Hello,
today I am totally confused how the flock(2) call should work on
AFS files.
Normally locking works in the following way:
1 fd = open("afs-file",O_RDWR)
do something
2 flock(fd,LOCK_EX)
do something with "afs-file"
3 flock(fd,LOCK_UN)
do something
4 close(fd)
When there are two processes (on different machines) executing that
code, the (2) flock call has to update the local copy of the afs-file,
otherwise locking is useless. And the (3) flock call has to sync the
local copy with the fileserver.
Writing a small test program I see that this synchronization isn't done.
How can I use the flock(2) call on AFS files?
Thank you for any help,
HW
--
Hans-Werner Paulsen [EMAIL PROTECTED]
MPI für Astrophysik Tel 089-30000-2602
Karl-Schwarzschild-Str. 1 Fax 089-30000-2235
D-85741 Garching
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