ftpd: prevent zombies. closes 7832

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/networking/ftpd.c b/networking/ftpd.c
index 6adcb1dee..0c10e1f25 100644
--- a/networking/ftpd.c
+++ b/networking/ftpd.c
@@ -1174,8 +1174,13 @@ int ftpd_main(int argc UNUSED_PARAM, char **argv)
 
         //umask(077); - admin can set umask before starting us
 
-        /* Signals. We'll always take -EPIPE rather than a rude signal, thanks */
-        signal(SIGPIPE, SIG_IGN);
+        /* Signals */
+        bb_signals(0
+                /* We'll always take EPIPE rather than a rude signal, thanks */
+                + (1 << SIGPIPE)
+                /* LIST command spawns chilren. Prevent zombies */
+                + (1 << SIGCHLD)
+                , SIG_IGN);
 
         /* Set up options on the command socket (do we need these all? why?) */
         setsockopt(STDIN_FILENO, IPPROTO_TCP, TCP_NODELAY, &const_int_1, sizeof(const_int_1));