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19 lines
1.0 KiB
19 lines
1.0 KiB
4 months ago
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# The tzdatacheck command run by init.
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type tzdatacheck, domain;
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type tzdatacheck_exec, system_file_type, exec_type, file_type;
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allow tzdatacheck zoneinfo_data_file:dir create_dir_perms;
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allow tzdatacheck zoneinfo_data_file:file unlink;
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# Below are strong assertion that only init, system_server and tzdatacheck
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# can modify the /data time zone rules directories. This is to make it very
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# clear that only these domains should modify the actual time zone rules data.
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# The tzdatacheck binary itself may be executed by shell for tests but it must
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# not be able to modify the real rules.
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# If other users / binaries could modify time zone rules on device this might
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# have negative implications for users (who may get incorrect local times)
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# or break assumptions made / invalidate data held by the components actually
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# responsible for updating time zone rules.
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neverallow { domain -system_server -init -tzdatacheck } zoneinfo_data_file:file no_w_file_perms;
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neverallow { domain -system_server -init -tzdatacheck } zoneinfo_data_file:dir no_w_dir_perms;
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