fs_helpers.h

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-present The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#ifndef BITCOIN_UTIL_FS_HELPERS_H
#define BITCOIN_UTIL_FS_HELPERS_H

#include <util/fs.h>

#include <cstdint>
#include <cstdio>
#include <iosfwd>
#include <limits>
#include <optional>

#ifdef __APPLE__
enum class FSType {
    EXFAT,
    OTHER,
    ERROR
};

FSType GetFilesystemType(const fs::path& path);
#endif

bool FileCommit(FILE* file);

void DirectoryCommit(const fs::path& dirname);

bool TruncateFile(FILE* file, unsigned int length);
int RaiseFileDescriptorLimit(int nMinFD);
void AllocateFileRange(FILE* file, unsigned int offset, unsigned int length);

[[nodiscard]] bool RenameOver(fs::path src, fs::path dest);

namespace util {
enum class LockResult {
    Success,
    ErrorWrite,
    ErrorLock,
};
[[nodiscard]] LockResult LockDirectory(const fs::path& directory, const fs::path& lockfile_name, bool probe_only = false);
} // namespace util
void UnlockDirectory(const fs::path& directory, const fs::path& lockfile_name);
bool CheckDiskSpace(const fs::path& dir, uint64_t additional_bytes = 0);

std::streampos GetFileSize(const char* path, std::streamsize max = std::numeric_limits<std::streamsize>::max());

void ReleaseDirectoryLocks();

bool TryCreateDirectories(const fs::path& p);
fs::path GetDefaultDataDir();

std::string PermsToSymbolicString(fs::perms p);
std::optional<fs::perms> InterpretPermString(const std::string& s);

#ifdef WIN32
fs::path GetSpecialFolderPath(int nFolder, bool fCreate = true);
#endif

#endif // BITCOIN_UTIL_FS_HELPERS_H