25 lines
888 B
Go
25 lines
888 B
Go
// +build !windows
|
|
|
|
package replacefile
|
|
|
|
import (
|
|
"os"
|
|
)
|
|
|
|
// AtomicRename renames from the source path to the destination path,
|
|
// atomically replacing any file that might already exist at the destination.
|
|
//
|
|
// Typically this operation can succeed only if the source and destination
|
|
// are within the same physical filesystem, so this function is best reserved
|
|
// for cases where the source and destination exist in the same directory and
|
|
// only the local filename differs between them.
|
|
//
|
|
// The Unix implementation of AtomicRename relies on the atomicity of renaming
|
|
// that is required by the ISO C standard, which in turn assumes that Go's
|
|
// implementation of rename is calling into a system call that preserves that
|
|
// guarantee.
|
|
func AtomicRename(source, destination string) error {
|
|
// On Unix systems, a rename is sufficiently atomic.
|
|
return os.Rename(source, destination)
|
|
}
|