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  1. /*
  2.  * Copyright (c) 2006 Josef Cejka
  3.  * Copyright (c) 2006 Jakub Vana
  4.  * All rights reserved.
  5.  *
  6.  * Redistribution and use in source and binary forms, with or without
  7.  * modification, are permitted provided that the following conditions
  8.  * are met:
  9.  *
  10.  * - Redistributions of source code must retain the above copyright
  11.  *   notice, this list of conditions and the following disclaimer.
  12.  * - Redistributions in binary form must reproduce the above copyright
  13.  *   notice, this list of conditions and the following disclaimer in the
  14.  *   documentation and/or other materials provided with the distribution.
  15.  * - The name of the author may not be used to endorse or promote products
  16.  *   derived from this software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28.  */
  29.  
  30. /** @addtogroup libc
  31.  * @{
  32.  */
  33. /** @file
  34.  */
  35.  
  36. #include <io/io.h>
  37. #include <io/stream.h>
  38. #include <string.h>
  39. #include <malloc.h>
  40. #include <libc.h>
  41. #include <ipc/ipc.h>
  42. #include <ipc/ns.h>
  43. #include <ipc/fb.h>
  44. #include <ipc/services.h>
  45. #include <ipc/console.h>
  46. #include <unistd.h>
  47. #include <async.h>
  48. #include <sys/types.h>
  49.  
  50. static int console_phone = -1;
  51.  
  52. ssize_t write_stderr(const void *buf, size_t count)
  53. {
  54.     return count;
  55. }
  56.  
  57. ssize_t read_stdin(void *buf, size_t count)
  58. {
  59.     open_console();
  60.     if (console_phone >= 0) {
  61.         ipcarg_t r0, r1;
  62.         size_t i = 0;
  63.    
  64.         while (i < count) {
  65.             if (async_req_0_2(console_phone, CONSOLE_GETCHAR, &r0, &r1) < 0)
  66.                 return -1;
  67.             ((char *) buf)[i++] = r0;
  68.         }
  69.         return i;
  70.     } else {
  71.         return -1;
  72.     }
  73. }
  74.  
  75. ssize_t write_stdout(const void *buf, size_t count)
  76. {
  77.     open_console();
  78.     if (console_phone >= 0) {
  79.         int i;
  80.    
  81.         for (i = 0; i < count; i++)
  82.             async_msg_1(console_phone, CONSOLE_PUTCHAR,
  83.                 ((const char *) buf)[i]);
  84.        
  85.         return count;
  86.     } else
  87.         return __SYSCALL3(SYS_KLOG, 1, (sysarg_t) buf, count);
  88. }
  89.  
  90. void open_console(void)
  91. {
  92.     if (console_phone < 0) {
  93.         int phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0, 0);
  94.         if (phone >= 0)
  95.             console_phone = phone;
  96.     }
  97. }
  98.  
  99. void close_console(void)
  100. {
  101.     if (console_phone >= 0) {
  102.         if (ipc_hangup(console_phone) == 0) {
  103.             console_phone = -1;
  104.         }
  105.     }
  106. }
  107.  
  108. void klog_update(void)
  109. {
  110.     (void) __SYSCALL3(SYS_KLOG, 1, NULL, 0);
  111. }
  112.  
  113. int get_cons_phone(void)
  114. {
  115.     open_console();
  116.     return console_phone;
  117. }
  118.  
  119. /** @}
  120.  */
  121.