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* Adding explicit MPL license for sub-package This directory and its subdirectories (packages) contain files licensed with the MPLv2 `LICENSE` file in this directory and are intentionally licensed separately from the BSL `LICENSE` file at the root of this repository. * Adding explicit MPL license for sub-package This directory and its subdirectories (packages) contain files licensed with the MPLv2 `LICENSE` file in this directory and are intentionally licensed separately from the BSL `LICENSE` file at the root of this repository. * Updating the license from MPL to Business Source License Going forward, this project will be licensed under the Business Source License v1.1. Please see our blog post for more details at <Blog URL>, FAQ at www.hashicorp.com/licensing-faq, and details of the license at www.hashicorp.com/bsl. * add missing license headers * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 * Update copyright file headers to BUSL-1.1 --------- Co-authored-by: hashicorp-copywrite[bot] <110428419+hashicorp-copywrite[bot]@users.noreply.github.com>
55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package file
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import (
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"fmt"
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"os"
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"path/filepath"
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"github.com/hashicorp/go-uuid"
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)
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// WriteAtomic writes the given contents to a temporary file in the same
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// directory, does an fsync and then renames the file to its real path
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func WriteAtomic(path string, contents []byte) error {
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return WriteAtomicWithPerms(path, contents, 0700, 0600)
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}
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func WriteAtomicWithPerms(path string, contents []byte, dirPerms, filePerms os.FileMode) error {
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uuid, err := uuid.GenerateUUID()
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if err != nil {
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return err
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}
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tempPath := fmt.Sprintf("%s-%s.tmp", path, uuid)
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if err := os.MkdirAll(filepath.Dir(path), dirPerms); err != nil {
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return err
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}
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fh, err := os.OpenFile(tempPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, filePerms)
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if err != nil {
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return err
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}
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if _, err := fh.Write(contents); err != nil {
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fh.Close()
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os.Remove(tempPath)
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return err
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}
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if err := fh.Sync(); err != nil {
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fh.Close()
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os.Remove(tempPath)
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return err
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}
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if err := fh.Close(); err != nil {
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os.Remove(tempPath)
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return err
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}
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if err := os.Rename(tempPath, path); err != nil {
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os.Remove(tempPath)
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return err
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}
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return nil
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}
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