/* $OpenLDAP$ */
-/*
- * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2005 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* Portions Copyright (c) 1995 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
*/
#include "portable.h"
#include "lutil.h"
#include "slap.h"
-#ifdef LDAP_SYNCREPL
#include "ldap_rq.h"
-#endif
#ifdef HAVE_TCPD
#include <tcpd.h>
#define SLAPD_LISTEN 10
static ber_socket_t wake_sds[2];
+static int emfile;
#if defined(NO_THREADS) || defined(HAVE_GNU_PTH)
static int waking;
do { if (w) tcp_write( wake_sds[1], "0", 1 ); } while(0)
#endif
-#ifndef HAVE_WINSOCK
-static
-#endif
volatile sig_atomic_t slapd_shutdown = 0, slapd_gentle_shutdown = 0;
+volatile sig_atomic_t slapd_abrupt_shutdown = 0;
static struct slap_daemon {
ldap_pvt_thread_mutex_t sd_mutex;
/*
* Add a descriptor to daemon control
+ *
+ * If isactive, the descriptor is a live server session and is subject
+ * to idletimeout control. Otherwise, the descriptor is a passive
+ * listener or an outbound client session, and not subject to
+ * idletimeout.
*/
-static void slapd_add(ber_socket_t s) {
+static void slapd_add(ber_socket_t s, int isactive) {
ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
assert( !FD_ISSET( s, &slap_daemon.sd_actives ));
}
#endif
- slap_daemon.sd_nactives++;
+ if ( isactive ) {
+ slap_daemon.sd_nactives++;
+ }
FD_SET( s, &slap_daemon.sd_actives );
FD_SET( s, &slap_daemon.sd_readers );
/*
* Remove the descriptor from daemon control
*/
-void slapd_remove(ber_socket_t s, int wake) {
+void slapd_remove(ber_socket_t s, int wasactive, int wake) {
ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
- slap_daemon.sd_nactives--;
+ if ( wasactive ) {
+ slap_daemon.sd_nactives--;
+ }
#ifdef NEW_LOGGING
LDAP_LOG( CONNECTION, DETAIL1,
FD_CLR( s, &slap_daemon.sd_readers );
FD_CLR( s, &slap_daemon.sd_writers );
+ /* If we ran out of file descriptors, we dropped a listener from
+ * the select() loop. Now that we're removing a session from our
+ * control, we can try to resume a dropped listener to use.
+ */
+ if ( emfile ) {
+ int i;
+ for ( i = 0; slap_listeners[i] != NULL; i++ ) {
+ if ( slap_listeners[i]->sl_sd != AC_SOCKET_INVALID ) {
+ if ( slap_listeners[i]->sl_sd == s ) continue;
+ if ( slap_listeners[i]->sl_is_mute ) {
+ slap_listeners[i]->sl_is_mute = 0;
+ emfile--;
+ break;
+ }
+ }
+ }
+ /* Walked the entire list without enabling anything; emfile
+ * counter is stale. Reset it.
+ */
+ if ( slap_listeners[i] == NULL )
+ emfile = 0;
+ }
ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
}
}
l.sl_url.bv_val = NULL;
+ l.sl_is_mute = 0;
#ifndef HAVE_TLS
if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
psal = sal;
while ( *sal != NULL ) {
+ char *af;
switch( (*sal)->sa_family ) {
case AF_INET:
+ af = "IPv4";
+ break;
#ifdef LDAP_PF_INET6
case AF_INET6:
+ af = "IPv6";
+ break;
#endif
#ifdef LDAP_PF_LOCAL
case AF_LOCAL:
-#endif
+ af = "Local";
break;
+#endif
default:
sal++;
continue;
int err = sock_errno();
#ifdef NEW_LOGGING
LDAP_LOG( CONNECTION, ERR,
- "slap_open_listener: socket() failed errno=%d (%s)\n",
- err, sock_errstr(err), 0 );
+ "slap_open_listener: %s socket() failed errno=%d (%s)\n",
+ af, err, sock_errstr(err) );
#else
Debug( LDAP_DEBUG_ANY,
- "daemon: socket() failed errno=%d (%s)\n", err,
- sock_errstr(err), 0 );
