fs: Implement links to directories

So far links can only point to files. Implement links to
directories. With this all kinds of links are supported:

- relative links
- absolute links
- links including ".."
- link loops (are detected, return -EMLINK)

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/fs.h b/include/fs.h
index 6a592893a9..71edb22f26 100644
--- a/include/fs.h
+++ b/include/fs.h
@@ -128,7 +128,8 @@ char *mkmodestr(unsigned long mode, char *str);
  * of "..", "." and double slashes. The returned string must be freed wit free().
  */
 char *normalise_path(const char *path);
-char *normalise_link(const char *pathname, const char* symlink);
+
+char *canonicalize_path(const char *pathname);
 
 char *get_mounted_path(const char *path);