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Let user create ZFS dataset manually due to security considerations

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This commit is contained in:
zyx 2019-03-31 12:09:42 +08:00
parent ff3e690497
commit 96cb975412
1 changed files with 24 additions and 16 deletions
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34
worker/zfs_hook.go
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@ -3,6 +3,7 @@ package worker
import (
"fmt"
"os"
"os/user"
"strings"
"github.com/codeskyblue/go-sh"
@ -21,25 +22,32 @@ func newZfsHook(provider mirrorProvider, zpool string) *zfsHook {
}
}
// create zfs dataset for a new mirror
func (z *zfsHook) printHelpMessage() {
zfsDataset := fmt.Sprintf("%s/%s", z.zpool, z.provider.Name())
zfsDataset = strings.ToLower(zfsDataset)
workingDir := z.provider.WorkingDir()
logger.Infof("You may create the ZFS dataset with:")
logger.Infof(" zfs create '%s'", zfsDataset)
logger.Infof(" zfs set mountpoint='%s' '%s'", workingDir, zfsDataset)
usr, err := user.Current()
if err != nil || usr.Uid == "0" {
return
}
logger.Infof(" chown %s '%s'", usr.Uid, workingDir)
}
// check if working directory is a zfs dataset
func (z *zfsHook) preJob() error {
workingDir := z.provider.WorkingDir()
if _, err := os.Stat(workingDir); os.IsNotExist(err) {
// sudo zfs create $zfsDataset
// sudo zfs set mountpoint=${absPath} ${zfsDataset}
zfsDataset := fmt.Sprintf("%s/%s", z.zpool, z.provider.Name())
// Unknown issue of ZFS:
// dataset name should not contain upper case letters
zfsDataset = strings.ToLower(zfsDataset)
logger.Infof("Creating ZFS dataset %s", zfsDataset)
if err := sh.Command("sudo", "zfs", "create", zfsDataset).Run(); err != nil {
logger.Errorf("Directory %s doesn't exist", workingDir);
z.printHelpMessage()
return err
}
logger.Infof("Mount ZFS dataset %s to %s", zfsDataset, workingDir)
if err := sh.Command("sudo", "zfs", "set", "mountpoint="+workingDir, zfsDataset).Run(); err != nil {
if err := sh.Command("mountpoint", "-q", workingDir).Run(); err != nil {
logger.Errorf("%s is not a mount point", workingDir);
z.printHelpMessage()
return err
}
}
return nil
}