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+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * Portions Copyright 2007 by Howard Chu, Symas Corporation.
+ * 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 <stdio.h>
+
+#include <ac/ctype.h>
+#include <ac/errno.h>
+#include <ac/socket.h>
+#include <ac/string.h>
+#include <ac/time.h>
+#include <ac/unistd.h>
+
+#include "slap.h"
+#include "ldap_pvt_thread.h"
+#include "lutil.h"
+
+#include "ldap_rq.h"
+
+#ifdef HAVE_SYSTEMD_SD_DAEMON_H
+#include <systemd/sd-daemon.h>
+#endif
+
+#ifdef HAVE_POLL
+#include <poll.h>
+#endif
+
+#ifdef HAVE_KQUEUE
+# include <sys/types.h>
+# include <sys/event.h>
+# include <sys/time.h>
+#elif defined(HAVE_SYS_EPOLL_H) && defined(HAVE_EPOLL)
+# include <sys/epoll.h>
+#elif defined(SLAP_X_DEVPOLL) && defined(HAVE_SYS_DEVPOLL_H) && defined(HAVE_DEVPOLL)
+# include <sys/types.h>
+# include <sys/stat.h>
+# include <fcntl.h>
+# include <sys/devpoll.h>
+#endif /* ! kqueue && ! epoll && ! /dev/poll */
+
+#ifdef HAVE_TCPD
+int allow_severity = LOG_INFO;
+int deny_severity = LOG_NOTICE;
+#endif /* TCP Wrappers */
+
+#ifdef LDAP_PF_LOCAL
+# include <sys/stat.h>
+/* this should go in <ldap.h> as soon as it is accepted */
+# define LDAPI_MOD_URLEXT "x-mod"
+#endif /* LDAP_PF_LOCAL */
+
+#ifdef LDAP_PF_INET6
+int slap_inet4or6 = AF_UNSPEC;
+#else /* ! INETv6 */
+int slap_inet4or6 = AF_INET;
+#endif /* ! INETv6 */
+
+/* globals */
+time_t starttime;
+ber_socket_t dtblsize;
+slap_ssf_t local_ssf = LDAP_PVT_SASL_LOCAL_SSF;
+struct runqueue_s slapd_rq;
+
+int slapd_daemon_threads = 1;
+int slapd_daemon_mask;
+
+#ifdef LDAP_TCP_BUFFER
+int slapd_tcp_rmem;
+int slapd_tcp_wmem;
+#endif /* LDAP_TCP_BUFFER */
+
+Listener **slap_listeners = NULL;
+static volatile sig_atomic_t listening = 1; /* 0 when slap_listeners closed */
+
+#ifndef SLAPD_LISTEN_BACKLOG
+#define SLAPD_LISTEN_BACKLOG 2048
+#endif /* ! SLAPD_LISTEN_BACKLOG */
+
+#define DAEMON_ID(fd) (fd & slapd_daemon_mask)
+
+typedef ber_socket_t sdpair[2];
+
+static sdpair *wake_sds;
+static ldap_pvt_thread_mutex_t emfile_mutex;
+static int emfile;
+
+static volatile int waking;
+#define WAKE_LISTENER(l,w) do { \
+ if (w) { \
+ (void)!tcp_write( SLAP_FD2SOCK(wake_sds[l][1]), "0", 1 ); \
+ } \
+} while (0)
+
+ldap_pvt_thread_mutex_t slapd_init_mutex;
+ldap_pvt_thread_cond_t slapd_init_cond;
+int slapd_ready = 0;
+
+volatile sig_atomic_t slapd_shutdown = 0;
+volatile sig_atomic_t slapd_gentle_shutdown = 0;
+volatile sig_atomic_t slapd_abrupt_shutdown = 0;
+
+#ifdef HAVE_WINSOCK
+ldap_pvt_thread_mutex_t slapd_ws_mutex;
+SOCKET *slapd_ws_sockets;
+#define SD_READ 1
+#define SD_WRITE 2
+#define SD_ACTIVE 4
+#define SD_LISTENER 8
+#endif
+
+#ifdef HAVE_TCPD
+static ldap_pvt_thread_mutex_t sd_tcpd_mutex;
+#endif /* TCP Wrappers */
+
+typedef struct slap_daemon_st {
+ ldap_pvt_thread_mutex_t sd_mutex;
+
+ ber_socket_t sd_nactives;
+ int sd_nwriters;
+ int sd_nfds;
+ ldap_pvt_thread_t sd_tid;
+
+#if defined(HAVE_KQUEUE)
+ uint8_t* sd_fdmodes; /* indexed by fd */
+ Listener** sd_l; /* indexed by fd */
+ /* Double buffer the kqueue changes to avoid holding the sd_mutex \
+ * during a kevent() call. \
+ */
+ struct kq_change {
+ struct kevent* sd_changes;
+ int sd_nchanges;
+ int sd_maxchanges;
+ } sd_kqc[2];
+ int sd_changeidx; /* index to current change buffer */
+ int sd_kq;
+#elif defined(HAVE_EPOLL)
+
+ struct epoll_event *sd_epolls;
+ int *sd_index;
+ int sd_epfd;
+#elif defined(SLAP_X_DEVPOLL) && defined(HAVE_DEVPOLL)
+ /* eXperimental */
+ struct pollfd *sd_pollfd;
+ int *sd_index;
+ Listener **sd_l;
+ int sd_dpfd;
+#else /* ! kqueue && ! epoll && ! /dev/poll */
+#ifdef HAVE_WINSOCK
+ char *sd_flags;
+ char *sd_rflags;
+#else /* ! HAVE_WINSOCK */
+ fd_set sd_actives;
+ fd_set sd_readers;
+ fd_set sd_writers;
+#endif /* ! HAVE_WINSOCK */
+#endif /* ! kqueue && ! epoll && ! /dev/poll */
+} slap_daemon_st;
+
+static slap_daemon_st *slap_daemon;
+
+/*
+ * NOTE: naming convention for macros:
+ *
+ * - SLAP_SOCK_* and SLAP_EVENT_* for public interface that deals
+ * with file descriptors and events respectively
+ *
+ * - SLAP_<type>_* for private interface; type by now is one of
+ * EPOLL, DEVPOLL, SELECT, KQUEUE
+ *
+ * private interface should not be used in the code.
+ */
+#ifdef HAVE_KQUEUE
+# define SLAP_EVENT_FNAME "kqueue"
+# define SLAP_EVENTS_ARE_INDEXED 0
+# define SLAP_EVENT_MAX(t) (2 * dtblsize) /* each fd can have a read & a write event */
+
+# define SLAP_EVENT_DECL \
+ static struct kevent* events = NULL
+
+# define SLAP_EVENT_INIT(t) do {\
+ if (!events) { \
+ events = ch_malloc(sizeof(*events) * SLAP_EVENT_MAX(t)); \
+ } \
+} while (0)
+
+# define SLAP_SOCK_INIT(t) do { \
+ int kq_i; \
+ size_t kq_nbytes; \
+ Debug(LDAP_DEBUG_ANY, "daemon: SLAP_SOCK_INIT: dtblsize=%d\n", dtblsize); \
+ slap_daemon[t].sd_nfds = 0; \
+ slap_daemon[t].sd_changeidx = 0; \
+ for (kq_i = 0; kq_i < 2; kq_i++) { \
+ struct kq_change* kqc = &slap_daemon[t].sd_kqc[kq_i]; \
+ kqc->sd_nchanges = 0; \
+ kqc->sd_maxchanges = 256; /* will grow as needed */ \
+ kq_nbytes = sizeof(*kqc->sd_changes) * kqc->sd_maxchanges; \
+ kqc->sd_changes = ch_calloc(1, kq_nbytes); \
+ } \
+ kq_nbytes = sizeof(*slap_daemon[t].sd_fdmodes) * dtblsize; \
+ slap_daemon[t].sd_fdmodes = ch_calloc(1, kq_nbytes); \
+ kq_nbytes = sizeof(*slap_daemon[t].sd_l) * dtblsize; \
+ slap_daemon[t].sd_l = ch_calloc(1, kq_nbytes); \
+ slap_daemon[t].sd_kq = kqueue(); \
+} while (0)
+
+/* a kqueue fd obtained before a fork isn't inherited by child process.
+ * reacquire it.
+ */
+# define SLAP_SOCK_INIT2() do { \
+ slap_daemon[0].sd_kq = kqueue(); \
+} while (0)
+
+# define SLAP_SOCK_DESTROY(t) do { \
+ int kq_i; \
+ if (slap_daemon[t].sd_kq > 0) { \
+ close(slap_daemon[t].sd_kq); \
+ slap_daemon[t].sd_kq = -1; \
+ } \
+ for (kq_i = 0; kq_i < 2; kq_i++) { \
+ if (slap_daemon[t].sd_kqc[kq_i].sd_changes != NULL) { \
+ ch_free(slap_daemon[t].sd_kqc[kq_i].sd_changes); \
+ slap_daemon[t].sd_kqc[kq_i].sd_changes = NULL; \
+ } \
+ slap_daemon[t].sd_kqc[kq_i].sd_nchanges = 0; \
+ slap_daemon[t].sd_kqc[kq_i].sd_maxchanges = 0; \
+ } \
+ if (slap_daemon[t].sd_l != NULL) { \
+ ch_free(slap_daemon[t].sd_l); \
+ slap_daemon[t].sd_l = NULL; \
+ } \
+ if (slap_daemon[t].sd_fdmodes != NULL) { \
+ ch_free(slap_daemon[t].sd_fdmodes); \
+ slap_daemon[t].sd_fdmodes = NULL; \
+ } \
+ slap_daemon[t].sd_nfds = 0; \
+} while (0)
+
+# define SLAP_KQUEUE_SOCK_ACTIVE 0x01
+# define SLAP_KQUEUE_SOCK_READ_ENABLED 0x02
+# define SLAP_KQUEUE_SOCK_WRITE_ENABLED 0x04
+
+# define SLAP_SOCK_IS_ACTIVE(t,s) (slap_daemon[t].sd_fdmodes[(s)] != 0)
+# define SLAP_SOCK_NOT_ACTIVE(t,s) (slap_daemon[t].sd_fdmodes[(s)] == 0)
+# define SLAP_SOCK_IS_READ(t,s) (slap_daemon[t].sd_fdmodes[(s)] & SLAP_KQUEUE_SOCK_READ_ENABLED)
+# define SLAP_SOCK_IS_WRITE(t,s) (slap_daemon[t].sd_fdmodes[(s)] & SLAP_KQUEUE_SOCK_WRITE_ENABLED)
+
+/*
+ * SLAP_SOCK_SET_* & SLAP_SOCK_CLR_* get called a _lot_. Since kevent()
+ * processes changes before it looks for events, batch up the changes which
+ * will get submitted the next time kevent() is called for events.
+ */
+
+# define SLAP_KQUEUE_CHANGE(t, s, filter, flag) do { \
+ /* If maxchanges is reached, have to realloc to make room for more. \
+ * Ideally we'd call kevent(), but the daemon thread could be sitting \
+ * in kevent() waiting for events. \
+ */ \
+ struct kq_change* kqc = &slap_daemon[t].sd_kqc[slap_daemon[t].sd_changeidx]; \
+ if (kqc->sd_nchanges == kqc->sd_maxchanges) { \
+ /* Don't want to do this very often. Double the size. */ \
+ size_t kq_nbytes; \
+ Debug(LDAP_DEBUG_CONNS, \
+ "daemon: SLAP_KQUEUE_CHANGE: increasing slap_daemon.sd_kqc[%d].maxchanges from %d to %d\n", \
+ slap_daemon[t].sd_changeidx, kqc->sd_maxchanges, 2*kqc->sd_maxchanges); \
+ kqc->sd_maxchanges += kqc->sd_maxchanges; \
+ kq_nbytes = sizeof(*kqc->sd_changes) * kqc->sd_maxchanges; \
+ kqc->sd_changes = ch_realloc(kqc->sd_changes, kq_nbytes); \
+ } \
+ EV_SET(&kqc->sd_changes[kqc->sd_nchanges++], \
+ (s), (filter), (flag), 0, 0, slap_daemon[t].sd_l[(s)]); \
+} while (0)
+
+# define SLAP_KQUEUE_SOCK_SET(t, s, filter, mode) do { \
+ if ((slap_daemon[t].sd_fdmodes[(s)] & (mode)) != (mode)) { \
+ slap_daemon[t].sd_fdmodes[(s)] |= (mode); \
+ SLAP_KQUEUE_CHANGE(t, (s), (filter), EV_ENABLE); \
+ } \
+} while (0)
+
+# define SLAP_KQUEUE_SOCK_CLR(t, s, filter, mode) do { \
+ if (slap_daemon[t].sd_fdmodes[(s)] & (mode)) { \
+ slap_daemon[t].sd_fdmodes[(s)] &= ~(mode); \
+ SLAP_KQUEUE_CHANGE(t, (s), (filter), EV_DISABLE); \
+ } \
+} while (0)
+
+# define SLAP_SOCK_SET_READ(t, s) SLAP_KQUEUE_SOCK_SET(t, (s), EVFILT_READ, SLAP_KQUEUE_SOCK_READ_ENABLED)
+# define SLAP_SOCK_SET_WRITE(t, s) SLAP_KQUEUE_SOCK_SET(t, (s), EVFILT_WRITE, SLAP_KQUEUE_SOCK_WRITE_ENABLED)
+# define SLAP_SOCK_CLR_READ(t, s) SLAP_KQUEUE_SOCK_CLR(t, (s), EVFILT_READ, SLAP_KQUEUE_SOCK_READ_ENABLED)
+# define SLAP_SOCK_CLR_WRITE(t, s) SLAP_KQUEUE_SOCK_CLR(t, (s), EVFILT_WRITE, SLAP_KQUEUE_SOCK_WRITE_ENABLED)
+
+/* kqueue doesn't need to do anything to clear the event. */
+# define SLAP_EVENT_CLR_READ(i) do {} while (0)
+# define SLAP_EVENT_CLR_WRITE(i) do {} while (0)
+
+# define SLAP_SOCK_ADD(t, s, l) do { \
+ assert( s < dtblsize ); \
+ slap_daemon[t].sd_l[(s)] = (l); \
+ slap_daemon[t].sd_fdmodes[(s)] = SLAP_KQUEUE_SOCK_ACTIVE | SLAP_KQUEUE_SOCK_READ_ENABLED; \
+ ++slap_daemon[t].sd_nfds; \
+ SLAP_KQUEUE_CHANGE(t, (s), EVFILT_READ, EV_ADD); \
+ SLAP_KQUEUE_CHANGE(t, (s), EVFILT_WRITE, EV_ADD | EV_DISABLE); \
+} while (0)
+
+# define SLAP_SOCK_DEL(t, s) do { \
+ SLAP_KQUEUE_CHANGE(t, (s), EVFILT_READ, EV_DELETE); \
+ SLAP_KQUEUE_CHANGE(t, (s), EVFILT_WRITE, EV_DELETE); \
+ slap_daemon[t].sd_l[(s)] = NULL; \
+ slap_daemon[t].sd_fdmodes[(s)] = 0; \
+ --slap_daemon[t].sd_nfds; \
+} while (0)
+
+# define SLAP_EVENT_FD(t, i) (events[(i)].ident)
+
+# define SLAP_EVENT_IS_READ(t, i) \
+ (events[(i)].filter == EVFILT_READ && SLAP_SOCK_IS_READ(t, SLAP_EVENT_FD(0, i)))
+
+# define SLAP_EVENT_IS_WRITE(t, i) \
+ (events[(i)].filter == EVFILT_WRITE && SLAP_SOCK_IS_WRITE(t, SLAP_EVENT_FD(0, i)))
+
+# define SLAP_EVENT_IS_LISTENER(t, i) \
+ (events[(i)].udata && SLAP_SOCK_IS_READ(t, SLAP_EVENT_FD(t, i)))
+
+# define SLAP_EVENT_LISTENER(t, i) ((Listener*)(events[(i)].udata))
+
+# define SLAP_EVENT_WAIT(t, tvp, nsp) do { \
+ struct timespec kq_ts; \
+ struct timespec* kq_tsp; \
+ int kq_idx; \
+ if (tvp) { \
+ TIMEVAL_TO_TIMESPEC((tvp), &kq_ts); \
+ kq_tsp = &kq_ts; \
+ } else { \
+ kq_tsp = NULL; \
+ } \
+ /* Save the change buffer index for use when the mutex is unlocked, \
+ * then switch the index so new changes go to the other buffer. \
+ */ \
+ ldap_pvt_thread_mutex_lock( &slap_daemon[t].sd_mutex ); \
+ kq_idx = slap_daemon[t].sd_changeidx; \
+ slap_daemon[t].sd_changeidx ^= 1; \
+ ldap_pvt_thread_mutex_unlock( &slap_daemon[t].sd_mutex ); \
+ *(nsp) = kevent(slap_daemon[t].sd_kq, \
+ slap_daemon[t].sd_kqc[kq_idx].sd_nchanges \
+ ? slap_daemon[t].sd_kqc[kq_idx].sd_changes : NULL, \
+ slap_daemon[t].sd_kqc[kq_idx].sd_nchanges, \
+ events, SLAP_EVENT_MAX(t), kq_tsp); \
+ slap_daemon[t].sd_kqc[kq_idx].sd_nchanges = 0; \
+} while(0)
+
+/*-------------------------------------------------------------------------------*/
+
+#elif defined(HAVE_EPOLL)
+/***************************************
+ * Use epoll infrastructure - epoll(4) *
+ ***************************************/
+# define SLAP_EVENT_FNAME "epoll"
+# define SLAP_EVENTS_ARE_INDEXED 0
+# define SLAP_EPOLL_SOCK_IX(t,s) (slap_daemon[t].sd_index[(s)])
+# define SLAP_EPOLL_SOCK_EP(t,s) (slap_daemon[t].sd_epolls[SLAP_EPOLL_SOCK_IX(t,s)])
+# define SLAP_EPOLL_SOCK_EV(t,s) (SLAP_EPOLL_SOCK_EP(t,s).events)
+# define SLAP_SOCK_IS_ACTIVE(t,s) (SLAP_EPOLL_SOCK_IX(t,s) != -1)
+# define SLAP_SOCK_NOT_ACTIVE(t,s) (SLAP_EPOLL_SOCK_IX(t,s) == -1)
+# define SLAP_EPOLL_SOCK_IS_SET(t,s, mode) (SLAP_EPOLL_SOCK_EV(t,s) & (mode))
+
+# define SLAP_SOCK_IS_READ(t,s) SLAP_EPOLL_SOCK_IS_SET(t,(s), EPOLLIN)
+# define SLAP_SOCK_IS_WRITE(t,s) SLAP_EPOLL_SOCK_IS_SET(t,(s), EPOLLOUT)
+
+# define SLAP_EPOLL_SOCK_SET(t,s, mode) do { \
+ if ( (SLAP_EPOLL_SOCK_EV(t,s) & (mode)) != (mode) ) { \
+ SLAP_EPOLL_SOCK_EV(t,s) |= (mode); \
+ epoll_ctl( slap_daemon[t].sd_epfd, EPOLL_CTL_MOD, (s), \
+ &SLAP_EPOLL_SOCK_EP(t,s) ); \
+ } \
+} while (0)
+
+# define SLAP_EPOLL_SOCK_CLR(t,s, mode) do { \
+ if ( (SLAP_EPOLL_SOCK_EV(t,s) & (mode)) ) { \
+ SLAP_EPOLL_SOCK_EV(t,s) &= ~(mode); \
+ epoll_ctl( slap_daemon[t].sd_epfd, EPOLL_CTL_MOD, s, \
+ &SLAP_EPOLL_SOCK_EP(t,s) ); \
+ } \
+} while (0)
+
+# define SLAP_SOCK_SET_READ(t,s) SLAP_EPOLL_SOCK_SET(t,s, EPOLLIN)
+# define SLAP_SOCK_SET_WRITE(t,s) SLAP_EPOLL_SOCK_SET(t,s, EPOLLOUT)
+
+# define SLAP_SOCK_CLR_READ(t,s) SLAP_EPOLL_SOCK_CLR(t,(s), EPOLLIN)
+# define SLAP_SOCK_CLR_WRITE(t,s) SLAP_EPOLL_SOCK_CLR(t,(s), EPOLLOUT)
+
+# define SLAP_SOCK_SET_SUSPEND(t,s) \
+ ( slap_daemon[t].sd_suspend[SLAP_EPOLL_SOCK_IX(t,s)] = 1 )
+# define SLAP_SOCK_CLR_SUSPEND(t,s) \
+ ( slap_daemon[t].sd_suspend[SLAP_EPOLL_SOCK_IX(t,s)] = 0 )
+# define SLAP_SOCK_IS_SUSPEND(t,s) \
+ ( slap_daemon[t].sd_suspend[SLAP_EPOLL_SOCK_IX(t,s)] == 1 )
+
+# define SLAP_EPOLL_EVENT_CLR(i, mode) (revents[(i)].events &= ~(mode))
+
+# define SLAP_EVENT_MAX(t) slap_daemon[t].sd_nfds
+
+/* If a Listener address is provided, store that as the epoll data.
