d22987b4da
Motivation: Domain is overly permissive. Start removing permissions from domain and assign them to the domain_deprecated attribute. Domain_deprecated and domain can initially be assigned to all domains. The goal is to not assign domain_deprecated to new domains and to start removing domain_deprecated where it is not required or reassigning the appropriate permissions to the inheriting domain when necessary. Bug: 25433265 Change-Id: I8b11cb137df7bdd382629c98d916a73fe276413c
44 lines
1.2 KiB
Plaintext
44 lines
1.2 KiB
Plaintext
# Any fsck program run by init
|
|
type fsck, domain, domain_deprecated;
|
|
type fsck_exec, exec_type, file_type;
|
|
|
|
init_daemon_domain(fsck)
|
|
|
|
# /dev/__null__ created by init prior to policy load,
|
|
# open fd inherited by fsck.
|
|
allow fsck tmpfs:chr_file { read write ioctl };
|
|
|
|
# Inherit and use pty created by android_fork_execvp_ext().
|
|
allow fsck devpts:chr_file { read write ioctl getattr };
|
|
|
|
# Allow stdin/out back to vold
|
|
allow fsck vold:fd use;
|
|
allow fsck vold:fifo_file { read write getattr };
|
|
|
|
# Run fsck on certain block devices
|
|
allow fsck block_device:dir search;
|
|
allow fsck userdata_block_device:blk_file rw_file_perms;
|
|
allow fsck cache_block_device:blk_file rw_file_perms;
|
|
allow fsck dm_device:blk_file rw_file_perms;
|
|
|
|
###
|
|
### neverallow rules
|
|
###
|
|
|
|
# fsck should never be run on these block devices
|
|
neverallow fsck {
|
|
boot_block_device
|
|
frp_block_device
|
|
metadata_block_device
|
|
recovery_block_device
|
|
root_block_device
|
|
swap_block_device
|
|
system_block_device
|
|
vold_device
|
|
}:blk_file no_rw_file_perms;
|
|
|
|
# Only allow entry from init or vold via fsck binaries
|
|
neverallow { domain -init -vold } fsck:process transition;
|
|
neverallow domain fsck:process dyntransition;
|
|
neverallow fsck { file_type fs_type -fsck_exec }:file entrypoint;
|