Implement new syscall package.

Calls to library functions now use entersyscall and
exitsyscall as appropriate.  This is a first step toward
multiplexing goroutines onto threads.

From-SVN: r180345

libgo/Makefile.am

@@ -1392,128 +1392,142 @@ go_testing_script_files = \
 
 # Define Syscall and Syscall6.
 if LIBGO_IS_RTEMS
-syscall_syscall_file = syscalls/syscall_stubs.go
+syscall_syscall_file = go/syscall/syscall_stubs.go
 else
-syscall_syscall_file = syscalls/syscall.go
+syscall_syscall_file = go/syscall/syscall_unix.go
 endif
 
-# Declare libc functions that vary for largefile systems.
-if LIBGO_IS_LINUX
-# Always use lseek64 on GNU/Linux.
-syscall_filesize_file = syscalls/sysfile_largefile.go
-syscall_stat_file = syscalls/sysfile_stat_largefile.go
-else # !LIBGO_IS_LINUX
-if LIBGO_IS_SOLARIS
-if LIBGO_IS_386
-# Use lseek64 on 32-bit Solaris/x86.
-syscall_filesize_file = syscalls/sysfile_largefile.go
-syscall_stat_file = syscalls/sysfile_stat_largefile.go
-else # !LIBGO_IS_386
-if LIBGO_IS_SPARC
-# Use lseek64 on 32-bit Solaris/SPARC.
-syscall_filesize_file = syscalls/sysfile_largefile.go
-syscall_stat_file = syscalls/sysfile_stat_largefile.go
-else # !LIBGO_IS_386 && !LIBGO_IS_SPARC
-# Use lseek on 64-bit Solaris.
-syscall_filesize_file = syscalls/sysfile_regfile.go
-syscall_stat_file = syscalls/sysfile_stat_regfile.go
-endif # !LIBGO_IS_386 && !LIBGO_IS_SPARC
-endif # !LIBGO_IS_SOLARIS
-else # !LIBGO_IS_LINUX && !LIBGO_IS_SOLARIS
-# Use lseek by default.
-syscall_filesize_file = syscalls/sysfile_regfile.go
-syscall_stat_file = syscalls/sysfile_stat_regfile.go
-endif # !LIBGO_IS_SOLARIS
-endif # !LIBGO_IS_LINUX
-
-
-# Define ForkExec, PtraceForkExec, and Exec.
+# Define ForkExec and Exec.
 if LIBGO_IS_RTEMS
-syscall_exec_os_file = syscalls/exec_stubs.go
+syscall_exec_file = go/syscall/exec_stubs.go
 else
-syscall_exec_os_file = syscalls/exec.go
+syscall_exec_file = go/syscall/exec_unix.go
 endif
 
 # Define Wait4.
 if HAVE_WAIT4
-syscall_wait_file = syscalls/wait4.go
+syscall_wait_file = go/syscall/libcall_wait4.go
 else
-syscall_wait_file = syscalls/waitpid.go
+syscall_wait_file = go/syscall/libcall_waitpid.go
 endif
 
 # Define Sleep.
 if LIBGO_IS_RTEMS
-syscall_sleep_file = syscalls/sleep_rtems.go
+syscall_sleep_file = go/syscall/sleep_rtems.go
 else
-syscall_sleep_file = syscalls/sleep_select.go
+syscall_sleep_file = go/syscall/sleep_select.go
 endif
 
 # Define Errstr.
+if LIBGO_IS_LINUX
+syscall_errstr_file = go/syscall/errstr_linux.go
+else
 if LIBGO_IS_RTEMS
-syscall_errstr_file = syscalls/errstr_rtems.go
+syscall_errstr_file = go/syscall/errstr_linux.go
 else
 if HAVE_STRERROR_R
-syscall_errstr_file = syscalls/errstr.go
+syscall_errstr_file = go/syscall/errstr.go
 else
-syscall_errstr_file = syscalls/errstr_nor.go
+syscall_errstr_file = go/syscall/errstr_nor.go
+endif
 endif
 endif
 
-# Declare libc_strerror_r which is the Go name for strerror_r.
-if LIBGO_IS_RTEMS
-# RTEMS uses newlib in which strerror_r returns char *.
-syscall_errstr_decl_file = syscalls/errstr_decl_rtems.go
-else
+# Declare libc functions that vary for largefile systems.
 if LIBGO_IS_LINUX
-# On GNU/Linux the POSIX strerror_r is called __xpg_strerror_r.
-syscall_errstr_decl_file = syscalls/errstr_decl_linux.go
-else
-# On other systems we hope strerror_r is just strerror_r.
-syscall_errstr_decl_file = syscalls/errstr_decl.go
-endif
-endif
+# Always use lseek64 on GNU/Linux.
+syscall_size_file = go/syscall/libcall_posix_largefile.go
+else # !LIBGO_IS_LINUX
+if LIBGO_IS_SOLARIS
+if LIBGO_IS_386
+# Use lseek64 on 32-bit Solaris/x86.
+syscall_size_file = go/syscall/libcall_posix_largefile.go
+else # !LIBGO_IS_386
+if LIBGO_IS_SPARC
+# Use lseek64 on 32-bit Solaris/SPARC.
+syscall_size_file = go/syscall/libcall_posix_largefile.go
+else # !LIBGO_IS_386 && !LIBGO_IS_SPARC
+# Use lseek on 64-bit Solaris.
+syscall_size_file = go/syscall/libcall_posix_regfile.go
+endif # !LIBGO_IS_386 && !LIBGO_IS_SPARC
+endif # !LIBGO_IS_SOLARIS
+else # !LIBGO_IS_LINUX && !LIBGO_IS_SOLARIS
+# Use lseek by default.
+syscall_size_file = go/syscall/libcall_posix_regfile.go
+endif # !LIBGO_IS_SOLARIS
+endif # !LIBGO_IS_LINUX
 
 # Define socket sizes and types.
 if LIBGO_IS_LINUX
-syscall_socket_os_file = syscalls/socket_linux.go
+syscall_socket_file = go/syscall/socket_linux.go
 else
 if LIBGO_IS_SOLARIS
-syscall_socket_os_file = syscalls/socket_solaris.go
+syscall_socket_file = go/syscall/socket_solaris.go
 else
 if LIBGO_IS_IRIX
-syscall_socket_os_file = syscalls/socket_irix.go
+syscall_socket_file = go/syscall/socket_irix.go
 else
-syscall_socket_os_file = syscalls/socket_bsd.go
+syscall_socket_file = go/syscall/socket_bsd.go
 endif
 endif
 endif
 
-# Support for epoll.
-if LIBGO_IS_LINUX
-syscall_socket_epoll_file = syscalls/socket_epoll.go
-else
-syscall_socket_epoll_file =
-endif
-
 # Support for uname.
 if LIBGO_IS_SOLARIS
 if LIBGO_IS_386
-# 32-bit Solaris 2/x86 needs _nuname, handled in syscall_solaris_386.go.
+# 32-bit Solaris 2/x86 needs _nuname, handled in libcall_solaris_386.go.
 syscall_uname_file =
 else # !LIBGO_IS_386 && LIBGO_IS_SOLARIS
-syscall_uname_file = syscalls/syscall_uname.go
+syscall_uname_file = go/syscall/libcall_uname.go
 endif
 else # !LIBGO_IS_SOLARIS
-syscall_uname_file = syscalls/syscall_uname.go
+syscall_uname_file = go/syscall/libcall_uname.go
 endif
 
 # Support for netlink sockets and messages.
 if LIBGO_IS_LINUX
-syscall_netlink_file = syscalls/netlink_linux.go
+syscall_netlink_file = go/syscall/netlink_linux.go
 else
 syscall_netlink_file =
 endif
 
+go_base_syscall_files = \
+	go/syscall/libcall_support.go \
+	go/syscall/libcall_posix.go \
+	go/syscall/socket.go \
+	go/syscall/str.go \
+	go/syscall/syscall.go \
+	$(syscall_syscall_file) \
+	$(syscall_exec_file) \
+	$(syscall_wait_file) \
+	$(syscall_sleep_file) \
+	$(syscall_errstr_file) \
+	$(syscall_size_file) \
+	$(syscall_socket_file) \
+	$(syscall_uname_file) \
+	$(syscall_netlink_file) \
+	$(GO_LIBCALL_OS_FILE) \
+	$(GO_LIBCALL_OS_ARCH_FILE) \
+	$(GO_SYSCALL_OS_FILE) \
+	$(GO_SYSCALL_OS_ARCH_FILE)
+
+go_syscall_files = \
+	$(go_base_syscall_files) \
+	libcalls.go \
+	sysinfo.go \
+	syscall_arch.go
+go_syscall_c_files = \
+	go/syscall/errno.c \
+	go/syscall/wait.c
+
+libcalls.go: s-libcalls; @true
+s-libcalls: Makefile go/syscall/mksyscall.awk $(go_base_syscall_files)
+	rm -f libcalls.go.tmp
+	files=`echo $^ | sed -e 's/Makefile//' -e 's|[^ ]*go/syscall/mksyscall.awk||'`; \
+	$(AWK) -f $(srcdir)/go/syscall/mksyscall.awk $${files} > libcalls.go.tmp
+	$(SHELL) $(srcdir)/../move-if-change libcalls.go.tmp libcalls.go
+	$(STAMP) $@
+
 syscall_arch.go: s-syscall_arch; @true
 s-syscall_arch: Makefile
 	rm -f syscall_arch.go.tmp
@@ -1523,30 +1537,11 @@ s-syscall_arch: Makefile
 	$(SHELL) $(srcdir)/../move-if-change syscall_arch.go.tmp syscall_arch.go
 	$(STAMP) $@
 
-go_syscall_files = \
-	$(syscall_errstr_file) \
-	$(syscall_errstr_decl_file) \
-	syscalls/exec_helpers.go \
-	$(syscall_exec_os_file) \
-	$(syscall_wait_file) \
-	$(syscall_filesize_file) \
-	$(syscall_netlink_file) \
-	$(syscall_stat_file) \
-	$(syscall_sleep_file) \
-	syscalls/socket.go \
-	$(syscall_socket_os_file) \
-	$(syscall_socket_epoll_file) \
-	$(syscall_syscall_file) \
-	$(syscall_uname_file) \
-	syscalls/syscall_unix.go \
-	syscalls/stringbyte.go \
-	syscalls/syscall_$(GOOS).go \
-	$(GO_SYSCALLS_SYSCALL_OS_ARCH_FILE) \
-	syscalls/sysfile_posix.go \
-	sysinfo.go \
-	syscall_arch.go
-go_syscall_c_files = \
-	syscalls/errno.c
+sysinfo.go: s-sysinfo; @true
+s-sysinfo: $(srcdir)/mksysinfo.sh config.h
+	CC="$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(OSCFLAGS)" $(SHELL) $(srcdir)/mksysinfo.sh
+	$(SHELL) $(srcdir)/../move-if-change tmp-sysinfo.go sysinfo.go
+	$(STAMP) $@
 
 if LIBGO_IS_LINUX
 # os_lib_inotify_lo = os/inotify.lo
@@ -1708,8 +1703,9 @@ libgo_go_objs = \
 	runtime/pprof.lo \
 	sync/atomic.lo \
 	sync/atomic_c.lo \
-	syscalls/syscall.lo \
-	syscalls/errno.lo \
+	syscall/syscall.lo \
+	syscall/errno.lo \
+	syscall/wait.lo \
 	template/parse.lo \
 	testing/testing.lo \
 	testing/iotest.lo \
@@ -2983,16 +2979,12 @@ testing/script/check: $(CHECK_DEPS)
 	@$(CHECK)
 .PHONY: testing/script/check
 
-sysinfo.go: s-sysinfo; @true
-s-sysinfo: $(srcdir)/mksysinfo.sh config.h
-	CC="$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(OSCFLAGS)" $(SHELL) $(srcdir)/mksysinfo.sh
-	$(SHELL) $(srcdir)/../move-if-change tmp-sysinfo.go sysinfo.go
-	$(STAMP) $@
-
-syscalls/syscall.lo: $(go_syscall_files) sync.gox
+syscall/syscall.lo: $(go_syscall_files) sync.gox
 	$(BUILDPACKAGE)
-syscalls/errno.lo: $(go_syscall_c_files) syscalls/syscall.lo
-	$(LTCOMPILE) -c -o $@ $(srcdir)/syscalls/errno.c
+syscall/errno.lo: go/syscall/errno.c
+	$(LTCOMPILE) -c -o $@ $<
+syscall/wait.lo: go/syscall/wait.c
+	$(LTCOMPILE) -c -o $@ $<
 
 # How to build a .gox file from a .lo file.
 BUILDGOX = \
@@ -3079,7 +3071,7 @@ sync.gox: sync/sync.lo
 	$(BUILDGOX)
 syslog.gox: syslog/syslog.lo
 	$(BUILDGOX)
-syscall.gox: syscalls/syscall.lo
+syscall.gox: syscall/syscall.lo
 	$(BUILDGOX)
 tabwriter.gox: tabwriter/tabwriter.lo
 	$(BUILDGOX)

libgo/configure

@@ -617,7 +617,10 @@ USING_SPLIT_STACK_FALSE
 USING_SPLIT_STACK_TRUE
 SPLIT_STACK
 OSCFLAGS
-GO_SYSCALLS_SYSCALL_OS_ARCH_FILE
+GO_SYSCALL_OS_ARCH_FILE
+GO_SYSCALL_OS_FILE
+GO_LIBCALL_OS_ARCH_FILE
+GO_LIBCALL_OS_FILE
 GOARCH
 LIBGO_IS_X86_64_FALSE
 LIBGO_IS_X86_64_TRUE
@@ -10913,7 +10916,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10916 "configure"
+#line 10919 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11019,7 +11022,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11022 "configure"
+#line 11025 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13151,6 +13154,49 @@ CC="$lt_save_CC"
 CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
 
 
+for ac_prog in gawk mawk nawk awk
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AWK+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AWK"; then
+  ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_AWK="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+$as_echo "$AWK" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$AWK" && break
+done
+
+
 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
 
 
@@ -13551,10 +13597,25 @@ fi
 
 
 
-GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=
-if test -f ${srcdir}/syscalls/syscall_${GOOS}_${GOARCH}.go; then
-  GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=syscalls/syscall_${GOOS}_${GOARCH}.go
+GO_LIBCALL_OS_FILE=
+GO_LIBCALL_OS_ARCH_FILE=
+GO_SYSCALL_OS_FILE=
+GO_SYSCALL_OS_ARCH_FILE=
+if test -f ${srcdir}/go/syscall/libcall_${GOOS}.go; then
+  GO_LIBCALL_OS_FILE=go/syscall/libcall_${GOOS}.go
 fi
+if test -f ${srcdir}/go/syscall/libcall_${GOOS}_${GOARCH}.go; then
+  GO_LIBCALL_OS_ARCH_FILE=go/syscall/libcall_${GOOS}_${GOARCH}.go
+fi
+if test -f ${srcdir}/go/syscall/syscall_${GOOS}.go; then
+  GO_SYSCALL_OS_FILE=go/syscall/syscall_${GOOS}.go
+fi
+if test -f ${srcdir}/go/syscall/syscall_${GOOS}_${GOARCH}.go; then
+  GO_SYSCALL_OS_ARCH_FILE=go/syscall/syscall_${GOOS}_${GOARCH}.go
+fi
+
+
+
 
 
 case "$target" in

libgo/configure.ac

@@ -45,6 +45,8 @@ AC_SUBST(enable_static)
 CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
 AC_SUBST(CC_FOR_BUILD)
 
+AC_PROG_AWK
+
 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
 AC_SUBST(WARN_FLAGS)
 
@@ -249,11 +251,26 @@ AM_CONDITIONAL(LIBGO_IS_X86_64, test $is_x86_64 = yes)
 AC_SUBST(GOARCH)
 
 dnl Some files are only present when needed for specific architectures.
-GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=
-if test -f ${srcdir}/syscalls/syscall_${GOOS}_${GOARCH}.go; then
-  GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=syscalls/syscall_${GOOS}_${GOARCH}.go
+GO_LIBCALL_OS_FILE=
+GO_LIBCALL_OS_ARCH_FILE=
+GO_SYSCALL_OS_FILE=
+GO_SYSCALL_OS_ARCH_FILE=
+if test -f ${srcdir}/go/syscall/libcall_${GOOS}.go; then
+  GO_LIBCALL_OS_FILE=go/syscall/libcall_${GOOS}.go
+fi
+if test -f ${srcdir}/go/syscall/libcall_${GOOS}_${GOARCH}.go; then
+  GO_LIBCALL_OS_ARCH_FILE=go/syscall/libcall_${GOOS}_${GOARCH}.go
+fi
+if test -f ${srcdir}/go/syscall/syscall_${GOOS}.go; then
+  GO_SYSCALL_OS_FILE=go/syscall/syscall_${GOOS}.go
+fi
+if test -f ${srcdir}/go/syscall/syscall_${GOOS}_${GOARCH}.go; then
+  GO_SYSCALL_OS_ARCH_FILE=go/syscall/syscall_${GOOS}_${GOARCH}.go
 fi
-AC_SUBST(GO_SYSCALLS_SYSCALL_OS_ARCH_FILE)
+AC_SUBST(GO_LIBCALL_OS_FILE)
+AC_SUBST(GO_LIBCALL_OS_ARCH_FILE)
+AC_SUBST(GO_SYSCALL_OS_FILE)
+AC_SUBST(GO_SYSCALL_OS_ARCH_FILE)
 
 dnl Some targets need special flags to build sysinfo.go.
 case "$target" in

libgo/go/net/cgo_unix.go

@@ -24,6 +24,17 @@ func libc_getaddrinfo(node *byte, service *byte, hints *syscall.Addrinfo, res **
 func libc_freeaddrinfo(res *syscall.Addrinfo) __asm__ ("freeaddrinfo")
 func libc_gai_strerror(errcode int) *byte __asm__ ("gai_strerror")
 
