60 lines
2.8 KiB
C
60 lines
2.8 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ This program is free software; you can redistribute it and/or modify │
|
|
│ it under the terms of the GNU General Public License as published by │
|
|
│ the Free Software Foundation; version 2 of the License. │
|
|
│ │
|
|
│ This program is distributed in the hope that it will be useful, but │
|
|
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
|
|
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
|
|
│ General Public License for more details. │
|
|
│ │
|
|
│ You should have received a copy of the GNU General Public License │
|
|
│ along with this program; if not, write to the Free Software │
|
|
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
|
|
│ 02110-1301 USA │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/internal.h"
|
|
#include "libc/calls/struct/utsname.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/macros.h"
|
|
#include "libc/nt/enum/computernameformat.h"
|
|
#include "libc/nt/errors.h"
|
|
#include "libc/nt/runtime.h"
|
|
#include "libc/nt/systeminfo.h"
|
|
#include "libc/str/str.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
/**
|
|
* Returns name of host system, e.g.
|
|
*
|
|
* pheidippides.domain.example
|
|
* ^^^^^^^^^^^^
|
|
*/
|
|
int gethostname(char *name, size_t len) {
|
|
uint32_t nSize;
|
|
char16_t name16[256];
|
|
struct utsname u;
|
|
if (len < 1) return einval();
|
|
if (!name) return efault();
|
|
if (!IsWindows()) {
|
|
if (uname(&u) == -1) return -1;
|
|
if (!memccpy(name, u.nodename, '\0', len)) {
|
|
name[len - 1] = '\0';
|
|
}
|
|
return 0;
|
|
} else {
|
|
nSize = ARRAYLEN(name16);
|
|
if (GetComputerNameEx(kNtComputerNameDnsHostname, name16, &nSize)) {
|
|
tprecode16to8(name, len, name16);
|
|
return 0;
|
|
} else {
|
|
return __winerr();
|
|
}
|
|
}
|
|
}
|