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libct/cg/fscommon.GetCgroupParamString: use ReadFile

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1. Use own ReadFile wrapper instead of ioutils.ReadFile.
   This makes it use the security measures of ReadFile.

2. Improve doc.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
This commit is contained in:
Kir Kolyshkin
2020-09-22 19:50:36 -07:00
parent aac4d1f5c3
commit e76ac1c054
1 changed files with 3 additions and 3 deletions
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6
libcontainer/cgroups/fscommon/utils.go
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@@ -73,9 +73,9 @@ func GetCgroupParamUint(cgroupPath, cgroupFile string) (uint64, error) {
return res, nil return res, nil
} }
// Gets a string value from the specified cgroup file // GetCgroupParamString reads a string from the specified cgroup file.
func GetCgroupParamString(cgroupPath, cgroupFile string) (string, error) { func GetCgroupParamString(path, file string) (string, error) {
contents, err := ioutil.ReadFile(filepath.Join(cgroupPath, cgroupFile)) contents, err := ReadFile(path, file)
if err != nil { if err != nil {
return "", err return "", err
} }