diff options
Diffstat (limited to 'vendor/github.com/opencontainers/runc/libcontainer/cgroups/fs/utils.go')
-rw-r--r-- | vendor/github.com/opencontainers/runc/libcontainer/cgroups/fs/utils.go | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/vendor/github.com/opencontainers/runc/libcontainer/cgroups/fs/utils.go b/vendor/github.com/opencontainers/runc/libcontainer/cgroups/fs/utils.go deleted file mode 100644 index 5ff0a1615..000000000 --- a/vendor/github.com/opencontainers/runc/libcontainer/cgroups/fs/utils.go +++ /dev/null @@ -1,78 +0,0 @@ -// +build linux - -package fs - -import ( - "errors" - "fmt" - "io/ioutil" - "path/filepath" - "strconv" - "strings" -) - -var ( - ErrNotValidFormat = errors.New("line is not a valid key value format") -) - -// Saturates negative values at zero and returns a uint64. -// Due to kernel bugs, some of the memory cgroup stats can be negative. -func parseUint(s string, base, bitSize int) (uint64, error) { - value, err := strconv.ParseUint(s, base, bitSize) - if err != nil { - intValue, intErr := strconv.ParseInt(s, base, bitSize) - // 1. Handle negative values greater than MinInt64 (and) - // 2. Handle negative values lesser than MinInt64 - if intErr == nil && intValue < 0 { - return 0, nil - } else if intErr != nil && intErr.(*strconv.NumError).Err == strconv.ErrRange && intValue < 0 { - return 0, nil - } - - return value, err - } - - return value, nil -} - -// Parses a cgroup param and returns as name, value -// i.e. "io_service_bytes 1234" will return as io_service_bytes, 1234 -func getCgroupParamKeyValue(t string) (string, uint64, error) { - parts := strings.Fields(t) - switch len(parts) { - case 2: - value, err := parseUint(parts[1], 10, 64) - if err != nil { - return "", 0, fmt.Errorf("unable to convert param value (%q) to uint64: %v", parts[1], err) - } - - return parts[0], value, nil - default: - return "", 0, ErrNotValidFormat - } -} - -// Gets a single uint64 value from the specified cgroup file. -func getCgroupParamUint(cgroupPath, cgroupFile string) (uint64, error) { - fileName := filepath.Join(cgroupPath, cgroupFile) - contents, err := ioutil.ReadFile(fileName) - if err != nil { - return 0, err - } - - res, err := parseUint(strings.TrimSpace(string(contents)), 10, 64) - if err != nil { - return res, fmt.Errorf("unable to parse %q as a uint from Cgroup file %q", string(contents), fileName) - } - return res, nil -} - -// Gets a string value from the specified cgroup file -func getCgroupParamString(cgroupPath, cgroupFile string) (string, error) { - contents, err := ioutil.ReadFile(filepath.Join(cgroupPath, cgroupFile)) - if err != nil { - return "", err - } - - return strings.TrimSpace(string(contents)), nil -} |