+ * Otherwise, store the address of this socket's slot in the
+ * index array. If we can't do this add, the system is out of
+ * resources and we need to shutdown.
+ */
+# define SLAP_SOCK_ADD(t, s, l) do { \
+ int rc; \
+ SLAP_EPOLL_SOCK_IX(t,(s)) = slap_daemon[t].sd_nfds; \
+ SLAP_EPOLL_SOCK_EP(t,(s)).data.ptr = (l) ? (l) : (void *)(&SLAP_EPOLL_SOCK_IX(t,s)); \
+ SLAP_EPOLL_SOCK_EV(t,(s)) = EPOLLIN; \
+ rc = epoll_ctl(slap_daemon[t].sd_epfd, EPOLL_CTL_ADD, \
+ (s), &SLAP_EPOLL_SOCK_EP(t,(s))); \
+ if ( rc == 0 ) { \
+ slap_daemon[t].sd_nfds++; \
+ } else { \
+ int saved_errno = errno; \
+ Debug( LDAP_DEBUG_ANY, \
+ "daemon: epoll_ctl(ADD,fd=%d) failed, errno=%d, shutting down\n", \
+ s, saved_errno ); \
+ slapd_shutdown = 2; \
+ } \
+} while (0)
+
+# define SLAP_EPOLL_EV_LISTENER(t,ptr) \
+ (((int *)(ptr) >= slap_daemon[t].sd_index && \
+ (int *)(ptr) <= &slap_daemon[t].sd_index[dtblsize]) ? 0 : 1 )
+
+# define SLAP_EPOLL_EV_PTRFD(t,ptr) (SLAP_EPOLL_EV_LISTENER(t,ptr) ? \
+ ((Listener *)ptr)->sl_sd : \
+ (ber_socket_t) ((int *)(ptr) - slap_daemon[t].sd_index))
+
+# define SLAP_SOCK_DEL(t,s) do { \
+ int fd, rc, index = SLAP_EPOLL_SOCK_IX(t,(s)); \
+ if ( index < 0 ) break; \
+ rc = epoll_ctl(slap_daemon[t].sd_epfd, EPOLL_CTL_DEL, \
+ (s), &SLAP_EPOLL_SOCK_EP(t,(s))); \
+ slap_daemon[t].sd_epolls[index] = \
+ slap_daemon[t].sd_epolls[slap_daemon[t].sd_nfds-1]; \
+ fd = SLAP_EPOLL_EV_PTRFD(t,slap_daemon[t].sd_epolls[index].data.ptr); \
+ slap_daemon[t].sd_index[fd] = index; \
+ slap_daemon[t].sd_index[(s)] = -1; \
+ slap_daemon[t].sd_nfds--; \
+} while (0)
+
+# define SLAP_EVENT_CLR_READ(i) SLAP_EPOLL_EVENT_CLR((i), EPOLLIN)
+# define SLAP_EVENT_CLR_WRITE(i) SLAP_EPOLL_EVENT_CLR((i), EPOLLOUT)
+
+# define SLAP_EPOLL_EVENT_CHK(i, mode) (revents[(i)].events & mode)
+
+# define SLAP_EVENT_IS_READ(i) SLAP_EPOLL_EVENT_CHK((i), EPOLLIN)
+# define SLAP_EVENT_IS_WRITE(i) SLAP_EPOLL_EVENT_CHK((i), EPOLLOUT)
+# define SLAP_EVENT_IS_LISTENER(t,i) SLAP_EPOLL_EV_LISTENER(t,revents[(i)].data.ptr)
+# define SLAP_EVENT_LISTENER(t,i) ((Listener *)(revents[(i)].data.ptr))
+
+# define SLAP_EVENT_FD(t,i) SLAP_EPOLL_EV_PTRFD(t,revents[(i)].data.ptr)
+
+# define SLAP_SOCK_INIT(t) do { \
+ int j; \
+ slap_daemon[t].sd_epolls = ch_calloc(1, \
+ ( sizeof(struct epoll_event) * 2 \
+ + sizeof(int) ) * dtblsize * 2); \
+ slap_daemon[t].sd_index = (int *)&slap_daemon[t].sd_epolls[ 2 * dtblsize ]; \
+ slap_daemon[t].sd_epfd = epoll_create( dtblsize / slapd_daemon_threads ); \
+ for ( j = 0; j < dtblsize; j++ ) slap_daemon[t].sd_index[j] = -1; \
+} while (0)
+
+# define SLAP_SOCK_INIT2()
+
+# define SLAP_SOCK_DESTROY(t) do { \
+ if ( slap_daemon[t].sd_epolls != NULL ) { \
+ ch_free( slap_daemon[t].sd_epolls ); \
+ slap_daemon[t].sd_epolls = NULL; \
+ slap_daemon[t].sd_index = NULL; \
+ close( slap_daemon[t].sd_epfd ); \
+ } \
+} while ( 0 )
+
+# define SLAP_EVENT_DECL struct epoll_event *revents
+
+# define SLAP_EVENT_INIT(t) do { \
+ revents = slap_daemon[t].sd_epolls + dtblsize; \
+} while (0)
+
+# define SLAP_EVENT_WAIT(t, tvp, nsp) do { \
+ *(nsp) = epoll_wait( slap_daemon[t].sd_epfd, revents, \
+ dtblsize, (tvp) ? ((tvp)->tv_sec * 1000 + (tvp)->tv_usec / 1000) : -1 ); \
+} while (0)
+
+#elif defined(SLAP_X_DEVPOLL) && defined(HAVE_DEVPOLL)
+
+/*************************************************************
+ * Use Solaris' (>= 2.7) /dev/poll infrastructure - poll(7d) *
+ *************************************************************/
+# define SLAP_EVENT_FNAME "/dev/poll"
+# define SLAP_EVENTS_ARE_INDEXED 0
+/*
+ * - sd_index is used much like with epoll()
+ * - sd_l is maintained as an array containing the address
+ * of the listener; the index is the fd itself
+ * - sd_pollfd is used to keep track of what data has been
+ * registered in /dev/poll
+ */
+# define SLAP_DEVPOLL_SOCK_IX(t,s) (slap_daemon[t].sd_index[(s)])
+# define SLAP_DEVPOLL_SOCK_LX(t,s) (slap_daemon[t].sd_l[(s)])
+# define SLAP_DEVPOLL_SOCK_EP(t,s) (slap_daemon[t].sd_pollfd[SLAP_DEVPOLL_SOCK_IX(t,(s))])
+# define SLAP_DEVPOLL_SOCK_FD(t,s) (SLAP_DEVPOLL_SOCK_EP(t,(s)).fd)
+# define SLAP_DEVPOLL_SOCK_EV(t,s) (SLAP_DEVPOLL_SOCK_EP(t,(s)).events)
+# define SLAP_SOCK_IS_ACTIVE(t,s) (SLAP_DEVPOLL_SOCK_IX(t,(s)) != -1)
+# define SLAP_SOCK_NOT_ACTIVE(t,s) (SLAP_DEVPOLL_SOCK_IX(t,(s)) == -1)
+# define SLAP_SOCK_IS_SET(t,s, mode) (SLAP_DEVPOLL_SOCK_EV(t,(s)) & (mode))
+
+# define SLAP_SOCK_IS_READ(t,s) SLAP_SOCK_IS_SET(t,(s), POLLIN)
+# define SLAP_SOCK_IS_WRITE(t,s) SLAP_SOCK_IS_SET(t,(s), POLLOUT)
+
+/* as far as I understand, any time we need to communicate with the kernel
+ * about the number and/or properties of a file descriptor we need it to
+ * wait for, we have to rewrite the whole set */
+# define SLAP_DEVPOLL_WRITE_POLLFD(t,s, pfd, n, what, shdn) do { \
+ int rc; \
+ size_t size = (n) * sizeof( struct pollfd ); \
+ /* FIXME: use pwrite? */ \
+ rc = write( slap_daemon[t].sd_dpfd, (pfd), size ); \
+ if ( rc != size ) { \
+ int saved_errno = errno; \
+ Debug( LDAP_DEBUG_ANY, "daemon: " SLAP_EVENT_FNAME ": " \
+ "%s fd=%d failed errno=%d\n", \
+ (what), (s), saved_errno ); \
+ if ( (shdn) ) { \
+ slapd_shutdown = 2; \
+ } \
+ } \
+} while (0)
+
+# define SLAP_DEVPOLL_SOCK_SET(t,s, mode) do { \
+ Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_SET_%s(%d)=%d\n", \
+ (mode) == POLLIN ? "READ" : "WRITE", (s), \
+ ( (SLAP_DEVPOLL_SOCK_EV(t,(s)) & (mode)) != (mode) ) ); \
+ if ( (SLAP_DEVPOLL_SOCK_EV(t,(s)) & (mode)) != (mode) ) { \
+ struct pollfd pfd; \
+ SLAP_DEVPOLL_SOCK_EV(t,(s)) |= (mode); \
+ pfd.fd = SLAP_DEVPOLL_SOCK_FD(t,(s)); \
+ pfd.events = /* (mode) */ SLAP_DEVPOLL_SOCK_EV(t,(s)); \
+ SLAP_DEVPOLL_WRITE_POLLFD(t,(s), &pfd, 1, "SET", 0); \
+ } \
+} while (0)
+
+# define SLAP_DEVPOLL_SOCK_CLR(t,s, mode) do { \
+ Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_CLR_%s(%d)=%d\n", \
+ (mode) == POLLIN ? "READ" : "WRITE", (s), \
+ ( (SLAP_DEVPOLL_SOCK_EV(t,(s)) & (mode)) == (mode) ) ); \
+ if ((SLAP_DEVPOLL_SOCK_EV(t,(s)) & (mode)) == (mode) ) { \
+ struct pollfd pfd[2]; \
+ SLAP_DEVPOLL_SOCK_EV(t,(s)) &= ~(mode); \
+ pfd[0].fd = SLAP_DEVPOLL_SOCK_FD(t,(s)); \
+ pfd[0].events = POLLREMOVE; \
+ pfd[1] = SLAP_DEVPOLL_SOCK_EP(t,(s)); \
+ SLAP_DEVPOLL_WRITE_POLLFD(t,(s), &pfd[0], 2, "CLR", 0); \
+ } \
+} while (0)
+
+# define SLAP_SOCK_SET_READ(t,s) SLAP_DEVPOLL_SOCK_SET(t,s, POLLIN)
+# define SLAP_SOCK_SET_WRITE(t,s) SLAP_DEVPOLL_SOCK_SET(t,s, POLLOUT)
+
+# define SLAP_SOCK_CLR_READ(t,s) SLAP_DEVPOLL_SOCK_CLR(t,(s), POLLIN)
+# define SLAP_SOCK_CLR_WRITE(t,s) SLAP_DEVPOLL_SOCK_CLR(t,(s), POLLOUT)
+
+# define SLAP_SOCK_SET_SUSPEND(t,s) \
+ ( slap_daemon[t].sd_suspend[SLAP_DEVPOLL_SOCK_IX(t,(s))] = 1 )
+# define SLAP_SOCK_CLR_SUSPEND(t,s) \
+ ( slap_daemon[t].sd_suspend[SLAP_DEVPOLL_SOCK_IX(t,(s))] = 0 )
+# define SLAP_SOCK_IS_SUSPEND(t,s) \
+ ( slap_daemon[t].sd_suspend[SLAP_DEVPOLL_SOCK_IX(t,(s))] == 1 )
+
+# define SLAP_DEVPOLL_EVENT_CLR(i, mode) (revents[(i)].events &= ~(mode))
+
+# define SLAP_EVENT_MAX(t) slap_daemon[t].sd_nfds
+
+/* If a Listener address is provided, store that in the sd_l array.
+ * If we can't do this add, the system is out of resources and we
+ * need to shutdown.
