The package sets for an image can depend on the blueprint, and by the same logic there is no reason it should not be able to depend on the image options. This is so far a non-functional change, but makes a follow-up commit simpler (though still without actually depending on the image options to compute the package sets).
499 lines
12 KiB
Go
499 lines
12 KiB
Go
package rhel7
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import (
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"encoding/json"
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"errors"
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"fmt"
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"math/rand"
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"path"
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"sort"
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"strings"
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"github.com/osbuild/osbuild-composer/internal/blueprint"
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"github.com/osbuild/osbuild-composer/internal/disk"
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"github.com/osbuild/osbuild-composer/internal/distro"
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osbuild "github.com/osbuild/osbuild-composer/internal/osbuild2"
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"github.com/osbuild/osbuild-composer/internal/rpmmd"
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)
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const (
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// package set names
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// build package set name
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buildPkgsKey = "build"
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// main/common os image package set name
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osPkgsKey = "packages"
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// blueprint package set name
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blueprintPkgsKey = "blueprint"
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)
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var mountpointAllowList = []string{
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"/", "/var", "/opt", "/srv", "/usr", "/app", "/data", "/home", "/tmp",
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}
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// RHEL-based OS image configuration defaults
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var defaultDistroImageConfig = &distro.ImageConfig{
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Timezone: "America/New_York",
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Locale: "en_US.UTF-8",
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GPGKeyFiles: []string{
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"/etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release",
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},
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Sysconfig: []*osbuild.SysconfigStageOptions{
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{
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Kernel: &osbuild.SysconfigKernelOptions{
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UpdateDefault: true,
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DefaultKernel: "kernel",
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},
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Network: &osbuild.SysconfigNetworkOptions{
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Networking: true,
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NoZeroConf: true,
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},
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},
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},
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}
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// distribution objects without the arches > image types
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var distroMap = map[string]distribution{
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"rhel-7": {
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name: "rhel-7",
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product: "Red Hat Enterprise Linux",
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osVersion: "7.9",
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nick: "Maipo",
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releaseVersion: "7",
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modulePlatformID: "platform:el7",
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vendor: "redhat",
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runner: "org.osbuild.rhel7",
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defaultImageConfig: defaultDistroImageConfig,
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},
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}
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// --- Distribution ---
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type distribution struct {
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name string
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product string
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nick string
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osVersion string
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releaseVersion string
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modulePlatformID string
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vendor string
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runner string
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arches map[string]distro.Arch
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defaultImageConfig *distro.ImageConfig
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}
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func (d *distribution) Name() string {
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return d.name
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}
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func (d *distribution) Releasever() string {
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return d.releaseVersion
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}
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func (d *distribution) ModulePlatformID() string {
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return d.modulePlatformID
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}
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func (d *distribution) OSTreeRef() string {
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return "" // not supported
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}
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func (d *distribution) ListArches() []string {
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archNames := make([]string, 0, len(d.arches))
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for name := range d.arches {
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archNames = append(archNames, name)
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}
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sort.Strings(archNames)
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return archNames
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}
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func (d *distribution) GetArch(name string) (distro.Arch, error) {
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arch, exists := d.arches[name]
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if !exists {
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return nil, errors.New("invalid architecture: " + name)
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}
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return arch, nil
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}
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func (d *distribution) addArches(arches ...architecture) {
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if d.arches == nil {
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d.arches = map[string]distro.Arch{}
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}
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// Do not make copies of architectures, as opposed to image types,
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// because architecture definitions are not used by more than a single
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// distro definition.
