From 0f18db54328f9e5a54d303937f84aad017d16cdf Mon Sep 17 00:00:00 2001
From: =?utf8?q?St=C3=A9phane=20Graber?= <stgraber@stgraber.org>
Date: Tue, 2 Apr 2024 11:21:43 -0400
Subject: [PATCH] lxc-checkconfig: Show namespace limits
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Closes #4259

Signed-off-by: Stéphane Graber <stgraber@stgraber.org>
---
 src/lxc/cmd/lxc-checkconfig.in | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/lxc/cmd/lxc-checkconfig.in b/src/lxc/cmd/lxc-checkconfig.in
index 361d4d98c..c77da4d3d 100755
--- a/src/lxc/cmd/lxc-checkconfig.in
+++ b/src/lxc/cmd/lxc-checkconfig.in
@@ -160,6 +160,14 @@ if [ $KVER_MAJOR -lt 4 ] || { [ $KVER_MAJOR -eq 4 ] && [ $KVER_MINOR -lt 7 ]; };
     printf "Multiple /dev/pts instances: " && is_enabled DEVPTS_MULTIPLE_INSTANCES
     echo
 fi
+echo "Namespace limits:"
+for file in /proc/sys/user/max_*_namespaces; do
+    [ -r "${file}" ] || continue
+
+    ns_name="$(basename "${file}" | sed -e "s/^max_//g" -e "s/_namespaces$//g")"
+    printf "  %s: %s" "${ns_name}" "$(cat "${file}")"
+    echo
+done
 
 echo "
 --- Control groups ---"
-- 
2.47.3