+ */
+# define SLAP_SOCK_ADD(t, s, l) do { \
+ Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_ADD(%d, %p)\n", (s), (l) ); \
+ SLAP_DEVPOLL_SOCK_IX(t,(s)) = slap_daemon[t].sd_nfds; \
+ SLAP_DEVPOLL_SOCK_LX(t,(s)) = (l); \
+ SLAP_DEVPOLL_SOCK_FD(t,(s)) = (s); \
+ SLAP_DEVPOLL_SOCK_EV(t,(s)) = POLLIN; \
+ SLAP_DEVPOLL_WRITE_POLLFD(t,(s), &SLAP_DEVPOLL_SOCK_EP(t, (s)), 1, "ADD", 1); \
+ slap_daemon[t].sd_nfds++; \
+} while (0)
+
+# define SLAP_DEVPOLL_EV_LISTENER(ptr) ((ptr) != NULL)
+
+# define SLAP_SOCK_DEL(t,s) do { \
+ int fd, index = SLAP_DEVPOLL_SOCK_IX(t,(s)); \
+ Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_DEL(%d)\n", (s) ); \
+ if ( index < 0 ) break; \
+ if ( index < slap_daemon[t].sd_nfds - 1 ) { \
+ struct pollfd pfd = slap_daemon[t].sd_pollfd[index]; \
+ fd = slap_daemon[t].sd_pollfd[slap_daemon[t].sd_nfds - 1].fd; \
+ slap_daemon[t].sd_pollfd[index] = slap_daemon[t].sd_pollfd[slap_daemon[t].sd_nfds - 1]; \
+ slap_daemon[t].sd_pollfd[slap_daemon[t].sd_nfds - 1] = pfd; \
+ slap_daemon[t].sd_index[fd] = index; \
+ } \
+ slap_daemon[t].sd_index[(s)] = -1; \
+ slap_daemon[t].sd_pollfd[slap_daemon[t].sd_nfds - 1].events = POLLREMOVE; \
+ SLAP_DEVPOLL_WRITE_POLLFD(t,(s), &slap_daemon[t].sd_pollfd[slap_daemon[t].sd_nfds - 1], 1, "DEL", 0); \
+ slap_daemon[t].sd_pollfd[slap_daemon[t].sd_nfds - 1].events = 0; \
+ slap_daemon[t].sd_nfds--; \
+} while (0)
+
+# define SLAP_EVENT_CLR_READ(i) SLAP_DEVPOLL_EVENT_CLR((i), POLLIN)
+# define SLAP_EVENT_CLR_WRITE(i) SLAP_DEVPOLL_EVENT_CLR((i), POLLOUT)
+
+# define SLAP_DEVPOLL_EVENT_CHK(i, mode) (revents[(i)].events & (mode))
+
+# define SLAP_EVENT_FD(t,i) (revents[(i)].fd)
+
+# define SLAP_EVENT_IS_READ(i) SLAP_DEVPOLL_EVENT_CHK((i), POLLIN)
+# define SLAP_EVENT_IS_WRITE(i) SLAP_DEVPOLL_EVENT_CHK((i), POLLOUT)
+# define SLAP_EVENT_IS_LISTENER(t,i) SLAP_DEVPOLL_EV_LISTENER(SLAP_DEVPOLL_SOCK_LX(t, SLAP_EVENT_FD(t,(i))))
+# define SLAP_EVENT_LISTENER(t,i) SLAP_DEVPOLL_SOCK_LX(t, SLAP_EVENT_FD(t,(i)))
+
+# define SLAP_SOCK_DESTROY(t) do { \
+ if ( slap_daemon[t].sd_pollfd != NULL ) { \
+ ch_free( slap_daemon[t].sd_pollfd ); \
+ slap_daemon[t].sd_pollfd = NULL; \
+ slap_daemon[t].sd_index = NULL; \
+ slap_daemon[t].sd_l = NULL; \
+ close( slap_daemon[t].sd_dpfd ); \
+ } \
+} while ( 0 )
+
+# define SLAP_SOCK_INIT(t) do { \
+ slap_daemon[t].sd_pollfd = ch_calloc( 1, \
+ ( sizeof(struct pollfd) * 2 \
+ + sizeof( int ) \
+ + sizeof( Listener * ) ) * dtblsize ); \
+ slap_daemon[t].sd_index = (int *)&slap_daemon[t].sd_pollfd[ 2 * dtblsize ]; \
+ slap_daemon[t].sd_l = (Listener **)&slap_daemon[t].sd_index[ dtblsize ]; \
+ slap_daemon[t].sd_dpfd = open( SLAP_EVENT_FNAME, O_RDWR ); \
+ if ( slap_daemon[t].sd_dpfd == -1 ) { \
+ int saved_errno = errno; \
+ Debug( LDAP_DEBUG_ANY, "daemon: " SLAP_EVENT_FNAME ": " \
+ "open(\"" SLAP_EVENT_FNAME "\") failed errno=%d\n", \
+ saved_errno ); \
+ SLAP_SOCK_DESTROY(t); \
+ return -1; \
+ } \
+ for ( i = 0; i < dtblsize; i++ ) { \
+ slap_daemon[t].sd_pollfd[i].fd = -1; \
+ slap_daemon[t].sd_index[i] = -1; \
+ } \
+} while (0)
+
+# define SLAP_SOCK_INIT2()
+
+# define SLAP_EVENT_DECL struct pollfd *revents
+
+# define SLAP_EVENT_INIT(t) do { \
+ revents = &slap_daemon[t].sd_pollfd[ dtblsize ]; \
+} while (0)
+
+# define SLAP_EVENT_WAIT(t, tvp, nsp) do { \
+ struct dvpoll sd_dvpoll; \
+ sd_dvpoll.dp_timeout = (tvp) ? ((tvp)->tv_sec * 1000 + (tvp)->tv_usec / 1000) : -1; \
+ sd_dvpoll.dp_nfds = dtblsize; \
+ sd_dvpoll.dp_fds = revents; \
+ *(nsp) = ioctl( slap_daemon[t].sd_dpfd, DP_POLL, &sd_dvpoll ); \
+} while (0)
+
+#else /* ! kqueue && ! epoll && ! /dev/poll */
+# ifdef HAVE_WINSOCK
+# define SLAP_EVENT_FNAME "WSselect"
+/* Winsock provides a "select" function but its fd_sets are
+ * actually arrays of sockets. Since these sockets are handles
+ * and not a contiguous range of small integers, we manage our
+ * own "fd" table of socket handles and use their indices as
+ * descriptors.
+ *
+ * All of our listener/connection structures use fds; the actual
+ * I/O functions use sockets. The SLAP_FD2SOCK macro in proto-slap.h
+ * handles the mapping.
+ *
+ * Despite the mapping overhead, this is about 45% more efficient
+ * than just using Winsock's select and FD_ISSET directly.
+ *
+ * Unfortunately Winsock's select implementation doesn't scale well
+ * as the number of connections increases. This probably needs to be
+ * rewritten to use the Winsock overlapped/asynchronous I/O functions.
+ */
+# define SLAP_EVENTS_ARE_INDEXED 1
+# define SLAP_EVENT_DECL fd_set readfds, writefds; char *rflags
+# define SLAP_EVENT_INIT(t) do { \
+ int i; \
+ FD_ZERO( &readfds ); \
+ FD_ZERO( &writefds ); \
+ rflags = slap_daemon[t].sd_rflags; \
+ memset( rflags, 0, slap_daemon[t].sd_nfds ); \
+ for ( i=0; i<slap_daemon[t].sd_nfds; i++ ) { \
+ if ( slap_daemon[t].sd_flags[i] & SD_READ ) \
+ FD_SET( slapd_ws_sockets[i], &readfds );\
+ if ( slap_daemon[t].sd_flags[i] & SD_WRITE ) \
+ FD_SET( slapd_ws_sockets[i], &writefds ); \
+ } } while ( 0 )
+
+# define SLAP_EVENT_MAX(t) slap_daemon[t].sd_nfds
+
+# define SLAP_EVENT_WAIT(t, tvp, nsp) do { \
+ int i; \
+ *(nsp) = select( SLAP_EVENT_MAX(t), &readfds, \
+ nwriters > 0 ? &writefds : NULL, NULL, (tvp) ); \
+ for ( i=0; i<readfds.fd_count; i++) { \
+ int fd = slapd_sock2fd(readfds.fd_array[i]); \
+ if ( fd >= 0 ) { \
+ slap_daemon[t].sd_rflags[fd] = SD_READ; \
+ if ( fd >= *(nsp)) *(nsp) = fd+1; \
+ } \
+ } \
+ for ( i=0; i<writefds.fd_count; i++) { \
+ int fd = slapd_sock2fd(writefds.fd_array[i]); \
+ if ( fd >= 0 ) { \
+ slap_daemon[t].sd_rflags[fd] = SD_WRITE; \
+ if ( fd >= *(nsp)) *(nsp) = fd+1; \
+ } \
+ } \
+} while (0)
+
+# define SLAP_EVENT_IS_READ(fd) (rflags[fd] & SD_READ)
+# define SLAP_EVENT_IS_WRITE(fd) (rflags[fd] & SD_WRITE)
+
+# define SLAP_EVENT_CLR_READ(fd) rflags[fd] &= ~SD_READ
+# define SLAP_EVENT_CLR_WRITE(fd) rflags[fd] &= ~SD_WRITE
+
+# define SLAP_SOCK_INIT(t) do { \
+ if (!t) { \
+ ldap_pvt_thread_mutex_init( &slapd_ws_mutex ); \
+ slapd_ws_sockets = ch_malloc( dtblsize * ( sizeof(SOCKET) + 2)); \
+ memset( slapd_ws_sockets, -1, dtblsize * sizeof(SOCKET) ); \
+ } \
+ slap_daemon[t].sd_flags = (char *)(slapd_ws_sockets + dtblsize); \
+ slap_daemon[t].sd_rflags = slap_daemon[t].sd_flags + dtblsize; \
+ memset( slap_daemon[t].sd_flags, 0, dtblsize ); \
+ slapd_ws_sockets[t*2] = wake_sds[t][0]; \
+ slapd_ws_sockets[t*2+1] = wake_sds[t][1]; \
+ wake_sds[t][0] = t*2; \
+ wake_sds[t][1] = t*2+1; \
+ slap_daemon[t].sd_nfds = t*2 + 2; \
+ } while ( 0 )
+
+# define SLAP_SOCK_INIT2()
+
+# define SLAP_SOCK_DESTROY(t) do { \
+ ch_free( slapd_ws_sockets ); slapd_ws_sockets = NULL; \
+ slap_daemon[t].sd_flags = NULL; \
+ slap_daemon[t].sd_rflags = NULL; \
+ ldap_pvt_thread_mutex_destroy( &slapd_ws_mutex ); \
+ } while ( 0 )
+
+# define SLAP_SOCK_IS_ACTIVE(t,fd) ( slap_daemon[t].sd_flags[fd] & SD_ACTIVE )
+# define SLAP_SOCK_IS_READ(t,fd) ( slap_daemon[t].sd_flags[fd] & SD_READ )
+# define SLAP_SOCK_IS_WRITE(t,fd) ( slap_daemon[t].sd_flags[fd] & SD_WRITE )
+# define SLAP_SOCK_NOT_ACTIVE(t,fd) (!slap_daemon[t].sd_flags[fd])
+
+# define SLAP_SOCK_SET_READ(t,fd) ( slap_daemon[t].sd_flags[fd] |= SD_READ )
+# define SLAP_SOCK_SET_WRITE(t,fd) ( slap_daemon[t].sd_flags[fd] |= SD_WRITE )
+
+# define SLAP_SELECT_ADDTEST(t,s) do { \
+ if ((s) >= slap_daemon[t].sd_nfds) slap_daemon[t].sd_nfds = (s)+1; \
+} while (0)
+
+# define SLAP_SOCK_CLR_READ(t,fd) ( slap_daemon[t].sd_flags[fd] &= ~SD_READ )
+# define SLAP_SOCK_CLR_WRITE(t,fd) ( slap_daemon[t].sd_flags[fd] &= ~SD_WRITE )
+
+# define SLAP_SOCK_ADD(t,s, l) do { \
+ SLAP_SELECT_ADDTEST(t,(s)); \
+ slap_daemon[t].sd_flags[s] = SD_ACTIVE|SD_READ; \
+} while ( 0 )
+
+# define SLAP_SOCK_DEL(t,s) do { \
+ slap_daemon[t].sd_flags[s] = 0; \
+ slapd_sockdel( s ); \
+} while ( 0 )
+
+# else /* !HAVE_WINSOCK */
+
+/**************************************
+ * Use select system call - select(2) *
+ **************************************/
+# define SLAP_EVENT_FNAME "select"
+/* select */
+# define SLAP_EVENTS_ARE_INDEXED 1
+# define SLAP_EVENT_DECL fd_set readfds, writefds
+
+# define SLAP_EVENT_INIT(t) do { \
+ AC_MEMCPY( &readfds, &slap_daemon[t].sd_readers, sizeof(fd_set) ); \
+ if ( nwriters ) { \
+ AC_MEMCPY( &writefds, &slap_daemon[t].sd_writers, sizeof(fd_set) ); \
+ } else { \
+ FD_ZERO( &writefds ); \
+ } \
+} while (0)
+
+# ifdef FD_SETSIZE
+# define SLAP_SELECT_CHK_SETSIZE do { \
+ if (dtblsize > FD_SETSIZE) dtblsize = FD_SETSIZE; \
+} while (0)
+# else /* ! FD_SETSIZE */
+# define SLAP_SELECT_CHK_SETSIZE do { ; } while (0)
+# endif /* ! FD_SETSIZE */
+
+# define SLAP_SOCK_INIT(t) do { \
+ SLAP_SELECT_CHK_SETSIZE; \
+ FD_ZERO(&slap_daemon[t].sd_actives); \
+ FD_ZERO(&slap_daemon[t].sd_readers); \
+ FD_ZERO(&slap_daemon[t].sd_writers); \
+} while (0)
+
+# define SLAP_SOCK_INIT2()
+
+# define SLAP_SOCK_DESTROY(t)
+
+# define SLAP_SOCK_IS_ACTIVE(t,fd) FD_ISSET((fd), &slap_daemon[t].sd_actives)
+# define SLAP_SOCK_IS_READ(t,fd) FD_ISSET((fd), &slap_daemon[t].sd_readers)
+# define SLAP_SOCK_IS_WRITE(t,fd) FD_ISSET((fd), &slap_daemon[t].sd_writers)
+
+# define SLAP_SOCK_NOT_ACTIVE(t,fd) (!SLAP_SOCK_IS_ACTIVE(t,fd) && \
+ !SLAP_SOCK_IS_READ(t,fd) && !SLAP_SOCK_IS_WRITE(t,fd))
+
+# define SLAP_SOCK_SET_READ(t,fd) FD_SET((fd), &slap_daemon[t].sd_readers)
+# define SLAP_SOCK_SET_WRITE(t,fd) FD_SET((fd), &slap_daemon[t].sd_writers)
+
+# define SLAP_EVENT_MAX(t) slap_daemon[t].sd_nfds
+# define SLAP_SELECT_ADDTEST(t,s) do { \
+ if ((s) >= slap_daemon[t].sd_nfds) slap_daemon[t].sd_nfds = (s)+1; \
+} while (0)
+
+# define SLAP_SOCK_CLR_READ(t,fd) FD_CLR((fd), &slap_daemon[t].sd_readers)
+# define SLAP_SOCK_CLR_WRITE(t,fd) FD_CLR((fd), &slap_daemon[t].sd_writers)
+
+# define SLAP_SOCK_ADD(t,s, l) do { \
+ SLAP_SELECT_ADDTEST(t,(s)); \
+ FD_SET((s), &slap_daemon[t].sd_actives); \
+ FD_SET((s), &slap_daemon[t].sd_readers); \
+} while (0)
+
+# define SLAP_SOCK_DEL(t,s) do { \
+ FD_CLR((s), &slap_daemon[t].sd_actives); \
+ FD_CLR((s), &slap_daemon[t].sd_readers); \
+ FD_CLR((s), &slap_daemon[t].sd_writers); \
+} while (0)
+
+# define SLAP_EVENT_IS_READ(fd) FD_ISSET((fd), &readfds)
+# define SLAP_EVENT_IS_WRITE(fd) FD_ISSET((fd), &writefds)
+
+# define SLAP_EVENT_CLR_READ(fd) FD_CLR((fd), &readfds)
+# define SLAP_EVENT_CLR_WRITE(fd) FD_CLR((fd), &writefds)
+
+# define SLAP_EVENT_WAIT(t, tvp, nsp) do { \
+ *(nsp) = select( SLAP_EVENT_MAX(t), &readfds, \
+ nwriters > 0 ? &writefds : NULL, NULL, (tvp) ); \
+} while (0)
+# endif /* !HAVE_WINSOCK */
+#endif /* ! kqueue && ! epoll && ! /dev/poll */
+
+#ifdef HAVE_SLP
+/*
+ * SLP related functions
+ */
+#include <slp.h>
+
+#define LDAP_SRVTYPE_PREFIX "service:ldap://"
+#define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
+static char** slapd_srvurls = NULL;
+static SLPHandle slapd_hslp = 0;
+int slapd_register_slp = 0;
+const char *slapd_slp_attrs = NULL;
+
+static SLPError slapd_slp_cookie;
+
+static void
+slapd_slp_init( const char* urls )
+{
+ int i;
+ SLPError err;
+
+ slapd_srvurls = ldap_str2charray( urls, " " );
+
+ if ( slapd_srvurls == NULL ) return;
+
+ /* find and expand INADDR_ANY URLs */
+ for ( i = 0; slapd_srvurls[i] != NULL; i++ ) {
+ if ( strcmp( slapd_srvurls[i], "ldap:///" ) == 0 ) {
+ slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
+ global_host_bv.bv_len +
+ sizeof( LDAP_SRVTYPE_PREFIX ) );
+ strcpy( lutil_strcopy(slapd_srvurls[i],
+ LDAP_SRVTYPE_PREFIX ), global_host_bv.bv_val );
+ } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0 ) {
+ slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
+ global_host_bv.bv_len +
+ sizeof( LDAPS_SRVTYPE_PREFIX ) );
+ strcpy( lutil_strcopy(slapd_srvurls[i],
+ LDAPS_SRVTYPE_PREFIX ), global_host_bv.bv_val );
+ }
+ }
+
+ /* open the SLP handle */
+ err = SLPOpen( "en", 0, &slapd_hslp );
+
+ if ( err != SLP_OK ) {
+ Debug( LDAP_DEBUG_CONNS, "daemon: SLPOpen() failed with %ld\n",
+ (long)err );
+ }
+}
+
+static void
+slapd_slp_deinit( void )
+{
+ if ( slapd_srvurls == NULL ) return;
+
+ ldap_charray_free( slapd_srvurls );
+ slapd_srvurls = NULL;
+
+ /* close the SLP handle */
+ SLPClose( slapd_hslp );
+}
+
+static void
+slapd_slp_regreport(
+ SLPHandle hslp,
+ SLPError errcode,
+ void *cookie )
+{
+ /* return the error code in the cookie */
+ *(SLPError*)cookie = errcode;
+}
+
+static void
+slapd_slp_reg()
+{
+ int i;
+ SLPError err;
+
+ if ( slapd_srvurls == NULL ) return;
+
+ for ( i = 0; slapd_srvurls[i] != NULL; i++ ) {
+ if ( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
+ sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
+ strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
+ sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
+ {
+ err = SLPReg( slapd_hslp,
+ slapd_srvurls[i],
+ SLP_LIFETIME_MAXIMUM,
+ "ldap",
+ (slapd_slp_attrs) ? slapd_slp_attrs : "",
+ SLP_TRUE,
+ slapd_slp_regreport,
+ &slapd_slp_cookie );
+
+ if ( err != SLP_OK || slapd_slp_cookie != SLP_OK ) {
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: SLPReg(%s) failed with %ld, cookie = %ld\n",
+ slapd_srvurls[i], (long)err, (long)slapd_slp_cookie );
+ }
+ }
+ }
+}
+
+static void
+slapd_slp_dereg( void )
+{
+ int i;
+ SLPError err;
+
+ if ( slapd_srvurls == NULL ) return;
+
+ for ( i = 0; slapd_srvurls[i] != NULL; i++ ) {
+ err = SLPDereg( slapd_hslp,
+ slapd_srvurls[i],
+ slapd_slp_regreport,
+ &slapd_slp_cookie );
+
+ if ( err != SLP_OK || slapd_slp_cookie != SLP_OK ) {
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: SLPDereg(%s) failed with %ld, cookie = %ld\n",
+ slapd_srvurls[i], (long)err, (long)slapd_slp_cookie );
+ }
+ }
+}
+#endif /* HAVE_SLP */
+
+#ifdef HAVE_WINSOCK
+/* Manage the descriptor to socket table */
+ber_socket_t
+slapd_socknew( ber_socket_t s )
+{
+ ber_socket_t i;
+ ldap_pvt_thread_mutex_lock( &slapd_ws_mutex );
+ for ( i = 0; i < dtblsize && slapd_ws_sockets[i] != INVALID_SOCKET; i++ );
+ if ( i == dtblsize ) {
+ WSASetLastError( WSAEMFILE );
+ } else {
+ slapd_ws_sockets[i] = s;
+ }
+ ldap_pvt_thread_mutex_unlock( &slapd_ws_mutex );
+ return i;
+}
+
+void
+slapd_sockdel( ber_socket_t s )
+{
+ ldap_pvt_thread_mutex_lock( &slapd_ws_mutex );
+ slapd_ws_sockets[s] = INVALID_SOCKET;
+ ldap_pvt_thread_mutex_unlock( &slapd_ws_mutex );
+}
+
+ber_socket_t
+slapd_sock2fd( ber_socket_t s )
+{
+ ber_socket_t i;
+ for ( i=0; i<dtblsize && slapd_ws_sockets[i] != s; i++);
+ if ( i == dtblsize )
+ i = -1;
+ return i;
+}
+#endif
+
+#ifdef DEBUG_CLOSE
+/* Was used to find a bug causing slapd's descriptors to be closed
+ * out from under it. Tracked it down to a long-standing (from 2009)
+ * bug in Heimdal https://github.com/heimdal/heimdal/issues/431 .
