diff --git a/libfuse-lite/fuse_signals.c b/libfuse-lite/fuse_signals.c index bf979563..d5b3d092 100644 --- a/libfuse-lite/fuse_signals.c +++ b/libfuse-lite/fuse_signals.c @@ -22,13 +22,13 @@ static void exit_handler(int sig) fuse_session_exit(fuse_instance); } -static int set_one_signal_handler(int sig, void (*handler)(int)) +static int set_one_signal_handler(int sig, void (*handler)(int), int remove) { struct sigaction sa; struct sigaction old_sa; memset(&sa, 0, sizeof(struct sigaction)); - sa.sa_handler = handler; + sa.sa_handler = remove ? SIG_DFL : handler; sigemptyset(&(sa.sa_mask)); sa.sa_flags = 0; @@ -37,7 +37,7 @@ static int set_one_signal_handler(int sig, void (*handler)(int)) return -1; } - if (old_sa.sa_handler == SIG_DFL && + if (old_sa.sa_handler == (remove ? handler : SIG_DFL) && sigaction(sig, &sa, NULL) == -1) { perror("fuse: cannot set signal handler"); return -1; @@ -47,10 +47,10 @@ static int set_one_signal_handler(int sig, void (*handler)(int)) int fuse_set_signal_handlers(struct fuse_session *se) { - if (set_one_signal_handler(SIGHUP, exit_handler) == -1 || - set_one_signal_handler(SIGINT, exit_handler) == -1 || - set_one_signal_handler(SIGTERM, exit_handler) == -1 || - set_one_signal_handler(SIGPIPE, SIG_IGN) == -1) + if (set_one_signal_handler(SIGHUP, exit_handler, 0) == -1 || + set_one_signal_handler(SIGINT, exit_handler, 0) == -1 || + set_one_signal_handler(SIGTERM, exit_handler, 0) == -1 || + set_one_signal_handler(SIGPIPE, SIG_IGN, 0) == -1) return -1; fuse_instance = se; @@ -65,9 +65,9 @@ void fuse_remove_signal_handlers(struct fuse_session *se) else fuse_instance = NULL; - set_one_signal_handler(SIGHUP, SIG_DFL); - set_one_signal_handler(SIGINT, SIG_DFL); - set_one_signal_handler(SIGTERM, SIG_DFL); - set_one_signal_handler(SIGPIPE, SIG_DFL); + set_one_signal_handler(SIGHUP, exit_handler, 1); + set_one_signal_handler(SIGINT, exit_handler, 1); + set_one_signal_handler(SIGTERM, exit_handler, 1); + set_one_signal_handler(SIGPIPE, SIG_IGN, 1); }