string_utils: move to lxc-copy() sources

src/lxc/string_utils.c

@@ -192,41 +192,6 @@ char *lxc_string_join(const char *sep, const char **parts, bool use_as_prefix)
 	return result;
 }
 
-char **lxc_normalize_path(const char *path)
-{
-	char **components;
-	size_t components_len = 0;
-	size_t pos = 0;
-
-	components = lxc_string_split(path, '/');
-	if (!components)
-		return NULL;
-
-	/* resolve '.' and '..' */
-	for (pos = 0; pos < components_len;) {
-		if (strequal(components[pos], ".") ||
-		    (strequal(components[pos], "..") && pos == 0)) {
-			/* eat this element */
-			free(components[pos]);
-			memmove(&components[pos], &components[pos + 1],
-				sizeof(char *) * (components_len - pos));
-			components_len--;
-		} else if (strequal(components[pos], "..")) {
-			/* eat this and the previous element */
-			free(components[pos - 1]);
-			free(components[pos]);
-			memmove(&components[pos - 1], &components[pos + 1],
-				sizeof(char *) * (components_len - pos));
-			components_len -= 2;
-			pos--;
-		} else {
-			pos++;
-		}
-	}
-
-	return components;
-}
-
 /* taken from systemd */
 char *path_simplify(const char *path)
 {

src/lxc/string_utils.h

@@ -30,21 +30,7 @@ __hidden extern char *lxc_string_replace(const char *needle, const char *replace
 					 const char *haystack);
 __hidden extern bool lxc_string_in_array(const char *needle, const char **haystack);
 __hidden extern char *lxc_string_join(const char *sep, const char **parts, bool use_as_prefix);
-/*
- * Normalize and split path: Leading and trailing / are removed, multiple
- * / are compactified, .. and . are resolved (.. on the top level is considered
- * identical to .).
- * Examples:
- *     /            ->   { NULL }
- *     foo/../bar   ->   { bar, NULL }
- *     ../../       ->   { NULL }
- *     ./bar/baz/.. ->   { bar, NULL }
- *     foo//bar     ->   { foo, bar, NULL }
- */
-__hidden extern char **lxc_normalize_path(const char *path);
 
-/* remove multiple slashes from the path, e.g. ///foo//bar -> /foo/bar */
-__hidden extern char *lxc_deslashify(const char *path);
 __hidden extern char *lxc_append_paths(const char *first, const char *second);
 
 /*

src/lxc/tools/lxc_copy.c

@@ -289,6 +289,41 @@ static int mk_rand_ovl_dirs(struct mnts *mnts, unsigned int num, struct lxc_argu
 	return 0;
 }
 
+static char **lxc_normalize_path(const char *path)
+{
+	char **components;
+	size_t components_len = 0;
+	size_t pos = 0;
+
+	components = lxc_string_split(path, '/');
+	if (!components)
+		return NULL;
+
+	/* resolve '.' and '..' */
+	for (pos = 0; pos < components_len;) {
+		if (strequal(components[pos], ".") ||
+		    (strequal(components[pos], "..") && pos == 0)) {
+			/* eat this element */
+			free(components[pos]);
+			memmove(&components[pos], &components[pos + 1],
+				sizeof(char *) * (components_len - pos));
+			components_len--;
+		} else if (strequal(components[pos], "..")) {
+			/* eat this and the previous element */
+			free(components[pos - 1]);
+			free(components[pos]);
+			memmove(&components[pos - 1], &components[pos + 1],
+				sizeof(char *) * (components_len - pos));
+			components_len -= 2;
+			pos--;
+		} else {
+			pos++;
+		}
+	}
+
+	return components;
+}
+
 static char *construct_path(char *path, bool as_prefix)
 {
 	char **components = NULL;