+ * Leaving this here for future use, if necessary.
+ */
+#include <dlfcn.h>
+#ifndef RTLD_NEXT
+#define RTLD_NEXT (void *)-1L
+#endif
+static char *newconns;
+typedef int (closefunc)(int fd);
+static closefunc *close_ptr;
+int close( int s )
+{
+ if (newconns) {
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: close(%d)\n", s );
+ if (s >= 0 && s < dtblsize && newconns[s])
+ assert(newconns[s] == 2);
+ }
+ return close_ptr ? close_ptr(s) : -1;
+}
+
+void slapd_debug_close()
+{
+ if (dtblsize)
+ newconns = ch_calloc(1, dtblsize);
+ close_ptr = dlsym(RTLD_NEXT, "close");
+}
+
+void slapd_set_close(int fd)
+{
+ newconns[fd] = 3;
+}
+#define SETUP_CLOSE() slapd_debug_close()
+#define SET_CLOSE(fd) slapd_set_close(fd)
+#define CLR_CLOSE(fd) if (newconns[fd]) newconns[fd]--
+#else
+#define SETUP_CLOSE(fd)
+#define SET_CLOSE(fd)
+#define CLR_CLOSE(fd)
+#endif
+
+/*
+ * 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. The underlying event handler may record the Listener
+ * argument to differentiate Listener's from real sessions.
+ */
+static void
+slapd_add( ber_socket_t s, int isactive, Listener *sl, int id )
+{
+ if (id < 0)
+ id = DAEMON_ID(s);
+ ldap_pvt_thread_mutex_lock( &slap_daemon[id].sd_mutex );
+
+ assert( SLAP_SOCK_NOT_ACTIVE(id, s) );
+
+ if ( isactive ) slap_daemon[id].sd_nactives++;
+
+ SLAP_SOCK_ADD(id, s, sl);
+
+ Debug( LDAP_DEBUG_CONNS, "daemon: added %ldr%s listener=%p\n",
+ (long) s, isactive ? " (active)" : "", (void *)sl );
+
+ ldap_pvt_thread_mutex_unlock( &slap_daemon[id].sd_mutex );
+
+ WAKE_LISTENER(id,1);
+}
+
+/*
+ * Remove the descriptor from daemon control
+ */
+void
+slapd_remove(
+ ber_socket_t s,
+ Sockbuf *sb,
+ int wasactive,
+ int wake,
+ int locked )
+{
+ int waswriter;
+ int wasreader;
+ int id = DAEMON_ID(s);
+
+ if ( !locked )
+ ldap_pvt_thread_mutex_lock( &slap_daemon[id].sd_mutex );
+
+ assert( SLAP_SOCK_IS_ACTIVE( id, s ));
+
+ if ( wasactive ) slap_daemon[id].sd_nactives--;
+
+ waswriter = SLAP_SOCK_IS_WRITE(id, s);
+ wasreader = SLAP_SOCK_IS_READ(id, s);
+
+ Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
+ (long) s,
+ wasreader ? "r" : "",
+ waswriter ? "w" : "" );
+
+ if ( waswriter ) slap_daemon[id].sd_nwriters--;
+
+ SLAP_SOCK_DEL(id, s);
+ CLR_CLOSE(s);
+
+ if ( sb )
+ ber_sockbuf_free(sb);
+
+ /* 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.
+ */
+ ldap_pvt_thread_mutex_lock( &emfile_mutex );
+ if ( emfile && listening ) {
+ int i;
+ for ( i = 0; slap_listeners[i] != NULL; i++ ) {
+ Listener *lr = slap_listeners[i];
+
+ if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
+ if ( lr->sl_sd == s ) continue;
+ if ( lr->sl_mute ) {
+ lr->sl_mute = 0;
+ emfile--;
+ if ( DAEMON_ID(lr->sl_sd) != id )
+ WAKE_LISTENER(DAEMON_ID(lr->sl_sd), wake);
+ 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( &emfile_mutex );
+ ldap_pvt_thread_mutex_unlock( &slap_daemon[id].sd_mutex );
+ WAKE_LISTENER(id, wake || slapd_gentle_shutdown == 2);
+}
+
+void
+slapd_clr_write( ber_socket_t s, int wake )
+{
+ int id = DAEMON_ID(s);
+ ldap_pvt_thread_mutex_lock( &slap_daemon[id].sd_mutex );
+
+ if ( SLAP_SOCK_IS_WRITE( id, s )) {
+ assert( SLAP_SOCK_IS_ACTIVE( id, s ));
+
+ SLAP_SOCK_CLR_WRITE( id, s );
+ slap_daemon[id].sd_nwriters--;
+ }
+
+ ldap_pvt_thread_mutex_unlock( &slap_daemon[id].sd_mutex );
+ WAKE_LISTENER(id,wake);
+}
+
+void
+slapd_set_write( ber_socket_t s, int wake )
+{
+ int id = DAEMON_ID(s);
+ ldap_pvt_thread_mutex_lock( &slap_daemon[id].sd_mutex );
+
+ assert( SLAP_SOCK_IS_ACTIVE( id, s ));
+
+ if ( !SLAP_SOCK_IS_WRITE( id, s )) {
+ SLAP_SOCK_SET_WRITE( id, s );
+ slap_daemon[id].sd_nwriters++;
+ }
+
+ ldap_pvt_thread_mutex_unlock( &slap_daemon[id].sd_mutex );
+ WAKE_LISTENER(id,wake);
+}
+
+int
+slapd_clr_read( ber_socket_t s, int wake )
+{
+ int rc = 1;
+ int id = DAEMON_ID(s);
+ ldap_pvt_thread_mutex_lock( &slap_daemon[id].sd_mutex );
+
+ if ( SLAP_SOCK_IS_ACTIVE( id, s )) {
+ SLAP_SOCK_CLR_READ( id, s );
+ rc = 0;
+ }
+ ldap_pvt_thread_mutex_unlock( &slap_daemon[id].sd_mutex );
+ if ( !rc )
+ WAKE_LISTENER(id,wake);
+ return rc;
+}
+
+void
+slapd_set_read( ber_socket_t s, int wake )
+{
+ int do_wake = 1;
+ int id = DAEMON_ID(s);
+ ldap_pvt_thread_mutex_lock( &slap_daemon[id].sd_mutex );
+
+ if( SLAP_SOCK_IS_ACTIVE( id, s ) && !SLAP_SOCK_IS_READ( id, s )) {
+ SLAP_SOCK_SET_READ( id, s );
+ } else {
+ do_wake = 0;
+ }
+ ldap_pvt_thread_mutex_unlock( &slap_daemon[id].sd_mutex );
+ if ( do_wake )
+ WAKE_LISTENER(id,wake);
+}
+
+static void
+slapd_close( ber_socket_t s )
+{
+ Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
+ (long) s );
+ CLR_CLOSE( SLAP_FD2SOCK(s) );
+ tcp_close( SLAP_FD2SOCK(s) );
+#ifdef HAVE_WINSOCK
+ slapd_sockdel( s );
+#endif
+}
+
+void
+slapd_shutsock( ber_socket_t s )
+{
+ Debug( LDAP_DEBUG_CONNS, "daemon: shutdown socket %ld\n",
+ (long) s );
+ shutdown( SLAP_FD2SOCK(s), 2 );
+}
+
+static void
+slap_free_listener_addresses( struct sockaddr **sal )
+{
+ struct sockaddr **sap;
+ if (sal == NULL) return;
+ for (sap = sal; *sap != NULL; sap++) ch_free(*sap);
+ ch_free(sal);
+}
+
+#if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
+static int
+get_url_perms(
+ char **exts,
+ mode_t *perms,
+ int *crit )
+{
+ int i;
+
+ assert( exts != NULL );
+ assert( perms != NULL );
+ assert( crit != NULL );
+
+ *crit = 0;
+ for ( i = 0; exts[ i ]; i++ ) {
+ char *type = exts[ i ];
+ int c = 0;
+
+ if ( type[ 0 ] == '!' ) {
+ c = 1;
+ type++;
+ }
+
+ if ( strncasecmp( type, LDAPI_MOD_URLEXT "=",
+ sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 )
+ {
+ char *value = type + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
+ mode_t p = 0;
+ int j;
+
+ switch (strlen(value)) {
+ case 4:
+ /* skip leading '0' */
+ if ( value[ 0 ] != '0' ) return LDAP_OTHER;
+ value++;
+
+ case 3:
+ for ( j = 0; j < 3; j++) {
+ int v;
+
+ v = value[ j ] - '0';
+
+ if ( v < 0 || v > 7 ) return LDAP_OTHER;
+
+ p |= v << 3*(2-j);
+ }
+ break;
+
+ case 10:
+ for ( j = 1; j < 10; j++ ) {
+ static mode_t m[] = { 0,
+ S_IRUSR, S_IWUSR, S_IXUSR,
+ S_IRGRP, S_IWGRP, S_IXGRP,
+ S_IROTH, S_IWOTH, S_IXOTH
+ };
+ static const char c[] = "-rwxrwxrwx";
+
+ if ( value[ j ] == c[ j ] ) {
+ p |= m[ j ];
+
+ } else if ( value[ j ] != '-' ) {
+ return LDAP_OTHER;
+ }
+ }
+ break;
+
+ default:
+ return LDAP_OTHER;
+ }
+
+ *crit = c;
+ *perms = p;
+
+ return LDAP_SUCCESS;
+ }
+ }
+
+ return LDAP_OTHER;
+}
+#endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
+
+/* port = 0 indicates AF_LOCAL */
+static int
+slap_get_listener_addresses(
+ const char *host,
+ unsigned short port,
+ struct sockaddr ***sal )
+{
+ struct sockaddr **sap;
+
+#ifdef LDAP_PF_LOCAL
+ if ( port == 0 ) {
+ sap = *sal = ch_malloc(2 * sizeof(void *));
+
+ *sap = ch_malloc(sizeof(struct sockaddr_un));
+ sap[1] = NULL;
+
+ if ( strlen(host) >
+ (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) )
+ {
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: domain socket path (%s) too long in URL",
+ host );
+ goto errexit;
+ }
+
+ (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
+ (*sap)->sa_family = AF_LOCAL;
+ strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
+ } else
+#endif /* LDAP_PF_LOCAL */
+ {
+#ifdef HAVE_GETADDRINFO
+ struct addrinfo hints, *res, *sai;
+ int n, err;
+ char serv[7];
+
+ memset( &hints, '\0', sizeof(hints) );
+ hints.ai_flags = AI_PASSIVE;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_family = slap_inet4or6;
+ snprintf(serv, sizeof serv, "%d", port);
+
+ if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
+ Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo() failed: %s\n",
+ AC_GAI_STRERROR(err) );
+ return -1;
+ }
+
+ sai = res;
+ for (n=2; (sai = sai->ai_next) != NULL; n++) {
+ /* EMPTY */ ;
+ }
+ sap = *sal = ch_calloc(n, sizeof(void *));
+ *sap = NULL;
+
+ for ( sai=res; sai; sai=sai->ai_next ) {
+ if( sai->ai_addr == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
+ "getaddrinfo ai_addr is NULL?\n" );
+ freeaddrinfo(res);
+ goto errexit;
+ }
+
+ switch (sai->ai_family) {
+# ifdef LDAP_PF_INET6
+ case AF_INET6:
+ *sap = ch_malloc(sizeof(struct sockaddr_in6));
+ *(struct sockaddr_in6 *)*sap =
+ *((struct sockaddr_in6 *)sai->ai_addr);
+ break;
+# endif /* LDAP_PF_INET6 */
+ case AF_INET:
+ *sap = ch_malloc(sizeof(struct sockaddr_in));
+ *(struct sockaddr_in *)*sap =
+ *((struct sockaddr_in *)sai->ai_addr);
+ break;
+ default:
+ *sap = NULL;
+ break;
+ }
+
+ if (*sap != NULL) {
+ (*sap)->sa_family = sai->ai_family;
+ sap++;
+ *sap = NULL;
+ }
+ }
+
+ freeaddrinfo(res);
+
+#else /* ! HAVE_GETADDRINFO */
+ int i, n = 1;
+ struct in_addr in;
+ struct hostent *he = NULL;
+
+ if ( host == NULL ) {
+ in.s_addr = htonl(INADDR_ANY);
+
+ } else if ( !inet_aton( host, &in ) ) {
+ he = gethostbyname( host );
+ if( he == NULL ) {
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: invalid host %s", host );
+ return -1;
+ }
+ for (n = 0; he->h_addr_list[n]; n++) /* empty */;
+ }
+
+ sap = *sal = ch_malloc((n+1) * sizeof(void *));
+
+ for ( i = 0; i<n; i++ ) {
+ sap[i] = ch_calloc(1, sizeof(struct sockaddr_in));
+ sap[i]->sa_family = AF_INET;
+ ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
+ AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr,
+ he ? (struct in_addr *)he->h_addr_list[i] : &in,
+ sizeof(struct in_addr) );
+ }
+ sap[i] = NULL;
+#endif /* ! HAVE_GETADDRINFO */
+ }
+
+ return 0;
+
+errexit:
+ slap_free_listener_addresses(*sal);
+ return -1;
+}
+
+static int
+slap_open_listener(
+ const char* url,
+ int *listeners,
+ int *cur )
+{
+ int num, tmp, rc;
+ Listener l;
+ Listener *li;
+ LDAPURLDesc *lud;
+ unsigned short port;
+ int err, addrlen = 0;
+ struct sockaddr **sal = NULL, **psal;
+ int socktype = SOCK_STREAM; /* default to COTS */
+ ber_socket_t s;
+ char ebuf[128];
+
+#if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
+ /*
+ * use safe defaults
+ */
+ int crit = 1;
+#endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
+
+ rc = ldap_url_parse( url, &lud );
+
+ if( rc != LDAP_URL_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: listen URL \"%s\" parse error=%d\n",
+ url, rc );
+ return rc;
+ }
+
+ l.sl_url.bv_val = NULL;
+ l.sl_mute = 0;
+ l.sl_busy = 0;
+
+#ifndef HAVE_TLS
+ if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
+ Debug( LDAP_DEBUG_ANY, "daemon: TLS not supported (%s)\n",
+ url );
+ ldap_free_urldesc( lud );
+ return -1;
+ }
+
+ if(! lud->lud_port ) lud->lud_port = LDAP_PORT;
+
+#else /* HAVE_TLS */
+ l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
+
+ if(! lud->lud_port ) {
+ lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
+ }
+#endif /* HAVE_TLS */
+
+ l.sl_is_proxied = ldap_pvt_url_scheme2proxied( lud->lud_scheme );
+
+#ifdef LDAP_TCP_BUFFER
+ l.sl_tcp_rmem = 0;
+ l.sl_tcp_wmem = 0;
+#endif /* LDAP_TCP_BUFFER */
+
+ port = (unsigned short) lud->lud_port;
+
+ tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
+ if ( tmp == LDAP_PROTO_IPC ) {
+#ifdef LDAP_PF_LOCAL
+ if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
+ err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
+ } else {
+ err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
+ }
+#else /* ! LDAP_PF_LOCAL */
+
+ Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
+ url );
+ ldap_free_urldesc( lud );
+ return -1;
+#endif /* ! LDAP_PF_LOCAL */
+ } else {
+ if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
+ || strcmp(lud->lud_host, "*") == 0 )
+ {
+ err = slap_get_listener_addresses(NULL, port, &sal);
+ } else {
+ err = slap_get_listener_addresses(lud->lud_host, port, &sal);
+ }
+ }
+
+#ifdef LDAP_CONNECTIONLESS
+ l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
+#endif /* LDAP_CONNECTIONLESS */
+
+#if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
+ if ( lud->lud_exts ) {
+ err = get_url_perms( lud->lud_exts, &l.sl_perms, &crit );
+ } else {
+ l.sl_perms = S_IRWXU | S_IRWXO;
+ }
+#endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
+
+ if ( lud->lud_dn && lud->lud_dn[0] ) {
+ sprintf( (char *)url, "%s://%s/", lud->lud_scheme, lud->lud_host );
+ Debug( LDAP_DEBUG_ANY, "daemon: listener URL %s<junk> DN must be absent (%s)\n",
+ url, lud->lud_dn );
+ ldap_free_urldesc( lud );
+ return -1;
+ }
+
+ ldap_free_urldesc( lud );
+ if ( err ) {
+ slap_free_listener_addresses(sal);
+ return -1;
+ }
+
+ /* If we got more than one address returned, we need to make space
+ * for it in the slap_listeners array.
