ceph-csi/vendor/github.com/prometheus/procfs/internal/util/readfile.go
dependabot[bot] ec242d4cc8 rebase: bump github.com/prometheus/client_golang from 1.12.2 to 1.14.0
Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.12.2 to 1.14.0.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/main/CHANGELOG.md)
- [Commits](https://github.com/prometheus/client_golang/compare/v1.12.2...v1.14.0)

---
updated-dependencies:
- dependency-name: github.com/prometheus/client_golang
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
2022-11-30 16:32:45 +00:00

38 lines
1.2 KiB
Go

// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"io"
"os"
)
// ReadFileNoStat uses io.ReadAll to read contents of entire file.
// This is similar to os.ReadFile but without the call to os.Stat, because
// many files in /proc and /sys report incorrect file sizes (either 0 or 4096).
// Reads a max file size of 1024kB. For files larger than this, a scanner
// should be used.
func ReadFileNoStat(filename string) ([]byte, error) {
const maxBufferSize = 1024 * 1024
f, err := os.Open(filename)
if err != nil {
return nil, err
}
defer f.Close()
reader := io.LimitReader(f, maxBufferSize)
return io.ReadAll(reader)
}