diff options
Diffstat (limited to 'server/apparmor/apparmor_supported.go')
-rw-r--r-- | server/apparmor/apparmor_supported.go | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/server/apparmor/apparmor_supported.go b/server/apparmor/apparmor_supported.go deleted file mode 100644 index d765c9de9..000000000 --- a/server/apparmor/apparmor_supported.go +++ /dev/null @@ -1,145 +0,0 @@ -// +build apparmor - -package apparmor - -import ( - "bufio" - "fmt" - "io" - "io/ioutil" - "os" - "path" - "strings" - - "github.com/docker/docker/utils/templates" - "github.com/opencontainers/runc/libcontainer/apparmor" -) - -const ( - // profileDirectory is the file store for apparmor profiles and macros. - profileDirectory = "/etc/apparmor.d" -) - -// profileData holds information about the given profile for generation. -type profileData struct { - // Name is profile name. - Name string - // Imports defines the apparmor functions to import, before defining the profile. - Imports []string - // InnerImports defines the apparmor functions to import in the profile. - InnerImports []string - // Version is the {major, minor, patch} version of apparmor_parser as a single number. - Version int -} - -// EnsureDefaultApparmorProfile loads default apparmor profile, if it is not loaded. -func EnsureDefaultApparmorProfile() error { - if apparmor.IsEnabled() { - loaded, err := IsLoaded(DefaultApparmorProfile) - if err != nil { - return fmt.Errorf("Could not check if %s AppArmor profile was loaded: %s", DefaultApparmorProfile, err) - } - - // Nothing to do. - if loaded { - return nil - } - - // Load the profile. - if err := InstallDefault(DefaultApparmorProfile); err != nil { - return fmt.Errorf("AppArmor enabled on system but the %s profile could not be loaded.", DefaultApparmorProfile) - } - } - - return nil -} - -// IsEnabled returns true if apparmor is enabled for the host. -func IsEnabled() bool { - return apparmor.IsEnabled() -} - -// GetProfileNameFromPodAnnotations gets the name of the profile to use with container from -// pod annotations -func GetProfileNameFromPodAnnotations(annotations map[string]string, containerName string) string { - return annotations[ContainerAnnotationKeyPrefix+containerName] -} - -// InstallDefault generates a default profile in a temp directory determined by -// os.TempDir(), then loads the profile into the kernel using 'apparmor_parser'. -func InstallDefault(name string) error { - p := profileData{ - Name: name, - } - - // Install to a temporary directory. - f, err := ioutil.TempFile("", name) - if err != nil { - return err - } - defer f.Close() - - if err := p.generateDefault(f); err != nil { - return err - } - - return LoadProfile(f.Name()) -} - -// IsLoaded checks if a profile with the given name has been loaded into the -// kernel. -func IsLoaded(name string) (bool, error) { - file, err := os.Open("/sys/kernel/security/apparmor/profiles") - if err != nil { - return false, err - } - defer file.Close() - - r := bufio.NewReader(file) - for { - p, err := r.ReadString('\n') - if err == io.EOF { - break - } - if err != nil { - return false, err - } - if strings.HasPrefix(p, name+" ") { - return true, nil - } - } - - return false, nil -} - -// generateDefault creates an apparmor profile from ProfileData. -func (p *profileData) generateDefault(out io.Writer) error { - compiled, err := templates.NewParse("apparmor_profile", baseTemplate) - if err != nil { - return err - } - - if macroExists("tunables/global") { - p.Imports = append(p.Imports, "#include <tunables/global>") - } else { - p.Imports = append(p.Imports, "@{PROC}=/proc/") - } - - if macroExists("abstractions/base") { - p.InnerImports = append(p.InnerImports, "#include <abstractions/base>") - } - - ver, err := GetVersion() - if err != nil { - return err - } - p.Version = ver - - return compiled.Execute(out, p) -} - -// macrosExists checks if the passed macro exists. -func macroExists(m string) bool { - _, err := os.Stat(path.Join(profileDirectory, m)) - return err == nil -} |