github.com/containers/podman/v4@v4.9.4/pkg/seccomp/seccomp.go (about)

     1  package seccomp
     2  
     3  import (
     4  	"fmt"
     5  	"sort"
     6  )
     7  
     8  // ContainerImageLabel is the key of the image annotation embedding a seccomp
     9  // profile.
    10  const ContainerImageLabel = "io.containers.seccomp.profile"
    11  
    12  // Policy denotes a seccomp policy.
    13  type Policy int
    14  
    15  const (
    16  	// PolicyDefault - if set use SecurityConfig.SeccompProfilePath,
    17  	// otherwise use the default profile.  The SeccompProfilePath might be
    18  	// explicitly set by the user.
    19  	PolicyDefault Policy = iota
    20  	// PolicyImage - if set use SecurityConfig.SeccompProfileFromImage,
    21  	// otherwise follow SeccompPolicyDefault.
    22  	PolicyImage
    23  )
    24  
    25  // Map for easy lookups of supported policies.
    26  var supportedPolicies = map[string]Policy{
    27  	"":        PolicyDefault,
    28  	"default": PolicyDefault,
    29  	"image":   PolicyImage,
    30  }
    31  
    32  // LookupPolicy looks up the corresponding Policy for the specified
    33  // string. If none is found, an errors is returned including the list of
    34  // supported policies.
    35  //
    36  // Note that an empty string resolved to SeccompPolicyDefault.
    37  func LookupPolicy(s string) (Policy, error) {
    38  	policy, exists := supportedPolicies[s]
    39  	if exists {
    40  		return policy, nil
    41  	}
    42  
    43  	// Sort the keys first as maps are non-deterministic.
    44  	keys := []string{}
    45  	for k := range supportedPolicies {
    46  		if k != "" {
    47  			keys = append(keys, k)
    48  		}
    49  	}
    50  	sort.Strings(keys)
    51  
    52  	return -1, fmt.Errorf("invalid seccomp policy %q: valid policies are %+q", s, keys)
    53  }