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for idx := range arches {
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d.arches[arches[idx].name] = &arches[idx]
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}
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}
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func (d *distribution) isRHEL() bool {
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return strings.HasPrefix(d.name, "rhel")
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}
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func (d *distribution) getDefaultImageConfig() *distro.ImageConfig {
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return d.defaultImageConfig
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}
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// --- Architecture ---
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type architecture struct {
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distro *distribution
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name string
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imageTypes map[string]distro.ImageType
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imageTypeAliases map[string]string
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legacy string
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bootType distro.BootType
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}
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func (a *architecture) Name() string {
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return a.name
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}
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func (a *architecture) ListImageTypes() []string {
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itNames := make([]string, 0, len(a.imageTypes))
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for name := range a.imageTypes {
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itNames = append(itNames, name)
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}
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sort.Strings(itNames)
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return itNames
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}
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func (a *architecture) GetImageType(name string) (distro.ImageType, error) {
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t, exists := a.imageTypes[name]
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if !exists {
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aliasForName, exists := a.imageTypeAliases[name]
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if !exists {
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return nil, errors.New("invalid image type: " + name)
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}
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t, exists = a.imageTypes[aliasForName]
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if !exists {
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panic(fmt.Sprintf("image type '%s' is an alias to a non-existing image type '%s'", name, aliasForName))
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}
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}
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return t, nil
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}
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func (a *architecture) addImageTypes(imageTypes ...imageType) {
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if a.imageTypes == nil {
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a.imageTypes = map[string]distro.ImageType{}
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}
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for idx := range imageTypes {
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it := imageTypes[idx]
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it.arch = a
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a.imageTypes[it.name] = &it
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for _, alias := range it.nameAliases {
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if a.imageTypeAliases == nil {
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a.imageTypeAliases = map[string]string{}
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}
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if existingAliasFor, exists := a.imageTypeAliases[alias]; exists {
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panic(fmt.Sprintf("image type alias '%s' for '%s' is already defined for another image type '%s'", alias, it.name, existingAliasFor))
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}
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a.imageTypeAliases[alias] = it.name
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}
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}
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}
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func (a *architecture) Distro() distro.Distro {
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return a.distro
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}
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// --- Image Type ---
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type pipelinesFunc func(t *imageType, customizations *blueprint.Customizations, options distro.ImageOptions, repos []rpmmd.RepoConfig, packageSetSpecs map[string][]rpmmd.PackageSpec, rng *rand.Rand) ([]osbuild.Pipeline, error)
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type packageSetFunc func(t *imageType) rpmmd.PackageSet
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type imageType struct {
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arch *architecture
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name string
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nameAliases []string
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filename string
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mimeType string
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packageSets map[string]packageSetFunc
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packageSetChains map[string][]string
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defaultImageConfig *distro.ImageConfig
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kernelOptions string
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defaultSize uint64
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buildPipelines []string
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payloadPipelines []string
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exports []string
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pipelines pipelinesFunc
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// bootable image
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bootable bool
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// If set to a value, it is preferred over the architecture value
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bootType distro.BootType
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// List of valid arches for the image type
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basePartitionTables distro.BasePartitionTableMap
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}
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func (t *imageType) Name() string {
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return t.name
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}
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func (t *imageType) Arch() distro.Arch {
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return t.arch
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}
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func (t *imageType) Filename() string {
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return t.filename
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}
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func (t *imageType) MIMEType() string {
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return t.mimeType
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}
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func (t *imageType) OSTreeRef() string {
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// Not supported
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return ""
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}
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func (t *imageType) Size(size uint64) uint64 {
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if size == 0 {
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size = t.defaultSize
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}
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return size
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}
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func (t *imageType) getPackages(name string) rpmmd.PackageSet {
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getter := t.packageSets[name]
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if getter == nil {
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return rpmmd.PackageSet{}
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}
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return getter(t)
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}
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func (t *imageType) PackageSets(bp blueprint.Blueprint, options distro.ImageOptions, repos []rpmmd.RepoConfig) map[string][]rpmmd.PackageSet {
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// merge package sets that appear in the image type with the package sets
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// of the same name from the distro and arch
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mergedSets := make(map[string]rpmmd.PackageSet)
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imageSets := t.packageSets
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for name := range imageSets {
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mergedSets[name] = t.getPackages(name)
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}
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if _, hasPackages := imageSets[osPkgsKey]; !hasPackages {
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// should this be possible??
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mergedSets[osPkgsKey] = rpmmd.PackageSet{}
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}
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// every image type must define a 'build' package set
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if _, hasBuild := imageSets[buildPkgsKey]; !hasBuild {
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panic(fmt.Sprintf("'%s' image type has no '%s' package set defined", t.name, buildPkgsKey))
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}
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// blueprint packages
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bpPackages := bp.GetPackages()
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timezone, _ := bp.Customizations.GetTimezoneSettings()
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if timezone != nil {
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bpPackages = append(bpPackages, "chrony")
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}
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// if we have file system customization that will need to a new mount point
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// the layout is converted to LVM so we need to corresponding packages
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archName := t.arch.Name()
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pt := t.basePartitionTables[archName]
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haveNewMountpoint := false
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if fs := bp.Customizations.GetFilesystems(); fs != nil {
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for i := 0; !haveNewMountpoint && i < len(fs); i++ {
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haveNewMountpoint = !pt.ContainsMountpoint(fs[i].Mountpoint)
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}
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}
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if haveNewMountpoint {
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bpPackages = append(bpPackages, "lvm2")
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}
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// depsolve bp packages separately
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// bp packages aren't restricted by exclude lists
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mergedSets[blueprintPkgsKey] = rpmmd.PackageSet{Include: bpPackages}
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kernel := bp.Customizations.GetKernel().Name
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// add bp kernel to main OS package set to avoid duplicate kernels
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mergedSets[osPkgsKey] = mergedSets[osPkgsKey].Append(rpmmd.PackageSet{Include: []string{kernel}})
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return distro.MakePackageSetChains(t, mergedSets, repos)
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}
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func (t *imageType) BuildPipelines() []string {
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return t.buildPipelines
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}
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func (t *imageType) PayloadPipelines() []string {
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return t.payloadPipelines
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}
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func (t *imageType) PayloadPackageSets() []string {
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return []string{blueprintPkgsKey}
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}
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func (t *imageType) PackageSetsChains() map[string][]string {
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return t.packageSetChains
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}
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func (t *imageType) Exports() []string {
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if len(t.exports) == 0 {
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panic(fmt.Sprintf("programming error: no exports for '%s'", t.name))
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}
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return t.exports
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}
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// getBootType returns the BootType which should be used for this particular
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// combination of architecture and image type.
