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Rework uki to pivot at start (#271)

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* Rework uki to pivot at start

Signed-off-by: Itxaka <itxaka@kairos.io>

* Fix secureboot check

Signed-off-by: Itxaka <itxaka@kairos.io>

* debug

Signed-off-by: Itxaka <itxaka@kairos.io>

* Change order of initial stuff

first mount the barebone stuff and then do the movement

Signed-off-by: Itxaka <itxaka@kairos.io>

* Drop sleep

Signed-off-by: Itxaka <itxaka@kairos.io>

---------

Signed-off-by: Itxaka <itxaka@kairos.io>
This commit is contained in:
Itxaka
2024-04-02 10:26:07 +00:00
committed by GitHub
parent 8a142fe41f
commit 266d06334f
2 changed files with 143 additions and 140 deletions
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18
internal/utils/common.go
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@@ -242,10 +242,20 @@ func GetHostProcCmdline() string {
}
func DropToEmergencyShell() {
if err := syscall.Exec("/bin/bash", []string{"/bin/bash"}, os.Environ()); err != nil {
if err := syscall.Exec("/bin/sh", []string{"/bin/sh"}, os.Environ()); err != nil {
if err := syscall.Exec("/sysroot/bin/bash", []string{"/sysroot/bin/bash"}, os.Environ()); err != nil {
if err := syscall.Exec("/sysroot/bin/sh", []string{"/sysroot/bin/sh"}, os.Environ()); err != nil {
env := os.Environ()
pathAppend := "/usr/bin:/usr/sbin:/bin:/sbin"
// try to extract any existing path from the environment
for _, e := range env {
splitted := strings.Split(e, "=")
if splitted[0] == "PATH" {
pathAppend = fmt.Sprintf("%s:%s", pathAppend, splitted[1])
}
}
env = append(env, fmt.Sprintf("PATH=%s", pathAppend))
if err := syscall.Exec("/bin/bash", []string{"/bin/bash"}, env); err != nil {
if err := syscall.Exec("/bin/sh", []string{"/bin/sh"}, env); err != nil {
if err := syscall.Exec("/sysroot/bin/bash", []string{"/sysroot/bin/bash"}, env); err != nil {
if err := syscall.Exec("/sysroot/bin/sh", []string{"/sysroot/bin/sh"}, env); err != nil {
Log.Fatal().Msg("Could not drop to emergency shell")
}
}