mirror of
https://github.com/containers/podman.git
synced 2025-10-31 18:08:51 +08:00
d968f3fe09
Package `io/ioutil` was deprecated in golang 1.16, preventing podman from building under Fedora 37. Fortunately, functionality identical replacements are provided by the packages `io` and `os`. Replace all usage of all `io/ioutil` symbols with appropriate substitutions according to the golang docs. Signed-off-by: Chris Evich <cevich@redhat.com>
95 lines
2.6 KiB
Go
95 lines
2.6 KiB
Go
package generate
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import (
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"context"
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"fmt"
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"os"
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buildahDefine "github.com/containers/buildah/define"
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"github.com/containers/common/pkg/config"
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"github.com/containers/podman/v4/libpod"
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"github.com/containers/podman/v4/libpod/define"
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)
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// PullOrBuildInfraImage pulls down the specified image or the one set in
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// containers.conf. If none is set, it builds a local pause image.
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func PullOrBuildInfraImage(rt *libpod.Runtime, imageName string) (string, error) {
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rtConfig, err := rt.GetConfigNoCopy()
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if err != nil {
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return "", err
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}
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if imageName == "" {
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imageName = rtConfig.Engine.InfraImage
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}
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if imageName != "" {
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_, err := rt.LibimageRuntime().Pull(context.Background(), imageName, config.PullPolicyMissing, nil)
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if err != nil {
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return "", err
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}
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return imageName, nil
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}
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name, err := buildPauseImage(rt, rtConfig)
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if err != nil {
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return "", fmt.Errorf("building local pause image: %w", err)
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}
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return name, nil
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}
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func buildPauseImage(rt *libpod.Runtime, rtConfig *config.Config) (string, error) {
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version, err := define.GetVersion()
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if err != nil {
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return "", err
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}
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imageName := fmt.Sprintf("localhost/podman-pause:%s-%d", version.Version, version.Built)
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// First check if the image has already been built.
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if _, _, err := rt.LibimageRuntime().LookupImage(imageName, nil); err == nil {
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return imageName, nil
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}
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// Also look into the path as some distributions install catatonit in
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// /usr/bin.
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catatonitPath, err := rtConfig.FindHelperBinary("catatonit", true)
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if err != nil {
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return "", fmt.Errorf("finding pause binary: %w", err)
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}
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buildContent := fmt.Sprintf(`FROM scratch
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COPY %s /catatonit
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ENTRYPOINT ["/catatonit", "-P"]`, catatonitPath)
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tmpF, err := os.CreateTemp("", "pause.containerfile")
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if err != nil {
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return "", err
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}
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if _, err := tmpF.WriteString(buildContent); err != nil {
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return "", err
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}
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if err := tmpF.Close(); err != nil {
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return "", err
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}
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defer os.Remove(tmpF.Name())
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buildOptions := buildahDefine.BuildOptions{
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CommonBuildOpts: &buildahDefine.CommonBuildOptions{},
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Output: imageName,
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Quiet: true,
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IgnoreFile: "/dev/null", // makes sure to not read a local .ignorefile (see #13529)
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IIDFile: "/dev/null", // prevents Buildah from writing the ID on stdout
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IDMappingOptions: &buildahDefine.IDMappingOptions{
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// Use the host UID/GID mappings for the build to avoid issues when
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// running with a custom mapping (BZ #2083997).
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HostUIDMapping: true,
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HostGIDMapping: true,
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},
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}
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if _, _, err := rt.Build(context.Background(), buildOptions, tmpF.Name()); err != nil {
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return "", err
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}
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return imageName, nil
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}
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