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authormbalmer <mbalmer@NetBSD.org>2013-10-16 19:44:57 +0000
committermbalmer <mbalmer@NetBSD.org>2013-10-16 19:44:57 +0000
commite0fe45ce9c35c204a7c19d5a5291ca64b47b2452 (patch)
treee871dc37f16f51aff76180bb26119b0ced6630a4 /sys/modules
parenta1bd524499a4e93e3f6f934dc1e6f644595e0a89 (diff)
welcome lua(4), a devide driver that can create and control Lua states inside the kernel
Diffstat (limited to 'sys/modules')
-rw-r--r--sys/modules/lua/Makefile48
-rw-r--r--sys/modules/lua/assert.h34
-rw-r--r--sys/modules/lua/ctype.h66
-rw-r--r--sys/modules/lua/errno.h8
-rw-r--r--sys/modules/lua/infinite.lua2
-rw-r--r--sys/modules/lua/inttypes.h6
-rw-r--r--sys/modules/lua/limits.h8
-rw-r--r--sys/modules/lua/locale.h47
-rw-r--r--sys/modules/lua/lua.c862
-rw-r--r--sys/modules/lua/luaconf.h791
-rw-r--r--sys/modules/lua/luavar.h49
-rw-r--r--sys/modules/lua/math.h6
-rw-r--r--sys/modules/lua/setjmp.h10
-rw-r--r--sys/modules/lua/signal.h6
-rw-r--r--sys/modules/lua/stdarg.h8
-rw-r--r--sys/modules/lua/stddef.h16
-rw-r--r--sys/modules/lua/stdio.h49
-rw-r--r--sys/modules/lua/stdlib.h48
-rw-r--r--sys/modules/lua/string.h21
-rw-r--r--sys/modules/lua/test.lua8
20 files changed, 2093 insertions, 0 deletions
diff --git a/sys/modules/lua/Makefile b/sys/modules/lua/Makefile
new file mode 100644
index 00000000000..c7abeb93028
--- /dev/null
+++ b/sys/modules/lua/Makefile
@@ -0,0 +1,48 @@
+# $NetBSD: Makefile,v 1.1 2013/10/16 19:44:57 mbalmer Exp $
+
+.include "../Makefile.inc"
+
+.PATH: ${S}/../external/mit/lua/dist/src \
+ ${S}/../lib/libc/string
+
+KMOD= lua
+SRCS= lua.c
+
+WARNS= 1
+
+# Lua source code
+SRCS+= lapi.c \
+ lcode.c \
+ ldebug.c \
+ ldo.c \
+ ldump.c \
+ lfunc.c \
+ lgc.c \
+ llex.c \
+ lmem.c \
+ lobject.c \
+ lopcodes.c \
+ lparser.c \
+ lstate.c \
+ lstring.c \
+ ltable.c \
+ ltm.c \
+ lundump.c \
+ lvm.c \
+ lzio.c \
+ # lauxlib.c \
+ ltablib.c \
+ lstrlib.c \
+ lbaselib.c \
+ linit.c
+
+# Compatability code
+SRCS+= strcspn.c \
+ strncat.c \
+ strpbrk.c \
+ strspn.c
+
+CPPFLAGS+= -include ${.CURDIR}/luaconf.h \
+ -I${S}/../external/mit/lua/dist/src
+
+.include <bsd.kmodule.mk>
diff --git a/sys/modules/lua/assert.h b/sys/modules/lua/assert.h
new file mode 100644
index 00000000000..01d6c343a5b
--- /dev/null
+++ b/sys/modules/lua/assert.h
@@ -0,0 +1,34 @@
+/* $NetBSD */
+
+/*
+ * Copyright (c) 2011, Marc Balmer <mbalmer@NetBSD.org>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the Author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
diff --git a/sys/modules/lua/ctype.h b/sys/modules/lua/ctype.h
new file mode 100644
index 00000000000..192ae7dc17c
--- /dev/null
+++ b/sys/modules/lua/ctype.h
@@ -0,0 +1,66 @@
+/* $NetBSD */
+
+/*
+ * Copyright (c) 2011, Lourival Neto <lneto@NetBSD.org>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the Author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
+
+#include <sys/systm.h>
+
+#ifndef _LUA_INCLUDE_CTYPE_
+#define _LUA_INCLUDE_CTYPE_
+
+LIBKERN_INLINE int
+isalnum(int ch)
+{
+ return (isalpha(ch) || isdigit(ch));
+}
+
+LIBKERN_INLINE int
+iscntrl(int ch)
+{
+ return ((ch >= 0x00 && ch <= 0x1F) || ch == 0x7F);
+}
+
+LIBKERN_INLINE int
+isprint(int ch)
+{
+ return (ch >= 0x20 && ch <= 0x7E);
+}
+
+LIBKERN_INLINE int
+ispunct(int ch)
+{
+ return (isprint(ch) && ch != ' ' && !isalnum(ch));
+}
+
+#endif
+
diff --git a/sys/modules/lua/errno.h b/sys/modules/lua/errno.h
new file mode 100644
index 00000000000..c033853cb0e
--- /dev/null
+++ b/sys/modules/lua/errno.h
@@ -0,0 +1,8 @@
+/* $NetBSD */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
+
+#include <sys/errno.h>
diff --git a/sys/modules/lua/infinite.lua b/sys/modules/lua/infinite.lua
new file mode 100644
index 00000000000..dba872d43f6
--- /dev/null
+++ b/sys/modules/lua/infinite.lua
@@ -0,0 +1,2 @@
+while (1) do end
+
diff --git a/sys/modules/lua/inttypes.h b/sys/modules/lua/inttypes.h
new file mode 100644
index 00000000000..c36e14b0146
--- /dev/null
+++ b/sys/modules/lua/inttypes.h
@@ -0,0 +1,6 @@
+/* $NetBSD: inttypes.h,v 1.1 2013/10/16 19:44:57 mbalmer Exp $ */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
diff --git a/sys/modules/lua/limits.h b/sys/modules/lua/limits.h
new file mode 100644
index 00000000000..5c922c60c1e
--- /dev/null
+++ b/sys/modules/lua/limits.h
@@ -0,0 +1,8 @@
+/* $NetBSD */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
+
+#include <machine/limits.h>
diff --git a/sys/modules/lua/locale.h b/sys/modules/lua/locale.h
new file mode 100644
index 00000000000..17cb5ebe29b
--- /dev/null
+++ b/sys/modules/lua/locale.h
@@ -0,0 +1,47 @@
+/* $NetBSD */
+
+/*
+ * Copyright (c) 2011, Lourival Neto <lneto@NetBSD.org>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the Author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
+
+#include <sys/null.h>
+
+#ifndef _LUA_INCLUDE_LOCALE_
+#define _LUA_INCLUDE_LOCALE_
+
+struct lconv {
+ char *decimal_point;
+};
+
+#define localeconv() NULL
+#endif
+
diff --git a/sys/modules/lua/lua.c b/sys/modules/lua/lua.c
new file mode 100644
index 00000000000..7fd0001a186
--- /dev/null
+++ b/sys/modules/lua/lua.c
@@ -0,0 +1,862 @@
+/* $NetBSD */
+
+/*
+ * Copyright (c) 2011 by Marc Balmer <mbalmer@NetBSD.org>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the Author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* Lua device driver */
+
+#include <sys/param.h>
+#include <sys/fcntl.h>
+#include <sys/conf.h>
+#include <sys/condvar.h>
+#include <sys/device.h>
+#include <sys/ioctl.h>
+#include <sys/lock.h>
+#include <sys/lua.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/namei.h>
+#include <sys/queue.h>
+#include <sys/sysctl.h>
+#include <sys/vnode.h>
+
+#include <lauxlib.h>
+
+#include "luavar.h"
+
+struct lua_softc {
+ device_t sc_dev;
+
+ kmutex_t sc_lock;
+ kcondvar_t sc_inuse_cv;
+ bool sc_inuse;
+
+ /* Locking access to state queues */
+ kmutex_t sc_state_lock;
+ kcondvar_t sc_state_cv;
+ bool sc_state;
+
+ struct sysctllog *sc_log;
+};
+
