When installd clears cached files on external storage, the sdcardfs
kernel filesystem needs to be kept in the loop to release any cached
dentries that it's holding onto.  (Otherwise the underlying disk
space isn't actually released.)

installd can already delete the underlying files directly (via the
media_rw_data_file rules), so this technically isn't expanding its
capabilities.

avc: granted { search } for name="/" dev="tmpfs" ino=6897 scontext=u:r:installd:s0 tcontext=u:object_r:tmpfs:s0 tclass=dir
avc: denied { open } for path="/mnt/runtime/default/emulated/0/Android/data" dev="sdcardfs" ino=589830 scontext=u:r:installd:s0 tcontext=u:object_r:sdcardfs:s0 tclass=dir permissive=1
avc: denied { write } for name="com.google.android.inputmethod.japanese" dev="sdcardfs" ino=590040 scontext=u:r:installd:s0 tcontext=u:object_r:sdcardfs:s0 tclass=dir permissive=0
avc: denied { remove_name } for name="cache_r.m" dev="sdcardfs" ino=589868 scontext=u:r:installd:s0 tcontext=u:object_r:sdcardfs:s0 tclass=dir permissive=0
avc: denied { getattr } for path="/mnt/runtime/default/emulated/0/Android/data/.nomedia" dev="sdcardfs" ino=589831 scontext=u:r:installd:s0 tcontext=u:object_r:sdcardfs:s0 tclass=file permissive=1

Test: cts-tradefed run commandAndExit cts-dev -m CtsAppSecurityHostTestCases -t android.appsecurity.cts.StorageHostTest
Bug: 37486230
Change-Id: Icfd00a9ba379b1f50c48fe85849304cf9859bcb2
(cherry picked from commit 72f4c619)

Logs show that only dumpstate requires access.

avc: granted { read open } for comm="screencap" path="/dev/ion"
dev="tmpfs" ino=14324 scontext=u:r:dumpstate:s0
tcontext=u:object_r:ion_device:s0 tclass=chr_file
avc: granted { ioctl } for comm="screencap" path="/dev/ion" dev="tmpfs"
ino=14324 ioctlcmd=4906 scontext=u:r:dumpstate:s0
tcontext=u:object_r:ion_device:s0 tclass=chr_file

Grant ion permission to dumpstate which uses it for screencap
feature.

Bug: 28760354
Test: build. Check logs.
Change-Id: I6435b7dbf7656669dac5dcfb205cf0aeda93991b

Logs indicate no usage of these permissions.

Bug: 28760354
Test: check logs.
Change-Id: I3d75aea6afd4e326f705274ab2790e5d0bbdb367

Logs indicate apps, system_server, and runas are the only
domains that require this permission.

Bug: 28760354
Test: check logs.
Change-Id: I93dc53ec2d892bb91c0cd6f5d7e9cbf76b9bcd9f

Bug: 62706738
Bug: 34133340
Test: Check that uid_time_in_state can't be read from
the shell without root permissions and that
"dumpsys batterystats --checkin| grep ctf" shows frequency
data (system_server was able to read uid_time_in_state)

Change-Id: Ic6a54da4ebcc9e10b0e3af8f14a45d7408e8686e
(cherry picked from commit 4dc88795)

A legitimate call to access(2) is generating a denial. Use the
audit_access permission to suppress the denial on just the access()
call.

avc: denied { write } for name="verified_jars"
scontext=u:r:dexoptanalyzer:s0
tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir

Bug: 62597207
Test: build policy
Test: The following cmd succeeds but no longer generates a denial
    adb shell cmd package compile -r bg-dexopt --secondary-dex \
    com.google.android.googlequicksearchbox

Change-Id: I7d03df2754c24c039bce11426bf8f317232f5e5f
(cherry picked from commit 575e6270)

Linux kernel commit da69a5306ab9 ("selinux: support distinctions among all
network address families") triggers a build error if a new address family
is added without defining a corresponding SELinux security class.  As a
result, the smc_socket class was added to the kernel to resolve a build
failure as part of merge commit 3051bf36c25d that introduced AF_SMC circa
Linux 4.11.  Define this security class and its access vector, add
it to the socket_class_set macro, and exclude it from webview_zygote
like other socket classes.

