am f3926937: Merge "Switch kernel and init to permissive_or_unconfined()."

* commit 'f39269371e24147f4a45ba281a79d800ec3e56c7':
  Switch kernel and init to permissive_or_unconfined().

init.te

@@ -1,9 +1,57 @@
 # init switches to init domain (via init.rc).
 type init, domain;
-# init is unconfined.
-unconfined_domain(init)
+permissive_or_unconfined(init)
 tmpfs_domain(init)
 
+# setrlimit
+allow init self:capability sys_resource;
+
+# Remove /dev/.booting, created before initial policy load or restorecon /dev.
+allow init tmpfs:file unlink;
+
+# Access pty created for fsck.
+allow init devpts:chr_file { read write open };
+
+# Create /dev/fscklogs files.
+allow init fscklogs:file create_file_perms;
+
+# Access /dev/__null__ node created prior to initial policy load.
+allow init tmpfs:chr_file write;
+
+# Access /dev/console.
+allow init console_device:chr_file rw_file_perms;
+
+# Access /dev/tty0.
+allow init tty_device:chr_file rw_file_perms;
+
+# Call mount(2).
+allow init self:capability sys_admin;
+
+# Create and mount on directories in /.
+allow init rootfs:dir create_dir_perms;
+allow init rootfs:dir mounton;
+
+# Mount on /dev/usb-ffs/adb.
+allow init device:dir mounton;
+
+# Create symlinks in /.
+allow init rootfs:lnk_file create;
+
+# Mount debugfs on /sys/kernel/debug.
+allow init sysfs:dir mounton;
+
+# Create cgroups mount points in tmpfs and mount cgroups on them.
+allow init tmpfs:dir create_dir_perms;
+allow init tmpfs:dir mounton;
+allow init cgroup:dir create_dir_perms;
+allow init cpuctl_device:dir { create mounton };
+
+# Create directories under /dev/cpuctl after chowning it to system.
+allow init self:capability dac_override;
+
+# Set system clock.
+allow init self:capability sys_time;
+
 allow init self:capability { sys_rawio mknod };
 
 # Mounting filesystems from block devices.
@@ -25,12 +73,28 @@ allow init contextmount_type:notdevfile_class_set r_file_perms;
 # restorecon /adb_keys or any other rootfs files to a more specific type.
 allow init rootfs:file relabelfrom;
 
-# restorecon and restorecon_recursive calls from init.rc files.
+# mkdir, symlink, write, rm/rmdir, chown/chmod, restorecon/restorecon_recursive from init.rc files.
+# chown/chmod require open+read+setattr required for open()+fchown/fchmod().
 # system/core/init.rc requires at least cache_file and data_file_type.
 # init.<board>.rc files often include device-specific types, so
 # we just allow all file types except /system files here.
+allow init self:capability { chown fowner fsetid };
+allow init {file_type -system_file -exec_type -app_data_file}:dir { create search getattr open read setattr };
+allow init {file_type -system_file -exec_type -keystore_data_file -security_file -app_data_file -shell_data_file}:dir { write add_name remove_name rmdir };
+allow init {file_type -system_file -exec_type -keystore_data_file -security_file -app_data_file -shell_data_file}:file { create getattr open read write setattr relabelfrom unlink };
+allow init {file_type -system_file -exec_type -keystore_data_file -security_file -app_data_file -shell_data_file}:{ sock_file fifo_file } { create getattr open read setattr relabelfrom unlink };
+allow init {file_type -system_file -exec_type -keystore_data_file -security_file -app_data_file -shell_data_file}:lnk_file { create getattr setattr relabelfrom unlink };
 allow init {file_type -system_file -exec_type}:dir_file_class_set relabelto;
+allow init sysfs:{ dir file lnk_file } { getattr relabelfrom };
 allow init sysfs_type:{ dir file lnk_file } relabelto;
+allow init dev_type:dir create_dir_perms;
+allow init dev_type:lnk_file create;
+
+# chown/chmod on pseudo files.
+allow init { fs_type -contextmount_type -sdcard_type -rootfs }:{ dir file } { open read setattr };
+
+# chown/chmod on devices.
+allow init qtaguid_device:chr_file { read open setattr };
 
 # Unlabeled file access for upgrades from 4.2.
 allow init unlabeled:dir { create_dir_perms relabelfrom };
@@ -39,9 +103,6 @@ allow init unlabeled:notdevfile_class_set { create_file_perms relabelfrom };
 # Create /data/security from init.rc post-fs-data.
 allow init security_file:dir { create setattr };
 
-# setprop selinux.reload_policy 1 from init.rc post-fs-data.
-allow init security_prop:property_service set;
-
 # Reload policy upon setprop selinux.reload_policy 1.
 r_dir_file(init, security_file)
 allow init kernel:security load_policy;
@@ -49,11 +110,32 @@ allow init kernel:security load_policy;
 # Any operation that can modify the kernel ring buffer, e.g. clear
 # or a read that consumes the messages that were read.
 allow init kernel:system syslog_mod;
+allow init self:capability2 syslog;
+
+# Triggered by chmod 0444 /sys/fs/selinux/policy.
+allow init kernel:security read_policy;
 