+static device_t sc_self;
+static bool lua_autoload_on = true;
+static bool lua_require_on = true;
+static bool lua_bytecode_on = false;
+static int lua_verbose;
+static int lua_max_instr;
+
+static LIST_HEAD(, lua_state) lua_states;
+static LIST_HEAD(, lua_module) lua_modules;
+
+static int lua_match(device_t, cfdata_t, void *);
+static void lua_attach(device_t, device_t, void *);
+static int lua_detach(device_t, int);
+static klua_State *klua_find(const char *);
+static const char *lua_reader(lua_State *, void *, size_t *);
+static void lua_maxcount(lua_State *, lua_Debug *);
+
+static int lua_require(lua_State *);
+
+CFATTACH_DECL_NEW(lua, sizeof(struct lua_softc),
+ lua_match, lua_attach, lua_detach, NULL);
+
+dev_type_open(luaopen);
+dev_type_close(luaclose);
+dev_type_ioctl(luaioctl);
+
+const struct cdevsw lua_cdevsw = {
+ luaopen, luaclose, noread, nowrite, luaioctl, nostop, notty,
+ nopoll, nommap, nokqfilter, D_OTHER | D_MPSAFE
+};
+
+struct lua_loadstate {
+ struct vnode *vp;
+ size_t size;
+ off_t off;
+};
+
+extern struct cfdriver lua_cd;
+
+static int
+lua_match(device_t parent, cfdata_t match, void *aux)
+{
+ return 1;
+}
+
+static void
+lua_attach(device_t parent, device_t self, void *aux)
+{
+ struct lua_softc *sc;
+ const struct sysctlnode *node;
+
+ if (sc_self)
+ return;
+
+ sc = device_private(self);
+ sc->sc_dev = self;
+ sc_self = self;
+
+ mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_VM);
+ cv_init(&sc->sc_inuse_cv, "luactl");
+
+ mutex_init(&sc->sc_state_lock, MUTEX_DEFAULT, IPL_VM);
+ cv_init(&sc->sc_state_cv, "luastate");
+
+ pmf_device_register(self, NULL, NULL);
+
+ /* Sysctl to provide some control over behaviour */
+ sysctl_createv(NULL, 0, NULL, NULL,
+ CTLFLAG_PERMANENT,
+ CTLTYPE_NODE, "kern", NULL,
+ NULL, 0, NULL, 0,
+ CTL_KERN, CTL_EOL);
+ sysctl_createv(&sc->sc_log, 0, NULL, &node,
+ CTLFLAG_OWNDESC,
+ CTLTYPE_NODE, "lua",
+ SYSCTL_DESCR("Lua options"),
+ NULL, 0, NULL, 0,
+ CTL_KERN, CTL_CREATE, CTL_EOL);
+
+ if (node == NULL) {
+ printf(": can't create sysctl node\n");
+ return;
+ }
+
+ /*
+ * XXX Some of the sysctl values must not be changed after the
+ * securelevel has been raised.
+ */
+ sysctl_createv(&sc->sc_log, 0, &node, NULL,
+ CTLFLAG_READWRITE | CTLFLAG_OWNDESC,
+ CTLTYPE_BOOL, "require",
+ SYSCTL_DESCR("Enable the require command"),
+ NULL, 0, &lua_require_on, 0,
+ CTL_CREATE, CTL_EOL);
+
+ sysctl_createv(&sc->sc_log, 0, &node, NULL,
+ CTLFLAG_READWRITE | CTLFLAG_OWNDESC,
+ CTLTYPE_BOOL, "autoload",
+ SYSCTL_DESCR("Enable automatic load of modules"),
+ NULL, 0, &lua_autoload_on, 0,
+ CTL_CREATE, CTL_EOL);
+
+ sysctl_createv(&sc->sc_log, 0, &node, NULL,
+ CTLFLAG_READWRITE | CTLFLAG_OWNDESC,
+ CTLTYPE_BOOL, "bytecode",
+ SYSCTL_DESCR("Enable loading of bytecode"),
+ NULL, 0, &lua_bytecode_on, 0,
+ CTL_CREATE, CTL_EOL);
+
+ sysctl_createv(&sc->sc_log, 0, &node, NULL,
+ CTLFLAG_READWRITE | CTLFLAG_OWNDESC,
+ CTLTYPE_INT, "verbose",
+ SYSCTL_DESCR("Enable verbose output"),
+ NULL, 0, &lua_verbose, 0,
+ CTL_CREATE, CTL_EOL);
+
+ sysctl_createv(&sc->sc_log, 0, &node, NULL,
+ CTLFLAG_READWRITE | CTLFLAG_OWNDESC,
+ CTLTYPE_INT, "maxcount",
+ SYSCTL_DESCR("Limit maximum instruction count"),
+ NULL, 0, &lua_max_instr, 0,
+ CTL_CREATE, CTL_EOL);
+
+ aprint_normal_dev(self, "%s %s\n", LUA_RELEASE, LUA_COPYRIGHT);
+}
+
+static int
+lua_detach(device_t self, int flags)
+{
+ struct lua_softc *sc;
+ struct lua_state *s;
+
+ sc = device_private(self);
+ pmf_device_deregister(self);
+
+ if (sc->sc_log != NULL) {
+ sysctl_teardown(&sc->sc_log);
+ sc->sc_log = NULL;
+ }
+
+ /* Traverse the list of states and close them */
+ while ((s = LIST_FIRST(&lua_states)) != NULL) {
+ LIST_REMOVE(s, lua_next);
+ klua_close(s->K);
+ if (lua_verbose)
+ device_printf(self, "state %s destroyed\n",
+ s->lua_name);
+ free(s, NULL);
+ }
+ mutex_destroy(&sc->sc_lock);
+ cv_destroy(&sc->sc_inuse_cv);
+ mutex_destroy(&sc->sc_state_lock);
+ cv_destroy(&sc->sc_state_cv);
+ sc_self = NULL;
+ return 0;
+}
+
+int
+luaopen(dev_t dev, int flag, int mode, struct lwp *l)
+{
+ struct lua_softc *sc;
+ int error;
+
+ if (minor(dev) > 0)
+ return ENXIO;
+
+ sc = device_lookup_private(&lua_cd, minor(dev));
+ if (sc == NULL)
+ return ENXIO;
+
+ mutex_enter(&sc->sc_lock);
+ while (sc->sc_inuse == true) {
+ error = cv_wait_sig(&sc->sc_inuse_cv, &sc->sc_lock);
+ if (error)
+ break;
+ }
+ if (!error)
+ sc->sc_inuse = true;
+ mutex_exit(&sc->sc_lock);
+
+ if (error)
+ return error;
+ return 0;
+}
+
+int
+luaclose(dev_t dev, int flag, int mode, struct lwp *l)
+{
+ struct lua_softc *sc;
+
+ if (minor(dev) > 0)
+ return ENXIO;
+ sc = device_lookup_private(&lua_cd, minor(dev));
+ mutex_enter(&sc->sc_lock);
+ sc->sc_inuse = false;
+ cv_signal(&sc->sc_inuse_cv);
+ mutex_exit(&sc->sc_lock);
+ return 0;
+}
+
+int
+luaioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
+{
+ struct lua_softc *sc;
+ struct lua_info *info;
+ struct lua_create *create;
+ struct lua_require *require;
+ struct lua_load *load;
+ struct lua_state *s;
+ struct lua_module *m;
+ kauth_cred_t cred;
+ struct nameidata nd;
+ struct pathbuf *pb;
+ struct vattr va;
+ struct lua_loadstate ls;
+ int error, n;
+ klua_State *K;
+
+ sc = device_lookup_private(&lua_cd, minor(dev));
+ if (!device_is_active(sc->sc_dev))
+ return EBUSY;
+
+ switch (cmd) {
+ case LUAINFO:
+ info = data;
+ if (info->states == NULL) {
+ info->num_states = 0;
+ LIST_FOREACH(s, &lua_states, lua_next)
+ info->num_states++;
+ } else {
+ n = 0;
+ LIST_FOREACH(s, &lua_states, lua_next) {
+ if (n > info->num_states)
+ break;
+ copyoutstr(s->lua_name, info->states[n].name,
+ MAX_LUA_NAME, NULL);
+ copyoutstr(s->lua_desc, info->states[n].desc,
+ MAX_LUA_DESC, NULL);
+ info->states[n].user = s->K->ks_user;
+ n++;
+ }
+ info->num_states = n;
+ }
+ break;
+ case LUACREATE:
+ create = data;
+
+ if (*create->name == '_') {
+ if (lua_verbose)
+ device_printf(sc->sc_dev, "names of user "
+ "created states must not begin with '_'");
+ return ENXIO;
