container/init: configurable lingering process wait delay

Signed-off-by: Ophestra <cat@gensokyo.uk>

1 files changed, 10 insertions, 0 deletions

diff --git a/container/container.go b/container/container.go
index 09360df5..7f2d9b97 100644
--- a/container/container.go
+++ b/container/container.go
@@ -68,6 +68,8 @@ type (
 		Args []string
 		// Deliver SIGINT to the initial process on context cancellation.
 		ForwardCancel bool
+		// time to wait for linger processes after death of initial process
+		AdoptWaitDelay time.Duration
 
 		// Mapped Uid in user namespace.
 		Uid int
@@ -128,6 +130,14 @@ func (p *Container) Start() error {
 		p.SeccompPresets |= seccomp.PresetDenyTTY
 	}
 
+	if p.AdoptWaitDelay == 0 {
+		p.AdoptWaitDelay = 5 * time.Second
+	}
+	// to allow disabling this behaviour
+	if p.AdoptWaitDelay < 0 {
+		p.AdoptWaitDelay = 0
+	}
+
 	p.cmd = exec.CommandContext(ctx, MustExecutable())
 	p.cmd.Args = []string{initName}
 	p.cmd.Stdin, p.cmd.Stdout, p.cmd.Stderr = p.Stdin, p.Stdout, p.Stderr