/*

 * utils - miscellaneous I/O utilities for cryptsetup

 *

 * Copyright (C) 2004 Jana Saout <jana@saout.de>

 * Copyright (C) 2004-2007 Clemens Fruhwirth <clemens@endorphin.org>

 * Copyright (C) 2009-2020 Red Hat, Inc. All rights reserved.

 * Copyright (C) 2009-2020 Milan Broz

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

 */

#ifndef _CRYPTSETUP_UTILS_IO_H

#define _CRYPTSETUP_UTILS_IO_H

#include <sys/types.h>

ssize_t read_buffer(int fd, void *buf, size_t length);

ssize_t read_buffer_intr(int fd, void *buf, size_t length, volatile int *quit);

ssize_t write_buffer(int fd, const void *buf, size_t length);

ssize_t write_buffer_intr(int fd, const void *buf, size_t length, volatile int *quit);

ssize_t write_blockwise(int fd, size_t bsize, size_t alignment,

			void *orig_buf, size_t length);

ssize_t read_blockwise(int fd, size_t bsize, size_t alignment,

		       void *orig_buf, size_t length);

ssize_t write_lseek_blockwise(int fd, size_t bsize, size_t alignment,

			      void *buf, size_t length, off_t offset);

ssize_t read_lseek_blockwise(int fd, size_t bsize, size_t alignment,

			     void *buf, size_t length, off_t offset);

#endif