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welcome lua(4), a devide driver that can create and control Lua states inside the kernel

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This commit is contained in:
mbalmer 2013-10-16 19:44:57 +00:00
parent 1cdf24d00e
commit 58881ebfcd
20 changed files with 2093 additions and 0 deletions
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48
sys/modules/lua/Makefile Normal file
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# $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>

34
sys/modules/lua/assert.h Normal file
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/* $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.
*/

66
sys/modules/lua/ctype.h Normal file
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/* $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

8
sys/modules/lua/errno.h Normal file
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/* $NetBSD */
/*
* This file is a placeholder only, to allow Lua to be compiled from
* unchanged sources.
*/
#include <sys/errno.h>

2
sys/modules/lua/infinite.lua Normal file
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while (1) do end

6
sys/modules/lua/inttypes.h Normal file
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/* $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.
*/

8
sys/modules/lua/limits.h Normal file
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/* $NetBSD */
/*
* This file is a placeholder only, to allow Lua to be compiled from
* unchanged sources.
*/
#include <machine/limits.h>

47
sys/modules/lua/locale.h Normal file
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/* $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

862
sys/modules/lua/lua.c Normal file
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/* $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;
}
}

791
sys/modules/lua/luaconf.h Normal file
View File

@ -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

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@ -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_ */

6
sys/modules/lua/math.h Normal file
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@ -0,0 +1,6 @@
/* $NetBSD */
/*
* This file is a placeholder only, to allow Lua to be compiled from
* unchanged sources.
*/

10
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@ -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>

6
sys/modules/lua/signal.h Normal file
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@ -0,0 +1,6 @@
/* $NetBSD */
/*
* This file is a placeholder only, to allow Lua to be compiled from
* unchanged sources.
*/

8
sys/modules/lua/stdarg.h Normal file
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@ -0,0 +1,8 @@
/* $NetBSD */
/*
* This file is a placeholder only, to allow Lua to be compiled from
* unchanged sources.
*/
#include <sys/stdarg.h>

16
sys/modules/lua/stddef.h Normal file
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@ -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>

49
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@ -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

48
sys/modules/lua/stdlib.h Normal file
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@ -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

21
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@ -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

8
sys/modules/lua/test.lua Normal file
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@ -0,0 +1,8 @@
require 'core'
core.print("hello, kernel world!\n")
function onClose()
core.print('I am about to be closed\n')
end