Field: libfdisk Reference Manual

Functions

int	fdisk_field_get_id ()
const char *	fdisk_field_get_name ()
double	fdisk_field_get_width ()
int	fdisk_field_is_number ()

Types and Values

struct	fdisk_field
enum	fdisk_fieldtype

Description

The fdisk fields are static user-friendly descriptions of the partition. The fields are used to avoid label specific stuff in the functions that list disk partitions (e.g. fdisk -l). The field Id is the same as Id for fdisk_partition_to_string().

int *ids;
size_t nids;
struct fdisk_partition *pa = NULL;
struct fdisk_label *lb = fdisk_get_label(cxt, NULL);

fdisk_label_get_fields_ids(lb, cxt, &ids, &nids);

fdisk_get_partition(cxt, 0, &pa);

for (i = 0; i < nids; i++) {
const struct fdisk_field *field = fdisk_label_get_field(lb, ids[i]);

int id = fdisk_field_get_id(fl);
const char *name = fdisk_field_get_name(fl);
char *data;

fdisk_partition_to_string(pa, id, &data);
printf("%s: %s\n", name, data);
free(data);
}
free(ids);

This example lists all information about the first partition. It will work for MBR as well as for GPT because fields are not hardcoded in the example.

Functions

fdisk_field_get_id ()

int
fdisk_field_get_id (const struct fdisk_field *field);

Parameters

field

field instance

Returns

field Id (FDISK_FIELD_*)

fdisk_field_get_name ()

const char *
fdisk_field_get_name (const struct fdisk_field *field);

Parameters

field

field instance

Returns

field name

fdisk_field_get_width ()

double
fdisk_field_get_width (const struct fdisk_field *field);

Parameters

field

field instance

Returns

libsmartcols compatible width.

fdisk_field_is_number ()

int
fdisk_field_is_number (const struct fdisk_field *field);

Parameters

field

field instance

Returns

1 if field represent number

Types and Values

struct fdisk_field

struct fdisk_field;

Output field description.

enum fdisk_fieldtype

Types of fdisk_field. The fields describe a partition.

Members

FDISK_FIELD_NONE	unspecified item
FDISK_FIELD_DEVICE	partition device name
FDISK_FIELD_START	start offset of the partition
FDISK_FIELD_END	end offset of the partition
FDISK_FIELD_SECTORS	number of sectors
FDISK_FIELD_CYLINDERS	number of cylinders (deprecated)
FDISK_FIELD_SIZE	partition size
FDISK_FIELD_TYPE	partition type
FDISK_FIELD_TYPEID	partition type ID
FDISK_FIELD_ATTR	partition attribute (GPT)
FDISK_FIELD_BOOT	partition boot flag
FDISK_FIELD_BSIZE	size of the boot area (BSD)
FDISK_FIELD_CPG	BSD
FDISK_FIELD_EADDR	End-C/H/S (MBR)
FDISK_FIELD_FSIZE	BSD
FDISK_FIELD_NAME	partition label/name
FDISK_FIELD_SADDR	Start-C/H/S (MBR)
FDISK_FIELD_UUID	partition UUID (GPT)
FDISK_FIELD_FSUUID	Filesystem UUID
FDISK_FIELD_FSLABEL	Filesystem LABEL
FDISK_FIELD_FSTYPE	Filesystem type
FDISK_NFIELDS	Don't use, counter.