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>
82 lines
2.6 KiB
Text
82 lines
2.6 KiB
Text
# volume manager
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type vold, domain;
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type vold_exec, exec_type, file_type;
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init_daemon_domain(vold)
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typeattribute vold mlstrustedsubject;
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allow vold system_file:file x_file_perms;
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allow vold block_device:dir create_dir_perms;
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allow vold block_device:blk_file create_file_perms;
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allow vold device:dir write;
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allow vold devpts:chr_file rw_file_perms;
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allow vold rootfs:dir mounton;
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allow vold sdcard_type:dir mounton;
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allow vold sdcard_type:filesystem { mount remount unmount };
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allow vold sdcard_type:dir create_dir_perms;
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allow vold sdcard_type:file create_file_perms;
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allow vold tmpfs:filesystem { mount unmount };
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allow vold tmpfs:dir create_dir_perms;
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allow vold tmpfs:dir mounton;
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allow vold self:capability { net_admin dac_override mknod sys_admin chown fowner fsetid };
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allow vold self:netlink_kobject_uevent_socket create_socket_perms;
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allow vold app_data_file:dir search;
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allow vold app_data_file:file rw_file_perms;
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allow vold loop_device:blk_file rw_file_perms;
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allow vold dm_device:chr_file rw_file_perms;
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# For vold Process::killProcessesWithOpenFiles function.
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allow vold domain:dir r_dir_perms;
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allow vold domain:{ file lnk_file } r_file_perms;
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allow vold domain:process { signal sigkill };
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allow vold self:capability { sys_ptrace kill };
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# For blkid
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allow vold shell_exec:file rx_file_perms;
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# XXX Label sysfs files with a specific type?
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allow vold sysfs:file rw_file_perms;
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write_klog(vold)
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# Log fsck results
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allow vold fscklogs:dir rw_dir_perms;
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allow vold fscklogs:file create_file_perms;
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#
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# Rules to support encrypted fs support.
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#
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# Set property.
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unix_socket_connect(vold, property, init)
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# Unmount and mount the fs.
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allow vold labeledfs:filesystem { mount unmount remount };
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# Access /efs/userdata_footer.
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# XXX Split into a separate type?
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allow vold efs_file:file rw_file_perms;
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# Create and mount on /data/tmp_mnt.
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allow vold system_data_file:dir { create rw_dir_perms mounton };
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# Set scheduling policy of kernel processes
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allow vold kernel:process setsched;
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# Property Service
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allow vold vold_prop:property_service set;
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allow vold powerctl_prop:property_service set;
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allow vold ctl_default_prop:property_service set;
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# ASEC
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allow vold asec_image_file:file create_file_perms;
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allow vold asec_image_file:dir rw_dir_perms;
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security_access_policy(vold)
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relabelto_domain(vold)
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allow vold asec_apk_file:dir { rw_dir_perms setattr relabelfrom };
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allow vold asec_public_file:dir { relabelto setattr };
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allow vold asec_apk_file:file { r_file_perms setattr relabelfrom };
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allow vold asec_public_file:file { relabelto setattr };
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# Handle wake locks (used for device encryption)
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allow vold sysfs_wake_lock:file rw_file_perms;
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allow vold self:capability2 block_suspend;
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