1601132086
Replace * or any permission set containing create with create_socket_perms or create_stream_socket_perms. Add net_domain() to all domains using network sockets and delete rules already covered by domain.te or net.te. For netlink_route_socket, only nlmsg_write needs to be separately granted to specific domains that are permitted to modify the routing table. Clarification: read/write permissions are just ability to perform read/recv() or write/send() on the socket, whereas nlmsg_read/ nlmsg_write permissions control ability to observe or modify the underlying kernel state accessed via the socket. See security/selinux/nlmsgtab.c in the kernel for the mapping of netlink message types to nlmsg_read or nlmsg_write. Delete legacy rule for b/12061011. This change does not touch any rules where only read/write were allowed to a socket created by another domain (inherited across exec or received across socket or binder IPC). We may wish to rewrite some or all of those rules with the rw_socket_perms macro but that is a separate change. Change-Id: Ib0637ab86f6d388043eff928e5d96beb02e5450e Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
40 lines
1.4 KiB
Text
40 lines
1.4 KiB
Text
# drmserver - DRM service
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type drmserver, domain;
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type drmserver_exec, exec_type, file_type;
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init_daemon_domain(drmserver)
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typeattribute drmserver mlstrustedsubject;
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net_domain(drmserver)
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# Perform Binder IPC to system server.
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binder_use(drmserver)
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binder_call(drmserver, system_server)
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binder_call(drmserver, appdomain)
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binder_service(drmserver)
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# Perform Binder IPC to mediaserver
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binder_call(drmserver, mediaserver)
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allow drmserver sdcard_type:dir search;
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allow drmserver drm_data_file:dir create_dir_perms;
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allow drmserver drm_data_file:file create_file_perms;
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allow drmserver tee_device:chr_file rw_file_perms;
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allow drmserver platform_app_data_file:file { read write getattr };
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allow drmserver app_data_file:file { read write getattr };
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allow drmserver sdcard_type:file { read write getattr };
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r_dir_file(drmserver, efs_file)
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type drmserver_socket, file_type;
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# /data/app/tlcd_sock socket file.
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# Clearly, /data/app is the most logical place to create a socket. Not.
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allow drmserver apk_data_file:dir rw_dir_perms;
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type_transition drmserver apk_data_file:sock_file drmserver_socket;
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allow drmserver drmserver_socket:sock_file create_file_perms;
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allow drmserver tee:unix_stream_socket connectto;
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# Delete old socket file if present.
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allow drmserver apk_data_file:sock_file unlink;
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# After taking a video, drmserver looks at the video file.
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r_dir_file(drmserver, media_rw_data_file)
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