namespace: rework namespace support

- don't use pivot_root() anymore, just reuse root hierarchy
- first create all mounts, then mark them read-only so that we get the
  right behaviour when people want writable mounts inside of
  read-only mounts
- don't pass invalid combinations of MS_ constants to the kernel

1 files changed, 3 insertions, 2 deletions

diff --git a/src/test/test-ns.c b/src/test/test-ns.c
index 102b005880..b1c759fc20 100644
--- a/src/test/test-ns.c
+++ b/src/test/test-ns.c
@@ -34,7 +34,7 @@ int main(int argc, char *argv[]) {
                 NULL
         };
 
-        const char * const readable[] = {
+        const char * const readonly[] = {
                 "/",
                 "/usr",
                 "/boot",
@@ -48,7 +48,8 @@ int main(int argc, char *argv[]) {
 
         int r;
 
-        if ((r = setup_namespace((char**) writable, (char**) readable, (char**) inaccessible, true, MS_SHARED)) < 0) {
+        r = setup_namespace((char**) writable, (char**) readonly, (char**) inaccessible, true, 0);
+        if (r < 0) {
                 log_error("Failed to setup namespace: %s", strerror(-r));
                 return 1;
         }