65 lines
2.3 KiB
Text
65 lines
2.3 KiB
Text
# Android heap profiling daemon. go/heapprofd.
|
|
#
|
|
# On user builds, this daemon is responsible for receiving the initial
|
|
# profiling configuration, finding matching target processes (if profiling by
|
|
# process name), and sending the activation signal to them (+ setting system
|
|
# properties for new processes to start profiling from startup). When profiling
|
|
# is triggered in a process, it spawns a private heapprofd subprocess (in its
|
|
# own SELinux domain), which will exclusively handle profiling of its parent.
|
|
#
|
|
# On debug builds, this central daemon performs profiling for all target
|
|
# processes (which talk directly to this daemon).
|
|
type heapprofd_exec, exec_type, file_type, system_file_type;
|
|
type heapprofd_tmpfs, file_type;
|
|
|
|
init_daemon_domain(heapprofd)
|
|
tmpfs_domain(heapprofd)
|
|
|
|
# Allow apps in other MLS contexts (for multi-user) to access
|
|
# shared memory buffers created by heapprofd.
|
|
typeattribute heapprofd_tmpfs mlstrustedobject;
|
|
|
|
set_prop(heapprofd, heapprofd_prop);
|
|
|
|
# Necessary for /proc/[pid]/cmdline access & sending signals.
|
|
typeattribute heapprofd mlstrustedsubject;
|
|
|
|
# Allow sending signals to processes. This excludes SIGKILL, SIGSTOP and
|
|
# SIGCHLD, which are controlled by separate permissions.
|
|
allow heapprofd self:capability kill;
|
|
|
|
# When scanning /proc/[pid]/cmdline to find matching processes for by-name
|
|
# profiling, only whitelisted domains will be allowed by SELinux. Avoid
|
|
# spamming logs with denials for entries that we can not access.
|
|
dontaudit heapprofd domain:dir { search open };
|
|
|
|
# Write trace data to the Perfetto traced daemon. This requires connecting to
|
|
# its producer socket and obtaining a (per-process) tmpfs fd.
|
|
allow heapprofd traced:fd use;
|
|
allow heapprofd traced_tmpfs:file { read write getattr map };
|
|
unix_socket_connect(heapprofd, traced_producer, traced)
|
|
|
|
# When handling profiling for all processes, heapprofd needs to read
|
|
# executables/libraries/etc to do stack unwinding.
|
|
userdebug_or_eng(`
|
|
r_dir_file(heapprofd, system_file_type)
|
|
r_dir_file(heapprofd, apk_data_file)
|
|
r_dir_file(heapprofd, dalvikcache_data_file)
|
|
r_dir_file(heapprofd, vendor_file_type)
|
|
')
|
|
|
|
never_profile_heap(`{
|
|
bpfloader
|
|
init
|
|
kernel
|
|
keystore
|
|
llkd
|
|
logd
|
|
ueventd
|
|
vendor_init
|
|
vold
|
|
}')
|
|
|
|
full_treble_only(`
|
|
neverallow heapprofd vendor_file:file { no_w_file_perms no_x_file_perms };
|
|
')
|