+ "daemon: %s socket() failed errno=%d (%s)\n",
+ af, err, sock_errstr(err) );
#endif
sal++;
continue;
"great %ld\n", (long)l.sl_sd, (long)dtblsize, 0 );
#else
Debug( LDAP_DEBUG_ANY,
- "daemon: listener descriptor %ld is too great %ld\n",
- (long) l.sl_sd, (long) dtblsize, 0 );
+ "daemon: listener descriptor %ld is too great %ld\n",
+ (long) l.sl_sd, (long) dtblsize, 0 );
#endif
tcp_close( l.sl_sd );
sal++;
/* enable address reuse */
tmp = 1;
rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
- (char *) &tmp, sizeof(tmp) );
+ (char *) &tmp, sizeof(tmp) );
if ( rc == AC_SOCKET_ERROR ) {
int err = sock_errno();
#ifdef NEW_LOGGING
for( i=0; u[i] != NULL; i++ ) {
#ifdef NEW_LOGGING
LDAP_LOG( CONNECTION, DETAIL1,
- "slap_daemon_init: listen on %s\n.", u[i], 0, 0 );
+ "slap_daemon_init: listen on %s\n", u[i], 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
u[i], 0, 0 );
for ( l = 0; slap_listeners[l] != NULL; l++ ) {
if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
if ( remove )
- slapd_remove( slap_listeners[l]->sl_sd, 0 );
+ slapd_remove( slap_listeners[l]->sl_sd, 0, 0 );
#ifdef LDAP_PF_LOCAL
if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
{
int l;
time_t last_idle_check = 0;
- time( &starttime );
+ struct timeval idle;
+ int ebadf = 0;
+
+#define SLAPD_IDLE_CHECK_LIMIT 4
if ( global_idletimeout > 0 ) {
last_idle_check = slap_get_time();
+ /* Set the select timeout.
+ * Don't just truncate, preserve the fractions of
+ * seconds to prevent sleeping for zero time.
+ */
+ idle.tv_sec = global_idletimeout/SLAPD_IDLE_CHECK_LIMIT;
+ idle.tv_usec = global_idletimeout - idle.tv_sec * SLAPD_IDLE_CHECK_LIMIT;
+ idle.tv_usec *= 1000000 / SLAPD_IDLE_CHECK_LIMIT;
+ } else {
+ idle.tv_sec = 0;
+ idle.tv_usec = 0;
}
+
for ( l = 0; slap_listeners[l] != NULL; l++ ) {
if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
continue;
* are unnecessary.
*/
if ( slap_listeners[l]->sl_is_udp ) {
- slapd_add( slap_listeners[l]->sl_sd );
+ slapd_add( slap_listeners[l]->sl_sd, 1 );
continue;
}
#endif
return( (void*)-1 );
}
- slapd_add( slap_listeners[l]->sl_sd );
+ slapd_add( slap_listeners[l]->sl_sd, 0 );
}
#ifdef HAVE_NT_SERVICE_MANAGER
int at;
ber_socket_t nfds;
#define SLAPD_EBADF_LIMIT 16
- int ebadf = 0;
- int emfile = 0;
-#define SLAPD_IDLE_CHECK_LIMIT 4
time_t now;
-
fd_set readfds;
fd_set writefds;
Sockaddr from;
- struct timeval zero;
+ struct timeval tv;
struct timeval *tvp;
-#ifdef LDAP_SYNCREPL
- struct timeval diff;
struct timeval *cat;
time_t tdelta = 1;
struct re_s* rtask;
-#endif
-
now = slap_get_time();
- if( emfile ) {
+ if( ( global_idletimeout > 0 ) &&
+ difftime( last_idle_check +
+ global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
connections_timeout_idle( now );
-
- } else if ( global_idletimeout > 0 ) {
- if ( difftime( last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
- connections_timeout_idle( now );
- last_idle_check = now;
- }
+ last_idle_check = now;
}
+ tv = idle;
#ifdef SIGHUP
if( slapd_gentle_shutdown ) {
FD_ZERO( &writefds );
FD_ZERO( &readfds );
- zero.tv_sec = 0;
- zero.tv_usec = 0;
+ at = 0;
ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
for ( l = 0; slap_listeners[l] != NULL; l++ ) {
if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
continue;
+ if ( slap_listeners[l]->sl_is_mute )
+ FD_CLR( slap_listeners[l]->sl_sd, &readfds );
