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/*

 *  getlogin.c,v 1.6 2002/04/03 14:21:44 joel Exp

 */

#if HAVE_CONFIG_H

#include "config.h"

#endif

#include <limits.h>

#include <string.h>

#include <sys/types.h>

#include <errno.h>

#include <rtems/system.h>

#include <rtems/score/object.h>

#include <rtems/seterr.h>

#include <rtems/userenv.h>

#include <unistd.h>

#include <pwd.h>

/*PAGE

 *

 *  4.2.4 Get User Name, P1003.1b-1993, p. 87

 *

 *  NOTE:  P1003.1c/D10, p. 49 adds getlogin_r().

 */

/*

 * MACRO in userenv.h

 *

static char _POSIX_types_Getlogin_buffer[ LOGIN_NAME_MAX ];

*/

char *getlogin( void )

{

  (void) getlogin_r( _POSIX_types_Getlogin_buffer, LOGIN_NAME_MAX );

  return _POSIX_types_Getlogin_buffer;

}

/*PAGE

 *

 *  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;

  if ( namesize < LOGIN_NAME_MAX )

    return ERANGE;

  pw=getpwuid(getuid());

  if (!pw) {

   strcpy(name,"");

  } else {

   strncpy(name,pw->pw_name,LOGIN_NAME_MAX);

  };

  return 0;

}