mirror of
https://github.com/boykopovar/AnyPS5.git
synced 2026-10-21 16:12:47 -05:00
Alexej Szpevák
5433b32b7d
fopen_s returned ENOENT for every failed open, including an invalid mode, a directory opened for writing and the loop and long-name cases. C11 K.3.5.2.1 only asks for a nonzero value; Microsoft's CRT, which shares Dinkumware's library, returns errno. fopen_s now returns the errno fopen set.
110 lines
4.0 KiB
C++
110 lines
4.0 KiB
C++
#include "prx/libc/include/general/VabiMacros.hpp"
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#include <chrono>
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#include <cstdio>
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#include <cstdlib>
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#include <filesystem>
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#include <fstream>
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#include <string>
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#include <unistd.h>
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extern "C" {
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void* APS5_VABI fopen_nid_postfix(const char* filename, const char* mode);
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int APS5_VABI fclose_nid_postfix(void* stream);
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void* APS5_VABI freopen_nid_postfix(const char* filename, const char* mode, void* stream);
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int APS5_VABI fopen_s_nid_postfix(void** result, const char* filename, const char* mode);
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int* APS5_VABI __error_nid_postfix();
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}
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namespace {
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void Require(bool value, int line) {
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if (!value) {
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std::fprintf(stderr, "fopen error check failed at line %d, errno %d\n", line, *__error_nid_postfix());
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std::exit(1);
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}
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}
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#define Check(value) Require((value), __LINE__)
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constexpr int GuestEnoent = 2;
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constexpr int GuestEisdir = 21;
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constexpr int GuestEinval = 22;
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constexpr int GuestEloop = 62;
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constexpr int GuestEnametoolong = 63;
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const std::string LongName(300, 'n');
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std::filesystem::path EnterFreshRoot() {
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const auto root = std::filesystem::temp_directory_path() /
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("anyps5-fopen-errors-" + std::to_string(std::chrono::steady_clock::now().time_since_epoch().count()));
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std::filesystem::create_directories(root / "folder");
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std::filesystem::current_path(root);
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Check(::symlink("loop", "loop") == 0);
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{ std::ofstream file("plain.txt"); file << "plain"; }
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return root;
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}
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bool OpenFails(const char* name, const char* mode, int error) {
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*__error_nid_postfix() = 0;
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const bool failed = fopen_nid_postfix(name, mode) == nullptr && *__error_nid_postfix() == error;
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*__error_nid_postfix() = 0;
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return failed;
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}
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void Open() {
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Check(OpenFails("loop", "r", GuestEloop));
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Check(OpenFails("loop", "w", GuestEloop));
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Check(OpenFails("loop/inside", "r", GuestEloop));
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Check(OpenFails(LongName.c_str(), "r", GuestEnametoolong));
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Check(OpenFails(LongName.c_str(), "w", GuestEnametoolong));
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Check(OpenFails((LongName + "/inside").c_str(), "a", GuestEnametoolong));
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Check(OpenFails("missing.txt", "r", GuestEnoent));
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Check(OpenFails("folder", "w", GuestEisdir));
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void* plain = fopen_nid_postfix("plain.txt", "r");
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Check(plain != nullptr && fclose_nid_postfix(plain) == 0);
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}
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bool ReopenFails(const char* name, const char* mode, int error) {
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void* stream = fopen_nid_postfix("plain.txt", "r");
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Check(stream != nullptr);
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*__error_nid_postfix() = 0;
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const bool failed = freopen_nid_postfix(name, mode, stream) == nullptr && *__error_nid_postfix() == error;
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*__error_nid_postfix() = 0;
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return failed;
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}
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void Reopen() {
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Check(ReopenFails("loop", "r", GuestEloop));
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Check(ReopenFails("loop/inside", "w", GuestEloop));
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Check(ReopenFails(LongName.c_str(), "r", GuestEnametoolong));
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Check(ReopenFails(LongName.c_str(), "w", GuestEnametoolong));
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Check(ReopenFails("missing.txt", "r", GuestEnoent));
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void* stream = fopen_nid_postfix("plain.txt", "r");
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Check(stream != nullptr);
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void* reopened = freopen_nid_postfix("plain.txt", "r", stream);
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Check(reopened != nullptr && fclose_nid_postfix(reopened) == 0);
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}
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void CheckedOpen() {
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void* stream = reinterpret_cast<void*>(1);
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Check(fopen_s_nid_postfix(&stream, "loop", "r") == GuestEloop && stream == nullptr);
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Check(fopen_s_nid_postfix(&stream, LongName.c_str(), "w") == GuestEnametoolong && stream == nullptr);
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Check(fopen_s_nid_postfix(&stream, "folder", "w") == GuestEisdir && stream == nullptr);
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Check(fopen_s_nid_postfix(&stream, "plain.txt", "z") == GuestEinval && stream == nullptr);
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Check(fopen_s_nid_postfix(&stream, "missing.txt", "r") == GuestEnoent && stream == nullptr);
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Check(fopen_s_nid_postfix(&stream, "plain.txt", "r") == 0 && stream != nullptr && fclose_nid_postfix(stream) == 0);
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}
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}
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int main() {
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const auto root = EnterFreshRoot();
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Open();
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Reopen();
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CheckedOpen();
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std::error_code error;
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std::filesystem::current_path(std::filesystem::temp_directory_path(), error);
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std::filesystem::remove_all(root, error);
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return 0;
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}
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