int file_main(char* ntfs_file, dis_context_t* dis_ctx)
{
// Check parameter
if(!ntfs_file)
{
xprintf(L_ERROR, "Error, empty string file. Abort.\n");
return EXIT_FAILURE;
}
if(!dis_ctx)
{
xprintf(L_ERROR, "Error, no context given. Abort.\n");
return EXIT_FAILURE;
}
dis_iodata_t io_data = dis_ctx->io_data;
size_t buf_size = (size_t)(NB_READ_SECTOR * io_data.sector_size);
uint8_t* buffer = xmalloc(buf_size);
mode_t mode = S_IRUSR|S_IWUSR;
if(dis_ctx->cfg.is_ro & READ_ONLY)
mode = S_IRUSR;
int fd_ntfs = xopen2(ntfs_file, O_CREAT|O_RDWR|O_LARGEFILE, mode);
off_t offset = 0;
long long int percent = 0;
xprintf(L_INFO, "File size: %llu bytes\n", io_data.volume_size);
/* Read all sectors and decrypt them if necessary */
xprintf(L_INFO, "\rDecrypting... 0%%");
fflush(stdout);
off_t decrypting_size = (off_t)io_data.volume_size;
while(offset < decrypting_size)
{
/* Read and decrypt an entire region of the disk */
dislock(dis_ctx, buffer, offset, buf_size);
offset += (off_t) buf_size;
/* Now copy the required amount of data to the user file */
xwrite(fd_ntfs, buffer, buf_size);
/* Screen update */
if(percent != (offset*100)/decrypting_size)
{
percent = (offset*100)/decrypting_size;
xprintf(L_INFO, "\rDecrypting... %lld%%", percent);
fflush(stdout);
}
}
xprintf(L_INFO, "\rDecrypting... Done.\n");
xfree(buffer);
xclose(fd_ntfs);
return EXIT_SUCCESS;
}
/**
* Waits for a FIFO to open on "the other side"
* Takes the pathname of the fifo and the flag with which open should open the fifo
* TODO review this
*/
void waitFifo(const char *pathname, int flags) {
// opens the fifo and closes it right after
xclose(xopen2(pathname, flags));
}