+// bytePtrToString takes a NUL-terminated array of bytes and convert
+// it to a Go string.
+func bytePtrToString(p *byte) string {
+	a := (*[10000]byte)(unsafe.Pointer(p))
+	i := 0
+	for a[i] != 0 {
+		i++
+	}
+	return string(a[:i])
+}
+
 func cgoLookupHost(name string) (addrs []string, err os.Error, completed bool) {
 	ip, err, completed := cgoLookupIP(name)
 	for _, p := range ip {
@@ -99,13 +110,13 @@ func cgoLookupIPCNAME(name string) (addrs []IP, cname string, err os.Error, comp
 		} else if gerrno == syscall.EAI_SYSTEM {
 			str = syscall.Errstr(syscall.GetErrno())
 		} else {
-			str = syscall.BytePtrToString(libc_gai_strerror(gerrno))
+			str = bytePtrToString(libc_gai_strerror(gerrno))
 		}
 		return nil, "", &DNSError{Error: str, Name: name}, true
 	}
 	defer libc_freeaddrinfo(res)
 	if res != nil {
-		cname = syscall.BytePtrToString((*byte)(unsafe.Pointer(res.Ai_canonname)))
+		cname = bytePtrToString((*byte)(unsafe.Pointer(res.Ai_canonname)))
 		if cname == "" {
 			cname = name
 		}

libgo/go/net/fd_select.go

@@ -12,20 +12,20 @@ import (
 )
 
 type pollster struct {
-	readFds, writeFds, repeatFds *syscall.FdSet_t
+	readFds, writeFds, repeatFds *syscall.FdSet
 	maxFd int
-	readyReadFds, readyWriteFds *syscall.FdSet_t
+	readyReadFds, readyWriteFds *syscall.FdSet
 	nReady int
 	lastFd int
 }
 
 func newpollster() (p *pollster, err os.Error) {
 	p = new(pollster)
-	p.readFds = new(syscall.FdSet_t)
-	p.writeFds = new(syscall.FdSet_t)
-	p.repeatFds = new(syscall.FdSet_t)
-	p.readyReadFds = new(syscall.FdSet_t)
-	p.readyWriteFds = new(syscall.FdSet_t)
+	p.readFds = new(syscall.FdSet)
+	p.writeFds = new(syscall.FdSet)
+	p.repeatFds = new(syscall.FdSet)
+	p.readyReadFds = new(syscall.FdSet)
+	p.readyWriteFds = new(syscall.FdSet)
 	p.maxFd = -1
 	p.nReady = 0
 	p.lastFd = 0
@@ -86,9 +86,9 @@ func (p *pollster) WaitFD(s *pollServer, nsec int64) (fd int, mode int, err os.E
 		}
 
 		var n, e int
-		var tmpReadFds, tmpWriteFds syscall.FdSet_t
+		var tmpReadFds, tmpWriteFds syscall.FdSet
 		for {
-			// Temporary syscall.FdSet_ts into which the values are copied
+			// Temporary syscall.FdSet's into which the values are copied
 			// because select mutates the values.
 			tmpReadFds = *p.readFds
 			tmpWriteFds = *p.writeFds

libgo/go/os/user/lookup_unix.go

@@ -27,6 +27,17 @@ static int mygetpwuid_r(int uid, struct passwd *pwd,
 func libc_getpwnam_r(name *byte, pwd *syscall.Passwd, buf *byte, buflen syscall.Size_t, result **syscall.Passwd) int __asm__ ("getpwnam_r")
 func libc_getpwuid_r(uid syscall.Uid_t, pwd *syscall.Passwd, buf *byte, buflen syscall.Size_t, result **syscall.Passwd) int __asm__ ("getpwuid_r")
 
+// bytePtrToString takes a NUL-terminated array of bytes and convert
+// it to a Go string.
+func bytePtrToString(p *byte) string {
+	a := (*[10000]byte)(unsafe.Pointer(p))
+	i := 0
+	for a[i] != 0 {
+		i++
+	}
+	return string(a[:i])
+}
+
 func init() {
 	implemented = true
 }
@@ -78,9 +89,9 @@ func lookup(uid int, username string, lookupByName bool) (*User, os.Error) {
 	u := &User{
 		Uid:      int(pwd.Pw_uid),
 		Gid:      int(pwd.Pw_gid),
-		Username: syscall.BytePtrToString((*byte)(unsafe.Pointer(pwd.Pw_name))),
-		Name:     syscall.BytePtrToString((*byte)(unsafe.Pointer(pwd.Pw_gecos))),
-		HomeDir:  syscall.BytePtrToString((*byte)(unsafe.Pointer(pwd.Pw_dir))),
+		Username: bytePtrToString((*byte)(unsafe.Pointer(pwd.Pw_name))),
+		Name:     bytePtrToString((*byte)(unsafe.Pointer(pwd.Pw_gecos))),
+		HomeDir:  bytePtrToString((*byte)(unsafe.Pointer(pwd.Pw_dir))),
 	}
 	// The pw_gecos field isn't quite standardized.  Some docs
 	// say: "It is expected to be a comma separated list of

libgo/go/syscall/bpf_bsd.go

+// Copyright 2011 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin freebsd openbsd
+
+// Berkeley packet filter for BSD variants
+
+package syscall
+
+import (
+	"unsafe"
+)
+
+func BpfStmt(code, k int) *BpfInsn {
+	return &BpfInsn{Code: uint16(code), K: uint32(k)}
+}
+
+func BpfJump(code, k, jt, jf int) *BpfInsn {
+	return &BpfInsn{Code: uint16(code), Jt: uint8(jt), Jf: uint8(jf), K: uint32(k)}
+}
+
+func BpfBuflen(fd int) (int, int) {
+	var l int
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCGBLEN, uintptr(unsafe.Pointer(&l)))
+	if e := int(ep); e != 0 {
+		return 0, e
+	}
+	return l, 0
+}
+
+func SetBpfBuflen(fd, l int) (int, int) {
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCSBLEN, uintptr(unsafe.Pointer(&l)))
+	if e := int(ep); e != 0 {
+		return 0, e
+	}
+	return l, 0
+}
+
+func BpfDatalink(fd int) (int, int) {
+	var t int
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCGDLT, uintptr(unsafe.Pointer(&t)))
+	if e := int(ep); e != 0 {
+		return 0, e
+	}
+	return t, 0
+}
+
+func SetBpfDatalink(fd, t int) (int, int) {
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCSDLT, uintptr(unsafe.Pointer(&t)))
+	if e := int(ep); e != 0 {
+		return 0, e
+	}
+	return t, 0
+}
+
+func SetBpfPromisc(fd, m int) int {
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCPROMISC, uintptr(unsafe.Pointer(&m)))
+	if e := int(ep); e != 0 {
+		return e
+	}
+	return 0
+}
+
+func FlushBpf(fd int) int {
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCFLUSH, 0)
+	if e := int(ep); e != 0 {
+		return e
+	}
+	return 0
+}
+
+type ivalue struct {
+	name  [IFNAMSIZ]byte
+	value int16
+}
+
+func BpfInterface(fd int, name string) (string, int) {
+	var iv ivalue
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCGETIF, uintptr(unsafe.Pointer(&iv)))
+	if e := int(ep); e != 0 {
+		return "", e
+	}
+	return name, 0
+}
+
+func SetBpfInterface(fd int, name string) int {
+	var iv ivalue
+	copy(iv.name[:], []byte(name))
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCSETIF, uintptr(unsafe.Pointer(&iv)))
+	if e := int(ep); e != 0 {
+		return e
+	}
+	return 0
+}
+
+func BpfTimeout(fd int) (*Timeval, int) {
+	var tv Timeval
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCGRTIMEOUT, uintptr(unsafe.Pointer(&tv)))
+	if e := int(ep); e != 0 {
+		return nil, e
+	}
+	return &tv, 0
+}
+
+func SetBpfTimeout(fd int, tv *Timeval) int {
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCSRTIMEOUT, uintptr(unsafe.Pointer(tv)))
+	if e := int(ep); e != 0 {
+		return e
+	}
+	return 0
+}
+
+func BpfStats(fd int) (*BpfStat, int) {
+	var s BpfStat
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCGSTATS, uintptr(unsafe.Pointer(&s)))
+	if e := int(ep); e != 0 {
+		return nil, e
+	}
+	return &s, 0
+}
+
+func SetBpfImmediate(fd, m int) int {
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCIMMEDIATE, uintptr(unsafe.Pointer(&m)))
+	if e := int(ep); e != 0 {
+		return e
+	}
+	return 0
+}
+
+func SetBpf(fd int, i []BpfInsn) int {
+	var p BpfProgram
+	p.Len = uint32(len(i))
+	p.Insns = (*BpfInsn)(unsafe.Pointer(&i[0]))
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCSETF, uintptr(unsafe.Pointer(&p)))
+	if e := int(ep); e != 0 {
+		return e
+	}
+	return 0
+}
+
+func CheckBpfVersion(fd int) int {
+	var v BpfVersion
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCVERSION, uintptr(unsafe.Pointer(&v)))
+	if e := int(ep); e != 0 {
+		return e
+	}
+	if v.Major != BPF_MAJOR_VERSION || v.Minor != BPF_MINOR_VERSION {
+		return EINVAL
+	}
+	return 0
+}
+
+func BpfHeadercmpl(fd int) (int, int) {
+	var f int
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCGHDRCMPLT, uintptr(unsafe.Pointer(&f)))
+	if e := int(ep); e != 0 {
+		return 0, e
+	}
+	return f, 0
+}
+
+func SetBpfHeadercmpl(fd, f int) int {
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(fd), BIOCSHDRCMPLT, uintptr(unsafe.Pointer(&f)))
+	if e := int(ep); e != 0 {
+		return e
+	}
+	return 0
+}

libgo/syscalls/errno.c → libgo/go/syscall/errno.c

@@ -9,8 +9,8 @@
 /* errno is typically a macro. These functions set 
    and get errno specific to the libc being used.  */
 
-int GetErrno() asm ("libgo_syscalls.syscall.GetErrno");
-void SetErrno(int) asm ("libgo_syscalls.syscall.SetErrno");
+int GetErrno() asm ("libgo_syscall.syscall.GetErrno");
+void SetErrno(int) asm ("libgo_syscall.syscall.SetErrno");
 
 int 
 GetErrno()

libgo/syscalls/errstr.go → libgo/go/syscall/errstr.go

@@ -6,18 +6,21 @@
 
 package syscall
 
-func Errstr(errno int) string {
-	for len := Size_t(128); ; len *= 2 {
+//sysnb	strerror_r(errnum int, buf []byte) (errno int)
+//strerror_r(errnum int, buf *byte, buflen Size_t) int
+
+func Errstr(errnum int) string {
+	for len := 128; ; len *= 2 {
 		b := make([]byte, len)
-		r := libc_strerror_r(errno, &b[0], len)
-		if r >= 0 {
+		err := strerror_r(errnum, b)
+		if err == 0 {
 			i := 0
 			for b[i] != 0 {
 				i++
 			}
 			return string(b[:i])
 		}
-		if GetErrno() != ERANGE {
+		if err != ERANGE {
 			return "Errstr failure"
 		}
 	}

libgo/syscalls/errstr_rtems.go → libgo/go/syscall/errstr_linux.go

@@ -6,21 +6,18 @@
 
 package syscall
 
-func Errstr(errno int) string {
-	for len := Size_t(128); ; len *= 2 {
-		b := make([]byte, len+1)
+import "unsafe"
 
-		// The newlib strerror_r always returns the string in buffer.
-		libc_strerror_r(errno, &b[0], len)
-		b[len] = 0
+//sysnb	strerror_r(errnum int, b []byte) (errstr *byte)
+//strerror_r(errnum int, b *byte, len Size_t) *byte
 
-		i := 0
-		for b[i] != 0 {
-			i++
-		}
-
-		if Size_t(i) < len {
-			return string(b[0:i])
-		}
+func Errstr(errnum int) string {
+	a := make([]byte, 128)
+	p := strerror_r(errnum, a)
+	b := (*[1000]byte)(unsafe.Pointer(p))
+	i := 0
+	for b[i] != 0 {
+		i++
 	}
+	return string(b[:i])
 }

libgo/syscalls/errstr_nor.go → libgo/go/syscall/errstr_nor.go

@@ -11,7 +11,8 @@ import (
 	"unsafe"
 )
 
-func libc_strerror(int) *byte __asm__ ("strerror")
+//sysnb	strerror(errnum int) *byte
+//strerror(errnum int) *byte
 
 var errstr_lock sync.Mutex
 

libgo/syscalls/exec_stubs.go → libgo/go/syscall/exec_stubs.go

-// exec_stubs.go -- fork/exec stubs.
-
 // Copyright 2010 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
@@ -12,10 +10,6 @@ func ForkExec(argv0 string, argv []string, envv []string, dir string, fd []int)
 	return -1, ENOSYS;
 }
 
-func PtraceForkExec(argv0 string, argv []string, envv []string, dir string, fd []int) (pid int, err int) {
-	return -1, ENOSYS;
-}
-
 func Exec(argv0 string, argv []string, envv []string) (err int) {
 	return ENOSYS;
 }

libgo/go/syscall/exec_windows.go

+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Fork, exec, wait, etc.
+
+package syscall
+
+import (
+	"sync"
+	"unsafe"
+	"utf16"
+)
+
+var ForkLock sync.RWMutex
+
+// EscapeArg rewrites command line argument s as prescribed
+// in http://msdn.microsoft.com/en-us/library/ms880421.
+// This function returns "" (2 double quotes) if s is empty.
+// Alternatively, these transformations are done:
+// - every back slash (\) is doubled, but only if immediately
+//   followed by double quote (");
+// - every double quote (") is escaped by back slash (\);
+// - finally, s is wrapped with double quotes (arg -> "arg"),
+//   but only if there is space or tab inside s.
+func EscapeArg(s string) string {
+	if len(s) == 0 {
+		return "\"\""
+	}
+	n := len(s)
+	hasSpace := false
+	for i := 0; i < len(s); i++ {
+		switch s[i] {
+		case '"', '\\':
+			n++
+		case ' ', '\t':
+			hasSpace = true
+		}
+	}
+	if hasSpace {
+		n += 2
+	}
+	if n == len(s) {
+		return s
+	}
+
+	qs := make([]byte, n)
+	j := 0
+	if hasSpace {
+		qs[j] = '"'
+		j++
+	}
+	slashes := 0
+	for i := 0; i < len(s); i++ {
+		switch s[i] {
+		default:
+			slashes = 0
+			qs[j] = s[i]
+		case '\\':
+			slashes++
+			qs[j] = s[i]
+		case '"':
+			for ; slashes > 0; slashes-- {
+				qs[j] = '\\'
+				j++
+			}
+			qs[j] = '\\'
+			j++
+			qs[j] = s[i]
+		}
+		j++
+	}
+	if hasSpace {
+		for ; slashes > 0; slashes-- {
+			qs[j] = '\\'
+			j++
+		}
+		qs[j] = '"'
+		j++
+	}
+	return string(qs[:j])
+}
+
+// makeCmdLine builds a command line out of args by escaping "special"
+// characters and joining the arguments with spaces.
+func makeCmdLine(args []string) string {
+	var s string
+	for _, v := range args {
+		if s != "" {
+			s += " "
+		}
+		s += EscapeArg(v)
+	}
+	return s
+}
+
+// createEnvBlock converts an array of environment strings into
+// the representation required by CreateProcess: a sequence of NUL
+// terminated strings followed by a nil.
+// Last bytes are two UCS-2 NULs, or four NUL bytes.
+func createEnvBlock(envv []string) *uint16 {
+	if len(envv) == 0 {
+		return &utf16.Encode([]int("\x00\x00"))[0]
+	}
+	length := 0
+	for _, s := range envv {
+		length += len(s) + 1
+	}
+	length += 1
+
+	b := make([]byte, length)
+	i := 0
+	for _, s := range envv {
+		l := len(s)
+		copy(b[i:i+l], []byte(s))
+		copy(b[i+l:i+l+1], []byte{0})
+		i = i + l + 1
+	}
+	copy(b[i:i+1], []byte{0})
+
+	return &utf16.Encode([]int(string(b)))[0]
+}
+
+func CloseOnExec(fd Handle) {
+	SetHandleInformation(Handle(fd), HANDLE_FLAG_INHERIT, 0)
+}
+
+func SetNonblock(fd Handle, nonblocking bool) (errno int) {
+	return 0
+}
+
+// getFullPath retrieves the full path of the specified file.
+// Just a wrapper for Windows GetFullPathName api.
+func getFullPath(name string) (path string, err int) {
+	p := StringToUTF16Ptr(name)
+	buf := make([]uint16, 100)
+	n, err := GetFullPathName(p, uint32(len(buf)), &buf[0], nil)
+	if err != 0 {
+		return "", err
+	}
+	if n > uint32(len(buf)) {
+		// Windows is asking for bigger buffer.
+		buf = make([]uint16, n)
+		n, err = GetFullPathName(p, uint32(len(buf)), &buf[0], nil)
+		if err != 0 {
+			return "", err
+		}
+		if n > uint32(len(buf)) {
+			return "", EINVAL
+		}
+	}
+	return UTF16ToString(buf[:n]), 0
+}
+
+func isSlash(c uint8) bool {
+	return c == '\\' || c == '/'
+}
+
+func normalizeDir(dir string) (name string, err int) {
+	ndir, err := getFullPath(dir)
+	if err != 0 {
+		return "", err
+	}
+	if len(ndir) > 2 && isSlash(ndir[0]) && isSlash(ndir[1]) {
+		// dir cannot have \\server\share\path form
+		return "", EINVAL
+	}
+	return ndir, 0
+}
+
+func volToUpper(ch int) int {
+	if 'a' <= ch && ch <= 'z' {
+		ch += 'A' - 'a'
+	}
+	return ch
+}
+
+func joinExeDirAndFName(dir, p string) (name string, err int) {
+	if len(p) == 0 {
+		return "", EINVAL
+	}
+	if len(p) > 2 && isSlash(p[0]) && isSlash(p[1]) {
+		// \\server\share\path form
+		return p, 0
+	}
+	if len(p) > 1 && p[1] == ':' {
+		// has drive letter
+		if len(p) == 2 {
+			return "", EINVAL
+		}
+		if isSlash(p[2]) {
+			return p, 0
+		} else {
+			d, err := normalizeDir(dir)
+			if err != 0 {
+				return "", err
+			}
+			if volToUpper(int(p[0])) == volToUpper(int(d[0])) {
+				return getFullPath(d + "\\" + p[2:])
+			} else {
+				return getFullPath(p)
+			}
+		}
+	} else {
+		// no drive letter
+		d, err := normalizeDir(dir)
+		if err != 0 {
+			return "", err
+		}
+		if isSlash(p[0]) {
+			return getFullPath(d[:2] + p)
+		} else {
+			return getFullPath(d + "\\" + p)
+		}
+	}
+	// we shouldn't be here
+	return "", EINVAL
+}
+
+type ProcAttr struct {
+	Dir   string
+	Env   []string
+	Files []Handle
+	Sys   *SysProcAttr
+}
+
+type SysProcAttr struct {
+	HideWindow bool
+	CmdLine    string // used if non-empty, else the windows command line is built by escaping the arguments passed to StartProcess
+}
+
+var zeroProcAttr ProcAttr
+var zeroSysProcAttr SysProcAttr
+
+func StartProcess(argv0 string, argv []string, attr *ProcAttr) (pid, handle int, err int) {
+	if len(argv0) == 0 {
+		return 0, 0, EWINDOWS
+	}
+	if attr == nil {
+		attr = &zeroProcAttr
+	}
+	sys := attr.Sys
+	if sys == nil {
+		sys = &zeroSysProcAttr
+	}
+
+	if len(attr.Files) > 3 {
+		return 0, 0, EWINDOWS
+	}
+
+	if len(attr.Dir) != 0 {
+		// StartProcess assumes that argv0 is relative to attr.Dir,
+		// because it implies Chdir(attr.Dir) before executing argv0.
+		// Windows CreateProcess assumes the opposite: it looks for
+		// argv0 relative to the current directory, and, only once the new
+		// process is started, it does Chdir(attr.Dir). We are adjusting
+		// for that difference here by making argv0 absolute.
+		var err int
+		argv0, err = joinExeDirAndFName(attr.Dir, argv0)
+		if err != 0 {
+			return 0, 0, err
+		}
+	}
+	argv0p := StringToUTF16Ptr(argv0)
+
+	var cmdline string
+	// Windows CreateProcess takes the command line as a single string:
+	// use attr.CmdLine if set, else build the command line by escaping
+	// and joining each argument with spaces
+	if sys.CmdLine != "" {
+		cmdline = sys.CmdLine
+	} else {
+		cmdline = makeCmdLine(argv)
+	}
+
+	var argvp *uint16
+	if len(cmdline) != 0 {
+		argvp = StringToUTF16Ptr(cmdline)
+	}
+
+	var dirp *uint16
+	if len(attr.Dir) != 0 {
+		dirp = StringToUTF16Ptr(attr.Dir)
+	}
+
+	// Acquire the fork lock so that no other threads
+	// create new fds that are not yet close-on-exec
+	// before we fork.
+	ForkLock.Lock()
+	defer ForkLock.Unlock()
+
+	p, _ := GetCurrentProcess()
+	fd := make([]Handle, len(attr.Files))
+	for i := range attr.Files {
+		if attr.Files[i] > 0 {
+			err := DuplicateHandle(p, Handle(attr.Files[i]), p, &fd[i], 0, true, DUPLICATE_SAME_ACCESS)
+			if err != 0 {
+				return 0, 0, err
+			}
+			defer CloseHandle(Handle(fd[i]))
+		}
+	}
+	si := new(StartupInfo)
+	si.Cb = uint32(unsafe.Sizeof(*si))
+	si.Flags = STARTF_USESTDHANDLES
+	if sys.HideWindow {
+		si.Flags |= STARTF_USESHOWWINDOW
+		si.ShowWindow = SW_HIDE
+	}
+	si.StdInput = fd[0]
+	si.StdOutput = fd[1]
+	si.StdErr = fd[2]
+
+	pi := new(ProcessInformation)
+
+	err = CreateProcess(argv0p, argvp, nil, nil, true, CREATE_UNICODE_ENVIRONMENT, createEnvBlock(attr.Env), dirp, si, pi)
+	if err != 0 {
+		return 0, 0, err
+	}
+	defer CloseHandle(Handle(pi.Thread))
+
+	return int(pi.ProcessId), int(pi.Process), 0
+}
+
+func Exec(argv0 string, argv []string, envv []string) (err int) {
+	return EWINDOWS
+}

