envdir: fix "envdir with no params" case

diff --git a/runit/chpst.c b/runit/chpst.c
index 43e8d5f3e5534e5333cc8138c4465fd8939d2c1f..82a81f5492235a15da76adb5af7c76f2425d32bc 100644 (file)
--- a/runit/chpst.c
+++ b/runit/chpst.c
@@ -213,6 +213,8 @@ int chpst_main(int argc UNUSED_PARAM, char **argv)
        } else {
                option_mask32 = opt = 0;
                argv++;
+               if (!*argv)
+                       bb_show_usage();
        }
 
        // envdir?
@@ -222,7 +224,7 @@ int chpst_main(int argc UNUSED_PARAM, char **argv)
        }
 
        // setuidgid?
-       if (ENABLE_SETUIDGID && applet_name[0] == 's') {
+       if (ENABLE_SETUIDGID && applet_name[1] == 'e') {
                set_user = *argv++;
                opt |= OPT_u;
        }