ftpd: prevent zombies. closes 7832

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

diff --git a/networking/ftpd.c b/networking/ftpd.c
index 6adcb1dee0cfcfdfba4890666c483e899e6917e2..0c10e1f25ddedd90b46d1331ec5493acc43521a6 100644 (file)
--- 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));