ClickHouse/src/Common/filesystemHelpers.h
2021-10-17 14:49:27 +00:00

55 lines
1.6 KiB
C++

#pragma once
#include <base/types.h>
#include <Common/Exception.h>
#include <filesystem>
#include <memory>
#include <string>
#include <sys/statvfs.h>
#include <Poco/TemporaryFile.h>
namespace DB
{
using TemporaryFile = Poco::TemporaryFile;
bool enoughSpaceInDirectory(const std::string & path, size_t data_size);
std::unique_ptr<TemporaryFile> createTemporaryFile(const std::string & path);
/// Returns mount point of filesystem where absolute_path (must exist) is located
std::filesystem::path getMountPoint(std::filesystem::path absolute_path);
/// Returns name of filesystem mounted to mount_point
#if !defined(__linux__)
[[noreturn]]
#endif
String getFilesystemName([[maybe_unused]] const String & mount_point);
struct statvfs getStatVFS(const String & path);
/// Returns true if path starts with prefix path
bool pathStartsWith(const std::filesystem::path & path, const std::filesystem::path & prefix_path);
/// Returns true if path starts with prefix path
bool pathStartsWith(const String & path, const String & prefix_path);
/// Same as pathStartsWith, but without canonization, i.e. allowed to check symlinks.
/// (Path is made absolute and normalized.)
bool fileOrSymlinkPathStartsWith(const String & path, const String & prefix_path);
}
namespace FS
{
bool createFile(const std::string & path);
bool canRead(const std::string & path);
bool canWrite(const std::string & path);
time_t getModificationTime(const std::string & path);
Poco::Timestamp getModificationTimestamp(const std::string & path);
void setModificationTime(const std::string & path, time_t time);
}