8c11cc3db5
(and while we're at it make sure noone else creates subdirs)
Resolves:
avc: denied { create } for comm="bpfloader" name="tethering" scontext=u:r:bpfloader:s0 tcontext=u:object_r:fs_bpf:s0 tclass=dir
Test: builds and boots with bpfloader changes
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I27a4e0793ed039feab84ac5658e36b68dcca2631
40 lines
1.6 KiB
Text
40 lines
1.6 KiB
Text
# bpf program loader
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type bpfloader, domain;
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type bpfloader_exec, system_file_type, exec_type, file_type;
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typeattribute bpfloader coredomain;
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# These permissions are required to pin ebpf maps & programs.
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allow bpfloader fs_bpf:dir { create search write add_name };
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allow bpfloader fs_bpf:file { create setattr read };
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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 };
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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
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neverallow { domain -init -vendor_init } fs_bpf:dir setattr;
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neverallow { domain -bpfloader } fs_bpf:dir { create write add_name };
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neverallow domain fs_bpf:dir { reparent rename rmdir };
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# TODO: get rid of init & vendor_init
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neverallow { domain -bpfloader -init -vendor_init } fs_bpf:file setattr;
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neverallow { domain -bpfloader } fs_bpf:file create;
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neverallow domain fs_bpf:file { rename unlink };
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neverallow { domain -bpfloader } *:bpf { map_create prog_load };
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neverallow { domain -bpfloader -gpuservice -netd -netutils_wrapper -network_stack -system_server } *:bpf prog_run;
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neverallow { domain -bpfloader -gpuservice -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 bpfloader domain:{ 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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set_prop(bpfloader, bpf_progs_loaded_prop)
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