+ }
+ LIST_FOREACH(s, &lua_states, lua_next)
+ if (!strcmp(s->lua_name, create->name)) {
+ if (lua_verbose)
+ device_printf(sc->sc_dev,
+ "state %s exists\n", create->name);
+ return EBUSY;
+ }
+
+ K = klua_newstate(lua_alloc, NULL, create->name,
+ create->desc);
+ K->ks_user = true;
+
+ if (K == NULL)
+ return ENOMEM;
+ if (lua_verbose)
+ device_printf(sc->sc_dev, "state %s created\n",
+ create->name);
+ break;
+ case LUADESTROY:
+ create = data;
+
+ K = klua_find(create->name);
+
+ if (K != NULL && (K->ks_user == true)) {
+ klua_close(K);
+ return 0;
+ }
+ return EBUSY;
+ case LUAREQUIRE: /* 'require' a module in a State */
+ require = data;
+ LIST_FOREACH(s, &lua_states, lua_next)
+ if (!strcmp(s->lua_name, require->state))
+ LIST_FOREACH(m, &lua_modules, mod_next)
+ if (!strcmp(m->mod_name,
+ require->module)) {
+ if (lua_verbose)
+ device_printf(
+ sc->sc_dev,
+ "requiring module "
+ "%s to state %s\n",
+ m->mod_name,
+ s->lua_name);
+ m->open(s->K->L);
+ m->refcount++;
+ LIST_INSERT_HEAD(
+ &s->lua_modules, m,
+ mod_next);
+ return 0;
+ }
+ return ENXIO;
+ case LUALOAD:
+ load = data;
+ if (strrchr(load->path, '/') == NULL)
+ return ENXIO;
+
+ LIST_FOREACH(s, &lua_states, lua_next)
+ if (!strcmp(s->lua_name, load->state)) {
+ if (lua_verbose)
+ device_printf(sc->sc_dev,
+ "loading %s into state %s\n",
+ load->path, s->lua_name);
+ cred = kauth_cred_get();
+ pb = pathbuf_create(load->path);
+ if (pb == NULL)
+ return ENOMEM;
+ NDINIT(&nd, LOOKUP, FOLLOW | NOCHROOT, pb);
+ pathbuf_destroy(pb);
+ error = vn_open(&nd, FREAD, 0);
+ if (error) {
+ if (lua_verbose)
+ device_printf(sc->sc_dev,
+ "error vn_open %d\n",
+ error);
+ return error;
+ }
+ error = VOP_GETATTR(nd.ni_vp, &va,
+ kauth_cred_get());
+ if (error) {
+ VOP_UNLOCK(nd.ni_vp);
+ vn_close(nd.ni_vp, FREAD,
+ kauth_cred_get());
+ if (lua_verbose)
+ device_printf(sc->sc_dev,
+ "erro VOP_GETATTR %d\n",
+ error);
+ return error;
+ }
+ if (va.va_type != VREG) {
+ VOP_UNLOCK(nd.ni_vp);
+ vn_close(nd.ni_vp, FREAD,
+ kauth_cred_get());
+ return EINVAL;
+ }
+ ls.vp = nd.ni_vp;
+ ls.off = 0L;
+ ls.size = va.va_size;
+ VOP_UNLOCK(nd.ni_vp);
+ error = lua_load(s->K->L, lua_reader, &ls,
+ strrchr(load->path, '/') + 1);
+ vn_close(nd.ni_vp, FREAD, cred);
+ switch (error) {
+ case 0: /* no error */
+ break;
+ case LUA_ERRSYNTAX:
+ if (lua_verbose)
+ device_printf(sc->sc_dev,
+ "syntax error\n");
+ return EINVAL;
+ case LUA_ERRMEM:
+ if (lua_verbose)
+ device_printf(sc->sc_dev,
+ "memory error\n");
+ return ENOMEM;
+ default:
+ if (lua_verbose)
+ device_printf(sc->sc_dev,
+ "load error %d: %s\n",
+ error,
+ lua_tostring(s->K->L, -1));
+ return EINVAL;
+ }
+ if (lua_max_instr > 0)
+ lua_sethook(s->K->L, lua_maxcount,
+ LUA_MASKCOUNT, lua_max_instr);
+ error = lua_pcall(s->K->L, 0, LUA_MULTRET, 0);
+ if (error) {
+ if (lua_verbose) {
+ device_printf(sc->sc_dev,
+ "execution error: %s\n",
+ lua_tostring(s->K->L, -1));
+ }
+ return EINVAL;
+ }
+ return 0;
+ }
+ return ENXIO;
+ }
+ return 0;
+}
+
+static int
+lua_require(lua_State *L)
+{
+ struct lua_state *s;
+ struct lua_module *m, *md;
+ const char *module;
+ char name[MAXPATHLEN];
+
+ module = lua_tostring(L, -1);
+ md = NULL;
+ LIST_FOREACH(m, &lua_modules, mod_next)
+ if (!strcmp(m->mod_name, module)) {
+ md = m;
+ break;
+ }
+
+ if (md == NULL && lua_autoload_on && strchr(module, '/') == NULL) {
+ snprintf(name, sizeof name, "lua%s", module);
+ if (lua_verbose)
+ device_printf(sc_self, "autoload %s\n", name);
+ module_autoload(name, MODULE_CLASS_LUA_BINDING);
+ LIST_FOREACH(m, &lua_modules, mod_next)
+ if (!strcmp(m->mod_name, module)) {
+ md = m;
+ break;
+ }
+ }
+
+ if (md != NULL)
+ LIST_FOREACH(s, &lua_states, lua_next)
+ if (s->K->L == L) {
+ if (lua_verbose)
+ device_printf(sc_self,
+ "require module %s\n",
+ md->mod_name);
+ md->open(L);
+ md->refcount++;
+ LIST_INSERT_HEAD(&s->lua_modules, md, mod_next);
+ return 0;
+ }
+
+ lua_pushstring(L, "module not found");
+ return lua_error(L);
+}
+
+void *
+lua_alloc(void *ud, void *ptr, size_t osize, size_t nsize)
+{
+ if (nsize == 0) {
+ if (ptr != NULL)
+ free(ptr, NULL);
+ return NULL;
+ } else
+ return realloc(ptr, nsize, ud, 0);
+}
+
+static const char *
+lua_reader(lua_State *L, void *data, size_t *size)
+{
+ struct lua_loadstate *ls;
+ static char buf[1024];
+ size_t rsiz;
+
+ ls = data;
+ if (ls->size < sizeof(buf))
+ rsiz = ls->size;
+ else
+ rsiz = sizeof(buf);
+ vn_rdwr(UIO_READ, ls->vp, buf, rsiz, ls->off, UIO_SYSSPACE,
+ 0, curlwp->l_cred, NULL, curlwp);
+ if (ls->off == 0L && lua_bytecode_on == false && buf[0] == 0x1b) {
+ *size = 0L;
+ lua_pushstring(L, "loading of bytecode is not allowed");
+ lua_error(L);
+ return NULL;
+ } else {
+ *size = rsiz;
+ ls->off += *size;
+ ls->size -= *size;
+ }
+ return buf;
+}
+
+static void
+lua_maxcount(lua_State *L, lua_Debug *d)
+{
+ lua_pushstring(L, "maximum instruction count exceeded");
+ lua_error(L);
+}
+
+int
+lua_mod_register(const char *name, int (*open)(void *))
+{
+ struct lua_module *m;
+
+ LIST_FOREACH(m, &lua_modules, mod_next)
+ if (!strcmp(m->mod_name, name))
+ return EBUSY;
+ m = malloc(sizeof(struct lua_module), NULL, M_ZERO);
+ if (m == NULL)
+ return ENOMEM;
+ strlcpy(m->mod_name, name, LUA_MAX_MODNAME);
+ m->open = open;
+ m->refcount = 0;
+ LIST_INSERT_HEAD(&lua_modules, m, mod_next);
+ if (lua_verbose)
+ device_printf(sc_self, "registered lua module %s\n", name);
+ return 0;
+}
+
+int
+lua_mod_unregister(const char *name)
+{
+ struct lua_module *m;
+
+ LIST_FOREACH(m, &lua_modules, mod_next)
+ if (!strcmp(m->mod_name, name)) {
+ if (m->refcount == 0) {
+ LIST_REMOVE(m, mod_next);
+ free(m, NULL);
+ if (lua_verbose)
+ device_printf(sc_self,
+ "unregistered lua module %s\n",
+ name);
+ return 0;
+ } else
+ return EBUSY;
+ }
+ return 0;
+}
+
+klua_State *
+klua_newstate(lua_Alloc f, void *ud, const char *name, const char *desc)
+{
+ klua_State *K;
+ struct lua_state *s;
+ struct lua_softc *sc;
+ int error;
+
+ s = malloc(sizeof(struct lua_state), NULL, M_ZERO);
