From: Roy Marples <roy@marples.name>
Date: Fri, 17 Jan 2020 14:02:59 +0000 (+0000)
Subject: privsep: chdir after chroot
X-Git-Tag: v9.0.0~104
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a57997e20530eca62c2f932f00e9c9f6574cb43e;p=thirdparty%2Fdhcpcd.git

privsep: chdir after chroot

chroot itself does not actually change the directory....
---

diff --git a/src/privsep.c b/src/privsep.c
index 0610f03d..57b76b82 100644
--- a/src/privsep.c
+++ b/src/privsep.c
@@ -212,6 +212,8 @@ ps_dostart(struct dhcpcd_ctx *ctx,
 
 	if (chroot(pw->pw_dir) == -1)
 		logerr("%s: chroot `%s'", __func__, pw->pw_dir);
+	if (chdir("/") == -1)
+		logerr("%s: chdir `/'", __func__);
 
 dropprivs:
 	if (setgroups(1, &pw->pw_gid) == -1 ||