nto0302@dsacg3.dsac.dla.mil (Bob Fisher) (06/28/91)
How can one process tell if a file is open in another process? I'm writing a daemon that takes files placed into an input directory but the daemon needs to wait until the file is closed by the process that is creating it. This is being developed on an AT&T 3b2 running SVR3.2 but will eventually be ported it to other hardware. -- Bob Fisher US Defense Logistics Agency Systems Automation Center DSAC-TOL, Box 1605, Columbus, OH 43216-5002 614-238-9071 (AV 850-9071) bfisher@dsac.dla.mil osu-cis!dsacg1!bfisher
mouse@thunder.mcrcim.mcgill.edu (der Mouse) (07/01/91)
In article <3300@dsacg3.dsac.dla.mil>, nto0302@dsacg3.dsac.dla.mil (Bob Fisher) writes: > How can one process tell if a file is open in another process? One can't really. > I'm writing a daemon that takes files placed into an input directory > but the daemon needs to wait until the file is closed by the process > that is creating it. The creating process will have to cooperate somehow. There is no portable way to determine this otherwise; about all you can do is grovel through kernel data structures, and even then you can't always get it right (suppose another machine has it mounted via NFS and a process there is writing it). der Mouse old: mcgill-vision!mouse new: mouse@larry.mcrcim.mcgill.edu