Non-SFI mode: Build nacl_helper_nonsfi_unittests

components/nacl/loader/nonsfi/nonsfi_sandbox_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Sanitizers internally use some syscalls which non-SFI NaCl disallows.
 #if !defined(ADDRESS_SANITIZER) && !defined(THREAD_SANITIZER) && \
     !defined(MEMORY_SANITIZER) && !defined(LEAK_SANITIZER)
 
 #include "components/nacl/loader/nonsfi/nonsfi_sandbox.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <linux/net.h>
 #include <pthread.h>
 #include <sched.h>
 #include <signal.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/mman.h>
 #include <sys/prctl.h>
 #include <sys/socket.h>
 #include <sys/syscall.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <time.h>
 #include <unistd.h>
 
+#include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/files/scoped_file.h"
 #include "base/logging.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/sys_info.h"
 #include "base/threading/thread.h"
 #include "base/time/time.h"
 #include "sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.h"
 #include "sandbox/linux/seccomp-bpf/bpf_tests.h"
 #include "sandbox/linux/seccomp-bpf/sandbox_bpf.h"
 #include "sandbox/linux/seccomp-bpf/syscall.h"
 #include "sandbox/linux/system_headers/linux_futex.h"
 #include "sandbox/linux/system_headers/linux_signal.h"
 #include "sandbox/linux/system_headers/linux_syscalls.h"
 
+// These defines are for PNaCl toolchain build.
+#if !defined(F_DUPFD_CLOEXEC)
+#define F_DUPFD_CLOEXEC 1030
+#endif
+
+#if !defined(MAP_POPULATE)
+#define MAP_POPULATE 0x8000
+#endif
+
+#if !defined(PROT_GROWSDOWN)
+#define PROT_GROWSDOWN 0x01000000
+#endif
+
+#if !defined(CLOCK_MONOTONIC_RAW)
+#define CLOCK_MONOTONIC_RAW 4
+#endif
+
+#if !defined(AF_INET)
+#define AF_INET 2
+#endif
+
+#if defined(__i386__)
+
+#if !defined(SYS_SOCKET)
+#define SYS_SOCKET 1
+#endif
+
+#if !defined(SYS_BIND)
+#define SYS_BIND 2
+#endif
+
+#if !defined(SYS_CONNECT)
+#define SYS_CONNECT 3
+#endif
+
+#if !defined(SYS_LISTEN)
+#define SYS_LISTEN 4
+#endif
+
+#if !defined(SYS_ACCEPT)
+#define SYS_ACCEPT 5
+#endif
+
+#if !defined(SYS_GETSOCKNAME)
+#define SYS_GETSOCKNAME 6
+#endif
+
+#if !defined(SYS_GETPEERNAME)
+#define SYS_GETPEERNAME 7
+#endif
+
+#if !defined(SYS_SETSOCKOPT)
+#define SYS_SETSOCKOPT 14
+#endif
+
+#if !defined(SYS_GETSOCKOPT)
+#define SYS_GETSOCKOPT 15
+#endif
+
+#endif // defined(__i386__)
+
 namespace {
 
 void DoPipe(base::ScopedFD* fds) {
   int tmp_fds[2];
   BPF_ASSERT_EQ(0, pipe(tmp_fds));
   fds[0].reset(tmp_fds[0]);
   fds[1].reset(tmp_fds[1]);
 }
 
 void DoSocketpair(base::ScopedFD* fds) {
@@ skipping 306 matching lines @@
 
 BPF_DEATH_TEST_C(NaClNonSfiSandboxTest,
                  fcntl_GETFL_SETFL,
                  DEATH_SEGV_MESSAGE(sandbox::GetErrorMessageContentForTests()),
                  nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
   base::ScopedFD fds[2];
   DoSocketpair(fds);
   fcntl(fds[0].get(), F_SETFL, O_APPEND);
 }
 
+void DoFcntl(int fd, int cmd) {
+  // fcntl in PNaCl toolchain returns an error without calling actual system
+  // call for unknown |cmd|. So, instead, here we use syscall().
+#if defined(OS_NACL_NONSFI)
+  syscall(__NR_fcntl64, fd, cmd);
+#else
+  fcntl(fd, cmd);
+#endif
+}
+
 BPF_DEATH_TEST_C(NaClNonSfiSandboxTest,
                  fcntl_DUPFD,
                  DEATH_SEGV_MESSAGE(sandbox::GetErrorMessageContentForTests()),
                  nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
-  fcntl(0, F_DUPFD);
+  DoFcntl(0, F_DUPFD);
 }
 
