platform_system_sepolicy/public/runas.te
Andreas Gampe 4481b885c9 Selinux: Give runas permission to read system_data_file links
Run-as is running a command under an app's uid and in its data
directory. That data directory may be accessed through a symlink
from /data/user. So give runas rights to read such a symlink.

Bug: 66292688
Test: manual
Test: CTS JVMTI tests
Change-Id: I0e0a40d11bc00d3ec1eee561b6223732a0d2eeb6
2017-09-20 21:34:55 -07:00

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1.4 KiB
Text

type runas, domain, mlstrustedsubject;
type runas_exec, exec_type, file_type;
allow runas adbd:fd use;
allow runas adbd:process sigchld;
allow runas adbd:unix_stream_socket { read write };
allow runas shell:fd use;
allow runas shell:fifo_file { read write };
allow runas shell:unix_stream_socket { read write };
allow runas devpts:chr_file { read write ioctl };
allow runas shell_data_file:file { read write };
# run-as reads package information.
allow runas system_data_file:file r_file_perms;
allow runas system_data_file:lnk_file getattr;
# The app's data dir may be accessed through a symlink.
allow runas system_data_file:lnk_file read;
# run-as checks and changes to the app data dir.
dontaudit runas self:capability dac_override;
allow runas app_data_file:dir { getattr search };
# run-as switches to the app UID/GID.
allow runas self:capability { setuid setgid };
# run-as switches to the app security context.
selinux_check_context(runas) # validate context
allow runas self:process setcurrent;
allow runas non_system_app_set:process dyntransition; # setcon
# runas/libselinux needs access to seapp_contexts_file to
# determine which domain to transition to.
allow runas seapp_contexts_file:file r_file_perms;
###
### neverallow rules
###
# run-as cannot have capabilities other than CAP_SETUID and CAP_SETGID
neverallow runas self:capability ~{ setuid setgid };
neverallow runas self:capability2 *;