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/*!A cross-platform build utility based on Lua
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright (C) 2015-present, Xmake Open Source Community.
*
* @author TitanSnow
* @file gid.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "gid"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
#ifndef TB_CONFIG_OS_WINDOWS
#include <unistd.h>
#include <errno.h>
#endif
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
#ifndef TB_CONFIG_OS_WINDOWS
// get & set gid
tb_int_t xm_os_gid(lua_State *lua) {
tb_assert_and_check_return_val(lua, 0);
tb_int_t rgidset = -1;
tb_int_t egidset = -1;
tb_int_t argc = lua_gettop(lua);
if (argc == 1) {
if (lua_istable(lua, 1)) {
// os.gid({["rgid"] = rgid, ["egid"] = egid})
lua_getfield(lua, 1, "rgid");
lua_getfield(lua, 1, "egid");
if (!lua_isnil(lua, -1)) {
if (!lua_isnumber(lua, -1)) {
lua_pushfstring(lua, "invalid field type(%s) in `egid` for os.gid", luaL_typename(lua, -1));
lua_error(lua);
return 0;
}
egidset = (tb_int_t)lua_tonumber(lua, -1);
}
lua_pop(lua, 1);
if (!lua_isnil(lua, -1)) {
if (!lua_isnumber(lua, -1)) {
lua_pushfstring(lua, "invalid field type(%s) in `rgid` for os.gid", luaL_typename(lua, -1));
lua_error(lua);
return 0;
}
rgidset = (tb_int_t)lua_tonumber(lua, -1);
}
lua_pop(lua, 1);
} else if (lua_isnumber(lua, 1)) {
// os.gid(gid)
rgidset = egidset = (tb_int_t)lua_tonumber(lua, 1);
} else {
lua_pushfstring(lua, "invalid argument type(%s) for os.gid", luaL_typename(lua, 1));
lua_error(lua);
return 0;
}
} else if (argc == 2) {
// os.gid(rgid, egid)
if (!lua_isnil(lua, 1)) {
if (!lua_isnumber(lua, 1)) {
lua_pushfstring(lua, "invalid argument type(%s) for os.gid", luaL_typename(lua, 1));
lua_error(lua);
return 0;
}
rgidset = (tb_int_t)lua_tonumber(lua, 1);
}
if (!lua_isnil(lua, 2)) {
if (!lua_isnumber(lua, 2)) {
lua_pushfstring(lua, "invalid argument type(%s) for os.gid", luaL_typename(lua, 2));
lua_error(lua);
return 0;
}
egidset = (tb_int_t)lua_tonumber(lua, 2);
}
} else if (argc != 0) {
lua_pushstring(lua, "invalid argument count for os.gid");
lua_error(lua);
return 0;
}
// store return value
lua_newtable(lua);
if (rgidset != -1 || egidset != -1) {
// set rgid & egid
lua_pushstring(lua, "errno");
lua_pushinteger(lua, setregid(rgidset, egidset) != 0 ? errno : 0);
lua_settable(lua, -3);
}
// get gid & egid
gid_t gid = getgid();
gid_t egid = getegid();
// push
lua_pushstring(lua, "rgid");
lua_pushinteger(lua, gid);
lua_settable(lua, -3);
lua_pushstring(lua, "egid");
lua_pushinteger(lua, egid);
lua_settable(lua, -3);
return 1;
}
#endif
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