK' ${OUT} > /dev/null 2>&1; then
 231   echo "const PTRACE_O_MASK = 0x7f" >> ${OUT}
 232 fi
 233 if ! grep '^const _PTRACE_GETEVENTMSG' ${OUT} > /dev/null 2>&1; then
 234   echo "const _PTRACE_GETEVENTMSG = 0x4201" >> ${OUT}
 235 fi
 236 if ! grep '^const PTRACE_EVENT_FORK' ${OUT} > /dev/null 2>&1; then
 237   echo "const PTRACE_EVENT_FORK = 1" >> ${OUT}
 238 fi
 239 if ! grep '^const PTRACE_EVENT_VFORK' ${OUT} > /dev/null 2>&1; then
 240   echo "const PTRACE_EVENT_VFORK = 2" >> ${OUT}
 241 fi
 242 if ! grep '^const PTRACE_EVENT_CLONE' ${OUT} > /dev/null 2>&1; then
 243   echo "const PTRACE_EVENT_CLONE = 3" >> ${OUT}
 244 fi
 245 if ! grep '^const PTRACE_EVENT_EXEC' ${OUT} > /dev/null 2>&1; then
 246   echo "const PTRACE_EVENT_EXEC = 4" >> ${OUT}
 247 fi
 248 if ! grep '^const PTRACE_EVENT_VFORK_DONE' ${OUT} > /dev/null 2>&1; then
 249   echo "const PTRACE_EVENT_VFORK_DONE = 5" >> ${OUT}
 250 fi
 251 if ! grep '^const PTRACE_EVENT_EXIT' ${OUT} > /dev/null 2>&1; then
 252   echo "const PTRACE_EVENT_EXIT = 6" >> ${OUT}
 253 fi
 254 if ! grep '^const _PTRACE_TRACEME' ${OUT} > /dev/null 2>&1; then
 255   echo "const _PTRACE_TRACEME = 0" >> ${OUT}
 256 fi
 257
 258 # The registers returned by PTRACE_GETREGS.  This is probably
 259 # GNU/Linux specific; it should do no harm if there is no
 260 # _user_regs_struct.
 261 regs=`grep '^type _user_regs_struct struct' gen-sysinfo.go || true`
 262 if test "$regs" != ""; then
 263   regs=`echo $regs | sed -e 's/type _user_regs_struct struct //' -e 's/[{}]//g'`
 264   regs=`echo $regs | sed -e s'/^ *//'`
 265   nregs=
 266   while test -n "$regs"; do
 267     field=`echo $regs | sed -e 's/^\([^;]*\);.*$/\1/'`
 268     regs=`echo $regs | sed -e 's/^[^;]*; *\(.*\)$/\1/'`
 269     # Capitalize the first character of the field.
 270     f=`echo $field | sed -e 's/^\(.\).*$/\1/'`
 271     r=`echo $field | sed -e 's/^.\(.*\)$/\1/'`
 272     f=`echo $f | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
 273     field="$f$r"
 274     nregs="$nregs $field;"
 275   done
 276   echo "type PtraceRegs struct {$nregs }" >> ${OUT}
 277 fi
 278
 279 # Some basic types.
 280 echo 'type Size_t _size_t' >> ${OUT}
 281 echo "type Ssize_t _ssize_t" >> ${OUT}
 282 if grep '^const _HAVE_OFF64_T = ' gen-sysinfo.go > /dev/null 2>&1; then
 283   echo "type Offset_t _off64_t" >> ${OUT}
 284 else
 285   echo "type Offset_t _off_t" >> ${OUT}
 286 fi
 287 echo "type Mode_t _mode_t" >> ${OUT}
 288 echo "type Pid_t _pid_t" >> ${OUT}
 289 echo "type Uid_t _uid_t" >> ${OUT}
 290 echo "type Gid_t _gid_t" >> ${OUT}
 291 echo "type Socklen_t _socklen_t" >> ${OUT}
 292
 293 # The long type, needed because that is the type that ptrace returns.
 294 sizeof_long=`grep '^const ___SIZEOF_LONG__ = ' gen-sysinfo.go | sed -e 's/.*= //'`
 295 if test "$sizeof_long" = "4"; then
 296   echo "type _C_long int32" >> ${OUT}
 297 elif test "$sizeof_long" = "8"; then
 298   echo "type _C_long int64" >> ${OUT}
 299 else
 300   echo 1>&2 "mksysinfo.sh: could not determine size of long (got $sizeof_long)"
 301   exit 1
 302 fi
 303
 304 # Solaris 2 needs _u?pad128_t, but its default definition in terms of long
 305 # double is commented by -fdump-go-spec.