libgo/go/syscall/libcall_posix.go

+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// POSIX library calls.
+// This file is compiled as ordinary Go code,
+// but it is also input to mksyscall,
+// which parses the //sys lines and generates library call stubs.
+// Note that sometimes we use a lowercase //sys name and
+// wrap it in our own nicer implementation.
+
+package syscall
+
+import "unsafe"
+
+/*
+ * Wrapped
+ */
+
+//sysnb	pipe(p *[2]int) (errno int)
+//pipe(p *[2]int) int
+func Pipe(p []int) (errno int) {
+	if len(p) != 2 {
+		return EINVAL
+	}
+	var pp [2]int
+	errno = pipe(&pp)
+	p[0] = pp[0]
+	p[1] = pp[1]
+	return
+}
+
+//sys	utimes(path string, times *[2]Timeval) (errno int)
+//utimes(path *byte, times *[2]Timeval) int
+func Utimes(path string, tv []Timeval) (errno int) {
+	if len(tv) != 2 {
+		return EINVAL
+	}
+	return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
+}
+
+//sys	getcwd(buf *byte, size Size_t) (errno int)
+//getcwd(buf *byte, size Size_t) *byte
+
+const ImplementsGetwd = true
+
+func Getwd() (ret string, errno int) {
+	for len := Size_t(4096); ; len *= 2 {
+		b := make([]byte, len)
+		err := getcwd(&b[0], len)
+		if err == 0 {
+			i := 0;
+			for b[i] != 0 {
+				i++;
+			}
+			return string(b[0:i]), 0;
+		}
+		if err != ERANGE {
+			return "", err
+		}
+	}
+}
+
+//sysnb	getgroups(size int, list *Gid_t) (nn int, errno int)
+//getgroups(size int, list *Gid_t) int
+
+func Getgroups() (gids []int, errno int) {
+	n, err := getgroups(0, nil)
+	if err != 0 {
+		return nil, errno
+	}
+	if n == 0 {
+		return nil, 0
+	}
+
+	// Sanity check group count.  Max is 1<<16 on Linux.
+	if n < 0 || n > 1<<20 {
+		return nil, EINVAL
+	}
+
+	a := make([]Gid_t, n)
+	n, err = getgroups(n, &a[0])
+	if err != 0 {
+		return nil, errno
+	}
+	gids = make([]int, n)
+	for i, v := range a[0:n] {
+		gids[i] = int(v)
+	}
+	return
+}
+
+//sysnb	setgroups(n int, list *Gid_t) (errno int)
+//setgroups(n Size_t, list *Gid_t) int
+
+func Setgroups(gids []int) (errno int) {
+	if len(gids) == 0 {
+		return setgroups(0, nil)
+	}
+
+	a := make([]Gid_t, len(gids))
+	for i, v := range gids {
+		a[i] = Gid_t(v)
+	}
+	return setgroups(len(a), &a[0])
+}
+
+type WaitStatus uint32
+
+// The WaitStatus methods are implemented in C, to pick up the macros
+// #defines in <sys/wait.h>.
+
+func (w WaitStatus) Exited() bool
+func (w WaitStatus) Signaled() bool
+func (w WaitStatus) Stopped() bool
+func (w WaitStatus) Continued() bool
+func (w WaitStatus) CoreDump() bool
+func (w WaitStatus) ExitStatus() int
+func (w WaitStatus) Signal() int
+func (w WaitStatus) StopSignal() int
+func (w WaitStatus) TrapCause() int
+
+//sys	Mkfifo(path string, mode uint32) (errno int)
+//mkfifo(path *byte, mode Mode_t) int
+
+//sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, errno int)
+//select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) int
+
+const nfdbits = unsafe.Sizeof(fds_bits_type) * 8
+
+type FdSet struct {
+	Bits [(FD_SETSIZE + nfdbits - 1) / nfdbits]fds_bits_type
+}
+
+func FDSet(fd int, set *FdSet) {
+	set.Bits[fd / nfdbits] |= (1 << (uint)(fd % nfdbits))
+}
+
+func FDClr(fd int, set *FdSet) {
+	set.Bits[fd / nfdbits] &^= (1 << (uint)(fd % nfdbits))
+}
+
+func FDIsSet(fd int, set *FdSet) bool {
+	if set.Bits[fd / nfdbits] & (1 << (uint)(fd % nfdbits)) != 0 {
+		return true
+	} else {
+		return false
+	}
+}
+
+func FDZero(set *FdSet) {
+	for i := range set.Bits {
+		set.Bits[i] = 0
+	}
+}
+
+//sys	Access(path string, mode uint32) (errno int)
+//access(path *byte, mode int) int
+
+//sys	Chdir(path string) (errno int)
+//chdir(path *byte) int
+
+//sys	Chmod(path string, mode uint32) (errno int)
+//chmod(path *byte, mode Mode_t) int
+
+//sys	Chown(path string, uid int, gid int) (errno int)
+//chown(path *byte, uid Uid_t, gid Gid_t) int
+
+//sys	Chroot(path string) (errno int)
+//chroot(path *byte) int
+
+//sys	Close(fd int) (errno int)
+//close(fd int) int
+
+//sys	Creat(path string, mode uint32) (fd int, errno int)
+//creat(path *byte, mode Mode_t) int
+
+//sysnb	Dup(oldfd int) (fd int, errno int)
+//dup(oldfd int) int
+
+//sysnb	Dup2(oldfd int, newfd int) (fd int, errno int)
+//dup2(oldfd int, newfd int) int
+
+//sys	Exit(code int)
+//exit(code int)
+
+//sys	Fchdir(fd int) (errno int)
+//fchdir(fd int) int
+
+//sys	Fchmod(fd int, mode uint32) (errno int)
+//fchmod(fd int, mode Mode_t) int
+
+//sys	Fchown(fd int, uid int, gid int) (errno int)
+//fchown(fd int, uid Uid_t, gid Gid_t) int
+
+//sys	fcntl(fd int, cmd int, arg int) (val int, errno int)
+//fcntl(fd int, cmd int, arg int) int
+
+//sys	Fdatasync(fd int) (errno int)
+//fdatasync(fd int) int
+
+//sys	Flock(fd int, how int) (errno int)
+//flock(fd int, how int) int
+
+//sys	Fsync(fd int) (errno int)
+//fsync(fd int) int
+
+//sysnb Getegid() (egid int)
+//getegid() Gid_t
+
+//sysnb Geteuid() (euid int)
+//geteuid() Uid_t
+
+//sysnb Getgid() (gid int)
+//getgid() Gid_t
+
+//sysnb	Getpagesize() (pagesize int)
+//getpagesize() int
+
+//sysnb	Getpgid(pid int) (pgid int, errno int)
+//getpgid(pid Pid_t) Pid_t
+
+//sysnb	Getpgrp() (pid int)
+//getpgrp() Pid_t
+
+//sysnb	Getpid() (pid int)
+//getpid() Pid_t
+
+//sysnb	Getppid() (ppid int)
+//getppid() Pid_t
+
+// FIXME: mksysinfo Rlimit
+// //sysnb	Getrlimit(resource int, rlim *Rlimit) (errno int)
+// //getrlimit(resource int, rlim *Rlimit) int
+
+//sysnb	Getrusage(who int, rusage *Rusage) (errno int)
+//getrusage(who int, rusage *Rusage) int
+
+//sysnb	Gettid() (tid int)
+//gettid() Pid_t
+
+//sysnb	gettimeofday(tv *Timeval, tz *byte) (errno int)
+//gettimeofday(tv *Timeval, tz *byte) int
+func Gettimeofday(tv *Timeval) (errno int) {
+	return gettimeofday(tv, nil)
+}
+
+//sysnb Getuid() (uid int)
+//getuid() Uid_t
+
+//sysnb	Kill(pid int, sig int) (errno int)
+//kill(pid Pid_t, sig int) int
+
+//sys	Lchown(path string, uid int, gid int) (errno int)
+//lchown(path *byte, uid Uid_t, gid Gid_t) int
+
+//sys	Link(oldpath string, newpath string) (errno int)
+//link(oldpath *byte, newpath *byte) int
+
+//sys	Mkdir(path string, mode uint32) (errno int)
+//mkdir(path *byte, mode Mode_t) int
+
+//sys	Mknod(path string, mode uint32, dev int) (errno int)
+//mknod(path *byte, mode Mode_t, dev _dev_t) int
+
+//sys	Mount(source string, target string, fstype string, flags int, data string) (errno int)
+//mount(source *byte, target *byte, fstype *byte, flags _C_long, data *byte) int
+
+//sys	Nanosleep(time *Timespec, leftover *Timespec) (errno int)
+//nanosleep(time *Timespec, leftover *Timespec) int
+
+//sys	Pause() (errno int)
+//pause() int
+
+//sys	Read(fd int, p []byte) (n int, errno int)
+//read(fd int, buf *byte, count Size_t) Ssize_t
+
+//sys	Readlink(path string, buf []byte) (n int, errno int)
+//readlink(path *byte, buf *byte, bufsiz Size_t) Ssize_t
+
+//sys	Rename(oldpath string, newpath string) (errno int)
+//rename(oldpath *byte, newpath *byte) int
+
+//sys	Rmdir(path string) (errno int)
+//rmdir(path *byte) int
+
+//sys	Setdomainname(p []byte) (errno int)
+//setdomainname(name *byte, len Size_t) int
+
+//sys	Sethostname(p []byte) (errno int)
+//sethostname(name *byte, len Size_t) int
+
+//sysnb	Setgid(gid int) (errno int)
+//setgid(gid Gid_t) int
+
+//sysnb Setregid(rgid int, egid int) (errno int)
+//setregid(rgid Gid_t, egid Gid_t) int
+
+//sysnb	Setpgid(pid int, pgid int) (errno int)
+//setpgid(pid Pid_t, pgid Pid_t) int
+
+//sysnb	Setreuid(ruid int, euid int) (errno int)
+//setreuid(ruid Uid_t, euid Uid_t) int
+
+// FIXME: mksysinfo Rlimit
+// //sysnb	Setrlimit(resource int, rlim *Rlimit) (errno int)
+// //setrlimit(resource int, rlim *Rlimit) int
+
+//sysnb	Setsid() (pid int, errno int)
+//setsid() Pid_t
+
+//sysnb	settimeofday(tv *Timeval, tz *byte) (errno int)
+//settimeofday(tv *Timeval, tz *byte) int
+
+func Settimeofday(tv *Timeval) (errno int) {
+	return settimeofday(tv, nil)
+}
+
+//sysnb	Setuid(uid int) (errno int)
+//setuid(uid Uid_t) int
+
+//sys	Symlink(oldpath string, newpath string) (errno int)
+//symlink(oldpath *byte, newpath *byte) int
+
+//sys	Sync()
+//sync()
+
+// FIXME: mksysinfo Time_t
+// //sysnb	Time(t *Time_t) (tt Time_t, errno int)
+// //time(t *Time_t) Time_t
+
+// FIXME: mksysinfo Tms
+// //sysnb	Times(tms *Tms) (ticks uintptr, errno int)
+// //times(tms *Tms) _clock_t
+
+//sysnb	Umask(mask int) (oldmask int)
+//umark(mask Mode_t) Mode_t
+
+//sys	Unlink(path string) (errno int)
+//unlink(path *byte) int
+
+// FIXME: mksysinfo Utimbuf
+// //sys	Utime(path string, buf *Utimbuf) (errno int)
+// //utime(path *byte, buf *Utimbuf) int
+
+//sys	Write(fd int, p []byte) (n int, errno int)
+//write(fd int, buf *byte, count Size_t) Ssize_t
+
+//sys	munmap(addr uintptr, length uintptr) (errno int)
+//munmap(addr *byte, length Size_t) int
+
+//sys Madvise(b []byte, advice int) (errno int)
+//madvise(addr *byte, len Size_t, advice int) int
+
+//sys	Mprotect(b []byte, prot int) (errno int)
+//mprotect(addr *byte, len Size_t, prot int) int
+
+//sys	Mlock(b []byte) (errno int)
+//mlock(addr *byte, len Size_t) int
+
+//sys	Munlock(b []byte) (errno int)
+//munlock(addr *byte, len Size_t) int
+
+//sys	Mlockall(flags int) (errno int)
+//mlockall(flags int) int
+
+//sys	Munlockall() (errno int)
+//munlockall() int
+
+func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
+
+func NsecToTimespec(nsec int64) (ts Timespec) {
+	ts.Sec = Timespec_sec_t(nsec / 1e9)
+	ts.Nsec = Timespec_nsec_t(nsec % 1e9)
+	return
+}
+
+func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
+
+func NsecToTimeval(nsec int64) (tv Timeval) {
+	nsec += 999 // round up to microsecond
+	tv.Sec = Timeval_sec_t(nsec / 1e9)
+	tv.Usec = Timeval_usec_t(nsec % 1e9 / 1e3)
+	return
+}

libgo/go/syscall/libcall_posix_largefile.go

+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// POSIX library calls on systems which use the largefile interface.
+
+package syscall
+
+//sys	Fstat(fd int, stat *Stat_t) (errno int)
+//fstat64(fd int, stat *Stat_t) int
+
+//sys	Ftruncate(fd int, length int64) (errno int)
+//ftruncate64(fd int, length Offset_t) int
+
+//sys	Lstat(path string, stat *Stat_t) (errno int)
+//lstat64(path *byte, stat *Stat_t) int
+
+//sys	mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, errno int)
+//mmap64(addr *byte, length Size_t, prot int, flags int, fd int, offset Offset_t) *byte
+
+//sys	Open(path string, mode int, perm uint32) (fd int, errno int)
+//open64(path *byte, mode int, perm Mode_t) int
+
+//sys	Pread(fd int, p []byte, offset int64) (n int, errno int)
+//pread64(fd int, buf *byte, count Size_t, offset Offset_t) Ssize_t
+
+//sys	Pwrite(fd int, p []byte, offset int64) (n int, errno int)
+//pwrite64(fd int, buf *byte, count Size_t, offset Offset_t) Ssize_t
+
+//sys	Seek(fd int, offset int64, whence int) (off int64, errno int)
+//lseek64(fd int, offset Offset_t, whence int) Offset_t
+
+//sys	Stat(path string, stat *Stat_t) (errno int)
+//stat64(path *byte, stat *Stat_t) int
+
+//sys	Truncate(path string, length int64) (errno int)
+//truncate64(path *byte, length Offset_t) int

libgo/go/syscall/libcall_posix_regfile.go

+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// POSIX library calls on systems which do not use the largefile
+// interface.
+
+package syscall
+
+//sys	Fstat(fd int, stat *Stat_t) (errno int)
+//fstat(fd int, stat *Stat_t) int
+
+//sys	Ftruncate(fd int, length int64) (errno int)
+//ftruncate(fd int, length Offset_t) int
+
+//sys	Lstat(path string, stat *Stat_t) (errno int)
+//lstat(path *byte, stat *Stat_t) int
+
+//sys	mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, errno int)
+//mmap(addr *byte, length Size_t, prot int, flags int, fd int, offset Offset_t) *byte
+
+//sys	Open(path string, mode int, perm uint32) (fd int, errno int)
+//open(path *byte, mode int, perm Mode_t) int
+
+//sys	Pread(fd int, p []byte, offset int64) (n int, errno int)
+//pread(fd int, buf *byte, count Size_t, offset Offset_t) Ssize_t
+
+//sys	Pwrite(fd int, p []byte, offset int64) (n int, errno int)
+//pwrite(fd int, buf *byte, count Size_t, offset Offset_t) Ssize_t
+
+//sys	Seek(fd int, offset int64, whence int) (off int64, errno int)
+//lseek(fd int, offset Offset_t, whence int) Offset_t
+
+//sys	Stat(path string, stat *Stat_t) (errno int)
+//stat(path *byte, stat *Stat_t) int
+
+//sys	Truncate(path string, length int64) (errno int)
+//truncate(path *byte, length Offset_t) int

libgo/syscalls/syscall_solaris.go → libgo/go/syscall/libcall_solaris_386.go

-// syscall_solaris.go -- Solaris 2 specific syscall interface.
-
 // Copyright 2011 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package syscall
+
+// 32-bit Solaris 2/x86 needs to use _nuname internally, cf. <sys/utsname.h>.
+//sysnb	Uname(buf *Utsname) (errno int)
+//_nuname(buf *Utsname) int

libgo/syscalls/syscall_uname.go → libgo/go/syscall/libcall_support.go

@@ -2,6 +2,11 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// Declarations for functions which are actually written in C.
+
 package syscall
 
