gnulib: import various network functions

Some sim ports use these to provide networking functionality via the
dv-sockser module or via direct emulation for a few ports.

Gdb seems to build just fine still too.

10 files changed, 497 insertions, 36 deletions

diff --git a/gnulib/import/Makefile.am b/gnulib/import/Makefile.am
index dafe63d..5a405cf 100644
--- a/gnulib/import/Makefile.am
+++ b/gnulib/import/Makefile.am
@@ -33,9 +33,12 @@
 #  --no-libtool \
 #  --macro-prefix=gl \
 #  --no-vc-files \
+#  accept \
 #  alloca \
+#  bind \
 #  canonicalize-lgpl \
 #  chown \
+#  connect \
 #  count-one-bits \
 #  dirent \
 #  dirfd \
@@ -52,6 +55,7 @@
 #  inet_ntop \
 #  inttypes \
 #  limits-h \
+#  listen \
 #  lstat \
 #  memchr \
 #  memmem \
@@ -65,7 +69,9 @@
 #  rename \
 #  select \
 #  setenv \
+#  setsockopt \
 #  signal-h \
+#  socket \
 #  strchrnul \
 #  strerror_r-posix \
 #  strstr \
@@ -115,6 +121,15 @@ HAVE_INCLUDE_NEXT = (__GNUC__ || __clang__ || 60000000 <= __DECC_VER)
 
 ## end   gnulib module absolute-header
 
+## begin gnulib module accept
+
+
+EXTRA_DIST += accept.c w32sock.h
+
+EXTRA_libgnu_a_SOURCES += accept.c
+
+## end   gnulib module accept
+
 ## begin gnulib module alloca
 
 
@@ -214,6 +229,15 @@ EXTRA_DIST += basename-lgpl.h
 
 ## end   gnulib module basename-lgpl
 
+## begin gnulib module bind
+
+
+EXTRA_DIST += bind.c w32sock.h
+
+EXTRA_libgnu_a_SOURCES += bind.c
+
+## end   gnulib module bind
+
 ## begin gnulib module btowc
 
 
@@ -276,6 +300,15 @@ EXTRA_libgnu_a_SOURCES += closedir.c
 
 ## end   gnulib module closedir
 
+## begin gnulib module connect
+
+
+EXTRA_DIST += connect.c w32sock.h
+
+EXTRA_libgnu_a_SOURCES += connect.c
+
+## end   gnulib module connect
+
 ## begin gnulib module count-one-bits
 
 libgnu_a_SOURCES += count-one-bits.c
@@ -976,6 +1009,15 @@ EXTRA_DIST += limits.in.h
 
 ## end   gnulib module limits-h
 
+## begin gnulib module listen
+
+
+EXTRA_DIST += listen.c w32sock.h
+
+EXTRA_libgnu_a_SOURCES += listen.c
+
+## end   gnulib module listen
+
 ## begin gnulib module localcharset
 
 libgnu_a_SOURCES += localcharset.c
@@ -1731,6 +1773,15 @@ EXTRA_libgnu_a_SOURCES += setlocale-lock.c
 
 ## end   gnulib module setlocale-null
 
+## begin gnulib module setsockopt
+
+
+EXTRA_DIST += setsockopt.c w32sock.h
+
+EXTRA_libgnu_a_SOURCES += setsockopt.c
+
+## end   gnulib module setsockopt
+
 ## begin gnulib module signal-h
 
 BUILT_SOURCES += signal.h
@@ -1821,6 +1872,15 @@ EXTRA_DIST += warn-on-use.h
 
 ## end   gnulib module snippet/warn-on-use
 
+## begin gnulib module socket
+
+
+EXTRA_DIST += socket.c w32sock.h
+
+EXTRA_libgnu_a_SOURCES += socket.c
+
+## end   gnulib module socket
+
 ## begin gnulib module sockets
 