 306 if grep "^// type _pad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 307   echo "type _pad128_t struct { _l [4]int32; }" >> ${OUT}
 308 fi
 309 if grep "^// type _upad128_t" gen-sysinfo.go > /dev/null 2>&1; then
 310   echo "type _upad128_t struct { _l [4]uint32; }" >> ${OUT}
 311 fi
 312
 313 # The time structures need special handling: we need to name the
 314 # types, so that we can cast integers to the right types when
 315 # assigning to the structures.
 316 timeval=`grep '^type _timeval ' gen-sysinfo.go`
 317 timeval_sec=`echo $timeval | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
 318 timeval_usec=`echo $timeval | sed -n -e 's/^.*tv_usec \([^ ]*\);.*$/\1/p'`
 319 echo "type Timeval_sec_t $timeval_sec" >> ${OUT}
 320 echo "type Timeval_usec_t $timeval_usec" >> ${OUT}
 321 echo $timeval | \
 322   sed -e 's/type _timeval /type Timeval /' \
 323       -e 's/tv_sec *[a-zA-Z0-9_]*/Sec Timeval_sec_t/' \
 324       -e 's/tv_usec *[a-zA-Z0-9_]*/Usec Timeval_usec_t/' >> ${OUT}
 325 timespec=`grep '^type _timespec ' gen-sysinfo.go || true`
 326 if test "$timespec" = ""; then
 327   # IRIX 6.5 has __timespec instead.
 328   timespec=`grep '^type ___timespec ' gen-sysinfo.go || true`
 329 fi
 330 timespec_sec=`echo $timespec | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
 331 timespec_nsec=`echo $timespec | sed -n -e 's/^.*tv_nsec \([^ ]*\);.*$/\1/p'`
 332 echo "type Timespec_sec_t $timespec_sec" >> ${OUT}
 333 echo "type Timespec_nsec_t $timespec_nsec" >> ${OUT}
 334 echo $timespec | \
 335   sed -e 's/^type ___timespec /type Timespec /' \
 336       -e 's/^type _timespec /type Timespec /' \
 337       -e 's/tv_sec *[a-zA-Z0-9_]*/Sec Timespec_sec_t/' \
 338       -e 's/tv_nsec *[a-zA-Z0-9_]*/Nsec Timespec_nsec_t/' >> ${OUT}
 339
 340 timestruc=`grep '^type _timestruc_t ' gen-sysinfo.go || true`
 341 if test "$timestruc" != ""; then
 342   timestruc_sec=`echo $timestruc | sed -n -e 's/^.*tv_sec \([^ ]*\);.*$/\1/p'`
 343   timestruc_nsec=`echo $timestruc | sed -n -e 's/^.*tv_nsec \([^ ]*\);.*$/\1/p'`
 344   echo "type Timestruc_sec_t $timestruc_sec" >> ${OUT}
 345   echo "type Timestruc_nsec_t $timestruc_nsec" >> ${OUT}
 346   echo $timestruc | \
 347     sed -e 's/^type _timestruc_t /type Timestruc /' \
 348         -e 's/tv_sec *[a-zA-Z0-9_]*/Sec Timestruc_sec_t/' \
 349         -e 's/tv_nsec *[a-zA-Z0-9_]*/Nsec Timestruc_nsec_t/' >> ${OUT}
 350 fi
 351
 352 # The stat type.
 353 # Prefer largefile variant if available.