+ else
if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds))
FD_SET( slap_listeners[l]->sl_sd, &readfds );
}
#else
nfds = dtblsize;
#endif
+ if ( global_idletimeout && slap_daemon.sd_nactives )
+ at = 1;
ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
- at = ldap_pvt_thread_pool_backload(&connection_pool);
+ if ( at
+#if defined(HAVE_YIELDING_SELECT) || defined(NO_THREADS)
+ && ( tv.tv_sec || tv.tv_usec )
+#endif
+ )
+ tvp = &tv;
+ else
+ tvp = NULL;
-#ifdef LDAP_SYNCREPL
ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
rtask = ldap_pvt_runqueue_next_sched( &syncrepl_rq, &cat );
while ( cat && cat->tv_sec && cat->tv_sec <= now ) {
if ( ldap_pvt_runqueue_isrunning( &syncrepl_rq, rtask )) {
- ldap_pvt_runqueue_resched( &syncrepl_rq, rtask );
+ ldap_pvt_runqueue_resched( &syncrepl_rq, rtask, 0 );
} else {
ldap_pvt_runqueue_runtask( &syncrepl_rq, rtask );
- ldap_pvt_runqueue_resched( &syncrepl_rq, rtask );
+ ldap_pvt_runqueue_resched( &syncrepl_rq, rtask, 0 );
ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
ldap_pvt_thread_pool_submit( &connection_pool,
rtask->routine, (void *) rtask );
+ ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
}
rtask = ldap_pvt_runqueue_next_sched( &syncrepl_rq, &cat );
}
- rtask = ldap_pvt_runqueue_next_sched( &syncrepl_rq, &cat );
ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
- if ( cat != NULL ) {
- diff.tv_sec = difftime( cat->tv_sec, now );
- if ( diff.tv_sec == 0 )
- diff.tv_sec = tdelta;
- }
-#endif
-
-#if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
- tvp = NULL;
-#else
- tvp = at ? &zero : NULL;
-#endif
-
-#ifdef LDAP_SYNCREPL
- if ( cat != NULL ) {
- if ( tvp == NULL ) {
- tvp = &diff;
+ if ( cat && cat->tv_sec ) {
+ time_t diff = difftime( cat->tv_sec, now );
+ if ( diff == 0 )
+ diff = tdelta;
+ if ( tvp == NULL || diff < tv.tv_sec ) {
+ tv.tv_sec = diff;
+ tv.tv_usec = 0;
+ tvp = &tv;
}
}
-#endif
for ( l = 0; slap_listeners[l] != NULL; l++ ) {
- if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
+ if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ||
+ slap_listeners[l]->sl_is_mute )
continue;
#ifdef NEW_LOGGING
case 0: /* timeout - let threads run */
ebadf = 0;
+#ifndef HAVE_YIELDING_SELECT
#ifdef NEW_LOGGING
LDAP_LOG( CONNECTION, DETAIL2,
"slapd_daemon_task: select timeout - yielding\n", 0, 0, 0 );
#endif
ldap_pvt_thread_yield();
+#endif
continue;
default: /* something happened - deal with it */
socklen_t len = sizeof(from);
long id;
slap_ssf_t ssf = 0;
- char *authid = NULL;
+ struct berval authid = BER_BVNULL;
#ifdef SLAPD_RLOOKUPS
char hbuf[NI_MAXHOST];
#endif
char *dnsname = NULL;
char *peeraddr = NULL;
#ifdef LDAP_PF_LOCAL
- char peername[MAXPATHLEN + sizeof("PATH=")];
+ char peername[MAXPATHLEN + sizeof("PATH=")];
#elif defined(LDAP_PF_INET6)
- char peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
+ char peername[sizeof(
+ "IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
#else
- char peername[sizeof("IP=255.255.255.255:65336")];
+ char peername[sizeof("IP=255.255.255.255:65336")];
#endif /* LDAP_PF_LOCAL */
peername[0] = '\0';
if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) )
continue;
-
+
#ifdef LDAP_CONNECTIONLESS
if ( slap_listeners[l]->sl_is_udp ) {
/* The first time we receive a query, we set this
* of the slapd.
