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/**
* @file
*
* @brief Get User Name
* @ingroup libcsupport
*/
#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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