1038 lines
36 KiB
Plaintext
1038 lines
36 KiB
Plaintext
#####################################
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# domain_trans(olddomain, type, newdomain)
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# Allow a transition from olddomain to newdomain
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# upon executing a file labeled with type.
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# This only allows the transition; it does not
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# cause it to occur automatically - use domain_auto_trans
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# if that is what you want.
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#
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define(`domain_trans', `
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# Old domain may exec the file and transition to the new domain.
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allow $1 $2:file { getattr open read execute map };
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allow $1 $3:process transition;
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# New domain is entered by executing the file.
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allow $3 $2:file { entrypoint open read execute getattr map };
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# New domain can send SIGCHLD to its caller.
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ifelse($1, `init', `', `allow $3 $1:process sigchld;')
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# Enable AT_SECURE, i.e. libc secure mode.
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dontaudit $1 $3:process noatsecure;
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# XXX dontaudit candidate but requires further study.
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allow $1 $3:process { siginh rlimitinh };
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')
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#####################################
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# domain_auto_trans(olddomain, type, newdomain)
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# Automatically transition from olddomain to newdomain
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# upon executing a file labeled with type.
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#
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define(`domain_auto_trans', `
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# Allow the necessary permissions.
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domain_trans($1,$2,$3)
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# Make the transition occur by default.
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type_transition $1 $2:process $3;
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')
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#####################################
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# file_type_trans(domain, dir_type, file_type)
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# Allow domain to create a file labeled file_type in a
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# directory labeled dir_type.
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# This only allows the transition; it does not
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# cause it to occur automatically - use file_type_auto_trans
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# if that is what you want.
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#
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define(`file_type_trans', `
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# Allow the domain to add entries to the directory.
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allow $1 $2:dir ra_dir_perms;
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# Allow the domain to create the file.
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allow $1 $3:notdevfile_class_set create_file_perms;
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allow $1 $3:dir create_dir_perms;
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')
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#####################################
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# file_type_auto_trans(domain, dir_type, file_type)
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# Automatically label new files with file_type when
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# they are created by domain in directories labeled dir_type.
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#
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define(`file_type_auto_trans', `
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# Allow the necessary permissions.
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file_type_trans($1, $2, $3)
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# Make the transition occur by default.
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type_transition $1 $2:dir $3;
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type_transition $1 $2:notdevfile_class_set $3;
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')
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#####################################
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# r_dir_file(domain, type)
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# Allow the specified domain to read directories, files
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# and symbolic links of the specified type.
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define(`r_dir_file', `
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allow $1 $2:dir r_dir_perms;
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allow $1 $2:{ file lnk_file } r_file_perms;
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')
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#####################################
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# tmpfs_domain(domain)
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# Allow access to a unique type for this domain when creating tmpfs / ashmem files.
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define(`tmpfs_domain', `
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type_transition $1 tmpfs:file $1_tmpfs;
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allow $1 $1_tmpfs:file { read write getattr map };
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')
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# pdx macros for IPC. pdx is a high-level name which contains transport-specific
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# rules from underlying transport (e.g. UDS-based implementation).
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#####################################
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# pdx_service_attributes(service)
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# Defines type attribute used to identify various service-related types.
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define(`pdx_service_attributes', `
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attribute pdx_$1_endpoint_dir_type;
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attribute pdx_$1_endpoint_socket_type;
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attribute pdx_$1_channel_socket_type;
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attribute pdx_$1_server_type;
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')
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#####################################
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# pdx_service_socket_types(service, endpoint_dir_t)
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# Define types for endpoint and channel sockets.
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define(`pdx_service_socket_types', `
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typeattribute $2 pdx_$1_endpoint_dir_type;
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type pdx_$1_endpoint_socket, pdx_$1_endpoint_socket_type, pdx_endpoint_socket_type, file_type, coredomain_socket, mlstrustedobject, mlstrustedsubject;
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type pdx_$1_channel_socket, pdx_$1_channel_socket_type, pdx_channel_socket_type, coredomain_socket;
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userdebug_or_eng(`
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dontaudit su pdx_$1_endpoint_socket:unix_stream_socket *;
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dontaudit su pdx_$1_channel_socket:unix_stream_socket *;
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')
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')
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#####################################
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# pdx_server(server_domain, service)
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define(`pdx_server', `
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# Mark the server domain as a PDX server.
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typeattribute $1 pdx_$2_server_type;
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# Allow the init process to create the initial endpoint socket.
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allow init pdx_$2_endpoint_socket_type:unix_stream_socket { create bind };
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# Allow the server domain to use the endpoint socket and accept connections on it.
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# Not using macro like "rw_socket_perms_no_ioctl" because it provides more rights
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# than we need (e.g. we don"t need "bind" or "connect").
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allow $1 pdx_$2_endpoint_socket_type:unix_stream_socket { read getattr write setattr lock append getopt setopt shutdown listen accept };
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# Allow the server domain to apply security context label to the channel socket pair (allow process to use setsockcreatecon_raw()).
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allow $1 self:process setsockcreate;
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# Allow the server domain to create a client channel socket.
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allow $1 pdx_$2_channel_socket_type:unix_stream_socket create_stream_socket_perms;
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# Prevent other processes from claiming to be a server for the same service.
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neverallow {domain -$1} pdx_$2_endpoint_socket_type:unix_stream_socket { listen accept };
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')
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#####################################
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# pdx_connect(client, service)
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define(`pdx_connect', `
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# Allow client to open the service endpoint file.
