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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @brief Get User Name
*
* @ingroup libcsupport
*/
/*
* COPYRIGHT (C) 1989-1999 On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <limits.h>
#include <string.h>
#include <sys/types.h>
#include <errno.h>
#include <rtems/seterr.h>
#include <rtems/userenv.h>
#include <unistd.h>
#include <pwd.h>
/**
* 4.2.4 Get User Name, P1003.1b-1993, p. 87
*
* @note P1003.1c/D10, p. 49 adds getlogin_r().
*/
char *getlogin( void )
{
(void) getlogin_r( _POSIX_types_Getlogin_buffer, LOGIN_NAME_MAX );
return _POSIX_types_Getlogin_buffer;
}
/**
* 4.2.4 Get User Name, P1003.1b-1993, p. 87
*
* @note P1003.1c/D10, p. 49 adds getlogin_r().
*/
int getlogin_r(
char *name,
size_t namesize
)
{
struct passwd *pw;
char *pname;
if ( !name )
return EFAULT;
if ( namesize < LOGIN_NAME_MAX )
return ERANGE;
/* Set the pointer to a default name */
pname = "";
pw = getpwuid(getuid());
if ( pw )
pname = pw->pw_name;
strncpy( name, pname, LOGIN_NAME_MAX );
return 0;
}
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