forked from rook/rook
77 lines
2.0 KiB
Go
77 lines
2.0 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package sys
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import (
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"fmt"
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"os/exec"
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"strings"
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pkgexec "github.com/rook/rook/pkg/util/exec"
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)
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func getKernelVersion() (string, error) {
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var output []byte
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cmd := exec.Command("uname", "-r")
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output, err := cmd.Output()
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out := strings.TrimSpace(string(output))
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if err != nil {
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return out, err
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}
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return out, nil
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}
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func IsBuiltinKernelModule(name string, executor pkgexec.Executor) (bool, error) {
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kv, err := getKernelVersion()
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if err != nil {
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return false, fmt.Errorf("failed to get kernel version: %+v", err)
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}
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kv = fmt.Sprintf("/lib/modules/%s/modules.builtin", kv)
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out, err := executor.ExecuteCommandWithCombinedOutput("cat", kv)
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if err != nil {
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return false, fmt.Errorf("failed to cat %s: %+v", kv, err)
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}
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result := Grep(out, name)
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return result != "", nil
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}
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func LoadKernelModule(name string, options []string, executor pkgexec.Executor) error {
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if options == nil {
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options = []string{}
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}
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args := append([]string{name}, options...)
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if err := executor.ExecuteCommand("modprobe", args[:]...); err != nil {
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return fmt.Errorf("failed to load kernel module %s: %+v", name, err)
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}
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return nil
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}
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func CheckKernelModuleParam(name, param string, executor pkgexec.Executor) (bool, error) {
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out, err := executor.ExecuteCommandWithOutput("modinfo", "-F", "parm", name)
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if err != nil {
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return false, fmt.Errorf("failed to check for %s module %s param: %+v", name, param, err)
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}
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result := Grep(out, fmt.Sprintf("^%s", param))
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return result != "", nil
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}
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