thin-provisioning-tools/base/file_utils.h

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#ifndef BASE_FILE_UTILS_H
#define BASE_FILE_UTILS_H
#include <string>
#include <sys/types.h>
#include <stdint.h>
//----------------------------------------------------------------
namespace file_utils {
struct file_descriptor {
// file_descriptor is movable but not copyable
file_descriptor(file_descriptor &&) = default;
file_descriptor& operator=(file_descriptor &&) = default;
file_descriptor(std::string const &path, int flags);
virtual ~file_descriptor();
int fd_;
};
bool file_exists(std::string const &path);
void check_file_exists(std::string const &file, bool must_be_regular_file = true);
file_descriptor create_block_file(std::string const &path, off_t file_size);
file_descriptor open_block_file(std::string const &path, off_t min_size, bool writeable, bool excl = true);
uint64_t get_file_length(std::string const &file);
void zero_superblock(std::string const &path);
}
//----------------------------------------------------------------
#endif