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Extract ioctl from wrapper

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This commit is contained in:
Guillaume J. Charmes
2013-11-27 17:47:20 -08:00
parent eb528b959e
commit 1214b8897b
4 changed files with 99 additions and 113 deletions
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graphdriver/devmapper/devmapper.go
+9 -6
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@@ -178,15 +178,17 @@ func (t *Task) GetNextTarget(next uintptr) (nextPtr uintptr, start uint64,
}
func getLoopbackBackingFile(file *osFile) (uint64, uint64, error) {
dev, inode, err := DmGetLoopbackBackingFile(file.Fd())
if err != 0 {
loopInfo, err := ioctlLoopGetStatus64(file.Fd())
if err != nil {
utils.Errorf("Error get loopback backing file: %s\n", err)
return 0, 0, ErrGetLoopbackBackingFile
}
return dev, inode, nil
return loopInfo.loDevice, loopInfo.loInode, nil
}
func LoopbackSetCapacity(file *osFile) error {
if err := DmLoopbackSetCapacity(file.Fd()); err != 0 {
if err := ioctlLoopSetCapacity(file.Fd(), 0); err != nil {
utils.Errorf("Error loopbackSetCapacity: %s", err)
return ErrLoopbackSetCapacity
}
return nil
@@ -276,8 +278,9 @@ func RemoveDevice(name string) error {
}
func GetBlockDeviceSize(file *osFile) (uint64, error) {
size, errno := DmGetBlockSize(file.Fd())
if size == -1 || errno != 0 {
size, err := ioctlBlkGetSize64(file.Fd())
if err != nil {
utils.Errorf("Error getblockdevicesize: %s", err)
return 0, ErrGetBlockSize
}
return uint64(size), nil