Fix use of PATH_MAX in luxio_getcwd()

1 files changed, 3 insertions, 2 deletions

diff --git a/luxio.c b/luxio.c
index 1daff3b..7ca5b87 100644
--- a/luxio.c
+++ b/luxio.c
@@ -938,9 +938,10 @@ luxio_chdir(lua_State *L) /* 5.2.1 */
 static int
 luxio_getcwd(lua_State *L) /* 5.2.2 */
 {
-	char buf[PATH_MAX];
+	size_t buflen = pathconf("/", _PC_PATH_MAX) + 256;
+	char buf[buflen];
 
-	if (getcwd(buf, PATH_MAX) == NULL) {
+	if (getcwd(buf, buflen) == NULL) {
 		lua_pushnil(L);
 	} else {
 		lua_pushstring(L, buf);