You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
2.2 KiB
73 lines
2.2 KiB
# android user-space log manager |
|
type logd, domain, mlstrustedsubject; |
|
type logd_exec, exec_type, file_type; |
|
|
|
# Read access to pseudo filesystems. |
|
r_dir_file(logd, cgroup) |
|
r_dir_file(logd, proc) |
|
r_dir_file(logd, proc_meminfo) |
|
r_dir_file(logd, proc_net) |
|
|
|
allow logd self:capability { setuid setgid setpcap sys_nice audit_control }; |
|
allow logd self:capability2 syslog; |
|
allow logd self:netlink_audit_socket { create_socket_perms_no_ioctl nlmsg_write }; |
|
allow logd kernel:system syslog_read; |
|
allow logd kmsg_device:chr_file w_file_perms; |
|
allow logd system_data_file:{ file lnk_file } r_file_perms; |
|
allow logd pstorefs:dir search; |
|
allow logd pstorefs:file r_file_perms; |
|
userdebug_or_eng(` |
|
# Access to /data/misc/logd/event-log-tags |
|
allow logd misc_logd_file:dir r_dir_perms; |
|
allow logd misc_logd_file:file rw_file_perms; |
|
') |
|
allow logd runtime_event_log_tags_file:file rw_file_perms; |
|
|
|
# Access device logging gating property |
|
get_prop(logd, device_logging_prop) |
|
|
|
r_dir_file(logd, domain) |
|
|
|
allow logd kernel:system syslog_mod; |
|
|
|
control_logd(logd) |
|
read_runtime_log_tags(logd) |
|
|
|
allow runtime_event_log_tags_file tmpfs:filesystem associate; |
|
# Typically harmlessly blindly trying to access via liblog |
|
# event tag mapping while in the untrusted_app domain. |
|
# Access for that domain is controlled and gated via the |
|
# event log tag service (albeit at a performance penalty, |
|
# expected to be locally cached). |
|
dontaudit domain runtime_event_log_tags_file:file { open read }; |
|
|
|
### |
|
### Neverallow rules |
|
### |
|
### logd should NEVER do any of this |
|
|
|
# Block device access. |
|
neverallow logd dev_type:blk_file { read write }; |
|
|
|
# ptrace any other app |
|
neverallow logd domain:process ptrace; |
|
|
|
# ... and nobody may ptrace me (except on userdebug or eng builds) |
|
neverallow { domain userdebug_or_eng(`-crash_dump') } logd:process ptrace; |
|
|
|
# Write to /system. |
|
neverallow logd system_file:dir_file_class_set write; |
|
|
|
# Write to files in /data/data or system files on /data |
|
neverallow logd { app_data_file system_data_file }:dir_file_class_set write; |
|
|
|
# Only init is allowed to enter the logd domain via exec() |
|
neverallow { domain -init } logd:process transition; |
|
neverallow * logd:process dyntransition; |
|
|
|
# protect the event-log-tags file |
|
neverallow { |
|
domain |
|
-init |
|
-logd |
|
} runtime_event_log_tags_file:file no_w_file_perms;
|
|
|