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GETLOGIN(3)							   GETLOGIN(3)

NAME
       getlogin - get login name

SYNOPSIS
       #include <libc.h>   /* POSIX applications #include <unistd.h> */

       char *getlogin(void);

DESCRIPTION
       Getlogin	 returns  a pointer to a string giving a login name associated
       with the user process.  The login name is found in /etc/utmp.   It  may
       be  used	 in  conjunction  with getpwnam to locate the correct password
       file entry when the same userid is shared by several login names.

       If getlogin is called within a  process	that  is  not  attached	 to  a
       terminal,  or  if  there	 is  no	 entry	in /etc/utmp for the process's
       terminal, getlogin returns a NULL pointer (0).  A reasonable  procedure
       for  determining	 the  login  name  is to first call getlogin and if it
       fails, to call getpwuid(getuid()).

       The return values point to static data whose content is overwritten  by
       each call.

FILES
       /etc/utmp

RETURN VALUE
       A  successful  call returns a pointer to a string containing the user's
       login name, or a NULL pointer if the user's login name cannot be found.

SEE ALSO
       getpwent(3), utmp(5), ttyslot(3)

7th Edition			August 1, 1992			   GETLOGIN(3)

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