*/
if ( slap_listeners[l]->sl_is_udp < 2 ) {
- id = connection_init(
- slap_listeners[l]->sl_sd,
- slap_listeners[l], "", "",
- 2, ssf, authid );
+ id = connection_init(
+ slap_listeners[l]->sl_sd,
+ slap_listeners[l], "", "",
+ CONN_IS_UDP, ssf, NULL );
slap_listeners[l]->sl_is_udp++;
}
continue;
}
#endif
+ /* Don't need to look at this in the data loops */
+ FD_CLR( slap_listeners[l]->sl_sd, &readfds );
+ FD_CLR( slap_listeners[l]->sl_sd, &writefds );
+
+# ifdef LDAP_PF_LOCAL
+ /* FIXME: apparently accept doesn't fill
+ * the sun_path sun_path member */
+ from.sa_un_addr.sun_path[0] = '\0';
+# endif /* LDAP_PF_LOCAL */
s = accept( slap_listeners[l]->sl_sd,
(struct sockaddr *) &from, &len );
if ( s == AC_SOCKET_INVALID ) {
int err = sock_errno();
+ if(
#ifdef EMFILE
- if( err == EMFILE ) {
- emfile++;
- } else
+ err == EMFILE ||
#endif
#ifdef ENFILE
- if( err == ENFILE ) {
- emfile++;
- } else
+ err == ENFILE ||
#endif
+ 0 )
{
- emfile=0;
+ ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
+ emfile++;
+ /* Stop listening until an existing session closes */
+ slap_listeners[l]->sl_is_mute = 1;
+ ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
}
- if( emfile < 3 ) {
#ifdef NEW_LOGGING
- LDAP_LOG( CONNECTION, ERR,
- "slapd_daemon_task: accept(%ld) failed errno=%d (%s)\n",
- (long)slap_listeners[l]->sl_sd,
- err, sock_errstr(err) );
+ LDAP_LOG( CONNECTION, ERR,
+ "slapd_daemon_task: accept(%ld) failed errno=%d (%s)\n",
+ (long)slap_listeners[l]->sl_sd,
+ err, sock_errstr(err) );
#else
- Debug( LDAP_DEBUG_ANY,
- "daemon: accept(%ld) failed errno=%d (%s)\n",
- (long) slap_listeners[l]->sl_sd, err,
- sock_errstr(err) );
-#endif
- } else {
- /* prevent busy loop */
-# ifdef HAVE_USLEEP
- if( emfile % 4 == 3 ) usleep( 250 );
-# else
- if( emfile % 8 == 7 ) sleep( 1 );
-# endif
- }
-
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: accept(%ld) failed errno=%d (%s)\n",
+ (long) slap_listeners[l]->sl_sd, err,
+ sock_errstr(err) );
+#endif
ldap_pvt_thread_yield();
continue;
}
- emfile = 0;
#ifndef HAVE_WINSOCK
/* make sure descriptor number isn't too great */
switch ( from.sa_addr.sa_family ) {
# ifdef LDAP_PF_LOCAL
case AF_LOCAL:
+ /* FIXME: apparently accept doesn't fill
+ * the sun_path sun_path member */
+ if ( from.sa_un_addr.sun_path[0] == '\0' ) {
+ AC_MEMCPY( from.sa_un_addr.sun_path,
+ slap_listeners[l]->sl_sa.sa_un_addr.sun_path,
+ sizeof( from.sa_un_addr.sun_path ) );
+ }
+
sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
ssf = LDAP_PVT_SASL_LOCAL_SSF;
{
gid_t gid;
if( getpeereid( s, &uid, &gid ) == 0 ) {
- authid = ch_malloc(
+ authid.bv_val = ch_malloc(
sizeof("uidnumber=4294967295+gidnumber=4294967295,"
- "cn=peercred,cn=external,cn=auth"));
- sprintf(authid, "uidnumber=%d+gidnumber=%d,"
+ "cn=peercred,cn=external,cn=auth"));
+ authid.bv_len = sprintf( authid.bv_val,
+ "uidnumber=%d+gidnumber=%d,"
"cn=peercred,cn=external,cn=auth",
(int) uid, (int) gid);
}
{
/* DENY ACCESS */
Statslog( LDAP_DEBUG_STATS,
- "fd=%ld DENIED from %s (%s)",
+ "fd=%ld DENIED from %s (%s)\n",
(long) s,
dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
peername,
#ifdef HAVE_TLS
- slap_listeners[l]->sl_is_tls,
+ slap_listeners[l]->sl_is_tls ? CONN_IS_TLS : 0,
#else
0,
#endif
ssf,
- authid );
+ authid.bv_val ? &authid : NULL );
- if( authid ) ch_free(authid);
+ if( authid.bv_val ) ch_free(authid.bv_val);
if( id < 0 ) {
#ifdef NEW_LOGGING
slap_listeners[l]->sl_name.bv_val,
0 );
- slapd_add( s );
+ slapd_add( s, 1 );
continue;
}
#else
for ( i = 0; i < nfds; i++ ) {
int r, w;
- int is_listener = 0;
- for ( l = 0; slap_listeners[l] != NULL; l++ ) {
- if ( i == slap_listeners[l]->sl_sd ) {
-#ifdef LDAP_CONNECTIONLESS
- /* The listener is the data port. Don't
- * skip it.
