Aarch64 buildfix.

sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc

 // Copyright 2015 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.
 
 #include <errno.h>
 #include <fcntl.h>
 #include <pthread.h>
 #include <sched.h>
 #include <signal.h>
 #include <stddef.h>
@@ skipping 1859 matching lines @@
 #endif
 
 #if defined(__arm__)
 #ifndef PTRACE_SET_SYSCALL
 #define PTRACE_SET_SYSCALL 23
 #endif
 #endif
 
 #if defined(__aarch64__)
 #ifndef PTRACE_GETREGS
+#ifdef __GLIBC__

[Jorge Lucangeli Obes, 2016/11/22 16:56:49]

Please use #if defined(...) here.

+#define PTRACE_GETREGS static_cast<enum __ptrace_request>(12)
+#else
 #define PTRACE_GETREGS 12
 #endif

[Jorge Lucangeli Obes, 2016/11/22 16:56:49]

We have too many endifs. Let's comment what they do.

#endif  // defined(__GLIBC__)
#endif  // !defined(PTRACE_GETREGS)
#endif  // defined(__aarch64)

 #endif
+#endif
 
 #if defined(__aarch64__)
 #ifndef PTRACE_SETREGS
+#ifdef __GLIBC__

[Jorge Lucangeli Obes, 2016/11/22 16:56:49]

Same.

+#define PTRACE_SETREGS static_cast<enum __ptrace_request>(13)
+#else
 #define PTRACE_SETREGS 13
 #endif

[Jorge Lucangeli Obes, 2016/11/22 16:56:49]

Same:

#endif  // defined(__GLIBC__)
#endif  // !defined(PTRACE_SETREGS)
#endif  // defined(__aarch64)

 #endif
+#endif
 
 // Changes the syscall to run for a child being sandboxed using seccomp-bpf with
 // PTRACE_O_TRACESECCOMP.  Should only be called when the child is stopped on
 // PTRACE_EVENT_SECCOMP.
 //
 // regs should contain the current set of registers of the child, obtained using
 // PTRACE_GETREGS.
 //
 // Depending on the architecture, this may modify regs, so the caller is
 // responsible for committing these changes using PTRACE_SETREGS.
@@ skipping 357 matching lines @@
   BPF_ASSERT_EQ(ENOSYS, errno);
 
   BPF_ASSERT_EQ(-1, syscall(__NR_setgid, 300));
   BPF_ASSERT_EQ(EPERM, errno);
 }
 
 }  // namespace
 
 }  // namespace bpf_dsl
 }  // namespace sandbox