AppPkg/Applications/Sockets/SetHostName/SetHostName.c

   1 /** @file
   2   Set the host name
   3
   4   Copyright (c) 2011, Intel Corporation
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include <errno.h>
  16 #include <string.h>
  17 #include <Uefi.h>
  18 #include <unistd.h>
  19
  20 #include <Library/DebugLib.h>
  21 #include <Library/UefiLib.h>
  22
  23 #include <sys/socket.h>
  24
  25 char mBuffer[65536];
  26
  27
  28 /**
  29   Set the host name
  30
  31   @param [in] Argc  The number of arguments
  32   @param [in] Argv  The argument value array
  33
  34   @retval  0        The application exited normally.
  35   @retval  Other    An error occurred.
  36 **/
  37 int
  38 main (
  39   IN int Argc,
  40   IN char **Argv
  41   )
  42 {
  43   int AppStatus;
  44
  45   DEBUG (( DEBUG_INFO,
  46             "%a starting\r\n",
  47             Argv[0]));
  48
  49   //
  50   //  Determine if the host name is specified
  51   //
  52   AppStatus = 0;
  53   if ( 1 < Argc ) {
  54     //
  55     //  Set the host name
  56     //
  57     AppStatus = sethostname ( Argv[1], strlen ( Argv[1]));
  58     if ( -1 == AppStatus ) {
  59       switch ( errno ) {
  60       default:
  61         Print ( L"ERROR - errno: %d\r\n", errno );
  62         break;
  63
  64       case ENODEV:
  65         Print ( L"WARNING - Plarform does not support permanent storage!\r\n" );
  66         break;
  67
  68       case ENOMEM:
  69         Print ( L"ERROR - Insufficient storage to save host name!\r\n" );
  70         break;
  71
  72       case ENOTSUP:
  73         Print ( L"ERROR - Platform does not support environment variable storage!\r\n" );
  74         break;
  75       }
  76     }
  77   }
  78   else {
  79     //
  80     //  Display the current host name
  81     //
  82     AppStatus = gethostname ( &mBuffer[0], sizeof ( mBuffer ));
  83     if ( -1 == AppStatus ) {
  84       Print ( L"ERROR - Unable to get host name, errno: %d\r\n", errno );
  85     }
  86     else {
  87       if ( 0 == mBuffer[0]) {
  88         Print ( L"Host name is not set!\r\n" );
  89       }
  90       else {
  91         Print ( L"Host name: %a", &mBuffer[0]);
  92       }
  93     }
  94   }
  95
  96   //
  97   //  All done
  98   //
  99   return errno;
 100 }