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  1. /*
  2.  * Copyright (c) 2006 Ondrej Palkovsky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup ns
  30.  * @{
  31.  */
  32.  
  33. /**
  34.  * @file  ns.c
  35.  * @brief Naming service for HelenOS IPC.
  36.  */
  37.  
  38. #include <ipc/ipc.h>
  39. #include <ipc/services.h>
  40. #include <ipc/ns.h>
  41. #include <unistd.h>
  42. #include <stdio.h>
  43. #include <errno.h>
  44. #include <as.h>
  45. #include <ddi.h>
  46. #include <event.h>
  47. #include <macros.h>
  48. #include <sysinfo.h>
  49. #include "ns.h"
  50. #include "service.h"
  51. #include "clonable.h"
  52. #include "task.h"
  53.  
  54. static void *clockaddr = NULL;
  55. static void *klogaddr = NULL;
  56.  
  57. static void get_as_area(ipc_callid_t callid, ipc_call_t *call, void *ph_addr,
  58.     size_t pages, void **addr)
  59. {
  60.     if (ph_addr == NULL) {
  61.         ipc_answer_0(callid, ENOENT);
  62.         return;
  63.     }
  64.    
  65.     if (*addr == NULL) {
  66.         *addr = as_get_mappable_page(pages * PAGE_SIZE);
  67.        
  68.         if (*addr == NULL) {
  69.             ipc_answer_0(callid, ENOENT);
  70.             return;
  71.         }
  72.        
  73.         if (physmem_map(ph_addr, *addr, pages,
  74.             AS_AREA_READ | AS_AREA_CACHEABLE) != 0) {
  75.             ipc_answer_0(callid, ENOENT);
  76.             return;
  77.         }
  78.     }
  79.    
  80.     ipc_answer_2(callid, EOK, (ipcarg_t) *addr, AS_AREA_READ);
  81. }
  82.  
  83. int main(int argc, char **argv)
  84. {
  85.     printf(NAME ": HelenOS IPC Naming Service\n");
  86.    
  87.     int rc = service_init();
  88.     if (rc != EOK)
  89.         return rc;
  90.    
  91.     rc = clonable_init();
  92.     if (rc != EOK)
  93.         return rc;
  94.    
  95.     rc = task_init();
  96.     if (rc != EOK)
  97.         return rc;
  98.    
  99.     printf(NAME ": Accepting connections\n");
  100.    
  101.     while (true) {
  102.         process_pending_conn();
  103.         process_pending_wait();
  104.        
  105.         ipc_call_t call;
  106.         ipc_callid_t callid = ipc_wait_for_call(&call);
  107.        
  108.         task_id_t id;
  109.         ipcarg_t retval;
  110.        
  111.         switch (IPC_GET_METHOD(call)) {
  112.         case IPC_M_SHARE_IN:
  113.             switch (IPC_GET_ARG3(call)) {
  114.             case SERVICE_MEM_REALTIME:
  115.                 get_as_area(callid, &call,
  116.                     (void *) sysinfo_value("clock.faddr"),
  117.                     1, &clockaddr);
  118.                 break;
  119.             case SERVICE_MEM_KLOG:
  120.                 get_as_area(callid, &call,
  121.                     (void *) sysinfo_value("klog.faddr"),
  122.                     sysinfo_value("klog.pages"), &klogaddr);
  123.                 break;
  124.             default:
  125.                 ipc_answer_0(callid, ENOENT);
  126.             }
  127.             continue;
  128.         case IPC_M_PHONE_HUNGUP:
  129.             retval = ns_task_disconnect(&call);
  130.             break;
  131.         case IPC_M_CONNECT_TO_ME:
  132.             /*
  133.              * Server requests service registration.
  134.              */
  135.             if (service_clonable(IPC_GET_ARG1(call))) {
  136.                 register_clonable(IPC_GET_ARG1(call),
  137.                     IPC_GET_ARG5(call), &call, callid);
  138.                 continue;
  139.             } else {
  140.                 retval = register_service(IPC_GET_ARG1(call),
  141.                     IPC_GET_ARG5(call), &call);
  142.             }
  143.             break;
  144.         case IPC_M_CONNECT_ME_TO:
  145.             /*
  146.              * Client requests to be connected to a service.
  147.              */
  148.             if (service_clonable(IPC_GET_ARG1(call))) {
  149.                 connect_to_clonable(IPC_GET_ARG1(call),
  150.                     &call, callid);
  151.                 continue;
  152.             } else {
  153.                 connect_to_service(IPC_GET_ARG1(call), &call,
  154.                     callid);
  155.                 continue;
  156.             }
  157.             break;
  158.         case NS_PING:
  159.             retval = EOK;
  160.             break;
  161.         case NS_TASK_WAIT:
  162.             id = (task_id_t)
  163.                 MERGE_LOUP32(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
  164.             wait_for_task(id, &call, callid);
  165.             continue;
  166.         case NS_ID_INTRO:
  167.             retval = ns_task_id_intro(&call);
  168.             break;
  169.         case NS_RETVAL:
  170.             retval = ns_task_retval(&call);
  171.             break;
  172.         default:
  173.             retval = ENOENT;
  174.             break;
  175.         }
  176.        
  177.         if (!(callid & IPC_CALLID_NOTIFICATION))
  178.             ipc_answer_0(callid, retval);
  179.     }
  180.    
  181.     /* Not reached */
  182.     return 0;
  183. }
  184.  
  185. /**
  186.  * @}
  187.  */
  188.