1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
diff --git a/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc b/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
index 5f81dff..85b7ea0 100644
--- a/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
+++ b/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
@@ -129,23 +129,13 @@ namespace sandbox {
// CLONE_VM, nor CLONE_THREAD, which includes all fork() implementations.
ResultExpr RestrictCloneToThreadsAndEPERMFork() {
const Arg<unsigned long> flags(0);
+ const int required = CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND |
+ CLONE_THREAD | CLONE_SYSVSEM;
+ const int safe = CLONE_SETTLS | CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID |
+ CLONE_DETACHED;
+ const BoolExpr thread_clone_ok = (flags&~safe)==required;
- // TODO(mdempsky): Extend DSL to support (flags & ~mask1) == mask2.
- const uint64_t kAndroidCloneMask = CLONE_VM | CLONE_FS | CLONE_FILES |
- CLONE_SIGHAND | CLONE_THREAD |
- CLONE_SYSVSEM;
- const uint64_t kObsoleteAndroidCloneMask = kAndroidCloneMask | CLONE_DETACHED;
-
- const uint64_t kGlibcPthreadFlags =
- CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_THREAD |
- CLONE_SYSVSEM | CLONE_SETTLS | CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID;
- const BoolExpr glibc_test = flags == kGlibcPthreadFlags;
-
- const BoolExpr android_test =
- AnyOf(flags == kAndroidCloneMask, flags == kObsoleteAndroidCloneMask,
- flags == kGlibcPthreadFlags);
-
- return If(IsAndroid() ? android_test : glibc_test, Allow())
+ return If(thread_clone_ok, Allow())
.ElseIf((flags & (CLONE_VM | CLONE_THREAD)) == 0, Error(EPERM))
.Else(CrashSIGSYSClone());
}
diff --git a/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc b/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
index 1d9f95c..21fbe21 100644
--- a/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
+++ b/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
@@ -373,6 +373,7 @@ bool SyscallSets::IsAllowedProcessStartOrDeath(int sysno) {
#if defined(__i386__)
case __NR_waitpid:
#endif
+ case __NR_set_tid_address:
return true;
case __NR_clone: // Should be parameter-restricted.
case __NR_setns: // Privileged.
@@ -385,7 +386,6 @@ bool SyscallSets::IsAllowedProcessStartOrDeath(int sysno) {
#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
case __NR_set_thread_area:
#endif
- case __NR_set_tid_address:
case __NR_unshare:
#if !defined(__mips__) && !defined(__aarch64__)
case __NR_vfork:
@@ -492,6 +492,7 @@ bool SyscallSets::IsAllowedAddressSpaceAccess(int sysno) {
case __NR_mlock:
case __NR_munlock:
case __NR_munmap:
+ case __NR_mremap:
return true;
case __NR_madvise:
case __NR_mincore:
@@ -507,7 +508,6 @@ bool SyscallSets::IsAllowedAddressSpaceAccess(int sysno) {
case __NR_modify_ldt:
#endif
case __NR_mprotect:
- case __NR_mremap:
case __NR_msync:
case __NR_munlockall:
case __NR_readahead:
|
GitWeb
