VALID_LINK(4)

NAME
valid_link - controls the use of link(3)

SYNOPSIS
int valid_link(string from, string to);

DESCRIPTION
The driver calls valid_link(from, to) in the master object from inside the link(from, to) efunction. If valid_link() returns 0, then the link() will fail. If valid_link() returns 1, then the link(3) will succeed if rename() would succeed if called with the same arguments.