-static void
-uloop_signal_fd_cb(struct uloop_fd *fd, unsigned int events)
-{
- struct signalfd_siginfo fdsi;
- struct sigaction act;
- int ret;
-
-retry:
- ret = read(fd->fd, &fdsi, sizeof(fdsi));
- if (ret < 0 && errno == EINTR)
- goto retry;
-
- if (ret != sizeof(fdsi))
- return;
-
- switch (fdsi.ssi_signo) {
- case SIGQUIT:
- case SIGINT:
- case SIGTERM:
- sigaction(fdsi.ssi_signo, NULL, &act);
- if (act.sa_handler != SIG_IGN &&
- act.sa_handler != SIG_DFL) {
- act.sa_handler(fdsi.ssi_signo);
- break;
- }
-
- /* fall through */
- default:
- uloop_handle_signal(fdsi.ssi_signo);
- break;
- }
-}
-
-static bool
-uloop_setup_signalfd(bool add)
-{
- static struct uloop_fd sfd = {
- .cb = uloop_signal_fd_cb
- };
- static sigset_t prev_mask;
- sigset_t mask;
-
- if (signal_fd < 0)
- return false;
-
- sigemptyset(&mask);
-
- if (!add) {
- uloop_fd_delete(&sfd);
- sigprocmask(SIG_BLOCK, &prev_mask, NULL);
- } else {
- sigaddset(&mask, SIGQUIT);
- sigaddset(&mask, SIGINT);
- sigaddset(&mask, SIGTERM);
- sigaddset(&mask, SIGCHLD);
- sigprocmask(SIG_BLOCK, &mask, &prev_mask);
-
- sfd.fd = signal_fd;
- uloop_fd_add(&sfd, ULOOP_READ | ULOOP_EDGE_TRIGGER);
- }
-
- if (signalfd(signal_fd, &mask, SFD_NONBLOCK | SFD_CLOEXEC) < 0) {
- sigprocmask(SIG_BLOCK, &prev_mask, NULL);
- return false;
- }
-
- return true;
-}
-