-func libc_uname(buf *Utsname) (errno int) __asm__("uname")
+func entersyscall()
+func exitsyscall()
+func GetErrno() int
+func SetErrno(int)

libgo/syscalls/syscall_rtems.go → libgo/go/syscall/libcall_uname.go

-// syscall_rtems.go -- RTEMS specific syscall interface.
-
 // Copyright 2011 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package syscall
+
+//sysnb	Uname(buf *Utsname) (errno int)
+//uname(buf *Utsname) int

libgo/syscalls/waitpid.go → libgo/go/syscall/libcall_wait4.go

-// waitpid.go -- Wait4 for systems without wait4, but with waitpid.
-
-// Copyright 2011 The Go Authors. All rights reserved.
+// Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// For systems with the wait4 library call.
+
 package syscall
 
-func libc_waitpid(Pid_t, *int, int) Pid_t __asm__ ("waitpid")
+//sys	wait4(pid Pid_t, status *int, options int, rusage *Rusage) (wpid Pid_t, errno int)
+//wait4(pid Pid_t, status *int, options int, rusage *Rusage) Pid_t
 
 func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, errno int) {
 	var status int
-	r := libc_waitpid(Pid_t(pid), &status, options)
+	r, err := wait4(Pid_t(pid), &status, options, rusage)
 	wpid = int(r)
-	if r < 0 {
-		errno = GetErrno()
-	}
+	errno = err
 	if wstatus != nil {
 		*wstatus = WaitStatus(status)
 	}

libgo/syscalls/wait4.go → libgo/go/syscall/libcall_waitpid.go

-// wait4.go -- Wait4 for systems with wait4.
-
-// Copyright 2011 The Go Authors. All rights reserved.
+// Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// For systems with the waitpid library call.
+
 package syscall
 
-func libc_wait4(Pid_t, *int, int, *Rusage) Pid_t __asm__ ("wait4")
+//sys	waitpid(pid Pid_t, status *int, options int) (wpid Pid_t, errno int)
+//waitpid(pid Pid_t, status *int, options int) Pid_t
 
 func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, errno int) {
 	var status int
-	r := libc_wait4(Pid_t(pid), &status, options, rusage)
+	r, err := waitpid(Pid_t(pid), &status, options)
 	wpid = int(r)
-	if r < 0 {
-		errno = GetErrno()
-	}
+	errno = err
 	if wstatus != nil {
 		*wstatus = WaitStatus(status)
 	}

libgo/go/syscall/lsf_linux.go

+// Copyright 2011 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Linux socket filter
+
+package syscall
+
+import (
+	"unsafe"
+)
+
+func LsfStmt(code, k int) *SockFilter {
+	return &SockFilter{Code: uint16(code), K: uint32(k)}
+}
+
+func LsfJump(code, k, jt, jf int) *SockFilter {
+	return &SockFilter{Code: uint16(code), Jt: uint8(jt), Jf: uint8(jf), K: uint32(k)}
+}
+
+func LsfSocket(ifindex, proto int) (int, int) {
+	var lsall SockaddrLinklayer
+	s, e := Socket(AF_PACKET, SOCK_RAW, proto)
+	if e != 0 {
+		return 0, e
+	}
+	p := (*[2]byte)(unsafe.Pointer(&lsall.Protocol))
+	p[0] = byte(proto >> 8)
+	p[1] = byte(proto)
+	lsall.Ifindex = ifindex
+	e = Bind(s, &lsall)
+	if e != 0 {
+		Close(s)
+		return 0, e
+	}
+	return s, 0
+}
+
+type iflags struct {
+	name  [IFNAMSIZ]byte
+	flags uint16
+}
+
+func SetLsfPromisc(name string, m bool) int {
+	s, e := Socket(AF_INET, SOCK_DGRAM, 0)
+	if e != 0 {
+		return e
+	}
+	defer Close(s)
+	var ifl iflags
+	copy(ifl.name[:], []byte(name))
+	_, _, ep := Syscall(SYS_IOCTL, uintptr(s), SIOCGIFFLAGS, uintptr(unsafe.Pointer(&ifl)))
+	if e := int(ep); e != 0 {
+		return e
+	}
+	if m {
+		ifl.flags |= uint16(IFF_PROMISC)
+	} else {
+		ifl.flags &= ^uint16(IFF_PROMISC)
+	}
+	_, _, ep = Syscall(SYS_IOCTL, uintptr(s), SIOCSIFFLAGS, uintptr(unsafe.Pointer(&ifl)))
+	if e := int(ep); e != 0 {
+		return e
+	}
+	return 0
+}
+
+func AttachLsf(fd int, i []SockFilter) int {
+	var p SockFprog
+	p.Len = uint16(len(i))
+	p.Filter = (*SockFilter)(unsafe.Pointer(&i[0]))
+	return setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, uintptr(unsafe.Pointer(&p)), unsafe.Sizeof(p))
+}
+
+func DetachLsf(fd int) int {
+	var dummy int
+	return setsockopt(fd, SOL_SOCKET, SO_DETACH_FILTER, uintptr(unsafe.Pointer(&dummy)), unsafe.Sizeof(dummy))
+}

libgo/go/syscall/mksyscall.awk

+# Copyright 2011 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+# This AWK script reads a Go file with comments describing syscall
+# functions and the C routines they map to.  It generates the Go code
+# which calls the C routines.
+
+# The syscall functins are marked by lines beginning with "//sys" and
+# read like func declarations if //sys is replaced by func, but:
+#	* The parameter lists must give a name for each argument.
+#	  This includes return parameters.
+#	* The parameter lists must give a type for each argument:
+#	   the (x, y, z int) shorthand is not allowed.
+#	* If the return parameter is an error number, it must be named errno.
+
+# A line beginning with //sysnb is like //sys, except that the
+# goroutine will not be suspended during the execution of the library
+# call.  This must only be used for library calls which can never
+# block, as otherwise the library call could cause all goroutines to
+# hang.
+
+# After the //sys or //sysnb line comes a second line which describes
+# the C function.  The name must be the name of the function in the C
+# library, and may be the same as the Go function.  The limitations on
+# the argument list are the same as for the //sys line, but there must
+# be at most one result parameter, and it must be given as just a
+# type, without a name.
+
+BEGIN {
+    print "// This file was automatically generated by mksyscall.awk"
+    print ""
+    print "package syscall"
+    print ""
+    print "import \"unsafe\""
+    print ""
+    status = 0
+}
+
+/^\/\/sys/ {
+    if ($1 == "//sysnb") {
+	blocking = 0
+    } else {
+	blocking = 1
+    }
+
+    if (match($0, "//sys(nb)?[ 	]*([a-zA-Z0-9_]+)\\(([^()]*)\\) *(\\(([^()]+)\\))?", gosig) == 0) {
+	print "unmatched line:", $0 | "cat 1>&2"
+	status = 1
+	next
+    }
+
+    gofnname = gosig[2]
+    gofnparams = gosig[3]
+    gofnresults = gosig[5]
+
+    getline
+
+    if (match($0, "//([a-zA-Z0-9_]+)\\(([^()]*)\\) *(.*)$", csig) == 0) {
+	print "unmatched C line", $0, "after", gofnname | "cat 1>&2"
+	status = 1
+	next
+    }
+
+    cfnname = csig[1]
+    cfnparams = csig[2]
+    cfnresult = csig[3]
+
+    printf("// Automatically generated wrapper for %s/%s\n", gofnname, cfnname)
+    printf("func c_%s(%s) %s%s__asm__(\"%s\")\n",
+	   cfnname, cfnparams, cfnresult, cfnresult == "" ? "" : " ", cfnname)
+    printf("func %s(%s) %s%s{\n",
+	   gofnname, gofnparams, gosig[4], gosig[4] == "" ? "" : " ")
+
+    if (blocking) {
+	print "\tentersyscall()"
+    }
+
+    loc = gofnname "/" cfnname ":"
+
+    split(gofnparams, goargs, ", *")
+    split(cfnparams, cargs, ", *")
+    args = ""
+    carg = 1
+    for (goarg = 1; goargs[goarg] != ""; goarg++) {
+	if (cargs[carg] == "") {
+	    print loc, "not enough C parameters"
+	}
+
+	if (args != "") {
+	    args = args ", "
+	}
+
+	if (match(goargs[goarg], "^([^ ]*) ([^ ]*)$", goparam) == 0) {
+	    print loc, "bad parameter:", goargs[goarg] | "cat 1>&2"
+	    status = 1
+	    next
+	}
+
+	goname = goparam[1]
+	gotype = goparam[2]
+
+	if (match(cargs[carg], "^([^ ]*) ([^ ]*)$", cparam) == 0) {
+	    print loc, "bad C parameter:", cargs[carg] | "cat 1>&2"
+	    status = 1
+	    next
+	}
+
+	ctype = cparam[2]
+
+	if (gotype ~ /^\*/) {
+	    if (gotype != ctype) {
+		print loc, "Go/C pointer type mismatch:", gotype, ctype | "cat 1>&2"
+		status = 1
+		next
+	    }
+	    args = args goname
+	} else if (gotype == "string") {
+	    if (ctype != "*byte") {
+		print loc, "Go string not matched to C *byte:", gotype, ctype | "cat 1>&2"
+		status = 1
+		next
+	    }
+	    args = args "StringBytePtr(" goname ")"
+	} else if (gotype ~ /^\[\](.*)/) {
+	    if (ctype !~ /^\*/ || cargs[carg + 1] == "") {
+		print loc, "bad C type for slice:", gotype, ctype | "cat 1>&2"
+		status = 1
+		next
+	    }
+
+	    # Convert a slice into a pair of pointer, length.
+	    # Don't try to take the address of the zeroth element of a
+	    # nil slice.
+	    printf("\tvar _p%d %s\n", goarg, ctype)
+	    printf("\tif len(%s) > 0 {\n", goname)
+	    printf("\t\t_p%d = (%s)(unsafe.Pointer(&%s[0]))\n", goarg, ctype, goname)
+	    printf("\t} else {\n")
+	    printf("\t\t_p%d = (%s)(unsafe.Pointer(&_zero))\n", goarg, ctype)
+	    printf("\t}\n")
+
+	    ++carg
+	    if (match(cargs[carg], "^([^ ]*) ([^ ]*)$", cparam) == 0) {
+		print loc, "bad C parameter:", cargs[carg] | "cat 1>&2"
+		status = 1
+		next
+	    }
+
+	    args = sprintf("%s_p%d, %s(len(%s))", args, goarg, cparam[2], goname)
+	} else if (gotype == "uintptr" && ctype ~ /^\*/) {
+	    args = sprintf("%s(%s)(unsafe.Pointer(%s))", args, ctype, goname)
+	} else {
+	    args = sprintf("%s%s(%s)", args, ctype, goname)
+	}
+
+	carg++
+    }
+
+    if (cargs[carg] != "") {
+	print loc, "too many C parameters" | "cat 1>&2"
+	status = 1
+	next
+    }
+
+    printf("\t")
+    if (gofnresults != "") {
+	printf("_r := ")
+    }
+    printf("c_%s(%s)\n", cfnname, args)
+
+    if (gofnresults != "") {
+	fields = split(gofnresults, goresults, ", *")
+	if (fields > 2) {
+	    print loc, "too many Go results" | "cat 1>&2"
+	    status = 1
+	    next
+	}
+	usedr = 0
+	for (goresult = 1; goresults[goresult] != ""; goresult++) {
+	    if (match(goresults[goresult], "^([^ ]*) ([^ ]*)$", goparam) == 0) {
+		print loc, "bad result:", goresults[goresult] | "cat 1>&2"
+		status = 1
+		next
+	    }
+
+	    goname = goparam[1]
+	    gotype = goparam[2]
+
+	    if (goname == "errno") {
+		if (cfnresult ~ /^\*/) {
+		    print "\tif _r == nil {"
+		} else {
+		    print "\tif _r < 0 {"
+		}
+		print "\t\terrno = GetErrno()"
+		print "\t}"
+	    } else if (gotype == "uintptr" && cfnresult ~ /^\*/) {
+		printf("\t%s = (%s)(unsafe.Pointer(_r))\n", goname, gotype)
+	    } else {
+		if (usedr) {
+		    print loc, "two parameters but no errno parameter" | "cat 1>&2"
+		    status = 1
+		    next
+		}
+		printf("\t%s = (%s)(_r)\n", goname, gotype)
+		usedr = 1
+	    }
+	}
+    }
+
+    if (blocking) {
+	print "\texitsyscall()"
+    }
+
+    if (gofnresults != "") {
+	print "\treturn"
+    }
+
+    print "}"
+
+    print ""
+
+    next
+}
+
+{ next }
+
+END {
+    if (status != 0) {
+	print "*** mksyscall.awk failed" | "cat 1>&2"
+	exit status
+    }
+}

libgo/syscalls/netlink_linux.go → libgo/go/syscall/netlink_linux.go

@@ -195,10 +195,12 @@ func ParseNetlinkRouteAttr(msg *NetlinkMessage) ([]NetlinkRouteAttr, int) {
 	)
 
 	switch msg.Header.Type {
-	case RTM_NEWLINK:
+	case RTM_NEWLINK, RTM_DELLINK:
 		buf = msg.Data[SizeofIfInfomsg:]
-	case RTM_NEWADDR:
+	case RTM_NEWADDR, RTM_DELADDR:
 		buf = msg.Data[SizeofIfAddrmsg:]
+	case RTM_NEWROUTE, RTM_DELROUTE:
+		buf = msg.Data[SizeofRtMsg:]
 	default:
 		return nil, EINVAL
 	}