+ */
+ for ( num=0; sal[num]; num++ ) /* empty */;
+ if ( num > 1 ) {
+ *listeners += num-1;
+ slap_listeners = ch_realloc( slap_listeners,
+ (*listeners + 1) * sizeof(Listener *) );
+ }
+
+ 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 /* LDAP_PF_INET6 */
+#ifdef LDAP_PF_LOCAL
+ case AF_LOCAL:
+ af = "Local";
+ break;
+#endif /* LDAP_PF_LOCAL */
+ default:
+ sal++;
+ continue;
+ }
+
+#ifdef LDAP_CONNECTIONLESS
+ if( l.sl_is_udp ) socktype = SOCK_DGRAM;
+#endif /* LDAP_CONNECTIONLESS */
+
+ s = socket( (*sal)->sa_family, socktype, 0);
+ if ( s == AC_SOCKET_INVALID ) {
+ int err = sock_errno();
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: %s socket() failed errno=%d (%s)\n",
+ af, err, sock_errstr(err, ebuf, sizeof(ebuf)) );
+ sal++;
+ continue;
+ }
+ l.sl_sd = SLAP_SOCKNEW( s );
+
+ if ( l.sl_sd >= dtblsize ) {
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: listener descriptor %ld is too great %ld\n",
+ (long) l.sl_sd, (long) dtblsize );
+ tcp_close( s );
+ sal++;
+ continue;
+ }
+
+#ifdef LDAP_PF_LOCAL
+ if ( (*sal)->sa_family == AF_LOCAL ) {
+ unlink( ((struct sockaddr_un *)*sal)->sun_path );
+ } else
+#endif /* LDAP_PF_LOCAL */
+ {
+#ifdef SO_REUSEADDR
+ /* enable address reuse */
+ tmp = 1;
+ rc = setsockopt( s, SOL_SOCKET, SO_REUSEADDR,
+ (char *) &tmp, sizeof(tmp) );
+ if ( rc == AC_SOCKET_ERROR ) {
+ int err = sock_errno();
+ Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
+ "setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
+ (long) l.sl_sd, err, sock_errstr(err, ebuf, sizeof(ebuf)) );
+ }
+#endif /* SO_REUSEADDR */
+ }
+
+ switch( (*sal)->sa_family ) {
+ case AF_INET:
+ addrlen = sizeof(struct sockaddr_in);
+ break;
+#ifdef LDAP_PF_INET6
+ case AF_INET6:
+#ifdef IPV6_V6ONLY
+ /* Try to use IPv6 sockets for IPv6 only */
+ tmp = 1;
+ rc = setsockopt( s , IPPROTO_IPV6, IPV6_V6ONLY,
+ (char *) &tmp, sizeof(tmp) );
+ if ( rc == AC_SOCKET_ERROR ) {
+ int err = sock_errno();
+ Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
+ "setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
+ (long) l.sl_sd, err, sock_errstr(err, ebuf, sizeof(ebuf)) );
+ }
+#endif /* IPV6_V6ONLY */
+ addrlen = sizeof(struct sockaddr_in6);
+ break;
+#endif /* LDAP_PF_INET6 */
+
+#ifdef LDAP_PF_LOCAL
+ case AF_LOCAL:
+#ifdef LOCAL_CREDS
+ {
+ int one = 1;
+ setsockopt( s, 0, LOCAL_CREDS, &one, sizeof( one ) );
+ }
+#endif /* LOCAL_CREDS */
+
+ addrlen = sizeof( struct sockaddr_un );
+ break;
+#endif /* LDAP_PF_LOCAL */
+ }
+
+#ifdef LDAP_PF_LOCAL
+ /* create socket with all permissions set for those systems
+ * that honor permissions on sockets (e.g. Linux); typically,
+ * only write is required. To exploit filesystem permissions,
+ * place the socket in a directory and use directory's
+ * permissions. Need write perms to the directory to
+ * create/unlink the socket; likely need exec perms to access
+ * the socket (ITS#4709) */
+ {
+ mode_t old_umask = 0;
+
+ if ( (*sal)->sa_family == AF_LOCAL ) {
+ old_umask = umask( 0 );
+ }
+#endif /* LDAP_PF_LOCAL */
+ rc = bind( s, *sal, addrlen );
+#ifdef LDAP_PF_LOCAL
+ if ( old_umask != 0 ) {
+ umask( old_umask );
+ }
+ }
+#endif /* LDAP_PF_LOCAL */
+ if ( rc ) {
+ err = sock_errno();
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: bind(%ld) failed errno=%d (%s)\n",
+ (long)l.sl_sd, err, sock_errstr( err, ebuf, sizeof(ebuf) ) );
+ tcp_close( s );
+ sal++;
+ continue;
+ }
+
+ switch ( (*sal)->sa_family ) {
+#ifdef LDAP_PF_LOCAL
+ case AF_LOCAL: {
+ char *path = ((struct sockaddr_un *)*sal)->sun_path;
+ l.sl_name.bv_len = strlen(path) + STRLENOF("PATH=");
+ l.sl_name.bv_val = ch_malloc( l.sl_name.bv_len + 1 );
+ snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
+ "PATH=%s", path );
+ } break;
+#endif /* LDAP_PF_LOCAL */
+
+ case AF_INET: {
+ char addr[INET_ADDRSTRLEN];
+ const char *s;
+#if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
+ s = inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
+ addr, sizeof(addr) );
+#else /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
+ s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
+#endif /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
+ if (!s) s = SLAP_STRING_UNKNOWN;
+ port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
+ l.sl_name.bv_val =
+ ch_malloc( sizeof("IP=255.255.255.255:65535") );
+ snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
+ "IP=%s:%d", s, port );
+ l.sl_name.bv_len = strlen( l.sl_name.bv_val );
+ } break;
+
+#ifdef LDAP_PF_INET6
+ case AF_INET6: {
+ char addr[INET6_ADDRSTRLEN];
+ const char *s;
+ s = inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
+ addr, sizeof addr);
+ if (!s) s = SLAP_STRING_UNKNOWN;
+ port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
+ l.sl_name.bv_len = strlen(s) + sizeof("IP=[]:65535");
+ l.sl_name.bv_val = ch_malloc( l.sl_name.bv_len );
+ snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=[%s]:%d",
+ s, port );
+ l.sl_name.bv_len = strlen( l.sl_name.bv_val );
+ } break;
+#endif /* LDAP_PF_INET6 */
+
+ default:
+ Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
+ (int) (*sal)->sa_family );
+ break;
+ }
+
+ AC_MEMCPY(&l.sl_sa, *sal, addrlen);
+ ber_str2bv( url, 0, 1, &l.sl_url);
+ li = ch_malloc( sizeof( Listener ) );
+ *li = l;
+ slap_listeners[*cur] = li;
+ (*cur)++;
+ sal++;
+ }
+
+ slap_free_listener_addresses(psal);
+
+ if ( l.sl_url.bv_val == NULL ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "slap_open_listener: failed on %s\n", url );
+ return -1;
+ }
+
+ Debug( LDAP_DEBUG_TRACE, "daemon: listener initialized %s\n",
+ l.sl_url.bv_val );
+ return 0;
+}
+
+static int sockinit(void);
+static int sockdestroy(void);
+
+static int daemon_inited = 0;
+
+int
+slapd_daemon_init( const char *urls )
+{
+ int i, j, n, rc;
+ char **u;
+
+ Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
+ urls ? urls : "<null>" );
+
+ wake_sds = ch_malloc( slapd_daemon_threads * sizeof( sdpair ));
+ for ( i=0; i<slapd_daemon_threads; i++ ) {
+ wake_sds[i][0] = AC_SOCKET_INVALID;
+ wake_sds[i][1] = AC_SOCKET_INVALID;
+ }
+
+ slap_daemon = ch_calloc( slapd_daemon_threads, sizeof( slap_daemon_st ));
+ ldap_pvt_thread_mutex_init( &slap_daemon[0].sd_mutex );
+#ifdef HAVE_TCPD
+ ldap_pvt_thread_mutex_init( &sd_tcpd_mutex );
+#endif /* TCP Wrappers */
+ ldap_pvt_thread_mutex_init( &emfile_mutex );
+
+ daemon_inited = 1;
+
+ if( (rc = sockinit()) != 0 ) return rc;
+
+#ifdef HAVE_SYSCONF
+ dtblsize = sysconf( _SC_OPEN_MAX );
+#elif defined(HAVE_GETDTABLESIZE)
+ dtblsize = getdtablesize();
+#else /* ! HAVE_SYSCONF && ! HAVE_GETDTABLESIZE */
+ dtblsize = FD_SETSIZE;
+#endif /* ! HAVE_SYSCONF && ! HAVE_GETDTABLESIZE */
+
+ SETUP_CLOSE();
+
+ /* open a pipe (or something equivalent connected to itself).
+ * we write a byte on this fd whenever we catch a signal. The main
+ * loop will be select'ing on this socket, and will wake up when
+ * this byte arrives.
+ */
+ if( (rc = lutil_pair( wake_sds[0] )) < 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: lutil_pair() failed rc=%d\n", rc );
+ return rc;
+ }
+ ber_pvt_socket_set_nonblock( wake_sds[0][1], 1 );
+
+ SLAP_SOCK_INIT(0);
+
+ if( urls == NULL ) urls = "ldap:///";
+
+ u = ldap_str2charray( urls, " " );
+
+ if( u == NULL || u[0] == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
+ urls );
+ if ( u )
+ ldap_charray_free( u );
+ return -1;
+ }
+
+ for( i=0; u[i] != NULL; i++ ) {
+ Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
+ u[i] );
+ }
+
+ if( i == 0 ) {
+ Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
+ urls );
+ ldap_charray_free( u );
+ return -1;
+ }
+
+ Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
+ i );
+ slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
+
+ for(n = 0, j = 0; u[n]; n++ ) {
+ if ( slap_open_listener( u[n], &i, &j ) ) {
+ ldap_charray_free( u );
+ return -1;
+ }
+ }
+ slap_listeners[j] = NULL;
+
+ Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
+ i );
+
+
+#ifdef HAVE_SLP
+ if( slapd_register_slp ) {
+ slapd_slp_init( urls );
+ slapd_slp_reg();
+ }
+#endif /* HAVE_SLP */
+
+ ldap_charray_free( u );
+
+ return !i;
+}
+
+/* transfer control of active sockets from old to new listener threads */
+static void
+slapd_socket_realloc( int newnum )
+{
+ int i, j, oldid, newid;
+ int newmask = newnum - 1;
+ Listener *sl;
+ int num_listeners;
+
+ for ( i=0; slap_listeners[i] != NULL; i++ ) ;
+ num_listeners = i;
+
+ for ( i=0; i<dtblsize; i++ ) {
+ int skip = 0;
+
+ /* don't bother with wake_sds, they're assigned independent of mask */
+ for (j=0; j<slapd_daemon_threads; j++) {
+ if ( i == wake_sds[j][0] || i == wake_sds[j][1] ) {
+ skip = 1;
+ break;
+ }
+ }
+ if ( skip ) continue;
+
+ oldid = DAEMON_ID(i);
+ newid = i & newmask;
+ if ( oldid == newid ) continue;
+ if ( !SLAP_SOCK_IS_ACTIVE( oldid, i )) continue;
+ sl = NULL;
+ if ( num_listeners ) {
+ for ( j=0; slap_listeners[j] != NULL; j++ ) {
+ if ( slap_listeners[j]->sl_sd == i ) {
+ sl = slap_listeners[j];
+ num_listeners--;
+ break;
+ }
+ }
+ }
+ SLAP_SOCK_ADD( newid, i, sl );
+ if ( SLAP_SOCK_IS_READ( oldid, i )) {
+ SLAP_SOCK_SET_READ( newid, i );
+ }
+ if ( SLAP_SOCK_IS_WRITE( oldid, i )) {
+ SLAP_SOCK_SET_WRITE( newid, i );
+ slap_daemon[oldid].sd_nwriters--;
+ slap_daemon[newid].sd_nwriters++;
+ }
+ if ( connection_is_active( i )) {
+ slap_daemon[oldid].sd_nactives--;
+ slap_daemon[newid].sd_nactives++;
+ }
+ SLAP_SOCK_DEL( oldid, i );
+ }
+}
+
+
+int
+slapd_daemon_destroy( void )
+{
+ connections_destroy();
+ if ( daemon_inited ) {
+ int i;
+
+ for ( i=0; i<slapd_daemon_threads; i++ ) {
+#ifdef HAVE_WINSOCK
+ if ( wake_sds[i][1] != INVALID_SOCKET &&
+ SLAP_FD2SOCK( wake_sds[i][1] ) != SLAP_FD2SOCK( wake_sds[i][0] ))
+#endif /* HAVE_WINSOCK */
+ tcp_close( SLAP_FD2SOCK(wake_sds[i][1]) );
+#ifdef HAVE_WINSOCK
+ if ( wake_sds[i][0] != INVALID_SOCKET )
+#endif /* HAVE_WINSOCK */
+ tcp_close( SLAP_FD2SOCK(wake_sds[i][0]) );
+ ldap_pvt_thread_mutex_destroy( &slap_daemon[i].sd_mutex );
+ SLAP_SOCK_DESTROY(i);
+ }
+ daemon_inited = 0;
+ ldap_pvt_thread_mutex_destroy( &emfile_mutex );
+#ifdef HAVE_TCPD
+ ldap_pvt_thread_mutex_destroy( &sd_tcpd_mutex );
+#endif /* TCP Wrappers */
+ }
+ sockdestroy();
+
+#ifdef HAVE_SLP
+ if( slapd_register_slp ) {
+ slapd_slp_dereg();
+ slapd_slp_deinit();
+ }
+#endif /* HAVE_SLP */
+
+ return 0;
+}
+
+
+static void
+close_listeners(
+ int remove )
+{
+ int l;
+
+ if ( !listening )
+ return;
+ listening = 0;
+
+ for ( l = 0; slap_listeners[l] != NULL; l++ ) {
+ Listener *lr = slap_listeners[l];
+
+ if ( lr->sl_sd != AC_SOCKET_INVALID ) {
+ int s = lr->sl_sd;
+ lr->sl_sd = AC_SOCKET_INVALID;
+ if ( remove ) slapd_remove( s, NULL, 0, 0, 0 );
+
+#ifdef LDAP_PF_LOCAL
+ if ( lr->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
+ unlink( lr->sl_sa.sa_un_addr.sun_path );
+ }
+#endif /* LDAP_PF_LOCAL */
+
+ slapd_close( s );
+ }
+ }
+}
+
+static void
+destroy_listeners( void )
+{
+ Listener *lr, **ll = slap_listeners;
+
+ if ( ll == NULL )
+ return;
+
+ while ( (lr = *ll++) != NULL ) {
+ if ( lr->sl_url.bv_val ) {
+ ber_memfree( lr->sl_url.bv_val );
+ }
+
+ if ( lr->sl_name.bv_val ) {
+ ber_memfree( lr->sl_name.bv_val );
+ }
+
+ free( lr );
+ }
+
+ free( slap_listeners );
+ slap_listeners = NULL;
+}
+
+static int
+slap_listener(
+ Listener *sl )
+{
+ Sockaddr from;
+
+ ber_socket_t s, sfd;
+ ber_socklen_t len = sizeof(from);
+ Connection *c;
+ slap_ssf_t ssf = 0;
+ struct berval authid = BER_BVNULL;
+#ifdef SLAPD_RLOOKUPS
+ char hbuf[NI_MAXHOST];
+#endif /* SLAPD_RLOOKUPS */
+
+ char *dnsname = NULL;
+ /* we assume INET6_ADDRSTRLEN > INET_ADDRSTRLEN */
+ char peername[LDAP_IPADDRLEN];
+ struct berval peerbv = BER_BVC(peername);
+#ifdef LDAP_PF_LOCAL_SENDMSG
+ char peerbuf[8];
+#endif
+ int cflag;
+ int tid;
+ char ebuf[128];
+
+ Debug( LDAP_DEBUG_TRACE,
+ ">>> slap_listener(%s)\n",
+ sl->sl_url.bv_val );
+
+ peername[0] = '\0';
+
+#ifdef LDAP_CONNECTIONLESS
+ if ( sl->sl_is_udp ) return 1;
+#endif /* LDAP_CONNECTIONLESS */
+
+# 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_FD2SOCK( sl->sl_sd ), (struct sockaddr *) &from, &len );
+ if ( s != AC_SOCKET_INVALID ) {
+ SET_CLOSE(s);
+ }
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: accept() = %d\n", s );
+
+ /* Resume the listener FD to allow concurrent-processing of
+ * additional incoming connections.
