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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/common/sandbox_linux/bpf_renderer_policy_linux.h" | 5 #include "content/common/sandbox_linux/bpf_renderer_policy_linux.h" |
6 | 6 |
7 #include <errno.h> | 7 #include <errno.h> |
8 #include <sys/ioctl.h> | |
8 | 9 |
9 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
10 #include "build/build_config.h" | 11 #include "build/build_config.h" |
11 #include "content/common/sandbox_linux/sandbox_linux.h" | 12 #include "content/common/sandbox_linux/sandbox_linux.h" |
12 #include "sandbox/linux/bpf_dsl/bpf_dsl.h" | 13 #include "sandbox/linux/bpf_dsl/bpf_dsl.h" |
14 #include "sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.h" | |
13 #include "sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.h" | 15 #include "sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.h" |
14 #include "sandbox/linux/seccomp-bpf-helpers/syscall_sets.h" | 16 #include "sandbox/linux/seccomp-bpf-helpers/syscall_sets.h" |
15 #include "sandbox/linux/system_headers/linux_syscalls.h" | 17 #include "sandbox/linux/system_headers/linux_syscalls.h" |
16 | 18 |
19 #if defined(USE_VGEM_MAP) | |
20 #include <libdrm/vgem_drm.h> | |
21 #endif | |
22 | |
17 using sandbox::SyscallSets; | 23 using sandbox::SyscallSets; |
18 using sandbox::bpf_dsl::Allow; | 24 using sandbox::bpf_dsl::Allow; |
25 using sandbox::bpf_dsl::Arg; | |
19 using sandbox::bpf_dsl::Error; | 26 using sandbox::bpf_dsl::Error; |
20 using sandbox::bpf_dsl::ResultExpr; | 27 using sandbox::bpf_dsl::ResultExpr; |
21 | 28 |
22 namespace content { | 29 namespace content { |
23 | 30 |
31 namespace { | |
brettw
2015/08/26 22:27:49
Blank line after here.
dshwang
2015/08/27 12:47:09
Done.
| |
32 ResultExpr RestrictIoctl() { | |
33 #if defined(USE_VGEM_MAP) | |
34 // The type of DRM_IOCTL_XXX macro is long unsigned int. | |
35 auto reference_type = DRM_IOCTL_GEM_CLOSE; | |
36 #else | |
37 auto reference_type = TCGETS; | |
38 #endif | |
39 const Arg<decltype(reference_type)> request(1); | |
40 return Switch(request) | |
41 .SANDBOX_BPF_DSL_CASES( | |
42 (static_cast<decltype(reference_type)>(TCGETS), FIONREAD), Allow()) | |
43 #if defined(USE_VGEM_MAP) | |
44 .SANDBOX_BPF_DSL_CASES((DRM_IOCTL_GEM_CLOSE, DRM_IOCTL_VGEM_MODE_MAP_DUMB, | |
45 DRM_IOCTL_PRIME_FD_TO_HANDLE), | |
46 Allow()) | |
47 #endif | |
48 .Default(sandbox::CrashSIGSYSIoctl()); | |
49 } | |
50 } | |
brettw
2015/08/26 22:27:49
Blank line before here, and this line should look
dshwang
2015/08/27 12:47:09
Done.
| |
51 | |
24 RendererProcessPolicy::RendererProcessPolicy() {} | 52 RendererProcessPolicy::RendererProcessPolicy() {} |
25 RendererProcessPolicy::~RendererProcessPolicy() {} | 53 RendererProcessPolicy::~RendererProcessPolicy() {} |
26 | 54 |
27 ResultExpr RendererProcessPolicy::EvaluateSyscall(int sysno) const { | 55 ResultExpr RendererProcessPolicy::EvaluateSyscall(int sysno) const { |
28 switch (sysno) { | 56 switch (sysno) { |
29 // The baseline policy allows __NR_clock_gettime. Allow | 57 // The baseline policy allows __NR_clock_gettime. Allow |
30 // clock_getres() for V8. crbug.com/329053. | 58 // clock_getres() for V8. crbug.com/329053. |
31 case __NR_clock_getres: | 59 case __NR_clock_getres: |
32 return sandbox::RestrictClockID(); | 60 return sandbox::RestrictClockID(); |
33 case __NR_ioctl: | 61 case __NR_ioctl: |
34 return sandbox::RestrictIoctl(); | 62 return RestrictIoctl(); |
35 // Allow the system calls below. | 63 // Allow the system calls below. |
36 case __NR_fdatasync: | 64 case __NR_fdatasync: |
37 case __NR_fsync: | 65 case __NR_fsync: |
38 #if defined(__i386__) || defined(__x86_64__) || defined(__mips__) | 66 #if defined(__i386__) || defined(__x86_64__) || defined(__mips__) |
39 case __NR_getrlimit: | 67 case __NR_getrlimit: |
40 #endif | 68 #endif |
41 #if defined(__i386__) || defined(__arm__) | 69 #if defined(__i386__) || defined(__arm__) |
42 case __NR_ugetrlimit: | 70 case __NR_ugetrlimit: |
43 #endif | 71 #endif |
44 case __NR_mremap: // See crbug.com/149834. | 72 case __NR_mremap: // See crbug.com/149834. |
(...skipping 12 matching lines...) Expand all Loading... | |
57 return sandbox::RestrictSchedTarget(GetPolicyPid(), sysno); | 85 return sandbox::RestrictSchedTarget(GetPolicyPid(), sysno); |
58 case __NR_prlimit64: | 86 case __NR_prlimit64: |
59 return Error(EPERM); // See crbug.com/160157. | 87 return Error(EPERM); // See crbug.com/160157. |
60 default: | 88 default: |
61 // Default on the content baseline policy. | 89 // Default on the content baseline policy. |
62 return SandboxBPFBasePolicy::EvaluateSyscall(sysno); | 90 return SandboxBPFBasePolicy::EvaluateSyscall(sysno); |
63 } | 91 } |
64 } | 92 } |
65 | 93 |
66 } // namespace content | 94 } // namespace content |
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