diff --git a/src/event/ngx_event.c b/src/event/ngx_event.c
index 728dbde..70b1753 100644
--- a/src/event/ngx_event.c
+++ b/src/event/ngx_event.c
@@ -187,16 +187,6 @@
     size = 128            /* ngx_accept_mutex */
            + 128;         /* ngx_connection_counter */
 
-#if 0
-    shared = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED, -1, 0);
-
-    if (shared == MAP_FAILED) {
-        ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
-                      "mmap(MAP_ANON|MAP_SHARED) failed");
-        return NGX_ERROR;
-    }
-#endif
-
     if (!(shared = ngx_create_shared_memory(size, cycle->log))) {
         return NGX_ERROR;
     }
@@ -635,6 +625,9 @@
 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
 {
     ngx_event_conf_t  *ecf = conf;
+#if (HAVE_RTSIG)
+    ngx_core_conf_t  *ccf;
+#endif
 
 #if (HAVE_KQUEUE)
 
@@ -656,8 +649,6 @@
 
 #elif (HAVE_RTSIG)
 
-    ngx_core_conf_t  *ccf;
-
     ngx_conf_init_unsigned_value(ecf->connections, DEFAULT_CONNECTIONS);
     ngx_conf_init_unsigned_value(ecf->use, ngx_rtsig_module.ctx_index);
     ngx_conf_init_ptr_value(ecf->name, ngx_rtsig_module_ctx.name->data);
diff --git a/src/os/unix/ngx_process.c b/src/os/unix/ngx_process.c
index 3d05a35..d2c1e30 100644
--- a/src/os/unix/ngx_process.c
+++ b/src/os/unix/ngx_process.c
@@ -6,9 +6,9 @@
 
 static void ngx_execute_proc(ngx_cycle_t *cycle, void *data);
 
-ngx_int_t      ngx_current_slot;
-ngx_int_t      ngx_last_process;
+ngx_int_t      ngx_process_slot;
 ngx_socket_t   ngx_channel;
+ngx_int_t      ngx_last_process;
 ngx_process_t  ngx_processes[NGX_MAX_PROCESSES];
 
 
@@ -31,6 +31,18 @@
         return NGX_ERROR;
     }
 
+    if (ngx_nonblocking(ngx_processes[s].channel[0]) == -1) {
+        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+                      ngx_nonblocking_n " failed while spawning \"%s\"", name);
+        return NGX_ERROR;
+    }
+
+    if (ngx_nonblocking(ngx_processes[s].channel[1]) == -1) {
+        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+                      ngx_nonblocking_n " failed while spawning \"%s\"", name);
+        return NGX_ERROR;
+    }
+
     on = 1;
     if (ioctl(ngx_processes[s].channel[0], FIOASYNC, &on) == -1) {
         ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
@@ -45,7 +57,7 @@
     }
 
     ngx_channel = ngx_processes[s].channel[1];
-    ngx_current_slot = s;
+    ngx_process_slot = s;
 
 
     pid = fork();
diff --git a/src/os/unix/ngx_process.h b/src/os/unix/ngx_process.h
index 9b7ae44..99374eb 100644
--- a/src/os/unix/ngx_process.h
+++ b/src/os/unix/ngx_process.h
@@ -49,9 +49,9 @@
 void ngx_process_get_status(void);
 
 extern ngx_pid_t      ngx_pid;
-extern ngx_int_t      ngx_current_slot;
-extern ngx_int_t      ngx_last_process;
 extern ngx_socket_t   ngx_channel;
+extern ngx_int_t      ngx_process_slot;
+extern ngx_int_t      ngx_last_process;
 extern ngx_process_t  ngx_processes[NGX_MAX_PROCESSES];
 
 
diff --git a/src/os/unix/ngx_process_cycle.c b/src/os/unix/ngx_process_cycle.c
index 5e230d9..d1da063 100644
--- a/src/os/unix/ngx_process_cycle.c
+++ b/src/os/unix/ngx_process_cycle.c
@@ -334,13 +334,33 @@
 static void ngx_start_worker_processes(ngx_cycle_t *cycle, ngx_int_t n,
                                        ngx_int_t type)
 {
+    ngx_int_t         i;
+    ngx_channel_t     ch;
     struct itimerval  itv;
 
     ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "start worker processes");
 
