From f6b572a2f682196651362713820ed02b6d7e29a9 Mon Sep 17 00:00:00 2001 From: Hridya Valsaraju Date: Tue, 4 May 2021 11:49:43 -0700 Subject: Throw an error on all overlay application errors libufdt depends on the presence of the __overlay__ subnode to identify a node in an overlay DT as a fragment node. Since base DT target only needs to resolved for valid fragment nodes, return early for non-fragment nodes. This allows us to return an error code for any other error. Test: sh tests/run_tests.sh Bug: 186482257 Change-Id: I05ec377e3773dc4a6396278f246da994c9004865 --- ufdt_overlay.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/ufdt_overlay.c b/ufdt_overlay.c index 019545f..c432cd4 100644 --- a/ufdt_overlay.c +++ b/ufdt_overlay.c @@ -363,18 +363,18 @@ static enum overlay_result ufdt_apply_fragment(struct ufdt *tree, struct ufdt_node *target_node = NULL; struct ufdt_node *overlay_node = NULL; + overlay_node = ufdt_node_get_node_by_path(frag_node, "__overlay__"); + if (overlay_node == NULL) { + return OVERLAY_RESULT_MISSING_OVERLAY; + } + enum overlay_result result = ufdt_overlay_get_target(tree, frag_node, &target_node); if (target_node == NULL) { + dto_error("Unable to resolve target for %s\n", ufdt_node_name(frag_node)); return result; } - overlay_node = ufdt_node_get_node_by_path(frag_node, "__overlay__"); - if (overlay_node == NULL) { - dto_error("missing __overlay__ sub-node\n"); - return OVERLAY_RESULT_MISSING_OVERLAY; - } - int err = ufdt_overlay_node(target_node, overlay_node, pool); if (err < 0) { @@ -392,15 +392,17 @@ static enum overlay_result ufdt_apply_fragment(struct ufdt *tree, static int ufdt_overlay_apply_fragments(struct ufdt *main_tree, struct ufdt *overlay_tree, struct ufdt_node_pool *pool) { - enum overlay_result err; + enum overlay_result ret; struct ufdt_node **it; /* * This loop may iterate to subnodes that's not a fragment node. - * In such case, ufdt_apply_fragment would fail with return value = -1. + * We must fail for any other error. */ for_each_node(it, overlay_tree->root) { - err = ufdt_apply_fragment(main_tree, *it, pool); - if (err == OVERLAY_RESULT_MERGE_FAIL) { + ret = ufdt_apply_fragment(main_tree, *it, pool); + if ((ret != OVERLAY_RESULT_OK) && (ret != OVERLAY_RESULT_MISSING_OVERLAY)) { + dto_error("failed to apply overlay fragment %s ret: %d\n", + ufdt_node_name(*it), ret); return -1; } } -- cgit v1.2.3