435c0d9fc8
This PR switches the Nomad repository from using govendor to Go modules for managing dependencies. Aspects of the Nomad workflow remain pretty much the same. The usual Makefile targets should continue to work as they always did. The API submodule simply defers to the parent Nomad version on the repository, keeping the semantics of API versioning that currently exists.
132 lines
3.5 KiB
Go
132 lines
3.5 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 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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