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Fix the err info of utils.ExecCmd

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Signed-off-by: Haiyan Meng <haiyanalady@gmail.com>
This commit is contained in:
Haiyan Meng 2016-08-08 14:58:41 -04:00 committed by Mrunal Patel
parent f569f04154
commit e3a34aa26d
1 changed files with 8 additions and 4 deletions
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12
utils/utils.go
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@ -2,7 +2,9 @@ package utils
import (
"bytes"
"fmt"
"os/exec"
"strings"
"syscall"
)
@ -10,15 +12,17 @@ const PR_SET_CHILD_SUBREAPER = 36
func ExecCmd(name string, args ...string) (string, error) {
cmd := exec.Command(name, args...)
var out bytes.Buffer
cmd.Stdout = &out
var stdout bytes.Buffer
var stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
err := cmd.Run()
if err != nil {
return "", err
return "", fmt.Errorf("`%v %v` failed: %v (%v)", name, strings.Join(args, " "), stderr.String(), err)
}
return out.String(), nil
return stdout.String(), nil
}
// SetSubreaper sets the value i as the subreaper setting for the calling process