This is used to persist RFC 7217 stable secrets across device reboots.

Test: as follows
    - Manually tested that stable_secret is generated on first use and
      persists until reset of user data partition (factory reset).
    - Tested that "adb shell getprop" was denied access to
      persist.netd.stable_secret after running "adb unroot".
Bug: 17613910

Change-Id: I4dad00fb189d697aceaffae49ad63987c7e45054

This attribute is being actively removed from policy. Since
attributes are not being versioned, partners must not be able to
access and use this attribute. Move it from private and verify in
the logs that rild and tee are not using these permissions.

Bug: 38316109
Test: build and boot Marlin
Test: Verify that rild and tee are not being granted any of these
      permissions.
Change-Id: I31beeb5bdf3885195310b086c1af3432dc6a349b

Relabeling /vendor and /system/vendor to vendor_file removed
previously granted permissions. Restore these for non-treble devices.

Addresses:
avc: denied { execute_no_trans } for pid=2944 comm="dumpstate"
path="/system/vendor/bin/wpa_cli" dev="mmcblk0p10" ino=1929
scontext=u:r:dumpstate:s0 tcontext=u:object_r:vendor_file:s0
tclass=file

And potentially some other bugs that have yet to surface.

Bug: 37105075
Test: build Fugu
Change-Id: I8e7bd9c33819bf8206f7c110cbce72366afbcef8

Remove system_file:file { lock ioctl } from domain_deprecated. The only
domains triggering this were dex2oat and netd, which are fixed in this
change.

Addresses the following logspam similar to:

  avc: granted { lock } for comm="iptables"
  path="/system/etc/xtables.lock" dev="sda22" ino=3745
  scontext=u:r:netd:s0 tcontext=u:object_r:system_file:s0 tclass=file

  avc: granted { lock } for comm="dex2oat"
  path="/system/framework/arm/boot-okhttp.art" dev="dm-0" ino=1295
  scontext=u:r:dex2oat:s0 tcontext=u:object_r:system_file:s0 tclass=file

Test: device boots and no obvious problems.
Bug: 28760354
Bug: 36879751
Change-Id: Iac851c0e49a52ce4000fdfe16e68c17ff819693f

In order to perform XFRM operations NetD needs the
ability to both read and write Netlink XFRM messages.

Bug: 34811756
Test: 34812052

Change-Id: I26831c58b24a4c1f344b113f0b5cf47ed2c93fee
(cherry picked from commit 7eb3dd3b)

In order to perform XFRM operations NetD needs the
ability to both read and write Netlink XFRM messages.

Bug: 34811756
Test: 34812052

Change-Id: I26831c58b24a4c1f344b113f0b5cf47ed2c93fee

No SELinux domains can create dccp_socket instances, so it doesn't make
any sense to allow netd to minipulate already-open dccp sockets.

Bug: 35784697
Test: policy compiles.
Change-Id: I189844462cbab58ed58c24fbad6a392f6b035815

Introduce the add_service() macro which wraps up add/find
permissions for the source domain with a neverallow preventing
others from adding it. Only a particular domain should
add a particular service.

Use the add_service() macro to automatically add a neverallow
that prevents other domains from adding the service.

mediadrmserver was adding services labeled mediaserver_service.
Drop the add permission as it should just need the find
permission.

Additionally, the macro adds the { add find } permission which
causes some existing neverallow's to assert. Adjust those
neverallow's so "self" can always find.

Test: compile and run on hikey and emulator. No new denials were
found, and all services, where applicable, seem to be running OK.

Change-Id: Ibbd2a5304edd5f8b877bc86852b0694732be993c
Signed-off-by: William Roberts <william.c.roberts@intel.com>

Remove /proc/net access to domain_deprecated. Add it to domains where it
was missing before.

Other than these domains, SELinux denial monitoring hasn't picked up any
denials related to /proc/net

Bug: 28760354
Test: Device boots
Test: No unexpected denials in denial collection logs.
Change-Id: Ie5bfa4bc0070793c1e8bf3b00676fd31c08d426a

Divide policy into public and private components.  This is the first
step in splitting the policy creation for platform and non-platform
policies.  The policy in the public directory will be exported for use
in non-platform policy creation.  Backwards compatibility with it will
be achieved by converting the exported policy into attribute-based
policy when included as part of the non-platform policy and a mapping
file will be maintained to be included with the platform policy that
maps exported attributes of previous versions to the current platform
version.

