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moby--moby/pkg/loopback/loop_wrapper.go
Aaron Lehmann 85357a1167 Make pkg/devicemapper and pkg/loopback depend on cgo in build tags
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
2017-03-29 17:55:42 -07:00

52 lines
1.2 KiB
Go

// +build linux,cgo
package loopback
/*
#include <linux/loop.h> // FIXME: present only for defines, maybe we can remove it?
#ifndef LOOP_CTL_GET_FREE
#define LOOP_CTL_GET_FREE 0x4C82
#endif
#ifndef LO_FLAGS_PARTSCAN
#define LO_FLAGS_PARTSCAN 8
#endif
*/
import "C"
type loopInfo64 struct {
loDevice uint64 /* ioctl r/o */
loInode uint64 /* ioctl r/o */
loRdevice uint64 /* ioctl r/o */
loOffset uint64
loSizelimit uint64 /* bytes, 0 == max available */
loNumber uint32 /* ioctl r/o */
loEncryptType uint32
loEncryptKeySize uint32 /* ioctl w/o */
loFlags uint32 /* ioctl r/o */
loFileName [LoNameSize]uint8
loCryptName [LoNameSize]uint8
loEncryptKey [LoKeySize]uint8 /* ioctl w/o */
loInit [2]uint64
}
// IOCTL consts
const (
LoopSetFd = C.LOOP_SET_FD
LoopCtlGetFree = C.LOOP_CTL_GET_FREE
LoopGetStatus64 = C.LOOP_GET_STATUS64
LoopSetStatus64 = C.LOOP_SET_STATUS64
LoopClrFd = C.LOOP_CLR_FD
LoopSetCapacity = C.LOOP_SET_CAPACITY
)
// LOOP consts.
const (
LoFlagsAutoClear = C.LO_FLAGS_AUTOCLEAR
LoFlagsReadOnly = C.LO_FLAGS_READ_ONLY
LoFlagsPartScan = C.LO_FLAGS_PARTSCAN
LoKeySize = C.LO_KEY_SIZE
LoNameSize = C.LO_NAME_SIZE
)