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Fix cgroup potential null pointer
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parent
a9733a4b7d
commit
3c77bf81d1
@ -24,7 +24,7 @@ func NewSubCgroup(p string) *SubCgroup {
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// WriteUint writes uint64 into given file
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// WriteUint writes uint64 into given file
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func (c *SubCgroup) WriteUint(filename string, i uint64) error {
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func (c *SubCgroup) WriteUint(filename string, i uint64) error {
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if c.path == "" {
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if c == nil || c.path == "" {
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return nil
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return nil
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}
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}
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return c.WriteFile(filename, []byte(strconv.FormatUint(i, 10)))
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return c.WriteFile(filename, []byte(strconv.FormatUint(i, 10)))
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@ -32,7 +32,7 @@ func (c *SubCgroup) WriteUint(filename string, i uint64) error {
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// ReadUint read uint64 from given file
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// ReadUint read uint64 from given file
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func (c *SubCgroup) ReadUint(filename string) (uint64, error) {
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func (c *SubCgroup) ReadUint(filename string) (uint64, error) {
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if c.path == "" {
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if c == nil || c.path == "" {
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return 0, ErrNotInitialized
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return 0, ErrNotInitialized
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}
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}
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b, err := c.ReadFile(filename)
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b, err := c.ReadFile(filename)
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@ -49,7 +49,7 @@ func (c *SubCgroup) ReadUint(filename string) (uint64, error) {
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// WriteFile writes cgroup file and handles potential EINTR error while writes to
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// WriteFile writes cgroup file and handles potential EINTR error while writes to
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// the slow device (cgroup)
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// the slow device (cgroup)
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func (c *SubCgroup) WriteFile(name string, content []byte) error {
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func (c *SubCgroup) WriteFile(name string, content []byte) error {
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if c.path == "" {
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if c == nil || c.path == "" {
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return ErrNotInitialized
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return ErrNotInitialized
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}
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}
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p := path.Join(c.path, name)
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p := path.Join(c.path, name)
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@ -63,7 +63,7 @@ func (c *SubCgroup) WriteFile(name string, content []byte) error {
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// ReadFile reads cgroup file and handles potential EINTR error while read to
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// ReadFile reads cgroup file and handles potential EINTR error while read to
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// the slow device (cgroup)
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// the slow device (cgroup)
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func (c *SubCgroup) ReadFile(name string) ([]byte, error) {
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func (c *SubCgroup) ReadFile(name string) ([]byte, error) {
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if c.path == "" {
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if c == nil || c.path == "" {
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return nil, nil
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return nil, nil
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}
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}
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p := path.Join(c.path, name)
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p := path.Join(c.path, name)
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