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sortix--sortix/libc/gethostname.cpp
Jonas 'Sortie' Termansen 57003dd777 Add gethostname(2).
2013-12-17 14:30:32 +01:00

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C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
gethostname.cpp
Get the hostname.
*******************************************************************************/
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
extern "C" int gethostname(char* name, size_t len)
{
const char* hostname = getenv("HOSTNAME");
if ( !hostname )
hostname = "sortix";
size_t hostname_len = strlen(hostname);
if ( len < hostname_len+1 )
return errno = ENAMETOOLONG, -1;
strcpy(name, hostname);
return 0;
}