DESCRIPTION
The ftok function attempts to create a unique key suitable for use with the msgget(3), semget(2) and shmget(2) functions given the path of an existing file and a user-selectable id. The specified path must specify an existing file that is accessible to the calling process or the call will fail. Also, note that links to files will return the same key, given the same id.
RETURN VALUES
The ftok function will return -1 if path does not exist or if it cannot be accessed by the calling process.
SEE ALSO
semget(2), shmget(2), msgget(3)
HISTORY
AUTHORS
BUGS
