Fix hush to give the correct return code for a simple command
When a simple command like 'false' is provided, hush should return the
result of that command. However, hush only does this if the
FLAG_EXIT_FROM_LOOP flag is provided. Without this flag, hush will
happily execute the empty string command immediate after 'false' and
then return a success code.
This behaviour does not seem very useful, and requiring the flag also
seems wrong, since it means that hush will execute only the first command
in a sequence.
Add a check for empty string and fall out of the loop in that case. That
at least fixes the simple command case. This is a change in behaviour but
it is unlikely that the old behaviour would be considered correct in any
case.
Reported-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/cli_hush.c b/common/cli_hush.c
index 0f069b0..e0c436f 100644
--- a/common/cli_hush.c
+++ b/common/cli_hush.c
@@ -3215,7 +3215,9 @@
free_pipe_list(ctx.list_head,0);
}
b_free(&temp);
- } while (rcode != -1 && !(flag & FLAG_EXIT_FROM_LOOP)); /* loop on syntax errors, return on EOF */
+ /* loop on syntax errors, return on EOF */
+ } while (rcode != -1 && !(flag & FLAG_EXIT_FROM_LOOP) &&
+ (inp->peek != static_peek || b_peek(inp)));
#ifndef __U_BOOT__
return 0;
#else