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Merge FreeBSD socket receive buffer size patch, SVN r259368

Browse Source 
https://svnweb.freebsd.org/base/stable/10/usr.sbin/syslogd/syslogd.c?r1=256281&r2=259368

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson 2018-08-02 15:24:42 +02:00
parent b3aa3f4830
commit 678b309f71
1 changed files with 24 additions and 0 deletions
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24
syslogd.c
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@ -517,6 +517,7 @@ static char sccsid[] = "@(#)syslogd.c 5.27 (Berkeley) 10/10/88";
#define DEFUPRI (LOG_USER|LOG_NOTICE)
#define DEFSPRI (LOG_KERN|LOG_CRIT)
#define TIMERINTVL 30 /* interval for checking flush, mark */
#define RCVBUF_MINSIZE (80 * 1024) /* minimum size of dgram rcv buffer */
#define CONT_LINE 1 /* Allow continuation lines */
@ -1264,6 +1265,23 @@ int usage()
exit(1);
}
/*
* From FreeBSD syslogd SVN r259368
* https://svnweb.freebsd.org/base/stable/10/usr.sbin/syslogd/syslogd.c?r1=256281&r2=259368
*/
static void increase_rcvbuf(int fd)
{
socklen_t len, slen;
slen = sizeof(len);
if (getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &len, &slen) == 0) {
if (len < RCVBUF_MINSIZE) {
len = RCVBUF_MINSIZE;
setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &len, sizeof(len));
}
}
}
#ifdef SYSLOG_UNIXAF
static int create_unix_socket(const char *path)
{
@ -1292,6 +1310,9 @@ static int create_unix_socket(const char *path)
#endif
return -1;
}
increase_rcvbuf(fd);
return fd;
}
#endif
@ -1345,6 +1366,9 @@ static int *create_inet_sockets()
close(*s);
continue;
}
increase_rcvbuf(*s);
/* We must not block on the network socket, in case a packet
* gets lost between select and recv, otherise the process
* will stall until the timeout, and other processes trying to