156 lines
3.8 KiB
C++
156 lines
3.8 KiB
C++
#include "../cryfs_lib/CryDevice.h"
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#include <memory>
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#include <fcntl.h>
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#include "CryDir.h"
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#include "CryFile.h"
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#include "CryOpenFile.h"
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#include "CryErrnoException.h"
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#include "utils/pointer.h"
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#include "CryOpenDir.h"
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using namespace cryfs;
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using std::unique_ptr;
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using std::make_unique;
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using std::vector;
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using std::string;
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CryDevice::CryDevice(const bf::path &rootdir)
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:_rootdir(rootdir), _open_files(), _open_dirs() {
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}
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CryDevice::~CryDevice() {
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}
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unique_ptr<CryNode> CryDevice::Load(const bf::path &path) {
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auto real_path = RootDir() / path;
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if(bf::is_directory(real_path)) {
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return make_unique<CryDir>(this, path);
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} else if(bf::is_regular_file(real_path)) {
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return make_unique<CryFile>(this, path);
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}
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throw CryErrnoException(ENOENT);
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}
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unique_ptr<CryFile> CryDevice::LoadFile(const bf::path &path) {
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auto node = Load(path);
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auto file = dynamic_pointer_move<CryFile>(node);
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if (!file) {
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throw CryErrnoException(EISDIR);
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}
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return file;
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}
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unique_ptr<CryDir> CryDevice::LoadDir(const bf::path &path) {
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auto node = Load(path);
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auto dir = dynamic_pointer_move<CryDir>(node);
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if (!dir) {
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throw CryErrnoException(ENOTDIR);
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}
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return dir;
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}
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int CryDevice::openFile(const bf::path &path, int flags) {
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auto file = LoadFile(path);
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return openFile(*file, flags);
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}
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int CryDevice::openFile(const CryFile &file, int flags) {
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return _open_files.open(file, flags);
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}
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void CryDevice::closeFile(int descriptor) {
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_open_files.close(descriptor);
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}
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void CryDevice::lstat(const bf::path &path, struct ::stat *stbuf) {
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Load(path)->stat(stbuf);
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}
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void CryDevice::fstat(int descriptor, struct ::stat *stbuf) {
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_open_files.get(descriptor)->stat(stbuf);
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}
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void CryDevice::truncate(const bf::path &path, off_t size) {
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LoadFile(path)->truncate(size);
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}
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void CryDevice::ftruncate(int descriptor, off_t size) {
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_open_files.get(descriptor)->truncate(size);
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}
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int CryDevice::read(int descriptor, void *buf, size_t count, off_t offset) {
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return _open_files.get(descriptor)->read(buf, count, offset);
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}
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void CryDevice::write(int descriptor, const void *buf, size_t count, off_t offset) {
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_open_files.get(descriptor)->write(buf, count, offset);
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}
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void CryDevice::fsync(int descriptor) {
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_open_files.get(descriptor)->fsync();
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}
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void CryDevice::fdatasync(int descriptor) {
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_open_files.get(descriptor)->fdatasync();
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}
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void CryDevice::access(const bf::path &path, int mask) {
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Load(path)->access(mask);
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}
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int CryDevice::createAndOpenFile(const bf::path &path, mode_t mode) {
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//TODO Creating the file opens and closes it. We then reopen it afterwards.
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// This is slow. Improve!
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auto dir = LoadDir(path.parent_path());
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auto file = dir->createFile(path.filename().native(), mode);
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return openFile(*file, O_CREAT | O_WRONLY | O_TRUNC);
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}
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void CryDevice::mkdir(const bf::path &path, mode_t mode) {
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auto dir = LoadDir(path.parent_path());
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dir->createDir(path.filename().native(), mode);
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}
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void CryDevice::rmdir(const bf::path &path) {
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auto dir = LoadDir(path);
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dir->rmdir();
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}
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void CryDevice::unlink(const bf::path &path) {
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auto file = LoadFile(path);
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file->unlink();
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}
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void CryDevice::rename(const bf::path &from, const bf::path &to) {
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auto node = Load(from);
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node->rename(to);
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}
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int CryDevice::openDir(const bf::path &path) {
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auto dir = LoadDir(path);
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return _open_dirs.open(*dir);
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}
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unique_ptr<vector<string>> CryDevice::readDir(int descriptor) {
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return _open_dirs.get(descriptor)->readdir();
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}
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void CryDevice::closeDir(int descriptor) {
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_open_dirs.close(descriptor);
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}
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void CryDevice::utimens(const bf::path &path, const timespec times[2]) {
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auto node = Load(path);
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node->utimens(times);
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}
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void CryDevice::statfs(const bf::path &path, struct statvfs *fsstat) {
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int retval = ::statvfs(path.c_str(), fsstat);
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CHECK_RETVAL(retval);
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}
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