Changes to the LSM file-related hooks for 2.5.58
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Quoted 5 lines · Stephen D. Smalley
3) Add a
security_file_alloccall toinit_private_fileand create arelease_private_filefunction to encapsulate release of private file structures. These changes ensure that security structures for private files will be allocated and freed appropriately.
Adding release_private_file requires fixing all code that uses init_private_file (including possible third party code). Otherwise you have some subtle leak. It would better to rename init_private_file to some other name and add appropiate comments so that this can be catched easily at compile time.
-Andi