ab7764bf82
* commit '7028bdccd5b3e91928d345990587738212973f1d': neverallow: domain execute data_file_type
87 lines
3.6 KiB
Text
87 lines
3.6 KiB
Text
# zygote
|
|
type zygote, domain;
|
|
type zygote_exec, exec_type, file_type;
|
|
|
|
init_daemon_domain(zygote)
|
|
typeattribute zygote mlstrustedsubject;
|
|
# Override DAC on files and switch uid/gid.
|
|
allow zygote self:capability { dac_override setgid setuid fowner chown };
|
|
# Drop capabilities from bounding set.
|
|
allow zygote self:capability setpcap;
|
|
# Switch SELinux context to app domains.
|
|
allow zygote self:process setcurrent;
|
|
allow zygote system_server:process dyntransition;
|
|
allow zygote appdomain:process dyntransition;
|
|
# Allow zygote to read app /proc/pid dirs (b/10455872)
|
|
allow zygote appdomain:dir { getattr search };
|
|
allow zygote appdomain:file { r_file_perms };
|
|
# Move children into the peer process group.
|
|
allow zygote system_server:process { getpgid setpgid };
|
|
allow zygote appdomain:process { getpgid setpgid };
|
|
# Read system data.
|
|
allow zygote system_data_file:dir r_dir_perms;
|
|
allow zygote system_data_file:file r_file_perms;
|
|
# Write to /data/dalvik-cache.
|
|
allow zygote dalvikcache_data_file:dir create_dir_perms;
|
|
allow zygote dalvikcache_data_file:file create_file_perms;
|
|
# Create symlinks in /data/dalvik-cache
|
|
allow zygote dalvikcache_data_file:lnk_file create_file_perms;
|
|
# Write to /data/resource-cache
|
|
allow zygote resourcecache_data_file:dir rw_dir_perms;
|
|
allow zygote resourcecache_data_file:file create_file_perms;
|
|
# For art.
|
|
allow zygote dalvikcache_data_file:file execute;
|
|
# Execute idmap and dex2oat within zygote's own domain.
|
|
# TODO: Should either of these be transitioned to the same domain
|
|
# used by installd or stay in-domain for zygote?
|
|
allow zygote idmap_exec:file rx_file_perms;
|
|
allow zygote dex2oat_exec:file rx_file_perms;
|
|
# Control cgroups.
|
|
allow zygote cgroup:dir create_dir_perms;
|
|
allow zygote self:capability sys_admin;
|
|
# Check validity of SELinux context before use.
|
|
selinux_check_context(zygote)
|
|
# Check SELinux permissions.
|
|
selinux_check_access(zygote)
|
|
# Read /seapp_contexts and /data/security/seapp_contexts
|
|
security_access_policy(zygote)
|
|
|
|
# Native bridge functionality requires that zygote replaces
|
|
# /proc/cpuinfo with /system/lib/<ISA>/cpuinfo using a bind mount
|
|
allow zygote proc_cpuinfo:file mounton;
|
|
|
|
# Allow remounting rootfs as MS_SLAVE
|
|
allow zygote rootfs:dir mounton;
|
|
allow zygote sdcard_type:dir { write search setattr create add_name mounton }; # TODO: deprecated in M
|
|
dontaudit zygote self:capability fsetid; # TODO: deprecated in M
|
|
allow zygote tmpfs:dir { write create add_name setattr mounton search }; # TODO: deprecated in M
|
|
allow zygote tmpfs:filesystem { mount unmount };
|
|
allow zygote fuse:filesystem { unmount };
|
|
allow zygote labeledfs:filesystem remount; # TODO: deprecated in M
|
|
|
|
# Allowed to create user-specific storage source if started before vold
|
|
allow zygote mnt_user_file:dir create_dir_perms;
|
|
allow zygote mnt_user_file:lnk_file create_file_perms;
|
|
# Allowed to mount user-specific storage into place
|
|
allow zygote storage_file:dir { search mounton };
|
|
|
|
# Handle --invoke-with command when launching Zygote with a wrapper command.
|
|
allow zygote zygote_exec:file rx_file_perms;
|
|
|
|
###
|
|
### neverallow rules
|
|
###
|
|
|
|
# Ensure that all types assigned to app processes are included
|
|
# in the appdomain attribute, so that all allow and neverallow rules
|
|
# written on appdomain are applied to all app processes.
|
|
# This is achieved by ensuring that it is impossible for zygote to
|
|
# setcon (dyntransition) to any types other than those associated
|
|
# with appdomain plus system_server.
|
|
neverallow zygote ~{ appdomain system_server }:process dyntransition;
|
|
|
|
# Zygote should never execute anything from /data except for /data/dalvik-cache files.
|
|
neverallow zygote {
|
|
data_file_type
|
|
-dalvikcache_data_file # map PROT_EXEC
|
|
}:file no_x_file_perms;
|