/* * Copyright (C) 2019 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 "MountRegistry.h" #include #include #include #include #include #include #include #include #include #include "incfs.h" #include "path.h" using namespace android::incfs; using namespace std::literals; class MountRegistryTest : public ::testing::Test { protected: virtual void SetUp() {} virtual void TearDown() {} MountRegistry::Mounts mounts_; MountRegistry::Mounts& r() { return mounts_; } }; TEST_F(MountRegistryTest, RootForRoot) { r().addRoot("/root", "/backing"); ASSERT_STREQ("/root", r().rootFor("/root").data()); ASSERT_STREQ("/root", r().rootFor("/root/1").data()); ASSERT_STREQ("/root", r().rootFor("/root/1/2").data()); ASSERT_STREQ(nullptr, r().rootFor("/root1/1/2").data()); ASSERT_STREQ(nullptr, r().rootFor("/1/root").data()); ASSERT_STREQ(nullptr, r().rootFor("root").data()); } TEST_F(MountRegistryTest, OneBind) { r().addRoot("/root", "/backing"); r().addBind("/root/1", "/bind"); ASSERT_STREQ("/root", r().rootFor("/root").data()); ASSERT_STREQ("/root", r().rootFor("/bind").data()); ASSERT_STREQ("/root", r().rootFor("/bind/1").data()); ASSERT_STREQ("/root", r().rootFor("/root/1").data()); ASSERT_STREQ(nullptr, r().rootFor("/1/bind").data()); ASSERT_STREQ(nullptr, r().rootFor("bind").data()); ASSERT_STREQ(nullptr, r().rootFor("/bind1").data()); ASSERT_STREQ(nullptr, r().rootFor("/.bind").data()); } TEST_F(MountRegistryTest, MultiBind) { r().addRoot("/root", "/backing"); r().addBind("/root/1", "/bind"); r().addBind("/root/2/3", "/bind2"); r().addBind("/root/2/3", "/other/bind"); ASSERT_STREQ("/root", r().rootFor("/root").data()); ASSERT_STREQ("/root", r().rootFor("/bind").data()); ASSERT_STREQ("/root", r().rootFor("/bind2").data()); ASSERT_STREQ("/root", r().rootFor("/other/bind/dir").data()); ASSERT_EQ("/root"s, r().rootAndSubpathFor("/root").first->path); ASSERT_EQ(""s, r().rootAndSubpathFor("/root").second); ASSERT_EQ("/root"s, r().rootAndSubpathFor("/bind").first->path); ASSERT_EQ("1"s, r().rootAndSubpathFor("/bind").second); ASSERT_EQ("/root"s, r().rootAndSubpathFor("/bind2").first->path); ASSERT_EQ("2/3"s, r().rootAndSubpathFor("/bind2").second); ASSERT_EQ("/root"s, r().rootAndSubpathFor("/bind2/blah").first->path); ASSERT_EQ("2/3/blah"s, r().rootAndSubpathFor("/bind2/blah").second); ASSERT_EQ("/root"s, r().rootAndSubpathFor("/other/bind/blah").first->path); ASSERT_EQ("2/3/blah"s, r().rootAndSubpathFor("/other/bind/blah").second); } TEST_F(MountRegistryTest, MultiRoot) { r().addRoot("/root", "/backing"); r().addBind("/root", "/bind"); ASSERT_STREQ("/root", r().rootFor("/root").data()); ASSERT_STREQ("/root", r().rootFor("/bind").data()); ASSERT_STREQ("/root", r().rootFor("/bind/2").data()); } static MountRegistry::Mounts makeFrom(std::string_view str) { TemporaryFile f; EXPECT_TRUE(android::base::WriteFully(f.fd, str.data(), str.size())); EXPECT_EQ(0, lseek(f.fd, 0, SEEK_SET)); // rewind MountRegistry::Mounts m; EXPECT_TRUE(m.loadFrom(f.fd, INCFS_NAME)); return std::move(m); } TEST_F(MountRegistryTest, MultiRootLoad) { constexpr char mountsFile[] = R"(4605 34 0:154 / /mnt/installer/0/0000000000000000000000000000CAFEF00D2019 rw,nosuid,nodev,noexec,noatime shared:45 master:43 - fuse /dev/fuse rw,lazytime,user_id=0,group_id=0,allow_other 4561 35 0:154 / /mnt/androidwritable/0/0000000000000000000000000000CAFEF00D2019 rw,nosuid,nodev,noexec,noatime shared:44 master:43 - fuse /dev/fuse rw,lazytime,user_id=0,group_id=0,allow_other 4560 99 0:154 / /storage/0000000000000000000000000000CAFEF00D2019 rw,nosuid,nodev,noexec,noatime master:43 - fuse /dev/fuse rw,lazytime,user_id=0,group_id=0,allow_other 4650 30 0:44 /MyFiles /mnt/pass_through/0/0000000000000000000000000000CAFEF00D2019 rw,nosuid,nodev,noexec,relatime shared:31 - 9p media rw,sync,dirsync,access=client,trans=virtio 3181 79 0:146 / /data/incremental/MT_data_app_vmdl703/mount rw,nosuid,nodev,noatime shared:46 - incremental-fs /data/incremental/MT_data_app_vmdl703/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0 3182 77 0:146 / /var/run/mount/data/mount/data/incremental/MT_data_app_vmdl703/mount rw,nosuid,nodev,noatime shared:46 - incremental-fs /data/incremental/MT_data_app_vmdl703/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0 )"; auto m = makeFrom(mountsFile); EXPECT_EQ(size_t(1), m.size()); EXPECT_STREQ("/data/incremental/MT_data_app_vmdl703/mount", m.rootFor("/data/incremental/MT_data_app_vmdl703/mount/123/2").data()); EXPECT_STREQ("/data/incremental/MT_data_app_vmdl703/mount", m.rootFor("/var/run/mount/data/mount/data/incremental/MT_data_app_vmdl703/mount/" "some/thing") .data()); } TEST_F(MountRegistryTest, MultiRootLoadReversed) { constexpr