 libgnu_a_SOURCES += sockets.h sockets.c
diff --git a/gnulib/import/Makefile.in b/gnulib/import/Makefile.in
index aae9711..3393458 100644
--- a/gnulib/import/Makefile.in
+++ b/gnulib/import/Makefile.in
@@ -47,9 +47,12 @@
 #  --no-libtool \
 #  --macro-prefix=gl \
 #  --no-vc-files \
+#  accept \
 #  alloca \
+#  bind \
 #  canonicalize-lgpl \
 #  chown \
+#  connect \
 #  count-one-bits \
 #  dirent \
 #  dirfd \
@@ -66,6 +69,7 @@
 #  inet_ntop \
 #  inttypes \
 #  limits-h \
+#  listen \
 #  lstat \
 #  memchr \
 #  memmem \
@@ -79,7 +83,9 @@
 #  rename \
 #  select \
 #  setenv \
+#  setsockopt \
 #  signal-h \
+#  socket \
 #  strchrnul \
 #  strerror_r-posix \
 #  strstr \
@@ -1820,10 +1826,11 @@ noinst_HEADERS =
 noinst_LIBRARIES = libgnu.a
 noinst_LTLIBRARIES = 
 # No GNU Make output.
-EXTRA_DIST = m4/gnulib-cache.m4 alloca.c alloca.in.h arpa_inet.in.h \
-	assure.h attribute.h basename-lgpl.h btowc.c \
-	canonicalize-lgpl.c chdir-long.c chdir-long.h chown.c \
-	fchown-stub.c cloexec.h close.c closedir.c dirent-private.h \
+EXTRA_DIST = m4/gnulib-cache.m4 accept.c w32sock.h alloca.c \
+	alloca.in.h arpa_inet.in.h assure.h attribute.h \
+	basename-lgpl.h bind.c w32sock.h btowc.c canonicalize-lgpl.c \
+	chdir-long.c chdir-long.h chown.c fchown-stub.c cloexec.h \
+	close.c closedir.c dirent-private.h connect.c w32sock.h \
 	count-one-bits.h ctype.in.h dirent.in.h dirfd.c dirname.h \
 	dup.c dup2.c eloop-threshold.h errno.in.h error.c error.h \
 	exitfail.h fchdir.c fcntl.c fcntl.in.h fd-hook.h fdopendir.c \
@@ -1838,8 +1845,8 @@ EXTRA_DIST = m4/gnulib-cache.m4 alloca.c alloca.in.h arpa_inet.in.h \
 	glob.in.h hard-locale.h inet_ntop.c intprops.h inttypes.in.h \
 	isblank.c float+.h isnan.c isnand-nolibm.h isnand.c float+.h \
 	isnan.c isnanl-nolibm.h isnanl.c cdefs.h libc-config.h \
-	limits.in.h localcharset.h locale.in.h lstat.c malloc.c \
-	malloca.h math.in.h lc-charset-dispatch.c \
+	limits.in.h listen.c w32sock.h localcharset.h locale.in.h \
+	lstat.c malloc.c malloca.h math.in.h lc-charset-dispatch.c \
 	lc-charset-dispatch.h mbrtowc-impl-utf8.h mbrtowc-impl.h \
 	mbrtowc.c mbtowc-lock.c mbtowc-lock.h windows-initguard.h \
 	mbsinit.c mbsrtowcs-impl.h mbsrtowcs-state.c mbsrtowcs.c \
