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https://github.com/VictoriaMetrics/VictoriaMetrics.git
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d5c180e680
It is better developing vmctl tool in VictoriaMetrics repository, so it could be released together with the rest of vmutils tools such as vmalert, vmagent, vmbackup, vmrestore and vmauth.
39 lines
1.2 KiB
Go
39 lines
1.2 KiB
Go
// Copyright 2019 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package util
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import (
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"io"
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"io/ioutil"
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"os"
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)
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// ReadFileNoStat uses ioutil.ReadAll to read contents of entire file.
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// This is similar to ioutil.ReadFile but without the call to os.Stat, because
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// many files in /proc and /sys report incorrect file sizes (either 0 or 4096).
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// Reads a max file size of 512kB. For files larger than this, a scanner
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// should be used.
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func ReadFileNoStat(filename string) ([]byte, error) {
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const maxBufferSize = 1024 * 512
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f, err := os.Open(filename)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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reader := io.LimitReader(f, maxBufferSize)
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return ioutil.ReadAll(reader)
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}
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