+ */
+ sl->sl_busy = 0;
+ WAKE_LISTENER(DAEMON_ID(sl->sl_sd),1);
+
+ if ( s == AC_SOCKET_INVALID ) {
+ int err = sock_errno();
+
+ if(
+#ifdef EMFILE
+ err == EMFILE ||
+#endif /* EMFILE */
+#ifdef ENFILE
+ err == ENFILE ||
+#endif /* ENFILE */
+ 0 )
+ {
+ ldap_pvt_thread_mutex_lock( &emfile_mutex );
+ emfile++;
+ /* Stop listening until an existing session closes */
+ sl->sl_mute = 1;
+ ldap_pvt_thread_mutex_unlock( &emfile_mutex );
+ }
+
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: accept(%ld) failed errno=%d (%s)\n",
+ (long) sl->sl_sd, err, sock_errstr(err, ebuf, sizeof(ebuf)) );
+ ldap_pvt_thread_yield();
+ return 0;
+ }
+ sfd = SLAP_SOCKNEW( s );
+
+ /* make sure descriptor number isn't too great */
+ if ( sfd >= dtblsize ) {
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: %ld beyond descriptor table size %ld\n",
+ (long) sfd, (long) dtblsize );
+
+ tcp_close(s);
+ ldap_pvt_thread_yield();
+ return 0;
+ }
+ tid = DAEMON_ID(sfd);
+
+#ifdef LDAP_DEBUG
+ ldap_pvt_thread_mutex_lock( &slap_daemon[tid].sd_mutex );
+ /* newly accepted stream should not be in any of the FD SETS */
+ assert( SLAP_SOCK_NOT_ACTIVE( tid, sfd ));
+ ldap_pvt_thread_mutex_unlock( &slap_daemon[tid].sd_mutex );
+#endif /* LDAP_DEBUG */
+
+#if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
+#ifdef LDAP_PF_LOCAL
+ /* for IPv4 and IPv6 sockets only */
+ if ( from.sa_addr.sa_family != AF_LOCAL )
+#endif /* LDAP_PF_LOCAL */
+ {
+ int rc;
+ int tmp;
+#ifdef SO_KEEPALIVE
+ /* enable keep alives */
+ tmp = 1;
+ rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
+ (char *) &tmp, sizeof(tmp) );
+ if ( rc == AC_SOCKET_ERROR ) {
+ int err = sock_errno();
+ Debug( LDAP_DEBUG_ANY,
+ "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
+ "errno=%d (%s)\n", (long) sfd, err, sock_errstr(err, ebuf, sizeof(ebuf)) );
+ slapd_close(sfd);
+ return 0;
+ }
+#endif /* SO_KEEPALIVE */
+#ifdef TCP_NODELAY
+ /* enable no delay */
+ tmp = 1;
+ rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
+ (char *)&tmp, sizeof(tmp) );
+ if ( rc == AC_SOCKET_ERROR ) {
+ int err = sock_errno();
+ Debug( LDAP_DEBUG_ANY,
+ "slapd(%ld): setsockopt(TCP_NODELAY) failed "
+ "errno=%d (%s)\n", (long) sfd, err, sock_errstr(err, ebuf, sizeof(ebuf)) );
+ slapd_close(sfd);
+ return 0;
+ }
+#endif /* TCP_NODELAY */
+ }
+#endif /* SO_KEEPALIVE || TCP_NODELAY */
+
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: listen=%ld, new connection on %ld\n",
+ (long) sl->sl_sd, (long) sfd );
+
+ cflag = 0;
+ switch ( from.sa_addr.sa_family ) {
+# ifdef LDAP_PF_LOCAL
+ case AF_LOCAL:
+ cflag |= CONN_IS_IPC;
+
+ /* 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,
+ sl->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 = local_ssf;
+ {
+ uid_t uid;
+ gid_t gid;
+
+#ifdef LDAP_PF_LOCAL_SENDMSG
+ peerbv.bv_val = peerbuf;
+ peerbv.bv_len = sizeof( peerbuf );
+#endif
+ if( LUTIL_GETPEEREID( s, &uid, &gid, &peerbv ) == 0 ) {
+ authid.bv_val = ch_malloc(
+ STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
+ "cn=peercred,cn=external,cn=auth" ) + 1 );
+ authid.bv_len = sprintf( authid.bv_val,
+ "gidNumber=%d+uidNumber=%d,"
+ "cn=peercred,cn=external,cn=auth",
+ (int) gid, (int) uid );
+ assert( authid.bv_len <=
+ STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
+ "cn=peercred,cn=external,cn=auth" ) );
+ }
+ }
+ dnsname = "local";
+ break;
+#endif /* LDAP_PF_LOCAL */
+
+# ifdef LDAP_PF_INET6
+ case AF_INET6:
+# endif /* LDAP_PF_INET6 */
+ case AF_INET:
+ if ( sl->sl_is_proxied ) {
+ if ( !proxyp( sfd, &from ) ) {
+ Debug( LDAP_DEBUG_ANY, "slapd(%ld): proxyp failed\n", (long)sfd );
+ slapd_close( sfd );
+ return 0;
+ }
+ }
+ ldap_pvt_sockaddrstr( &from, &peerbv );
+ break;
+
+ default:
+ slapd_close(sfd);
+ return 0;
+ }
+
+ if ( ( from.sa_addr.sa_family == AF_INET )
+#ifdef LDAP_PF_INET6
+ || ( from.sa_addr.sa_family == AF_INET6 )
+#endif /* LDAP_PF_INET6 */
+ )
+ {
+ dnsname = NULL;
+#ifdef SLAPD_RLOOKUPS
+ if ( use_reverse_lookup ) {
+ char *herr;
+ if (ldap_pvt_get_hname( (const struct sockaddr *)&from, len, hbuf,
+ sizeof(hbuf), &herr ) == 0) {
+ ldap_pvt_str2lower( hbuf );
+ dnsname = hbuf;
+ }
+ }
+#endif /* SLAPD_RLOOKUPS */
+
+#ifdef HAVE_TCPD
+ {
+ int rc;
+ char *peeraddr, *paend;
+ peeraddr = peerbv.bv_val + 3;
+ if ( *peeraddr == '[' ) {
+ peeraddr++;
+ paend = strrchr( peeraddr, ']' );
+ } else {
+ paend = strrchr( peeraddr, ':' );
+ }
+ if ( paend )
+ *paend = '\0';
+ ldap_pvt_thread_mutex_lock( &sd_tcpd_mutex );
+ rc = hosts_ctl("slapd",
+ dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
+ peeraddr,
+ SLAP_STRING_UNKNOWN );
+ ldap_pvt_thread_mutex_unlock( &sd_tcpd_mutex );
+ if ( !rc ) {
+ /* DENY ACCESS */
+ Debug( LDAP_DEBUG_STATS,
+ "fd=%ld DENIED from %s (%s)\n",
+ (long) sfd,
+ dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
+ peeraddr );
+ slapd_close(sfd);
+ return 0;
+ }
+ if ( paend ) {
+ if ( peeraddr[-1] == '[' )
+ *paend = ']';
+ else
+ *paend = ':';
+ }
+ }
+#endif /* HAVE_TCPD */
+ }
+
+#ifdef HAVE_TLS
+ if ( sl->sl_is_tls ) cflag |= CONN_IS_TLS;
+#endif
+ c = connection_init(sfd, sl,
+ dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
+ peername, cflag, ssf,
+ authid.bv_val ? &authid : NULL
+ LDAP_PF_LOCAL_SENDMSG_ARG(&peerbv));
+
+ if( authid.bv_val ) ch_free(authid.bv_val);
+
+ if( !c ) {
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: connection_init(%ld, %s, %s) failed.\n",
+ (long) sfd, peername, sl->sl_name.bv_val );
+ slapd_close(sfd);
+ }
+
+ return 0;
+}
+
+static void*
+slap_listener_thread(
+ void* ctx,
+ void* ptr )
+{
+ int rc;
+ Listener *sl = (Listener *)ptr;
+
+ rc = slap_listener( sl );
+
+ if( rc != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY,
+ "slap_listener_thread(%s): failed err=%d",
+ sl->sl_url.bv_val, rc );
+ }
+
+ return (void*)NULL;
+}
+
+static int
+slap_listener_activate(
+ Listener* sl )
+{
+ int rc;
+
+ Debug( LDAP_DEBUG_TRACE, "slap_listener_activate(%d): %s\n",
+ sl->sl_sd, sl->sl_busy ? "busy" : "" );
+
+ sl->sl_busy = 1;
+
+ rc = ldap_pvt_thread_pool_submit( &connection_pool,
+ slap_listener_thread, (void *) sl );
+
+ if( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "slap_listener_activate(%d): submit failed (%d)\n",
+ sl->sl_sd, rc );
+ }
+ return rc;
+}
+
+static void *
+slapd_rtask_trampoline(
+ void *ctx,
+ void *arg )
+{
+ struct re_s *rtask = arg;
+
+ /* invalidate pool_cookie */
+ rtask->pool_cookie = NULL;
+ return rtask->routine( ctx, arg );
+}
+
+static void *
+slapd_daemon_task(
+ void *ptr )
+{
+ int l;
+ time_t last_idle_check = 0;
+ int ebadf = 0;
+ int tid = (slap_daemon_st *) ptr - slap_daemon;
+ char ebuf[128];
+
+#define SLAPD_IDLE_CHECK_LIMIT 4
+
+ slapd_add( wake_sds[tid][0], 0, NULL, tid );
+ if ( tid )
+ goto loop;
+
+ /* Init stuff done only by thread 0 */
+
+ last_idle_check = slap_get_time();
+
+ for ( l = 0; slap_listeners[l] != NULL; l++ ) {
+ if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
+
+#ifdef LDAP_CONNECTIONLESS
+ /* Since this is connectionless, the data port is the
+ * listening port. The listen() and accept() calls
+ * are unnecessary.
+ */
+ if ( slap_listeners[l]->sl_is_udp )
+ continue;
+#endif /* LDAP_CONNECTIONLESS */
+
+ /* FIXME: TCP-only! */
+#ifdef LDAP_TCP_BUFFER
+ if ( 1 ) {
+ int origsize, size, realsize, rc;
+ socklen_t optlen;
+
+ size = 0;
+ if ( slap_listeners[l]->sl_tcp_rmem > 0 ) {
+ size = slap_listeners[l]->sl_tcp_rmem;
+ } else if ( slapd_tcp_rmem > 0 ) {
+ size = slapd_tcp_rmem;
+ }
+
+ if ( size > 0 ) {
+ optlen = sizeof( origsize );
+ rc = getsockopt( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ),
+ SOL_SOCKET,
+ SO_RCVBUF,
+ (void *)&origsize,
+ &optlen );
+
+ if ( rc ) {
+ int err = sock_errno();
+ Debug( LDAP_DEBUG_ANY,
+ "slapd_daemon_task: getsockopt(SO_RCVBUF) failed errno=%d (%s)\n",
+ err, sock_errstr(err, ebuf, sizeof(ebuf)) );
+ }
+
+ optlen = sizeof( size );
+ rc = setsockopt( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ),
+ SOL_SOCKET,
+ SO_RCVBUF,
+ (const void *)&size,
+ optlen );
+
+ if ( rc ) {
+ int err = sock_errno();
+ Debug( LDAP_DEBUG_ANY,
+ "slapd_daemon_task: setsockopt(SO_RCVBUF) failed errno=%d (%s)\n",
+ err, sock_errstr(err, ebuf, sizeof(ebuf)) );
+ }
+
+ optlen = sizeof( realsize );
+ rc = getsockopt( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ),
+ SOL_SOCKET,
+ SO_RCVBUF,
+ (void *)&realsize,
+ &optlen );
+
+ if ( rc ) {
+ int err = sock_errno();
+ Debug( LDAP_DEBUG_ANY,
+ "slapd_daemon_task: getsockopt(SO_RCVBUF) failed errno=%d (%s)\n",
+ err, sock_errstr(err, ebuf, sizeof(ebuf)) );
+ }
+
+ Debug(LDAP_DEBUG_ANY,
+ "slapd_daemon_task: url=%s (#%d) RCVBUF original size=%d requested size=%d real size=%d\n",
+ slap_listeners[l]->sl_url.bv_val, l,
+ origsize, size, realsize );
+ }
+
+ size = 0;
+ if ( slap_listeners[l]->sl_tcp_wmem > 0 ) {
+ size = slap_listeners[l]->sl_tcp_wmem;
+ } else if ( slapd_tcp_wmem > 0 ) {
+ size = slapd_tcp_wmem;
+ }
+
+ if ( size > 0 ) {
+ optlen = sizeof( origsize );
+ rc = getsockopt( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ),
+ SOL_SOCKET,
+ SO_SNDBUF,
+ (void *)&origsize,
+ &optlen );
+
+ if ( rc ) {
+ int err = sock_errno();
+ Debug( LDAP_DEBUG_ANY,
+ "slapd_daemon_task: getsockopt(SO_SNDBUF) failed errno=%d (%s)\n",
+ err, sock_errstr(err, ebuf, sizeof(ebuf)) );
+ }
+
+ optlen = sizeof( size );
+ rc = setsockopt( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ),
+ SOL_SOCKET,
+ SO_SNDBUF,
+ (const void *)&size,
+ optlen );
+
+ if ( rc ) {
+ int err = sock_errno();
+ Debug( LDAP_DEBUG_ANY,
+ "slapd_daemon_task: setsockopt(SO_SNDBUF) failed errno=%d (%s)",
+ err, sock_errstr(err, ebuf, sizeof(ebuf)) );
+ }
+
+ optlen = sizeof( realsize );
+ rc = getsockopt( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ),
+ SOL_SOCKET,
+ SO_SNDBUF,
+ (void *)&realsize,
+ &optlen );
+
+ if ( rc ) {
+ int err = sock_errno();
+ Debug( LDAP_DEBUG_ANY,
+ "slapd_daemon_task: getsockopt(SO_SNDBUF) failed errno=%d (%s)\n",
+ err, sock_errstr(err, ebuf, sizeof(ebuf)) );
+ }
+
+ Debug(LDAP_DEBUG_ANY,
+ "slapd_daemon_task: url=%s (#%d) SNDBUF original size=%d requested size=%d real size=%d\n",
+ slap_listeners[l]->sl_url.bv_val, l,
+ origsize, size, realsize );
+ }
+ }
+#endif /* LDAP_TCP_BUFFER */
+
+ if ( listen( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ), SLAPD_LISTEN_BACKLOG ) == -1 ) {
+ int err = sock_errno();
+
+#ifdef LDAP_PF_INET6
+ /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
+ * we are already listening to in6addr_any, then we want to ignore
+ * this and continue.