+ if (s == NULL)
+ return NULL;
+
+ sc = device_private(sc_self);
+ mutex_enter(&sc->sc_state_lock);
+ while (sc->sc_state == true) {
+ error = cv_wait_sig(&sc->sc_state_cv, &sc->sc_state_lock);
+ if (error)
+ break;
+ }
+ if (!error)
+ sc->sc_state = true;
+ mutex_exit(&sc->sc_state_lock);
+
+ if (error)
+ return NULL;
+
+ K = malloc(sizeof(klua_State), NULL, M_ZERO);
+ if (K == NULL)
+ goto finish;
+ K->L = lua_newstate(f, ud);
+ K->ks_user = false;
+ if (K->L == NULL) {
+ free(K, NULL);
+ K = NULL;
+ goto finish;
+ }
+
+ strlcpy(s->lua_name, name, MAX_LUA_NAME);
+ strlcpy(s->lua_desc, desc, MAX_LUA_DESC);
+ s->K = K;
+
+ if (lua_require_on || lua_autoload_on) {
+ lua_pushcfunction(K->L, lua_require);
+ lua_setglobal(K->L, "require");
+ }
+ LIST_INSERT_HEAD(&lua_states, s, lua_next);
+
+ mutex_init(&K->ks_lock, MUTEX_DEFAULT, IPL_VM);
+ cv_init(&K->ks_inuse_cv, "luainuse");
+
+finish:
+ mutex_enter(&sc->sc_state_lock);
+ sc->sc_state = false;
+ cv_signal(&sc->sc_state_cv);
+ mutex_exit(&sc->sc_state_lock);
+ return K;
+}
+
+void
+klua_close(klua_State *K)
+{
+ struct lua_state *s;
+ struct lua_softc *sc;
+ struct lua_module *m;
+ int error;
+
+ /* Notify the Lua state that it is about to be closed */
+ if (klua_lock(K))
+ return; /* Nothing we can do about */
+
+ lua_getglobal(K->L, "onClose");
+ if (lua_isfunction(K->L, -1))
+ lua_pcall(K->L, -1, 0, 0);
+
+ /*
+ * Don't unlock, make sure no one uses the state until it is destroyed
+ * klua_unlock(K);
+ */
+
+ sc = device_private(sc_self);
+ mutex_enter(&sc->sc_state_lock);
+ while (sc->sc_state == true) {
+ error = cv_wait_sig(&sc->sc_state_cv, &sc->sc_state_lock);
+ if (error)
+ break;
+ }
+ if (!error)
+ sc->sc_state = true;
+ mutex_exit(&sc->sc_state_lock);
+
+ if (error)
+ return; /* Nothing we can do... */
+
+ LIST_FOREACH(s, &lua_states, lua_next)
+ if (s->K == K) {
+ LIST_REMOVE(s, lua_next);
+ LIST_FOREACH(m, &s->lua_modules, mod_next)
+ m->refcount--;
+ free(s, NULL);
+ }
+
+ lua_close(K->L);
+ cv_destroy(&K->ks_inuse_cv);
+ mutex_destroy(&K->ks_lock);
+ free(K, NULL);
+
+ mutex_enter(&sc->sc_state_lock);
+ sc->sc_state = false;
+ cv_signal(&sc->sc_state_cv);
+ mutex_exit(&sc->sc_state_lock);
+}
+
+static klua_State *
+klua_find(const char *name)
+{
+ struct lua_state *s;
+ struct lua_softc *sc;
+ klua_State *K;
+ int error;
+
+ K = NULL;
+ sc = device_private(sc_self);
+ mutex_enter(&sc->sc_state_lock);
+ while (sc->sc_state == true) {
+ error = cv_wait_sig(&sc->sc_state_cv, &sc->sc_state_lock);
+ if (error)
+ break;
+ }
+ if (!error)
+ sc->sc_state = true;
+ mutex_exit(&sc->sc_state_lock);
+
+ if (error)
+ return NULL;
+
+ LIST_FOREACH(s, &lua_states, lua_next)
+ if (!strcmp(s->lua_name, name)) {
+ K = s->K;
+ break;
+ }
+
+ mutex_enter(&sc->sc_state_lock);
+ sc->sc_state = false;
+ cv_signal(&sc->sc_state_cv);
+ mutex_exit(&sc->sc_state_lock);
+ return K;
+}
+
+int
+klua_lock(klua_State *K)
+{
+ int error;
+
+ error = 0;
+ mutex_enter(&K->ks_lock);
+ while (K->ks_inuse == true) {
+ error = cv_wait_sig(&K->ks_inuse_cv, &K->ks_lock);
+ if (error)
+ break;
+ }
+ if (!error)
+ K->ks_inuse = true;
+ mutex_exit(&K->ks_lock);
+
+ if (error)
+ return error;
+ return 0;
+}
+
+void
+klua_unlock(klua_State *K)
+{
+ mutex_enter(&K->ks_lock);
+ K->ks_inuse = false;
+ cv_signal(&K->ks_inuse_cv);
+ mutex_exit(&K->ks_lock);
+}
+
+MODULE(MODULE_CLASS_MISC, lua, NULL);
+
+#ifdef _MODULE
+static const struct cfiattrdata luabus_iattrdata = {
+ "luabus", 0, { { NULL, NULL, 0 },}
+};
+static const struct cfiattrdata *const lua_attrs[] = {
+ &luabus_iattrdata, NULL
+};
+CFDRIVER_DECL(lua, DV_DULL, lua_attrs);
+extern struct cfattach lua_ca;
+static int lualoc[] = {
+ -1,
+ -1,
+ -1
+};
+static struct cfdata lua_cfdata[] = {
+ {
+ .cf_name = "lua",
+ .cf_atname = "lua",
+ .cf_unit = 0,
+ .cf_fstate = FSTATE_STAR,
+ .cf_loc = lualoc,
+ .cf_flags = 0,
+ .cf_pspec = NULL,
+ },
+ { NULL, NULL, 0, FSTATE_NOTFOUND, NULL, 0, NULL }
+};
+#endif
+
+static int
+lua_modcmd(modcmd_t cmd, void *opaque)
+{
+#ifdef _MODULE
+ devmajor_t cmajor, bmajor;
+ int error = 0;
+
+ cmajor = bmajor = NODEVMAJOR;
+#endif
+ switch (cmd) {
+ case MODULE_CMD_INIT:
+#ifdef _MODULE
+ error = config_cfdriver_attach(&lua_cd);
+ if (error)
+ return error;
+
+ error = config_cfattach_attach(lua_cd.cd_name,
+ &lua_ca);
+ if (error) {
+ config_cfdriver_detach(&lua_cd);
+ aprint_error("%s: unable to register cfattach\n",
+ lua_cd.cd_name);
+ return error;
+ }
+ error = config_cfdata_attach(lua_cfdata, 1);
+ if (error) {
+ config_cfattach_detach(lua_cd.cd_name,
+ &lua_ca);
+ config_cfdriver_detach(&lua_cd);
+ aprint_error("%s: unable to register cfdata\n",
+ lua_cd.cd_name);
+ return error;
+ }
+ error = devsw_attach(lua_cd.cd_name, NULL, &bmajor,
+ &lua_cdevsw, &cmajor);
+ if (error) {
+ aprint_error("%s: unable to register devsw\n",
+ lua_cd.cd_name);
+ config_cfattach_detach(lua_cd.cd_name, &lua_ca);
+ config_cfdriver_detach(&lua_cd);
+ return error;
+ }
+ config_attach_pseudo(lua_cfdata);
+#endif
+ return 0;
+ case MODULE_CMD_FINI:
+#ifdef _MODULE
+ error = config_cfdata_detach(lua_cfdata);
+ if (error)
+ return error;
+
+ config_cfattach_detach(lua_cd.cd_name, &lua_ca);
+ config_cfdriver_detach(&lua_cd);
+ devsw_detach(NULL, &lua_cdevsw);
+#endif
+ return 0;
+ case MODULE_CMD_AUTOUNLOAD:
+ /* no auto-unload */
+ return EBUSY;
+ default:
+ return ENOTTY;
+ }
+}
diff --git a/sys/modules/lua/luaconf.h b/sys/modules/lua/luaconf.h
new file mode 100644
index 00000000000..c5655a37f5a
--- /dev/null
+++ b/sys/modules/lua/luaconf.h
@@ -0,0 +1,791 @@
+/*
+** $Id: luaconf.h,v 1.1 2013/10/16 19:44:57 mbalmer Exp $
+** Configuration file for Lua
+** See Copyright Notice in lua.h
+*/
+
+
+#ifndef lconfig_h
+#define lconfig_h
+
+#include <limits.h>
+#include <stddef.h>
+
+#ifndef LUA_CORE
+#define LUA_CORE
+#endif
+
+/*
+** ==================================================================
+** Search for "@@" to find all configurable definitions.
