libcryfs/src/cryfs/impl/filesystem/cachingfsblobstore/FileBlobRef.h

58 lines
1.5 KiB
C++

#pragma once
#ifndef MESSMER_CRYFS_FILESYSTEM_CACHINGFSBLOBSTORE_FILEBLOBREF_H
#define MESSMER_CRYFS_FILESYSTEM_CACHINGFSBLOBSTORE_FILEBLOBREF_H
#include "FsBlobRef.h"
#include "cryfs/impl/filesystem/fsblobstore/FileBlob.h"
namespace cryfs {
namespace cachingfsblobstore {
class FileBlobRef final: public FsBlobRef {
public:
FileBlobRef(cpputils::unique_ref<fsblobstore::FileBlob> base, CachingFsBlobStore *fsBlobStore)
:FsBlobRef(std::move(base), fsBlobStore),
_base(dynamic_cast<fsblobstore::FileBlob*>(baseBlob())) {
ASSERT(_base != nullptr, "We just initialized this with a pointer to FileBlob. Can't be something else now.");
}
void resize(fspp::num_bytes_t size) {
return _base->resize(size);
}
fspp::num_bytes_t size() const {
return _base->size();
}
fspp::num_bytes_t read(void *target, fspp::num_bytes_t offset, fspp::num_bytes_t count) const {
return _base->read(target, offset, count);
}
void write(const void *source, fspp::num_bytes_t offset, fspp::num_bytes_t count) {
return _base->write(source, offset, count);
}
void flush() {
return _base->flush();
}
const blockstore::BlockId &blockId() const override {
return _base->blockId();
}
fspp::num_bytes_t lstat_size() const override {
return _base->lstat_size();
}
private:
fsblobstore::FileBlob *_base;
DISALLOW_COPY_AND_ASSIGN(FileBlobRef);
};
}
}
#endif