57 #define	MSGBUF_SEQNORM(mbp, seq)	(((seq) + (mbp)->msg_seqmod) % \  argument
58     (mbp)->msg_seqmod)
59 #define	MSGBUF_SEQ_TO_POS(mbp, seq)	((seq) % (mbp)->msg_size)  argument
61 #define	MSGBUF_SEQSUB(mbp, seq1, seq2)	(MSGBUF_SEQNORM((mbp), (seq1) - (seq2)))  argument
70 void	msgbuf_addchar(struct msgbuf *mbp, int c);
71 void	msgbuf_addstr(struct msgbuf *mbp, int pri, const char *str, int filter_cr);
72 void	msgbuf_clear(struct msgbuf *mbp);
74 int	msgbuf_getbytes(struct msgbuf *mbp, char *buf, int buflen);
75 int	msgbuf_getchar(struct msgbuf *mbp);
76 int	msgbuf_getcount(struct msgbuf *mbp);
77 void	msgbuf_init(struct msgbuf *mbp, void *ptr, int size);
78 int	msgbuf_peekbytes(struct msgbuf *mbp, char *buf, int buflen,
80 void	msgbuf_reinit(struct msgbuf *mbp, void *ptr, int size);