 BPF_DEATH_TEST_C(NaClNonSfiSandboxTest,
                  fcntl_DUPFD_CLOEXEC,
                  DEATH_SEGV_MESSAGE(sandbox::GetErrorMessageContentForTests()),
                  nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
-  fcntl(0, F_DUPFD_CLOEXEC);
+  DoFcntl(0, F_DUPFD_CLOEXEC);
 }
 
 BPF_DEATH_TEST_C(NaClNonSfiSandboxTest,
                  FutexWithRequeuePriorityInheritence,
                  DEATH_SEGV_MESSAGE(
                      sandbox::GetFutexErrorMessageContentForTests()),
                  nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
   syscall(__NR_futex, NULL, FUTEX_CMP_REQUEUE_PI, 0, NULL, NULL, 0);
   _exit(1);
 }
 
 BPF_DEATH_TEST_C(NaClNonSfiSandboxTest,
                  FutexWithRequeuePriorityInheritencePrivate,
                  DEATH_SEGV_MESSAGE(
                      sandbox::GetFutexErrorMessageContentForTests()),
                  nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
   syscall(__NR_futex, NULL, FUTEX_CMP_REQUEUE_PI_PRIVATE, 0, NULL, NULL, 0);
   _exit(1);
 }
 
 BPF_TEST_C(NaClNonSfiSandboxTest,
            StartingAndJoiningThreadWorks,
            nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
+#if defined(OS_NACL_NONSFI)
+  // base::Thread internally uses LazyInstance, which registers a callback to
+  // AtExitManager. However, in PNaCl toolchain build, it is not instantiated
+  // by the test runner, unlike host toolchain build (nacl_loader_unittests).
+  // Hence, declare it here so that the LazyInstance will work properly.
+  base::AtExitManager at_exit;
+#endif
+
   base::Thread thread("sandbox_tests");
   BPF_ASSERT(thread.Start());
   // |thread|'s destructor will join the thread.
 }
 
 BPF_DEATH_TEST_C(NaClNonSfiSandboxTest,
                  FutexWithUnlockPIPrivate,
                  DEATH_SEGV_MESSAGE(
                      sandbox::GetFutexErrorMessageContentForTests()),
                  nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
   syscall(__NR_futex, NULL, FUTEX_UNLOCK_PI_PRIVATE, 0, NULL, NULL, 0);
   _exit(1);
 }
 
+void* DoMmap(int prot, int flags) {
+#if defined(OS_NACL_NONSFI)
+  // When PROT_EXEC is set, PNaCl toolchain's mmap() system call wrapper uses
+  // two system calls mmap2(2) and mprotect(2), so that we cannot test
+  // sandbox with the wrapper. Instead, here we use syscall().
+  return reinterpret_cast<void*>(
+      syscall(__NR_mmap2, NULL, getpagesize(), prot, flags, -1, 0));
+#else
+  return mmap(NULL, getpagesize(), prot, flags, -1, 0);
+#endif
+}
+
 void* DoAllowedAnonymousMmap() {
-  return mmap(NULL, getpagesize(), PROT_READ | PROT_WRITE,
-              MAP_ANONYMOUS | MAP_SHARED, -1, 0);
+  return DoMmap(PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_SHARED);
 }
 
 BPF_TEST_C(NaClNonSfiSandboxTest,
            mmap_allowed,
            nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
   void* ptr = DoAllowedAnonymousMmap();
   BPF_ASSERT_NE(MAP_FAILED, ptr);
   BPF_ASSERT_EQ(0, munmap(ptr, getpagesize()));
 }
 
 BPF_DEATH_TEST_C(NaClNonSfiSandboxTest,
                  mmap_unallowed_flag,
                  DEATH_SEGV_MESSAGE(sandbox::GetErrorMessageContentForTests()),
                  nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
-  mmap(NULL, getpagesize(), PROT_READ | PROT_WRITE,
-       MAP_ANONYMOUS | MAP_POPULATE, -1, 0);
+  DoMmap(PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_POPULATE);
 }
 
