getlogin(3)
NAME
getlogin − get login name
SYNTAX
char *getlogin();
DESCRIPTION
The getlogin subroutine returns a pointer to the login name as 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 typewriter, it returns NULL. The correct procedure for determining the login name is to first call cuserid, or to call getlogin and if it fails, to call getpwuid.
RESTRICTIONS
The return values point to static data whose content is overwritten by each call.
DIAGNOSTICS
Returns NULL (0) if name not found.
FILES
/etc/utmp