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131 lines
3.5 KiB
131 lines
3.5 KiB
// 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 procfs
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"strconv"
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"strings"
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"github.com/prometheus/procfs/internal/util"
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)
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// Crypto holds info parsed from /proc/crypto.
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type Crypto struct {
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Alignmask *uint64
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Async bool
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Blocksize *uint64
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Chunksize *uint64
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Ctxsize *uint64
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Digestsize *uint64
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Driver string
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Geniv string
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Internal string
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Ivsize *uint64
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Maxauthsize *uint64
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MaxKeysize *uint64
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MinKeysize *uint64
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Module string
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Name string
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Priority *int64
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Refcnt *int64
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Seedsize *uint64
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Selftest string
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Type string
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Walksize *uint64
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}
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// Crypto parses an crypto-file (/proc/crypto) and returns a slice of
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// structs containing the relevant info. More information available here:
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// https://kernel.readthedocs.io/en/sphinx-samples/crypto-API.html
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func (fs FS) Crypto() ([]Crypto, error) {
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data, err := ioutil.ReadFile(fs.proc.Path("crypto"))
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if err != nil {
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return nil, fmt.Errorf("error parsing crypto %s: %s", fs.proc.Path("crypto"), err)
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}
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crypto, err := parseCrypto(data)
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if err != nil {
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return nil, fmt.Errorf("error parsing crypto %s: %s", fs.proc.Path("crypto"), err)
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}
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return crypto, nil
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}
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func parseCrypto(cryptoData []byte) ([]Crypto, error) {
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crypto := []Crypto{}
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cryptoBlocks := bytes.Split(cryptoData, []byte("\n\n"))
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for _, block := range cryptoBlocks {
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var newCryptoElem Crypto
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lines := strings.Split(string(block), "\n")
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for _, line := range lines {
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if strings.TrimSpace(line) == "" || line[0] == ' ' {
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continue
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}
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fields := strings.Split(line, ":")
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key := strings.TrimSpace(fields[0])
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value := strings.TrimSpace(fields[1])
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vp := util.NewValueParser(value)
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switch strings.TrimSpace(key) {
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case "async":
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b, err := strconv.ParseBool(value)
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if err == nil {
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newCryptoElem.Async = b
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}
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case "blocksize":
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newCryptoElem.Blocksize = vp.PUInt64()
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case "chunksize":
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newCryptoElem.Chunksize = vp.PUInt64()
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case "digestsize":
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newCryptoElem.Digestsize = vp.PUInt64()
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case "driver":
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newCryptoElem.Driver = value
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case "geniv":
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newCryptoElem.Geniv = value
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case "internal":
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newCryptoElem.Internal = value
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case "ivsize":
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newCryptoElem.Ivsize = vp.PUInt64()
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case "maxauthsize":
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newCryptoElem.Maxauthsize = vp.PUInt64()
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case "max keysize":
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newCryptoElem.MaxKeysize = vp.PUInt64()
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case "min keysize":
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newCryptoElem.MinKeysize = vp.PUInt64()
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case "module":
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newCryptoElem.Module = value
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case "name":
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newCryptoElem.Name = value
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case "priority":
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newCryptoElem.Priority = vp.PInt64()
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case "refcnt":
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newCryptoElem.Refcnt = vp.PInt64()
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case "seedsize":
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newCryptoElem.Seedsize = vp.PUInt64()
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case "selftest":
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newCryptoElem.Selftest = value
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case "type":
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newCryptoElem.Type = value
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case "walksize":
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newCryptoElem.Walksize = vp.PUInt64()
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}
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}
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crypto = append(crypto, newCryptoElem)
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}
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return crypto, nil
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}
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