23 lines
383 B
Go
23 lines
383 B
Go
// +build linux,cgo
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package copy // import "github.com/docker/docker/daemon/graphdriver/copy"
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/*
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#include <linux/fs.h>
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#ifndef FICLONE
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#define FICLONE _IOW(0x94, 9, int)
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#endif
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*/
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import "C"
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import (
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"os"
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"golang.org/x/sys/unix"
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)
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func fiClone(srcFile, dstFile *os.File) error {
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_, _, err := unix.Syscall(unix.SYS_IOCTL, dstFile.Fd(), C.FICLONE, srcFile.Fd())
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return err
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}
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