/* vi: set sw=4 ts=4: *//* * getsectsize.c --- get the sector size of a device. * * Copyright (C) 1995, 1995 Theodore Ts'o. * Copyright (C) 2003 VMware, Inc. * * %Begin-Header% * This file may be redistributed under the terms of the GNU Public * License. * %End-Header% */#include <stdio.h>#if HAVE_UNISTD_H#include <unistd.h>#endif#if HAVE_ERRNO_H#include <errno.h>#endif#include <fcntl.h>#ifdef HAVE_LINUX_FD_H#include <sys/ioctl.h>#include <linux/fd.h>#endif#if defined(__linux__) && defined(_IO) && !defined(BLKSSZGET)#define BLKSSZGET  _IO(0x12,104)/* get block device sector size */#endif#include "ext2_fs.h"#include "ext2fs.h"/* * Returns the number of blocks in a partition */errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize){	int	fd;#ifdef CONFIG_LFS	fd = open64(file, O_RDONLY);#else	fd = open(file, O_RDONLY);#endif	if (fd < 0)		return errno;#ifdef BLKSSZGET	if (ioctl(fd, BLKSSZGET, sectsize) >= 0) {		close(fd);		return 0;	}#endif	*sectsize = 0;	close(fd);	return 0;}