Test:  Policy builds

Change-Id: Idbb8139bb09c6d1c47f1a76bd10f4ce1e9d939cb
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

This adds parellel rules to the ones added for media_rw_data_file
to allow apps to access vfat under sdcardfs. This should be reverted
if sdcardfs is modified to alter the secontext it used for access to
the lower filesystem

Change-Id: Idb123206ed2fac3ead88b0c1ed0b66952597ac65
Bug: 62584229
Test: Run android.appsecurity.cts.ExternalStorageHostTest with
      an external card formated as vfat
Signed-off-by: Daniel Rosenberg <drosen@google.com>

run-as uses file descriptor created by adbd when running
`adb shell -t run-as xxx`. It produces audit warnings like below:

[ 2036.555371] c1    509 type=1400 audit(1497910817.864:238): avc: granted { use } for pid=4945 comm="run-as" path="/dev/pts/0" dev="devpts" ino=3 scontext=u:r:runas:s0 tcontext=u:r:adbd:s0 tclass=fd

Bug: http://b/62358246
Test: test manually that the warning disappears.
Change-Id: I19023ac876e03ce2afe18982fe753b07e4c876bb

In libprocessgroup, we want to only send signals once to processes,
particularly for SIGTERM.  We must send the signal both to all
processes within a POSIX process group and a cgroup.  To ensure that
we do not duplicate the signals being sent, we check the processes in
the cgroup to see if they're in the POSIX process groups that we're
killing.  If they are, we skip sending a second signal.  This requires
getpgid permissions, hence this SELinux change.

avc: denied { getpgid } for pid=797 comm="ActivityManager" scontext=u:r:system_server:s0 tcontext=u:r:untrusted_app_25:s0:c512,c768 tclass=process permissive=1
avc: denied { getpgid } for pid=797 comm="ActivityManager" scontext=u:r:system_server:s0 tcontext=u:r:untrusted_app_25:s0:c512,c768 tclass=process permissive=1
avc: denied { getpgid } for pid=797 comm="ActivityManager" scontext=u:r:system_server:s0 tcontext=u:r:system_app:s0 tclass=process permissive=1
avc: denied { getpgid } for pid=797 comm="ActivityManager" scontext=u:r:system_server:s0 tcontext=u:r:system_app:s0 tclass=process permissive=1
avc: denied { getpgid } for pid=1 comm="init" scontext=u:r:init:s0 tcontext=u:r:zygote:s0 tclass=process permissive=1
avc: denied { getpgid } for pid=1 comm="init" scontext=u:r:init:s0 tcontext=u:r:zygote:s0 tclass=process permissive=1
avc: denied { getpgid } for pid=1 comm="init" scontext=u:r:init:s0 tcontext=u:r:system_server:s0 tclass=process permissive=1
avc: denied { getpgid } for pid=1 comm="init" scontext=u:r:init:s0 tcontext=u:r:system_server:s0 tclass=process permissive=1

Bug: 37853905
Bug: 62418791
Test: Boot, kill zygote, reboot
Change-Id: Ib6c265dbaac8833c47145ae28fb6594ca8545570

Add sepolicy to hal_wifi to access /proc/modules
to check if Wi-Fi driver is loaded.

Bug: 62013623
Change-Id: Ib700170095b183a1e0e6a36b64e7c65655174f21

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

First submit caused a merge conflict. This revision replaces netd_prop
with a more unique name netd_stable_secret_prop.

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: I0a609c724799a15b1926e62534c16810d34f2275

This broke the build on master. See b/17613910#comment17
for details.

This reverts commit ef1fd98b.

Change-Id: I11f7d463061a9b6340c11827135586266e26f016

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 is to Allow commands like `adb shell run-as ...`.

Bug: http://b/62358246
Test: run commands manually.
Change-Id: I7bb6c79a6e27ff1224a80c6ddeffb7f27f492bb2

It appears that selinux requires the write permission to receive
a writable pipe from dumpstate, for unclear reasons. Add the permission
for now.

