static int luv_new_signal(lua_State* L) {
uv_signal_t* handle = luv_newuserdata(L, sizeof(*handle));
int ret = uv_signal_init(luv_loop(L), handle);
if (ret < 0) {
lua_pop(L, 1);
return luv_error(L, ret);
}
handle->data = luv_setup_handle(L);
return 1;
}
static int luv_new_socket_poll(lua_State* L) {
int fd = luaL_checkinteger(L, 1);
uv_poll_t* handle = (uv_poll_t*)luv_newuserdata(L, sizeof(*handle));
int ret = uv_poll_init_socket(luv_loop(L), handle, fd);
if (ret < 0) {
lua_pop(L, 1);
return luv_error(L, ret);
}
handle->data = luv_setup_handle(L);
return 1;
}
static int luv_new_tty(lua_State* L) {
int readable, ret;
uv_tty_t* handle;
uv_file fd = luaL_checkinteger(L, 1);
luaL_checktype(L, 2, LUA_TBOOLEAN);
readable = lua_toboolean(L, 2);
handle = (uv_tty_t*)luv_newuserdata(L, sizeof(*handle));
ret = uv_tty_init(luv_loop(L), handle, fd, readable);
if (ret < 0) {
lua_pop(L, 1);
return luv_error(L, ret);
}
handle->data = luv_setup_handle(L);
return 1;
}
static int luv_new_udp(lua_State* L) {
uv_udp_t* handle = (uv_udp_t*)luv_newuserdata(L, sizeof(*handle));
int ret;
if (lua_isnoneornil(L, 1)) {
ret = uv_udp_init(luv_loop(L), handle);
}
else {
ret = uv_udp_init_ex(luv_loop(L), handle, lua_tointeger(L, 1));
}
if (ret < 0) {
lua_pop(L, 1);
return luv_error(L, ret);
}
handle->data = luv_setup_handle(L);
return 1;
}
static int luv_spawn(lua_State* L) {
uv_process_t* handle;
uv_process_options_t options;
size_t i, len = 0;
int ret;
memset(&options, 0, sizeof(options));
options.exit_cb = exit_cb;
options.file = luaL_checkstring(L, 1);
options.flags = 0;
// Make sure the 2nd argument is a table
luaL_checktype(L, 2, LUA_TTABLE);
// get the args list
lua_getfield(L, 2, "args");
// +1 for inserted command at front
if (lua_type(L, -1) == LUA_TTABLE) {
len = 1 + lua_rawlen(L, -1);
}
else if (lua_type(L, -1) != LUA_TNIL) {
luv_clean_options(&options);
return luaL_argerror(L, 3, "args option must be table");
}
else {
len = 1;
}
// +1 for null terminator at end
options.args = malloc((len + 1) * sizeof(*options.args));
if (!options.args) {
luv_clean_options(&options);
return luaL_error(L, "Problem allocating args");
}
options.args[0] = (char*)options.file;
for (i = 1; i < len; ++i) {
lua_rawgeti(L, -1, i);
options.args[i] = (char*)lua_tostring(L, -1);
lua_pop(L, 1);
}
options.args[len] = NULL;
lua_pop(L, 1);
// get the stdio list
lua_getfield(L, 2, "stdio");
if (lua_type(L, -1) == LUA_TTABLE) {
options.stdio_count = len = lua_rawlen(L, -1);
options.stdio = malloc(len * sizeof(*options.stdio));
if (!options.stdio) {
luv_clean_options(&options);
return luaL_error(L, "Problem allocating stdio");
}
for (i = 0; i < len; ++i) {
lua_rawgeti(L, -1, i + 1);
// integers are assumed to be file descripters
if (lua_type(L, -1) == LUA_TNUMBER) {
options.stdio[i].flags = UV_INHERIT_FD;
options.stdio[i].data.fd = lua_tointeger(L, -1);
}
// userdata is assumed to be a uv_stream_t instance
else if (lua_type(L, -1) == LUA_TUSERDATA) {
uv_os_fd_t fd;
uv_stream_t* stream = luv_check_stream(L, -1);
int err = uv_fileno((uv_handle_t*)stream, &fd);
