Documentation
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Index ¶
Constants ¶
const ( CmdCtlAdd = 0x4C80 CmdCtlRemove = 0x4C81 CmdCtlGetFree = 0x4C82 )
Loop control device IOCTL commands
Variables ¶
This section is empty.
Functions ¶
func GetMaxLoopDevices ¶
func GetMaxLoopDevices() int
GetMaxLoopDevices Return the maximum number of loop devices allowed
func GetStatusFromFd ¶
func GetStatusFromFd(fd uintptr) (*unix.LoopInfo64, error)
GetStatusFromFd gets info status about an opened loop device
func GetStatusFromPath ¶
func GetStatusFromPath(path string) (*unix.LoopInfo64, error)
GetStatusFromPath gets info status about a loop device from path
Types ¶
type Device ¶
type Device struct {
MaxLoopDevices int
Info *unix.LoopInfo64
// contains filtered or unexported fields
}
Device describes a loop device
func (*Device) AttachFromFile ¶
AttachFromFile attempts to find a suitable loop device to use for the specified image. It runs through /dev/loopXX, up to MaxLoopDevices to find a free loop device, or to share a loop device already associated to file (if shared loop devices are enabled). If a usable loop device is found, then loop.Fd is set and no error is returned. If a usable loop device is not found, and this is due to a transient EAGAIN / EBUSY error, then it will retry up to maxRetries times, retryInterval apart, before returning an error.
func (*Device) AttachFromPath ¶
AttachFromPath finds a free loop device, opens it, and stores file descriptor of opened image path
Source Files