diff options
| -rw-r--r-- | login-utils/su-common.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/login-utils/su-common.c b/login-utils/su-common.c index 06282d21a1..e57ff64bdb 100644 --- a/login-utils/su-common.c +++ b/login-utils/su-common.c @@ -522,6 +522,7 @@ static void parent_setup_signals(struct su_context *su) static void create_watching_parent(struct su_context *su) { + struct sigaction action; int status; DBG(MISC, ul_debug("forking...")); @@ -545,6 +546,19 @@ static void create_watching_parent(struct su_context *su) #endif fflush(stdout); /* ??? */ + /* set default handler for SIGCHLD */ + sigemptyset(&action.sa_mask); + action.sa_flags = 0; + action.sa_handler = SIG_DFL; + if (sigaction(SIGCHLD, &action, NULL)) { + supam_cleanup(su, PAM_ABORT); +#ifdef USE_PTY + if (su->force_pty) + ul_pty_cleanup(su->pty); +#endif + err(EXIT_FAILURE, _("cannot set child signal handler")); + } + switch ((int) (su->child = fork())) { case -1: /* error */ supam_cleanup(su, PAM_ABORT); |