2019-12-02 18:28:28 +00:00
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# Copyright 2019 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# Rules from common_device.policy with some rules removed because they block certain flags needed
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# for gpu.
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brk: 1
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clone: arg0 & CLONE_THREAD
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close: 1
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dup3: 1
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dup: 1
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epoll_create1: 1
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epoll_ctl: 1
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seccomp: update/cleanup aarch64 rules
The build-time seccomp compiler for aarch64 complains that it doesn't
recognize open, epoll_wait, recv, mmap2, dup2, poll, mkdir, or stat.
I tried to propose a change to upstream minijail to make it aware of
these syscalls, but the calls are in various forms of deprecation
so upstream is doubting the sanity of the policy files.
I applied the following mapping: open->openat, epoll_wait->epoll_pwait,
recv->recvfrom, mmap2->mmap, dup2->dup3, poll->ppoll, mkdir->mkdirat,
and stat->statx. In many cases the new syscall was already present so I
just deleted the old one.
BUG=None
TEST=Ran compile_seccomp_policy.py with an unmodified minijail until
it stopped complaining. I don't have an arm device for runtime testing.
Wrote an app to emulate the execution of the first 400 syscall #s though
the bpf filter and verified that the list that matches the filter is the
same as the policy file.
Change-Id: I599aa549a1712b898eb6b73492872a9676e7215d
Signed-off-by: Matt Delco <delco@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2036218
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
2020-02-04 01:26:44 +00:00
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epoll_pwait: 1
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2019-12-02 18:28:28 +00:00
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eventfd2: 1
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exit: 1
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exit_group: 1
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futex: 1
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getpid: 1
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gettimeofday: 1
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kill: 1
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madvise: arg2 == MADV_DONTNEED || arg2 == MADV_DONTDUMP || arg2 == MADV_REMOVE
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mremap: 1
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munmap: 1
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nanosleep: 1
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pipe2: 1
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ppoll: 1
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2020-06-24 04:01:28 +00:00
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prctl: arg0 == PR_SET_NAME || arg0 == PR_GET_NAME
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2019-12-02 18:28:28 +00:00
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read: 1
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readv: 1
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recvfrom: 1
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recvmsg: 1
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restart_syscall: 1
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rt_sigaction: 1
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rt_sigprocmask: 1
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rt_sigreturn: 1
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sched_getaffinity: 1
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sendmsg: 1
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sendto: 1
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set_robust_list: 1
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sigaltstack: 1
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write: 1
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writev: 1
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2020-12-03 19:37:33 +00:00
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# Required for perfetto tracing
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getsockopt: 1
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shutdown: 1
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2019-12-02 18:28:28 +00:00
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## Rules specific to gpu
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connect: 1
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getrandom: 1
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socket: arg0 == 1 && arg1 == 0x80001 && arg2 == 0
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lseek: 1
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ftruncate: 1
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statx: 1
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fstat: 1
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seccomp: update/cleanup aarch64 rules
The build-time seccomp compiler for aarch64 complains that it doesn't
recognize open, epoll_wait, recv, mmap2, dup2, poll, mkdir, or stat.
I tried to propose a change to upstream minijail to make it aware of
these syscalls, but the calls are in various forms of deprecation
so upstream is doubting the sanity of the policy files.
I applied the following mapping: open->openat, epoll_wait->epoll_pwait,
recv->recvfrom, mmap2->mmap, dup2->dup3, poll->ppoll, mkdir->mkdirat,
and stat->statx. In many cases the new syscall was already present so I
just deleted the old one.
BUG=None
TEST=Ran compile_seccomp_policy.py with an unmodified minijail until
it stopped complaining. I don't have an arm device for runtime testing.
Wrote an app to emulate the execution of the first 400 syscall #s though
the bpf filter and verified that the list that matches the filter is the
same as the policy file.
Change-Id: I599aa549a1712b898eb6b73492872a9676e7215d
Signed-off-by: Matt Delco <delco@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2036218
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
2020-02-04 01:26:44 +00:00
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newfstatat: 1
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2019-12-02 18:28:28 +00:00
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getdents64: 1
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2020-04-21 09:45:22 +00:00
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sysinfo: 1
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2019-12-02 18:28:28 +00:00
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# 0x6400 == DRM_IOCTL_BASE, 0x8000 = KBASE_IOCTL_TYPE (mali)
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ioctl: arg1 & 0x6400 || arg1 & 0x8000
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2020-02-01 01:29:45 +00:00
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## mmap/mprotect differ from the common_device.policy
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2019-12-02 18:28:28 +00:00
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mmap: arg2 == PROT_READ|PROT_WRITE || arg2 == PROT_NONE || arg2 == PROT_READ|PROT_EXEC || arg2 == PROT_WRITE || arg2 == PROT_READ
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mprotect: arg2 == PROT_READ|PROT_WRITE || arg2 == PROT_NONE || arg2 == PROT_READ
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openat: 1
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## Rules specific to pvr
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geteuid: 1
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getuid: 1
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readlinkat: 1
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gettid: 1
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fcntl: 1
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tgkill: 1
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clock_gettime: 1
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