From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: flawedworld <38294951+flawedworld@users.noreply.github.com>
Date: Mon, 5 Apr 2021 02:26:20 +0100
Subject: [PATCH] allow init to control kernel.yama.ptrace_scope

[tad@spotco.us]: added to older targets to match

Change-Id: Id364a6a0e088be3bb00b245d580e29980f5c2650
---
 prebuilts/api/26.0/private/domain.te      | 1 +
 prebuilts/api/26.0/private/genfs_contexts | 1 +
 prebuilts/api/26.0/public/init.te         | 3 +++
 prebuilts/api/27.0/private/domain.te      | 1 +
 prebuilts/api/27.0/private/genfs_contexts | 1 +
 prebuilts/api/27.0/public/init.te         | 3 +++
 prebuilts/api/28.0/private/domain.te      | 1 +
 prebuilts/api/28.0/private/genfs_contexts | 1 +
 prebuilts/api/28.0/public/init.te         | 3 +++
 prebuilts/api/29.0/private/domain.te      | 1 +
 prebuilts/api/29.0/private/genfs_contexts | 1 +
 prebuilts/api/29.0/public/init.te         | 3 +++
 private/domain.te                         | 1 +
 private/genfs_contexts                    | 1 +
 public/init.te                            | 3 +++
 15 files changed, 25 insertions(+)

diff --git a/prebuilts/api/26.0/private/domain.te b/prebuilts/api/26.0/private/domain.te
index d37a0bd26..69f98161c 100644
--- a/prebuilts/api/26.0/private/domain.te
+++ b/prebuilts/api/26.0/private/domain.te
@@ -7,6 +7,7 @@ allow domain crash_dump:process sigchld;
 # with other UIDs to these whitelisted domains.
 neverallow {
   domain
+  -init
   -vold
   -dumpstate
   -storaged
diff --git a/prebuilts/api/26.0/private/genfs_contexts b/prebuilts/api/26.0/private/genfs_contexts
index 753cabf15..67203c998 100644
--- a/prebuilts/api/26.0/private/genfs_contexts
+++ b/prebuilts/api/26.0/private/genfs_contexts
@@ -29,6 +29,7 @@ genfscon proc /sys/kernel/perf_event_max_sample_rate u:object_r:proc_perf:s0
 genfscon proc /sys/kernel/poweroff_cmd u:object_r:usermodehelper:s0
 genfscon proc /sys/kernel/randomize_va_space u:object_r:proc_security:s0
 genfscon proc /sys/kernel/usermodehelper u:object_r:usermodehelper:s0
+genfscon proc /sys/kernel/yama/ptrace_scope u:object_r:proc_security:s0
 genfscon proc /sys/net u:object_r:proc_net:s0
 genfscon proc /sys/vm/mmap_min_addr u:object_r:proc_security:s0
 genfscon proc /sys/vm/mmap_rnd_bits u:object_r:proc_security:s0
diff --git a/prebuilts/api/26.0/public/init.te b/prebuilts/api/26.0/public/init.te
index 6d43ef463..04422e1d0 100644
--- a/prebuilts/api/26.0/public/init.te
+++ b/prebuilts/api/26.0/public/init.te
@@ -93,6 +93,9 @@ allow init self:capability sys_time;
 
 allow init self:capability { sys_rawio mknod };
 
+# Set /proc/sys/kernel/yama/ptrace_scope
+allow init self:capability { sys_ptrace };
+
 # Mounting filesystems from block devices.
 allow init dev_type:blk_file r_file_perms;
 