Bug: http://b/62297059
Test: dumpstate
Change-Id: I0f25682177115aacd5c2203ddc0008228b0380ad

Owners are selected from top CL approvals or owners.
They will be suggested to review/approve future CLs.

Test: build/make/tools/checkowners.py -c -v OWNERS
Change-Id: I3d7f4c06209c22dea0d824429d68997f7179985f

Bug: http://b/62297059
Test: mma
Change-Id: Ibcd93e5554a9c2dd75fbfb42294fbc9b96ebc8cc

Add policy changes to enable a new service. The service
is currently switched off in config, but this change is
needed before it could be enabled.

Bug: 31008728
Test: make droid
Merged-In: I29c4509304978afb2187fe2e7f401144c6c3b4c6
Change-Id: I29c4509304978afb2187fe2e7f401144c6c3b4c6

tombstoned allows dumpstate to install "intercepts" to java trace
requests for a given process. When an "intercept" is installed, all
trace output is redirected to a pipe provided by dumpstate instead
of the default location (usually in /data/anr or /data/tombstone).

Note that these processes are already granted "write" and "getattr"
on dumpstate:fifo_file in order to communicate with dumpstate; this
change adds "append" to the existing set of permissions.

Bug: 32064548
Test: manual
Change-Id: Iccbd78c59071252fef318589f3e55ece51a3c64c

Applications connect to tombstoned via a unix domain socket and request
an open FD to which they can write their traces. This socket has a new
label (tombstoned_java_trace_socket) and appdomain and system_server are
given permissions to connect and write to it.

Apps no longer need permissions to open files under /data/anr/ and
these permissions will be withdrawn in a future change.

Bug: 32064548
Test: Manual

Merged-In: I70a3e6e230268d12b454e849fa88418082269c4f
Change-Id: Ib4b73fc130f4993c44d96c8d68f61b6d9bb2c7d5

This reverts commit a015186f.

Bug: http://b/62101480
Change-Id: I8e889e3d50cf1749168acc526f8a8901717feb46

SELinux : avc:  denied  { find } for service=vrmanager pid=2364 uid=1027
scontext=u:r:nfc:s0 tcontext=u:object_r:vr_manager_service:s0
tclass=service_manager permissive=0

Test: manual
Bug: 35889571
Change-Id: If95bb5c286def99a0439b36a31b52fa9dfd4a2f4
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>

Fix the following denial:
    avc: denied { append } for pid=1093 comm="mediaextractor" path="pipe:[68438]" dev="pipefs" ino=68438 scontext=u:r:mediaextractor:s0 tcontext=u:r:dumpstate:s0 tclass=fifo_file permissive=1 ppid=1 pcomm="init" pgid=1 pgcomm="init"

Bug: http://b/38444258
Test: none
Change-Id: I58162e3a28b744a58396e77d6b0e2becb5633d6a

Test: manual
Bug: 37014702
Change-Id: Id43dc7a8506fe60015c2f82242ba45cf85d3e74b

This permission was added to the kernel in commit 791ec491c372
("prlimit,security,selinux: add a security hook for prlimit")
circa Linux 4.12 in order to control the ability to get the resource
limits of another process.  It is only checked when acting on another
process, so it is not required for getrlimit(2), only for prlimit(2)
on another process.

Test:  Policy builds

Change-Id: Ic0079a341e959f1c5a3d045974df4b756fd4ab67
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

Specify per-service rules for PDX transport. Now being able to
grant permissions to individual services provided by processes,
not all services of a process.

Also tighter control over which permissions are required for
client and server for individual components of IPC (endpoints,
channels, etc).

Bug: 37646189
Change-Id: I78eb8ae8b6e08105666445a66bfcbd2f1d69d0ea
Merged-Id: I78eb8ae8b6e08105666445a66bfcbd2f1d69d0ea

This reverts commit 8c60f74d.

Bug: 38242876
Change-Id: Iba5a94d16901dc0c52f1941972c26877baa4805c