3 files changed, 16 insertions, 0 deletions
diff --git a/udev/lib/libudev-monitor.c b/udev/lib/libudev-monitor.c
index d006596e07..a8b1a4e2e5 100644
--- a/udev/lib/libudev-monitor.c
+++ b/udev/lib/libudev-monitor.c
@@ -92,6 +92,8 @@ struct udev_monitor *udev_monitor_new_from_socket(struct udev *udev, const char
 		free(udev_monitor);
 		return NULL;
 	}
+	util_set_fd_cloexec(udev_monitor->sock);
+
 	dbg(udev, "monitor %p created with '%s'\n", udev_monitor, socket_path);
 	return udev_monitor;
 }
@@ -125,6 +127,7 @@ struct udev_monitor *udev_monitor_new_from_netlink(struct udev *udev, const char
 		free(udev_monitor);
 		return NULL;
 	}
+	util_set_fd_cloexec(udev_monitor->sock);
 
 	udev_monitor->snl.nl_family = AF_NETLINK;
 	udev_monitor->snl.nl_groups = group;
diff --git a/udev/lib/libudev-private.h b/udev/lib/libudev-private.h
index c7b74a4218..1e47d51080 100644
--- a/udev/lib/libudev-private.h
+++ b/udev/lib/libudev-private.h
@@ -172,4 +172,5 @@ extern size_t util_strlcat(char *dst, const char *src, size_t size);
 extern int udev_util_replace_whitespace(const char *str, char *to, size_t len);
 extern int udev_util_replace_chars(char *str, const char *white);
 extern int udev_util_encode_string(const char *str, char *str_enc, size_t len);
+extern void util_set_fd_cloexec(int fd);
 #endif
diff --git a/udev/lib/libudev-util.c b/udev/lib/libudev-util.c
index 867a41d211..b628fdd44c 100644
--- a/udev/lib/libudev-util.c
+++ b/udev/lib/libudev-util.c
@@ -448,3 +448,15 @@ int udev_util_encode_string(const char *str, char *str_enc, size_t len)
 err:
 	return -1;
 }
+
+void util_set_fd_cloexec(int fd)
+{
+	int flags;
+
+	flags = fcntl(fd, F_GETFD);
+	if (flags < 0)
+		flags = FD_CLOEXEC;
+	else
+		flags |= FD_CLOEXEC;
+	fcntl(fd, F_SETFD, flags);
+}