+** ===================================================================
+*/
+
+
+/*
+@@ lUA_ANSI controls the use of non-ansi features.
+** CHANGE it (define it) if you want Lua to avoid the use of any
+** non-ansi feature or library.
+*/
+#if defined(__STRICT_ANSI__)
+#define LUA_ANSI
+#endif
+
+
+#if !defined(LUA_ANSI) && defined(_WIN32)
+#define LUA_WIN
+#endif
+
+#if defined(LUA_USE_LINUX)
+#define LUA_USE_POSIX
+#define LUA_USE_DLOPEN /* needs an extra library: -ldl */
+#define LUA_USE_READLINE /* needs some extra libraries */
+#endif
+
+#if defined(LUA_USE_MACOSX)
+#define LUA_USE_POSIX
+#define LUA_DL_DYLD /* does not need extra library */
+#endif
+
+
+
+/*
+@@ LUA_USE_POSIX includes all functionallity listed as X/Open System
+@* Interfaces Extension (XSI).
+** CHANGE it (define it) if your system is XSI compatible.
+*/
+#if defined(LUA_USE_POSIX)
+#define LUA_USE_MKSTEMP
+#define LUA_USE_ISATTY
+#define LUA_USE_POPEN
+#define LUA_USE_ULONGJMP
+#endif
+
+
+/*
+@@ LUA_PATH and LUA_CPATH are the names of the environment variables that
+@* Lua check to set its paths.
+@@ LUA_INIT is the name of the environment variable that Lua
+@* checks for initialization code.
+** CHANGE them if you want different names.
+*/
+#define LUA_PATH "LUA_PATH"
+#define LUA_CPATH "LUA_CPATH"
+#define LUA_INIT "LUA_INIT"
+
+
+/*
+@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
+@* Lua libraries.
+@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
+@* C libraries.
+** CHANGE them if your machine has a non-conventional directory
+** hierarchy or if you want to install your libraries in
+** non-conventional directories.
+*/
+#if defined(_WIN32)
+/*
+** In Windows, any exclamation mark ('!') in the path is replaced by the
+** path of the directory of the executable file of the current process.
+*/
+#define LUA_LDIR "!\\lua\\"
+#define LUA_CDIR "!\\"
+#define LUA_PATH_DEFAULT \
+ ".\\?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \
+ LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua"
+#define LUA_CPATH_DEFAULT \
+ ".\\?.dll;" LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll"
+
+#else
+#define LUA_ROOT "/usr/local/"
+#define LUA_LDIR LUA_ROOT "share/lua/5.1/"
+#define LUA_CDIR LUA_ROOT "lib/lua/5.1/"
+#define LUA_PATH_DEFAULT \
+ "./?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \
+ LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua"
+#define LUA_CPATH_DEFAULT \
+ "./?.so;" LUA_CDIR"?.so;" LUA_CDIR"loadall.so"
+#endif
+
+
+/*
+@@ LUA_DIRSEP is the directory separator (for submodules).
+** CHANGE it if your machine does not use "/" as the directory separator
+** and is not Windows. (On Windows Lua automatically uses "\".)
+*/
+#if defined(_WIN32)
+#define LUA_DIRSEP "\\"
+#else
+#define LUA_DIRSEP "/"
+#endif
+
+
+/*
+@@ LUA_PATHSEP is the character that separates templates in a path.
+@@ LUA_PATH_MARK is the string that marks the substitution points in a
+@* template.
+@@ LUA_EXECDIR in a Windows path is replaced by the executable's
+@* directory.
+@@ LUA_IGMARK is a mark to ignore all before it when bulding the
+@* luaopen_ function name.
+** CHANGE them if for some reason your system cannot use those
+** characters. (E.g., if one of those characters is a common character
+** in file/directory names.) Probably you do not need to change them.
+*/
+#define LUA_PATHSEP ";"
+#define LUA_PATH_MARK "?"
+#define LUA_EXECDIR "!"
+#define LUA_IGMARK "-"
+
+
+/*
+@@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.
+** CHANGE that if ptrdiff_t is not adequate on your machine. (On most
+** machines, ptrdiff_t gives a good choice between int or long.)
+*/
+#define LUA_INTEGER ptrdiff_t
+
+
+/*
+@@ LUA_API is a mark for all core API functions.
+@@ LUALIB_API is a mark for all standard library functions.
+** CHANGE them if you need to define those functions in some special way.
+** For instance, if you want to create one Windows DLL with the core and
+** the libraries, you may want to use the following definition (define
+** LUA_BUILD_AS_DLL to get it).
+*/
+#if defined(LUA_BUILD_AS_DLL)
+
+#if defined(LUA_CORE) || defined(LUA_LIB)
+#define LUA_API __declspec(dllexport)
+#else
+#define LUA_API __declspec(dllimport)
+#endif
+
+#else
+
+#define LUA_API extern
+
+#endif
+
+/* more often than not the libs go together with the core */
+#define LUALIB_API LUA_API
+
+
+/*
+@@ LUAI_FUNC is a mark for all extern functions that are not to be
+@* exported to outside modules.
+@@ LUAI_DATA is a mark for all extern (const) variables that are not to
+@* be exported to outside modules.
+** CHANGE them if you need to mark them in some special way. Elf/gcc
+** (versions 3.2 and later) mark them as "hidden" to optimize access
+** when Lua is compiled as a shared library.
+*/
+#if defined(luaall_c)
+#define LUAI_FUNC static
+#define LUAI_DATA /* empty */
+
+#elif defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
+ defined(__ELF__)
+#define LUAI_FUNC __attribute__((visibility("hidden"))) extern
+#define LUAI_DATA LUAI_FUNC
+
+#else
+#define LUAI_FUNC extern
+#define LUAI_DATA extern
+#endif
+
+
+
+/*
+@@ LUA_QL describes how error messages quote program elements.
+** CHANGE it if you want a different appearance.
+*/
+#define LUA_QL(x) "'" x "'"
+#define LUA_QS LUA_QL("%s")
+
+
+/*
+@@ LUA_IDSIZE gives the maximum size for the description of the source
+@* of a function in debug information.
+** CHANGE it if you want a different size.
+*/
+#define LUA_IDSIZE 60
+
+
+/*
+** {==================================================================
+** Stand-alone configuration
+** ===================================================================
+*/
+
+#if defined(lua_c) || defined(luaall_c)
+
+/*
+@@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that
+@* is, whether we're running lua interactively).
+** CHANGE it if you have a better definition for non-POSIX/non-Windows
+** systems.
+*/
+#if defined(LUA_USE_ISATTY)
+#include <unistd.h>
+#define lua_stdin_is_tty() isatty(0)
+#elif defined(LUA_WIN)
+#include <io.h>
+#include <stdio.h>
+#define lua_stdin_is_tty() _isatty(_fileno(stdin))
+#else
+#define lua_stdin_is_tty() 1 /* assume stdin is a tty */
+#endif
+
+
+/*
+@@ LUA_PROMPT is the default prompt used by stand-alone Lua.
