extern int linebuf_parse(buf_head_t *, char *, int, int);
extern int linebuf_get(buf_head_t *, char *, int, int, int);
extern void linebuf_putmsg(buf_head_t *, const char *, va_list *, const char *, ...);
extern int linebuf_parse(buf_head_t *, char *, int, int);
extern int linebuf_get(buf_head_t *, char *, int, int, int);
extern void linebuf_putmsg(buf_head_t *, const char *, va_list *, const char *, ...);