 # Set usermodehelpers and /proc security settings.
 allow init usermodehelper:file rw_file_perms;
 allow init proc_security:file rw_file_perms;
 
+# Write to /proc/sys/kernel/panic_on_oops.
+allow init proc:file w_file_perms;
+
+# Write to /proc/sys/net/ping_group_range and other /proc/sys/net files.
+allow init proc_net:file w_file_perms;
+allow init self:capability net_admin;
+
+# Write to /proc/sysrq-trigger.
+allow init proc_sysrq:file w_file_perms;
+
+# Reboot.
+allow init self:capability sys_boot;
+
+# Write to sysfs nodes.
+allow init sysfs_type:dir r_dir_perms;
+allow init sysfs_type:file w_file_perms;
+
 # Transitions to seclabel processes in init.rc
 domain_trans(init, rootfs, adbd)
 domain_trans(init, rootfs, healthd)
@@ -71,6 +153,7 @@ domain_trans(init, rootfs, watchdogd)
 allow init { domain -lmkd }:process noatsecure;
 
 # Support "adb shell stop"
+allow init self:capability kill;
 allow init domain:process sigkill;
 
 # Init creates keystore's directory on boot, and walks through
@@ -82,12 +165,25 @@ allow init keystore_data_file:file { getattr };
 allow init shell_data_file:dir { open create read getattr setattr search };
 allow init shell_data_file:file { getattr };
 
+# Set UID and GID for services.
+allow init self:capability { setuid setgid };
+
 # Use setexeccon(), setfscreatecon(), and setsockcreatecon().
 # setexec is for services with seclabel options.
 # setfscreate is for labeling directories and socket files.
 # setsockcreate is for labeling local/unix domain sockets.
 allow init self:process { setexec setfscreate setsockcreate };
 
+# Perform SELinux access checks on setting properties.
+selinux_check_access(init)
+
+# Ask the kernel for the new context on services to label their sockets.
+allow init kernel:security compute_create;
+
+# Create sockets for the services.
+allow init domain:unix_stream_socket { create bind };
+allow init domain:unix_dgram_socket { create bind };
+
 # Create /data/property and files within it.
 allow init property_data_file:dir create_dir_perms;
 allow init property_data_file:file create_file_perms;
@@ -97,6 +193,7 @@ allow init property_type:property_service set;
 
 # Run "ifup lo" to bring up the localhost interface
 allow init self:udp_socket { create ioctl };
+allow init self:capability net_raw;
 
 # This line seems suspect, as it should not really need to
 # set scheduling parameters for a kernel domain task.
@@ -111,7 +208,7 @@ allow init swap_block_device:blk_file rw_file_perms;
 allow init hw_random_device:chr_file r_file_perms;
 
 # Create and access /dev files without a specific type,
-# e.g. /dev/.coldboot_done.
+# e.g. /dev/.coldboot_done, /dev/.booting
 # TODO:  Move these files into their own type unless they are
 # only ever accessed by init.
 allow init device:file create_file_perms;
@@ -124,6 +221,9 @@ auditallow init device:file create_file_perms;
 allow init device:chr_file { rw_file_perms setattr };
 auditallow init device:chr_file { rw_file_perms setattr };
 
+# keychord configuration
+allow init self:capability sys_tty_config;
+
 ###
 ### neverallow rules
 ###

kernel.te

@@ -1,16 +1,19 @@
 # Life begins with the kernel.
 type kernel, domain;
+permissive_or_unconfined(kernel)
+
+allow kernel self:capability sys_nice;
 
 # Run /init before we have switched domains.
 allow kernel rootfs:file execute_no_trans;
 
+# /dev/__null__ node created by init prior to policy load.
+allow kernel tmpfs:chr_file rw_file_perms;
+
 # setcon to init domain.
 allow kernel self:process setcurrent;
 allow kernel init:process dyntransition;
 
-# The kernel is unconfined.
-unconfined_domain(kernel)
-
 # cgroup filesystem initialization prior to setting the cgroup root directory label.
 allow kernel unlabeled:dir search;
 
@@ -19,19 +22,26 @@ allow kernel usbfs:filesystem mount;
 
 # init direct restorecon calls prior to switching to init domain
 # /dev and /dev/socket
+allow kernel tmpfs:dir relabelfrom;
 allow kernel { device socket_device }:dir relabelto;
 # /dev/__properties__
+allow kernel tmpfs:file relabelfrom;
 allow kernel properties_device:file relabelto;
 # /sys
 allow kernel sysfs:{ dir file lnk_file } relabelfrom;
 allow kernel sysfs_type:{ dir file lnk_file } relabelto;
+allow kernel sysfs_type:dir r_dir_perms;
 
 # Initial setenforce by init prior to switching to init domain.
 # We use dontaudit instead of allow to prevent a kernel spawned userspace
 # process from turning off SELinux once enabled.
 dontaudit kernel self:security setenforce;
 
+# Write to /proc/1/oom_adj prior to switching to init domain.
+allow kernel self:capability sys_resource;
+
 # Set checkreqprot by init.rc prior to switching to init domain.
+allow kernel selinuxfs:file write;
 allow kernel self:security setcheckreqprot;
 
 # MTP sync (b/15835289)