From: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Date: Fri, 2 Dec 2011 19:41:46 +0000 (-0200)
Subject: index: mmap: read child node
X-Git-Tag: v1~117
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=91298dc79ecaafb474b3995b7976cb45584d534b;p=thirdparty%2Fkmod.git

index: mmap: read child node
---

diff --git a/libkmod/libkmod-index.c b/libkmod/libkmod-index.c
index 8f35ecf0..c21eec76 100644
--- a/libkmod/libkmod-index.c
+++ b/libkmod/libkmod-index.c
@@ -706,3 +706,14 @@ static struct index_mm_node *index_mm_readroot(struct index_mm *idx)
 {
 	return index_mm_read_node(idx, idx->root_offset);
 }
+
+static struct index_mm_node *index_mm_readchild(const struct index_mm_node *parent,
+									int ch)
+{
+	if (parent->first <= ch && ch <= parent->last) {
+		return index_mm_read_node(parent->idx,
+					parent->children[ch - parent->first]);
+	}
+
+	return NULL;
+}