d5098f99a9
(this is to allow /sys/fs/bpf/tethering -> net_shared/tethering for InProcessTethering, ie. Android Go devices) Bug: 190523685 Bug: 236925089 Test: TreeHugger, manually on aosp_cf_x86_go_phone-userdebug Signed-off-by: Maciej Żenczykowski <maze@google.com> Change-Id: Ifa52429f958b0af80f91af6bfb064c1cdf9cd070
74 lines
3.8 KiB
Text
74 lines
3.8 KiB
Text
type bpfloader_exec, system_file_type, exec_type, file_type;
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typeattribute bpfloader bpfdomain;
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# allow bpfloader to write to the kernel log (starts early)
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allow bpfloader kmsg_device:chr_file w_file_perms;
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# These permissions are required to pin ebpf maps & programs.
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allow bpfloader bpffs_type:dir { add_name create remove_name search write };
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allow bpfloader bpffs_type:file { create getattr read rename setattr };
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allow bpfloader bpffs_type:lnk_file { create getattr read };
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allow { bpffs_type -fs_bpf } fs_bpf:filesystem associate;
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# Allow bpfloader to create bpf maps and programs.
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allow bpfloader self:bpf { map_create map_read map_write prog_load prog_run };
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allow bpfloader self:capability { chown sys_admin net_admin };
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allow bpfloader sysfs_fs_fuse_bpf:file r_file_perms;
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set_prop(bpfloader, bpf_progs_loaded_prop)
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allow bpfloader bpfloader_exec:file execute_no_trans;
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###
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### Neverallow rules
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###
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# TODO: get rid of init & vendor_init; Note: we don't care about getattr/mounton/search
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neverallow { domain -init -vendor_init } bpffs_type:dir { open read setattr };
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neverallow { domain -bpfloader } bpffs_type:dir { add_name create remove_name write };
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neverallow domain bpffs_type:dir ~{ add_name create getattr mounton open read remove_name search setattr write };
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# TODO: get rid of init & vendor_init
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neverallow { domain -bpfloader -init -vendor_init } bpffs_type:file { map open setattr };
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neverallow { domain -bpfloader } bpffs_type:file { create getattr rename };
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neverallow { domain -bpfloader -gpuservice -init -lmkd -mediaprovider_app -netd -netutils_wrapper -system_server -vendor_init } fs_bpf:file read;
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neverallow { domain -bpfloader -init -network_stack -vendor_init } fs_bpf_net_private:file read;
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neverallow { domain -bpfloader -init -network_stack -system_server -vendor_init } fs_bpf_net_shared:file read;
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neverallow { domain -bpfloader -init -netd -network_stack -system_server -vendor_init } fs_bpf_netd_readonly:file read;
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neverallow { domain -bpfloader -init -netd -netutils_wrapper -network_stack -system_server -vendor_init } fs_bpf_netd_shared:file read;
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neverallow { domain -bpfloader -init -network_stack -vendor_init } fs_bpf_tethering:file read;
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neverallow { domain -bpfloader -gpuservice -netd -netutils_wrapper -network_stack -system_server } { bpffs_type -fs_bpf_vendor }:file write;
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neverallow domain bpffs_type:file ~{ create getattr map open read rename setattr write };
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neverallow { domain -bpfloader } bpffs_type:lnk_file ~read;
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neverallow { domain -bpfdomain } bpffs_type:lnk_file read;
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neverallow { domain -bpfloader } *:bpf { map_create prog_load };
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neverallow {
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domain
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-bpfloader
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-gpuservice
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-hal_health_server
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-mediaprovider_app
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-netd
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-netutils_wrapper
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-network_stack
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-system_server
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} *:bpf prog_run;
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neverallow { domain -bpfloader -gpuservice -lmkd -mediaprovider_app -netd -network_stack -system_server } *:bpf { map_read map_write };
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neverallow { domain -bpfloader -init } bpfloader_exec:file { execute execute_no_trans };
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neverallow { coredomain -bpfloader -init } fs_bpf_vendor:file *;
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neverallow bpfloader *:{ tcp_socket udp_socket rawip_socket } *;
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# No domain should be allowed to ptrace bpfloader
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neverallow { domain userdebug_or_eng(`-llkd') } bpfloader:process ptrace;
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# Currently only bpfloader.rc (which runs as init) can do bpf sysctl setup
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# this should perhaps be moved to the bpfloader binary itself. Allow both.
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neverallow { domain -bpfloader -init } proc_bpf:file write;
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