StdLib/BsdSocketLib/sethostname.c

   1 /*
   2  * Copyright (c) 1999, 2000
   3  * Intel Corporation.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without modification,
   7  * are permitted provided that the following conditions are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright notice,
  10  *    this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright notice,
  13  *    this list of conditions and the following disclaimer in the documentation
  14  *    and/or other materials provided with the distribution.
  15  *
  16  * 3. All advertising materials mentioning features or use of this software must
  17  *    display the following acknowledgement:
  18  *
  19  *    This product includes software developed by Intel Corporation and its
  20  *    contributors.
  21  *
  22  * 4. Neither the name of Intel Corporation or its contributors may be used to
  23  *    endorse or promote products derived from this software without specific
  24  *    prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  28  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  29  * DISCLAIMED.  IN NO EVENT SHALL INTEL CORPORATION OR CONTRIBUTORS BE LIABLE FOR
  30  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  31  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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  35  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  */
  38
  39 #include <errno.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <Uefi.h>
  43 #include <unistd.h>
  44 #include <wchar.h>
  45
  46 /*++
  47
  48 Module Name:
  49
  50     sethostname.c
  51
  52 Abstract:
  53
  54     Map FreeBSD sethostname call to EFI Interface
  55
  56
  57 Revision History
  58
  59 --*/
  60
  61 int
  62 sethostname(
  63   const char * name,
  64   size_t namelen
  65   )
  66 /*++
  67
  68 Routine Description:
  69
  70     Set the hostname for this system.
  71
  72 Arguments:
  73
  74   name    - Pointer to hostname.
  75   namelen   - Length of name
  76
  77 Returns:
  78
  79   0 on success, -1 if not set
  80
  81 --*/
  82 {
  83   int SetStatus;
  84   char * pName;
  85
  86   //
  87   //  Allocate a new buffer for name since the input value
  88   //  does not need to be zero terminated
  89   //
  90   pName = malloc ( namelen + 1 );
  91   if ( NULL == pName ) {
  92     errno = ENOMEM;
  93     SetStatus = -1;
  94   }
  95   else {
  96     //
  97     //  Create a zero terminated string for name
  98     //
  99     memcpy ( pName, name, namelen );
 100     pName [ namelen ] = 0;
 101
 102     //
 103     //  Set the environment variable
 104     //
 105     SetStatus = setenv ("HOSTNAME", pName, TRUE);
 106
 107     //
 108     //  Free the temporary buffer
 109     //
 110     free ( pName );
 111   }
 112
 113   //
 114   //  Return the results
 115   //
 116   return SetStatus;
 117 }