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allow $1 pdx_$2_endpoint_dir_type:dir r_dir_perms;
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allow $1 pdx_$2_endpoint_socket_type:sock_file rw_file_perms;
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# Allow the client to connect to endpoint socket.
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allow $1 pdx_$2_endpoint_socket_type:unix_stream_socket { connectto read write shutdown };
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')
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#####################################
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# pdx_use(client, service)
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define(`pdx_use', `
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# Allow the client to use the PDX channel socket.
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# Not using macro like "rw_socket_perms_no_ioctl" because it provides more rights
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# than we need (e.g. we don"t need "bind" or "connect").
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allow $1 pdx_$2_channel_socket_type:unix_stream_socket { read getattr write setattr lock append getopt setopt shutdown };
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# Client needs to use an channel event fd from the server.
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allow $1 pdx_$2_server_type:fd use;
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# Servers may receive sync fences, gralloc buffers, etc, from clients.
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# This could be tightened on a per-server basis, but keeping track of service
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# clients is error prone.
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allow pdx_$2_server_type $1:fd use;
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')
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#####################################
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# pdx_client(client, service)
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define(`pdx_client', `
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pdx_connect($1, $2)
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pdx_use($1, $2)
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')
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#####################################
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# init_daemon_domain(domain)
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# Set up a transition from init to the daemon domain
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# upon executing its binary.
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define(`init_daemon_domain', `
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domain_auto_trans(init, $1_exec, $1)
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')
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####################################
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# userfaultfd_use(domain)
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# Allow domain to create/use userfaultfd.
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define(`userfaultfd_use', `
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# Set up a type_transition to "userfaultfd" named anonymous inode object.
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type $1_userfaultfd;
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type_transition $1 $1:anon_inode $1_userfaultfd "[userfaultfd]";
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# Allow domain to create/use userfaultfd anon_inode.
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allow $1 $1_userfaultfd:anon_inode { create ioctl read };
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# Suppress errors generate during bugreport
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dontaudit su $1_userfaultfd:anon_inode *;
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# Other domains may not use userfaultfd anon_inodes created by this domain.
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neverallow { domain -$1 } $1_userfaultfd:anon_inode *;
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# This domain may not use userfaultfd anon_inodes created by other domains.
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neverallow $1 ~$1_userfaultfd:anon_inode *;
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')
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####################################
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# virtualizationservice_use(domain)
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# Allow domain to create and communicate with a virtual machine using
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# virtualizationservice.
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define(`virtualizationservice_use', `
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allow $1 virtualization_service:service_manager find;
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# Let the client call virtualizationservice.
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binder_call($1, virtualizationservice)
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# Let virtualizationservice call back to the client.
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binder_call(virtualizationservice, $1)
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# Let the client pass file descriptors to virtualizationservice and on
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# to crosvm
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allow { virtualizationservice crosvm } $1:fd use;
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# Allow piping console log to the client
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allow { virtualizationservice crosvm } $1:fifo_file write;
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# Allow client to read/write vsock created by virtualizationservice to
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# communicate with the VM that it created. Notice that we do not grant
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# permission to create a vsock; the client can only connect to VMs
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# that it owns.
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allow $1 virtualizationservice:vsock_socket { getattr read write };
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# Allow client to inspect hypervisor capabilities
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get_prop($1, hypervisor_prop)
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')
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#####################################
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# app_domain(domain)
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# Allow a base set of permissions required for all apps.
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define(`app_domain', `
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typeattribute $1 appdomain;
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# Label tmpfs objects for all apps.
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type_transition $1 tmpfs:file appdomain_tmpfs;
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userfaultfd_use($1)
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allow $1 appdomain_tmpfs:file { execute getattr map read write };
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neverallow { $1 -runas_app -shell -simpleperf } { domain -$1 }:file no_rw_file_perms;
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neverallow { appdomain -runas_app -shell -simpleperf -$1 } $1:file no_rw_file_perms;
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# The Android security model guarantees the confidentiality and integrity
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# of application data and execution state. Ptrace bypasses those
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# confidentiality guarantees. Disallow ptrace access from system components to
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# apps. crash_dump is excluded, as it needs ptrace access to produce stack
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# traces. runas_app is excluded, as it operates only on debuggable apps.
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# simpleperf is excluded, as it operates only on debuggable or profileable
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# apps. llkd is excluded, as it needs ptrace access to inspect stack traces for
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# live lock conditions.
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neverallow { domain -$1 -crash_dump userdebug_or_eng(`-llkd') -runas_app -simpleperf } $1:process ptrace;
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')
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#####################################
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# untrusted_app_domain(domain)
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# Allow a base set of permissions required for all untrusted apps.
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define(`untrusted_app_domain', `
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typeattribute $1 untrusted_app_all;
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')
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#####################################
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# net_domain(domain)
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# Allow a base set of permissions required for network access.
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define(`net_domain', `
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typeattribute $1 netdomain;
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')
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#####################################
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# bluetooth_domain(domain)
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# Allow a base set of permissions required for bluetooth access.
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define(`bluetooth_domain', `
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typeattribute $1 bluetoothdomain;
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')
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#####################################
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# hal_attribute(hal_name)
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# Add an attribute for hal implementations along with necessary
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# restrictions.
