Use snprintf instead of sprintf to avoid buffer overflows
Use snprintf in uu_lockerr instead of lots of hardcoded constants
and not null-terminated strncpy
Return "" for OK and "device in use" for INUSE, it allows simple
strcpy(buf, uu_lockerr(retcode)) without testing for special OK
case (NULL was there) and obtaining meaningful result for INUSE
("" was there) without special testing for it too.
in uu_lock(). Add uu_lockerr() for turning the results of
uu_lock into something printable. Remove bogus section in man page
about race conditions allowing both processes to get the lock.
Include libutil.h and use uu_lock() correctly where it should.
Suggested by: ache@freebsd.org
