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Merge pull request #13548 from kvasdopil/zfs_magicnum

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ZFS filesystem magic number check is fixed on FreeBSD
This commit is contained in:
Alexander Morozov 2015-05-28 10:27:12 -07:00
commit b90732f801
4 changed files with 52 additions and 14 deletions
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13
daemon/graphdriver/zfs/zfs.go
View file

@ -116,19 +116,6 @@ func parseOptions(opt []string) (ZfsOptions, error) {
return options, nil
}
func checkRootdirFs(rootdir string) error {
var buf syscall.Statfs_t
if err := syscall.Statfs(rootdir, &buf); err != nil {
return fmt.Errorf("Failed to access '%s': %s", rootdir, err)
}
if graphdriver.FsMagic(buf.Type) != graphdriver.FsMagicZfs {
log.Debugf("[zfs] no zfs dataset found for rootdir '%s'", rootdir)
return graphdriver.ErrPrerequisites
}
return nil
}
func lookupZfsDataset(rootdir string) (string, error) {
var stat syscall.Stat_t
if err := syscall.Stat(rootdir, &stat); err != nil {

24
daemon/graphdriver/zfs/zfs_freebsd.go Normal file
View file

@ -0,0 +1,24 @@
package zfs
import (
"fmt"
"syscall"
log "github.com/Sirupsen/logrus"
"github.com/docker/docker/daemon/graphdriver"
)
func checkRootdirFs(rootdir string) error {
var buf syscall.Statfs_t
if err := syscall.Statfs(rootdir, &buf); err != nil {
return fmt.Errorf("Failed to access '%s': %s", rootdir, err)
}
// on FreeBSD buf.Fstypename contains ['z', 'f', 's', 0 ... ]
if (buf.Fstypename[0] != 122) || (buf.Fstypename[1] != 102) || (buf.Fstypename[2] != 115) || (buf.Fstypename[3] != 0) {
log.Debugf("[zfs] no zfs dataset found for rootdir '%s'", rootdir)
return graphdriver.ErrPrerequisites
}
return nil
}

23
daemon/graphdriver/zfs/zfs_linux.go Normal file
View file

@ -0,0 +1,23 @@
package zfs
import (
"fmt"
"syscall"
log "github.com/Sirupsen/logrus"
"github.com/docker/docker/daemon/graphdriver"
)
func checkRootdirFs(rootdir string) error {
var buf syscall.Statfs_t
if err := syscall.Statfs(rootdir, &buf); err != nil {
return fmt.Errorf("Failed to access '%s': %s", rootdir, err)
}
if graphdriver.FsMagic(buf.Type) != graphdriver.FsMagicZfs {
log.Debugf("[zfs] no zfs dataset found for rootdir '%s'", rootdir)
return graphdriver.ErrPrerequisites
}
return nil
}

6
daemon/graphdriver/zfs/zfs_unsupported.go
View file

@ -1,3 +1,7 @@
// +build !linux
// +build !linux,!freebsd
package zfs
func checkRootdirFs(rootdir string) error {
return nil
}