diff --git a/prebuilts/api/27.0/private/domain.te b/prebuilts/api/27.0/private/domain.te
index d37a0bd26..69f98161c 100644
--- a/prebuilts/api/27.0/private/domain.te
+++ b/prebuilts/api/27.0/private/domain.te
@@ -7,6 +7,7 @@ allow domain crash_dump:process sigchld;
 # with other UIDs to these whitelisted domains.
 neverallow {
   domain
+  -init
   -vold
   -dumpstate
   -storaged
diff --git a/prebuilts/api/27.0/private/genfs_contexts b/prebuilts/api/27.0/private/genfs_contexts
index 606d46cbe..ac54e423a 100644
--- a/prebuilts/api/27.0/private/genfs_contexts
+++ b/prebuilts/api/27.0/private/genfs_contexts
@@ -29,6 +29,7 @@ genfscon proc /sys/kernel/perf_event_max_sample_rate u:object_r:proc_perf:s0
 genfscon proc /sys/kernel/poweroff_cmd u:object_r:usermodehelper:s0
 genfscon proc /sys/kernel/randomize_va_space u:object_r:proc_security:s0
 genfscon proc /sys/kernel/usermodehelper u:object_r:usermodehelper:s0
+genfscon proc /sys/kernel/yama/ptrace_scope u:object_r:proc_security:s0
 genfscon proc /sys/net u:object_r:proc_net:s0
 genfscon proc /sys/vm/mmap_min_addr u:object_r:proc_security:s0
 genfscon proc /sys/vm/mmap_rnd_bits u:object_r:proc_security:s0
diff --git a/prebuilts/api/27.0/public/init.te b/prebuilts/api/27.0/public/init.te
index e6162a939..78d1ab527 100644
--- a/prebuilts/api/27.0/public/init.te
+++ b/prebuilts/api/27.0/public/init.te
@@ -98,6 +98,9 @@ allow init self:capability sys_time;
 
 allow init self:capability { sys_rawio mknod };
 
+# Set /proc/sys/kernel/yama/ptrace_scope
+allow init self:capability { sys_ptrace };
+
 # Mounting filesystems from block devices.
 allow init dev_type:blk_file r_file_perms;
 
diff --git a/prebuilts/api/28.0/private/domain.te b/prebuilts/api/28.0/private/domain.te
index fb6ba4f78..e4bf76af7 100644
--- a/prebuilts/api/28.0/private/domain.te
+++ b/prebuilts/api/28.0/private/domain.te
@@ -7,6 +7,7 @@ allow domain crash_dump:process sigchld;
 # with other UIDs to these whitelisted domains.
 neverallow {
   domain
+  -init
   -vold
   -dumpstate
   userdebug_or_eng(`-incidentd')
diff --git a/prebuilts/api/28.0/private/genfs_contexts b/prebuilts/api/28.0/private/genfs_contexts
index 44ca95fd5..89b55b28d 100644
--- a/prebuilts/api/28.0/private/genfs_contexts
+++ b/prebuilts/api/28.0/private/genfs_contexts
@@ -58,6 +58,7 @@ genfscon proc /sys/kernel/sched_tunable_scaling u:object_r:proc_sched:s0
 genfscon proc /sys/kernel/sched_wakeup_granularity_ns u:object_r:proc_sched:s0
 genfscon proc /sys/kernel/sysrq u:object_r:proc_sysrq:s0
 genfscon proc /sys/kernel/usermodehelper u:object_r:usermodehelper:s0
+genfscon proc /sys/kernel/yama/ptrace_scope u:object_r:proc_security:s0
 genfscon proc /sys/net u:object_r:proc_net:s0
 genfscon proc /sys/vm/dirty_background_ratio u:object_r:proc_dirty:s0
 genfscon proc /sys/vm/dirty_expire_centisecs u:object_r:proc_dirty:s0
diff --git a/prebuilts/api/28.0/public/init.te b/prebuilts/api/28.0/public/init.te
index dafc06f99..bc38c7760 100644
--- a/prebuilts/api/28.0/public/init.te
+++ b/prebuilts/api/28.0/public/init.te
@@ -112,6 +112,9 @@ allow init self:global_capability_class_set sys_time;
 
 allow init self:global_capability_class_set { sys_rawio mknod };
 
