char *format_timespan(char *buf, size_t l, usec_t t);
int make_stdio(int fd);
+int make_null_stdio(void);
bool is_clean_exit(int code, int status);
bool is_clean_exit_lsb(int code, int status);
DIR *xopendirat(int dirfd, const char *name);
-#define NULSTR_FOREACH(i, l) \
+void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t);
+void dual_timestamp_deserialize(const char *value, dual_timestamp *t);
+
+char *fstab_node_to_udev_node(const char *p);
+
+void filter_environ(const char *prefix);
+
+const char *default_term_for_tty(const char *tty);
+
+#define NULSTR_FOREACH(i, l) \
for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)
+#define NULSTR_FOREACH_PAIR(i, j, l) \
+ for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i))
+
const char *ioprio_class_to_string(int i);
int ioprio_class_from_string(const char *s);