 354 stat=`grep '^type _stat64 ' gen-sysinfo.go || true`
 355 if test "$stat" != ""; then
 356   grep '^type _stat64 ' gen-sysinfo.go
 357 else
 358   grep '^type _stat ' gen-sysinfo.go
 359 fi | sed -e 's/type _stat64/type Stat_t/' \
 360          -e 's/type _stat/type Stat_t/' \
 361          -e 's/st_dev/Dev/' \
 362          -e 's/st_ino/Ino/g' \
 363          -e 's/st_nlink/Nlink/' \
 364          -e 's/st_mode/Mode/' \
 365          -e 's/st_uid/Uid/' \
 366          -e 's/st_gid/Gid/' \
 367          -e 's/st_rdev/Rdev/' \
 368          -e 's/st_size/Size/' \
 369          -e 's/st_blksize/Blksize/' \
 370          -e 's/st_blocks/Blocks/' \
 371          -e 's/st_atim/Atime/' \
 372          -e 's/st_mtim/Mtime/' \
 373          -e 's/st_ctim/Ctime/' \
 374          -e 's/\([^a-zA-Z0-9_]\)_timeval\([^a-zA-Z0-9_]\)/\1Timeval\2/g' \
 375          -e 's/\([^a-zA-Z0-9_]\)_timespec_t\([^a-zA-Z0-9_]\)/\1Timespec\2/g' \
 376          -e 's/\([^a-zA-Z0-9_]\)_timespec\([^a-zA-Z0-9_]\)/\1Timespec\2/g' \
 377          -e 's/\([^a-zA-Z0-9_]\)_timestruc_t\([^a-zA-Z0-9_]\)/\1Timestruc\2/g' \
 378          -e 's/Godump_[0-9] struct { \([^;]*;\) };/\1/g' \
 379        >> ${OUT}
 380
 381 # The directory searching types.
 382 # Prefer largefile variant if available.
 383 dirent=`grep '^type _dirent64 ' gen-sysinfo.go || true`
 384 if test "$dirent" != ""; then
 385   grep '^type _dirent64 ' gen-sysinfo.go
 386 else
 387   grep '^type _dirent ' gen-sysinfo.go
 388 fi | sed -e 's/type _dirent64/type Dirent/' \
 389          -e 's/type _dirent/type Dirent/' \
 390          -e 's/d_name \[0+1\]/d_name [0+256]/' \
 391          -e 's/d_name/Name/' \
 392          -e 's/]int8/]byte/' \
 393          -e 's/d_ino/Ino/' \
 394          -e 's/d_off/Off/' \
 395          -e 's/d_reclen/Reclen/' \
 396          -e 's/d_type/Type/' \
 397       >> ${OUT}
 398 echo "type DIR _DIR" >> ${OUT}
 399
 400 # The rusage struct.
 401 rusage=`grep '^type _rusage struct' gen-sysinfo.go`
 402 if test "$rusage" != ""; then
 403   rusage=`echo $rusage | sed -e 's/type _rusage struct //' -e 's/[{}]//g'`
 404   rusage=`echo $rusage | sed -e 's/^ *//'`
 405   nrusage=
 406   while test -n "$rusage"; do
 407     field=`echo $rusage | sed -e 's/^\([^;]*\);.*$/\1/'`
 408     rusage=`echo $rusage | sed -e 's/^[^;]*; *\(.*\)$/\1/'`
 409     # Drop the leading ru_, capitalize the next character.
 410     field=`echo $field | sed -e 's/^ru_//'`
 411     f=`echo $field | sed -e 's/^\(.\).*$/\1/'`
 412     r=`echo $field | sed -e 's/^.\(.*\)$/\1/'`
 413     f=`echo $f | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
 414     # Fix _timeval _timespec, and _timestruc_t.
 415     r=`echo $r | sed -e s'/ _timeval$/ Timeval/'`
 416     r=`echo $r | sed -e s'/ _timespec$/ Timespec/'`
 417     r=`echo $r | sed -e s'/ _timestruc_t$/ Timestruc/'`
 418     field="$f$r"
 419     nrusage="$nrusage $field;"
 420   done
 421   echo "type Rusage struct {$nrusage }" >> ${OUT}
 422 else
 423   echo "type Rusage struct {}" >> ${OUT}
 424 fi
 425
 426 # The RUSAGE constants.
 427 grep '^const _RUSAGE_' gen-sysinfo.go | \
 428   sed -e 's/^\(const \)_\(RUSAGE_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 429
 430 # The utsname struct.
 431 grep '^type _utsname ' gen-sysinfo.go | \
 432     sed -e 's/_utsname/Utsname/' \
 433       -e 's/sysname/Sysname/' \
 434       -e 's/nodename/Nodename/' \
 435       -e 's/release/Release/' \
 436       -e 's/version/Version/' \
 437       -e 's/machine/Machine/' \
 438       -e 's/domainname/Domainname/' \
 439     >> ${OUT}
 440
 441 # The iovec struct.
