[git commit] ftpd: do not use root_fd if we are not in chroot

[Denys Vlasenko]

commit: http://git.busybox.net/busybox/commit/?id=9d7cbdeee3545d36db201a2d822cd2bd10074add
branch: http://git.busybox.net/busybox/commit/?id=refs/heads/master

Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
 networking/ftpd.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/networking/ftpd.c b/networking/ftpd.c
index e7cf5f4..2d2a3a4 100644
--- a/networking/ftpd.c
+++ b/networking/ftpd.c
@@ -1173,11 +1173,14 @@ int ftpd_main(int argc UNUSED_PARAM, char **argv)
 		applet_name = xasprintf("%s[%u]", applet_name, (int)getpid());
 
 #if !BB_MMU
-	G.root_fd = xopen("/", O_RDONLY | O_DIRECTORY);
-	close_on_exec_on(G.root_fd);
+	G.root_fd = -1;
 #endif
 	argv += optind;
 	if (argv[0]) {
+#if !BB_MMU
+		G.root_fd = xopen("/", O_RDONLY | O_DIRECTORY);
+		close_on_exec_on(G.root_fd);
+#endif
 		xchroot(argv[0]);
 	}