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Merge pull request #6643 from kzys/freebsd-cp

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cp's -T and --reflink=auto are only available on GNU coreutils
This commit is contained in:
Victor Vieux 2014-06-24 14:29:18 -07:00
commit 6d8e95557c
1 changed files with 18 additions and 1 deletions
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19
daemon/graphdriver/vfs/driver.go
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@ -1,6 +1,7 @@
package vfs
import (
"bytes"
"fmt"
"github.com/dotcloud/docker/daemon/graphdriver"
"os"
@ -35,8 +36,24 @@ func (d *Driver) Cleanup() error {
return nil
}
func isGNUcoreutils() bool {
if stdout, err := exec.Command("cp", "--version").Output(); err == nil {
return bytes.Contains(stdout, []byte("GNU coreutils"))
}
return false
}
func copyDir(src, dst string) error {
if output, err := exec.Command("cp", "-aT", "--reflink=auto", src, dst).CombinedOutput(); err != nil {
argv := make([]string, 0, 4)
if isGNUcoreutils() {
argv = append(argv, "-aT", "--reflink=auto", src, dst)
} else {
argv = append(argv, "-a", src+"/.", dst+"/.")
}
if output, err := exec.Command("cp", argv...).CombinedOutput(); err != nil {
return fmt.Errorf("Error VFS copying directory: %s (%s)", err, output)
}
return nil