fix

1 files changed, 72 insertions, 0 deletions

diff --git a/lib/fuse_signals.c b/lib/fuse_signals.c
new file mode 100644
index 0000000..38f407d
--- /dev/null
+++ b/lib/fuse_signals.c
@@ -0,0 +1,72 @@
+/*
+    FUSE: Filesystem in Userspace
+    Copyright (C) 2001-2006  Miklos Szeredi <miklos@szeredi.hu>
+
+    This program can be distributed under the terms of the GNU LGPL.
+    See the file COPYING.LIB
+*/
+
+#include "fuse_lowlevel.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+
+static struct fuse_session *fuse_instance;
+
+static void exit_handler(int sig)
+{
+    (void) sig;
+    if (fuse_instance)
+        fuse_session_exit(fuse_instance);
+}
+
+static int set_one_signal_handler(int sig, void (*handler)(int))
+{
+    struct sigaction sa;
+    struct sigaction old_sa;
+
+    memset(&sa, 0, sizeof(struct sigaction));
+    sa.sa_handler = handler;
+    sigemptyset(&(sa.sa_mask));
+    sa.sa_flags = 0;
+
+    if (sigaction(sig, NULL, &old_sa) == -1) {
+        perror("FUSE: cannot get old signal handler");
+        return -1;
+    }
+
+    if (old_sa.sa_handler == SIG_DFL &&
+        sigaction(sig, &sa, NULL) == -1) {
+        perror("Cannot set signal handler");
+        return -1;
+    }
+    return 0;
+}
+
+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)
+        return -1;
+
+    fuse_instance = se;
+    return 0;
+}
+
+void fuse_remove_signal_handlers(struct fuse_session *se)
+{
+    if (fuse_instance != se)
+        fprintf(stderr,
+                "fuse: fuse_remove_signal_handlers: unknown session\n");
+    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);
+}
+