ash: treat all applets as NOEXEC

In standalone shell mode tryexec() treats all applets as NOEXEC.
Except for the shell:  calling ash_main() recursively seems unwise.

This avoids creating a new process for the applet (which is a Good
Thing on Microsoft Windows where creating processes is expensive) but
leaves the resources used by the invoking shell in the current process.

1 files changed, 3 insertions, 0 deletions

diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index b2c85905c..9caa04ac3 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -1122,6 +1122,9 @@ void FAST_FUNC run_applet_no_and_exit(int applet_no, const char *name, char **ar
 #  if defined APPLET_NO_false
          && applet_no != APPLET_NO_false
 #  endif
+#  if defined APPLET_NO_busybox
+         && applet_no != APPLET_NO_busybox
+#  endif
         ) {
                 if (argc == 2 && strcmp(argv[1], "--help") == 0) {
                         /* Make "foo --help" exit with 0: */