dl_c18n_control prototype #2452
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This function allows compartments to be disabled by name at runtime. It can walk all loaded DSOs for all compartments of a given name or be resticted to a single DSO. For extensibility purposes there is a command argument and a currently unused flags argument. The command can either be DISABLE to disable a compartment or DUMP to dump a list of compartments to stdout.
Add a -d <name> and -p <path> option to disable a single compartment as a quick hack to exercise dl_c18n_control's DISABLE command and -D to exercise the DUMP command. This is all a bit of hack and should probably replaced by extending the list of libraries into a little DSO to perform various operatings.
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Add a prototype dl_c18n_control() that allows compartments to be disabled at runtime. The current implementation is a sledgehammer that sets all the pages to PROT_NONE and MAP_GUARD. It currently only supports disabling compartments.