DCMD_F3S_UNITINFO

QNX SDP8.0Devctl and Ioctl CommandsDeveloper

Get information about a unit (erase sector)

Synopsis:

#include <sys/dcmd_f3s.h>

#define DCMD_F3S_UNITINFO  __DIOTF(_DCMD_F3S, F3S_UNITINFO, f3s_unitinfo_t)

Arguments to devctl():

Argument Value
filedes A file descriptor that you obtained by opening the device.
dcmd DCMD_F3S_UNITINFO
dev_data_ptr A pointer to a f3s_unitinfo_t (see below)
n_bytes sizeof(f3s_unitinfo_t)
dev_info_ptr NULL

Description:

This command gets information about a unit (erase sector).

Input:

A f3s_unitinfo_t structure: 

typedef struct f3s_unitinfo_s
{
  uint32_t status;       /* info status */
  uint32_t offset;       /* offset of unit in partition */
  uint32_t unit_size;    /* size of a unit expressed in bytes */
  uint32_t erase_count;  /* count of erasures on unit */
}
f3s_unitinfo_t;

Fill in the offset before calling devctl().

Output:

A f3s_unitinfo_t structure, filled in by the driver.

See also:

devctl() in the QNX OS C Library Reference

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