Date: Wed, 29 Aug 2001 22:19:23 -0700 From: Dima Dorfman <dima@unixfreak.org> To: audit@freebsd.org Subject: syslogd option to bind to specific address Message-ID: <20010830051928.775393E2F@bazooka.unixfreak.org>
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Please review the attacehd patch to:
Introduce a -b option that allows the user to specify which address to
bind to. This is useful for hosts running jails that need syslog to
maintain an open socket to log to a remote host.
Thanks.
Index: syslogd.8
===================================================================
RCS file: /home/ncvs/src/usr.sbin/syslogd/syslogd.8,v
retrieving revision 1.40
diff -u -r1.40 syslogd.8
--- syslogd.8 2001/08/27 11:04:09 1.40
+++ syslogd.8 2001/08/27 11:11:10
@@ -42,6 +42,7 @@
.Nm
.Op Fl 46Adknsuv
.Op Fl a Ar allowed_peer
+.Op Fl b Ar bind_address
.Op Fl f Ar config_file
.Op Fl m Ar mark_interval
.Op Fl p Ar log_socket
@@ -151,6 +152,10 @@
options are ignored if the
.Fl s
option is also specified.
+.It Fl b Ar bind_address
+Specify one specific IP address or hostname to bind to.
+If a hostname is specified,
+the IPv4 or IPv6 address which corresponds to it is used.
.It Fl d
Put
.Nm
Index: syslogd.c
===================================================================
RCS file: /home/ncvs/src/usr.sbin/syslogd/syslogd.c,v
retrieving revision 1.80
diff -u -r1.80 syslogd.c
--- syslogd.c 2001/07/19 22:04:09 1.80
+++ syslogd.c 2001/08/27 11:11:11
@@ -291,7 +291,7 @@
void die __P((int));
void domark __P((int));
void fprintlog __P((struct filed *, int, char *));
-int* socksetup __P((int));
+int* socksetup __P((int, const char *));
void init __P((int));
void logerror __P((const char *));
void logmsg __P((int, char *, char *, int));
@@ -319,13 +319,15 @@
struct sockaddr_storage frominet;
FILE *fp;
char *p, *hname, line[MAXLINE + 1];
+ const char *bindhostname;
struct timeval tv, *tvp;
struct sigaction sact;
sigset_t mask;
pid_t ppid = 1;
socklen_t len;
- while ((ch = getopt(argc, argv, "46Aa:df:kl:m:np:P:suv")) != -1)
+ bindhostname = NULL;
+ while ((ch = getopt(argc, argv, "46Aa:b:df:kl:m:np:P:suv")) != -1)
switch (ch) {
case '4':
family = PF_INET;
@@ -342,6 +344,9 @@
if (allowaddr(optarg) == -1)
usage();
break;
+ case 'b':
+ bindhostname = optarg;
+ break;
case 'd': /* debug */
Debug++;
break;
@@ -447,7 +452,7 @@
}
}
if (SecureMode <= 1)
- finet = socksetup(family);
+ finet = socksetup(family, bindhostname);
if (finet) {
if (SecureMode) {
@@ -2235,8 +2240,9 @@
}
int *
-socksetup(af)
+socksetup(af, bindhostname)
int af;
+ const char *bindhostname;
{
struct addrinfo hints, *res, *r;
int error, maxs, *s, *socks;
@@ -2245,7 +2251,7 @@
hints.ai_flags = AI_PASSIVE;
hints.ai_family = af;
hints.ai_socktype = SOCK_DGRAM;
- error = getaddrinfo(NULL, "syslog", &hints, &res);
+ error = getaddrinfo(bindhostname, "syslog", &hints, &res);
if (error) {
logerror(gai_strerror(error));
errno = 0;
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