From bceab75f6330f82e55381c49026878e3a339a984 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Thu, 04 May 2023 16:39:54 -0400
Subject: dirent: Handle NULL buffers, remove function

---
diff --git a/src/dirent.c b/src/dirent.c
index eb92a2b..0fa3156 100644
--- a/src/dirent.c
+++ b/src/dirent.c
@@ -33,12 +33,18 @@ _opkg_opk_dirent_name_prefix(struct opkg_opk_dirent *dirent, char **name_buf,
 	len = strlen(dirent->name);
 	if (*name_len + len <= *name_buf_len) {
 		buf = name_buf;
+		if (*buf == NULL) {
+			return OPKG_OPK_ERROR;
+		}
 		if (**buf != '\0') {
 			++len;
 		}
 		*name_buf_len -= len;
 	} else if (*pref_len + len <= *pref_buf_len) {
 		buf = pref_buf;
+		if (*buf == NULL) {
+			return OPKG_OPK_ERROR;
+		}
 		if (**buf != '\0') {
 			++len;
 		}
@@ -83,53 +89,3 @@ opkg_opk_dirent_name_prefix(struct opkg_opk_dirent *dirent, char *name_buf,
 	pref_buf[pref_len] = '\0';
 	return OPKG_OPK_OK;
 }
-
-static char *
-_opkg_opk_dirent_full_name(struct opkg_opk_dirent *dirent, char **cur,
-		size_t *buf_len)
-{
-	size_t  len;
-	char   *buf;
-
-	len = strlen(dirent->name);
-	if (dirent->parent != NULL) {
-		++len;
-	}
-	*buf_len += len;
-
-	if (dirent->parent == NULL) {
-		buf = malloc(*buf_len);
-		if (buf == NULL) {
-			return NULL;
-		}
-		*cur = buf;
-	} else if ((buf = _opkg_opk_dirent_full_name(dirent->parent, cur,
-					buf_len)) == NULL) {
-		return NULL;
-	}
-
-	if (dirent->parent != NULL) {
-		**cur = '/';
-		*cur += 1;
-		--len;
-	}
-	memcpy(*cur, dirent->name, len);
-	*cur += len;
-
-	return buf;
-}
-
-char *
-opkg_opk_dirent_full_name(struct opkg_opk_dirent *dirent)
-{
-	char   *name;
-	char   *cur     = NULL;
-	size_t  buf_len = 1;     /* 1 for NUL */
-
-	if ((name = _opkg_opk_dirent_full_name(dirent, &cur, &buf_len)) == NULL)
-	{
-		return NULL;
-	}
-	*cur = '\0';
-	return name;
-}
diff --git a/src/dirent.h b/src/dirent.h
index 44d33ea..4cce24f 100644
--- a/src/dirent.h
+++ b/src/dirent.h
@@ -29,7 +29,4 @@ int
 opkg_opk_dirent_name_prefix(struct opkg_opk_dirent *dirent, char *name_buf,
 		size_t name_len, char *pref_buf, size_t pref_len);
 
-char *
-opkg_opk_dirent_full_name(struct opkg_opk_dirent *dirent);
-
 #endif  /* OPKG_OPK_DIRENT_H_ */
--
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