Messages in this thread | | | Date | Sat, 22 Feb 2003 02:27:00 +0530 | From | Sudharsan Vijayaraghavan <> | Subject | Accessibility of variables between kernel modules |
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Hi,
Am using 2.4 kernel . In this release i find that all non-static symbols ( functions/variables) defined in one kernel module are exported by default to other kernel modules . If we would use EXPORT_NO_SYMBOLS this exporting of symbols is prevented . However we can export one of the symbols in one module using EXPORT_SYMBOL and then prevent the export of others by immediately calling EXPORT_NO_SYMBOLS.
We can even use EXPORT_SYMBOL_GPL to export a symbol from a given module , these could be accessed by only those modules using MODULE_LICENSE() and are GPL compatible.
However my requirement is quite different. It is as follows.
I have two kernel modules A and B. Is it possible that the variables in kernel module A should only be visible to kernel module B and no other kernel modules in the system. If so please help me out with some explanation. Really appreciate your help regarding the same.
Thanks in advance, Sudharsan.
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