chiark / gitweb /
dev-setup: allow a path prefix for use in chroots
[elogind.git] / src / core / mount-setup.c
index 07794df..be11bb8 100644 (file)
@@ -190,8 +190,7 @@ int mount_cgroup_controllers(char ***join_controllers) {
 
         controllers = set_new(string_hash_func, string_compare_func);
         if (!controllers) {
-                r = -ENOMEM;
-                log_error("Failed to allocate controller set.");
+                r = log_oom();
                 goto finish;
         }
 
@@ -262,9 +261,8 @@ int mount_cgroup_controllers(char ***join_controllers) {
 
                         options = strv_join(*k, ",");
                         if (!options) {
-                                log_error("Failed to join options");
                                 free(controller);
-                                r = -ENOMEM;
+                                r = log_oom();
                                 goto finish;
                         }
 
@@ -275,9 +273,8 @@ int mount_cgroup_controllers(char ***join_controllers) {
 
                 where = strappend("/sys/fs/cgroup/", options);
                 if (!where) {
-                        log_error("Failed to build path");
                         free(options);
-                        r = -ENOMEM;
+                        r = log_oom();
                         goto finish;
                 }
 
@@ -306,8 +303,7 @@ int mount_cgroup_controllers(char ***join_controllers) {
 
                                 t = strappend("/sys/fs/cgroup/", *i);
                                 if (!t) {
-                                        log_error("Failed to build path");
-                                        r = -ENOMEM;
+                                        r = log_oom();
                                         free(options);
                                         goto finish;
                                 }
@@ -402,7 +398,16 @@ int mount_setup(bool loaded_policy) {
         /* Create a few default symlinks, which are normally created
          * by udevd, but some scripts might need them before we start
          * udevd. */
-        dev_setup();
+        dev_setup("");
+
+        /* Mark the root directory as shared in regards to mount
+         * propagation. The kernel defaults to "private", but we think
+         * it makes more sense to have a default of "shared" so that
+         * nspawn and the container tools work out of the box. If
+         * specific setups need other settings they can reset the
+         * propagation mode to private if needed. */
+        if (mount(NULL, "/", NULL, MS_REC|MS_SHARED, NULL) < 0)
+                log_warning("Failed to set up the root directory for shared mount propagation: %m");
 
         /* Create a few directories we always want around */
         mkdir_label("/run/systemd", 0755);