+@@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua.
+** CHANGE them if you want different prompts. (You can also change the
+** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.)
+*/
+#define LUA_PROMPT "> "
+#define LUA_PROMPT2 ">> "
+
+
+/*
+@@ LUA_PROGNAME is the default name for the stand-alone Lua program.
+** CHANGE it if your stand-alone interpreter has a different name and
+** your system is not able to detect that name automatically.
+*/
+#define LUA_PROGNAME "lua"
+
+
+/*
+@@ LUA_MAXINPUT is the maximum length for an input line in the
+@* stand-alone interpreter.
+** CHANGE it if you need longer lines.
+*/
+#define LUA_MAXINPUT 512
+
+
+/*
+@@ lua_readline defines how to show a prompt and then read a line from
+@* the standard input.
+@@ lua_saveline defines how to "save" a read line in a "history".
+@@ lua_freeline defines how to free a line read by lua_readline.
+** CHANGE them if you want to improve this functionality (e.g., by using
+** GNU readline and history facilities).
+*/
+#if defined(LUA_USE_READLINE)
+#include <stdio.h>
+#include <readline/readline.h>
+#include <readline/history.h>
+#define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL)
+#define lua_saveline(L,idx) \
+ if (lua_strlen(L,idx) > 0) /* non-empty line? */ \
+ add_history(lua_tostring(L, idx)); /* add it to history */
+#define lua_freeline(L,b) ((void)L, free(b))
+#else
+#define lua_readline(L,b,p) \
+ ((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \
+ fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */
+#define lua_saveline(L,idx) { (void)L; (void)idx; }
+#define lua_freeline(L,b) { (void)L; (void)b; }
+#endif
+
+#endif
+
+/* }================================================================== */
+
+
+/*
+@@ LUAI_GCPAUSE defines the default pause between garbage-collector cycles
+@* as a percentage.
+** CHANGE it if you want the GC to run faster or slower (higher values
+** mean larger pauses which mean slower collection.) You can also change
+** this value dynamically.
+*/
+#define LUAI_GCPAUSE 200 /* 200% (wait memory to double before next GC) */
+
+
+/*
+@@ LUAI_GCMUL defines the default speed of garbage collection relative to
+@* memory allocation as a percentage.
+** CHANGE it if you want to change the granularity of the garbage
+** collection. (Higher values mean coarser collections. 0 represents
+** infinity, where each step performs a full collection.) You can also
+** change this value dynamically.
+*/
+#define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */
+
+
+
+/*
+@@ LUA_COMPAT_GETN controls compatibility with old getn behavior.
+** CHANGE it (define it) if you want exact compatibility with the
+** behavior of setn/getn in Lua 5.0.
+*/
+#undef LUA_COMPAT_GETN
+
+/*
+@@ LUA_COMPAT_LOADLIB controls compatibility about global loadlib.
+** CHANGE it to undefined as soon as you do not need a global 'loadlib'
+** function (the function is still available as 'package.loadlib').
+*/
+#undef LUA_COMPAT_LOADLIB
+
+/*
+@@ LUA_COMPAT_VARARG controls compatibility with old vararg feature.
+** CHANGE it to undefined as soon as your programs use only '...' to
+** access vararg parameters (instead of the old 'arg' table).
+*/
+#define LUA_COMPAT_VARARG
+
+/*
+@@ LUA_COMPAT_MOD controls compatibility with old math.mod function.
+** CHANGE it to undefined as soon as your programs use 'math.fmod' or
+** the new '%' operator instead of 'math.mod'.
+*/
+#define LUA_COMPAT_MOD
+
+/*
+@@ LUA_COMPAT_LSTR controls compatibility with old long string nesting
+@* facility.
+** CHANGE it to 2 if you want the old behaviour, or undefine it to turn
+** off the advisory error when nesting [[...]].
+*/
+#define LUA_COMPAT_LSTR 1
+
+/*
+@@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name.
+** CHANGE it to undefined as soon as you rename 'string.gfind' to
+** 'string.gmatch'.
+*/
+#define LUA_COMPAT_GFIND
+
+/*
+@@ LUA_COMPAT_OPENLIB controls compatibility with old 'luaL_openlib'
+@* behavior.
+** CHANGE it to undefined as soon as you replace to 'luaL_register'
+** your uses of 'luaL_openlib'
+*/
+#define LUA_COMPAT_OPENLIB
+
+
+
+/*
+@@ luai_apicheck is the assert macro used by the Lua-C API.
+** CHANGE luai_apicheck if you want Lua to perform some checks in the
+** parameters it gets from API calls. This may slow down the interpreter
+** a bit, but may be quite useful when debugging C code that interfaces
+** with Lua. A useful redefinition is to use assert.h.
+*/
+#if defined(LUA_USE_APICHECK)
+#include <assert.h>
+#define luai_apicheck(L,o) { (void)L; assert(o); }
+#else
+#define luai_apicheck(L,o) { (void)L; }
+#endif
+
+
+/*
+@@ LUAI_BITSINT defines the number of bits in an int.
+** CHANGE here if Lua cannot automatically detect the number of bits of
+** your machine. Probably you do not need to change this.
+*/
+/* avoid overflows in comparison */
+#if INT_MAX-20 < 32760
+#define LUAI_BITSINT 16
+#elif INT_MAX > 2147483640L
+/* int has at least 32 bits */
+#define LUAI_BITSINT 32
+#else
+#error "you must define LUA_BITSINT with number of bits in an integer"
+#endif
+
+
+/*
+@@ LUAI_UINT32 is an unsigned integer with at least 32 bits.
+@@ LUAI_INT32 is an signed integer with at least 32 bits.
+@@ LUAI_UMEM is an unsigned integer big enough to count the total
+@* memory used by Lua.
+@@ LUAI_MEM is a signed integer big enough to count the total memory
+@* used by Lua.
+** CHANGE here if for some weird reason the default definitions are not
+** good enough for your machine. (The definitions in the 'else'
+** part always works, but may waste space on machines with 64-bit
+** longs.) Probably you do not need to change this.
+*/
+#if LUAI_BITSINT >= 32
+#define LUAI_UINT32 unsigned int
+#define LUAI_INT32 int
+#define LUAI_MAXINT32 INT_MAX
+#define LUAI_UMEM size_t
+#define LUAI_MEM ptrdiff_t
+#else
+/* 16-bit ints */
+#define LUAI_UINT32 unsigned long
+#define LUAI_INT32 long
+#define LUAI_MAXINT32 LONG_MAX
+#define LUAI_UMEM unsigned long
+#define LUAI_MEM long
+#endif
+
+
+/*
+@@ LUAI_MAXCALLS limits the number of nested calls.
+** CHANGE it if you need really deep recursive calls. This limit is
+** arbitrary; its only purpose is to stop infinite recursion before
+** exhausting memory.
+*/
+#define LUAI_MAXCALLS 20000
+
+
+/*
+@@ LUAI_MAXCSTACK limits the number of Lua stack slots that a C function
+@* can use.
+** CHANGE it if you need lots of (Lua) stack space for your C
+** functions. This limit is arbitrary; its only purpose is to stop C
+** functions to consume unlimited stack space. (must be smaller than
+** -LUA_REGISTRYINDEX)
+*/
+#define LUAI_MAXCSTACK 8000
+
+
+
+/*
+** {==================================================================
+** CHANGE (to smaller values) the following definitions if your system
+** has a small C stack. (Or you may want to change them to larger
+** values if your system has a large C stack and these limits are
+** too rigid for you.) Some of these constants control the size of
+** stack-allocated arrays used by the compiler or the interpreter, while
+** others limit the maximum number of recursive calls that the compiler
+** or the interpreter can perform. Values too large may cause a C stack
+** overflow for some forms of deep constructs.
+** ===================================================================
+*/
+
+
+/*
+@@ LUAI_MAXCCALLS is the maximum depth for nested C calls (short) and
+@* syntactical nested non-terminals in a program.
+*/
+#define LUAI_MAXCCALLS 200
+
+
+/*
+@@ LUAI_MAXVARS is the maximum number of local variables per function
+@* (must be smaller than 250).
