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magisk: Better hiddens #166

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magisk: Better hiddens #166

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11251b8
magisk: Better hidden SELinux Permissive state
MlgmXyysd Mar 11, 2022
69efef4
magisk: Spoof residual items in kernel cmdline
MlgmXyysd Mar 11, 2022
2a3928b
magisk: Revert `ro.build.selinux` changes
MlgmXyysd Mar 13, 2022
1221325
magisk: Use chmod to reject cmdline reads
MlgmXyysd Mar 13, 2022
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16 changes: 13 additions & 3 deletions magisk/service.sh
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Original file line number Diff line number Diff line change
@@ -1,6 +1,8 @@
#!/system/bin/sh
# Conditional MagiskHide properties

MODDIR=${0%/*}

maybe_set_prop() {
local prop="$1"
local contains="$2"
Expand All @@ -20,12 +22,20 @@ maybe_set_prop vendor.boot.mode recovery unknown
maybe_set_prop ro.boot.hwc CN GLOBAL
maybe_set_prop ro.boot.hwcountry China GLOBAL

resetprop --delete ro.build.selinux
# Kernel cmdline
chmod 0640 /proc/cmdline

# SELinux permissive
resetprop --delete ro.build.selinux

if [[ "$(cat /sys/fs/selinux/enforce)" == "0" ]]; then
chmod 640 /sys/fs/selinux/enforce
chmod 440 /sys/fs/selinux/policy
echo "1" > "${MODDIR}/enforce"

chmod 0640 "${MODDIR}/enforce"
chmod 0640 /sys/fs/selinux/enforce
chmod 0440 /sys/fs/selinux/policy

mount -o bind "${MODDIR}/enforce /sys/fs/selinux/enforce"
fi

# Late props which must be set after boot_completed
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3 changes: 3 additions & 0 deletions magisk/system.prop
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Original file line number Diff line number Diff line change
Expand Up @@ -21,3 +21,6 @@ vendor.boot.vbmeta.device_state=locked
ro.build.type=user
ro.debuggable=0
ro.secure=1

# SELinux
ro.boot.selinux=enforcing