mirror of https://github.com/containers/podman.git
68 lines
2.4 KiB
Go
68 lines
2.4 KiB
Go
//go:build !remote
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package libpod
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import (
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"errors"
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"fmt"
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"os"
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"golang.org/x/sys/unix"
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"github.com/containers/common/pkg/cgroups"
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"github.com/containers/podman/v5/pkg/rootless"
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"github.com/containers/podman/v5/pkg/systemd"
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"github.com/sirupsen/logrus"
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)
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func checkCgroups2UnifiedMode(runtime *Runtime) {
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unified, _ := cgroups.IsCgroup2UnifiedMode()
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// DELETE ON RHEL9
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if !unified {
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_, ok := os.LookupEnv("PODMAN_IGNORE_CGROUPSV1_WARNING")
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if !ok {
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logrus.Warn("Using cgroups-v1 which is deprecated in favor of cgroups-v2 with Podman v5 and will be removed in a future version. Set environment variable `PODMAN_IGNORE_CGROUPSV1_WARNING` to hide this warning.")
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}
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}
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// DELETE ON RHEL9
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if unified && rootless.IsRootless() && !systemd.IsSystemdSessionValid(rootless.GetRootlessUID()) {
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// If user is rootless and XDG_RUNTIME_DIR is found, podman will not proceed with /tmp directory
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// it will try to use existing XDG_RUNTIME_DIR
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// if current user has no write access to XDG_RUNTIME_DIR we will fail later
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if err := unix.Access(runtime.storageConfig.RunRoot, unix.W_OK); err != nil {
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msg := fmt.Sprintf("RunRoot is pointing to a path (%s) which is not writable. Most likely podman will fail.", runtime.storageConfig.RunRoot)
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if errors.Is(err, os.ErrNotExist) {
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// if dir does not exist, try to create it
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if err := os.MkdirAll(runtime.storageConfig.RunRoot, 0700); err != nil {
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logrus.Warn(msg)
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}
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} else {
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logrus.Warnf("%s: %v", msg, err)
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}
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}
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}
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}
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// Check the current boot ID against the ID cached in the runtime alive file.
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func (r *Runtime) checkBootID(runtimeAliveFile string) error {
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systemBootID, err := os.ReadFile("/proc/sys/kernel/random/boot_id")
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if err == nil {
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podmanBootID, err := os.ReadFile(runtimeAliveFile)
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if err != nil {
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return fmt.Errorf("reading boot ID from runtime alive file: %w", err)
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}
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if len(podmanBootID) != 0 {
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if string(systemBootID) != string(podmanBootID) {
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return fmt.Errorf("current system boot ID differs from cached boot ID; an unhandled reboot has occurred. Please delete directories %q and %q and re-run Podman", r.storageConfig.RunRoot, r.config.Engine.TmpDir)
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}
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} else {
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// Write the current boot ID to the alive file.
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if err := os.WriteFile(runtimeAliveFile, systemBootID, 0644); err != nil {
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return fmt.Errorf("writing boot ID to runtime alive file: %w", err)
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}
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}
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}
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return nil
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}
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