config: any_priv_below: plural name & switch to slice of &str for path

s/any_priv_below/any_privs_below/ for consistency and switch from a
single &str for the path param to the slice-ref string variant, as
that allows to use it more often without allocation.

Also allow passing the whole path as single &str element in the slice
by splitting each component on '/' like we do in other parts
nowadays. Note though that we need to omit the leading slash then.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

pbs-config/src/acl.rs

@@ -669,22 +669,26 @@ impl AclTree {
     }
 
     /// Checks whether the `auth_id` has any of the privilegs `privs` on any object below `path`.
-    pub fn any_priv_below(&self, auth_id: &Authid, path: &str, privs: u64) -> Result<bool, Error> {
-        let comps = split_acl_path(path);
+    pub fn any_privs_below(
+        &self,
+        auth_id: &Authid,
+        path: &[&str],
+        privs: u64,
+    ) -> Result<bool, Error> {
         let mut node = &self.root;
 
         // check first if there's any propagated priv we need to be aware of
-        for c in comps {
-            // set propagate to false to get only propagating roles
+        for outer in path {
+            for c in outer.split('/') {
                 if node.check_any_privs(auth_id, privs, true)? {
                     return Ok(true);
                 }
-
                 // check next component
                 node = node.children.get(&c.to_string()).ok_or(format_err!(
-                "component '{c}' of path '{path}' does not exist in current acl tree"
+                    "component '{c}' of path '{path:?}' does not exist in current acl tree"
                 ))?;
             }
+        }
 
         // check last node in the path too
         if node.check_any_privs(auth_id, privs, true)? {
@@ -945,22 +949,22 @@ acl:1:/storage/store1:user1@pbs:DatastoreBackup
         let user2: Authid = "user2@pbs".parse()?;
 
         // user1 has admin on "/store/store2/store3" -> return true
-        assert!(tree.any_priv_below(&user1, "/store", ROLE_ADMIN)?);
+        assert!(tree.any_privs_below(&user1, &["store"], ROLE_ADMIN)?);
 
         // user2 has not privileges under "/store/store2/store3" --> return false
-        assert!(!tree.any_priv_below(&user2, "/store/store2/store3", ROLE_DATASTORE_READER)?);
+        assert!(!tree.any_privs_below(&user2, &["store", "store2", "store3"], ROLE_DATASTORE_READER)?);
 
         // user2 has DatastoreReader privileges under "/store/store2/store31" --> return true
-        assert!(tree.any_priv_below(&user2, "/store/store2/store31", ROLE_DATASTORE_READER)?);
+        assert!(tree.any_privs_below(&user2, &["store/store2/store31"], ROLE_DATASTORE_READER)?);
 
         // user2 has no TapeReader privileges under "/store/store2/store31" --> return false
-        assert!(!tree.any_priv_below(&user2, "/store/store2/store31", ROLE_TAPE_READER)?);
+        assert!(!tree.any_privs_below(&user2, &["store/store2/store31"], ROLE_TAPE_READER)?);
 
         // user2 has no DatastoreReader propagating privileges on
         // "/store/store2/store31/store4/store6" --> return true
-        assert!(tree.any_priv_below(
+        assert!(tree.any_privs_below(
             &user2,
-            "/store/store2/store31/store4/store6",
+            &["store/store2/store31/store4/store6"],
             ROLE_DATASTORE_READER
         )?);