sanitizer_common_libcdep.cc revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0 
1//===-- sanitizer_common_libcdep.cc ---------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file is shared between AddressSanitizer and ThreadSanitizer
11// run-time libraries.
12//===----------------------------------------------------------------------===//
13
14#include "sanitizer_common.h"
15#include "sanitizer_flags.h"
16
17namespace __sanitizer {
18
19bool PrintsToTty() {
20  MaybeOpenReportFile();
21  return internal_isatty(report_fd) != 0;
22}
23
24bool PrintsToTtyCached() {
25  // FIXME: Add proper Windows support to AnsiColorDecorator and re-enable color
26  // printing on Windows.
27  if (SANITIZER_WINDOWS)
28    return 0;
29
30  static int cached = 0;
31  static bool prints_to_tty;
32  if (!cached) {  // Not thread-safe.
33    prints_to_tty = PrintsToTty();
34    cached = 1;
35  }
36  return prints_to_tty;
37}
38
39bool ColorizeReports() {
40  const char *flag = common_flags()->color;
41  return internal_strcmp(flag, "always") == 0 ||
42         (internal_strcmp(flag, "auto") == 0 && PrintsToTtyCached());
43}
44
45static void (*sandboxing_callback)();
46void SetSandboxingCallback(void (*f)()) {
47  sandboxing_callback = f;
48}
49
50}  // namespace __sanitizer
51
52void NOINLINE
53__sanitizer_sandbox_on_notify(__sanitizer_sandbox_arguments *args) {
54  PrepareForSandboxing(args);
55  if (sandboxing_callback)
56    sandboxing_callback();
57}
58