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define(`hal_attribute', `
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attribute hal_$1;
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expandattribute hal_$1 true;
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attribute hal_$1_client;
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expandattribute hal_$1_client true;
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attribute hal_$1_server;
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expandattribute hal_$1_server false;
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neverallow { hal_$1_server -halserverdomain } domain:process fork;
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# hal_*_client and halclientdomain attributes are always expanded for
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# performance reasons. Neverallow rules targeting expanded attributes can not be
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# verified by CTS since these attributes are already expanded by that time.
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build_test_only(`
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neverallow { hal_$1_server -hal_$1 } domain:process fork;
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neverallow { hal_$1_client -halclientdomain } domain:process fork;
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')
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')
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#####################################
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# hal_server_domain(domain, hal_type)
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# Allow a base set of permissions required for a domain to offer a
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# HAL implementation of the specified type over HwBinder.
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#
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# For example, default implementation of Foo HAL:
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# type hal_foo_default, domain;
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# hal_server_domain(hal_foo_default, hal_foo)
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#
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define(`hal_server_domain', `
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typeattribute $1 halserverdomain;
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typeattribute $1 $2_server;
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typeattribute $1 $2;
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')
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#####################################
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# hal_client_domain(domain, hal_type)
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# Allow a base set of permissions required for a domain to be a
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# client of a HAL of the specified type.
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#
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# For example, make some_domain a client of Foo HAL:
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# hal_client_domain(some_domain, hal_foo)
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#
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define(`hal_client_domain', `
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typeattribute $1 halclientdomain;
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typeattribute $1 $2_client;
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# TODO(b/34170079): Make the inclusion of the rules below conditional also on
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# non-Treble devices. For now, on non-Treble device, always grant clients of a
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# HAL sufficient access to run the HAL in passthrough mode (i.e., in-process).
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not_full_treble(`
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typeattribute $1 $2;
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# Find passthrough HAL implementations
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allow $2 system_file:dir r_dir_perms;
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allow $2 vendor_file:dir r_dir_perms;
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allow $2 vendor_file:file { read open getattr execute map };
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')
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')
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#####################################
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# passthrough_hal_client_domain(domain, hal_type)
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# Allow a base set of permissions required for a domain to be a
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# client of a passthrough HAL of the specified type.
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#
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# For example, make some_domain a client of passthrough Foo HAL:
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# passthrough_hal_client_domain(some_domain, hal_foo)
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#
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define(`passthrough_hal_client_domain', `
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typeattribute $1 halclientdomain;
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typeattribute $1 $2_client;
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typeattribute $1 $2;
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# Find passthrough HAL implementations
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allow $2 system_file:dir r_dir_perms;
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allow $2 vendor_file:dir r_dir_perms;
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allow $2 vendor_file:file { read open getattr execute map };
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')
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#####################################
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# unix_socket_connect(clientdomain, socket, serverdomain)
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# Allow a local socket connection from clientdomain via
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# socket to serverdomain.
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#
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# Note: If you see denial records that distill to the
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# following allow rules:
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# allow clientdomain property_socket:sock_file write;
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# allow clientdomain init:unix_stream_socket connectto;
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# allow clientdomain something_prop:property_service set;
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#
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# This sequence is indicative of attempting to set a property.
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# use set_prop(sourcedomain, targetproperty)
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#
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define(`unix_socket_connect', `
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allow $1 $2_socket:sock_file write;
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allow $1 $3:unix_stream_socket connectto;
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')
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#####################################
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# set_prop(sourcedomain, targetproperty)
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# Allows source domain to set the
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# targetproperty.
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#
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define(`set_prop', `
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unix_socket_connect($1, property, init)
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allow $1 $2:property_service set;
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get_prop($1, $2)
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')
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#####################################
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# get_prop(sourcedomain, targetproperty)
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# Allows source domain to read the
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# targetproperty.
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#
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define(`get_prop', `
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allow $1 $2:file { getattr open read map };
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')
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#####################################
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# unix_socket_send(clientdomain, socket, serverdomain)
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# Allow a local socket send from clientdomain via
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# socket to serverdomain.
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define(`unix_socket_send', `
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allow $1 $2_socket:sock_file write;
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allow $1 $3:unix_dgram_socket sendto;
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')
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#####################################
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# binder_use(domain)
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# Allow domain to use Binder IPC.
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define(`binder_use', `
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# Call the servicemanager and transfer references to it.
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allow $1 servicemanager:binder { call transfer };
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# Allow servicemanager to send out callbacks
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allow servicemanager $1:binder { call transfer };
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# servicemanager performs getpidcon on clients.
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allow servicemanager $1:dir search;
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allow servicemanager $1:file { read open };
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allow servicemanager $1:process getattr;
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# rw access to /dev/binder and /dev/ashmem is presently granted to
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# all domains in domain.te.
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')
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#####################################
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# hwbinder_use(domain)
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# Allow domain to use HwBinder IPC.
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define(`hwbinder_use', `
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# Call the hwservicemanager and transfer references to it.
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allow $1 hwservicemanager:binder { call transfer };
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# Allow hwservicemanager to send out callbacks
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allow hwservicemanager $1:binder { call transfer };
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# hwservicemanager performs getpidcon on clients.
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allow hwservicemanager $1:dir search;
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allow hwservicemanager $1:file { read open map };
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allow hwservicemanager $1:process getattr;
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# rw access to /dev/hwbinder and /dev/ashmem is presently granted to
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# all domains in domain.te.
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')
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#####################################
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# vndbinder_use(domain)
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# Allow domain to use Binder IPC.
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define(`vndbinder_use', `
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# Talk to the vndbinder device node
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allow $1 vndbinder_device:chr_file rw_file_perms;
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# Call the vndservicemanager and transfer references to it.
