tequilaOS/platform_system_sepolicy
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Merge "system_server: neverallow blk_file read/write"

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Nick Kralevich 2015-03-11 20:07:53 +00:00 committed by Gerrit Code Review
commit 5434a8a913
2 changed files with 6 additions and 0 deletions
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1
neverallow_macros
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@ -1,5 +1,6 @@
#
# Common neverallow permissions
define(`no_w_file_perms', `{ append create link unlink relabelfrom rename setattr write }')
define(`no_rw_file_perms', `{ no_w_file_perms open read ioctl lock }')
define(`no_x_file_perms', `{ execute execute_no_trans }')
define(`no_w_dir_perms', `{ add_name create link relabelfrom remove_name rename reparent rmdir setattr write }')

5
system_server.te
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@ -492,3 +492,8 @@ neverallow system_server { bluetooth_data_file nfc_data_file shell_data_file app
# system server to dynamically load a dex file, something we do not
# want to allow.
neverallow system_server dex2oat_exec:file no_x_file_perms;
# The only block device system_server should be accessing is
# the frp_block_device. This helps avoid a system_server to root
# escalation by writing to raw block devices.
neverallow system_server { dev_type -frp_block_device }:blk_file no_rw_file_perms;