Implement maps parsing.
The MapsOffline code is still in development so I'm not testing it very
thoroughly yet.
Bug: 23762183
Test: All unit tests pass.
Change-Id: I77aeac62940cd95c489ee221afe02349bfe39671
diff --git a/libunwindstack/tests/MapsTest.cpp b/libunwindstack/tests/MapsTest.cpp
new file mode 100644
index 0000000..7eb9bae
--- /dev/null
+++ b/libunwindstack/tests/MapsTest.cpp
@@ -0,0 +1,237 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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/mman.h>
+
+#include <android-base/file.h>
+#include <android-base/test_utils.h>
+#include <gtest/gtest.h>
+
+#include "Maps.h"
+
+TEST(MapsTest, parse_permissions) {
+ BufferMaps maps(
+ "1000-2000 ---- 00000000 00:00 0\n"
+ "2000-3000 r--- 00000000 00:00 0\n"
+ "3000-4000 -w-- 00000000 00:00 0\n"
+ "4000-5000 --x- 00000000 00:00 0\n"
+ "5000-6000 rwx- 00000000 00:00 0\n");
+
+ ASSERT_TRUE(maps.Parse());
+ ASSERT_EQ(5U, maps.Total());
+ auto it = maps.begin();
+ ASSERT_EQ(PROT_NONE, it->flags);
+ ASSERT_EQ(0x1000U, it->start);
+ ASSERT_EQ(0x2000U, it->end);
+ ASSERT_EQ(0U, it->offset);
+ ASSERT_EQ("", it->name);
+ ++it;
+ ASSERT_EQ(PROT_READ, it->flags);
+ ASSERT_EQ(0x2000U, it->start);
+ ASSERT_EQ(0x3000U, it->end);
+ ASSERT_EQ(0U, it->offset);
+ ASSERT_EQ("", it->name);
+ ++it;
+ ASSERT_EQ(PROT_WRITE, it->flags);
+ ASSERT_EQ(0x3000U, it->start);
+ ASSERT_EQ(0x4000U, it->end);
+ ASSERT_EQ(0U, it->offset);
+ ASSERT_EQ("", it->name);
+ ++it;
+ ASSERT_EQ(PROT_EXEC, it->flags);
+ ASSERT_EQ(0x4000U, it->start);
+ ASSERT_EQ(0x5000U, it->end);
+ ASSERT_EQ(0U, it->offset);
+ ASSERT_EQ("", it->name);
+ ++it;
+ ASSERT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, it->flags);
+ ASSERT_EQ(0x5000U, it->start);
+ ASSERT_EQ(0x6000U, it->end);
+ ASSERT_EQ(0U, it->offset);
+ ASSERT_EQ("", it->name);
+ ++it;
+ ASSERT_EQ(it, maps.end());
+}
+
+TEST(MapsTest, parse_name) {
+ BufferMaps maps(
+ "720b29b000-720b29e000 rw-p 00000000 00:00 0\n"
+ "720b29e000-720b29f000 rw-p 00000000 00:00 0 /system/lib/fake.so\n"
+ "720b29f000-720b2a0000 rw-p 00000000 00:00 0");
+
+ ASSERT_TRUE(maps.Parse());
+ ASSERT_EQ(3U, maps.Total());
+ auto it = maps.begin();
+ ASSERT_EQ("", it->name);
+ ASSERT_EQ(0x720b29b000U, it->start);
+ ASSERT_EQ(0x720b29e000U, it->end);
+ ASSERT_EQ(0U, it->offset);
+ ASSERT_EQ(PROT_READ | PROT_WRITE, it->flags);
+ ++it;
+ ASSERT_EQ("/system/lib/fake.so", it->name);
+ ASSERT_EQ(0x720b29e000U, it->start);