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allow $1 vndservicemanager:binder { call transfer };
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# vndservicemanager performs getpidcon on clients.
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allow vndservicemanager $1:dir search;
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allow vndservicemanager $1:file { read open map };
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allow vndservicemanager $1:process getattr;
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')
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#####################################
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# binder_call(clientdomain, serverdomain)
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# Allow clientdomain to perform binder IPC to serverdomain.
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define(`binder_call', `
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# Call the server domain and optionally transfer references to it.
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allow $1 $2:binder { call transfer };
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# Allow the serverdomain to transfer references to the client on the reply.
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allow $2 $1:binder transfer;
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# Receive and use open files from the server.
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allow $1 $2:fd use;
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')
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#####################################
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# binder_service(domain)
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# Mark a domain as being a Binder service domain.
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# Used to allow binder IPC to the various system services.
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define(`binder_service', `
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typeattribute $1 binderservicedomain;
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')
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#####################################
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# wakelock_use(domain)
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# Allow domain to manage wake locks
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define(`wakelock_use', `
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# TODO(b/115946999): Remove /sys/power/* permissions once CONFIG_PM_WAKELOCKS is
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# deprecated.
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# Access /sys/power/wake_lock and /sys/power/wake_unlock
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allow $1 sysfs_wake_lock:file rw_file_perms;
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# Accessing these files requires CAP_BLOCK_SUSPEND
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allow $1 self:global_capability2_class_set block_suspend;
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# system_suspend permissions
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binder_call($1, system_suspend_server)
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allow $1 system_suspend_hwservice:hwservice_manager find;
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# halclientdomain permissions
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hwbinder_use($1)
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get_prop($1, hwservicemanager_prop)
|
|
allow $1 hidl_manager_hwservice:hwservice_manager find;
|
|
# AIDL suspend hal permissions
|
|
allow $1 hal_system_suspend_service:service_manager find;
|
|
binder_use($1)
|
|
')
|
|
|
|
#####################################
|
|
# selinux_check_access(domain)
|
|
# Allow domain to check SELinux permissions via selinuxfs.
|
|
define(`selinux_check_access', `
|
|
r_dir_file($1, selinuxfs)
|
|
allow $1 selinuxfs:file w_file_perms;
|
|
allow $1 kernel:security compute_av;
|
|
allow $1 self:netlink_selinux_socket { read write create getattr setattr lock relabelfrom relabelto append bind connect listen accept getopt setopt shutdown recvfrom sendto name_bind };
|
|
')
|
|
|
|
#####################################
|
|
# selinux_check_context(domain)
|
|
# Allow domain to check SELinux contexts via selinuxfs.
|
|
define(`selinux_check_context', `
|
|
r_dir_file($1, selinuxfs)
|
|
allow $1 selinuxfs:file w_file_perms;
|
|
allow $1 kernel:security check_context;
|
|
')
|
|
|
|
#####################################
|
|
# create_pty(domain)
|
|
# Allow domain to create and use a pty, isolated from any other domain ptys.
|
|
define(`create_pty', `
|
|
# Each domain gets a unique devpts type.
|
|
type $1_devpts, fs_type;
|
|
# Label the pty with the unique type when created.
|
|
type_transition $1 devpts:chr_file $1_devpts;
|
|
# Allow use of the pty after creation.
|
|
allow $1 $1_devpts:chr_file { open getattr read write ioctl };
|
|
allowxperm $1 $1_devpts:chr_file ioctl unpriv_tty_ioctls;
|
|
# TIOCSTI is only ever used for exploits. Block it.
|
|
# b/33073072, b/7530569
|
|
# http://www.openwall.com/lists/oss-security/2016/09/26/14
|
|
neverallowxperm * $1_devpts:chr_file ioctl TIOCSTI;
|
|
# Note: devpts:dir search and ptmx_device:chr_file rw_file_perms
|
|
# allowed to everyone via domain.te.
|
|
')
|
|
|
|
#####################################
|
|
# Non system_app application set
|
|
#
|
|
define(`non_system_app_set', `{ appdomain -system_app }')
|
|
|
|
#####################################
|
|
# Recovery only
|
|
# SELinux rules which apply only to recovery mode
|
|
#
|
|
define(`recovery_only', ifelse(target_recovery, `true', $1, ))
|
|
|
|
#####################################
|
|
# Not recovery
|
|
# SELinux rules which apply only to non-recovery (normal) mode
|
|
#
|
|
define(`not_recovery', ifelse(target_recovery, `true', , $1))
|
|
|
|
#####################################
|
|
# Full TREBLE only
|
|
# SELinux rules which apply only to full TREBLE devices
|
|
#
|
|
define(`full_treble_only', ifelse(target_full_treble, `true', $1,
|
|
ifelse(target_full_treble, `cts',
|
|
# BEGIN_TREBLE_ONLY -- this marker is used by CTS -- do not modify
|
|
$1
|
|
# END_TREBLE_ONLY -- this marker is used by CTS -- do not modify
|
|
, )))
|
|
|
|
#####################################
|
|
# Not full TREBLE
|
|
# SELinux rules which apply only to devices which are not full TREBLE devices
|
|
#
|
|
define(`not_full_treble', ifelse(target_full_treble, `true', , $1))
