1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
// +build linux
package devicemapper
import (
"syscall"
"unsafe"
)
func ioctlBlkGetSize64(fd uintptr) (int64, error) {
var size int64
if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, BlkGetSize64, uintptr(unsafe.Pointer(&size))); err != 0 {
return 0, err
}
return size, nil
}
func ioctlBlkDiscard(fd uintptr, offset, length uint64) error {
var r [2]uint64
r[0] = offset
r[1] = length
if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, BlkDiscard, uintptr(unsafe.Pointer(&r[0]))); err != 0 {
return err
}
return nil
}
|
