b20761cea0
* Removed error code logic and replaced with library function * Added the gosecignore comment to prevent gosec failing
73 lines
2.0 KiB
Go
73 lines
2.0 KiB
Go
/*
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© Copyright IBM Corporation 2017, 2018
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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 command contains code to run external commands
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package command
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import (
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"fmt"
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"os/exec"
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"os/user"
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"strconv"
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"syscall"
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)
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// Run runs an OS command. On Linux it waits for the command to
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// complete and returns the exit status (return code).
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// Do not use this function to run shell built-ins (like "cd"), because
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// the error handling works differently
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func Run(name string, arg ...string) (string, int, error) {
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// Run the command and wait for completion
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// #nosec G204
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cmd := exec.Command(name, arg...)
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out, err := cmd.CombinedOutput()
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rc := cmd.ProcessState.ExitCode()
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if err != nil {
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return string(out), rc, fmt.Errorf("%v: %v", cmd.Path, err)
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}
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return string(out), rc, nil
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}
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// RunAsMQM runs the specified command as the mqm user
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func RunAsMQM(name string, arg ...string) (string, int, error) {
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// #nosec G204
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cmd := exec.Command(name, arg...)
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cmd.SysProcAttr = &syscall.SysProcAttr{}
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uid, gid, err := LookupMQM()
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if err != nil {
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return "", 0, err
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}
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cmd.SysProcAttr.Credential = &syscall.Credential{Uid: uint32(uid), Gid: uint32(gid)}
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return Run(name, arg...)
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}
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// LookupMQM looks up the UID & GID of the mqm user
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func LookupMQM() (int, int, error) {
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mqm, err := user.Lookup("mqm")
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if err != nil {
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return -1, -1, err
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}
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mqmUID, err := strconv.Atoi(mqm.Uid)
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if err != nil {
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return -1, -1, err
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}
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mqmGID, err := strconv.Atoi(mqm.Gid)
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if err != nil {
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return -1, -1, err
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}
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return mqmUID, mqmGID, nil
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}
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