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zfs: fix half-nil error reporting of dataset-does-not-exist for ZFSListChan and ZFSBookmark

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This commit is contained in:
Christian Schwarz 2020-04-06 12:48:35 +02:00
parent 7061282e08
commit ac2eb9f86b
1 changed files with 7 additions and 9 deletions
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16
zfs/zfs.go
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@ -276,14 +276,12 @@ func ZFSListChan(ctx context.Context, out chan ZFSListResult, properties []strin
}
if err := cmd.Wait(); err != nil {
if _, ok := err.(*exec.ExitError); ok {
enotexist := func() error {
if notExistHint == nil {
return nil
}
return tryDatasetDoesNotExist(notExistHint.ToString(), stderrBuf.Bytes())
var enotexist *DatasetDoesNotExist
if notExistHint != nil {
enotexist = tryDatasetDoesNotExist(notExistHint.ToString(), stderrBuf.Bytes())
}
if err := enotexist(); err != nil {
sendResult(nil, err)
if enotexist != nil {
sendResult(nil, enotexist)
} else {
sendResult(nil, &ZFSError{
Stderr: stderrBuf.Bytes(),
@ -1372,7 +1370,7 @@ type DatasetDoesNotExist struct {
func (d *DatasetDoesNotExist) Error() string { return fmt.Sprintf("dataset %q does not exist", d.Path) }
func tryDatasetDoesNotExist(expectPath string, stderr []byte) error {
func tryDatasetDoesNotExist(expectPath string, stderr []byte) *DatasetDoesNotExist {
if sm := zfsGetDatasetDoesNotExistRegexp.FindSubmatch(stderr); sm != nil {
if string(sm[1]) == expectPath {
return &DatasetDoesNotExist{expectPath}
@ -1650,7 +1648,7 @@ func ZFSBookmark(ctx context.Context, fs string, v ZFSSendArgVersion, bookmark s
cmd := zfscmd.CommandContext(ctx, ZFS_BINARY, "bookmark", snapname, bookmarkname)
stdio, err := cmd.CombinedOutput()
if err != nil {
if ddne := tryDatasetDoesNotExist(snapname, stdio); err != nil {
if ddne := tryDatasetDoesNotExist(snapname, stdio); ddne != nil {
return ddne
} else if zfsBookmarkExistsRegex.Match(stdio) {