+*/
+#define LUAI_MAXVARS 200
+
+
+/*
+@@ LUAI_MAXUPVALUES is the maximum number of upvalues per function
+@* (must be smaller than 250).
+*/
+#define LUAI_MAXUPVALUES 60
+
+
+/*
+@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
+*/
+#define LUAL_BUFFERSIZE BUFSIZ
+
+/* }================================================================== */
+
+
+
+
+/*
+** {==================================================================
+@@ LUA_NUMBER is the type of numbers in Lua.
+** CHANGE the following definitions only if you want to build Lua
+** with a number type different from double. You may also need to
+** change lua_number2int & lua_number2integer.
+** ===================================================================
+*/
+
+#ifdef _KERNEL
+#define LUA_NUMBER long long
+
+#else
+#define LUA_NUMBER_DOUBLE
+#define LUA_NUMBER double
+#endif
+
+/*
+@@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
+@* over a number.
+*/
+
+#define LUAI_UACNUMBER LUA_NUMBER
+
+/*
+@@ LUA_NUMBER_SCAN is the format for reading numbers.
+@@ LUA_NUMBER_FMT is the format for writing numbers.
+@@ lua_number2str converts a number to a string.
+@@ LUAI_MAXNUMBER2STR is maximum size of previous conversion.
+@@ lua_str2number converts a string to a number.
+*/
+
+#ifdef _KERNEL
+#define LUA_NUMBER_SCAN "%lld"
+#define LUA_NUMBER_FMT "%lld"
+#define lua_str2number(s,p) strtoll((s), (p), 10)
+#else
+#define LUA_NUMBER_SCAN "%lf"
+#define LUA_NUMBER_FMT "%.14g"
+#define lua_str2number(s,p) strtod((s), (p))
+#endif
+
+#define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n))
+#define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */
+
+/*
+@@ The luai_num* macros define the primitive operations over numbers.
+*/
+#if defined(LUA_CORE)
+#ifdef _KERNEL
+#define luai_nummod(a,b) ((a)%(b))
+#define luai_numpow(a,b) luai_nummul(a,b)
+#else
+#include <math.h>
+#define luai_nummod(a,b) ((a) - floor((a)/(b))*(b))
+#define luai_numpow(a,b) (pow(a,b))
+#endif
+
+#define luai_numadd(a,b) ((a)+(b))
+#define luai_numsub(a,b) ((a)-(b))
+#define luai_nummul(a,b) ((a)*(b))
+#define luai_numdiv(a,b) ((a)/(b))
+#define luai_numunm(a) (-(a))
+#define luai_numeq(a,b) ((a)==(b))
+#define luai_numlt(a,b) ((a)<(b))
+#define luai_numle(a,b) ((a)<=(b))
+#define luai_numisnan(a) (!luai_numeq((a), (a)))
+#endif
+
+
+/*
+@@ lua_number2int is a macro to convert lua_Number to int.
+@@ lua_number2integer is a macro to convert lua_Number to lua_Integer.
+** CHANGE them if you know a faster way to convert a lua_Number to
+** int (with any rounding method and without throwing errors) in your
+** system. In Pentium machines, a naive typecast from double to int
+** in C is extremely slow, so any alternative is worth trying.
+*/
+
+/* On a Pentium, resort to a trick */
+#if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \
+ (defined(__i386) || defined (_M_IX86) || defined(__i386__))
+
+/* On a Microsoft compiler, use assembler */
+#if defined(_MSC_VER)
+
+#define lua_number2int(i,d) __asm fld d __asm fistp i
+#define lua_number2integer(i,n) lua_number2int(i, n)
+
+/* the next trick should work on any Pentium, but sometimes clashes
+ with a DirectX idiosyncrasy */
+#else
+
+union luai_Cast { double l_d; long l_l; };
+#define lua_number2int(i,d) \
+ { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; }
+#define lua_number2integer(i,n) lua_number2int(i, n)
+
+#endif
+
+
+/* this option always works, but may be slow */
+#else
+#define lua_number2int(i,d) ((i)=(int)(d))
+#define lua_number2integer(i,d) ((i)=(lua_Integer)(d))
+
+#endif
+
+/* }================================================================== */
+
+
+/*
+@@ LUAI_USER_ALIGNMENT_T is a type that requires maximum alignment.
+** CHANGE it if your system requires alignments larger than double. (For
+** instance, if your system supports long doubles and they must be
+** aligned in 16-byte boundaries, then you should add long double in the
+** union.) Probably you do not need to change this.
+*/
+#define LUAI_USER_ALIGNMENT_T union { double u; void *s; long l; }
+
+
+/*
+@@ LUAI_THROW/LUAI_TRY define how Lua does exception handling.
+** CHANGE them if you prefer to use longjmp/setjmp even with C++
+** or if want/don't to use _longjmp/_setjmp instead of regular
+** longjmp/setjmp. By default, Lua handles errors with exceptions when
+** compiling as C++ code, with _longjmp/_setjmp when asked to use them,
+** and with longjmp/setjmp otherwise.
+*/
+#ifdef _KERNEL
+/* in NetBSD kernel */
+#define LUAI_THROW(L,c) longjmp(& ((c)->b))
+#define LUAI_TRY(L,c,a) if (setjmp(& ((c)->b)) == 0) { a }
+//#define LUAI_TRY(L,c,a) setjmp(& ((c)->b))
+#define luai_jmpbuf label_t
+
+#elif defined(__cplusplus)
+/* C++ exceptions */
+#define LUAI_THROW(L,c) throw(c)
+#define LUAI_TRY(L,c,a) try { a } catch(...) \
+ { if ((c)->status == 0) (c)->status = -1; }
+#define luai_jmpbuf int /* dummy variable */
+
+#elif defined(LUA_USE_ULONGJMP)
+/* in Unix, try _longjmp/_setjmp (more efficient) */
+#define LUAI_THROW(L,c) _longjmp((c)->b, 1)
+#define LUAI_TRY(L,c,a) if (_setjmp((c)->b) == 0) { a }
+#define luai_jmpbuf jmp_buf
+
+#else
+/* default handling with long jumps */
+#define LUAI_THROW(L,c) longjmp((c)->b, 1)
+#define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a }
+#define luai_jmpbuf jmp_buf
+
+#endif
+
+
+/*
+@@ LUA_MAXCAPTURES is the maximum number of captures that a pattern
+@* can do during pattern-matching.
+** CHANGE it if you need more captures. This limit is arbitrary.
+*/
+#define LUA_MAXCAPTURES 32
+
+
+/*
+@@ lua_tmpnam is the function that the OS library uses to create a
+@* temporary name.
+@@ LUA_TMPNAMBUFSIZE is the maximum size of a name created by lua_tmpnam.
+** CHANGE them if you have an alternative to tmpnam (which is considered
+** insecure) or if you want the original tmpnam anyway. By default, Lua
+** uses tmpnam except when POSIX is available, where it uses mkstemp.
+*/
+#if defined(loslib_c) || defined(luaall_c)
+
+#if defined(LUA_USE_MKSTEMP)
+#include <unistd.h>
+#define LUA_TMPNAMBUFSIZE 32
+#define lua_tmpnam(b,e) { \
+ strcpy(b, "/tmp/lua_XXXXXX"); \
+ e = mkstemp(b); \
+ if (e != -1) close(e); \
+ e = (e == -1); }
+
+#else
+#define LUA_TMPNAMBUFSIZE L_tmpnam
+#define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); }
+#endif
+
+#endif
+
+
+/*
+@@ lua_popen spawns a new process connected to the current one through
+@* the file streams.
+** CHANGE it if you have a way to implement it in your system.
+*/
+#if defined(LUA_USE_POPEN)
+
+#define lua_popen(L,c,m) ((void)L, fflush(NULL), popen(c,m))
+#define lua_pclose(L,file) ((void)L, (pclose(file) != -1))
+
+#elif defined(LUA_WIN)
+
+#define lua_popen(L,c,m) ((void)L, _popen(c,m))
+#define lua_pclose(L,file) ((void)L, (_pclose(file) != -1))
+
+#else
+
+#define lua_popen(L,c,m) ((void)((void)c, m), \
+ luaL_error(L, LUA_QL("popen") " not supported"), (FILE*)0)
+#define lua_pclose(L,file) ((void)((void)L, file), 0)
+
+#endif
+
+/*
+@@ LUA_DL_* define which dynamic-library system Lua should use.
