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/*
* fdiskP.h - private library header file
*
* Copyright (C) 2012 Karel Zak <kzak@redhat.com>
*
* This file may be redistributed under the terms of the
* GNU Lesser General Public License.
*/
#ifndef _LIBFDISK_PRIVATE_H
#define _LIBFDISK_PRIVATE_H
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include "c.h"
#include "libfdisk.h"
/* features */
#define CONFIG_LIBFDISK_ASSERT
#define CONFIG_LIBFDISK_DEBUG
#ifdef CONFIG_LIBFDISK_ASSERT
#include <assert.h>
#endif
/*
* Debug
*/
#if defined(TEST_PROGRAM) && !defined(LIBFDISK_DEBUG)
#define CONFIG_LIBFDISK_DEBUG
#endif
#ifdef CONFIG_LIBFDISK_DEBUG
# include <stdio.h>
# include <stdarg.h>
/* fdisk debugging flags/options */
#define FDISK_DEBUG_INIT (1 << 1)
#define FDISK_DEBUG_CONTEXT (1 << 2)
#define FDISK_DEBUG_TOPOLOGY (1 << 3)
#define FDISK_DEBUG_GEOMETRY (1 << 4)
#define FDISK_DEBUG_LABEL (1 << 5)
#define FDISK_DEBUG_ALL 0xFFFF
# define ON_DBG(m, x) do { \
if ((FDISK_DEBUG_ ## m) & fdisk_debug_mask) { \
x; \
} \
} while (0)
# define DBG(m, x) do { \
if ((FDISK_DEBUG_ ## m) & fdisk_debug_mask) { \
fprintf(stderr, "%d: fdisk: %8s: ", getpid(), # m); \
x; \
} \
} while (0)
# define DBG_FLUSH do { \
if (fdisk_debug_mask && \
fdisk_debug_mask != FDISK_DEBUG_INIT) \
fflush(stderr); \
} while(0)
static inline void __attribute__ ((__format__ (__printf__, 1, 2)))
dbgprint(const char *mesg, ...)
{
va_list ap;
va_start(ap, mesg);
vfprintf(stderr, mesg, ap);
va_end(ap);
fputc('\n', stderr);
}
extern int fdisk_debug_mask;
#else /* !CONFIG_LIBFDISK_DEBUG */
# define ON_DBG(m,x) do { ; } while (0)
# define DBG(m,x) do { ; } while (0)
# define DBG_FLUSH do { ; } while(0)
#endif
typedef unsigned long long sector_t;
/*
* Supported partition table types (labels)
*/
enum fdisk_labeltype {
FDISK_DISKLABEL_DOS = 1,
FDISK_DISKLABEL_SUN = 2,
FDISK_DISKLABEL_SGI = 4,
FDISK_DISKLABEL_AIX = 8,
FDISK_DISKLABEL_OSF = 16,
FDISK_DISKLABEL_MAC = 32,
FDISK_DISKLABEL_GPT = 64,
FDISK_DISKLABEL_ANY = -1
};
/*
* Partition types
*/
struct fdisk_parttype {
unsigned int type; /* type as number or zero */
const char *name; /* description */
char *typestr; /* type as string or NULL */
unsigned int flags; /* FDISK_PARTTYPE_* flags */
};
enum {
FDISK_PARTTYPE_UNKNOWN = (1 << 1),
FDISK_PARTTYPE_INVISIBLE = (1 << 2),
FDISK_PARTTYPE_ALLOCATED = (1 << 3)
};
#define fdisk_parttype_is_unknown(_x) ((_x) && ((_x)->flags & FDISK_PARTTYPE_UNKNONW))
#define fdisk_parttype_is_invisible(_x) ((_x) && ((_x)->flags & FDISK_PARTTYPE_INVISIBLE))
#define fdisk_parttype_is_allocated(_x) ((_x) && ((_x)->flags & FDISK_PARTTYPE_ALLOCATED))
/*
* Legacy CHS based geometry
*/
struct fdisk_geometry {
unsigned int heads;
sector_t sectors;
sector_t cylinders;
};
struct fdisk_context {
int dev_fd; /* device descriptor */
char *dev_path; /* device path */
unsigned char *firstsector; /* buffer with master boot record */
/* topology */
unsigned long io_size; /* I/O size used by fdisk */
unsigned long optimal_io_size; /* optional I/O returned by device */
unsigned long min_io_size; /* minimal I/O size */
unsigned long phy_sector_size; /* physical size */
unsigned long sector_size; /* logical size */
unsigned long alignment_offset;
enum fdisk_labeltype disklabel; /* current disklabel */
/* alignment */
unsigned long grain; /* alignment unit */
sector_t first_lba; /* recommended begin of the first partition */
/* geometry */
sector_t total_sectors; /* in logical sectors */
struct fdisk_geometry geom;
/* label operations and description */
const struct fdisk_label *label;
};
#define fdisk_is_disklabel(c, x) fdisk_dev_is_disklabel(c, FDISK_DISKLABEL_ ## x)
/*
* Label specific operations
*/
struct fdisk_label {
const char *name;
/* array with partition types */
struct fdisk_parttype *parttypes;
size_t nparttypes; /* number of items in parttypes[] */
/* probe disk label */
int (*probe)(struct fdisk_context *cxt);
/* write in-memory changes to disk */
int (*write)(struct fdisk_context *cxt);
/* verify the partition table */
int (*verify)(struct fdisk_context *cxt);
/* create new disk label */
int (*create)(struct fdisk_context *cxt);
/* new partition */
int (*part_add)(struct fdisk_context *cxt, int partnum, struct fdisk_parttype *t);
/* delete partition */
int (*part_delete)(struct fdisk_context *cxt, int partnum);
/* get partition type */
struct fdisk_parttype *(*part_get_type)(struct fdisk_context *cxt, int partnum);
/* set partition type */
int (*part_set_type)(struct fdisk_context *cxt, int partnum, struct fdisk_parttype *t);
/* refresh alignment setting */
int (*reset_alignment)(struct fdisk_context *cxt);
};
#endif /* _LIBFDISK_PRIVATE_H */
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