@@ -1852,17 +1859,17 @@ EXTRA_DIST = m4/gnulib-cache.m4 alloca.c alloca.in.h arpa_inet.in.h \
 	readlink.c realloc.c rename.c dirent-private.h rewinddir.c \
 	rmdir.c same-inode.h save-cwd.h malloc/scratch_buffer.h \
 	scratch_buffer.h select.c setenv.c setlocale-lock.c \
-	setlocale_null.h windows-initguard.h signal.in.h _Noreturn.h \
-	arg-nonnull.h c++defs.h warn-on-use.h w32sock.h stat-w32.c \
-	stat-w32.h stat.c stat-time.h stdalign.in.h stdbool.in.h \
-	stddef.in.h stdint.in.h stdio.in.h stdlib.in.h strchrnul.c \
-	strchrnul.valgrind strdup.c streq.h strerror.c \
-	strerror-override.c strerror-override.h strerror_r.c \
-	string.in.h strings.in.h strnlen.c strstr.c str-two-way.h \
-	strstr.c strtok_r.c sys_random.in.h sys_select.in.h \
-	sys_socket.in.h sys_stat.in.h sys_time.in.h sys_types.in.h \
-	sys_uio.in.h sys_wait.in.h tempname.h time.in.h time_r.c \
-	unistd.in.h unistd--.h unistd-safer.h unsetenv.c \
+	setlocale_null.h windows-initguard.h setsockopt.c w32sock.h \
+	signal.in.h _Noreturn.h arg-nonnull.h c++defs.h warn-on-use.h \
+	socket.c w32sock.h w32sock.h stat-w32.c stat-w32.h stat.c \
+	stat-time.h stdalign.in.h stdbool.in.h stddef.in.h stdint.in.h \
+	stdio.in.h stdlib.in.h strchrnul.c strchrnul.valgrind strdup.c \
+	streq.h strerror.c strerror-override.c strerror-override.h \
+	strerror_r.c string.in.h strings.in.h strnlen.c strstr.c \
+	str-two-way.h strstr.c strtok_r.c sys_random.in.h \
+	sys_select.in.h sys_socket.in.h sys_stat.in.h sys_time.in.h \
+	sys_types.in.h sys_uio.in.h sys_wait.in.h tempname.h time.in.h \
+	time_r.c unistd.in.h unistd--.h unistd-safer.h unsetenv.c \
 	$(top_srcdir)/import/extra/update-copyright verify.h \
 	wchar.in.h wctype.in.h windows-initguard.h windows-mutex.c \
 	windows-mutex.h windows-once.c windows-once.h \
@@ -1912,25 +1919,26 @@ libgnu_a_SOURCES = openat-priv.h openat-proc.c basename-lgpl.c \
 	dup-safer.c fd-safer.c pipe-safer.c wctype-h.c
 libgnu_a_LIBADD = $(gl_LIBOBJS) @ALLOCA@
 libgnu_a_DEPENDENCIES = $(gl_LIBOBJS) @ALLOCA@
-EXTRA_libgnu_a_SOURCES = alloca.c btowc.c canonicalize-lgpl.c \
-	chdir-long.c chown.c fchown-stub.c close.c closedir.c dirfd.c \
