Path: utzoo!utgpu!watmath!att!ucbvax!hplabs!hpfcdc!mcb From: mcb@hpfcdc.HP.COM (Michael Berry) Newsgroups: comp.sys.hp Subject: Re: allocate/deallocate command wanted Message-ID: <5570258@hpfcdc.HP.COM> Date: 8 Aug 89 16:58:43 GMT References: <210024@speclab.bgp-usgs.gov> Organization: HP Ft. Collins, Co. Lines: 18 Re: What happens if somone else writes to the tape while I am writing? (Roger N. Clark) > NAME > lad - lock and do command > SYNOPSIS > lad -f pathname ... command_string > This could be done simply with HP-UX Enforcement locking. > Unfortunately, that is not very universal yet. I think that /usr/group > has proposed Manditory (Enforcement) locking, which would solve the > problem. I might add that cooperating applications (users, whatever) could solve this without needing enforcement mode locking. Simple lockf(2) would suffice. Michael Berry ARPA:mcb%hpfcde@hplabs.HP.COM UUCP:hplabs!hpfcla!mcb