DCMD_ETFS_ERASE

Erase a specified range in an embedded transaction filesystem

Synopsis:

#include <sys/dcmd_mem.h>

#define DCMD_ETFS_ERASE_RANGE     __DIOT(_DCMD_MEM, 106, struct etfs_erase_range)

Argument	Value
`filedes`	A file descriptor that you obtained by opening the filesystem partition, /dev/etfs2
`dcmd`	DCMD_ETFS_ERASE_RANGE
`dev_data_ptr`	A pointer to a struct etfs_erase_range
`n_bytes`	`sizeof(struct etfs_erase_range)`
`dev_info_ptr`	NULL

This command erases a specified range of the filesystem. You must be root or have the appropriate permissions to use this command.

A etfs_erase_range structure, which is defined as:

struct etfs_erase_range {
        int64_t         offset;
        int64_t         length;
};

The members include:

offset: The offset to start erasing at, in bytes.
length: The number of bytes to erase, or -1 to erase to the end of the partition.

None.

The devctl() function can return the following, in addition to the error codes listed in its entry in the C Library Reference:

EBUSY: There are open files in the filesystem.
EINVAL: The file descriptor doesn't correspond to the filesystem partition, /dev/etfs2.
EPERM: You don't have the required permissions.