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-rw-r--r--exfat/libexfat/node.c21
1 files changed, 19 insertions, 2 deletions
diff --git a/exfat/libexfat/node.c b/exfat/libexfat/node.c
index bacb01d10..ff2cea9ab 100644
--- a/exfat/libexfat/node.c
+++ b/exfat/libexfat/node.c
@@ -2,7 +2,7 @@
node.c (09.10.09)
exFAT file system implementation library.
- Copyright (C) 2010-2012 Andrew Nayenko
+ Copyright (C) 2010-2013 Andrew Nayenko
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -486,7 +486,7 @@ void exfat_reset_cache(struct exfat* ef)
reset_cache(ef, ef->root);
}
-void next_entry(struct exfat* ef, const struct exfat_node* parent,
+static void next_entry(struct exfat* ef, const struct exfat_node* parent,
cluster_t* cluster, off64_t* offset)
{
*offset += sizeof(struct exfat_entry);
@@ -908,6 +908,23 @@ int exfat_rename(struct exfat* ef, const char* old_path, const char* new_path)
exfat_put_node(ef, node);
return rc;
}
+
+ /* check that target is not a subdirectory of the source */
+ if (node->flags & EXFAT_ATTRIB_DIR)
+ {
+ struct exfat_node* p;
+
+ for (p = dir; p; p = p->parent)
+ if (node == p)
+ {
+ if (existing != NULL)
+ exfat_put_node(ef, existing);
+ exfat_put_node(ef, dir);
+ exfat_put_node(ef, node);
+ return -EINVAL;
+ }
+ }
+
if (existing != NULL)
{
/* remove target if it's not the same node as source */