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distro.go
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distro.go
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package rhel7
import (
"errors"
"fmt"
"sort"
"strings"
"github.com/osbuild/images/internal/common"
"github.com/osbuild/images/pkg/arch"
"github.com/osbuild/images/pkg/distro"
"github.com/osbuild/images/pkg/osbuild"
"github.com/osbuild/images/pkg/platform"
"github.com/osbuild/images/pkg/runner"
)
const (
// package set names
// main/common os image package set name
osPkgsKey = "os"
// blueprint package set name
blueprintPkgsKey = "blueprint"
// location for saving openscap remediation data
oscapDataDir = "/oscap_data"
)
// RHEL-based OS image configuration defaults
var defaultDistroImageConfig = &distro.ImageConfig{
Timezone: common.ToPtr("America/New_York"),
Locale: common.ToPtr("en_US.UTF-8"),
GPGKeyFiles: []string{
"/etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release",
},
Sysconfig: []*osbuild.SysconfigStageOptions{
{
Kernel: &osbuild.SysconfigKernelOptions{
UpdateDefault: true,
DefaultKernel: "kernel",
},
Network: &osbuild.SysconfigNetworkOptions{
Networking: true,
NoZeroConf: true,
},
},
},
}
// --- Distribution ---
type distribution struct {
name string
product string
nick string
osVersion string
releaseVersion string
modulePlatformID string
vendor string
runner runner.Runner
arches map[string]distro.Arch
defaultImageConfig *distro.ImageConfig
}
func (d *distribution) Name() string {
return d.name
}
func (d *distribution) Releasever() string {
return d.releaseVersion
}
func (d *distribution) ModulePlatformID() string {
return d.modulePlatformID
}
func (d *distribution) OSTreeRef() string {
return "" // not supported
}
func (d *distribution) ListArches() []string {
archNames := make([]string, 0, len(d.arches))
for name := range d.arches {
archNames = append(archNames, name)
}
sort.Strings(archNames)
return archNames
}
func (d *distribution) GetArch(name string) (distro.Arch, error) {
arch, exists := d.arches[name]
if !exists {
return nil, errors.New("invalid architecture: " + name)
}
return arch, nil
}
func (d *distribution) addArches(arches ...architecture) {
if d.arches == nil {
d.arches = map[string]distro.Arch{}
}
// Do not make copies of architectures, as opposed to image types,
// because architecture definitions are not used by more than a single
// distro definition.
for idx := range arches {
d.arches[arches[idx].name] = &arches[idx]
}
}
func (d *distribution) isRHEL() bool {
return strings.HasPrefix(d.name, "rhel")
}
func (d *distribution) getDefaultImageConfig() *distro.ImageConfig {
return d.defaultImageConfig
}
// --- Architecture ---
type architecture struct {
distro *distribution
name string
imageTypes map[string]distro.ImageType
imageTypeAliases map[string]string
}
func (a *architecture) Name() string {
return a.name
}
func (a *architecture) ListImageTypes() []string {
itNames := make([]string, 0, len(a.imageTypes))
for name := range a.imageTypes {
itNames = append(itNames, name)
}
sort.Strings(itNames)
return itNames
}
func (a *architecture) GetImageType(name string) (distro.ImageType, error) {
t, exists := a.imageTypes[name]
if !exists {
aliasForName, exists := a.imageTypeAliases[name]
if !exists {
return nil, errors.New("invalid image type: " + name)
}
t, exists = a.imageTypes[aliasForName]
if !exists {
panic(fmt.Sprintf("image type '%s' is an alias to a non-existing image type '%s'", name, aliasForName))
}
}
return t, nil
}
func (a *architecture) addImageTypes(platform platform.Platform, imageTypes ...imageType) {
if a.imageTypes == nil {
a.imageTypes = map[string]distro.ImageType{}
}
for idx := range imageTypes {
it := imageTypes[idx]
it.arch = a
it.platform = platform
a.imageTypes[it.name] = &it
for _, alias := range it.nameAliases {
if a.imageTypeAliases == nil {
a.imageTypeAliases = map[string]string{}
}
if existingAliasFor, exists := a.imageTypeAliases[alias]; exists {
panic(fmt.Sprintf("image type alias '%s' for '%s' is already defined for another image type '%s'", alias, it.name, existingAliasFor))
}
a.imageTypeAliases[alias] = it.name
}
}
}
func (a *architecture) Distro() distro.Distro {
return a.distro
}
func newDistro(name string, minor int) *distribution {
var rd distribution
switch name {
case "rhel":
rd = distribution{
name: fmt.Sprintf("rhel-7.%d", minor),
product: "Red Hat Enterprise Linux",
osVersion: fmt.Sprintf("7.%d", minor),
nick: "Maipo",
releaseVersion: "7",
modulePlatformID: "platform:el7",
vendor: "redhat",
runner: &runner.RHEL{Major: uint64(7), Minor: uint64(minor)},
defaultImageConfig: defaultDistroImageConfig,
}
default:
panic(fmt.Sprintf("unknown distro name: %s", name))
}
// Architecture definitions
x86_64 := architecture{
name: arch.ARCH_X86_64.String(),
distro: &rd,
}
x86_64.addImageTypes(
&platform.X86{
BIOS: true,
UEFIVendor: rd.vendor,
BasePlatform: platform.BasePlatform{
ImageFormat: platform.FORMAT_QCOW2,
QCOW2Compat: "0.10",
},
},
qcow2ImgType,
)
x86_64.addImageTypes(
&platform.X86{
BIOS: true,
UEFIVendor: rd.vendor,
BasePlatform: platform.BasePlatform{
ImageFormat: platform.FORMAT_VHD,
},
},
azureRhuiImgType,
)
rd.addArches(
x86_64,
)
return &rd
}
func ParseID(idStr string) (*distro.ID, error) {
id, err := distro.ParseID(idStr)
if err != nil {
return nil, err
}
if id.Name != "rhel" {
return nil, fmt.Errorf("invalid distro name: %s", id.Name)
}
if id.MajorVersion != 7 {
return nil, fmt.Errorf("invalid distro major version: %d", id.MajorVersion)
}
// RHEL uses minor version
if id.Name == "rhel" && id.MinorVersion == -1 {
return nil, fmt.Errorf("rhel requires minor version, but got: %d", id.MinorVersion)
}
return id, nil
}
func DistroFactory(idStr string) distro.Distro {
id, err := ParseID(idStr)
if err != nil {
return nil
}
return newDistro(id.Name, id.MinorVersion)
}