+ ASSERT_EQ(0x720b29f000U, it->end);
+ ASSERT_EQ(0U, it->offset);
+ ASSERT_EQ(PROT_READ | PROT_WRITE, it->flags);
+ ++it;
+ ASSERT_EQ("", it->name);
+ ASSERT_EQ(0x720b29f000U, it->start);
+ ASSERT_EQ(0x720b2a0000U, it->end);
+ ASSERT_EQ(0U, it->offset);
+ ASSERT_EQ(PROT_READ | PROT_WRITE, it->flags);
+ ++it;
+ ASSERT_EQ(it, maps.end());
+}
+
+TEST(MapsTest, parse_offset) {
+ BufferMaps maps(
+ "a000-e000 rw-p 00000000 00:00 0 /system/lib/fake.so\n"
+ "e000-f000 rw-p 00a12345 00:00 0 /system/lib/fake.so\n");
+
+ ASSERT_TRUE(maps.Parse());
+ ASSERT_EQ(2U, maps.Total());
+ auto it = maps.begin();
+ ASSERT_EQ(0U, it->offset);
+ ASSERT_EQ(0xa000U, it->start);
+ ASSERT_EQ(0xe000U, it->end);
+ ASSERT_EQ(PROT_READ | PROT_WRITE, it->flags);
+ ASSERT_EQ("/system/lib/fake.so", it->name);
+ ++it;
+ ASSERT_EQ(0xa12345U, it->offset);
+ ASSERT_EQ(0xe000U, it->start);
+ ASSERT_EQ(0xf000U, it->end);
+ ASSERT_EQ(PROT_READ | PROT_WRITE, it->flags);
+ ASSERT_EQ("/system/lib/fake.so", it->name);
+ ++it;
+ ASSERT_EQ(maps.end(), it);
+}
+
+TEST(MapsTest, device) {
+ BufferMaps maps(
+ "a000-e000 rw-p 00000000 00:00 0 /dev/\n"
+ "f000-f100 rw-p 00000000 00:00 0 /dev/does_not_exist\n"
+ "f100-f200 rw-p 00000000 00:00 0 /dev/ashmem/does_not_exist\n"
+ "f200-f300 rw-p 00000000 00:00 0 /devsomething/does_not_exist\n");
+
+ ASSERT_TRUE(maps.Parse());
+ ASSERT_EQ(4U, maps.Total());
+ auto it = maps.begin();
+ ASSERT_TRUE(it->flags & 0x8000);
+ ASSERT_EQ("/dev/", it->name);
+ ++it;
+ ASSERT_TRUE(it->flags & 0x8000);
+ ASSERT_EQ("/dev/does_not_exist", it->name);
+ ++it;
+ ASSERT_FALSE(it->flags & 0x8000);
+ ASSERT_EQ("/dev/ashmem/does_not_exist", it->name);
+ ++it;
+ ASSERT_FALSE(it->flags & 0x8000);
+ ASSERT_EQ("/devsomething/does_not_exist", it->name);
+}
+
+TEST(MapsTest, file_smoke) {
+ TemporaryFile tf;
+ ASSERT_TRUE(tf.fd != -1);
+
+ ASSERT_TRUE(
+ android::base::WriteStringToFile("720b29b000-720b29e000 r-xp a0000000 00:00 0 /fake.so\n"
+ "720b2b0000-720b2e0000 r-xp b0000000 00:00 0 /fake2.so\n"
+ "720b2e0000-720b2f0000 r-xp c0000000 00:00 0 /fake3.so\n",
+ tf.path, 0660, getuid(), getgid()));
+
+ FileMaps maps(tf.path);
+
+ ASSERT_TRUE(maps.Parse());
+ ASSERT_EQ(3U, maps.Total());
+ auto it = maps.begin();
+ ASSERT_EQ(0x720b29b000U, it->start);
+ ASSERT_EQ(0x720b29e000U, it->end);
+ ASSERT_EQ(0xa0000000U, it->offset);
+ ASSERT_EQ(PROT_READ | PROT_EXEC, it->flags);
+ ASSERT_EQ("/fake.so", it->name);
+ ++it;
