linux: Add ExceptionHandlerServer and ExceptionHandlerClient

Bug: crashpad:30 Change-Id: I60874a26ccb281144f870df2b4d16c6970a39f6b Reviewed-on: https://chromium-review.googlesource.com/772824 Commit-Queue: Joshua Peraza <[email protected]> Reviewed-by: Mark Mentovai <[email protected]>
sbahra · Dec 19, 2017 · 9b2ba58 · 9b2ba58
1 parent 99b0030
commit 9b2ba58
Show file tree

Hide file tree

Showing 27 changed files with 1,483 additions and 58 deletions.
diff --git a/compat/android/sys/epoll.cc b/compat/android/sys/epoll.cc
@@ -0,0 +1,37 @@
+// Copyright 2017 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <sys/epoll.h>
+
+#include <dlfcn.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#if __ANDROID_API__ < 21
+
+extern "C" {
+
+int epoll_create1(int flags) {
+  static const auto epoll_create1_p =
+      reinterpret_cast<int (*)(int)>(dlsym(RTLD_DEFAULT, "epoll_create1"));
+  if (epoll_create1_p) {
+    return epoll_create1_p(flags);
+  }
+
+  return syscall(SYS_epoll_create1, flags);
+}
+
+}  // extern "C"
+
+#endif  // __ANDROID_API__ < 21
diff --git a/compat/android/sys/epoll.h b/compat/android/sys/epoll.h
@@ -0,0 +1,50 @@
+// Copyright 2017 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CRASHPAD_COMPAT_ANDROID_SYS_EPOLL_H_
+#define CRASHPAD_COMPAT_ANDROID_SYS_EPOLL_H_
+
+#include_next <sys/epoll.h>
+
+#include <android/api-level.h>
+#include <fcntl.h>
+
+// This is missing from traditional headers before API 21.
+#if !defined(EPOLLRDHUP)
+#define EPOLLRDHUP 0x00002000
+#endif
+
+// EPOLL_CLOEXEC is undefined in traditional headers before API 21 and removed
+// from unified headers at API levels < 21 as a means to indicate that
+// epoll_create1 is missing from the C library, but the raw system call should
+// still be available.
+#if !defined(EPOLL_CLOEXEC)
+#define EPOLL_CLOEXEC O_CLOEXEC
+#endif
+
+#if __ANDROID_API__ < 21
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int epoll_create1(int flags);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // __ANDROID_API__ < 21
+
+#endif  // CRASHPAD_COMPAT_ANDROID_SYS_EPOLL_H_
diff --git a/compat/android/sys/syscall.h b/compat/android/sys/syscall.h
@@ -19,6 +19,10 @@
 
 // Android 5.0.0 (API 21) NDK
 
+#if !defined(SYS_epoll_create1)
+#define SYS_epoll_create1 __NR_epoll_create1
+#endif
+
 #if !defined(SYS_gettid)
 #define SYS_gettid __NR_gettid
 #endif

diff --git a/compat/compat.gyp b/compat/compat.gyp
@@ -26,6 +26,8 @@
         'android/linux/prctl.h',
         'android/linux/ptrace.h',
         'android/sched.h',
+        'android/sys/epoll.cc',
+        'android/sys/epoll.h',
         'android/sys/mman.cc',
         'android/sys/mman.h',
         'android/sys/syscall.h',

diff --git a/handler/handler.gyp b/handler/handler.gyp
@@ -39,6 +39,8 @@
         'crash_report_upload_thread.h',
         'handler_main.cc',
         'handler_main.h',
+        'linux/exception_handler_server.cc',
+        'linux/exception_handler_server.h',
         'mac/crash_report_exception_handler.cc',
         'mac/crash_report_exception_handler.h',
         'mac/exception_handler_server.cc',
@@ -54,6 +56,27 @@
         'win/crash_report_exception_handler.cc',
         'win/crash_report_exception_handler.h',
       ],
+      'conditions': [
+        ['OS=="linux" or OS=="android"', {
+          'sources!': [
+            'handler_main.cc',
+          ],
+        }],
+        ['OS=="linux"', {
+          'link_settings': {
+            'libraries': [
+              '-lcap',
+            ],
+          },
+        }],
+      ],
+      'target_conditions': [
+        ['OS=="android"', {
+          'sources/': [
+            ['include', '^linux/'],
+          ],
+        }],
+      ],
     },
     {
       'target_name': 'crashpad_handler',

diff --git a/handler/handler_test.gyp b/handler/handler_test.gyp
@@ -38,6 +38,7 @@
       ],
       'sources': [
         'crashpad_handler_test.cc',
+        'linux/exception_handler_server_test.cc',
         'minidump_to_upload_parameters_test.cc',
       ],
       'conditions': [
@@ -50,6 +51,13 @@
           ],
         }],
       ],
+      'target_conditions': [
+        ['OS=="android"', {
+          'sources/': [
+            ['include', '^linux/'],
+          ],
+        }],
+      ],
     },
     {
       'target_name': 'crashpad_handler_test_extended_handler',