/* device.h  -  Device accessCopyright 1992-1996 Werner Almesberger.Copyright 1999-2004 John Coffman.All rights reserved.Licensed under the terms contained in the file 'COPYING' in the source directory.*/#ifndef DEVICE_H#define DEVICE_H#include <sys/stat.h>typedef struct {    int fd;    struct stat st;    char *name;    int delete;} DEVICE;int dev_open(DEVICE *dev,int number,int flags);/* Searches /dev for a block device with the specified number. If no device   can be found, a temporary device is created. The device is opened with   the specified access mode and the file descriptor is returned. If flags   are -1, the device is not opened. */void dev_close(DEVICE *dev);/* Closes a device that has previously been opened by dev_open. If the device   had to be created, it is removed now. */void preload_dev_cache(void);/* Preloads the device number to name cache. */int make_backup(char *backup_file, int force_backup, BOOT_SECTOR *bsect,	int device, char *id);/* make a backup, returning the timestamp of the backup file */unsigned int register_bios(int bios, int device);/* registers the bios to device association by serial number */void dump_serial_nos(void);/* debugging dump of the Volume Serial number table */int serial_valid(unsigned int serial, int disk_bios);/* determine validity of serial number; liberally if disk_bios==0x80 */int pf_hard_disk_scan(void);/* scan /proc/partitions for devices & partitions */int yesno(char *prompt, int expect);/* prompt the user for a yes/no response */int new_serial(int device);/* generate a new volumeID */#endif