|
|
|
|
#####################################
|
|
# enforce_debugfs_restriction
|
|
# SELinux rules which apply to devices that enable debugfs restrictions.
|
|
# The keyword "cts" is used to insert markers to only CTS test the neverallows
|
|
# added by the macro for S-launch devices and newer.
|
|
define(`enforce_debugfs_restriction', ifelse(target_enforce_debugfs_restriction, `true', $1,
|
|
ifelse(target_enforce_debugfs_restriction, `cts',
|
|
# BEGIN_LAUNCHING_WITH_S_ONLY -- this marker is used by CTS -- do not modify
|
|
$1
|
|
# END_LAUNCHING_WITH_S_ONLY -- this marker is used by CTS -- do not modify
|
|
, )))
|
|
|
|
#####################################
|
|
# no_debugfs_restriction
|
|
# SELinux rules which apply to devices that do not have debugfs restrictions in non-user builds.
|
|
define(`no_debugfs_restriction', ifelse(target_enforce_debugfs_restriction, `true', , $1))
|
|
|
|
#####################################
|
|
# Compatible property only
|
|
# SELinux rules which apply only to devices with compatible property
|
|
#
|
|
define(`compatible_property_only', ifelse(target_compatible_property, `true', $1,
|
|
ifelse(target_compatible_property, `cts',
|
|
# BEGIN_COMPATIBLE_PROPERTY_ONLY -- this marker is used by CTS -- do not modify
|
|
$1
|
|
# END_COMPATIBLE_PROPERTY_ONLY -- this marker is used by CTS -- do not modify
|
|
, )))
|
|
|
|
#####################################
|
|
# Not compatible property
|
|
# SELinux rules which apply only to devices without compatible property
|
|
#
|
|
define(`not_compatible_property', ifelse(target_compatible_property, `true', , $1))
|
|
|
|
#####################################
|
|
# Userdebug or eng builds
|
|
# SELinux rules which apply only to userdebug or eng builds
|
|
#
|
|
define(`userdebug_or_eng', ifelse(target_build_variant, `eng', $1, ifelse(target_build_variant, `userdebug', $1)))
|
|
|
|
#####################################
|
|
# asan builds
|
|
# SELinux rules which apply only to asan builds
|
|
#
|
|
define(`with_asan', ifelse(target_with_asan, `true', userdebug_or_eng(`$1'), ))
|
|
|
|
#####################################
|
|
# native coverage builds
|
|
# SELinux rules which apply only to builds with native coverage
|
|
#
|
|
define(`with_native_coverage', ifelse(target_with_native_coverage, `true', userdebug_or_eng(`$1'), ))
|
|
|
|
#####################################
|
|
# Build-time-only test
|
|
# SELinux rules which are verified during build, but not as part of *TS testing.
|
|
#
|
|
define(`build_test_only', ifelse(target_exclude_build_test, `true', , $1))
|
|
|
|
####################################
|
|
# Fallback crash handling for processes that can't exec crash_dump (e.g. because of seccomp).
|
|
#
|
|
define(`crash_dump_fallback', `
|
|
userdebug_or_eng(`
|
|
allow $1 su:fifo_file append;
|
|
')
|
|
allow $1 anr_data_file:file append;
|
|
allow $1 dumpstate:fd use;
|
|
allow $1 incidentd:fd use;
|
|
# TODO: Figure out why write is needed.
|
|
allow $1 dumpstate:fifo_file { append write };
|
|
allow $1 incidentd:fifo_file { append write };
|
|
allow $1 system_server:fifo_file { append write };
|
|
allow $1 tombstoned:unix_stream_socket connectto;
|
|
allow $1 tombstoned:fd use;
|
|
allow $1 tombstoned_crash_socket:sock_file write;
|
|
allow $1 tombstone_data_file:file append;
|
|
')
|
|
|
|
#####################################
|
|
# WITH_DEXPREOPT builds
|
|
# SELinux rules which apply only when pre-opting.
|
|
#
|
|
define(`with_dexpreopt', ifelse(target_with_dexpreopt, `true', $1))
|
|
|
|
#####################################
|
|
# write_logd(domain)
|
|
# Ability to write to android log
|
|
# daemon via sockets
|
|
define(`write_logd', `
|
|
unix_socket_send($1, logdw, logd)
|
|
allow $1 pmsg_device:chr_file w_file_perms;
|
|
')
|
|
|
|
#####################################
|
|
# read_logd(domain)
|
|
# Ability to run logcat and read from android
|
|
# log daemon via sockets
|
|
define(`read_logd', `
|
|
allow $1 logcat_exec:file rx_file_perms;
|
|
unix_socket_connect($1, logdr, logd)
|
|
')
|
|
|
|
#####################################
|
|
# read_runtime_log_tags(domain)
|
|
# ability to directly map the runtime event log tags
|
|
define(`read_runtime_log_tags', `
|
|
allow $1 runtime_event_log_tags_file:file r_file_perms;
|
|
')
|
|
|
|
#####################################
|
|
# control_logd(domain)
|
|
# Ability to control
|
|
# android log daemon via sockets
|
|
define(`control_logd', `
|
|
# Group AID_LOG checked by filesystem & logd
|
|
# to permit control commands
|
|
unix_socket_connect($1, logd, logd)
|
|
')