 442 iovec=`grep '^type _iovec ' gen-sysinfo.go`
 443 iovec_len=`echo $iovec | sed -n -e 's/^.*iov_len \([^ ]*\);.*$/\1/p'`
 444 echo "type Iovec_len_t $iovec_len" >> ${OUT}
 445 echo $iovec | \
 446     sed -e 's/_iovec/Iovec/' \
 447       -e 's/iov_base/Base/' \
 448       -e 's/iov_len *[a-zA-Z0-9_]*/Len Iovec_len_t/' \
 449     >> ${OUT}
 450
 451 # The msghdr struct.
 452 msghdr=`grep '^type _msghdr ' gen-sysinfo.go`
 453 msghdr_controllen=`echo $msghdr | sed -n -e 's/^.*msg_controllen \([^ ]*\);.*$/\1/p'`
 454 echo "type Msghdr_controllen_t $msghdr_controllen" >> ${OUT}
 455 echo $msghdr | \
 456     sed -e 's/_msghdr/Msghdr/' \
 457       -e 's/msg_name/Name/' \
 458       -e 's/msg_namelen/Namelen/' \
 459       -e 's/msg_iov/Iov/' \
 460       -e 's/msg_iovlen/Iovlen/' \
 461       -e 's/_iovec/Iovec/' \
 462       -e 's/msg_control/Control/' \
 463       -e 's/msg_controllen *[a-zA-Z0-9_]*/Controllen Msghdr_controllen_t/' \
 464       -e 's/msg_flags/Flags/' \
 465     >> ${OUT}
 466
 467 # The ip_mreq struct.
 468 grep '^type _ip_mreq ' gen-sysinfo.go | \
 469     sed -e 's/_ip_mreq/IPMreq/' \
 470       -e 's/imr_multiaddr/Multiaddr/' \
 471       -e 's/imr_interface/Interface/' \
 472       -e 's/_in_addr/[4]byte/g' \
 473     >> ${OUT}
 474
 475 # We need IPMreq to compile the net package.
 476 if ! grep 'type IPMreq ' ${OUT} >/dev/null 2>&1; then
 477   echo 'type IPMreq struct { Multiaddr [4]byte; Interface [4]byte; }' >> ${OUT}
 478 fi
 479
 480 # The size of the ip_mreq struct.
 481 echo 'var SizeofIPMreq = int(unsafe.Sizeof(IPMreq{}))' >> ${OUT}
 482
 483 # The ipv6_mreq struct.
 484 grep '^type _ipv6_mreq ' gen-sysinfo.go | \
 485     sed -e 's/_ipv6_mreq/IPv6Mreq/' \
 486       -e 's/ipv6mr_multiaddr/Multiaddr/' \
 487       -e 's/ipv6mr_interface/Interface/' \
 488       -e 's/_in6_addr/[16]byte/' \
 489     >> ${OUT}
 490
 491 # We need IPv6Mreq to compile the net package.
 492 if ! grep 'type IPv6Mreq ' ${OUT} >/dev/null 2>&1; then
 493   echo 'type IPv6Mreq struct { Multiaddr [16]byte; Interface uint32; }' >> ${OUT}
 494 fi
 495
 496 # Try to guess the type to use for fd_set.
 497 fd_set=`grep '^type _fd_set ' gen-sysinfo.go || true`
 498 fds_bits_type="_C_long"
 499 if test "$fd_set" != ""; then
 500     fds_bits_type=`echo $fd_set | sed -e 's/.*[]]\([^;]*\); }$/\1/'`
 501 fi
 502 echo "type fds_bits_type $fds_bits_type" >> ${OUT}
 503
 504 # The addrinfo struct.
 505 grep '^type _addrinfo ' gen-sysinfo.go | \
 506     sed -e 's/_addrinfo/Addrinfo/g' \
 507       -e 's/ ai_/ Ai_/g' \
 508     >> ${OUT}
 509
 510 # The addrinfo flags and errors.
 511 grep '^const _AI_' gen-sysinfo.go | \
 512   sed -e 's/^\(const \)_\(AI_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 513 grep '^const _EAI_' gen-sysinfo.go | \
 514   sed -e 's/^\(const \)_\(EAI_[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 515
 516 # The passwd struct.
 517 grep '^type _passwd ' gen-sysinfo.go | \
 518     sed -e 's/_passwd/Passwd/' \
 519       -e 's/ pw_/ Pw_/g' \
 520     >> ${OUT}
 521
 522 # The ioctl flags for the controlling TTY.
