int flush_fd(int fd);
+int ignore_signal(int sig);
+
+int close_pipe(int p[]);
+
+ssize_t loop_read(int fd, void *buf, size_t nbytes);
+
+int path_is_mount_point(const char *path);
+
extern char * __progname;
const char *ioprio_class_to_string(int i);