From: Stéphane Graber <stgraber@stgraber.org>
Date: Mon, 16 Dec 2024 19:25:14 +0000 (-0500)
Subject: lxc.init: Ignore user signals coming from inside the contianer
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d25e7f30693b4c72b2fadd0503f65cdd0cac53b5;p=thirdparty%2Flxc.git

lxc.init: Ignore user signals coming from inside the contianer

Signed-off-by: Stéphane Graber <stgraber@stgraber.org>
---

diff --git a/src/lxc/initutils.c b/src/lxc/initutils.c
index 1cc1e695b..86b031c28 100644
--- a/src/lxc/initutils.c
+++ b/src/lxc/initutils.c
@@ -427,6 +427,11 @@ static sig_atomic_t was_interrupted;
 
 static void interrupt_handler(int sig, siginfo_t *info, void *context)
 {
+	// Only forward signals if they didn't originate from our own PID
+	// namespace and if no other signal is already being processed.
+	if (info->si_code == SI_USER && info->si_pid > 1)
+		return;
+
 	if (!was_interrupted)
 		was_interrupted = sig;
 }