AppPkg/Applications/Sockets/SetHostName/SetHostName.c

   1 /** @file
   2   Set the host name
   3
   4   Copyright (c) 2011-2012, Intel Corporation. All rights reserved.
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include <errno.h>
  10 #include <string.h>
  11 #include <Uefi.h>
  12 #include <unistd.h>
  13
  14 #include <Library/DebugLib.h>
  15 #include <Library/UefiLib.h>
  16
  17 #include <sys/socket.h>
  18
  19 char mBuffer[65536];
  20
  21
  22 /**
  23   Set the host name
  24
  25   @param [in] Argc  The number of arguments
  26   @param [in] Argv  The argument value array
  27
  28   @retval  0        The application exited normally.
  29   @retval  Other    An error occurred.
  30 **/
  31 int
  32 main (
  33   IN int Argc,
  34   IN char **Argv
  35   )
  36 {
  37   int AppStatus;
  38
  39   DEBUG (( DEBUG_INFO,
  40             "%a starting\r\n",
  41             Argv[0]));
  42
  43   //
  44   //  Determine if the host name is specified
  45   //
  46   AppStatus = 0;
  47   if ( 1 < Argc ) {
  48     //
  49     //  Set the host name
  50     //
  51     AppStatus = sethostname ( Argv[1], strlen ( Argv[1]));
  52     if ( -1 == AppStatus ) {
  53       switch ( errno ) {
  54       default:
  55         Print ( L"ERROR - errno: %d\r\n", errno );
  56         break;
  57
  58       case ENODEV:
  59         Print ( L"WARNING - Plarform does not support permanent storage!\r\n" );
  60         break;
  61
  62       case ENOMEM:
  63         Print ( L"ERROR - Insufficient storage to save host name!\r\n" );
  64         break;
  65
  66       case ENOTSUP:
  67         Print ( L"ERROR - Platform does not support environment variable storage!\r\n" );
  68         break;
  69       }
  70     }
  71   }
  72   else {
  73     //
  74     //  Display the current host name
  75     //
  76     AppStatus = gethostname ( &mBuffer[0], sizeof ( mBuffer ));
  77     if ( -1 == AppStatus ) {
  78       Print ( L"ERROR - Unable to get host name, errno: %d\r\n", errno );
  79     }
  80     else {
  81       if ( 0 == mBuffer[0]) {
  82         Print ( L"Host name is not set!\r\n" );
  83       }
  84       else {
  85         Print ( L"Host name: %a", &mBuffer[0]);
  86       }
  87     }
  88   }
  89
  90   //
  91   //  All done
  92   //
  93   return errno;
  94 }