|
|
|
|
#####################################
|
|
# use_keystore(domain)
|
|
# Ability to use keystore.
|
|
# Keystore is requires the following permissions
|
|
# to call getpidcon.
|
|
define(`use_keystore', `
|
|
allow keystore $1:dir search;
|
|
allow keystore $1:file { read open };
|
|
allow keystore $1:process getattr;
|
|
allow $1 apc_service:service_manager find;
|
|
allow $1 keystore_service:service_manager find;
|
|
allow $1 legacykeystore_service:service_manager find;
|
|
binder_call($1, keystore)
|
|
binder_call(keystore, $1)
|
|
')
|
|
|
|
#####################################
|
|
# use_credstore(domain)
|
|
# Ability to use credstore.
|
|
define(`use_credstore', `
|
|
allow credstore $1:dir search;
|
|
allow credstore $1:file { read open };
|
|
allow credstore $1:process getattr;
|
|
allow $1 credstore_service:service_manager find;
|
|
binder_call($1, credstore)
|
|
binder_call(credstore, $1)
|
|
')
|
|
|
|
###########################################
|
|
# use_drmservice(domain)
|
|
# Ability to use DrmService which requires
|
|
# DrmService to call getpidcon.
|
|
define(`use_drmservice', `
|
|
allow drmserver $1:dir search;
|
|
allow drmserver $1:file { read open };
|
|
allow drmserver $1:process getattr;
|
|
')
|
|
|
|
###########################################
|
|
# add_service(domain, service)
|
|
# Ability for domain to add a service to service_manager
|
|
# and find it. It also creates a neverallow preventing
|
|
# others from adding it.
|
|
define(`add_service', `
|
|
allow $1 $2:service_manager { add find };
|
|
neverallow { domain -$1 } $2:service_manager add;
|
|
|
|
# On debug builds with root, allow binder services to use binder over TCP.
|
|
# Not using rw_socket_perms_no_ioctl to avoid granting too many permissions.
|
|
userdebug_or_eng(`
|
|
allow $1 su:tcp_socket { accept getopt read write };
|
|
')
|
|
')
|
|
|
|
###########################################
|
|
# add_hwservice(domain, service)
|
|
# Ability for domain to add a service to hwservice_manager
|
|
# and find it. It also creates a neverallow preventing
|
|
# others from adding it.
|
|
define(`add_hwservice', `
|
|
allow $1 $2:hwservice_manager { add find };
|
|
allow $1 hidl_base_hwservice:hwservice_manager add;
|
|
neverallow { domain -$1 } $2:hwservice_manager add;
|
|
')
|
|
|
|
###########################################
|
|
# hal_attribute_hwservice(attribute, service)
|
|
# Ability for domain to get a service to hwservice_manager
|
|
# and find it. It also creates a neverallow preventing
|
|
# others from adding it.
|
|
#
|
|
# Used to pair hal_foo_client with hal_foo_hwservice
|
|
define(`hal_attribute_hwservice', `
|
|
allow $1_client $2:hwservice_manager find;
|
|
add_hwservice($1_server, $2)
|
|
|
|
build_test_only(`
|
|
# if you are hitting this neverallow, try using:
|
|
# hal_client_domain(<your domain>, hal_<foo>)
|
|
# instead
|
|
neverallow { domain -$1_client -$1_server } $2:hwservice_manager find;
|
|
')
|
|
')
|
|
|
|
###########################################
|
|
# hal_attribute_service(attribute, service)
|
|
# Ability for domain to get a service to service_manager
|
|
# and find it. It also creates a neverallow preventing
|
|
# others from adding it.
|
|
#
|
|
# Used to pair hal_foo_client with hal_foo_service
|
|
define(`hal_attribute_service', `
|
|
allow $1_client $2:service_manager find;
|
|
add_service($1_server, $2)
|
|
|
|
build_test_only(`
|
|
# if you are hitting this neverallow, try using:
|
|
# hal_client_domain(<your domain>, hal_<foo>)
|
|
# instead
|
|
neverallow {
|
|
domain
|
|
-$1_client
|
|
-$1_server
|
|
# some services are allowed to find all services
|
|
-atrace
|
|
-dumpstate
|
|
-shell
|
|
-system_app
|
|
-traceur_app
|
|
} $2:service_manager find;
|
|
')
|
|
')
|
|
|
|
###################################
|
|
# can_profile_heap(domain)
|
|
# Allow processes within the domain to have their heap profiled by central
|
|
# heapprofd.
|
|
define(`can_profile_heap', `
|
|
# Allow central daemon to send signal for client initialization.
|
|
allow heapprofd $1:process signal;
|
|
# Allow connecting to the daemon.
|
|
unix_socket_connect($1, heapprofd, heapprofd)
|
|
# Allow daemon to use the passed fds.
|
|
allow heapprofd $1:fd use;
|
|
# Allow to read and write to heapprofd shmem.
|
|
# The client needs to read the read and write pointers in order to write.
|
|
allow $1 heapprofd_tmpfs:file { read write getattr map };
|
|
# Use shared memory received over the unix socket.
|
|
allow $1 heapprofd:fd use;
|
|
|
|
# To read and write from the received file descriptors.
|
|
# /proc/[pid]/maps and /proc/[pid]/mem have the same SELinux label as the
|
|
# process they relate to.
|
|
# We need to write to /proc/$PID/page_idle to find idle allocations.
|
|
# The client only opens /proc/self/page_idle with RDWR, everything else
|
|
# with RDONLY.
|
|
# heapprofd cannot open /proc/$PID/mem itself, as it does not have
|
|
# sys_ptrace.
|
|
allow heapprofd $1:file rw_file_perms;
