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      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;
     32  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     33  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     34  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     35  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     36  *
     37  */
     38 
     39 #include <stdlib.h>
     40 #include <string.h>
     41 #include <unistd.h>
     42 
     43 /*++
     44 
     45 Module Name:
     46 
     47     gethostname.c
     48 
     49 Abstract:
     50 
     51     Map FreeBSD gethostname call to EFI Interface
     52 
     53 
     54 Revision History
     55 
     56 --*/
     57 
     58 int
     59 gethostname(
     60 	char	*name,
     61 	size_t		namelen
     62 	)
     63 /*++
     64 
     65 Routine Description:
     66 
     67     Get the hostname for this system.
     68 
     69 Arguments:
     70 
     71 	name		- Pointer to storage for hostname.
     72 	namelen		- Length of name
     73 
     74 Returns:
     75 
     76 	0 on success, -1 if not set
     77 
     78 --*/
     79 {
     80 	char	*pHost;
     81 
     82 	pHost = getenv ("HOSTNAME");
     83 
     84 	if ( pHost == NULL ) {
     85 		*name = 0;
     86 	} else {
     87 		strncpy (name, pHost, namelen);
     88 		name[namelen-1] = 0;
     89 	}
     90 
     91 	return (0);
     92 }
     93