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DIOCGPART(9r)

NAME

DIOCGPART - Disk: Returns information about a single disk partition

SYNOPSIS

#include <io/common/devio.h> #include <sys/ioctl.h> int ioctl( dev_t dev, register int DIOCGPART, caddr_t data, int flag );

DESCRIPTION

The DIOCGPART ioctl command returns information about a device and partition. This information is returned in a partinfo structure, which contains pointers to the disklabel and partition structures for a single partition on a disk. If the disk does not have a disk label, the DIOCGPART ioctl command returns EINVAL.

EXAMPLE

See Writing Device Drivers: Advanced Topics for an example of how a disk device driver implements the DIOCGPART command.

SEE ALSO

Data Structures: disklabel(9s)

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