Bug: 264489957
Test: flash and no related avc error
Change-Id: Ia9a6d4918aa78e6b3e7df39496d786921192c8af
Signed-off-by: Wilson Sung <wilsonsung@google.com>
Brings in the io_uring class and associated restrictions and adds a new
macro, `io_uring_use`, to sepolicy.
In more detail, this change:
* Adds a new macro expands to ensure the domain it is passed can undergo a
type transition to a new type, `<domain>_iouring`, when the anon_inode
being accessed is labeled `[io_uring]`. It also allows the domain to
create, read, write, and map the io_uring anon_inode.
* Adds the ability for a domain to use the `IORING_SETUP_SQPOLL` flag
during `io_uring_setup` so that a syscall to `io_uring_enter` is not
required by the caller each time it wishes to submit IO. This can be
enabled securely as long as we don't enable sharing of io_uring file
descriptors across domains. The kernel polling thread created by `SQPOLL`
will inherit the credentials of the thread that created the io_uring [1].
* Removes the selinux policy that restricted all domains that make use of
the `userfault_fd` macro from any `anon_inode` created by another domain.
This is overly restrictive, as it prohibits the use of two different
`anon_inode` use cases in a single domain e.g. userfaultfd and io_uring.
This change also replaces existing sepolicy in fastbootd and snapuserd
that enabled the use of io_uring.
[1] https://patchwork.kernel.org/project/linux-security-module/patch/163159041500.470089.11310853524829799938.stgit@olly/
Bug: 253385258
Test: m selinux_policy
Test: cd external/liburing; mm; atest liburing_test; # requires WIP CL ag/20291423
Test: Manually deliver OTAs (built with m dist) to a recent Pixel device
and ensure snapuserd functions correctly (no io_uring failures)
Change-Id: I96f38760b3df64a1d33dcd6e5905445ccb125d3f
It is important that fastbootd is able to mount /metadata in recovery, in
order to check whether Virtual A/B snapshots are present. This is
enabled on userdebug builds, but currently fails on user builds.
Fixes:
audit: type=1400 audit(7258310.023:24): avc: denied { mount } for pid=511 comm="fastbootd" name="/" dev="sda15" ino=2 scontext=u:r:fastbootd:s0 tcontext=u:object_r:labeledfs:s0 tclass=filesystem permissive=0
Bug: 181097763
Test: fastboot flash on user build
Change-Id: I1abeeaa3109e08755a1ba44623a46b12d9bfdedc
This is needed to support VABC merges on data wipes and via "fastboot
snapshot-update merge".
Bug: 168258606
Test: fastboot snapshot-update merge
data wipe during VABC merge
Change-Id: I32770a2e74f2c2710e4964f65c42ae779c1a0b90
The IPv6 link-local address is used to avoid expose device to out of
network segment.
BUG: 155198345
Test: manual test.
Change-Id: I0ce8c12de9976c01e57a6433c7fb50235e907dc5
public/property split is landed to selectively export public types to
vendors. So rules happening within system should be in private. This
introduces private/property.te and moves all allow and neverallow rules
from any coredomains to system defiend properties.
Bug: 150331497
Test: system/sepolicy/tools/build_policies.sh
Change-Id: I0d929024ae9f4ae3830d4bf3d59e999febb22cbe
Merged-In: I0d929024ae9f4ae3830d4bf3d59e999febb22cbe
(cherry picked from commit 42c7d8966c)
Also allow adb and fastboot to talk to recovery
through recovery_socket. This enables changing
between modes with usb commands.
Test: No selinux denials
Bug: 78793464
Change-Id: I80c54d4eaf3b94a1fe26d2280af4e57cb1593790
Also allow adb and fastboot to talk to recovery
through recovery_socket. This enables changing
between modes with usb commands.
Test: No selinux denials
Bug: 78793464
Change-Id: I1f97659736429fe961319c642f458c80f199ffb4