+# Set /proc/sys/kernel/yama/ptrace_scope
+allow init self:capability { sys_ptrace };
+
 # Mounting filesystems from block devices.
 allow init dev_type:blk_file r_file_perms;
 
diff --git a/prebuilts/api/29.0/private/domain.te b/prebuilts/api/29.0/private/domain.te
index 1d26761d6..62cbb04a1 100644
--- a/prebuilts/api/29.0/private/domain.te
+++ b/prebuilts/api/29.0/private/domain.te
@@ -86,6 +86,7 @@ userdebug_or_eng(`
 # with other UIDs to these whitelisted domains.
 neverallow {
   domain
+  -init
   -vold
   userdebug_or_eng(`-llkd')
   -dumpstate
diff --git a/prebuilts/api/29.0/private/genfs_contexts b/prebuilts/api/29.0/private/genfs_contexts
index e72803627..27828d91b 100644
--- a/prebuilts/api/29.0/private/genfs_contexts
+++ b/prebuilts/api/29.0/private/genfs_contexts
@@ -71,6 +71,7 @@ genfscon proc /sys/kernel/sched_tunable_scaling u:object_r:proc_sched:s0
 genfscon proc /sys/kernel/sched_wakeup_granularity_ns u:object_r:proc_sched:s0
 genfscon proc /sys/kernel/sysrq u:object_r:proc_sysrq:s0
 genfscon proc /sys/kernel/usermodehelper u:object_r:usermodehelper:s0
+genfscon proc /sys/kernel/yama/ptrace_scope u:object_r:proc_security:s0
 genfscon proc /sys/net u:object_r:proc_net:s0
 genfscon proc /sys/vm/dirty_background_ratio u:object_r:proc_dirty:s0
 genfscon proc /sys/vm/dirty_expire_centisecs u:object_r:proc_dirty:s0
diff --git a/prebuilts/api/29.0/public/init.te b/prebuilts/api/29.0/public/init.te
index e7e5b6517..1ba495de3 100644
--- a/prebuilts/api/29.0/public/init.te
+++ b/prebuilts/api/29.0/public/init.te
@@ -123,6 +123,9 @@ allow init self:global_capability_class_set sys_time;
 
 allow init self:global_capability_class_set { sys_rawio mknod };
 
+# Set /proc/sys/kernel/yama/ptrace_scope
+allow init self:capability { sys_ptrace };
+
 # Mounting filesystems from block devices.
 allow init dev_type:blk_file r_file_perms;
 allowxperm init dev_type:blk_file ioctl BLKROSET;
diff --git a/private/domain.te b/private/domain.te
index 1d26761d6..62cbb04a1 100644
--- a/private/domain.te
+++ b/private/domain.te
@@ -86,6 +86,7 @@ userdebug_or_eng(`
 # with other UIDs to these whitelisted domains.
 neverallow {
   domain
+  -init
   -vold
   userdebug_or_eng(`-llkd')
   -dumpstate
diff --git a/private/genfs_contexts b/private/genfs_contexts
index e72803627..27828d91b 100644
--- a/private/genfs_contexts
+++ b/private/genfs_contexts
@@ -71,6 +71,7 @@ genfscon proc /sys/kernel/sched_tunable_scaling u:object_r:proc_sched:s0
 genfscon proc /sys/kernel/sched_wakeup_granularity_ns u:object_r:proc_sched:s0
 genfscon proc /sys/kernel/sysrq u:object_r:proc_sysrq:s0
 genfscon proc /sys/kernel/usermodehelper u:object_r:usermodehelper:s0
+genfscon proc /sys/kernel/yama/ptrace_scope u:object_r:proc_security:s0
 genfscon proc /sys/net u:object_r:proc_net:s0
 genfscon proc /sys/vm/dirty_background_ratio u:object_r:proc_dirty:s0
 genfscon proc /sys/vm/dirty_expire_centisecs u:object_r:proc_dirty:s0
diff --git a/public/init.te b/public/init.te
index e7e5b6517..1ba495de3 100644
--- a/public/init.te
+++ b/public/init.te
@@ -123,6 +123,9 @@ allow init self:global_capability_class_set sys_time;
 
 allow init self:global_capability_class_set { sys_rawio mknod };
 
+# Set /proc/sys/kernel/yama/ptrace_scope
+allow init self:capability { sys_ptrace };
+
 # Mounting filesystems from block devices.
 allow init dev_type:blk_file r_file_perms;
 allowxperm init dev_type:blk_file ioctl BLKROSET;