sysdb: add parent_dom to sysdb_get_direct_parents()

Currently sysdb_get_direct_parents() only return direct parents from the
same domain as the child object. In setups with sub-domains this might
not be sufficient. A new option parent_dom is added which allows to
specify a domain the direct parents should be lookup up in. If it is
NULL the whole cache is searched.

Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

2 files changed, 27 insertions, 1 deletions

diff --git a/src/db/sysdb.h b/src/db/sysdb.h
index 7de3acdf3..f5d3ddb84 100644
--- a/src/db/sysdb.h
+++ b/src/db/sysdb.h
@@ -1137,8 +1137,29 @@ errno_t sysdb_remove_attrs(struct sss_domain_info *domain,
                            enum sysdb_member_type type,
                            char **remove_attrs);
 
+/**
+ * @brief Return direct parents of an object in the cache
+ *
+ * @param[in]  mem_ctx         Memory context the result should be allocated
+ *                             on
+ * @param[in]  dom             domain the object is in
+ * @param[in]  parent_dom      domain which should be searched for direct
+ *                             parents if NULL all domains in the given cache
+ *                             are searched
+ * @param[in]  mtype           Type of the object, SYSDB_MEMBER_USER or
+ *                             SYSDB_MEMBER_GROUP
+ * @param[in]  name            Name of the object
+ * @param[out] _direct_parents List of names of the direct parent groups
+ *
+ *
+ * @return
+ *  - EOK:    success
+ *  - EINVAL: wrong mtype
+ *  - ENOMEM: Memory allocation failed
+ */
 errno_t sysdb_get_direct_parents(TALLOC_CTX *mem_ctx,
                                  struct sss_domain_info *dom,
+                                 struct sss_domain_info *parent_dom,
                                  enum sysdb_member_type mtype,
                                  const char *name,
                                  char ***_direct_parents);
diff --git a/src/db/sysdb_search.c b/src/db/sysdb_search.c
index cfee5784d..4d63c3838 100644
--- a/src/db/sysdb_search.c
+++ b/src/db/sysdb_search.c
@@ -1981,6 +1981,7 @@ done:
 
 errno_t sysdb_get_direct_parents(TALLOC_CTX *mem_ctx,
                                  struct sss_domain_info *dom,
+                                 struct sss_domain_info *parent_dom,
                                  enum sysdb_member_type mtype,
                                  const char *name,
                                  char ***_direct_parents)
@@ -2029,7 +2030,11 @@ errno_t sysdb_get_direct_parents(TALLOC_CTX *mem_ctx,
         goto done;
     }
 
-    basedn = sysdb_group_base_dn(tmp_ctx, dom);
+    if (parent_dom == NULL) {
+        basedn = sysdb_base_dn(dom->sysdb, tmp_ctx);
+    } else {
+        basedn = sysdb_group_base_dn(tmp_ctx, parent_dom);
+    }
     if (!basedn) {
         ret = ENOMEM;
         goto done;