137 lines
4.7 KiB
C++
137 lines
4.7 KiB
C++
// This test tests various ways of renaming files in nested directory structures.
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// It tests both that the rename operation succeeds, and that it doesn't deadlock
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// This is important because our CryNode implementation accesses multiple blobs
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// (source, source_parent, target_parent, target_grandparent) and if any of those
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// overlap, we need to make sure that we don't deadlock by trying to load them
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// at the same time. This is also why these tests nest quite deeply.
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#include <gtest/gtest.h>
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#include "testutils/CryTestBase.h"
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#include <cryfs/impl/filesystem/CryDir.h>
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#include <cryfs/impl/filesystem/CryFile.h>
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#include <cryfs/impl/filesystem/CryOpenFile.h>
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#include <fspp/fs_interface/FuseErrnoException.h>
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#include <boost/algorithm/string/predicate.hpp>
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using ::testing::Combine;
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using ::testing::ValuesIn;
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using ::testing::TestWithParam;
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using std::vector;
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namespace bf = boost::filesystem;
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using fspp::fuse::FuseErrnoException;
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namespace {
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vector<bf::path> SourceDirs() {
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return {
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"/",
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"/a1",
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"/a1/b1",
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"/a1/b1/c1",
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"/a1/b1/c1/d1",
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"/a1/b1/c1/d1/e1",
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"/a1/b1/c1/d1/e1/f1",
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};
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}
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vector<bf::path> DestDirs() {
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auto result = SourceDirs();
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result.push_back("/a2");
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result.push_back("/a2/b");
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result.push_back("/a2/b/c");
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result.push_back("/a2/b/c/d");
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result.push_back("/a2/b/c/d/e");
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result.push_back("/a2/b/c/d/e/f");
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result.push_back("/a1/b2");
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result.push_back("/a1/b2/c");
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result.push_back("/a1/b2/c/d");
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result.push_back("/a1/b2/c/d/e");
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result.push_back("/a1/b2/c/d/e/f");
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result.push_back("/a1/b1/c2");
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result.push_back("/a1/b1/c2/d");
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result.push_back("/a1/b1/c2/d/e");
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result.push_back("/a1/b1/c2/d/e/f");
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result.push_back("/a1/b1/c1/d2");
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result.push_back("/a1/b1/c1/d2/e");
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result.push_back("/a1/b1/c1/d2/e/f");
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result.push_back("/a1/b1/c1/d1/e2");
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result.push_back("/a1/b1/c1/d1/e2/f");
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result.push_back("/a1/b1/c1/d1/e1/f2");
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return result;
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}
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}
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class CryNodeTest_RenameNested : public TestWithParam<std::tuple<bf::path, bf::path>>, public CryTestBase {
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public:
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void CreateDirs() {
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for (const auto& dir : SourceDirs()) {
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if (dir != "/") {
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CreateDir(dir);
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}
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}
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}
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void create_path_if_not_exists(const bf::path& path) {
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if (!Exists(path)) {
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if (path.has_parent_path()) {
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create_path_if_not_exists(path.parent_path());
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}
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CreateDir(path);
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}
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}
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void expect_rename_succeeds(const bf::path& source_path, const bf::path& dest_path) {
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auto source = device().Load(source_path).value();
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source->rename(dest_path);
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// Test that rename was successful
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if (source_path != dest_path && source_path != "/") {
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ASSERT_FALSE(Exists(source_path));
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}
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ASSERT_TRUE(Exists(dest_path));
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}
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void expect_rename_fails(const bf::path& source_path, const bf::path& dest_path, int expected_errno) {
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auto source = device().Load(source_path).value();
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try {
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source->rename(dest_path);
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ASSERT(false, "Expected throw FuseErrnoException(" + std::to_string(expected_errno) + " but didn't throw");
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} catch (const FuseErrnoException& e) {
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ASSERT_EQ(expected_errno, e.getErrno());
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}
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// Test rename wasn't successful
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if (dest_path != "/") {
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ASSERT_TRUE(Exists(source_path));
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}
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auto source_dirs = SourceDirs();
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if (source_path != dest_path && source_path != "/" && std::find(source_dirs.begin(), source_dirs.end(), dest_path) == source_dirs.end()) {
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ASSERT_FALSE(Exists(dest_path));
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}
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}
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};
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INSTANTIATE_TEST_SUITE_P(All, CryNodeTest_RenameNested, Combine(ValuesIn(SourceDirs()), ValuesIn(DestDirs())));
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TEST_P(CryNodeTest_RenameNested, Rename) {
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CreateDirs();
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auto source_path = std::get<0>(GetParam());
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auto dest_path = std::get<1>(GetParam());
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if (dest_path.has_parent_path()) {
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create_path_if_not_exists(dest_path.parent_path());
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}
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if (source_path == "/" || dest_path == "/") {
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expect_rename_fails(source_path, dest_path, EBUSY);
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} else if (source_path == dest_path) {
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expect_rename_succeeds(source_path, dest_path);
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} else if (boost::starts_with(source_path, dest_path)) {
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expect_rename_fails(source_path, dest_path, ENOTEMPTY);
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} else if (boost::starts_with(dest_path, source_path)) {
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expect_rename_fails(source_path, dest_path, EINVAL);
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} else {
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expect_rename_succeeds(source_path, dest_path);
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}
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}
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