- */
- if (slap_listeners[l]->sl_is_udp) continue;
-#endif
- is_listener = 1;
- break;
- }
- }
- if ( is_listener ) {
- continue;
- }
r = FD_ISSET( i, &readfds );
w = FD_ISSET( i, &writefds );
if ( r || w ) {
#endif
{
ber_socket_t wd;
- int is_listener = 0;
#ifdef HAVE_WINSOCK
wd = writefds.fd_array[i];
#else
wd = i;
#endif
- for ( l = 0; slap_listeners[l] != NULL; l++ ) {
- if ( i == slap_listeners[l]->sl_sd ) {
-#ifdef LDAP_CONNECTIONLESS
- if (slap_listeners[l]->sl_is_udp) continue;
-#endif
- is_listener = 1;
- break;
- }
- }
- if ( is_listener ) {
- continue;
- }
#ifdef NEW_LOGGING
LDAP_LOG( CONNECTION, DETAIL2,
"slapd_daemon_task: write active on %d\n", wd, 0, 0 );
#endif
{
ber_socket_t rd;
- int is_listener = 0;
-
#ifdef HAVE_WINSOCK
rd = readfds.fd_array[i];
#else
rd = i;
#endif
- for ( l = 0; slap_listeners[l] != NULL; l++ ) {
- if ( rd == slap_listeners[l]->sl_sd ) {
-#ifdef LDAP_CONNECTIONLESS
- if (slap_listeners[l]->sl_is_udp) continue;
-#endif
- is_listener = 1;
- break;
- }
- }
- if ( is_listener ) {
- continue;
- }
-
#ifdef NEW_LOGGING
LDAP_LOG( CONNECTION, DETAIL2,
"slapd_daemon_task: read activity on %d\n", rd, 0, 0 );
slapd_close( rd );
}
}
+#ifndef HAVE_YIELDING_SELECT
ldap_pvt_thread_yield();
+#endif
}
if( slapd_shutdown == 1 ) {
slap_listeners = NULL;
if( !slapd_gentle_shutdown ) {
+ slapd_abrupt_shutdown = 1;
connections_shutdown();
}
RETSIGTYPE
slap_sig_shutdown( int sig )
{
+#if 0
#ifdef NEW_LOGGING
LDAP_LOG( CONNECTION, CRIT,
"slap_sig_shutdown: signal %d\n", sig, 0, 0 );
#else
Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
+#endif
#endif
/*
#if HAVE_NT_SERVICE_MANAGER && SIGBREAK
if (is_NT_Service && sig == SIGBREAK)
-#ifdef NEW_LOGGING
- LDAP_LOG( CONNECTION, CRIT,
- "slap_sig_shutdown: SIGBREAK ignored.\n", 0, 0, 0 );
-#else
- Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
- 0, 0, 0);
-#endif
+ ;
else
#endif
#ifdef SIGHUP
}
-void slapd_add_internal(ber_socket_t s) {
- slapd_add(s);
+void slapd_add_internal(ber_socket_t s, int isactive) {
+ slapd_add(s, isactive);
}
Listener ** slapd_get_listeners(void) {
return slap_listeners;
}
+
+void slap_wake_listener()
+{
+ WAKE_LISTENER(1);
+}
projects / openldap / blobdiff