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Disable libwrap (TCP wrappers) support in rpcbind by default, introducing

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new command line options -W, to enable it when needed.

On my tests this change by almost ten times improves rpcbind performance.

No objections:	many, net@
This commit is contained in:
Alexander Motin 2014-03-06 17:33:27 +00:00
parent d464d78756
commit ea9ed3d85b
6 changed files with 37 additions and 11 deletions
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5
UPDATING
View File

@ -31,6 +31,11 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW:
disable the most expensive debugging functionality run
"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
20140306:
Support for libwrap (TCP wrappers) in rpcbind was disabled by default
to improve performance. To re-enable it, if needed, run rpcbind
with command line option -W.
20140226:
Switched back to the GPL dtc compiler due to updates in the upstream
dts files not being supported by the BSDL dtc compiler. You will need

1
etc/hosts.allow
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@ -60,6 +60,7 @@ exim : localhost : allow
exim : ALL : allow
# Rpcbind is used for all RPC services; protect your NFS!
# Rpcbind should be running with -W option to support this.
# (IP addresses rather than hostnames *MUST* be used here)
#rpcbind : 192.0.2.32/255.255.255.224 : allow
#rpcbind : 192.0.2.96/255.255.255.224 : allow

4
usr.sbin/rpcbind/rpcbind.8
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@ -2,7 +2,7 @@
.\" Copyright 1989 AT&T
.\" Copyright 1991 Sun Microsystems, Inc.
.\" $FreeBSD$
.Dd April 23, 2007
.Dd March 6, 2014
.Dt RPCBIND 8
.Os
.Sh NAME
@ -133,6 +133,8 @@ to use non-privileged ports for outgoing connections, preventing non-privileged
clients from using
.Nm
to connect to services from a privileged port.
.It Fl W
Enable libwrap (TCP wrappers) support.
.El
.Sh NOTES
All RPC servers must be restarted if

19
usr.sbin/rpcbind/rpcbind.c
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@ -88,6 +88,9 @@ rpcblist_ptr list_rbl; /* A list of version 3/4 rpcbind services */
int runasdaemon = 0;
int insecure = 0;
int oldstyle_local = 0;
#ifdef LIBWRAP
int libwrap = 0;
#endif
int verboselog = 0;
char **hosts = NULL;
@ -785,7 +788,12 @@ parseargs(int argc, char *argv[])
#else
#define WSOP ""
#endif
while ((c = getopt(argc, argv, "6adh:iLls" WSOP)) != -1) {
#ifdef LIBWRAP
#define WRAPOP "W"
#else
#define WRAPOP ""
#endif
while ((c = getopt(argc, argv, "6adh:iLls" WRAPOP WSOP)) != -1) {
switch (c) {
case '6':
ipv6_only = 1;
@ -818,6 +826,11 @@ parseargs(int argc, char *argv[])
case 's':
runasdaemon = 1;
break;
#ifdef LIBWRAP
case 'W':
libwrap = 1;
break;
#endif
#ifdef WARMSTART
case 'w':
warmstart = 1;
@ -825,8 +838,8 @@ parseargs(int argc, char *argv[])
#endif
default: /* error */
fprintf(stderr,
"usage: rpcbind [-6adiLls%s] [-h bindip]\n",
WSOP);
"usage: rpcbind [-6adiLls%s%s] [-h bindip]\n",
WRAPOP, WSOP);
exit (1);
}
}

3
usr.sbin/rpcbind/rpcbind.h
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@ -66,6 +66,9 @@ struct r_rmtcall_args {
extern int debugging;
extern int doabort;
#ifdef LIBWRAP
extern int libwrap;
#endif
extern int verboselog;
extern int insecure;
extern int oldstyle_local;

10
usr.sbin/rpcbind/security.c
View File

@ -108,14 +108,16 @@ check_access(SVCXPRT *xprt, rpcproc_t proc, void *args, unsigned int rpcbvers)
}
#ifdef LIBWRAP
if (addr->sa_family == AF_LOCAL)
return 1;
request_init(&req, RQ_DAEMON, "rpcbind", RQ_CLIENT_SIN, addr, 0);
if (libwrap && addr->sa_family != AF_LOCAL) {
request_init(&req, RQ_DAEMON, "rpcbind", RQ_CLIENT_SIN, addr,
0);
sock_methods(&req);
if(!hosts_access(&req)) {
logit(deny_severity, addr, proc, prog, ": request from unauthorized host");
logit(deny_severity, addr, proc, prog,
": request from unauthorized host");
return 0;
}
}
#endif
if (verboselog)
logit(log_severity, addr, proc, prog, "");