-	dup.c dup2.c error.c fchdir.c fcntl.c fdopendir.c ffs.c \
-	float.c itold.c fnmatch.c fnmatch_loop.c fnmatch.c free.c \
-	frexp.c frexp.c frexpl.c fstat.c stat-w32.c at-func.c \
-	fstatat.c getcwd.c getcwd-lgpl.c getdelim.c getdtablesize.c \
-	getline.c getlogin_r.c getrandom.c gettimeofday.c glob.c \
-	glob_pattern_p.c globfree.c inet_ntop.c isblank.c isnan.c \
-	isnand.c isnan.c isnanl.c lstat.c malloc.c \
-	lc-charset-dispatch.c mbrtowc.c mbtowc-lock.c mbsinit.c \
-	mbsrtowcs-state.c mbsrtowcs.c mbtowc.c memchr.c memmem.c \
-	memmem.c mempcpy.c memrchr.c mkdir.c mkdtemp.c mkostemp.c \
-	msvc-inval.c msvc-nothrow.c open.c openat.c opendir.c pipe.c \
-	rawmemchr.c readdir.c readlink.c realloc.c rename.c \
-	rewinddir.c rmdir.c select.c setenv.c setlocale-lock.c \
-	stat-w32.c stat.c strchrnul.c strdup.c strerror.c \
-	strerror-override.c strerror_r.c strnlen.c strstr.c strstr.c \
-	strtok_r.c time_r.c unsetenv.c windows-mutex.c windows-once.c \
-	windows-recmutex.c windows-rwlock.c wmemchr.c wmempcpy.c
+EXTRA_libgnu_a_SOURCES = accept.c alloca.c bind.c btowc.c \
+	canonicalize-lgpl.c chdir-long.c chown.c fchown-stub.c close.c \
+	closedir.c connect.c dirfd.c dup.c dup2.c error.c fchdir.c \
+	fcntl.c fdopendir.c ffs.c float.c itold.c fnmatch.c \
+	fnmatch_loop.c fnmatch.c free.c frexp.c frexp.c frexpl.c \
+	fstat.c stat-w32.c at-func.c fstatat.c getcwd.c getcwd-lgpl.c \
+	getdelim.c getdtablesize.c getline.c getlogin_r.c getrandom.c \
+	gettimeofday.c glob.c glob_pattern_p.c globfree.c inet_ntop.c \
+	isblank.c isnan.c isnand.c isnan.c isnanl.c listen.c lstat.c \
+	malloc.c lc-charset-dispatch.c mbrtowc.c mbtowc-lock.c \
+	mbsinit.c mbsrtowcs-state.c mbsrtowcs.c mbtowc.c memchr.c \
+	memmem.c memmem.c mempcpy.c memrchr.c mkdir.c mkdtemp.c \
+	mkostemp.c msvc-inval.c msvc-nothrow.c open.c openat.c \
+	opendir.c pipe.c rawmemchr.c readdir.c readlink.c realloc.c \
+	rename.c rewinddir.c rmdir.c select.c setenv.c \
+	setlocale-lock.c setsockopt.c socket.c stat-w32.c stat.c \
+	strchrnul.c strdup.c strerror.c strerror-override.c \
+	strerror_r.c strnlen.c strstr.c strstr.c strtok_r.c time_r.c \
+	unsetenv.c windows-mutex.c windows-once.c windows-recmutex.c \
+	windows-rwlock.c wmemchr.c wmempcpy.c
 
