From: Etienne CHAMPETIER <champetier.etienne@gmail.com>
Date: Fri, 30 Dec 2016 02:08:58 +0000 (-0800)
Subject: ujail: add basic /dev files
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=f7069032290a9720142b2ee2c6315d7e1f1a1bd3;p=project%2Fprocd.git

ujail: add basic /dev files

This adds
/dev/full
/dev/null
/dev/urandom
/dev/zero
in every jail (not having them only allow subtle bugs)

Signed-off-by: Etienne CHAMPETIER <champetier.etienne@gmail.com>
---

diff --git a/jail/jail.c b/jail/jail.c
index 834d677..8e7cddc 100644
--- a/jail/jail.c
+++ b/jail/jail.c
@@ -398,6 +398,11 @@ int main(int argc, char **argv)
 
 	uloop_init();
 	if (opts.namespace) {
+		add_mount("/dev/full", 0, -1);
+		add_mount("/dev/null", 0, -1);
+		add_mount("/dev/urandom", 0, -1);
+		add_mount("/dev/zero", 0, -1);
+
 		int flags = CLONE_NEWPID | CLONE_NEWNS | CLONE_NEWIPC | SIGCHLD;
 		if (opts.hostname)
 			flags |= CLONE_NEWUTS;