 BPF_DEATH_TEST_C(NaClNonSfiSandboxTest,
                  mmap_unallowed_prot,
                  DEATH_SEGV_MESSAGE(sandbox::GetErrorMessageContentForTests()),
                  nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
-  mmap(NULL, getpagesize(), PROT_READ | PROT_GROWSDOWN,
-       MAP_ANONYMOUS, -1, 0);
+  DoMmap(PROT_READ | PROT_GROWSDOWN, MAP_ANONYMOUS);
 }
 
 BPF_DEATH_TEST_C(NaClNonSfiSandboxTest,
                  mmap_exec,
                  DEATH_SEGV_MESSAGE(sandbox::GetErrorMessageContentForTests()),
                  nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
-  mmap(NULL, getpagesize(), PROT_EXEC, MAP_ANONYMOUS, -1, 0);
+  DoMmap(PROT_EXEC, MAP_ANONYMOUS);
 }
 
 BPF_DEATH_TEST_C(NaClNonSfiSandboxTest,
                  mmap_read_exec,
                  DEATH_SEGV_MESSAGE(sandbox::GetErrorMessageContentForTests()),
                  nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
-  mmap(NULL, getpagesize(), PROT_READ | PROT_EXEC, MAP_ANONYMOUS, -1, 0);
+  DoMmap(PROT_READ | PROT_EXEC, MAP_ANONYMOUS);
 }
 
 BPF_DEATH_TEST_C(NaClNonSfiSandboxTest,
                  mmap_write_exec,
                  DEATH_SEGV_MESSAGE(sandbox::GetErrorMessageContentForTests()),
                  nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
-  mmap(NULL, getpagesize(), PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, -1, 0);
+  DoMmap(PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS);
 }
 
 BPF_DEATH_TEST_C(NaClNonSfiSandboxTest,
                  mmap_read_write_exec,
                  DEATH_SEGV_MESSAGE(sandbox::GetErrorMessageContentForTests()),
                  nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
-  mmap(NULL, getpagesize(), PROT_READ | PROT_WRITE | PROT_EXEC,
-       MAP_ANONYMOUS, -1, 0);
+  DoMmap(PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS);
 }
 
 BPF_TEST_C(NaClNonSfiSandboxTest,
            mprotect_allowed,
            nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
   void* ptr = DoAllowedAnonymousMmap();
   BPF_ASSERT_NE(MAP_FAILED, ptr);
   BPF_ASSERT_EQ(0, mprotect(ptr, getpagesize(), PROT_READ));
   BPF_ASSERT_EQ(0, munmap(ptr, getpagesize()));
 }
@@ skipping 10 matching lines @@
   mprotect(ptr, getpagesize(), PROT_READ | PROT_GROWSDOWN);
 }
 
 BPF_TEST_C(NaClNonSfiSandboxTest,
            brk,
            nacl::nonsfi::NaClNonSfiBPFSandboxPolicy) {
   char* next_brk = static_cast<char*>(sbrk(0)) + getpagesize();
   // The kernel interface must return zero for brk.
   BPF_ASSERT_EQ(0, syscall(__NR_brk, next_brk));
   // The libc wrapper translates it to ENOMEM.
+
+  // Note: PNaCl toolchain does not provide brk() system call wrapper.
+#if !defined(OS_NACL_NONSFI)
   errno = 0;
   BPF_ASSERT_EQ(-1, brk(next_brk));
   BPF_ASSERT_EQ(ENOMEM, errno);
+#endif
 }
 
 // clockid restrictions are mostly tested in sandbox/ with the
 // RestrictClockID() unittests. Some basic tests are duplicated here as
 // a precaution.
 
 void CheckClock(clockid_t clockid) {
   struct timespec ts;
   ts.tv_sec = ts.tv_nsec = -1;
   BPF_ASSERT_EQ(0, clock_gettime(clockid, &ts));
@@ skipping 53 matching lines @@
 RESTRICT_SYSCALL_EPERM_TEST(ptrace);
 RESTRICT_SYSCALL_EPERM_TEST(set_robust_list);
 #if defined(__i386__) || defined(__x86_64__)
 RESTRICT_SYSCALL_EPERM_TEST(time);
 #endif
 
 }  // namespace
 
 #endif  // !ADDRESS_SANITIZER && !THREAD_SANITIZER &&
         // !MEMORY_SANITIZER && !LEAK_SANITIZER