char mountsFile[] = R"(4605 34 0:154 / /mnt/installer/0/0000000000000000000000000000CAFEF00D2019 rw,nosuid,nodev,noexec,noatime shared:45 master:43 - fuse /dev/fuse rw,lazytime,user_id=0,group_id=0,allow_other 4561 35 0:154 / /mnt/androidwritable/0/0000000000000000000000000000CAFEF00D2019 rw,nosuid,nodev,noexec,noatime shared:44 master:43 - fuse /dev/fuse rw,lazytime,user_id=0,group_id=0,allow_other 4560 99 0:154 / /storage/0000000000000000000000000000CAFEF00D2019 rw,nosuid,nodev,noexec,noatime master:43 - fuse /dev/fuse rw,lazytime,user_id=0,group_id=0,allow_other 4650 30 0:44 /MyFiles /mnt/pass_through/0/0000000000000000000000000000CAFEF00D2019 rw,nosuid,nodev,noexec,relatime shared:31 - 9p media rw,sync,dirsync,access=client,trans=virtio 3182 77 0:146 / /var/run/mount/data/mount/data/incremental/MT_data_app_vmdl703/mount rw,nosuid,nodev,noatime shared:46 - incremental-fs /data/incremental/MT_data_app_vmdl703/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0 3181 79 0:146 / /data/incremental/MT_data_app_vmdl703/mount rw,nosuid,nodev,noatime shared:46 - incremental-fs /data/incremental/MT_data_app_vmdl703/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0 )"; auto m = makeFrom(mountsFile); EXPECT_EQ(size_t(1), m.size()); EXPECT_STREQ("/data/incremental/MT_data_app_vmdl703/mount", m.rootFor("/data/incremental/MT_data_app_vmdl703/mount/123/2").data()); EXPECT_STREQ("/data/incremental/MT_data_app_vmdl703/mount", m.rootFor("/var/run/mount/data/mount/data/incremental/MT_data_app_vmdl703/mount/" "some/thing") .data()); } TEST_F(MountRegistryTest, LoadInvalid) { constexpr char mountsFile[] = R"(9465 93 0:281 // /data/incremental1 shared:56 - incremental-fs /data/incremental2 rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 9529 93 0:281 /st_232_0 /data/app/vmdl1998506227.tmp rw,nosuid,nodev,noatime shared:56 - incremental-fs /data/incremental/MT_data_app_vmdl199/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 9657 93 0:282 /st_233_0 /data/app/vmdl2034419270.tmp rw,nosuid,nodev,noatime shared:57 - incremental-fs /data/incremental/MT_data_app_vmdl203/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 9721 93 0:283 / /data/incremental/MT_data_app_vmdl154/mount rw,nosuid,nodev,noatime shared:58 - incremental-fs /data/incremental/MT_data_app_vmdl154/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 9785 93 0:283 /st_234_0 /data/app/vmdl1545425783.tmp rw,nosuid,nodev,noatime shared:58 - incremental-fs /data/incremental/MT_data_app_vmdl154/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 9849 93 0:284 / /data/incremental/MT_data_app_vmdl209/mount rw,nosuid,nodev,noatime shared:59 - incremental-fs /data/incremental/MT_data_app_vmdl209/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 9913 93 0:284 /st_235_0 /data/app/vmdl2099748756.tmp rw,nosuid,nodev,noatime shared:59 - incremental-fs /data/incremental/MT_data_app_vmdl209/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 4007 93 0:269 /st_240_1 /data/app/~~I499PLubwcOVbJaEFqpHHQ== rw,nosuid,nodev,noatime shared:44 - incremental-fs /data/incremental/MT_data_app_vmdl158/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 5285 93 0:270 /st_241_1 /data/app/~~CvgMdGm9eNJpvdq-62Jktg== rw,nosuid,nodev,noatime shared:45 - incremental-fs /data/incremental/MT_data_app_vmdl943/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 8786 93 0:271 /st_242_1 /data/app/~~_oNudLuBvqtSE78VoMVY5Q== rw,nosuid,nodev,noatime shared:46 - incremental-fs /data/incremental/MT_data_app_vmdl144/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 10358 93 0:272 /st_243_1 /data/app/~~o5-RadxV4DUe-mgPyv9SkQ== rw,nosuid,nodev,noatime shared:47 - incremental-fs /data/incremental/MT_data_app_vmdl642/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 10422 93 0:131 /st_244_1 /data/app/~~rTnKswx1F427UguGO9nDRA== rw,nosuid,nodev,noatime shared:48 - incremental-fs /data/incremental/MT_data_app_vmdl336/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 10486 93 0:132 /st_245_1 /data/app/~~ZIoVqPDBjLBeajD4thHsYA== rw,nosuid,nodev,noatime shared:49 - incremental-fs /data/incremental/MT_data_app_vmdl993/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid 10550 93 0:133 /st_246_1 /data/app/~~2qjtCtx5rqPW2Hwlrciu2w== rw,nosuid,nodev,noatime shared:50 - incremental-fs /data/incremental/MT_data_app_vmdl827/backing_store rw,seclabel,read_timeout_ms=10000,readahead=0,report_uid )"; auto m = makeFrom(mountsFile); // only two of the mounts in this file are valid EXPECT_EQ(size_t(2), m.size()); }