add a transient user unit directory

This patch adds a transient user unit directory under
`$XDG_RUNTIME_DIR/systemd/user/` and stores transient user-instance
units (such as those created by `systemd-run --user`) under there
instead of putting them in $XDG_CONFIG_HOME/systemd/user/.

Fixes https://bugs.freedesktop.org/show_bug.cgi?id=67331

1 files changed, 19 insertions, 18 deletions

diff --git a/src/shared/install.c b/src/shared/install.c
index 61e572bdf3..302b5237a6 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -105,10 +105,14 @@ static int get_config_path(UnitFileScope scope, bool runtime, const char *root_d
 
         case UNIT_FILE_USER:
 
-                if (root_dir || runtime)
+                if (root_dir)
                         return -EINVAL;
 
-                r = user_config_home(&p);
+                if (runtime)
+                        r = user_runtime(&p);
+                else
+                        r = user_config_home(&p);
+
                 if (r <= 0)
                         return r < 0 ? r : -ENOENT;
 
@@ -527,36 +531,33 @@ static int find_symlinks_in_scope(
                 UnitFileState *state) {
 
         int r;
-        _cleanup_free_ char *path2 = NULL;
+        _cleanup_free_ char *path = NULL;
         bool same_name_link_runtime = false, same_name_link = false;
 
         assert(scope >= 0);
         assert(scope < _UNIT_FILE_SCOPE_MAX);
         assert(name);
 
-        if (scope == UNIT_FILE_SYSTEM || scope == UNIT_FILE_GLOBAL) {
-                _cleanup_free_ char *path = NULL;
 
-                /* First look in runtime config path */
-                r = get_config_path(scope, true, root_dir, &path);
-                if (r < 0)
-                        return r;
+        /* First look in runtime config path */
+        r = get_config_path(scope, true, root_dir, &path);
+        if (r < 0)
+                return r;
 
-                r = find_symlinks(name, path, &same_name_link_runtime);
-                if (r < 0)
-                        return r;
-                else if (r > 0) {
-                        *state = UNIT_FILE_ENABLED_RUNTIME;
-                        return r;
-                }
+        r = find_symlinks(name, path, &same_name_link_runtime);
+        if (r < 0)
+                return r;
+        else if (r > 0) {
+                *state = UNIT_FILE_ENABLED_RUNTIME;
+                return r;
         }
 
         /* Then look in the normal config path */
-        r = get_config_path(scope, false, root_dir, &path2);
+        r = get_config_path(scope, false, root_dir, &path);
         if (r < 0)
                 return r;
 
-        r = find_symlinks(name, path2, &same_name_link);
+        r = find_symlinks(name, path, &same_name_link);
         if (r < 0)
                 return r;
         else if (r > 0) {