diff options
Diffstat (limited to 'pkg/spec')
| -rw-r--r-- | pkg/spec/config_linux_cgo.go | 12 | ||||
| -rw-r--r-- | pkg/spec/createconfig.go | 67 |
2 files changed, 68 insertions, 11 deletions
diff --git a/pkg/spec/config_linux_cgo.go b/pkg/spec/config_linux_cgo.go index c47156456..ae83c9d52 100644 --- a/pkg/spec/config_linux_cgo.go +++ b/pkg/spec/config_linux_cgo.go @@ -8,13 +8,24 @@ import ( spec "github.com/opencontainers/runtime-spec/specs-go" "github.com/pkg/errors" seccomp "github.com/seccomp/containers-golang" + "github.com/sirupsen/logrus" ) func getSeccompConfig(config *SecurityConfig, configSpec *spec.Spec) (*spec.LinuxSeccomp, error) { var seccompConfig *spec.LinuxSeccomp var err error + if config.SeccompPolicy == SeccompPolicyImage && config.SeccompProfileFromImage != "" { + logrus.Debug("Loading seccomp profile from the security config") + seccompConfig, err = seccomp.LoadProfile(config.SeccompProfileFromImage, configSpec) + if err != nil { + return nil, errors.Wrap(err, "loading seccomp profile failed") + } + return seccompConfig, nil + } + if config.SeccompProfilePath != "" { + logrus.Debugf("Loading seccomp profile from %q", config.SeccompProfilePath) seccompProfile, err := ioutil.ReadFile(config.SeccompProfilePath) if err != nil { return nil, errors.Wrapf(err, "opening seccomp profile (%s) failed", config.SeccompProfilePath) @@ -24,6 +35,7 @@ func getSeccompConfig(config *SecurityConfig, configSpec *spec.Spec) (*spec.Linu return nil, errors.Wrapf(err, "loading seccomp profile (%s) failed", config.SeccompProfilePath) } } else { + logrus.Debug("Loading default seccomp profile") seccompConfig, err = seccomp.GetDefaultProfile(configSpec) if err != nil { return nil, errors.Wrapf(err, "loading seccomp profile (%s) failed", config.SeccompProfilePath) diff --git a/pkg/spec/createconfig.go b/pkg/spec/createconfig.go index 244a8d1cd..827caacd6 100644 --- a/pkg/spec/createconfig.go +++ b/pkg/spec/createconfig.go @@ -2,6 +2,7 @@ package createconfig import ( "os" + "sort" "strconv" "strings" "syscall" @@ -106,19 +107,63 @@ type NetworkConfig struct { PublishAll bool //publish-all } +// SeccompPolicy determines which seccomp profile gets applied to the container. +type SeccompPolicy int + +const ( + // SeccompPolicyDefault - if set use SecurityConfig.SeccompProfilePath, + // otherwise use the default profile. The SeccompProfilePath might be + // explicitly set by the user. + SeccompPolicyDefault SeccompPolicy = iota + // SeccompPolicyImage - if set use SecurityConfig.SeccompProfileFromImage, + // otherwise follow SeccompPolicyDefault. + SeccompPolicyImage +) + +// Map for easy lookups of supported policies. +var supportedSeccompPolicies = map[string]SeccompPolicy{ + "": SeccompPolicyDefault, + "default": SeccompPolicyDefault, + "image": SeccompPolicyImage, +} + +// LookupSeccompPolicy looksup the corresponding SeccompPolicy for the specified +// string. If none is found, an errors is returned including the list of +// supported policies. +// Note that an empty string resolved to SeccompPolicyDefault. +func LookupSeccompPolicy(s string) (SeccompPolicy, error) { + policy, exists := supportedSeccompPolicies[s] + if exists { + return policy, nil + } + + // Sort the keys first as maps are non-deterministic. + keys := []string{} + for k := range supportedSeccompPolicies { + if k != "" { + keys = append(keys, k) + } + } + sort.Strings(keys) + + return -1, errors.Errorf("invalid seccomp policy %q: valid policies are %+q", s, keys) +} + // SecurityConfig configures the security features for the container type SecurityConfig struct { - CapAdd []string // cap-add - CapDrop []string // cap-drop - LabelOpts []string //SecurityOpts - NoNewPrivs bool //SecurityOpts - ApparmorProfile string //SecurityOpts - SeccompProfilePath string //SecurityOpts - SecurityOpts []string - Privileged bool //privileged - ReadOnlyRootfs bool //read-only - ReadOnlyTmpfs bool //read-only-tmpfs - Sysctl map[string]string //sysctl + CapAdd []string // cap-add + CapDrop []string // cap-drop + LabelOpts []string //SecurityOpts + NoNewPrivs bool //SecurityOpts + ApparmorProfile string //SecurityOpts + SeccompProfilePath string //SecurityOpts + SeccompProfileFromImage string // seccomp profile from the container image + SeccompPolicy SeccompPolicy + SecurityOpts []string + Privileged bool //privileged + ReadOnlyRootfs bool //read-only + ReadOnlyTmpfs bool //read-only-tmpfs + Sysctl map[string]string //sysctl } // CreateConfig is a pre OCI spec structure. It represents user input from varlink or the CLI |