 523 grep '^const _TIOC' gen-sysinfo.go | \
 524     sed -e 's/^\(const \)_\(TIOC[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 525
 526 # The ioctl flags for terminal control
 527 grep '^const _TC[GS]ET' gen-sysinfo.go | \
 528     sed -e 's/^\(const \)_\(TC[GS]ET[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 529
 530 # ioctl constants.  Might fall back to 0 if TIOCNXCL is missing, too, but
 531 # needs handling in syscalls.exec.go.
 532 if ! grep '^const _TIOCSCTTY ' gen-sysinfo.go >/dev/null 2>&1; then
 533   if grep '^const _TIOCNXCL ' gen-sysinfo.go >/dev/null 2>&1; then
 534     echo "const TIOCSCTTY = TIOCNXCL" >> ${OUT}
 535   fi
 536 fi
 537
 538 # The nlmsghdr struct.
 539 grep '^type _nlmsghdr ' gen-sysinfo.go | \
 540     sed -e 's/_nlmsghdr/NlMsghdr/' \
 541       -e 's/nlmsg_len/Len/' \
 542       -e 's/nlmsg_type/Type/' \
 543       -e 's/nlmsg_flags/Flags/' \
 544       -e 's/nlmsg_seq/Seq/' \
 545       -e 's/nlmsg_pid/Pid/' \
 546     >> ${OUT}
 547
 548 # The nlmsg flags and operators.
 549 grep '^const _NLM' gen-sysinfo.go | \
 550     sed -e 's/^\(const \)_\(NLM[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 551
 552 # NLMSG_HDRLEN is defined as an expression using sizeof.
 553 if ! grep '^const NLMSG_HDRLEN' ${OUT} > /dev/null 2>&1; then
 554   if grep '^type NlMsghdr ' ${OUT} > /dev/null 2>&1; then
 555     echo 'var NLMSG_HDRLEN = int((unsafe.Sizeof(NlMsghdr{}) + (NLMSG_ALIGNTO-1)) &^ (NLMSG_ALIGNTO-1))' >> ${OUT}
 556   fi
 557 fi
 558
 559 # The rtmsg struct.
 560 grep '^type _rtmsg ' gen-sysinfo.go | \
 561     sed -e 's/_rtmsg/RtMsg/' \
 562       -e 's/rtm_family/Family/' \
 563       -e 's/rtm_dst_len/Dst_len/' \
 564       -e 's/rtm_src_len/Src_len/' \
 565       -e 's/rtm_tos/Tos/' \
 566       -e 's/rtm_table/Table/' \
 567       -e 's/rtm_protocol/Procotol/' \
 568       -e 's/rtm_scope/Scope/' \
 569       -e 's/rtm_type/Type/' \
 570       -e 's/rtm_flags/Flags/' \
 571     >> ${OUT}
 572
 573 # The size of the rtmsg struct.
 574 if grep 'type RtMsg ' ${OUT} > /dev/null 2>&1; then
 575   echo 'var SizeofRtMsg = int(unsafe.Sizeof(RtMsg{}))' >> ${OUT}
 576 fi
 577
 578 # The rtgenmsg struct.
 579 grep '^type _rtgenmsg ' gen-sysinfo.go | \
 580     sed -e 's/_rtgenmsg/RtGenmsg/' \
 581       -e 's/rtgen_family/Family/' \
 582     >> ${OUT}
 583
 584 # The routing message flags.
 585 grep '^const _RTA' gen-sysinfo.go | \
 586     sed -e 's/^\(const \)_\(RTA[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 587 grep '^const _RTM' gen-sysinfo.go | \
 588     sed -e 's/^\(const \)_\(RTM[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 589
 590 # The size of the rtgenmsg struct.
 591 if grep 'type RtGenmsg ' ${OUT} > /dev/null 2>&1; then
 592   echo 'var SizeofRtGenmsg = int(unsafe.Sizeof(RtGenmsg{}))' >> ${OUT}
 593 fi
 594
 595 # The ifinfomsg struct.
 596 grep '^type _ifinfomsg ' gen-sysinfo.go | \
 597     sed -e 's/_ifinfomsg/IfInfomsg/' \
 598       -e 's/ifi_family/Family/' \
 599       -e 's/ifi_type/Type/' \
 600       -e 's/ifi_index/Index/' \
 601       -e 's/ifi_flags/Flags/' \
 602       -e 's/ifi_change/Change/' \
 603     >> ${OUT}
 604
 605 # The interface information types and flags.
