40 lines
1.4 KiB
C++
40 lines
1.4 KiB
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/>.
|
|
|
|
getlogin_r.cpp
|
|
Get name of user logged ina t the controlling terminal.
|
|
|
|
*******************************************************************************/
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
|
|
extern "C" int getlogin_r(char* buf, size_t size)
|
|
{
|
|
const char* env_username = getenv("USERNAME");
|
|
const char* username = env_username ? env_username : "root";
|
|
size_t username_len = strlen(username);
|
|
if ( size < (username_len + 1) * sizeof(char) )
|
|
return errno = ERANGE, -1;
|
|
strcpy(buf, username);
|
|
return 0;
|
|
}
|