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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 <kbd/kbd.h>
  47. #include <unistd.h>
  48. #include <async.h>
  49. #include <sys/types.h>
  50.  
  51. static int console_phone = -1;
  52.  
  53. ssize_t write_stderr(const void *buf, size_t count)
  54. {
  55.     return count;
  56. }
  57.  
  58. ssize_t read_stdin(void *buf, size_t count)
  59. {
  60.     open_console();
  61.     if (console_phone >= 0) {
  62.         kbd_event_t ev;
  63.         int rc;
  64.         size_t i = 0;
  65.    
  66.         while (i < count) {
  67.             do {
  68.                 rc = kbd_get_event(&ev);
  69.                 if (rc < 0) return -1;
  70.             } while (ev.c == 0);
  71.  
  72.             ((char *) buf)[i++] = ev.c;
  73.         }
  74.         return i;
  75.     } else {
  76.         return -1;
  77.     }
  78. }
  79.  
  80. ssize_t write_stdout(const void *buf, size_t count)
  81. {
  82.     open_console();
  83.     if (console_phone >= 0) {
  84.         int i;
  85.    
  86.         for (i = 0; i < count; i++)
  87.             async_msg_1(console_phone, CONSOLE_PUTCHAR,
  88.                 ((const char *) buf)[i]);
  89.        
  90.         return count;
  91.     } else
  92.         return __SYSCALL3(SYS_KLOG, 1, (sysarg_t) buf, count);
  93. }
  94.  
  95. void open_console(void)
  96. {
  97.     if (console_phone < 0) {
  98.         int phone = ipc_connect_me_to(PHONE_NS, SERVICE_CONSOLE, 0, 0);
  99.         if (phone >= 0)
  100.             console_phone = phone;
  101.     }
  102. }
  103.  
  104. void close_console(void)
  105. {
  106.     if (console_phone >= 0) {
  107.         if (ipc_hangup(console_phone) == 0) {
  108.             console_phone = -1;
  109.         }
  110.     }
  111. }
  112.  
  113. void klog_update(void)
  114. {
  115.     (void) __SYSCALL3(SYS_KLOG, 1, NULL, 0);
  116. }
  117.  
  118. int get_cons_phone(void)
  119. {
  120.     open_console();
  121.     return console_phone;
  122. }
  123.  
  124. /** @}
  125.  */
  126.