OpenBSD patches for base / split from CR #8275005

base/debug/debugger_posix.cc

 // Copyright (c) 2011 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 "base/debug/debugger.h"
 #include "build/build_config.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
@@ skipping 41 matching lines @@
 #endif
 
 namespace base {
 namespace debug {
 
 bool SpawnDebuggerOnProcess(unsigned /* process_id */) {
   NOTIMPLEMENTED();
   return false;
 }
 
-#if defined(OS_MACOSX)
+#if defined(OS_MACOSX) || defined(OS_OPENBSD)
 
 // Based on Apple's recommended method as described in
 // http://developer.apple.com/qa/qa2004/qa1361.html
 bool BeingDebugged() {
   // If the process is sandboxed then we can't use the sysctl, so cache the
   // value.
   static bool is_set = false;
   static bool being_debugged = false;
 
   if (is_set) {
     return being_debugged;
   }
 
   // Initialize mib, which tells sysctl what info we want.  In this case,
   // we're looking for information about a specific process ID.
   int mib[] = {
     CTL_KERN,
     KERN_PROC,
     KERN_PROC_PID,
     getpid()
+#if defined(OS_OPENBSD)
+    , sizeof(struct kinfo_proc),
+    0
+#endif
   };
 
   // Caution: struct kinfo_proc is marked __APPLE_API_UNSTABLE.  The source and
   // binary interfaces may change.
   struct kinfo_proc info;
   size_t info_size = sizeof(info);
 
+#if defined(OS_OPENBSD)
+  if (sysctl(mib, arraysize(mib), NULL, &info_size, NULL, 0) < 0)
+    return -1;
+
+  mib[5] = (info_size / sizeof(struct kinfo_proc));
+#endif
+
   int sysctl_result = sysctl(mib, arraysize(mib), &info, &info_size, NULL, 0);
   DCHECK_EQ(sysctl_result, 0);
   if (sysctl_result != 0) {
     is_set = true;
     being_debugged = false;
     return being_debugged;
   }
 
   // This process is being debugged if the P_TRACED flag is set.
   is_set = true;
+#if defined(OS_OPENBSD)
+  being_debugged = (info.p_flag & P_TRACED) != 0;
+#else
   being_debugged = (info.kp_proc.p_flag & P_TRACED) != 0;
+#endif
   return being_debugged;
 }
 
 #elif defined(OS_LINUX) || defined(OS_ANDROID)
 
 // We can look in /proc/self/status for TracerPid.  We are likely used in crash
 // handling, so we are careful not to use the heap or have side effects.
 // Another option that is common is to try to ptrace yourself, but then we
 // can't detach without forking(), and that's not so great.
 // static
@@ skipping 86 matching lines @@
 
 void BreakDebugger() {
   DEBUG_BREAK();
 #if defined(NDEBUG)
   _exit(1);
 #endif
 }
 
 }  // namespace debug
 }  // namespace base