Problem using mandatory locks (other apps can read/dele
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reading with a mandatory file lock set:
display - reads & displays image fine, seems to break lock
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Did you tried 'strace'? display probably tries to
mmap()it, and for some strange reason your kernel allows mmap on file marked for mandatory locking. There was some discussion about disabling mmap for them, but I have no idea what current state is, and what other platforms do.
Petr Vandrovec [email protected]
strace indeed shows a mmap2 being done.
So if mmap's arent blocked by locks, is there any other way to stop them?
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