 # Use this preprocessor expression to decide whether #include_next works.
 # Do not rely on a 'configure'-time test for this, since the expression
@@ -2042,9 +2050,11 @@ mostlyclean-compile:
 distclean-compile:
 	-rm -f *.tab.c
 
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/accept.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/alloca.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/at-func.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/basename-lgpl.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/bind.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/btowc.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/canonicalize-lgpl.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/chdir-long.Po@am__quote@
@@ -2052,6 +2062,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cloexec.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/close.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/closedir.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/connect.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/count-one-bits.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/dirfd.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/dirname-lgpl.Po@am__quote@
@@ -2098,6 +2109,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/isnanl.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/itold.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/lc-charset-dispatch.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/listen.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/localcharset.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/lstat.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/malloc.Po@am__quote@
@@ -2137,6 +2149,8 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/setenv.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/setlocale-lock.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/setlocale_null.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/setsockopt.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/socket.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sockets.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stat-time.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stat-w32.Po@am__quote@
diff --git a/gnulib/import/accept.c b/gnulib/import/accept.c
new file mode 100644
index 0000000..a7d5743
--- /dev/null
+++ b/gnulib/import/accept.c
@@ -0,0 +1,52 @@
+/* accept.c --- wrappers for Windows accept function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef accept
+
+int
+rpl_accept (int fd, struct sockaddr *addr, socklen_t *addrlen)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      SOCKET fh = accept (sock, addr, addrlen);
+      if (fh == INVALID_SOCKET)
+        {
+          set_winsock_errno ();
+          return -1;
+        }
+      else
+        return SOCKET_TO_FD (fh);
+    }
+}
diff --git a/gnulib/import/bind.c b/gnulib/import/bind.c
new file mode 100644
index 0000000..467da95
--- /dev/null
+++ b/gnulib/import/bind.c
@@ -0,0 +1,49 @@
+/* bind.c --- wrappers for Windows bind function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef bind
+
+int
+rpl_bind (int fd, const struct sockaddr *sockaddr, socklen_t len)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      int r = bind (sock, sockaddr, len);
+      if (r < 0)
+        set_winsock_errno ();
+
+      return r;
+    }
+}
diff --git a/gnulib/import/connect.c b/gnulib/import/connect.c
new file mode 100644
index 0000000..6dc1107
--- /dev/null
+++ b/gnulib/import/connect.c
@@ -0,0 +1,56 @@
+/* connect.c --- wrappers for Windows connect function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef connect
+
+int
+rpl_connect (int fd, const struct sockaddr *sockaddr, socklen_t len)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      int r = connect (sock, sockaddr, len);
+      if (r < 0)
+        {
+          /* EINPROGRESS is not returned by WinSock 2.0; for backwards
+             compatibility, connect(2) uses EWOULDBLOCK.  */
+          if (WSAGetLastError () == WSAEWOULDBLOCK)
+            WSASetLastError (WSAEINPROGRESS);
+
+          set_winsock_errno ();
+        }
+
+      return r;
+    }
+}
diff --git a/gnulib/import/listen.c b/gnulib/import/listen.c
new file mode 100644
index 0000000..0645e2e
--- /dev/null
+++ b/gnulib/import/listen.c
@@ -0,0 +1,49 @@
+/* listen.c --- wrappers for Windows listen function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef listen
+
+int
+rpl_listen (int fd, int backlog)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      int r = listen (sock, backlog);
+      if (r < 0)
+        set_winsock_errno ();
+
+      return r;
+    }
+}
diff --git a/gnulib/import/m4/gnulib-cache.m4 b/gnulib/import/m4/gnulib-cache.m4
index 5396840..381cdde 100644
--- a/gnulib/import/m4/gnulib-cache.m4
+++ b/gnulib/import/m4/gnulib-cache.m4
@@ -38,9 +38,12 @@
 #  --no-libtool \
 #  --macro-prefix=gl \
 #  --no-vc-files \
+#  accept \
 #  alloca \
+#  bind \
 #  canonicalize-lgpl \
 #  chown \
+#  connect \
 #  count-one-bits \
 #  dirent \
 #  dirfd \
@@ -57,6 +60,7 @@
 #  inet_ntop \
 #  inttypes \
 #  limits-h \
+#  listen \
 #  lstat \
 #  memchr \
 #  memmem \
@@ -70,7 +74,9 @@
 #  rename \
 #  select \
 #  setenv \
+#  setsockopt \
 #  signal-h \
+#  socket \
 #  strchrnul \
 #  strerror_r-posix \
 #  strstr \
@@ -87,9 +93,12 @@
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([])
 gl_MODULES([
+  accept
   alloca
+  bind
   canonicalize-lgpl
   chown
+  connect
   count-one-bits
   dirent
   dirfd
@@ -106,6 +115,7 @@ gl_MODULES([
   inet_ntop
   inttypes
   limits-h
+  listen
   lstat
   memchr
   memmem
@@ -119,7 +129,9 @@ gl_MODULES([
   rename
   select
   setenv
+  setsockopt
   signal-h
+  socket
   strchrnul
   strerror_r-posix
   strstr
diff --git a/gnulib/import/m4/gnulib-comp.m4 b/gnulib/import/m4/gnulib-comp.m4
index 54ae5bb..5376a93 100644
--- a/gnulib/import/m4/gnulib-comp.m4
+++ b/gnulib/import/m4/gnulib-comp.m4
@@ -44,6 +44,7 @@ AC_DEFUN([gl_EARLY],
 
