22910958b5
wwlog provides named loggers for each level, which requires less code and is clearer than wwlog.Printf. The code has included a mix of both, but this commit consolidates existing code on the per-level functions. Signed-off-by: Jonathon Anderson <janderson@ciq.co>
112 lines
3.3 KiB
Go
112 lines
3.3 KiB
Go
//go:build linux
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// +build linux
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package exec
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import (
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"fmt"
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"os"
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"os/exec"
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"path"
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"syscall"
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"time"
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"github.com/hpcng/warewulf/internal/pkg/container"
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"github.com/hpcng/warewulf/internal/pkg/util"
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"github.com/hpcng/warewulf/internal/pkg/wwlog"
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"github.com/spf13/cobra"
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)
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func runContainedCmd(args []string) error {
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wwlog.Verbose("Running contained command: %s\n", args[1:])
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c := exec.Command("/proc/self/exe", append([]string{"container", "exec", "__child"}, args...)...)
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c.SysProcAttr = &syscall.SysProcAttr{
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Cloneflags: syscall.CLONE_NEWUTS | syscall.CLONE_NEWPID | syscall.CLONE_NEWNS,
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}
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c.Stdin = os.Stdin
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c.Stdout = os.Stdout
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c.Stderr = os.Stderr
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if err := c.Run(); err != nil {
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fmt.Printf("Command exited non-zero, not rebuilding/updating VNFS image\n")
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os.Exit(0)
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}
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return nil
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}
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func CobraRunE(cmd *cobra.Command, args []string) error {
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containerName := args[0]
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var allargs []string
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if !container.ValidSource(containerName) {
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wwlog.Error("Unknown Warewulf container: %s\n", containerName)
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os.Exit(1)
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}
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for _, b := range binds {
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allargs = append(allargs, "--bind", b)
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}
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allargs = append(allargs, args...)
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containerPath := container.RootFsDir(containerName)
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fileStat, _ := os.Stat(path.Join(containerPath, "/etc/passwd"))
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unixStat := fileStat.Sys().(*syscall.Stat_t)
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passwdTime := time.Unix(int64(unixStat.Ctim.Sec), int64(unixStat.Ctim.Nsec))
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fileStat, _ = os.Stat(path.Join(containerPath, "/etc/group"))
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unixStat = fileStat.Sys().(*syscall.Stat_t)
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groupTime := time.Unix(int64(unixStat.Ctim.Sec), int64(unixStat.Ctim.Nsec))
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wwlog.Debug("passwd: %v\n", passwdTime)
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wwlog.Debug("group: %v\n", groupTime)
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err := runContainedCmd(allargs)
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if err != nil {
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wwlog.Error("Failed executing container command: %s\n", err)
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os.Exit(1)
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}
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if util.IsFile(path.Join(container.RootFsDir(allargs[0]), "/etc/warewulf/container_exit.sh")) {
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wwlog.Verbose("Found clean script: /etc/warewulf/container_exit.sh\n")
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err = runContainedCmd([]string{allargs[0], "/bin/sh", "/etc/warewulf/container_exit.sh"})
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if err != nil {
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wwlog.Error("Failed executing exit script: %s\n", err)
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os.Exit(1)
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}
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}
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fileStat, _ = os.Stat(path.Join(containerPath, "/etc/passwd"))
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unixStat = fileStat.Sys().(*syscall.Stat_t)
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syncuids := false
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if passwdTime.Before(time.Unix(int64(unixStat.Ctim.Sec), int64(unixStat.Ctim.Nsec))) {
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if !SyncUser {
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wwlog.Warn("/etc/passwd has been modified, maybe you want to run syncuser\n")
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}
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syncuids = true
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}
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wwlog.Debug("passwd: %v\n", time.Unix(int64(unixStat.Ctim.Sec), int64(unixStat.Ctim.Nsec)))
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fileStat, _ = os.Stat(path.Join(containerPath, "/etc/group"))
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unixStat = fileStat.Sys().(*syscall.Stat_t)
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if groupTime.Before(time.Unix(int64(unixStat.Ctim.Sec), int64(unixStat.Ctim.Nsec))) {
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if !SyncUser {
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wwlog.Warn("/etc/group has been modified, maybe you want to run syncuser\n")
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}
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syncuids = true
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}
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wwlog.Debug("group: %v\n", time.Unix(int64(unixStat.Ctim.Sec), int64(unixStat.Ctim.Nsec)))
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if syncuids && SyncUser {
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err = container.SyncUids(containerName, true)
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if err != nil {
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wwlog.Error("Error in user sync, fix error and run 'syncuser' manually, but trying to build container: %s\n", err)
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}
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}
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fmt.Printf("Rebuilding container...\n")
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err = container.Build(containerName, false)
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if err != nil {
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wwlog.Error("Could not build container %s: %s\n", containerName, err)
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os.Exit(1)
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}
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return nil
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}
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