9b2e0cbeea
In kernel 4.7, the capability and capability2 classes were split apart
from cap_userns and cap2_userns (see kernel commit
8e4ff6f228e4722cac74db716e308d1da33d744f). Since then, Android cannot be
run in a container with SELinux in enforcing mode.
This change applies the existing capability rules to user namespaces as
well as the root namespace so that Android running in a container
behaves the same on pre- and post-4.7 kernels.
This is essentially:
1. New global_capability_class_set and global_capability2_class_set
that match capability+cap_userns and capability2+cap2_userns,
respectively.
2. s/self:capability/self:global_capability_class_set/g
3. s/self:capability2/self:global_capability2_class_set/g
4. Add cap_userns and cap2_userns to the existing capability_class_set
so that it covers all capabilities. This set was used by several
neverallow and dontaudit rules, and I confirmed that the new
classes are still appropriate.
Test: diff new policy against old and confirm that all new rules add
only cap_userns or cap2_userns;
Boot ARC++ on a device with the 4.12 kernel.
Bug: crbug.com/754831
Change-Id: I4007eb3a2ecd01b062c4c78d9afee71c530df95f
61 lines
1.7 KiB
Text
61 lines
1.7 KiB
Text
# storaged daemon
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type storaged, domain, coredomain, mlstrustedsubject;
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type storaged_exec, exec_type, file_type;
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init_daemon_domain(storaged)
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# Read access to pseudo filesystems
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r_dir_file(storaged, sysfs_type)
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r_dir_file(storaged, proc_net)
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r_dir_file(storaged, domain)
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# Read /proc/uid_io/stats
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allow storaged proc_uid_io_stats:file r_file_perms;
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# Read /data/system/packages.list
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allow storaged system_data_file:file r_file_perms;
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# Store storaged proto file
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allow storaged storaged_data_file:dir rw_dir_perms;
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allow storaged storaged_data_file:file create_file_perms;
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userdebug_or_eng(`
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# Read access to debugfs
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allow storaged debugfs_mmc:dir search;
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allow storaged debugfs_mmc:file r_file_perms;
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')
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# Needed to provide debug dump output via dumpsys pipes.
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allow storaged shell:fd use;
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allow storaged shell:fifo_file write;
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# Needed for GMScore to call dumpsys storaged
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allow storaged priv_app:fd use;
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allow storaged app_data_file:file write;
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allow storaged permission_service:service_manager find;
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# Binder permissions
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add_service(storaged, storaged_service)
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binder_use(storaged)
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binder_call(storaged, system_server)
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# use batteryproperties service
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allow storaged batteryproperties_service:service_manager find;
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binder_call(storaged, healthd)
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# Implements a dumpsys interface.
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allow storaged dumpstate:fd use;
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# use a subset of the package manager service
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allow storaged package_native_service:service_manager find;
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# Kernel does extra check on CAP_DAC_OVERRIDE for libbinder when storaged is
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# running as root. See b/35323867 #3.
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dontaudit storaged self:global_capability_class_set dac_override;
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###
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### neverallow
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###
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neverallow storaged domain:process ptrace;
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neverallow storaged self:capability_class_set *;
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