bitbake: fetch2: handle broken symlinks in local mirror handling

If a file:// mirror is being used, the fetcher will create a symlink to the
local file. However, if the local file gets removed, that link will be dead,
and os.path.exists() returns False in that case, so it tries and fails to
recreate the link. Now we unlink such a dead link if it exists.

(Bitbake rev: 229ed3857e826e3e215e843cb51f729c1e13ed37)

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/bitbake/lib/bb/fetch2/__init__.py b/bitbake/lib/bb/fetch2/__init__.py
index a7da899c22..d911307f6e 100644
--- a/bitbake/lib/bb/fetch2/__init__.py
+++ b/bitbake/lib/bb/fetch2/__init__.py
@@ -560,7 +560,11 @@ def try_mirror_url(newuri, origud, ud, ld, check = False):
             return None
         # Otherwise the result is a local file:// and we symlink to it
         if not os.path.exists(origud.localpath):
-             os.symlink(ud.localpath, origud.localpath)
+            if os.path.islink(origud.localpath):
+                # Broken symbolic link
+                os.unlink(origud.localpath)
+
+            os.symlink(ud.localpath, origud.localpath)
         update_stamp(newuri, origud, ld)
         return ud.localpath