std::string FS::readlink(std::string path) const
{
LowLevel::INode buf;
if (!this->retrievePathToINode(path, buf))
throw Exception::FileNotFound();
if (buf.type == LowLevel::INodeType::INT_SYMLINK)
{
// Read the link information out of the file.
FSFile* file = new FSFile(this->filesystem, this->stream, buf.inodeid);
file->open(std::ios_base::in);
char* buffer = (char*)malloc(buf.dat_len + 1);
std::streamsize count = file->read(buffer, buf.dat_len);
if (count < buf.dat_len)
buffer[count] = '\0';
else
buffer[buf.dat_len] = '\0';
std::string result = buffer;
free(buffer);
// Check to make sure it is valid.
if (count != buf.dat_len)
throw Exception::InternalInconsistency();
return result;
}
else
throw Exception::NotSupported();
}
int FuseLink::read(const char *path, char *out, size_t length,
off_t offset, struct fuse_file_info *options)
{
FuseLink::filesystem->setuid(fuse_get_context()->uid);
FuseLink::filesystem->setgid(fuse_get_context()->gid);
// Read data from the file.
try
{
if (offset > MSIZE_FILE || ((uint64_t) offset + (uint64_t) length) > MSIZE_FILE)
return -EFBIG;
FuseLink::filesystem->touch(path, "a");
FSFile file = FuseLink::filesystem->open(path);
file.seekg(offset);
uint32_t read = file.read(out, length);
file.close();
if (file.fail() || file.bad())
return -EIO;
return read;
}
catch (std::exception& e)
{
return FuseLink::handleException(e, "read");
}
}
void Media::add_cache(unsigned int id, FSFile & fp)
{
FileStream stream(fp);
AudioType type = (AudioType)stream.read_uint32();
if (type == NONE)
return;
unsigned int size = stream.read_uint32();
size_t pos = fp.tell();
bool is_wav = type == WAV;
SoundData * data;
if ((is_wav && size <= WAV_STREAM_THRESHOLD) ||
(!is_wav && size <= OGG_STREAM_THRESHOLD))
{
#ifdef CHOWDREN_IS_3DS
data = new SoundMemory(id, fp, type, size);
#else
unsigned char * sound_data = new unsigned char[size];
fp.read(sound_data, size);
data = new SoundMemory(id, sound_data, type, size);
delete[] sound_data;
#endif
} else {
data = new SoundCache(id, fp.tell(), type, size);
}
media.sounds[id] = data;
fp.seek(pos + size);
}