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grow AF_UNIX receive buffer size

This commit is contained in:
christos 2018-05-06 19:16:36 +00:00
parent 5e984cf5ac
commit 2ed636d665
1 changed files with 24 additions and 2 deletions
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26
usr.sbin/syslogd/syslogd.c
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@ -1,4 +1,4 @@
/* $NetBSD: syslogd.c,v 1.124 2017/09/10 17:01:07 ginsbach Exp $ */
/* $NetBSD: syslogd.c,v 1.125 2018/05/06 19:16:36 christos Exp $ */
/*
* Copyright (c) 1983, 1988, 1993, 1994
@ -39,7 +39,7 @@ __COPYRIGHT("@(#) Copyright (c) 1983, 1988, 1993, 1994\
#if 0
static char sccsid[] = "@(#)syslogd.c 8.3 (Berkeley) 4/4/94";
#else
__RCSID("$NetBSD: syslogd.c,v 1.124 2017/09/10 17:01:07 ginsbach Exp $");
__RCSID("$NetBSD: syslogd.c,v 1.125 2018/05/06 19:16:36 christos Exp $");
#endif
#endif /* not lint */
@ -113,6 +113,7 @@ typedef struct deadq_entry {
*/
#define DQ_TIMO_INIT 2
#define RCVBUFLEN 16384
/*
* Intervals at which we flush out "message repeated" messages,
* in seconds after previous message is logged. After each flush,
@ -272,6 +273,8 @@ static inline void
#endif /* !DISABLE_TLS */
static int writev1(int, struct iovec *, size_t);
static void setsockbuf(int, const char *);
/* for make_timestamp() */
char timestamp[MAX_TIMESTAMPLEN + 1];
/*
@ -492,6 +495,7 @@ getgroup:
logerror("Cannot create `%s'", *pp);
die(0, 0, NULL);
}
setsockbuf(funix[j], *pp);
DPRINTF(D_NET, "Listening on unix dgram socket `%s'\n", *pp);
}
@ -660,6 +664,24 @@ usage(void)
exit(1);
}
static void
setsockbuf(int fd, const char *name)
{
int buflen;
socklen_t socklen = sizeof(buflen);
if (getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &buflen, &socklen) == -1) {
logerror("getsockopt: SO_RCVBUF: `%s'", name);
return;
}
if (buflen >= RCVBUFLEN)
return;
buflen = RCVBUFLEN;
if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &buflen, socklen) == -1) {
logerror("setsockopt: SO_RCVBUF: `%s'", name);
return;
}
}
/*
* Dispatch routine for reading /dev/klog
*