From: Daniel Golle <daniel@makrotopia.org>
Date: Thu, 12 Mar 2020 21:54:19 +0000 (+0100)
Subject: jail: mount-bind /etc/resolv.conf for non-netns jails
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=77a6782d6e4eba2c49e642672de134aff443ef72;p=oweals%2Fprocd.git

jail: mount-bind /etc/resolv.conf for non-netns jails

Many applications won't work without name resolution and expect
/etc/resolv.conf in place. While this is already handled for
netns-jails, simply mount-bind /etc/resolv.conf for non-netns-jails.

Signed-off-by: Daniel Golle <daniel@makrotoia.org>
---

diff --git a/jail/jail.c b/jail/jail.c
index eb976cb..5414519 100644
--- a/jail/jail.c
+++ b/jail/jail.c
@@ -544,6 +544,10 @@ int main(int argc, char **argv)
 				add_mount("/etc/passwd", 0, -1);
 				add_mount("/etc/group", 0, -1);
 			}
+
+			if (!(opts.namespace & CLONE_NEWNET)) {
+				add_mount("/etc/resolv.conf", 0, -1);
+			}
 		}
 
 		if (opts.hostname)