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Make btrfs call same interface as others

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Most storage drivers call graphdriver.GetFSMagic(home),
it is more clean to easy to maintain. So btrfs need to
adopt such change.

Signed-off-by: Kai Qiang Wu(Kennan) <wkqwu@cn.ibm.com>
This commit is contained in:
Kai Qiang Wu(Kennan) 2016-02-01 07:50:16 +00:00
parent 40ce2574b4
commit feda5d7684
1 changed files with 3 additions and 4 deletions
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7
daemon/graphdriver/btrfs/btrfs.go
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@ -31,14 +31,13 @@ func init() {
// Init returns a new BTRFS driver.
// An error is returned if BTRFS is not supported.
func Init(home string, options []string, uidMaps, gidMaps []idtools.IDMap) (graphdriver.Driver, error) {
rootdir := path.Dir(home)
var buf syscall.Statfs_t
if err := syscall.Statfs(rootdir, &buf); err != nil {
fsMagic, err := graphdriver.GetFSMagic(home)
if err != nil {
return nil, err
}
if graphdriver.FsMagic(buf.Type) != graphdriver.FsMagicBtrfs {
if fsMagic != graphdriver.FsMagicBtrfs {
return nil, graphdriver.ErrPrerequisites
}