+ */
+ if ( err == EADDRINUSE ) {
+ int i;
+ struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
+ struct sockaddr_in6 sa6;
+
+ if ( sa.sin_family == AF_INET &&
+ sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
+ for ( i = 0 ; i < l; i++ ) {
+ sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
+ if ( sa6.sin6_family == AF_INET6 &&
+ !memcmp( &sa6.sin6_addr, &in6addr_any,
+ sizeof(struct in6_addr) ) )
+ {
+ break;
+ }
+ }
+
+ if ( i < l ) {
+ /* We are already listening to in6addr_any */
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: Attempt to listen to 0.0.0.0 failed, "
+ "already listening on ::, assuming IPv4 included\n" );
+ slapd_close( slap_listeners[l]->sl_sd );
+ slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
+ continue;
+ }
+ }
+ }
+#endif /* LDAP_PF_INET6 */
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: listen(%s, 5) failed errno=%d (%s)\n",
+ slap_listeners[l]->sl_url.bv_val, err,
+ sock_errstr(err, ebuf, sizeof(ebuf)) );
+ ldap_pvt_thread_mutex_lock( &slapd_init_mutex );
+ slapd_shutdown = 2;
+ ldap_pvt_thread_cond_signal( &slapd_init_cond );
+ ldap_pvt_thread_mutex_unlock( &slapd_init_mutex );
+ return (void*)-1;
+ }
+
+ /* make the listening socket non-blocking */
+ if ( ber_pvt_socket_set_nonblock( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ), 1 ) < 0 ) {
+ Debug( LDAP_DEBUG_ANY, "slapd_daemon_task: "
+ "set nonblocking on a listening socket failed\n" );
+ ldap_pvt_thread_mutex_lock( &slapd_init_mutex );
+ slapd_shutdown = 2;
+ ldap_pvt_thread_cond_signal( &slapd_init_cond );
+ ldap_pvt_thread_mutex_unlock( &slapd_init_mutex );
+ return (void*)-1;
+ }
+
+ slapd_add( slap_listeners[l]->sl_sd, 0, slap_listeners[l], -1 );
+ }
+
+ ldap_pvt_thread_mutex_lock( &slapd_init_mutex );
+ slapd_ready = 1;
+ ldap_pvt_thread_cond_signal( &slapd_init_cond );
+ ldap_pvt_thread_mutex_unlock( &slapd_init_mutex );
+
+#ifdef HAVE_NT_SERVICE_MANAGER
+ if ( started_event != NULL ) {
+ ldap_pvt_thread_cond_signal( &started_event );
+ }
+#endif /* HAVE_NT_SERVICE_MANAGER */
+
+loop:
+
+ /* initialization complete. Here comes the loop. */
+
+ while ( !slapd_shutdown ) {
+ ber_socket_t i;
+ int ns, nwriters;
+ int at;
+ ber_socket_t nfds;
+#if SLAP_EVENTS_ARE_INDEXED
+ ber_socket_t nrfds, nwfds;
+#endif /* SLAP_EVENTS_ARE_INDEXED */
+#define SLAPD_EBADF_LIMIT 16
+
+ time_t now;
+
+ SLAP_EVENT_DECL;
+
+ struct timeval tv;
+ struct timeval *tvp;
+
+ struct timeval cat;
+ time_t tdelta = 1;
+ struct re_s* rtask;
+
+ now = slap_get_time();
+
+ if ( !tid && ( global_idletimeout > 0 )) {
+ int check = 0;
+ /* Set the select timeout.
+ * Don't just truncate, preserve the fractions of
+ * seconds to prevent sleeping for zero time.
+ */
+ {
+ tv.tv_sec = global_idletimeout / SLAPD_IDLE_CHECK_LIMIT;
+ tv.tv_usec = global_idletimeout - \
+ ( tv.tv_sec * SLAPD_IDLE_CHECK_LIMIT );
+ tv.tv_usec *= 1000000 / SLAPD_IDLE_CHECK_LIMIT;
+ if ( difftime( last_idle_check +
+ global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 )
+ check = 1;
+ }
+ if ( check ) {
+ connections_timeout_idle( now );
+ last_idle_check = now;
+ }
+ } else {
+ tv.tv_sec = 0;
+ tv.tv_usec = 0;
+ }
+
+#ifdef SIGHUP
+ if ( slapd_gentle_shutdown ) {
+ ber_socket_t active;
+
+ if ( !tid && slapd_gentle_shutdown == 1 ) {
+ BackendDB *be;
+ Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n" );
+ close_listeners( 1 );
+ frontendDB->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
+ LDAP_STAILQ_FOREACH(be, &backendDB, be_next) {
+ be->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
+ }
+ slapd_gentle_shutdown = 2;
+ }
+
+ ldap_pvt_thread_mutex_lock( &slap_daemon[tid].sd_mutex );
+ active = slap_daemon[tid].sd_nactives;
+ ldap_pvt_thread_mutex_unlock( &slap_daemon[tid].sd_mutex );
+
+ if ( active == 0 ) {
+ if ( !tid ) {
+ for ( l=1; l<slapd_daemon_threads; l++ ) {
+ ldap_pvt_thread_mutex_lock( &slap_daemon[l].sd_mutex );
+ active += slap_daemon[l].sd_nactives;
+ ldap_pvt_thread_mutex_unlock( &slap_daemon[l].sd_mutex );
+ }
+ if ( !active )
+ slapd_shutdown = 1;
+ }
+ if ( !active )
+ break;
+ }
+ }
+#endif /* SIGHUP */
+ at = 0;
+
+ ldap_pvt_thread_mutex_lock( &slap_daemon[tid].sd_mutex );
+
+ nwriters = slap_daemon[tid].sd_nwriters;
+
+ if ( listening )
+ for ( l = 0; slap_listeners[l] != NULL; l++ ) {
+ Listener *lr = slap_listeners[l];
+
+ if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
+ if ( DAEMON_ID( lr->sl_sd ) != tid ) continue;
+ if ( !SLAP_SOCK_IS_ACTIVE( tid, lr->sl_sd )) continue;
+
+ if ( lr->sl_mute || lr->sl_busy )
+ {
+ SLAP_SOCK_CLR_READ( tid, lr->sl_sd );
+ } else {
+ SLAP_SOCK_SET_READ( tid, lr->sl_sd );
+ }
+ }
+
+ SLAP_EVENT_INIT(tid);
+
+ nfds = SLAP_EVENT_MAX(tid);
+
+ if (( global_idletimeout ) && slap_daemon[tid].sd_nactives ) at = 1;
+
+ ldap_pvt_thread_mutex_unlock( &slap_daemon[tid].sd_mutex );
+
+ if ( at
+#if defined(HAVE_YIELDING_SELECT)
+ && ( tv.tv_sec || tv.tv_usec )
+#endif /* HAVE_YIELDING_SELECT */
+ )
+ {
+ tvp = &tv;
+ } else {
+ tvp = NULL;
+ }
+
+ /* Only thread 0 handles runqueue */
+ if ( !tid ) {
+ ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
+ rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
+ while ( rtask && cat.tv_sec && cat.tv_sec <= now ) {
+ if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
+ ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
+ } else {
+ ldap_pvt_runqueue_runtask( &slapd_rq, rtask );
+ ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
+ ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
+ ldap_pvt_thread_pool_submit2( &connection_pool,
+ slapd_rtask_trampoline, (void *) rtask, &rtask->pool_cookie );
+ ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
+ }
+ rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
+ }
+ ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
+
+ if ( rtask && cat.tv_sec ) {
+ /* NOTE: diff __should__ always be >= 0,
+ * AFAI understand; however (ITS#4872),
+ * time_t might be unsigned in some systems,
+ * while difftime() returns a double */
+ double 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;
+ }
+ }
+ }
+
+ for ( l = 0; slap_listeners[l] != NULL; l++ ) {
+ Listener *lr = slap_listeners[l];
+
+ if ( lr->sl_sd == AC_SOCKET_INVALID ) {
+ continue;
+ }
+
+ if ( DAEMON_ID( lr->sl_sd ) != tid ) continue;
+
+ if ( lr->sl_mute ) {
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: " SLAP_EVENT_FNAME ": "
+ "listen=%d muted\n",
+ lr->sl_sd );
+ continue;
+ }
+
+ if ( lr->sl_busy ) {
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: " SLAP_EVENT_FNAME ": "
+ "listen=%d busy\n",
+ lr->sl_sd );
+ continue;
+ }
+
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: " SLAP_EVENT_FNAME ": "
+ "listen=%d active_threads=%d tvp=%s\n",
+ lr->sl_sd, at, tvp == NULL ? "NULL" : "zero" );
+ }
+
+ SLAP_EVENT_WAIT( tid, tvp, &ns );
+ switch ( ns ) {
+ case -1: { /* failure - try again */
+ int err = sock_errno();
+
+ if ( err != EINTR ) {
+ ebadf++;
+
+ /* Don't log unless we got it twice in a row */
+ if ( !( ebadf & 1 ) ) {
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: "
+ SLAP_EVENT_FNAME
+ " failed count %d "
+ "err (%d): %s\n",
+ ebadf, err,
+ sock_errstr( err, ebuf, sizeof(ebuf) ) );
+ }
+ if ( ebadf >= SLAPD_EBADF_LIMIT ) {
+ slapd_shutdown = 2;
+ }
+ }
+ }
+ continue;
+
+ case 0: /* timeout - let threads run */
+ ebadf = 0;
+#ifndef HAVE_YIELDING_SELECT
+ Debug( LDAP_DEBUG_CONNS, "daemon: " SLAP_EVENT_FNAME
+ "timeout - yielding\n" );
+
+ ldap_pvt_thread_yield();
+#endif /* ! HAVE_YIELDING_SELECT */
+ continue;
+
+ default: /* something happened - deal with it */
+ if ( slapd_shutdown ) continue;
+
+ ebadf = 0;
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: activity on %d descriptor%s\n",
+ ns, ns != 1 ? "s" : "" );
+ /* FALL THRU */
+ }
+
+#if SLAP_EVENTS_ARE_INDEXED
+ if ( SLAP_EVENT_IS_READ( wake_sds[tid][0] ) ) {
+ char c[BUFSIZ];
+ SLAP_EVENT_CLR_READ( wake_sds[tid][0] );
+ waking = 0;
+ tcp_read( SLAP_FD2SOCK(wake_sds[tid][0]), c, sizeof(c) );
+ Debug( LDAP_DEBUG_CONNS, "daemon: waked\n" );
+ continue;
+ }
+
+ /* The event slot equals the descriptor number - this is
+ * true for Unix select and poll. We treat Windows select
+ * like this too, even though it's a kludge.
+ */
+ if ( listening )
+ for ( l = 0; slap_listeners[l] != NULL; l++ ) {
+ int rc;
+
+ if ( ns <= 0 ) break;
+ if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
+ if ( DAEMON_ID( slap_listeners[l]->sl_sd ) != tid ) continue;
+#ifdef LDAP_CONNECTIONLESS
+ if ( slap_listeners[l]->sl_is_udp ) continue;
+#endif /* LDAP_CONNECTIONLESS */
+ if ( !SLAP_EVENT_IS_READ( slap_listeners[l]->sl_sd ) ) continue;
+
+ /* clear events */
+ SLAP_EVENT_CLR_READ( slap_listeners[l]->sl_sd );
+ SLAP_EVENT_CLR_WRITE( slap_listeners[l]->sl_sd );
+ ns--;
+
+ rc = slap_listener_activate( slap_listeners[l] );
+ }
+
+ /* bypass the following tests if no descriptors left */
+ if ( ns <= 0 ) {
+#ifndef HAVE_YIELDING_SELECT
+ ldap_pvt_thread_yield();
+#endif /* HAVE_YIELDING_SELECT */
+ continue;
+ }
+
+ Debug( LDAP_DEBUG_CONNS, "daemon: activity on:" );
+ nrfds = 0;
+ nwfds = 0;
+ for ( i = 0; i < nfds; i++ ) {
+ int r, w;
+
+ r = SLAP_EVENT_IS_READ( i );
+ /* writefds was not initialized if nwriters was zero */
+ w = nwriters ? SLAP_EVENT_IS_WRITE( i ) : 0;
+ if ( r || w ) {
+ Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
+ r ? "r" : "", w ? "w" : "" );
+ if ( r ) {
+ nrfds++;
+ ns--;
+ }
+ if ( w ) {
+ nwfds++;
+ ns--;
+ }
+ }
+ if ( ns <= 0 ) break;
+ }
+ Debug( LDAP_DEBUG_CONNS, "\n" );
+
+ /* loop through the writers */
+ for ( i = 0; nwfds > 0; i++ ) {
+ ber_socket_t wd;
+ if ( ! SLAP_EVENT_IS_WRITE( i ) ) continue;
+ wd = i;
+
+ SLAP_EVENT_CLR_WRITE( wd );
+ nwfds--;
+
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: write active on %d\n",
+ wd );
+
+ /*
+ * NOTE: it is possible that the connection was closed
+ * and that the stream is now inactive.
+ * connection_write() must validate the stream is still
+ * active.
+ *
+ * ITS#4338: if the stream is invalid, there is no need to
+ * close it here. It has already been closed in connection.c.
+ */
+ if ( connection_write( wd ) < 0 ) {
+ if ( SLAP_EVENT_IS_READ( wd ) ) {
+ SLAP_EVENT_CLR_READ( (unsigned) wd );
+ nrfds--;
+ }
+ }
+ }
+
+ for ( i = 0; nrfds > 0; i++ ) {
+ ber_socket_t rd;
+ if ( ! SLAP_EVENT_IS_READ( i ) ) continue;
+ rd = i;
+ SLAP_EVENT_CLR_READ( rd );
+ nrfds--;
+
+ Debug ( LDAP_DEBUG_CONNS,
+ "daemon: read activity on %d\n", rd );
+ /*
+ * NOTE: it is possible that the connection was closed
+ * and that the stream is now inactive.
+ * connection_read() must valid the stream is still
+ * active.
+ */
+
+ connection_read_activate( rd );
+ }
+#else /* !SLAP_EVENTS_ARE_INDEXED */
+ /* FIXME */
+ /* The events are returned in an arbitrary list. This is true
+ * for /dev/poll, epoll and kqueue. In order to prioritize things
+ * so that we can handle wake_sds first, listeners second, and then
+ * all other connections last (as we do for select), we would need
+ * to use multiple event handles and cascade them.
+ *
+ * That seems like a bit of hassle. So the wake_sds check has been
+ * skipped. For epoll and kqueue we can associate arbitrary data with
+ * an event, so we could use pointers to the listener structure
+ * instead of just the file descriptor. For /dev/poll we have to
+ * search the listeners array for a matching descriptor.
+ *
+ * We now handle wake events when we see them; they are not given
+ * higher priority.
+ */
+#ifdef LDAP_DEBUG
+ Debug( LDAP_DEBUG_CONNS, "daemon: activity on:" );
+
+ for ( i = 0; i < ns; i++ ) {
+ int r, w, fd;
+
+ /* Don't log listener events */
+ if ( SLAP_EVENT_IS_LISTENER( tid, i )
+#ifdef LDAP_CONNECTIONLESS
+ && !( (SLAP_EVENT_LISTENER( tid, i ))->sl_is_udp )
+#endif /* LDAP_CONNECTIONLESS */
+ )
+ {
+ continue;
+ }
+
+ fd = SLAP_EVENT_FD( tid, i );
+ /* Don't log internal wake events */
+ if ( fd == wake_sds[tid][0] ) continue;
+
+#ifdef HAVE_KQUEUE
+ r = SLAP_EVENT_IS_READ( tid, i );
+ w = SLAP_EVENT_IS_WRITE( tid, i );
+#else
+ r = SLAP_EVENT_IS_READ( i );
+ w = SLAP_EVENT_IS_WRITE( i );
+#endif /* HAVE_KQUEUE */
+ if ( r || w ) {
+ Debug( LDAP_DEBUG_CONNS, " %d%s%s", fd,
+ r ? "r" : "", w ? "w" : "" );
+ }
+ }
+ Debug( LDAP_DEBUG_CONNS, "\n" );
+#endif /* LDAP_DEBUG */
+
+ for ( i = 0; i < ns; i++ ) {
+ int rc = 1, fd, w = 0, r = 0;
+
+ if ( SLAP_EVENT_IS_LISTENER( tid, i ) ) {
+ rc = slap_listener_activate( SLAP_EVENT_LISTENER( tid, i ) );
+ }
+
+ /* If we found a regular listener, rc is now zero, and we
+ * can skip the data portion. But if it was a UDP listener
+ * then rc is still 1, and we want to handle the data.