libgo/go/syscall/route_bsd.go

+// Copyright 2011 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin freebsd openbsd
+
+// Routing sockets and messages
+
+package syscall
+
+import (
+	"unsafe"
+)
+
+// Round the length of a raw sockaddr up to align it properly.
+func rsaAlignOf(salen int) int {
+	salign := sizeofPtr
+	// NOTE: It seems like 64-bit Darwin kernel still requires 32-bit
+	// aligned access to BSD subsystem.
+	if darwinAMD64 {
+		salign = 4
+	}
+	if salen == 0 {
+		return salign
+	}
+	return (salen + salign - 1) & ^(salign - 1)
+}
+
+// RouteRIB returns routing information base, as known as RIB,
+// which consists of network facility information, states and
+// parameters.
+func RouteRIB(facility, param int) ([]byte, int) {
+	var (
+		tab []byte
+		e   int
+	)
+
+	mib := []_C_int{CTL_NET, AF_ROUTE, 0, 0, _C_int(facility), _C_int(param)}
+
+	// Find size.
+	n := uintptr(0)
+	if e = sysctl(mib, nil, &n, nil, 0); e != 0 {
+		return nil, e
+	}
+	if n == 0 {
+		return nil, 0
+	}
+
+	tab = make([]byte, n)
+	if e = sysctl(mib, &tab[0], &n, nil, 0); e != 0 {
+		return nil, e
+	}
+
+	return tab[:n], 0
+}
+
+// RoutingMessage represents a routing message.
+type RoutingMessage interface {
+	sockaddr() []Sockaddr
+}
+
+const anyMessageLen = int(unsafe.Sizeof(anyMessage{}))
+
+type anyMessage struct {
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+}
+
+// RouteMessage represents a routing message containing routing
+// entries.
+type RouteMessage struct {
+	Header RtMsghdr
+	Data   []byte
+}
+
+const rtaRtMask = RTA_DST | RTA_GATEWAY | RTA_NETMASK | RTA_GENMASK
+
+func (m *RouteMessage) sockaddr() []Sockaddr {
+	var (
+		af  int
+		sas [4]Sockaddr
+	)
+
+	buf := m.Data[:]
+	for i := uint(0); i < RTAX_MAX; i++ {
+		if m.Header.Addrs&rtaRtMask&(1<<i) == 0 {
+			continue
+		}
+		rsa := (*RawSockaddr)(unsafe.Pointer(&buf[0]))
+		switch i {
+		case RTAX_DST, RTAX_GATEWAY:
+			sa, e := anyToSockaddr((*RawSockaddrAny)(unsafe.Pointer(rsa)))
+			if e != 0 {
+				return nil
+			}
+			if i == RTAX_DST {
+				af = int(rsa.Family)
+			}
+			sas[i] = sa
+		case RTAX_NETMASK, RTAX_GENMASK:
+			switch af {
+			case AF_INET:
+				rsa4 := (*RawSockaddrInet4)(unsafe.Pointer(&buf[0]))
+				sa := new(SockaddrInet4)
+				for j := 0; rsa4.Len > 0 && j < int(rsa4.Len)-int(unsafe.Offsetof(rsa4.Addr)); j++ {
+					sa.Addr[j] = rsa4.Addr[j]
+				}
+				sas[i] = sa
+			case AF_INET6:
+				rsa6 := (*RawSockaddrInet6)(unsafe.Pointer(&buf[0]))
+				sa := new(SockaddrInet6)
+				for j := 0; rsa6.Len > 0 && j < int(rsa6.Len)-int(unsafe.Offsetof(rsa6.Addr)); j++ {
+					sa.Addr[j] = rsa6.Addr[j]
+				}
+				sas[i] = sa
+			}
+		}
+		buf = buf[rsaAlignOf(int(rsa.Len)):]
+	}
+
+	return sas[:]
+}
+
+// InterfaceMessage represents a routing message containing
+// network interface entries.
+type InterfaceMessage struct {
+	Header IfMsghdr
+	Data   []byte
+}
+
+func (m *InterfaceMessage) sockaddr() (sas []Sockaddr) {
+	if m.Header.Addrs&RTA_IFP == 0 {
+		return nil
+	}
+	sa, e := anyToSockaddr((*RawSockaddrAny)(unsafe.Pointer(&m.Data[0])))
+	if e != 0 {
+		return nil
+	}
+	return append(sas, sa)
+}
+
+// InterfaceAddrMessage represents a routing message containing
+// network interface address entries.
+type InterfaceAddrMessage struct {
+	Header IfaMsghdr
+	Data   []byte
+}
+
+const rtaIfaMask = RTA_IFA | RTA_NETMASK | RTA_BRD
+
+func (m *InterfaceAddrMessage) sockaddr() (sas []Sockaddr) {
+	if m.Header.Addrs&rtaIfaMask == 0 {
+		return nil
+	}
+
+	buf := m.Data[:]
+	for i := uint(0); i < RTAX_MAX; i++ {
+		if m.Header.Addrs&rtaIfaMask&(1<<i) == 0 {
+			continue
+		}
+		rsa := (*RawSockaddr)(unsafe.Pointer(&buf[0]))
+		switch i {
+		case RTAX_IFA:
+			sa, e := anyToSockaddr((*RawSockaddrAny)(unsafe.Pointer(rsa)))
+			if e != 0 {
+				return nil
+			}
+			sas = append(sas, sa)
+		case RTAX_NETMASK, RTAX_BRD:
+			// nothing to do
+		}
+		buf = buf[rsaAlignOf(int(rsa.Len)):]
+	}
+
+	return sas
+}
+
+// ParseRoutingMessage parses buf as routing messages and returns
+// the slice containing the RoutingMessage interfaces.
+func ParseRoutingMessage(buf []byte) (msgs []RoutingMessage, errno int) {
+	for len(buf) >= anyMessageLen {
+		any := (*anyMessage)(unsafe.Pointer(&buf[0]))
+		if any.Version != RTM_VERSION {
+			return nil, EINVAL
+		}
+		msgs = append(msgs, any.toRoutingMessage(buf))
+		buf = buf[any.Msglen:]
+	}
+	return msgs, 0
+}
+
+// ParseRoutingMessage parses msg's payload as raw sockaddrs and
+// returns the slice containing the Sockaddr interfaces.
+func ParseRoutingSockaddr(msg RoutingMessage) (sas []Sockaddr, errno int) {
+	return append(sas, msg.sockaddr()...), 0
+}

libgo/go/syscall/route_darwin.go

+// Copyright 2011 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Routing sockets and messages for Darwin
+
+package syscall
+
+import (
+	"unsafe"
+)
+
+func (any *anyMessage) toRoutingMessage(buf []byte) RoutingMessage {
+	switch any.Type {
+	case RTM_ADD, RTM_DELETE, RTM_CHANGE, RTM_GET, RTM_LOSING, RTM_REDIRECT, RTM_MISS, RTM_LOCK, RTM_RESOLVE:
+		p := (*RouteMessage)(unsafe.Pointer(any))
+		rtm := &RouteMessage{}
+		rtm.Header = p.Header
+		rtm.Data = buf[SizeofRtMsghdr:any.Msglen]
+		return rtm
+	case RTM_IFINFO:
+		p := (*InterfaceMessage)(unsafe.Pointer(any))
+		ifm := &InterfaceMessage{}
+		ifm.Header = p.Header
+		ifm.Data = buf[SizeofIfMsghdr:any.Msglen]
+		return ifm
+	case RTM_NEWADDR, RTM_DELADDR:
+		p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
+		ifam := &InterfaceAddrMessage{}
+		ifam.Header = p.Header
+		ifam.Data = buf[SizeofIfaMsghdr:any.Msglen]
+		return ifam
+	case RTM_NEWMADDR2, RTM_DELMADDR:
+		p := (*InterfaceMulticastAddrMessage)(unsafe.Pointer(any))
+		ifmam := &InterfaceMulticastAddrMessage{}
+		ifmam.Header = p.Header
+		ifmam.Data = buf[SizeofIfmaMsghdr2:any.Msglen]
+		return ifmam
+	}
+	return nil
+}
+
+// InterfaceMulticastAddrMessage represents a routing message
+// containing network interface address entries.
+type InterfaceMulticastAddrMessage struct {
+	Header IfmaMsghdr2
+	Data   []byte
+}
+
+const rtaIfmaMask = RTA_GATEWAY | RTA_IFP | RTA_IFA
+
+func (m *InterfaceMulticastAddrMessage) sockaddr() (sas []Sockaddr) {
+	if m.Header.Addrs&rtaIfmaMask == 0 {
+		return nil
+	}
+
+	buf := m.Data[:]
+	for i := uint(0); i < RTAX_MAX; i++ {
+		if m.Header.Addrs&rtaIfmaMask&(1<<i) == 0 {
+			continue
+		}
+		rsa := (*RawSockaddr)(unsafe.Pointer(&buf[0]))
+		switch i {
+		case RTAX_IFA:
+			sa, e := anyToSockaddr((*RawSockaddrAny)(unsafe.Pointer(rsa)))
+			if e != 0 {
+				return nil
+			}
+			sas = append(sas, sa)
+		case RTAX_GATEWAY, RTAX_IFP:
+			// nothing to do
+		}
+		buf = buf[rsaAlignOf(int(rsa.Len)):]
+	}
+
+	return sas
+}

libgo/go/syscall/route_freebsd.go

+// Copyright 2011 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Routing sockets and messages for FreeBSD
+
+package syscall
+
+import (
+	"unsafe"
+)
+
+func (any *anyMessage) toRoutingMessage(buf []byte) RoutingMessage {
+	switch any.Type {
+	case RTM_ADD, RTM_DELETE, RTM_CHANGE, RTM_GET, RTM_LOSING, RTM_REDIRECT, RTM_MISS, RTM_LOCK, RTM_RESOLVE:
+		p := (*RouteMessage)(unsafe.Pointer(any))
+		rtm := &RouteMessage{}
+		rtm.Header = p.Header
+		rtm.Data = buf[SizeofRtMsghdr:any.Msglen]
+		return rtm
+	case RTM_IFINFO:
+		p := (*InterfaceMessage)(unsafe.Pointer(any))
+		ifm := &InterfaceMessage{}
+		ifm.Header = p.Header
+		ifm.Data = buf[SizeofIfMsghdr:any.Msglen]
+		return ifm
+	case RTM_NEWADDR, RTM_DELADDR:
+		p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
+		ifam := &InterfaceAddrMessage{}
+		ifam.Header = p.Header
+		ifam.Data = buf[SizeofIfaMsghdr:any.Msglen]
+		return ifam
+	case RTM_NEWMADDR, RTM_DELMADDR:
+		p := (*InterfaceMulticastAddrMessage)(unsafe.Pointer(any))
+		ifmam := &InterfaceMulticastAddrMessage{}
+		ifmam.Header = p.Header
+		ifmam.Data = buf[SizeofIfmaMsghdr:any.Msglen]
+		return ifmam
+	}
+	return nil
+}
+
+// InterfaceMulticastAddrMessage represents a routing message
+// containing network interface address entries.
+type InterfaceMulticastAddrMessage struct {
+	Header IfmaMsghdr
+	Data   []byte
+}
+
+const rtaIfmaMask = RTA_GATEWAY | RTA_IFP | RTA_IFA
+
+func (m *InterfaceMulticastAddrMessage) sockaddr() (sas []Sockaddr) {
+	if m.Header.Addrs&rtaIfmaMask == 0 {
+		return nil
+	}
+
+	buf := m.Data[:]
+	for i := uint(0); i < RTAX_MAX; i++ {
+		if m.Header.Addrs&rtaIfmaMask&(1<<i) == 0 {
+			continue
+		}
+		rsa := (*RawSockaddr)(unsafe.Pointer(&buf[0]))
+		switch i {
+		case RTAX_IFA:
+			sa, e := anyToSockaddr((*RawSockaddrAny)(unsafe.Pointer(rsa)))
+			if e != 0 {
+				return nil
+			}
+			sas = append(sas, sa)
+		case RTAX_GATEWAY, RTAX_IFP:
+			// nothing to do
+		}
+		buf = buf[rsaAlignOf(int(rsa.Len)):]
+	}
+
+	return sas
+}

libgo/go/syscall/route_openbsd.go

+// Copyright 2011 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Routing sockets and messages for OpenBSD
+
+package syscall
+
+import (
+	"unsafe"
+)
+
+func (any *anyMessage) toRoutingMessage(buf []byte) RoutingMessage {
+	switch any.Type {
+	case RTM_ADD, RTM_DELETE, RTM_CHANGE, RTM_GET, RTM_LOSING, RTM_REDIRECT, RTM_MISS, RTM_LOCK, RTM_RESOLVE:
+		p := (*RouteMessage)(unsafe.Pointer(any))
+		rtm := &RouteMessage{}
+		rtm.Header = p.Header
+		rtm.Data = buf[SizeofRtMsghdr:any.Msglen]
+		return rtm
+	case RTM_IFINFO:
+		p := (*InterfaceMessage)(unsafe.Pointer(any))
+		ifm := &InterfaceMessage{}
+		ifm.Header = p.Header
+		ifm.Data = buf[SizeofIfMsghdr:any.Msglen]
+		return ifm
+	case RTM_NEWADDR, RTM_DELADDR:
+		p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
+		ifam := &InterfaceAddrMessage{}
+		ifam.Header = p.Header
+		ifam.Data = buf[SizeofIfaMsghdr:any.Msglen]
+		return ifam
+	}
+	return nil
+}

libgo/syscalls/sleep_rtems.go → libgo/go/syscall/sleep_rtems.go

@@ -6,14 +6,8 @@
 
 package syscall
 
-func libc_nanosleep(req *Timespec, rem *Timespec) int __asm__ ("nanosleep")
-
 func Sleep(nsec int64) (errno int) {
-	errno = 0
 	ts := NsecToTimespec(nsec)
-	r := libc_nanosleep(&ts, nil)
-	if r < 0 {
-		errno = GetErrno()
-	}
+	errno = Nanosleep(&ts, nil)
 	return
 }

libgo/syscalls/sleep_select.go → libgo/go/syscall/sleep_select.go

@@ -8,6 +8,6 @@ package syscall
 
 func Sleep(nsec int64) (errno int) {
 	tv := NsecToTimeval(nsec);
-	n, err := Select(0, nil, nil, nil, &tv);
+	_, err := Select(0, nil, nil, nil, &tv);
 	return err;
 }

libgo/go/syscall/sockcmsg_linux.go

+// Copyright 2011 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Socket control messages
+
+package syscall
+
+import (
+	"unsafe"
+)
+
+// UnixCredentials encodes credentials into a socket control message
+// for sending to another process. This can be used for
+// authentication.
+func UnixCredentials(ucred *Ucred) []byte {
+	buf := make([]byte, CmsgSpace(SizeofUcred))
+	cmsg := (*Cmsghdr)(unsafe.Pointer(&buf[0]))
+	cmsg.Level = SOL_SOCKET
+	cmsg.Type = SCM_CREDENTIALS
+	cmsg.SetLen(CmsgLen(SizeofUcred))
+	*((*Ucred)(cmsgData(cmsg))) = *ucred
+	return buf
+}
+
+// ParseUnixCredentials decodes a socket control message that contains
+// credentials in a Ucred structure. To receive such a message, the
+// SO_PASSCRED option must be enabled on the socket.
+func ParseUnixCredentials(msg *SocketControlMessage) (*Ucred, int) {
+	if msg.Header.Level != SOL_SOCKET {
+		return nil, EINVAL
+	}
+	if msg.Header.Type != SCM_CREDENTIALS {
+		return nil, EINVAL
+	}
+	ucred := *(*Ucred)(unsafe.Pointer(&msg.Data[0]))
+	return &ucred, 0
+}

libgo/go/syscall/sockcmsg_unix.go

+// Copyright 2011 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin freebsd linux openbsd
+
+// Socket control messages
+
+package syscall
+
+import (
+	"unsafe"
+)
+
+// Round the length of a raw sockaddr up to align it propery.
+func cmsgAlignOf(salen int) int {
+	salign := sizeofPtr
+	// NOTE: It seems like 64-bit Darwin kernel still requires 32-bit
+	// aligned access to BSD subsystem.
+	if darwinAMD64 {
+		salign = 4
+	}
+	if salen == 0 {
+		return salign
+	}
+	return (salen + salign - 1) & ^(salign - 1)
+}
+
+// CmsgLen returns the value to store in the Len field of the Cmsghdr
+// structure, taking into account any necessary alignment.
+func CmsgLen(datalen int) int {
+	return cmsgAlignOf(SizeofCmsghdr) + datalen
+}
+
+// CmsgSpace returns the number of bytes an ancillary element with
+// payload of the passed data length occupies.
+func CmsgSpace(datalen int) int {
+	return cmsgAlignOf(SizeofCmsghdr) + cmsgAlignOf(datalen)
+}
+
+func cmsgData(cmsg *Cmsghdr) unsafe.Pointer {
+	return unsafe.Pointer(uintptr(unsafe.Pointer(cmsg)) + SizeofCmsghdr)
+}
+
+type SocketControlMessage struct {
+	Header Cmsghdr
+	Data   []byte
+}
+
+func ParseSocketControlMessage(buf []byte) ([]SocketControlMessage, int) {
+	var (
+		h     *Cmsghdr
+		dbuf  []byte
+		e     int
+		cmsgs []SocketControlMessage
+	)
+
+	for len(buf) >= CmsgLen(0) {
+		h, dbuf, e = socketControlMessageHeaderAndData(buf)
+		if e != 0 {
+			break
+		}
+		m := SocketControlMessage{}
+		m.Header = *h
+		m.Data = dbuf[:int(h.Len)-cmsgAlignOf(SizeofCmsghdr)]
+		cmsgs = append(cmsgs, m)
+		buf = buf[cmsgAlignOf(int(h.Len)):]
+	}
+
+	return cmsgs, e
+}
+
+func socketControlMessageHeaderAndData(buf []byte) (*Cmsghdr, []byte, int) {
+	h := (*Cmsghdr)(unsafe.Pointer(&buf[0]))
+	if h.Len < SizeofCmsghdr || int(h.Len) > len(buf) {
+		return nil, nil, EINVAL
+	}
+	return h, buf[cmsgAlignOf(SizeofCmsghdr):], 0
+}
+
+// UnixRights encodes a set of open file descriptors into a socket
+// control message for sending to another process.
+func UnixRights(fds ...int) []byte {
+	datalen := len(fds) * 4
+	buf := make([]byte, CmsgSpace(datalen))
+	cmsg := (*Cmsghdr)(unsafe.Pointer(&buf[0]))
+	cmsg.Level = SOL_SOCKET
+	cmsg.Type = SCM_RIGHTS
+	cmsg.SetLen(CmsgLen(datalen))
+
+	data := uintptr(cmsgData(cmsg))
+	for _, fd := range fds {
+		*(*int32)(unsafe.Pointer(data)) = int32(fd)
+		data += 4
+	}
+
+	return buf
+}
+
+// ParseUnixRights decodes a socket control message that contains an
+// integer array of open file descriptors from another process.
+func ParseUnixRights(msg *SocketControlMessage) ([]int, int) {
+	if msg.Header.Level != SOL_SOCKET {
+		return nil, EINVAL
+	}
+	if msg.Header.Type != SCM_RIGHTS {
+		return nil, EINVAL
+	}
+	fds := make([]int, len(msg.Data)>>2)
+	for i, j := 0, 0; i < len(msg.Data); i += 4 {
+		fds[j] = int(*(*int32)(unsafe.Pointer(&msg.Data[i])))
+		j++
+	}
+	return fds, 0
+}

libgo/syscalls/socket_linux.go → libgo/go/syscall/socket_linux.go

@@ -57,10 +57,10 @@ func (sa *SockaddrNetlink) sockaddr() (*RawSockaddrAny, Socklen_t, int) {
 }
 
 type RawSockaddrInet4 struct {
-	Family uint16;
-	Port uint16;
-	Addr [4]byte /* in_addr */;
-	Zero [8]uint8;
+	Family uint16
+	Port uint16
+	Addr [4]byte /* in_addr */
+	Zero [8]uint8
 }
 
 func (sa *RawSockaddrInet4) setLen() Socklen_t {
@@ -68,11 +68,11 @@ func (sa *RawSockaddrInet4) setLen() Socklen_t {
 }
 
 type RawSockaddrInet6 struct {
-	Family uint16;
-	Port uint16;
-	Flowinfo uint32;
-	Addr [16]byte /* in6_addr */;
-	Scope_id uint32;
+	Family uint16
+	Port uint16
+	Flowinfo uint32
+	Addr [16]byte /* in6_addr */
+	Scope_id uint32
 }
 
 func (sa *RawSockaddrInet6) setLen() Socklen_t {
@@ -80,8 +80,8 @@ func (sa *RawSockaddrInet6) setLen() Socklen_t {
 }
 
 type RawSockaddrUnix struct {
-	Family uint16;
-	Path [108]int8;
+	Family uint16
+	Path [108]int8
 }
 
 func (sa *RawSockaddrUnix) setLen(int) {
@@ -94,7 +94,7 @@ func (sa *RawSockaddrUnix) getLen() (int, int) {
 		// (This is the standard convention.)
 		// Not friendly to overwrite in place,
 		// but the callers below don't care.
-		sa.Path[0] = '@';
+		sa.Path[0] = '@'
 	}
 