 606 grep '^const _IFA' gen-sysinfo.go | \
 607     sed -e 's/^\(const \)_\(IFA[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 608 grep '^const _IFLA' gen-sysinfo.go | \
 609     sed -e 's/^\(const \)_\(IFLA[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 610 grep '^const _IFF' gen-sysinfo.go | \
 611     sed -e 's/^\(const \)_\(IFF[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 612
 613 # The size of the ifinfomsg struct.
 614 if grep 'type IfInfomsg ' ${OUT} > /dev/null 2>&1; then
 615   echo 'var SizeofIfInfomsg = int(unsafe.Sizeof(IfInfomsg{}))' >> ${OUT}
 616 fi
 617
 618 # The ifaddrmsg struct.
 619 grep '^type _ifaddrmsg ' gen-sysinfo.go | \
 620     sed -e 's/_ifaddrmsg/IfAddrmsg/' \
 621       -e 's/ifa_family/Family/' \
 622       -e 's/ifa_prefixlen/Prefixlen/' \
 623       -e 's/ifa_flags/Flags/' \
 624       -e 's/ifa_scope/Scope/' \
 625       -e 's/ifa_index/Index/' \
 626     >> ${OUT}
 627
 628 # The size of the ifaddrmsg struct.
 629 if grep 'type IfAddrmsg ' ${OUT} > /dev/null 2>&1; then
 630   echo 'var SizeofIfAddrmsg = int(unsafe.Sizeof(IfAddrmsg{}))' >> ${OUT}
 631 fi
 632
 633 # The rtattr struct.
 634 grep '^type _rtattr ' gen-sysinfo.go | \
 635     sed -e 's/_rtattr/RtAttr/' \
 636       -e 's/rta_len/Len/' \
 637       -e 's/rta_type/Type/' \
 638     >> ${OUT}
 639
 640 # The size of the rtattr struct.
 641 if grep 'type RtAttr ' ${OUT} > /dev/null 2>&1; then
 642   echo 'var SizeofRtAttr = int(unsafe.Sizeof(RtAttr{}))' >> ${OUT}
 643 fi
 644
 645 # The termios struct.
 646 grep '^type _termios ' gen-sysinfo.go | \
 647     sed -e 's/_termios/Termios/' \
 648       -e 's/c_iflag/Iflag/' \
 649       -e 's/c_oflag/Oflag/' \
 650       -e 's/c_cflag/Cflag/' \
 651       -e 's/c_lflag/Lflag/' \
 652       -e 's/c_line/Line/' \
 653       -e 's/c_cc/Cc/' \
 654       -e 's/c_ispeed/Ispeed/' \
 655       -e 's/c_ospeed/Ospeed/' \
 656     >> ${OUT}
 657
 658 # The termios constants.
 659 for n in IGNBRK BRKINT IGNPAR PARMRK INPCK ISTRIP INLCR IGNCR ICRNL IUCLC \
 660     IXON IXANY IXOFF IMAXBEL IUTF8 OPOST OLCUC ONLCR OCRNL ONOCR ONLRET \
 661     OFILL OFDEL NLDLY NL0 NL1 CRDLY CR0 CR1 CR2 CR3 TABDLY BSDLY VTDLY \
 662     FFDLY CBAUD CBAUDEX CSIZE CSTOPB CREAD PARENB PARODD HUPCL CLOCAL \
 663     LOBLK CIBAUD CMSPAR CRTSCTS ISIG ICANON XCASE ECHO ECHOE ECHOK ECHONL \
 664     ECHOCTL ECHOPRT ECHOKE DEFECHO FLUSHO NOFLSH TOSTOP PENDIN IEXTEN VINTR \
 665     VQUIT VERASE VKILL VEOF VMIN VEOL VTIME VEOL2 VSWTCH VSTART VSTOP VSUSP \
 666     VDSUSP VLNEXT VWERASE VREPRINT VDISCARD VSTATUS TCSANOW TCSADRAIN \
 667     TCSAFLUSH TCIFLUSH TCOFLUSH TCIOFLUSH TCOOFF TCOON TCIOFF TCION B0 B50 \
 668     B75 B110 B134 B150 B200 B300 B600 B1200 B1800 B2400 B4800 B9600 B19200 \
 669     B38400 B57600 B115200 B230400; do
 670
 671     grep "^const _$n " gen-sysinfo.go | \
 672         sed -e 's/^\(const \)_\([^=]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
 673 done
 674
 675 exit $?