Implement /proc/self/maps/ parsing code.

base/debug/proc_maps_unittest.cc

+// Copyright (c) 2013 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 <inttypes.h>
+
+#include "base/debug/proc_maps.h"
+#include "base/logging.h"
+#include "base/strings/stringprintf.h"
+#include "build/build_config.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace base {
+namespace debug {
+
+#if defined(OS_LINUX) || defined(OS_ANDROID)
+
+TEST(ProcMapsTest, NoSpaces) {
+  static const char kNoSpaces[] =
+      "00400000-0040b000 r-xp 00002200 fc:00 794418 /bin/cat\n";
+
+  std::vector<MappedMemoryRegion> regions;
+  ParseProcMaps(kNoSpaces, &regions);
+  ASSERT_EQ(1u, regions.size());
+
+  EXPECT_EQ(0x00400000u, regions[0].start);
+  EXPECT_EQ(0x0040b000u, regions[0].end);
+  EXPECT_EQ(0x00002200u, regions[0].offset);
+  EXPECT_EQ(FilePath("/bin/cat").value(), regions[0].path.value());
+}
+
+TEST(ProcMapsTest, Spaces) {
+  static const char kSpaces[] =
+      "00400000-0040b000 r-xp 00002200 fc:00 794418 /bin/space cat\n";
+
+  std::vector<MappedMemoryRegion> regions;
+  ParseProcMaps(kSpaces, &regions);
+  ASSERT_EQ(1u, regions.size());
+
+  EXPECT_EQ(0x00400000u, regions[0].start);
+  EXPECT_EQ(0x0040b000u, regions[0].end);
+  EXPECT_EQ(0x00002200u, regions[0].offset);
+  EXPECT_EQ(FilePath("/bin/space cat").value(), regions[0].path.value());
+}
+
+TEST(ProcMapsTest, NoPath) {
+  static const char kNoPath[] =
+      "00400000-0040b000 rw-p 00000000 00:00 0 \n";
+
+  std::vector<MappedMemoryRegion> regions;
+  ParseProcMaps(kNoPath, &regions);
+  ASSERT_EQ(1u, regions.size());
+
+  EXPECT_EQ(0x00400000u, regions[0].start);
+  EXPECT_EQ(0x0040b000u, regions[0].end);
+  EXPECT_EQ(0x00000000u, regions[0].offset);
+  EXPECT_EQ(FilePath().value(), regions[0].path.value());
+}
+
+TEST(ProcMapsTest, Heap) {
+  static const char kHeap[] =
+      "022ac000-022cd000 rw-p 00000000 00:00 0 [heap]\n";
+
+  std::vector<MappedMemoryRegion> regions;
+  ParseProcMaps(kHeap, &regions);
+  ASSERT_EQ(1u, regions.size());
+
+  EXPECT_EQ(0x022ac000u, regions[0].start);
+  EXPECT_EQ(0x022cd000u, regions[0].end);
+  EXPECT_EQ(0x00000000u, regions[0].offset);
+  EXPECT_EQ(FilePath("[heap]").value(), regions[0].path.value());
+}
+
+#if defined(ARCH_CPU_32_BITS)
+TEST(ProcMapsTest, Stack32) {
+  static const char kStack[] =
+      "beb04000-beb25000 rw-p 00000000 00:00 0 [stack]\n";
+
+  std::vector<MappedMemoryRegion> regions;
+  ParseProcMaps(kStack, &regions);
+  ASSERT_EQ(1u, regions.size());
+
+  EXPECT_EQ(0xbeb04000u, regions[0].start);
+  EXPECT_EQ(0xbeb25000u, regions[0].end);
+  EXPECT_EQ(0x00000000u, regions[0].offset);
+  EXPECT_EQ(FilePath("[stack]").value(), regions[0].path.value());
+}
+#endif
+
+#if defined(ARCH_CPU_64_BITS)
+TEST(ProcMapsTest, Stack64) {
+  static const char kStack[] =
+      "7fff69c5b000-7fff69c7d000 rw-p 00000000 00:00 0 [stack]\n";
+
+  std::vector<MappedMemoryRegion> regions;
+  ParseProcMaps(kStack, &regions);
+  ASSERT_EQ(1u, regions.size());
+
+  EXPECT_EQ(0x7fff69c5b000u, regions[0].start);
+  EXPECT_EQ(0x7fff69c7d000u, regions[0].end);
+  EXPECT_EQ(0x00000000u, regions[0].offset);
+  EXPECT_EQ(FilePath("[stack]").value(), regions[0].path.value());
+}
+#endif
+
+TEST(ProcMapsTest, Multiple) {
+  static const char kMultiple[] =
+      "00400000-0040b000 r-xp 00000000 fc:00 794418 /bin/cat\n"
+      "0060a000-0060b000 r--p 0000a000 fc:00 794418 /bin/cat\n"
+      "0060b000-0060c000 rw-p 0000b000 fc:00 794418 /bin/cat\n";
+
+  std::vector<MappedMemoryRegion> regions;
+  ParseProcMaps(kMultiple, &regions);
+  ASSERT_EQ(3u, regions.size());
+
+  EXPECT_EQ(0x00400000u, regions[0].start);
+  EXPECT_EQ(0x0040b000u, regions[0].end);
+  EXPECT_EQ(0x00000000u, regions[0].offset);
+  EXPECT_EQ(FilePath("/bin/cat").value(), regions[0].path.value());
+
+  EXPECT_EQ(0x0060a000u, regions[1].start);
+  EXPECT_EQ(0x0060b000u, regions[1].end);
+  EXPECT_EQ(0x0000a000u, regions[1].offset);
+  EXPECT_EQ(FilePath("/bin/cat").value(), regions[1].path.value());
+
+  EXPECT_EQ(0x0060b000u, regions[2].start);
+  EXPECT_EQ(0x0060c000u, regions[2].end);
+  EXPECT_EQ(0x0000b000u, regions[2].offset);
+  EXPECT_EQ(FilePath("/bin/cat").value(), regions[2].path.value());
+}
+
+TEST(ProcMapsTest, ReadProcMaps) {
+  std::vector<MappedMemoryRegion> regions;
+  ParseProcMaps(ReadProcMaps(), &regions);
+  ASSERT_FALSE(regions.empty());
+
+  // We should be find some mention of base_unittests in one of the paths.
+  bool found_base_unittests = false;
+  for (size_t i = 0; i < regions.size(); ++i) {
+    if (regions[i].path.value().find("base_unittests") != std::string::npos) {
+      found_base_unittests = true;
+      break;
+    }
+  }
+
+  EXPECT_TRUE(found_base_unittests);
+}
+

[satorux1, 2013/07/01 03:59:56]

Add a test for broken input data?

[scherkus (not reviewing), 2013/07/01 21:59:45]

ah! good call

also added tests for permissions

+#endif
+
+}  // namespace debug
+}  // namespace base