| package procfs |
| |
| import ( |
| "fmt" |
| "os" |
| "path" |
| ) |
| |
| // FS represents the pseudo-filesystem proc, which provides an interface to |
| // kernel data structures. |
| type FS string |
| |
| // DefaultMountPoint is the common mount point of the proc filesystem. |
| const DefaultMountPoint = "/proc" |
| |
| // NewFS returns a new FS mounted under the given mountPoint. It will error |
| // if the mount point can't be read. |
| func NewFS(mountPoint string) (FS, error) { |
| info, err := os.Stat(mountPoint) |
| if err != nil { |
| return "", fmt.Errorf("could not read %s: %s", mountPoint, err) |
| } |
| if !info.IsDir() { |
| return "", fmt.Errorf("mount point %s is not a directory", mountPoint) |
| } |
| |
| return FS(mountPoint), nil |
| } |
| |
| // Path returns the path of the given subsystem relative to the procfs root. |
| func (fs FS) Path(p ...string) string { |
| return path.Join(append([]string{string(fs)}, p...)...) |
| } |