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container: ptrace protection via Yama LSM
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This is only a nice to have feature as the init process has no additional privileges and the monitor process was never reachable anyway.

Closes #4.

Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra
2025-08-20 00:27:45 +09:00
parent 6947ff04e0
commit 13c7083bc0
3 changed files with 18 additions and 0 deletions
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5
cmd/hakurei/main.go
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@@ -30,6 +30,11 @@ func main() {
// early init path, skips root check and duplicate PR_SET_DUMPABLE
container.TryArgv0(hlog.Output{}, hlog.Prepare, internal.InstallOutput)
if err := container.SetPtracer(0); err != nil {
hlog.Verbosef("cannot enable ptrace protection via Yama LSM: %v", err)
// not fatal: this program runs as the privileged user
}
if err := container.SetDumpable(container.SUID_DUMP_DISABLE); err != nil {
log.Printf("cannot set SUID_DUMP_DISABLE: %s", err)
// not fatal: this program runs as the privileged user