John> In the fnctl docs for both python 2.3 and 2.4 there is a note at
John> the bottom that says
John> The os.open() function supports locking flags and is available on
John> a wider variety of platforms than the lockf() and flock()
John> functions, providing a more platform-independent file locking
John> facility.
John> however, in neither of those versions does os.open support any
John> kind of mysterious "locking flags", nor is there any reference in
John> os to any kind of locking magic (nor do any C open()s I know of
John> support any kind of locking semantics). The note seems bogus; am I
John> missing something, or should it be elided?
I could have sworn that os.open supported the O_SHLOCK and O_EXLOCK flags.
I'm pretty sure I've used them in the past, but don't see them now. (They
aren't in 2.2 either.)
If you try this:
O_SHLOCK = 0x0010
O_EXLOCK = 0x0020
(those are the definitions on my Mac - YMMV) does
os.open("somefile", O_SHLOCK|<other flags>)
work?
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