 	// Assume path ends at NUL.
@@ -102,9 +102,9 @@ func (sa *RawSockaddrUnix) getLen() (int, int) {
 	// abstract Unix domain sockets--they are supposed
 	// to be uninterpreted fixed-size binary blobs--but
 	// everyone uses this convention.
-	n := 0;
+	n := 0
 	for n < len(sa.Path) - 3 && sa.Path[n] != 0 {
-		n++;
+		n++
 	}
 
 	return n, 0
@@ -128,8 +128,8 @@ type RawSockaddrNetlink struct {
 }
 
 type RawSockaddr struct {
-	Family uint16;
-	Data [14]int8;
+	Family uint16
+	Data [14]int8
 }
 
 // BindToDevice binds the socket associated with fd to device.
@@ -161,5 +161,23 @@ func anyToSockaddrOS(rsa *RawSockaddrAny) (Sockaddr, int) {
 		}
 		return sa, 0
 	}
-	return nil, EAFNOSUPPORT;
+	return nil, EAFNOSUPPORT
+}
+
+// We don't take this type directly from the header file because it
+// uses a union.  FIXME.
+
+type EpollEvent struct {
+	Events uint32
+	Fd int32
+	Pad int32
 }
+
+//sysnb	EpollCreate(size int) (fd int, errno int)
+//epoll_create(size int) int
+
+//sysnb	EpollCtl(epfd int, op int, fd int, event *EpollEvent) (errno int)
+//epoll_ctl(epfd int, op int, fd int, event *EpollEvent) int
+
+//sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, errno int)
+//epoll_wait(epfd int, events *EpollEvent, maxevents int, timeout int) int

libgo/go/syscall/str.go

+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package syscall
+
+func itoa(val int) string { // do it here rather than with fmt to avoid dependency
+	if val < 0 {
+		return "-" + itoa(-val)
+	}
+	var buf [32]byte // big enough for int64
+	i := len(buf) - 1
+	for val >= 10 {
+		buf[i] = byte(val%10 + '0')
+		i--
+		val /= 10
+	}
+	buf[i] = byte(val + '0')
+	return string(buf[i:])
+}

libgo/go/syscall/syscall.go

+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package syscall contains an interface to the low-level operating system
+// primitives.  The details vary depending on the underlying system.
+// Its primary use is inside other packages that provide a more portable
+// interface to the system, such as "os", "time" and "net".  Use those
+// packages rather than this one if you can.
+// For details of the functions and data types in this package consult
+// the manuals for the appropriate operating system.
+// These calls return errno == 0 to indicate success; otherwise
+// errno is an operating system error number describing the failure.
+package syscall
+
+import "unsafe"
+
+// StringByteSlice returns a NUL-terminated slice of bytes
+// containing the text of s.
+func StringByteSlice(s string) []byte {
+	a := make([]byte, len(s)+1)
+	copy(a, s)
+	return a
+}
+
+// StringBytePtr returns a pointer to a NUL-terminated array of bytes
+// containing the text of s.
+func StringBytePtr(s string) *byte { return &StringByteSlice(s)[0] }
+
+// Single-word zero for use when we need a valid pointer to 0 bytes.
+// See mksyscall.pl.
+var _zero uintptr
+
+var dummy *byte
+const sizeofPtr uintptr = uintptr(unsafe.Sizeof(dummy))

libgo/go/syscall/syscall_stubs.go

+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// These are stubs.
+
+package syscall
+
+func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
+	z := -1
+	return uintptr(z), 0, uintptr(ENOSYS)
+}
+
+func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) {
+	z := -1
+	return uintptr(z), 0, uintptr(ENOSYS)
+}
+
+func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
+	z := -1
+	return uintptr(z), 0, uintptr(ENOSYS)
+}
+
+func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) {
+	z := -1
+	return uintptr(z), 0, uintptr(ENOSYS)
+}

libgo/syscalls/syscall.go → libgo/go/syscall/syscall_unix.go

-// syscall.go -- Basic syscall interface.
-
 // Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// This package contains an interface to the low-level operating system
-// primitives.  The details vary depending on the underlying system.
-// Its primary use is inside other packages that provide a more portable
-// interface to the system, such as "os", "time" and "net".  Use those
-// packages rather than this one if you can.
-// For details of the functions and data types in this package consult
-// the manuals for the appropriate operating system.
+// +build darwin freebsd linux openbsd
+
 package syscall
 
 import (
@@ -18,39 +11,80 @@ import (
 	"unsafe"
 )
 
-func libc_syscall32(trap int32, a1, a2, a3, a4, a5, a6 int32) int32 __asm__ ("syscall");
-func libc_syscall64(trap int64, a1, a2, a3, a4, a5, a6 int64) int64 __asm__ ("syscall");
+var (
+	Stdin  = 0
+	Stdout = 1
+	Stderr = 2
+)
+
+func c_syscall32(trap int32, a1, a2, a3, a4, a5, a6 int32) int32 __asm__ ("syscall");
+func c_syscall64(trap int64, a1, a2, a3, a4, a5, a6 int64) int64 __asm__ ("syscall");
 
 // Do a system call.  We look at the size of uintptr to see how to pass
 // the arguments, so that we don't pass a 64-bit value when the function
 // expects a 32-bit one.
 func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
-  var r uintptr;
-  if unsafe.Sizeof(r) == 4 {
-    r1 := libc_syscall32(int32(trap), int32(a1), int32(a2), int32(a3), 0, 0, 0);
-    r = uintptr(r1);
-  } else {
-    r1 := libc_syscall64(int64(trap), int64(a1), int64(a2), int64(a3), 0, 0, 0);
-    r = uintptr(r1);
-  }
-  return r, 0, uintptr(GetErrno());
+	entersyscall()
+	var r uintptr
+	if unsafe.Sizeof(r) == 4 {
+		r1 := c_syscall32(int32(trap), int32(a1), int32(a2), int32(a3), 0, 0, 0)
+		r = uintptr(r1)
+	} else {
+		r1 := c_syscall64(int64(trap), int64(a1), int64(a2), int64(a3), 0, 0, 0)
+		r = uintptr(r1)
+	}
+	errno := GetErrno()
+	exitsyscall()
+	return r, 0, uintptr(errno)
 }
 
 func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) {
-  var r uintptr;
-  if unsafe.Sizeof(r) == 4 {
-    r1 := libc_syscall32(int32(trap), int32(a1), int32(a2), int32(a3),
-    			 int32(a4), int32(a5), int32(a6));
-    r = uintptr(r1);
-  } else {
-    r1 := libc_syscall64(int64(trap), int64(a1), int64(a2), int64(a3),
-			 int64(a4), int64(a5), int64(a6));
-    r = uintptr(r1);
-  }
-  return r, 0, uintptr(GetErrno());
+	entersyscall()
+	var r uintptr
+	if unsafe.Sizeof(r) == 4 {
+		r1 := c_syscall32(int32(trap), int32(a1), int32(a2), int32(a3),
+    			int32(a4), int32(a5), int32(a6))
+		r = uintptr(r1)
+	} else {
+		r1 := c_syscall64(int64(trap), int64(a1), int64(a2), int64(a3),
+			int64(a4), int64(a5), int64(a6))
+		r = uintptr(r1)
+	}
+	errno := GetErrno()
+	exitsyscall()
+	return r, 0, uintptr(errno)
+}
+
+func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
+	var r uintptr
+	if unsafe.Sizeof(r) == 4 {
+		r1 := c_syscall32(int32(trap), int32(a1), int32(a2), int32(a3), 0, 0, 0)
+		r = uintptr(r1)
+	} else {
+		r1 := c_syscall64(int64(trap), int64(a1), int64(a2), int64(a3), 0, 0, 0)
+		r = uintptr(r1)
+	}
+	errno := GetErrno()
+	return r, 0, uintptr(errno)
+}
+
+func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) {
+	var r uintptr
+	if unsafe.Sizeof(r) == 4 {
+		r1 := c_syscall32(int32(trap), int32(a1), int32(a2), int32(a3),
+    			int32(a4), int32(a5), int32(a6))
+		r = uintptr(r1)
+	} else {
+		r1 := c_syscall64(int64(trap), int64(a1), int64(a2), int64(a3),
+			int64(a4), int64(a5), int64(a6))
+		r = uintptr(r1)
+	}
+	errno := GetErrno()
+	return r, 0, uintptr(errno)
 }
 
 // Mmap manager, for use by operating system-specific implementations.
+// Gccgo only has one implementation but we do this to correspond to gc.
 
 type mmapper struct {
 	sync.Mutex
@@ -109,3 +143,17 @@ func (m *mmapper) Munmap(data []byte) (errno int) {
 	m.active[p] = nil, false
 	return 0
 }
+
+var mapper = &mmapper{
+	active: make(map[*byte][]byte),
+	mmap:   mmap,
+	munmap: munmap,
+}
+
+func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, errno int) {
+	return mapper.Mmap(fd, offset, length, prot, flags)
+}
+
+func Munmap(b []byte) (errno int) {
+	return mapper.Munmap(b)
+}

libgo/go/syscall/wait.c

+/* wait.c -- functions for getting wait status values.
+
+   Copyright 2011 The Go Authors. All rights reserved.
+   Use of this source code is governed by a BSD-style
+   license that can be found in the LICENSE file.
+
+   We use C code to extract the wait status so that we can easily be
+   OS-independent.  */
+
+#define _GNU_SOURCE
+#define __EXTENSIONS__
+
+#include <stdint.h>
+#include <sys/wait.h>
+
+extern _Bool Exited (uint32_t *w)
+  __asm__ ("libgo_syscall.syscall.Exited.N32_libgo_syscall.syscall.WaitStatus");
+
+_Bool
+Exited (uint32_t *w)
+{
+  return WIFEXITED (*w) != 0;
+}
+
+extern _Bool Signaled (uint32_t *w)
+  __asm__ ("libgo_syscall.syscall.Signaled.N32_libgo_syscall.syscall.WaitStatus");
+
+_Bool
+Signaled (uint32_t *w)
+{
+  return WIFSIGNALED (*w) != 0;
+}
+
+extern _Bool Stopped (uint32_t *w)
+  __asm__ ("libgo_syscall.syscall.Stopped.N32_libgo_syscall.syscall.WaitStatus");
+
+_Bool
+Stopped (uint32_t *w)
+{
+  return WIFSTOPPED (*w) != 0;
+}
+
+extern _Bool Continued (uint32_t *w)
+  __asm__ ("libgo_syscall.syscall.Continued.N32_libgo_syscall.syscall.WaitStatus");
+
+_Bool
+Continued (uint32_t *w)
+{
+  return WIFCONTINUED (*w) != 0;
+}
+
+extern _Bool CoreDump (uint32_t *w)
+  __asm__ ("libgo_syscall.syscall.CoreDump.N32_libgo_syscall.syscall.WaitStatus");
+
+_Bool
+CoreDump (uint32_t *w)
+{
+  return WCOREDUMP (*w) != 0;
+}
+
+extern int ExitStatus (uint32_t *w)
+  __asm__ ("libgo_syscall.syscall.ExitStatus.N32_libgo_syscall.syscall.WaitStatus");
+
+int
+ExitStatus (uint32_t *w)
+{
+  if (!WIFEXITED (*w))
+    return -1;
+  return WEXITSTATUS (*w);
+}
+
+extern int Signal (uint32_t *w)
+  __asm__ ("libgo_syscall.syscall.Signal.N32_libgo_syscall.syscall.WaitStatus");
+
+int
+Signal (uint32_t *w)
+{
+  if (!WIFSIGNALED (*w))
+    return -1;
+  return WTERMSIG (*w);
+}
+
+extern int StopSignal (uint32_t *w)
+  __asm__ ("libgo_syscall.syscall.StopSignal.N32_libgo_syscall.syscall.WaitStatus");
+
+int
+StopSignal (uint32_t *w)
+{
+  if (!WIFSTOPPED (*w))
+    return -1;
+  return WSTOPSIG (*w);
+}
+
+extern int TrapCause (uint32_t *w)
+  __asm__ ("libgo_syscall.syscall.TrapCause.N32_libgo_syscall.syscall.WaitStatus");
+
+int
+TrapCause (uint32_t *w)
+{
+#ifndef __linux__
+  return -1;
+#else
+  if (!WIFSTOPPED (*w) || WSTOPSIG (*w) != SIGTRAP)
+    return -1;
+  return *w >> 16;
+#endif
+}

libgo/mksysinfo.sh

@@ -197,16 +197,13 @@ if ! grep '^const EPOLLRDHUP' ${OUT} >/dev/null 2>&1; then
   echo "const EPOLLRDHUP = 0x2000" >> ${OUT}
 fi
 
-# Ptrace constants.  We don't expose all the PTRACE flags, just the
-# PTRACE_O_xxx and PTRACE_EVENT_xxx ones.
-grep '^const _PTRACE_O' gen-sysinfo.go |
-  sed -e 's/^\(const \)_\(PTRACE_O[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
-grep '^const _PTRACE_EVENT' gen-sysinfo.go |
-  sed -e 's/^\(const \)_\(PTRACE_EVENT[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
-# We need PTRACE_SETOPTIONS and PTRACE_GETEVENTMSG, but they are not
-# defined in older versions of glibc.
-if ! grep '^const _PTRACE_SETOPTIONS' ${OUT} > /dev/null 2>&1; then
-  echo "const _PTRACE_SETOPTIONS = 0x4200" >> ${OUT}
+# Ptrace constants.
+grep '^const _PTRACE' gen-sysinfo.go |
+  sed -e 's/^\(const \)_\(PTRACE[^= ]*\)\(.*\)$/\1\2 = _\2/' >> ${OUT}
+# We need some ptrace options that are not defined in older versions
+# of glibc.
+if ! grep '^const PTRACE_SETOPTIONS' ${OUT} > /dev/null 2>&1; then
+  echo "const PTRACE_SETOPTIONS = 0x4200" >> ${OUT}
 fi
 if ! grep '^const PTRACE_O_TRACESYSGOOD' ${OUT} > /dev/null 2>&1; then
   echo "const PTRACE_O_TRACESYSGOOD = 0x1" >> ${OUT}
@@ -254,7 +251,7 @@ if ! grep '^const PTRACE_EVENT_EXIT' ${OUT} > /dev/null 2>&1; then
   echo "const PTRACE_EVENT_EXIT = 6" >> ${OUT}
 fi
 if ! grep '^const _PTRACE_TRACEME' ${OUT} > /dev/null 2>&1; then
-  echo "const _PTRACE_TRACEME = 0" >> ${OUT}
+  echo "const PTRACE_TRACEME = 0" >> ${OUT}
 fi
 
 # The registers returned by PTRACE_GETREGS.  This is probably
@@ -474,6 +471,11 @@ grep '^type _ip_mreq ' gen-sysinfo.go | \
       -e 's/_in_addr/[4]byte/g' \
     >> ${OUT}
 
+# The size of the ip_mreq struct.
+if grep 'type IPMreq ' ${OUT} > /dev/null 2>&1; then
+  echo 'var SizeofIPMreq = int(unsafe.Sizeof(IPMreq{}))' >> ${OUT}
+fi
+
 # Try to guess the type to use for fd_set.
 fd_set=`grep '^type _fd_set ' gen-sysinfo.go || true`
 fds_bits_type="_C_long"
@@ -531,6 +533,25 @@ if ! grep '^const NLMSG_HDRLEN' ${OUT} > /dev/null 2>&1; then
   fi
 fi
 