+ ASSERT_EQ(0x720b2b0000U, it->start);
+ ASSERT_EQ(0x720b2e0000U, it->end);
+ ASSERT_EQ(0xb0000000U, it->offset);
+ ASSERT_EQ(PROT_READ | PROT_EXEC, it->flags);
+ ASSERT_EQ("/fake2.so", it->name);
+ ++it;
+ ASSERT_EQ(0x720b2e0000U, it->start);
+ ASSERT_EQ(0x720b2f0000U, it->end);
+ ASSERT_EQ(0xc0000000U, it->offset);
+ ASSERT_EQ(PROT_READ | PROT_EXEC, it->flags);
+ ASSERT_EQ("/fake3.so", it->name);
+ ++it;
+ ASSERT_EQ(it, maps.end());
+}
+
+TEST(MapsTest, find) {
+ BufferMaps maps(
+ "1000-2000 r--p 00000010 00:00 0 /system/lib/fake1.so\n"
+ "3000-4000 -w-p 00000020 00:00 0 /system/lib/fake2.so\n"
+ "6000-8000 --xp 00000030 00:00 0 /system/lib/fake3.so\n"
+ "a000-b000 rw-p 00000040 00:00 0 /system/lib/fake4.so\n"
+ "e000-f000 rwxp 00000050 00:00 0 /system/lib/fake5.so\n");
+ ASSERT_TRUE(maps.Parse());
+ ASSERT_EQ(5U, maps.Total());
+
+ ASSERT_TRUE(maps.Find(0x500) == nullptr);
+ ASSERT_TRUE(maps.Find(0x2000) == nullptr);
+ ASSERT_TRUE(maps.Find(0x5010) == nullptr);
+ ASSERT_TRUE(maps.Find(0x9a00) == nullptr);
+ ASSERT_TRUE(maps.Find(0xf000) == nullptr);
+ ASSERT_TRUE(maps.Find(0xf010) == nullptr);
+
+ MapInfo* info = maps.Find(0x1000);
+ ASSERT_TRUE(info != nullptr);
+ ASSERT_EQ(0x1000U, info->start);
+ ASSERT_EQ(0x2000U, info->end);
+ ASSERT_EQ(0x10U, info->offset);
+ ASSERT_EQ(PROT_READ, info->flags);
+ ASSERT_EQ("/system/lib/fake1.so", info->name);
+
+ info = maps.Find(0x3020);
+ ASSERT_TRUE(info != nullptr);
+ ASSERT_EQ(0x3000U, info->start);
+ ASSERT_EQ(0x4000U, info->end);
+ ASSERT_EQ(0x20U, info->offset);
+ ASSERT_EQ(PROT_WRITE, info->flags);
+ ASSERT_EQ("/system/lib/fake2.so", info->name);
+
+ info = maps.Find(0x6020);
+ ASSERT_TRUE(info != nullptr);
+ ASSERT_EQ(0x6000U, info->start);
+ ASSERT_EQ(0x8000U, info->end);
+ ASSERT_EQ(0x30U, info->offset);
+ ASSERT_EQ(PROT_EXEC, info->flags);
+ ASSERT_EQ("/system/lib/fake3.so", info->name);
+
+ info = maps.Find(0xafff);
+ ASSERT_TRUE(info != nullptr);
+ ASSERT_EQ(0xa000U, info->start);
+ ASSERT_EQ(0xb000U, info->end);
+ ASSERT_EQ(0x40U, info->offset);
+ ASSERT_EQ(PROT_READ | PROT_WRITE, info->flags);
+ ASSERT_EQ("/system/lib/fake4.so", info->name);
+
+ info = maps.Find(0xe500);
+ ASSERT_TRUE(info != nullptr);
+ ASSERT_EQ(0xe000U, info->start);
+ ASSERT_EQ(0xf000U, info->end);
+ ASSERT_EQ(0x50U, info->offset);
+ ASSERT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, info->flags);
+ ASSERT_EQ("/system/lib/fake5.so", info->name);
+}