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func (t *imageType) getBootType() distro.BootType {
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bootType := t.arch.bootType
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if t.bootType != distro.UnsetBootType {
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bootType = t.bootType
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}
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return bootType
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}
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func (t *imageType) getPartitionTable(
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mountpoints []blueprint.FilesystemCustomization,
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options distro.ImageOptions,
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rng *rand.Rand,
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) (*disk.PartitionTable, error) {
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archName := t.arch.Name()
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basePartitionTable, exists := t.basePartitionTables[archName]
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if !exists {
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return nil, fmt.Errorf("unknown arch: " + archName)
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}
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imageSize := t.Size(options.Size)
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return disk.NewPartitionTable(&basePartitionTable, mountpoints, imageSize, true, rng)
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}
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func (t *imageType) getDefaultImageConfig() *distro.ImageConfig {
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// ensure that image always returns non-nil default config
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imageConfig := t.defaultImageConfig
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if imageConfig == nil {
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imageConfig = &distro.ImageConfig{}
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}
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return imageConfig.InheritFrom(t.arch.distro.getDefaultImageConfig())
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}
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func (t *imageType) PartitionType() string {
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archName := t.arch.Name()
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basePartitionTable, exists := t.basePartitionTables[archName]
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if !exists {
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return ""
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}
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return basePartitionTable.Type
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}
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func (t *imageType) Manifest(customizations *blueprint.Customizations,
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options distro.ImageOptions,
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repos []rpmmd.RepoConfig,
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packageSpecSets map[string][]rpmmd.PackageSpec,
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seed int64) (distro.Manifest, error) {
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if err := t.checkOptions(customizations, options); err != nil {
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return distro.Manifest{}, err
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}
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source := rand.NewSource(seed)
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// math/rand is good enough in this case
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/* #nosec G404 */
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rng := rand.New(source)
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pipelines, err := t.pipelines(t, customizations, options, repos, packageSpecSets, rng)
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if err != nil {
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return distro.Manifest{}, err
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}
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// flatten spec sets for sources
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allPackageSpecs := make([]rpmmd.PackageSpec, 0)
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for _, specs := range packageSpecSets {
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allPackageSpecs = append(allPackageSpecs, specs...)
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}
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return json.Marshal(
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osbuild.Manifest{
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Version: "2",
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Pipelines: pipelines,
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Sources: osbuild.GenSources(allPackageSpecs, nil, nil),
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},
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)
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}
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func isMountpointAllowed(mountpoint string) bool {
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for _, allowed := range mountpointAllowList {
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match, _ := path.Match(allowed, mountpoint)
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if match {
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return true
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}
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// ensure that only clean mountpoints
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// are valid
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if strings.Contains(mountpoint, "//") {
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return false
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}
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match = strings.HasPrefix(mountpoint, allowed+"/")
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if allowed != "/" && match {
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return true
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}
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}
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return false
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}
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// checkOptions checks the validity and compatibility of options and customizations for the image type.
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func (t *imageType) checkOptions(customizations *blueprint.Customizations, options distro.ImageOptions) error {
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mountpoints := customizations.GetFilesystems()
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invalidMountpoints := []string{}
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for _, m := range mountpoints {
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if !isMountpointAllowed(m.Mountpoint) {
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invalidMountpoints = append(invalidMountpoints, m.Mountpoint)
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}
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}
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if len(invalidMountpoints) > 0 {
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return fmt.Errorf("The following custom mountpoints are not supported %+q", invalidMountpoints)
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}
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return nil
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}
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// New creates a new distro object, defining the supported architectures and image types
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func New() distro.Distro {
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return newDistro("rhel-7")
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}
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func NewHostDistro(name, modulePlatformID, ostreeRef string) distro.Distro {
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return newDistro("rhel-7")
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}
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func newDistro(distroName string) distro.Distro {
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rd := distroMap[distroName]
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// Architecture definitions
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x86_64 := architecture{
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name: distro.X86_64ArchName,
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distro: &rd,
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legacy: "i386-pc",
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bootType: distro.HybridBootType,
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}
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x86_64.addImageTypes(
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qcow2ImgType,
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azureRhuiImgType,
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)
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rd.addArches(
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x86_64,
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)
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return &rd
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}
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