+ */
+ if ( rc ) {
+ fd = SLAP_EVENT_FD( tid, i );
+
+ /* Handle wake events */
+ if ( fd == wake_sds[tid][0] ) {
+ char c[BUFSIZ];
+ waking = 0;
+ (void)!tcp_read( SLAP_FD2SOCK(wake_sds[tid][0]), c, sizeof(c) );
+ continue;
+ }
+
+#ifdef HAVE_KQUEUE
+ if ( SLAP_EVENT_IS_WRITE( tid, i ) )
+#else
+ if ( SLAP_EVENT_IS_WRITE( i ) )
+#endif /* HAVE_KQUEUE */
+ {
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: write active on %d\n",
+ fd );
+
+ SLAP_EVENT_CLR_WRITE( i );
+ w = 1;
+
+ /*
+ * NOTE: it is possible that the connection was closed
+ * and that the stream is now inactive.
+ * connection_write() must valid the stream is still
+ * active.
+ */
+ if ( connection_write( fd ) < 0 ) {
+ continue;
+ }
+ }
+ /* If event is a read */
+#ifdef HAVE_KQUEUE
+ if ( SLAP_EVENT_IS_READ( tid, i ))
+#else
+ if ( SLAP_EVENT_IS_READ( i ))
+#endif /* HAVE_KQUEUE */
+ {
+ r = 1;
+ Debug( LDAP_DEBUG_CONNS,
+ "daemon: read active on %d\n",
+ fd );
+
+ SLAP_EVENT_CLR_READ( i );
+ connection_read_activate( fd );
+ } else if ( !w ) {
+#ifdef HAVE_EPOLL
+ /* Don't keep reporting the hangup
+ */
+ if ( SLAP_SOCK_IS_ACTIVE( tid, fd )) {
+ SLAP_EPOLL_SOCK_SET( tid, fd, EPOLLET );
+ }
+#endif
+ }
+ }
+ }
+#endif /* SLAP_EVENTS_ARE_INDEXED */
+
+ /* Was number of listener threads decreased? */
+ if ( ldap_pvt_thread_pool_pausecheck_native( &connection_pool )) {
+ /* decreased, let this thread finish */
+ if ( tid >= slapd_daemon_threads )
+ break;
+ }
+
+#ifndef HAVE_YIELDING_SELECT
+ ldap_pvt_thread_yield();
+#endif /* ! HAVE_YIELDING_SELECT */
+ }
+
+ /* Only thread 0 handles shutdown */
+ if ( tid )
+ return NULL;
+
+ if ( slapd_shutdown == 1 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: shutdown requested and initiated.\n" );
+
+ } else if ( slapd_shutdown == 2 ) {
+#ifdef HAVE_NT_SERVICE_MANAGER
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: shutdown initiated by Service Manager.\n" );
+#else /* !HAVE_NT_SERVICE_MANAGER */
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: abnormal condition, shutdown initiated.\n" );
+#endif /* !HAVE_NT_SERVICE_MANAGER */
+ } else {
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: no active streams, shutdown initiated.\n" );
+ }
+
+ close_listeners( 1 );
+
+ if ( !slapd_gentle_shutdown ) {
+ slapd_abrupt_shutdown = 1;
+ connections_shutdown();
+ }
+
+#ifdef HAVE_KQUEUE
+ close( slap_daemon[tid].sd_kq );
+#endif
+
+ if ( LogTest( LDAP_DEBUG_ANY )) {
+ int t = ldap_pvt_thread_pool_backload( &connection_pool );
+ Debug( LDAP_DEBUG_ANY,
+ "slapd shutdown: waiting for %d operations/tasks to finish\n",
+ t );
+ }
+ ldap_pvt_thread_pool_close( &connection_pool, 1 );
+
+ return NULL;
+}
+
+typedef struct slap_tid_waiter {
+ int num_tids;
+ ldap_pvt_thread_t tids[0];
+} slap_tid_waiter;
+
+static void *
+slapd_daemon_tid_cleanup(
+ void *ctx,
+ void *ptr )
+{
+ slap_tid_waiter *tids = ptr;
+ int i;
+
+ for ( i=0; i<tids->num_tids; i++ )
+ ldap_pvt_thread_join( tids->tids[i], (void *)NULL );
+ ch_free( ptr );
+ return NULL;
+}
+
+int
+slapd_daemon_resize( int newnum )
+{
+ int i, rc;
+
+ if ( newnum == slapd_daemon_threads )
+ return 0;
+
+ /* wake up all current listener threads */
+ for ( i=0; i<slapd_daemon_threads; i++ )
+ WAKE_LISTENER(i,1);
+
+ /* mutexes may not survive realloc, so destroy & recreate later */
+ for ( i=0; i<slapd_daemon_threads; i++ )
+ ldap_pvt_thread_mutex_destroy( &slap_daemon[i].sd_mutex );
+
+ if ( newnum > slapd_daemon_threads ) {
+ wake_sds = ch_realloc( wake_sds, newnum * sizeof( sdpair ));
+ slap_daemon = ch_realloc( slap_daemon, newnum * sizeof( slap_daemon_st ));
+
+ for ( i=slapd_daemon_threads; i<newnum; i++ )
+ {
+ memset( &slap_daemon[i], 0, sizeof( slap_daemon_st ));
+ if( (rc = lutil_pair( wake_sds[i] )) < 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: lutil_pair() failed rc=%d\n", rc );
+ return rc;
+ }
+ ber_pvt_socket_set_nonblock( wake_sds[i][1], 1 );
+
+ SLAP_SOCK_INIT(i);
+ }
+
+ for ( i=0; i<newnum; i++ )
+ ldap_pvt_thread_mutex_init( &slap_daemon[i].sd_mutex );
+
+ slapd_socket_realloc( newnum );
+
+ for ( i=slapd_daemon_threads; i<newnum; i++ )
+ {
+ /* listener as a separate THREAD */
+ rc = ldap_pvt_thread_create( &slap_daemon[i].sd_tid,
+ 0, slapd_daemon_task, &slap_daemon[i] );
+
+ if ( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "listener ldap_pvt_thread_create failed (%d)\n", rc );
+ return rc;
+ }
+ }
+ } else {
+ int j;
+ slap_tid_waiter *tids = ch_malloc( sizeof(slap_tid_waiter) +
+ ((slapd_daemon_threads - newnum) * sizeof(ldap_pvt_thread_t )));
+ slapd_socket_realloc( newnum );
+ tids->num_tids = slapd_daemon_threads - newnum;
+ for ( i=newnum, j=0; i<slapd_daemon_threads; i++, j++ ) {
+ tids->tids[j] = slap_daemon[i].sd_tid;
+#ifdef HAVE_WINSOCK
+ if ( wake_sds[i][1] != INVALID_SOCKET &&
+ SLAP_FD2SOCK( wake_sds[i][1] ) != SLAP_FD2SOCK( wake_sds[i][0] ))
+#endif /* HAVE_WINSOCK */
+ tcp_close( SLAP_FD2SOCK(wake_sds[i][1]) );
+#ifdef HAVE_WINSOCK
+ if ( wake_sds[i][0] != INVALID_SOCKET )
+#endif /* HAVE_WINSOCK */
+ tcp_close( SLAP_FD2SOCK(wake_sds[i][0]) );
+
+ SLAP_SOCK_DESTROY( i );
+ }
+
+ wake_sds = ch_realloc( wake_sds, newnum * sizeof( sdpair ));
+ slap_daemon = ch_realloc( slap_daemon, newnum * sizeof( slap_daemon_st ));
+ for ( i=0; i<newnum; i++ )
+ ldap_pvt_thread_mutex_init( &slap_daemon[i].sd_mutex );
+ ldap_pvt_thread_pool_submit( &connection_pool,
+ slapd_daemon_tid_cleanup, (void *) tids );
+ }
+ slapd_daemon_threads = newnum;
+ slapd_daemon_mask = newnum - 1;
+ return 0;
+}
+
+#ifdef LDAP_CONNECTIONLESS
+static int
+connectionless_init( void )
+{
+ int l;
+
+ for ( l = 0; slap_listeners[l] != NULL; l++ ) {
+ Listener *lr = slap_listeners[l];
+ Connection *c;
+
+ if ( !lr->sl_is_udp ) {
+ continue;
+ }
+
+ c = connection_init( lr->sl_sd, lr, "", "",
+ CONN_IS_UDP, (slap_ssf_t) 0, NULL
+ LDAP_PF_LOCAL_SENDMSG_ARG(NULL));
+
+ if ( !c ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "connectionless_init: failed on %s (%d)\n",
+ lr->sl_url.bv_val, lr->sl_sd );
+ return -1;
+ }
+ lr->sl_is_udp++;
+ }
+
+ return 0;
+}
+#endif /* LDAP_CONNECTIONLESS */
+
+int
+slapd_daemon( void )
+{
+ int i, rc;
+
+#ifdef LDAP_CONNECTIONLESS
+ connectionless_init();
+#endif /* LDAP_CONNECTIONLESS */
+
+ SLAP_SOCK_INIT2();
+
+ /* daemon_init only inits element 0 */
+ for ( i=1; i<slapd_daemon_threads; i++ )
+ {
+ ldap_pvt_thread_mutex_init( &slap_daemon[i].sd_mutex );
+
+ if( (rc = lutil_pair( wake_sds[i] )) < 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "daemon: lutil_pair() failed rc=%d\n", rc );
+ return rc;
+ }
+ ber_pvt_socket_set_nonblock( wake_sds[i][1], 1 );
+
+ SLAP_SOCK_INIT(i);
+ }
+
+ for ( i=0; i<slapd_daemon_threads; i++ )
+ {
+ /* listener as a separate THREAD */
+ rc = ldap_pvt_thread_create( &slap_daemon[i].sd_tid,
+ 0, slapd_daemon_task, &slap_daemon[i] );
+
+ if ( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "listener ldap_pvt_thread_create failed (%d)\n", rc );
+ return rc;
+ }
+ }
+
+ ldap_pvt_thread_mutex_lock( &slapd_init_mutex );
+ while ( !slapd_ready && !slapd_shutdown ) {
+ ldap_pvt_thread_cond_wait( &slapd_init_cond, &slapd_init_mutex );
+ }
+ ldap_pvt_thread_mutex_unlock( &slapd_init_mutex );
+
+ if ( slapd_shutdown ) {
+ Debug( LDAP_DEBUG_ANY,
+ "listener initialization failed\n" );
+ return 1;
+ }
+
+#ifdef HAVE_SYSTEMD
+ rc = sd_notify( 1, "READY=1" );
+ if ( rc < 0 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "systemd sd_notify failed (%d)\n", rc );
+ }
+#endif /* HAVE_SYSTEMD */
+
+ /* wait for the listener threads to complete */
+ for ( i=0; i<slapd_daemon_threads; i++ )
+ ldap_pvt_thread_join( slap_daemon[i].sd_tid, (void *)NULL );
+
+ destroy_listeners();
+
+ return 0;
+}
+
+static int
+sockinit( void )
+{
+#if defined( HAVE_WINSOCK2 )
+ WORD wVersionRequested;
+ WSADATA wsaData;
+ int err;
+
+ wVersionRequested = MAKEWORD( 2, 0 );
+
+ err = WSAStartup( wVersionRequested, &wsaData );
+ if ( err != 0 ) {
+ /* Tell the user that we couldn't find a usable */
+ /* WinSock DLL. */
+ return -1;
+ }
+
+ /* Confirm that the WinSock DLL supports 2.0.*/
+ /* Note that if the DLL supports versions greater */
+ /* than 2.0 in addition to 2.0, it will still return */
+ /* 2.0 in wVersion since that is the version we */
+ /* requested. */
+
+ if ( LOBYTE( wsaData.wVersion ) != 2 ||
+ HIBYTE( wsaData.wVersion ) != 0 )
+ {
+ /* Tell the user that we couldn't find a usable */
+ /* WinSock DLL. */
+ WSACleanup();
+ return -1;
+ }
+
+ /* The WinSock DLL is acceptable. Proceed. */
+#elif defined( HAVE_WINSOCK )
+ WSADATA wsaData;
+ if ( WSAStartup( 0x0101, &wsaData ) != 0 ) return -1;
+#endif /* ! HAVE_WINSOCK2 && ! HAVE_WINSOCK */
+
+ return 0;
+}
+
+static int
+sockdestroy( void )
+{
+#if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
+ WSACleanup();
+#endif /* HAVE_WINSOCK2 || HAVE_WINSOCK */
+
+ return 0;
+}
+
+RETSIGTYPE
+slap_sig_shutdown( int sig )
+{
+ int save_errno = errno;
+ int i;
+
+#if 0
+ Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig);
+#endif
+
+ /*
+ * If the NT Service Manager is controlling the server, we don't
+ * want SIGBREAK to kill the server. For some strange reason,
+ * SIGBREAK is generated when a user logs out.
+ */
+
+#if defined(HAVE_NT_SERVICE_MANAGER) && defined(SIGBREAK)
+ if (is_NT_Service && sig == SIGBREAK) {
+ /* empty */;
+ } else
+#endif /* HAVE_NT_SERVICE_MANAGER && SIGBREAK */
+#ifdef SIGHUP
+ if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0) {
+ slapd_gentle_shutdown = 1;
+ } else
+#endif /* SIGHUP */
+ {
+ slapd_shutdown = 1;
+ }
+
+ for (i=0; i<slapd_daemon_threads; i++) {
+ WAKE_LISTENER(i,1);
+ }
+
+ /* reinstall self */
+ (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
+
+ errno = save_errno;
+}
+
+RETSIGTYPE
+slap_sig_wake( int sig )
+{
+ int save_errno = errno;
+
+ WAKE_LISTENER(0,1);
+
+ /* reinstall self */
+ (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
+
+ errno = save_errno;
+}
+
+int
+slap_pause_server( void )
+{
+ BackendInfo *bi;
+ int rc = LDAP_SUCCESS;
+
+ rc = ldap_pvt_thread_pool_pause( &connection_pool );
+
+ LDAP_STAILQ_FOREACH(bi, &backendInfo, bi_next) {
+ if ( bi->bi_pause ) {
+ rc = bi->bi_pause( bi );
+ if ( rc != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY, "slap_pause_server: "
+ "bi_pause failed for backend %s\n",
+ bi->bi_type );
+ return rc;
+ }
+ }
+ }
+
+ return rc;
+}
+
+int
+slap_unpause_server( void )
+{
+ BackendInfo *bi;
+ int rc = LDAP_SUCCESS;
+
+ LDAP_STAILQ_FOREACH(bi, &backendInfo, bi_next) {
+ if ( bi->bi_unpause ) {
+ rc = bi->bi_unpause( bi );
+ if ( rc != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY, "slap_unpause_server: "
+ "bi_unpause failed for backend %s\n",
+ bi->bi_type );
+ return rc;
+ }
+ }
+ }
+
+ rc = ldap_pvt_thread_pool_resume( &connection_pool );
+ return rc;
+}
+
+
+void
+slapd_add_internal( ber_socket_t s, int isactive )
+{
+ if (!isactive) {
+ SET_CLOSE(s);
+ }
+ slapd_add( s, isactive, NULL, -1 );
+}
+
+Listener **
+slapd_get_listeners( void )
+{
+ /* Could return array with no listeners if !listening, but current
+ * callers mostly look at the URLs. E.g. syncrepl uses this to
+ * identify the server, which means it wants the startup arguments.
+ */
+ return slap_listeners;
+}
+
+/* Reject all incoming requests */
+void
+slap_suspend_listeners( void )
+{
+ int i;
+ for (i=0; slap_listeners[i]; i++) {
+ slap_listeners[i]->sl_mute = 1;
+ listen( slap_listeners[i]->sl_sd, 0 );
+ }
+}
+
+/* Resume after a suspend */
+void
+slap_resume_listeners( void )
+{
+ int i;
+ for (i=0; slap_listeners[i]; i++) {
+ slap_listeners[i]->sl_mute = 0;
+ listen( slap_listeners[i]->sl_sd, SLAPD_LISTEN_BACKLOG );
+ }
+}
+
+void
+slap_wake_listener()
+{
+ WAKE_LISTENER(0,1);
+}
+
+/* return 0 on timeout, 1 on writer ready
+ * -1 on general error
+ */
+int
+slapd_wait_writer( ber_socket_t sd )
+{
+#ifdef HAVE_WINSOCK
+ fd_set writefds;
+ struct timeval tv, *tvp;
+
+ FD_ZERO( &writefds );
+ FD_SET( slapd_ws_sockets[sd], &writefds );
+ if ( global_writetimeout ) {
+ tv.tv_sec = global_writetimeout;
+ tv.tv_usec = 0;
+ tvp = &tv;
+ } else {
+ tvp = NULL;
+ }
+ return select( 0, NULL, &writefds, NULL, tvp );
+#else
+ struct pollfd fds;
+ int timeout = global_writetimeout ? global_writetimeout * 1000 : -1;
+
+ fds.fd = sd;
+ fds.events = POLLOUT;
+
+ return poll( &fds, 1, timeout );
+#endif
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-06 21:26:03 +0000