   AC_REQUIRE([AM_PROG_CC_C_O])
   # Code from module absolute-header:
+  # Code from module accept:
   # Code from module alloca:
   # Code from module alloca-opt:
   # Code from module arpa_inet:
@@ -51,6 +52,7 @@ AC_DEFUN([gl_EARLY],
   # Code from module at-internal:
   # Code from module attribute:
   # Code from module basename-lgpl:
+  # Code from module bind:
   # Code from module btowc:
   # Code from module builtin-expect:
   # Code from module c99:
@@ -62,6 +64,7 @@ AC_DEFUN([gl_EARLY],
   # Code from module cloexec:
   # Code from module close:
   # Code from module closedir:
+  # Code from module connect:
   # Code from module count-one-bits:
   # Code from module ctype:
   # Code from module d-ino:
@@ -129,6 +132,7 @@ AC_DEFUN([gl_EARLY],
   AC_REQUIRE([AC_SYS_LARGEFILE])
   # Code from module libc-config:
   # Code from module limits-h:
+  # Code from module listen:
   # Code from module localcharset:
   # Code from module locale:
   # Code from module lock:
@@ -175,11 +179,13 @@ AC_DEFUN([gl_EARLY],
   # Code from module select:
   # Code from module setenv:
   # Code from module setlocale-null:
+  # Code from module setsockopt:
   # Code from module signal-h:
   # Code from module snippet/_Noreturn:
   # Code from module snippet/arg-nonnull:
   # Code from module snippet/c++defs:
   # Code from module snippet/warn-on-use:
+  # Code from module socket:
   # Code from module socketlib:
   # Code from module sockets:
   # Code from module socklen:
@@ -251,10 +257,20 @@ AC_DEFUN([gl_INIT],
   m4_pushdef([gl_LIBSOURCES_DIR], [])
   gl_COMMON
   gl_source_base='import'
+  AC_REQUIRE([gl_HEADER_SYS_SOCKET])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    AC_LIBOBJ([accept])
+  fi
+  gl_SYS_SOCKET_MODULE_INDICATOR([accept])
   gl_FUNC_ALLOCA
   gl_HEADER_ARPA_INET
   AC_PROG_MKDIR_P
   AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_HEADER_SYS_SOCKET])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    AC_LIBOBJ([bind])
+  fi
+  gl_SYS_SOCKET_MODULE_INDICATOR([bind])
   gl_FUNC_BTOWC
   if test $HAVE_BTOWC = 0 || test $REPLACE_BTOWC = 1; then
     AC_LIBOBJ([btowc])
@@ -295,6 +311,11 @@ AC_DEFUN([gl_INIT],
     AC_LIBOBJ([closedir])
   fi
   gl_DIRENT_MODULE_INDICATOR([closedir])
+  AC_REQUIRE([gl_HEADER_SYS_SOCKET])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    AC_LIBOBJ([connect])
+  fi
+  gl_SYS_SOCKET_MODULE_INDICATOR([connect])
   gl_CTYPE_H
   gl_CHECK_TYPE_STRUCT_DIRENT_D_INO
   gl_CHECK_TYPE_STRUCT_DIRENT_D_TYPE
@@ -498,6 +519,11 @@ AC_DEFUN([gl_INIT],
   AC_REQUIRE([gl_LARGEFILE])
   gl___INLINE
   gl_LIMITS_H
+  AC_REQUIRE([gl_HEADER_SYS_SOCKET])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    AC_LIBOBJ([listen])
+  fi
+  gl_SYS_SOCKET_MODULE_INDICATOR([listen])
   gl_LOCALCHARSET
   dnl For backward compatibility. Some packages still use this.
   LOCALCHARSET_TESTS_ENVIRONMENT=
@@ -685,7 +711,26 @@ AC_DEFUN([gl_INIT],
     gl_PREREQ_SETLOCALE_LOCK
   fi
   gl_LOCALE_MODULE_INDICATOR([setlocale_null])
+  AC_REQUIRE([gl_HEADER_SYS_SOCKET])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    AC_LIBOBJ([setsockopt])
+  fi
+  gl_SYS_SOCKET_MODULE_INDICATOR([setsockopt])
   gl_SIGNAL_H
+  AC_REQUIRE([gl_HEADER_SYS_SOCKET])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    AC_LIBOBJ([socket])
+  fi
+  # When this module is used, sockets may actually occur as file descriptors,
+  # hence it is worth warning if the modules 'close' and 'ioctl' are not used.
+  m4_ifdef([gl_UNISTD_H_DEFAULTS], [AC_REQUIRE([gl_UNISTD_H_DEFAULTS])])
