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#include "btree_dir.h"
#include "crypto.h"
#include "myutils.h"
#include "test_common.h"
#include <catch.hpp>
#include <algorithm>
#include <limits>
#include <random>
#include <string>
#include <unordered_set>
#include <vector>
#include <cryptopp/rng.h>
static void test(securefs::BtreeDirectory& dir,
securefs::Directory& reference,
unsigned rounds,
double prob_get,
double prob_add,
double prob_del,
unsigned sequence) THREAD_ANNOTATION_REQUIRES(dir)
THREAD_ANNOTATION_REQUIRES(reference)
{
(void)sequence; // May be used later
bool is_prob_valid = (prob_get >= 0 && prob_add >= 0 && prob_del >= 0
&& prob_get + prob_add + prob_del <= 1.0);
REQUIRE(is_prob_valid);
std::uniform_real_distribution<> prob_dist(0, 1);
std::uniform_int_distribution<int> name_dist(0, 65535);
std::vector<std::string> filenames, filenames_prime;
securefs::Directory::callback inserter
= [&](const std::string& name, const securefs::id_type&, int) -> bool
{
filenames.push_back(name);
return true;
};
securefs::Directory::callback inserter_prime
= [&](const std::string& name, const securefs::id_type&, int) -> bool
{
filenames_prime.push_back(name);
return true;
};
dir.iterate_over_entries(inserter);
reference.iterate_over_entries(inserter_prime);
std::sort(filenames.begin(), filenames.end());
std::sort(filenames_prime.begin(), filenames_prime.end());
bool equal_filenames = (filenames == filenames_prime);
REQUIRE(equal_filenames);
securefs::id_type id, id_prime;
int type, type_prime;
for (unsigned i = 0; i < rounds; ++i)
{
auto p = prob_dist(get_random_number_engine());
if (p < prob_get)
{
filenames.clear();
dir.iterate_over_entries(inserter);
for (const std::string& n : filenames)
{
bool got = dir.get_entry(n, id, type);
bool got_prime = reference.get_entry(n, id_prime, type_prime);
REQUIRE(got == got_prime);
bool id_equal = (id == id_prime);
REQUIRE(id_equal);
REQUIRE(type == type_prime);
}
}
else if (p < prob_get + prob_add)
{
auto name = securefs::strprintf("%12d", name_dist(get_random_number_engine()));
securefs::generate_random(id.data(), id.size());
type = S_IFREG;
bool added = dir.add_entry(name, id, type);
bool added_prime = reference.add_entry(name, id, type);
REQUIRE(added == added_prime);
filenames.push_back(std::move(name));
}
else if (p < prob_get + prob_add + prob_del)
{
if (filenames.empty())
continue;
std::uniform_int_distribution<size_t> index_dist(0, filenames.size() - 1);
size_t idx = index_dist(get_random_number_engine());
bool removed = dir.remove_entry(filenames[idx], id, type);
bool removed_prime = reference.remove_entry(filenames[idx], id_prime, type_prime);
REQUIRE(removed == removed_prime);
filenames.erase(filenames.begin() + idx);
}
else
{
REQUIRE(dir.validate_free_list());
REQUIRE(dir.validate_btree_structure());
}
}
}
static void test_btree_dir(unsigned max_padding_size)
{
const size_t NUM_ENTRIES = 1000;
securefs::key_type key(0x3e);
securefs::id_type null_id{};
securefs::OSService service("tmp");
auto tmp1 = service.temp_name("btree", "1");
auto tmp2 = service.temp_name("btree", "2");
auto tmp3 = service.temp_name("btree", "3");
auto tmp4 = service.temp_name("btree", "4");
int flags = O_RDWR | O_EXCL | O_CREAT;
{
securefs::BtreeDirectory dir(service.open_file_stream(tmp1, flags, 0644),
service.open_file_stream(tmp2, flags, 0644),
key,
null_id,
true,
8000,
12,
max_padding_size,
false);
securefs::SimpleDirectory ref_dir(service.open_file_stream(tmp3, flags, 0644),
service.open_file_stream(tmp4, flags, 0644),
key,
null_id,
true,
8000,
12,
max_padding_size,
false);
securefs::DoubleFileLockGuard dflg(dir, ref_dir);
test(dir, ref_dir, 1000, 0.3, 0.5, 0.1, 1);
test(dir, ref_dir, 1000, 0.3, 0.1, 0.5, 2);
test(dir, ref_dir, 1000, 0.3, 0.3, 0.3, 3);
dir.flush();
ref_dir.flush();
}
{
// Test if the data persists on the disk
securefs::BtreeDirectory dir(service.open_file_stream(tmp1, O_RDWR, 0),
service.open_file_stream(tmp2, O_RDWR, 0),
key,
null_id,
true,
8000,
12,
max_padding_size,
false);
securefs::SimpleDirectory ref_dir(service.open_file_stream(tmp3, O_RDWR, 0),
service.open_file_stream(tmp4, O_RDWR, 0),
key,
null_id,
true,
8000,
12,
max_padding_size,
false);
securefs::DoubleFileLockGuard dflg(dir, ref_dir);
test(dir, ref_dir, 1000, 0.3, 0.3, 0.3, 4);
dir.flush();
ref_dir.flush();
}
}
TEST_CASE("Test BtreeDirectory")
{
test_btree_dir(0);
test_btree_dir(128);
}
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