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Fix keyring file missing after Vault restart #15946

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merged 4 commits into from Jun 15, 2022
Merged

Fix keyring file missing after Vault restart #15946

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907d237
Fix keyring file missing after Vault restart
shujun10086 Jun 11, 2022
a242cba
Create 15946.txt
shujun10086 Jun 11, 2022
29f71a3
Merge pull request #1 from shujun10086/shujun/fix_keyfile_missing
shujun10086 Jun 11, 2022
9759caa
Update 15946.txt
shujun10086 Jun 15, 2022
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3 changes: 3 additions & 0 deletions changelog/15946.txt
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@@ -0,0 +1,3 @@
```release-note:bug
core/seal: Fix possible keyring truncation when using the file backend.
```
11 changes: 8 additions & 3 deletions sdk/physical/file/file.go
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Expand Up @@ -242,8 +242,9 @@ func (b *FileBackend) PutInternal(ctx context.Context, entry *physical.Entry) er

// JSON encode the entry and write it
fullPath := filepath.Join(path, key)
tempPath := fullPath + ".temp"
f, err := os.OpenFile(
fullPath,
tempPath,
os.O_CREATE|os.O_TRUNC|os.O_WRONLY,
0o600)
if err != nil {
Expand All @@ -262,6 +263,10 @@ func (b *FileBackend) PutInternal(ctx context.Context, entry *physical.Entry) er
})
f.Close()
if encErr == nil {
err = os.Rename(tempPath, fullPath)
if err != nil {
return err
}
return nil
}

Expand All @@ -270,15 +275,15 @@ func (b *FileBackend) PutInternal(ctx context.Context, entry *physical.Entry) er
// See if we ended up with a zero-byte file and if so delete it, might be a
// case of disk being full but the file info is in metadata that is
// reserved.
fi, err := os.Stat(fullPath)
fi, err := os.Stat(tempPath)
if err != nil {
return encErr
}
if fi == nil {
return encErr
}
if fi.Size() == 0 {
os.Remove(fullPath)
os.Remove(tempPath)
}
return encErr
}
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