diff options
Diffstat (limited to 'vendor/github.com/projectatomic/buildah/util/util.go')
| -rw-r--r-- | vendor/github.com/projectatomic/buildah/util/util.go | 53 |
1 files changed, 52 insertions, 1 deletions
diff --git a/vendor/github.com/projectatomic/buildah/util/util.go b/vendor/github.com/projectatomic/buildah/util/util.go index 61705867d..2617a27b7 100644 --- a/vendor/github.com/projectatomic/buildah/util/util.go +++ b/vendor/github.com/projectatomic/buildah/util/util.go @@ -7,6 +7,7 @@ import ( "net/url" "os" "path" + "path/filepath" "strconv" "strings" @@ -15,6 +16,7 @@ import ( "github.com/containers/image/docker/reference" ociarchive "github.com/containers/image/oci/archive" "github.com/containers/image/pkg/sysregistries" + "github.com/containers/image/signature" is "github.com/containers/image/storage" "github.com/containers/image/tarball" "github.com/containers/image/types" @@ -330,7 +332,8 @@ func getHostIDMappings(path string) ([]specs.LinuxIDMapping, error) { return mappings, nil } -// GetHostIDMappings reads mappings for the current process from the kernel. +// GetHostIDMappings reads mappings for the specified process (or the current +// process if pid is "self" or an empty string) from the kernel. func GetHostIDMappings(pid string) ([]specs.LinuxIDMapping, []specs.LinuxIDMapping, error) { if pid == "" { pid = "self" @@ -428,3 +431,51 @@ func ParseIDMappings(uidmap, gidmap []string) ([]idtools.IDMap, []idtools.IDMap, } return uid, gid, nil } + +// UnsharedRootPath returns a location under ($XDG_DATA_HOME/containers/storage, +// or $HOME/.local/share/containers/storage, or +// (the user's home directory)/.local/share/containers/storage, or an error. +func UnsharedRootPath(homedir string) (string, error) { + // If $XDG_DATA_HOME is defined... + if envDataHome, haveDataHome := os.LookupEnv("XDG_DATA_HOME"); haveDataHome { + return filepath.Join(envDataHome, "containers", "storage"), nil + } + // If $XDG_DATA_HOME is not defined, but $HOME is defined... + if envHomedir, haveHomedir := os.LookupEnv("HOME"); haveHomedir { + // Default to the user's $HOME/.local/share/containers/storage subdirectory. + return filepath.Join(envHomedir, ".local", "share", "containers", "storage"), nil + } + // If we know where our home directory is... + if homedir != "" { + // Default to the user's homedir/.local/share/containers/storage subdirectory. + return filepath.Join(homedir, ".local", "share", "containers", "storage"), nil + } + return "", errors.New("unable to determine a --root location: neither $XDG_DATA_HOME nor $HOME is set") +} + +// UnsharedRunrootPath returns $XDG_RUNTIME_DIR/run, /var/run/user/(the user's UID)/run, or an error. +func UnsharedRunrootPath(uid string) (string, error) { + // If $XDG_RUNTIME_DIR is defined... + if envRuntimeDir, haveRuntimeDir := os.LookupEnv("XDG_RUNTIME_DIR"); haveRuntimeDir { + return filepath.Join(envRuntimeDir, "run"), nil + } + // If $XDG_RUNTIME_DIR is not defined, but we know our UID... + if uid != "" { + return filepath.Join("/var/run/user", uid, "run"), nil + } + return "", errors.New("unable to determine a --runroot location: $XDG_RUNTIME_DIR is not set, and we don't know our UID") +} + +// GetPolicyContext sets up, initializes and returns a new context for the specified policy +func GetPolicyContext(ctx *types.SystemContext) (*signature.PolicyContext, error) { + policy, err := signature.DefaultPolicy(ctx) + if err != nil { + return nil, err + } + + policyContext, err := signature.NewPolicyContext(policy) + if err != nil { + return nil, err + } + return policyContext, nil +} |