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- // +build linux,cgo
- 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
- }
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