|
|
# Allow searching the /proc/[pid] directory for cmdline.
|
|
allow heapprofd $1:dir r_dir_perms;
|
|
')
|
|
|
|
###################################
|
|
# never_profile_heap(domain)
|
|
# Opt out of heap profiling by heapprofd.
|
|
define(`never_profile_heap', `
|
|
neverallow heapprofd $1:file read;
|
|
neverallow heapprofd $1:process signal;
|
|
')
|
|
|
|
###################################
|
|
# can_profile_perf(domain)
|
|
# Allow processes within the domain to be profiled, and have their stacks
|
|
# sampled, by traced_perf.
|
|
define(`can_profile_perf', `
|
|
# Allow directory & file read to traced_perf, as it stat(2)s /proc/[pid], and
|
|
# reads /proc/[pid]/cmdline.
|
|
allow traced_perf $1:file r_file_perms;
|
|
allow traced_perf $1:dir r_dir_perms;
|
|
|
|
# Allow central daemon to send signal to request /proc/[pid]/maps and
|
|
# /proc/[pid]/mem fds from this process.
|
|
allow traced_perf $1:process signal;
|
|
|
|
# Allow connecting to the daemon.
|
|
unix_socket_connect($1, traced_perf, traced_perf)
|
|
# Allow daemon to use the passed fds.
|
|
allow traced_perf $1:fd use;
|
|
')
|
|
|
|
###################################
|
|
# never_profile_perf(domain)
|
|
# Opt out of profiling by traced_perf.
|
|
define(`never_profile_perf', `
|
|
neverallow traced_perf $1:file read;
|
|
neverallow traced_perf $1:process signal;
|
|
')
|
|
|
|
###################################
|
|
# perfetto_producer(domain)
|
|
# Allow processes within the domain to write data to Perfetto.
|
|
# When applying this macro, you might need to also allow traced to use the
|
|
# producer tmpfs domain, if the producer will be the one creating the shared
|
|
# memory.
|
|
define(`perfetto_producer', `
|
|
allow $1 traced:fd use;
|
|
allow $1 traced_tmpfs:file { read write getattr map };
|
|
unix_socket_connect($1, traced_producer, traced)
|
|
|
|
# Also allow the service to use the producer file descriptors. This is
|
|
# necessary when the producer is creating the shared memory, as it will be
|
|
# passed to the service as a file descriptor (obtained from memfd_create).
|
|
allow traced $1:fd use;
|
|
')
|
|
|
|
###########################################
|
|
# dump_hal(hal_type)
|
|
# Ability to dump the hal debug info
|
|
#
|
|
define(`dump_hal', `
|
|
hal_client_domain(dumpstate, $1);
|
|
allow $1_server dumpstate:fifo_file write;
|
|
allow $1_server dumpstate:fd use;
|
|
')
|
|
|
|
#####################################
|
|
# treble_sysprop_neverallow(rules)
|
|
# SELinux neverallow rules which enforces the accessibility of each property
|
|
# outside the owner.
|
|
#
|
|
# For devices launching with R or later, exported properties must be explicitly marked as
|
|
# "restricted" or "public", depending on the accessibility outside the owner.
|
|
# For devices launching with Q or eariler, this neverallow rules can be relaxed with defining
|
|
# BUILD_BROKEN_TREBLE_SYSPROP_NEVERALLOW := true on BoardConfig.mk.
|
|
# See {partition}_{accessibility}_prop macros below.
|
|
#
|
|
# CTS uses these rules only for devices launching with R or later.
|
|
#
|
|
# TODO(b/131162102): deprecate BUILD_BROKEN_TREBLE_SYSPROP_NEVERALLOW
|
|
#
|
|
define(`treble_sysprop_neverallow', ifelse(target_treble_sysprop_neverallow, `true', $1,
|
|
ifelse(target_treble_sysprop_neverallow, `cts',
|
|
# BEGIN_LAUNCHING_WITH_R_ONLY -- this marker is used by CTS -- do not modify
|
|
$1
|
|
# END_LAUNCHING_WITH_R_ONLY -- this marker is used by CTS -- do not modify
|
|
, )))
