129 lines
2.4 KiB
C
129 lines
2.4 KiB
C
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/* @(#)gethostname.c 1.21 11/08/04 Copyright 1995-2011 J. Schilling */
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#include <schily/mconfig.h>
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#ifndef lint
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static UConst char sccsid[] =
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"@(#)gethostname.c 1.21 11/08/04 Copyright 1995-2011 J. Schilling";
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#endif
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/*
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* Copyright (c) 1995-2011 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#include <schily/standard.h>
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#include <schily/stdlib.h>
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#include <schily/systeminfo.h>
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#include <schily/hostname.h>
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#ifndef HAVE_GETHOSTNAME
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EXPORT int gethostname __PR((char *name, int namelen));
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#ifdef SI_HOSTNAME
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EXPORT int
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gethostname(name, namelen)
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char *name;
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int namelen;
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{
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if (sysinfo(SI_HOSTNAME, name, namelen) < 0)
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return (-1);
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return (0);
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}
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#else /* ! SI_HOSTNAME */
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#ifdef HAVE_UNAME
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#include <schily/utsname.h>
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#include <schily/string.h>
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EXPORT int
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gethostname(name, namelen)
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char *name;
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int namelen;
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{
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struct utsname uts;
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if (uname(&uts) < 0)
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return (-1);
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strncpy(name, uts.nodename, namelen);
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return (0);
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}
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#else /* !HAVE_UNAME */
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#if defined(__MINGW32__) || defined(_MSC_VER)
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#include <schily/utypes.h>
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#include <schily/errno.h>
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#define gethostname __winsock_gethostname
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#include <schily/windows.h>
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#undef gethostname
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EXPORT int
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gethostname(name, namelen)
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char *name;
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int namelen;
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{
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uint32_t len = namelen;
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char nbuf[MAX_COMPUTERNAME_LENGTH+1];
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if (namelen < 0) {
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#ifdef ENOSYS
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seterrno(ENOSYS);
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#else
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seterrno(EINVAL);
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#endif
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return (-1);
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}
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if (namelen == 0)
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return (0);
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name[0] = '\0';
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if (!GetComputerName(name, &len)) {
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if (len > namelen) {
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nbuf[0] = '\0';
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len = sizeof (nbuf);
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(void) GetComputerName(nbuf, &len);
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strncpy(name, nbuf, namelen);
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return (0);
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}
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seterrno(EIO);
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return (-1);
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}
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return (0);
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}
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#else
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#include <schily/errno.h>
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EXPORT int
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gethostname(name, namelen)
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char *name;
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int namelen;
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{
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if (namelen < 0) {
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#ifdef ENOSYS
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seterrno(ENOSYS);
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#else
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seterrno(EINVAL);
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#endif
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return (-1);
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}
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if (namelen > 0)
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name[0] = '\0';
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return (0);
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}
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#endif
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#endif /* !HAVE_UNAME */
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#endif /* !SI_HOSTNAME */
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#endif /* HAVE_GETHOSTNAME */
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