Eventually we would like to create a clear interface between the
platform and non-platform device components so that the exported policy,
and the need for attributes is minimal.  For now, almost all types and
avrules are left in public.

Test: Tested by building policy and running on device.

Change-Id: Idef796c9ec169259787c3f9d8f423edf4ce27f8c

Change-Id: I4737a087f2d00e1028d1cb43d9eda814a008dbe8

This addresses error messages like:

11-30 18:00:15.196  6917  6917 W Binder:6596_2: type=1400 audit(0.0:46):
avc: denied { fowner } for capability=3 scontext=u:r:netd:s0
tcontext=u:r:netd:s0 tclass=capability permissive=0

11-30 18:00:15.200  6596  6917 E /system/bin/netd:
android::WriteStringToFile fchmod failed: Operation not permitted

11-30 18:00:15.200  6596  6917 E Netd    : failed to write to
/data/misc/net/rt_tables (Operation not permitted)

Bug: 31147892
Change-Id: Id11704f8e2b8c08db92de374ed44913b70d6ae66

Remove the ioctl permission for most socket types. For others, such as
tcp/udp/rawip/unix_dgram/unix_stream set a default unprivileged whitelist
that individual domains may extend (except where neverallowed like
untrusted_app). Enforce via a neverallowxperm rule.

Change-Id: I15548d830f8eff1fd4d64005c5769ca2be8d4ffe

Grant permissions observed.

Bug: 28760354
Change-Id: Ie63cda709319bbf635ef7bffbba3477c2cccc11b

This reverts commit 9c820a11.

Bug: 31364540
Change-Id: I98a34bd32dd835e6795d31a90f16f4ccd691e6e5

This reverts commit c71c6622.

Bug: 31364540
Change-Id: I3f4f132d4769e3cbc9d03ff908104a69f05bd2ef

Bug: 30041228
Test: WiFi tethering, client mode continues to function

Change-Id: I95a583ad4d57642f4731e415abb77732df5289ac
(cherry picked from commit fb5b13ee)

Grant permissions observed.

(cherry picked from commit 9c820a11)

Merged-in: Ifdead51f873eb587556309c48fb84ff1542ae303
Bug: 28760354
Change-Id: Ifdead51f873eb587556309c48fb84ff1542ae303

While here, remove a lot of extra permissions that we apparently
had because hostapd was inheriting fds from netd.

Bug: 30041118
Test: netd can request init to start/stop hostapd without denials.

Change-Id: Ia777497443a4226a201030eccb9dfc5a40f015dd
(cherry picked from commit 8a6c5f85)

avc: denied { write } for name="fwpath" dev="sysfs" ino=6863
scontext=u:r:wificond:s0 tcontext=u:object_r:sysfs_wlan_fwpath:s0
tclass=file permissive=0

Test: wificond and netd can write to this path, wifi works
Test: `runtest frameworks-wifi` passes

Bug: 29579539

Change-Id: Ia21c654b00b09b9fe3e50d564b82966c9c8e6994
(cherry picked from commit 7d13dd80)

Bug: 30041228
Test: WiFi tethering, client mode continues to function

Change-Id: I95a583ad4d57642f4731e415abb77732df5289ac

While here, remove a lot of extra permissions that we apparently
had because hostapd was inheriting fds from netd.

Bug: 30041118
Test: netd can request init to start/stop hostapd without denials.

Change-Id: Ia777497443a4226a201030eccb9dfc5a40f015dd

avc: denied { write } for name="fwpath" dev="sysfs" ino=6863
scontext=u:r:wificond:s0 tcontext=u:object_r:sysfs_wlan_fwpath:s0
tclass=file permissive=0

Test: wificond and netd can write to this path, wifi works
Test: `runtest frameworks-wifi` passes

Bug: 29579539

Change-Id: Ia21c654b00b09b9fe3e50d564b82966c9c8e6994

Remove the ioctl permission for most socket types. For others, such as
tcp/udp/rawip/unix_dgram/unix_stream set a default unprivileged whitelist
that individual domains may extend (except where neverallowed like
untrusted_app). Enforce via a neverallowxperm rule.

