1 files changed, 3 insertions, 3 deletions

diff --git a/src/firejail/chroot.c b/src/firejail/chroot.c
index f5bb11a76..eac784e53 100644
--- a/src/firejail/chroot.c
+++ b/src/firejail/chroot.c
@@ -35,8 +35,8 @@ void fs_check_chroot_dir(void) {
         EUID_ASSERT();
         assert(cfg.chrootdir);
         if (strstr(cfg.chrootdir, "..") ||
-        is_link(cfg.chrootdir) ||
-        !is_dir(cfg.chrootdir))
+            is_link(cfg.chrootdir) ||
+            !is_dir(cfg.chrootdir))
                 goto errout;
 
         // check chroot dirname exists, chrooting into the root directory is not allowed
@@ -82,7 +82,7 @@ static void copy_resolvconf(int parentfd) {
         if (arg_debug)
                 printf("Updating /etc/resolv.conf in chroot\n");
         unlinkat(parentfd, "etc/resolv.conf", 0);
-        int out = openat(parentfd, "etc/resolv.conf", O_CREAT|O_WRONLY|O_CLOEXEC, S_IRUSR | S_IWRITE | S_IRGRP | S_IROTH);
+        int out = openat(parentfd, "etc/resolv.conf", O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC, S_IRUSR | S_IWRITE | S_IRGRP | S_IROTH);
         if (out == -1)
                 errExit("open");
         if (sendfile(out, in, NULL, src.st_size) == -1)