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Merge pull request #6789 from leoetlino/rename-bug

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IOS/FS: Fix rename not handling existing target correctly
This commit is contained in:
Léo Lam 2018-05-09 19:07:39 +02:00 committed by GitHub
commit 274f418f4b
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2 changed files with 61 additions and 3 deletions
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11
Source/Core/Core/IOS/FS/HostBackend/FS.cpp
View File

@ -232,10 +232,17 @@ ResultCode HostFileSystem::Rename(Uid, Gid, const std::string& old_path,
// try to make the basis directory
File::CreateFullPath(new_name);
// if there is already a file, delete it
if (File::Exists(old_name) && File::Exists(new_name))
// If there is already something of the same type at the new path, delete it.
if (File::Exists(new_name))
{
const bool old_is_file = File::IsFile(old_name);
const bool new_is_file = File::IsFile(new_name);
if (old_is_file && new_is_file)
File::Delete(new_name);
else if (!old_is_file && !new_is_file)
File::DeleteDirRecursively(new_name);
else
return ResultCode::Invalid;
}
// finally try to rename the file

51
Source/UnitTests/Core/IOS/FS/FileSystemTest.cpp
View File

@ -107,6 +107,57 @@ TEST_F(FileSystemTest, Rename)
EXPECT_TRUE(m_fs->ReadDirectory(Uid{0}, Gid{0}, "/test").Succeeded());
}
TEST_F(FileSystemTest, RenameWithExistingTargetDirectory)
{
// Test directory -> existing, non-empty directory.
// IOS's FS sysmodule is not POSIX compliant and will remove the existing directory
// if it exists, even when there are files in it.
ASSERT_EQ(
m_fs->CreateDirectory(Uid{0}, Gid{0}, "/tmp/d", 0, Mode::ReadWrite, Mode::None, Mode::None),
ResultCode::Success);
ASSERT_EQ(
m_fs->CreateDirectory(Uid{0}, Gid{0}, "/tmp/d2", 0, Mode::ReadWrite, Mode::None, Mode::None),
ResultCode::Success);
ASSERT_EQ(
m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/d2/file", 0, Mode::ReadWrite, Mode::None, Mode::None),
ResultCode::Success);
EXPECT_EQ(m_fs->Rename(Uid{0}, Gid{0}, "/tmp/d", "/tmp/d2"), ResultCode::Success);
EXPECT_EQ(m_fs->ReadDirectory(Uid{0}, Gid{0}, "/tmp/d").Error(), ResultCode::NotFound);
const Result<std::vector<std::string>> children = m_fs->ReadDirectory(Uid{0}, Gid{0}, "/tmp/d2");
ASSERT_TRUE(children.Succeeded());
EXPECT_TRUE(children->empty());
}
TEST_F(FileSystemTest, RenameWithExistingTargetFile)
{
// Create the test source file and write some data (so that we can check its size later on).
ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f1", 0, Mode::ReadWrite, Mode::None, Mode::None),
ResultCode::Success);
const std::vector<u8> TEST_DATA{{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}};
std::vector<u8> read_buffer(TEST_DATA.size());
{
const Result<FileHandle> file = m_fs->OpenFile(Uid{0}, Gid{0}, "/tmp/f1", Mode::ReadWrite);
ASSERT_TRUE(file.Succeeded());
ASSERT_TRUE(file->Write(TEST_DATA.data(), TEST_DATA.size()).Succeeded());
}
// Create the test target file and leave it empty.
ASSERT_EQ(m_fs->CreateFile(Uid{0}, Gid{0}, "/tmp/f2", 0, Mode::ReadWrite, Mode::None, Mode::None),
ResultCode::Success);
// Rename f1 to f2 and check that f1 replaced f2.
EXPECT_EQ(m_fs->Rename(Uid{0}, Gid{0}, "/tmp/f1", "/tmp/f2"), ResultCode::Success);
ASSERT_FALSE(m_fs->GetMetadata(Uid{0}, Gid{0}, "/tmp/f1").Succeeded());
EXPECT_EQ(m_fs->GetMetadata(Uid{0}, Gid{0}, "/tmp/f1").Error(), ResultCode::NotFound);
const Result<Metadata> metadata = m_fs->GetMetadata(Uid{0}, Gid{0}, "/tmp/f2");
ASSERT_TRUE(metadata.Succeeded());
EXPECT_TRUE(metadata->is_file);
EXPECT_EQ(metadata->size, TEST_DATA.size());
}
TEST_F(FileSystemTest, GetDirectoryStats)
{
auto check_stats = [this](u32 clusters, u32 inodes) {