ulckpwdf(3c) hpux man page | unix.com

lckpwdf(3C)															       lckpwdf(3C)

NAME
       lckpwdf(), ulckpwdf() - control access to the /etc/passwd and /etc/shadow files

SYNOPSIS
DESCRIPTION
       The  and  routines  are	used  to coordinate modification access to the password file and to the shadow password file The lock file used by
       these two routines is A process first calls to gain exclusive access rights for modification.  When modifications are complete,	is  called
       to release the lock on This mechanism prevents simultaneous modification of the files.

RETURN VALUE
       The routine returns zero upon successful completion.  If the lock could not be obtained, it returns -1 and sets to indicate the error.

       The routine returns zero upon successful completion.  If the lock has already been released, returns -1 and sets to indicate the error.

FILES
SEE ALSO
       getpwent(3C), passwd(4), thread_safety(5).

																       lckpwdf(3C)