b13921c3f0
Goal is to gain a better handle on who has access to which maps
and to allow (with bpfloader changes to create in one directory
and move into the target directory) per-map selection of
selinux context, while still having reasonable defaults for stuff
pinned directly into the target location.
BPFFS (ie. /sys/fs/bpf) labelling is as follows:
subdirectory selinux context mainline usecase / usable by
/ fs_bpf no (*) core operating system (ie. platform)
/net_private fs_bpf_net_private yes, T+ network_stack
/net_shared fs_bpf_net_shared yes, T+ network_stack & system_server
/netd_readonly fs_bpf_netd_readonly yes, T+ network_stack & system_server & r/o to netd
/netd_shared fs_bpf_netd_shared yes, T+ network_stack & system_server & netd [**]
/tethering fs_bpf_tethering yes, S+ network_stack
/vendor fs_bpf_vendor no, T+ vendor
* initial support for bpf was added back in P,
but things worked differently back then with no bpfloader,
and instead netd doing stuff by hand,
bpfloader with pinning into /sys/fs/bpf was (I believe) added in Q
(and was definitely there in R)
** additionally bpf programs are accesible to netutils_wrapper
for use by iptables xt_bpf extensions
'mainline yes' currently means shipped by the com.android.tethering apex,
but this is really another case of bad naming, as it's really
the 'networking/connectivity/tethering' apex / mainline module.
Long term the plan is to merge a few other networking mainline modules
into it (and maybe give it a saner name...).
The reason for splitting net_private vs tethering is that:
S+ must support 4.9+ kernels and S era bpfloader v0.2+
T+ must support 4.14+ kernels and T beta3 era bpfloader v0.13+
The kernel affects the intelligence of the in-kernel bpf verifier
and the available bpf helper functions. Older kernels have
a tendency to reject programs that newer kernels allow.
/ && /vendor are not shipped via mainline, so only need to work
with the bpfloader that's part of the core os.
Bug: 218408035
Test: TreeHugger, manually on cuttlefish
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I674866ebe32aca4fc851818c1ffcbec12ac4f7d4
(cherry picked from commit 15715aea32)
117 lines
4.7 KiB
Text
117 lines
4.7 KiB
Text
# /proc/config.gz
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type config_gz, fs_type, proc_type;
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# /sys/fs/bpf/<dir> for mainline tethering use
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# TODO: move S+ fs_bpf_tethering here from public/file.te
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type fs_bpf_net_private, fs_type, bpffs_type;
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type fs_bpf_net_shared, fs_type, bpffs_type;
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type fs_bpf_netd_readonly, fs_type, bpffs_type;
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type fs_bpf_netd_shared, fs_type, bpffs_type;
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# /data/misc/storaged
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type storaged_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/wmtrace for wm traces
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type wm_trace_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/a11ytrace for accessibility traces
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type accessibility_trace_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/perfetto-traces for perfetto traces
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type perfetto_traces_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/perfetto-traces/bugreport for perfetto traces for bugreports.
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type perfetto_traces_bugreport_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/perfetto-configs for perfetto configs
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type perfetto_configs_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc_{ce/de}/<user>/sdksandbox root data directory for sdk sandbox processes
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type sdk_sandbox_system_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc_{ce/de}/<user>/sdksandbox/<app-name>/* subdirectory for sdk sandbox processes
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type sdk_sandbox_data_file, file_type, data_file_type, core_data_file_type, app_data_file_type;
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# /sys/kernel/debug/kcov for coverage guided kernel fuzzing in userdebug builds.
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type debugfs_kcov, fs_type, debugfs_type;
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# App executable files in /data/data directories
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type app_exec_data_file, file_type, data_file_type, core_data_file_type;
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typealias app_exec_data_file alias rs_data_file;
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# /data/misc_[ce|de]/rollback : Used by installd to store snapshots
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# of application data.
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type rollback_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc_ce/checkin for checkin apps.
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type checkin_data_file, file_type, data_file_type, core_data_file_type;
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# /data/gsi/ota
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type ota_image_data_file, file_type, data_file_type, core_data_file_type;
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# /data/gsi_persistent_data
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type gsi_persistent_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/emergencynumberdb
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type emergency_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/profcollectd
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type profcollectd_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/apexdata/com.android.art
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type apex_art_data_file, file_type, data_file_type, core_data_file_type, apex_data_file_type;
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# /data/misc/apexdata/com.android.art/staging
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type apex_art_staging_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/apexdata/com.android.compos
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type apex_compos_data_file, file_type, data_file_type, core_data_file_type, apex_data_file_type;
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# legacy labels for various /data/misc[_ce|_de]/*/apexdata directories - retained
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# for backward compatibility b/217581286
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type apex_appsearch_data_file, file_type, data_file_type, core_data_file_type, apex_data_file_type;
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type apex_permission_data_file, file_type, data_file_type, core_data_file_type, apex_data_file_type;
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type apex_scheduling_data_file, file_type, data_file_type, core_data_file_type, apex_data_file_type;
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type apex_tethering_data_file, file_type, data_file_type, core_data_file_type, apex_data_file_type;
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type apex_wifi_data_file, file_type, data_file_type, core_data_file_type, apex_data_file_type;
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# /data/font/files
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type font_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/dmesgd
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type dmesgd_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/odrefresh
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type odrefresh_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/odsign
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type odsign_data_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/odsign_metrics
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type odsign_metrics_file, file_type, data_file_type, core_data_file_type;
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# /data/misc/virtualizationservice
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type virtualizationservice_data_file, file_type, data_file_type, core_data_file_type;
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# /data/system/environ
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type environ_system_data_file, file_type, data_file_type, core_data_file_type;
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# /data/bootanim
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type bootanim_data_file, file_type, data_file_type, core_data_file_type;
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# /dev/kvm
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type kvm_device, dev_type;
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# /apex/com.android.virt/bin/fd_server
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type fd_server_exec, system_file_type, exec_type, file_type;
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# /apex/com.android.compos/bin/compsvc
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type compos_exec, exec_type, file_type, system_file_type;
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# /apex/com.android.compos/bin/compos_key_helper
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type compos_key_helper_exec, exec_type, file_type, system_file_type;
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# /metadata/sepolicy
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type sepolicy_metadata_file, file_type;
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# /dev/selinux/test - used to verify that apex sepolicy is loaded and
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# property labeled.
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type sepolicy_test_file, file_type;
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