+  m4_ifdef([gl_SYS_IOCTL_H_DEFAULTS], [AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])])
+  AC_REQUIRE([gl_PREREQ_SYS_H_WINSOCK2])
+  if test "$ac_cv_header_winsock2_h" = yes; then
+    UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=1
+    SYS_IOCTL_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=1
+  fi
+  gl_SYS_SOCKET_MODULE_INDICATOR([socket])
   AC_REQUIRE([gl_SOCKETLIB])
   AC_REQUIRE([gl_SOCKETS])
   gl_TYPE_SOCKLEN_T
@@ -980,6 +1025,7 @@ AC_DEFUN([gl_FILE_LIST], [
   doc/gendocs_template
   doc/gendocs_template_min
   lib/_Noreturn.h
+  lib/accept.c
   lib/alloca.c
   lib/alloca.in.h
   lib/arg-nonnull.h
@@ -989,6 +1035,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/attribute.h
   lib/basename-lgpl.c
   lib/basename-lgpl.h
+  lib/bind.c
   lib/btowc.c
   lib/c++defs.h
   lib/canonicalize-lgpl.c
@@ -1000,6 +1047,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/cloexec.h
   lib/close.c
   lib/closedir.c
+  lib/connect.c
   lib/count-one-bits.c
   lib/count-one-bits.h
   lib/ctype.in.h
@@ -1081,6 +1129,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/lc-charset-dispatch.h
   lib/libc-config.h
   lib/limits.in.h
+  lib/listen.c
   lib/localcharset.c
   lib/localcharset.h
   lib/locale.in.h
@@ -1148,7 +1197,9 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/setlocale-lock.c
   lib/setlocale_null.c
   lib/setlocale_null.h
+  lib/setsockopt.c
   lib/signal.in.h
+  lib/socket.c
   lib/sockets.c
   lib/sockets.h
   lib/stat-time.c
diff --git a/gnulib/import/setsockopt.c b/gnulib/import/setsockopt.c
new file mode 100644
index 0000000..b6f5dfc
--- /dev/null
+++ b/gnulib/import/setsockopt.c
@@ -0,0 +1,65 @@
+/* setsockopt.c --- wrappers for Windows setsockopt function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get struct timeval. */
+#include <sys/time.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef setsockopt
+
+int
+rpl_setsockopt (int fd, int level, int optname, const void *optval, socklen_t optlen)
+{
+  SOCKET sock = FD_TO_SOCKET (fd);
+  int r;
+
+  if (sock == INVALID_SOCKET)
+    {
+      errno = EBADF;
+      return -1;
+    }
+  else
+    {
+      if (level == SOL_SOCKET
+          && (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
+        {
+          const struct timeval *tv = optval;
+          int milliseconds = tv->tv_sec * 1000 + tv->tv_usec / 1000;
+          optval = &milliseconds;
+          r = setsockopt (sock, level, optname, optval, sizeof (int));
+        }
+      else
+        {
+          r = setsockopt (sock, level, optname, optval, optlen);
+        }
+
+      if (r < 0)
+        set_winsock_errno ();
+
+      return r;
+    }
+}
diff --git a/gnulib/import/socket.c b/gnulib/import/socket.c
new file mode 100644
index 0000000..f5086ad
--- /dev/null
+++ b/gnulib/import/socket.c
@@ -0,0 +1,53 @@
+/* socket.c --- wrappers for Windows socket function
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#include "sockets.h"
+
+/* Don't assume that UNICODE is defined.  */
+#undef WSASocket
+#define WSASocket WSASocketW
+
+int
+rpl_socket (int domain, int type, int protocol)
+{
+  SOCKET fh;
+
+  gl_sockets_startup (SOCKETS_1_1);
+
+  /* We have to use WSASocket() to create non-overlapped IO sockets.
+     Overlapped IO sockets cannot be used with read/write.  */
+  fh = WSASocket (domain, type, protocol, NULL, 0, 0);
+
+  if (fh == INVALID_SOCKET)
+    {
+      set_winsock_errno ();
+      return -1;
+    }
+  else
+    return SOCKET_TO_FD (fh);
+}