diff options
Diffstat (limited to 'sys/kern/subr_prf.c')
| -rw-r--r-- | sys/kern/subr_prf.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/sys/kern/subr_prf.c b/sys/kern/subr_prf.c index 5b6eb3fd762..0ec990f67a9 100644 --- a/sys/kern/subr_prf.c +++ b/sys/kern/subr_prf.c @@ -1,4 +1,4 @@ -/* $OpenBSD: subr_prf.c,v 1.26 1999/12/02 00:23:35 deraadt Exp $ */ +/* $OpenBSD: subr_prf.c,v 1.27 2000/02/22 19:28:04 deraadt Exp $ */ /* $NetBSD: subr_prf.c,v 1.45 1997/10/24 18:14:25 chuck Exp $ */ /*- @@ -317,12 +317,16 @@ putchar(c, flags, tp) c != '\0' && c != '\r' && c != 0177 && msgbufmapped) { mbp = msgbufp; if (mbp->msg_magic != MSG_MAGIC) { - bzero((caddr_t) mbp, sizeof(*mbp)); - mbp->msg_magic = MSG_MAGIC; + /* Nothing we can do */ } mbp->msg_bufc[mbp->msg_bufx++] = c; - if (mbp->msg_bufx < 0 || mbp->msg_bufx >= MSG_BSIZE) + if (mbp->msg_bufx < 0 || mbp->msg_bufx >= mbp->msg_bufs) mbp->msg_bufx = 0; + /* If the buffer is full, keep the most recent data. */ + if (mbp->msg_bufr == mbp->msg_bufx) { + if (++mbp->msg_bufr >= mbp->msg_bufs) + mbp->msg_bufr = 0; + } } if ((flags & TOCONS) && constty == NULL && c != '\0') (*v_putc)(c); |