+    ch.command = NGX_CMD_OPEN_CHANNEL;
+
     while (n--) {
         ngx_spawn_process(cycle, ngx_worker_process_cycle, NULL,
                           "worker process", type);
+
+        ch.pid = ngx_processes[ngx_process_slot].pid;
+        ch.slot = ngx_process_slot;
+        ch.fd = ngx_processes[ngx_process_slot].channel[0];
+
+        for (i = 0; i < ngx_last_process - 1; i++) {
+
+        ngx_log_debug3(NGX_LOG_DEBUG_CORE, cycle->log, 0,
+                       "pass channel s: %d pid:" PID_T_FMT " fd:%d",
+                       ch.slot, ch.pid, ch.fd);
+
+            /* TODO: NGX_AGAIN */
+
+            ngx_write_channel(ngx_processes[i].channel[0],
+                              &ch, sizeof(ngx_channel_t), cycle->log);
+        }
     }
 
     /*
@@ -360,6 +380,7 @@
     }
 }
 
+
 static void ngx_signal_worker_processes(ngx_cycle_t *cycle, int signo)
 {
     ngx_int_t      i;
@@ -529,7 +550,7 @@
 
     for (n = 0; n <= ngx_last_process; n++) {
 
-        if (n == ngx_current_slot) {
+        if (n == ngx_process_slot) {
             if (close(ngx_processes[n].channel[0]) == -1) {
                 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                               "close() failed");
@@ -681,6 +702,16 @@
     case NGX_CMD_REOPEN:
         ngx_reopen = 1;
         break;
+
+    case NGX_CMD_OPEN_CHANNEL:
+
+        ngx_log_debug3(NGX_LOG_DEBUG_CORE, ev->log, 0,
+                       "get channel s:%d pid:" PID_T_FMT " fd:%d",
+                       ch.slot, ch.pid, ch.fd);
+
+        ngx_processes[ch.slot].pid = ch.pid;
+        ngx_processes[ch.slot].channel[0] = ch.fd;
+        break;
     }
 }
 
@@ -775,7 +806,7 @@
     msg.msg_iov = iov;
     msg.msg_iovlen = 1;
 
-    n = sendmsg(s, &msg, MSG_DONTWAIT);
+    n = sendmsg(s, &msg, 0);
 
     if (n == -1) {
         err = ngx_errno;
@@ -799,7 +830,7 @@
     ngx_err_t        err;
     struct iovec     iov[1];
     struct msghdr    msg;
-    struct cmsghdr  *cm;
+    struct cmsghdr   cm;
 
     iov[0].iov_base = (char *) ch;
     iov[0].iov_len = size;
@@ -817,7 +848,7 @@
     msg.msg_accrightslen = sizeof(int);
 #endif
 
-    n = recvmsg(s, &msg, MSG_DONTWAIT);
+    n = recvmsg(s, &msg, 0);
 
     if (n == -1) {
         err = ngx_errno;
@@ -838,28 +869,21 @@
 #if (HAVE_MSGHDR_MSG_CONTROL)
 
     if (ch->command == NGX_CMD_OPEN_CHANNEL) {
-        cm = (struct cmsghdr *) msg.msg_control;
 
-        if (cm == NULL) {
-            ngx_log_error(NGX_LOG_ALERT, log, 0, 
-                          "recvmsg() returned no ancillary data");
-            return NGX_ERROR;
-        }
-
-        if (cm->cmsg_len < sizeof(struct cmsghdr) + sizeof(int)) {
+        if (cm.cmsg_len < sizeof(struct cmsghdr) + sizeof(int)) {
             ngx_log_error(NGX_LOG_ALERT, log, 0,
                           "recvmsg() returned too small ancillary data");
             return NGX_ERROR;
         }
 
-        if (cm->cmsg_level != SOL_SOCKET || cm->cmsg_type != SCM_RIGHTS) {
+        if (cm.cmsg_level != SOL_SOCKET || cm.cmsg_type != SCM_RIGHTS) {
             ngx_log_error(NGX_LOG_ALERT, log, 0,
                           "recvmsg() returned invalid ancillary data "
-                          "level %d or type %d", cm->cmsg_level, cm->cmsg_type);
+                          "level %d or type %d", cm.cmsg_level, cm.cmsg_type);
             return NGX_ERROR;
         }
 
-        ch->fd = *((int *) ((char *) cm + sizeof(struct cmsghdr)));
+        ch->fd = *((int *) ((char *) &cm + sizeof(struct cmsghdr)));
     }
 
     if (msg.msg_flags & (MSG_TRUNC|MSG_CTRUNC)) {
diff --git a/src/os/unix/ngx_process_cycle.h b/src/os/unix/ngx_process_cycle.h
index a4a3e91..7d0053a 100644
--- a/src/os/unix/ngx_process_cycle.h
+++ b/src/os/unix/ngx_process_cycle.h
@@ -16,6 +16,7 @@
 typedef struct {
      ngx_uint_t  command;
      ngx_pid_t   pid;
+     ngx_int_t   slot;
      ngx_fd_t    fd;
 } ngx_channel_t;