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move "link or copy" functionality to moxio

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and add a bit more logging for unexpected failures when closing files.
and make tests pass with a TMPDIR on a different filesystem than the testdata directory.
This commit is contained in:
Mechiel Lukkien
2023-07-23 12:15:29 +02:00
parent 4a4d337ab4
commit 3e9b4107fd
12 changed files with 165 additions and 144 deletions
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34
queue/queue.go
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@ -240,14 +240,9 @@ func Add(ctx context.Context, log *mlog.Log, senderAccount string, mailFrom, rcp
// Could be due to cross-filesystem rename. Users shouldn't configure their systems that way.
return 0, fmt.Errorf("move message into queue dir: %w", err)
}
} else if err := os.Link(msgFile.Name(), dst); err != nil {
// Assume file system does not support hardlinks. Copy it instead.
if err := writeFile(dst, &moxio.AtReader{R: msgFile}); err != nil {
return 0, fmt.Errorf("copying message to new file: %s", err)
}
}
if err := moxio.SyncDir(dstDir); err != nil {
} else if err := moxio.LinkOrCopy(log, dst, msgFile.Name(), nil, true); err != nil {
return 0, fmt.Errorf("linking/copying message to new file: %s", err)
} else if err := moxio.SyncDir(dstDir); err != nil {
return 0, fmt.Errorf("sync directory: %v", err)
}
@ -261,29 +256,6 @@ func Add(ctx context.Context, log *mlog.Log, senderAccount string, mailFrom, rcp
return qm.ID, nil
}
// write contents of r to new file dst, for delivering a message.
func writeFile(dst string, r io.Reader) error {
df, err := os.OpenFile(dst, os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0660)
if err != nil {
return fmt.Errorf("create: %w", err)
}
defer func() {
if df != nil {
err := df.Close()
xlog.Check(err, "closing file after failed write")
}
}()
if _, err := io.Copy(df, r); err != nil {
return fmt.Errorf("copy: %s", err)
} else if err := df.Sync(); err != nil {
return fmt.Errorf("sync: %s", err)
} else if err := df.Close(); err != nil {
return fmt.Errorf("close: %s", err)
}
df = nil
return nil
}
func formatIPDomain(d dns.IPDomain) string {
if len(d.IP) > 0 {
return "[" + d.IP.String() + "]"