D50176.id.diff
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D50176.id.diff
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	diff --git a/libexec/flua/modules/lposix.c b/libexec/flua/modules/lposix.c
	--- a/libexec/flua/modules/lposix.c
	+++ b/libexec/flua/modules/lposix.c
	@@ -165,6 +165,39 @@

	}

	+static int
	+lua_dup2(lua_State *L)
	+{
	+ int error, oldd, newd;
	+
	+ enforce_max_args(L, 2);
	+
	+ oldd = luaL_checkinteger(L, 1);
	+ if (oldd < 0) {
	+ error = EBADF;
	+ goto err;
	+ }
	+
	+ newd = luaL_checkinteger(L, 2);
	+ if (newd < 0) {
	+ error = EBADF;
	+ goto err;
	+ }
	+
	+ error = dup2(oldd, newd);
	+ if (error >= 0) {
	+ lua_pushinteger(L, error);
	+ return (1);
	+ }
	+
	+ error = errno;
	+err:
	+ lua_pushnil(L);
	+ lua_pushstring(L, strerror(error));
	+ lua_pushinteger(L, error);
	+ return (3);
	+}
	+
	static int
	lua_fnmatch(lua_State *L)
	{
	@@ -479,6 +512,7 @@
	REG_SIMPLE(_exit),
	REG_SIMPLE(chown),
	REG_DEF(close, lua_pclose),
	+ REG_SIMPLE(dup2),
	REG_SIMPLE(fork),
	REG_SIMPLE(getpid),
	REG_SIMPLE(pipe),