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Sprite 1984 - 1993
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Sprite 1984 - 1993.iso
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unixSyscall
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sethostname.c
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C/C++ Source or Header
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1992-06-16
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/*
* sethostname.c --
*
* Procedure to simulate Unix sethostname system call
*
* Copyright 1992 Regents of the University of California
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that this copyright
* notice appears in all copies. The University of California
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
#ifndef lint
static char rcsid[] = "$Header: /sprite/src/lib/c/unixSyscall/RCS/sethostname.c,v 1.1 92/06/16 11:21:13 jhh Exp $ SPRITE (Berkeley)";
#endif /* not lint */
#include <sys/param.h>
#include <sys/errno.h>
#include "compatInt.h"
/*
*----------------------------------------------------------------------
*
* sethostname --
*
* Sets the host name.
*
* Results:
* 0 is returned if the call was completed successfully.
* Otherwise, -1 is returned and errno gives more information.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
sethostname(name, namelen)
char *name; /* New name of host. */
int namelen; /* Length of name. */
{
char tmp[MAXHOSTNAMELEN];
ReturnStatus status;
if (namelen > MAXHOSTNAMELEN) {
errno = EINVAL;
return UNIX_ERROR;
}
/*
* We allow names to lacking a terminating null character because the
* Unix man pages are ambiguous as to whether it is needed.
*/
if (name[namelen-1] != '\0') {
if (namelen < MAXHOSTNAMELEN) {
if (name[namelen] != '\0') {
bcopy(name, tmp, namelen);
tmp[namelen] = '\0';
name = tmp;
}
} else {
errno = EINVAL;
return UNIX_ERROR;
}
}
status = Sys_SetHostName(name);
if (status != SUCCESS) {
errno = Compat_MapCode(status);
return UNIX_ERROR;
}
return 0;
}