+** CHANGE here if Lua has problems choosing the appropriate
+** dynamic-library system for your platform (either Windows' DLL, Mac's
+** dyld, or Unix's dlopen). If your system is some kind of Unix, there
+** is a good chance that it has dlopen, so LUA_DL_DLOPEN will work for
+** it. To use dlopen you also need to adapt the src/Makefile (probably
+** adding -ldl to the linker options), so Lua does not select it
+** automatically. (When you change the makefile to add -ldl, you must
+** also add -DLUA_USE_DLOPEN.)
+** If you do not want any kind of dynamic library, undefine all these
+** options.
+** By default, _WIN32 gets LUA_DL_DLL and MAC OS X gets LUA_DL_DYLD.
+*/
+#if defined(LUA_USE_DLOPEN)
+#define LUA_DL_DLOPEN
+#endif
+
+#if defined(LUA_WIN)
+#define LUA_DL_DLL
+#endif
+
+
+/*
+@@ LUAI_EXTRASPACE allows you to add user-specific data in a lua_State
+@* (the data goes just *before* the lua_State pointer).
+** CHANGE (define) this if you really need that. This value must be
+** a multiple of the maximum alignment required for your machine.
+*/
+#define LUAI_EXTRASPACE 0
+
+
+/*
+@@ luai_userstate* allow user-specific actions on threads.
+** CHANGE them if you defined LUAI_EXTRASPACE and need to do something
+** extra when a thread is created/deleted/resumed/yielded.
+*/
+#define luai_userstateopen(L) ((void)L)
+#define luai_userstateclose(L) ((void)L)
+#define luai_userstatethread(L,L1) ((void)L)
+#define luai_userstatefree(L) ((void)L)
+#define luai_userstateresume(L,n) ((void)L)
+#define luai_userstateyield(L,n) ((void)L)
+
+
+/*
+@@ LUA_INTFRMLEN is the length modifier for integer conversions
+@* in 'string.format'.
+@@ LUA_INTFRM_T is the integer type correspoding to the previous length
+@* modifier.
+** CHANGE them if your system supports long long or does not support long.
+*/
+
+#if defined(LUA_USELONGLONG)
+
+#define LUA_INTFRMLEN "ll"
+#define LUA_INTFRM_T long long
+
+#else
+
+#define LUA_INTFRMLEN "l"
+#define LUA_INTFRM_T long
+
+#endif
+
+
+
+/* =================================================================== */
+
+/*
+** Local configuration. You can use this space to add your redefinitions
+** without modifying the main part of the file.
+*/
+
+
+
+#endif
+#undef LUA_CORE
diff --git a/sys/modules/lua/luavar.h b/sys/modules/lua/luavar.h
new file mode 100644
index 00000000000..a63500b6e41
--- /dev/null
+++ b/sys/modules/lua/luavar.h
@@ -0,0 +1,49 @@
+/* $NetBSD: luavar.h,v 1.1 2013/10/16 19:44:57 mbalmer Exp $ */
+
+/*
+ * Copyright (c) 2011, Marc Balmer <mbalmer@NetBSD.org>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the Author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _LUA_VAR_
+#define _LUA_VAR_
+
+struct lua_module {
+ char mod_name[LUA_MAX_MODNAME];
+ int (*open)(void *);
+ int refcount;
+ LIST_ENTRY(lua_module) mod_next;
+};
+
+struct lua_state {
+ char lua_name[MAX_LUA_NAME];
+ char lua_desc[MAX_LUA_DESC];
+ klua_State *K;
+ LIST_HEAD(, lua_module) lua_modules;
+ LIST_ENTRY(lua_state) lua_next;
+};
+
+#endif /* _LUA_VAR_ */
diff --git a/sys/modules/lua/math.h b/sys/modules/lua/math.h
new file mode 100644
index 00000000000..5d079ed3467
--- /dev/null
+++ b/sys/modules/lua/math.h
@@ -0,0 +1,6 @@
+/* $NetBSD */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
diff --git a/sys/modules/lua/setjmp.h b/sys/modules/lua/setjmp.h
new file mode 100644
index 00000000000..3870f09efca
--- /dev/null
+++ b/sys/modules/lua/setjmp.h
@@ -0,0 +1,10 @@
+/* $NetBSD */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
+
+#include <machine/types.h>
+#include <sys/systm.h>
+
diff --git a/sys/modules/lua/signal.h b/sys/modules/lua/signal.h
new file mode 100644
index 00000000000..5d079ed3467
--- /dev/null
+++ b/sys/modules/lua/signal.h
@@ -0,0 +1,6 @@
+/* $NetBSD */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
diff --git a/sys/modules/lua/stdarg.h b/sys/modules/lua/stdarg.h
new file mode 100644
index 00000000000..bde63f352e6
--- /dev/null
+++ b/sys/modules/lua/stdarg.h
@@ -0,0 +1,8 @@
+/* $NetBSD */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
+
+#include <sys/stdarg.h>
diff --git a/sys/modules/lua/stddef.h b/sys/modules/lua/stddef.h
new file mode 100644
index 00000000000..bb27b58f852
--- /dev/null
+++ b/sys/modules/lua/stddef.h
@@ -0,0 +1,16 @@
+/* $NetBSD */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
+
+#include <sys/types.h>
+
+#ifdef _BSD_PTRDIFF_T_
+typedef _BSD_PTRDIFF_T_ ptrdiff_t;
+#undef _BSD_PTRDIFF_T_
+#endif
+
+#include <sys/null.h>
+
diff --git a/sys/modules/lua/stdio.h b/sys/modules/lua/stdio.h
new file mode 100644
index 00000000000..218aae482e6
--- /dev/null
+++ b/sys/modules/lua/stdio.h
@@ -0,0 +1,49 @@
+/* $NetBSD */
+/*
+ * Copyright (c) 2011, Lourival Neto <lneto@NetBSD.org>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the Author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
+
+#include <sys/param.h>
+
+#ifndef _LUA_INCLUDE_STDIO
+#define _LUA_INCLUDE_STDIO
+
+#define fprintf(output, ...) printf(__VA_ARGS__)
+
+#define BUFSIZ (1024)
+
+#define putchar(c) printf("%c", c)
+
+#define fputs(s, f) printf(s)
+
+#endif
+
diff --git a/sys/modules/lua/stdlib.h b/sys/modules/lua/stdlib.h
new file mode 100644
index 00000000000..b67b5419878
--- /dev/null
+++ b/sys/modules/lua/stdlib.h
@@ -0,0 +1,48 @@
+/* $NetBSD */
+
+/*
+ * Copyright (c) 2011, Lourival Neto <lneto@NetBSD.org>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the Author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
+
+#include <sys/param.h>
+#include <sys/kmem.h>
+
+#ifndef _LUA_INCLUDE_STDLIB
+#define _LUA_INCLUDE_STDLIB
+
+#define realloc(ptr, nsize) kmem_alloc(nsize, KM_SLEEP)
+#define free(ptr) kmem_free(ptr, osize)
+
+#define exit(EXIT_FAILURE) return
+
+#endif
+
diff --git a/sys/modules/lua/string.h b/sys/modules/lua/string.h
new file mode 100644
index 00000000000..f54ade99316
--- /dev/null
+++ b/sys/modules/lua/string.h
@@ -0,0 +1,21 @@
+/* $NetBSD */
+
+/*
+ * This file is a placeholder only, to allow Lua to be compiled from
+ * unchanged sources.
+ */
+
+#include <sys/param.h>
+
+#ifndef _LUA_INCLUDE_STRING_
+#define _LUA_INCLUDE_STRING_
+
+#define strcoll strcmp
+
+char *strncat(char *dst, const char *src, size_t n);
+size_t strspn(const char *s, const char *charset);
+size_t strcspn(const char *s, const char *charset);
+char *strpbrk(const char *s, const char *charset);
+
+#endif
+
diff --git a/sys/modules/lua/test.lua b/sys/modules/lua/test.lua
new file mode 100644
index 00000000000..123dd493c87
--- /dev/null
+++ b/sys/modules/lua/test.lua
@@ -0,0 +1,8 @@
+require 'core'
+
+core.print("hello, kernel world!\n")
+
+function onClose()
+ core.print('I am about to be closed\n')
+end
+