|
|
|
|
#####################################
|
|
# enforce_sysprop_owner(rules)
|
|
# SELinux neverallow rules which enforces the owner of each property.
|
|
#
|
|
# For devices launching with S or later, all properties must be explicitly marked as one of:
|
|
# system_property_type, vendor_property_type, or product_property_type.
|
|
# For devices launching with R or eariler, this neverallow rules can be relaxed with defining
|
|
# BUILD_BROKEN_ENFORCE_SYSPROP_OWNER := true on BoardConfig.mk.
|
|
# See {partition}_{accessibility}_prop macros below.
|
|
#
|
|
# CTS uses these ules only for devices launching with S or later.
|
|
#
|
|
define(`enforce_sysprop_owner', ifelse(target_enforce_sysprop_owner, `true', $1,
|
|
ifelse(target_enforce_sysprop_owner, `cts',
|
|
# BEGIN_LAUNCHING_WITH_S_ONLY -- this marker is used by CTS -- do not modify
|
|
$1
|
|
# END_LAUNCHING_WITH_S_ONLY -- this marker is used by CTS -- do not modify
|
|
, )))
|
|
|
|
###########################################
|
|
# define_prop(name, owner, scope)
|
|
# Define a property with given owner and scope
|
|
#
|
|
define(`define_prop', `
|
|
type $1, property_type, $2_property_type, $2_$3_property_type;
|
|
')
|
|
|
|
###########################################
|
|
# system_internal_prop(name)
|
|
# Define a /system-owned property used only in /system
|
|
# For devices launching with Q or eariler, this restriction can be relaxed with
|
|
# BUILD_BROKEN_TREBLE_SYSPROP_NEVERALLOW := true
|
|
#
|
|
define(`system_internal_prop', `
|
|
define_prop($1, system, internal)
|
|
treble_sysprop_neverallow(`
|
|
neverallow { domain -coredomain } $1:file no_rw_file_perms;
|
|
')
|
|
')
|
|
|
|
###########################################
|
|
# system_restricted_prop(name)
|
|
# Define a /system-owned property which can't be written outside /system
|
|
# For devices launching with Q or eariler, this restriction can be relaxed with
|
|
# BUILD_BROKEN_TREBLE_SYSPROP_NEVERALLOW := true
|
|
#
|
|
define(`system_restricted_prop', `
|
|
define_prop($1, system, restricted)
|
|
treble_sysprop_neverallow(`
|
|
neverallow { domain -coredomain } $1:property_service set;
|
|
')
|
|
')
|
|
|
|
###########################################
|
|
# system_public_prop(name)
|
|
# Define a /system-owned property with no restrictions
|
|
#
|
|
define(`system_public_prop', `define_prop($1, system, public)')
|
|
|
|
###########################################
|
|
# system_vendor_config_prop(name)
|
|
# Define a /system-owned property which can only be written by vendor_init
|
|
# This is a macro for vendor-specific configuration properties which is meant
|
|
# to be set once from vendor_init.
|
|
#
|
|
define(`system_vendor_config_prop', `
|
|
system_public_prop($1)
|
|
set_prop(vendor_init, $1)
|
|
neverallow { domain -init -vendor_init } $1:property_service set;
|
|
')
|
|
|
|
###########################################
|
|
# product_internal_prop(name)
|
|
# Define a /product-owned property used only in /product
|
|
# For devices launching with Q or eariler, this restriction can be relaxed with
|
|
# BUILD_BROKEN_TREBLE_SYSPROP_NEVERALLOW := true
|
|
#
|
|
define(`product_internal_prop', `
|
|
define_prop($1, product, internal)
|
|
treble_sysprop_neverallow(`
|
|
neverallow { domain -coredomain } $1:file no_rw_file_perms;
|
|
')
|
|
')
|
|
|
|
###########################################
|
|
# product_restricted_prop(name)
|
|
# Define a /product-owned property which can't be written outside /product
|
|
# For devices launching with Q or eariler, this restriction can be relaxed with
|
|
# BUILD_BROKEN_TREBLE_SYSPROP_NEVERALLOW := true
|
|
#
|
|
define(`product_restricted_prop', `
|
|
define_prop($1, product, restricted)
|
|
treble_sysprop_neverallow(`
|
|
neverallow { domain -coredomain } $1:property_service set;
|
|
')
|
|
')
|
|
|
|
###########################################
|
|
# product_public_prop(name)
|
|
# Define a /product-owned property with no restrictions
|
|
#
|
|
define(`product_public_prop', `define_prop($1, product, public)')
|
|
|
|
###########################################
|
|
# vendor_internal_prop(name)
|
|
# Define a /vendor-owned property used only in /vendor
|
|
# For devices launching with Q or eariler, this restriction can be relaxed with
|
|
# BUILD_BROKEN_TREBLE_SYSPROP_NEVERALLOW := true
|
|
#
|
|
define(`vendor_internal_prop', `
|
|
define_prop($1, vendor, internal)
|
|
treble_sysprop_neverallow(`
|
|
# init and dumpstate are in coredomain, but should be able to read all props.
|
|
neverallow { coredomain -init -dumpstate } $1:file no_rw_file_perms;
|
|
')
|
|
')
|
|
|
|
###########################################
|
|
# vendor_restricted_prop(name)
|
|
# Define a /vendor-owned property which can't be written outside /vendor
|
|
# For devices launching with Q or eariler, this restriction can be relaxed with
|
|
# BUILD_BROKEN_TREBLE_SYSPROP_NEVERALLOW := true
|
|
#
|
|
define(`vendor_restricted_prop', `
|
|
define_prop($1, vendor, restricted)
|
|
treble_sysprop_neverallow(`
|
|
# init is in coredomain, but should be able to write all props.
|
|
neverallow { coredomain -init } $1:property_service set;
|
|
')
|
|
')
|
|
|
|
###########################################
|
|
# vendor_public_prop(name)
|
|
# Define a /vendor-owned property with no restrictions
|
|
#
|
|
define(`vendor_public_prop', `define_prop($1, vendor, public)')
|
|
|
|
#####################################
|
|
# read_fstab(domain)
|
|
# Ability to call ReadDefaultFstab() and ReadFstabFromFile().
|
|
#
|
|
define(`read_fstab', `
|
|
allow $1 { metadata_file gsi_metadata_file_type }:dir search;
|
|
allow $1 gsi_public_metadata_file:file r_file_perms;
|
|
allow $1 { proc_bootconfig proc_cmdline }:file r_file_perms;
|
|
')
|
|
|
|
######################################
|
|
# use_bootstrap_libs(domain)
|
|
# Allow domain to use bootstrap bionic libraries in system/lib[64]/bootstrap
|
|
define(`use_bootstrap_libs', `
|
|
allow $1 system_bootstrap_lib_file:dir r_dir_perms;
|
|
allow $1 system_bootstrap_lib_file:file { execute read open getattr map };
|
|
')
|