Change-Id: I15548d830f8eff1fd4d64005c5769ca2be8d4ffe

Commit: b144ebab added the sysfs_usb
type and granted the read perms globally, but did not add write
permissions for all domains that previously had them.  Add the ability
to write to sysfs_usb for all domains that had the ability to write to
those files previously (sysfs).

Address denials such as:
type=1400 audit(1904.070:4): avc:  denied  { write } for  pid=321 comm="ueventd" name="uevent" dev="sysfs" ino=1742 scontext=u:r:ueventd:s0 tcontext=u:object_r:sysfs_usb:s0 tclass=file permissive=0

Bug: 28417852
Change-Id: I4562ea73f2158ebefba74b58ca572f2176d1b849

Grant permissions observed.

Bug: 28760354
Change-Id: Ifdead51f873eb587556309c48fb84ff1542ae303

Bug: 28251026
Change-Id: I73dce178b873d45e703896f12c10325af2ade81d

1. Allow the system server to create the dns_listener service.
2. Allow netd to use said service.

Change-Id: Ic6394d7b2bdebf1c4d6cf70a79754a4996e943e2

Define new netlink socket security classes introduced by upstream kernel commit
6c6d2e9bde1c1c87a7ead806f8f5e2181d41a652 ("selinux: update netlink socket
classes").  This was merged in Linux 4.2 and is therefore only required
for Android kernels based on 4.2 or newer (e.g. the android-4.4 branch
of the kernel/common tree).

Add the new socket classes to socket_class_set.
Add an initial set of allow rules although further refinement
will likely be necessary.  Any allow rule previously written
on :netlink_socket may need to be rewritten or duplicated for
one or more of the more specific classes.  For now, we retain
the existing :netlink_socket rules for compatibility on older kernels.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

(cherry picked from commit 01d95c23)

Change-Id: Ic00a0d474730cda91ba3bc387e0cc14482f82114

Define new netlink socket security classes introduced by upstream kernel commit
6c6d2e9bde1c1c87a7ead806f8f5e2181d41a652 ("selinux: update netlink socket
classes").  This was merged in Linux 4.2 and is therefore only required
for Android kernels based on 4.2 or newer (e.g. the android-4.4 branch
of the kernel/common tree).

Add the new socket classes to socket_class_set.
Add an initial set of allow rules although further refinement
will likely be necessary.  Any allow rule previously written
on :netlink_socket may need to be rewritten or duplicated for
one or more of the more specific classes.  For now, we retain
the existing :netlink_socket rules for compatibility on older kernels.

Change-Id: I5040b30edd2d374538490a080feda96dd4bae5bf
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

Bug: 27239233
Change-Id: I82e3451542f08de67ad950223be90e37a2d3e899

This reverts commit b5594c27.

Bug: 27239233
Change-Id: I407a2f3a313f3de801080f9bae46f6bac1a803c2

This reverts commit 54457959.

Change-Id: Idfa0254e66f9517cc26af3c37441b47cbb984bca

neverallow access to other domains.

Bug: 27239233
Change-Id: I503d1be7308d0229db1cbe52cd511f7f40afa987

Requires net_raw and net_bind_service.

Bug: 26991160
Change-Id: I4cdd23f0d0c94c9b5126c821464aadc67cdb90c9

This will allow us to provide a better interface between Java
services (e.g., ConnectivityService) and netd than the current
FrameworkListener / NativeDaemonConnector interface which uses
text strings over a Unix socket.

Bug: 27239233
Change-Id: If40582ae2820e54f1960556b7bf7e88d98c525af

This is needed to kill sockets using the new SOCK_DESTROY
operation instead of using SIOCKILLADDR.

Bug: 26976388

(cherry picked from commit b38e2790)

Change-Id: Id80c6278f19f9fd20fe8d4fca72f84bff9249ed8

This is needed to kill sockets using the new SOCK_DESTROY
operation instead of using SIOCKILLADDR.

Bug: 26976388
Change-Id: I01a63a754726a0e9fb68be48b76df4dc47752edb

no SELinux denials from auditallow

Change-Id: Ied61f7f97b148b1c10d0f71e9ab30c136a123738

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