if (err == UV_EINVAL || err == UV_EBADF) {
// stdin (fd 0) is read-only, stdout and stderr (fds 1 & 2) are
// write-only, and all fds > 2 are read-write
int flags = UV_CREATE_PIPE;
if (i == 0 || i > 2)
flags |= UV_READABLE_PIPE;
if (i != 0)
flags |= UV_WRITABLE_PIPE;
options.stdio[i].flags = flags;
}
else {
options.stdio[i].flags = UV_INHERIT_STREAM;
}
options.stdio[i].data.stream = stream;
}
else if (lua_type(L, -1) == LUA_TNIL) {
options.stdio[i].flags = UV_IGNORE;
}
else {
luv_clean_options(&options);
return luaL_argerror(L, 2, "stdio table entries must be nil, uv_stream_t, or integer");
}
lua_pop(L, 1);
}
}
else if (lua_type(L, -1) != LUA_TNIL) {
luv_clean_options(&options);
return luaL_argerror(L, 2, "stdio option must be table");
}
lua_pop(L, 1);
// Get the env
lua_getfield(L, 2, "env");
if (lua_type(L, -1) == LUA_TTABLE) {
len = lua_rawlen(L, -1);
options.env = malloc((len + 1) * sizeof(*options.env));
if (!options.env) {
luv_clean_options(&options);
return luaL_error(L, "Problem allocating env");
}
for (i = 0; i < len; ++i) {
lua_rawgeti(L, -1, i + 1);
options.env[i] = (char*)lua_tostring(L, -1);
lua_pop(L, 1);
}
options.env[len] = NULL;
}
else if (lua_type(L, -1) != LUA_TNIL) {
luv_clean_options(&options);
return luaL_argerror(L, 2, "env option must be table");
}
lua_pop(L, 1);
// Get the cwd
lua_getfield(L, 2, "cwd");
if (lua_type(L, -1) == LUA_TSTRING) {
options.cwd = (char*)lua_tostring(L, -1);
}
else if (lua_type(L, -1) != LUA_TNIL) {
luv_clean_options(&options);
return luaL_argerror(L, 2, "cwd option must be string");
}
lua_pop(L, 1);
// Check for uid
lua_getfield(L, 2, "uid");
if (lua_type(L, -1) == LUA_TNUMBER) {
options.uid = lua_tointeger(L, -1);
options.flags |= UV_PROCESS_SETUID;
}
else if (lua_type(L, -1) != LUA_TNIL) {
luv_clean_options(&options);
return luaL_argerror(L, 2, "uid option must be number");
}
lua_pop(L, 1);
// Check for gid
lua_getfield(L, 2, "gid");
if (lua_type(L, -1) == LUA_TNUMBER) {
options.gid = lua_tointeger(L, -1);
options.flags |= UV_PROCESS_SETGID;
}
else if (lua_type(L, -1) != LUA_TNIL) {
luv_clean_options(&options);
return luaL_argerror(L, 2, "gid option must be number");
}
lua_pop(L, 1);
// Check for the boolean flags
lua_getfield(L, 2, "verbatim");
if (lua_toboolean(L, -1)) {
options.flags |= UV_PROCESS_WINDOWS_VERBATIM_ARGUMENTS;
}
lua_pop(L, 1);
lua_getfield(L, 2, "detached");
if (lua_toboolean(L, -1)) {
options.flags |= UV_PROCESS_DETACHED;
}
lua_pop(L, 1);
lua_getfield(L, 2, "hide");
if (lua_toboolean(L, -1)) {
options.flags |= UV_PROCESS_WINDOWS_HIDE;
}
lua_pop(L, 1);
handle = luv_newuserdata(L, sizeof(*handle));
handle->type = UV_PROCESS;
handle->data = luv_setup_handle(L);
if (!lua_isnoneornil(L, 3)) {
luv_check_callback(L, handle->data, LUV_EXIT, 3);
}
ret = uv_spawn(luv_loop(L), handle, &options);
luv_clean_options(&options);
if (ret < 0) {
/* The async callback is required here because luajit GC may reclaim the
* luv handle before libuv is done closing it down.
*/
uv_close((uv_handle_t*)handle, luv_spawn_close_cb);
return luv_error(L, ret);
}
lua_pushinteger(L, handle->pid);
return 2;
}