hush: make it ignore SIGINT etc in a config wich has no job control

1 files changed, 13 insertions, 11 deletions

diff --git a/shell/hush.c b/shell/hush.c
index 26d113b17..9e574c90c 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -698,9 +698,18 @@ static const struct built_in_command bltins[] = {
         BLTIN(NULL, NULL, NULL)
 };
 
+/* Signals are grouped, we handle them in batches */
+static void set_misc_sighandler(void (*handler)(int))
+{
+        bb_signals(0
+                + (1 << SIGINT)
+                + (1 << SIGQUIT)
+                + (1 << SIGTERM)
+                , handler);
+}
+
 #if ENABLE_HUSH_JOB
 
-/* Signals are grouped, we handle them in batches */
 static void set_fatal_sighandler(void (*handler)(int))
 {
         bb_signals(0
@@ -724,14 +733,6 @@ static void set_jobctrl_sighandler(void (*handler)(int))
                 + (1 << SIGTTOU)
                 , handler);
 }
-static void set_misc_sighandler(void (*handler)(int))
-{
-        bb_signals(0
-                + (1 << SIGINT)
-                + (1 << SIGQUIT)
-                + (1 << SIGTERM)
-                , handler);
-}
 /* SIGCHLD is special and handled separately */
 
 static void set_every_sighandler(void (*handler)(int))
@@ -814,7 +815,6 @@ static void hush_exit(int exitcode)
 
 #define set_fatal_sighandler(handler)   ((void)0)
 #define set_jobctrl_sighandler(handler) ((void)0)
-#define set_misc_sighandler(handler)    ((void)0)
 #define hush_exit(e)                    exit(e)
 
 #endif /* JOB */
@@ -3906,8 +3906,10 @@ int hush_main(int argc, char **argv)
                                 /* give up */
                                 interactive_fd = 0;
                 }
-                if (interactive_fd)
+                if (interactive_fd) {
                         fcntl(interactive_fd, F_SETFD, FD_CLOEXEC);
+                        set_misc_sighandler(SIG_IGN);
+                }
         }
 #endif