+# The rtmsg struct.
+grep '^type _rtmsg ' gen-sysinfo.go | \
+    sed -e 's/_rtmsg/RtMsg/' \
+      -e 's/rtm_family/Family/' \
+      -e 's/rtm_dst_len/Dst_len/' \
+      -e 's/rtm_src_len/Src_len/' \
+      -e 's/rtm_tos/Tos/' \
+      -e 's/rtm_table/Table/' \
+      -e 's/rtm_protocol/Procotol/' \
+      -e 's/rtm_scope/Scope/' \
+      -e 's/rtm_type/Type/' \
+      -e 's/rtm_flags/Flags/' \
+    >> ${OUT}
+
+# The size of the rtmsg struct.
+if grep 'type RtMsg ' ${OUT} > /dev/null 2>&1; then
+  echo 'var SizeofRtMsg = int(unsafe.Sizeof(RtMsg{}))' >> ${OUT}
+fi
+
 # The rtgenmsg struct.
 grep '^type _rtgenmsg ' gen-sysinfo.go | \
     sed -e 's/_rtgenmsg/RtGenmsg/' \

libgo/runtime/proc.c

@@ -71,3 +71,21 @@ runtime_setcpuprofilerate(void (*fn)(uintptr*, int32), int32 hz)
 	if(hz != 0)
 		runtime_resetcpuprofiler(hz);
 }
+
+/* The entersyscall and exitsyscall functions aren't used for anything
+   yet.  Eventually they will be used to switch to a new OS thread
+   when making a potentially-blocking library call.  */
+
+void runtime_entersyscall() __asm__("libgo_syscall.syscall.entersyscall");
+
+void
+runtime_entersyscall()
+{
+}
+
+void runtime_exitsyscall() __asm__("libgo_syscall.syscall.exitsyscall");
+
+void
+runtime_exitsyscall()
+{
+}

libgo/syscalls/errstr_decl.go

-// errstr.go -- Declare strerror_r.
-
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-func libc_strerror_r(int, *byte, Size_t) int __asm__ ("strerror_r")

libgo/syscalls/errstr_decl_linux.go

-// errstr_decl_linux.go -- Declare strerror_r for GNU/Linux.
-
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-func libc_strerror_r(int, *byte, Size_t) int __asm__ ("__xpg_strerror_r")

libgo/syscalls/errstr_decl_rtems.go

-// errstr.go -- Declare strerror_r for RTEMS.
-
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-// RTEMS uses strerror_r in newlib, which is a GNU extension returning a char *.
-func libc_strerror_r(int, *byte, Size_t) *byte __asm__ ("strerror_r")

libgo/syscalls/exec.go

-// exec.go -- fork/exec syscall support.
-
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Fork, exec, wait, etc.
-
-package syscall
-
-import "unsafe"
-
-func libc_fcntl(fd int, cmd int, arg int) int __asm__ ("fcntl")
-func libc_fork() Pid_t __asm__ ("fork")
-func libc_setsid() Pid_t __asm__ ("setsid")
-func libc_setpgid(Pid_t, Pid_t) int __asm__ ("setpgid")
-func libc_chroot(path *byte) int __asm__ ("chroot")
-func libc_setuid(Uid_t) int __asm__ ("setuid")
-func libc_setgid(Gid_t) int __asm__ ("setgid")
-func libc_setgroups(Size_t, *Gid_t) int __asm__ ("setgroups")
-func libc_chdir(name *byte) int __asm__ ("chdir")
-func libc_dup2(int, int) int __asm__ ("dup2")
-func libc_ioctl(int, int) int __asm__ ("ioctl")
-func libc_execve(*byte, **byte, **byte) int __asm__ ("execve")
-func libc_sysexit(int) __asm__ ("_exit")
-
-// Fork, dup fd onto 0..len(fd), and exec(argv0, argvv, envv) in child.
-// If a dup or exec fails, write the errno int to pipe.
-// (Pipe is close-on-exec so if exec succeeds, it will be closed.)
-// In the child, this function must not acquire any locks, because
-// they might have been locked at the time of the fork.  This means
-// no rescheduling, no malloc calls, and no new stack segments.
-func forkAndExecInChild(argv0 *byte, argv, envv []*byte, chroot, dir *byte, attr *ProcAttr, sys *SysProcAttr, pipe int) (pid int, err int) {
-	// Declare all variables at top in case any
-	// declarations require heap allocation (e.g., err1).
-	var r1, r2, err1 uintptr
-	var nextfd int
-	var i int
-
-	// guard against side effects of shuffling fds below.
-	fd := append([]int(nil), attr.Files...)
-
-	darwin := OS == "darwin"
-
-	// About to call fork.
-	// No more allocation or calls of non-assembly functions.
-	child := libc_fork()
-	if child == -1 {
-		return 0, GetErrno()
-	}
-
-	if child != 0 {
-		// parent; return PID
-		return int(child), 0
-	}
-
-	// Fork succeeded, now in child.
-
-	// Enable tracing if requested.
-	if sys.Ptrace {
-		if libc_ptrace(_PTRACE_TRACEME, 0, 0, nil) < 0 {
-			goto childerror
-		}
-	}
-
-	// Session ID
-	if sys.Setsid {
-		if libc_setsid() == Pid_t(-1) {
-			goto childerror
-		}
-	}
-
-	// Set process group
-	if sys.Setpgid {
-		if libc_setpgid(0, 0) < 0 {
-			goto childerror
-		}
-	}
-
-	// Chroot
-	if chroot != nil {
-		if libc_chroot(chroot) < 0 {
-			goto childerror
-		}
-	}
-
-	// User and groups
-	if cred := sys.Credential; cred != nil {
-		ngroups := uintptr(len(cred.Groups))
-		var groups *Gid_t
-		if ngroups > 0 {
-			groups = (*Gid_t)(unsafe.Pointer(&cred.Groups[0]))
-		}
-		if libc_setgroups(Size_t(ngroups), groups) < 0 {
-			goto childerror
-		}
-		if libc_setgid(Gid_t(cred.Gid)) < 0 {
-			goto childerror
-		}
-		if libc_setuid(Uid_t(cred.Uid)) < 0 {
-			goto childerror
-		}
-	}
-
-	// Chdir
-	if dir != nil {
-		if libc_chdir(dir) < 0 {
-			goto childerror
-		}
-	}
-
-	// Pass 1: look for fd[i] < i and move those up above len(fd)
-	// so that pass 2 won't stomp on an fd it needs later.
-	nextfd = int(len(fd))
-	if pipe < nextfd {
-		r := libc_dup2(pipe, nextfd)
-		if r == -1 {
-			goto childerror
-		}
-		libc_fcntl(nextfd, F_SETFD, FD_CLOEXEC)
-		pipe = nextfd
-		nextfd++
-	}
-	for i = 0; i < len(fd); i++ {
-		if fd[i] >= 0 && fd[i] < int(i) {
-			r := libc_dup2(fd[i], nextfd)
-			if r == -1 {
-				goto childerror
-			}
-			libc_fcntl(nextfd, F_SETFD, FD_CLOEXEC)
-			fd[i] = nextfd
-			nextfd++
-			if nextfd == pipe { // don't stomp on pipe
-				nextfd++
-			}
-		}
-	}
-
-	// Pass 2: dup fd[i] down onto i.
-	for i = 0; i < len(fd); i++ {
-		if fd[i] == -1 {
-			libc_close(i)
-			continue
-		}
-		if fd[i] == int(i) {
-			// dup2(i, i) won't clear close-on-exec flag on Linux,
-			// probably not elsewhere either.
-			r := libc_fcntl(fd[i], F_SETFD, 0)
-			if r != 0 {
-				goto childerror
-			}
-			continue
-		}
-		// The new fd is created NOT close-on-exec,
-		// which is exactly what we want.
-		r := libc_dup2(fd[i], i)
-		if r == -1 {
-			goto childerror
-		}
-	}
-
-	// By convention, we don't close-on-exec the fds we are
-	// started with, so if len(fd) < 3, close 0, 1, 2 as needed.
-	// Programs that know they inherit fds >= 3 will need
-	// to set them close-on-exec.
-	for i = len(fd); i < 3; i++ {
-		libc_close(i)
-	}
-
-	// Detach fd 0 from tty
-	if sys.Noctty {
-		if libc_ioctl(0, TIOCNOTTY) < 0 {
-			goto childerror
-		}
-	}
-
-	// Make fd 0 the tty
-	if sys.Setctty {
-		if libc_ioctl(0, TIOCSCTTY) < 0 {
-			goto childerror
-		}
-	}
-
-	// Time to exec.
-	libc_execve(argv0, &argv[0], &envv[0])
-
-childerror:
-	// send error code on pipe
-	var e uintptr = uintptr(GetErrno())
-	libc_write(pipe, (*byte)(unsafe.Pointer(&e)),
-		   Size_t(unsafe.Sizeof(err1)))
-	for {
-		libc_sysexit(253)
-	}
-
-	// Calling panic is not actually safe,
-	// but the for loop above won't break
-	// and this shuts up the compiler.
-	panic("unreached")
-}
-
-// Credential holds user and group identities to be assumed
-// by a child process started by StartProcess.
-type Credential struct {
-	Uid    uint32   // User ID.
-	Gid    uint32   // Group ID.
-	Groups []uint32 // Supplementary group IDs.
-}
-
-// ProcAttr holds attributes that will be applied to a new process started
-// by StartProcess.
-type ProcAttr struct {
-	Dir   string   // Current working directory.
-	Env   []string // Environment.
-	Files []int    // File descriptors.
-	Sys   *SysProcAttr
-}
-
-type SysProcAttr struct {
-	Chroot     string      // Chroot.
-	Credential *Credential // Credential.
-	Ptrace     bool        // Enable tracing.
-	Setsid     bool        // Create session.
-	Setpgid    bool        // Set process group ID to new pid (SYSV setpgrp)
-	Setctty    bool        // Set controlling terminal to fd 0
-	Noctty     bool        // Detach fd 0 from controlling terminal
-}
-
-var zeroProcAttr ProcAttr
-var zeroSysProcAttr SysProcAttr
-
-func forkExec(argv0 string, argv []string, attr *ProcAttr) (pid int, err int) {
-	var p [2]int
-	var n Ssize_t
-	var r1 int
-	var err1 uintptr
-	var wstatus WaitStatus
-
-	if attr == nil {
-		attr = &zeroProcAttr
-	}
-	sys := attr.Sys
-	if sys == nil {
-		sys = &zeroSysProcAttr
-	}
-
-	p[0] = -1
-	p[1] = -1
-
-	// Convert args to C form.
-	argv0p := StringBytePtr(argv0)
-	argvp := StringArrayPtr(argv)
-	envvp := StringArrayPtr(attr.Env)
-
-	if OS == "freebsd" && len(argv[0]) > len(argv0) {
-		argvp[0] = argv0p
-	}
-
-	var chroot *byte
-	if sys.Chroot != "" {
-		chroot = StringBytePtr(sys.Chroot)
-	}
-	var dir *byte
-	if attr.Dir != "" {
-		dir = StringBytePtr(attr.Dir)
-	}
-
-	// Acquire the fork lock so that no other threads
-	// create new fds that are not yet close-on-exec
-	// before we fork.
-	ForkLock.Lock()
-
-	// Allocate child status pipe close on exec.
-	if err = Pipe(p[0:]); err != 0 {
-		goto error
-	}
-	if _, err = fcntl(p[0], F_SETFD, FD_CLOEXEC); err != 0 {
-		goto error
-	}
-	if _, err = fcntl(p[1], F_SETFD, FD_CLOEXEC); err != 0 {
-		goto error
-	}
-
-	// Kick off child.
-	pid, err = forkAndExecInChild(argv0p, argvp, envvp, chroot, dir, attr, sys, p[1])
-	if err != 0 {
-		goto error
-	}
-	ForkLock.Unlock()
-
-	// Read child error status from pipe.
-	Close(p[1])
-	n = libc_read(p[0], (*byte)(unsafe.Pointer(&err1)),
-		      Size_t(unsafe.Sizeof(err1)))
-	err = 0
-	if n < 0 {
-		err = GetErrno()
-	}
-	Close(p[0])
-	if err != 0 || n != 0 {
-		if int(n) == unsafe.Sizeof(err1) {
-			err = int(err1)
-		}
-		if err == 0 {
-			err = EPIPE
-		}
-
-		// Child failed; wait for it to exit, to make sure
-		// the zombies don't accumulate.
-		_, err1 := Wait4(pid, &wstatus, 0, nil)
-		for err1 == EINTR {
-			_, err1 = Wait4(pid, &wstatus, 0, nil)
-		}
-		return 0, err
-	}
-
-	// Read got EOF, so pipe closed on exec, so exec succeeded.
-	return pid, 0
-
-error:
-	if p[0] >= 0 {
-		Close(p[0])
-		Close(p[1])
-	}
-	ForkLock.Unlock()
-	return 0, err
-}
-
-// Combination of fork and exec, careful to be thread safe.
-func ForkExec(argv0 string, argv []string, attr *ProcAttr) (pid int, err int) {
-	return forkExec(argv0, argv, attr)
-}
-
-// StartProcess wraps ForkExec for package os.
-func StartProcess(argv0 string, argv []string, attr *ProcAttr) (pid, handle int, err int) {
-	pid, err = forkExec(argv0, argv, attr)
-	return pid, 0, err
-}
-
-// Ordinary exec.
-func Exec(argv0 string, argv []string, envv []string) (err int) {
-	argv_arg := StringArrayPtr(argv)
-	envv_arg := StringArrayPtr(envv)
-	libc_execve(StringBytePtr(argv0), &argv_arg[0], &envv_arg[0])
-	return GetErrno()
-}

libgo/syscalls/exec_helpers.go

-// exec_helpers.go -- helper functions used with fork, exec, wait.
-
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-import "sync"
-
-// Lock synchronizing creation of new file descriptors with fork.
-//
-// We want the child in a fork/exec sequence to inherit only the
-// file descriptors we intend.  To do that, we mark all file
-// descriptors close-on-exec and then, in the child, explicitly
-// unmark the ones we want the exec'ed program to keep.
-// Unix doesn't make this easy: there is, in general, no way to
-// allocate a new file descriptor close-on-exec.  Instead you
-// have to allocate the descriptor and then mark it close-on-exec.
-// If a fork happens between those two events, the child's exec
-// will inherit an unwanted file descriptor.
-//
-// This lock solves that race: the create new fd/mark close-on-exec
-// operation is done holding ForkLock for reading, and the fork itself
-// is done holding ForkLock for writing.  At least, that's the idea.
-// There are some complications.
-//
-// Some system calls that create new file descriptors can block
-// for arbitrarily long times: open on a hung NFS server or named
-// pipe, accept on a socket, and so on.  We can't reasonably grab
-// the lock across those operations.
-//
-// It is worse to inherit some file descriptors than others.
-// If a non-malicious child accidentally inherits an open ordinary file,
-// that's not a big deal.  On the other hand, if a long-lived child
-// accidentally inherits the write end of a pipe, then the reader
-// of that pipe will not see EOF until that child exits, potentially
-// causing the parent program to hang.  This is a common problem
-// in threaded C programs that use popen.
-//
-// Luckily, the file descriptors that are most important not to
-// inherit are not the ones that can take an arbitrarily long time
-// to create: pipe returns instantly, and the net package uses
-// non-blocking I/O to accept on a listening socket.
-// The rules for which file descriptor-creating operations use the
-// ForkLock are as follows:
-//
-// 1) Pipe.    Does not block.  Use the ForkLock.
-// 2) Socket.  Does not block.  Use the ForkLock.
-// 3) Accept.  If using non-blocking mode, use the ForkLock.
-//             Otherwise, live with the race.
-// 4) Open.    Can block.  Use O_CLOEXEC if available (Linux).
-//             Otherwise, live with the race.
-// 5) Dup.     Does not block.  Use the ForkLock.
-//             On Linux, could use fcntl F_DUPFD_CLOEXEC
-//             instead of the ForkLock, but only for dup(fd, -1).
-
-type WaitStatus int
-
-var ForkLock sync.RWMutex
-
-// Convert array of string to array
-// of NUL-terminated byte pointer.
-func StringArrayPtr(ss []string) []*byte {
-	bb := make([]*byte, len(ss)+1);
-	for i := 0; i < len(ss); i++ {
-		bb[i] = StringBytePtr(ss[i]);
-	}
-	bb[len(ss)] = nil;
-	return bb;
-}
-
-func CloseOnExec(fd int) {
-	fcntl(fd, F_SETFD, FD_CLOEXEC);
-}
-
-func SetNonblock(fd int, nonblocking bool) (errno int) {
-	flag, err := fcntl(fd, F_GETFL, 0);
-	if err != 0 {
-		return err;
-	}
-	if nonblocking {
-		flag |= O_NONBLOCK;
-	} else {
-		flag &= ^O_NONBLOCK;
-	}
-	flag, err = fcntl(fd, F_SETFL, flag);
-	return err;
-}
-
-// Wait status is 7 bits at bottom, either 0 (exited),
-// 0x7F (stopped), or a signal number that caused an exit.
-// The 0x80 bit is whether there was a core dump.
-// An extra number (exit code, signal causing a stop)
-// is in the high bits.  At least that's the idea.
-// There are various irregularities.  For example, the
-// "continued" status is 0xFFFF, distinguishing itself
-// from stopped via the core dump bit.
-
-const (
-	mask = 0x7F;
-	core = 0x80;
-	exited = 0x00;
-	stopped = 0x7F;
-	shift = 8;
-)
-
-func (w WaitStatus) Exited() bool {
-	return w&mask == exited;
-}
-
-func (w WaitStatus) Signaled() bool {
-	return w&mask != stopped && w&mask != exited;
-}
-
-func (w WaitStatus) Stopped() bool {
-	return w&0xFF == stopped;
-}
-
-func (w WaitStatus) Continued() bool {
-	return w == 0xFFFF;
-}
-
-func (w WaitStatus) CoreDump() bool {
-	return w.Signaled() && w&core != 0;
-}
-
-func (w WaitStatus) ExitStatus() int {
-	if !w.Exited() {
-		return -1;
-	}
-	return int(w >> shift) & 0xFF;
-}
-
-func (w WaitStatus) Signal() int {
-	if !w.Signaled() {
-		return -1;
-	}
-	return int(w & mask);
-}
-
-func (w WaitStatus) StopSignal() int {
-	if !w.Stopped() {
-		return -1;
-	}
-	return int(w >> shift) & 0xFF;
-}
-
-func (w WaitStatus) TrapCause() int {
-	if w.StopSignal() != SIGTRAP {
-		return -1;
-	}
-	return int(w >> shift) >> 8;
-}

libgo/syscalls/socket_epoll.go

-// socket_epoll.go -- GNU/Linux epoll handling.
-
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Support for GNU/Linux epoll.
-// Only for implementing net package.
-// DO NOT USE DIRECTLY.
-
-package syscall
-
-// We don't take this type directly from the header file because it
-// uses a union.  FIXME.
-
-type EpollEvent struct {
-  Events uint32;
-  Fd int32;
-  Pad int32;
-};
-
-func libc_epoll_create(size int) int __asm__ ("epoll_create");
-func libc_epoll_ctl(epfd, op, fd int, event *EpollEvent) int __asm__ ("epoll_ctl");
-func libc_epoll_wait(epfd int, events *EpollEvent, maxevents int,
-                     timeout int) int __asm__ ("epoll_wait");
-
-
-func EpollCreate(size int) (fd int, errno int) {
-  fd = libc_epoll_create(int(size));
-  if fd < 0 { errno = GetErrno() }
-  return;
-}
-
-func EpollCtl(epfd, op, fd int, ev *EpollEvent) (errno int) {
-  r := libc_epoll_ctl(epfd, op, fd, ev);
-  if r < 0 { errno = GetErrno() }
-  return;
-}
-
-func EpollWait(epfd int, ev []EpollEvent, msec int) (n int, errno int) {
-  var events *EpollEvent;
-  var maxevents int;
-  if len(ev) > 0 {
-    maxevents = len(ev);
-    events = &ev[0]
-  }
-  n = libc_epoll_wait(epfd, events, maxevents, msec);
-  if n < 0 { errno = GetErrno() }
-  return;
-}

