void xset_nonblocking(int fd);
int set_dscp(int fd, uint8_t dscp);
void xset_nonblocking(int fd);
int set_dscp(int fd, uint8_t dscp);
int lookup_ip(const char *host_name, struct in_addr *address);
int lookup_ipv6(const char *host_name, struct in6_addr *address);
int lookup_ip(const char *host_name, struct in_addr *address);
int lookup_ipv6(const char *host_name, struct in6_addr *address);
int make_unix_socket(int style, bool nonblock,
const char *bind_path, const char *connect_path);
int get_unix_name_len(socklen_t sun_len);
int make_unix_socket(int style, bool nonblock,
const char *bind_path, const char *connect_path);
int get_unix_name_len(socklen_t sun_len);
bool inet_parse_active(const char *target, uint16_t default_port,
struct sockaddr_storage *ssp);
bool inet_parse_active(const char *target, uint16_t default_port,
struct sockaddr_storage *ssp);
int fsync_parent_dir(const char *file_name);
int get_mtime(const char *file_name, struct timespec *mtime);
int fsync_parent_dir(const char *file_name);
int get_mtime(const char *file_name, struct timespec *mtime);
/* Helpers for calling ioctl() on an AF_INET socket. */
struct ifreq;
int af_inet_ioctl(unsigned long int command, const void *arg);
int af_inet_ifreq_ioctl(const char *name, struct ifreq *,
unsigned long int cmd, const char *cmd_name);
/* Helpers for calling ioctl() on an AF_INET socket. */
struct ifreq;
int af_inet_ioctl(unsigned long int command, const void *arg);
int af_inet_ifreq_ioctl(const char *name, struct ifreq *,
unsigned long int cmd, const char *cmd_name);