libgo/syscalls/stringbyte.go

-// stringbyte.go -- string to bytes functions.
-
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-import "unsafe"
-
-// StringByteSlice returns a NUL-terminated slice of bytes
-// containing the text of s.
-func StringByteSlice(s string) []byte {
-	a := make([]byte, len(s)+1);
-	for i := 0; i < len(s); i++ {
-		a[i] = s[i];
-	}
-	return a;
-}
-
-// StringBytePtr returns a pointer to a NUL-terminated array of bytes
-// containing the text of s.
-func StringBytePtr(s string) *byte {
-	p := StringByteSlice(s);
-	return &p[0];
-}
-
-// BytePtrToString takes a NUL-terminated array of bytes and convert
-// it to a Go string.
-func BytePtrToString(p *byte) string {
-	a := (*[10000]byte)(unsafe.Pointer(p))
-	i := 0
-	for a[i] != 0 {
-		i++
-	}
-	return string(a[:i])
-}

libgo/syscalls/syscall_irix.go

-// syscall_irix.go -- IRIX 6 specific syscall interface.
-
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-import "unsafe"
-
-// FIXME: ptrace(3C) has this, but exec.go expects the next.
-//func libc_ptrace(request int, pid Pid_t, addr int, data int) int __asm__ ("ptrace")
-
-func libc_ptrace(request int, pid Pid_t, addr uintptr, data *byte) int __asm__ ("ptrace")
-
-var dummy *byte
-const sizeofPtr uintptr = uintptr(unsafe.Sizeof(dummy))

libgo/syscalls/syscall_linux.go

-// syscall_linux.go -- GNU/Linux specific syscall interface.
-
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-import "unsafe"
-
-func libc_ptrace(request int, pid Pid_t, addr uintptr, data *byte) _C_long __asm__ ("ptrace")
-func libc_sendfile(int, int, *Offset_t, Size_t) Ssize_t __asm__ ("sendfile")
-
-var dummy *byte
-const sizeofPtr uintptr = uintptr(unsafe.Sizeof(dummy))
-
-func ptracePeek(req int, pid int, addr uintptr, out []byte) (count int, errno int) {
-	// The peek requests are machine-size oriented, so we wrap it
-	// to retrieve arbitrary-length data.
-
-	var buf [sizeofPtr]byte;
-
-	// Leading edge.  PEEKTEXT/PEEKDATA don't require aligned
-	// access (PEEKUSER warns that it might), but if we don't
-	// align our reads, we might straddle an unmapped page
-	// boundary and not get the bytes leading up to the page
-	// boundary.
-	n := 0;
-	if addr % sizeofPtr != 0 {
-		SetErrno(0);
-		val := libc_ptrace(req, Pid_t(pid), addr - addr%sizeofPtr, nil);
-		if errno := GetErrno(); errno != 0 {
-			return 0, errno;
-		}
-		*(*_C_long)(unsafe.Pointer(&buf[0])) = val;
-		n += copy(out, buf[addr%sizeofPtr:]);
-		out = out[n:];
-	}
-
-	// Remainder.
-	for len(out) > 0 {
-		// We use an internal buffer to gaurantee alignment.
-		// It's not documented if this is necessary, but we're paranoid.
-		SetErrno(0);
-		val := libc_ptrace(req, Pid_t(pid), addr+uintptr(n), nil);
-		if errno = GetErrno(); errno != 0 {
-			return n, errno;
-		}
-		*(*_C_long)(unsafe.Pointer(&buf[0])) = val;
-		copied := copy(out, buf[0:]);
-		n += copied;
-		out = out[copied:];
-	}
-
-	return n, 0;
-}
-
-func PtracePeekText(pid int, addr uintptr, out []byte) (count int, errno int) {
-	return ptracePeek(_PTRACE_PEEKTEXT, pid, addr, out);
-}
-
-func PtracePeekData(pid int, addr uintptr, out []byte) (count int, errno int) {
-	return ptracePeek(_PTRACE_PEEKDATA, pid, addr, out);
-}
-
-func ptracePoke(pokeReq int, peekReq int, pid int, addr uintptr, data []byte) (count int, errno int) {
-	// As for ptracePeek, we need to align our accesses to deal
-	// with the possibility of straddling an invalid page.
-
-	// Leading edge.
-	n := 0;
-	if addr % sizeofPtr != 0 {
-		var buf [sizeofPtr]byte;
-		if libc_ptrace(peekReq, Pid_t(pid), addr - addr%sizeofPtr, &buf[0]) < 0 {
-			return 0, GetErrno();
-		}
-		n += copy(buf[addr%sizeofPtr:], data);
-		word := (*byte)(unsafe.Pointer(*((*uintptr)(unsafe.Pointer(&buf[0])))));
-		if libc_ptrace(pokeReq, Pid_t(pid), addr - addr%sizeofPtr, word) < 0 {
-			return 0, GetErrno();
-		}
-		data = data[n:len(data)];
-	}
-
-	// Interior.
-	for uintptr(len(data)) > sizeofPtr {
-		word := (*byte)(unsafe.Pointer(*((*uintptr)(unsafe.Pointer(&data[0])))));
-		if libc_ptrace(pokeReq, Pid_t(pid), addr+uintptr(n), word) < 0 {
-			return n, GetErrno();
-		}
-		n += int(sizeofPtr);
-		data = data[sizeofPtr:len(data)];
-	}
-
-	// Trailing edge.
-	if len(data) > 0 {
-		var buf [sizeofPtr]byte;
-		if libc_ptrace(peekReq, Pid_t(pid), addr+uintptr(n), &buf[0]) < 0 {
-			return n, GetErrno();
-		}
-		copy(buf[0:], data);
-		word := (*byte)(unsafe.Pointer(*((*uintptr)(unsafe.Pointer(&buf[0])))));
-		if libc_ptrace(pokeReq, Pid_t(pid), addr+uintptr(n), word) < 0 {
-			return n, GetErrno();
-		}
-		n += len(data);
-	}
-
-	return n, 0;
-}
-
-func PtracePokeText(pid int, addr uintptr, data []byte) (count int, errno int) {
-	return ptracePoke(_PTRACE_POKETEXT, _PTRACE_PEEKTEXT, pid, addr, data);
-}
-
-func PtracePokeData(pid int, addr uintptr, data []byte) (count int, errno int) {
-	return ptracePoke(_PTRACE_POKEDATA, _PTRACE_PEEKDATA, pid, addr, data);
-}
-
-func PtraceGetRegs(pid int, regsout *PtraceRegs) (errno int) {
-	if libc_ptrace(_PTRACE_GETREGS, Pid_t(pid), 0, (*byte)(unsafe.Pointer(regsout))) < 0 {
-		return GetErrno();
-	} else {
-		return 0;
-	}
-}
-
-func PtraceSetRegs(pid int, regs *PtraceRegs) (errno int) {
-	if libc_ptrace(_PTRACE_SETREGS, Pid_t(pid), 0, (*byte)(unsafe.Pointer(regs))) < 0 {
-		return GetErrno();
-	} else {
-		return 0;
-	}
-}
-
-func PtraceSetOptions(pid int, options int) (errno int) {
-	if libc_ptrace(_PTRACE_SETOPTIONS, Pid_t(pid), 0, (*byte)(unsafe.Pointer(uintptr(options)))) < 0 {
-		return GetErrno();
-	} else {
-		return 0;
-	}
-}
-
-func PtraceGetEventMsg(pid int) (msg uint, errno int) {
-	var data _C_long;
-	if libc_ptrace(_PTRACE_GETEVENTMSG, Pid_t(pid), 0, (*byte)(unsafe.Pointer(&data))) < 0 {
-		errno = GetErrno();
-	}
-	msg = uint(data);
-	return;
-}
-
-func PtraceCont(pid int, signal int) (errno int) {
-	if libc_ptrace(_PTRACE_CONT, Pid_t(pid), 0, (*byte)(unsafe.Pointer(uintptr(signal)))) < 0 {
-		return GetErrno();
-	} else {
-		return 0;
-	}
-}
-
-func PtraceSingleStep(pid int) (errno int) {
-	if libc_ptrace(_PTRACE_SINGLESTEP, Pid_t(pid), 0, nil) < 0 {
-		return GetErrno();
-	} else {
-		return 0;
-	}
-}
-
-func PtraceAttach(pid int) (errno int) {
-	if libc_ptrace(_PTRACE_ATTACH, Pid_t(pid), 0, nil) < 0 {
-		return GetErrno();
-	} else {
-		return 0;
-	}
-}
-
-func PtraceDetach(pid int) (errno int) {
-	if libc_ptrace(_PTRACE_DETACH, Pid_t(pid), 0, nil) < 0 {
-		return GetErrno();
-	} else {
-		return 0;
-	}
-}
-
-func Tgkill(tgid int, tid int, sig int) (errno int) {
-	r1, r2, err := Syscall(SYS_TGKILL, uintptr(tgid), uintptr(tid),
-				 uintptr(sig));
-	return int(err);
-}
-
-func Sendfile(outfd int, infd int, offset *int64, count int) (written int, errno int) {
-	var o Offset_t
-	var po *Offset_t
-	if offset != nil {
-		o = Offset_t(*offset)
-		po = &o
-	}
-	w := libc_sendfile(outfd, infd, po, Size_t(count))
-	if offset != nil {
-		*offset = int64(o)
-	}
-	if w < 0 {
-		return 0, GetErrno()
-	}
-	return int(w), 0
-}

libgo/syscalls/syscall_solaris_386.go

-// syscall_solaris_386.go -- Solaris/x86 specific support
-
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-import "unsafe"
-
-// FIXME: ptrace(3C) has this, but exec.go expects the next.
-//func libc_ptrace(request int, pid Pid_t, addr int, data int) int __asm__ ("ptrace")
-
-func libc_ptrace(request int, pid Pid_t, addr uintptr, data *byte) int __asm__ ("ptrace")
-
-var dummy *byte
-const sizeofPtr uintptr = uintptr(unsafe.Sizeof(dummy))
-
-// 32-bit Solaris 2/x86 needs to use _nuname internally, cf. <sys/utsname.h>.
-func libc_uname(buf *Utsname) (errno int) __asm__("_nuname")

libgo/syscalls/syscall_solaris_amd64.go

-// syscall_solaris_amd64.go -- Solaris/x64 specific support
-
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-import "unsafe"
-
-// FIXME: ptrace(3C) has this, but exec.go expects the next.
-//func libc_ptrace(request int, pid Pid_t, addr int, data int) int __asm__ ("ptrace")
-
-// 64-bit ptrace(3C) doesn't exist
-func libc_ptrace(request int, pid Pid_t, addr uintptr, data *byte) int {
-	SetErrno(ENOSYS)
-	return -1
-}
-
-var dummy *byte
-const sizeofPtr uintptr = uintptr(unsafe.Sizeof(dummy))

libgo/syscalls/syscall_solaris_sparc.go

-// syscall_solaris_sparc.go -- Solaris/SPARC specific support
-
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-import "unsafe"
-
-// FIXME: ptrace(3C) has this, but exec.go expects the next.
-//func libc_ptrace(request int, pid Pid_t, addr int, data int) int __asm__ ("ptrace")
-
-func libc_ptrace(request int, pid Pid_t, addr uintptr, data *byte) int __asm__ ("ptrace")
-
-var dummy *byte
-const sizeofPtr uintptr = uintptr(unsafe.Sizeof(dummy))

libgo/syscalls/syscall_solaris_sparc64.go

-// syscall_solaris_sparc64.go -- Solaris/SPARCV9 specific support
-
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-import "unsafe"
-
-// FIXME: ptrace(3C) has this, but exec.go expects the next.
-//func libc_ptrace(request int, pid Pid_t, addr int, data int) int __asm__ ("ptrace")
-
-// 64-bit ptrace(3C) doesn't exist
-func libc_ptrace(request int, pid Pid_t, addr uintptr, data *byte) int {
-	SetErrno(ENOSYS)
-	return -1
-}
-
-var dummy *byte
-const sizeofPtr uintptr = uintptr(unsafe.Sizeof(dummy))

libgo/syscalls/syscall_stubs.go

-// syscall_stubs.go -- Stubs of the basic syscall interface.
-
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This package contains an interface to the low-level operating system
-// primitives.  The details vary depending on the underlying system.
-// Its primary use is inside other packages that provide a more portable
-// interface to the system, such as "os", "time" and "net".  Use those
-// packages rather than this one if you can.
-// For details of the functions and data types in this package consult
-// the manuals for the appropriate operating system.
-
-// These are stubs.
-
-package syscall
-
-func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
-  var r uintptr;
-  var i int;
-  i = -1;
-  r = uintptr(i);
-  return r, 0, uintptr(ENOSYS);
-}
-
-func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) {
-  var r uintptr;
-  var i int;
-  i = -1;
-  r = uintptr(i);
-  return r, 0, uintptr(ENOSYS);
-}

libgo/syscalls/syscall_unix.go

-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-import "unsafe"
-
-var (
-	Stdin  = 0
-	Stdout = 1
-	Stderr = 2
-)
-
-const ENONE = 0
-
-func GetErrno() int
-func SetErrno(int)
-
-func Uname(buf *Utsname) (errno int) {
-	r := libc_uname(buf)
-	if r < 0 {
-		errno = GetErrno()
-	}
-	return
-}
-
-var mapper = &mmapper{
-	active: make(map[*byte][]byte),
-	mmap:   mmap,
-	munmap: munmap,
-}
-
-func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, errno int) {
-	return mapper.Mmap(fd, offset, length, prot, flags)
-}
-
-func Munmap(b []byte) (errno int) {
-	return mapper.Munmap(b)
-}
-
-func libc_munmap(*byte, Size_t) int __asm__ ("munmap")
-
-func mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, errno int) {
-	r0 := libc_mmap((*byte)(unsafe.Pointer(addr)), Size_t(length), prot, flag, fd, Offset_t(pos))
-	ret = uintptr(unsafe.Pointer(r0))
-	if ret + 1 == 0 {
-		errno = GetErrno()
-	}
-	return
-}
-
-func munmap(addr uintptr, length uintptr) (errno int) {
-	if libc_munmap((*byte)(unsafe.Pointer(addr)), Size_t(length)) < 0 {
-		errno = GetErrno()
-	}
-	return
-}
-
-func libc_getrusage(who int, rusage *Rusage) int __asm__ ("getrusage")
-
-func Getrusage(who int, rusage *Rusage) (errno int) {
-	if libc_getrusage(who, rusage) < 0 {
-		errno = GetErrno()
-	}
-	return
-}

libgo/syscalls/sysfile_largefile.go

-// sysfile_largefile.go -- For systems which use the large file interface.
-
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-func libc_pread(fd int, buf *byte, count Size_t, offset Offset_t) Ssize_t __asm__ ("pread64")
-func libc_pwrite(fd int, buf *byte, count Size_t, offset Offset_t) Ssize_t __asm__ ("pwrite64")
-func libc_lseek(int, Offset_t, int) Offset_t __asm__ ("lseek64")
-func libc_truncate(path *byte, length Offset_t) int __asm__ ("truncate64")
-func libc_ftruncate(fd int, length Offset_t) int __asm__ ("ftruncate64")
-func libc_mmap(*byte, Size_t, int, int, int, Offset_t) *byte __asm__ ("mmap64")

libgo/syscalls/sysfile_regfile.go

-// sysfile_regfile.go -- For systems which do not use the large file interface.
-
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-func libc_pread(fd int, buf *byte, count Size_t, offset Offset_t) Ssize_t __asm__ ("pread")
-func libc_pwrite(fd int, buf *byte, count Size_t, offset Offset_t) Ssize_t __asm__ ("pwrite")
-func libc_lseek(int, Offset_t, int) Offset_t __asm__ ("lseek")
-func libc_truncate(path *byte, length Offset_t) int __asm__ ("truncate")
-func libc_ftruncate(fd int, length Offset_t) int __asm__ ("ftruncate")
-func libc_mmap(*byte, Size_t, int, int, int, Offset_t) *byte __asm__ ("mmap")

libgo/syscalls/sysfile_stat_largefile.go

-// sysfile_stat_largefile.go -- For systems which use the large file interface
-// for *stat.
-
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-func libc_stat(name *byte, buf *Stat_t) int __asm__ ("stat64");
-func libc_fstat(fd int, buf *Stat_t) int __asm__ ("fstat64");
-func libc_lstat(name *byte, buf *Stat_t) int __asm__ ("lstat64");

libgo/syscalls/sysfile_stat_regfile.go

-// sysfile_stat_regfile.go -- For systems which do not use the large file
-// interface for *stat.
-
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package syscall
-
-func libc_stat(name *byte, buf *Stat_t) int __asm__ ("stat");
-func libc_fstat(fd int, buf *Stat_t) int __asm__ ("fstat");
-func libc_lstat(name *byte, buf *Stat_t) int __asm__ ("lstat");

libgo/testsuite/Makefile.in

@@ -86,7 +86,10 @@ GOARCH = @GOARCH@
 GOC = @GOC@
 GOCFLAGS = @GOCFLAGS@
 GOOS = @GOOS@
-GO_SYSCALLS_SYSCALL_OS_ARCH_FILE = @GO_SYSCALLS_SYSCALL_OS_ARCH_FILE@
+GO_LIBCALL_OS_ARCH_FILE = @GO_LIBCALL_OS_ARCH_FILE@
+GO_LIBCALL_OS_FILE = @GO_LIBCALL_OS_FILE@
+GO_SYSCALL_OS_ARCH_FILE = @GO_SYSCALL_OS_ARCH_FILE@
+GO_SYSCALL_OS_FILE = @GO_SYSCALL_OS_FILE@
 GREP = @GREP@
 INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@